A-type double girder gantry crane is a kind of widely used gantry crane, and it mainly consists of trolley, crane traveling mechanism, electric system, main beam, supporting legs, end beams, trolley traveling mechanism, lifting mechanism, cabin and so on. This kind of crane can be used for lifting and moving heavy loads in open storage, stock yard, railway lines, port, shipyard, construction site, manufacturing and processing factories etc. It can work reliably and efficiently to suit various work needs as it is supposed to be.
A-type door frame structure, on the top of it there is a saddle structure , reasonable force, and it is the most widely used double girder gantry crane. According to their structure, can be divided into boxes-MG, rated lifting weight is 5~320t and reduced wind resistance design of truss structure of MGH, rated capacity is 5~50T.