EP0444312B1 - Rouleau à disques pour four à sole à rouleaux - Google Patents

Rouleau à disques pour four à sole à rouleaux Download PDF

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Publication number
EP0444312B1
EP0444312B1 EP90125531A EP90125531A EP0444312B1 EP 0444312 B1 EP0444312 B1 EP 0444312B1 EP 90125531 A EP90125531 A EP 90125531A EP 90125531 A EP90125531 A EP 90125531A EP 0444312 B1 EP0444312 B1 EP 0444312B1
Authority
EP
European Patent Office
Prior art keywords
disk
support
tubular support
support tube
disks
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 - Lifetime
Application number
EP90125531A
Other languages
German (de)
English (en)
Other versions
EP0444312A1 (fr
Inventor
Sahibzada Saeedur Rahman Dr.-Ing. Laiquddin
Franz Dipl.-Ing. Lenze
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.)
Loi Essen Industrieofenanlagen GmbH
Original Assignee
Loi Essen Industrieofenanlagen 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 Loi Essen Industrieofenanlagen GmbH filed Critical Loi Essen Industrieofenanlagen GmbH
Priority to AT90125531T priority Critical patent/ATE95915T1/de
Publication of EP0444312A1 publication Critical patent/EP0444312A1/fr
Application granted granted Critical
Publication of EP0444312B1 publication Critical patent/EP0444312B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F27D3/02—Skids or tracks for heavy objects
    • F27D3/026—Skids or tracks for heavy objects transport or conveyor rolls for furnaces; roller rails

Definitions

  • the invention relates to a disc roller for roller hearth furnaces, with a rotatable, internally coolable support tube, a plurality of axially spaced apart on the support tube, fixedly connected to this and an insulation surrounding the support tube next to the discs.
  • Such disc rollers have proven themselves in practice. They represent inexpensive roller constructions and are suitable for high-temperature operation, and thanks to the insulation they work with low heat losses.
  • disc rollers of this type (DE-C-37 40 620)
  • the discs are supported directly on the support tube, and they are usually welded to it. This leads to an abrupt jump in temperature at the transitions between the discs and the support tube. Welding cracks can occur. There is also a risk that the disc rollers will warp when removed from the hot oven.
  • the invention has for its object to provide a disc roller of the type mentioned, which has improved thermal properties.
  • the disc roller according to the invention is characterized in that each disc is seated on two lateral support devices which are supported on the support tube and are connected to the associated disks by axial bolts, at least one of the two support devices being firmly connected to the support tube is.
  • Another significant advantage is that the temperature gradient between the material to be treated and the panes is reduced. This largely reduces the formation of heat shadows in the material to be treated.
  • a cavity is created between each disc and the support tube, which reduces the direct heat transfer.
  • This advantageous effect can also be extended to the heat transfer between the disks and the bolts, in accordance with the invention in that the disks each have at least two circumferential webs penetrated by the bolts on their inner circumference.
  • the outflow of heat can be controlled.
  • Another possibility in this regard according to the invention is that the space between the support devices, the associated disk and the support tube is filled with insulating material.
  • the surface temperature of the disc roll can be controlled according to the invention so that it assumes a desired value which is below the furnace temperature and which takes into account the aspects of pimple formation and the temperature uniformity of the material to be heated.
  • the disks each consist of at least two segments adjoining one another in the circumferential direction. This simplifies the manufacture of the high-temperature-resistant panes and works has a positive impact on the maintenance and repair of the roller hearth furnace. Such a division of the panes is indispensable if the two respective associated support devices are inseparably connected to the support tube and a subsequent assembly or replacement of the associated pane is nevertheless to take place.
  • the invention also offers the structurally advantageous possibility that the support devices each consist of flange segments.
  • the disc roller according to the invention is characterized in that the support devices which are firmly connected to the support tube are each welded to a holder which is screwed to the support tube. This not only simplifies all assembly and disassembly work, but also eliminates any direct welded connections to the support tube.
  • the disc roller according to the invention comprises a support tube 1, which is penetrated by an axial inner tube 2 for its internal cooling.
  • a plurality of disks 3 are arranged on the support tube 1, only one of which is shown in each case.
  • the longitudinal sections between the disks and also at the end of the support tube are surrounded by insulation 4.
  • Each disc 3 is seated on two lateral support devices 5 and 6 and is connected to the latter by bolts 7.
  • the support devices consist of flange segments and are welded to the support tube 1.
  • the disk 3 also consists of segments, specifically two segments that connect directly to one another in the circumferential direction.
  • the discs 3 are not in direct heat-transfer contact with the support tube 1. This results in a thermally favorable construction.
  • the cavity which is formed between the two guide devices 5 and 6, the disk 3 and the support tube 1 is filled with insulating material 8.
  • the embodiment according to FIG. 3 differs from that according to FIGS. 1 and 2 in that the disk 3 carries a circumferential, narrow web 9 on its inner circumference.
  • the formed between the disc 3 and the support tube 1, laterally cavity delimited by the guide devices 5 and 6 is thereby extended laterally outwards, which has a positive influence on the heat transfer conditions.
  • Parts of the bolts 7 are covered with the insulating material 8.
  • two webs 9 are provided, namely that they connect laterally to the supporting devices 5 and 6.
  • the two webs 9 are not only at a distance from one another, but also from the lateral support devices 5 and 6.
  • FIG. 5 differs from that according to FIGS. 1 to 4 in that the support device 6 is welded to a holder 10, which in turn is screwed to the support tube 1, as indicated in the lower half of FIG. 5 .
  • the support device 5 is only loosely supported on the support tube 1.
  • the bolts 7 are designed as head bolts and, in contrast to FIGS. 1, 3 and 4, are welded to the support device 6 only on one side.
  • the support of the disks on the support devices can be designed differently, for example in such a way that the support devices form shoulders into which the disks engage.
  • the bolts can also be screwed in, secured with split pins or held by nuts.
  • the disks can consist of a large number of segments. The same applies to the supporting devices. There is no restriction on the number of ridges that are provided on the inner circumference of the disks.
  • insulation material for the cavity Any suitable material can be used within the panes. The cavity can also produce a sufficient effect alone without being filled with insulating material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)

Claims (6)

  1. Rouleau à disques pour fours à rouleaux, avec un tube porteur (1) mobile pouvant être refroidi par l'intérieur, plusieurs disques (3) distants les uns des autres sur l'axe du tube porteur et fermement fixés sur ce dernier, et un isolement (4) entourant le tube porteur contre les disques, caractérisé par le fait que chaque disque (3) est logé sur deux éléments porteurs latéraux (5, 6) s'appuyant sur le tube porteur (1) et liés au disque leur appartenant par des boulons axiaux (7), l'un au moins des éléments porteurs étant directement et fermement fixé au tube porteur.
  2. Rouleau à disques selon la revendication 1, caractérisé par le fait que les disques présentent chacun, sur leur périmètre intérieur, au moins un talon étroit circonférentiel (9) entrecoupé par les boulons (7).
  3. Rouleau à disques selon l'une des revendications 1 ou 2, caractérisé par le fait que l'espace entre les éléments porteurs (5, 6), le disque (3) leur appartenant et le tube porteur (1) est rempli d'un matériel isolant (8).
  4. Rouleau à disques selon l'une des revendications 1 à 3, caractérisé par le fait que les disques (3) sont composés d'au moins deux segments contigus dans le sens circonférentiel.
  5. Rouleau à disques selon l'une des revendications 1 à 4, caractérisé par le fait que les éléments porteurs (5, 6) sont chacun composés de segments de bride.
  6. Rouleau à disques selon l'une des revendications 1 à 5, caractérisé par le fait que les éléments porteurs (5, 6) fixés fermement sur le tube porteur (1) sont soudés à une fixation (10) vissée au tube porteur (1).
EP90125531A 1990-02-24 1990-12-27 Rouleau à disques pour four à sole à rouleaux Expired - Lifetime EP0444312B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90125531T ATE95915T1 (de) 1990-02-24 1990-12-27 Scheibenrolle fuer rollenherdoefen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4005900A DE4005900A1 (de) 1990-02-24 1990-02-24 Scheibenrolle fuer rollenherdoefen
DE4005900 1990-02-24

Publications (2)

Publication Number Publication Date
EP0444312A1 EP0444312A1 (fr) 1991-09-04
EP0444312B1 true EP0444312B1 (fr) 1993-10-13

Family

ID=6400916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125531A Expired - Lifetime EP0444312B1 (fr) 1990-02-24 1990-12-27 Rouleau à disques pour four à sole à rouleaux

Country Status (3)

Country Link
EP (1) EP0444312B1 (fr)
AT (1) ATE95915T1 (fr)
DE (2) DE4005900A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362230A (en) * 1993-03-24 1994-11-08 Italimpianti Of America, Inc. Rolls for high temperature roller hearth furnaces
TW349922B (en) * 1996-12-27 1999-01-11 Kubota Kk Tire roller for transporting slabe
DE10012940A1 (de) * 2000-03-16 2001-09-20 Loi Thermprocess Gmbh Scheibenrolle für Rollenherdöfen
DE10047046A1 (de) 2000-09-22 2002-04-11 Sms Demag Ag Kühlbare Ofenrolle, insbesondere für einen Rollenherdofen
KR100578468B1 (ko) * 2004-05-20 2006-05-10 대한동방 주식회사 단열 롤
DE102014224445A1 (de) 2014-11-28 2016-06-02 Schmidt + Clemens Gmbh & Co. Kg Ungekühlte Ofenrolle, und Verfahren zur Herstellung einer ungekühlten Ofenrolle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923036A (en) * 1928-02-01 1933-08-15 George J Hagan Company Conveyer mechanism
FR782011A (fr) * 1933-11-15 1935-05-27 Perfectionnements aux rouleaux pour fours à transporteurs
DE765909C (de) * 1940-11-24 1953-02-09 Herbert Dipl-Ing Schaefer Rolle fuer Rollgaenge in Waermeoefen
US3456931A (en) * 1967-02-09 1969-07-22 Philip Carey Corp Asbestos millboard conveyor rolls for high temperature use
US4352230A (en) * 1980-01-11 1982-10-05 New Hudson Corporation Fiber covered roller for high temperature applications
DE3740620C1 (en) * 1987-12-01 1988-06-23 Didier Eng Conveying roller for a roller hearth furnace

Also Published As

Publication number Publication date
DE4005900A1 (de) 1991-08-29
ATE95915T1 (de) 1993-10-15
EP0444312A1 (fr) 1991-09-04
DE59003089D1 (de) 1993-11-18

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