FOUR-WHEEL DRIVE TRACTOR FOR AGRICULTURE

摘要

PROBLEM TO BE SOLVED: To provide an agricultural four wheel drive tractor to whose rear body portion a ground working machine is liftably connected and which has improved turning operability at the edge of a ride, when equipped with a front wheel speed-changing device which is switched into an accelerated state that the front wheels are driven at a higher speed than that of the rear wheels at the turning. SOLUTION: This four-wheel drive tractor for agriculture, provided with an automatic lifting means for automatically upward operating an actuator 57 for a ground working machine 56 in interlock with a front wheel speed- changing device, when the front wheel speed-changing device is switched from a standard state into an accelerated state on turning at the edge of a ridge.