Bracket strap tension device for power-driven vehicles and the strap bracket unit including such strap tension device

摘要

PCT No. PCT/SE96/00720 Sec. 371 Date Dec. 16, 1997 Sec. 102(e) Date Dec. 16, 1997 PCT Filed May 31, 1996 PCT Pub. No. WO97/00191 PCT Pub. Date Jan. 3, 1997A resilient track-tensioning device for tracked automotive vehicles has a track tensioning wheel arrangement (26) which includes a generally elongated pendular arm (38) which rotatably supports a track-tensioning wheel unit (62), a pretensioning or biassing arm (72) which is much shorter than the pendular arm and which has a first end-part for force transmission engagement with the pendular arm (38) at its end-part (74) that carries the track-tensioning wheel unit (62), and a second end-part for pivotal attachment to a carrier (20) through the medium of a pretensioning or biassing means (76). The device further includes an element (66) for adjustably fixing the distance between the rotational center of the track-tensioning wheel unit (62) and the attachment point (46) of the pendular arm (38). The invention also relates to a track support assembly which includes an inventive track-tensioning device.