Rapid pull-out device for crank of oil pumping unit

The utility model discloses a rapid pull-out device for a crank of an oil pumping unit. The rapid pull-out device consists of a soleplate, a jack, a jack fixed bracket, fixed bracket nuts, hooks, hook nuts, a steel wire rope ring, a crank key bolt and a crank key bolt baffle plate. The jack fixed bracket penetrates through the soleplate, the jack is fixed on the soleplate by utilizing the fixed bracket nuts, and a handle is arranged on the top of the jack fixed bracket; one end of each hook is a curved hook, the other end of each hook is provided with threads, and one end, which is provided with the threads, of each hook penetrates through a hole in the soleplate to be fixed by the corresponding hook nut; two ends of the steel wire rope ring are suspended on the hooks; the length of the crank key bolt baffle plate is greater than the width of a crank key slot, a fixed hole is formed in the crank key bolt baffle plate, the crank key bolt can penetrate through the fixed hole to be connected into a screw hole in the end part of the crank key. By adopting the rapid pull-out device, the crank of the oil pumping unit can be stably and safely dismounted, the labor intensity of workers can be alleviated, the production efficiency can be improved, and the personal safety of workers and the equipment safety can be adequately guaranteed.