Large standard knot attachment frame and square installation method

By designing an integrated installation method and a bidirectional wedge-tightening device for large standard section attachment frames, the problems of complex installation and uneven stress in the prior art are solved, and a more efficient and safe installation process is achieved.

CN119706641APending Publication Date: 2025-03-28XUZHOU CONSTR MACHINERY
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Patent Information

Application Number
CN202411900436.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

When installing large tower crane attachment frames, the number of lifting times and complex installations are installed, especially difficult to operate in high altitudes, and the design of the wedge tightening device for holding the hoop is unreasonable, which can easily lead to uneven force under the main string.

Method used

A large standard section attachment frame is designed, and the attachment half frame and clamping hoop is integrated, and a pin bracket is installed on the clamping hoop is simplified. A bidirectional wedge tightening device is installed on the clamping hoop to ensure the reliable connection between the main string and the clamping hoop.

Benefits of technology

The number of lifting times of the attachment frame is reduced, the installation efficiency and safety is improved, the main string and the attachment frame are uniformly subjected to, and the installation problems caused by manufacturing errors are avoided.

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Abstract

The invention belongs to the technical field of tower crane attachment frames, and particularly relates to a large standard knot attachment frame and a square installation method.The attachment frame comprises a left half frame, a right half frame, hoops and connecting beams, the two ends of the left half frame and the two ends of the right half frame are connected into the complete attachment frame through the connecting beams, the hoops are hinged to the corners of the half frames, and the hoops and the half frames form an integrated structure; and brackets for fixing the pin shafts are arranged on the left half frame and the right half frame. The mounting method comprises the following steps: sequentially hoisting the left and right half frames on the standard knot main chord; hoisting connecting beams at two ends of the left and right half frames; and the opening end of the hoop is hinged with the left half frame and the right half frame through a pin shaft and is tightly held on the standard knot main chord. The attachment half frames and the hoops are integrally installed, meanwhile, the pin shaft brackets are arranged on the attachment frames, the hoops and the pin shafts can be hoisted along with the attachment frames at the same time, the hoisting frequency is greatly reduced, and the installation efficiency of the attachment frames is improved. Meanwhile, a wedge-caulking device is arranged on the hoop, so that the situation that the main chord and the hoop cannot be tightly wedged due to manufacturing errors, and the use safety is affected is avoided.
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