Patent ID: 7690471

Claim:
A hydraulic-drive work vehicle comprising: an engine; a variable capacity hydraulic pump which is driven by the engine; a plurality of axles arranged in a fore-aft direction of the vehicle, each of the axles being provided with a plurality of wheels; a plurality of variable capacity hydraulic motors, each motor being connected and configured to drive the wheels of a respective one of the axles, wherein the motors are driven by pressure oil from the hydraulic pump; and a traveling stabilizer, wherein the traveling stabilizer includes: a traveling-state detector for detecting a traveling state of the work vehicle; and a control means adapted to receive a signal from the traveling-state detector and to vary a capacity of at least one of the motors according to the detected traveling state of the work vehicle, whereby the driving force applied to all of the driven wheels of the respective axle driven by the at least one of the motors is varied according to the detected traveling state of the work vehicle, wherein the axles include a front axle and a rear axle of the work vehicle, and wherein the control means is adapted to control a capacity of the hydraulic motor corresponding to the rear axle to be relatively increased to be higher than a capacity of the hydraulic motor corresponding to the front axle when the traveling state of the work vehicle is stable, so as to increase swinging ability.