DE939392C - Roller table motor - Google Patents

Roller table motor

Info

Publication number
DE939392C
DE939392C DED8787A DED0008787A DE939392C DE 939392 C DE939392 C DE 939392C DE D8787 A DED8787 A DE D8787A DE D0008787 A DED0008787 A DE D0008787A DE 939392 C DE939392 C DE 939392C
Authority
DE
Germany
Prior art keywords
hollow
short
roller table
table motor
rods
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
DED8787A
Other languages
German (de)
Inventor
Otto Dipl-Ing Meyer
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.)
Demag Zug GmbH
Original Assignee
Demag Zug GmbH
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
Application filed by Demag Zug GmbH filed Critical Demag Zug GmbH
Priority to DED8787A priority Critical patent/DE939392C/en
Application granted granted Critical
Publication of DE939392C publication Critical patent/DE939392C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/22—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H02K17/168—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having single-cage rotors

Description

Rollgangsmotor Das Patent 925 3o2 hat einen Rollgangsmotor zum Gegenstand, dessen durch Spritzguß hergestellte Läuferwicklung aus Messing oder einer ähnlichen Legierung mit ungefähr gleichem spezifischem elektrischem Widerstand und etwa gleicher Wärmefestigkeit besteht. Ein solcher Läufer wird den hohen Wärmebeanspruchungen gerecht, denen ein Rollgangsmotor infolge der Beschleunigungsarbeit, besonders im Reversierbetrieb, ausgesetzt ist.Roller table motor The subject of patent 925 3o2 is a roller table motor, its rotor winding made of brass or the like, produced by injection molding Alloy with approximately the same specific electrical resistance and approximately the same There is heat resistance. Such a runner will withstand high thermal loads fair, which a roller table motor due to the acceleration work, especially in Reversing operation, is suspended.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, einen derartigen Läufer durch Anwendung einer Kühleinrichtung noch weiter zu verbessern. Es ist bekannt, im Läufer großer Elektromotoren und Generatoren Kühlkanäle vorzusehen, die von einem Kühlluftstrom durchflossen werden. Bei den gedrängt gebauten Rollgangsmotoren ist dagegen nur wenig Raum für derartige besondere Kanäle, wenn man nicht den magnetischen Widerstand wesentlich erhöhen will.The present invention has set itself the task of such To improve runners even further by using a cooling device. It is known, to provide cooling ducts in the rotor of large electric motors and generators that are fed by a Cooling air flow are flowed through. In the case of the crowded roller table motors on the other hand, there is little room for such special channels if one does not use the magnetic one Wants to increase resistance significantly.

Gemäß der Erfindung werden Kühlkanäle im Läufer dadurch gebildet, daß zumindest ein Teil der Kurzschlußstäbe der gespritzten Läuferwicklung hohl ausgebildet wird.According to the invention, cooling channels are formed in the rotor by that at least some of the short-circuit rods of the injection-molded rotor winding are hollow will.

Wo es ausreicht, nur einen Teil der Läuferstäbe hohl auszubilden, kann man für diese auch Messingrohre verwenden, deren über die Eisenpaketlänge hinausragenden Enden von den gegossenen Kurzschlußringen umschlossen werden. Damit beim Spritzvorgang eine innige Verbindung zwischen den Kurzschlußringen und den Rohrenden gewährleistet ist, werden diese beispielsweise versilbert.Where it is sufficient to make only part of the rotor bars hollow, you can also use brass tubes for this, the length of which protrudes beyond the length of the iron stack Ends are enclosed by the cast short-circuit rings. In order to an intimate connection between the short-circuit rings and the Pipe ends are guaranteed, they are silver-plated, for example.

Der Durchgangsquerschnitt der hohlen Stäbe kann an ein beliebiges Kühlsystem angeschlossen werden, insbesondere auch an ein Umlaufsystem, in welchem die aus den Stäben austretende erhitzte Luft durch Kühlrippen am Umfang des Motorgehäuses wieder abgekühlt wird, um dann dem Anker erneut zuzuströmen.The passage cross-section of the hollow rods can be any Cooling system are connected, in particular also to a circulation system in which the heated air emerging from the rods through cooling fins on the circumference of the motor housing is cooled again in order to then flow towards the armature again.

Bei Kurzschlußmotoren üblicher Bauart ist es bekannt, die Kurzschlußstäbe hohl auszubilden und von einem Kühlmittel durchfließen zu lassen. Nach dem Stande der Technik ist daher der Anmeldegegenstand nur im Zusammenhang mit dem Gegenstand des Hauptpatents zu werten.In short-circuit motors of the usual type, it is known to use the short-circuit rods to be hollow and to allow a coolant to flow through it. According to the state technology is therefore the subject of the application only in connection with the subject of the main patent.

Claims (4)

PATENTANSPRÜCHE: I. Rollgangsmotor mit einer durch Spritzguß hergestellten Läuferwicklung aus Messing oder ähnlichen Legierungen nach Patent 925 3o2, gekennzeichnet durch hohle, von einem Kühlmittel durchflossene Kurzschlußstäbe. PATENT CLAIMS: I. Roller table motor with a manufactured by injection molding Rotor winding made of brass or similar alloys according to patent 925 3o2, marked by hollow short-circuit rods through which a coolant flows. 2. Rollgangsmotor nach Anspruch I, gekennzeichnet durch hohl gespritzte Kurzschlußstäbe. 2. Roller table motor according to claim I, characterized by hollow injection molded short-circuit rods. 3. Rollgangsmotor nach Anspruch I bzw. 2, dadurch gekennzeichnet, daß die Kurzschlußstäbe teils vollen und teils hohlen Querschnitt aufweisen. 4. Rollgangsmotor nach den Ansprüchen I bis 3, dadurch gekennzeichnet, daß die hohlen Kurzschlußstäbe an einen Kühlluftumlauf angeschlossen sind, durch welchen die in den Hohlstäben erwärmte Luft von Kühlrippen am Umfang des Motorgehäuses abgekühlt und dem Kurzschlußläufer wieder zugeführt wird. 5. Verfahren zum Preßgießen von Messingläufern nach Anspruch I, dadurch gekennzeichnet, daß in einen Teil der Nuten Messingrohre eingesetzt werden, während durch die anderen Nuten von einer Seite der Gußform aus das Preßmaterial durch die hohlen Nutenquerschnitte zur Erzeugung eines Kurzschlußringes an der Außenseite der Form hindurchgepreßt wird. Angezogene Druckschriften: Deutsche Patentschriften Nr. I92 525, 3I2 247, 337 56I, 6I9 52o; schweizerische Patentschrift Nr. 99 387; USA.-Patentschrift Nr. I 996 46o; Auszüge deutscher Patentanmeldungen Vol. 3. Roller table motor according to claim 1 or 2, characterized in that the short-circuit rods are partly full and partly have a hollow cross-section. 4. Roller table motor according to claims I. to 3, characterized in that the hollow short-circuit rods are connected to a cooling air circulation are connected, through which the heated air in the hollow rods of cooling fins cooled on the circumference of the motor housing and fed back to the squirrel cage will. 5. A method for pressure casting of brass rotors according to claim I, characterized in that that brass tubes are inserted into one part of the grooves, while through the other Grooves from one side of the mold from the molding material through the hollow groove cross-sections pressed through to create a short-circuit ring on the outside of the mold will. Attached publications: German patent specifications No. I92 525, 3I2 247, 337 56I, 6I9 52o; Swiss Patent No. 99 387; U.S. Patent No. I 996 46o; Excerpts from German patent applications Vol. 4, S. 38, Anmeldung G 107 073 VIII d/21 d i.4, p. 38, registration G 1 07 073 VIII d / 21 d i.
DED8787A 1951-04-28 1951-04-28 Roller table motor Expired DE939392C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED8787A DE939392C (en) 1951-04-28 1951-04-28 Roller table motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED8787A DE939392C (en) 1951-04-28 1951-04-28 Roller table motor

Publications (1)

Publication Number Publication Date
DE939392C true DE939392C (en) 1956-02-23

Family

ID=7032674

Family Applications (1)

Application Number Title Priority Date Filing Date
DED8787A Expired DE939392C (en) 1951-04-28 1951-04-28 Roller table motor

Country Status (1)

Country Link
DE (1) DE939392C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261946B (en) * 1965-02-23 1968-02-29 Elmasch Bau Sachsenwerk Veb Directly liquid-cooled rotor winding of large asynchronous machines
FR2500965A1 (en) * 1981-02-27 1982-09-03 Mueller Arnold INDUCTION MOTOR HAVING A SHORT-CIRCUIT ROTOR
DE102005030797A1 (en) * 2005-06-29 2007-01-04 Siemens Ag Squirrel cage of an induction machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312247C (en) *
DE192525C (en) *
DE337561C (en) * 1917-12-29 1921-09-28 Michael Seidner Dr Ing Arrangement for cooling electrical machines
CH99387A (en) * 1921-12-24 1923-05-16 Oerlikon Maschf Cooling device for slot windings in electrical machines.
US1996460A (en) * 1933-03-31 1935-04-02 Chicago Pneumatic Tool Co Ventilated induction motor
DE619520C (en) * 1934-02-07 1935-10-02 Aeg Device for cooling the runner of electrical machines by re-cooled fluids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE312247C (en) *
DE192525C (en) *
DE337561C (en) * 1917-12-29 1921-09-28 Michael Seidner Dr Ing Arrangement for cooling electrical machines
CH99387A (en) * 1921-12-24 1923-05-16 Oerlikon Maschf Cooling device for slot windings in electrical machines.
US1996460A (en) * 1933-03-31 1935-04-02 Chicago Pneumatic Tool Co Ventilated induction motor
DE619520C (en) * 1934-02-07 1935-10-02 Aeg Device for cooling the runner of electrical machines by re-cooled fluids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1261946B (en) * 1965-02-23 1968-02-29 Elmasch Bau Sachsenwerk Veb Directly liquid-cooled rotor winding of large asynchronous machines
FR2500965A1 (en) * 1981-02-27 1982-09-03 Mueller Arnold INDUCTION MOTOR HAVING A SHORT-CIRCUIT ROTOR
DE102005030797A1 (en) * 2005-06-29 2007-01-04 Siemens Ag Squirrel cage of an induction machine

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