Roof hang device and crane and cargo boom disassembling method

Abstract

The invention discloses a roof hang device and a crane and cargo boom disassembling method In order to better fix the roof hang device, a basic steel beam on a roof hang base is fixed through a fastening bolt penetrating through a beam plate of a roof, the basic steel beam and the beam plate are clamped and fixed by arranging parallel pressing plates so that the stability of a roof hang bearing gravity can be lowered, the roof hang can move more stably, a ground pulley is installed at the position where a tower crane and a roof make contact and intersect with each other by means of the roof hang device, the cargo boom can be kept balanced by enabling a lifting steel wire rope installed on the tower crane to penetrate through the ground pulley and the cargo boom, the cargo boom is stably and rapidly disassembled under the traction of a hanging hook on the roof hang, the method is particularly suitable for disassembling a superlong cargo boom, after the cargo boom is disassembled, a balance arm on the tower crane, a counter weight, a tower cap, a rotation assembly, a jacking wrap frame assembly and a standard knot are sequentially disassembled by means of the roof hang device, the disassembling process is simple and disassembling is stable.

Description

technical field [0001] The invention relates to the technical field of tower cranes, in particular to a roof crane device and a method for disassembling a crane and a boom. Background technique [0002] With the rapid development of modern construction, there are more and more super high-rise buildings, the height of the whole building can reach 600 meters, and the building floor area is relatively small. The tower cranes (referred to as tower cranes) used in the construction of super high-rise buildings are generally of the internal climbing type. The installation of internal climbing tower cranes must be fixed and raised between buildings or core tubes. After the tower crane completes the construction task, the internal climbing tower crane must be disassembled to the ground. Now, the tower crane is disassembled by installing a roof crane (roof crane for short) on the top structural column or beam of the building. When dismantling the tower crane, sometimes due to the li...

AI Technical Summary

Problems solved by technology

When the tower crane is disassembled, sometimes due to the limitation of the roof site conditions, the roof crane cannot directly lift the center point of the boom of the tower crane. Afterwards, the center of gravity of the front end is downward, and the rear end of the boom is tilted upward, and the roof crane cannot be disassembled normally.

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