天然草场改良用振动式间隔松土机作业机理

为了提升草地振动式间隔松土机的作业性能，需要对机具的作业机理进行研究。通过对机具的工作单体进行运动仿真分析，探讨了松土部件在强迫振动作用下对草耕层土壤的破碎机理。通过分析得出松土部件的工作过程为切削土壤和抛起土壤两个交替作用的阶段，在松土作业过程中，松土部件既有挤压松土又有振动松土，土垡因受剪切、弯曲和拉伸等作用得到松碎，松土部件产生与松土铲切削方向呈一定角度的振动有利于土壤疏松和降低机具的牵引阻力。

Working mechanism of vibration spacing scarifier for grassland

In order to improve the performance of the vibration spacing scarifier for grassland, the working mechanism of the equipment should be studied. The crushing mechanism under the forced oscillation of the scarifier part was discussed in the paper by carrying out the motion simulation analysis to the single set of working parts of the equipment. The working process could be divided into two alternating actions, the soil-cutting action and the soil-throwing action. Both extrusion and vibration loosen effects were achieved during the process, which the soil mattress were loosened by the cutting, bending and stretching force. The direction of the excitation and the cutting blade had a certain angle, which helped to reduce the traction resistance and had a better effect on the soil loosen.