Motor coupling taking-out device

The utility model relates to a motor coupling taking-out device which comprises a base coaxial with a coupling, a hydraulic cylinder which extends towards the coupling and is coaxial with the axis of the base is arranged on the base, two long holes which are located on the two sides of the hydraulic cylinder and are symmetrically arranged relative to the hydraulic cylinder are formed in the base, and the two long holes extend in the radial direction. A first screw extending along the axis of the base is arranged in the long hole, one end of the first screw is in threaded connection with a nut, the other end of the first screw is fixedly connected with a fixing block, and the length of the fixing block is larger than that of the long hole. Through the arrangement of the long hole and the fixed seat, the distance between the two first screw rods can be adjusted, so that different types of backrest wheels can be taken out; and through the arrangement of a rotating rod and a second screw rod, the distance between