Large luffing jib tower crane hook multiplying power switching assembly

By designing a hook ratio switching component including connecting plate components and limiting parts, the problem of low hook ratio switching efficiency of large boom tower cranes is solved, and the hook ratio is efficiently switched without disassembling the wire rope, which improves construction efficiency and tower crane lifting performance.

CN119683453APending Publication Date: 2025-03-25GUANGXI CONSTR ENG GROUP CONSTR MACHINERY MFG
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Patent Information

Application Number
CN202411852146.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

During the construction process of existing large boom tower cranes, due to the need to disassemble and rewind the wire rope, the hook rate switching efficiency is low, which affects the construction progress and tower crane lifting performance.

Method used

A hook ratio switching component including a boom, a wire rope, a connecting plate assembly, a hook assembly and a switching pin is designed. Through the removable connecting plate and a limiting member, the hook ratio switching is realized without disassembling the wire rope.

Benefits of technology

The simplicity and efficiency of the multiplier switching of the boom tower crane hook is realized, which greatly reduces the switching process, improves the switching efficiency, and fully utilizes the tower crane lifting performance without affecting the construction progress.

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Abstract

The invention discloses a large luffing jib tower crane hook multiplying power switching assembly, which comprises a jib, a steel wire rope, a connecting plate assembly, a hook assembly and a switching pin shaft, one end of the jib is rotatably connected with a rope outlet pulley, the steel wire rope is in contact with the rope outlet pulley, one end of the connecting plate assembly is connected with the jib, and the other end of the connecting plate assembly is connected with the steel wire rope; the lifting hook assembly comprises an outer hook, an inner hook and a hook head, the outer hook is provided with a one-multiplying-power fixing hole, a two-multiplying-power fixing hole, a one-multiplying-power limiting piece and a two-multiplying-power limiting piece, the hook head is connected with the outer hook, and the switching pin shaft is connected to the outer hook and used for being matched with the one-multiplying-power fixing hole or the two-multiplying-power fixing hole so as to limit the inner hook. On the premise that the steel wire rope is not disassembled and wound again, the one-to-two-multiplying-power rope penetrating mode of the lifting hook of the movable arm tower crane is switched back and forth, the switching operation is simple and convenient, the switching procedures are greatly reduced, the switching efficiency is improved, and the project construction progress is not influenced while the hoisting performance of the movable arm tower crane is fully exerted.
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