DE958044C - Permanent magnet system for eddy current damping - Google Patents
Permanent magnet system for eddy current dampingInfo
- Publication number
- DE958044C DE958044C DEA15579A DEA0015579A DE958044C DE 958044 C DE958044 C DE 958044C DE A15579 A DEA15579 A DE A15579A DE A0015579 A DEA0015579 A DE A0015579A DE 958044 C DE958044 C DE 958044C
- Authority
- DE
- Germany
- Prior art keywords
- permanent magnet
- magnet system
- eddy current
- current damping
- places
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/10—Braking magnets; Damping arrangements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Description
Die Erfindung betrifft ein Dauermagnetsystem für Wirbelstromdämpfungen, insbesondere ein Zählerbremsmagnetsystem, dessen Dauermagnet in an sich bekannter Weise aus oxydischem Werkstoff besteht, der 5 bis 60 Molprozent Bariumferrit und als Rest einen oder mehrere andere oxydische Stoffe, z. B. Eisenoxyd, enthält. The invention relates to a permanent magnet system for eddy current damping, in particular a counter brake magnet system whose permanent magnet is known per se Way consists of oxidic material, the 5 to 60 mole percent barium ferrite and as the remainder one or more other oxidic substances, e.g. B. iron oxide contains.
Bei Wi rbelstromdämpfungen, insbesondere bei Zählerbremsmagneten, muß die zu bremsende Scheibe beim Durchgang durch den Luftspalt des Magnetsystems von Stellen hohen Magnetflusses zu Stellen geringen Magnetflusses, und zwar möglichst mehrmals, wandern. Nach der Erfindung werden daher die Polschuhe mit Vertiefungen versehen, die den Luftspalt stellenweise erweitern. With eddy current attenuation, especially with counter brake magnets, the disc to be braked must pass through the air gap of the magnet system from places with high magnetic flux to places with low magnetic flux, and as far as possible several times, wander. According to the invention, therefore, the pole pieces with depressions provided that widen the air gap in places.
In der Zeichnung ist als Ausführungsbeispiel des Erflndungsgegenstandes ein Zählerbremsmagnet in Ansicht dargestellt. In the drawing is an exemplary embodiment of the subject matter of the invention a counter brake magnet shown in view.
Der Dauermagnetkörper ist mit 4 bezeichnet; seinen Höhe ist im Verhältnis zu seinen sonstigen Abmessungen gering. Der aus Eisen bestehende Bügel I bildet den magnetischen Rückschliiß. Die Polschuhe 3 begrenzen den Luftspalt 2. Sie weisen Ausneh,mungen 5 auf, die den Luftspalt stellenweise erweitern und daher Stellen geringen Magnetflusses darstellen, während an den erhöhten Teilen 6 der Polschuhe der Magnetfluß sehr groß ist. Beim dargestellten Ausführungsbeispiel sind zwei Ausnehmungen 5 vorgesehen. Man kann aber auch mit einer oder mehr als zwei Ausnehmungen arbeiten. The permanent magnet body is denoted by 4; its height is in proportion small compared to its other dimensions. The iron bracket I forms the magnetic return. The pole pieces 3 limit the air gap 2. They point Exceptions 5, which widen the air gap in places and therefore places represent low magnetic flux, while on the raised parts 6 of the pole pieces the magnetic flux is very large. In the illustrated embodiment, there are two recesses 5 provided. But you can also work with one or more than two recesses.
Es kann auch genügen, einen Polschuh mit Ausnehmungen zu versehen und in dem gegenüberstehenden Pol schuh keine Ausnehmungen vorzusehen.It can also be sufficient to provide a pole piece with recesses and to provide no recesses in the opposite pole shoe.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA15579A DE958044C (en) | 1952-04-22 | 1952-04-22 | Permanent magnet system for eddy current damping |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA15579A DE958044C (en) | 1952-04-22 | 1952-04-22 | Permanent magnet system for eddy current damping |
Publications (1)
Publication Number | Publication Date |
---|---|
DE958044C true DE958044C (en) | 1957-02-14 |
Family
ID=6923454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA15579A Expired DE958044C (en) | 1952-04-22 | 1952-04-22 | Permanent magnet system for eddy current damping |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE958044C (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR914799A (en) * | ||||
BE504686A (en) * | 1950-09-19 | |||
DE675745C (en) * | 1936-07-10 | 1939-05-16 | Siemens Schuckertwerke Akt Ges | Holders of permanent magnets |
DE721973C (en) * | 1940-01-17 | 1942-06-25 | Max Baermann Jr | Automatic short-circuit device with permanent magnets |
DE723328C (en) * | 1939-01-31 | 1942-08-03 | Siemens Ag | Magnet system |
DE723872C (en) * | 1932-07-09 | 1942-08-12 | Mitsubishi Electric Corp | Permanent magnet |
-
1952
- 1952-04-22 DE DEA15579A patent/DE958044C/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR914799A (en) * | ||||
DE723872C (en) * | 1932-07-09 | 1942-08-12 | Mitsubishi Electric Corp | Permanent magnet |
DE675745C (en) * | 1936-07-10 | 1939-05-16 | Siemens Schuckertwerke Akt Ges | Holders of permanent magnets |
DE723328C (en) * | 1939-01-31 | 1942-08-03 | Siemens Ag | Magnet system |
DE721973C (en) * | 1940-01-17 | 1942-06-25 | Max Baermann Jr | Automatic short-circuit device with permanent magnets |
BE504686A (en) * | 1950-09-19 |
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