Influence of accumulator parameters on the hydraulic impact of a chopping and cutting load sensing system

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (14) : 270-277.

CHEN Yuanling, CHEN Chengzong ,PENG Zhuo ,CHEN Haonan,WANG Mengqiao,SHI Hao

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Abstract

In the process of sugarcane mechanization harvesting, the load with large amplitude fluctuation and the frequent operation of multi-way directional valve produce large hydraulic impact. In this paper, the sugarcane chopping and cutting load sensitive system of sugarcane combine harvester is studied, and an accumulator is added at the outlet of pump to suppress hydraulic shock. Based on the measured load data of sugarcane, the simulation model of chopping and cutting load sensing system is established based on AMESim. The influence rule of accumulator parameters on hydraulic shock of sugarcane chopping and cutting load sensing system and the optimization matching method are studied, and the simulation results are verified by experiments. The results show that the closer the pre-charging pressure of the accumulator is to the working pressure, the better the pressure shock suppression effect is, and the faster the pressure response speed is. The optimal range of the pre-charging pressure of the accumulator is 50% to 83% of the normal working pressure of the system.

Key words

sugarcane combine harvester / load sensitive system / impact of inhibition / accumulator

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CHEN Yuanling, CHEN Chengzong,PENG Zhuo,CHEN Haonan,WANG Mengqiao,SHI Hao. Influence of accumulator parameters on the hydraulic impact of a chopping and cutting load sensing system[J]. Journal of Vibration and Shock, 2023, 42(14): 270-277

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