Design, development and evaluation of tractor operated spading machine
| dc.contributor.advisor | Dogra, Baldev | |
| dc.contributor.author | Karwasra, Nitin | |
| dc.date.accessioned | 2020-06-10T07:44:34Z | |
| dc.date.available | 2020-06-10T07:44:34Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | One of the most important operation in farming is tillage that handles the breaking of soil. Soil tilth needs to be managed by best management practice in order to reduce energy consumption. Primary advantage of spading machine as compared to the other ploughing methods is that it does not over-pulverize and create compact layer at the bottom of tilled soil. The present study was conducted to design, develop and evaluate a tractor operated indigenous spading machine. A crank-rocker type motion of four-bar mechanism was selected to simulate the spading action. Analytical analysis of four-bar mechanism was conducted and the link lengths were optimized using simulation software. The gearbox was developed assuming 50hp tractor to be used for operating the machine and its 3D model was developed in CAD software. The machine was fabricated and assembled with the help of a manufacturer. Field evaluation of the developed spading machine was conducted at three levels of forward speed (S1= 2.26, S2= 3.37 and S3= 4.92 km/h), three levels of depth of operation (D1= 20 , D2 = 25 and D3= 30 cm) and three levels of angle of attack (A1= 30°, A2= 35° and A3= 40°). The performance was analyzed on selected dependent variables i.e. bulk density, PTO torque, pulverization index and cone index. Statistical analysis revealed that forward speed (S) and depth of operation (D) had significant effect at 5% level of significance, while no significant effect observed for angle of attack (A) on bulk density of tilled soil. Maximum and minimum mean bulk density was observed at S3D3A3 (1.54 Mg/m3) and S1D1A1 (1.17 Mg/m3), respectively. PTO torque was affected significantly by forward speed and depth of operation, while angle of attack had no significant effect at 5% level of significance. Maximum and minimum mean PTO torque was observed at S3D3A1 (550.78 Nm) and S1D1A3 (327.66 Nm), respectively. Pulverization index was affected significantly by forward speed and depth of operation, while angle of attack had no significant effect at 5% level of significance. Maximum and minimum mean pulverization index was observed at S3D3A1 (18.20 mm) and S1D1A3 (3.68 mm), respectively. Effect of forward speed and depth of operation was statistically significant while angle of attack had no significant effect at 5% level of significance for cone index. Maximum and minimum cone index was found at S3D3A1 (1888.09 kPa) and S1D1A3 (624.27 kPa), respectively. | en_US |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810147385 | |
| dc.keywords | tillage, spading machine, crank-rocker, evaluation | en_US |
| dc.language.iso | en | en_US |
| dc.pages | 78 | en_US |
| dc.publisher | Punjab Agricultural University, Ludhiana | en_US |
| dc.research.problem | Design, development and evaluation of tractor operated spading machine | en_US |
| dc.sub | Farm, Machinery and Power | en_US |
| dc.theme | Design, development and evaluation of tractor operated spading machine | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | Design, development and evaluation of tractor operated spading machine | en_US |
| dc.type | Thesis | en_US |