290HC Mast Section How to determine the location of the Tower Crane? What problems should be paid attention to when hoisting?
how to determine the location of the tower crane? What problems should be paid attention to when hoisting? When the Tower Crane installs large components, the position of the lifting point must be determined reasonably. If the lifting point is not marked in the application specification, two aspects should be paid attention to: 1. Balance of the lifting construction. For long structural parts, such as crane arm and balance arm, the proper lifting point can be determined by ground test. 2. Structural strength at the lifting point and fixing of the sling connection. If the hanging point strength is not enough, will destroy the structural components, the individual eye, the situation will cause all structural components damage.
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Slings shall not slip or fall off at the lifting point. Individual slings shall be connected to the joints of the structure to be lifted and shall not be connected to the middle of the main chord and the web. A spacer shall be provided between the sling and the edges and corners of the object. In addition, the tower crane hoisting should pay attention to the question: the Tower Crane Different Section Standard Section: Some Tower Crane's tower body standard section according to the member's strength difference divides two or two above specifications, different specifications of the size of the section shape is simply the same, but the main chord wall thickness is different, in the appearance is not easy to distinguish. After the height of the tower crane is determined, the box of the installation should be marked according to the requirements of the explanation book, and the detailed model identification of the standard section on the tower body must not be mixed.
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