Railroad Crossing Barrier

Railway buffers can be installed at the end of any railway terminal line as safety devices to prevent vehicles from crossing beyond the track terminus. They are a vital component of railway transportation, designed to ensure trains come to a safe stop.

I.Common Types of Railway Wheel Stoppers:

1. Fixed Wheel Stoppers
Structure: Primarily composed of a stopper base, buffer head, and brake rail.
Installation: Secured to the track at the end of the railway line using anchor bolts.
Applications: Suitable for scenarios with low vehicle blocking requirements and lower line speeds.

2. Sliding-Type Car Stopper
Structure: Comprises a main frame, brake rail, buffer assembly, and sliding mechanism.
Operating Principle: Upon vehicle impact, the main frame slides along the rail while the buffer absorbs kinetic energy.
Applications: Suitable for high-speed rail lines, effectively dispersing collision forces.

3. Hydraulic Vehicle Stopper
Structure: Includes a hydraulic cylinder, piston rod, buffer pad, and control system.
Working Principle: Utilizes the powerful resistance provided by the hydraulic system to block vehicles. Upon impact, pressure within the hydraulic cylinder rapidly increases, generating blocking force.
Application: Suitable for scenarios requiring high blocking precision and force, such as high-speed rail lines.
Hydraulic buffer fixed-type buffers are simplified versions of hydraulic buffer sliding-type buffers. The hydraulic buffer effectively protects the coupler and absorbs part of the vehicle's kinetic energy. They are specifically designed for applications without a sliding distance, involving smaller vehicle formations and lower impact speeds. Additionally, the buffering capacity of the hydraulic buffer can be customized according to user requirements. When necessary, a concrete retaining wall with a foundation should be installed.

II. Structure and Working Principle of Railway Wheel Stoppers:
1. Cushioning Rubber Plate
2. The impact force from the vehicle is transmitted to the brake rail via the cushioning rubber plate and the left and right support arms of the bracket.
3. Friction resistance generated between the brake rail, spring seat, and base rail prevents the vehicle from sliding.
4. The elastic pressure device, comprising leaf springs, spring seats, wedge irons, and bearing seats, is installed in the brake rail and booster brake rail of the main frame. Its function is to generate preload when the car stopper is stationary, increasing frictional resistance during braking. It also ensures continuous braking force application during dynamic operation until the vehicle comes to a complete stop.
5. The support arm plate is fabricated from a single plate. Its main frame consists of a support base, front and rear crossbeams, and upper and lower diagonal beams, all tightly interconnected. This rational structure provides substantial overall strength, capable of withstanding impacts from vehicles traveling at high speeds.
6. The support arm plate features a lower horseshoe-shaped block that directly inserts into the brake rail. This simple structure facilitates easy installation, maintenance, and reset.
Railway buffers play a vital role in safeguarding road users and train passengers. They are extensively deployed at railroad crossings, particularly at high-traffic intersections, high-speed rail lines, and crossings near densely populated areas. These devices help reduce traffic accidents and ensure smooth, secure traffic flow.