Each lifting cycle must be completed by multiple people, and no matter which link goes wrong, accidents may occur.
The reason for the large range of working space: the huge metal structure of the truck across the workshop or working site, high on other equipment, facilities and construction crowd, lifting materials on the truck, can realize the case of load, the truck crane part or the whole move in a large range of operation, while increasing the working area, but also increase the scope of influence of the danger.
The reason of multi-dimensional mechanism motion is that the hazard points of the crane are many and scattered. Different from other fixed machinery, the crane needs to move as a whole during the operation, and the lifting and handling process is realized by the combined movement of multiple mechanisms. Each mechanism has a large number of movable parts with complex structure, different shapes, different movements and variable speeds, coupled with the migration of the three-dimensional space of the suspended load, which forms the characteristics of multiple and scattered danger points of the crane machinery.
Reasons for group operation: Crane operation is the work of many links such as crane driver and ground command. The process of truck crane operation is to bind the crane, hook and unload through the ground rope, and the truck crane driver controls the crane to lift the material, and places the crane in the designated position according to the requirements of the ground command through space operation. Each lifting cycle must be completed by multiple people, and no matter which link goes wrong, accidents may occur.
