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Design And Construction Of Portable Storage For Perishable Product
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3.4.5 Design of Shaft
The rotating parts of the forage chopper are mounted on a shaft which must provide a constant rotary motion for the cutting knives which are carried on a flywheel. The shaft considered for satisfactory performance is to be rigid enough while transmitting load under various operating conditions. To achieve this, a solid circular shaft was considered for analysis of combined torsional and bending stresses.Since the shaft will be subjected to torsional stress and high vibration, adequate calculation is made to determine the correct nominal allowable stress, bending stress and torsional stress. For solid shaft having little or no axial load, the diameter is given by: (Hicks 1995; Desmond 2007; Benham and Warnock 1980.
T = π x t x d3
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Where
T = Twisting moment (Nm)
t = Torsional shear (N/m2) = 42mpa (Khurmi and Gupta, 2004)
d = Diameter of the shaft (m)
T = (T1 – T2) R
Where
T1= Tight side tension (N)
T2 = slack side tension (N)
R = Radius of the pulley
Table 3.1 shows the Summary of Results of Design Calculations shown
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CHAPTER ONE - [ Total Page(s): 2 ]CHAPTER ONEINTRODUCTION1.1 Preamble Animal feedstuff is a very importance aspect of livestock husbandry as it is a major limiting factor in the rearing of animal to meet the increasing demand for animal protein, milk, hides and skill and other sub-Saharan African countries for the nomadic fulanis and pastoralist to allow the animal graze freely in the fields, in most cases after harvest (Umanna and Asishi, 1988; 1985.In some cases the animal rearers collect the crop residues home to feed t ... Continue reading---
CHAPTER TWO - [ Total Page(s): 4 ]Principle of Forage ChopperForage chopper is a size reduction process which can be done by pushing or forcing a thin sharp knife through the material to be chopper. When forage crop are used as feeds for animals, size of the fodder (forage) must be reduced as much as possible to aid proper feeding and palatabilityThe grinding performance and physical properties of wheat, barley straw, corn stove and switch grass were studied by (main at al., 2004). They showed that switch grass had highest speci ... Continue reading---
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