The lifting gourd is a light and small crane device, which is installed on the gourd single beam, bridge crane, door crane, and cantilever cranes. Raiders are one of the commonly used lifting equipment such as factories, mines, ports, warehouses, cargo farms, and shops. It is an essential machine for improving labor efficiency and improving labor conditions.

"Two not to fall" is not on the traffic channel;

"Ten" steel wire ropes are not qualified or hanging; the piano is unreasonable or the objects are tied up and do not hang; there are people or other floating objects on the suspension; The command signal is unknown or the command does not hang; the equipment accidents and the safety device are poor or unlighed; the object deviates from the running track and the sliding crane; There is no cushioning buffer and not hanging; when it is liquid, it is full.