Dynamic monitoring of mine hoist braking system based on PLCs

In order to ensure the reliability and security of the mine hoist, the typical fault mechanism of braking system is analyzed by establishing brake performance analysis models. The fault analysis tree is constructed by the theory of Fussell-Vesely and the method of how to monitor fault parameters is discussed. The industrial test results indicate that some malfunction, such as lack of braking effort, failure of disc spring and block of hydraulic cylinder can be found by the run parameters of brake. Finally, the equipment is developed using the PLCs, which makes dynamic monitoring of hoist braking system come true.