| Citation: |
ZHOU Jinbao, XIE Jianhua, CAO Silin, et al. Design and experiment of roll-shaft-type packing device for residual film[J]. Journal of South China Agricultural University, 2024, 45(1): 148-158. DOI: 10.7671/j.issn.1001-411X.202211035
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Aiming at the problems of unclear bale formation mechanism of the existing domestic residual packing device, escape of film residues and high impurity content of film bales during operation, we designed a roll-shaft-type residual film packing device which integrated film cleaning and film baling.
The device was mainly composed of cleaning and conveying mechanism, baling mechanism, transmission system and so on. Through theoretical analysis, we established the mechanical relationship between the cleaning conveyor roller and the residual film, and determined the structural parameters of the cleaning conveyor roller. According to the structural characteristics and operation principle of the cleaning conveyor mechanism, we analyzed and determined the arrangement gap of the cleaning conveyor roller. The mechanism analysis method was used to analyze the force and movement of the residual film during the formation of the residual film core, and determine the movement parameters of the baling roller. The bale formation rate and bale impurity inclusion rate were used as indicators, and the forward speed of the machine, the tilting angle of the film removal conveyor and the baling roller speed were used as test factors for orthogonal tests, and the best combination of parameters was tested in the field.
The main and secondary factors affecting the bale formation rate were the baling roller speed, the tilting angle of the cleaning conveyor and the forward speed of the machine, while the main and secondary factors affecting the bale impurity inclusion rate were the tilting angle of the cleaning conveyor, the forward speed of the machine and the baling roller speed. Using the bale formation rate as the main indicator, the optimum operating parameters were determined as follows: The tilt angle of the cleaning conveyor was 10°, the forward speed of the machine was 1.5 m/s, and the speed of the baling roller was 200 r/min. The bale formation rate in the field verification test was 98.1%, and the bale impurity inclusion rate was 15.2%.
This residual film packing device meets the requirements of field operation and has good operation effect, which can provide references for the design and research of roll-shaft-type residual film packing device.
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