Bridge crane widely used in indoor and outdoor warehouses, factories, docks and outdoor storage yard, etc.. Bridge crane bridge crane can be divided into ordinary, simple beam bridge crane and metallurgical three special bridge crane.
   General by the general bridge crane lifting trolley, bridge run institutions, the structure of the composition of the metal bridge. Car lifting and lifting by the agencies, institutions and small car running frame is composed of three parts.
   Lifting bodies, including the motor, brake, reducer, drum and pulley blocks. Motor through reducer, driven rotating drum so that the wire rope around the drum or from the reel down to take-off and landing weights. Small frame is a child care support and installation of lifting mechanism and operation of institutions such as car chassis components, usually welded structure.
     The carts run organizations to adopt the design-driven, respectively, that is active on both sides of the wheels with a motor driver.