A clamping device for screw lock is paid

The utility model discloses a clamping device for screw lock is paid, this clamping device include that base, inlayer press from both sides tight structure and outer and press from both sides tight structure, the inlayer presss from both sides tight structure and is used for cliping the periphery of screw, the inlayer presss from both sides tight structural connection and is in on the base, the tight structure of outer clamp is used for cliping the periphery of screw, outer press from both sides tight structure with the inlayer presss from both sides the coaxial setting of tight structure andthe cover is established the inlayer presss from both sides the periphery of tight structure, the outer bottom that presss from both sides tight structure is less than the inlayer presss from both sides the bottom of tight structure. The utility model discloses the screw can be improved and the stability of screw when paying is locked to the screw that reduces that can be fine pays the in -processappearance probability as