Steel pipe pole joint closing device

The invention relates to the technical field of steel pipe pole joint closing devices, and discloses a steel pipe pole joint closing device which comprises a wrapping plate, a mounting box is fixedly connected to the top of the wrapping plate, a pulling rope is slidably connected to the inner wall of the mounting box, and a clamping mechanism is arranged at the end, away from the mounting box, of the pulling rope. One end of the pressure ring is fixedly connected with the right side of the inner wall of the clamping block, the bottom of the inner wall of the pressure ring is fixedly connected with a knocking disc, the top of the clamping block is fixedly connected with a fixing block, the bottom of the inner wall of the fixing block is fixedly connected with an air pressure ring, and the end, away from the inner wall of the fixing block, of the air pressure ring is fixedly connected with a clamping plate. The clamping assembly is arranged, meanwhile, air pressure can flow into the fixing block in a pressure r