Fabrication of Groundnut Shelling Machine

Fabrication of Groundnut Shelling Machine

Abstract: Groundnut product demand is on the increase and the application is largely dependent on the cleanness of the nuts. The separation process is usually an energy sapping task that requires a lot of time. In order to separate the nuts from its shell effectively a shelling machine was developed. The machine employs an auger screw as a means of breaking the groundnut pod. The machine basically comprises of shelling chamber, separating chamber and a motor (1HP). The arrangement of these parts is connected by a compound belt of type B standard V-belt of pitch length 1694mm. With the Von-mises equation, the material for the shelling shaft is taken to be mild steel. The materials used in the fabrication of the machine are sourced locally so as to ensure that it is cheap, affordable and easily maintained by the peasant farmers. The shelling efficiency and material damage are 84% and 14% respectively for groundnut seeds of 86.5% dry..


Design and Fabrication of Groundnut Shelling Bachine Main purpose of this paper is to understand the design and fabrication of Groundnut Plucking Machine. Design is eco-friendly and the mechanism is as kept simple as possible. The concept of the project is such that the knowledge of designing, mechanism and plucking forces are increased. Some plucking forces are needed to pluck the Groundnut from its plant. This project consists of designing and development of a machine to pluck Groundnut so that the farmer can sell it directly in the market and can achieve more profit. This project can be directly applied for commercial purposes to produce number of identical machines as a agricultural equipment. This project includes the process of designing and fabrication of different parts of this plucking machine considering plucking forces, economical and ergonomic factor for people to use. Main purpose of this project is to generate new technology of Groundnut plucking that would reduce human efforts and to make things easier than before. After the design and fabrication, it was transformed to its real product which made the objectives accomplished.

1 HP Induction motor drives ring carriage through belt pulley drive. The ring carriage mounted on bearing will get rotated due to this arrangement. The whole assembly of shaft, ring carriage and bearing is mounted on rigid support. L- Angles are welded around periphery of ring carriage. Hence, one side of L – angle is projected out from ring carriage. The L-angles are so welded that they will not contribute to dynamic unbalancing. Hence, all L-angles are welded by means of considering dynamic balancing criteria. When groundnuts with the plant are held against side of L- angles, which is projected outside the rotating ring carriage, striking action takes place. This produces stroke on the groundnuts. This stroke is sufficient enough to separate groundnuts from its plant. Plant remains in the hand clamp and separated peanuts are thrown away by striking action. The minimum three operators can work simultaneously on this machine. Hence, in this way machine is designed and fabricated to reduce human efforts.