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EP0133877B1 - Charging and discharging device for furnaces, particularly for tunnel furnaces with trucks and rotary furnaces - Google Patents

Charging and discharging device for furnaces, particularly for tunnel furnaces with trucks and rotary furnaces Download PDF

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Publication number
EP0133877B1
EP0133877B1 EP84106325A EP84106325A EP0133877B1 EP 0133877 B1 EP0133877 B1 EP 0133877B1 EP 84106325 A EP84106325 A EP 84106325A EP 84106325 A EP84106325 A EP 84106325A EP 0133877 B1 EP0133877 B1 EP 0133877B1
Authority
EP
European Patent Office
Prior art keywords
furnaces
charging
hearth
supporting arm
furnace
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
EP84106325A
Other languages
German (de)
French (fr)
Other versions
EP0133877A2 (en
EP0133877A3 (en
Inventor
Heinrich Dipl.-Ing. Patalon
Alfred Dipl.-Ing. Mues
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.)
Rheiner Maschinenfabrik Windhoff Akt-Ges
Didier Engineering GmbH
Original Assignee
Rheiner Maschinenfabrik Windhoff Akt-Ges
Didier Engineering 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 Rheiner Maschinenfabrik Windhoff Akt-Ges, Didier Engineering GmbH filed Critical Rheiner Maschinenfabrik Windhoff Akt-Ges
Priority to AT84106325T priority Critical patent/ATE41995T1/en
Publication of EP0133877A2 publication Critical patent/EP0133877A2/en
Publication of EP0133877A3 publication Critical patent/EP0133877A3/en
Application granted granted Critical
Publication of EP0133877B1 publication Critical patent/EP0133877B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/06—Charging or discharging machines on travelling carriages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0046—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising one or more movable arms, e.g. forks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0069—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities the device being suspended, e.g. from a crane

Definitions

  • the invention relates to a charging and decharging device for heating ovens according to the preamble of the main claim.
  • Such a charging or decharging device is known from DE-PS 869 974.
  • the material to be heated is deposited or lifted off by the rotary movement of trough-shaped levers on the stove.
  • the levers are carried by reciprocating tappets, which are only supported on one side and therefore inclined positions of the heating material in relation to the stove benches cannot be ruled out.
  • the stove benches can be damaged.
  • the object of the present invention is to ensure a smooth placement and lifting of the heating material on the stove or the ceramic stove benches, neither displacement movements between the heating material and the storage surface occurring, nor high surface pressures due to inclined or tilted heating material being dispensed.
  • Fig. 1, 1 generally denotes a device for heating billets, slabs or the like, which consists of an actual furnace 2 through which the bogie wagon, not shown, is pushed in the direction of the arrow.
  • the bogie wagons, not shown, are loaded by a charging device 3 and unloaded again at the end of the furnace by a decharging device 4.
  • the bogie wagons After leaving the furnace 2, the bogie wagons arrive on a transverse transfer platform 5, with the aid of which they are moved transversely to their previous direction of travel and reach a return track 6.
  • This return track 6 transports the hearth trolleys in the opposite direction to the direction of travel through the furnace to a transverse transfer platform 7, which moves the hearth carriages to the entrance of the furnace 2. There the cycle begins anew along the respective arrow directions.
  • FIG. 2 shows a cross section through the furnace 2 in the region of the charging device 3 on a larger scale.
  • a support arm 11 is arranged on a track 10 which is oriented transversely to the furnace longitudinal axis above the furnace 2 and is mounted in a manner known per se on and on the track 10 so as to be longitudinally movable.
  • the drive means for this as well as for achieving a small stroke movement of the support arm 11 are not shown for reasons of clarity.
  • the support arm 11 has the shape of a U which is open at the bottom, a tube 12 being rotatably mounted on the lower free ends of the two legs of the U and being pivotably arranged with the aid of a hydraulic cylinder 14. Together with several tines 15, the tube 12 forms a lifting fork, the tines 15 being arranged in such a way that they can cooperate with grooves 16 in ceramic banks 17 of bogie wagons 18 in such a way that they dip into these grooves 16 and transversely to the direction of travel of the bogie wagons 18 can detect lying billets or the like by swiveling movement.
  • the height adjustability of the support arm 11 is such that when the tines 15 are pivoted up and the support arm 11 is lowered, the lowest points of the tines 15 are located above the benches 17 of the hearth trolley and that when the prongs 15 are pivoted down but the support arm 11 is raised, the lowest points of the prongs 15 are also above the benches 17 of the bogie 18 are arranged. In these positions, the charging or decharging device can be moved without problems.
  • a charging process is as follows:
  • the support arm 11 moves out of the furnace 2 in the lowered position over the roller table 8 until the tines 15 are above a pre-positioned heat good 9.
  • the distances between the individual rollers of the roller table 9 are dimensioned such that the tines can be pivoted between these rollers.
  • the material to be heated 9 is gripped and then moved into the furnace 2.
  • the support arm 11 is lowered, the tines 15 being immersed in the grooves 16 between the ceramic benches 17 of the bogie wagon 18.
  • the material to be heated is thereby deposited gently on the benches 17, the position of the material to be fixed being able to be fixed by a correspondingly profiled surface of the ceramic benches.
  • the entire charging machine 3 can move laterally out of the oven 2 while the bogie wagon 18 continues to clock by one division. Then the cycle begins again.
  • the newly introduced pieces are attached to the warm material 9 already deposited from the outside. Because this is not done by tongs, only a small distance between the individual pieces of the heating material is required.
  • the oven is decharged in the same way, the opening of the tines 15 in the decharging device 4 being oriented in exactly the opposite direction to that of the charging device 3, so that here the pieces of the heat material 9 to be removed are removed from the outside and not a great distance here either between the individual pieces is necessary.
  • the area of the oven 2 arranged behind the decharging device 4 has a very flat ceiling, which is brought close to the surface of the ceramic benches 17 of the bogie wagon 18, so that doors are no longer required here in order to achieve good heat tightness of the furnace.
  • the area of the furnace 2 in front of the charging device 3 is also designed accordingly.
  • lifting and lowering platforms can also be provided, in which case the return track 6 would run below the furnace 2.
  • the use of a rotary hearth furnace is conceivable, in which case the hearth of the rotary hearth furnace must have annularly arranged benches and annularly arranged grooves corresponding to the illustrated grooves 16, into which the pivotable prongs 15 - such as described above - immerse and swing out.
  • the forces to turn the tube 12 and to pivot the tines 15 are relatively low, and the forces to move and lift the entire device are so low that they can be easily used by relatively small motors.
  • the construction of the actual charging or decharging machine is extremely simple and furthermore does not require any complex feed devices. The simple movements to be carried out, the short distances and the fact that the actual charging or decharging machine can be moved immediately after the tines 15 have been swiveled up, make extremely short cycle times possible.
  • the small stroke of the entire device also simplifies the heat sealing, so that good heat insulation of the stoves can be achieved in conjunction with the pulled-down furnace ends.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

The invention relates to a charging and discharging device with a vertically and longitudinally movable supporting arm. According to the invention, a pivotable lifting fork is provided which is fastened, horizontally and rotatably about its longitudinal axis, to the free ends of a supporting arm extending essentially in the form of a U and open at the bottom.

Description

Die Erfindung betrifft eine Chargier- und Dechargiereinrichtung für Wärmöfen nach dem Oberbegriff des Hauptanspruches.The invention relates to a charging and decharging device for heating ovens according to the preamble of the main claim.

Eine derartige Chargier- bzw. Dechargiereinrichtung ist aus der DE-PS 869 974 bekannt. Bei der bekannten Vorrichtung wird das Wärmgut durch die Drehbewegung von muldenförmigen Hebeln auf dem Ofenherd abgelegt bzw. abgehoben. Die Hebel werden von hin- und hergehenden Stößeln getragen, die nur einseitig gelagert sind und daher sind Schräglagen des Wärmgutes gegenüber den Herdbänken nicht auszuschließen. Die Herdbänke können so beschädigt werden.Such a charging or decharging device is known from DE-PS 869 974. In the known device, the material to be heated is deposited or lifted off by the rotary movement of trough-shaped levers on the stove. The levers are carried by reciprocating tappets, which are only supported on one side and therefore inclined positions of the heating material in relation to the stove benches cannot be ruled out. The stove benches can be damaged.

Aufgabe der vorliegenden Erfindung ist es, ein sanftes Ablegen und Abheben des Wärmgutes auf den Ofenherd oder den keramischen Herdbänken zu gewährleisten, wobei weder Verschiebebewegungen zwischen dem Wärmgut und der Ablagefläche auftreten noch hohe Flächenpressungen aufgrund von schräg oder gekippt gehaltenem und abgegebenen Wärmgut.The object of the present invention is to ensure a smooth placement and lifting of the heating material on the stove or the ceramic stove benches, neither displacement movements between the heating material and the storage surface occurring, nor high surface pressures due to inclined or tilted heating material being dispensed.

Diese Aufgabe wird gemäß dem kennzeichnenden Teil des Hauptanspruches gelöst.This object is achieved in accordance with the characterizing part of the main claim.

Ein Ausführungsbeispiel einer erfindungsgemäßen Chargier- und Dechargiervorrichtung wird anhand der Zeichnungen näher erläutert. Dabei zeigen

  • Fig. 1 schematisch den prinzipiellen Aufbau einer an sich bekannten Vorrichtung zum Erwärmen von Brammen, Knüppeln od. dgl., bei der aber die erfindungsgemäße Chargier- und Dechargiervorrichtung eingesetzt ist,
  • Fig. 2 einen Schnitt gemäß der Linie 2-2 in Fig. 1 in größerem Maßstab und
  • Fig. 3 einen Schnitt gemäß der Linie 3-3 in Fig. 1.
An embodiment of a charging and decharging device according to the invention is explained in more detail with reference to the drawings. Show
  • 1 schematically shows the basic structure of a known device for heating slabs, billets or the like, but in which the charging and decharging device according to the invention is used,
  • Fig. 2 shows a section along the line 2-2 in Fig. 1 on a larger scale and
  • 3 shows a section along line 3-3 in FIG. 1.

In Fig. 1 ist mit 1 allgemein eine Vorrichtung zum Erwärmen von Knüppeln, Brammen od. dgl. bezeichnet, die aus einem eigentlichen Ofen 2 besteht, durch den nicht dargestellte Herdwagen in Pfeilrichtung geschoben werden. Die nicht dargestellten Herdwagen werden durch eine Chargiervorrichtung 3 beladen und am Ende des Ofens durch eine Dechargiervorrichtung 4 wieder entladen.In Fig. 1, 1 generally denotes a device for heating billets, slabs or the like, which consists of an actual furnace 2 through which the bogie wagon, not shown, is pushed in the direction of the arrow. The bogie wagons, not shown, are loaded by a charging device 3 and unloaded again at the end of the furnace by a decharging device 4.

Nach Verlassen des Ofens 2 gelangen die Herdwagen auf eine Querverschiebebühne 5, mit Hilfe derer sie quer zu ihrer bisherigen Fahrtrichtung verschoben werden und auf ein Rücklaufgleis 6 gelangen. Dieses Rücklaufgleis 6 transportiert die Herdwgen gegenläufig zur Fahrtrichtung durch den Ofen zu einer Querverschiebebühne 7, die die Herdwagen zum Eingang des Ofens 2 verschiebt. Dort beginnt der Kreislauf entlang den jeweiligen Pfeilrichtungen von neuem.After leaving the furnace 2, the bogie wagons arrive on a transverse transfer platform 5, with the aid of which they are moved transversely to their previous direction of travel and reach a return track 6. This return track 6 transports the hearth trolleys in the opposite direction to the direction of travel through the furnace to a transverse transfer platform 7, which moves the hearth carriages to the entrance of the furnace 2. There the cycle begins anew along the respective arrow directions.

Fig. 2 zeigt in größerem Maßstab einen Querschnitt durch den Ofen 2 im Bereich der Chargiervorrichtung 3.2 shows a cross section through the furnace 2 in the region of the charging device 3 on a larger scale.

Durch einen Rollgang 8 außerhalb des eigentlichen Ofens 2 wird das Wärmgut 9 nahe an den Ofen 2 bis zu einer durch nicht dargestellte Stopper vorgegebenen Stelle transportiert. Auf einer oberhalb des Ofens 2 quer zur Ofenlängsachse ausgerichteten Fahrbahn 10 ist ein Tragarm 11 angeordnet, der in an sich bekannter Weise an und auf der Fahrbahn 10 längsverfahrbar gelagert ist. Die Antriebsmittel hierzu sowie zum Erreichen einer geringen Hubbewegung des Tragarmes 11 sind aus Gründen der Übersichtlichkeit nicht dargestellt.By means of a roller table 8 outside the actual furnace 2, the heating material 9 is transported close to the furnace 2 to a point specified by stoppers, not shown. A support arm 11 is arranged on a track 10 which is oriented transversely to the furnace longitudinal axis above the furnace 2 and is mounted in a manner known per se on and on the track 10 so as to be longitudinally movable. The drive means for this as well as for achieving a small stroke movement of the support arm 11 are not shown for reasons of clarity.

Der Tragarm 11 weist die Form eines nach unten offenen U auf, wobei an den unteren freien Enden der beiden Schenkel des U ein Rohr 12 drehbar gelagert und mit Hilfe eines Hydrozylinders 14 schwenkbar angeordnet ist. Zusammen mit mehreren Zinken 15 bildet das Rohr 12 eine Hubgabel, wobei die Zinken 15 so angeordnet sind, daß sie mit Nuten 16 in keramischen Bänken 17 von Herdwagen 18 derart zusammenwirken können, daß sie in diese Nuten 16 eintauchen und quer zur Fahrtrichtung der Herdwagen 18 liegende Knüppel od. dgl. durch eine Schwenkbewegung erfassen können.The support arm 11 has the shape of a U which is open at the bottom, a tube 12 being rotatably mounted on the lower free ends of the two legs of the U and being pivotably arranged with the aid of a hydraulic cylinder 14. Together with several tines 15, the tube 12 forms a lifting fork, the tines 15 being arranged in such a way that they can cooperate with grooves 16 in ceramic banks 17 of bogie wagons 18 in such a way that they dip into these grooves 16 and transversely to the direction of travel of the bogie wagons 18 can detect lying billets or the like by swiveling movement.

Die Höhenverstellbarkeit des Tragarmes 11 ist derart bemessen, daß bei hochgeschwenkten Zinken 15 und abgesenktem Tragarm 11 sich die tiefsten Stellen der Zinken 15 oberhalb der Bänke 17 des Herdwagens befinden und daß bei abgeschwenkten Zinken 15 aber gehobenem Tragarm 11 ebenfalls die untersten Stellen der Zinken 15 oberhalb der Bänke 17 des Herdwagens 18 angeordnet sind. In diesen Stellungen kann also die Chargier- bzw. Dechargiervorrichtung problemlos verfahren werden.The height adjustability of the support arm 11 is such that when the tines 15 are pivoted up and the support arm 11 is lowered, the lowest points of the tines 15 are located above the benches 17 of the hearth trolley and that when the prongs 15 are pivoted down but the support arm 11 is raised, the lowest points of the prongs 15 are also above the benches 17 of the bogie 18 are arranged. In these positions, the charging or decharging device can be moved without problems.

Ein Chargiervorgang verläuft wie folgt :A charging process is as follows:

Mit hochgeschwenkten Zinken 15 fährt der Tragarm 11 in abgesenkter Stellung aus dem Ofen 2 über den Rollgang 8, bis sich die Zinken 15 oberhalb eines vorpositionierten Wärmgutes 9 befinden. Dabei sind die Abstände der einzelnen Rollen des Rollganges 9 so bemessen, daß die Zinken zwischen diesen Rollen hindurch verschwenkbar sind. Durch ein Einschwenken der Zinken 15 und ein Anheben des Tragarmes 11 wird das Wärmgut 9 ergriffen und anschließend in den Ofen 2 verfahren. Nach Erreichen der Endposition wird der Tragarm 11 abgesenkt, wobei die Zinken 15 zwischen den keramischen Bänken 17 des Herdwagens 18 in die Nuten 16 eintauchen. Das Wärmgut wird dadurch sanft auf den Bänken 17 abgelegt, wobei eine Fixierung der Lage des Wärmgutes durch eine entsprechend profilierte Oberfläche der keramischen Bänke erreicht werden kann.With the tines 15 swung up, the support arm 11 moves out of the furnace 2 in the lowered position over the roller table 8 until the tines 15 are above a pre-positioned heat good 9. The distances between the individual rollers of the roller table 9 are dimensioned such that the tines can be pivoted between these rollers. By pivoting the tines 15 and lifting the support arm 11, the material to be heated 9 is gripped and then moved into the furnace 2. After reaching the end position, the support arm 11 is lowered, the tines 15 being immersed in the grooves 16 between the ceramic benches 17 of the bogie wagon 18. The material to be heated is thereby deposited gently on the benches 17, the position of the material to be fixed being able to be fixed by a correspondingly profiled surface of the ceramic benches.

Nach einem Ausschwenken der Zinken 15 aus den Nuten 16 bei abgesenktem Tragarm 11 kann die gesamte Chargiermaschine 3 seitlich aus dem Ofen 2 herausfahren, während die Herdwagen 18 um eine Teilung weitertakten. Anschließend beginnt der geschilderte Kreislauf von neuem.After swiveling the tines 15 out of the grooves 16 with the support arm 11 lowered, the entire charging machine 3 can move laterally out of the oven 2 while the bogie wagon 18 continues to clock by one division. Then the cycle begins again.

Wie insbesondere aus Fig. 3 zu sehen ist, werden die neueingeführten Stücke von außen an das schon abgelagerte Wärmgut 9 angelagert. Dadurch, daß dies nicht durch Zangen erfolgt, ist nur ein geringer Abstand zwischen den einzelnen Stücken des Wärmgutes erforderlich.As can be seen in particular from FIG. 3, the newly introduced pieces are attached to the warm material 9 already deposited from the outside. Because this is not done by tongs, only a small distance between the individual pieces of the heating material is required.

Das Dechargieren des Ofens erfolgt umgekehrt in gleicher Weise, wobei bei der Dechargiervorrichtung 4 die Öffnung der Zinken 15 genau umgekehrt zu denen der Chargiereinrichtung 3 ausgerichtet ist, so daß hier von außen die zu entnehmenden Stücke des Wärmgutes 9 abgenommen werden und auch hier kein großer Abstand zwischen den einzelnen Stücken nötig ist.The oven is decharged in the same way, the opening of the tines 15 in the decharging device 4 being oriented in exactly the opposite direction to that of the charging device 3, so that here the pieces of the heat material 9 to be removed are removed from the outside and not a great distance here either between the individual pieces is necessary.

Weiterhin ist in Fig. 3 deutlich zu erkennen, daß der hinter der Dechargiervorrichtung 4 angeordnete Bereich des Ofens 2 eine sehr flach verlaufende Decke aufweist, die nahe an die Oberfläche der keramischen Bänke 17 der Herdwagen 18 herangeführt ist, so daß hier keine Türen mehr erforderlich sind, um eine gute Wärmedichtigkeit des Ofens zu erreichen. Entsprechend ist auch der Bereich des Ofens 2 vor der Chargiervorrichtung 3 ausgebildet.Furthermore, it can be clearly seen in FIG. 3 that the area of the oven 2 arranged behind the decharging device 4 has a very flat ceiling, which is brought close to the surface of the ceramic benches 17 of the bogie wagon 18, so that doors are no longer required here in order to achieve good heat tightness of the furnace. The area of the furnace 2 in front of the charging device 3 is also designed accordingly.

Abweichend von den in Fig. 1 dargestellten Querverschiebebühnen 5 und 7 können auch Hub- und Senkbühnen vorgesehen sein, wobei in dem Fall das Rücklaufgleis 6 unterhalb des Ofens 2 verlaufen würde.In a departure from the transverse sliding platforms 5 and 7 shown in FIG. 1, lifting and lowering platforms can also be provided, in which case the return track 6 would run below the furnace 2.

Weiterhin ist abweichend von dem dargestellten AusfUhrungsbeispiel anstelle des dargestellten Herdwagen-Durchschubofens die Verwendung eines Drehherdofens denkbar, wobei in diesem Fall der Herd des Drehherdofens ringförmig angeordnete Bänke aufweisen muß sowie ringförmig angeordnete Nuten entsprechend den dargestellten Nuten 16, in welche die schwenkbaren Zinken 15 - wie oben beschrieben - eintauchen und ausschwenken können.Furthermore, deviating from the illustrated exemplary embodiment, instead of the bogie push-through oven shown, the use of a rotary hearth furnace is conceivable, in which case the hearth of the rotary hearth furnace must have annularly arranged benches and annularly arranged grooves corresponding to the illustrated grooves 16, into which the pivotable prongs 15 - such as described above - immerse and swing out.

Die zum Drehen des Rohres 12 und zum Schwenken der Zinken 15 aufzuwendenden Kräfte sind verhältnismäßig gering und auch die zum Verfahren und Heben der gesamten Einrichtung aufzuwendenden Kräfte sind so gering, daß sie mühelos von relativ kleinen Motoren aufgewandt werden können. Darüber hinaus ist der Aufbau der eigentlichen Chargier- bzw. Dechargiermaschine außerordentlich einfach und erfordert weiterhin keine aufwendigen Zuführeinrichtungen. Durch die einfachen auszuführenden Bewegungen, die kurzen Wege und dadurch, daß sofort nach dem Hochschwenken der Zinken 15 die eigentliche Chargier- bzw. Dechargiermaschine verfahrbar ist, werden außerordentlich kurze Taktzeiten möglich. Der geringe Hub der gesamten Einrichtung vereinfacht dabei auch die Wärmeabdichtung, so daß in Verbindung mit den heruntergezogen ausgebildeten Ofenenden eine gute Wärmedämmung der Öfen erreicht werden kann.The forces to turn the tube 12 and to pivot the tines 15 are relatively low, and the forces to move and lift the entire device are so low that they can be easily used by relatively small motors. In addition, the construction of the actual charging or decharging machine is extremely simple and furthermore does not require any complex feed devices. The simple movements to be carried out, the short distances and the fact that the actual charging or decharging machine can be moved immediately after the tines 15 have been swiveled up, make extremely short cycle times possible. The small stroke of the entire device also simplifies the heat sealing, so that good heat insulation of the stoves can be achieved in conjunction with the pulled-down furnace ends.

Die Forderungen nach immer größer werdenden Verarbeitungsleistungen und dadurch resultierenden kurzen Taktzeiten sowie nach geringen Wärmeverlusten nach möglichst sanfter Ablage des Wärmgutes auf die keramischen Bänke sowie nach einem einfachen Aufbau und Betrieb werden durch die vorgestellte Einrichtung in kombinierter Weise erfüllt.The requirements for increased processing performance and the resulting short cycle times, as well as low heat losses after the warmest possible placement of the heating material on the ceramic benches and for simple construction and operation are met in a combined manner by the device presented.

Claims (3)

1. Charging and discharging device for heating kilns, in particular hearth-bogie pushed bat kilns and rotaryhearth kilns having a longitudinally moveable supporting arm, hinge-mounted lifting forks, which consist of a tube and prongs being arranged on the supporting arm and grooves matching the prongs being arranged in ceramic partition walls for receiving the articles to be heated, characterized in that the supporting arm (11) is additionally moveable in vertical direction and is of substantially U-shaped design, the tube (12) being mounted rotatably in the free ends of the two U members.
2. Device according to Claim 1, characterized by a track (10) which takes the supporting arm (11) out of and into a kiln (2) perpendicularly to the direction of travel of the hearth bogies (18) or of a rotary hearth.
3. Device according to Claim 1 or 2, characterized by a profiling of the upper side of the partition walls (17), which is adapted to the article to be heated (9) and extends transversely to the direction of travel of the hearth bogies (18) or of the rotary hearth.
EP84106325A 1983-08-10 1984-06-02 Charging and discharging device for furnaces, particularly for tunnel furnaces with trucks and rotary furnaces Expired EP0133877B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84106325T ATE41995T1 (en) 1983-08-10 1984-06-02 CHARGING AND DECHARGING DEVICE FOR HEATING FURNACES, PARTICULARLY CARRIAGE FURNACES AND ROTARY HEART FURNACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3328814A DE3328814A1 (en) 1983-08-10 1983-08-10 CHARGING AND DECHARGING DEVICE FOR HEATER OVENS, ESPECIALLY OVEN WAGON SLIDING OVENS AND TURNOVER OVENS
DE3328814 1983-08-10

Publications (3)

Publication Number Publication Date
EP0133877A2 EP0133877A2 (en) 1985-03-13
EP0133877A3 EP0133877A3 (en) 1987-01-07
EP0133877B1 true EP0133877B1 (en) 1989-04-05

Family

ID=6206198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106325A Expired EP0133877B1 (en) 1983-08-10 1984-06-02 Charging and discharging device for furnaces, particularly for tunnel furnaces with trucks and rotary furnaces

Country Status (7)

Country Link
US (1) US4568278A (en)
EP (1) EP0133877B1 (en)
JP (1) JPS6039116A (en)
AT (1) ATE41995T1 (en)
DE (2) DE3328814A1 (en)
ES (1) ES8505091A1 (en)
ZA (1) ZA844702B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO170250C (en) * 1989-05-16 1992-09-23 Asbjoern Moen INSTALLATION FOR ELECTRIC CONDUCTIVE HEATING OF STEEL OILS
FR2652028B1 (en) * 1989-09-21 1991-10-31 Stein Heurtey DEVICE FOR ENSURING THE RETURN TO 90DEGRE OF STEEL OR RECTANGULAR SECTION STEEL PRODUCTS.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2368615A (en) * 1943-12-03 1945-02-06 Timken Roller Bearing Co Tongs mechanism
US2622861A (en) * 1950-03-08 1952-12-23 Randal E Talley Rotary hearth furnace
US2605006A (en) * 1951-06-05 1952-07-29 Du Pont Apparatus for charging metal ingots into molten metal
DE869974C (en) * 1951-07-20 1953-03-09 Ofu Ofenbau Union G M B H At the same time serving as a loading and unloading device for glow furnaces
DE1920804A1 (en) * 1969-04-24 1970-11-12 Waldrich Gmbh H A Device for automatic roll change on roll grinders or the like.
DE1927618B1 (en) * 1969-05-30 1970-10-08 Ignis Huettenbau Ag Device for pulling blocks and billets of various lengths from industrial furnaces, especially rotary hearth furnaces
DE2113148A1 (en) * 1971-03-18 1972-09-21 Reinhard Haase Single or multi-tong feeding machine for rotary hearth ovens
US4453876A (en) * 1981-05-14 1984-06-12 Arpin Julien J Fireplace log and coal feeder
US4412813A (en) * 1982-02-02 1983-11-01 Alco Standard Corporation Rotary hearth furnace and method of loading and unloading the furnace

Also Published As

Publication number Publication date
EP0133877A2 (en) 1985-03-13
US4568278A (en) 1986-02-04
ES535028A0 (en) 1985-04-16
DE3328814A1 (en) 1985-02-28
ES8505091A1 (en) 1985-04-16
JPS6039116A (en) 1985-02-28
DE3477603D1 (en) 1989-05-11
ATE41995T1 (en) 1989-04-15
ZA844702B (en) 1985-02-27
EP0133877A3 (en) 1987-01-07

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