Structure Fatigue And Control System Research Of The Cleaning Device For Insulator

Insulator cleaning device is a kind of maintenance equipment for the railway,aiming to solve the pollution flashover of the insulator,which has a great engineering significance to improve the safety for the railway transportation.The traditional manual cleaning is not only inefficient and complicated,but also has a large workload and poor safety.Therefore,an efficient and safe equipment was researched to clean the insulator automatically.Firstly,according to the environment and functional requirements,the overall mechanical structure and working principle of the cleaning device were designed.The mechanical structure was carried out based on the idea of modularization design program.Mechanical modules includes chassis,rotary table,framework,collapsible transverse arm insulator cleaning arm,oblique wrist arm insulator cleaning arm and cleaning brush head.Based on the work process,the hydraulic transmission system was designed and the hydraulic components such as hydraulic cylinder,hydraulic pump,directional control valve and flow control valve were calculated and selected.Secondly,some numerical analysis was carried out.Through the finite element analysis,the stress distribution of the brush bar under the working conditions was obtained.Through a dynamic analysis,the stress-time history of the brush head mechanism was obtained.Then,based on the static and dynamic analysis results,combining with stress and fatigue theory,the fatigue life of the brush bar was calculated.Then,based on the mechanical structure and working requirements,the overall control system program was designed.According to the control scheme,the hardware of the system was designed and selected,which includes the PLC,switching power,sensor and wireless remote controller and the design of PLC peripheral circuit,main circuit and relay control circuit.etc.Based on the hardware scheme,the system software design was carried out,and the PLC program was written by step instruction and the idea of modular programming.Finally,the insulator cleaning device was tested both in the test site and the actual railway line.The testing results show that the cleaning device can operate normally in the working process.In the testing progress,the hydraulic system worked stably,the sensors reacted accurately,the cleaning efficiency was greatly improved and the cleaning effect was also very impressive,so the experiment results meets the expected design requirements.