Electromagnetic brake

The electromagnetic body is the key part of the electromagnetic brake, which has a great influence on the stability and reliability of the electromagnetic brake. When brakes are continuously used on long downhill slopes or emergency brakes are adopted in high-speed driving, the temperature of working parts of brakes will rise sharply. When the temperature is high to a certain extent, the friction coefficient of the friction pair of the brake decreases and the braking efficiency decreases due to the effects of mechanical, physical and chemical factors. This phenomenon is called the thermal degradation of the braking efficiency. The thermal recession resistance of the brake is one of the important indicators to evaluate the performance of the brake. The temperature field of electromagnet and friction ring in each period of downhill is analyzed by finite element method, and the accuracy of the analysis model and method is verified by experiments.

The electromagnetic brake is the executive part of the whole braking system. The electromagnetic brake is mounted on the trailer wheel. The whole Meng machine is mainly composed of electromagnet, lever driving mechanism, front and rear brake shoe, bottom plate and friction ring.

A mechanical part stops or decelerates moving parts in a machine. It commonly referred to as brakes and sluice gates. The brake is mainly composed of brake frame, brake parts and control device. Some brakes also have automatic adjustment devices for brake pieces clearance. In order to reduce the braking moment and structure size, the brake transmitter is usually installed on the high-speed axle of the equipment, but the large-scale equipment (such as mine hoist, elevator, etc.) with higher safety requirements should be installed on the low-speed axle near the working part of the equipment.

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