| 摘要 |
PURPOSE:To enable a remote operation from a driver's seat, by providing a manual engage/disengage mechanism and an automatic engage/disengage mechanism, which is made of a hydraulic cylinder and overlapped with the former and does not interfere with it. CONSTITUTION:To fit a locking plunger 4 into an engaging groove by a hydraulic cylinder 44 through a remote operation from a driver's seat, a kingpin is fitted in the pinch-holding portions of a pair of coupling hooks and the oil pressure to the cylinder is thereafter removed from it so that the locking plunger is returned together with a manual operating lever 41 and a main link 43 by a spring 30 and an engaging pin 15 is moved from a sliding surface 34 to an engaging part 17. As a result, the lever 41 is returned by a spring 13. At that time, a locking plate 25 is moved through a locking guide 47 and a stopper link 20 to close a hole 28, and the engaging pin 15 for the manual operating lever 41 is held by the engaging part 17. |
