Patent ID: 8523139
Filing Date: 2013-09-03
Classification: E02F,F15B

Abstract:
1. A selector valve operating mechanism for a working vehicle which operates a mechanical selector valve for controlling a hydraulic actuator, comprising: a hydraulic piston means connected through an operation link to a spool of the mechanical selector valve; an electromagnetic valve hydraulically controlling reciprocal action of the hydraulic piston means; and a control device transmitting an action signal to the electromagnetic valve, wherein by action control of the electromagnetic valve, the spool is moved via the hydraulic piston means and the operation link so as to operate the mechanical selector valve, wherein the hydraulic piston means comprises two hydraulic pistons respectively for moving the spool forward and rearward, and each of the hydraulic pistons is single acting type having a pressure oil chamber at only one of front and rear sides in the move direction of the piston, and wherein the operation link is interlockingly connected to the spool and is configured to move based on the movement of the hydraulic piston means.