The electric single beam suspension crane consists of a main beam, end beam, electric hoist, and electric racing car welded from steel plates and I-beams. It is suspended on the I-beam track at the upper part of the factory building, with a cantilever length of 0.5-1m. The electric hoist runs along the lower flange of the main beam I-beam to complete the lifting work of items. It has the characteristics of lightweight structure, easy installation and maintenance, and is widely used in production workshops, warehouses, and freight yards. The job level is A3-A5.