EP2291596A1 - Portique rotatif pour un four - Google Patents

Portique rotatif pour un four

Info

Publication number
EP2291596A1
EP2291596A1 EP09765606A EP09765606A EP2291596A1 EP 2291596 A1 EP2291596 A1 EP 2291596A1 EP 09765606 A EP09765606 A EP 09765606A EP 09765606 A EP09765606 A EP 09765606A EP 2291596 A1 EP2291596 A1 EP 2291596A1
Authority
EP
European Patent Office
Prior art keywords
bearing
support tube
support
cantilever
annular sector
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.)
Withdrawn
Application number
EP09765606A
Other languages
German (de)
English (en)
Inventor
Gerhard Fuchs
Joachim Ehle
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.)
Fuchs Technology Holding AG
Original Assignee
Fuchs Technology Holding AG
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 Fuchs Technology Holding AG filed Critical Fuchs Technology Holding AG
Publication of EP2291596A1 publication Critical patent/EP2291596A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids or removable covers
    • F27D1/1808—Removable covers
    • F27D1/1816—Removable covers specially adapted for arc furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
    • F16C32/0685—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for radial load only
    • F16C32/0688—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for radial load only with floating bearing elements
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces heated electrically, with or without any other source of heat
    • F27B3/085—Arc furnaces
    • 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
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of electrodes

Definitions

  • the invention relates to a device for pivoting the lid and / or electrodes of a furnace by means of a cantilever.
  • EP-Al-O 056 224 or EP-Al-O 077 319 a device of this type has become known.
  • This document describes an electric furnace with a furnace lid actuated hoist, which has a rigidly connected to a foundation hollow support pin which surrounds a hollow lifting column peripherally.
  • the support pin lifting device preferably a double-acting hydraulic cylinder which is articulated on one hand hingedly connected to the lifting column at its upper end face plate and on the other hand with the foundation, the supporting means of a cantilever cantilever carrying lifting column can be raised and lowered , Further, it can be rotated for pivoting the cover structure relative to the support pin.
  • the lifting column is guided by means of an upper and a lower bearing on the support pin.
  • the bearings are designed as annular bearing bushes, preferably as bronze plain bearing bushes and fastened to the lifting column.
  • the upper ring bearing is based on the causes caused by the lid suspension moments on the side opposite to the cantilever and the lower ring bearing on the side where the cantilever is located on sliding surfaces on the support column from.
  • the applied compressive forces and thus the stress on the bearing can be reduced by increasing the distance between the bearings.
  • the hollow support column, which is fastened to the foundation below the two bearings, is to be dimensioned with regard to the supporting forces acting above its clamping point via the two bearings.
  • the object of the invention is to simplify the storage of the cantilever-bearing support cylinder in a device of the aforementioned type and to reduce the stress on the bearing surfaces.
  • the invention is characterized by the features of claim 1.
  • Advantageous embodiments of the invention can be found in the dependent claims. Since ring-sector-shaped bearing elements are used for the upper and for the lower bearing instead of a ring bearing, which are each arranged symmetrically to the support forces on the support tube, a defined initiation of the supporting forces is formed in the camps with a simplified design of the bearing by easily replaceable bearing elements.
  • the sliding surfaces of these bearing elements, a lubricant is supplied under pressure through at least one bore. This is in the order of 50 to 90% of the pressure caused by the male support force, whereby the friction of the provided on the sliding surfaces with a plastic layer bearing elements can be kept very low.
  • the clamping of the support tube on the foundation is not outside as in the prior art, but between the upper and the lower bearing, preferably in the middle between the two, whereby the load on the support tube and thus its diameter or Wall thickness can be reduced.
  • the erf ⁇ ndungswashe device can be used instead of known turntables of electric arc furnaces for pivoting an electrode framework.
  • a lifting device is fixed in the support tube, through which the support cylinder can be raised and lowered relative to the support tube.
  • a lifting and pivoting device is created, which can be used instead of known lifting and pivoting devices in the steelworks sector, for example as a lifting and pivoting device for a cover portal or an electrode portal.
  • Fig. 1 is a lifting and pivoting device for a carrying a Elektrodentraggerüstenden
  • FIG. 2 shows a substantial part of the lifting and pivoting device of Fig. 1 in a side view
  • FIG. 3 shows the section III-III of Fig. 2
  • Fig. 6 shows the detail VI of Fig. 3 without bearing elements
  • Fig. 7 shows a detail with an inserted bearing element.
  • lifting and pivoting device 1 for pivoting electrodes of an electric arc furnace by means of a cantilever 2 includes a fixed to a foundation 3 support tube 4 and a cantilever 2 supporting support cylinder 5, which is guided by means of an upper bearing 6 and a lower bearing 7 on the support tube 4 slidably.
  • the foundation 3 is the platform of the oven cradle 8 of a tiltable arc furnace.
  • the support for the furnace vessel is designated 9.
  • a support frame 10 is attached, which is in the embodiment, a Elektrodentraggerüst of three juxtaposed support columns 11, 12, 13, in which in known manner lifting columns 14 (there is only one lifting column shown) for electrode support arms 15 are guided by roller bearings 16 ,
  • a pivoting device 17 is provided for pivoting the cantilever 2, a pivoting device 17 is provided and for raising and lowering the cantilever in the support tube 4 accommodated lifting device 18 through which the support arm 5 fixedly connected to the cantilever 2 can be raised and lowered.
  • the pivoting device 17 is shown in more detail in Fig. 4, which illustrates the support frame 10 once in the position shown in FIGS. 1 and 2 in solid lines and once in the pivoted by means of the pivoting device 17 to the side position in dashed lines.
  • the pivot pin 20 is coaxially mounted in the support tube 4 and the rod 21 axially parallel thereto by means of tabs 22 on the support frame 10.
  • this is connected via a joint 23 and a double-acting hydraulic cylinder 29 with an abutment 24 attached to the platform 3.
  • the illustrated in Fig. 1 lifting device 18 for the cantilever 2 is also formed as a hydraulic cylinder 25, which is mounted between a lower pivot bearing 26 and the support tube 4 a top joint bearing 28 fastened to an upper end plate 27 of the support cylinder 5 is clamped in the form of a canopy.
  • the cantilever 2 By actuating the lifting device 18, the cantilever 2 can be raised and lowered and by operating the pivoting device 17, the cantilever arm can be pivoted between two positions, which are shown in FIG. 4 for the support frame 10 firmly connected to the cantilever arm.
  • the support cylinder carrying the cantilever arm is called on the support tube, there called the support column, by an upper and a lower one
  • the upper ring bearing is supported on the opposite side of the cantilever arm on the circumference of the support tube and the lower bearing on the side of the cantilever.
  • the ring bearings are replaced by ring sector bearing members which are mounted on the stressed sides of the bearings, i. the upper bearing 6 opposite to the cantilever 2 and the lower bearing 7 in the direction of the cantilever 2 are arranged on the circumference of the support tube 4.
  • the bearing elements are provided as a plastic bearing with at least one channel through which the sliding surfaces, a lubricant under pressure can be supplied. In addition, the bearing elements are easily replaceable held in brackets.
  • FIG. 3 shows the section HI-III in the upper bearing plane (bearing 6) and FIG. 5 the section VV in the lower bearing plane (bearing 7).
  • three ring sector-shaped bearing elements 30, 31 are for the upper bearing 6 32 provided on the side opposite to the cantilever 2 and the support frame 10 on the circumference of the support tube 4 and shown in FIG. 5 for the lower bearing three ring sector bearing elements 33, 34, 35 on the same side on the circumference of the support tube as the cantilever. 2 Since the exemplary embodiment is a tiltable furnace (opening cradle 8 in FIG.
  • FIG. 6 shows the detail VI of FIG. 3 without the bearing elements and FIG. 7 a detail with a bearing element.
  • a cuboid 40 made of steel, which is fastened to a closure plate 42 by means of a threaded bolt 41 is attached.
  • a bearing plate 43 is mounted, which has a plastic layer as a sliding layer on the side facing the support cylinder 4 side 44.
  • a bore 45 is provided, through which the sliding surface via a line connected to this line a lubricant, preferably oil, can be supplied under pressure.
  • Fig. 6 shows the brackets 46 in the support cylinder 5 (upper bearing 6) and on the support frame 10 (lower bearing 7), in the bearing of FIG. 7 are inserted.
  • holes 47 are provided for screw connections through which the mounting plates 42 are fastened to the edge of the associated brackets 46.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Sliding-Contact Bearings (AREA)
  • Support Of The Bearing (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

La présente invention concerne un dispositif de pivotement d'un couvercle et/ou d'électrodes d'un four de fusion au moyen d'un cantilever (2) fixé à un cylindre porteur (5). Dans le dispositif, le cylindre porteur (5) s'appuie de manière à pouvoir glisser, au moyen d'un palier supérieur et d'un palier inférieur (6, 7), sur un tube support (4) fixé sur une base (3). Dans ce dispositif, les paliers (6, 7) sont chacun formés d'au moins un élément de palier en forme de secteur annulaire dont la surface de glissement peut être alimentée en lubrifiant sous pression.
EP09765606A 2008-06-18 2009-06-16 Portique rotatif pour un four Withdrawn EP2291596A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008028966A DE102008028966A1 (de) 2008-06-18 2008-06-18 Drehportal für einen Ofen
PCT/EP2009/004338 WO2009153026A1 (fr) 2008-06-18 2009-06-16 Portique rotatif pour un four

Publications (1)

Publication Number Publication Date
EP2291596A1 true EP2291596A1 (fr) 2011-03-09

Family

ID=41009971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09765606A Withdrawn EP2291596A1 (fr) 2008-06-18 2009-06-16 Portique rotatif pour un four

Country Status (3)

Country Link
EP (1) EP2291596A1 (fr)
DE (1) DE102008028966A1 (fr)
WO (1) WO2009153026A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109208959B (zh) * 2018-11-19 2021-10-01 宝钢工程技术集团有限公司 一种安装在导电横臂上的电极接续平台
EP3892947B1 (fr) 2020-04-08 2022-01-12 Badische Stahl-Engineering GmbH Dispositif et méthode d'entretien du trou de coulée d'un four à arc électrique
US12152283B2 (en) 2022-02-18 2024-11-26 Badische Stahl-Engineering Gmbh Device and method for filling a tap hole of an electric arc furnace with refractory filling material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT370871B (de) * 1981-01-08 1983-05-10 Voest Alpine Ag Elektroofen, wie lichtbogenofen oder plasmaschmelzofen
AT371921B (de) 1981-10-09 1983-08-10 Voest Alpine Ag Elektroofen
DE3514293A1 (de) * 1985-04-19 1986-10-30 Fuchs Systemtechnik GmbH, 7601 Willstätt Hub- und schwenkvorrichtung fuer den deckel des ofengefaesses eines lichtbogenofens
DE19823226A1 (de) * 1998-05-25 1999-12-02 Arcmet Technologie Gmbh Linz Kippbarer Lichtbogenofen
DE102006041421A1 (de) * 2006-09-04 2008-03-06 Fuchs Technology Ag Schmelzofen, insbesondere Lichtbogenofen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009153026A1 *

Also Published As

Publication number Publication date
WO2009153026A9 (fr) 2011-06-30
WO2009153026A1 (fr) 2009-12-23
DE102008028966A1 (de) 2009-12-24

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