EP0364201A1 - Aufsatz für Ofenwagen - Google Patents

Aufsatz für Ofenwagen Download PDF

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Publication number
EP0364201A1
EP0364201A1 EP89310325A EP89310325A EP0364201A1 EP 0364201 A1 EP0364201 A1 EP 0364201A1 EP 89310325 A EP89310325 A EP 89310325A EP 89310325 A EP89310325 A EP 89310325A EP 0364201 A1 EP0364201 A1 EP 0364201A1
Authority
EP
European Patent Office
Prior art keywords
members
refractory
kiln car
horizontally extending
superstructure
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Withdrawn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
EP89310325A
Other languages
English (en)
French (fr)
Inventor
John Elliot
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.)
Acme Marls Ltd
Original Assignee
Acme Marls Ltd
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 Acme Marls Ltd filed Critical Acme Marls Ltd
Publication of EP0364201A1 publication Critical patent/EP0364201A1/de
Withdrawn legal-status Critical Current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
    • F27D5/00—Supports, screens or the like for the charge within the furnace
    • F27D5/0006—Composite supporting structures
    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D3/123—Furnace cars

Definitions

  • This invention relates to kiln cars for use in supporting ceramic ware for firing in a refractory kiln.
  • Such kiln cars normally comprise a non-­refractory trolley which carries a refractory base structure which serves largely to insulate the trolley thermally from the high temperature which exists in the kiln, and a refractory superstructure on which ceramic ware is supported.
  • This invention is more specifically concerned with the refractory superstructure of such kiln cars.
  • the superstructure usually includes a plurality of upright elements which are supported substantially rigidly at their lower ends within the base structure of the kiln car.
  • Such upright elements either directly or indirectly, carry further, horizontal elements which define supporting surfaces on which the ware is placed for firing.
  • Such multi-level superstructures may have a height of some 2 to 3 metres or more above the base structure and may be required to carry very heavy loads. Accordingly, it is necessary to give a substantial degree of rigidity to the superstructure. In some cases this has been achieved by utilising upright elements of which at least one component extends over the full height of the superstructure. In other cases the upright elements are made from several superposed and interconnected sections, in which case they are also interconnected substantially rigidly by transverse members forming part of the horizontally disposed ware-carrying structure.
  • hollow section continuous upright elements are formed with apertures at spaced intervals for the reception of cross-members.
  • the required apertures are formed in the upright elements after they have been fired, this requires a time consuming and costly operation using diamond-­tipped tools.
  • the apertures are formed in the unfired material, the final dimensions are subject to excessive variations and a good-­fit for the cross-members cannot be guaranteed.
  • the strength of the upright element is impaired and it may also be physically damaged at the site of the apertures.
  • a kiln car superstructure comprises:-
  • the vertical members are formed from extruded ceramic material which is cut to the required length before firing, and may if necessary be machined after firing to the exact length required.
  • the coupling members are preferably formed by pressing or moulding and thereby have a closer dimensional tolerance than can be achieved for extruded components.
  • the length of the spigots entering the hollow vertical members is preferably significantly greater than the maximum cross-sectional dimension of said spigots, which are a close-fit within the vertical members.
  • the horizontally extending members may extend either longitudinally or transversely of the length of the superstructure, or in different directions at different levels.
  • the superstructure may comprise further horizontally extending members which rest on the aforesaid horizontally extending members; in use the ware for firing may rest directly on said further horizontally extending members, or on flat refractory plates (usually called “bats") resting on said further horizontally extending members, or on the first mentioned horizontally extending members.
  • each upright element may be secured by being clamped between a pair of metal plates, one of which is fixed in position, for example by being secured to a metal strap carried by the trolley on which the refractory structure is supported.
  • a kiln car 10 comprises a conventional wheeled, metal trolley 11 which supports a refractory base structure 20 and a refractory, ware-carrying superstructure 40.
  • the base structure 20 (which does not form part of the present invention) rests on a concrete or other refractory top plate 12 carried by the trolley 11 and comprises a plurality of uprights posts 21 arranged peripherally of the trolley with vertical wall plates 22 located between adjacent posts to define a hollow base which is filed with lightweight insulating material (not shown).
  • the longitudinal sides of the base structure 20 also include outwardly projecting baffles 23 to limit the downward transmission of radient heat from the hot zone of the kiln to the lower zone in which the non-refractory trolley 11 is located.
  • the top of the base structure 20 is closed by means of refractory plates 24 which rest on the upper edges of the posts 21 and wall plates 22 and are further supported as necessary by additional posts 25 provided at appropriate locations internally of the base structure.
  • the superstructure 40 in accordance with the invention, comprises in the illustrated embodiment a plurality of uprights 41 each comprising a pair of superposed vertical members 42 a and 42 b joined by respective coupling members 43.
  • Each coupling member 43 as most clearly seen in Figure 3 is formed with upwardly and downwardly extending spigots 44 which are received as a close-fit within the vertical members 42 a ,42 b which are themselves hollow.
  • An opening 45 is formed centrally within each coupling member 43 and transversely extending horizontal members 46 extend through the aligned openings 45 to form cross-bearers, which in turn support horizontal longitudinally extending members 47.
  • Flat, ceramic plates 48 may be supported on the longitudinal members 47 and the ware to be fired can then be placed on such plates. Alternatively, in some cases the ware may rest directly on the longitudinal members 47, or on the transverse members 46.
  • the vertical members 42 may be formed by extrusion to a hollow box section and cut to the required lengths before firing. If necessary, after firing the ends of such members may be machined to provide accurately level faces and a precisely controlled length.
  • the internal dimensions of the upright members in this way may have a dimensional tolerance of approximately ⁇ 1.5 mm.
  • the horizontal members 46 and 47 may similarly be formed as extrusions.
  • the coupling members 43 are formed as pressings or mouldings and in this way can be formed to a greater dimensional accuracy, typically ⁇ 0.5 mm.
  • the spigots 44 can reliably be made to dimensions which fit quite snugly within the hollow vertical members, and by ensuring that the length of each spigot is significantly greater than its maximum cross-sectional dimensions, possible mis-alignment betwen the longitudinal centre lines of the superposed vertical members is reduced to a minimum, with the result that the entire upright 41 is sufficiently stable despite the fact that it is constructed from a plurality of superposed components and without a single component extending over its entire height.
  • the accuracy with which the openings 45 in the coupling members 43 can be produced ensures that the transverse members 46 can be located accurately and interfit with the required degree of precision to impart stability to the superstructure without the need for complicated interfitting formations on the components.
  • the uprights 41 comprise only two superposed vertical members 42 a and 42 b and the latter carry at their upper ends top members 50 which include downwardly projecting spigots 51 to enter within the hollow vertical members 42 b , and at their upper faces a groove 52 to receive further transverse members 46 a , which in turn support further longitudinal members 47 a carrying further plates 48 a if required.
  • the top members 50 as illustrated are of a conventional design with only a relatively short projection 51, it will be appreciated that the top members may be formed so as to be generally similar to the coupling members 43 but without the upper portion above the line A-A in Figure 3 so as to provide improved support for the transverse members 47 a .
  • the uppermost transverse members 47 a could be supported by further coupling members 43 carried at the upper ends of the vertical members 42 a .
  • the lowermost vertical members 42 a extend into and through the hollow base 20 and are held in position therein by a suitable structure.
  • the preferred arrangement includes a pair of metal clamping plates 13 which embrace the lower end portion of the lowermost vertical member 42 a and are tightened onto the latter by any suitable means, for example threaded fastening elements or spring clips.
  • One clamping plate of each pair is fixed, as by welding, to a metal base plate or strip provided at the upper face of the trolley 11.
  • the uprights 41 comprise only two superposed vertical members and superstructure affords only two levels of ware-supporting plates, the number of ware-supporting levels and the overall height of the superstructure may be significantly increased without loss of stability.
  • Figure 4 illustrates an upright 41 a which comprises five vertical members 42 c , 42 d , 42 e , 42 f , 42 g , interconnected by means of four coupling members 43, so as to provide with top member 50 five ware-­supporting levels and an overall height of substantially over 2 metres.
  • the vertical members are of varying lengths in order to provide ware-supporting levels at different spacings so that the superstructure is specifically tailored for a particular, mixed load. It will be appreciated that the vertical members are relatively inexpensive to produce and can therefore be manufactured in a wide range of different lengths to enable superstructures to be built in accordance with a wide range of users requirements, without the need for expensive, custom designed components.
  • Figure 5 illustrates a further alternative form of upright 41 b which is of the same height as that illustrated in Figure 4, but includes only two vertical members, 42 h and 42 i connected by a single coupling member 43.
  • the vertical members 42 h and 42 i are formed with cut-outs 49 at various positions throughout their lengths for the reception of transverse members 46 in addition to those which would extend through the opening 45 of the coupling member.
  • this embodiment to some extent retains the disadvantages of forming cut-outs in the upright members, it nevertheless retains the advantages of enabling the overall height of the upright to be increased beyond that which can readily be obtained if it is made in one piece.
  • the coupling members 43 are so arranged as to support transversely extending horizontal members 46, it will be appreciated that they may alternatively be designed to support longitudinally extending horizontal members, or that in the same structure the coupling members at different levels may support horizontal members extending in different directions, for example alternatively transversely and longitudinally.
  • a kiln car superstucture constructed in accordance with the invention has the advantage that the components are relatively simple to manufacture, the structure is stable and can more readily be assembled to a greater height than other superstructure construction systems allow with safety, and that it can readily be modified at any time by interchanging components so that it can readily be adapted to changing requirements of the user in a manner which is not possible with other types of construction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
EP89310325A 1988-10-10 1989-10-10 Aufsatz für Ofenwagen Withdrawn EP0364201A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/GB1988/000860 WO1990004146A1 (en) 1988-10-10 1988-10-10 Kiln car superstructure
WOPCT/GB88/00860 1988-10-10

Publications (1)

Publication Number Publication Date
EP0364201A1 true EP0364201A1 (de) 1990-04-18

Family

ID=10629999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89310325A Withdrawn EP0364201A1 (de) 1988-10-10 1989-10-10 Aufsatz für Ofenwagen

Country Status (2)

Country Link
EP (1) EP0364201A1 (de)
WO (1) WO1990004146A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463290A1 (de) * 1990-06-26 1992-01-02 Norton Gmbh Ofenwagen mit austauschbaren Stützelementen
CN102538452A (zh) * 2012-01-20 2012-07-04 广东摩德娜科技股份有限公司 一种轻便、节能的隧道窑窑车
FR2976543A1 (fr) * 2011-06-15 2012-12-21 Ceritherm Chassis de wagon destine au transport de produits dans les fours
US10030910B2 (en) 2013-10-07 2018-07-24 Saint-Gobain Ceramics & Plastics, Inc. Refractory article
EP3259545A4 (de) * 2015-02-17 2018-11-14 H. C. Starck Inc Gestelle für hochtemperaturmetallverarbeitung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19639531C1 (de) * 1996-09-26 1998-02-05 Riedhammer Gmbh Co Kg Be- und Entladevorrichtung für ein Brennregal
CN102636032A (zh) * 2012-05-05 2012-08-15 于宗亮 可调节式窑车
CN116853752B (zh) * 2023-07-24 2024-01-16 山东中和金石科技集团股份有限公司 一种无机非金属材料烧制送料装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB534546A (en) * 1940-02-20 1941-03-10 Wedgwood & Sons Ltd Josiah Apparatus for use in the firing of pottery ware
EP0067451A1 (de) * 1981-06-16 1982-12-22 Hubertus Dr. Peter Tunnelofenwagen
GB2136100A (en) * 1983-03-09 1984-09-12 Norton Co Firing carriage including a rack structure of refractory material for the ceramics industry
DE8801017U1 (de) * 1988-01-28 1988-03-10 Sigri GmbH, 8901 Meitingen Aufsatz für Brennwagen
DE8802708U1 (de) * 1988-03-01 1988-04-28 Sigri GmbH, 8901 Meitingen Aufsatz für Brennwagen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB534546A (en) * 1940-02-20 1941-03-10 Wedgwood & Sons Ltd Josiah Apparatus for use in the firing of pottery ware
EP0067451A1 (de) * 1981-06-16 1982-12-22 Hubertus Dr. Peter Tunnelofenwagen
GB2136100A (en) * 1983-03-09 1984-09-12 Norton Co Firing carriage including a rack structure of refractory material for the ceramics industry
DE8801017U1 (de) * 1988-01-28 1988-03-10 Sigri GmbH, 8901 Meitingen Aufsatz für Brennwagen
DE8802708U1 (de) * 1988-03-01 1988-04-28 Sigri GmbH, 8901 Meitingen Aufsatz für Brennwagen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463290A1 (de) * 1990-06-26 1992-01-02 Norton Gmbh Ofenwagen mit austauschbaren Stützelementen
FR2976543A1 (fr) * 2011-06-15 2012-12-21 Ceritherm Chassis de wagon destine au transport de produits dans les fours
CN102538452A (zh) * 2012-01-20 2012-07-04 广东摩德娜科技股份有限公司 一种轻便、节能的隧道窑窑车
US10030910B2 (en) 2013-10-07 2018-07-24 Saint-Gobain Ceramics & Plastics, Inc. Refractory article
US11340018B2 (en) 2013-10-07 2022-05-24 Saint-Gobain Ceramics & Plastics, Inc. Refractory article
US12298078B2 (en) 2013-10-07 2025-05-13 Saint-Gobain Ceramics & Plastics, Inc. Refractory article
EP3259545A4 (de) * 2015-02-17 2018-11-14 H. C. Starck Inc Gestelle für hochtemperaturmetallverarbeitung

Also Published As

Publication number Publication date
WO1990004146A1 (en) 1990-04-19

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