FR2466009A1 - Weight of force sensor with variable sensitivity - uses strain gauges on adjacent sections of two holes formed in horizontal elements mounted below platform - Google Patents

Weight of force sensor with variable sensitivity - uses strain gauges on adjacent sections of two holes formed in horizontal elements mounted below platform Download PDF

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Publication number
FR2466009A1
FR2466009A1 FR7923505A FR7923505A FR2466009A1 FR 2466009 A1 FR2466009 A1 FR 2466009A1 FR 7923505 A FR7923505 A FR 7923505A FR 7923505 A FR7923505 A FR 7923505A FR 2466009 A1 FR2466009 A1 FR 2466009A1
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FR
France
Prior art keywords
vertical
elements
horizontal elements
sensor
building
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7923505A
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French (fr)
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FR2466009B1 (en
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7923505A priority Critical patent/FR2466009A1/en
Publication of FR2466009A1 publication Critical patent/FR2466009A1/en
Application granted granted Critical
Publication of FR2466009B1 publication Critical patent/FR2466009B1/fr
Granted legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01G3/1412—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being parallelogram shaped

Abstract

The sensor comprises two vertical elements (l, 2) one of which is mounted on the balance platform (22) while the other is mounted under the platform via two seating areas (3, 4) on horizontal elements (5, 6) and a vertical element (7). Two holes (16) allow thin sections (12, 13, 10, 15) to be obtained at equal distances from the vertical axis. These form articulation points for the frame and correction is applied by cutting sections from the exterior surface of the elements. Strain gauges (21) on the adjacent sections of the two holes measure the force applied to the platform by deformation of the vertical elements. The addition or removal of metal from the deforming elements allow the required tolerances to be obtained.

Description

LES FIGURES DES DESSINS ANNEXÉS, DONNÉS A TITRE D'EXEMPLES NON
LIMITATIFS, EXPLICITENT LARGEMENT L INVENTION. THE FIGURES OF THE ANNEXED DRAWINGS, GIVEN AS NON-EXAMPLES
LIMITING, BROADLY EXPLICIT THE INVENTION.

LA FIGURE C1) EST UNE VUE EN ÉLÉVATION AVEC UNE VUE DE DESSUS
D UN CAPTEUR COMPOSÉ DE DEUX ÉLÉMENTS VERTICAUX (1-2), L'UN POSÉ SUR LA
BASE DE LA PLATEFORME BALANCE OU BASCULE, L'AUTRE SOUS LE PLATEAU DE LADITE
PLATEFORME PAR L'INTERMÉDIAIRE DE DEUX ASSISES (3 ET 4) DE DEUX ÉLÉMENTS
HORIZONTAUX (5-6) ET D'UN ÉLÉMENT VERTICAL CENTRAL (7), DE TROIS AXES
(8-9-10) DÉFINISSANT LE LIEU DU CENTRE GÉOTETRIQUE DU BÂTI (11)1 LES DEUX
ÉLIMENTS HORIZONTAUX (5 ET 6) SONT A ÉGALE DISTANCE DE L'AXE HORIZONTAL DU
BÂTI ET POSSÈDENT CHACUN DEUX AMINCISSEMENTS C12-13) ET (10-15) A ÉGALE DIS
TANCE DE L AXE VERTICAL DU BATIK CES QUATRE AMINCISSEMENTS FORMANT LES
POINTS D'ARTICULATION EN PARALLÉLOGRAMME DU BÂTI OBTENUS PAR DEUX TROUS (16)
DE Te DIAMATRE AVEC LA POSSIBILITÉ DE CORRIGER L'ÉPAISSEUR DES AMINCISSE-
MENTS PAR DES ENCOCHES (17-18-19-20) REPRÉSENTÉES FIGURE (2).CES TROUS
LAISSENT DANS LE CENTRE UN TROISIÈME ÉLÉMENT (7), LEDIT ÉLÉMENT AYANT SON
ÉPAISSEUR EGALEMENT RÉPARTIE PAR RAPPORT A L'AXE VERTICAL DU BATI LUI
MÊME CONFONDU AVEC LA FIBRE NEUTRE DUDIT ÉLÉMENT1 SUR LEQUEL SONT PLACÉES
PAR EXEMPLE, DES JAUGES DE CONTRAINTE (21) DÉTECTANT LA FORCE APPLIQUÉE SUR
LE CAPTEUR. LES DITES JAUGES ÉTANT PLACÉES SYMÉTRIQUEMENT PAR RAPPORT AUX
AXES (8-9^10) ET AU CENTRE GÉOMÉTRIQUE (11). FIGURE C1) IS AN ELEVATED VIEW WITH A VIEW FROM ABOVE
D A SENSOR COMPOSED OF TWO VERTICAL ELEMENTS (1-2), ONE PLACED ON THE
BASE OF THE BALANCE OR WEIGHING PLATFORM, THE OTHER UNDER THE LADITE PLATFORM
PLATFORM VIA TWO SEATS (3 AND 4) OF TWO ELEMENTS
HORIZONTAL (5-6) AND A CENTRAL VERTICAL ELEMENT (7), THREE AXES
(8-9-10) DEFINING THE LOCATION OF THE GEOTETRIC CENTER OF THE BUILDING (11) 1 BOTH
HORIZONTAL ELEMENTS (5 AND 6) ARE EQUAL TO THE HORIZONTAL AXIS OF THE
MOUNTED AND EACH TWO THINNINGS C12-13) AND (10-15) EQUAL TO DIS
TANCE OF THE VERTICAL AXIS OF THE BATIK THESE FOUR THINNINGS FORMING THE
BUILDING PARALLELOGRAM ARTICULATION POINTS OBTAINED BY TWO HOLES (16)
OF THE DIAMATER WITH THE POSSIBILITY OF CORRECTING THE THICKNESS OF THE THINNESS-
MENTS BY NOTCHES (17-18-19-20) REPRESENTED FIGURE (2). THESE HOLES
LEAVE A THIRD ELEMENT (7) IN THE CENTER, SAID ELEMENT HAVING ITS
THICKNESS ALSO DISTRIBUTED IN RELATION TO THE VERTICAL AXIS OF THE BUILDING
SAME MIXED WITH NEUTRAL FIBER OF SAID ELEMENT1 ON WHICH ARE PLACED
FOR EXAMPLE, STRAIN GAUGES (21) DETECTING THE FORCE APPLIED ON
THE SENSOR. THE SAID GAUGES ARE PLACED SYMMETRICALLY IN RELATION TO
AXES (8-9 ^ 10) AND IN THE GEOMETRIC CENTER (11).

Sous L'EFFET DE LA CHARGE LE PLATEAU SUPÉRIEUR (22) FIXÉ SUR LA
PARTIE SUPÉRIEURE DU BÂTI SE DÉPLACE PARALLELEMENT A LA BASE (23) GRACE AU
PARELLÉLOGRAMME FAIT DESCENDRE L'ÉLIMENT VERTICAL (2) ENTRAfNANT LES DEUX
ÉLEMENTS HORIZONTAUX (5 ET 6) QUI A LEUR TOUR ENTRAÎNENT LES DEUX SURÉPAIS
SEURS (2Lfr25), L'UNE VERS LA GAUCHE, L'AUTRE VERS LA DROITE PROVOQUANT SUR
L'ÉLÉMENT SENSIBLE VERTICAL (7) UNE DÉFORMÉE EN "S" (FIGURE 3).UNDER THE EFFECT OF LOADING THE UPPER TRAY (22) FIXED ON THE
UPPER PART OF THE MOUNT MOVES PARALLEL TO THE BASE (23) THANKS TO
PARELLÉLOGRAMME DESCENDS THE VERTICAL ELEMENT (2) DRIVING BOTH
HORIZONTAL ELEMENTS (5 AND 6) WHICH HAVE THEIR TURN LEAD BOTH TWICE
SEURS (2Lfr25), ONE TOWARDS THE LEFT, THE OTHER TOWARDS THE RIGHT
THE VERTICAL SENSITIVE ELEMENT (7) AN S-SHAPED (FIGURE 3).

LES ÉLÉMENTS HORIZONTAUX (5 ET 6) ÉTANT PORTEUR DE LA CHARGE, L'ÉLÉMENT VERTICAL
(7) SUIVEUR.THE HORIZONTAL ELEMENTS (5 AND 6) BEARING THE LOAD, THE VERTICAL ELEMENT
(7) FOLLOWER.

LA SENSIBILITÉ DU CAPTEUR EST VARIABLE EN FONCTION DES ENTRAXES DES
TROUS (16) PAR RAPPORT AUX AXES HORIZONTAUX ET VERTICAUX, EN FONCTION DE
L'ÉPAISSEUR DES DEUX ÉLÉMENTS HORIZONTAUX ET EN FONCTION DE L ÉPAISSEUR SU BÂTI,
LES AUTRES FIGURES SONT DES VARIANTES DE LA FIGURE (1), SANS POUR AUTANT
CHANGER LE PRINCIPE DE FONCTIONNEMENT DE LA PRÉSENTE INVENTION.THE SENSOR SENSITIVITY IS VARIABLE DEPENDING ON THE CENTERS OF THE
HOLES (16) RELATIVE TO HORIZONTAL AND VERTICAL AXES, DEPENDING ON
THE THICKNESS OF THE TWO HORIZONTAL ELEMENTS AND ACCORDING TO THE THICKNESS ON THE BASE,
THE OTHER FIGURES ARE VARIANTS OF THE FIGURE (1), WITHOUT THEM
CHANGE THE OPERATING PRINCIPLE OF THIS INVENTION.

LA FIGURE (2) MONTRE UN PERCAGE DIFFÉRENT, OU LES TROUS (16) SONT REMPLACÉS
PAR DEUI OUVERTURES (26), AVEC A TITRE D'EXEMPLE, DES ASSISES (3 ET 4) RAPPORTÉES.FIGURE (2) SHOWS A DIFFERENT DRILLING, OR THE HOLES (16) ARE REPLACED
THROUGH OPENINGS (26), WITH EXAMPLES, SEATS (3 AND 4) ADDED.

LA FIGURE (3) MONTRE LA DÉFORMÉE DU CAPTEUR SOUS CHARGE ET PAR EXEMPLE
LA POSITION DES JAUGES DE CONTRAINTE,
LES TOLÉRANCES OBTENUES AVEC DES MACHINESOUTILS CLASSIQUES FONT QUE LES
PLATEFORMES DOIVENT ÊTRE AJUSTÉES EN AJOUTANT OU EN RETIRANT DU MÉTAL SUR LES
AMINCISSEMENTS PAR EXEMPLE (12-13-14-15 FIGURE 1). FIGURE (3) SHOWS THE DEFORMATION OF THE SENSOR UNDER LOAD AND FOR EXAMPLE
THE POSITION OF THE CONSTRAINTS,
THE TOLERANCES OBTAINED WITH CLASSIC MACHINE TOOLS MAKE
PLATFORMS MUST BE ADJUSTED BY ADDING OR REMOVING METAL FROM THE
THINNESSES FOR EXAMPLE (12-13-14-15 FIGURE 1).

Claims (4)

1- CAPTEUR CARACTÉRISÉ EN CE QU'IL COMPREND UN BÂTI OU BLOC PARALÉLIPIPÉDIQUE 1- SENSOR CHARACTERIZED IN THAT IT INCLUDES A PARALLELIPIPEDIC FRAME OR BLOCK L'USINAGE DE 2 TROUS. MACHINING OF 2 HOLES. OU TOUT AUTRE PROCÉDÉ. L'ENSEMBLE OBTENU DANS UN BLOC PILNVLÉLIPIPÉDIQUE PAR OR ANY OTHER PROCESS. THE SET OBTAINED IN A PILNVLELIPIPEDIC BLOCK BY LE DISPOSITIF DE DÉTECTION CHOISI: JAUGES DE CONTRAINTE, CAPACITIF, OPTIQUE, THE SELECTED DETECTION DEVICE: CONSTRAINTS, CAPACITIVE, OPTICAL, RELIÉE AUX DEUX ÉLÉMENTS HORIZONTAUX, RÉFLECTANT, ENTRAÎNANT, OU RECEVANT CONNECTED TO TWO HORIZONTAL ELEMENTS, REFLECTING, DRIVING, OR RECEIVING UNE ARTICULATION DUDIT BÂTI EN PARALLÉLOGRAMME. UNE ZONE CENTRALE VERTICALE A JOINT OF THE SAME BUILT IN PARALLELOGRAM. A VERTICAL CENTRAL ZONE TIES AMINCIES SYMÉTRIQUEMENT PAR RAPPORT A L'AXE VERTICAL DU BÂTI PERMETTANT TIES SYMMETRICALLY THINNED IN RELATION TO THE VERTICAL AXIS OF THE PERMITTING FRAME TÉRIEURES SYMÉTRIQUES PAR RAPPORT A L'AXE HORIZONTAL DU BÂTI MUNIES DE PAR SYMMETRICAL BEARINGS IN RELATION TO THE HORIZONTAL AXIS OF THE BUILDING PROVIDED BY RELIÉS ENTRE EUX, LES ÉLÉMENTS HORIZONTAUX ÉTANT ESPACÉS EN DEUX ZONES EX CONNECTED BETWEEN THEM, THE HORIZONTAL ELEMENTS ARE SPACED IN TWO EX ZONES ÉVIDÉ MASSIF OU ASSEMBLÉ CONSTITUÉ PAR DES ÉLÉMENTS VERTICAUX ET HORIZCNTAUX SOLID HIDDEN OR ASSEMBLED CONSTITUTED BY VERTICAL AND HORIZCNAL ELEMENTS 2- CAPTEUR SELON LA REVENDICATION 1 CARACTÉRISÉ EN CE QU'IL PEUT ÊTRE UTILISÉ2- SENSOR ACCORDING TO CLAIM 1 CHARACTERIZED IN THAT IT CAN BE USED EN SIMPLE CAPTEUR DE FLEXION, INTÉGRÉ DANS UNE PLATEFORME, BALANCE OU BASCULE IN SINGLE BENDING SENSOR, INTEGRATED IN A PLATFORM, SCALE OR WEIGHER OU ENCORE INTÉGRÉ DANS LE BRAS D'UNE ARTICULATION DE BASCULE PAR EXEMPLE. OR STILL INTEGRATED IN THE ARM OF A TIPPED JOINT FOR EXAMPLE. 3- CAPTEUR SELON LES REVENDICATIONS 1 ET 2 CARACTÉRISÉ EN CE QUE LE BÂTI PEUT3- SENSOR ACCORDING TO CLAIMS 1 AND 2 CHARACTERIZED IN THAT THE BUILDING CAN ÊTRE FABRIQUÉ DANS UN BLOC DE MATIÈRE ÉLASTIQUE D'UNE SEULE PIÈCE OU ASSEMBLÉ BE MADE IN A BLOCK OF ELASTIC MATERIAL OF A SINGLE PIECE OR ASSEMBLED EN DEUX OU PLUSIEURS ÉLÉMENTS, L'ENSEMBLE COMPORTANT: L'ASSISE SUPÉRIEURE ET IN TWO OR MORE ELEMENTS, THE PACKAGE INCLUDING: THE UPPER SEAT AND INFÉRIEURE, DEUX TROUS OU OUVERTURES DÉFINISSANT LES ÉLÉMENTS HORIZONTAUX, LES LOWER, TWO HOLES OR OPENINGS DEFINING THE HORIZONTAL ELEMENTS, THE ARTICULATIONS DU PARALLÉLGGRAMME ET L'ÉLÉMENT CENTRAL VERTICAL. JOINTS OF THE PARALLEGGRAM AND THE VERTICAL CENTRAL ELEMENT. PRÉSENTE INVENTION. PRESENT INVENTION. MESURE DE FORCE CARACTÉRISÉ EN CE QU'ILS UTILISENT UN CAPTEUR OBJET DE LA FORCE MEASUREMENT CHARACTERIZED IN THAT THEY USE AN OBJECT SENSOR VERTICAL DU BÂTI QUE LEDIT ÉLÉMENT EST PORTEUR DU CENTRE GÉOMÉTRIQUE DU BÂTI 5- PLATEFORME DE PESÉE1 BALANCE, BASCULE ET TOUS DISPOSITIFS DE PESAGE OU DE VERTICAL OF THE BUILDING THAT SAID ELEMENT IS CARRIER OF THE GEOMETRIC CENTER OF THE BUILDING 5- WEIGHING PLATFORM 1 SCALE, WEIGHER AND ALL WEIGHING OR WEIGHING DEVICES EST RÉPARTIE DE PART ET D'AUTRE DE LA FIBRE NEUTRE CONFONDUE AVEC L'AXE  IS DISTRIBUTED ON EACH AND FROM THE NEUTRAL FIBER MIXED WITH THE AXIS TRIANGULAIRE, CONCAVE OU CONVEXE OU TOUTES AUTRES FORMES ET QUE SON ÉPAISSEUR TRIANGULAR, CONCAVE OR CONVEX OR ALL OTHER FORMS AND THICK THICKNESS NEUR DU DISPOSITIF DE DÉTECTION CHOISI, QUE SA SURFACE EST PLANE, RECTANGULAIR NEUR OF THE SELECTED DETECTION DEVICE, THAT THE SURFACE IS PLANE, RECTANGULAR DE LA CHARGE, QUE LEDIT ÉLÉMENT VERTICAL EST RECEVEUR, RÉFLECTEUR OU ENTRAΠOF THE LOAD, WHICH SAID VERTICAL ELEMENT IS RECEIVER, REFLECTOR OR DRIVEN CENTRAL VERTICAL EST SUIVEUR TANDIS QUE LES ÉLÉMENTS HORIZONTAUX SONT PORTEUR VERTICAL CENTRAL IS FOLLOWING WHILE THE HORIZONTAL ELEMENTS ARE BEARING 4- CAPTEUR SELON LES REVENDICATIONS 1A 3 CARACTÉRISÉ EN CE QUE L'ÉLÉMENT 4- SENSOR ACCORDING TO CLAIMS 1A 3 CHARACTERIZED IN THAT THE ELEMENT INTÉGRÉE.  INTEGRATED. 6, CAPTEUR DE MESURE DE GRANDEUR PHYSIQUE DANS LEQUEL LA PRÉSENTE INVENTION EST 6, PHYSICAL SIZE MEASUREMENT SENSOR IN WHICH THE PRESENT INVENTION IS
FR7923505A 1979-09-21 1979-09-21 Weight of force sensor with variable sensitivity - uses strain gauges on adjacent sections of two holes formed in horizontal elements mounted below platform Granted FR2466009A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7923505A FR2466009A1 (en) 1979-09-21 1979-09-21 Weight of force sensor with variable sensitivity - uses strain gauges on adjacent sections of two holes formed in horizontal elements mounted below platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7923505A FR2466009A1 (en) 1979-09-21 1979-09-21 Weight of force sensor with variable sensitivity - uses strain gauges on adjacent sections of two holes formed in horizontal elements mounted below platform

Publications (2)

Publication Number Publication Date
FR2466009A1 true FR2466009A1 (en) 1981-03-27
FR2466009B1 FR2466009B1 (en) 1983-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR7923505A Granted FR2466009A1 (en) 1979-09-21 1979-09-21 Weight of force sensor with variable sensitivity - uses strain gauges on adjacent sections of two holes formed in horizontal elements mounted below platform

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597751A (en) * 1948-02-26 1952-05-20 Baldwin Lima Hamilton Corp Bending beam load weighing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597751A (en) * 1948-02-26 1952-05-20 Baldwin Lima Hamilton Corp Bending beam load weighing device

Also Published As

Publication number Publication date
FR2466009B1 (en) 1983-04-15

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