Wellhead self-locking cable lifting device

The utility model discloses wellhead self-locking cable lifting device equipment which comprises an extrusion pipe and a locking plate body movably connected in the extrusion pipe, the top of the locking plate body is fixedly connected with a connecting block, the connecting block and the locking plate body are integrally formed and manufactured, a bolt is arranged on the left side of the connecting block, and a nut is arranged on the right side of the bolt. And the right end of the bolt penetrates through the connecting block and extends to the right side of the connecting block, the surface of the bolt is in threaded connection with a nut located on the right side of the connecting block, the surface of the bolt is sleeved with a damping sleeve, and the damping sleeve is slidably connected into the connecting block. According to the self-locking cable lifting device, the two locking plate bodies are pushed to slide on the surface of the bolt, and one end of the steel cable is located between the two locking