A crucial component in the braking systems of heavy vehicles, particularly trucks and buses, utilizes stored mechanical energy to apply the brakes. This mechanism is primarily designed for parking and emergency situations. It functions independently of the vehicle’s air brake system, providing a failsafe in case of air pressure loss. This ensures the vehicle remains stationary even when the primary braking system is compromised.
The importance of this safety feature cannot be overstated. It prevents unintended vehicle movement, especially on inclines, reducing the risk of accidents. Historically, relying solely on air pressure for parking created vulnerabilities. The introduction of this spring-actuated system provided a more reliable and robust solution, significantly enhancing vehicle safety and preventing rollaway incidents.
