触土曲面内蕴几何量对推土板工作阻力的影响  

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

作　　者：郭志军[1] 邢义胜[1,2] 杜干[3] 张帅[1] 

机构地区：[1]河南科技大学车辆与交通工程学院,洛阳471003 [2]海军试验基地,葫芦岛125000 [3]海军工程大学后勤指挥与工程系,天津300450

出　　处：《农业机械学报》2014年第2期328-333,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(51175150)

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。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.

关 键 词：推土板 触土曲面 工作阻力 微分几何 内蕴几何量 

分 类 号：TH113.2[机械工程—机械设计及理论]