Abstract: A track roller assembly for a work machine including a track roller frame with drive and idler wheels and an endless track disposed about the wheels, mid-rollers located between the drive and idler wheels, each mid-roller having a shaft mounted on a bogie frame and a pair of mid-roller hubs having roller wheels mounted on the shaft, one mid-roller hub and wheel on either side of the bogie frame, each mid-roller hub having a guide facing guide blocks, an alignment sensing mechanism to detect misalignment of the track, where the alignment sensing mechanism includes at least one sensor paddle mounted on the bogie frame such that a lobe of the sensor paddle resides adjacent the guide blocks such that sideways movement of the endless track belt causes the guide blocks to contact the sensor paddle before contacting the mid-rollers.

Abstract: A track roller assembly for a work machine including a track roller frame with drive and idler wheels and an endless track disposed about the wheels, mid-rollers located between the drive and idler wheels, each mid-roller having a shaft mounted on a bogie frame and a pair of mid-roller hubs having roller wheels mounted on the shaft, one mid-roller hub and wheel on either side of the bogie frame, each mid-roller hub having a guide facing guide blocks, an alignment sensing mechanism to detect misalignment of the track, where the alignment sensing mechanism includes at least one sensor paddle mounted on the bogie frame such that a lobe of the sensor paddle resides adjacent the guide blocks such that sideways movement of the endless track belt causes the guide blocks to contact the sensor paddle before contacting the mid-rollers.

Abstract: A track roller assembly for a work machine includes a track roller frame with drive and idler wheels and an endless track disposed about the wheels. Mid-rollers are located between the drive and idler wheels. Each mid-roller has a shaft mounted on a bogie frame and a pair of mid-roller hubs having roller wheels attached thereon mounted on the shaft, with one mid-roller hub and wheel on either side of the bogie frame. Each mid-roller hub has a guide facing the guide blocks. The track roller assembly has an alignment sensing mechanism to detect misalignment of the track. An adjustment mechanism is configured to adjust the alignment of the track in relation to the drive and idler wheels. A controller receives input from the sensor when the sensor paddle is moved to the misaligned position and causes the adjustment mechanism to adjust the alignment of the endless track belt.

Abstract: An undercarriage assembly for a work machine including a drive wheel; front and rear idler wheels; an endless track belt about the drive and idler wheels; mid-rollers located between the front and rear idler wheels to engage the endless track belt; a track roller frame mounted on the machine at a main pivot, between front and rear ends of an elongate member, with the front idler wheel connected near the front end of the roller frame; a major bogie connected to the roller frame at a major bogie pivot, and the rear idler wheel connected to a trailing arm of the major bogie; a minor bogie, mounted on a forward arm of the major bogie, and pivotably connected to the major bogie at a minor bogie pivot, and including front and rear axles, supported by a suspension that provides damping between the front and rear axles and the minor bogie pivot.

Abstract: An apparatus having an accumulator fluidly coupled to a cylinder having a moveable rod and a pressure relief valve, the cylinder configured to produce an increase in resistance to retraction of the cylinder by re-routing fluid flow to the accumulator through the pressure relief valve after the rod has reached a defined retraction distance.

Abstract: There is described a wheel for use with an endless track system, the wheel comprising at least three substantially identical segments. Each of the segments comprising a support portion, a circumferential flange, and a rim portion. The rim portion is affixed to an outer face of the circumferential flange.

Abstract: A track roller assembly for a work machine includes a drive and idler wheels and an endless track belt disposed about the wheels. The idler wheel is mounted on a track roller frame track roller frame with a swing link. The work machine has an adjustment mechanism configured to adjust the alignment of the endless track belt in relation to the drive and idler wheels. The adjustment mechanism includes a transverse pivot pin connected to a downward projecting lobe of the swing link. A lever is connected to the pivot pin. The adjustment mechanism includes a drive mechanism, wherein a proximal end of the lever interacts with the drive mechanism such that the drive mechanism controls a position of the lever, wherein movement of the lever moves the pivot pin causing an adjustment in the position of the idler wheel and the alignment the endless track belt that rides thereon.

Abstract: An undercarriage assembly for a work machine including a drive wheel; a front idler wheel rotatable on a front axle; a rear idler wheel rotatable on a rear axle; an endless track belt about the drive and idler wheels; a number of mid-rollers located between the front and rear idler wheels to engage the endless track belt on a lower run; a track roller frame pivotably mounted on the work machine at a main pivot, including an elongate member with a front end and a rear end with the main pivot located between the front end and the rear end and the front idler wheel connected near the front end of the track roller frame; a major bogie including forward and trailing bogie arms, the major bogie pivotably connected to the track roller frame at a major bogie pivot, and the rear idler wheel connected to the trailing bogie arm; a minor bogie, mounted on the forward bogie arm, the minor bogie pivotably connected to the major bogie at a minor bogie pivot, and including a minor bogie suspension, a minor bogie front axle,