| In this paper, the travel drive system of wheeled milling machine as well as advantages and disadvantages of each ones have comprehensively been analyzed. The superiority of hydraulic front axle drive+rear auxiliary about wheeled milling machine have also been expounded. Through comparing and analyzing the mechanical transmission, hydraulic power transmission, the hydralic transmission and the pow transmission, especially for the present situation about wheeled motor drive system, the power auxiliary driver of rear wheel has been determined. Through analyzing the wheeled milling machine travelling theory and its traction performance, considering the slip rate and parastic power of all-wheel drive vehicle, the principle that control the theory speed of front wheel to meet the matching of traction and speed has been worked out. On this basis, the scheme of power auxiliary drive system about rear wheel has been designed, the matching principles of traction and speed has also been determined. Based on the research of the LX1000 wheeled milling machine, the theories described above have been validitied, the parameters of the main components about the power auxiliary driver of rear wheel have also been chosen.The theories of dynamics about the LX1000 wheeled milling machine's travel drive system and working unit have been analyzed. The mathematical model about all-wheel drive milling machine's drive system has also been set up. Based on the software MATLAB, the traction and speed matching model of the LX1000 wheeled milling machine have been set up and the simulations for its performance have also been carried on. Simulation results show that by controlling the front wheel theory speed, the traction and speed of all-wheel drive milling machine can be matched. Feasibility of the above program is verified. At the same time, the research method applied in the paper is suited for rear auxiliary drive of other engineering machinery. |
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