What is an Elevator Pitch?

Elevator guide rail is an elevator component composed of steel rails and connecting plates. It is divided into car guide rails and counterweight guide rails. Divided into T-shape, L-shape and hollow shape from the cross-sectional shape. While the guide rails play a guiding role, they bear the impact force of the car and elevator during braking, and the impact force of the safety gear during emergency braking. The magnitude of these forces is related to the load and speed of the elevator, so guide rails should be selected according to the speed and load of the elevator. The car guide rail is usually called the main rail and the counterweight guide rail is the auxiliary rail.

Elevator guides provide guidance for the car and counterweight when the elevator is running.

It also plays a supporting role when the safety gear is braking, and is an important part in the elevator system.

The importance of guide rails is analyzed from the aspects of elevator safety and comfort.

1) Security. The main factor that affects the safety of an elevator is the material of the guide rail. The material of the guide rail is too hard or uneven (partially hard). When the brake is clamped, sufficient friction will not be obtained, which will cause the brake to fail, and the most serious working condition in an elevator accident, such as a car falling. The guide rail must also have sufficient strength to ensure the support of the car and the impact force when the safety gear is braking.

2) Comfort. There are several aspects of elevator guide rails affecting elevator comfort:

a. Connection accuracy of guide rails: The connection accuracy of solid guide rails is ensured by the end dimensions of the guide rails and the symmetry of the male and female tongues. The connection accuracy of hollow guide rails and escalator guide rails is guaranteed by the end dimensions of the guide rails and the shape and position tolerances The connection accuracy of the guide rail directly affects the smoothness and comfort of the elevator.

b. Roughness of the guide surface of the guide rail: The roughness of the guide surface of the guide rail directly affects whether the guide shoe can run smoothly on the guide surface, and also affects the storage of lubricant, thereby affecting the running quality of the car.

c. Straightness and twist of the guide rail: The bending and twisting of any point on the guide rail will give the car a lateral force, which will affect the linear movement of the car up and down, and make the car shake. As the elevator speed increases, the car will Vibration, which affects comfort.

Elevator guides are divided into three categories: solid guides, counterweight hollow guides, and escalator guides.

GB10060-93 <Elevator Installation and Acceptance Specifications> Installation technical requirements for guide rails:

The elevator guide rail industry is in a healthy development stage. In the future, the elevator guide rail market will gradually develop towards high-precision, high-speed elevator guide rails, which also brings opportunities to the development of the elevator guide rail industry ^[3] .