Two speed valve and bi-directional motor system - in which discharge fluid from two motors is recirculated through one or both motors

摘要

The two speed valve and bi-directional motor system has a pair of motors. Pressure fluid is delivered selectively to either side of the motors. A two speed valve receives fluid on one side of the motors to selectively direct the fluid to one or both motors to provide high or low speed operation. Flow sensors automatically connect the discharge from the motors to the motor not receiving fluid when the two speed valve is shifted to divert all fluid to one motor so that fluid is recirculated through the motor.