大輪拖電控PTO濕式離合器設(shè)計研究
[Abstract]:Tractors are the most important mechanical equipment in agricultural production and transportation. The development of automation and intellectualization of tractors is of great significance to the modernization and mechanization of agriculture in our country. The power output device is an important part of tractor traction function. At present, the traditional non-independent tractors are still widely used in domestic production. Power output shaft, the device must overcome both tractor start and agricultural machinery start working resistance, this will cause a larger engine load, affect the tractor work coherence, but also reduce the efficiency of its work. Wet multi-disc clutch in power output device can effectively solve the traditional non-independent dynamic. In this paper, a method of parameter optimization of wet clutch for tractor power output shaft based on improved genetic algorithm is presented. The optimization model of wet clutch is determined. The structure of wet clutch for tractor power output shaft is optimized based on improved genetic algorithm. The rationality and validity of the proposed optimization method are verified. On the basis of explaining the structure and working principle of the tractor power output shaft wet clutch, the clutch engagement process is studied, the torque transfer characteristics of the clutch are analyzed, and the dynamic analysis and modeling of the wet clutch engagement process are carried out in stages, and the conclusion is drawn. The electro-hydraulic control system of tractor power output shaft wet clutch is designed and studied, and the evaluation index of tractor power output shaft wet clutch engagement quality is expounded. Finally, the Dongfanghong-1604/1804 series of large-scale ship towing appears according to the current market feedback. Through careful analysis and research, a series of effective measures have been taken to improve the transmission shell and increase the first-stage transmission, to change the position of the lifting pump and the oil suction port of the lubricating pump, to strengthen the hardness of the disc spring and to change the position of the oil drain hole, etc. The emptying capacity of the oil pump avoids the intake of the lubricating pump, solves the difficult problems such as unstable pressure and non-stop power output. It has important reference value for clutch manufacturers to optimize their products, and has certain guiding significance for other domestic tractor manufacturers to solve similar problems.
【學位授予單位】:吉林大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:S219.1
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