Through practice and research. it is confirmed that the working life of fixed crane. port crane. wharf crane and other crane equipment is related to their metal structure. and their working life mainly depends on the working life of their metal structure without damage.

This is because the metal structure. as the framework of the whole fixed crane. is also a part of the foundation. It not only carries the weight of the crane itself and the weight of the lifted objects. but also constructs the main space of the crane operation. Except for the metal structure. any part of the crane can be scrapped and replaced in case of failure or damage. The crane shall be scrapped only when the main load-bearing members of the metal structure lose stability or deform beyond the standard and cannot be repaired. So the working life of the crane depends on the metal structure.

Because the metal structure of the fixed crane bears its own weight and the weight of the lifted objects. the damage of the metal structure may not only lead to casualties. but also means the scrapping of the whole crane. in addition. it will affect the safety of other buildings. equipment or facilities within its scope.

In the process of using the fixed crane. we should not only control the load and working speed of the lifting. but also prevent the damage of the natural force to it. Only in this way can we avoid the damage of the metal structure. ensure the long service life of the whole crane. the safety of the user and the working efficiency.

Fixed crane is a kind of multi action hoisting machinery which can lift and carry heavy objects horizontally within a certain range. Also known as crane. It belongs to material handling machinery. Its working characteristic is to do intermittent movement. that is to say. the corresponding mechanism of picking. moving. unloading and other actions in a working cycle works alternately. The development and use of crane in the market are more and more extensive.