L68B2 Mast SectionWhat are the characteristics and advantages of internal climbing tower crane?
After years of development, tower crane has derived a lot of varieties. According to the design form, it can be divided into self elevating tower crane, internal climbing tower crane, flat head tower crane, boom tower crane, fast loading tower crane and so on. Among them, the internal climbing tower crane is often used in the construction of high-rise buildings.
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Generally speaking, the internal climbing tower crane has the advantages of large effective construction capacity, low manufacturing cost, low use cost, high safety and small floor area of the tower crane component material warehouse. In the current standard classification of China, the model standard of the tower crane is QT, in which "Q" represents "crane", "t" represents "tower", and because the internal climbing tower crane slewing mechanism In the upper part, so in the numbering, this type of tower crane is also classified as "QTZ" - that is, it is classified as "up slewing jack up" tower crane.
Different from the common attached tower crane, the internal climbing tower crane is installed inside the building (elevator shaft or stairwell and other special bays). The construction surface is full circle. This is particularly important in urban construction with high building density. Because the horizontal tower crane boom across the block, it is easy to collide with buildings, power lines, water pipes, etc., resulting in accidents and danger.
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In addition, the internal climbing tower crane is also known as "climbing tower crane". Therefore, this type of crane produced by some manufacturers is also independently classified into one category, and the prefix of "QTP" is given in the code. And the number code of internal climbing tower crane is still consistent with the standard of other models. For example, qtp40 (4908) refers to a climbing tower crane with a nominal lifting moment of 400kN · m, a 49m arm length and a lifting (end lifting) weight of 0,8t at the 49m position of the boom. Among them, 40 refers to 40 moment units, one unit corresponds to 10kN · m, 49 in brackets refers to the arm length, and 08 refers to 0.8t.
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