Maintenance lifting platform of pumping unit

The utility model relates to a maintenance lifting platform of a pumping unit. The maintenance lifting platform comprises a platform body, a supporting frame, a lifting bolt set, a sliding plate, a ball, a horizontal adjustment bolt set and a land sliding vehicle, the ball is placed on the land sliding vehicle, the sliding plate is placed on the ball, the left end of the supporting frame is in hinged type connection with the left end of the sliding plate, the right end of the platform body is in hinged type connection with the right end of the supporting frame, the lifting bolt set is installed on the left side of the supporting frame, the lower end of the lifting bolt set abuts against the sliding plate, the horizontal adjustment bolt set is installed on the right side of the supporting frame, the upper end of the lifting bolt set abuts against the platform body, the lifting bolt set is rotated to ascend or descend the platform body to be capable of enabling the platform body to reach the required height, th