Measuring and testing – Dynamometers – Responsive to force
Patent
1996-10-04
1998-03-17
Dougherty, Elizabeth L.
Measuring and testing
Dynamometers
Responsive to force
73862474, 73862392, G01L 104
Patent
active
057289530
ABSTRACT:
Apparatus for sensing the magnitude of a load on a cable as the cable is employed to support the load includes a beam structure clamped to the cable so that a length of the cable lies along the beam structure. A spacer associated with the beam structure forces a slight curvature in a portion of the length of cable under a cable "no-load" condition so that the portion of the length of cable is spaced from the beam structure to define a cable curved portion. A strain gauge circuit including strain gauges is secured to the beam structure by welding. As the cable is employed to support a load the load causes the cable curved portion to exert a force normal to the cable through the spacer and on the beam structure to deform the beam structure as the cable curved portion attempts to straighten under the load. As this deformation takes place, the resistance of the strain gauges is set to a value proportional to the magnitude of the normal strain on the beam structure during such deformation. The magnitude of the normal strain is manipulated in a control device to generate a value equal to the magnitude or weight of the load supported by the cable.
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Michael J. Beus and William G. McCoy, Mine Shaft Conveyance Load-Monitoring System, 5 pages, The paper was presented on Oct. 11, 1995.
Beus Michael J.
McCoy William G.
Dougherty Elizabeth L.
Dvorscak Mark P.
LaMarre Mark
Moser William R.
Noori Max H.
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