| 摘要 |
<p>PURPOSE:To enable the inching operation of the device in the caption and to aim at its miniaturization and simplification by providing slidably a piston and a pressure governing valve body to be oppositely energized in a cylinder inner port, and sliding the piston and pressure governing valve body with sliding operation of a rod. CONSTITUTION:When a rod 45 is pulled out to the preset position, a pressure governing passage 38 is closed and a cylinder inner port 31 on the pressed face side of a piston 32 is communicated with a pressure reducer 56. The cylin der inner port 31 is communicated with a drain port 44 through a pressure reducing passage 56, while the fluid pressure in the cylinder inner port 31 is reduced and the piston 32 is pushed back to its original position. Accordingly, the pressure of springs 34 and 35 decreases and a pressure governing valve body 33 is oppositely pressed with the working oil of a supply passage 37. In addition, a relief passage 43 is opened so that the pressure in the supply passage 37 is reduced and a hydraulic clutch 9 or 10 is in a half-clutch condition. An inching operation is, performed by sliding the rod 45, in this way.</p> |
