DE1068401B

DE1068401B -

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Publication number: DE1068401B
Application number: DENDAT1068401D
Authority: DE
Publication date: 1959-11-05

Description

DEUTSCHESGERMAN

ANMELDETAG: 22. JANUAR 1957 REGISTRATION DATE: JANUARY 22, 1957

B EKANNTMACHUNG DER ANMELDUNG UND AUSGABE DERNOTICE THE REGISTRATION AND ISSUE OF THE

AUSLEGESCHRIFT: 5. november 1959 Laid: 5 november 1959

Die Erfindung betrifft eine Nachsetz- und Haltevorrichtung für selbstbackende Elektroden von Elektroöfen.The invention relates to a Nachsetz- and holding device for self-baking electrodes from Electric ovens.

Die selbstbackenden Elektroden bestehen aus einem Blechmantel als Metallarmierung, in den die durch die aufsteigende Ofenhitze und die beim Stromdurchgang erzeugte Wärme zu einem festen Körper brennende Elektrodenmasse eingefüllt wird. Während des Betriebes werden die Elektroden durch Anschweißen neuer Blechschüsse und Nachfüllen der Masse verlängert. Um die Nachsetzvorrichtung nicht der Ofenhitze auszusetzen, läßt man sie in der Regel am oberen, noch nicht mit Elektrodenmasse gefüllten Teil des Elektrodenmantels angreifen. Bei der geringen Blechstärke von 1 bis 2 mm des Elektrodenmantels und dem beträchtlichen Gewicht der Elektroden bereitet die Halterung der Elektroden nur durch Anpreßdruck Schwierigkeiten. Man hat daher schon verschiedene Vorschläge zur Überwindung dieser Schwierigkeiten gemacht. So hat man vorgeschlagen, in den Elektroden Ringnuten anzubringen und die Haltevorrichtung in diese eingreifen zu lassen. Ein anderer Vorschlag geht dahin, an den Elektrodenmantel ein Eisenband flach anzuschweißen, das die Elektroden trägt und über eine Bremsvorrichtung das Nachlassen derselben gestattet. Die Durchführung der Bänder durch die Kontaktbacken ist oft schwierig. Außerdem können Fehler beim Anschweißen zum Reißen des Bandes führen.The self-baking electrodes consist of a sheet metal jacket as a metal reinforcement into which the the rising furnace heat and the heat generated by the passage of electricity to a solid body burning electrode mass is filled. During operation, the electrodes are welded on new sheet metal shots and refilling of the mass extended. Not about the adjustment device To expose them to the heat of the oven, they are usually left on the upper part, which is not yet filled with electrode material Attack part of the electrode jacket. With the thin sheet metal thickness of 1 to 2 mm of the electrode jacket and the considerable weight of the electrodes only prepares the holder for the electrodes difficulties due to contact pressure. There are therefore already various proposals for overcoming it this made trouble. It has been proposed to make annular grooves in the electrodes and to allow the holding device to engage in it. Another suggestion is to use the electrode jacket an iron band to be welded flat, which carries the electrodes and via a braking device the Easing of the same is permitted. It is often difficult to pass the tapes through the contact jaws. In addition, errors in the welding process can cause the tape to tear.

Bei Nachsetz- und Haltevorrichtungen für selbstbackende Elektroden ist es auch bekannt, aus mehreren Teilringen bestehende Haltevorrichtungen zu verwenden und am Oberende der Elektrode zwei die Elektroden tragende Klemmvorrichtungen vorzusehen, von denen eine über Federn auf das Tragrohr abgestützt ist, um das geregelte Niedergehen der Elektrode beim Nachsetzen zu gewährleisten. Die Klemme für die Stromzuführung ist unter der Haltevorrichtung angeordnet und mit dieser verbunden. Bei diesen bekannten Nachsetz- und Haltevorrichtungen bestehen die die Elektrode tragenden Klemmvorrichtungen aus äußeren Anpreßbacken und inneren Widerlagern. Die Notwendigkeit, im Innern des Elektrodenmantels Widerlager anzuordnen, um den notwendigen Anpreß druck anwenden zu können, kompliziert die Vorrichtung; außerdem behindern die Widerlager das Einfüllen der Elektrodenmasse.In the case of relocating and holding devices for self-baking electrodes, it is also known from several Partial rings to use existing holding devices and two at the top of the electrode Provide clamping devices carrying electrodes, one of which is attached to the support tube by means of springs is supported to ensure that the electrode descends in a controlled manner when repositioning it. the The clamp for the power supply is arranged under the holding device and connected to it. In these known relocating and holding devices, there are clamping devices carrying the electrode from outer pressure jaws and inner abutments. The need to be inside the To arrange the electrode jacket abutment in order to be able to apply the necessary contact pressure, complicates the device; in addition, the abutments hinder the filling of the electrode compound.

Es sind auch bereits Elektroden bekannt deren Blechmantel aus einer Anzahl von seitlich aneinanderstoßenden Platten besteht, die durch auswärts gerichtete, in der Längsrichtung der Elektroden verlaufende Flansche miteinander verbunden sind. Diese als Flansche bezeichneten radial abstehenden Längsstreifen sollen lediglich zur Führung der Elek-Nachsetz- und Haltevorrichtung
für selbstbackende Elektroden
von ElektroöfenElectrodes are also already known, the sheet metal jacket of which consists of a number of laterally abutting plates which are connected to one another by outwardly directed flanges extending in the longitudinal direction of the electrodes. These radially protruding longitudinal strips, referred to as flanges, are only intended to guide the electrical adjustment and holding device
for self-baking electrodes
of electric ovens

Anmelder:Applicant:

Aktiengesellscriaft für Unternehmungen der Eisen- und Stahlindustrie,
Essen, Altendorfer Str. 103Joint stock company for companies in the iron and steel industry,
Essen, Altendorfer Str. 103

Karl Heine, Hannover,Karl Heine, Hanover,

und Wilhelm Jentschitsch, Essen,
sind als Erfinder genannt wordenand Wilhelm Jentschitsch, Essen,
have been named as inventors

trode im Elektrodenhalter und zur Herstellung des erforderlichen Kontaktes zwischen den Kontaktplatten und der Elektrode dienen. Die Heranziehung der abstehenden Längsstreifen für die Halterung der Elektroden ist noch nicht vorgeschlagen worden.trode in the electrode holder and to establish the necessary contact between the contact plates and serve the electrode. The use of the protruding longitudinal strips for holding the Electrodes has not yet been proposed.

Den Gegenstand der Erfindung bildet eine für Elektroöfen bestimmte Nachsetz- und Haltevorrichtung für mit Metallarmierung versehene selbstbakkende Elektroden, deren Metallarmierung auf der Außenseite mit mindestens einem radial abstehenden Längsstreifen versehen ist. Erfindungsgemäß greift die Haltevorrichtung an den Längsstreifen der Elektroden an.The subject of the invention is a set-up and holding device intended for electric furnaces for self-baking electrodes with metal reinforcement, the metal reinforcement on the The outside is provided with at least one radially protruding longitudinal strip. According to the invention takes effect the holding device on the longitudinal strips of the electrodes.

In der Zeichnung ist eine Elektrode mit zwei abstehenden Längsstreifen und als Ausführungsbeispiel des Erfindungsgegenstandes eine Nachsetz- und Haltevorrichtung für eine solche Elektrode dargestellt, und zwar zeigtThe drawing shows an electrode with two protruding longitudinal strips and as an exemplary embodiment of the subject matter of the invention shows a relocating and holding device for such an electrode, namely shows

Fig. 1 die Elektrode in Seitenansicht,
Fig. 2 dieselbe Elektrode in Draufsicht,
Fig. 3 die Nachsetz- und Haltevorrichtung in Seitenansicht, 1 shows the electrode in side view,
2 the same electrode in plan view,
3 shows the adjustment and holding device in side view,

Fig. 4 die Haltevorrichtung nach Fig. 3 in Draufsieht, 4 shows the holding device according to FIG. 3 in plan,

Fig. 5 eine Einzelheit der Fig. 4.FIG. 5 shows a detail of FIG. 4.

Die Metallarmierung der in Fig. 1 und 2 dargestellten Elektrode wird aus zwei zu Halbkreisen gebogenen Blechschalen 1 und 2 gebildet, die nach innen mit an sich bekannten Innenarmierungen 3 versehen sind, die den elektrischen Strom leiten. Die Kanten der Blechschalen 1 und 2 sind nach außen abgewinkelt und bilden zwei radiale Streifen 4. Der Innenraum der Blechschalen 1 und 2 wird mit Elektroden-The metal reinforcement of the electrode shown in FIGS. 1 and 2 is bent from two into semicircles Sheet metal shells 1 and 2 are formed, which are provided on the inside with inner reinforcements 3 known per se that conduct electricity. The edges of the sheet metal shells 1 and 2 are angled outwards and form two radial strips 4. The interior of the sheet metal shells 1 and 2 is covered with electrode

909 647/338909 647/338

Claims

mass filled in. A tongue 3 can be grasped between every two angled sheet metal edges. The number of sheet metal strips 4 can of course also be more than two. They could also be connected to the sheet metal jacket by welding. The relocating and holding device shown in FIGS. 3 to 5 consists of the socket 5, which is used to supply power, and the holding device 6, to which it is connected by the carrying device 7. The current supplied through the line 8 is passed through the pressure jaws 9 onto the electrode casing 1, 2 and through the tongues 3 into the electrode mass. The sheet metal strips are passed between the contact jaws 9. The support device 7 can be raised and lowered by means of a winch (not shown) by means of wire ropes 10 which are fastened to the arms 11. Compression springs 12, on which the holding device 6 rests, are provided on the support device 7. The latter consists of two partial rings 13 and 14 which are articulated to one another by hinges 15 and are pressed together by the spring 16 with the bolt 17 so that the clamping pieces 18 can hold the weight of the electrodes through the frictional engagement achieved. The pressure of the clamping pieces 18 on the longitudinal strips 4 of the electrode can be very great, so that the friction is sufficient to hold the electrodes. The spring force can be completely or partially canceled by the piston 19. In the example shown, the weight of the electrode is borne jointly by the holder 5 and the holding device 6. The contact pressure of the electrode holder 5 can be largely restricted. To reposition the electrode, the pressure of the holder 5 is reduced to such an extent that the electrode slides through the contact jaws 9. Since the frictional engagement of the clamping pieces 18 still exists, the downward movement is limited by the spring travel of the helical springs 12. If the contact pressure of the contact jaws 9 is increased again and the pressure of the spring 16 is reduced, the holding device 6 is lifted up again by the pressure of the springs 12. This readjustment process can be repeated until the readjustment has taken place to the desired extent. The relocating and holding device according to the invention has the advantage that the clamping pieces producing the frictional connection do not press on the thin-walled electrode casing, but clamp sheet metal strips so that the specific contact pressure can be very high. The clamping pieces can therefore have small dimensions. The electrodes can be readjusted in the smallest of steps, as the metal strips can run along the entire length of the electrode jacket. The welding of the jacket sections and the filling of the electrode compound can take place unhindered. Patent claims:

1. Adjustment and holding device intended for electric furnaces for those provided with metal reinforcement self-baking electrodes with metal reinforcement on the outside with at least is provided with a radially protruding longitudinal strip, characterized in that the holding device attacks the longitudinal strips of the electrodes.

2. Apparatus according to claim 1, characterized by the use of a known per se Way consisting of several partial rings holding device, their articulated with each other connected partial rings next to the joints have pressure pieces that when pressed together • the partial rings pinch the longitudinal strips of the electrode.

3. Apparatus according to claim 1 or 2, characterized by the compound known per se the holding device with the socket below for the power supply.

Considered publications:
German Patent Nos. 568 927, 609 461, 278, 868 643;

German Auslegeschrift D 12784 VIII d / 21 h (published on August 16, 1956);

Swiss Patent No. 110 367.

1 sheet of drawings

® 909 6«ß38 10.® 909 6 «ß38 10. 5959