Electromagnetic brake introduction
The electromagnet is a key part of the electromagnetic brake and has a great influence on the performance stability and reliability of the electromagnetic brake. When the brake is continuously used on the long slope of the car or the emergency brake is applied during high-speed travel, the temperature of the brake working part rises sharply. When the temperature is high to a certain extent, due to the mechanical, physical and chemical factors, the friction coefficient of the brake friction pair is reduced, and the braking performance of the brake is lowered. This phenomenon is called thermal degradation of the braking performance, and the brake is Heat decay resistance is one of the important indicators to evaluate the performance of the brakes. In the following, the finite element analysis method is used to analyze the temperature field of the electromagnet and the friction ring at different time periods, and the accuracy of the analysis model and method is verified by experiments.
The electromagnetic brake is the actuator in the entire brake system. The electromagnetic brake is mounted on the trailer wheel. Its structure is shown in Figure 1. The whole brake device is mainly composed of electromagnet, lever drive mechanism, front and rear brake shoes, bottom plate and friction ring.
A mechanical part that stops or decelerates moving parts in the machine. Commonly known as brakes, brakes. The brake is mainly composed of a brake frame, a brake member and an operating device. Some brakes are also equipped with automatic adjustment of the brake gap. In order to reduce the braking torque and structural size, the brakes are usually mounted on the high-speed shaft of the equipment, but large equipment with high safety requirements (such as mine hoists, elevators, etc.) should be installed in the low-speed shaft close to the working part of the equipment.