In this paper, an axial-flow type paddy thresher 5.97 kW with 450 mm cylinder diameter and 1028.7 mm cylinder length was designed. The main objective of this study is to analyze structural behaviors of threshing drum shaft, shaker shaft, fan shaft and to select the bearings. The major components of the machine are threshing, separating and cleaning units. The effects of threshing cylinder and concave, fan requirements and power transmission system which includes belt and pulley design, shafts design, and bearings design, were investigated. Shaft design consists mainly of the determination of the correct shaft diameter to ensure satisfactory strength when the shaft is transmitting power under various load conditions. The shaft is generally acted by torsional moment and force. The theoretical result of von-Mises stress is 62 MPa and effective strain is 4.032×10-4 for gray cast iron. Numerical result of von-Mises stress is 52.8 MPa and effective strain is 3.934×10-4. Percent deviation of von-Mises stress is 17% and effective strain is 2%. The structural analysis of threshing drum shaft is also accomplished in this paper and is analyzed by using ANSYS Workbench 17.0 on the basis of Finite Element Method.
axial-flow, power transmission system, threshing drum, torsional moment, von-Mises stress
Aung Ko Latt , Theint Theint Ei , Htay Htay Win "Structural Analysis Of Shafts And Bearings For Paddy Thresher" Iconic Research And Engineering Journals Volume 3 Issue 1 2019 Page 385-390
Aung Ko Latt , Theint Theint Ei , Htay Htay Win "Structural Analysis Of Shafts And Bearings For Paddy Thresher" Iconic Research And Engineering Journals, 3(1)