EP2794933B1 - Tiltable converter - Google Patents
Tiltable converter Download PDFInfo
- Publication number
- EP2794933B1 EP2794933B1 EP12798651.1A EP12798651A EP2794933B1 EP 2794933 B1 EP2794933 B1 EP 2794933B1 EP 12798651 A EP12798651 A EP 12798651A EP 2794933 B1 EP2794933 B1 EP 2794933B1
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- EP
- European Patent Office
- Prior art keywords
- converter
- suspension elements
- support ring
- pendulum suspension
- tiltable
- 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.)
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- 239000000725 suspension Substances 0.000 claims description 83
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4633—Supporting means
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/50—Tilting mechanisms for converters
Definitions
- the invention relates to a tiltable converter with a converter vessel, which is surrounded at a distance from a support ring, wherein the support ring has two opposite support pins for tilting about a tilt axis and wherein a suspension of the converter vessel on the support ring comprises four circumferentially distributed suspension pendulum elements, which in upright Converter transferred vertical forces from the converter vessel to the support ring.
- Converters are used in steelmaking and usually have a charging side and a tapping side. In some cases, for logistical reasons, it will be charged and tapped from the same page. The filling of the converter takes place via the charging side, whereby it is usually tilted by approx. 45 °. For emptying, the converter is tilted towards the tapping side.
- the tilting axis is determined by two support pins diametrically opposed to the support ring. In this case, usually only one support pin is connected to a tilting drive. Sometimes both trunnions are provided with drives.
- the support ring surrounds the converter vessel, which is connected via a suspension with the support ring.
- This suspension transfers the forces from the converter vessel to the support ring.
- the forces to be transmitted are influenced by the filling level and the tilting position of the converter vessel as well as by dynamic loads.
- the design of the suspension must take into account that it occurs due to temperature differences between converter and support ring to considerable deformations of the converter relative to the support ring.
- Another embodiment includes an additional vertical shuttle and thus redundancy. This is to ensure that in case of complete failure of a support element in all Kipp einen a safe power transmission is possible.
- a storage system is simply statically indefinite.
- an oversizing of the support elements should be provided in order to ensure a sufficient load capacity of the remaining links in case of failure.
- WO 2011/069395 A1 discloses a suspension with four vertical pendulum elements, which are arranged symmetrically on the circumference of the converter vessel. This also results in a simple statically indeterminate storage system with coercive forces occurring in the deformation case and high mounting requirements.
- D1 is the closest prior art.
- the invention has for its object to provide an improvement over the prior art for a tiltable converter of the type mentioned.
- the solution provides that the bearing positions of at least two suspension pendulum elements on the converter vessel and / or on the support ring is arranged offset horizontally and / or vertically relative to a rotationally symmetrical arrangement with respect to a longitudinal axis of the converter, so that not all lines of action of the forces transmitted by the suspension pendulum elements have a common point of intersection or in one point approximating each other.
- not all bearing positions of the individual suspension pendulum elements on the converter vessel and / or on the support ring are rotationally symmetrical with respect to the longitudinal axis of the converter.
- each bearing has a pivot about which the respective suspension pendulum element is pivotable.
- the lines of action of the transmitted forces are determined by the two bearing pivots of each suspension pendulum element, when the frictional forces in the bearings are neglected.
- the respective storage position determined in this context, the location of the respective bearing pivot point.
- the present invention provides a displacement of the bearing positions with respect to a rotationally symmetrical arrangement, which goes far beyond manufacturing tolerances.
- known rotationally symmetrical arrangement as a result of unavoidable manufacturing tolerances in reality also deviations, so that the claim of the invention is not satisfied that not all lines of action of the transmitted Forces in a point are approximated to each other.
- the force lines of action point to a common point, even if this point is infinitely far away in the case of parallel force action lines.
- the present invention provides deviations from the rotationally symmetric arrangement of bearing positions to an extent that utilizes the space available. Taking into account the predetermined arrangement of converter vessel and support ring takes place within the space available for the suspension a maximum horizontal and / or vertical displacement of the bearing positions to each other. This avoids as far as possible a common point of intersection of all the force action lines of the suspension pendulum elements.
- Another advantage is that all four suspension pendulum elements have approximately the same maximum load during a tilting operation. This uniform distribution of the maximum loads on all four suspension pendulum elements allows a reduction of the component dimensions over known suspension systems or a longer life of the suspension elements.
- the bearing positions of a first pair of suspension pendulum elements are arranged rotationally symmetrical with respect to a longitudinal axis of the converter and if the bearing positions of a second pair of suspension pendulum elements horizontally and / or vertically offset are also arranged rotationally symmetrical with respect to a longitudinal axis of the converter.
- the bearing positions of a second pair of suspension pendulum elements horizontally and / or vertically offset are also arranged rotationally symmetrical with respect to a longitudinal axis of the converter.
- only two suspension pendulum elements are arranged rotationally symmetrical with respect to a longitudinal axis of the converter. This saves space and facilitates the design of the individual suspension pendulum elements.
- suspension pendulum elements of the first pair and the suspension pendulum elements of the second pair are each designed to be identical.
- the suspension pendulum elements of one pair are longer than the other pendulum elements in order to maximize the distance between the intersections of the lines of action of the forces transmitted by the suspension pendulum element pairs.
- suspension pendulum elements may also be advantageous to design all suspension pendulum elements identical.
- the production, assembly and storage of the suspension pendulum elements is cheaper feasible in this way.
- the interchangeability of a suspension pendulum element is easier in a fault.
- An advantageous embodiment of the invention provides that two suspension pendulum elements on a charging side of the converter and that two suspension pendulum elements on a tapping side of the converter each have rotationally symmetrical bearing positions with respect to a longitudinal axis of the converter.
- the suspension on each side of a vertical median plane through the tilt axis each suspension pendulum elements with similar storage positions.
- Chargierseite the side facing away from the tapping side, even if charged and tapped in special cases from the same side.
- the ratio of the horizontal distance to the vertical distance between the bearing positions of the two suspension pendulum elements on each side of the converter is greater than that of the bearing positions of the two suspension pendulum elements on the other Page.
- the force lines of action of the forces transmitted by the suspension pendulum elements on the charging side then intersect a vertical median plane through the tilting axis at a higher or lower point than the force action lines of the forces transmitted by the pendulum pendulum elements on the racking side.
- the distance between the points of intersection with the median plane acts as Hebelarmin a recordable by this arrangement torque about the tilt axis.
- forces can be transmitted in the direction of the tilt axis. For example, dynamic forces in the direction of the tilt axis are balanced by forces in the suspension pendulum elements.
- a simple construction of such an arrangement provides that the lines of action of the forces transmitted by the suspension pendulum elements on the tapping side have a common first intersection with the longitudinal axis of the converter and that the lines of action of the forces on the charging side transmitted by the suspension pendulum elements have a common second intersection with the Have longitudinal axis of the converter.
- the storage positions each in an angular range of 40 ° to 50 ° relative to the tilt axis are arranged. Such an arrangement causes a uniform force transmission from the converter vessel to the support ring.
- the suspension When viewing the upright converter, it is advantageous to arrange two horizontal pendulum elements between converter vessel and support ring for transmitting horizontal forces.
- the suspension then includes six pendulum elements.
- the links referred to as horizontal pendulum elements, transmit forces from the converter vessel to the support ring when the converter is tilted.
- horizontal pendulum elements transmit forces from the converter vessel to the support ring when the converter is tilted.
- the greatest forces are transmitted by means of horizontal pendulum elements and smaller forces by means of the suspension pendulum elements in a 90 ° tilted position. It is advantageous to perform these two horizontal pendulum elements identical to the suspension pendulum elements.
- the converter 1 comprises a vessel 2 which is suspended at a distance in a support ring 3 by means of a plurality of support elements 6, 7, 8, 9, 10, 11.
- Four of these support elements are designed as suspension pendulum elements 6, 7, 8, 9 and serve to transfer the forces from the converter vessel 2 to the support ring 3 with upright converter 1.
- the suspension pendulum elements 6, 7, 8, 9 take also horizontal due to an oblique orientation Forces, which cancel each other out. Neglecting dynamic forces, those of the Suspension pendulum elements 6, 7, 8, 9 transmitted forces with the weight F G of the converter vessel 2 and its contents in a balance of forces.
- Kippaber is the converter 1 by means of two arranged on the support ring 3 trunnions 4, 5, which are rotatably mounted in supports, not shown, and define the tilting axis a. As a rule, only one of these trunnions 4 is connected to a corresponding tilting drive.
- a plane which is spanned by the tilt axis a and a longitudinal axis b of the converter 1, divides the converter 1 into two sides, which are defined as charging side C (charging side) and as tapping side T (tapping side).
- charging side C charging side
- tapping side T tapping side
- At least two suspension pendulum elements 6, 7, 8, 9 with offset bearing positions 62, 63, 72, 73, 82, 83 and 92, 93 are provided.
- not all suspension pendulum elements 6, 7, 8, 9 are arranged rotationally symmetrically with respect to the longitudinal axis b.
- each of these bearings thus has a pivot point about which the respective pendulum rod 6, 7, 8, 9 is pivotable in all directions.
- the respective pivot point defines the respective storage position 62, 63, 72, 73, 82, 83 92, 93 within the arrangement.
- each suspension pendulum element 6, 7 and 8, 9 arranged rotationally symmetrical with respect to a longitudinal axis b of the converter.
- a longitudinal axis b the axis of symmetry of the converter vessel 2 and the axis of symmetry of the support ring 3 is to be considered, these axes of symmetry may differ slightly from each other.
- Each of these suspension pendulum element pairs (6, 7 or 8, 9) thus has a respective common point of intersection S1 or S2. It is essential that a sufficient distance between these intersections S1 and S2, to ensure favorable force conditions and sizes.
- the bearing positions 62, 63, 72, 73, 82, 83, 92, 93 is provided in relation to a rotationally symmetrical arrangement within the available space.
- the suspension pendulum elements 6, 7 on the tapping side T have a greater inclination than the suspension pendulum elements 8, 9 on the charging side C.
- the ratio of the horizontal distance to the vertical distance of the respectively arranged on the converter vessel 2 and the support ring 3 bearing positions 62, 63, 72, 73, 82, 83, 92, 93 is then greater on the tapping side T than on the charging side C.
- the distance between the two points of intersection S1, S2 acts as a lever arm of a bearing moment which counteracts a torque and forces transmitted by the converter vessel 2 to the support ring 3 in the direction of the tilting axis a.
- a bearing moment arises in an upright converter position, for example, by dynamic movement forces F d of Converter contents.
- this bearing moment also counteracts a moment which forms the weight force F G with a distance x to the intersection of the tilting axis a with the longitudinal axis b.
- the arrangement of the suspension pendulum elements 6, 7, 8, 9 on the circumference of the support ring 3 is in Fig. 3 seen.
- the horizontal pendulum elements 10, 11 are not shown here.
- the respective angle ⁇ 6, ⁇ 7, ⁇ 8, ⁇ 9 between a central axis of the respective suspension pendulum element 6, 7, 8, 9 and the tilting axis a is approximately 45 °.
- a range between 40 ° and 50 ° makes sense.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
Die Erfindung betrifft einen kippbaren Konverter mit einem Konvertergefäß, welches im Abstand von einem Tragring umgeben ist, wobei der Tragring zwei gegenüberliegende Tragzapfen zum Kippen um eine Kippachse aufweist und wobei eine Aufhängung des Konvertergefäßes am Tragring vier am Umfang verteilte Aufhängungspendelelemente umfasst, welche bei aufrecht stehendem Konverter vertikale Kräfte vom Konvertergefäß auf den Tragring übertragen.The invention relates to a tiltable converter with a converter vessel, which is surrounded at a distance from a support ring, wherein the support ring has two opposite support pins for tilting about a tilt axis and wherein a suspension of the converter vessel on the support ring comprises four circumferentially distributed suspension pendulum elements, which in upright Converter transferred vertical forces from the converter vessel to the support ring.
Konverter kommen bei der Stahlerzeugung zum Einsatz und weisen in der Regel eine Chargierseite und eine Abstichseite auf. In manchen Fällen wird aus logistischen Gründen von derselben Seite chargiert und abgestochen. Über die Chargierseite erfolgt die Befüllung des Konverters, wobei dieser meist um ca. 45° geneigt wird. Zur Entleerung wird der Konverter zur Abstichseite hin gekippt. Die Kippachse ist durch zwei am Tragring diametral gegenüberliegende Tragzapfen bestimmt. Dabei ist in der Regel nur ein Tragzapfen mit einem Kippantrieb verbunden. Manchmal sind auch beide Tragzapfen mit Antrieben versehen.Converters are used in steelmaking and usually have a charging side and a tapping side. In some cases, for logistical reasons, it will be charged and tapped from the same page. The filling of the converter takes place via the charging side, whereby it is usually tilted by approx. 45 °. For emptying, the converter is tilted towards the tapping side. The tilting axis is determined by two support pins diametrically opposed to the support ring. In this case, usually only one support pin is connected to a tilting drive. Sometimes both trunnions are provided with drives.
Der Tragring umgibt das Konvertergefäß, welches über eine Aufhängung mit dem Tragring verbunden ist. Diese Aufhängung überträgt die Kräfte vom Konvertergefäß auf den Tragring. Beeinflusst werden die zu übertragenden Kräfte durch den Füllstand und die Kippstellung des Konvertergefäßes sowie durch dynamische Belastungen. Die Gestaltung der Aufhängung muss berücksichtigen, dass es infolge auftretender Temperaturunterschiede zwischen Konverter und Tragring zu beträchtlichen Verformungen des Konverters relativ zum Tragring kommt.The support ring surrounds the converter vessel, which is connected via a suspension with the support ring. This suspension transfers the forces from the converter vessel to the support ring. The forces to be transmitted are influenced by the filling level and the tilting position of the converter vessel as well as by dynamic loads. The design of the suspension must take into account that it occurs due to temperature differences between converter and support ring to considerable deformations of the converter relative to the support ring.
Bekannt ist aus der
Eine andere Ausführungsform beinhaltet ein zusätzliches vertikales Pendelelement und somit eine Redundanz. Damit soll erreicht werden, dass bei vollkommenem Versagen eines Auflageelements weiterhin in allen Kippstellungen eine sichere Kraftübertragung möglich ist. Ein solches Lagerungssystem ist jedoch einfach statisch unbestimmt. Außerdem ist eine Überdimensionierung der Auflageelemente vorzusehen, um im Versagensfall eine ausreichende Belastbarkeit der verbleibenden Links sicherzustellen.Another embodiment includes an additional vertical shuttle and thus redundancy. This is to ensure that in case of complete failure of a support element in all Kippstellungen a safe power transmission is possible. However, such a storage system is simply statically indefinite. In addition, an oversizing of the support elements should be provided in order to ensure a sufficient load capacity of the remaining links in case of failure.
Auch die
Der Erfindung liegt die Aufgabe zugrunde, für einen kippbaren Konverter der eingangs genannten Art eine Verbesserung gegenüber dem Stand der Technik anzugeben.The invention has for its object to provide an improvement over the prior art for a tiltable converter of the type mentioned.
Erfindungsgemäß wird diese Aufgabe gelöst durch einen Konverter gemäß Anspruch 1. Ausgestaltungen der Erfindung sind in abhängigen Ansprüchen angegeben.According to the invention, this object is achieved by a converter according to
Die Lösung sieht vor, dass die Lagerpositionen zumindest zweier Aufhängungspendelelemente am Konvertergefäß und/oder am Tragring horizontal und/oder vertikal versetzt angeordnet ist gegenüber einer rotationssymmetrischen Anordnung bezüglich einer Längachse des Konverters, sodass nicht alle Wirkungslinien der von den Aufhängungspendelelementen übertragenen Kräfte einen gemeinsamen Schnittpunkt aufweisen oder in einem Punkt einander angenähert sind. Es sind also nicht alle Lagerpositionen der einzelnen Aufhängungspendelelemente am Konvertergefäß und/oder am Tragring bezüglich der Längachse des Konverters rotationssymmetrisch angeordnet. Bei aufrecht stehendem Konverter werden mittels der Aufhängungspendelelemente sowohl vertikale als auch horizontale Kräfte vom Konvertergefäß auf den Tragring übertragen, wobei sich die horizontalen Kräfte gegenseitig aufheben. Konkret gehen die Kräfte in den Aufhängungspendelelementen in Richtung der Wirklinien durch die Lager des jeweiligen Elements. Die Aufhängung des Konvertergefäßes im Tragring erfolgt sowohl am Gefäß wie auch am Tragring mittels sphärischer Lager. Damit weist jedes Lager einen Drehpunkt auf, um den das jeweilige Aufhängungspendelelement schwenkbar ist. Die Wirkungslinien der übertragenen Kräfte sind durch die beiden Lagerdrehpunkte des jeweiligen Aufhängungspendelelements festgelegt, wenn die Reibungskräfte in den Lagern vernachlässigt werden. Die jeweilige Lagerposition bestimmt in diesem Zusammenhang die Lage des jeweiligen Lagerdrehpunktes.The solution provides that the bearing positions of at least two suspension pendulum elements on the converter vessel and / or on the support ring is arranged offset horizontally and / or vertically relative to a rotationally symmetrical arrangement with respect to a longitudinal axis of the converter, so that not all lines of action of the forces transmitted by the suspension pendulum elements have a common point of intersection or in one point approximating each other. Thus, not all bearing positions of the individual suspension pendulum elements on the converter vessel and / or on the support ring are rotationally symmetrical with respect to the longitudinal axis of the converter. When the converter is upright, both vertical and horizontal forces are transferred from the converter vessel to the support ring by means of the suspension pendulum elements, the horizontal forces canceling each other. Specifically, the forces in the suspension pendulum elements in the direction of the action lines go through the bearings of the respective element. The suspension of the converter vessel in the support ring takes place both on the vessel and on the support ring by means of spherical bearings. Thus, each bearing has a pivot about which the respective suspension pendulum element is pivotable. The lines of action of the transmitted forces are determined by the two bearing pivots of each suspension pendulum element, when the frictional forces in the bearings are neglected. The respective storage position determined in this context, the location of the respective bearing pivot point.
In Abgrenzung zum Stand der Technik sieht die vorliegende Erfindung eine Versetzung der Lagerpositionen bezüglich einer rotationssymmetrischen Anordnung vor, welche weit über Fertigungstoleranzen hinausgeht. Obwohl bekannte rotationssymmetrische Anordnung infolge unvermeidbarer Fertigungstoleranzen in der Realität ebenfalls Abweichungen aufweisen, ist damit nicht die erfindungsgemäße Forderung erfüllt, dass nicht alle Wirkungslinien der übertragenen Kräfte in einem Punkt einander angenähert sind. Denn sobald eine rotationssymmetrische Anordnung vorgesehen ist, weisen die Kraftwirkungslinien auf einen gemeinsamen Punkt, selbst wenn dieser im Falle von parallelen Kraftwirkungslinien unendlich weit entfernt ist.In contrast to the prior art, the present invention provides a displacement of the bearing positions with respect to a rotationally symmetrical arrangement, which goes far beyond manufacturing tolerances. Although known rotationally symmetrical arrangement as a result of unavoidable manufacturing tolerances in reality also deviations, so that the claim of the invention is not satisfied that not all lines of action of the transmitted Forces in a point are approximated to each other. For as soon as a rotationally symmetrical arrangement is provided, the force lines of action point to a common point, even if this point is infinitely far away in the case of parallel force action lines.
Die vorliegende Erfindung sieht Abweichungen von der rotationssymmetrischen Anordnung der Lagerpositionen in einem Ausmaß vor, das die gegebenen Platzverhältnisse ausnutzt. Unter Berücksichtigung der vorgegebenen Anordnung von Konvertergefäß und Tragring erfolgt innerhalb des für die Aufhängung vorhandenen Bauraums eine größtmögliche horizontale und/oder vertikale Versetzung der Lagerpositionen zueinander. Damit wird ein gemeinsamer Schnittpunkt aller Kraftwirkungslinien der Aufhängungspendelelemente so weit wie möglich vermieden.The present invention provides deviations from the rotationally symmetric arrangement of bearing positions to an extent that utilizes the space available. Taking into account the predetermined arrangement of converter vessel and support ring takes place within the space available for the suspension a maximum horizontal and / or vertical displacement of the bearing positions to each other. This avoids as far as possible a common point of intersection of all the force action lines of the suspension pendulum elements.
Erreicht wird mit der erfindungsgemäßen Kennzeichnung ein statisch bestimmtes Lagerungssystem mit vier Aufhängungspendelelementen. Damit ist zunächst der Vorteil verbunden, dass das System bei drei montierten Aufhängungspendelelementen einen Freiheitsgrad behält, der eine einfache Montage des vierten Aufhängungspendelelements erlaubt.Is achieved with the inventive marking a statically determined storage system with four suspension pendulum elements. This initially has the advantage that the system retains a degree of freedom in three mounted suspension pendulum elements, which allows easy mounting of the fourth suspension pendulum element.
Ein weiterer Vorteil besteht darin, dass alle vier Aufhängungspendelelemente während eines Kippvorgangs eine annähernd gleiche maximale Belastung aufweisen. Diese gleichmäßige Verteilung der maximalen Belastungen auf alle vier Aufhängungspendelelemente erlaubt eine Reduktion der Bauteilabmessungen gegenüber bekannten Aufhängungssystemen bzw. eine länger Lebensdauer der Aufhängungselemente.Another advantage is that all four suspension pendulum elements have approximately the same maximum load during a tilting operation. This uniform distribution of the maximum loads on all four suspension pendulum elements allows a reduction of the component dimensions over known suspension systems or a longer life of the suspension elements.
Zudem treten infolge thermischer Verformungen keine unbeherrschbaren Zwangskräfte auf, welche zu einer Überlastung einzelner Aufhängungselemente führten könnten. Von Vorteil ist es, wenn die Lagerpositionen eines ersten Paares der Aufhängungspendelelemente rotationssymmetrisch bezüglich einer Längachse des Konverters angeordnet sind und wenn die Lagerpositionen eines zweiten Paares der Aufhängungspendelelemente horizontal und/oder vertikal versetzt ebenfalls rotationssymmetrisch bezüglich einer Längachse des Konverters angeordnet sind. Somit sind jeweils nur zwei Aufhängungspendelelemente rotationssymmetrisch bezüglich einer Längachse des Konverters angeordnet. Das spart Platz und erleichtert die Auslegung der einzelnen Aufhängungspendelelemente.In addition, due to thermal deformation no uncontrollable constraining forces occur, which could lead to an overload of individual suspension elements. It is advantageous if the bearing positions of a first pair of suspension pendulum elements are arranged rotationally symmetrical with respect to a longitudinal axis of the converter and if the bearing positions of a second pair of suspension pendulum elements horizontally and / or vertically offset are also arranged rotationally symmetrical with respect to a longitudinal axis of the converter. Thus, in each case only two suspension pendulum elements are arranged rotationally symmetrical with respect to a longitudinal axis of the converter. This saves space and facilitates the design of the individual suspension pendulum elements.
Dabei ist es günstig, wenn die Aufhängungspendelelemente des ersten Paares und die Aufhängungspendelelemente des zweiten Paares jeweils baugleich ausgeführt sind. Beispielsweise sind die Aufhängungspendelelemente eines Paares länger als die anderen Pendelelemente, um den Abstand zwischen den Schnittpunkten der Wirkungslinien der von den Aufhängungspendelelementpaaren übertragenen Kräfte zu maximieren.It is advantageous if the suspension pendulum elements of the first pair and the suspension pendulum elements of the second pair are each designed to be identical. For example, the suspension pendulum elements of one pair are longer than the other pendulum elements in order to maximize the distance between the intersections of the lines of action of the forces transmitted by the suspension pendulum element pairs.
Es kann jedoch auch vorteilhaft sein, alle Aufhängungspendelelemente baugleich auszuführen. Die Fertigung, Montage und Lagerhaltung der Aufhängungspendelelemente ist auf diese Weise günstiger durchführbar. Ebenso ist in einem Störungsfall die Austauschbarkeit eines Aufhängungspendelelements einfacher.However, it may also be advantageous to design all suspension pendulum elements identical. The production, assembly and storage of the suspension pendulum elements is cheaper feasible in this way. Likewise, the interchangeability of a suspension pendulum element is easier in a fault.
Eine vorteilhafte Ausprägung der Erfindung sieht vor, dass zwei Aufhängungspendelelemente auf einer Chargierseite des Konverters und dass zwei Aufhängungspendelelemente auf einer Abstichseite des Konverters jeweils bezüglich einer Längsachse des Konverters rotationssymmetrische Lagerpositionen aufweisen. Somit weist die Aufhängung beidseits einer senkrechten Mittelebene durch die Kippachse jeweils Aufhängungspendelelemente mit gleichartigen Lagerpositionen auf. Im Zusammenhang mit der vorliegenden Erfindung wird als Chargierseite die von der Abstichseite abgewandte Seite bezeichnet, auch wenn in Sonderfällen von der gleichen Seite chargiert und abgestochen wird.An advantageous embodiment of the invention provides that two suspension pendulum elements on a charging side of the converter and that two suspension pendulum elements on a tapping side of the converter each have rotationally symmetrical bearing positions with respect to a longitudinal axis of the converter. Thus, the suspension on each side of a vertical median plane through the tilt axis each suspension pendulum elements with similar storage positions. In connection with the present Invention is called Chargierseite the side facing away from the tapping side, even if charged and tapped in special cases from the same side.
Dabei ist es günstig, wenn bei Betrachtung des aufrecht stehenden Konverters das Verhältnis des horizontalen Abstands zum vertikalen Abstand der jeweils am Konvertergefäß und am Tragring befindlichen Lagerpositionen der beiden Aufhängungspendelelemente auf einer Seite des Konverters größer ist gegenüber dem Verhältnis der Lagerpositionen der beiden Aufhängungspendelelemente auf der anderen Seite. Die Kraftwirkungslinien der von den Aufhängungspendelelementen auf der Chargierseite übertragenen Kräfte schneiden dann eine senkrechte Mittelebene durch die Kippachse an einer höheren oder niedrigeren Stelle als die Kraftwirkungslinien der von den Aufhängungspendelelementen auf der Abstichseite übertragenen Kräfte. Der Abstand zwischen den Schnittpunkten mit der Mittelebene wirkt dabei als Hebelarmlänge eines von dieser Anordnung aufnehmbaren Moments um die Kippachse. Zudem können Kräfte in Richtung der Kippachse übertragen werden. Zum Beispiel werden dynamische Kräfte in Richtung der Kippachse durch Kräfte in den Aufhängungspendelelementen ins Gleichgewicht gebracht.In this case, it is favorable if, when the upright converter is considered, the ratio of the horizontal distance to the vertical distance between the bearing positions of the two suspension pendulum elements on each side of the converter is greater than that of the bearing positions of the two suspension pendulum elements on the other Page. The force lines of action of the forces transmitted by the suspension pendulum elements on the charging side then intersect a vertical median plane through the tilting axis at a higher or lower point than the force action lines of the forces transmitted by the pendulum pendulum elements on the racking side. The distance between the points of intersection with the median plane acts as Hebelarmlänge a recordable by this arrangement torque about the tilt axis. In addition, forces can be transmitted in the direction of the tilt axis. For example, dynamic forces in the direction of the tilt axis are balanced by forces in the suspension pendulum elements.
Ein einfacher Aufbau einer solchen Anordnung sieht vor, dass die Wirkungslinien der von den Aufhängungspendelelementen übertragenen Kräften auf der Abstichseite einen gemeinsamen ersten Schnittpunkt mit der Längsachse des Konverters aufweisen und dass die Wirkungslinien der von den Aufhängungspendelelementen übertragenen Kräften auf der Chargierseite einen gemeinsamen zweiten Schnittpunkt mit der Längsachse des Konverters aufweisen.A simple construction of such an arrangement provides that the lines of action of the forces transmitted by the suspension pendulum elements on the tapping side have a common first intersection with the longitudinal axis of the converter and that the lines of action of the forces on the charging side transmitted by the suspension pendulum elements have a common second intersection with the Have longitudinal axis of the converter.
Für die Aufteilung der Aufhängungspendelelemente in der Grundrissbetrachtung des aufrecht stehenden Konverters ist es günstig, wenn die Lagerpositionen jeweils in einem Winkelbereich von 40° bis 50° bezogen auf die Kippachse angeordnet sind. Eine solche Anordnung bewirkt eine gleichmäßige Kräfteübertragung vom Konvertergefäß auf den Tragring.For the distribution of the suspension pendulum elements in the plan view of the upright converter, it is advantageous if the storage positions each in an angular range of 40 ° to 50 ° relative to the tilt axis are arranged. Such an arrangement causes a uniform force transmission from the converter vessel to the support ring.
Bei Betrachtung des aufrecht stehenden Konverters ist es von Vorteil, zur Übertragung horizontaler Kräfte zwei horizontale Pendelelemente zwischen Konvertergefäß und Tragring anzuordnen. Insgesamt umfasst die Aufhängung dann sechs Pendelelemente. Die als horizontale Pendelelemente bezeichneten Links übertragen Kräfte vom Konvertergefäß auf den Tragring bei gekipptem Konverter. Je nach Lage des Schwerpunkts werden bei einer 90° Kippstellung die größten Kräfte mittels horizontaler Pendelelemente und kleinere Kräfte mittels der Aufhängungspendelelemente übertragen. Dabei ist es günstig, auch diese beiden horizontalen Pendelelemente baugleich mit den Aufhängungspendelelementen auszuführen.When viewing the upright converter, it is advantageous to arrange two horizontal pendulum elements between converter vessel and support ring for transmitting horizontal forces. Overall, the suspension then includes six pendulum elements. The links, referred to as horizontal pendulum elements, transmit forces from the converter vessel to the support ring when the converter is tilted. Depending on the position of the center of gravity, the greatest forces are transmitted by means of horizontal pendulum elements and smaller forces by means of the suspension pendulum elements in a 90 ° tilted position. It is advantageous to perform these two horizontal pendulum elements identical to the suspension pendulum elements.
Die Erfindung wird nachfolgend in beispielhafter Weise unter Bezugnahme auf die beigefügten Figuren erläutert. Es zeigen in schematischer Darstellung:
- Fig. 1
- Konverter im Seitenriss
- Fig. 2
- Konverter im Aufriss
- Fig. 3
- Konverter im Grundriss
- Fig. 1
- Converter in side view
- Fig. 2
- Converter in the outline
- Fig. 3
- Converter in the floor plan
Der Konverter 1 umfasst ein Gefäß 2, das beabstandet in einem Tragring 3 mittels mehrerer Tragelemente 6, 7, 8, 9, 10, 11 aufgehängt ist. Vier dieser Tragelemente sind als Aufhängungspendelelemente 6, 7, 8, 9 ausgeführt und dienen zur Übertragung der Kräfte vom Konvertergefäß 2 auf den Tragring 3 bei aufrecht stehendem Konverter 1. Dabei nehmen die Aufhängungspendelelemente 6, 7, 8, 9 aufgrund einer schrägen Ausrichtung auch horizontale Kräfte auf, welche sich jedoch gegenseitig aufheben. Unter Vernachlässigung dynamischer Kräfte sind die von den Aufhängungspendelelementen 6, 7, 8, 9 übertragenen Kräfte mit der Gewichtskraft FG des Konvertergefäßes 2 und dessen Inhalts in einem Kräftegleichgewicht.The
Zwei horizontale Pendelelemente 10, 11 dienen der Kräfteübertragung in Kippstellungen des Konverters 1. Kippaber ist der Konverter 1 mittels zweier am Tragring 3 angeordneter Tragzapfen 4, 5, welche in nicht dargestellten Auflagern drehbar gelagert sind und die Kippachse a festlegen. In der Regel ist nur einer dieser Tragzapfen 4 mit einem entsprechenden Kippantrieb verbunden.Kippaber is the
Eine Ebene, welche durch die Kippachse a und einer Längachse b des Konverters 1 aufgespannt ist, teilt den Konverter 1 in zwei Seiten, welche als Chargierseite C (Charging Side) und als Abstichseite T (Tapping Side) definiert sind. Auf jeder Seite ist ein Paar Aufhängungspendelelemente 6, 7 bzw. 8, 9 angeordnet.A plane, which is spanned by the tilt axis a and a longitudinal axis b of the
Erfindungsgemäß ist zumindest zwei Aufhängungspendelelemente 6, 7, 8, 9 mit versetzten Lagerpositionen 62, 63, 72, 73, 82, 83 bzw. 92, 93 vorgesehen. Somit sind nicht alle Aufhängungspendelelemente 6, 7, 8, 9 bezüglich der Längachse b rotationssymmetrisch angeordnet.According to the invention at least two
Zur Vermeidung von Zwangskräften sind die Pendelstäbe 6, 7, 8, 9, mittels sphärischer Lager an das Konvertergefäß 2 und an den Tragring 3 angeschlossen. Jede dieser Lagerungen weist somit einen Drehpunkt auf, um den der jeweilige Pendelstab 6, 7, 8, 9 in alle Richtungen schwenkbar ist. Der jeweilige Drehpunkt definiert dabei die jeweilige Lagerposition 62, 63, 72, 73, 82, 83 92, 93 innerhalb der Anordnung.To avoid forced forces the
Die von einem Aufhängungspendelelement 6, 7, 8, 9 übertragene Kraft wirkt entlang einer Wirkungslinie, welche durch die beiden Drehpunkte der Lagerungen dieses Penelementes 6, 7, 8, 9 geht. Somit bewirkt eine versetzte Lagerposition 62, 63, 72, 73, 82, 83, 92, 93, dass nicht alle Wirkungslinien der von den Aufhängungspendelelementen 6, 7, 8, 9 übertragenen Kräfte einen gemeinsamen Schnittpunkt aufweisen, wie dies bei einer rotationssymmetrischen Anordnung der Fall wäre.The force transmitted by a
Im vorliegenden Beispiel, welches in den
Erfüllt wird diese Anforderung, indem innerhalb der zur Verfügung stehenden Platzverhältnisse eine größtmögliche Versetzung der Lagerpositionen 62, 63, 72, 73, 82, 83, 92, 93 gegenüber einer rotationssymmetrischen Anordnung vorgesehen ist. So weisen beispielsweise die Aufhängungspendelelemente 6, 7 auf der Abstichseite T eine stärkere Neigung als die Aufhängungspendelelemente 8, 9 auf der Chargierseite C auf. Das Verhältnis des horizontalen Abstands zum vertikalen Abstand der jeweils am Konvertergefäß 2 und am Tragring 3 angeordneten Lagerpositionen 62, 63, 72, 73, 82, 83, 92, 93 ist dann auf der Abstichseite T größer als auf der Chargierseite C.This requirement is met by the greatest possible displacement of the bearing positions 62, 63, 72, 73, 82, 83, 92, 93 is provided in relation to a rotationally symmetrical arrangement within the available space. For example, the
Der Abstand zwischen den beiden Schnittpunkten S1, S2 wirkt als Hebelarm eines Lagerungsmoments, das einem vom Konvertergefäß 2 auf den Tragring 3 übertragenen Moment und Kräften in Richtung der Kippachse a entgegenwirkt. Ein solches Moment entsteht in einer aufrechten Konverterstellung beispielsweise durch dynamische Bewegungskräfte Fd des Konverterinhalts. Dieses Lagerungsmoment wirkt jedoch auch einem Moment entgegen, das die Gewichtskraft FG mit einem Abstand x zum Schnittpunkt der Kippachse a mit der Längsachse b bildet.The distance between the two points of intersection S1, S2 acts as a lever arm of a bearing moment which counteracts a torque and forces transmitted by the
Die Anordnung der Aufhängungspendelelemente 6, 7, 8, 9 am Umfang des Tragrings 3 ist in
Claims (9)
- Tiltable converter (1) with a converter vessel (2) surrounded by a support ring (3) spaced away therefrom, wherein the support ring (3) has two opposing support pins (4, 5) for tilting about a tilting axis (a) and wherein a suspension of the converter vessel (2) on the support ring (3) comprises four pendulum suspension elements (6, 7, 8, 9) distributed on the circumference, which transmit vertical forces from the converter vessel (2) onto the support ring (3) when the converter is upright (1), characterised in that the mounting positions (62, 63, 72, 73, 82, 83, 92, 93) of at least two pendulum suspension elements (6, 7, 8, 9) on the converter vessel (2) and/or on the support ring (3) are arranged horizontally and/or vertically offset from a rotationally symmetrical arrangement relative to a longitudinal axis (b) of the converter (1), so that not all lines of action of the forces transmitted by the pendulum suspension elements (6, 7, 8, 9) have a common point of intersection or approach one another in a point or run in parallel.
- Tiltable converter (1) according to claim 1, characterised in that the mounting positions (62, 63, 72, 73) of a first pair of the pendulum suspension elements (6, 7) are arranged rotationally symmetrically relative to a longitudinal axis (b) of the converter (1) and that the mounting positions (82, 83, 92, 93) of a second pair of the pendulum suspension elements (8, 9) are arranged offset horizontally and/or vertically also rotationally symmetrically relative to a longitudinal axis (b) of the converter (1).
- Tiltable converter according to claim 2, characterised in that the pendulum suspension elements (6, 7) of the first pair and the pendulum suspension elements (8, 9) of the second pair are identical in construction.
- Tiltable converter according to claim 1 or 2, characterised in that all the pendulum suspension elements (6, 7, 8, 9) are identical in construction.
- Tiltable converter according to one of claims 1 to 4, characterised in that two pendulum suspension elements (8, 9) on a charging side (C) of the converter (1) and that two pendulum suspension elements (6, 7) on a tapping side (T) of the converter (1) each have rotationally symmetrical mounting positions (62, 63, 72, 73, 82, 83, 92, 93) relative to a longitudinal axis (b) of the converter (1).
- Tiltable converter (1) according to claim 5, characterised in that, when viewing the upright converter (1), the ratio of the horizontal distance to the vertical distance of the mounting positions (62, 63, 72, 73 or 82, 83, 92, 93) of the two pendulum suspension elements (6, 7 or 8, 9) located in each case on the converter vessel (2) and on the support ring (3) on one side (T or C) of the converter is greater than the ratio of the mounting positions (82, 83, 92, 93 or 62, 63, 72, 73) on the other side (C or T).
- Tiltable converter (1) according to claim 6, characterised in that the lines of action of the forces transmitted by the pendulum suspension elements (6, 7) have a common first point of intersection (S1) with the longitudinal axis (b) of the converter (1) on the tapping side (T) and that the lines of action of the forces transmitted by the pendulum suspension elements (8, 9) have a common second point of intersection (S2) with the longitudinal axis (b) of the converter (1) on the charging side (C).
- Tiltable converter (1) according to one of claims 1 to 7, characterised in that in plan view of the upright converter (1), the mounting positions (62, 63, 72, 73, 82, 83, 92, 93) of the pendulum suspension elements (6, 7, 8, 9) lie within an angular range of 40° to 50° relative to the tilting axis (a).
- Tiltable converter (1) according to one of claims 1 to 8, characterised in that, when viewing the upright converter (1), two horizontal pendulum elements (10, 11) are arranged between converter vessel (2) and the support ring (3) in order to transmit horizontal forces.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12798651.1A EP2794933B1 (en) | 2011-12-19 | 2012-11-23 | Tiltable converter |
PL12798651T PL2794933T3 (en) | 2011-12-19 | 2012-11-23 | Tiltable converter |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11194201.7A EP2607501A1 (en) | 2011-12-19 | 2011-12-19 | Tiltable converter |
PCT/EP2012/073421 WO2013092108A1 (en) | 2011-12-19 | 2012-11-23 | Tiltable converter |
EP12798651.1A EP2794933B1 (en) | 2011-12-19 | 2012-11-23 | Tiltable converter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2794933A1 EP2794933A1 (en) | 2014-10-29 |
EP2794933B1 true EP2794933B1 (en) | 2016-02-03 |
Family
ID=47326087
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11194201.7A Withdrawn EP2607501A1 (en) | 2011-12-19 | 2011-12-19 | Tiltable converter |
EP12798651.1A Active EP2794933B1 (en) | 2011-12-19 | 2012-11-23 | Tiltable converter |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11194201.7A Withdrawn EP2607501A1 (en) | 2011-12-19 | 2011-12-19 | Tiltable converter |
Country Status (6)
Country | Link |
---|---|
EP (2) | EP2607501A1 (en) |
KR (1) | KR20140107554A (en) |
CN (1) | CN103998628B (en) |
PL (1) | PL2794933T3 (en) |
RU (1) | RU2014129911A (en) |
WO (1) | WO2013092108A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3502282A1 (en) | 2017-12-20 | 2019-06-26 | Primetals Technologies Austria GmbH | Tiltable metallurgical vessel and method for fixing and releasing tiltable metallurgical vessel |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9211926U1 (en) * | 1992-09-04 | 1992-12-17 | Voest-Alpine Industrieanlagenbau Ges.m.b.H., Linz | Tilting converter |
AT504664B1 (en) * | 2007-02-02 | 2008-07-15 | Siemens Vai Metals Tech Gmbh | TILT CONVERTER |
CN201165531Y (en) * | 2007-12-28 | 2008-12-17 | 中冶集团北京冶金设备研究设计总院 | Converter body supporting device |
CN101717838A (en) | 2009-12-11 | 2010-06-02 | 中冶赛迪工程技术股份有限公司 | Device for connecting furnace shell and supporting ring of revolving furnace with four-point linkage mechanism |
-
2011
- 2011-12-19 EP EP11194201.7A patent/EP2607501A1/en not_active Withdrawn
-
2012
- 2012-11-23 RU RU2014129911A patent/RU2014129911A/en not_active Application Discontinuation
- 2012-11-23 EP EP12798651.1A patent/EP2794933B1/en active Active
- 2012-11-23 PL PL12798651T patent/PL2794933T3/en unknown
- 2012-11-23 CN CN201280062850.3A patent/CN103998628B/en active Active
- 2012-11-23 KR KR1020147020403A patent/KR20140107554A/en not_active Application Discontinuation
- 2012-11-23 WO PCT/EP2012/073421 patent/WO2013092108A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2013092108A1 (en) | 2013-06-27 |
RU2014129911A (en) | 2016-02-10 |
PL2794933T3 (en) | 2016-07-29 |
KR20140107554A (en) | 2014-09-04 |
EP2607501A1 (en) | 2013-06-26 |
CN103998628A (en) | 2014-08-20 |
EP2794933A1 (en) | 2014-10-29 |
CN103998628B (en) | 2016-02-10 |
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