How to choose the tower crane? Main Principles for the Selection of Tower Hang
Tower crane is one of the necessary machinery for building construction. Because of its own characteristics and special working methods, it is very different from other construction machinery. How to choose the tower crane?
The main principle of choosing tower crane: different models are selected according to different construction structures and construction methods. The surrounding environment such as transportation roads, soil conditions, and underground structures also have a certain influence on the selection.
1. Determination of basic parameters
The basic parameters of the tower crane refer to the height, arm length, and maximum hanging weight of the arm(ie, the farthest end of the tower crane arm). Except for very special cases, the maximum lifting weight of the tower crane generally does not need to be considered.
According to the length, width and height of the building, the arm length of the tower can be initially determined. The arm length is appropriate to ensure that it can cover all projects and have a slight margin.
The tower cranes that are often seen at present are generally 30m, 40m, 50M, 55m, 60m, 70M, and several types. The tower cranes with larger arm lengths are rarely used by other conditions on the scene. Caution is required when selecting. The height of the tower is as long as it is 10 to 15M higher than the maximum Gaodu Gaochu of the building.
The weight of the arm end is determined by the weight of the object to be lifted by the civil construction workers. General frame structure type buildings, because the tower crane needs to be lifted concrete bucket, the weight of the arm is larger
Now the concrete structure of the high-rise buildings, this requirement is lower. After the above three parameters are determined, the type of tower crane can be initially determined.
2. Determination of installation modalities
The tower crane is a device used on the ground. Its own weight(1Ot ~ 200t) is much larger than the general construction machinery.
Therefore, the basic installation method of the tower crane is also one of the main issues that needs to be considered when selecting. At present, there are three basic installation methods for self-rising tower cranes: fixed feet in large concrete blocks, pressurized weights in large chassis, and walking installation methods.
