LHT type electric hoist double girder crane use fixed electric hoist as lifting mechanism. The car wearing USES steel welding, the main girder half partial rail box beam, and the main girder beams with high strength bolt connection, and the big car operation organization adopt "" device drivers, car cable a conductive potential new crane. The weight of 5 ~ 32 tons, span of 10.5 ~ 22.5 meters, work for the A5 level. The product is suitable for use in machinery manufacturing, assembling, warehouse etc, loading and unloading and transporting. The product's features are: Structure compact, lightweight, building highly low, spare parts high interchangeability, versatility, reliable performance, installation convenient usage and maintenance. This product lifting and big car running all have single speed to choose from, control ground controlling and room control portion control two kinds, the ground control points cable control and wireless remote control two kinds, control room separate type and closed two types, the control room entrance direction at the left, left, points right side, four on the right