Escalator
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Sab Hauv Tsev Thiab Sab nraum zoov Escalators
Lub escalator muaj ib txoj kev ntaiv thiab cov tes tuav ntawm ob sab. Nws lub ntsiab Cheebtsam muaj xws li cov kauj ruam, traction chains thiab sprockets, qhia rail systems, lub ntsiab kis tau tus mob systems (xws li motors, deceleration devices, brakes thiab intermediate kis tau tus mob links, thiab lwm yam), tsav spindles, thiab ladder txoj kev.