触土曲面内蕴几何量对推土板工作阻力的影响
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国家自然科学基金资助项目(51175150)


Influence of Intrinsic Geometrical Quantity of Soil-engaging Surface on Working Resistance of Bulldozing Plate
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    摘要:

    设计了宏观触土曲面准线为圆弧、抛物线和仿生曲线的推土板。通过室内土槽试验测试了3种推土板的工作阻力。建立了3种推土板宏观触土曲面的参数方程,并完成了3种触土曲面第一类基本量E、F和G,曲面第二类基本量L、M和N内蕴几何量计算。得知第一类基本量中的E值和第二类基本量中L值是影响触土曲面工作阻力的重要因素。仿生曲线式推土板触土曲面E值和L值具有较复杂变化趋势,也相应获得了较低的工作阻力。圆弧式推土板则具有相对较大的工作阻力。

    Abstract:

    The intrinsic geometrical quantity of macroscopic soil-engaging surface of bulldozing plate plays a decisive role for its geometrical and dynamic characteristics. Three forms of macroscopic soil-engaging surfaces with the arc, parabola and bionic curve were designed and manufactured. The working resistance was measured with a laboratory soil bin. The intrinsic geometrical quantities of the macroscopic soil-engaging, including the first base quantity (E, F, G) and the second base quantity (L, M, N), were calculated based on the parametric equations of the three macroscopic soil-engaging surfaces. It was discovered that E value in the first class of the base quantity and the value of L in the second class of the base quantity were important factors influencing the working resistances of soil-engaging surfaces. The value of E and L of the bionic soil-engaging surface possessed more complex trend, also obtained lower working resistance accordingly. However, the relatively simple arc bulldozing plate had a relatively large working resistance.

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郭志军,邢义胜,杜 干,张 帅.触土曲面内蕴几何量对推土板工作阻力的影响[J].农业机械学报,2014,45(2):328-333. Guo Zhijun, Xing Yisheng, Du Gan, Zhang Shuai. Influence of Intrinsic Geometrical Quantity of Soil-engaging Surface on Working Resistance of Bulldozing Plate[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(2):328-333.

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  • 收稿日期:2013-01-03
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  • 在线发布日期: 2014-02-10
  • 出版日期: 2014-02-10