Design And Research Of Electro - Hydraulic Control System Of Vehicle–mounted Double–arm Hedge Trimmer

With the rapid development of social economy,the mileage of highways has continuously increased.As a result,the greening area of expressways has also increased.While greening brings benefits to people,it also causes some necessary problems,among which the problem of vegetation trimming is particularly acute.Therefore,the application of hedge trimmer is particularly important,in order to improve its applicability,efficiency,economy and safety.The research group has designed a vehicle-mounted double-arm hedge trimmer which applied to vegetation trimming of highway.This article is based on the reference of domestic and foreign advanced technologies,and the electronic control system of the working device was studied and designed.Firstly,the basic structure and working principle of vehicle-mounted two-arm hedge trimmer are introduced in this article,and the working principle of the hydraulic system is described,then the electronic control system of the hedge trimmer is designed based on these.The composition and working principle of each subsystem in the hedge trimmer electric control system are analyzed in detail,including the amplitude and stretch of arms and the amplitude and stretch of tool swinging.Secondly,according to the function analysis of the working device to determine the input and output signals of the control system,the overall hardware structure of the control system is designed.The DX-EC48 C controller of Douxie Shanghai is used as the hardware control core of the control system.The Hand-held control panel sends the execution signal to the control system.CAN bus communication technology is used to complete the transmission of the information between the control system modules,andthe important control parameters of the working device are detected through the upper computer interface,which makes it easy for the operator to keep abreast of the working status of the device.Then,the control flow chart of the whole work device and each subsystem is completed.On this basis,software control of the hedge trimmer system is realized by using CODESYS programming software.The program of overall control and I / O initialization module is programmed,taking turntable action as an example,the control program has been prepared.Finally,the completed control system was tested before and after installation.The results show that the performance of the electro-hydraulic control systemmeets the expectedrequirements.Lay the foundation for a higher level of development such as efficient and intelligent hedge trimmer...