| 摘要 |
To adjust a hydraulically actuated stone grab (1) to stone packets of different dimensions, locking pins (13) have to be operated by auxiliary cylinders (12). To operate the auxiliary cylinders (12), a switching mechanism, comprising cam operated valves (5,6), is installed in the grab impression to that the hydraulic fluid is sent to the auxiliary cylinders (12) or to the hydraulic clamping cylinder (9). <IMAGE>
|
