首页 | 本学科首页   官方微博 | 高级检索  
     检索      

受迫振动深松机性能参数优化与试验
引用本文:李霞,张东兴,王维新,崔涛,汤明军.受迫振动深松机性能参数优化与试验[J].农业工程学报,2015,31(21):17-24.
作者姓名:李霞  张东兴  王维新  崔涛  汤明军
作者单位:1. 石河子大学机械电气工程学院,石河子 832000;,2. 中国农业大学工学院,北京 100083;,1. 石河子大学机械电气工程学院,石河子 832000;,2. 中国农业大学工学院,北京 100083;,1. 石河子大学机械电气工程学院,石河子 832000;
基金项目:国家自然科学基金资助项目(5136505);现代农业产业技术体系建设项目-玉米-夏播区生产全程机械化(CARS-02);新疆兵团科技人员服务南疆专项(2014BA058);石河子大学高层次人才启动项目(RCZX201307).
摘    要:为解决目前深松作业机具耕作阻力大、深松深度不稳定、耕作质量不高的问题,该文采用振动减阻原理设计研制了受迫振动深松机。通过分析深松铲的结构和运动过程,建立深松铲的数学模型;确定影响深松牵引阻力的参数;采用正交试验方法得出影响受迫振动参数的最优组合:前进速度2 km/h,振动频率为10 Hz,振动角度为12°。为了验证性能参数最优组合的正确性,开展了受迫振动深松机性能参数检测试验。试验结果表明:振动深松前后,土壤各土层容重均下降,表层土下降达21.74%;在15~25 cm土层含水率增加16.02%;深松后地表平整,耕深稳定变异系数为7.37%,稳定性系数92.63%,振动深松作业后测得土壤扰动系数为57.11%,土壤蓬松度为36.96%,土壤蓬松度和扰动系数均达测试指标的要求。采用受迫振动能使振动深松机显著降低牵引阻力9.09%,减阻效果明显。该研究对深松机振动特性分析与性能参数设计提供了参考。

关 键 词:农业机械  振动  优化  深松机  减阻  性能参数
收稿时间:2015/4/17 0:00:00
修稿时间:2015/9/30 0:00:00

Performance parameter optimization and experiment of forced-vibration subsoiler
Li Xi,Zhang Dongxing,Wang Weixin,Cui Tao and Tang Mingjun.Performance parameter optimization and experiment of forced-vibration subsoiler[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(21):17-24.
Authors:Li Xi  Zhang Dongxing  Wang Weixin  Cui Tao and Tang Mingjun
Institution:1. College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China,2. College of Engineering, China Agricultural University, Beijing 100083, China,1. College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China,2. College of Engineering, China Agricultural University, Beijing 100083, China and 1. College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832000, China
Abstract:Abstract: In order to solve the problem of high traction resistance of the traditional subsoiler, a forced-vibration subsoiler was designed and developed. This paper introduced the structure and described the working principle of this forced-vibration subsoiler. What was more, the motion process of the vibrating deep loosening shovels was analyzed and the motion equation of the shovel point was established. Type of forward velocity, vibration frequency and vibration angle were selected as 3 factors of the orthogonal simulation experiment to evaluate their effects on traction resistance, total power and torque in the soil-bin experiment. The sequence of factors in affecting the traction resistance was vibration frequency > forward velocity> vibration angle. The traction resistance was reported to increase consistently with the increasing of forward velocity. The sequence of factors in affecting the total power was forward velocity > vibration frequency > vibration angle, and the total power values firstly increased and then decreased with the increasing of vibration frequency while the total power values firstly decreased and then increased with the increasing of vibration angle. The sequence of factors in affecting the torque was vibration frequency > forward velocity > vibration angle, and the torque values firstly increased and then decreased with the increasing of forward velocity while the torque values consistently increased with the increasing of vibration frequency. The optimal combination of the performance parameters was the forward velocity of 2 km/h, the vibration frequency of 10Hz and the vibration angle of 12°. For further validating the rationality of optimal combination of parameters, the test on working performance of the forced-vibration subsoiler was carried out in the experimental field, and soil properties (bulk density and water content), soil bulkiness, soil disturbance coefficient and traction resistance were selected as the evaluation indicators to compare with non-vibration subsoiler. The results showed that the bulk density of all soil layer decreased after forced-vibration sub-soiling and that at 0-15 cm soil layer decreased by 21.74%. At the same time, the water content at 15-25 cm increased by 16.02%. The variation coefficient and stability coefficient of sub-soiling depth, which were the indicators to the change quantity and degree, were 7.37% and 92.63% respectively. Meanwhile, the variation coefficient and stability coefficient of the depth reached the requirements of the Ministry of Agriculture, and the land surface was smooth and flat after sub-soiling. Moreover, soil disturbance coefficient was 57.11% after subsoiling and soil bulkiness was 36.96%. Both soil bulkiness and disturbance coefficient reached the requirements of the test indicators. In addition, the traction resistance was reduced by 9.09% compared with non-vibrating subsoiler, so the effect of reducing traction resistance was obvious. These results provide a reference for further optimization of the mechanical structure and improving dynamic and economic performance of the whole machine.
Keywords:agricultural machinery  vibrations  optimization  subsoiler  resistance reduction  performance parameter
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《农业工程学报》浏览原始摘要信息
点击此处可从《农业工程学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号