In recent years, the global investment in the environmental protection of the new energy industry has increased, especially the wind power industry has made great progress. Wind power equipment has the characteristics of self-heavy and large volume. It needs heavy-duty cranes, and the lifting operation is stable and reliable. According to the actual lifting needs of the site, it can provide single-machine, multi-machine synchronous lifting and hanging, overturning procedures, and lifting with various special spreaders use