Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (4): 1220-1230.doi: 10.13229/j.cnki.jdxbgxb.20210788

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Design and test of the remaining film picking and baling machine

Xue-jun ZHANG1,2(),Shuang HUANG1,Zeng-lu SHI1,2,Yong-liang YU3,Xin-cheng ZHOU1,Wei JIN1,2,Yong CHEN1,Jia HONG1   

  1. 1.College of Mechanical and Electrical Engineering,Xinjiang Agricultural University,Urumqi 830052,China
    2.Key Laboratory of Innovation Design laboratory,Xinjiang Agricultural Engineering Equipment,Urumqi 830052,China
    3.Xinjiang Tiancheng Agricultural Machinery Manufacturing Co. Ltd. ,Tiemenguan 841007,China
  • Received:2021-08-16 Online:2023-04-01 Published:2023-04-20

Abstract:

In order to reduce the secondary pollution during the recovery of residual film in farmland, reduce the cost of storage and transportation of residual film, and realize the standardized management of residual film scrap in farmland, a mechanism for picking up and packing residual film has been designed and developed. The mechanism was mainly composed of transmission system, picking mechanism, scraper type film unloading mechanism, packing mechanism. Through the analysis of the residual film pick-up process and force, the installation angle of the arc nail teeth and the speed range of the pickup roller under the current working conditions were determined; the film scraping process of the scraper type film unloading mechanism was analyzed, and it was clear that the angular velocity range of the scraper film unloading mechanism; the three stages including horizontal conveying, climbing and throwing back formed by the film core of the residual film packing device were studied, the force during the movement was analyzed, it was determined that the main factors contributing to the formation of the film core were the thrust of the subsequent residual film and the frictional guiding force between the steel roller and the residual film. Three factors were taken as test factors: the machine forward speed, pickup roller speed, and steel roller speed. The residual film pick-up rate and the bundle rate were tested by orthogonal experiments. The primary and secondary order of factors affecting the residual film pick-up rate and the bundle rate was obtained as follows: Machine advancement speed>roller speed>baling steel roller speed, under the premise of ensuring the pick-up rate of residual film, the baling rate was maximized. The optimal working parameters of the residual film pick-up baler were determined: The speed of machine advancement was 4 km/h, the speed of the pickup roller was 60 r/min, and the speed of the steel roller was 300 r/min. Taking better working parameters to carry out field verification tests, the residual film pick-up rate and bundle rate were 90.3% and 98.4%, respectively. The residual film pick-up baler ran smoothly and reliably, with low failure rate, and had high use and promotion value.

Key words: agricultural machinery, recycling of residual film, telescopic pick-up, round bale, pack

CLC Number: 

  • S223.5

Fig.1

Overall structure of residual film picking and packing machine"

Table 1

Main parameters of residual film picking and strapping machine"

参 数数 值
整机尺寸/(mm×mm×mm)3120×2140×2125
配套动力/kW≥55
捡拾滚筒转速/(r·min-160
钢辊转速/(r·min-1300

Fig.2

Structure diawing of picking mechanism"

Fig.3

Nail tooth picking device assembly"

Fig.4

Force analysis of picking up residual film"

Fig.5

Analysis of pickup tooth movement"

Fig.6

Motion analysis of film scraping process"

Fig.7

Schematic diagram of packing device structure"

Fig.8

Motion analysis of film core packing process"

Fig.9

Schematic diagram of transmission system structure"

Fig.10

Field experiment"

Table 2

Test factors and levels"

水平机具前进速度A/(km·h-1

捡拾滚筒转速

B/(r·min-1

钢辊转速

C/(r·min-1

1350280
2460300
3570320

Table 3

Test plan and results"

试验号试验因素残膜捡拾率/%成捆率/%
ABC空列
1111186.894.5
2122287.696.4
3133386.695.1
4212388.597.8
5223189.898.1
6231289.497.2
7313281.495.6
8321384.596.4
9332182.396.2
k1187.00085.56786.90086.300
k1289.23387.30086.13386.133
k1382.73386.10085.93386.533
R16.5001.7330.9670.400
主次顺序:A>B>C
k2195.33395.96796.03396.267
k2297.70096.96796.80096.400
k2396.06796.16796.26796.433
R22.3671.0000.7670.166
主次顺序:A>B>C

Table 4

Variance analysis"

指标方差来源平方和自由度均方F显著性
捡拾率A65.442232.721270.421***
B4.72922.36519.541**
C1.56220.7816.455
e0.24220.121
总和71.9758
成捆率A8.80724.404187.383***
B1.68020.84035.745**
C0.92720.46419.723**
e0.04720.024
总和11.4618

Table 5

Experiment verification results"

试验号及平均值捡拾率/%成捆率/%
189.198.1
290.498.3
391.398.8
平均值90.398.4
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