Simple electric hoist gantry crane is a crane

Simple electric hoist gantry crane is a crane, which has two kinds of single and double beam. Because of its simple structure, easy manufacture, light weight, low cost, easy installation and maintenance overhead gantry crane obtained the considerable development, widely used in industrial and mining enterprises, railways, docks, warehouses, material yard and other places. Because of electric hoist gantry crane structure is simple, however, in the design, production, installation, inspection process, such as failure to cause enough attention. In the electric hoist gantry crane in use process, if the defect of leg connections, such as fracture hidden danger of overturning bridge gantry crane occur. As a result, the examination link, pay attention to the electric hoist gantry crane leg installation quality inspection, is to ensure production safety, prevention of the accident is an important guarantee. Example: in 2010, the zhuhai YiMenShi inside some temporary steel structure workshop crane accident, at that time, the operators are preparing to lifting items, items in lifting has left the ground, the crane suddenly overall tilt to one side leg, fortunately, at that time the next workshop are not present in more than 20 workers, no casualties at the scene. Accident analysis accident lifting main parameter table 1 accident hoisting main parameter table type MH16-22 A5 rated lifting weight 16 t lifting speed 8 m/min lifting height of 6 m span 22 m working-level A5 cart speed 20 m/min.