EP0360197A2 - Porte-balais - Google Patents

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Publication number
EP0360197A2
EP0360197A2 EP89117238A EP89117238A EP0360197A2 EP 0360197 A2 EP0360197 A2 EP 0360197A2 EP 89117238 A EP89117238 A EP 89117238A EP 89117238 A EP89117238 A EP 89117238A EP 0360197 A2 EP0360197 A2 EP 0360197A2
Authority
EP
European Patent Office
Prior art keywords
brush holder
brush
pressure
signal transmitter
holder according
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.)
Granted
Application number
EP89117238A
Other languages
German (de)
English (en)
Other versions
EP0360197B1 (fr
EP0360197A3 (en
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=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0360197(A2) "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 with at least one brush guide receiving a carbon brush and a movable pressure element that can be pressed onto the carbon brush, such as a pressure lever or spring element, to which an element that continuously detects the wear of the carbon brush is assigned.
  • Brush holders are intended for electrical machines, whereby 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 transmitters in the form of switching elements on the brush holders which emit a signal in the event of certain wear (DE-U 19 03 587, DE-A 30 13 758). So there is a punctual monitoring of the time when the carbon brushes are so worn that a change is necessary. Appropriate measures cannot be used to determine whether the machine itself is working properly, since it is mentioned that only a very specific point in time of carbon brush wear is recorded.
  • the object of the present invention is to design a brush holder of the type mentioned at the outset in such a way that permanent monitoring of the carbon brush wear is carried out to the desired extent in order to be able to draw conclusions about the function of the machine itself, with a check not directly on the electrical machine must be done.
  • the element which is actuated directly or indirectly via the adjustment path of the pressure element is a signal generator which generates electrical signals.
  • the pressure element such as the pressure lever or roller belt, spiral, screw tension or helical compression spring, acts essentially continuously or directly on the signal transmitter, in order to receive signals as a function of the position of the pressure element, which is a measure of the wear of the carbon brush received, which allow statements not only about wear, but also about the function of the machine itself.
  • Remote monitoring can be carried out by means of the signals obtained, for example, 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 thus machine monitoring does not need to be carried out over the entire travel of the pressure element, such as the rotation or swivel travel of the pressure lever. Rather, area-by-area monitoring can be carried out.
  • the pressure lever acts on a bracket that is biased against its rotating or pivoting movement and that actuates the signal transmitter.
  • the adjustment path of the pressure element can also be detected via a tension element such as a rope or belt, which runs between the element and a shaft, which in turn acts directly or indirectly on the signal transmitter, such as a rotary potentiometer. If the pressure element moves or swivels, the apparent extension of the tension element causes the shaft to rotate, which is transmitted to the signal transmitter.
  • the shaft itself can be spring-biased or the tension element can be designed as a conveyor belt spring, which also causes the rotary movement of the shaft.
  • translation elements such as intermeshing toothed rings can be present between the shaft or the bracket having the tension element and the signal transmitter. This results in an increased signal resolution.
  • the signal transmitter itself can preferably be designed as a switching element, rotary encoder, rotary or slide potentiometer or displacement sensor. Other configurations are also possible. The only important thing is that the travel of the pressure element, such as the rotary or pivoting movement of the pressure lever, is recorded in order to obtain information about the wear of the carbon brush.
  • the brush holder has a plurality of brush holders arranged next to one another with pressure levers associated therewith which act together on a single bracket which actuates a signal transmitter, in a manner known per se.
  • each pressure lever can each have a tension element, with all tension elements starting from a common shaft, which in turn acts on the signal transmitter.
  • the pressure levers can of course also be replaced by other known pressure elements, such as roll-band springs, which have tension elements starting from a common shaft, so as a function of the adjustment of the pressure elements, which represents a measure of the wear of the carbon brush, the shaft and thus the signal transmitter actuate.
  • the rotation of the shaft is also determined by the tension element of the pressure element that is most widely adjusted, that is to say the one in which the carbon brush is most used up.
  • 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) is continuously on the collectors or slip rings of an electrical machine issue.
  • 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) by means of trunnions (16).
  • a bracket (3) extends from the bearing journal (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 ring gear (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 a function of the position of the Bracket (3) to provide a signal that provides information about the wear of the carbon brush (13); because the further the pressure lever (2) is rotated or pivoted, i.e. moves in the direction of the brush guide (7) or dips into it (FIG.
  • 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.
  • a further embodiment of a brush holder (20) which has a carbon brush (22) slidably arranged in a brush guide (21), on which acts a pressure lever (23) which rotates or rotates about an axis (24) is pivotable.
  • a spring element extends from the housing (25) of the brush holder (20) that in eg is set in a recess, not shown, on the pressure lever (23). The direction of pull of the spring element is indicated by the dashed line (26).
  • the pressure lever (23) In the area facing away from the carbon brush (22), 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 generator, not shown, such as 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 turned or pivoted in the direction of the brush guide, the pulling element (28) appears to be lengthened, which is noticeable by turning 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 is to 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 on separate pressure elements such as pressure levers, spring elements such as a roller-type spring of 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, depending on the position of the shaft (38) different signals are obtained.
  • 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 locked in a pocket (45) of the housing (41).
  • a tension element (47) emanates from the roll band spring (44) and acts on a signal transmitter such as a rotary potentiometer (48), so that different signals depending on the position of the roll band spring, which is a measure of the wear of the carbon brush (43) to be obtained from the signal generator (48), by means of which the wear of the carbon brush (43) can be monitored.
  • FIGS. 6 and 7. Detailed representations of a related construction can be seen in FIGS. 6 and 7.
  • the traction element starting from the roll band spring (44), such as rope, cord, roll band or the like, is connected to the signal transmitter (48) in the form of the Rotary potentiometer connected.
  • the disc element (51) with the tension element (47) can of course also be replaced by a roller band spring which starts directly from the shaft (50) or the roller band spring (44).

Landscapes

  • Motor Or Generator Current Collectors (AREA)
EP89117238A 1988-09-21 1989-09-18 Porte-balais Expired - Lifetime EP0360197B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999004460A1 (fr) * 1997-07-15 1999-01-28 The Morgan Crucible Company Plc Indicateur d'usure des balais
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
EP2112519A3 (fr) * 2008-04-25 2009-11-04 ALSTOM Technology Ltd Commutateur pour circuit d'enregistrement d'usure de brosse
EP3561969A1 (fr) * 2018-04-26 2019-10-30 Schunk Bahn- und Industrietechnik GmbH Système de mesure d'usure et procédé

Families Citing this family (1)

* 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

Family Cites Families (8)

* 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
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999004460A1 (fr) * 1997-07-15 1999-01-28 The Morgan Crucible Company Plc Indicateur d'usure des balais
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
EP2112519A3 (fr) * 2008-04-25 2009-11-04 ALSTOM Technology Ltd Commutateur pour circuit d'enregistrement d'usure de brosse
US8084704B2 (en) 2008-04-25 2011-12-27 Alstom Technology Ltd Switch for a brush wear recording circuit
US8120503B2 (en) 2008-04-25 2012-02-21 Alstom Technology Ltd Brush wear monitor having mounted flags interactable with an impedance dependent switch
EP3561969A1 (fr) * 2018-04-26 2019-10-30 Schunk Bahn- und Industrietechnik GmbH Système de mesure d'usure et procédé
US11088499B2 (en) 2018-04-26 2021-08-10 Schunk Transit Systems Gmbh Wear measuring system and method

Also Published As

Publication number Publication date
ES2057040T3 (es) 1994-10-16
EP0360197B1 (fr) 1994-08-17
EP0360197A3 (en) 1990-10-03
DE58908209D1 (de) 1994-09-22
DE3832079A1 (de) 1990-03-22

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