| 摘要 |
PCT No. PCT/US80/01550 Sec. 371 Date Nov. 19, 1980 Sec. 102(e) Date Nov. 19, 1980 PCT Filed Nov. 19, 1980 PCT Pub. No. WO82/01693 PCT Pub. Date May 27, 1982.An idler recoil device (10) is utilized for track-type vehicles. The idler recoil device (10) protects a crawler track system (11) from damage when some foreign object, such as a rock, is trapped between an endless chain link assembly (28) and a chain supporting element (20,22,24,26) of the crawler track system (11). An idler link (30) is pivotally connected to a track frame (12) of the crawler track system (11) and a recoilable rear idler (24) is rotatably positioned on an idler hub (54) itself pivotally connected to said idler link (30). An increase in tension on said endless chain link assembly (28) causes said idler hub (54) to rotate away from said endless chain link assembly (28) decreasing track path length and, consequently, tension. This rotation is resiliently resisted by a recoil pad (66) mounted between said idler hub (54) and said idler link (30). A tensile link (68) prevents any recoil up to a preselected endless chain link assembly (28) tension.
|
