Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter
To avoid the issues of undesired soil compaction and seeding depth variation caused by the downforce fluctuation of the corn no-till planter, the influence of the structural parameters of the air spring on the downforce was researched in this paper, by establishing the gas–solid coupling simulation...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Agriculture |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0472/12/10/1513 |
| _version_ | 1797476364393119744 |
|---|---|
| author | Xinpeng Cao Qingjie Wang Dijuan Xu Shenghai Huang Xiuhong Wang Longbao Wang |
| author_facet | Xinpeng Cao Qingjie Wang Dijuan Xu Shenghai Huang Xiuhong Wang Longbao Wang |
| author_sort | Xinpeng Cao |
| collection | DOAJ |
| description | To avoid the issues of undesired soil compaction and seeding depth variation caused by the downforce fluctuation of the corn no-till planter, the influence of the structural parameters of the air spring on the downforce was researched in this paper, by establishing the gas–solid coupling simulation model of the air spring. The downforce test bench was built to verify the simulation model; the test showed that the vertical output force error of the simulation model was 4.79%, the pitch diameter error was 0.76%, and the pressure error was 5.07%. The cord angle, piston angle and piston diameter were used as influencing factors to carry out single-factor experiments. The influences of structural parameters on downforce were analyzed from four aspects: the vertical output force, the vertical stiffness, the pressure difference and the deformation rate. The results showed that the cord angle reduced the effective area and its change rate during deformation by limiting the radial deformation of the bellow. When the cord angles were 30°, 45° and 60°, the deformation rates were 65.6%, 20.3% and 4.8%, respectively. The cord angle had a positive effect on the vertical output force when the cord angle was in the range of 30~56°, and it had a negative impact in the range of 56~60°. As the cord angle increased, the vertical stiffness decreased. As the piston angle increased, the effective area of the air spring decreased, and the change in internal pressure decreased, reducing its vertical output force and stiffness. The piston diameter had little effect on the internal pressure and deformation rate. It increased the vertical output force and stiffness by increasing the effective area. The structural parameters of the air spring had a significant impact on the stability of the downforce; the structure of the air spring should be optimized according to the downforce demand of the corn no-till planter. |
| first_indexed | 2024-03-09T20:56:51Z |
| format | Article |
| id | doaj.art-d07531eea357423c8ea44a06cd8f1fe8 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-09T20:56:51Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-d07531eea357423c8ea44a06cd8f1fe82023-11-23T22:19:33ZengMDPI AGAgriculture2077-04722022-09-011210151310.3390/agriculture12101513Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn PlanterXinpeng Cao0Qingjie Wang1Dijuan Xu2Shenghai Huang3Xiuhong Wang4Longbao Wang5College of Engineering, China Agricultural University, Beijing 100083, ChinaCollege of Engineering, China Agricultural University, Beijing 100083, ChinaBeijing Vocational College of Agriculture, Beijing 100083, ChinaCollege of Engineering, China Agricultural University, Beijing 100083, ChinaCollege of Engineering, China Agricultural University, Beijing 100083, ChinaCollege of Engineering, China Agricultural University, Beijing 100083, ChinaTo avoid the issues of undesired soil compaction and seeding depth variation caused by the downforce fluctuation of the corn no-till planter, the influence of the structural parameters of the air spring on the downforce was researched in this paper, by establishing the gas–solid coupling simulation model of the air spring. The downforce test bench was built to verify the simulation model; the test showed that the vertical output force error of the simulation model was 4.79%, the pitch diameter error was 0.76%, and the pressure error was 5.07%. The cord angle, piston angle and piston diameter were used as influencing factors to carry out single-factor experiments. The influences of structural parameters on downforce were analyzed from four aspects: the vertical output force, the vertical stiffness, the pressure difference and the deformation rate. The results showed that the cord angle reduced the effective area and its change rate during deformation by limiting the radial deformation of the bellow. When the cord angles were 30°, 45° and 60°, the deformation rates were 65.6%, 20.3% and 4.8%, respectively. The cord angle had a positive effect on the vertical output force when the cord angle was in the range of 30~56°, and it had a negative impact in the range of 56~60°. As the cord angle increased, the vertical stiffness decreased. As the piston angle increased, the effective area of the air spring decreased, and the change in internal pressure decreased, reducing its vertical output force and stiffness. The piston diameter had little effect on the internal pressure and deformation rate. It increased the vertical output force and stiffness by increasing the effective area. The structural parameters of the air spring had a significant impact on the stability of the downforce; the structure of the air spring should be optimized according to the downforce demand of the corn no-till planter.https://www.mdpi.com/2077-0472/12/10/1513air springno-till planterdownforce controlfinite element analysis |
| spellingShingle | Xinpeng Cao Qingjie Wang Dijuan Xu Shenghai Huang Xiuhong Wang Longbao Wang Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter Agriculture air spring no-till planter downforce control finite element analysis |
| title | Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter |
| title_full | Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter |
| title_fullStr | Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter |
| title_full_unstemmed | Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter |
| title_short | Design and Analysis of Pneumatic Downforce Regulating Device for No-Till Corn Planter |
| title_sort | design and analysis of pneumatic downforce regulating device for no till corn planter |
| topic | air spring no-till planter downforce control finite element analysis |
| url | https://www.mdpi.com/2077-0472/12/10/1513 |
| work_keys_str_mv | AT xinpengcao designandanalysisofpneumaticdownforceregulatingdevicefornotillcornplanter AT qingjiewang designandanalysisofpneumaticdownforceregulatingdevicefornotillcornplanter AT dijuanxu designandanalysisofpneumaticdownforceregulatingdevicefornotillcornplanter AT shenghaihuang designandanalysisofpneumaticdownforceregulatingdevicefornotillcornplanter AT xiuhongwang designandanalysisofpneumaticdownforceregulatingdevicefornotillcornplanter AT longbaowang designandanalysisofpneumaticdownforceregulatingdevicefornotillcornplanter |