The invention discloses a main pulley rope falling prevention device for a variable-amplitude trolley of a tower crane. The main pulley rope falling prevention device comprises an upper rope blocking device, a lateral rope blocking device and rope falling prevention assemblies. The upper rope blocking device is fixed on the variable-amplitude trolley and stretches over a pulley, and a certain distance is reserved between the upper rope blocking device and the highest position of the pulley, wherein the distance is smaller than the diameter of a steel wire rope wound on the pulley. The lateral rope blocking device is fixed to the variable-amplitude trolley and stretches across the position where the steel wire rope is cut into the pulley, a gap is formed between the lateral rope blocking device and the pulley and is smaller than the diameter of the steel wire rope, and the rope falling prevention assemblies are arranged along the edge curve of the lower half portion of the pulley. The rope falling prevention assemblies are arranged on the two sides of the pulley, the two ends of the rope falling prevention assemblies are fixed to the variable-amplitude trolley, and gaps are formed between the rope-falling-preventing assemblies and the pulley. The device is mainly used for protecting the steel wire rope above and on the side face of the pulley, so that normal use of the tower crane under the actual complex working condition is guaranteed.

    本发明公开了一种塔机变幅小车主滑轮防脱绳装置,包括上挡绳装置、侧向挡绳装置和防脱绳组件,所述上挡绳装置固定在变幅小车上且横跨在滑轮正上方,该上挡绳装置和滑轮的最高处之间隔有一定距离,该距离小于缠绕在滑轮上的钢丝绳的直径,所述侧向挡绳装置固定在变幅小车上且横跨在钢丝绳切入轮滑的位置,该侧向挡绳装置和滑轮之间设有间隙且该间隙小于钢丝绳的直径,所述防脱绳组件沿着滑轮下半部的边沿曲线设置,该防脱绳组件设置在滑轮两侧且两端固定在变幅小车上,且防脱绳组件与滑轮之间形成间隙。本发明的装置主要针对滑轮上方和侧面对钢丝绳进行防护,以保证塔机在实际复杂工况下的正常使用。


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    Title :

    Main pulley rope falling prevention device for variable-amplitude trolley of tower crane


    Additional title:

    一种塔机变幅小车主滑轮防脱绳装置


    Contributors:
    MO RUOWEI (author) / CHEN CE (author) / WU FANYAN (author) / HUANG JIAZHAN (author) / GAN YIJIE (author) / QIN DEGUANG (author) / CHEN WEI (author) / ZHU YUANJUN (author) / CHEN XINGHAI (author) / YANG GUANGHUA (author)

    Publication date :

    2021-06-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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