1、介紹傳動部位的間隙不能過大，一般控制在0.2～0.5mm左右，齒輪與齒條吻合時齒底的間隙為2.0mm。嚙合間隙過大或齒輪齒條磨損嚴重都是很危險的，嚙合深度不夠、磨損嚴重或軸向錯位過大，都會使嚙合面積減小而造成齒輪齒條強度降低，發生斷齒事故。齒輪齒條只掛住齒尖，嚙合面個別連1/3都達不到或新舊齒條不均勻，有異響或震動，這是非常危險的。
Space elevator manufacturers introduce transmission parts can not be too large, generally controlled at about 0.2 ~ 0.5mm, consistent with the rack gear tooth bottom clearance for 2.0mm. Backlash is too large or badly worn gear rack is very dangerous, not enough depth of engagement, badly worn or axial dislocation is too large, will make the engagement area is reduced causing the rack and pinion strength decreases, the occurrence of the accident broken teeth. Rack and pinion tooth tip only caught engaging surface are lower than individual or even a third of the old and new rack uneven, there is abnormal sound or vibration, which is very dangerous.

2、提醒大家檢查過程中應注意導輪與齒條的間隙不應太大，一般在0.2～0.5mm，滾輪

與導軌的間隙也要控制在0.2～0.5mm。
Lift manufacturers to remind you to check the clearance process should pay attention to the guide wheel and the rack should too, usually in the 0.2 ~ 0.5mm, the wheel and the rail gap should be controlled at 0.2 ~ 0.5mm.