The Development Of Intelligent Wet Disc Brake For Shearer

Compared with dry disc brake, wet disc brake has many advantages, such as good heat dissipation, braking performance stability, long life. According to the actual braking condition of shearer, this paper analyzes the temperature field distribution of 3D model. Aiming at the problem that the temperature of the brake and the wear of friction plate require human to judge, this paper develops a kind of intelligent brake that can monitor the temperature and the wear of friction plate. The main work is as follows:According to actual working condition of the wet brake and the working principle, this paper determines the braking parameters, finite element and displacement constraints.Referencing to the using wet brake, it establishes 3D finite element model. It simulates emergency braking by using the finite element software Abaqus and obtains the 3D temperature field distribution and the maximum temperature region. It deals with the curve with software excel and concluds a more realistic experience formula of the brake which provides an important theory for temperature monitoring of the brake.In order to determine the wear of friction plate and brake temperature, an online monitoring system is designed.C8051F330 is the core of the system. It designs a displacement and temperature acquisition module, memory circuit, alarm circuit, host circuitry, and related software programs. It uses VB to write a PC interface and realizes communication by RS232.It realizes the real-time display of temperature and the wear amount of the friction plate.According to the explosion-proof electrical theory and technology, this paper determines the installation position of the hardware circuit and sensors reasonably. Finally on the basis of hardware circuit and sensor installation location, it designs flameproof shell.On the basis of the program of this paper, hardware circuit and software design are finished. After the commissioning, this system has realized the monitoring to the wear of friction plate and the temperature of brake,which has provided a guarantee for the shearer...