Design And Research Of Hydraulic System Of Vehicle-mounted Double-armed Hedge Trimmer

China is a vast country with inconvenient transportation among various provinces and cities.In order to speed up economic development in various regions,China began to construct the expressways in 1988.During the construction of expressways,the greening of the central isolation belt and the slope becomes an indispensable part,which plays a vital role in restoring and improving the vegetation,natural landscape and the stability of roadbed slope damaged by building highways.Through the comparative study of hedge pruning technology,the pruning development has great significance to improve the work efficiency,ensure the trim work quality and reduce the labor intensity.At present,the trim equipment researched and developed by domestic manufacturers usually adopts single arm to finish the work.Although it has the advantages of simple structure,easily to implement,during the work process the belt and the slope has to be pruned repeatedly because of its trim width is not enough,which can not meet the high efficiency and high quality work requirements.The vehicle-mounted double-arm hedge trimmer designed in this paper adopts the method of long and short arms,which can realize the action of different heights and widths,and can complete the work of the slope or the central hedgerow at one time.In addition,at the non-working state,the long and short arms can be fully retracted into the carriage to ensure traffic safety.Firstly,according to the design requirements of the trimmer machine and the hydraulic system of all types of road maintenance machinery,the design of hedgerow machine hydraulic system is implemented.Secondly,according to the designed hydraulic system and the machine’s working condition,the calculation and selection of the components is carried out.Finally,the results based on the modeling and simulation of hydraulic system provide strong bases for the theoretical research.The processing and commissioning of the hedge trimmer further validate the feasibility of the design and calculation of the hydraulic system.