Gantry crane in the work should abide by the basic principles

(1) Lifting machinery such as Overhead crane, Gantry Crane,  usually has a large metal structure and a more complex mechanism, which can complete a lifting and falling movement. One or several horizontal movements. In the process of operation, several different directions are often operated at the same time, and the technical difficulty is greater.
(2) the lifting of a variety of objects, the load is changing, the weight reached hundreds of thousands of tons; The length is dozens of meters or more than 100 meters, the shape is very irregular, and there are loose particles, hot melting state, flammable and explosive dangerous goods, making the lifting process complex and dangerous.
(3) Most lifting machinery needs to operate in a large range, some need to install rail and wheels, tires or tracks, and some need to walk on the wire rope (such as aerial ropeway), the activity space is larger, the danger surface is also increased.
(4) There are more exposed and active parts, and they are often in direct contact with lifting operators (such as hooks, wire ropes, etc.). Many accidental risk factors are latent.
(5) Complex operating environment. Ding mining enterprises, docks, construction sites, transportation, tourism and other places, there are lifting machinery in operation. Workplaces also often encounter high temperature, high pressure, flammable, explosive, transmission lines, strong magnetic fields and other risk factors, which will pose a threat to equipment and personnel.
(6) It is often difficult to cooperate with many people in the operation. It is required that the operators such as driving, commanding and cable are skilled in matching the platform, coordinating work and taking care of each other. Operators should have the ability to deal with on-site emergencies.
(7) Elevators, elevators, ropeways and other direct transport personnel in the guide rail, platform, steel wire rope to do lifting, displacement movement, there are many accidental risk factors.