Class / Patent application number | Description | Number of patent applications / Date published |
299042000 | Sidewall-working (e.g., longwall cutter) | 23 |
20100237683 | SHEARER LOADER FOR UNDERGROUND MINING COMPRISING A SPRAY SYSTEM - A shearer loader for underground mining, the shear loader comprising a shearer loader body, at least one cutting drum fastened to a supporting arm joined to the loader body, a first drive motor for moving the shearer loader and a second drive motor for moving the cutting drums, a cooling water circuit for cooling the first and second drive motors, the cooling water circuit including an inlet and a return line, a spray system including at least one spray water circuit, the spray system including a feed line fluidly connecting a common water connection to the cutting drums, the spray system further including a valve in the feed line for switching the spray water circuits on and off, a control valve connected between the feed line of the spray water circuit and the return line of the cooling water circuit, the control valve allowing selective flow from the cooling water circuit to be directed to the cutting drums. | 09-23-2010 |
20100301660 | COOLING A RANGING ARM GEAR CASE ON A LONGWALL SHEARER - A cooling system for the gear case in the ranging arm of a longwall shearer, the ranging arm including a plurality of single gears mounted in a row within an elongated housing. The cooling system includes a coolant injection system in each of the single gears, each coolant injection system including a longitudinal opening in the gear axle, and a coolant injection tube mounted inside the longitudinal opening. The coolant injection tube has a diameter smaller than the diameter of the longitudinal opening. A coolant supply line is connected to and in communication with the coolant injection tube, and a coolant outlet is connected to and in communication with the longitudinal opening adjacent the one end of the longitudinal opening, so that coolant leaving the end of the coolant injection tube travels back along the coolant injection tube and then out of the gear axle thereby removing heat from the single gear. | 12-02-2010 |
20110309669 | COOLING A RANGING ARM GEAR CASE ON A LONGWALL SHEARER - A longwall shearer or other machine with a gear case for transmitting rotational power from a drive to a driven member. The gear case comprises a drive, a driven member, at least one axle including at least one aperture formed therein to circulate cooling fluid through the axle, and a gear mounted to rotate on the axle and positioned to transmit power from the drive to the driven member. | 12-22-2011 |
20120187746 | FIBER OPTIC CABLE PROTECTION IN A MINING SYSTEM - A chain link assembly, a cable chain assembly and a mining system. The cable handler individual links may include an enclosed section for the fiber optic cable separate from other services for the machine. A flexible material or other structure may assemble the fiber optic cable in the cable handler in a manner in which it “snakes” about the centerline to provide ample slack in the fiber optic cable to, for example, prevent over tension. | 07-26-2012 |
20130082510 | SLOW TURNING DRUM FOR A MINER - Methods and systems for turning a cutting drum of a mining machine at a maintenance speed. One mining machine includes a cutting drum with a plurality of bits mounted on the drum and a cutting drum turning mechanism. The cutting drum turning mechanism includes a power source, a cutter motor, a switch, and a variable frequency drive. The state has a first and a second state. The first state electrically couples the power source and the cutter motor to operate the cutting drum at a cutting, and the second state electrically couples the variable frequency drive and the cutter motor to operate the cutting drum at a maintenance speed less than the cutting speed. | 04-04-2013 |
20130154341 | ARTICULATED SHEARER - A longwall shearer mining machine that is mounted on a rail generally includes a first chassis portion with a first cutting arm mounted thereto and a second chassis portion with a second cutting arm mounted thereto. Each of the first and the second chassis portions is slidably coupled to the rail. The first and second chassis portions are coupled at a pivot joint. The pivot joint allows each of the first and the second chassis portions to adjust its respective orientation with respect to a horizontal ground plane when the articulated shearer travels over a hump or a valley, thereby maintaining sufficient headroom. | 06-20-2013 |
20140265527 | LOW-PROFILE MECHANICAL CONNECTION FOR A DRIVE ARRANGEMENT - A mining machine including a frame, a motor, a drive shaft having a first end and a distal end, a driven component coupled to the drive shaft at the distal end, and a connector assembly between the motor and the drive shaft. The connector assembly including a connection mechanism operable to drivingly connect the motor and the drive shaft, and an adjustment mechanism operable to adjust the connection mechanism between a connected condition, in which the connection mechanism drivingly connects the motor and the drive shaft, and a disconnected condition, in which the driving connection between the motor and the drive shaft is disengaged, the adjustment mechanism including an actuator pivotable about an axis between a connected position corresponding to the connected condition of the adjustment mechanism and a disconnected position corresponding to the disconnected condition of the adjustment mechanism, the actuator being axially fixed relative to the frame. | 09-18-2014 |
20140265528 | CUTTER HEAD FOR LONGWALL SHEARER - A cutter head for a longwall shearer includes a drum, a vane, and a plurality of cutting bits. The drum includes a first end and a second end and defines an axis of rotation extending therebetween. The vane is connected to the drum and extends in a helical manner along at least a portion of the axis. The vane defines an edge surface extending along an outer perimeter of the vane. The cutting bits are secured to the vane edge surface. Each cutting bit includes a block and a bit coupled to the block. The block is secured to the edge surface and extends beyond the outer perimeter of the vane. | 09-18-2014 |
299043000 | With material-handling means | 13 |
20090066147 | CONVEYOR PAN WITH IMPROVED EDGE SHAPING - A conveyor pan for use with a shearer with a skid-type shoe in a longwall mining operation, the conveyor pan including a side member having a surface adapted to be engaged by the shearer skid-type shoe, the surface being formed by a piece of the side member that extends horizontally for the length of the side member. The piece has a first end and a second end, each piece end having a top, a rear, a front and an edge. The first end edge and the second end edge are each formed by each edge being between 45 degrees removed from a vertical plane extending at 90 degrees to the horizontal plane formed by the side member surface. | 03-12-2009 |
20100019563 | GUIDE SHOE FOR A ROLLER-TYPE LOADER AND WEAR INSERTS FOR GUIDE SHOES - The invention relates to guide shoe for a shearer loader, in particular for a shearer-loader drive assembly, comprising at least one base wall | 01-28-2010 |
20110163590 | Longwall Equipment Having Vertically Adjustable Disc Shearer Loader Guided on the Face Conveyor - Longwall equipment for mechanical extraction, especially in underground coal mining, including a face conveyor disposed along a longwall face, a disc shearer loader that includes a machine body that rests, and is guided, upon the face conveyor and includes two shearing discs pivotably disposed thereon, with the machine body extending over the face conveyor and forming a portal that prescribes a maximum loading cross-section of the face conveyor, a lifting mechanism mounted on the machine body for guiding it on the face conveyor in a vertically adjustable manner and for variably adjusting the portal cross-section, a drive element height-adjustably disposed on the machine body and engaging an abutment fixedly disposed on the face conveyor, and shield support units that include top canopies that project toward the disc shearer loader. | 07-07-2011 |
20110181095 | RACK BAR HAULAGE SYSTEM WITH AN IMPROVED RACKBAR TO LINE PAN CONNECTION - A disclosed rack bar system utilizes a forged or cast clog with integral lugs that accept a retainer plate. The plain rack bar pins cannot pass fully through the clog and are held in place by a plate retainer. The retainer is simply secured by a spring pin, or is held in place by gravity. | 07-28-2011 |
20110181096 | RACK BAR HAULAGE SYSTEM WITH AN IMPROVED RACKBAR TO LINE PAN CONNECTION - A rack bar haulage system forms part of a drive system for moving the mining machine along a conveyor including a plurality of conveyor pans. The pans are arranged end to end, and the rack bar haulage system includes a plurality of rack bars, each rack bar end including a pillar portion extending downwardly. One rack bar is adapted to be mounted adjacent an end of a line pan, and another rack bar is adapted to be mounted adjacent the adjacent end of the adjacent line pan. The haulage system also includes a chain-link, the chain-link surrounding and engaging the two adjacent pillar portions on the ends of the one rack bar and the adjacent other rack bar. The chain-link is adapted to extend over the adjacent ends of the line pans. The haulage system also includes a clog for receiving the rack bar, the clog including an extension that engages the chain-link and traps the chain link between the extension and the rack bar. | 07-28-2011 |
20120038205 | EXTRACTION SYSTEM FOR MINERAL EXTRACTION AND RETAINING DEVICE FOR A SENSOR SYSTEM THEREFOR - The invention relates to an extraction system for mineral extraction, having a machine frame which is movable along a conveying device and which for each direction of travel, on its front side that, in operation, lies facing a working face, has hewing tools for the minerals to be won, and having a sensor system, disposed on the machine frame, for mineral/host rock recognition. In order to provide an extraction system which can be provided with or used with an improved sensor system, a retaining box for the sensor device is fastened in projecting arrangement to the front side of the machine frame, the retaining box preferably containing a georadar as the sensor system. | 02-16-2012 |
20120104832 | DRIVE MECHANISM FOR A LONGWALL MINING MACHINE - A mining machine for mining along a mining face includes a longwall shearer, a product removal system for removing product cut by the longwall shearer, and a drive system for moving the longwall shearer along a rack extending along the mining face. The drive system including a housing coupled to the longwall shearer, a motor, and a sprocket at least partially positioned within the housing and drivingly connected to the motor. The sprocket is engaged with the rack and moves the longwall shearer along the rack. A shoe maintains the sprocket in engagement with the rack. The housing is configured to rotate relative to the longwall shearer such that the drive system adjusts for vertical height variations and horizontal variations of the rack. | 05-03-2012 |
20120267940 | MATERIAL GUIDE ASSEMBLY - A guide assembly for a longwall shearer. The shearer includes an arm having an arm end and a cutting drum rotatably coupled to the arm end. The cutting drum rotates about a drum axis and engages a mine wall, and the cutting drum has a rear extent arranged in a plane substantially perpendicular to the drum axis. The guide assembly includes a guide member coupled to the arm and operable to guide material won from the mine wall. The guide member has a guide surface extending in a direction non-parallel to the plane and non-parallel to the drum axis. The guide member guides material along the guide surface away from the cutting drum. | 10-25-2012 |
20130207443 | ARMORED FACE CONVEYOR - An armored face conveyor includes a plurality of line pans positioned adjacent to one another, a plurality of flight bars, and a connecting member. Each line pan includes a race having an outer race face and an inner race face. The plurality of flight bars extend laterally across the line pans and are received by the race. Each flight bar includes an end having an upper guide surface and a lower guide surface. The connecting member extends through the plurality of flight-bars and couples the flight-bars to one another. Lateral movement of any one of the flight-bars that causes the upper guide surface to contact the outer race face substantially simultaneously causes the lower guide surface to contact the inner race face. | 08-15-2013 |
20130313887 | LINEPAN AND LONGWALL MINING MACHINE - A longwall mining machine and a linepan section, the linepan section may include a face-side rail, a gob-side rail opposite the face-side rail, and a conveyor pan between the face-side rail and the gob-side rail. The face-side rail may have a generally horizontal top surface at a top surface height and with a top surface width, an angled loading surface extending toward the mining face and the ground surface and arranged at an oblique angle relative to the top surface, the loading surface being at a loading height and with a loading surface width, the loading surface width being at least about 25 percent of the total width, and a material cavity defined in the face surface below the loading surface and recessed toward a gob-side. | 11-28-2013 |
20140084666 | LUMP BREAKER FOR MINING MACHINE - A longwall shearer is positioned adjacent a face conveyor for transporting material that is cut from a mining face. The longwall shearer includes a chassis, an arm pivotably coupled to the chassis, a cutting drum for engaging the mining face, and a lump breaker for engaging material on the face conveyor. The chassis includes a first end and a second end, and the chassis is movable in at least a first direction that is generally parallel to the mining face. The cutting drum is rotatably supported on the arm. The lump breaker is pivotably coupled to the chassis about an axis, and the lump breaker includes at least one tooth for breaking apart the cut material. | 03-27-2014 |
20150008720 | DRIVE MECHANISM FOR A LONGWALL MINING MACHINE - A drive assembly for a mining machine. The drive assembly includes one-and-only-one sprocket and a housing coupled to the mining machine. The housing includes a shoe and at least partially receives the sprocket. The drive assembly also includes a motor and a drive shaft that couples the sprocket and the motor. The drive shaft rotates the sprocket and defines a longitudinal axis. The housing rotates relative to the mining machine about the longitudinal axis and in a face-to-gob direction. | 01-08-2015 |
20150076893 | ARMORED FACE CONVEYOR - An armored face conveyor includes a plurality of line pans positioned adjacent to one another, a plurality of flight bars, and a connecting member. Each line pan includes a race having an outer race face and an inner race face. The plurality of flight bars extend laterally across the line pans and are received by the race. Each flight bar includes an end having an upper guide surface and a lower guide surface. The connecting member extends through the plurality of flight-bars and couples the flight-bars to one another. Lateral movement of any one of the flight-bars that causes the upper guide surface to contact the outer race face substantially simultaneously causes the lower guide surface to contact the inner race face. | 03-19-2015 |
299047000 | Driven flexible member causes advance | 1 |
20100320828 | DRIVE STATION FOR AN UNDERGROUND PLOUGH SYSTEM AND METHOD FOR REPAIRING RECOVERY PLOUGHS - The invention relates to a drive station for an underground plough system, in particular a coal plough system, with a machine frame to which a plough box can be fastened, and with a wedge trough which is connected to the machine frame and is provided with a plough guide device, which has chain channels for a plough chain, and also a plough end stop on a runout section for a winning plough. In order to facilitate the repair of a winning plough, the plough end stop is formed on an attachment which can be dismantled, when the plough guide device is mounted, to produce a repair section in the longwall-gallery transition of the wedge trough. The invention also relates to a repair method in which the plough end stop is dismantled and the winning plough is moved into the repair section. | 12-23-2010 |
299053000 | Vertical cutter tooth orbit | 1 |
20160102549 | CUTTER HEAD FOR LONGWALL SHEARER - A cutter head for a mining machine includes a first end and a second end with a drum axis extending between the first and the second ends. The cutter head also includes a web coupled to the second end of the drum. The web includes a plurality of arcuate apertures. Each arcuate aperture extends through an angle about the drum axis. The cutter head further includes a plurality of first ribs coupled to the web. Each of the first ribs is positioned between adjacent arcuate apertures. The cutter head also includes a plurality of second ribs coupled to the web. Each of the second ribs extend across one of the plurality of arcuate apertures. A first angle that extends between one of the first ribs and an adjacent one of the second ribs is different than a second angle extending between the one first rib and another adjacent second rib. | 04-14-2016 |