Instructions of the Metal Features and Structures of the Hoisting Machinery






 
 
The mental structures of hoisting machinery are made from steel shapes (including beams, channels, angles and tees) and steel panels. They are connected with one another in order with the method of welding, riveting as well as the bolt connection. They can not only bear the self-weight of the hoisting machinery, but also can bear the weight of loads. The weight of the metal structure takes up 40%-70% of that of the whole machine, even 90% for the heavy duty crane; the cost of those structures count more than 30% of that of the whole machine.

In according to the structure, the metal structure consists of solid web (made of steel panels, also called box structure ) and lattice form(usually made of shape steel, the common ones including pipe racking and lattice column ). The two structures are the basic stress-bearing parts of the hoisting crane. The main force support parts include the column, girder and arm support, each of which cooperates with another to form a crane with different functions. The working features of the mental crane are complex stress-bearing, heavy self-weight, material-consuming and mobile.

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