Welding equipment comprises an installing base frame, a rotary shaft rotationally installed in the installing base frame through a bearing, and a safety belt barrel fixedly installed on the rotary shaft, wherein a driving gear is fixedly installed at the left end of the rotary shaft; a reverse rotation limiting device is installed at the right end of the installing base frame and comprises a right connecting frame fixedly installed on the right end surface of the installing base frame; a sliding groove with the open end facing the rotary shaft is formed in the right connecting frame and internally provided with a sliding block in a sliding mode; a magnet bar is fixedly installed in the right end surface of the sliding block; an iron bar is fixedly installed in the right end wall of the sliding groove; an inductor is fixedly installed on the outer circle of the iron bar; a transverse beam rod is fixedly installed on the upper side of the installing base frame; a right reinforcement rod is fixedly installed on the right side of the transverse beam rod and used for reinforcing the right connecting frame; and a reverse rotation sensing device is installed at the left end of the installing base frame.