Lightweight Design Of Insulator Cleaning Device

With the intensification of energy crisis and global warming,"energy saving,material reduction and environmental protection" have become the inevitable trend in the current development of machinery manufacturing industry.Therefore,it is particularly significant for the lightweight design of mechanical structure.Mechanical lightweight design can be considered from three aspects: the selection of new materials,the improvement of processing technology and the optimization of mechanical structure.However,the optimization of mechanical structure has become an important way of lightweight design due to the limitation of funds and the processing technology.This paper originates from the insulator cleaning device jointly developed by the Engineering Training Center of Shijiazhuang Tiedao University and Hebei Yuniu Electric Co.,Ltd.Because the device is overweight,it cannot be installed and used on the catenary truck.For this reason,the insulator cleaning device is designed to be lightweight by the following studies.(1)Design the overall scheme of the insulator cleaning device and study the current method of lightweight.(2)The ADAMS software was used to analyze the working conditions of the cleaning device to obtain the movement trajectory of the end of the robot arm,which proves that this scheme can realize the action of cleaning the insulator string.At the same time,the time load history of the key components under various conditions is obtained,design provides a theoretical basis.(3)Using ANSYS Workbench software combined with the acquired time history to perform the finite element analysis on the upper slewing bearing and the moving mechanism of the key components of the cleaning device.The dynamic analysis results show that the upper slewing bearing and the moving mechanism of the key components of the cleaning device have good dynamic characteristics and reasonable structural design.The stress distribution cloud map and deformation cloud map of the upper slewing bearing and the moving mechanism obtained by the static characteristic analysis indicate that the upper slewing bearing and the moving mechanism have a lightweight design space.(4)Using the Design Explorer module in ANSYS Workbench and the obtained key components' time-load history and the stress distribution cloud chart,the structural optimization of the upper slewing bearing and the moving mechanism is carried out.Finally,the weight loss of the upper slewing bearing is 40.675 kg,reduced 50.8%;weight loss of the moving mechanism was 23.726 kg,which was reduced by 16% compared to the optimization,and the weight saving effect was obvious.(5)The static and dynamic characteristics of ANSYS Workbench are validated for the optimized the upper slewing bearing and the moving mechanism.The results show that the lightweight design of the upper slewing bearing and the moving mechanism satisfy the static and dynamic analysis requirements of the structure,and the light weight result is feasible.Through the lightweight design of the upper slewing bearing and the moving mechanism,the insulator cleaning device can reduce the weight by 64.401 kg,and the weight reduction effect is significant,which is instructive for the lightweight design of the subsequent mechanical structure.