| 摘要 |
The arm is of the angle type and a holder (7) for the earthworking tool (8) is so fastened to the outer end of one leg (6) of the arm that it can be rotated around the longitudinal axis of the leg. The leg has a rotating shaft passing through it, one end of which is connected to the tool holder. Between the other end of the rotating shaft and the second leg (5) of the angle arm is coupled a hydraulic cylinder unit (17) which permits remote control of the earthworking tool (8) angle relatively to the angle arm. |
