A Mathematical Treatment to Find the Maximum Downward Displacement of the Free End of a Binocular type Bending Beam Load Cell for Correct Alignment of Overload Stoppers
| International Journal of Mechanical Engineering |
| © 2022 by SSRG - IJME Journal |
| Volume 9 Issue 5 |
| Year of Publication : 2022 |
| Authors : Chinmay Vinay Rajguru |
10.14445/23488360/IJME-V9I5P102
How to Cite?
Chinmay Vinay Rajguru, "A Mathematical Treatment to Find the Maximum Downward Displacement of the Free End of a Binocular type Bending Beam Load Cell for Correct Alignment of Overload Stoppers," SSRG International Journal of Mechanical Engineering, vol. 9, no. 5, pp. 11-15, 2022. Crossref, https://doi.org/10.14445/23488360/IJME-V9I5P102
Abstract:
Load cells, also known as force transducers, have a variety of applications in industry as well as in R and D work of science and technology. The cantilever beam load cell, also known as binocular type or single point load cell, is most suitable for light capacity static weighing and inline-check weighing systems. The part of the load cell which incorporates binocular structure is called the “spring element.” This type of structure generates a large strain close to the maximum allowable Strain of the foil-type strain gauges for maximum load. The maximum strain level is present just above and below the hollow portions of the spring element. The foil-type strain gauges are attached in these areas to get maximum output signal. When a load is applied at its free end, the binocular type load cell undergoes ‘s’ type deformation, and the horizontal flat portions near the fixed and free end become parallel. For research purposes, a commercially available binocular type aluminum- alloy load cell of 20 kg capacity is taken. It contained four ‘Cu-Ni’ foiltype strain gauges. Specifications of the load cell and strain gauges are obtained from the manufacturer. This data is used to perform simple mathematical calculations which specify the magnitude of maximum downward displacement of the loaded end of the load cell. Overload stoppers mounted below the loaded end can then be conveniently adjusted to utilize the maximum capacity of the load cell while protecting it from overloads and shock loads.
Keywords:
Bending beam load cell, ‘Cu-Ni’ strain gauges, Overloading, Sensitivity, Spring element.
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