An Analysis of the Mechanism of the Self-Increasing Brake System

Abstract

The auxiliary brake is closely associated with the safety of passengers. Despite the issues of insufficient braking torque and excessive impact in the existing auxiliary brake, the self-increasing brake system has the characteristics of stable and reliable braking in favor of passengers’ safety. It is of great significance to study the mechanisms in the self-increasing brake system. In this paper, kinematic analysis along with mechanical analysis is used to study the braking torque under both static and dynamic conditions. The equivalent braking torque test and braking deceleration test are also conducted to evaluate the braking performance. It is shown that the braking in down direction conforms with the regulations. Researches have indicated that, even under the circumstance of a small theoretical value of braking torque, the self-increasing brake still meets the norms with a stable braking process as well as a limited impact, thanks to the combined effect of self-increasing torque. It can be seen that the self-increasing torque can directly influence the braking torque and the maximum deceleration.