履带拖拉机旋耕机组稳定性仿真分析与试验

针对履带拖拉机旋耕机组在坡道上行驶稳定性问题,利用SolidWorks三维软件建立某型履带拖拉机车体和旋耕机组的三维模型,在多体动力学软件Recurdyn/Track(LM)中建立履带行走装置模型,并建立整机静态稳定性数学模型。针对多体动力学软件Recurdyn/ground模块提供的3种土质路面进行整机稳定性的仿真分析。仿真结果表明,整机在黏土、砂壤土及干沙土最大爬坡角度分别为31°、23°和18°,在黏土、砂壤土的爬坡稳定性高于干沙土;整机在黏土的侧向坡道沿等高线行驶时,土壤附着能力大于砂壤土和干砂土,速度波动最小。最后进行了爬坡稳定性的试验验证。该研究为履带拖拉机旋耕机组行驶稳定性提供重要参考。

Simulation analysis and test on stability of tracked tractor rotary tillage unit

Aiming at the stability of the tracked tractor rotary tiller on the slope, a 3D model of the tracked tractor body and system of rotary tiller was established by using SolidWorks 3D software, the crawler walking device model of the whole machine were built in the multi-body dynamics software Recurdyn/Track (LM), and the mathematical model of the static stability of the whole machine was set up. The simulation analysis of the stability of the whole machine was performed in three soil pavements provided by the multi-body dynamics software Recurdyn/ground module. The simulation results showed that the maximum climbing angle of the whole machine in clay, sandy loam and dry sand was 31°, 23°and 18°, respectively. The climbing stability in the clay and sandy loam soil was higher than in the dry sandy soil. When the machine travelled along the contour line on the side slope of the clay, the soil adhesion capacity was greater than that of the sandy loam and dry sand, and the speed fluctuation was the smallest. Finally, the test verification of the climbing stability was carried out, which can provide an important reference for the driving stability of the tracked tractor rotary tiller.