How to remove the tower crane attachment device

Abstract

The invention provides a disassembling method for tower crane attaching devices. The disassembling method comprises the following steps of previously installing a derrick mask on a tower crane or using a tower crane provided with a derrick mask, controlling a main derrick mast to move to be right above a member to be disassembled, temporarily fixing the member to be disassembled with a lifting hook of the main derrick mast suspension and then disassembling the member to be disassembled, controlling the main derrick mast where the disassembled member is lifted to move to be above a lowering area, lowering the disassembled attaching device and repeating the steps 2-4 to continuously disassemble other attaching devices to be disassembled. According to the disassembling method for the tower crane attaching devices, the derrick mast which can be arranged on a crane wrap frame is utilized, and attaching devices can be safely, efficiently and conveniently disassembled when high-altitude attaching device disassembling operation is needed.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a method for removing an attachment device of a tower crane. Background technique [0002] In road construction and bridge construction, especially in the construction of cable-stayed bridges, suspension bridges and high piers, tower cranes are often used for hoisting construction. After the construction is completed, there are often difficulties in removing the attachment of the tower crane due to the lack of lifting equipment to help remove the attachment device of the tower crane in the later stage. [0003] Especially during the construction of the cable towers of cable-stayed bridges, the boom cannot be rotated at a large angle due to the influence of the cables, and it is difficult to complete the self-removal of the attachment device. Therefore, external lifting equipment (such as a hoist, etc.) is usually required for removal. The hoist needs to be fixed on the top o...

AI Technical Summary

Problems solved by technology

The hoist needs to be fixed on the top of the cable tower and the bridge deck, with many anchor points, low efficiency, poor safety, and it is difficult to disassemble the hoist later.

And in the process of removing the attachment with the help of external lifting equipment, the road needs to be closed to avoid accidents and affect vehicle traffic

[0004] Therefore, the removal work of the current tower crane attachment device is difficult, the cost is high, the efficacy is low, the operation is cumbersome and the safety is poor

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