The invention discloses a change gear in an elevator landing door system. The section of a metal rolling wheel framework is in a T shape, and is of a hollow structure. A limiting check ring extending in the radial direction of a through hole is arranged on the opening edge of the through hole, in the same side with a transverse part, of a longitudinal part, and a first arc-shaped annular groove is formed in the inner hole wall of the through hole. A metal shaft sleeve is arranged in the through hole, and a second arc-shaped annular groove corresponding to the first arc-shaped annular groove is formed in the outer surface of the metal shaft sleeve. Balls are annularly distributed in a chamber formed by the first arc-shaped annular groove and the second arc-shaped annular groove. A non-metal outer ring is connected to the longitudinal part of the metal rolling wheel framework in a sleeving manner, and an arc-shaped protrusion is annularly distributed on the outer surface of the peripheral ring of the non-metal outer ring. At least one protruding rib is annularly arranged on the arc top face of the arc-shaped protrusion, the longitudinal part of the metal rolling wheel framework is further sleeved with a metal backup shoe, and the metal backup shoe is connected to the end face of the longitudinal part in a fastened manner. The technical aim of reducing the production cost of the change gear in the elevator landing door system is achieved, and the production cost is low.


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    Title :

    Change gear in elevator landing door system


    Contributors:

    Publication date :

    2016-01-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / F16C SHAFTS , Wellen



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