EP2539678A1 - Corps de mesure de force et procédé de mesure et de calcul - Google Patents

Corps de mesure de force et procédé de mesure et de calcul

Info

Publication number
EP2539678A1
EP2539678A1 EP11706808A EP11706808A EP2539678A1 EP 2539678 A1 EP2539678 A1 EP 2539678A1 EP 11706808 A EP11706808 A EP 11706808A EP 11706808 A EP11706808 A EP 11706808A EP 2539678 A1 EP2539678 A1 EP 2539678A1
Authority
EP
European Patent Office
Prior art keywords
measuring
force
calculating
measurement
acting
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.)
Withdrawn
Application number
EP11706808A
Other languages
German (de)
English (en)
Inventor
Bernd Futterer
Otto Pfeffer
Harald Böhler
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.)
Brosa AG
Original Assignee
Brosa AG
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 Brosa AG filed Critical Brosa AG
Priority to EP11706808A priority Critical patent/EP2539678A1/fr
Publication of EP2539678A1 publication Critical patent/EP2539678A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
    • G01L1/2218—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction
    • G01L1/2225—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction the direction being perpendicular to the central axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/14—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads
    • G01G19/18—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing suspended loads having electrical weight-sensitive devices
    • 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
    • G01G3/1408—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric
    • 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
    • G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators

Definitions

  • the invention relates to a cylindrical force-measuring body according to the preamble of claim 1 and to a measurement and calculation method according to the preambles of claims 8, 9, 10 and 12.
  • a dynamic measuring arrangement for a tilting moment a hoist jib known.
  • a force component which runs along a measuring direction and acts at a certain angle relative to a reference line is to be measured.
  • a measuring body is provided, which is connected to the lifting cylinder and bearing cups with the lifting arm, so that the power flow is passed through the measuring points of the measuring body.
  • four recesses which are arranged at an angle of 90 ° to each other, incorporated.
  • the strain gauges are mounted to measure the introduced voltages through which the recesses are deformed.
  • the known measuring arrangement is arranged at a precisely predetermined measuring point, namely between a crane jib and a hydraulic cylinder supporting it, and therefore can not be installed in deflection wheels or the like in order to reliably detect the forces prevailing there with constantly changing force profiles and force magnitudes.
  • a force measuring body of the type mentioned in such a way that it can be used for a measurement and calculation method for determining the radial and tangential forces.
  • a force-measuring body of the type mentioned should be designed such that a determination of the radially acting forces at changed angular positions of the resulting force profiles or the resulting tangential forces can be measured by this.
  • a measurement and calculation method of the type mentioned should be developed such that with the help of the force measuring body according to the invention, a measurement and calculation of the angular position of the resulting radially acting force and the amount of force with changing force curves and force loads or the measurement of torques or tangential forces is available.
  • a particularly advantageous application is given when a cylindrical force measuring body, for example as a bearing axis for a deflection wheel, is to be available at the free end of a crane extension arm.
  • the force measuring body it is necessary that two opposed recesses form a force measuring plane through which measuring forces perpendicular to it are measured.
  • the opposite recesses are therefore aligned on a common axis of symmetry, which is aligned perpendicular to the longitudinal axis of the force measuring body.
  • a plurality of mutually opposite recesses may be incorporated, so that a plurality of force measuring planes are formed, which extend at an angle between 90 ° and less to each other.
  • the force measuring body is operatively or non-positively in operative connection with a gear, because this ensures on the one hand, that between the measuring body and the gear wheel, a power flow for the input or output of the gear can be used and On the other hand, a force flux which can be detected by the strain gauges can be detected via the non-positive operative connection between the measuring body and the toothed wheel in the interior of the measuring body. Consequently, not only radially acting forces, but also tangentially extending forces that arise from torques in a toothing, for example, can be measured by the measuring arrangement.
  • 1a shows a first embodiment of a force measuring body with two circumferential grooves, in each of which four recesses are provided, and on which a deflection wheel is arranged between the two circumferential grooves, in plan view
  • 1 b shows the force measuring body according to FIG. 1 a along the section line Ib-Ib
  • FIG. 2b shows the force-measuring body according to FIG. 2a along the section line IIb-IIb
  • FIG. 3a shows a plan view of the third embodiment of a force measuring body with two pairs of recesses which are opposite one another and offset from one another by an angle of less than 90 °
  • Force measuring body according to Figure 3a in a schematically illustrated use in section, the force measuring body according to 3a along the section line lllc-fllc in an application example with a guide wheel
  • Figure 5 shows a fifth embodiment of a force-measuring body with a
  • FIGS. 1 a and 1 b show a force measuring body 11.
  • the body 11 serves as an axis and thus has a cylindrical outer contour.
  • two grooves 12 aligned about the longitudinal axis 4 of the body 11 are incorporated.
  • a cable 28 is to be guided by the deflection wheel 21.
  • the body 11 is for example associated with a deflection wheel 21 for its storage, by means of which the cable 28 for receiving loads is arranged at the free end of a crane extension arm.
  • the wrap angle ⁇ on the guide wheel 21 changes as a function of the crane arm tilt.
  • the force measuring body 11 is intended to serve for such angular changes, by which both the effective direction ⁇ and the magnitude of the resulting force FR can be determined.
  • the incorporated into the body 1 grooves 12 each have two recesses 13, at the bottom 27 each have at least one strain gauge 14 is attached. Accordingly, the recesses 13 and the strain gauges 14 jointly form a measuring point 15.
  • Two measuring points 15 lie opposite each other and form a common measuring plane 22 or 23, which runs perpendicular to the longitudinal axis 4. According to FIG. 1 b, the measurement of each measuring force takes place perpendicular to the respective measuring plane 22 or 23.
  • Through the center of the respective recess 13 extends an axis of symmetry 31, which is oriented perpendicular to the longitudinal axis 4. If two recesses 13 are arranged in alignment with each other, then the symmetry axes 31 of the opposite recesses 13 are aligned with each other.
  • Several of the measuring points 15 may be arranged on a common circular path 9, which runs concentrically around the longitudinal axis 4 of the force measuring body 11.
  • a reference notch 26 is incorporated, the angular position of which is permanently measured relative to a starting position of a Wtnkel- encoder 25.
  • the angular position of the reference notch 26 provides Information about the wrap angle, so that with knowledge of the Winkeiposition the reference notch 26 of the wrap angle of the rope 28 can be calculated on the guide wheel 21. With knowledge of the wrap angle, a calculation of the direction of action of the resultant force F R is therefore possible, with reference to one of the two force-measuring directions FI or F M 2.
  • the calculation of the amount of force for the resulting force FR is possible by means of the two measurement planes 22 and 23 and the force values of the measurement forces F M1 and F 2 determined therefrom, so that both the direction of force ⁇ and the amount of force are calculated with the aid of the force-measuring body 1 the resulting force F R can be measured and calculated.
  • the force measuring body 11 is configured such that in the two circumferential grooves 12 only two opposite recesses 13 are incorporated, which thus form a measuring plane 22.
  • the measuring force F is perpendicular to the measuring plane 22.
  • the angle encoder 25 the angular position of the body 11 is measured, so that again the effective direction ⁇ of a resultant force FR can be measured from the measuring force direction F and calculated.
  • the measuring points 15 and the measurement planes 22 or 23 are actuated in succession in order to detect the force measurement amounts F M i or F M2 acting on them. Together with the measurement of the angular position of the reference notch 26 by the angle sensor 25 then calculations can be made to determine the effective direction ⁇ of the resultant force F R. Also by measuring the force measurement amounts FMI and F M 2 are then in knowledge of the effective direction ⁇ the resulting force FR calculations are possible with respect to the force amount of the resultant force F R.
  • FIG. 3b shows an application in which the body 11 is already subjected to the corresponding measuring forces FMI and Fm;
  • the use case is shown in Figure 3c that on the body 1 1 via the bearing 24, the guide wheel 21 is rotatably supported.
  • the application shown in Figure 3b is intended to illustrate that the force measuring body 11 can be used for example as an axle or as a shaft for a guide wheel 21, a gear 21 'or the like.
  • FIG. 5 shows a non-positive operative connection between the force-measuring body 11 and the toothed wheel 21 '.
  • the force measuring body 1 is namely connected via a feather key 41 with the gear 21 '.
  • a groove 42 and in the gear 21 'a groove 42' incorporated, which are aligned in the mounted state to each other and into which the key 41 is inserted.
  • the measuring body 11 thus acts as a drive or output shaft, because a tangential force FT is transmitted either from the gear 21 'on the body 11 or vice versa.
  • the feather key 41 therefore receives the tangential force FT and supports it on an edge 43 'of the body 11, so that it is forwarded via the flank 43 of the groove 42 to the body 11.
  • tangential force FT arises torsions, shearing or tension, which are detected by the strain gauges 14 which are mounted in the recess 13 both at the bottom 27 and / or on one of the side wall 29, so that by the strain gauges 14 either directly on the gear 21 'acting torque detectable or indirectly via the geometric distance ratios, the tangential force F T can be measured.
  • a measuring body 11 serves, for example, to detect the different torque curves that prevail between an engine and a transmission or between the transmission and an output shaft 11.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

La présente invention concerne un corps de mesure de force (11) cylindrique dans lequel est pratiqué au moins un évidement (13) dans lequel sont fixées une ou plusieurs jauges extensométriques (14) qui forment un emplacement de mesure (15) avec l'évidement (13). L'invention a pour objet de permettre la mise en oeuvre d'un procédé de mesure et de calcul destiné à déterminer des forces qui agissent radialement et tangentiellement. A cet effet : l'évidement (13) se trouve dans une gorge (12); la gorge (12) se trouve entre deux évidements (13) voisins; deux axes de symétrie (31) de deux évidements (13) opposés sont alignés et perpendiculaires à l'axe longitudinal (4) du corps (11); au moins l'une des jauges extensométriques (14) est fixée sur le fond (27) et/ou sur la paroi latérale (29) des évidements (13); et une roue de renvoi (21) ou une roue dentée (21') prend appui sur le corps (11).
EP11706808A 2010-02-25 2011-02-24 Corps de mesure de force et procédé de mesure et de calcul Withdrawn EP2539678A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11706808A EP2539678A1 (fr) 2010-02-25 2011-02-24 Corps de mesure de force et procédé de mesure et de calcul

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10154732.1A EP2362201B1 (fr) 2010-02-25 2010-02-25 Douille de mesure de force ainsi que de dispositif de mesure de force
EP11706808A EP2539678A1 (fr) 2010-02-25 2011-02-24 Corps de mesure de force et procédé de mesure et de calcul
PCT/EP2011/052723 WO2011104293A1 (fr) 2010-02-25 2011-02-24 Corps de mesure de force et procédé de mesure et de calcul

Publications (1)

Publication Number Publication Date
EP2539678A1 true EP2539678A1 (fr) 2013-01-02

Family

ID=42341652

Family Applications (3)

Application Number Title Priority Date Filing Date
EP10154732.1A Active EP2362201B1 (fr) 2010-02-25 2010-02-25 Douille de mesure de force ainsi que de dispositif de mesure de force
EP11705554A Withdrawn EP2539677A1 (fr) 2010-02-25 2011-02-24 Manchon de mesure de force et procédé de mesure et de calcul
EP11706808A Withdrawn EP2539678A1 (fr) 2010-02-25 2011-02-24 Corps de mesure de force et procédé de mesure et de calcul

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP10154732.1A Active EP2362201B1 (fr) 2010-02-25 2010-02-25 Douille de mesure de force ainsi que de dispositif de mesure de force
EP11705554A Withdrawn EP2539677A1 (fr) 2010-02-25 2011-02-24 Manchon de mesure de force et procédé de mesure et de calcul

Country Status (2)

Country Link
EP (3) EP2362201B1 (fr)
WO (2) WO2011104293A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN103213904B (zh) * 2012-01-20 2015-04-01 宝山钢铁股份有限公司 起重机械取物部件危险断面检测装置
DE102015102072B3 (de) 2015-02-13 2016-05-19 Brosa Ag Kraftaufnehmersystem zur gleichzeitigen Bestimmung von aus unterschiedlichen Richtungen einwirkenden Kräften
DE102016200732B3 (de) * 2016-01-20 2017-06-29 Schaeffler Technologies AG & Co. KG Messanordnung zur Kraft- bzw. Drehmomentmessung für ein Maschinenelement und Maschinenelementanordnung mit einer derartigen Messanordnung
DE102017104758B4 (de) 2017-03-07 2018-09-20 Brosa Ag Kraftaufnehmersystem zum Messen von Scherkräften auf einen Kran-Rollenkopf
EP3379222B1 (fr) 2017-03-22 2020-12-30 Methode Electronics Malta Ltd. Ensemble de capteur à base magnétoélastique
DE102017110229B4 (de) * 2017-05-11 2021-10-14 Brosa Ag Kraftmesshülse für mehrfache Kraftmessung
DE102017111097B4 (de) * 2017-05-22 2020-08-06 Brosa Ag Redundante Kraftmessachse mit räumlich getrennten Messanordnungen
DE102017114168A1 (de) 2017-06-27 2018-06-28 Schaeffler Technologies AG & Co. KG Sensoreinrichtung zur Erfassung der auf eine Anhängerkupplung wirkenden Kräfte und Anhängerkupplung mit dieser
US11135882B2 (en) 2018-02-27 2021-10-05 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11221262B2 (en) 2018-02-27 2022-01-11 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11084342B2 (en) 2018-02-27 2021-08-10 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
US11491832B2 (en) 2018-02-27 2022-11-08 Methode Electronics, Inc. Towing systems and methods using magnetic field sensing
EP3758959A4 (fr) 2018-02-27 2022-03-09 Methode Electronics, Inc. Systèmes et procédés de remorquage utilisant la détection magnétique

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US4474060A (en) * 1982-07-12 1984-10-02 Goodyear Aerospace Corporation Torque readout sensor
DE3617085A1 (de) * 1985-10-21 1987-11-26 Messerschmitt Boelkow Blohm Vorrichtung zum messen von in eisenbahnschienen oder aehnlichen belasteten balken wirkenden kraeften
JP3901317B2 (ja) * 1997-12-10 2007-04-04 本田技研工業株式会社 車輪作用力測定装置および車輪作用力測定方法
DE19960786A1 (de) * 1999-12-16 2001-06-21 Schenck Process Gmbh Radialkraftaufnehmer
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Also Published As

Publication number Publication date
EP2362201A1 (fr) 2011-08-31
EP2362201B1 (fr) 2016-02-10
WO2011104293A1 (fr) 2011-09-01
EP2539677A1 (fr) 2013-01-02
WO2011104291A1 (fr) 2011-09-01

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