| 摘要 |
<p>An attachment device for releasably attaching a grapple (10) to the end of a boom (12) includes a grapple body (34, 36) which mounts main and linkage pins (138, 140) which releasably couple with double pin mounting structures (148, 150) of different sizes and configurations. Hydraulic actuators (80, 82) within the housing (46, 54) on either side of the grapple are operated to open and close the jaws of the grapple. Adapter blocks (178, 180) are provided for mounting the ends of the linkage pins to the housings walls. A fastening arrangement for securing the adapter block enables the linkage pin to be mounted at different separation distances from the main pin to accommodate different types of pin mounting systems. A pin retention mechanism (310) prevents longitudinal and/or rotational movement of a mounting pin (318) and provides quick and easy removal. The pin retention mechanism comprises a housing (315) having an opening (317) in which an end of a mounting pin is located, and a removable member (316) which is inserted into the housing adjacent the end of the pin. The removable member may be provided with a protruding section (329) which extends through a groove (337) in the end of the pin for preventing rotation thereof.</p> |
