关键词: 巨菌草扦插机, 五连杆扦插机构, 鸭嘴机构, 回归试验

Abstract: In order to improve the cutting qualification rate of the Pennisetum giganteum transplanter, the fivelink cutting mechanism of the cuttings machine was optimized. At the same time, to address the soil characteristics of southern Xinjiang, the platypus mechanism of cuttings was optimized and improved using Matlab software to improve the qualification rate of cuttings machines in southern Xinjiang. EDEM and ANSYS softwares were used to simulate the loads on soil from cuttings duckbill. Then, Design Expert software was used to perform regression analysis on the three parameters of cuttings frequency, cuttings depth, and soil moisture. A regression model was established, and the regression equation between the test factors and the test index was obtained through the regression test. The best values of these three factors were selected based on actual circumstances: the cutting frequency of the cuttings machine was 51 plants/min, the cutting depth was 50 mm, and the soil moisture was 45%. The test results showed that the qualified rate of cuttings of the optimized Pennisetum giganteum transplanter reached more than 87.5%, with an average cutting qualification rate of 92%, meeting the requirements of largescale promotion of mechanized planting in southern Xinjiang.

Key words: Pennisetum giganteum transplanter, fiverod cutting mechanism, duck beak mechanism, regression test