Research On Hydraulic Auxiliary Drive System Of Heavy Duty Truck Front Wheel

Heavy-duty trucks are the main means of transporting building materials,cement,sand,and transporting food and supplies to poor mountain areas.Due to the inconvenience of traffic in these areas,the road conditions of heavy-duty trucks are very bad,and they may travel at great And the road conditions are complicated,and in the rain or winter snow walking on these roads when the wheel and the ground adhesion is small,so the case is prone to slippage,and even rollover,the general rear-wheel drive vehicles may appear The driving force is not enough,the vehicle drive performance greatly reduced,in order to make the vehicle in this road driving with a greater driving force,this paper in the original 6x4 drive the form of the wheel,the design of the front wheel hydraulic drive system,To improve the driving force of the vehicle.The main components used in the auxiliary drive system are hydraulic components.Compared with other forms of transmission,the hydraulic components have the advantages of large capacity,low inertia,quick start and braking,and easy to realize low speed and high torque.For some applications that require low speed and high torque For vehicles,hydraulic drive technology is an obvious choice.This article is based on the author in Dongfeng Motor Company,Shiyan,hubeito understand the practice of a 6x4 rear wheel drive a model vehicle,known in the engine model and the vehicle on the basis of some important parameters,from the hydraulic auxiliary system Modeling and variable pump control motor and other aspects of the study.Because the hydraulic system in the front wheel is the terminal element that drives the front wheel during the running process,this paper first parameterizes the main components in the front wheel hydraulic auxiliary drive system,and then simplifies the load model of the vehicle Based on the purpose of this study and the object of the study,the dynamics of the vehicle,as well as the vertical load distribution of the vehicle at the corner of the turning angle and the uphill,the front wheel hydraulic auxiliary drive system are respectively modeled in detail.When the vehicle is added to the auxiliary drive system,It is estimated from the original rear drive to the full-time vehicle,and it is judged whether or not it needs to be carried outmainly.According to the wheel slip rate and the speed of the wheel,the vehicle speed is estimated and Slip rate to make the calculation,the purpose is to keep the wheel speed before and after the same,to improve the driving performance of the car,which is the focus of this paper.Finally,this paper uses AMESim software to simulate the function of the front wheel auxiliary drive system.The final result of the simulation shows that the vehicle can be turned on and off in the set time,and the auxiliary drive system can meet the requirements of the heavy truck.