Postoperative rehabilitation physiotherapy robot

The postoperative rehabilitation physiotherapy robot comprises two main supporting frames which are vertically arranged in parallel, each main supporting frame comprises an upper supporting frame and a lower supporting frame, a cushion is rotationally arranged between the two upper supporting frames, a supporting device is arranged below the cushion, and the two upper supporting frames are driven by synchronous lifting devices to move up and down; the synchronous lifting device comprises a rack long shaft, two gear sets, a first electric push rod and a lifting column; leg training assemblies are arranged on the two sides of the cushion, each leg training assembly comprises a longitudinal armrest, a thigh swing arm, a shank swing arm and a pedal, one end of each thigh swing arm is rotationally connected with the corresponding longitudinal armrest, and the other end of each thigh swing arm is rotationally connected with the corresponding shank swing arm. The supporting device is used for being matched with the