DE454279C - Device for keeping the speed of machines constant, especially high-frequency machines - Google Patents
Device for keeping the speed of machines constant, especially high-frequency machinesInfo
- Publication number
- DE454279C DE454279C DET30144D DET0030144D DE454279C DE 454279 C DE454279 C DE 454279C DE T30144 D DET30144 D DE T30144D DE T0030144 D DET0030144 D DE T0030144D DE 454279 C DE454279 C DE 454279C
- Authority
- DE
- Germany
- Prior art keywords
- machines
- speed
- especially high
- frequency
- contact
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/182—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays whereby the speed is regulated by using centrifucal devices, e.g. switch, resistor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
Vorrichtung zur Konstanthaltung der Drehzahl von 1Vlaschinen, insbesondere von Hochfrequenz-tlaschinen. Die gebräuchlichen mechanischen Touren regler für Hochfrequenz-Maschinen (Flieh kraftregler ) arbeiten nach dem Tirrillprinzip, d. h. durch periodisches öffnen und Schlie-Len von Widerständen.Device for keeping the speed of 1Vlaschinen constant, in particular of high frequency machines. The common mechanical tour controls for high-frequency machines (Centrifugal force regulator) work according to the Tirrill principle, d. H. by periodic opening and closing of resistors.
Dieses öffnen und Schließen bzw. nur die Änderung des Kontaktdruckes erfolgt dabei meistens unter Wirkung einer Federkraft und unter Wirkung der Schwerkraft, welch letztere in bezug auf die Federkraft während einer Umdrehung den Wirkungssinn ändert.This opens and closes or only changes the contact pressure usually takes place under the action of a spring force and under the action of gravity, which latter, in relation to the spring force during one revolution, determines the direction of action changes.
Das hat den Nachteil, daß das Verhältnis der periodischen Kraft zur ausbiegenden Zentrifugalkraft durch die mechanischen Eigenschaften des Federmaterials fest gegeben ist.This has the disadvantage that the ratio of the periodic force to bending centrifugal force due to the mechanical properties of the spring material is firmly given.
Gemäß der Erfindung wird dieser Nachteil dadurch behoben, daß die periodische Schließung und Öffnung des Kontaktes ganz oder teilweise unabhängig von der Schwerkraft durch eine exzentrische Anordnung des kontaktgebenden rotierenden Teiles und entspre#-hende Grientierung eines oder mehrerer festen Gegenkontakte gemacht wird.According to the invention, this disadvantage is eliminated in that the periodic closing and opening of the contact completely or partially independently by gravity through an eccentric arrangement of the contact-making rotating Part and corresponding orientation of one or more fixed mating contacts is made.
Die Abbildung zeigt ein Ausführungsbeispiel nach der Erfindung. A ist entweder die -lchse des Umformers (d. h. des Elektroinotors oder der von diesem angetriebenen Dynamo) oder eine besondere mit dem Umformer irgendwie mechanisch gekuppelte Achse, die an ihrer etwa viereckig geschnittenen Stelle in einen Führungsschlitz der exzentrisch angeordneten Scheibe S eingreift. Der Zentrifugalkraft wird durch die Feder F entgegengewirkt. Wenn die Achse A senkrecht steht, ist der Einfluß der Schwerkraft auf dem Ausschlag der Scheibe vollkommen ausgeschaltet. Die Ausbiegung der Feder ändert sich ausschließlich entsprechend der jeweiligen Fliehkraft, d. h. je nach der Drehzahl. Da infolge der Exzentrizität verschiedene Randpunkte der Scheibe von der Drehachse verschieden abstehen, so dauert der Kontaktschluß zwischen der Scheibe S und einem festen Gegenkontakt K nur während eines kleinen Bruchteiles einer Umdrehung, nämlich solange die von der Drehachse am meisten entfernte Randpartie an dem betreffenden Gegenkontakt 1K vorbeigleitet. Die Kontaktschließung erfolgt an jedem Gegenkontakt 1K einmal während einer Umdrehung, und die Schließungsdauer wird nur von der Exzentrizität, d. h. von der Drehzahl, abhängig.The figure shows an embodiment according to the invention. A. is either the axis of the converter (i.e. the electric motor or that of it powered dynamo) or a special one with the converter somehow mechanical coupled axle, which at its roughly square cut point in a guide slot the eccentrically arranged disk S engages. The centrifugal force is due to the spring F counteracted. If the axis A is perpendicular, the influence is the Gravity on the deflection of the disc completely switched off. The curve the spring changes only according to the respective centrifugal force, i.e. H. depending on the speed. Since, due to the eccentricity, different edge points of the Disc protrude differently from the axis of rotation, the contact closure lasts between the disk S and a fixed mating contact K only during a small fraction one revolution, namely as long as the edge part furthest away from the axis of rotation slides past the relevant mating contact 1K. The contact closes at each mating contact 1K once during one revolution, and the duration of the closure is only affected by the eccentricity, i.e. H. depending on the speed.
Will man die Schließungsfrequenz vergrößern, so kann man um die Scheibe herum mehrere Gegenkontakte K anbringen, die nacheinander geschlossen und geöffnet werden.If you want to increase the closing frequency, you can go around the pane around several mating contacts K attach, which are closed and opened one after the other will.
Ist die Antriebswelle A der Scheibe S wagerezht, so kommt auch die Schwerkraft mehr oder weniger zur Wirkung. Wenn aber die Exzentrizität so groß ist, daß die über den mittleren Ausschlag der Scheibe überlagerten, durch die Schwerkraft verursachten Schwingungsamplituden gegenüber der Exzentrizität zu vernachlässigen sind, so tritt der Einfluß der Schwerkraft zurück. Außerdem kann man, wenn man einen oder, wie in der Zeichnung dargestellt, zwei Gegenkontakte hat, diese in eine Zone versetzen, wo die durch die Schwerkraft bedingten Ausschlagsänderungen der Scheibe nur klein sind.If the drive shaft A of the disk S is horizontal, the force of gravity also comes into play to a greater or lesser extent. If, however, the eccentricity is so great that the vibration amplitudes superimposed over the center deflection of the disk and caused by gravity are negligible compared to the eccentricity, then the influence of gravity recedes. In addition, if you have one or, as shown in the drawing, two mating contacts, you can move them to a zone where the changes in deflection of the disc caused by gravity are only small.
Zur Verminderung der Reibungsverluste während der Kontaktgebung empfiehlt =es sich, die Gegenkontakte I( als drehbare Rädchen bzw. Scheibchen auszuführen mit einer mehr oder weniger gut abgefedert gelagerten Drehachse, derart, daß der Kontakt an den Randflächen der erwähnten Scheibchen stattfindet, so daß sie während der Kontaktzeit mitgedreht werden und dadurch eine schleifende Reibung an den Kontaktstellen beseitigt oder sehr wesentlich vermindert wird.Recommended to reduce friction losses during contact = the mating contacts I (can be designed as rotatable small wheels or disks with a more or less well cushioned axis of rotation, such that the Contact takes place on the edge surfaces of the discs mentioned, so that they during the contact time are rotated and thus a grinding friction at the contact points eliminated or very substantially reduced.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET30144D DE454279C (en) | 1925-04-01 | 1925-04-01 | Device for keeping the speed of machines constant, especially high-frequency machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET30144D DE454279C (en) | 1925-04-01 | 1925-04-01 | Device for keeping the speed of machines constant, especially high-frequency machines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE454279C true DE454279C (en) | 1928-01-04 |
Family
ID=7555397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET30144D Expired DE454279C (en) | 1925-04-01 | 1925-04-01 | Device for keeping the speed of machines constant, especially high-frequency machines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE454279C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE742966C (en) * | 1938-02-05 | 1943-12-15 | Olga Uhlendorff Geb Engelhardt | Loading device for circulating ovens |
-
1925
- 1925-04-01 DE DET30144D patent/DE454279C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE742966C (en) * | 1938-02-05 | 1943-12-15 | Olga Uhlendorff Geb Engelhardt | Loading device for circulating ovens |
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