FR2850167A1 - Motors torque measuring device for aircraft, has sensor measuring angle of deformity of transmission shaft that includes odd concentric sections which are united in form of chain by two connections - Google Patents

Motors torque measuring device for aircraft, has sensor measuring angle of deformity of transmission shaft that includes odd concentric sections which are united in form of chain by two connections Download PDF

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Publication number
FR2850167A1
FR2850167A1 FR0300479A FR0300479A FR2850167A1 FR 2850167 A1 FR2850167 A1 FR 2850167A1 FR 0300479 A FR0300479 A FR 0300479A FR 0300479 A FR0300479 A FR 0300479A FR 2850167 A1 FR2850167 A1 FR 2850167A1
Authority
FR
France
Prior art keywords
transmission shaft
chain
connections
aircraft
shaft
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
FR0300479A
Other languages
French (fr)
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FR2850167B1 (en
Inventor
Jean Claude Fillion
Alain Garassimo
Eric Albert Khalifa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aircraft Engines SAS
Original Assignee
Hispano Suiza SA
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 Hispano Suiza SA filed Critical Hispano Suiza SA
Priority to FR0300479A priority Critical patent/FR2850167B1/en
Priority to PCT/FR2004/000104 priority patent/WO2004067215A2/en
Publication of FR2850167A1 publication Critical patent/FR2850167A1/en
Application granted granted Critical
Publication of FR2850167B1 publication Critical patent/FR2850167B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/12—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving photoelectric means

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The device has a transmission shaft (2) of a motor of an aircraft and deformable in torque. A sensor (9) measures an angle of deformity of the transmission shaft of the motor. The transmission shaft has multiple odd concentric sections (4, 5, 6) which are united in a form of a chain by two connections (7, 8) established alternatively to extremities opposite to the transmission shaft.

Description

DISPOSITIF DE MESURE DE COUPLE ISSU D'UN MOTEUR D'AERONEFTORQUE MEASUREMENT DEVICE FROM AN AIRCRAFT ENGINE

DESCRIPTIONDESCRIPTION

Le sujet de cette invention est un dispositif de mesure de couple.  The subject of this invention is a torque measurement device.

On éprouve le besoin de mesurer des couples de torsion, dans les moteurs d'aéronef, afin de déterminer les caractéristiques de transmission de mouvement du 10 moteur à une hélice. Cette mesure s'effectue par une mesure de l'angle de déformation en torsion d'un arbre intermédiaire. Les dispositifs connus pèchent toutefois par un certain défaut de sensibilité. Si on veut accroître celle-ci, il faut faire correspondre à un 15 couple déterminé un angle de déformation plus grand. Il pourrait être obtenu avec un arbre moins rigide ou plus long, mais on est limité en pratique par les nécessités de maintenir une résistance suffisante et un encombrement modéré.  There is a need to measure torsional torques in aircraft engines in order to determine the motion transmission characteristics of the engine to a propeller. This measurement is made by measuring the torsional deformation angle of an intermediate shaft. Known devices, however, suffer from a certain lack of sensitivity. If this is to be increased, a larger deformation angle must be matched to a given torque. It could be obtained with a less rigid or longer shaft, but it is limited in practice by the need to maintain sufficient strength and moderate bulk.

Le dispositif qui est proposé ici présente l'avantage essentiel de comporter un arbre de transmission qui soit souple tout en respectant les contraintes évoquées ci-dessus.  The device which is proposed here has the essential advantage of comprising a transmission shaft which is flexible while respecting the constraints mentioned above.

Dans sa définition la plus générale, l'invention 25 concerne un dispositif de mesure de couple comprenant un arbre déformable en torsion de moteur d'aéronef et un capteur mesurant un angle de déformation de l'arbre, caractérisé en ce que l'arbre est composé d'une pluralité impaire de tronçons concentriques, qui sont 30 unis en chaîne par des raccords établis alternativement à des extrémités opposées de l'arbre.  In its most general definition, the invention relates to a torque measuring device comprising a torsionally deformable shaft of an aircraft engine and a sensor measuring a deformation angle of the shaft, characterized in that the shaft is composed of an odd plurality of concentric sections, which are joined in a chain by fittings alternately established at opposite ends of the shaft.

L'invention sera maintenant décrite au moyen de la figure unique.  The invention will now be described by means of the single figure.

Un générateur des gaz porte la référence 1, un arbre de sortie sur lequel est implantée l'invention la 5 référence 2, et une hélice, liée au générateur de gaz 1 par l'arbre 2, la référence 3.  A gas generator has the reference 1, an output shaft on which the invention is located the reference 2, and a propeller, linked to the gas generator 1 by the shaft 2, the reference 3.

L'arbre 2 est composite. Cela signifie qu'il est formé d'une pluralité de tronçons concentriques, ici au nombre de trois et notés par les numéros de référence 10 4, 5 et 6. Le tronçon 4 est le tronçon au diamètre le plus grand de l'arbre 2, et il sort du générateur des gaz 1. Le tronçon 6 est le tronçon au diamètre le plus petit, et il est lié à l'hélice 3.  Tree 2 is composite. This means that it is formed of a plurality of concentric sections, here three in number and denoted by the reference numbers 10 4, 5 and 6. The section 4 is the section with the largest diameter of the shaft 2 , and it leaves the gas generator 1. The section 6 is the section with the smallest diameter, and it is linked to the propeller 3.

Conformément à l'invention, les tronçons 4, 5 et 6 15 sont liés en formant une chaîne, par des raccords en forme de couronnes soudées 7 et 8 dont la première unit les tronçons 4 et 5 et la seconde les tronçons 5 et 6.  According to the invention, the sections 4, 5 and 6 are linked by forming a chain, by fittings in the form of welded rings 7 and 8, the first of which unites the sections 4 and 5 and the second the sections 5 and 6.

Un point essentiel est que les raccords sont placés alternativement aux deux extrémités de l'assemblage, 20 c'est-à-dire du côté du générateur des gaz 1 et de l'hélice 3, ce qui donne à la succession des tronçons une disposition repliée qui n'accroît pas la longueur totale de l'arbre 2. Ainsi, un angle de déformation de l'arbre 2 en torsion beaucoup plus important sera 25 obtenu à couple déterminé sans changement notable des dimensions extérieures. La mesure pourra se faire à l'aide d'un capteur 9 comprenant une paire de lecteurs 10 et 11 disposés devant des disques gradués (notamment dentés) respectifs 12 et 13 dont l'un est fixé au 30 tronçon extérieur de 4 près du générateur des gaz 1 et l'autre est fixé à l'extrémité opposée de l'arbre 2, c'est-à-dire au tronçon 6 opposé de la chaîne, près de l'hélice 3. Les lecteurs 10 et 11 peuvent être placés l'un à côté de l'autre, pour peu que le disque 13 soit placé au bout d'une entretoise 14 en forme de manchon 5 fixée au tronçon 6 mais s'étendant autour de sensiblement toute la longueur de l'arbre 2. Un circuit électronique 15 non représenté en détail permet de mesurer l'angle de déformation par la différence des graduations des disques 12 et 13 qui sont passés devant 10 les lecteurs 10 et 11.  An essential point is that the fittings are placed alternately at the two ends of the assembly, that is to say on the side of the gas generator 1 and of the propeller 3, which gives the succession of sections an arrangement folded back which does not increase the total length of the shaft 2. Thus, a much larger angle of deformation of the shaft 2 in torsion will be obtained at a determined torque without significant change in the external dimensions. The measurement can be made using a sensor 9 comprising a pair of readers 10 and 11 disposed in front of respective graduated (in particular toothed) disks 12 and 13, one of which is fixed to the outer section of 4 near the generator. gas 1 and the other is attached to the opposite end of the shaft 2, that is to say to the opposite section 6 of the chain, near the propeller 3. The readers 10 and 11 can be placed one beside the other, provided that the disc 13 is placed at the end of a spacer 14 in the form of a sleeve 5 fixed to the section 6 but extending around substantially the entire length of the shaft 2. An electronic circuit 15 not shown in detail makes it possible to measure the angle of deformation by the difference in the graduations of the discs 12 and 13 which have passed in front of the readers 10 and 11.

Il est manifeste que l'invention n'est pas limitée à trois tronçons, mais qu'elle peut au contraire être appliquée avec cinq, sept, etc. tronçons concentriques, à condition qu'ils soient en nombre impair.  It is obvious that the invention is not limited to three sections, but that it can on the contrary be applied with five, seven, etc. concentric sections, provided they are odd in number.

Claims (1)

REVENDICATIONCLAIM Dispositif de mesure de couple comprenant un arbre (2) de moteur d'aéronef déformable en torsion et un 5 capteur (9) mesurant un angle de déformation de l'arbre, caractérisé en ce que l'arbre est composé d'une pluralité impaire de tronçons (4, 5, 6) concentriques, qui sont unis en chaîne par des raccords (7, 8) établis alternativement à des extrémités 10 opposées de l'arbre.  Torque measurement device comprising a torsionally deformable aircraft engine shaft (2) and a sensor (9) measuring a deformation angle of the shaft, characterized in that the shaft is composed of an odd plurality of concentric sections (4, 5, 6) which are joined in a chain by connections (7, 8) established alternately at opposite ends of the shaft.
FR0300479A 2003-01-17 2003-01-17 TORQUE MEASURING DEVICE FROM AN AIRCRAFT ENGINE Expired - Lifetime FR2850167B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0300479A FR2850167B1 (en) 2003-01-17 2003-01-17 TORQUE MEASURING DEVICE FROM AN AIRCRAFT ENGINE
PCT/FR2004/000104 WO2004067215A2 (en) 2003-01-17 2004-01-19 Device for measuring the angular deformation of an aircraft torque shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0300479A FR2850167B1 (en) 2003-01-17 2003-01-17 TORQUE MEASURING DEVICE FROM AN AIRCRAFT ENGINE

Publications (2)

Publication Number Publication Date
FR2850167A1 true FR2850167A1 (en) 2004-07-23
FR2850167B1 FR2850167B1 (en) 2005-04-08

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FR0300479A Expired - Lifetime FR2850167B1 (en) 2003-01-17 2003-01-17 TORQUE MEASURING DEVICE FROM AN AIRCRAFT ENGINE

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FR (1) FR2850167B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114739550A (en) * 2022-05-16 2022-07-12 横川机器人（深圳）有限公司 Automatic output torque measuring device of torque motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745891C (en) * 1940-12-01 1944-12-02 Calibration device for limit force wrench
US4682505A (en) * 1985-12-13 1987-07-28 Pratt & Whitney Canada Inc. Compact torque measurement system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745891C (en) * 1940-12-01 1944-12-02 Calibration device for limit force wrench
US4682505A (en) * 1985-12-13 1987-07-28 Pratt & Whitney Canada Inc. Compact torque measurement system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114739550A (en) * 2022-05-16 2022-07-12 横川机器人（深圳）有限公司 Automatic output torque measuring device of torque motor
CN114739550B (en) * 2022-05-16 2024-02-20 横川机器人（深圳）有限公司 Automatic measuring device for output torque of torque motor

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Publication number Publication date
FR2850167B1 (en) 2005-04-08

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