LD electric single girder crane is LD on the basis of an improved design, than the LDtype with reasonable structure, machine rigidity, the whole with CD1, MD1, HC model electric hoist as a complete, is a small light from the lifting machinery, heavy machinery, type rated rated lifting weight is typically 1-20t, span 7.5-22.5m, working-level A3-A5, working environment temperture of-25 to 40 degrees. The products are widely used for different occasions, such as factories, warehouses, material lifting goods, flammable, explosive, corrosive media environment is prohibited.