Crank pin bushing replacer of beam-pumping unit

The utility model discloses a crank pin bushing replacer of a beam-pumping unit, which comprises a handle (1), a screw (2), a thread sleeve (3), a support cylinder (4), a stopper (6), a bearing (7) and a stop nut (8). The crank pin bushing replacer is characterized in that the support cylinder (4) is cylindrical, the left end of the support cylinder is provided with an annular flange (5), the middle of the support cylinder is provided with symmetrical rectangular lightening holes (A), the center of the right end of the support cylinder is provided with the thread sleeve (3), the left end of the screw (2) is provided with the stop nut (8), the bearing (7) and the stopper (6) with an annular lug boss are sequentially provided, the screw (2) is matched and penetrated with the thread sleeve (3), and the handle (1) is arranged on the left end of the screw (2). The crank pin bushing replacer has the advantages of being simple in structure, safe in operation, and short in halt time, saving time and labor, increasing