Design And Research Of Mine Lifting Cage Self-Generating Electric Device

Mine lifting system is an important part of coal mine production and transportation,which plays an important role in transporting personnel and materials in the process of coal mine mining.In order to ensure the safety of mine lifting system in operation,it is necessary to monitor the cage as an important part of mine lifting system,and its internal monitoring and lighting use are more important.However,in the wellbore,the working environment of the cage is complex,which makes it difficult to directly supply power through the cable inside the cage.The existing power supply scheme of the cage in the wellbore generally install a group of batteries on the top of the cage for power supply.At present,the power supply time of the battery is short,and it needs frequent replacement and maintenance.To solve the above problems,this thesis proposes a self-generating device of mine hoist cage,which can convert part of the mechanical energy generated during the operation of mine hoist system into electric energy,charge the battery on the top of the cage,and achieve the goal of reducing the charging frequency and maintenance time.The main research content of this thesis is as follows:(1)On the basis of the field investigation and literature research of the elevator system and the cage power generation device,the overall scheme design of the mine lifting cage self-generating device is carried out.After the comparison of the field evaluation and fuzzy comprehensive evaluation method,the crank slider type friction power taking device is selected as the design scheme,and the circuit module design of the scheme is completed.(2)Conduct structural design and simulation analysis for the selected device.Firstly,perform structural design for key components.Then,use modeling software to conduct 3D modeling of the device,and use simulation software to perform dynamic analysis on the modeled virtual prototype.Conduct wear analysis and modal analysis on the key components of the friction wheel.The analysis results indicate that the overall structure of the device is safe during operation,and the deformation of the inner hub of the friction wheel is small,making it safe to use.After analyzing the wear of the outer ring of the friction wheel for a period of time,it needs to be replaced.(3)Optimize the design of the swing arm of the self generating device,model the function using MATLAB,and optimize the volume under the constraints of swing arm size and strength.After optimization,the swing arm volume is 88.6% of the original volume,meeting the overall lightweight requirements.(4)Manufacturing physical prototypes and conducting testing.The test results indicate that the prototype can be used normally and can meet the required power generation requirements.Under the requirements of meeting the lighting requirements inside the cage and ensuring the monitoring of electricity consumption during the operation of the cage,dynamic analysis was conducted on the entire structure of the cage self generating device,modal analysis and wear analysis were conducted on the friction wheel,and the swing arm volume was optimized to meet the lightweight requirements.The prototype was tested,enriching the theoretical research of the cage self generating device and meeting the electricity demand inside the cage,It is of great significance for improving the safety of personnel inside the cage.Figure [52] Table [10] Reference [72]...