论文部分内容阅读
分析了拖拉机悬挂犁耕机组作业时悬挂杆件的受力,分别得到上拉杆阻力传感、下拉杆测力销阻力传感和下拉杆摆臂式阻力传感3种阻力传感机构的传感信号误差表达式,并以3种不同功率拖拉机犁耕机组为例,计算得到不同阻力传感机构应用在不同功率机组情况下的绝对误差和相对误差。由不同土壤比阻和不同耕深的算例计算结果发现,下拉杆阻力传感方案的绝对误差小于上拉杆传感方案,大功率拖拉机悬挂系统应该采用下拉杆阻力机构,以实现提高阻力调节质量,稳定机组牵引负荷的目的。
The force of suspending rods during the operation of the tractor suspended plow unit was analyzed and the sensitivities of the three resistance sensing mechanisms of the pull rod resistance sensing, the lower rod force measuring pin resistance sensing and the lower rod swinging arm resistance sensing were respectively obtained Signal error expression, and taking three kinds of plow cultivators with different power tractors as examples, the absolute error and the relative error of different resistance sensing institutions applied in different power units are calculated. The calculation results of different soil resistivity and different depth of field show that the absolute error of the sensing scheme of the pull-down bar resistance is smaller than the sensing scheme of the pull-up bar, and the pull-down bar resistance mechanism should be adopted in the high-power tractor suspension system in order to improve the resistance adjustment quality , The purpose of stabilizing unit traction load.