The claw of arrest for utilities tubular

摘要

"Claw of the lock tube for utilities. The present invention relates to a device for arresting (push, hold, hold) (1) for utilities (tubular goods).In accordance with the present invention, the apparatus comprises two, with respect to one over the other, jaws (cheeks, mouth, brown) hinged (articulated) (1a)1b) and a working cylinder (8) which performs the movement of the jaws (1a, 1b) with respect to a stationary cabinet (2).A counter block (7) is prepared between the jaws (1a, 1b) in the cabinet (2), and each jaw is forced by the movement movivelmente prepared with respect to the counter block (7).The movement forced movable causes axial displacement for front and back simultaneously with the opening / closing of the jaws (1a, 1b).The working cylinder (8) is connected to each jaw (1a, 1b) through its geometrical axis articulated connection forming revolving the rotating jaws (1a, 1b).