Speed Limiter

The speed limiter is one of the safety control components in the elevator safety protection system. When the elevator car is overspeeding or even in danger of falling for any reason during operation, and the running speed exceeds 115% of the rated speed, a signal will be sent in time to cut off the power supply circuit and brake the traction machine. If the traction machine still cannot brake at this time, the speed limiter will further drive the safety clamp at the bottom of the car to force the car to stop. The speed limiter is generally located on the floor slab in the elevator machine room, but it can also be directly installed on the load-bearing beam. The speed limiter without a machine room will also be installed on the guide rail or the bottom pit floor.

The safety clamp is a safety device that stops the car and clamps it on the guide rail when the speed exceeds the speed set by the speed limiter or when the wire rope breaks or loosens. It provides effective protection for the safe operation of the elevator. The safety clamp is installed on the car frame or counterweight frame. The safety clamp can be divided into instantaneous and progressive types according to the different stopping deceleration (stopping distance).

The brake is a mechatronic device, also known as a holding brake. It is the most important safety component of an elevator. It is mainly used for stopping or emergency braking of the elevator. It is an important part of the safe operation of the elevator. It undertakes many safety actions during the operation of the elevator, such as daily elevator parking brake, upward overspeed protection brake, and accidental movement brake of the car. It is usually installed on the traction machine.

The buffer is an elevator safety device that provides the last kind of safety protection. When the elevator exceeds the bottom or top floor of the terminal floor due to wire rope breakage, traction friction, insufficient brake force, or control system failure during upward or downward movement, the buffer will act as a buffer, just like the airbag of a car, to prevent the elevator car or counterweight from directly hitting the bottom or top, protecting the safety of passengers and equipment. It is generally installed in the bottom pit of the elevator shaft, directly below the car and counterweight.

Elevator wire ropes can be divided into traction wire ropes and speed limiter wire ropes according to their uses. The traction wire rope is used to suspend the car and counterweight, and the friction between the traction sheave and the traction wire rope drives the car and counterweight to run. The traction wire rope is an important elevator component and also one of the vulnerable parts.

screws offer several advantages over other fastening methods. Unlike nails, screws provide a more secure and durable hold, as they create their own threading when being driven into a material.This threading ensures that the screw remains tightly in place, reducing the risk of loosening or disconnection over time. Furthermore. screws can be easily removed and replaced without causing damace to the material, making them a more practical option for temporary or adjustable connections.