Research On Elevator Guide Rail Automatic Alignment Control System

Elevator guide rail is the key to the elevator guide system components.Its straightness directly affects the safety of the passenger elevator and comfort,the elevator guide rail after cold working process.As a result of the rapid expansion of the elevator guide rail industry and the increasing requirement of straightness,the traditional artificial straightening method has been difficult to meet the production requirements,and the accuracy requirement of industrial production and improve the production efficiency.Firstly,this thesis studies straightening theory and compares several control methods of straightening stroke and determines the appropriate straightening stroke which satisfies the system.Based on the elastic-plastic theory,combined with the section complex and asymmetrical characteristic of T guide rail,establishes its side and top's load-deflection model is established and the T guide rail's straightening stroke empirical formula is calculated based on the model.Secondly,the thesis deals with the construction of the overall structure and design of operational logics of the system.The hardware platform is developed with laser displacement sensor,multi-axis motion controller,servo motor,stepping motor and industrial control computer and so on.Taking account of the actual environment in which the system may work,the design of motion controller,servomotor driver,step motor drover are discussed in detail.Finally,according to the straightening action logic and system requirements,put forward the overall framework of application software.Using Visual C + + combined with multi-thread technology,database technology and Winsock network technology,alignment control system software is developed.According to user's actual need,function modules are developed such as database to empty,parameter settings,guide rail curve query and so on,which can effectively solve various needs in actual operation.