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为了更好地解决破碎残膜难以回收以及残膜和土壤、根茬分离的问题,通过理论分析和试验对捡拾齿和滚筒进行优化设计。依据自动卸膜式残膜回收机的工作原理与作业要求,基于Adams运动仿真软件分析捡拾齿的运动特性,优化关键工作部件捡拾齿和滚筒的结构与参数,建立捡拾齿和滚筒的运动方程。通过捡拾率和卸膜率的正交试验和方差分析,确定影响捡拾率和卸膜率的因素和水平以及较优因素水平组合。试验结果表明,在滚筒直径800 mm,转动速度120 r/min,捡拾齿入土深度80 mm,轴向距离110 mm及周向个数为16的条件下,捡拾率最高;在卸膜辊转动速度为400 r/min及半径300 mm的条件下,卸膜率最高。该残膜回收机实现自动卸膜,不需停机卸膜,捡拾率达到89%,卸膜率达到95.4%,为新型残膜回收机的研究提供依据。
In order to solve the problem that the broken film is hard to be recovered and the residual film and the soil and root stubble are separated, the optimal design of picking tooth and roller is theoretically analyzed and tested. According to the working principle and operation requirements of automatic unloading film type residual film recovery machine, based on Adams kinematic simulation software, the movement characteristics of picker teeth are analyzed, the structure and parameters of picker and drum are optimized, and the equations of motion of picker and drum are established. Through the orthogonal test and variance analysis of the pick-up rate and unloading rate, the factors and levels that affect the pick-up rate and discharge rate and the combination of the optimal factors were determined. The test results show that the pick-up rate is the highest under the conditions of a cylinder diameter of 800 mm, a rotational speed of 120 r / min, a pick-in tooth depth of 80 mm, an axial distance of 110 mm and a circumferential number of 16; For the 400 r / min and radius of 300 mm conditions, the highest rate of unloading. The residual film recovery machine to achieve automatic unloading film, without stopping the unloading film, pick up rate reached 89%, the unloading rate of 95.4%, for the new type of residual film recovery machine to provide the basis for the study.