履带式大豆联合收获机振动测试与分析  

Vibration Measurement and Analysis of Tracked Soybean Combine Harvester

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作  者:解鸿儒 金诚谦 印祥 钱震杰 滕悦江 于晨曦 Xie Hongru;Jin Chengqian;Yin Xiang;Qian Zhenjie;Teng Yuejiang;Yu Chenxi;School of Agricultural Engineering and Food Science,Shandong University of Technology;Nanjing Research Institute of Agricultural Mechanization,Ministry of Agriculture

机构地区:山东理工大学农业工程与食品科学学院 农业部南京农业机械化研究所

出  处:《农机化研究》2019年第8期158-163,174共7页Journal of Agricultural Mechanization Research

基  金:中央引导地方科技发展专项基金项目(2016-2018);山东省高等学校优势学科人才团队培育计划项目(2016-2020);国家重点研发计划项目(2106YFD0702003);现代农业产业技术体系建设专项资金项目(CARS-04-PS26);国家自然科学基金项目(11602120);中央级科研院所基本科研业务费专项(S201812)

摘  要:为研究履带式大豆联合收获机在不同工况下的整机振动特性,以久保田4LZ-2. 5履带式联合收获机为研究对象,选取了收获机在发动机怠速空转、整机空转及田间收获作业等5种工作状态,利用DH5902动态信号采集分析系统对切割器、发动机及脱粒滚筒等6个振动较强的位置进行测试,获取其振动特性。试验结果表明:切割器左右运动、脱粒滚筒的旋转和振动筛的前后运动是引起联合收获机的主要因素;发动机和风机的运转是联合收获机振动的次要因素。联合收获机空载时,振动最强的位置是切割器,振幅有效值达到了31. 84m/s~2;田间收获时切割器附近振幅比空载时降低,其他测点振幅都不同程度增加,脱粒滚筒处振幅有效值最大,达到43. 74 m/s~2。发动机的运转对驾驶座垂直方向上的振动影响最强,需进一步优化驾驶座的减振系统。研究结果可为收获机减振设计、结构优化及各部件的模态分析提供参考。In order to study the vibration characteristics of tracked soybean combine harvester under different working conditions,taking Kubota 4 LZ-2. 5 combine harvester as the research object,selecting five working states of the harvester,such as engine idling,machine idling,field harvesting and so on. Using DH5902 dynamic signal acquisition and analysis system to measure six vibrational positions such as cutter,engine,etc. The experimental results show that the movement of the cutter,the rotation of the threshing cylinder and the front and rear motion of the vibrating screen are the main factors that cause the combine harvester vibration. When the machine is idle,the strongest vibration is the cutter,and the amplitude effective value is 31. 84 m/s~2; when the harvester is working in the field,the amplitude near the cutter is lower than that at the time of carrying idler,the amplitudes of other measurements increased to varying degrees,the amplitude of threshing drum is the largest,reaching 43. 74 m/s~2. The engine operation has the strongest influence on the vertical vibration of the driver seat,so the vibration absorption system of the driver seat should be further optimized.The results can be used as reference for vibration absorption design,structural optimization and modal analysis of various components.

关 键 词:大豆 联合收获机 振动测试 履带式 

分 类 号:S225[农业科学—农业机械化工程;农业科学—农业工程]

 

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