G - Physics – 01 – L
Patent
G - Physics
01
L
G01L 1/10 (2006.01) G01G 3/16 (2006.01) G01L 5/00 (2006.01)
Patent
CA 2316800
The inventive force measuring cell consists of a plate (2) which is provided with a circular hole (2), the axis of which is perpendicular to the surface of said plate (2) and to the direction of the force that is to be measured. Said axis also lies within the neutral surface of the plate (2). The plate (2) can also be the web of a carrier. A measuring transducer (12) is inserted into the hole (3) in order to measure any modification of the size of the diameter of said hole (3) on a plane that is inclined at an angle of 45~ counter to the direction of the force (F) to be measured. A lateral force is created in the direction of y in addition to a transverse stress with a component xy by applying force in the direction of y when at least one side of the plate (2) is clamped in the base. The originally circular hole (3) is deformed into an ellipse. The measuring transducer (12) consists of a measuring transformer with an oscillating string.
L'invention concerne un dynamomètre qui comprend une plaque (2) présentant un orifice arrondi (3) dont l'axe est perpendiculaire à sa surface et à la direction de la force à mesurer. Ledit axe est situé dans la surface neutre de la plaque (2). Celle-ci peut également être le plateau d'un support. Dans l'orifice (3) est disposé un transducteur (12) qui mesure la modification du diamètre de l'orifice (3) dans un plan incliné de 45· par rapport à la direction de la force à mesurer (F). L'application de la force (F) dans la direction y produit, quand la plaque (2) est maintenue au moins d'un côté dans une base, une force transversale dirigée selon ladite direction et ainsi une contrainte tangentielle ? comportant une composante ?¿xy?. Ceci provoque la déformation de l'orifice initialement arrondi (3), qui prend une forme elliptique. Le transducteur (12) contient un transducteur à corde vibrante.
Lustenberger Martin
Wirth Johannes
Digi Sens Ag
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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