The invention relates to a safety protection device for preventing a tower crane from falling down and the tower crane comprising the safety protection device. The tower crane at least comprises a middle arm and a tower body top connecting piece. The safety protection device comprises a damping connector and a non-completely closed ear plate assembly. The damping connector is fixed to the middle arm and the tower body top connecting piece at the two ends respectively. The lug plate assembly is at least provided with an upper lug plate, a pair of lower lug plates and a hinge pin shaft. An upper lug plate is fixed to the middle arm, a lower lug plate is fixed to the tower body top connecting piece, the lower lug plate is located on the opposite side of the upper lug plate, and a hinge pin shaft extends to penetrate through the upper lug plate and the lower lug plate and can pivot and move up and down by a distance in the lower lug plate. The lug plate assembly cooperates with the damping connector, so that the middle arm can upwarp relative to the tower body top connecting piece and then return to the normal working state. The safety protection device allows the cantilever crane to turn over properly, prevents the cantilever crane from turning over or falling off excessively, and reduces shearing force borne by the pin shaft so as to prevent the tower crane from falling down.

    本发明涉及一种用于防止塔机倒塔的安全保护装置和包括安全保护装置的塔机。所述塔机至少包括中间臂和塔身顶部连接件。所述安全保护装置包括阻尼连接器和非完全封闭的耳板组件。阻尼连接器在两端处分别固定到中间臂和塔身顶部连接件。耳板组件至少具有上耳板、一对下耳板和铰接销轴。上耳板固定到中间臂,下耳板固定到塔身顶部连接件,下耳板位于上耳板的相对侧上,铰接销轴延伸穿过上耳板和下耳板并且能够在下耳板内枢转和上下移位一段距离。耳板组件与阻尼连接器协作,使得中间臂相对于塔身顶部连接件能够上翘并随后回复到正常工作状态。安全保护装置允许臂架适度翻转,还防止臂架过度翻转或脱出,以及减小销轴受到的剪切力,以防止塔机倒塔。


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    Title :

    Safety protection device for preventing tower crane from collapsing and tower crane


    Additional title:

    用于防止塔机倒塔的安全保护装置及塔机


    Contributors:
    MI CHENGHONG (author) / SONG FENGWEI (author) / ZHENG HUAIPENG (author) / MENG KANG (author)

    Publication date :

    2023-08-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES



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