• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a torque measuring device having at least one torque measuring unit (4) which is arranged between a drive machine (1) and a loading unit (3) in a drive train (6). In order to be able to carry out precise measurements over a wide torque range, it is provided that in addition to a primary torque measuring unit (4) at least one secondary torque measuring unit (7) in the drive train (6) is arranged, wherein the primary and the secondary torque measuring unit (4, 7) serially are arranged one behind the other, and wherein preferably the two torque measuring units (4, 7) are designed for different torque ranges.
    公开号:AT510705A4
    申请号:T202011
    申请日:2011-01-05
    公开日:2012-06-15
    发明作者:Werner Ing Faustmann；Franz Pucher
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    - 1 - 56131
    The invention relates to a torque measuring device with at least one torque measuring unit, which is arranged between a drive machine and a loading unit in a drive shaft train. For the loading of drive motors, loading units with included torque measuring device are used on the corresponding test stands. For the load of drive machines, the design of the torque measuring unit of the torque measuring device must always be made to the maximum value with respect to the torque of the drive machine. The torque measuring unit is either integrated in the loading device, wherein the stator of this Beiastungseinrichtung is rotatably mounted in a housing and supported by a load cell, wherein the force can be converted directly to the applied motor torque. EP 1 170 577 A2 discloses a torque measuring device in which the torque measuring unit is arranged directly on the drive shaft of the loading device.
    Known measuring devices have the disadvantage of a large absolute measuring tolerance at low torques.
    The object of the invention is to minimize the disadvantage of large absolute measurement tolerance at low torques and to provide a torque measuring device which has a high measuring accuracy over a wide torque range.
    According to the invention this is achieved in that at least two torque measuring units are arranged serially in series in the drive train, wherein a second torque measuring unit between the prime mover and a first torque measuring device is arranged, and wherein preferably the two torque measuring units are designed for different torque ranges.
    The secondary torque measuring unit can - compared to the primary torque measuring unit - have a lower measured end value and / or be designed for a lower maximum torque.
    It is particularly advantageous if the primary torque measuring unit is designed for an upper design torque value which corresponds to the maximum possible torque in the drive train, and the secondary torque measuring unit is designed for a lower design torque value "* * * *« · · »· Μ t · · ** ·· * ·· «·· * ··« ι < * ···· * · ··· * * · ··············································································································································································································································· upper design torque value corresponds.
    The first torque measuring unit can be integrated into a load unit for an engine test bench. Preferably, the second torque measuring device is connected upstream of the loading unit, wherein the torque measuring unit can be designed as a torque measuring flange. The torque measuring flange may have a first region connected to the drive train and a second region, wherein the second region is rotationally elastically connected to the first region.
    In order to avoid damaging the secondary torque measuring unit due to overload in operating ranges with a torque introduction which is above the maximum value of this secondary torque measuring unit, it can be provided that the second torque measuring unit has an end stop for torques above the lower design torque value. The end stop represents a mechanical blockage over which the torque is transmitted from the lower design torque value. The end stop can be formed by at least one sleeve which at least partially surrounds a fastening screw for fastening the torque measuring flange on the drive train in the second region of the torque measuring flange. In at least one first position, the sleeve is exposed relative to the second region of the torque measuring flange , In at least a second position from a torque which is greater than the lower design torque, the sleeve abuts against a bore of the second region of the torque-measuring flange. From a predetermined torque on the design torque, the two areas are connected to each other via the end stop torsionally rigid.
    In the operating ranges above the lower design torque, the primary torque measurement unit of the load unit assumes the torque measurement in its original form.
    The advantage of this arrangement lies in the significantly better absolute measurement accuracy at low torques with unrestricted maximum torque.
    The invention will be explained in more detail below with reference to FIGS.
    2 shows a secondary torque measuring unit - 3 - the torque measuring device according to the invention in an exploded view, Fig. 3, the secondary torque measuring unit in an end view and Fig. 4, the secondary torque measuring unit in a section according to Line IV-IV in Fig. 3 in an embodiment.
    As shown schematically in FIG. 1, the power and the torque of a drive machine 1, for example an internal combustion engine, are detected on an engine test stand 2 with the aid of a load unit 3. The stator of this loading unit 3 is supported by a primary torque measuring unit 4, for example a load cell, against the housing 5 of the loading unit 3. The loading unit 3 is preceded by a secondary torque measuring unit 7 in the drive train 1 coming from the drive machine 1, which is formed by a torque measuring flange 8 in the exemplary embodiment. The torque measuring flange 8 is connected to the drive shaft 6 via a shaft connection flange 9, the connection being made via a plurality of fastening screws 10 engaging in a first region 8a of the torque measuring flange 8. The fastening screws 10 arranged parallel to the axis of rotation 1a protrude axially as far as a second region 8b of the torque-measuring flange 8.
    Between each fastening screw 10 and the second region 8b of the torque-measuring flange 8 is in each case an end stop 13 forming sleeve 11 is arranged, wherein the sleeves 11 serve as a mechanical block to avoid damage to the secondary torque measuring unit 7. The torque measuring flange 8 has at maximum load on a twist angle, which must not be exceeded. In order to avoid this, the sleeves 11 are made smaller by an arithmetical measure than the corresponding bores 12 in the second region 8b of the torque measuring flange 8 around the screw heads 10a of the fastening screws 10. Thus, the first region 8a of the fastening screws 10 is secured Torque Messfiansches 8 on the sleeves 11 in the bores 12 of the second portion 8b of the torque-Measuringfes 8 supports and so transmits a torque which would lead to damage of the secondary measuring unit 7 without this end stop 13.
    The secondary torque measuring unit 7 is used for measuring the torque in the lower torque range. For this purpose, the secondary torque measuring unit 7 is designed for a lower design torque, which is about one quarter of the maximum design torque of the primary torque measuring unit 4. After reaching a torque which corresponds to the lower output torque of the secondary torque measuring unit 7, the torque is transmitted via a positive connection between the sleeves 11 and the corresponding second holes 8b in the torque measuring flange 8 of the secondary torque measuring unit 7 directly to the primary Torque measuring unit 4 transmitted - the measurement of the torque in the upper torque range is thus exclusively on the primary torque unit 4th
    By pre-switching the secondary torque measuring unit 7, a much better accuracy of measurement can be obtained at low torques with unrestricted maximum torque.
    权利要求:
    Claims (8)
    [1]
    1. A torque measuring device having at least one torque measuring unit (4) which is arranged between a drive machine (1) and a loading unit (3) in a drive train (6), characterized in that in addition to a primary torque measuring unit (4) at least a secondary torque measuring unit (7) is arranged in the drive train (6), wherein the primary and the secondary torque measuring unit (4, 7) are arranged serially connected in series, and wherein preferably the two torque measuring units (4, 7) are designed for different torque ranges.
    [2]
    2. torque measuring device according to claim 1, characterized in that the secondary torque measuring unit (7) - in comparison with the primary torque measuring unit (4) - has a lower Messendwert and / or is designed for a lower maximum torque.
    [3]
    3. A torque measuring device according to claim 1 or 2, characterized in that the primary torque measuring unit (4) is designed for an upper design torque value corresponding to the maximum possible torque in the drive train (6), and that the secondary torque measuring unit (7) to a lower design torque value which is less than the upper design torque value, and which preferably corresponds to at most a 50%, more preferably at most about 25%, of the upper design torque value.
    [4]
    4. torque measuring device according to one of claims 1 to 3, characterized in that the primary torque measuring unit (4) is integrated in a load unit (3) for a motor test bench.
    [5]
    5. torque measuring device according to one of claims 1 to 4, characterized in that the secondary torque measuring unit (7) as a torque measuring flange (8) is formed.
    [6]
    6. torque measuring device according to one of claims 1 to 5, characterized in that the secondary torque measuring unit (7) has an end stop (13) for torques on the lower design torque value.
    [7]
    7. torque measuring device according to claim 6, characterized in that the torque-measuring flange (8) has two torsionally elastic interconnected areas (8a, 8b), wherein from a predetermined rotation of the torque over the design 6.6 the two areas (8a, 8b) are rigidly connected to each other via the end stop (13).
    [8]
    8. Drehmomentmessinnchtung according to claim 6 or 7, characterized in that the end stop (13) by at least one sleeve (11) is formed, which surrounds a fixed to the first region (8 a) connected to the fastening screw (10), wherein in at least a first Steep the sleeve (11) relative to the second region (8b) of the torque-measuring flange (8) free and in at least a second position from a torque which is greater than the lower design torque, the second portion (8b) of the torque-measuring flange (8) is present.

    n 2011 01 05 Fu
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    同族专利:
    公开号 | 公开日
    AT510705B1|2012-06-15|
    WO2012093134A1|2012-07-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2147974A1|1971-09-25|1973-03-29|Karl H Kessler|TORQUE TRANSDUCER|
    DE3705496A1|1986-02-21|1987-08-27|Horiba Instr Inc|TORQUE MEASURING DEVICE WITH TWO SOCKETS FOR DIFFERENT AREAS|
    DE4004589A1|1990-02-15|1991-08-22|Bosch Gmbh Robert|MEASURING DEVICE ON SHAFTS FOR DETERMINING TORQUE AND / OR TURNING ANGLE|
    DE4004590A1|1990-02-15|1991-08-22|Bosch Gmbh Robert|Torque measuring device for machine component|
    DE10304359A1|2002-04-12|2003-11-06|Deutsch Zentr Luft & Raumfahrt|Torque sensor for an electric motor comprises a monolithic disk shaped receiving component with connection legs linking inner and outer flanges and having sensors attached to them, said component being inserted in the motor drive|
    EP1382951A2|2002-07-09|2004-01-21|Eduard Wille GmbH & Co KG|Torque-Testtool|
    DD143826A1|1979-06-12|1980-09-10|Alfred Lotze|TORQUE MEASURING DEVICE WITH SEVERAL MEASURING RANGES|
    JPS56133637A|1980-03-24|1981-10-19|Agency Of Ind Science & Technol|Torque meter for grinder|
    DD250996A1|1986-07-07|1987-10-28|Forsch Entwicklung Und Ratio D|MULTI-TURN TORQUE TORSION TRANSFORMER FOR TORQUE MEASURING EQUIPMENT|
    JP3448738B2|2000-07-03|2003-09-22|ミネベア株式会社|Rotating body torque measuring device and torque measuring method|
    JP2002139391A|2000-11-02|2002-05-17|Exedy Corp|Torque-detecting device|
    AT5656U3|2002-06-20|2003-06-25|Dienstleistungsbetr Htbl U Va|TORQUE SENSOR WITH ADJUSTABLE MEASURING RANGE|
    US8042412B2|2008-06-25|2011-10-25|General Electric Company|Turbomachinery system fiberoptic multi-parameter sensing system and method|
    DE102010034638A1|2010-03-03|2011-09-08|GIF Gesellschaft für Industrieforschung mbH|Torquemeter|DE102014223783B4|2014-11-21|2017-08-03|Siemens Aktiengesellschaft|Detecting forces and torques on a drive device|
    DE102014223782B4|2014-11-21|2016-07-21|Siemens Aktiengesellschaft|Detecting forces and torques on a drive device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT202011A|AT510705B1|2011-01-05|2011-01-05|TORQUE MEASURING DEVICE|AT202011A| AT510705B1|2011-01-05|2011-01-05|TORQUE MEASURING DEVICE|
    PCT/EP2012/050076| WO2012093134A1|2011-01-05|2012-01-04|Torque measuring device|
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