| 摘要 |
A gripper (1) for gripping a pipe (P) is presented, comprising gripping bodies (101) and holding devices (2), and dies (3), the dies being fastened to respective holding devices (2) and the holding devices being fastened to respective gripping bodies with respective connection arrangements (4). The connection arrangements (4) is adapted to be maneuvered so as to release the respective holding device (2) from an operation position so as for the holding device to assume a service position in which it is held by the respective gripping body. A die locking device (202) of a holding device (2) is adapted to be kept, by contact with the respective gripping body (101), in a locking position when holding device (2) is in the operation position. The locking device (202) is free to move to an open position when the holding device (2) is moved away from the operation position. The die (3) and a seat (203) for the die in the holding device (2) are provided a notch (303) and a protrusion (208), arranged so that, as the pipe contacting element is inserted into the seat in an insertion direction (B), the protrusion enters, in parallel with the insertion direction, into the notch. |
