What is a bumper in lifts?
A pliable shock absorber that is placed at the end of the lift hoistway, that is operated either hydraulically, by springs or similar installations. They have to slow down a car that impacts at rated speed, without the deceleration exceeding a specific value. This should ensure that no-one in the car is harmed by an operational deficiency and all too fierce impact on the bumper
Bumpers are mounted onto steel or concrete bases in the hoistway pit or at the underside of the car’s supporting frame or the counterweight frame.
In the case of low operating speeds rubber made buffers are mostly used, whereas high operating speeds require energy dissipation type hydraulic buffers.
see also: Gripping deviceback to overview