Hydraulic System Design And Power Matching Of Cleaning And Snow Removal Integrated Vehicle

Due to the different seasons of snow sweeper and cleaning vehicle,these two sanitation vehicles are idle,resulting in a waste of resources.The integrated cleaning and snow removal vehicle equipped with snow removal device on the cleaning vehicle can effectively solve this problem.Among them,the hydraulic system is the key to the integration of cleaning and snow removal functions,and power matching has an important impact on the stable operation of the cleaning and snow removal device.Therefore,this paper studies the hydraulic system design and power matching of the integrated cleaning and snow removal vehicle.Firstly,on the basis of the high-pressure cleaning vehicle,according to the functional requirements of the integrated vehicle cleaning and snow removal,the paper put forward the design requirements of the snow removal device hydraulic system,drawed the working principle of the hydraulic system of the working device and established its control strategy,determined the relevant parameters of the hydraulic system and selected the main hydraulic components through theoretical calculations.Secondly,based on the study of the power distribution relationship between engine,hydraulic pump and load,the power matching between the engine and the hydraulic system of the integrated cleaning and snow removal vehicle was carried out,and the required engine output power of the hydraulic cylinder and hydraulic motor in the snow removal,snow sweeping and cleaning conditions was calculated,and the matching hydraulic system was checked.Finally,a hydraulic system was built on the AMESim software platform.Based on the built hydraulic system,the simulation analysis was conducted on the snow removal and snow sweeping conditions respectively,and the change curves of the stroke and working pressure of the hydraulic cylinder during the lifting and yaw of the working device were obtained.As well as the change curves of the speed,torque and flow of the hydraulic motor were also obtained when the roller brush rotates.The research results show that the power required by the hydraulic cylinder and the hydraulic motor are within the engine power range,and the calculating values of the top vehicle speed and the maximum climbing slope are higher than the design values,which verified the rationality of power matching.Meanwhile,the snow shovel and the roller brush can meet the requirements of stable operation in a relatively short time,and the error between the simulation results and the theoretical results is small,which proved that the design of the hydraulic system of the integrated cleaning and snow removal vehicle gratified its performance and technical requirements,and has a better stability.