DOOSAN INFRACORE CO., LTD. Patent applications |
Patent application number | Title | Published |
20160047399 | METHOD, DEVICE, AND SYSTEM FOR CONTROLLING HYDRAULIC PUMP OF CONSTRUCTION MACHINE - The present disclosure relates to a method, a device, and a system for controlling a hydraulic pump of a construction machine, the system comprising: an engine; an engine control unit configured to control the engine by using engine limit torque information and current engine torque information of the engine; a hydraulic pump operated by power supplied from the engine; at least one actuator driven by a hydraulic pressure discharged from the hydraulic pump; and a hydraulic pump control device configured to control a limited swash plate angle of the hydraulic pump by using a torque of the hydraulic pump and the engine limit torque information received from the engine control unit. | 02-18-2016 |
20160002881 | APPARATUS AND METHOD FOR CONTROLLING WORK MACHINE OF WORK VEHICLE - An exemplary embodiment suggested in the present disclosure relates to an apparatus and a method of controlling a work machine of a work vehicle. The apparatus for controlling a work machine of a work vehicle suggested in the present disclosure measures a speed of a work vehicle, converts an input signal of a joystick into an output current for controlling a proportional valve (P/V) for operating a work machine (for example, a boom and a bucket), compares the speed of the work vehicle with a reference speed, and advances or delays an end time point or an operation time point of the work machine, thereby controlling an impact applied to the work vehicle. | 01-07-2016 |
20150377287 | DOUBLE-STRUCTURE BUSH AND BEARING ASSEMBLY COMPRISING SAME - The present disclosure relates to a double-structure bush usable in a joint portion which operates in low-speed and high-load, and a bearing assembly comprising the same. | 12-31-2015 |
20150376864 | DOUBLE-STRUCTURE BUSH AND BEARING ASSEMBLY COMPRISING SAME - The present disclosure relates to a double-structure bush usable in a joint portion which operates in low speed and high load, and to a bearing assembly comprising same. | 12-31-2015 |
20150345113 | AUTOMATIC TRANSMISSION CONTROL UNIT FOR CONSTRUCTION EQUIPMENT AND CONTROL METHOD THEREFOR - The present disclosure relates to an automatic transmission control unit for construction machinery and a control method therefor, and when a load pressure detecting unit detecting a load pressure of hydraulic pressure supplied from a main hydraulic pump to an actuator, such as a cylinder and a hydraulic motor, is in an abnormal state, the automatic transmission control unit receives an electronic control pressure signal having little concerns of a breakdown or a malfunction, and automatically changes a travel speed of construction machinery based on the received electronic control pressure signal. | 12-03-2015 |
20150343976 | SENSING DEVICE AND METHOD OF CONSTRUCTION EQUIPMENT - The present invention relates to a device and a method for sensing (detecting) rear and side areas of construction equipment. The present invention comprises: setting a certain distance from the construction machine (or vehicles) as a safe-distance area (work pattern area); patterning fixed objects within the set safe-distance area; sounding an alarm and/or displaying a captured (or detected) image on a display when other objects excluding the fixed objects that are sensed by the construction machine (that is, the fixed objects that are patterned) are sensed. | 12-03-2015 |
20150308327 | COMBUSTION CHAMBER OF DIRECT INJECTION DIESEL ENGINE HAVING INDUCERS - The present disclosure relates to a combustion chamber of a diesel engine, which has a recessed combustion bowl to mix fuel injected from an injector with air, the combustion chamber including: a cylinder head which has the injector mounted thereto and is positioned at an upper side of the combustion bowl; a cylinder block which is positioned at a lower side of the cylinder head; and a piston which moves upward and downward in the cylinder block and faces the cylinder head, in which a plurality of radial inducers is provided on a bottom surface of the cylinder head around the injector. | 10-29-2015 |
20150267381 | BOOM DRIVING SYSTEM FOR HYBRID EXCAVATOR AND CONTROL METHOD THEREFOR - The present disclosure relates to a boom driving system for a hybrid excavator and a control method therefor, and more particularly, to a boom driving system for a hybrid excavator, which drives a hydraulic pump motor so as to move a boom upward and downward, and collects regenerative power of the boom using an electric motor so as to improve fuel efficiency, and a control method for the boom driving system. Provided in exemplary embodiments of the present disclosure is a boom driving system for a hybrid excavator and a control method therefor, which may allow an electric motor generator to normally produce electricity by allowing retraction speed and force of the boom actuator to be controlled to a target speed when a boom is moved downward. | 09-24-2015 |
20150184619 | SYSTEM FOR RECIRCULATING ENGINE EXHAUST GAS - The present disclosure relates to a system for recirculating engine exhaust gas, and more particularly, to a system for recirculating engine exhaust gas, which mixes a part of exhaust gas discharged from an engine with air for combustion, and recirculates the mixture, thereby inhibiting nitrogen oxide (NOx) from being generated. Therefore, a technical problem to be achieved in the present disclosure is to provide a system for recirculating engine exhaust gas which may have a simplified structure. In addition, another object of the present disclosure is to provide a system for recirculating engine exhaust gas, which improves output of an engine by increasing an amount of intake air, and further improves fuel efficiency. | 07-02-2015 |
20140373255 | Support Device - A support device for transferring at least part of the weight of an earring from an earlobe to a part of the ear that comprises cartilage, the device comprising a first portion (P | 12-25-2014 |
20140286819 | HIGH STRENGTH FLAKE GRAPHITE CAST IRON HAVING EXCELLENT WORKABILITY AND PREPARATION METHOD THEREOF - The present disclosure relates to flake graphite cast iron having high workability and a preparation method thereof, and more particularly, to flake graphite cast iron with a uniform graphite shape, low chill formability, a high strength such as a tensile strength of 350 MPa or more, and excellent workability and fluidity by controlling each of the contents of manganese (Mn) and sulfur (S) and carbon (C) and silicon (Si) included in the cast iron and a carbon equivalent (CE) to predetermined ratios, and a preparation method thereof. | 09-25-2014 |
20140284999 | HYBRID POWER SUPPLY APPARATUS AND METHOD FOR CONTROLLING SAME - Disclosed is a hybrid power supply apparatus for supplying power to industrial equipment, such as an excavator. The hybrid power supply apparatus according to an aspect of the present disclosure includes: a power supply unit configured to supply power to an operating load of hybrid equipment; a hybrid controller configured to control a movement of the operating load; a control power supply unit configured to supply power to the hybrid controller; an auxiliary power supply unit configured to convert a voltage of the power supply unit and supply power to the hybrid controller instead of the control power supply unit, or charge the control power supply unit; and a first switch unit configured to connect any one of the control power supply unit and the auxiliary power supply unit to the hybrid controller. | 09-25-2014 |
20140144168 | STRUCTURE FOR REDUCING THERMAL DISPLACEMENT OF MACHINE TOOL STRUCTURE - The present disclosure relates to a structure for reducing thermal displacement of a machine tool structure, and more particularly, to a structure for reducing thermal displacement of a machine tool structure capable of reducing thermal displacement of a structure in order to prevent processing precision from deteriorating due to deformation of a fixed structure by heat generated at a part where the fixed structure and a movable structure perform frictional motion together with each other. Accordingly, in order to resolve a technical problem, an object of the present invention is to provide a structure for reducing thermal displacement of a machine tool structure capable of preventing a structure from being deformed and distorted by reducing a temperature deviation over the entire structure by rapidly transferring heat to other parts when a temperature of a specific part of the structure is raised. | 05-29-2014 |
20140118533 | OPERATIONAL STABILITY ENHANCING DEVICE FOR CONSTRUCTION MACHINERY - According to the present invention, an operational stability enhancing device for construction machinery is provided. The operational stability enhancing device for construction machinery includes: a plurality of cameras configured to capture surrounding images of construction machinery; a plurality of sensors configured to detect an obstacle located in the surrounding area of the construction machinery; a monitor configured to display the surrounding images captured by the plurality of cameras; and a control unit configured to, in a case where a detected object is detected in a surrounding area of a moving path by the sensor, and the detected object is an avoidance processing target, display an image of the captured detected object on a monitor through screen conversion or change the image of the captured detected object so as to be easily recognized by an operator when the construction machines approaches the detected object. | 05-01-2014 |
20140076275 | COMBUSTION CHAMBER OF DIRECT INJECTION DIESEL ENGINE FOR REDUCING THE NOx - Disclosed is a combustion chamber of a diesel engine provided with a bowl having a concave shape so that fuel injected from an injector creates a swirl or squishing flow to be mixed with air, and the combustion chamber of the diesel engine includes: a pip protruding from a center of a lower surface of the bowl toward the injector; a lip part protruding from a side surface of the bowl toward the injector; and a main combustion chamber provided on a lower portion of the lip part and a sub combustion chamber provided on an upper portion of the lip part, with the lip part interposed therebetween, in which a surface of the sub combustion chamber is formed in a flat shape or a concave bowl shape to have a depth of the sub combustion chamber of 0.8 mm or lower. | 03-20-2014 |
20140076273 | Combustion Bowl Shape Of Direct Injection Diesel Engine For Reducing The Soot Emission - The present disclosure relates to a combustion bowl shape of a direct injection diesel engine for reducing soot. The combustion bowl shape of the direct injection diesel engine for reducing soot according to the present disclosure includes: a lip part protruding from an internal circumferential surface; a main combustion bowl formed at a lower side based on the lip part; and a sub combustion bowl formed at an upper side based on the lip part, in which a diameter ratio of a combustion bowl entrance diameter of the sub combustion bowl to a main combustion bowl maximum diameter of the main combustion bowl is 1.10 to 1.40. | 03-20-2014 |
20140041372 | EXHAUST MANIFOLD FOR PREVENTING CONDENSATE AND GAS LEAKAGE IN ENGINE - The present invention relates to an exhaust manifold for preventing condensate and gas leakage in an engine, and more particularly, to an exhaust manifold for preventing condensate and gas leakage in an engine, capable of preventing peripheries of the engine from being contaminated by condensate and/or exhaust gas leaking from interiors of a plurality of exhaust manifolds to the outside through connection portions of the exhaust manifolds. | 02-13-2014 |
20140039666 | APPARATUS AND METHOD FOR AUTOMATICALLY DETECTING AND COMPENSATING FOR A BACKLASH OF A MACHINE TOOL - According to an embodiment of the present invention, a torque variation of a servomotor, which is measured in a numerical control apparatus of an existing numerical control machine tool, is observed, and a backlash is detected by calculating a transfer distance of an output shaft of the servomotor at a torque peak, without adding additional positioning detection equipment, thereby detecting an accurate backlash amount without adding additional equipment. | 02-06-2014 |
20130333355 | SYSTEM AND METHOD FOR ACTIVE REVENERATION OF A DPF OF A CONSTRUCTION MACHINE HAVING AN ELECTRO-HYDRAULIC PUMP - An exemplary embodiment of the present disclosure relates to a system for active regeneration of a DPF of a diesel engine, and more particularly, to a system and a method for active regeneration of a DPF including an electro-hydraulic pump, in which a non-work load is arbitrarily provided to the diesel engine to quickly perform active regeneration of the DPF even in a state in which substantial work of the construction machine having an electro-hydraulic pump is stopped, and to this end, provides a system and a method for active regeneration of a DPF of a construction machine in that, when performing the active regeneration of the DPF, a center bypass cut valve is driven to convert a hydraulic system of the construction machine to an open state, a predetermined flow rate of working fluid is discharged from the electro-hydraulic pump using an adjustor such as an electromagnetic proportional control valve (EPPR), and the working fluid is collected in to a tank through an opened center bypass line, thus allowing the working fluid to flow without driving a working machine to produce a so-called non-work load, and the engine is overheated by the load, and the temperature of the exhaust gas is raised to a predetermined temperature so as to satisfy a temperature condition required for the active regeneration of the DPF. | 12-19-2013 |
20130318952 | METHOD FOR CONTROLLING A HYDRAULIC PUMP OF A WHEEL LOADER - The present disclosure relates to a method for controlling a hydraulic pump of a wheel loader, which drives a working machine as necessary, thereby improving the acceleration performance of and more particularly, to a method for controlling a hydraulic pump in order to improve acceleration performance of the wheel loader in a situation in which an injection amount of fuel is limited during an acceleration process of the wheel loader in accordance with stricter regulations on exhaust gas. | 12-05-2013 |
20130312403 | HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE HAVING ELECTRONIC HYDRAULIC PUMP - The present disclosure relates to a hydraulic system for a construction machine having an electronic hydraulic pump, and more particularly, to a hydraulic system which temporarily drives the construction machine when an operation of an electronic control unit controlling an electronic hydraulic pump is abnormal, particularly, when the electronic control unit is not able to perform a control because an operative amount of a joystick input to the electronic control unit is not normally transmitted to the electronic control unit. | 11-28-2013 |
20130311950 | APPARATUS AND METHOD FOR INPUTTING CUTTING SHAPE USING INTERACTIVE PROGRAM IN COMPUTER NUMERICAL CONTROL MACHINE TOOL - The present disclosure relates to an apparatus and a method for inputting a processing shape using an interactive program in a computer numerical control machine tool, including: an input unit having a key for inputting a parameter of an inputted shape; a display unit which registers a shape processed by a user as a user registration shape and provides a user interface environment capable of editing the registered user registration shape; a memory unit which stores a plurality of user registration shapes; an interactive program control unit which displays the plurality of user registration shapes stored in the memory unit through the display unit when the user requests the user registration shape, and outputs shape information after the user selects a representative shape from the plurality of user registration shapes and inputs a parameter of the representative shape; and a programmable machine controller (PMC) unit which drives the machine tool on the basis of the shape information outputted from the interactive program control unit. | 11-21-2013 |
20130304332 | TURNING CONTROL APPARATUS FOR A HYBRID CONSTRUCTION MACHINE - A turning control apparatus for a hybrid construction machine may include an engine, an oil hydraulic pump, an electric energy storage device, an engine assistant motor, a turning motor, a power converter, a battery, an HCU, an SMPS configured to apply electric power to the HCU by being supplied with electric power from the battery, a Key | 11-14-2013 |
20130298553 | EXHAUST GAS RECIRCULATION APPARATUS FOR HEAVY CONSTRUCTION EQUIPMENT - An exhaust gas recirculation apparatus for heavy construction equipment of the present disclosure, includes: a hybrid EGR line which introduces a part of exhaust gas from an exhaust manifold into a compressor so as not to pass through a turbine; and a hybrid EGR valve which is provided in the hybrid EGR line, and controlled to be opened and closed so that a part of the exhaust gas discharged from the exhaust manifold is introduced into an inlet of the compressor. | 11-14-2013 |
20130298525 | METHOD FOR CONTROLLING AN EXHAUST GAS RECIRCULATION APPARATUS FOR HEAVY CONSTRUCTION EQUIPMENT - A method for controlling an exhaust gas recirculation apparatus for heavy construction equipment of the present invention, which includes: an engine; a turbocharger which rotates a turbine by using exhaust gas discharged from the engine, and compresses air, which is supplied to the engine, by a compressor connected to the turbine through a connecting shaft; an intercooler which cools compressed air flowing into the engine; a high-pressure EGR line which is provided with a high-pressure EGR cooler and a high-pressure EGR valve, and does not pass through the turbocharger; a hybrid EGR line which is provided with a hybrid EGR valve and a hybrid EGR cooler, and does not pass through the turbine of the turbocharger but passes only through the compressor; and a low-pressure EGR line which is provided with a low-pressure EGR valve and a low-pressure EGR cooler, and passes through the turbocharger, includes a mechanical control step in which an engine control unit (ECU), which receives a low-load request signal from a driver, or driving and idle signals, opens the hybrid EGR valve | 11-14-2013 |
20130291531 | HYBRID EXCAVATOR BOOM ACTUATING SYSTEM AND METHOD FOR CONTROLLING SAME - The present disclosure relates to a hybrid excavator boom actuating system and to a method for controlling the same. The boom actuating system comprises: an electric motor serving as a motor or a generator; an ultra capacitor for storing electricity generated by the electric motor; a hydraulic pump motor driven by the electric motor to supply hydraulic fluid to a boom; a boom control valve which has a closed circuit for selectively connecting or disconnecting an outlet line and an inlet line of the hydraulic pump motor to or from a head or a rod side of the boom; a main pump driven by the engine to supply hydraulic fluid to a bucket, a travel motor or an arm; a motor bypass valve connected to the outlet line and the inlet line to interconnect the outlet line and the inlet line or disconnect the outlet line from the inlet line; and a controller for controlling the electric motor, the hydraulic pump motor, the boom control valve and the motor bypass valve. | 11-07-2013 |
20130289834 | LOW IDLE CONTROL SYSTEM OF CONSTRUCTION EQUIPMENT AND AUTOMATIC CONTROL METHOD THEREOF - The present disclosure discloses a low idle control system of construction equipment and an automatic control method thereof. The low idle control system of construction equipment includes: a front angle change sensing means which detects an operation of at least a part of a front unit through changes in an angle; a controller which is electrically connected to the front angle change sensing means, determines whether to enter an auto idle state by receiving an output signal that is transmitted from the front angle change sensing means, and generates an rpm control signal corresponding to the result of the determination on whether to enter the auto idle state; and an ECU which controls the rpm of an engine by receiving the rpm control signal outputted from the controller. The present disclosure is capable of implementing an effective auto idle function by more accurately recognizing a state of using equipment. | 10-31-2013 |
20130283775 | OIL PRESSURE SYSTEM FOR WHEEL LOADER - The present disclosure provides an oil pressure system for a wheel loader with an improved raising process of a boom, thereby, especially, decreasing impact generated when the boom approaches a maximum height during loading work. | 10-31-2013 |
20130282242 | METHOD FOR CONTROLLING AUTO IDLE STATE OF HEAVY CONSTRUCTION EQUIPMENT - A method for controlling an auto idle state of heavy construction equipment of an exemplary embodiment of the present disclosure includes: storing, by a vehicle controller (VCU) that receives engine actuation information from an engine controller (ECU), an average traveling value of a worker-set engine RPM for a first set time when the heavy construction equipment is actuated at the worker-set engine RPM; and actuating, by the engine controller (ECU) that receives information on the average traveling value of the worker-set engine RPM for the first set time from the vehicle controller (VCU), an engine at a variable auto idle engine RPM, which varies depending on the average traveling value of the worker-set engine RPM for the first set time, when work is temporarily stopped and the worker-set engine RPM is switched to an auto idle engine RPM. | 10-24-2013 |
20130282187 | METHOD FOR CONTROLLING HYDRAULIC PUMP IN EXCAVATOR - The present disclosure relates to a method for controlling a hydraulic pump in an excavator, and more particularly, to a method for controlling a hydraulic pump in an excavator, capable of enabling optimum control of an engine and a pump, in a case of operating an excavator with options such as a breaker, a crusher, or the like, by allowing the engine to be operated at an engine revolution speed to achieve the best fuel efficiency when a hydraulic pump discharges a flow at a set flow rate predetermined by an operator through an instrument panel. | 10-24-2013 |
20130278772 | RUNNING INFORMATION RECORDING DEVICE FOR HEAVY CONSTRUCTION EQUIPMENT - A running information recording device for heavy construction equipment of the present disclosure includes a plurality of cameras installed on the side surfaces of a unit of heavy construction equipment to gather image data about the area around the unit of heavy construction equipment; an image processor generating the image data about the area around the unit of heavy construction equipment; and a memory storing the image data, and the image data includes a synthetic moving image in which an image of the unit of heavy construction equipment is positioned in the middle, and the image data acquired from the plurality of cameras is synthesized into a single image to be displayed such that the area around the unit of heavy construction equipment is shown in bird's eye view. | 10-24-2013 |
20130269320 | ACTIVE DIESEL PARTICULATE FILTER REGENERATION SYSTEM USING NON-WORK LOAD AND METHOD THEREOF - The present disclosure relates to an active diesel particulate filter (DPF) regeneration system of an engine, and more particularly, to an active DPF regeneration system and method, in which a non-work load is arbitrarily provided to the engine to quickly perform an active DPF regeneration even in a state where substantial work of a construction machine is stopped. | 10-17-2013 |
20130268217 | METHOD AND APPARATUS FOR DETECTING ABNORMALITY OF A CAPACITOR - The present disclosure provides a capacitor abnormality detection method and detection apparatus for accurately detecting an abnormality of an individual capacitor in a circuit in which two or more capacitors are connected in series at a low cost, and the capacitor abnormality detection apparatus includes: a measuring unit configured to measure capacitance of the circuit from both ends of the circuit; a storage unit configured to store the measured capacitance of the circuit and hours of use of the circuit during the measurement; and a determining unit configured to determine whether an abnormality is generated in at least one capacitor configuring the circuit by comparing the measured capacitance of the circuit and predetermined expected capacitance. | 10-10-2013 |
20130268167 | APPARATUS AND METHOD FOR CONTROLLING TRANSMISSION CUT-OFF OF HEAVY CONSTRUCTION EQUIPMENT - An apparatus for controlling transmission cut-off of heavy construction equipment according to the present disclosure includes: a displacement sensor which detects a boom height; a vehicle control unit (VCU) to which a detected signal of the displacement sensor is input; a transmission control unit (TCU) which is connected with the vehicle control unit and controls a transmission clutch cut-off function; a driving control proportion valve block (transmission valve assembly) which is connected with the transmission control unit and performs a driving control; and a brake press sensor which is connected with the transmission control unit and detects a brake pedal pressure. | 10-10-2013 |
20130262611 | METHOD FOR TRANSMITTING INFORMATION OF HEAVY EQUIPMENT VEHICLE FOR CONSTRUCTION - An aspect of the present disclosure provides a method of transmitting information of a heavy equipment vehicle for construction, in which a plurality of slave vehicles having slave communication equipment mounted thereon, master communication equipment capable of communicating with the slave communication equipment of each slave vehicle or a master vehicle having the master communication equipment mounted thereon, and a server capable of communicating with the master communication equipment are provided, and information of each slave vehicle is transmitted to the server through each piece of the slave communication equipment and the master communication equipment, and control information of the server is transmitted to each slave vehicle through the master communication equipment and each piece of slave communication equipment. | 10-03-2013 |
20130261908 | APPARATUS AND METHOD FOR AUTOMATICALLY CONTROLLING A TRANSMISSION OF A WHEEL LOADER - An aspect of the present disclosure has been made in an effort to provide an apparatus and a method of automatically controlling a transmission, capable of increasing work efficiency by removing a time gap between a starting time point when an operation such as excavation of a wheel loader starts and a transmission time point when the kickdown is performed. In addition, an aspect of the present disclosure has been made in an effort to provide an apparatus and a method of automatically controlling a transmission, capable of performing an automatic kickdown transmission at the same time of the starting time point of operation, preferably before the operation is performed. | 10-03-2013 |
20130260973 | TOOL CARRIER UNIT OF A TOOL MAGAZINE - The present disclosure relates to a tool carrier unit of a tool magazine. The tool carrier unit of a tool magazine according to the present invention includes: a body frame installed across a first tool magazine and a second tool magazine; a clamping unit disposed at one side of the body frame and configured to clamp a tool accommodated in any one of the first tool magazine and the second tool magazine; an LM unit (liner motion unit) disposed at one side of the body frame and configured to guide a movement of the clamping unit; an actuator disposed at one side of the body frame and configured to move the clamping unit; and an unclamping unit disposed at the body frame and configured to unclamp the tool when the clamping unit reaches the first tool magazine or the second tool magazine. | 10-03-2013 |
20130257339 | REAL-TIME SERVO MOTOR CONTROLLER BASED ON A LOAD WEIGHT - The present disclosure relates to a real-time servo motor controller based on a load weight capable of not only adaptively controlling the servo motor even when load inertia varies in accordance with a weight of a load (material) but also controlling the servo motor in an optimum state regardless of the load weight by reflecting in real time various mechanical variables generated while transferring the load. | 10-03-2013 |
20130255244 | HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE INCLUDING EMERGENCY CONTROL UNIT FOR ELECTRIC HYDRAULIC PUMP - The present disclosure relates to a hydraulic system for a construction machine which uses an electric hydraulic pump, and more particularly, to a hydraulic system including an emergency control unit for temporarily driving the construction machine when an electronic control unit controlling the electric hydraulic pumps fails to operate. To this end, disclosed is the hydraulic system including the electric hydraulic pump, the electric control unit for controlling the electric hydraulic pump, and the emergency control unit, which operates when the electric control unit fails to operate, so as to temporarily control the electric hydraulic pump in accordance with to a predetermined condition, which can effectively respond to a low load work corresponding to predetermined pressure and to a high load work corresponding to higher pressure, by selectively operating the emergency control unit according to different optional conditions, based on the amount of load (low load, high load) of the working machine that is required when the electric control unit fails to operate. | 10-03-2013 |
20130255241 | METHOD FOR CONTROLLING FLOW RATE OF ATTACHMENT FOR CONSTRUCTION EQUIPMENT - A method of controlling a flow rate of an attachment for construction equipment of the present disclosure, in which an engine and a pump are connected to a control device to which various control information according to equipment characteristics, user setting information from an instrument panel, engine rpm adjustment information through an engine control dial, or the like is inputted, and an attachment is connected to the pump so as to perform specific work, includes selecting, on the instrument panel, an attachment to perform work and an optimum engine rpm according to the attachment; adjusting the flow rate by controlling an angle of a swash plate of the pump; and adjusting additionally a supply flow rate of the attachment by resetting an engine rpm when adjustment to the flow rate is necessary while performing the attachment work. | 10-03-2013 |
20130253694 | TOOL PATH PART PROGRAM MODIFICATION SYSTEM OF NC MACHINE TOOL - A tool path part program modification system of an NC machine tool according to an aspect of the present disclosure, includes: an HMI unit which receives a tool path part program having one or more processing blocks which automate and perform tool paths for processing a work piece by using tools of the NC machine tool; an NC kernel unit which interprets the part program inputted to the HMI unit for each processing block, and generates each processing block information; a tool path modification module unit which sequentially calls the processing block information interpreted by the NC kernel unit, and modifies a consecutive rapid transfer processing block group such that tool paths are reduced and collision between the tool and the work piece does not occur, when the consecutive rapid transfer processing block group is present in which the predetermined reference number or more of processing blocks including rapid transfer commands are consecutively included; and a simulator unit which simulates the part program for each processing block interpreted by the NC kernel unit. | 09-26-2013 |
20130253670 | APPARATUS AND METHOD FOR DETECTING DAMAGE TO TOOL IN MACHINE - The apparatus for detecting damage to the tool in the machine and the method of detecting damage to the tool according to the present disclosure are applied to a machine, such as a CNC, to detect and control damage to a tool and possibility of damage in advance, thereby efficiently managing processing work by the machine while achieving safety of the machine. | 09-26-2013 |
20130239741 | Rocker Arm Shaft with Improved Abrasion Resistance and Rocker Arm Shaft/Bush Assembly Comprising Same - The present disclosure relates to a rocker arm shaft and a rocker arm shaft/bush assembly including a rocker arm shaft, and a rocker arm bush which encloses the rocker arm shaft, in which the rocker arm shaft has a surface on which minutely processed concave-convex portions are formed, thereby achieving excellent lubricative characteristics and as a result having excellent abrasion resistance. | 09-19-2013 |
20130236134 | SLIDING BEARING HAVING IMPROVED LUBRICATION CHARACTERISTICS - The present disclosure relates to a sliding bearing which is usefully applicable to equipment to which high surface pressure is applied, by processing an inner surface of a sliding bearing manufactured in the form of a sintered body to be optimized to lubrication characteristics. | 09-12-2013 |
20130220113 | CYLINDER FORMED WITH UNEVEN PATTERN ON SURFACE OF INNER WALL - The present disclosure relates to a cylinder having an inner wall formed with fine uneven patterns to improve durability. The fine uneven patterns according to the present disclosure increases oil film pressure between a piston ring and an inner wall of the cylinder, and smoothly supplies engine oil to where the engine oil is insufficient, thereby reducing abrasion between the piston ring and the inner wall of the cylinder. | 08-29-2013 |
20130218370 | METHOD FOR SAMPLING MONITORING DATA OF CONSTRUCTION EQUIPMENT - A method of sampling monitoring data of construction equipment according to the present disclosure includes: setting a sampling cycle of the monitoring data of the construction equipment when the construction equipment enters into an operation; sampling the monitoring data of the construction equipment according to the sampling cycle when a sampling start is input; and storing the sampled data and transmitting consecutive sampling data to a remote management server when a total sampling time elapses. | 08-22-2013 |
20130217553 | TOOL CARRIER FOR AN AUTOMATIC TOOL CHANGER - The present disclosure relates to a tool carrier for an automatic tool changer. A tool carrier for an automatic tool changer according to the present disclosure includes: a base plate at which a center shaft is installed; a carrier unit installed at the center shaft to turn around the center shaft; a rotating pocket unit installed at the carrier unit to rotate and having a pin installed to protrude outward; a first cam block installed at the base plate and configured to perform a cam action with the pin to allow the pocket unit to rotate when the carrier unit turns from an initial position to the target position; and a second cam block installed at the base plate and configured to perform a cam action with the pin to allow the pocket unit to rotate when the carrier unit turns from the target position to the initial position. | 08-22-2013 |
20130213338 | Adapter Structure for Mounting Boost Pressure Sensor on Electronic Turbo-Charger Engine - An adapter structure for mounting a boost pressure sensor according to the present invention, includes: an intake manifold mounting unit which is provided at an intake manifold and is formed with a penetrating hole at one side portion thereof to communicate with an inside of the intake manifold; a pressure sensor adapter which has a lower portion separably coupled to the intake manifold mounting unit, is made of a heat resistant or heat isolating material, and has a channel which is formed at one side portion thereof, transmits intake air pressure from the penetrating hole of the intake manifold mounting unit to the outside, and has an inner space of which a portion far from the penetrating hole of the intake manifold mounting unit is greater than a portion close to the penetrating hole of the intake manifold mounting unit; a boost pressure sensor which is mounted at an upper portion of the pressure sensor adapter so that a pressure detection portion is tightly coupled to an upper end portion of the channel of the pressure sensor adapter, detects the intake air pressure through the channel of the pressure sensor adapter, and sends a generated intake air pressure signal to an electronic control unit of an engine; and a fixing unit which separably fixes the boost pressure sensor to the intake manifold mounting unit by the media of the pressure sensor adapter. | 08-22-2013 |
20130209317 | AFTER TREATMENT DEVICE OF ENGINE - The present invention discloses an after treatment device of an engine. The after treatment device of the engine includes a urea solution injection section | 08-15-2013 |
20130160619 | RIB STRUCTURE FOR A TURNING CENTER BED - The present disclosure provides a bed for use with a turning center assembled with a main shaft housing in which a work piece is chucked, a turret and a tool table configured to process the work piece by a tool, and a transfer apparatus configured to transfer the turret and the tool table, the bed comprising: a rib including a plurality of rib elements, in which the rib element comprises a first rib element positioned at a lower portion of the bed where the main shaft housing is assembled, and a second rib element positioned at a lower portion of the bed where the transfer apparatus is assembled. | 06-27-2013 |
20130158679 | APPARATUS AND METHOD FOR CONTROLLING CONSTRUCTION MACHINERY - The present disclosure relates to an apparatus and method for controlling construction machinery, and an operation pattern control device according to the present disclosure includes an operation pattern recognition device configured to analyze operation being performed by the construction machinery and a driving control device configured to control individual equipment of the construction machinery to match the operation pattern analyzed by the operation pattern recognition device, and the operation pattern recognition device includes: a data accumulation unit configured to receive and accumulate a manipulation signal of an operator; an operation pattern analysis unit configured to determine a present operation pattern by analyzing data of the accumulated manipulation signal; a probability model analysis unit configured to determine data, which is not determined from the operation pattern analysis unit, by using a probability model; and a pattern result output unit configured to output operation determined from the operation pattern analysis unit and the probability model analysis unit to the driving control device. | 06-20-2013 |
20130146386 | EMERGENCY STEERING SYSTEM OF CONSTRUCTION EQUIPMENT - The present disclosure relates to construction machinery such as an excavator or a wheel loader, and more particularly, to an emergency steering apparatus for construction machinery, capable of controlling a steering operation at the time of emergency in which a part of equipment malfunctions or is in an inoperable state. More specifically, an emergency steering apparatus for construction machinery according to an exemplary embodiment of the present disclosure includes: a steering actuator; an emergency hydraulic pump connected to the steering actuator through a pair of driving flow paths; an emergency steering unit configured to receive working oil, which is discharged from the emergency hydraulic pump, and operate a steering means; and an emergency steering controller configured to control whether or not the emergency hydraulic pump is operated. | 06-13-2013 |
20130104531 | STATIC MIXER FOR MIXING UREA AQUEOUS SOLUTION AND ENGINE EXHAUST GAS | 05-02-2013 |
20130103247 | Apparatus and Method for Controlling Work Trajectory of Construction Equipment - The present disclosure relates to a apparatus and method for controlling work trajectory of construction equipment, and particularly, to a trajectory controlling device and a method for construction equipment, capable of automatically operating with the most suitable work trajectory at the point when an automated task is selected. The trajectory controlling device and method for construction equipment may control a task starting point and the following of a trajectory in order to compensate for a positioning error when playback is selected to follow a teaching trajectory, and may minimize positioning errors by compensating for changes related to gravity due to changes in the posture of a work device. | 04-25-2013 |
20130046447 | Position Control Apparatus and Method for Working Machine of Construction Machinery - Disclosed is a position control apparatus for a working machine of a construction machinery, including: a boom driving unit for driving a boom; a bucket driving unit for driving a bucket; a working tool manipulating part for generating a manipulation signal for driving the boom driving unit and the bucket driving unit; a kick-down switch for generating a kick-down signal for lowering a gear stage; and a controller for, if the kick-down signal is generated by the kick-down switch and the manipulation signal is generated by the working tool manipulating part, outputting a control signal to the boom driving unit and the bucket driving unit to move the boom and the bucket to a preset position. | 02-21-2013 |
20130014720 | ENGINE VALVE DEVICEAANM Kim; Yong LaeAACI IncheonAACO KRAAGP Kim; Yong Lae Incheon KR - The present disclosure relates to an engine valve device including: engine valves; valve guides configured to guide a reciprocating motion of the engine valves; and stem seals fitting on one end of each of the valve guides and circumferentially covering the engine valves, in which the engine valves have micro-machined oil ports on the surfaces surrounded by the valve guides or the stem seals. | 01-17-2013 |
20130008155 | SWING BRAKE CONTROL APPARATUS FOR CONSTRUCTION MACHINERY - The present disclosure relates to an apparatus for controlling a swing brake for construction machinery, comprising: a lower travel body; an upper swinging body supported at the lower travel body such that the upper swing body is capable of being swung; a swing motor for driving the upper swing body; a swing brake for braking the swing motor; a swing brake valve which operates to control the braking and releasing operations of the swing brake; a solenoid valve mounted on the swing brake valve to control the operation of the swing brake valve; an operation sensor which applies a first reference signal and a second reference signal in accordance with the motion of a swing operation control unit for controlling the operation of the upper swinging body, wherein said second reference signal is generated when an amount of displacement of the swing operation control unit is larger than the first reference signal; and a control unit, which operates the swing brake valve to release the swing brake when the first reference signal is inputted from the operation sensor, and which operates the swing motor when the second reference signal is inputted. | 01-10-2013 |
20130001449 | ELECTRONIC HYDRAULIC PRESSURE CONTROL APPARATUS AND METHOD USING VARIABLE BEHAVIOR - The present disclosure relates to an electronic hydraulic pressure control apparatus and an electronic hydraulic pressure control method using a variable behavior, and more particularly, to an electronic hydraulic pressure control apparatus and an electronic hydraulic pressure control method using a variable behavior which can detect that a user manipulates an electronic joystick of an electronic hydraulic system to positive and negative positions with respect to a neutral point in a preset time period, and vary a behavior (for example, a general behavior or an abrupt operation behavior) according to the detection result, thereby enhancing both comfortableness of an operator and an abrupt operation efficiency in manipulating a construction machine and providing a convenience for an operator. | 01-03-2013 |
20130000478 | HYDRAULIC PRESSURE CONTROL APPARATUS FOR CONSTRUCTION MACHINE - According to the present disclosure, a hydraulic control apparatus for construction machinery comprises: hydraulic pumps; first and second control valve units which control the flow directions of working oil discharged from the hydraulic pumps to supply the working oil to first and second work machines, respectively, and which control the degree of opening of flow channels which interconnect the first and second work machines and the hydraulic pumps, respectively; and a control unit which controls the first and second control valve units in accordance with operating signals inputted from first and second operating units. The control unit determines whether the current work mode is a general work mode or a preferential work mode, and if the mode is determined to be a general work mode, calculates a first degree of opening of a normal channel in accordance with the operating signal inputted from the first operating unit and outputs the calculated first degree of opening of a normal channel to the first control valve unit, and if the mode is determined to be a preferential work mode, calculates a second degree of opening of a normal channel in accordance with the operating signal input from the second operating unit, outputs the calculated second degree of opening of a normal channel to the second control valve unit, and outputs a control signal to the second control valve unit such that the degree of opening of the second control valve unit is smaller than the first degree of opening of a normal channel, so as to preferentially ensure the flow of the working oil being supplied to the first work machine. | 01-03-2013 |
20120328224 | SLIDING BEARING AND SLIDING BEARING ASSEMBLY - The present invention relates to a sliding bearing, and more particularly, a sliding bearing having an improved lubricant property by having a lubricant storage on the inner circumferential surface and the outer circumferential surface. The sliding bearing according to the present invention is advantageous to be used particularly under the conditions of the surface pressure of 100 to 1000 kg/cm | 12-27-2012 |
20120326638 | METHOD FOR CONTROLLING AN INVERTER FOR DRIVING A SWING MOTOR - The present disclosure relates to a method of controlling an inverter for driving a swing motor, and particularly, maximally generates braking torque of the swing motor upon generation of failure of the inverter by switching on/off a lower-phase switch or an upper-phase switch of the inverter in order to prevent an upper swing body from freely rotating which is generated when a semiconductor switch of the inverter is switched off upon the generation of over-current and over-voltage of the inverter that drives the swing motor, thereby being capable of protecting the inverter, rapidly stopping the upper swing body, and preventing the risk of accidents. | 12-27-2012 |
20120324877 | SYSTEM FOR DRIVING A BOOM OF A HYBRID EXCAVATOR AND A CONTROL METHOD THEREOF - Disclosed are a system for driving a boom of a hybrid excavator, and a method for controlling same. The disclosed system comprises: an electric motor operating by means of a motor or generator; a capacitor for storing electricity generated by the electric motor; a hydraulic pump motor driven by the electric motor to supply working oil to a boom; a boom control valve having a closed circuit for selectively connecting/disconnecting a discharge line and an inlet line of the hydraulic pump motor to/from a head or a load of the boom; a main pump driven by a driving source arranged separately from the motor so as to supply working oil to a bucket, driving motor, or arm; a boom-assisting valve, which connects a discharge line of the main pump to the discharge line of the hydraulic pump motor, such that working oil discharged from the main pump and the hydraulic pump motor can be combined; and a control unit for controlling the electric motor, the hydraulic pump motor, and the boom control valve. The system of the present disclosure minimizes the loss of energy during excavation, which is the main use of an excavator, while using the electric motor, ensures the operating performance of the boom, and recovers regenerative energy from the boom. | 12-27-2012 |
20120312265 | CAM FOLLOWER WITH IMPROVED STRUCTURE TO INCREASE LIMIT LOAD - Disclosed is a cam follower of which the structure is improved such that the limit load can be increased. The cam follower is one which moves relative to a cam, mediated by a liquid lubricant, wherein a plurality of recesses are provided on the contact surface of the cam follower which makes contact with the cam, and the depth of the plurality of recesses of the contact surface is between 0.005 and 0.03 mm. By providing the plurality of recesses on the contact surface of the cam follower which makes contact with the cam, the present invention makes it possible to improve the state of lubrication between the cam follower and the cam which move relative to each other mediated by the liquid lubricant and to reduce the heat and the wear which occur at the interface between the same. | 12-13-2012 |
20120301346 | CGI CAST IRON AND PRODUCTION METHOD FOR THE SAME - The present invention relates to cast iron, and more particularly, to a compacted graphite iron (CGI) cast iron having an improved casting property, stable tensile strength and yield strength, and hardness in an appropriate range, by being produced with the amounts of carbon (C), silicon (Si), manganese (Mn), copper (Cu), tin (Sn), and magnesium (Mg) controlled, and a production method thereof. | 11-29-2012 |
20120279211 | PUMP CONTROL OPERATING SYSTEM OF CONSTRUCTION MACHINE - The present disclosure is a construction machine, such as an excavator, which comprises a plurality of hydraulically driven actuators, in which some of the actuators are provided in a one-to-one pump system where hydraulic pumps are connected to the respective actuators such that a working fluid is supplied from the respective pumps, and the remaining actuators are provided in an auxiliary control valve system where the working fluid is distributed by an auxiliary control valve connected to one or more pumps. When an amount of the working fluid of an actuator associated with the auxiliary control valve is insufficient, the actuator associated with the auxiliary control valve is connected to a pump of the one-to-one pump system to share the pump of the one-to-one pump system. | 11-08-2012 |
20120267902 | POWER CONVERTING DEVICE FOR HYBRID - The present disclosure prevents an inrush current generated when one side is completely discharged, or charged voltages are different from one another because a DC link capacitor and an ultra-capacitor are directly connected to each other, by driving a load motor after completing initial charging by making each voltage the same through the performing of switching between a DC link capacitor and an ultra-capacitor during initial ignition, so as to safely perform initializing regardless of the charged-discharged state of an electricity storage device during initial ignition. | 10-25-2012 |
20120263604 | HYDRAULIC PUMP CONTROL APPARATUS AND METHOD OF CONSTRUCTION MACHINE - Disclosed are a hydraulic pump control apparatus and a hydraulic pump control method of a construction machine. The hydraulic pump control apparatus includes a pump control unit for controlling a discharge pressure of a hydraulic pump driven by an engine. The pump control unit includes: a pressure setting value calculating unit configured to calculate a pressure setting value based on an engine output torque estimating value or an engine RPM; and a breakdown treating unit configured to select one of the pressure setting value and a pressure command value according to a breakdown of the swash plate angle sensor to output the selected value. Since the pump is controlled according to a pressure setting value obtained by calculating the pressure setting value based on the engine output torque estimating value, the absorption torque value of the pump does not exceed the maximum torque value of the engine even when the swash plate angle sensor breaks down. Accordingly, a phenomenon of stopping the engine can be prevented even if the swash plate angle sensor breaks down during a high-load operation of the engine. | 10-18-2012 |
20120261010 | Hydraulic System for Construction Machinery - The present disclosure relates to a hydraulic system for construction machinery, which is applied to construction machinery provided with a steering unit for controlling steering of equipment, and a main control valve for controlling operating of a work tool, and includes: a main pump for discharging working fluid supplied to the steering unit and the main control valve; a load sensing pressure sensor for sensing a load sensing pressure of the steering unit; a priority valve installed in a supply passage for the working fluid discharged from the main pump, for dividing and supplying the working fluid discharged from the main pump to the steering unit and the main control valve, to correspond to the load sensing pressure; an auxiliary pump for supplementing working fluid to the supply passage supplying the working fluid divided by the priority valve to the steering unit; an electric motor for operating the auxiliary pump; and a controller for operating the electric motor when the load sensing pressure is greater than a reference load sensing pressure, and additionally supplying working fluid discharged from the auxiliary pump the steering unit. | 10-18-2012 |
20120255833 | PALLET TRANSFERRING APPARATUS OF HORIZONTAL TYPE MACHINE TOOL - A pallet transferring apparatus of a horizontal type machine tool according to the present invention includes: a carrier transferring a pallet and having cam guide surfaces on both sides; a servo motor; a decelerator decelerating rotational force received from the servo motor and increasing torque; a pinion converting the rotational force into linear reciprocation movement of the carrier when the pinion is installed on the side of the carrier and receives the rotational force; a rack engaging with the pinion and transferring the rotational force received from the decelerator to the pinion; and a cam follower engaging with the cam guide surface of the carrier to guide forward and backward reciprocation transferring of the carrier. | 10-11-2012 |
20120251332 | POWER CONTROL APPARATUS AND POWER CONTROL METHOD OF CONSTRUCTION MACHINE - The present disclosure provides a power control apparatus of a construction machine, including: an engine connected to a hydraulic pump to drive the hydraulic pump; and a controller for calculating an engine load ratio defined as a ratio of a load torque of the engine for an engine maximum torque calculated from an input engine target RPM, and calculating an engine RPM command value according to the engine load ratio such that the engine is driven at the target RPM to output the calculated engine load ratio and engine RPM command value to the engine. | 10-04-2012 |
20120239263 | FULL CROWD DETENT APPARATUS OF WHEEL LOADER BUCKET - Provided is a full crowd detent apparatus of a wheel loader bucket, and more particularly, a full crowd detent apparatus of a wheel loader bucket that can improve operator's joystick operation convenience by providing a full crowd detent function to full-crowd a bucket without operator's gripping a bucket operating joystick lever from a maximum dump position of the bucket up to a completion moment of a maximum full-crowd operation by controlling a power of an electromagnet by comparing an angle sensor value of a bucket detected from a rotary angle sensor that senses an angle at which a rotational shaft of the bucket rotates with an angle value of a predetermined bucket position (for example, full crowd and return to dig). | 09-20-2012 |
20120227391 | DEVICE AND METHOD FOR CONTROLLING HYDRAULIC PUMP OF CONSTRUCTION MACHINERY - The present invention relates to a device for controlling a hydraulic pump of construction machinery. The device has a first pump supplying working fluid through a swing control valve to a swing motor, and a second pump supplying working fluid through a work tool control valve to a work tool actuator, and includes: a first tilting angle control unit for controlling a discharge flow of the first pump by controlling a tilting angle of the first pump according to an input pump control signal; and a controller deducting a discharge pressure (P | 09-13-2012 |
20120221178 | SYSTEM AND METHOD FOR TRACKING LOCATION OF CONSTRUCTION EQUIPMENT - The present disclosure relates to a method capable of reducing a communication cost for tracking a location of construction equipment by controlling a transmission cycle of locational information of the construction equipment. | 08-30-2012 |
20120203373 | TOOL PATH FORMING METHOD IN MILLING PROCESSING SYSTEM - The present invention provides a tool path forming method in a milling processing system, the method including: (A) a shape offset step; (B) a virtual wall forming step; (C) an interference region forming and shape revising step; (D) a closed shape forming step; (E) a cutting surface forming step; (F) tool path forming steps; (G) an unprocessed region detecting step; and (H) an uncut region tool path forming step. | 08-09-2012 |
20120158234 | Apparatus and Method for Controlling Automatic Operation of Working Unit of Wheel Loader - The method includes: verifying a working state of the wheel loader through detection of a bucket position and a driving state and examining whether the verified working state is an excavation completed state; examining whether a current position of a driving direction operating lever is a backward-movement position when the verified working state is the excavation completed state as a result of the examination; and automatically moving up a position of a boom up to a predetermined position together with backward driving of the wheel loader depending on whether an automatic operation mode is set when the driving direction operating lever position is the backward-movement position. | 06-21-2012 |
20120090309 | Swing Control Apparatus and Swing Control Method for Construction Machinery - Disclosed is a swing control apparatus of construction machinery, including: a hydraulic pump discharging working oil for driving a swing motor and controlling a discharge flux according to an input pump command value Vpump; a pressure sensor sensing pressure of the working oil discharged from the hydraulic pump; and a control unit calculating the pump command value Vpump based on a swing operation quantity Vsw input from the swing operation unit to output the calculated pump command value to the hydraulic pump, wherein when the input swing operation quantity Vsw is larger than a preset reference swing operation quantity Vswo and the discharge pressure Ppump of the hydraulic pump detected by the pressure sensor is lower than a first reference pressure Pswr | 04-19-2012 |
20120057989 | COOLING DEVICE FOR CONSTRUCTION MACHINERY - A cooling device of a construction machine according to the present invention includes: two or more hydraulic motors that rotate positively and reversibly to correspond to a supplying direction of pressure oil and drives rotatably cooling fans connected thereto, respectively; a switching valve switching rotation directions of the two or more hydraulic motors by switching the supplying direction of the pressure oil supplied to the two or more hydraulic motors from the hydraulic motor; and flow rate makeup valves controlling an additional flow supplied upstream of the two or more hydraulic motors when a pressure drop is generated upstream of the two or more hydraulic motors on the basis of the supplying direction of the pressure oil. | 03-08-2012 |
20110320015 | Construction Equipment Remote Control System and Method for Controlling Data Transmission/Reception While the Construction Equipment is in Engine-Off State - The present disclosure relates to a system and a method of remote management of a construction equipment for controlling transmission and reception of data of the construction equipment in a a key-off state. To this end, a system of remote management of a construction equipment according to the present disclosure includes a server communicatable with a communication terminal through a communication network; and a construction equipment where the communication terminal, a equipment control unit, and a plurality of electronic control devices are installed, wherein the communication terminal, the equipment control unit, and the electronic control devices are supplied standby power from a battery provided in the construction equipment, when the equipment control unit receives a key-off signal, the equipment control unit transfers a sleep mode switching command to the communication terminal and the electronic control devices of which operation modes are switched to a sleep mode, when the communication terminal wakes up from the sleep mode state at the time of receiving an operation request from the server and thereafter, wakes up the equipment control unit and transfers the requested operation of the server, and the equipment control unit performs the operation singly when performing the operation singly and thereafter, switches over to the sleep mode when completing the operation, and when the operation is associated with at least one of the electronic control devices, the equipment control unit performs the operation by waking up the corresponding electronic control device and switches the waked up electronic control device to the sleep mode when completing the operation. | 12-29-2011 |
20110264338 | EMERGENCY ENGINE RPM CONTROL APPARATUS FOR HEAVY CONSTRUCTION EQUIPMENT - The present disclosure relates to an apparatus for contingency controlling an engine rotational speed of a heavy construction equipment, which is capable of contingency controlling the speed of an engine when a controller of the heavy construction equipment such as an excavator does not operate normally. The apparatus for contingency controlling an engine rotational speed including a machine control unit generating a driving signal to control an operation of the engine by transferring a control value received from a control dial to an engine control unit may include: an instrument panel electrically connected with the engine control unit and allowing an operator to select and control a desired engine rotational speed because a control algorithm for the engine rotational speed is made into a database; and a connection switch electrically connecting the instrument panel and the engine control unit when the control dial or the machine control unit does not operate normally. | 10-27-2011 |
20110262287 | HYDRAULIC PUMP CONTROLLER FOR CONSTRUCTION MACHINE - A hydraulic pump controlling apparatus of a construction machine according to the present disclosure includes: a hydraulic pump in which a swash plate angle is controlled to control a discharge flow; an auxiliary pump; a control valve controlling a flowing direction of a fluid discharged from the hydraulic pump and selectively supplying the fluid to an actuator; an orifice and a relief valve connected between a center bypass line of the control valve and a tank T to be parallel to each other; signal pressure selecting units receiving a fluid passing through the center bypass line of the control valve and a fluid discharged from the auxiliary pump, and selecting the pressure of any one of the fluids as a signal pressure; and a regulator receiving the signal pressure selected from the signal pressure selecting units to control the swash plate angle of the hydraulic pump, and the signal pressure selecting unit selects the pressure of the fluid discharged from the auxiliary pump as the signal pressure and transfers the selected pressure to the regulator when the construction machine is in an idle state. | 10-27-2011 |
20110258293 | Method of Setting a Transmission Cycle for Information on Construction Equipment - The present disclosure relates to a method for setting a remote transmission cycle of information of a construction machinery for enabling a user or a provider to directly set the transmission cycle of the information of the construction machinery. To this end, the present disclosure enables the user or provider to set the transmission cycle for each information data packet. Further, the present disclosure previously determines various modes (e.g., a minimum charge mode, a medium charge mode, and a maximum charge mode) in which cycles of information data packets are set for each charge and enables the user or provider to set the transmission cycle by selecting the mode. Therefore, the user or provider can directly set the cycle for each packet or select the charge mode in accordance with a content of desired information and a desired communication cost condition. | 10-20-2011 |
20110257831 | Construction Equipment Information-Management System and Method Using a Communications - The present disclosure relates to a system and a method for information management of a construction machinery using a communication terminal mounted on the construction machinery. To this end, the information management system of the construction machinery of the present disclosure includes: a control server managing information of the construction machinery; a memory unit storing driving information of the construction machinery when the construction machinery is in a starting off state; and a communication terminal reading the corresponding information from the memory unit and transmitting the information to the control server when receiving a request for predetermined information from the control server. | 10-20-2011 |
20110257816 | REMOTE CONTROL SYSTEM AND METHOD FOR CONSTRUCTION EQUIPMENT - The present disclosure relates to a remote control system and a remote control method of a construction machine for reducing a fatigue degree of an operator at the time when the operator controls driving of the construction machine depending on his/her body motion in the remote control system of the construction machine. For this, according to the present disclosure, a value acquired by compensating for a predetermined value ε | 10-20-2011 |
20110253873 | Seat Base Sliding Apparatus - The present disclosure discloses a seat base sliding device applied to a seat of a heavy machinery such as a loader, an excavator, or the like. The seat base sliding device includes: a seat base with a lower part is fixed to a floor of a vehicle body and an upper part at which a seat is installed; a sliding plate slidable inwards and outwards in a lateral direction of the seat base at both left and right sides of the seat base and in which a control stand is fixed to one side thereof; and at least one adjustment unit selectively fixing the sliding plate of which the position is determined by sliding movement to the seat base. The present disclosure is capable of preventing a cabin from knocking against both control stands of a seat device at the time of assembling the cabin around the seat device and in addition, preventing the corresponding control stands from interfering in a thigh of a driver at the time of operating a control lever of each control stand laterally after assembling the cabin. | 10-20-2011 |
20110249923 | SINTERED BUSH - Provided is a sintered bush including a porous metallic sintered body including: a iron (Fe) based matrix containing a martensite structure; and one or more kind of metal matrix selected from copper (Cu), tin (Sn), and nickel (Ni), in which a lubricant which has oil separation of 5 to 10% at an operational temperature of 60 to 80° C. and is semisolid or solid at room temperature is impregnated in pores of the porous sintered body. | 10-13-2011 |
20110247441 | SPINDLE DRIVE - The present invention relates to a spindle drive. | 10-13-2011 |
20110243484 | Sliding Bearing With Improved Wear Resistance and Method of Manufacturing Same - The present invention relates to a sliding bearing with improved wear resistance which is manufactured in a sintered body type, and more particularly, to a bush type of sliding bearing that has excellent friction and wear characteristics with a shaft usually made of an iron-based material even under very poor sliding conditions of high-surface pressure, low speed, and irregularity, such that the lubrication cycle of may be extended, and also has excellent hardness such that load feed capability, plastic deformation suppression, and fatigue strength can be improved. | 10-06-2011 |
20110241904 | Communication Method for Monitoring Location of Construction Equipment - The present disclosure relates to a communication method for monitoring the position of a construction machine. The communication method according to the present disclosure includes: generating positional information of the construction machine and at least one piece of state information and at least one piece of operation information associated with the construction machine in the construction machine; and transmitting the generated information to a remote management unit which is positioned in a remote area from the construction machine by using a communication means, wherein the remote management unit partitions an area where the construction machine is movable and previously determines the amount and transmission cycle of information to be transmitted from the construction machine in accordance with the partitioned area, and the amount of information to be transmitted other than the positional information from the construction machine is reduced as the construction machine is distant out of a boundary line of the movable area, on the basis of the positional information received from the construction machine. According to the present disclosure, by controlling the amount and communication cycle of information to be transmitted according to a distance between the boundary line of the movable area and the construction machine, the more accurate positional information can be provided in a theft danger state or a theft state while keeping power consumption. | 10-06-2011 |
20110240147 | Fluid Flow Control Apparatus for Hydraulic Pump of Construction Machine - An apparatus for controlling the flow of a hydraulic pump of a construction machine according to the present disclosure includes: a pressure sensor detecting pressure signals corresponding to various control signal input values of the construction machine; a shuttle block including a plurality of shuttle valves dividing hydraulic lines connected with the pressure sensor into groups and extracting pressure oil of a hydraulic line under the highest pressure among hydraulic lines included in the corresponding group; auxiliary pressure sensors detecting the pressure of the pressure oil discharged from the shuttle block; electro proportional control valves in which opening rates are adjusted according to an applied signal and flows applied to signal lines are controlled to adjust discharge flows of main pumps; and a controller controlling the electro proportional control valves so that the opening rates of the electro proportional control valves are adjusted according to the magnitude of the pressure signal at the time of applying the pressure signal from the pressure sensor, wherein when the pressure sensor is judged as abnormal, the controller controls the operate rates of the electro proportional control valves to an opening rate corresponding to the magnitude of a signal outputted from the auxiliary pressure sensors. | 10-06-2011 |
20110235955 | SLIDING BEARING AND SLIDING BEARING ASSEMBLY - The present invention relates to a sliding bearing including a lubricating oil storing unit storing lubricating oil on the surface thereof and the sliding bearing of the present invention is provided so that the volume of the lubricating oil storing unit occupies 5 to 30 volume % of the entire volume of the sliding bearing. | 09-29-2011 |
20110220231 | BOOM CYLINDER CONTROL CIRCUIT FOR CONSTRUCTION MACHINE - The present disclosure includes a boom cylinder control circuit for a construction machine that includes a boom cylinder having an ascending-side chamber and a descending-side chamber. The boom cylinder control circuit for a construction machine includes: a first floating chamber that has first and second input ports connected to the descending-side chamber and the ascending-side chamber of the boom cylinder, respectively, at one side, and a first output port and a second output port connected with the drain tank, at the other side, and is switched to selectively connect the first and second input ports to the first and second output ports in accordance with an operational signal of the floating selection operation part; and a second floating valve of which one side is connected to the first output port of the first floating valve and the other side is connected to the drain tank to selectively connect the first output port with the drain tank in accordance with the operational signal of the floating selection operation part. | 09-15-2011 |
20110218087 | TOOL GRIPPER CHAIN BENDABLE IN TWO DIRECTIONS - The present disclosure relates to a tool gripper chain bendable in two directions that has a chain assembly that includes: gripper blocks that each have a first tooth at the center of a curved groove; first and second gripper assemblies that have first and second gripper members rotatably mounted on the rear of gripper blocks and grip a tool; first and second outer links that are formed in an arc shape; first and second inner links that are formed in an arc shape and disposed zigzag with respect to first and second outer links between first outer link and second outer link; and first and second collars that are disposed between first inner link and second inner link, in which first gripper assembly is disposed in front of second outer link, second gripper assembly is disposed ahead of second inner ink, and a first shaft hole of first gripper assembly and second shaft hole of second gripper assembly are coaxially arranged, such that first and second gripper assemblies are coupled by a first shaft or a second shaft. | 09-08-2011 |
20110197699 | STEERING SYSTEM FOR FORKLIFT - The present disclosure relates to a traveling control system for a forklift, and more particularly, to a traveling control system for a forklift that is additionally equipped with a forward/backward lever in a forklift equipped with a mono-pedal and improves operational convenience and work efficiency by selecting the mono-pedal and the forward/backward lever in accordance with the operational environment, and makes it possible to rapidly and conveniently perform inching of the forklift, by improving the structure of the mono-pedal to be rapidly operated without unnecessary operations. | 08-18-2011 |
20110192359 | PISTON COOLING APPARATUS - The present invention relates to a piston cooling device for cooling a piston. The piston cooling device according to an exemplary embodiment of the present invention includes: a cooling channel that is formed in a piston such that cooling fluid flows, and communicates with an intake port through which cooling fluid flows inside from the outside at a point and with an exhaust port through which the cooling fluid is discharged outside at another point; and a flow guide part that is formed in the cooling channel and guides the cooling fluid, which flows in the cooling channel through the intake port when the piston moves up or down, to flow to the exhaust port through the cooling channel. | 08-11-2011 |
20100276959 | CABIN MOUNTING STRUCTURE FOR CONSTRUCTION MACHINERY - A cabin mounting structure is applied to construction machinery in which a cabin for riding a driver is mounted on a vehicle body, the cabin mounting structure including: an up and down directional vibration damping unit for damping up and down directional vibration of the cabin, the up and down directional vibration damping unit being mounted between the cabin and the vehicle body; and a front and rear directional vibration damping unit for damping front and rear directional vibration of the cabin, the front and rear directional vibration damping unit 3 being mounted between the cabin and the vehicle body, wherein the cabin is connected to the vehicle body to be relatively movable in a front and rear direction. | 11-04-2010 |
20100274428 | MOTOR CONTROL METHOD AND CONTROL DEVICE FOR ELECTRICAL FORKLIFT TRUCK - A method for controlling a motor of an electrical forklift truck which includes at least one motor for traveling of the forklift truck or providing power to a pump that supplies power for operating a vehicle or oil to operational devices, a power module for controlling the power supply to the motors, and a control unit for controlling the power module and the motor, the method including the steps of: controlling to decelerate operating speed of the motor to be predetermined first decelerated speed by the control unit if a temperature of the motor and/or the power module increases and reaches a predetermined first level temperature value corresponding to the operating speed of the motor; and controlling to decelerate the operating speed of the motor to be predetermined second decelerated speed that is lower than the first decelerated speed by the control unit if the temperature of the motor and/or the power module increases in a state of the speed of the motor having been decelerated and reaches predetermined second-level temperature value that is higher than the first level temperature value and corresponds to the first decelerated speed. In this respect, the shutdown of the motor is postponed as long as possible so as to expend the operating time of the electrical forklift truck. Further, the shutdown of the motor can be postponed even without mounting the separate cooling apparatus, such as the cooling fan, so as to reduce the manufacturing cost. | 10-28-2010 |
20090274403 | Bearing Having Improved Consume Resistivity and Manufacturing Method Thereof - Disclosed is a composition for a bush-type bearing, a bush-type bearing manufactured using the composition, and a method of manufacturing the bush-type bearing. The bearing has excellent friction characteristics with a shaft made of iron (Fe) based material, and thus is able to increase the lubrication cycle of a lubricant. Further, the bearing has excellent hardness, and thus is able to prevent plastic deformation under high contact pressure. | 11-05-2009 |