The invention belongs to the technical field of tower cranes, and particularly relates to a tower crane and a lifting hook device thereof, the lifting hook device comprises an upper pulley assembly and a lower pulley assembly, the upper pulley assembly is provided with a hanging assembly capable of being unfolded or folded, and the lower pulley assembly is provided with a lifting hook and an adjusting part; when the two-multiplying-power mode needs to be used, the lower pulley assembly and the upper pulley assembly are separated, the lower pulley assembly is independently used for operation, and at the moment, the hanging assembly is in an unfolded state; when the four-multiplying-power mode needs to be used, the lower pulley block and the upper pulley block are connected, the upper pulley assembly and the lower pulley assembly are used at the same time for operation, and at the moment, the hanging assembly is in a folded state. According to the lifting hook device, the hanging assembly is switched from the folded state to the unfolded state through the adjusting part, and the unfolded state is kept until the lower pulley assembly is separated from the upper pulley assembly, so that switching from a four-multiplying-power mode to a two-multiplying-power mode is realized, and the multiplying-power replacement does not need to be manually carried out so as to accelerate the speed of replacing the multiplying power of the lifting hook device.

    本申请属于塔式起重机的技术领域,具体地涉及一种塔式起重机及其吊钩装置,吊钩装置包括上滑轮组件和下滑轮组件,其中,上滑轮组件上设有可展开或收拢的挂装组件,下滑轮组件设有吊钩和调节件,当需要使用二倍率模式时将下滑轮组件和上滑轮组件分离,并单独使用下滑轮组件作业,此时挂装组件处于展开状态;当需要使用四倍率模式时将下滑轮组与上滑轮组连接,并同时使用上滑轮组件和下滑轮组件作业,此时挂装组件处于收拢状态。在本申请中,通过调节件来将挂装组件由收拢状态切换为展开状态,并保持展开状态直至下滑轮组件与上滑轮组件分离,从而实现四倍率模式向二倍率模式的切换,进而不需要人工进行倍率的更换以加快更换吊钩装置倍率的速度。


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    Title :

    Tower crane and lifting hook device thereof


    Additional title:

    塔式起重机及其吊钩装置


    Contributors:
    BIN YING (author) / LI GUIFANG (author)

    Publication date :

    2024-06-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / B66D Haspeln , CAPSTANS



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