Study And Application On Muti-factor Coupling Horizontal Vibration Analysis And Vibration Reduction Technology Of High-speed Elevator Guide System

With the constant progress of urbanization,elevators,as vertical transportation tools for high-rise buildings,have gradually become an indispensable part of people’s work and daily life.Safety and stability have undoubtedly become the basic standards that high-speed elevators should meet.However,due to the defects of the installation and design of the guidance system,the elevator will have more or less vibration phenomenon during operation,which affects people’s riding experience.Combining the problem of uncomfortableness in high-speed elevators,the dynamic model of the guidance system was established based on the horizontal vibration with multi-factor coupling.The dynamic model was solved by Revewal precise time step integration method.Considering the influence of different structural parameters of high-speed elevator guidance system on its horizontal vibration,the optimization design method of high-speed elevator guidance system based on dynamic model was proposed.Finally,the system of dynamics analysis and vibration reduction optimization of high-speed elevator guidance system was developed.Therefore,the research on guidance system dynamics provides technical and theoretical support for solving elevator instability.The main contents of the thesis were summarized as follows:In the first chapter,the present situation of elevator in domestic and abroad was analyzed.The coupling modeling and related control technology in different fields and the vibration control technology of high-speed elevator were summarized.Then the origin,content and meaning of the subject were introduced.The framework of this paper was also sorted out.In the second chapter,the basic structure of the elevator and the guidance system were analyzed.The factors such as the Hertz force and the creep-slip effect of the guidance system were studied.Then the horizontal vibration model with multi-factor coupling of the guidance system was built based on the force balance and displacement coordination conditions.At last,a dynamic model of KLK2 high-speed elevator guidance system was established as an example.In the third chapter,a method that using Revewal precise time step integration to solve the horizontal vibration model with multi-factor coupling of high-speed elevator guidance system was proposed,and then the correctness of the solution method was verified by the vibration theory based on the principle of iterative solution of coupling vibration.The algorithm was applied to a high-speed elevator guidance system to analyze the influence of different structural parameters on its horizontal vibration.In the fourth chapter,the evaluation index and characterization of high-speed elevator vibration was researched.The optimal space and objective function of high-speed elevator guidance system and the parameters optimization model of guidance system were established.The damping method of high-speed elevator guidance system was researched.Finally,the relevant vibration damping technology was applied to KLK2 high-speed elevator guidance system as an example.In the fifth chapter,a software which used to analyze and reduce the vibration and of the high-speed elevator guidance system was developed.The application verification and experimental analysis were conducted in the design of the KLK2 high-speed elevator guidance system.The sixth chapter,by summarizing the full text and analyzing the inadequacies in the research of the essay,the paper put forward a new direction for the subsequent research work.