立式螺旋开沟器土槽试验装置

Soil-bin test device of vertical spiral opener

为了研究立式螺旋开沟器在不同前进速度、转速、开沟深度以及开沟角度组合工况下进行作业的功率消耗情况,设计了一套试验装置.该装置以上位机和数据采集卡为控制系统核心,利用LabVIEW编写的测控软件实现了开沟器转速、转矩等参数的采集、显示以及土壤切削功耗的处理和分析,以获得不同前进速度、转速、开沟深度以及开沟角度组合作用下土壤功耗的变化情况.利用该试验装置在转速为250 r/min,开沟角度为0°,开沟深度为250 mm的情况下,进行了前进速度分别为3,4,5 m/min的单因素土壤切削试验,并将试验参数代入切削功耗的理论计算公式中,从而对试验结果加以计算验证.单因素试验结果表明:该装置能模拟开沟器在不同前进速度、转速、开沟深度以及开沟角度组合作用下的土壤切削全过程,并且以前进速度为单因素变量的试验测得的土壤切削功耗与理论计算的最大误差为11.05%.

In order to study the power consumption under different combinations of forward speed, rotational speed, opening furrow angle and depth of furrow, a kind of soil-bin test device of vertical spiral opener was introduced for the soil-bin experimental test. With computer and acquisition cards as control center, a measurement and control software were programmed based on LabVIEW to collect, display and analyze the data of motional parameters such as rotational speed, torque and power consumption, et al. The device were tested in the soil-bin under the experimental conditions considering 250 r/min as rotational speed, 0° as the opening furrow angle, 250 mm as the depth of furrow, and 3 m/min, 4 m/min, 5 m/min as the forward speed respectively. The cutting power consumption obtained by theoretical model can be used to validate the experimental results. The test results show that the device can simulate the whole process of the vertical spiral opener cutting the soil, and the maximum error between calculated and experimental values is 11.05%.