Cov khoom tseem ceeb ntawm cov laj kab laj kab hlau muaj xws li thav duab txuas, qhib mechanisms, kaw lub kaw lus, thiab pab kho qhov chaw. Cov khoom no ua haujlwm ua ke kom ntseeg tau tias lub rooj vag raug ntsia tau zoo thiab ua haujlwm tau zoo. Qhov tseem ceeb, cov khoom txuas txuas ntawm lub rooj vag ncej thiab lub rooj vag nplooj muab kev txhawb nqa tseem ceeb thiab kev ruaj ntseg; lawv yuav tsum muaj lub zog txaus thiab kav ntev kom lub qhov rooj ruaj ntseg thaum siv sijhawm ntev -.
Hinges thiab pivots yog qhov tseem ceeb txav qhov chaw uas txuas lub rooj vag nplooj mus rau lub thav duab, ua kom qhib thiab kaw haujlwm. High-zoo pob khawm thiab pivots muaj kev thauj khoom zoo heev-cov kabmob muaj peev xwm thiab hnav tsis kam, txo qis wobbling lossis deformation thaum siv. Tsis tas li ntawd, xaiv cov pob khawm tsim nyog raws li lub rooj vag qhov hnyav thiab kev siv ntau zaus ua kom muaj kev ua haujlwm zoo.
Accessories xws li xauv, swb bolts, thiab latches pab txhim khu lub rooj vag kev ruaj ntseg. Locks tiv thaiv kev nkag tsis raug cai, thaum swb bolts thiab latches txhawb kev ruaj ntseg thaum lub rooj vag kaw. Nyob ntawm daim ntawv thov tshwj xeeb thiab kev ruaj ntseg, ib qho tuaj yeem xaiv ntawm cov txheej txheem xauv cov txheej txheem thiab cov khoom uas muab kev tiv thaiv ntau dua.
Hlau laj kab rooj vag kuj suav nrog cov khoom siv xws li fasteners, kev txhawb nqa, thiab lub kaus mom tiv thaiv. Fasteners koom nrog cov qauv tsim kom muaj kev ruaj ntseg tag nrho, thaum lub kaus mom tiv thaiv tiv thaiv cov dej nag los ntawm cov tubing steel, yog li txo qhov kev pheej hmoo ntawm corrosion. Kev xaiv kom raug thiab kev teeb tsa ntawm cov khoom siv no tsis tsuas yog txhim kho lub rooj vag kev ua tau zoo tab sis kuj tseem txuas ntxiv cov khoom lag luam tag nrho cov kev pab cuam lub neej.
