Simulation And Analysis Of Hydraulic System For Working Device Of Comprehensive Cleaning Vehicle For Tunnel Wall And Noise Barrier

With the development of China's transportation industry,the construction of expressway is increasing.Meanwhile,in order to improve the noise on Expressway,the sound barrier arises at the historic moment.But as time goes on,the sound barrier is polluted more and more by air exhaust and rainwater.This will not only affect the beauty of the sound barrier,but also affect the safety of driving.However,the most common ways to clean the sound barrier are manual cleaning and high-pressure water washing by sprinkler.However,this way of cleaning not only increases the working intensity and efficiency of the cleaning workers,but also causes the waste of resources and endangers the health of workers.In addition,along with the extension of the mileage of expressway,there are more and more highway tunnels.The environment in the tunnel also affects the beauty of the tunnel and the safety of driving,so we need to clean and maintain the inner wall of the tunnel.At present,there is a huge demand for this kind of cleaning and maintenance equipment with comprehensive functions in the market.The sound barrier and tunnel comprehensive cleaning equipment are aimed at the above problems,which is a device that can not only wash the noise barrier of the expressway,but also can wash the wall of the highway tunnel.At the same time,it can also automatically clean ancillary facilities such as urban road isolation fence,expressway anti dropping net and so on,so as to realize one machine with multiple functions and reduce the cost of equipment purchase by enterprises.The research work of this paper mainly includes the following aspects:1.Based on the functional characteristics and technical requirements of the sound barrier and the tunnel cleaning vehicle,the working scheme of the cleaning vehicle is determined.The schematic diagram of the hydraulic system is designed according to the working conditions of the working device.2.Completing matching calculationof main hydraulic components in the hydraulic system,determining the system hydraulic pressure,cylinder diameter,motor torque,quantitative pump displacement and other parameters and completing the selection of the main elements.3.The AMESim model of various valves and the AMESim model of hydraulic system are established,the parameters of main hydraulic components are set up,and the hydraulic system is simulated and analyzed.4.The water route is designed,including determining the entire device's water flow,the required power source pump,sprinkler head and water pipe line and analyzing the resistance loss along the whole pipeline.5.The obstacle avoidance system of the working device is designed,including two parts,the detection device and the control device,so that during the cleaning process,it can detect obstacles automatically and avoid obstacles in time,so as to improve the automation and safety reliability of the cleaning equipment.