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Title: Cable load sensing device

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 ormore » weight of the load supported by the cable.« less

Inventors:
 [1];  [1]
  1. Spokane, WA
Issue Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
OSTI Identifier:
871420
Patent Number(s):
5728953
Assignee:
United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01L - MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
G - PHYSICS G01 - MEASURING G01G - WEIGHING
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cable; load; sensing; device; apparatus; magnitude; employed; support; beam; structure; clamped; length; lies; spacer; associated; forces; slight; curvature; portion; no-load; condition; spaced; define; curved; strain; gauge; circuit; including; gauges; secured; welding; causes; exert; force; normal; deform; attempts; straighten; deformation; takes; resistance; set; value; proportional; manipulated; control; generate; equal; weight; supported; circuit including; strain gauges; strain gauge; control device; sensing device; beam structure; value equal; load sensing; curved portion; /73/

Citation Formats

Beus, Michael J, and McCoy, William G. Cable load sensing device. United States: N. p., 1998. Web.
Beus, Michael J, & McCoy, William G. Cable load sensing device. United States.
Beus, Michael J, and McCoy, William G. Thu . "Cable load sensing device". United States. https://www.osti.gov/servlets/purl/871420.
@article{osti_871420,
title = {Cable load sensing device},
author = {Beus, Michael J and McCoy, William G},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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