Buffer
If the car or counterweight beyond the bottom, reduce the strong impact shock buffer to ensure the car and counterweight safety stop. Including oil buffer, polyurethane buffer and so on

Overspeed governor

Car runs faster than the rated speed, speed limiter switch the power off first action, then tighten the governor rope, so that safety gear action. Including down ward action speed governor, down ward and upward action speed governor , mechineroomless overspeed governor and so on .