LD type electric single-girder cranes are designed and manufactured according to standard JB/T1306-1994, and CD Ⅰ, MD Ⅰ and other forms of supporting the use of electric hoist, running into a small light rail crane, its application from the weight of 1-16t, applicable span of 7.5-22.5 m and an operating ambient temperature -25 - +40 ℃ range. This product is a general-purpose crane, used machinery manufacturing, assembly, warehouse and other low frequency of use from weight lifting or fewer rated place. Bit: Short order cycle, cost-effective; Disadvantages: effective lifting height is relatively low, the use of shaking is relatively large, low-level work, do not apply heavy plant. The crane has a bottom, control rooms, remote control three kinds of forms, control room and face and the side door with two forms for users to choose to use.