Use steady safety tongs of lift

The utility model provides an use steady safety tongs of lift, two system guide blocks that the symmetry set up in the U -shaped spring that sets up in pincers seats, the pincers seat, U -shaped spring and respectively make the tight piece of a clamp of connecting respectively the guide block inboard, be connected with pulling mechanism on pressing from both sides tight, pressing from both sides tight piece and providing inward packing force through the U -shaped spring, its characteristics are: the top of system guide block is provided with resistance balance mechanism. The utility model discloses owing to has adopted to be provided with in the upper end of system guide block and be used for and clamp the roller bearing that the seat contacted, make through the roller bearing and contactfor the cambered surface between system guide block and the pincers seat, so as to releases the inhomogeneous resistance that presss from both sides tight piece transmission and come effectively, evenit also can adjust to bal