Reliability Analysis of Passenger Elevator Block Brake Based on Composite Gamma Crocess

Passenger elevator block brakes play an important role in ensuring the safe and smooth operation of elevators and safeguarding passenger safety. Firstly, according to the structure and working principle of the block brake, the main failure modes of the block brake are analyzed, the braking torque is identified as the main performance index of the block brake, and a composite degradation model of the braking torque consisting of two Gamma processes is established to characterize the degradation of the braking torque; finally, the test is carried out, and a reliability analysis is performed on the model of the brake.