Labor-saving quick locking bench vice

The utility model discloses a labor-saving quick locking bench vice. The device comprises a dismounting structure, a rotating structure, a bottom plate and a damping structure, a rotating structure isarranged in the middle of the bottom end of the bottom plate; a dismounting structure is arranged at the bottom end of the rotating structure; a base is arranged at the bottom end of the dismountingstructure; sliding grooves are formed in one sides of the two ends of the outer wall of the bottom plate. A sliding block is arranged in the sliding groove. Wherein a threaded groove is formed in oneside of the top end of the bottom plate, a screw rod is arranged in the threaded groove, a handle is arranged on one side of the screw rod, a fixed caliper is arranged on one side of the threaded groove, a movable caliper is arranged on the other side of the top end of the bottom plate, and a damping structure is arranged on one side of the top end of the movable caliper. Due to the fact that thesprings are installed in the