旋耕机三点悬挂机具调平机构的研制与试验

Design and test on the leveling mechanism of three point linkage for rotary tiller

为了使拖拉机旋耕机具在田间作业时保持平稳并实现耕深一致性,为1GDZ–150型履带式旋耕机三点悬挂装置研制了调平机构。该机构由杠杆机械部分、液压系统和倾角信号采集装置组成。机具作业时,倾角传感器实时检测其倾角,采用复合数字滤波算法组合对倾角数据进行滤波处理,同步液压缸通过杠杆机构以中心不动调平法调节机具的倾角以实现调平。试验结果表明,该调平机构作业时,耕深均值为11.34 cm,旋耕机具的耕深稳定性变异系数为3.7%,能够较好地完成调平作业。

In order to keep the rotary tiller tilling stable with a depth consistency in field operation, a leveling mechanism is designed and test for 1 GDZ-150 crawler rotary tiller. The leveling mechanism is composed of a leverage mechanical part, a hydraulic system and an angle signal collecting device. When the rotary tiller is operating, the angle sensors detect the real-time angle and collect the data, which is filtered by using a combinational digital filtering algorithm. The synchronous hydraulic cylinder drives the lever mechanism to adjust the tiller＇s angle and achieve leveling by a center fixed leveling method. The test results show that the leveling mechanism is working effectively and making the tiller cultivating on average deep of 11.34 cm with a variable coefficient of 3.7% for the tillage depth.