B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
280/169
B62D 21/00 (2006.01) B60B 35/00 (2006.01) B62D 61/00 (2006.01) B62D 61/12 (2006.01)
Patent
CA 1138013
APPLICANT: VOLVO BM AB TITLE: VEHICLE WITH BOGIE-MOUNTED WHEELS AND RAISING DEVICE FOR A PAIR OF WHEELS ABSTRACT OF THE DISCLOSURE A vehicle such as a dumper with articulated steering has a load-carrying portion supported by two wheel-pairs mounted on bogies. One wheel-pair can be raised from the ground while the other, still on the ground, has softer suspension. In a vehicle with its two portions relatively swingable around a longitudinal axis, the two wheels on the ground are coupled so as to move relatively identically in relation to the vehicle frame. With one wheel-pair raised and the other suspended, the vehicle is still laterally stable. Spring suspension is obtained by tipping the bogies using a mechanism actuated by a hydraulic cylinder with a gas accumulator attached to the feeder line of the hydraulic cylinder. Gas spring suspension thus occurs only when one wheel-pair is raised.
348175
Swabey Ogilvy Renault
Volvo Bm Ab
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