EP2352978A1 - Dispositif de transmission de couples - Google Patents

Dispositif de transmission de couples

Info

Publication number
EP2352978A1
EP2352978A1 EP09777934A EP09777934A EP2352978A1 EP 2352978 A1 EP2352978 A1 EP 2352978A1 EP 09777934 A EP09777934 A EP 09777934A EP 09777934 A EP09777934 A EP 09777934A EP 2352978 A1 EP2352978 A1 EP 2352978A1
Authority
EP
European Patent Office
Prior art keywords
shaft
torque
coil
bearing block
bearing
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Withdrawn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
EP09777934A
Other languages
German (de)
English (en)
Inventor
Andreas Eicke
Joachim Heidemann
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.)
ThyssenKrupp EGM GmbH
Original Assignee
ThyssenKrupp EGM GmbH
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 ThyssenKrupp EGM GmbH filed Critical ThyssenKrupp EGM GmbH
Publication of EP2352978A1 publication Critical patent/EP2352978A1/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Withdrawn legal-status Critical Current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
    • 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
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/105—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving inductive means
    • 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
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means

Definitions

  • the invention relates to a device for transmitting torque referred to in the preamble of claim 1 Art.
  • Such devices are particularly known in the field of measuring technology, where they receive a torque at their input, which they transmit to the output of the device, where the input torque can be taken as output torque.
  • a shaft which is rotatably mounted.
  • rolling and plain bearings are used, which are designed such that the highest possible efficiency of the device is achieved.
  • a torque-transmitting shaft is first connected on the input side to a drive, which generates a torque.
  • the drive can consist, for example, of a motor or a geared motor combination, wherein different types of motors and gearboxes can be used.
  • the input torque of the device can also be generated in various ways and is not limited to the torque generation by a motor or a motor gear combination.
  • an output is arranged at the output of the device for transmitting torque, which serves to absorb the torque applied to the output of the device.
  • the output can serve to generate a load, with which the device is acted upon.
  • this arrangement is used, for example, to measure the torque generated by the drive.
  • the known devices for transmitting torque at the output of the device measuring means are arranged to determine the voltage applied to the output of the device torque and close it to the torque generated by the drive.
  • the known devices for transmitting torque have a torque transmitting shaft, a bearing block for supporting the shaft and measuring means for measuring a voltage applied to the shaft torque.
  • the invention has for its object to provide a device for transmitting torque referred to in the preamble of claim 1, in which the size is significantly reduced, whereby the space required also in the same way can be reduced.
  • the invention solves the underlying object in that the measuring means are at least partially integrated in the bearing block. This makes it possible to make the device much more compact, resulting in advantages in size as well as in the handling of the device.
  • the term component is also understood to mean an assembly or a product.
  • the term component also denotes an effective relationship between various elements, components, assemblies and products.
  • the shaft has indicator means for a voltage applied to the shaft torque. This gives rise to the advantage that the torque applied to the shaft can be measured in a simple manner.
  • the indicator means have at least one magnetized shaft section. This ensures that the transmitted through the shaft
  • Torque is measured directly on the shaft, which, for example, mechanical disturbances can be turned off. In addition, this ensures that the components necessary for the measurements can be reduced.
  • the measurement of a torque using a magnetized shaft section is known from EP 1 203 209 B1 and EP 1 483 551 B1 and will therefore not be explained in more detail here.
  • Another advantage is an improved adaptation of the device to the load acting on the device by the torque to be transmitted.
  • the adaptation of the device to the respective loads can be achieved in a simple manner that, for example, the torque transmitting Shaft is replaced by a matched to the expected loads shaft.
  • the downtime of the device can be minimized, for example, when used improperly.
  • a further advantageous embodiment of the invention is that the magnetized shaft section is magnetized long-term. This results in the advantage that the shaft has a constant magnetic field, whereby the measurements of the torque transmitted through the shaft are inexpensive and sufficiently precise feasible.
  • the bearing block of a further advantageous development of the invention has at least one first shaft bearing and at least one second shaft bearing, so that the advantageous development is characterized in that the magnetized shaft section is arranged between the first and second shaft bearings.
  • a further advantageous development of the invention pelg is that the magnetized shaft portion is arranged equidistant from the first and second shaft bearings. Thereby, the torque transmitting shaft can be performed symmetrically, whereby a simple adjustment and a simplified Austau- see the shaft is possible.
  • the measuring means at least one coil for generating a voltage applied to the shaft at a change in torque have variable magnetic field.
  • the application of torque to the torque transmitting shaft causes the variable magnetic field generated by the coil to be affected.
  • the torque transmitted by the shaft can be closed in a simple manner, so that a low-maintenance device can be realized.
  • the device can be calibrated easily and inexpensively.
  • An expedient development of the invention consists in that the measuring means have at least one coil amplifier for amplifying the coil supply signals.
  • the coil amplifier is arranged on the bearing block, preferably integrated in the bearing block. In this way it is possible to make the arrangement of the coil amplifier in a small space. This also makes it possible to minimize the distance between coil amplifier and coil, whereby disturbances of the coil supply signal are significantly reduced.
  • the holding means can be removed, in particular in the assembled state of the bearing block the holding means can be removed. This ensures that the time required, for example, for a Exchange of the coil is significantly reduced. In addition, it is achieved that the device is quickly and easily adaptable to the requirements of the measurement. It also makes it possible to reduce maintenance times and also reduce maintenance costs.
  • the measuring means have at least one measuring transducer which is integrated in the bearing block.
  • the transducer it is possible to determine a measured variable, can be closed by the transmitted torque through the shaft. It is advantageous to use an electronic measuring transducer, which enables a computer-aided logging of the measured variable and thus simplifies the later evaluation of the measurement.
  • a further advantageous embodiment of the invention is characterized in that the sensor is a magnetic field sensor for sensing a voltage applied to the shaft by a change
  • Torque caused change of a magnetic field In this way, it is achieved that a change in the magnetic field is measurable, which can be closed to the voltage applied to the shaft torque, which affects the magnetic field. This makes it possible to carry out the measurement almost exclusively electronically, whereby a mechanical wear of the device is minimized or excluded. As a result, the life of the device is improved.
  • an advantageous development of the invention provides that the material of the shaft 50NiCrl3 and / or 45CrNiMol6 is or contains. Due to the material selection for the shaft based on the materials mentioned, it is achieved that the shaft is very hard is well adaptable to the device requirement. In addition, the shaft can be processed very well, whereby the manufacturing costs can be reduced. Furthermore, it has been found that the materials mentioned are very well suited for a long-term magnetization of the shaft.
  • An expedient development of the invention provides that the shaft is at least partially through hardened and in particular at least in sections a hardness of ⁇ 58 HRC according to DIN EN 10109 has.
  • the hardening of the shaft improves the mechanical properties for the measurement of the torque, thereby increasing the range of application of the device.
  • the embodiment of the device 2 has a bearing block 4, in which a torque transmitting shaft 6 is rotatably supported by a first shaft bearing 8 and a second shaft bearing 10.
  • a first shaft bearing 8 and the second shaft bearing 10 a deep groove ball bearing is used in each case.
  • the torque-transmitting shaft 6 transmits a drive torque 12, which is generated by a drive.
  • the drive and the connection of the torque transmitting shaft 6 to the drive are not shown for clarity.
  • the drive torque 12 is transmitted through the torque transmitting shaft 6 and delivered as output torque 14 at the shaft output end.
  • the shaft output end is also not shown for simplicity of illustration.
  • the torque transmitting shaft 6 is constructed symmetrically to a center plane 16 between the first shaft bearing 8 and the second shaft bearing 10. To the center of the first shaft bearing 8 and the second shaft bearing 10, the torque transmitting shaft 6 has a magnetized shaft portion 18 which is arranged in a shaft shoulder 20. The magnetized wave portion 18 is thus arranged equidistant from the first and second shaft bearings 8, 10.
  • a coil 22 is arranged, which generates an electric magnetic field.
  • the axis 24 of the coil is aligned parallel to the axial direction of the torque - transmitting shaft 6 and spaced therefrom.
  • the coil 22 is disposed in the bearing block 4, that upon loading of the torque transmitting shaft 6, the electric field generated by the coil 22 is influenced.
  • a coil amplifier 26 which amplifies the coil feeding signal.
  • the coil amplifier 26 is in turn connected to a signal source, which is not shown for clarity.
  • the coil amplifier 26 is arranged on the bearing block 4 by being screwed to the outer surface of the bearing block.
  • the coil amplifier is shown symbolized in the figure for clarity, so that its arrangement is not shown on the bearing block.
  • the bobbin 22 In order that the bobbin 22 can be removed more quickly from the bearing block 4, it is held in a holding means, which is formed by the bearing block 4 having a recess 28 into which the bobbin 22 is fastened by means of a cover 30. This makes it possible, by dissolving the cover 30 to replace the coil 22 non-destructive.
  • a transducer For measuring the electric magnetic field generated by the coil 22, a transducer is used, which is arranged in close proximity to the coil 22. By measuring the electrical magnetic field of the coil 22 through the transducer, it is possible to detect changes in the electrical magnetic field of the coil 22.
  • the transducer is connected in the embodiment with computer-aided evaluation, which are not shown for clarity.
  • the transducer is formed by a magnetic field sensor 32, by which it is possible to detect the changes in the electric magnetic field as a result of an applied by the applied torque 12 magnetic field of the magnetized shaft portion 18.
  • the torque transmitting shaft 6 is in the Embodiment of the material 50NiCrl3.
  • the shaft 6 is through hardened and has a hardness of 60 HRC according to DIN EN 10109.
  • the magnetized shaft portion 18 has a length measured in the axial direction of the shaft 6 of 50 mm in this embodiment. Furthermore, the shaft shoulder 20 has an axial length of 60 mm. The shaft diameter is 40 mm in this area.
  • the device 2 is not limited to the details mentioned. Thus, instead of a coil 22, a coil pair or a plurality of coil pairs can be used. Preference is given to the use of two pairs of coils which are arranged offset from each other in the radial direction about the magnetized shaft section 18 by 180 °.
  • the orientation of the coil 22 and the coils can be made in different ways, so that z. B. the coil axis 24 is arranged coaxially with the shaft 6.
  • the device 2 can in particular be part of a test bench for the functional testing of drive trains and / or components of drive trains, for example a transmission test bench for the functional testing of drives. In such a test stand, the device 2 serves to occurring

Landscapes

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

Abstract

L'invention concerne un dispositif (2) de transmission de couples, avec un arbre (6) fournissant un couple et un palier d'appui (4) recevant l'arbre (6). Le dispositif comprend un moyen de mesure destiné à mesurer un couple au niveau de l'arbre (6) et au moins partiellement intégré dans le palier d'appui (4).
EP09777934A 2008-11-07 2009-08-18 Dispositif de transmission de couples Withdrawn EP2352978A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008056302A DE102008056302A1 (de) 2008-11-07 2008-11-07 Vorrichtung zur Übertragung von Drehmomenten
PCT/EP2009/005966 WO2010051871A1 (fr) 2008-11-07 2009-08-18 Dispositif de transmission de couples

Publications (1)

Publication Number Publication Date
EP2352978A1 true EP2352978A1 (fr) 2011-08-10

Family

ID=41170093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09777934A Withdrawn EP2352978A1 (fr) 2008-11-07 2009-08-18 Dispositif de transmission de couples

Country Status (5)

Country Link
US (1) US20120118081A1 (fr)
EP (1) EP2352978A1 (fr)
CN (1) CN102216748B (fr)
DE (1) DE102008056302A1 (fr)
WO (1) WO2010051871A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012215085A1 (de) * 2012-08-24 2014-05-28 Schaeffler Technologies Gmbh & Co. Kg Lagerring für ein Lager, insbesondere für ein Wälz- oder Gleitlager
DE102013219079A1 (de) * 2013-09-23 2015-03-26 Schaeffler Technologies Gmbh & Co. Kg Bauteil, Vorrichtung und Verfahren zur Messung einer Materialspannung mittels Magnetostriktion
DE102013018700B4 (de) * 2013-11-08 2020-10-08 Schaeffler Technologies AG & Co. KG Einbauelement zur Aufnahme von Messmitteln
US9856967B2 (en) 2014-04-11 2018-01-02 Cnh Industrial America Llc Torque estimation for work machine power train
CN105823587A (zh) * 2016-03-22 2016-08-03 陈功 一种静力起吊机水平支撑轴弯矩检测器
JP6740908B2 (ja) * 2017-01-11 2020-08-19 日立金属株式会社 磁歪式トルクセンサ用シャフトの製造方法
JP6880469B2 (ja) * 2020-07-03 2021-06-02 日立金属株式会社 磁歪式トルクセンサ用シャフトの製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118153A1 (de) * 2000-04-17 2001-10-18 Suzuki Motor Co Magnetostriktions-Drehmomentsensor zum Detektieren der Lenkkraft

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US4817444A (en) * 1986-03-03 1989-04-04 Honda Giken Kogyo Kabushiki Kaisha Torque sensor
CN1016731B (zh) * 1987-12-28 1992-05-20 久保田铁工株式会社 扭矩测量装置
JP2811980B2 (ja) 1991-03-04 1998-10-15 松下電器産業株式会社 トルクセンサ
DE19638191A1 (de) * 1996-09-19 1998-03-26 Karl H Kessler Drehmomentsensor
US6370967B1 (en) * 1998-05-29 2002-04-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Torque sensor with joint means for producing a consistent magnetic effect
GB9919065D0 (en) 1999-08-12 1999-10-13 Fast Technology Gmbh Transducer Element
KR100397712B1 (ko) * 2001-03-16 2003-09-13 주식회사 만도 차량용 토크센서
GB0204213D0 (en) 2002-02-22 2002-04-10 Fast Technology Ag Pulsed torque measurement
AU2003237876A1 (en) * 2002-05-15 2003-12-02 The Timken Company Eddy current sensor assembly for shaft torque measurement
US6959781B2 (en) * 2003-02-04 2005-11-01 Honda Motor Co., Ltd. Rotational torque detection mechanism and power steering apparatus
US7685891B2 (en) * 2003-12-30 2010-03-30 Nct Engineering Gmbh Magnetic principle based torque sensor
US20070247224A1 (en) * 2004-08-02 2007-10-25 Lutz May Sensor Electronic
JP5180483B2 (ja) * 2006-03-28 2013-04-10 本田技研工業株式会社 トルクセンサの製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118153A1 (de) * 2000-04-17 2001-10-18 Suzuki Motor Co Magnetostriktions-Drehmomentsensor zum Detektieren der Lenkkraft

Also Published As

Publication number Publication date
CN102216748A (zh) 2011-10-12
CN102216748B (zh) 2014-12-31
WO2010051871A1 (fr) 2010-05-14
US20120118081A1 (en) 2012-05-17
DE102008056302A1 (de) 2010-05-12

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