Heat dissipation device of joint mechanical arm

The heat dissipation device of the joint mechanical arm comprises a connecting strip, one end of the connecting strip is fixedly connected with a lower mechanical arm fixing ring, the interior of the lower mechanical arm fixing ring is rotationally connected with an adjusting threaded rod through threads, one end of the adjusting threaded rod is fixedly connected with a clamping frame, and the other end of the adjusting threaded rod is fixedly connected with a connecting rod. The end, penetrating through the lower mechanical arm fixing ring, of the adjusting threaded rod is fixedly connected with a rotating block, a tool groove is formed in the rotating block, the side face of the connecting strip is fixedly connected with a fixing base, the interior of the fixing base is rotationally connected with a rotating frame through a rotating shaft, and one end of the rotating frame is fixedly connected with an upper mechanical arm fixing ring. Through the lower mechanical arm fixing ring, the adjusting threaded rod,