蓄能器参数对砍蔗-切段负载敏感系统液压冲击的影响研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (14) : 270-277.

论文

陈远玲，陈承宗，彭卓，陈浩楠，王梦乔，石浩

作者信息 +

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

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

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文章历史 +

摘要

甘蔗机械化收割过程中振幅波动大的载荷，以及对多路换向阀的频繁操纵都会产生较大的液压冲击。本文以甘蔗联合收割机的砍蔗-切段负载敏感系统为研究对象，提出在泵的出口处增加蓄能器以抑制液压冲击。以蔗地实测载荷数据为基础，基于AMESim建立砍蔗-切段负载敏感系统仿真模型，研究蓄能器参数对砍蔗-切段负载敏感系统液压冲击的影响规律及优化匹配方法，并对仿真结果进行实验验证。研究结果表明：蓄能器的预充气压力越接近工作压力，压力冲击抑制效果越好，压力响应速度也越快，蓄能器的预充气压力最优区间为系统正常工作压力的50%-83%。

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.

导出引用

陈远玲，陈承宗，彭卓，陈浩楠，王梦乔，石浩. 蓄能器参数对砍蔗-切段负载敏感系统液压冲击的影响研究[J]. 振动与冲击, 2023, 42(14): 270-277

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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