Dynamic Research On Elevator Traction System Under The Action Of Safety Gear

The elevator is an important conveyance of people and goods.Because of the frequent use of elevators,people are paying more and more attention to elevators.The elevator safety gear,as a protection device for elevator emergency situations,plays an important role in ensuring passenger safety.Therefore,this paper uses the combination of basic theory,simulation analysis and experimental verification to study the dynamic behavior of elevator traction system under the action of safety gear.This paper starts with the basic discrete dynamic model of the traction system under the action of safety gear,the model is gradually complicated,the judgment of wire rope slack is introduced,and the coupling discrete dynamic model of the elevator traction system with consideration of the interaction between the car and the counterweight on both sides of the traction sheave and of the change of wire rope length during the running process is established;then based on the above model,the complex constraint relationship between the traction sheave and the wire rope is further introduced,and the impact of slip on the braking performance of the safety gear of the traction system is deeply studied.Through the two experiments of safety gear braking and brake braking,the correctness of the coupling discrete dynamic model of the elevator traction system is verified.Finally,the fuzzy PID controller is introduced to optimize and control the braking process.The research results of this paper help the elevator-related enterprises to deeply understand the dynamic performance of the elevator tractionsystem during the braking process,and to further study the vibration control method of the elevator traction system,also provide a theoretical reference for the realization of the steady braking of elevator traction system.