초록 ▼

Endless rubber track laying machines are provided with a pair of track laying assemblies positioned on opposite sides of the work machine. Each track laying assembly includes an endless rubber belt entrained around a drive wheel, an idler wheel, and a plurality of supporting mid-rollers. A fluid cyl

Endless rubber track laying machines are provided with a pair of track laying assemblies positioned on opposite sides of the work machine. Each track laying assembly includes an endless rubber belt entrained around a drive wheel, an idler wheel, and a plurality of supporting mid-rollers. A fluid cylinder is connected to the idler wheel for tensioning the endless rubber belts. The present recoil activated valve includes a two position poppet valve positioned between the fluid cylinder and an accumulator. With this recoil activated valve the tensioning system locks the fluid cylinder as the work machine traverses side slopes. Thus, a simple system is provided that can be solely fluid actuated or actuated by an electronic monitoring system, thereby providing a system that reduces the possibility of the endless rubber track from un-tracking.

대표청구항 ▼

1. A track tensioning system (26) comprising:an idler wheel (32) being in contact with an inner surface (20) of an endless track (16); a fluid cylinder (34) mechanically coupled with said idler wheel (32); an accumulator (50) in fluid communication with said fluid cylinder (34); and a recoil activat

1. A track tensioning system (26) comprising:an idler wheel (32) being in contact with an inner surface (20) of an endless track (16); a fluid cylinder (34) mechanically coupled with said idler wheel (32); an accumulator (50) in fluid communication with said fluid cylinder (34); and a recoil activated valve (46) in fluid communication with and positioned between said fluid cylinder (34) and said accumulator (50) and automatically operatively blocks communication to said accumulator (50) in response to recoil.