1、介绍传动部位的间隙不能过大，一般控制在0.2～0.5mm左右，齿轮与齿条吻合时齿底的间隙为2.0mm。啮合间隙过大或齿轮齿条磨损严重都是很危险的，啮合深度不够、磨损严重或轴向错位过大，都会使啮合面积减小而造成齿轮齿条强度降低，发生断齿事故。齿轮齿条只挂住齿尖，啮合面个别连1/3都达不到或新旧齿条不均匀，有异响或震动，这是非常危险的。
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、提醒大家检查过程中应注意导轮与齿条的间隙不应太大，一般在0.2～0.5mm，滚轮

与导轨的间隙也要控制在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.