LH model double beam overhead crane with electric hoist, with compact exterior dimension, low construction headroom, light deadweight, light wheel load advantages. Applied in mechanical processing workshop, metallurgical factory and subsidiary workshop, warehouse, material yard, power plant for transferring, assembly, inspection maintenance and load unload procedures. It can also replace common double girder overhead crane, used in light textile industry and food industry manufacturing workshop. It work type is light and middle grade. Working environment temperature is -25 to 40℃ forbidden to use in flammable, explosive and corrosive environment. The capacity of 5 tons to 32 tons, The span is 7.5-22.5m, and working grade is A5.