EP0232346B1 - Four a longerons mobiles - Google Patents

Four a longerons mobiles Download PDF

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Publication number
EP0232346B1
EP0232346B1 EP86904833A EP86904833A EP0232346B1 EP 0232346 B1 EP0232346 B1 EP 0232346B1 EP 86904833 A EP86904833 A EP 86904833A EP 86904833 A EP86904833 A EP 86904833A EP 0232346 B1 EP0232346 B1 EP 0232346B1
Authority
EP
European Patent Office
Prior art keywords
pump
assemblies
jack
pipes
distributors
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
EP86904833A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0232346A1 (fr
Inventor
Claude Rouvet
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.)
Fives Stein SA
Original Assignee
Stein Heurtey SA
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 Stein Heurtey SA filed Critical Stein Heurtey SA
Publication of EP0232346A1 publication Critical patent/EP0232346A1/fr
Application granted granted Critical
Publication of EP0232346B1 publication Critical patent/EP0232346B1/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
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • F27B9/202—Conveyor mechanisms therefor
    • F27B9/203—Conveyor mechanisms therefor having ramps

Definitions

  • the present invention relates to ovens with movable beams in which the movable beams form at least two successive sets which are mechanically independent of each other and which can each be moved by a hydraulic cylinder connected to one or more feed pumps.
  • These ovens make it possible to advance products to be heated at different speeds in the two regions of the oven corresponding to the two sets, which is advantageous for example when the oven is partially loaded with hot products from continuous casting.
  • the present invention relates to a furnace with mobile beams of the type indicated above but in which the displacement in synchronization of the two sets of beams is obtained by simple means.
  • the mobile beam oven according to the invention is characterized in that one of the beam sets has a retractable stop which can come into contact with the other set so that each of these sets can push the other, and in that that one of the conduits of one of the pumps is connected respectively to the first conduit and to the second conduit of the other pump by a first bypass, and respectively by a second bypass, so as to be able to turn off said pump and to establish a branch circuit comprising in series one of the supply pumps, the control cylinder of one of the assemblies, the control cylinder of the other assembly, and check valves located on the conduits of said assembly pump, the supply of the branch circuit being controlled by means of distributors located respectively at the connection points of said branches.
  • the liquid discharged by the pump actuates the jack of the first set, which pushes the second set through the stop .
  • the check valve generates a back pressure which slows down the movement of the second assembly so that the stop carried by one of the assemblies remains in contact with the other assembly.
  • the oven may include more than two sets of side members, in which case each set of side members except one has a retractable stopper which can come into contact with one of the sets of adjacent side members and the distributors make it possible to establish a circuit comprising in series the set of control cylinders.
  • the oven with movable beams comprises a charging frame 1a and a charging frame 1b.
  • Each of these chassis comprises longitudinal members 2 which are movable horizontally on a frame 3 and can be moved on this frame by a jack 4a or 4b.
  • the frame 3 can itself be moved both vertically and horizontally on fixed ramps 5 by jacks 6.
  • the cylinder 4a is connected to a reversible pump 7a by two pipes 8a and 9a on which is interposed an exchange block 10a; moreover, a valve 11a is interposed on the line 8a while on the line 9a are interposed a valve 12a and two distributors 13a and 14a, the valve being located between the two distributors.
  • the jack 4b is connected to a pump 7b by two pipes 8b and 9b on which is interposed an exchange block 10b.
  • a valve 11b and a distributor 14b are interposed on the line 8b while, on the line 9b, are interposed a valve 12b and a distributor 13b.
  • the distributors 13a, 14a, 13b and 14b can occupy positions in which each of the pumps 7a and 7b is connected respectively to the jack 4a or 4b ( Figure 1).
  • a pipe 15 connects the distributors 14a and 14b and these distributors can occupy positions in the pump 7a which is isolated from the pipe 9a and is placed in communication with the pipe 8b by the pipe 15, this pipe 8b being isolated from the pump 7b ( Figure 2).
  • a pipe 16 connects the distributors 13a and 13b and these distributors can occupy positions in which the ends of the pipes 9a and 9b connected to the jacks 4a and 4b are placed in communication with each other via the pipe 16 , being isolated respectively from the pump 7a and pump 7b.
  • This pipe 16 is connected to a leakage compensation circuit comprising a pump 17, a valve 18 and a valve 19.
  • a double-acting cylinder 20 which actuates a retractable stop which can come into abutment against the racking frame 1b.
  • This jack 20 is connected to a pump 22 by a distributor 23.
  • the distributors 13a, 14a, 13b and 14b are in their positions in which the jacks 4a and 4b are connected respectively to the pumps 7a and 7b, it is the piston rod 21 and the stop which are spaced from the chassis 1b. Under these conditions, the two release frames 1a and charging 1 move independently of each other.
  • the distributors 13a, 13b, 14a and 14b are in their positions in which one of the sides of the jack 4a is connected to the opposite side of the jack 4b by the pipe 16, the pump 7a being connected to the two other sides of these jacks 4a and 4b.
  • the distributor 23 has been actuated so that the rod 21 of the jack 20 is in contact with the charging frame 1b.
  • the two chassis 1 a and 1 b move rigorously in synchronism.
  • the pump 7a discharges into the cylinder 4b the oil which freely passes through the distributors 14a and 14b, the exchange block 10b and the valve 11b.
  • the chassis 1 pushes the chassis 1a by means of the rod 21 in abutment and of the jack 20.
  • the oil of the jack 4a passes through the valve 11a which is calibrated to a value making it possible to retain and brake the movement of the chassis.
  • Part of the oil returns to the reservoir through the exchange block 10a and the remaining part returns to the pump 7a; it draws in through its make-up valves the volume it lacks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP86904833A 1985-07-24 1986-07-24 Four a longerons mobiles Expired - Lifetime EP0232346B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8511569 1985-07-24
FR8511569A FR2585459B3 (fr) 1985-07-24 1985-07-24 Four a longerons mobiles

Publications (2)

Publication Number Publication Date
EP0232346A1 EP0232346A1 (fr) 1987-08-19
EP0232346B1 true EP0232346B1 (fr) 1990-03-07

Family

ID=9321733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904833A Expired - Lifetime EP0232346B1 (fr) 1985-07-24 1986-07-24 Four a longerons mobiles

Country Status (8)

Country Link
US (1) US4723909A (pt)
EP (1) EP0232346B1 (pt)
JP (1) JPS63500806A (pt)
AU (1) AU581776B2 (pt)
BR (1) BR8606807A (pt)
DE (1) DE3669394D1 (pt)
FR (1) FR2585459B3 (pt)
WO (1) WO1987000612A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919254A (en) * 1988-02-01 1990-04-24 Bricmont & Associates, Inc. Walking beam apparatus and method
US4928811A (en) * 1988-12-07 1990-05-29 Glenn Waineo Walking beam apparatus
FR2659582B1 (fr) * 1990-03-13 1992-06-12 Stein Heurtey Dispositif pour assurer le dechargement et le transfert de produits siderurgiques.
CA2104301A1 (en) * 1991-02-19 1992-08-20 Theodore A. Hammond Level gravity conveyor
US5228819A (en) * 1991-02-19 1993-07-20 Hammond Theodore A Level gravity conveyor
US5314330A (en) * 1992-10-01 1994-05-24 Btu International Walking hearth furnace
US5370530A (en) * 1993-03-24 1994-12-06 Italimpianti Of America, Inc. Rolls for high temperature roller hearth furnaces
US5362230A (en) * 1993-03-24 1994-11-08 Italimpianti Of America, Inc. Rolls for high temperature roller hearth furnaces
US5605427A (en) * 1993-07-06 1997-02-25 Hammond; Theodore A. Level gravity conveyor with gravity return of transfer units
JP3285057B2 (ja) * 1993-09-20 2002-05-27 豊田工機株式会社 自動搬送装置
AUPP283598A0 (en) * 1998-04-07 1998-04-30 W.A. Deutsher Pty Ltd Locater pin
EP1647789A1 (en) * 2004-10-04 2006-04-19 Ngk Insulators, Ltd. Continuous heat treatment furnace and heat treatment method
KR100598852B1 (ko) * 2004-11-24 2006-07-11 현대자동차주식회사 위치 변환장치
CN103343211B (zh) * 2013-07-23 2014-12-31 鞍钢集团工程技术有限公司 一种大型重轨热处理线快速运输装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1324683A (fr) * 1962-06-07 1963-04-19 Wistra Ofenbau Gmbh Four à traverses mobiles
US3721519A (en) * 1970-09-24 1973-03-20 Venetta Eng Furnace charging apparatus
US3749550A (en) * 1971-12-16 1973-07-31 Loftus Engineering Corp Walking beam furnace
US4102449A (en) * 1976-09-10 1978-07-25 United States Steel Corporation Walking beam conveying apparatus and method
DE2851118C2 (de) * 1978-11-25 1992-06-11 Hugo 7995 Neukirch Schrott Einrichtung mit einem Wasservorratsbehälter und einer Teilmengen-Einstellvorrichtung zum Regenerieren des Ionenaustauschers bei einer Geschirrspülmaschine
FR2443038A1 (fr) * 1978-11-30 1980-06-27 Chugai Ro Kogyo Kaisha Ltd Four de rechauffage pour installation de laminage a chaud et son procede de mise en oeuvre
US4403954A (en) * 1980-08-08 1983-09-13 Kubota, Ltd. Apparatus for heat-treating pipes
IT1157609B (it) * 1982-01-22 1987-02-18 Italimpianti Metodo per eliminare o ridurre l'effetto di raffreddamento localizzato dei prodotti siderurgici al contatto con i longheroni raffreddati nei forni a longheroni mobili e forno a longheroni mobili per l'attuazione di tale metodo
US4505670A (en) * 1983-03-02 1985-03-19 Imdec S.R.L Apparatus for moving and thermally conditioning cylindrical containers
JPS59185722A (ja) * 1983-04-06 1984-10-22 Sumitomo Metal Ind Ltd 鋼材加熱炉の加熱方法
JPS6141881A (ja) * 1984-08-03 1986-02-28 中外炉工業株式会社 ウオ−キングビ−ム式加熱炉の鋼片装入装置
FR2570063B1 (fr) * 1984-09-10 1986-12-26 Pont A Mousson Installation de manutention pour objets cylindriques longs, notamment pour tuyaux

Also Published As

Publication number Publication date
EP0232346A1 (fr) 1987-08-19
DE3669394D1 (de) 1990-04-12
BR8606807A (pt) 1987-10-13
AU6147486A (en) 1987-02-10
JPS63500806A (ja) 1988-03-24
FR2585459B3 (fr) 1987-09-25
FR2585459A1 (fr) 1987-01-30
AU581776B2 (en) 1989-03-02
US4723909A (en) 1988-02-09
WO1987000612A1 (fr) 1987-01-29

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