Arrangement intended for driving a trackbound towing unit...

B - Operations – Transporting – 61 – C

Patent

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B61C 11/00 (2006.01) B61B 13/12 (2006.01)

Patent

CA 2076631

2076631 9112982 PCTABS00007 The invention relates to an arrangement for driving a trackbound traction unit and being self-adjusting in both the forward and rearward directions. The arrangement includes at least two drive wheels (1) with associated transmissions (2), two carrier arms (3) whose longitudinal axes are substantially parallel with the longitudinal direction of the traction unit and on one end of which the drive wheels are journalled, a holder (4) in which the other end of the carrier arms is pivotally journalled by means of spherical bearings (5), a hydraulic piston-cylinder device (6) which is connected to the first-mentioned ends of the carrier arms, and a rail (7) which is fixedly mounted to the chassis in the centre of the track. The carrier arms (3) are substantially perpendicular to the geometric axes of the drive wheels (1) and are intended to swing the drive wheels (1) into pressure abutment with the centre rail (7) through the medium of the hydraulic piston-cylinder device (6). The arrangement is mainly characterized in that it includes a substantially elongated rectangular frame (R) from which the holder (4) projects, resilient devices (FO) from which the frame is pivotally suspensed on the chassis (U) of the traction unit, coupling devices (T, K) for resilient coaction between the frame and the chassis, and hydraulic holding piston-cylinder devices (H) for mutually coupling the coupling devices (T, K) when the traction unit is driven.

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