EP0360197B1 - Porte-balais - Google Patents

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Publication number
EP0360197B1
EP0360197B1 EP89117238A EP89117238A EP0360197B1 EP 0360197 B1 EP0360197 B1 EP 0360197B1 EP 89117238 A EP89117238 A EP 89117238A EP 89117238 A EP89117238 A EP 89117238A EP 0360197 B1 EP0360197 B1 EP 0360197B1
Authority
EP
European Patent Office
Prior art keywords
brush
transducer
brush holder
pressure
carbon brush
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.)
Expired - Lifetime
Application number
EP89117238A
Other languages
German (de)
English (en)
Other versions
EP0360197A3 (en
EP0360197A2 (fr
Inventor
W. Stefan Rogoz
Rolf Tempel
Ulrich Schmidt
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.)
Schunk Bahn und Industrietechnik GmbH Germany
Original Assignee
Schunk Bahn und Industrietechnik GmbH Germany
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=6363422&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0360197(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schunk Bahn und Industrietechnik GmbH Germany filed Critical Schunk Bahn und Industrietechnik GmbH Germany
Publication of EP0360197A2 publication Critical patent/EP0360197A2/fr
Publication of EP0360197A3 publication Critical patent/EP0360197A3/de
Application granted granted Critical
Publication of EP0360197B1 publication Critical patent/EP0360197B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/58—Means structurally associated with the current collector for indicating condition thereof, e.g. for indicating brush wear

Definitions

  • the invention relates to a brush holder according to the preambles of claims 1 and 3.
  • Brush holders are intended for electrical machines, with a pressure lever, a roller belt, spiral, screw tension or helical compression spring ensures that the carbon brushes are constantly in contact with a commutator or a slip ring.
  • the wear of the carbon brushes must be monitored.
  • signal generators on the brush holders in the form of switching elements which emit a signal when there is a certain amount of wear (DE-A-30 13 758, DE-U -87 14 263). So there is a punctual monitoring of the time when the carbon brushes are so worn that a change is necessary.
  • measures cannot be ascertained whether the machine itself is working properly, since, as mentioned, only a very specific point in time of carbon brush wear is recorded.
  • the object of the present invention is to develop brush holders according to the preambles of claims 1 and 3 so that permanent monitoring of carbon brush wear can be carried out without requiring additional space.
  • the pressure element such as the pressure lever or the roller conveyor spring, acts essentially continuously on the signal transmitter, so that signals are dependent on the position of the pressure element, which is a measure of the wear of the carbon brush to obtain, which not only allow statements about the wear, but also about the function of the machine itself.
  • Remote monitoring can be carried out using the signals obtained inductively, capacitively or via a resistor, the current signals possibly being compared with stored signals in order to be able to recognize errors occurring in good time.
  • wear and therefore machine monitoring does not need to be carried out over the entire travel of the pressure element. Rather, it is possible to carry out monitoring in areas, but then continuously.
  • translation elements such as intermeshing toothed rings can be present between the shaft having the tension element or the bracket and the signal transmitter. This results in an increased signal resolution.
  • a brush holder 1 which has a brush guide 7, in which a carbon brush 13 is slidably arranged.
  • a pressure lever 2 which can be rotated or pivoted about an axis 14, acts with its front end 12 on the carbon brush 13, so that its opposite end 8 continuously abuts the collectors or slip rings of an electrical machine.
  • a tension spring 9 acts on the pressure lever 2, which is fastened on the one hand to the housing 6 of the brush holder 1 and on the other hand to the pressure lever 2, for example on pins not specified in any more detail.
  • the pressure lever 2 is preferably connected to the housing 6 of the brush holder 1 via journal 16.
  • a bracket 3 also extends from the bearing pin 16 and is subjected to a force by means of a spring element, which counteracts the rotary or pivoting movement of the pressure lever 2 in the direction of the carbon brush 13.
  • the bracket 3 preferably has a driver such as a toothed ring 4 in the region of the pin 16, which cooperates directly or indirectly with a signal transmitter 11 in the form of, for example, a rotary potentiometer, so as to deliver a signal depending on the position of the bracket 3
  • a driver such as a toothed ring 4 in the region of the pin 16
  • a signal transmitter 11 in the form of, for example, a rotary potentiometer
  • the bracket 3 is preferably U-shaped, with side legs extending from the bearing journal and the web interacting with the pressure lever 2, as is particularly illustrated in FIG. 2.
  • FIG. 3 shows a further embodiment of a brush holder 20 which has a carbon brush 22 which is displaceably arranged in a brush guide 21 and on which acts a pressure lever 23 which can be rotated or pivoted about an axis 24.
  • a spring element extends from the housing 25 of the brush holder 20, which in e.g. is set in a not shown recess on the pressure lever 23. The direction of pull of the spring element is indicated by the dashed line 26.
  • the pressure lever 23 has a section 27 from which a tension element 28 extends, which is connected to a shaft 29 extending from the housing 25, via which a signal transmitter, not shown, such as e.g. Rotary potentiometer can be actuated.
  • the shaft 29 can be spring-biased.
  • the tension element 28 is designed as a roller band spring. If the pressure lever 23 is now rotated or pivoted in the direction of the brush guide, the pulling element 28 appears to be lengthened, which is noticeable by rotating the shaft 29.
  • the teaching according to the invention can also be used to monitor a plurality of brush holders arranged next to one another and to wear the carbon brushes which are displaceably arranged in them, as will be illustrated purely schematically with reference to FIG. 4.
  • four brush holders 30, 31, 32 and 33 are arranged side by side.
  • the carbon brushes shown act in each case separate pressure elements such as pressure levers, spring elements such as a roller-type spring of a known type.
  • the wear of the carbon brushes can now be monitored via tension elements 34, 35, 36 and 37 starting from these pressure elements.
  • the tension elements 34, 35, 36, 37 are connected to a shaft 38, which in the exemplary embodiment interacts with a rotary potentiometer 39 in such a way that different signals are obtained depending on the position of the shaft 38.
  • the shaft 38 can be spring-biased.
  • the tension elements 34, 35, 36, 37 can be designed as band springs.
  • FIG. 5 shows a brush holder 40 with a brush guide 42 running in a housing 41, in which a carbon brush 43 is slidably arranged.
  • the pressure element acting on the carbon brush 43 is a roller band spring 44, which starts from a U-shaped or V-shaped bracket 46 which is latched into a pocket 45 of the housing 41.
  • a traction element 47 extends from the roller band spring 44 and acts on a signal transmitter such as a rotary potentiometer 48 so as to obtain different signals from the signal transmitter 48 depending on the position of the roller belt spring, which is a measure of the wear of the carbon brush 43 which enables monitoring of the wear of the carbon brush 43.
  • a leg 49 of the holder 46 from which the roller band spring 44 extends, which acts on the carbon brush 43, not shown.
  • the traction element starting from the roll band spring 44 such as, for example, rope, cord, roll band or the like, is in the form of the signal generator 48 Rotary potentiometer connected.
  • this takes place in that a spring-biased disc-shaped element 51 is arranged on a shaft 50 of the rotary potentiometer 48 and is connected to the roller band spring 44 via the tension element 47.
  • the disc element 51 with the tension element 47 can of course also be replaced by a roller band spring that starts directly from the shaft 50 or the roller band spring 44.

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Claims (7)

  1. Un porte-balais (1, 20) avec au moins une glissière (7, 21) logeant un balai de charbon (13, 22), un élément de pression (2, 23) sollicitant en pression le balai de charbon (13, 22) ainsi qu'un transmetteur de signaux (11, 39) détectant de manière essentiellement continue l'usure du balai de charbon (13, 23), pouvant être commandé par le déplacement de l'élément de pression (2, 23) et engendrant des signaux électriques, caractérisé en ce que l'élément de pression est réalisé en levier de pression (2, 23), qui agit sur un archet (3) ou un élément de traction (28) mis en précontrainte contre le mouvement de pivotement du levier de pression, qui coopère de son côté avec le transmetteur de signaux (11) opérant par induction, par capacité ou en fonction de la résistance ou bien comme séquenceur, encodeur, potentiomètre ou transmetteur de déplacement.
  2. Porte-balais selon la revendication 1, caractérisé en ce que le porte-balais (1, 20) comporte plusieurs glissières de balais (7, 21) disposées les unes à côté des autres avec des leviers de pression (2, 23) associés à celles-ci et en ce qu'à tous les leviers de pression (2, 23) est associé un archet s'étendant sur tout le parcours de rotation ou de pivotement des leviers de pression (2, 23) et agissant sur le transmetteur de signaux (11).
  3. Porte-balais (40) avec au moins une glissière (42) recevant un balai de charbon (43), un élément de pression (44) chargeant le balai de charbon (43) ainsi qu'un transmetteur de signaux (48) détectant de manière essentiellement continue l'usure du balai de charbon (43) et produisant des signaux électriques, caractérisé en ce que l'élément de pression est un ressort à ruban enroulé (44) d'où part un élément de traction (47), et en ce que l'élément de traction (47) est relié à un arbre (50) pouvant tourner sur paliers, sur lequel le transmetteur de signaux (39, 48)peut agir par induction, capacité ou en fonction de la résistance ou bien réalisé comme séquenceur, encodeur, potentiomètre ou transmetteur de déplacement.
  4. Porte-balais selon la revendication 3, caractérisé en ce que l'arbre (50) est précontraint par ressort.
  5. Porte-balais selon au moins l'une des revendications précédentes, caractérisé en ce que le parcours de réglage de l'élément de pression (2, 23) peut être transféré par des éléments de transmission (4, 11) comme des couronnes dentées ou des roues dentées plates au transmetteur de signaux.
  6. Porte-balais selon au moins l'une des revendications 3 à 5, caractérisé en ce que le porte-balais (40) comporte plusieurs glissières (42) pour balais disposées les unes à côté des autres avec des ressorts à ruban enroulé (44) associés aux glissières, et en ce qu'un arbre (38) se développe perpendiculairement au parcours de déplacement des balais de charbon, d'où partent des éléments de traction (34, 35, 36, 37) reliés aux ressorts à ruban enroulé (44), par l'intermédiaire desquels l'arbre (38) coopérant avec un transmetteur de signaux (39) peut tourner en fonction du trajet de réglage des ressorts à ruban enroulé (44).
  7. Porte-balais selon au moins l'une des revendications précédentes, caractérisé en ce qu'un contrôle à distance est prévu pour les signaux produits par le transmetteur de signaux (11, 39, 48).
EP89117238A 1988-09-21 1989-09-18 Porte-balais Expired - Lifetime EP0360197B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3832079 1988-09-21
DE3832079A DE3832079A1 (de) 1988-09-21 1988-09-21 Buerstenhalter

Publications (3)

Publication Number Publication Date
EP0360197A2 EP0360197A2 (fr) 1990-03-28
EP0360197A3 EP0360197A3 (en) 1990-10-03
EP0360197B1 true EP0360197B1 (fr) 1994-08-17

Family

ID=6363422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117238A Expired - Lifetime EP0360197B1 (fr) 1988-09-21 1989-09-18 Porte-balais

Country Status (3)

Country Link
EP (1) EP0360197B1 (fr)
DE (2) DE3832079A1 (fr)
ES (1) ES2057040T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003669A1 (de) * 1989-02-20 1990-08-23 Siemens Ag Vorrichtung zum erfassen der laenge der buersten einer elektrischen maschine
US5870026A (en) * 1997-07-15 1999-02-09 The Morgan Crucible Company Plc Brush wear indicator
DE19832617B4 (de) * 1998-07-21 2004-05-06 Schunk Metall Und Kunststoff Gmbh Anordnung zum Überwachen des Verschleisses von zumindest einer Kohlebürste sowie Nachrüsteinrichtung zur Überwachung
EP2112518A1 (fr) * 2008-04-25 2009-10-28 ALSTOM Technology Ltd Moniteur d'usure de brosse
DE102018110098A1 (de) 2018-04-26 2019-10-31 Schunk Bahn- Und Industrietechnik Gmbh Verschleißmesssystem und Verfahren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE662780C (de) * 1935-07-19 1938-07-21 Siemens Schuckertwerke Akt Ges Vorrichtung zum Anzeigen der Abnutzung von Kohlebuersten fuer Elektromotoren
DE1903582U (de) * 1962-06-14 1964-11-05 Kaltenbach & Voigt Buerstenhalter fuer technikmotoren, insbesondere fuer zahnaerztliche zwecke.
DE2538922A1 (de) * 1975-09-02 1977-03-03 Metabowerke Kg Elektromotor mit einer optischen buerstenverschleissanzeige
DE3013758A1 (de) * 1980-04-10 1981-10-15 Kollektra Metall- und Kunststoff-Werk GmbH, 6301 Wettenberg Buersten-stromzufuehrung fuer elektrische maschinen und geraete
US4329683A (en) * 1980-09-04 1982-05-11 General Electric Co. Brush wear indicator for a dynamoelectric machine
JPS60249848A (ja) * 1984-05-24 1985-12-10 Fuji Electric Co Ltd 誘導機のブラシの摩粍限界検出装置
JPS6181153A (ja) * 1984-09-28 1986-04-24 Toshiba Corp 回転電機のブラシ摩耗監視装置
DE3701643A1 (de) * 1987-01-21 1988-08-04 Still Gmbh Meldeeinrichtung fuer das melden des verschleisszustandes von buersten einer elektrischen maschine
FR2613546B1 (fr) * 1987-04-03 1992-12-04 Ferraz Porte-balais pour machines electriques
DE8811808U1 (de) * 1988-09-17 1988-12-08 G. Dietrich GmbH Spezialfabrik für Bürstenhalter und Kunststoffteile, 7893 Jestetten Bürstenhalter mit Bürstenmeldevorrichtung

Also Published As

Publication number Publication date
DE58908209D1 (de) 1994-09-22
ES2057040T3 (es) 1994-10-16
DE3832079A1 (de) 1990-03-22
EP0360197A3 (en) 1990-10-03
EP0360197A2 (fr) 1990-03-28

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