EP1080355A1 - Dispositif d'essai de suspension de roue - Google Patents

Dispositif d'essai de suspension de roue

Info

Publication number
EP1080355A1
EP1080355A1 EP99934468A EP99934468A EP1080355A1 EP 1080355 A1 EP1080355 A1 EP 1080355A1 EP 99934468 A EP99934468 A EP 99934468A EP 99934468 A EP99934468 A EP 99934468A EP 1080355 A1 EP1080355 A1 EP 1080355A1
Authority
EP
European Patent Office
Prior art keywords
wheel
eccentric
shaft
eccentric shaft
suspension tester
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Withdrawn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
EP99934468A
Other languages
German (de)
English (en)
Inventor
Juergen Anlauf
Christian Gern
Uwe Fischer
Reinhard Hoss
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1080355A1 publication Critical patent/EP1080355A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/04—Monodirectional test stands

Definitions

  • the invention relates to a wheel suspension tester with a motor that drives one or two shaft trains, each consisting of at least one drive shaft and one eccentric shaft, the drive shaft assigned to the motor being connected to the eccentric shaft via a freewheel, the eccentric shaft carrying an eccentric, which sets a wheel holder in oscillating movements, and wherein the shaft train is assigned at least one flywheel.
  • an eccentric shaft is connected to two drive shafts of the motor via a freewheel.
  • One of the drive shafts is equipped with the flywheel.
  • the motor is first rotated in one direction of rotation.
  • One of the freewheels locks, the other idles, so that the wheel on one side of the axle can be tested. After the test is completed, the direction of rotation of the motor is reversed. To test the other side of the axle, the first freewheel is now idling, while the second locks.
  • the motor is adjusted so that the wheel mount vibrates at an amplitude of 3 mm at 24 Hz. After this frequency has been reached, the motor is switched off and the shaft train runs continuously, supported by the flywheel. It has been shown that the weight of the vehicle that is loaded on the wheel to be tested, the Wheel pickup accelerated when moving in the direction of gravity. This also accelerates the eccentric shaft. In this state, the flywheel stabilizes, but not the reaction energy. As a result, an oscillation arises whose downward movement has a different frequency than the upward movement. However, uniform vibration profiles are required for a clear evaluation of the measured values.
  • flywheel mass Since the flywheel mass is directly coupled to the eccentric shaft, it can be used to stabilize the vibration. It is thus possible to set the wheel receptacle in sinsus-shaped vibrations, which allow an accurate evaluation of the measurement results.
  • the drive shafts are connected to the eccentric shafts via a gear and that the gear translates the speed of the drive shaft in the direction of higher speeds onto the eccentric shaft. It is therefore possible to build up high rotational energy via small flywheels. A smaller dimensioning of the suspension tester can thus be achieved. Due to the high rotational energy, it can also be achieved that the wheel receptacles also swing through to very low frequencies can. For example, vibration frequencies of 0.5 Hz that can still be evaluated can then be implemented.
  • a simple construction is given for the wheel suspension tester, for example, if it is provided that the eccentric shaft is rotatably mounted in two bearing blocks, which is accommodated on a holder in a stationary manner in a receptacle housing, that the holder has guides for a frame that the Frame carries the wheel receptacles, and that the frame is adjustable relative to the bracket by means of the guides.
  • the wheel receptacle is secured via a retaining device designed as a housing, and that the eccentric in a receptacle bore of the housing with little vertical game.
  • a cost-effective construction can be realized if it is provided that the wheel holder is plate-shaped and is underpinned centrally by a single force sensor. A direct coupling to the force absorption sensor is ensured by the eccentric running directly on the sensor.
  • the wheel suspension tester has a receptacle housing 10 in which a motor 20 is fixed.
  • the motor 20 has two output shafts 21 which are coupled to eccentric shafts or output shafts 25 via freewheels 22.
  • the abrasion shafts 25 each carry a flywheel 23.
  • the flywheel 23 is pushed onto the driven shaft 25 and locked in rotation therewith by means of a clutch 24.
  • the output shaft 25 is rotatably supported in two bearing blocks 12.
  • the bearing blocks 12 are fixed on a bracket 11, which is accommodated in a stationary manner in the receiving housing 10.
  • the bracket 11 carries a frame 15 on guides.
  • a wheel receptacle 13 is attached to the frame 15 and is essentially designed as a plate.
  • a force absorption sensor 14 is arranged and fastened centrally on the underside of this plate. The force absorption sensor 14 is also coupled to the holder 11.
  • the wheels of the wheel axle are placed on the wheel receptacle 13.
  • the drive shafts 21 of the motor 20 are then set in rotation.
  • one of the two freewheels 22 locks, while the other freewheel 22 runs idle.
  • the associated output shaft 25 is rotated.
  • the speed is set so that an eccentric 26 attached to the output shaft 25 excites the wheel holder 13 to oscillate.
  • the oscillation frequency is 24 Hz.
  • the motor becomes 20 switched off and the wheel holder 13 swings out, supported by the flywheel 23, continuously. Since the flywheel 23 is firmly coupled to the output shaft 25, its rotational energy stabilizes the rotary movement and thus the vibration of the wheel holder 13.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Testing Of Balance (AREA)

Abstract

L'invention concerne un dispositif d'essai de suspension de roue comportant un moteur, entraînant une ou deux lignes d'arbres constituées respectivement d'au moins un arbre de commande et un arbre d'excentrique. L'arbre de commande associé au moteur est raccordé à l'arbre d'excentrique par l'intermédiaire d'une roue libre, et l'arbre d'excentrique porte un excentrique qui fait osciller un support de roue, au moins une masse d'inertie étant associée à la ligne d'arbres. Dans le but de pouvoir produire une oscillation régulière du support de roue en vue de permettre une meilleure évaluation des résultats de mesure, la masse d'inertie est accouplée rigidement avec l'arbre d'excentrique.
EP99934468A 1998-05-18 1999-05-11 Dispositif d'essai de suspension de roue Withdrawn EP1080355A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19823374A DE19823374A1 (de) 1998-05-18 1998-05-18 Radaufhängungs-Tester
DE19823374 1998-05-18
PCT/DE1999/001415 WO1999060366A1 (fr) 1998-05-18 1999-05-11 Dispositif d'essai de suspension de roue

Publications (1)

Publication Number Publication Date
EP1080355A1 true EP1080355A1 (fr) 2001-03-07

Family

ID=7868895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99934468A Withdrawn EP1080355A1 (fr) 1998-05-18 1999-05-11 Dispositif d'essai de suspension de roue

Country Status (4)

Country Link
EP (1) EP1080355A1 (fr)
DE (1) DE19823374A1 (fr)
HU (1) HUP0101856A3 (fr)
WO (1) WO1999060366A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2445638C1 (ru) * 2010-08-16 2012-03-20 Федеральное государственное унитарное предприятие "Научно-производственное объединение автоматики имени академика Н.А. Семихатова" Датчик тока

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116439B (de) * 1957-08-26 1961-11-02 Ernst Essers Dr Ing Schwingungspruefstand, insbesondere fuer Kraftfahrzeuge
DE2130218A1 (de) * 1971-06-18 1972-12-21 Middeldorf Klaus Pruefeinrichtung,insbesondere fuer mit Stroemungsmitteln gefuellte Stossdaempfer od.dgl.
DE2337411A1 (de) * 1973-07-23 1975-02-06 Volkswagenwerk Ag Verfahren und vorrichtung zum pruefen von stossdaempfern
DE2556073A1 (de) * 1974-09-23 1977-06-16 Hofmann Maschf Geb Verfahren zum pruefen von schwingungsdaempfern eines fahrzeuges im eingebauten zustand und vorrichtung zur durchfuehrung dieses verfahrens
HU186814B (en) * 1983-11-14 1985-09-30 Transinnov Koezlekedesi Muesza Method and apparatus for qualifying the shock absorption of sprung running gear provided with felxible tyre particularly for road motor vehicle one
DE3942056A1 (de) * 1989-12-20 1991-06-27 Bosch Gmbh Robert Rollenpruefstand zur kombinierten leistungs- und bremsenpruefung an kraftfahrzeugen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9960366A1 *

Also Published As

Publication number Publication date
DE19823374A1 (de) 1999-12-09
HUP0101856A3 (en) 2002-02-28
HUP0101856A2 (hu) 2001-10-28
WO1999060366A1 (fr) 1999-11-25

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