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研究履带式挖掘机行驶过程中的跑偏及履带系统的受力情况.应用PROE建立挖掘机的主体模型,将其导入到多体动力学软件RecurDyn中,利用RecurDyn建立挖掘机行走履带系统的虚拟样机模型,应Ground模块建立路面横、纵向倾斜模型,仿真研究了挖掘机在复杂路面条件下行驶时履带部张紧油缸的受力、驱动轮的受力与矩特性,以及挖掘机重心的位移、加速度变化情况.仿真结果表明:挖掘机在上、下坡过程中履带各关键部件受力存在一定的冲击,行走时存在着的跑偏现象,路面纵向坡度对跑偏影响较大,横向坡度次之.通过对仿真结果的分析得出加大张紧油缸的预张力能够减小上、下坡过程中跑偏及振动状况.
To study the deviation of the crawler excavator and the stress of the crawler system.Using PROE to build the main body model of the excavator and import it into the multi-body dynamics software RecurDyn, using RecurDyn to establish the virtual of the crawler system In the prototype model, the horizontal and vertical slant pavement models are set up by Ground module. The stress and moment characteristics of the tensioning cylinder, the stress and moment characteristics of crawler belts and the center of gravity of the excavator when the excavator travels under complex road conditions are simulated. , And the change of acceleration.The simulation results show that there is a certain impact on the stress of the key components of the crawler during the uphill and downhill excavation and there is deviation during walking and the longitudinal gradient of the pavement has a greater impact on the deviation and the lateral gradient Secondly.Through the analysis of the simulation results, it is concluded that increasing the pretensioning force of the tensioning cylinder can reduce the deviation and vibration during the uphill and downhill.