B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
B62D 11/24 (2006.01) B62D 15/00 (2006.01) B62D 49/06 (2006.01) B62D 55/02 (2006.01)
Patent
CA 2090329
2090329 9305996 PCTABS00021 A track-type vehicle (10) having first and second endless track assemblies (20, 22) and first and second steerable wheels (16, 18) includes a weight management apparatus (29) including a measuring assembly (36) for measuring the angle of steer of the steerable wheels (16, 18), a hydraulic cylinder (30) connected between the frame (12) of the vehicle (10) and the axle (14) of the steerable wheels (16, 18), and an actuating device (50) for actuating control valves (34) which control pressure of the presurized fluid to the hydraulic cylinder (30). Controlling the pressure of the pressurized fluid supplied to the hydraulic cylinder (30), as a function of the angle of steer of the steerable wheels (16, 18), changes the ground pressure applied by the steerable wheels (16, 18) and the track assemblies (20, 22). The pressure of the fluid supplied to the hydraulic cylinder (30) also determines the amount of contact the track assemblies (20, 22) have with the ground. Sterring of track-type vehicles is more difficult than wheel-type vehicles due to the large contact area of the track assemblies with the ground. The subject weight management apparatus (29) reduces the contact area of the track assemblies (20, 22) and provides easier steering of the vehicle (10).
Satzler Ronald L.
Schmillen Edward E.
Caterpillar Inc.
Kirby Eades Gale Baker
LandOfFree
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