悬挂农具对拖拉机转向乘坐舒适性的影响

以某型拖拉机和深松机为研究对象,在UG中建立拖拉机和农具的三维模型并导入ADAMS中,建立人-机-路面的虚拟样机模型,对农具质量和悬挂位置在拖拉机转向过程中驾驶员乘坐舒适性的影响进行了研究.结果表明:在拖拉机空载和悬挂农具质量为300 kg、600 kg和900 kg的情况下,拖拉机驾驶员的联合加权加速度均方根值为0.434、0.474、0.566和0.629 m·s-2;在拖拉机悬挂农具内提升臂和水平方向夹角从20°提升到45°、70 °的情况下,拖拉机驾驶员的联合加权加速度均方根值为0.710、0.629和0.558 m·s-2,悬挂农具的质量越大,农具的悬挂角度越小,驾驶员的联合加权加速度均方根值越大,驾驶员越不舒服.该研究为后期的拖拉机的减振设计提供了重要参考.

Influence of hanging farm tools on riding comfort of tractor steering

In this paper, taking the tractor and deep loosening machine as the research object, the model of tractor and farm tool were established in UG and imported into ADAMS, and the virtual prototype model of a driver - tractor - road surface was established in ADAMS. The influence of the mass of farm tools and the angle of suspension on the driver''s riding comfort in the process of tractor steering was studied. When the tractor was unloaded and the hanging farm tool was 300 kg, 600 kg and 900 kg, the RMS of the joint weighted acceleration of the tractor driver was 0.434, 0.474, 0.566 and 0.629 m·s^-2. When the angle between the lifting arm and the horizontal direction of the tractor hanging farm tool increases from 20° to 45° and 70°, the RMS of the weighted joint acceleration of the tractor driver was 0.710, 0.629 and 0.558 m·s^-2. The results showed that, the greater the mass of the hanging farm tools, the smaller the hanging angle of the farm tool, the larger RMS of the joint weighted acceleration of the tractor driver, the more uncomfortable for the driver. This study provides an important reference for the vibration reduction design of tractors in the later stage.