Studies on the Transportation and Materials Handling in Agricultural Operations (IV)
Fundamental Studies on Powered Type Free Curved Roller Conveyer
1979 Volume 41 Issue 1 Pages 77-82
Details
1979 Volume 41 Issue 1 Pages 77-82
The free courved roller conveyer descrived in this paper is, powered by the air pressure in the elastic pipe. The purpose of this study is to investigate the principle of the driving mechanism of this conveyor. Theoretical equations were introduced and compared with the static experimental model.
1) The floating hight of the elastic pipe contacting with the rear side of the load was determined by the equation (12), which can be led from the local change of the air pressure in the pipe. In the same manner, the floating hight of the pipe contacting with the front side of the load was determined by the equation (9). The results of the theoretical calculation were relatively coincident with the experimental values (Fig. 5, Fig. 6)
2. The rolling resistance of the load was measured by towing method and the rolling resistance coefficient was determined as the value of 0.026.
3. The equation (16) which gives the driving force of the load was obtained from the floating bight h1, hn and the rolling resistance coefficient. (Fig. 8)
4. From the investigations mentioned above, it can be concluded that the driving force of the load is relative to the air pressure, the weight of the load and the diameter of the pipe, and it is also inversely propotional to the length of the load.
