Rotary dismounting and mounting tool for tooth-shaped coupler

The invention discloses a tooth-shaped coupling rotating dismounting tool which comprises a supporting body, a first supporting rib and a second supporting rib connected with the first supporting rib. The dismounting assembly comprises an abutting disc arranged at the lower end of the second supporting rib, a matching strip arranged on the abutting disc and a plurality of bolt holes formed in the abutting disc; the rotating assembly comprises a rotating column arranged at the lower end of the second supporting rib, a clamping key arranged on the rotating column and a rotating hole formed in the second supporting rib, the rotating column is connected with the rotating column in a sliding mode, and when an operator selects the position, the abutting disc is pulled outwards firstly, the clamping key is separated from the clamping groove firstly, then the abutting disc is rotated, and the rotating column is connected with the rotating hole in a sliding mode. When the rotating disc rotates, the rotating disc drive