Tus escalator yog ib qho chaw ruaj khov, hluav taws xob uas muaj hluav taws xob uas muaj cov kauj ruam txuas ntxiv mus, tsim los thauj cov neeg caij tsheb nce lossis nqis mus raws qhov siab.
Lub escalator muaj ib lub kauj ruam (ib qho hloov phaj conveyor) thiab tes tuav nyob rau ntawm ob sab (ib qho hloov siv siv conveyor). Nws cov khoom tseem ceeb muaj xws li cov kauj ruam, traction chains thiab sprockets, qhia kev tsheb ciav hlau, lub ntsiab tsav tsheb (suav nrog lub tshuab hluav taws xob, kev ceev reducer, nres, thiab kev sib kis nruab nrab), tsav ncej, cov kauj ruam tensioning, tes tuav, comb daim hlau, escalator truss, thiab hluav taws xob system. Ntawm cov neeg caij npav nkag, cov kauj ruam txav mus rau kab rov tav (ua kom yooj yim nce toj rau cov neeg caij tsheb) ua ntej maj mam tsim ib lub staircase; raws li lawv mus txog qhov tawm, cov staircase configuration maj mam ploj mus, thiab cov kauj ruam rov qab pib txoj kab rov tav. Cov kev txav no tau ua tiav los ntawm kev sib cuam tshuam ntawm cov kauj ruam 'lub log tseem ceeb thiab lub log sib koom ua ke, uas taug kev los ntawm kev sib txawv ntawm cov lus qhia.
