| 摘要 |
PROBLEM TO BE SOLVED: To solve such problems that a worker erroneously releases a different valve and a working time is required for seeking a suitable valve in order to release differential pressure between a pressure oil feeding side to a hydraulic motor and a pressure oil discharge side since a large number of valves are arranged on a hydraulic traveling vehicle. SOLUTION: The traction device for releasing an oil pressure of the hydraulic motor when the hydraulic traveling vehicle is towed by the towing vehicle includes a throttle valve capable of performing switching to the closed state that it is fluidly connected between a pressure oil feeding side conduit of the hydraulic motor and a pressure oil discharge side conduit and a pressure oil flow is not generated between the pressure oil feeding side conduit and the pressure oil discharge side conduit and the opened state that the pressure oil flow is generated between the pressure oil feeding side conduit and the pressure oil discharge side conduit; a towing bar connected for traction of the towing vehicle and the hydraulic traveling vehicle; and a switching head for switching the throttle valve from the closed state to the opened state. The problem is solved by the above traction device. COPYRIGHT: (C)2011,JPO&INPIT
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