초록 ▼

An automatic differential locking system for a working vehicle having steerable front and rear wheels, which includes a selector for selecting a steering mode of the vehicle, an actuator for operating a differential locking mechanism, and a gate for sending a control signal to the actuator in respon

An automatic differential locking system for a working vehicle having steerable front and rear wheels, which includes a selector for selecting a steering mode of the vehicle, an actuator for operating a differential locking mechanism, and a gate for sending a control signal to the actuator in response to a signal received from the selector. The gate is adapted to send a differential locking signal to the actuator upon receipt of a parallel steering mode signal from the selector. In response to the differential locking signal the actuator actuates the differential locking mechanism. Since differential revolutions of the wheels are limited at times of parallel steering, the vehicle is capable of accurate course revisions and alterations without slipping.

대표청구항 ▼

A working vehicle having an automatic differential locking system, comprising a vehicle body including a pair of front wheels and a pair of rear wheels steerable in a plurality of steering modes including a parallel steering mode, a steering mechanism for determining the steering amount for the fron

A working vehicle having an automatic differential locking system, comprising a vehicle body including a pair of front wheels and a pair of rear wheels steerable in a plurality of steering modes including a parallel steering mode, a steering mechanism for determining the steering amount for the front and rear wheels, selector means for selecting one of the steering modes, steering control means for steering the front and rear wheels in response to the steering amount determined by the steering mechanism and to the steering mode selected by the selector means, a differential locking mechanism for at least one of the front wheel pair and the rear wheel pair for limiting differential revolutions of the wheels, actuator means for actuating and releasing the differential locking mechanism, and gate means for sending a control signal to the actuator means in response to a signal received from the selector means, wherein the actuator means maintains the differential locking mechanism in operation in all steering modes when the steering amount is below a predetermined level, and the gate means sends a signal to the actuator means to release the differential locking mechanism only when the selector means is in a mode other than the parallel steering mode and the steering amount exceeds the predetermined level.