DE539110C - Method and device for setting the correct contact pressure for cooperating brushes of electrical machines - Google Patents

Method and device for setting the correct contact pressure for cooperating brushes of electrical machines

Info

Publication number
DE539110C
DE539110C DENDAT539110D DE539110DD DE539110C DE 539110 C DE539110 C DE 539110C DE NDAT539110 D DENDAT539110 D DE NDAT539110D DE 539110D D DE539110D D DE 539110DD DE 539110 C DE539110 C DE 539110C
Authority
DE
Germany
Prior art keywords
contact pressure
setting
electrical machines
brushes
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
Application number
DENDAT539110D
Other languages
German (de)
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.)
HOCHOFENWERK LUEBECK AKT GES
Original Assignee
HOCHOFENWERK LUEBECK AKT GES
Publication date
Application granted granted Critical
Publication of DE539110C publication Critical patent/DE539110C/en
Expired legal-status Critical Current

Links

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
    • H01R39/38—Brush holders
    • H01R39/381—Brush holders characterised by the application of pressure to brush

Landscapes

  • Motor Or Generator Current Collectors (AREA)

Description

VieleStörungen an elektrischen Maschinen, insbesondere an Generatoren mit geringer Spannung und hoher Stromstärke, die bei elektrochemischen Prozessen gebraucht werden, haben ihre Ursache in mangelhaftem Arbeiten der Bürsten bzw. Bürstenhalter. Durch ungleichmäßige Einstellung des Anpreßdruckes können einzelne Bürsten überlastet werden. Sie werden glühend, und die Folge ist ein Bürstenbrand bzw. Kommutatorenbrand, der Betriebsstörungen und erhebliche Unkosten zeitigt. Ein Festbrennen der Bürsten im Kasten kann dieselben Folgen haben. Vorliegende Erfindung beseitigt auf neuem Wege derartige Schwierigkeiten.
Das Verfahren besteht in einer neuen Einstellungsart der Bürstenbelastung. Es wird ermöglicht durch den Einbau einer Meßstrecke für jede Bürste, mittels welcher die Stromaufnahme jeder einzelnen Bürste festgestellt werden kann. Die Einstellung erfolgt nunmehr auf gleichmäßige Strombelastung aller Bürsten, während man früher nur mit Hilfe einer Federwaage auf gleichen Andruck einstellen konnte. Die Zeichnung stellt ein Ausführungsbeispiel dar. Der elektrische Strom gelangt z. B. bei Elektromotoren von der Klemme A über die Meßstrecke B und die Litze C zur Bürste D. Über den Halter E und den Bürstenkasten F kann der Strom nicht fließen, da E von F isoliert ist. Das Metall desKastensi7 ist allseitigmit einer nichtleitenden Emaille überzogen. Durch die Emaillier ung wird i. die Richtigkeit der Messung über B gewährleistet, Many malfunctions in electrical machines, in particular in generators with low voltage and high amperage, which are used in electrochemical processes, are caused by inadequate operation of the brushes or brush holders. Individual brushes can be overloaded due to the uneven setting of the contact pressure. They become glowing, and the result is a brush fire or commutator fire, which causes operational disruptions and considerable costs. Burning of the brushes in the box can have the same consequences. The present invention in a new way overcomes such difficulties.
The method consists of a new way of adjusting the brush load. It is made possible by the installation of a measuring section for each brush, by means of which the current consumption of each individual brush can be determined. The setting is now made for an even current load on all brushes, whereas previously it was only possible to set the same pressure with the help of a spring balance. The drawing shows an embodiment. The electric current reaches z. B. in the case of electric motors from the terminal A via the measuring section B and the strand C to the brush D. The current cannot flow through the holder E and the brush box F because E is isolated from F. The metal of the box 7 is coated on all sides with a non-conductive enamel. The enamelling i. ensures the correctness of the measurement over B,

2. ein Übertreten des Stromes durch die Kastenwand, etwa von G nach H, wirksam verhindert.2. Effectively prevents the current from crossing through the box wall, for example from G to H.

Ein Festbrennen der Bürste im Kasten, das häufig bei hochbelasteten jfriederspannungsmaschinen eintritt, kann nicht erfolgen.Burning of the brush in the box, which is often the case with highly loaded jfriederspachungsmaschinen occurs, cannot take place.

Die Schraube / aus nichtleitendem Material ist fest mit dem Stift L verbunden und ermöglicht über die Ringmutter K eine genaue Einstellung des Andruckes durch die Feder M. Die von der Bürste aufgenommene Strommenge kann mit Hilfe der Meßstrecke B leicht ermittelt werden, und man kann nun alle Bürsten durch Verstellen der Schraube / auf gleiche Strombelastung einstellen.The screw / from non-conductive material is fixedly connected to the pin L and allows on the ring nut K accurate adjustment of the counterpressure by the spring M. The captured by the brush current amount B can be easily determined with the aid of the measuring section, and one can now all Adjust the brushes to the same current load by adjusting the screw /.

Claims (3)

Patentansprüche: 5"Claims: 5 " 1. Verfahren zum Einstellen des richtigen Anpreßdruckes für zusammenarbeitende Bürsten elektrischer Maschinen, dadurch gekennzeichnet, daß die Belastung der einzelnen Bürsten während des Betriebes gemessen und durch Verändern des Anpreßdruckes auf den gewünschten Wert gebracht wird.1. Procedure for setting the correct contact pressure for collaborators Brushes of electrical machines, characterized in that the load on the individual Brushing is measured during operation and brought to the desired value by changing the contact pressure. 2. Vorrichtung zur Ausübung des Verfahrens nach Anspruch 1, gekennzeichnet durch Bürstenhalter mit in den Stromweg eingebauter Meßstrecke.2. Device for performing the method according to claim 1, characterized by brush holder with measuring section built into the current path. 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Bürstenkästen, um falsche Stromwege zu verhüten, aus emailliertem Metall hergestellt sind.3. Device according to claim 1 and 2, characterized in that the brush boxes, in order to prevent false current paths, are made of enamelled metal. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DENDAT539110D Method and device for setting the correct contact pressure for cooperating brushes of electrical machines Expired DE539110C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE539110T

Publications (1)

Publication Number Publication Date
DE539110C true DE539110C (en) 1931-11-21

Family

ID=6558438

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT539110D Expired DE539110C (en) Method and device for setting the correct contact pressure for cooperating brushes of electrical machines

Country Status (1)

Country Link
DE (1) DE539110C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397739A1 (en) * 1977-07-14 1979-02-09 Lear Siegler Inc ELECTRICALLY INSULATED BRUSH HOLDER FOR A DYNAMO-ELECTRIC MACHINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397739A1 (en) * 1977-07-14 1979-02-09 Lear Siegler Inc ELECTRICALLY INSULATED BRUSH HOLDER FOR A DYNAMO-ELECTRIC MACHINE

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