US3456819A - Slab handling apparatus - Google Patents

Slab handling apparatus Download PDF

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Publication number
US3456819A
US3456819A US637688A US3456819DA US3456819A US 3456819 A US3456819 A US 3456819A US 637688 A US637688 A US 637688A US 3456819D A US3456819D A US 3456819DA US 3456819 A US3456819 A US 3456819A
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US
United States
Prior art keywords
slab
furnace
rams
ram
slabs
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
US637688A
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English (en)
Inventor
John Thomas O'keefe
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United Engineering and Foundry Co
Original Assignee
United Engineering and Foundry Co
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 United Engineering and Foundry Co filed Critical United Engineering and Foundry Co
Application granted granted Critical
Publication of US3456819A publication Critical patent/US3456819A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Anticipated expiration legal-status Critical
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/004—Transverse moving
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38—Arrangements of devices for charging
    • F27B2009/384—Discharging
    • 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
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0042—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising roller trains
    • 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
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0046—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising one or more movable arms, e.g. forks
    • 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
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0051—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising means to pick up the charge and put it down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2001/00—Composition, conformation or state of the charge
    • F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
    • F27M2001/1539—Metallic articles
    • F27M2001/1547—Elongated articles, e.g. beams, rails
    • F27M2001/1552—Billets, slabs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
    • F27M2003/00—Type of treatment of the charge
    • F27M2003/01—Annealing

Definitions

  • a slab extractor Ifor use with a slab reheating furnace including a hearth, wherein the slab extractor comprises an elongated ram extending and movable in two directions parallel to the direction of travel of said slab through said furnace, a slab-lifting element forming part of the said ram on its end adjacent said furnace, adapted to be brought into the furnace and below a slab, means at the end opposite said furnace for pivotally supporting said ram, gear teeth on one side of said ram, a driven pinion meshing with said gear teeth so as to advance said rams longitudinally relative to said furnace, means arranged below said ram adapted to engage the bottom of the ram to raise the slab-lifting element from a position beneath a slab, to lift a slab from the hearth, and means for moving said ram-lifting means towards and away from said ram.
  • FIGURE 1 is an elevational view, partly in section, of one embodiment of the present invention.
  • FIGURE 2 is a plan view of the apparatus shown in FIGURE 1, and
  • FIGURE 3 is a second elevational view showing the slab extractor in a second position.
  • an opening is provided through which the slabs will pass from the furnace, which opening is provided with independently operated upper and lower furnace doors.
  • the slabs As shown in the drawing which illustrates a portion of the hearth 10, at the delivery side of the furnace 11 there is a slight inclination ⁇ 12 from the horizontal.
  • ⁇ 12 As the slabs are advanced over the horizontal hearth, they will be displaced from the horizontal to an inclined position and should there be any tendency to adhere to the adjacent slab, the adherence will be severed.
  • FIGURES l and 2 there is provided a number of longitudinally extending rams 13, the rams being constructed and arranged so as to fit between the adjacent driven rollers 14 of the slab entry table 15, the table, as previously noted, adapted to receive the slabs from the furnace and convey them onto a rolling mill, not shown.
  • slab engaging heads 17, being of such width as to adequately handle the maximum width slab and which are adapted to be advanced into the furnace between the slab and between the sections of the herth.
  • an advancing mechanism is provided which consists of a motor-driven pinion 21, the pinion being connected to a shaft 22, the shaft in turn being rotated by a common motor 23.
  • Each ram has a separate pinion 21 which meshes with teeth 24 formed on the bottom of the ram 13 and through which means the ram is moved in a longitudinal direction.
  • the rams 13 also are adapted to pivot about the shaft 22 and, in order to allow this to occur, the rams are received in frames 25, the frames being carried by the shaft 22.
  • guide rollers 26 under which the rams pass.
  • FIGURE 2 where there is provided beneath each ram an arm 27, the upper end of the arm being provided with a roller 27a that engages the bottom surface of the ram and over which the ram moves.
  • the arm 27 is carried by a pin 28 rotatably mounted in a bearing block 29, the lower end of which is connected to the piston of the piston cylinder assembly 31 and by which means the arm is arcuately displaced so as to cause the roller to raise the ram 13.
  • a lowering of the roller will allow the ram to lower by its own weight.
  • the slabs are advanced through the furnace 11 in a manner that insures that they will be located in a predetermined position at the exit side of the furnace where they will be supported by the spaced sections of the hearth 10.
  • One such slab is illustrated in IFIGURE l.
  • the hearth is inclined relative to the horizontal so as to automatically separate the two adjacent slabs.
  • the motor 23 On the advancing of a slab to the discharge position in the furnace, the motor 23 will be operated to move the rams 13 in unison over the ram-supporting rollers 27a and, hence, slab-engaging heads 17 into a position with the furnace 11, it being understood that previous to this being done, the lower door of the furnace will be retracted to allow the heads to pass into the furnace.
  • the piston cylinder assemblies 31 will be operated to cause the rollers 27a to raise and lift the rams so as to bring the heads into a supporting position with the slab and above the hearth 10.
  • the rams 13 will be retracted so as to bring the slab above the table roller 14 to a position in the center of the table as controlled by the fixed stroke of the rams after which the piston cylinder assemblies 31 will again be operated to deposit the slab in a parallel manner on the table roller 14.
  • the illustrated arrangement assures that the slabs, when brought from the furnace, will be automatically positioned in a predetermined relationship on the entry table 15. Once the slab is positioned on the table, the rams 13 will continue to lower and be brought to a position adjacent to the furnace door in readiness to receive the next slab.
  • said rams each having a slab engaging surface located at the end of the ram most adjacent to said furnace and adapted to be passed into the furnace below a slab supported on said hearth;
  • first ram support means located remote from said end most adjacent to said furnace for pivotally supporting said rams
  • first drive means connected to said rams for displacing said slab engaging surfaces into and out of said furnace in a substantially horizontal direction and parallel to the direction of slab travel through the furnace;
  • first ram supporting means guiding said rams in said horizontal direction; second ram support means discrete from said first ram supporting means disposed between said slab support surface and first ram support means for engaging said rams; second drive means connected to said second ram support means for vertically displacing said second ram support means and pivotally displacing said rams, whereby said Slab engaging surfaces are displaced into a supporting relation with a slab in said furnace and caused to carry the slab from the furnace upon operation of said first drive means; and said second drive means being constructed and arranged to pivotally displace said rams to deposit a slab eX- tracted from said funnace on said transfer table at a predetermined constant location relative to the table.
  • said second ram support means comprise:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
US637688A 1966-06-01 1967-05-11 Slab handling apparatus Expired - Lifetime US3456819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24391/66A GB1142033A (en) 1966-06-01 1966-06-01 Slab handling apparatus

Publications (1)

Publication Number Publication Date
US3456819A true US3456819A (en) 1969-07-22

Family

ID=10211008

Family Applications (1)

Application Number Title Priority Date Filing Date
US637688A Expired - Lifetime US3456819A (en) 1966-06-01 1967-05-11 Slab handling apparatus

Country Status (3)

Country Link
US (1) US3456819A (de)
DE (1) DE1602194A1 (de)
GB (1) GB1142033A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126689A1 (de) * 1983-05-19 1984-11-28 STEIN HEURTEY, Société Anonyme: Vorrichtung zum Beschicken von Öfen zum Wiedererwärmen oder zur Wärmebehandlung von Gegenständen aus Eisen oder Stahl
FR2566889A1 (fr) * 1984-07-02 1986-01-03 Stein Heurtey Dispositif d'enfournement pour fours a longerons mobiles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US923139A (en) * 1908-10-21 1909-06-01 Hebb Coke Drawer Company Coke-drawing apparatus.
US3243059A (en) * 1962-05-24 1966-03-29 Mesta Machine Co Slab heating furances and extractors
US3375941A (en) * 1966-02-18 1968-04-02 Theodore Repper Jr. Article transfer mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US923139A (en) * 1908-10-21 1909-06-01 Hebb Coke Drawer Company Coke-drawing apparatus.
US3243059A (en) * 1962-05-24 1966-03-29 Mesta Machine Co Slab heating furances and extractors
US3375941A (en) * 1966-02-18 1968-04-02 Theodore Repper Jr. Article transfer mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126689A1 (de) * 1983-05-19 1984-11-28 STEIN HEURTEY, Société Anonyme: Vorrichtung zum Beschicken von Öfen zum Wiedererwärmen oder zur Wärmebehandlung von Gegenständen aus Eisen oder Stahl
FR2566889A1 (fr) * 1984-07-02 1986-01-03 Stein Heurtey Dispositif d'enfournement pour fours a longerons mobiles

Also Published As

Publication number Publication date
DE1602194A1 (de) 1970-03-26
GB1142033A (en) 1969-02-05

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AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630