Improved power slips structure of sucker rod

The utility model discloses an improved power slips structure of a sucker rod. The improved power slips structure comprises a shell, a piston is arranged at one end of the shell and provided with a locking shaft, an oil cylinder is fixed to the other end of the shell through oil cylinder connecting bolts, a cylinder head is arranged at the top of the oil cylinder, a side door is fixed to the shell through side door bolts, and a phi 16-25 reducing slips is arranged on the shell and connected to the outer side of the piston in a sleeving mode; a positioning sleeve is fixed at the bottom of the piston, the outer side of the positioning sleeve makes close contact with the inner wall of the shell through a first rubber layer, an arc spring piece is arranged in the positioning sleeve, the top of the arc spring piece is fixed to the piston, the bottom of the arc spring piece is connected to the bottom of the shell through a second rubber layer, spring bodies are arranged in the second rubber layer, and a third rubber layer is arranged at the outer side of the arc spring piece. The defects in the prior art can be overcome, and the buffering effect on loads and impact by the whole slips structure is improved.