| 摘要 |
The clamp for earth drills has a clamping frame (1) with a gripper assembly (2,8,10,12,18,22) to hold one side of the drill coupling. The clamping frame has a tool holder (7) mounted on a movable arm (3), to support a pair of releasable pipe clamping pliers. Claims include a method fro working on the drill
|
