In order to meet the diversified testing requirements and to improve the interchangeability, generality and measurement accuracy, a test device was designed for rotary tillage components based on soil bin. The test bed structure design and the measurement system were introduced in the paper. The working principle of bridge system for strain measuring system was expounded emphatically. The working process and load variation of rollers were analyzed and the test indexes for load characteristic of working parts were designed. The MATLAB program was used and verified to collect the test signal and analyze the data. The results showed that the strain measuring system worked reliably and the linear factor was 1; the test device could effectually reflect the working load characteristic and meet the experimental requirements of rotary tillage components well.%为满足旋转耕作部件多样化的试验要求和提高试验装置的互换性、通用性与测量精度,基于土槽试验台设计了旋转耕作部件试验装置.介绍了试验装置中试验台的结构设计和测试系统的组成,重点阐述了桥式应变测试系统的工作原理.分析了刀辊作业过程以及刀辊负荷,确定了试验指标,编制了用于应变测试信号采集和数据分析的MATLAB程序,并进行了验证试验.试验结果表明:应变测试系统测量精确,线性系数近似为1；试验装置能够有效的反映旋转耕作部件的周期性负荷特性,满足旋转耕作部件试验要求.
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