Design and parameter optimization of portable tree transplanting machine
Seedling transplanting plays an important role in urban greening and forest plantation. However, this job is still relying on manual labor in China. There are many disadvantages such as heavy labor intensity, high cost and low survival rate of seedlings in this situation. Thus it is necessary to des...
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| Format: | Article |
| Language: | English |
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Zhejiang University Press
2014-03-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2013.05.301 |
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| author | Zhang Jingping Zhu Jianxi Sun Teng |
| author_facet | Zhang Jingping Zhu Jianxi Sun Teng |
| author_sort | Zhang Jingping |
| collection | DOAJ |
| description | Seedling transplanting plays an important role in urban greening and forest plantation. However, this job is still relying on manual labor in China. There are many disadvantages such as heavy labor intensity, high cost and low survival rate of seedlings in this situation. Thus it is necessary to design a machine that can replace artificial seedling transplant.First, a simple, convenient and reliable portable tree transplanting machine was designed, which mainly included damping handle, gasoline engine, deceleration strip, eccentric vibration device, vibration shovel and so on. When this machine was used to transplant trees, the eccentric block was driven by the gasoline engine through the deceleration strip. Combining this with a vertical vibration and a torsion vibration in a horizontal direction and users' depression, the tree transplanting machine can excavate seedling easily. Furthermore, the format of the vibration shovel was suitable to some different trees whose diameter ranged from 100 mm to 200 mm. Second, in order to increase the machine's working performance, a response surface method was considered to optimize the working parameter of the portable tree transplanting machine. According to the Box-Behnken principles of experimental design, the operating parameters such as eccentric block roller speed, eccentric block mass and linear eccentricity were selected as independent variables, which would influence the time of machine digging down 200 mm. Meanwhile, the software of Design-Expert 7.0.0 was taken to analyze the experimental data, and the quadratic regression mathematical model was established which can expound the relationship between the three operating parameters and response value. The analysis of variance and significance test of the regression coefficients showed that the quadratic regression mathematical model was consistent with the actual situation and also could predict the test results accurately. Lastly, in line with the optimization of the quadratic regression mathematical model, the optimum operating parameter was determined. In order to verify the correctness of the optimum operating parameter, the actual test was taken by the prototype.The results showed that the three operating parameters all strongly influenced extremely the time of digging down 200 mm and the descending order was eccentric block mass, linear eccentricity and eccentric block roller speed. In addition, the interaction of the eccentric block mass and linear eccentricity also influenced extremely the time of digging down 200 mm. Meanwhile, the mathematical model between these three operating parameters and the time of digging down 200 mm was established. The optimal working parameters were eccentric block roller speed of 1 500 r/min, eccentric block mass of 85.47 g, linear eccentricity of 94.67 mm, then the time of digging down 200 mm was 22.07 s, Which is basically matched with the actual result (19.66 s). And the average relative error between the optimization and trials is 10.90%.In conclusion, the optimization experiment improves the machine's operating performance and also provides a preferable reference for the design of the tree transplanting machine. |
| format | Article |
| id | doaj-art-d73af0a8470243308f11f08991e9b04d |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2014-03-01 |
| publisher | Zhejiang University Press |
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| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-d73af0a8470243308f11f08991e9b04d2025-08-20T03:34:05ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552014-03-014023123610.3785/j.issn.1008-9209.2013.05.30110089209Design and parameter optimization of portable tree transplanting machineZhang JingpingZhu JianxiSun TengSeedling transplanting plays an important role in urban greening and forest plantation. However, this job is still relying on manual labor in China. There are many disadvantages such as heavy labor intensity, high cost and low survival rate of seedlings in this situation. Thus it is necessary to design a machine that can replace artificial seedling transplant.First, a simple, convenient and reliable portable tree transplanting machine was designed, which mainly included damping handle, gasoline engine, deceleration strip, eccentric vibration device, vibration shovel and so on. When this machine was used to transplant trees, the eccentric block was driven by the gasoline engine through the deceleration strip. Combining this with a vertical vibration and a torsion vibration in a horizontal direction and users' depression, the tree transplanting machine can excavate seedling easily. Furthermore, the format of the vibration shovel was suitable to some different trees whose diameter ranged from 100 mm to 200 mm. Second, in order to increase the machine's working performance, a response surface method was considered to optimize the working parameter of the portable tree transplanting machine. According to the Box-Behnken principles of experimental design, the operating parameters such as eccentric block roller speed, eccentric block mass and linear eccentricity were selected as independent variables, which would influence the time of machine digging down 200 mm. Meanwhile, the software of Design-Expert 7.0.0 was taken to analyze the experimental data, and the quadratic regression mathematical model was established which can expound the relationship between the three operating parameters and response value. The analysis of variance and significance test of the regression coefficients showed that the quadratic regression mathematical model was consistent with the actual situation and also could predict the test results accurately. Lastly, in line with the optimization of the quadratic regression mathematical model, the optimum operating parameter was determined. In order to verify the correctness of the optimum operating parameter, the actual test was taken by the prototype.The results showed that the three operating parameters all strongly influenced extremely the time of digging down 200 mm and the descending order was eccentric block mass, linear eccentricity and eccentric block roller speed. In addition, the interaction of the eccentric block mass and linear eccentricity also influenced extremely the time of digging down 200 mm. Meanwhile, the mathematical model between these three operating parameters and the time of digging down 200 mm was established. The optimal working parameters were eccentric block roller speed of 1 500 r/min, eccentric block mass of 85.47 g, linear eccentricity of 94.67 mm, then the time of digging down 200 mm was 22.07 s, Which is basically matched with the actual result (19.66 s). And the average relative error between the optimization and trials is 10.90%.In conclusion, the optimization experiment improves the machine's operating performance and also provides a preferable reference for the design of the tree transplanting machine.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2013.05.301farm machinetree transplanting machineresponse surface methodparameter optimization |
| spellingShingle | Zhang Jingping Zhu Jianxi Sun Teng Design and parameter optimization of portable tree transplanting machine 浙江大学学报. 农业与生命科学版 farm machine tree transplanting machine response surface method parameter optimization |
| title | Design and parameter optimization of portable tree transplanting machine |
| title_full | Design and parameter optimization of portable tree transplanting machine |
| title_fullStr | Design and parameter optimization of portable tree transplanting machine |
| title_full_unstemmed | Design and parameter optimization of portable tree transplanting machine |
| title_short | Design and parameter optimization of portable tree transplanting machine |
| title_sort | design and parameter optimization of portable tree transplanting machine |
| topic | farm machine tree transplanting machine response surface method parameter optimization |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2013.05.301 |
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