The electric hoist semi gantry crane is a small and medium-sized lifting equipment that operates on rails. It mainly consists of a gantry (main beam, support legs, lower crossbeam, etc.), a lifting mechanism, a running mechanism, and an electrical control part. The electric hoist serves as the lifting mechanism and runs along the lower flange of the main beam I-beam during operation. On one side of the gantry, there are support legs that run along the ground track, while on the other side, there are no support legs that run along the upper track of the factory building. The rest of the structure and configuration are consistent with the MH electric hoist gantry crane.