| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable a manual oil passage switching mechanism to be operated by a hand wherein a handle grip of an oil pressure generating part is held. SOLUTION: The oil pressure generating part 2 and a hydraulic actuation part 3 are detachably connected together through an attaching/detaching mechanism 5. The generating part 2 is provided with the manual oil passage switching mechanism 11 composed of the starting switch 7a-equipped handle grip 7 like the grip of a gun, a spool valve 14 for sliding longitudinally so as to switch oil passages, an operating rod 16, and a sliding handle 18 located in the vicinity of the handle grip 7. Consequently, the sliding handle 18 is operated by the hand, wherein the handle grip 7 is held, in order to enable the control of the actuation part 3.</p> |
