The invention relates to an elevator, and provides an elevator double-rotation-direction screw traction device. The elevator double-rotation-direction screw traction device can meet the requirement for additionally installing an elevator in a built building. According to the technical scheme, the elevator double-rotation-direction screw traction device is characterized by comprising a frame, a first lifting platform and a second lifting platform which can be vertically positioned in the frame in a sliding manner, a screw rod which can be positioned in the frame in a manner of rotating around avertical axis and is provided with an upper thread and a lower thread, a first nut which meshes with a first thread and is fixed to the first lifting platform, a second nut which meshes with a secondthread and fixed to the second lifting platform, two first pulleys arranged on the first lifting platform, two second pulleys arranged on the second lifting platform and two steel wire ropes; the spiral directions of the upper thread and the lower thread are opposite; and one ends of the two steel wire ropes are fixed to the frame, and the other ends of the two steel wire ropes sequentially windaround the second pulleys and the first pulleys and then are fixed to an elevator car.

    本发明涉及一种电梯。目的是提供一种电梯双旋向螺杆曳引装置,该装置应能满足在已经建成的建筑物中进行加装电梯的需求。技术方案是:一种电梯双旋向螺杆曳引装置,其特征在于:该装置包括框架、可竖直滑动地定位在框架中的第一升降台与第二升降台、可绕竖直轴线转动地定位在框架中并且设有上螺纹与下螺纹的螺杆、与第一螺纹啮合并与第一升降台固定的第一螺母、与第二螺纹啮合并与第二升降台固定的第二螺母、设置在第一升降台的两个第一滑轮、设置在第二升降台的两个第二滑轮、两条钢丝绳;所述上螺纹与下螺纹的螺旋方向相反;两条钢丝绳的一端分别与框架固定,另一端分别依次绕过第二滑轮与第一滑轮后与电梯轿厢固定。


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    Title :

    Elevator double-rotation-direction screw traction device


    Additional title:

    一种电梯双旋向螺杆曳引装置


    Contributors:
    JIANG LINXIANG (author) / WU CHUANYU (author)

    Publication date :

    2020-11-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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