Design Of Power Drive System For 50 Tons Mine Truck

Mining vehicles are the main means of transport in off-highway fields.The powertrain system is one of the most critical components for their advancement.The choice of engine and transmission system parameters,as well as the degree of cooperation of the vehicle powertrain has a significant impact on the vehicle’s power performance,energy consumption and vehicle exhaust emissions.In this paper,the power transmission system of 50 ton mining vehicles was studied and designed.According to the principle of vehicle powertrain system and the basic requirements for use,based on the systematic analysis of the powertrain transmission mode of the existing mine dump truck,the overall powertrain system of this thesis is determined.According to the characteristics of short-distance transport of complex road in mining vehicles,the design method of powertrain system was analyzed.In order to solve the problem of low engine power utilization efficiency effectively,a mathematical model was established and the selection and operation rules of engine design were analyzed.The transmission system components of the operating principle and matching design methods were studied through analysis of the dynamic indicators.Based on the establishment of the mathematical model,the optimal design mathematical model of the vehicle powertrain is established based on the engine characteristic curve and the transmission ratio of the transmission system with the maximum speed of the vehicle and the grade of climbing as the objective function.The design of the vehicle power calculation program simplified the design calculation process.The basic design parameters of 50 ton mining vehicle were analyzed and confirmed.Through the research of powertrain system design and dynamic performance,the scheme of powertrain system in this paper was designed and designed to improve the power of the vehicle,provided a theoretical basis for system reasonable design match.