Abstract:Aiming at the problems of low operating efficiency and insufficient residual film recovery rate of the existing traction residual film recycler, as well as the poor separation effect of membrane impurities due to the dispersed function of the film collecting system and the weak adaptability to the complex working conditions in the field, a self-propelled residual film recycler was developed, focusing on the design of the integrated film collecting-membrane impurity separation. A self-propelled film recycling machine was developed, focusing on the design of the integrated "film collection - film separation - film transport - film removal" function in one of the spiked belt film collection system. Combined with the agronomic requirements of Xinjiang cotton fields and the analysis of mechanical characteristics of residual film gripping, the staggered arrangement parameters of the film harvesting spike teeth and the key structural dimensions of the main stripping drive roller were determined;the dynamic model of the film-collecting belt system was constructed based on the ADAMS software, and the transverse deviation of the belt joints and fluctuating characteristics of the tension were analyzed within the range of the system's rotation speed of 118 ~ 158 r/min. The simulation results showed that in this speed range, the lateral offset of the belt segments was no more than 4 mm, and the fluctuation of tension force was controlled within ±15%, which verified the dynamic stability of the transmission system. Taking the forward speed of the implement, the speed of the film-retracting roller and the inclination angle of the belt as the test factors, the Box - Benhnken experimental design method was used to carry out the field test, and the optimal combination of operating parameters was obtained by using the response surface method of optimization: the forward speed was 8 km/h, the speed of the film-retracting roller was 138 r/min, and the inclination angle of the belt was 89°. The results of the validation test showed that the residual film recovery rate reached 91.17% under the parameter conditions. The research result can provide a theoretical basis and technical support for the optimal design of the film collection system of self-propelled residual film recycling equipment and the efficient operation on a large scale.
