Abstract: An interface between a guide shoe of a mining machine and a rack includes a first surface positioned on the guide shoe. and a second surface positioned on the rack. At least one of the first surface and the second surface including a profile oriented at an oblique angle relative to a plane of the rack.

Abstract: A rackbar for a mining machine has a body including a first end and second end, an inner rack wall, an outer rack wall spaced from the inner rack wall, a plurality of gear teeth extending between the inner rack wall and the outer rack wall, an extension disposed adjacent the first end, a pin aperture positioned on the extension, and a rib extending along a surface of the extension. The inner and outer rack walls extend between the first end and the second end parallel to a rack axis. The extension extends in a direction perpendicular to the rack axis. The pin aperture is configured to receive a pin.

Abstract: An interface between a guide shoe of a mining machine and a rack includes a first surface positioned on the guide shoe. and a second surface positioned on the rack. At least one of the first surface and the second surface including a profile oriented at an oblique angle relative to a plane of the rack.

Abstract: A rackbar for a mining machine has a body including a first end and second end, an inner rack wall, an outer rack wall spaced from the inner rack wall, a plurality of gear teeth extending between the inner rack wall and the outer rack wall, an extension disposed adjacent the first end, a pin aperture positioned on the extension, and a rib extending along a surface of the extension. The inner and outer rack walls extend between the first end and the second end parallel to a rack axis. The extension extends in a direction perpendicular to the rack axis. The pin aperture is configured to receive a pin.

Abstract: An interface between a guide shoe of a mining machine and a rack includes a first surface positioned on the guide shoe. and a second surface positioned on the rack. At least one of the first surface and the second surface including a profile oriented at an oblique angle relative to a plane of the rack.

Abstract: A guide shoe for a mining machine includes a shoe body, a through hole, and a support. The shoe body is configured to engage a rack. The through hole extends between a first wall of the shoe body and a second wall of the shoe body, and the through hole extends along a central axis. The support is coupled to the first wall, and the support is configured to engage a shaft coupled to a drive sprocket engaging the rack. At least one of the shaft and the support is movable between a first configuration and a second configuration. The rotation axis is spaced apart from the rack by a first sprocket distance in the first configuration, and the rotation axis is spaced apart from the rack by a second sprocket distance in the second configuration.

Abstract: A guide shoe for a mining machine includes an elongated shoe body, a slot, an insert coupled to the shoe body, and a retainer secured to the shoe body. The shoe body includes a first end, a second end, a first wall, and a second wall. The slot extends between the first end and the second end along a slot axis, and the slot extends along the first wall and the second wall. The insert is positioned between the shoe body and the slot axis and extends along at least a portion of a perimeter of a cross-section of the slot. The insert includes an end positioned adjacent the first end of the shoe body. The retainer abuts the end of the insert to secure the insert against movement relative to the shoe body in a direction parallel to the slot axis.

Abstract: A cutting device support for a mining machine includes a ranging arm, a bracket positioned adjacent an end of the ranging arm, and a thermally-expandable coupling member positioned between the bracket and the ranging arm. The coupling member exerts a force on the bracket and the ranging arm to secure the bracket to the ranging arm.

Abstract: A system for guiding movement of a chassis of a mining machine along a rack includes a shoe and a fluid line for receiving fluid from a fluid source. The shoe is configured to be coupled to the chassis and slidably engage the rack. The shoe is configured to extend at least partially around the rack. The shoe includes a first end, a second end, an inner surface, and an outer surface. At least a portion of the inner surface is configured to be positioned adjacent the rack. The fluid line includes an outlet positioned proximate the shoe for dispensing the fluid at an interface between the shoe and the rack.

Abstract: A guide shoe for a mining machine includes an elongated shoe body, a slot, an insert coupled to the shoe body, and a retainer secured to the shoe body. The shoe body includes a first end, a second end, a first wall, and a second wall. The slot extends between the first end and the second end along a slot axis, and the slot extends along the first wall and the second wall. The insert is positioned between the shoe body and the slot axis and extends along at least a portion of a perimeter of a cross-section of the slot. The insert includes an end positioned adjacent the first end of the shoe body. The retainer abuts the end of the insert to secure the insert against movement relative to the shoe body in a direction parallel to the slot axis.

Abstract: A system for guiding movement of a chassis of a mining machine along a rack includes a shoe and a fluid line for receiving fluid from a fluid source. The shoe is configured to be coupled to the chassis and slidably engage the rack. The shoe is configured to extend at least partially around the rack. The shoe includes a first end, a second end, an inner surface, and an outer surface. At least a portion of the inner surface is configured to be positioned adjacent the rack. The fluid line includes an outlet positioned proximate the shoe for dispensing the fluid at an interface between the shoe and the rack.

Abstract: A shearer mining machine generally includes a first chassis module, a second chassis module, one or more cleats, and means for securing each cleat on the first and second chassis modules. The first chassis module has a first mating surface and a first opening spaced from the first mating surface. The first opening is defined by a first wedge-shaped module wall positioned adjacent the first mating surface. The second chassis module has a second mating surface and a second opening spaced from the second mating surface. Each cleat includes a first projection, a second projection, and a bridge portion extending between the first projection and the second projection. The first projection is received by the first opening and includes a wedge-shaped cleat wall for engagement with the first wedge-shaped module wall. The means for securing apply a clamp force normal to the wedge-shaped cleat wall.

Abstract: A shearer mining machine generally includes a first chassis module, a second chassis module, one or more cleats, and means for securing each cleat on the first and second chassis modules. The first chassis module has a first mating surface and a first opening spaced from the first mating surface. The first opening is defined by a first wedge-shaped module wall positioned adjacent the first mating surface. The second chassis module has a second mating surface and a second opening spaced from the second mating surface. Each cleat includes a first projection, a second projection, and a bridge portion extending between the first projection and the second projection. The first projection is received by the first opening and includes a wedge-shaped cleat wall for engagement with the first wedge-shaped module wall. The means for securing apply a clamp force normal to the wedge-shaped cleat wall.