Tear hydraulic pressure fixture of screw rod machine open

The utility model discloses a tear hydraulic pressure fixture of screw rod machine open, including the master cylinder to reach a plurality of clamping jaws by main oil cylinder drive, the clamping jaw is provided with more than three or three, and the clamping jaw is that circumference align to grid distributes and towards the centre of a circle, main oil cylinder drive clamping jaw synchronization action carries out the centre gripping to the screw rod that is located centre of a circle position. The utility model discloses a hydraulic pressure fixture, through the clamping jaw more than three or three, the centre gripping is carried out to the screw rod that lies in the centre of a circle from a plurality of orientations simultaneously to concentric linkage, has guaranteed all directions and has executed equilibrium of forces, can not damage the screw rod when pressing from both sides tight screw rod. 本实用新型公开了拆螺杆机的液压夹持机构，包括主油缸，以及由主油缸驱动的若干夹爪，所述夹爪设置有三个或三个以上，夹爪呈圆周均匀排列分布且朝向圆心，所述主油缸驱动夹爪同步动作向位于圆心位置的螺杆进行夹持。本实用新型的