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      2. 懸掛裝置參數對拖拉機振動特性的影響
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        國家重點研發計劃(2017YFD0700104B)


        Effects of suspension parameters on vibration characteristics of tractor
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          摘要:

          為研究不同農具位置對懸掛農具拖拉機振動特性的影響,以東方紅-LX754拖拉機和淮豐1LS-740深松機為研究對象,采用CATIA軟件建立拖拉機和農具簡化的幾何模型以及MATLAB編寫隨機路面文件,并基于ADAMS軟件修改輪胎參數文本和導入隨機路面激勵文件,構建深松機-拖拉機-路面系統的虛擬樣機。通過仿真研究懸掛裝置參數對拖拉機駕駛員垂向振動加速度、座椅安裝處俯仰振動角加速度、拖拉機質心垂向振動加速度的影響。結果發現,內提升臂與水平方向的夾角從20°增大到70°時,駕駛員垂直振動加速度峰值從30.09 m/s2降低到17.61 m/s2,垂直振動峰值頻率從1.36 Hz增大到2.12 Hz,座椅安裝處俯仰振動角加速度峰值從11.12 rad/s降低到7.56 rad/s,拖拉機質心垂直振動加速度峰值從42.42 m/s2降低到29.33 m/s2。

          Abstract:

          Dongfanghong-LX754 tractor and Huaifeng1LS-740 subsoiler were used to study the effects of different positions of farm tools on the vibration characteristics of tractor with suspended farm tools. CATIA software was used to establish simplified geometric model of tractor and farm tools. MATLAB was used to write random road surface file,which was imported into ADAMS to write tire property file and establish the mechanical system model of farm tool,tractor and road surface. Effects of the parameters of the suspension device on the vertical vibration acceleration of the driver,the pitch vibration angular acceleration at the seat installation and the vertical vibration acceleration of the tractor body were obtained by simulation. The results showed that when the angle between the inner lifting arm and the horizontal direction increased from 20° to 70°,the driver acceleration peak value reduced to 17.61 from 30.09 m/s2. The peak frequency of vertical vibration increased from 1.36 to 2.12 Hz. Seat installed in longitudinal vibration angular acceleration peak value reduced to 7.56 from 11.12 rad/s2. Tractor barycenter vertical vibration acceleration peak value reduced to 29.33 from 42.42 m/s2. It will provide an important reference for designing vibration damping system of tractor.

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        倪偉強,江慶,許良元,張興局,蔣冬冬.懸掛裝置參數對拖拉機振動特性的影響[J].華中農業大學學報,2020,39(4):175-181

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        • 收稿日期:2019-06-05
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        • 在線發布日期: 2020-07-30
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