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WO2018158268A1 - Dispositif de blocage - Google Patents

Dispositif de blocage Download PDF

Info

Publication number
WO2018158268A1
WO2018158268A1 PCT/EP2018/054841 EP2018054841W WO2018158268A1 WO 2018158268 A1 WO2018158268 A1 WO 2018158268A1 EP 2018054841 W EP2018054841 W EP 2018054841W WO 2018158268 A1 WO2018158268 A1 WO 2018158268A1
Authority
WO
WIPO (PCT)
Prior art keywords
test
blocking device
drive
roller
force
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.)
Ceased
Application number
PCT/EP2018/054841
Other languages
German (de)
English (en)
Inventor
Josef Femböck
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.)
Cartesy GmbH
Original Assignee
Cartesy 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=58490115&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018158268(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cartesy GmbH filed Critical Cartesy GmbH
Publication of WO2018158268A1 publication Critical patent/WO2018158268A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
    • 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
    • G01L5/20—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring wheel side-thrust
    • 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
    • G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
    • G01L5/282—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes the vehicle wheels cooperating with rotatable rolls
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
    • G01M17/0074—Details, e.g. roller construction, vehicle restraining devices

Definitions

  • the invention relates to a blocking device for blocking a drive of a test roller of a test stand. Furthermore, the invention relates to a drive, a test bed and a method for testing and / or calibrating a test stand.
  • test benches e.g. Rolling test stands
  • forces are measured, which during acceleration and braking, i. at a negative acceleration, affect the tire treads.
  • a motor vehicle wheel stands on a test roller, which is connected to a drive motor via a drive shaft.
  • the drive motor is mounted pendulum.
  • a counter support is designed as a force sensor. If the motor vehicle wheel is accelerated or decelerated, the resulting force is transmitted to the test roller via a force introduction area. This force is measured via the counterstay, ie the force sensor.
  • the measurement of the force takes place indirectly via a torque measurement.
  • a first lever extends from the center of the test roller to the area of force application on the roller surface.
  • a second lever extends from the center of the test roller to the counterstay. The force on the counter-support results in the ratio of the first to the second lever.
  • a reference force is initiated directly on the force sensor. This is done by attaching power levers on which a weight is applied, or by force lever, in whose power flow a reference force sensor is installed.
  • the disadvantage of this is that the two real mechanical levers are not taken into account. These are calculated once and accepted as given.
  • test levers with reference weights also have the disadvantage that all weights are subject to gravitational attraction. Therefore, the local gravitational value should actually be known and taken into account.
  • test levers loaded with reference weights are also subject to many other influences that arise when loading. Thus, any load causes the lever to deform, which in turn results in a change in the lever ratio and must be corrected again.
  • test stand must be opened for calibration and the power lever must be mounted.
  • test roller It is known to set up a test axis on the test roller.
  • the wheels of the test axle are braked and the counter-support torque is measured at the test axle in the form of a torque measurement.
  • the introduced force is then compared with the force displayed on the chassis dynamometer.
  • test bench does not have to be opened. However, this test method is also torque-based and therefore subject to the same errors.
  • a change in the wheel diameter of the test axis also leads here to a change in the leverage ratios.
  • a test bench In accordance with legal requirements, a test bench must be regularly calibrated with high accuracy. However, this high accuracy is not achieved, for example due to the wear of the test roller, which is not included in the measurement, with previous testers.
  • DE 20 2017 101 176 discloses a device for testing and / or calibrating a test stand with a measuring device, which is designed to measure a force acting on the outer circumference of a test roller of the test bench tangential force. The tangential force is measured on the outer circumference of the test roller. Since the tangential force is measured directly, there is no need for indirect force measurement via inaccurate torque sensors or the like. Also wear of the test roller have no negative influence on the test or calibration due to the direct measurement.
  • a band and a fastening device can be provided.
  • the fastening device can be fastened or fastened to the test roller of the test stand.
  • the test roller must have a mounting option for the band, which does not exist in conventional test stands. Previously used test rollers must therefore be modified or replaced to retrofit the test benches accordingly. For new test rollers, however, a test roller can be provided with a corresponding mounting option equal.
  • One end of the tape is thus passed through the fastening device, e.g. a screw, attached to the test roller.
  • the other end of the band is connected or connectable to the measuring unit of the measuring device.
  • the tape preferably wraps around the test roll by at least 180 °, 200 °, 220 °, 250 °, 270 °, 300 °, 330 °, 350 ° or 360 °.
  • the test roller rotates if the drive is not blocked. A measurement is then not possible because the drive no counterforce arises because the rotor of the drive rotates freely.
  • the blocking device is designed to block a drive, in particular a motor, of a test roller of a test stand.
  • the test bench may be, for example, a test stand for motor vehicles, in particular cars and / or trucks. In principle, however, any test stands are conceivable, in particular for rolling bearings, for example in the paper and / or textile industry.
  • the blocking device is designed to prevent a relative movement between a stator and a rotor of the drive, at least temporarily. The testing and / or calibration of the test bench can thus be carried out in particular when the test roller is blocked. In particular, the blockage acts only between the rotor and the stator. in the
  • a force can be coupled in at the circumference of the test roller.
  • the test roll is thereby e.g. by means of a clamping device, in particular a hydraulic, a linear drive or a spindle drive, acted upon with force.
  • the tangential force on the roller surface then corresponds exactly to the force that is to be detected with the test stand.
  • the force introduced corresponds to the force to be displayed.
  • a sensor of a test bench based in particular on a torque measurement can then be tested and / or calibrated on the basis of the tangential force measured by a measuring unit.
  • a measuring aid e.g. a band, can be pulled around the test roll and wrap around it, in particular by at least 180 °. While one end is attached to the test roller, the other end may be connected to the measuring unit and this in turn connected to a force generator.
  • the drive for the test roller is blocked internally, so that the test roller can not rotate when force is applied to the measuring aid.
  • a tangential force is introduced at the roller surface at the effective circumference of the roller. Since the drive for the test roller is blocked, this force is transmitted directly to the measuring unit.
  • test bench If it is attached to the measuring aid, e.g. With 500 N pulled, the test bench must also display this value regardless of the ratio of the first lever to the second lever. During calibration, therefore, a changing roll diameter is also taken into account.
  • Such a test device is very inexpensive.
  • the testing device may comprise an evaluation unit, in particular with a display and / or an input device.
  • the input device may be e.g. to trade a keyboard or a touch pad.
  • Target values can be stored in the evaluation unit.
  • the evaluation unit can access setpoint values that are stored externally.
  • the setpoint values may in particular be a setpoint force which is determined by a reference sensor.
  • the actual force of the object to be calibrated can be compared with the desired value.
  • the evaluation unit can have a transmitting and / or receiving device in order to transmit the measured data by wire or wireless or to receive actual and / or desired values.
  • the evaluated data can be transmitted.
  • the raw data can also be transmitted and evaluated externally and / or displayed.
  • the evaluation unit can be connected, for example via the Internet to a data center.
  • the calibration data in particular automatically, are stored.
  • a calibration certificate can be created.
  • the test device can have a preferably exchangeable energy store, for example an accumulator or a battery.
  • the calibration process can preferably be completely automated.
  • the test device is mounted and switched on. After the start of the calibration process, the force generation generates a force that can be regulated.
  • the actual force determined on the test object is transmitted, recorded and / or a deviation is calculated. Then the next calibration point can be approached.
  • the end result is a calibration result in which the actual force, the desired force and / or a deviation thereof are locally stored, for example, or, e.g. over the internet.
  • the data may include the date, time, sequence number, data of the tester, a serial number of a reference force sensor and / or a serial number of the test apparatus.
  • the test apparatus can also have a meteorological sensor, in particular for measuring the temperature, the air humidity and / or the wind speed. These meteorological data can also be stored, evaluated and / or transmitted.
  • the angle at which the measuring aid is connected to the measuring unit is basically arbitrary.
  • the alignment device may comprise a movable holding device for holding the measuring aid and a bearing, which is adapted to guide the holding device in a test position.
  • the measuring aid In the test position, the measuring aid can be aligned at a predetermined angle, in particular 90 °.
  • the blocking device connects the stator and the rotor at least temporarily non-positively. During the testing and / or calibration of the test stand thus no relative movement between the stator and the rotor takes place. The rotor thus does not rotate and a measurement can be performed.
  • the stator comprises a housing of the drive.
  • a shaft can be fixed against the housing of the drive.
  • the rotor comprises a shaft, a sprocket and / or the test roller.
  • the shaft may be a stub shaft, which may be e.g. protrudes beyond an engine. This stub shaft can be fixed in particular against a transmission housing.
  • the shaft may be connected downstream of a transmission, for example, and in particular fixed against the motor housing.
  • the shaft can also be the shaft of the test roller. Furthermore, there is the possibility to fix the gear housing against a sprocket.
  • the blocking device is designed as a mechanical locking device.
  • the stator and the rotor are thus connected to one another in a mechanical manner, in particular in a form-locking and / or force-locking manner. This is easy to implement and requires, for example, in contrast to a magnetic brake or engine brake no additional energy.
  • the blocking device comprises a wrench, a bore, a splint, a screwing device and / or a clamping device.
  • a wave e.g. Stub shaft or a shaft downstream of the transmission or a shaft of the test roller to be fixed to the housing through a hole with split pin, a milled spanner size and / or by a clamping device.
  • a fixation of this sprocket or a shaft of the test roller on the transmission housing can be done for example via a screw.
  • the components can in particular be non-positively screwed against each other. The traction is thus possible via a bypass.
  • the blocking device is designed as an electrical, magnetic and / or electromagnetic blocking device.
  • a current flow in particular by means of a frequency, take place, so that rotation of the rotor is prevented.
  • a Krafft can also be set.
  • the drive can thus be electrically blocked or adjusted.
  • the drive can be blocked by means of a magnetic brake or motor brake.
  • the rotor may be blocked when no current is flowing.
  • a control device may be provided with which the blocking device is blocked for testing and / or calibrating the test stand.
  • the magnetic or motor brake can be activated or deactivated for checking and / or calibrating the test bench via the control device.
  • the invention also relates to a use of a blocking device according to the invention for testing and / or calibrating a test stand. It was surprising that, for example, an engine brake, which can be activated when a motor vehicle enters and exits, can also be used to test and / or calibrate the test stand. The drive can thus be blocked to test and / or calibrate a test bench. Furthermore, the invention relates to a drive for driving a test roller of a test stand.
  • the drive comprises a stator and a rotor.
  • the drive comprises a, in particular according to the invention, blocking device, which is designed to prevent a relative movement between the stator and the rotor of the drive, at least temporarily.
  • a drive can thus already be equipped with a blocking device.
  • existing drives can be retrofitted with a locking device.
  • the invention also relates to a use of the drive for testing and / or calibrating a test stand.
  • the drive can be prevented by the blocking device, at least temporarily.
  • the invention relates to a test stand, in particular for motor vehicles, which comprises at least one test roller and a drive for the test roller, which has a stator and a rotor.
  • test stand comprises a, in particular inventive, blocking device, which is designed to prevent a relative movement between the stator and the rotor of the drive, at least temporarily.
  • the invention also relates to a method for testing and / or calibrating a test stand in which a drive of a test roller of a test stand is at least temporarily blocked by means of a blocking device, in particular according to the invention.
  • a measuring device acting on the outer circumference of the test roller of the test bench tangential force is measured.
  • Fig. 2 is a schematic representation of a test apparatus
  • Fig. 3 is a perspective view of a first embodiment
  • FIG. 4 shows a side view of the drive according to FIG. 3
  • FIG. 5 shows a side view of a second embodiment
  • test rollers can always be provided.
  • the features of one embodiment may also be arbitrarily combined with features of another embodiment.
  • FIG. 1 shows a test bed 10 with a test roller 12 which is rotatably mounted on a shaft 14 formed as an arm about a rotation axis D.
  • a shaft 14 formed as an arm about a rotation axis D.
  • Stock 16 provided for the shaft 14 .
  • the shaft 14 forms a rotor of a drive 18, which can be driven.
  • the drive 18 comprises a housing 19, which is designed as a stator.
  • a wheel 20 of a motor vehicle is shown, which transmits force to the test roller at a power transmission area 22.
  • the drive 18 together with shaft 14 is mounted oscillating.
  • a sensor 24 serves as a counterstay.
  • the force is determined at the sensor 24 via a torque measurement. If the wheel 20 is accelerated or braked, the resulting force is transmitted via the power transmission area 22 to the test roller 12. This force is measured via the sensor 24.
  • the sensor 24 is connected to a measuring amplifier 26, which in turn is connected to a measuring data processing device 28.
  • the measurement data processing device 28 has an interface 30, e.g. an ASA interface, and a meter 32 on.
  • the measuring amplifier 26 and the measuring data processing device 28 are part of an electrical measuring chain 34.
  • the torque-based measurement requires the ratio of a first lever L1 to a second lever L2.
  • the first lever L1 extends from the axis of rotation D of the test roller 12 to the power transmission area 22 on the roller surface.
  • the second lever L2 extends from the axis of rotation D of the test roller 12 to the counter-support 24. The force on the counter-support 24 results in the ratio of L1 to L2.
  • a measuring aid designed as a band 36 is connected at one end via a fastening device 38 to the test roller 12 and at least partially wrapped around the test roller 12.
  • the band 36 is connected to a measuring unit 40 of a measuring device 42 designed as a tensile force meter.
  • the measuring device 42 also includes a force generator 44.
  • the force generator 44 may include a controller.
  • a force is coupled to the circumference of the test roller 12.
  • a test roller 12 is generated by means of force generation 44, e.g. a tensioning device, in particular a hydraulic, an electric drive, a linear motor or a spindle drive, acted upon with force.
  • force generation 44 e.g. a tensioning device, in particular a hydraulic, an electric drive, a linear motor or a spindle drive.
  • the tangential force F on the roller surface then corresponds exactly to the force that is to be detected by the test stand 10.
  • the force introduced corresponds to the force to be displayed.
  • the drive 18 for the test roller 12 is blocked in the interior by means of a blocking device, which is explained in more detail in connection with FIGS. 3 to 5, so that the test roller 12 can not rotate upon application of force to the belt 36.
  • a tangential force is introduced at the effective circumference of the test roller 12 on the roller surface. Since the drive 18 is blocked for the test roller 12, this tangential force F is transmitted directly to the measuring unit 40.
  • the sensor 24 of the test bench 10 must also display this value, regardless of the ratio of the first lever L1 to the second lever L2. During calibration, therefore, a changing roll diameter is also taken into account.
  • 3 and 4 show a drive 18 for driving the test roller 12.
  • a wheel 20 can stand up on the test roller 12.
  • the tangential force F on the roller surface can be measured.
  • the drive 18 comprises a motor 46 and a gear 48 arranged in the housing 19.
  • the sensor 24 with the drive 18 fixed power and counter-support which may be designed as a fixed bearing, determined in a normal test process, the force acting thereon.
  • test roller 12 The drive 18 together with test roller 12 is supported by three bearings 16. Alternatively, more or fewer bearings 16 may be provided. Via a sprocket 50, which forms a rotor, a second, not shown test roller can be connected.
  • connection between the shaft 14 of the drive 18 and the shaft of the test roller 12 can be realized as a shaft-hub connection with a feather key.
  • the shafts 14 can thereby be positively and positively connected.
  • four possible blocking devices 52 are shown, which ensure that the rotor 14, 50 does not rotate relative to the stator 19 during the testing and / or calibration of the test stand 10.
  • test roller 12 would spin and on the motor 46 no counterforce would arise because the shaft 14 would rotate freely.
  • Housing 19 are fixed non-positively. Thus, a force acting on the shaft 14 via the housing 19 is transmitted to the sensor 24.
  • the blocking device 52 may be provided on a stub shaft 14 between the motor 46 and bearing 16.
  • the stub shaft 14 can be fixed against the housing (not shown) of the motor 46.
  • a hole can be provided with a split pin.
  • a milled key width and / or a clamping device can be used for blocking.
  • the blocking device 52 may be arranged on the shaft 14 connected downstream of the transmission 48.
  • the shaft 14 can be fixed against the housing 19 of the transmission 48.
  • a hole can be provided with a split pin.
  • a milled key width and / or a clamping device can be used for blocking.
  • the blocking device 52 can also fix the sprocket 50 or the test roller 12 to the housing 19 of the transmission 48.
  • the blocking device 52 is in particular torsionally rigid.
  • a cuff can be clamped around the test roller 12, to which a displaceable rod is attached. After assembly of the collar to the test roller 12, the rod can be pushed to a predefined point on the drive 18.
  • the components can be screwed against each other, for example non-positively.
  • the adhesion is thus not directly on the shaft 14 but via a bypass.
  • the blocking device 52 comprises a motor brake designed as a magnetic brake 54.
  • the drive 18 can be blocked in an electromagnetic manner to test the test bench 10 and / or to calibrate.
  • the storage of the magnetic brake 54 and the drive 18 is not shown. This can be provided, for example, at a position as stiff as possible of the motor housing. LIST OF REFERENCE NUMBERS

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Body Structure For Vehicles (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Abstract

L'invention concerne un dispositif de blocage permettant de bloquer un entraînement d'un rouleau d'essai d'un banc d'essai. L'invention concerne en outre un mécanisme d'entraînement, un banc d'essai ainsi qu'un procédé pour contrôler et/ou étalonner un banc d'essai.
PCT/EP2018/054841 2017-03-02 2018-02-27 Dispositif de blocage Ceased WO2018158268A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202017101176.3 2017-03-02
DE202017101176.3U DE202017101176U1 (de) 2017-03-02 2017-03-02 Vorrichtung zum Prüfen und/oder Kalibrieren eines Prüfstands
DE102017117773.6A DE102017117773B3 (de) 2017-03-02 2017-08-04 Blockiervorrichtung
DE102017117773.6 2017-08-04

Publications (1)

Publication Number Publication Date
WO2018158268A1 true WO2018158268A1 (fr) 2018-09-07

Family

ID=58490115

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/EP2018/054841 Ceased WO2018158268A1 (fr) 2017-03-02 2018-02-27 Dispositif de blocage
PCT/EP2018/054845 Ceased WO2018158271A2 (fr) 2017-03-02 2018-02-27 Dispositif d'orientation destiné à orienter un élément d'aide à la mesure d'un dispositif de contrôle
PCT/EP2018/054837 Ceased WO2018158266A1 (fr) 2017-03-02 2018-02-27 Dispositif et procédé de contrôle et/ou d'étalonnage d'un banc d'essai

Family Applications After (2)

Application Number Title Priority Date Filing Date
PCT/EP2018/054845 Ceased WO2018158271A2 (fr) 2017-03-02 2018-02-27 Dispositif d'orientation destiné à orienter un élément d'aide à la mesure d'un dispositif de contrôle
PCT/EP2018/054837 Ceased WO2018158266A1 (fr) 2017-03-02 2018-02-27 Dispositif et procédé de contrôle et/ou d'étalonnage d'un banc d'essai

Country Status (4)

Country Link
EP (1) EP3574298A1 (fr)
CN (1) CN110446913A (fr)
DE (5) DE202017101176U1 (fr)
WO (3) WO2018158268A1 (fr)

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CN110307933B (zh) * 2019-07-16 2024-03-29 西南交通大学 一种铁路车辆车钩力静态标定试验台
CN110749444A (zh) * 2019-09-27 2020-02-04 西安航天计量测试研究所 航天液体发动机地面试验测试系统的校准系统及方法
CN113074864B (zh) * 2021-02-18 2022-08-09 河南省计量科学研究院 一种底盘测功机的扭力校准方法
BE1029761B1 (nl) * 2021-09-17 2023-04-17 Bep Europe Nv Inrichting voor het testen van een remsysteem
CN114705344B (zh) * 2022-03-29 2023-12-26 东风汽车集团股份有限公司 一种乘用车驻车系统操作力测量试验装置及方法
CN119064019B (zh) * 2024-11-04 2025-03-14 中国航发四川燃气涡轮研究院 一种航空发动机多分力台架的空间力加载装置

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WO2018158271A2 (fr) 2018-09-07
WO2018158271A3 (fr) 2018-11-22
WO2018158266A1 (fr) 2018-09-07
EP3574298A1 (fr) 2019-12-04
DE102017117773B3 (de) 2018-01-11
CN110446913A (zh) 2019-11-12
DE202017104688U1 (de) 2017-08-25
DE202017101176U1 (de) 2017-03-20

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