关键词: 残膜回收机, 捡拾齿, 模型, 运动特性

Abstract: In order to better solve the problem of broken residual film recycling and separation between residual film and stubble, soil, this paper optimized the design of pick-up teeth and drum through theoretical analysis and experiment. According to the working principle and assignment requirement of the residual film recycling machine, and the motion characteristics of pick-up teeth analyzed by motion simulation Adams software, this paper optimized the structure and parameter of key working parts of pick-up teeth and roller; established motion equation for pick-up teeth and roller; and obtained the factors and levels affecting the collecting rate and discharge rate of membrane, and the optimal level of factors combination, through orthogonal test of collecting rate and discharge rate and variance analysis. Experiment results showed that recycling ratio was the best when roller rotation speed was 120 r/min, depth of pick-up teeth buried was 80 mm, axial distance was 110 mm, number of circumference was 16. And film removing ratio was maximum when speed of unloading film roll was 400 r/min, radius was 300 mm. It has been verified by field experiment: the machine need not to be stopped to discharg membrane, and realized unloading membrane automatically, with recycling ratio 89.0% and film removing ratio 95.4%. These results have provided a theoretical basis for studying new type residual film recycling machine.

Key words: film recycling machine, pick-up teeth, model, movement characteristics