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US3889344A - Extractor for guide rolls - Google Patents

Extractor for guide rolls Download PDF

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Publication number
US3889344A
US3889344A US428566A US42856673A US3889344A US 3889344 A US3889344 A US 3889344A US 428566 A US428566 A US 428566A US 42856673 A US42856673 A US 42856673A US 3889344 A US3889344 A US 3889344A
Authority
US
United States
Prior art keywords
extractor
roll
frame
rolls
carriage
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
US428566A
Other languages
English (en)
Inventor
Jr Charles H Bode
Carlton E Craig
Donald L Friend
Louis G Lazzaretti
Jr George J Wagner
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.)
United States Steel Corp
Original Assignee
United States Steel Corp
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 States Steel Corp filed Critical United States Steel Corp
Priority to US428566A priority Critical patent/US3889344A/en
Priority to AR257081A priority patent/AR208188A1/es
Priority to AU76548/74A priority patent/AU490963B2/en
Priority to GB54925/74A priority patent/GB1496497A/en
Priority to ZA00748134A priority patent/ZA748134B/xx
Priority to AT1029574A priority patent/AT340080B/de
Priority to BR10729/74A priority patent/BR7410729D0/pt
Priority to CA216,693A priority patent/CA1012335A/en
Priority to BE151881A priority patent/BE823786A/xx
Priority to DE19742461396 priority patent/DE2461396A1/de
Priority to IT70752/74A priority patent/IT1027176B/it
Priority to NL7416874A priority patent/NL7416874A/xx
Priority to RO7480949A priority patent/RO65267A/ro
Priority to JP50001966A priority patent/JPS50116327A/ja
Priority to ES433330A priority patent/ES433330A1/es
Priority to FR7442833A priority patent/FR2255979B1/fr
Application granted granted Critical
Publication of US3889344A publication Critical patent/US3889344A/en
Assigned to USX CORPORATION, A CORP. OF DE reassignment USX CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: UNITED STATES STEEL CORPORATION (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1285—Segment changing devices for supporting or guiding frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator

Definitions

  • the extractor is portable and carried by a crane or the like.
  • the frame of the extractor has hooks which engage knobs on a fixed part of the casting machine to obtain a purchase.
  • the extractor includes a carriage movably supported on the frame,
  • a curved roll-rack which guides a casting as its direction of travel through the continuous-casting machine changes from vertical to horizontal.
  • the casting still has a liquid core as it passes through the curved roll-rack. and hence must be closely confined to prevent its solidified skin from bulging.
  • a curved roll-rack includes a large number of opposed top and bottom idler rolls. which contact the concave and convex faces respectively of the casting at close intervals, and sometimes a number of driven rolls interspersed with the idlers to assist in propelling the casting.
  • An object of our invention is to provide an improved extractor which is portable and can be carried by a crane into position for withdrawing or replacing a roll or roll cluster and also used to carry a roll to a work area.
  • a further object is to provide an improved extractor which avoids the need for any special aligning mechanism.
  • a further object is to provide an improved extractor which is cooperable with a continuous-casting machine to hook onto fixed parts of the machine to obtain the purchase necessary to withdraw a roll or roll cluster.
  • a further object is to provide an improved extractor which, in one embodiment, has means for directly engaging the rolls of a cluster of two rolls journaled in a common chock, thereby avoiding need for special lugs on the clusters to enable the extractor to be connected thereto.
  • a more specific object is to provide an improved extractor which has heads insertable between the rolls of a cluster and rotatable 90 from their insertion position to engage the rolls and connect with the cluster.
  • a further object is to provide an improved method of extracting and handling roll clusters in which the extractor is crane-carried into position and hooked to fixed parts of a continuous-casting machine.
  • FIG. I is a partly diagrammatic side elevational view of a portion of a continuous-casting machine equipped with one embodiment of extractor constructed in accordance with the present invention.
  • FIG. 2 is a top plan view on a larger scale of the extractor shown in FIG. I,
  • FIG. 3 is a side elevational view with parts broken away of the extractor shown in FIG. 2;
  • FIG. 4 is an end elevational view from the left on a still larger scale of the extractor shown in FIGS. 2 and
  • FIG. 5 is a partly diagrammatic side elevational view of a portion of a continuous-casting machine equipped with a modified embodiment of extractor constructed in accordance with our invention
  • FIG. 6 is a fragmentary top plan view on a larger scale of the extractor shown in FIG. 5; and FIG. 7 is a side elevational view of the extractor shown in FIG. 6.
  • FIG. 1 shows a curved roll-rack of a construction similar to that shown in the commonly owned applications of Anderton et al. Ser. No. 265,379. filed June 22, I972, a continuation of which issued as US. Pat. No. 334L389, and Hall et al Ser. No. 392.170 filed Aug. 27, I973.
  • the embodiment of the extractor shown in FIGS. I to 4 is particularly useful in conjunction with a curved roll-rack of this construction. Nevertheless use of this extractor is not thus limited, as has been pointed out and will become more apparent from the ensuing description.
  • the curved roll-rack shown in FIG. I includes a frame constructed of arcuate lower, middle and upper idler roll support sections l0, l2 and I3 assembled in aligned end-to-end relation. a first fabricated base member 14 located between the lower and middle sections 10 and 12, a second fabricated base member 15 located between the middle and upper sections 12 and I3, and a third fabricated base member 16 located at the top of the upper section 13.
  • the curved roll rack is supported on a rigid structure 17.
  • a straightener l8 and a bending roll unit 19 of any standard or desired construction are supported at the exit and entry ends respectively of the curved roll-rack.
  • the frame sections carry at their concave edges a plurality of roll supports 20 in which are supported bottom and top clusters 21 and 22 of opposed idler rolls.
  • Each bottom cluster includes a chock 23 in which two bottom rolls are journaled.
  • each top cluster includes a chock 24 in which two top rolls are journaled.
  • Both bottom and top clusters are withdrawn or inserted at the concave side of the frame and are held in their supports 20 with fasteners 2S (wedges or nuts).
  • the base members I4 and 15 serve not only to support arcuate frame sections, but also as roll housings for bottom and top driven rolls 26 and 27.
  • Each roll support 20 carries a respective knob 28 which extends from its outside face near its upper end.
  • FIG. I shows an extractor 31 constructed in accordance with one embodiment of our invention suspended from a conventional overhead crane 32 which has back and front hoists 33 and 33a.
  • the crane runs on a track 34.
  • the hoists suspend respective back and front pairs of crane hooks 3S and 351: which engage respective pairs of lifting eyes 36 and 36:! or equivalent located at opposite sides of the extractor adjacent the back end and spaced rearwardly from the front end.
  • the extractor has a rigid frame of welded construction which, as best shown in FIGS. 2. 3 and 4, includes side members 37, back and central transverse members 38 and 39. and depending U-shaped back and front legs 40 and 40a.
  • the front ends of the side members 37 carry forwardly extending downwardly open hooks 42 rigidly affixed to their outside faces for engagement with any selected set of knobs 28 on the curved roll rack.
  • a carriage 46 within the frame has top and bottom rollers 47 and 48 which engage and run on rails 45.
  • the carriage likewise has a rigid frame of welded construction and includes side members 49 to which the rollers 47 and 48 are jour naled. and back and front transverse members 50 and 51.
  • the extractor frame carries motive means operativcly connected with carriage 46 for propelling the carriage along rails 45.
  • the motive means illustrated includes a pair of double-acting hydraulic cylinders 52 connected to the back transverse member 38 of the extractor frame. and respective pistons and piston rods 53 operating within the cylinders and connected with the back transferse frame member 50 of the carriage (FIG.
  • Respective motor driven pumps 54 supply hydraulic fluid to the cylinders.
  • the motors for driving the pumps are indicated at 55. and reservoirs for hydraulic fluid at 56.
  • the hydraulic circuit is not otherwise illustrated since it is constructed in accordance with well known principles. It is apparent also that many equivalent forms of motive means could be devised in lieu of the hydraulic mechanism illustrated.
  • Carriage 46 also includes a pair of frames 59, one on each side, rectangular in plan and open at the top and bottom rigidly affixed to its front transverse frame member 51.
  • Respective rotary actuators 60 are fixed to the carriage within frames 59.
  • the actuators are driven by a pump 61 which in turn is driven by a motor 62.
  • a reservoir 63 for hydraulic fluid is positioned alongside the motor and pump.
  • FIGS. 2, 3 and 4 show the pump, motor and reservoir mounted on top of the carriage 46. While FIG. I shows these mechanisms mounted on the bottom. We prefer to mount the mechanisms on the top where they are more easily accessible, but in some installations we mount them on the bottom, since there is insufficient clearance with parts of the casting machine to permit us to mount them on the top.
  • the actuators 60 have forwardly projecting rotatable spindles 65 on which we mount respective rolI' engaging heads 66.
  • the back ends of the heads are journaled in bearings 67 mounted on frames 59 (FIG. 2).
  • the heads have spaced apart back and front flanges 68 and 69 contoured to engage the cylindrical surfaces of the rolls.
  • Flange 68 may be circular in outline and continuous.
  • Flange 69 has two diametrically opposed interruptions or flat portions 70 (FIG. 4).
  • flanges 69 can pass between the two rolls of any selected top cluster 22 or the two rolls of any selected bottom cluster 21 of the curved roll rack.
  • the heads rotate 90 from this position, the front flanges 69. as well as the back flanges 68 positively engage the rolls of a cluster.
  • the latch mechanism at each side includes a respective plunger 73 mounted within a longitudinal bore 74 formed in hook 42.
  • a compression spring 75 is housed within bore 74 and acts at opposite ends against the plunger 73 and a nut 76 mounted on the back end of the hook to urge the plunger forward to its latching position.
  • a cable 77 is connected at its front end to plunger 73 and at its back end to a vertical pin 78. This pin depends from a slide 79 which is mounted within guides 80 fixed to the outside of the side member 37.
  • the carriage 46 carries a tripper 8I engageable with pin 78 (FIG. 4).
  • crane 32 picks up the extractor 31 and carries it to a position in which hooks 42 engage the set of knobs 28 opposite the roll cluster to be withdrawn from the curved roll rack and thus obtain a purchase of the extractor on fixed parts of the curved roll-rack.
  • the heads 66 While the carriage is projected, the heads 66 of course are in a position in which the front flanges 69 can pass between two rolls of a cluster 21 or 22.
  • the rotary actuators 60 we operate the rotary actuators 60 to rotate the heads 66 90.
  • FIG. 5 shows a modified form of the extractor 84 constructed in accordance with our invention, but used with a different form of roll-rack in which the bottom and top roll clusters 85 and 86 near the upper end of a frame 87 are withdrawn or inserted at the convex side. In this instance three rolls are journaled in common chocks 88.
  • the frame 87 carries knobs 89 corresponding with knobs 28 of the embodiment already described.
  • the chocks of both bottom and top clusters carry cars 90 which project outwardly toward the convex side of the roll rack.
  • the extractor 84 is suspended from a conventional overhead crane (not shown) with back and front pairs of crane hooks or shackles 92 and 9211.
  • the hooks or shackles engage respective pairs of lifting eyes 93' and 93a or equivalent located at opposite sides of the extractor adjacent the back end and spaced rearwardly from the front end.
  • the extractor has a two-part frame formed of a relatively fixed section 94 and a relatively movable section 95.
  • the fixed section includes rails96 which extend along its inside faces.
  • the movable section has rollers 97 which ride on said rails.
  • a carriage 105 within the movable frame section 95 has rollers 106 which engage and run on rails 96.
  • the movable frame section 95 carries motive means operatively connected with carriage 105 for propelling the carriage along rails 96 and tension bars 108.
  • the motive means illustrated again includes a pair of double-acting hydraulic cylinders 109 (only one shown) attached to the movable frame section. and respective pistons and piston rods 110 operating within the cylinders and connected with the carriage (FIG. 6).
  • the hydraulic circuit can be similar to that of the embodiment already described. Hence, the showing and description are not separated.
  • Carriage 105 has a pair of upstanding brackets 113 located at opposite sides (only one shown). Each bracket carries a respective pair of outwardly projecting stops 114 and has upper and lower holes 115 located forwardly of the stops. Carriage 105 also carries a pair of transverse fluid-pressure cylinders 116 (only one shown which contain respective reciprocable pistons and plungers 117. The plungers are aligned with holes 115.
  • the counterweight serves to balance the extractor when the extractor is carrying a roll cluster.
  • the grating serves to support a workman to enable him to make minor repairs on a roll-rack without actually extracting a cluster.
  • hook 104 equipped with a latch mechanism similar to that shown in the first embodiment. but in this instance released manually with a cable 120.
  • the extractor in any convenient location where it is out of the way but accessible to the crane as long as we are not actually using it.
  • the hooks 42 and 104 can engage the knobs 28 and 89 without need for any special aligning mechanism. Whenever the hooks engage the knob. the crane easily tilts the extractor to the proper position for the roll-engaging means to engage the rolls.
  • An extractor for removing or inserting the rolls of a continuous-casting machine.
  • said extractor comprising a portable frame.
  • an extensible and retractable carriage carried by said frame.
  • motive means carried by said frame and operatively connected with said carriage, roll-handling means carried by said carriage, and operating means on said carriage for connecting the handling means to a roll and disconnecting it therefrom.
  • An extractor as defined in claim 3 comprising in addition retractable latch means carried by said frame for latching said hooks in engagement with the knobs.
  • said latch means includes respective plungers slidably mounted in said hooks, spring means acting on said plungers and urging them to latching position, operating pins for said plungers connected therewith, and trippers carried by said carriage and engageable with said pins for automatically retracting said plungers when said carriage is retracted.
  • said roll-handling means include heads having from and back flanges at opposite ends contoured to engage cy lindrical roll surfaces, said front flanges being interrupted to enable said heads to pass between the rolls when said roll-handling means are in said first position 11.
  • An extractor as defined in claim 11 in which said roll-handling means includes an upstanding bracket mounted on said carriage cooperahle with ears carried by the roll Chocks.
  • brackets carry stops cooperable with ears on the chocks for positioning the carriage and further comprising transversely movahle plungers for connecting the brackets and ears.
  • An extractor as defined in claim 1 comprising in addition a counterweight carried by said frame remote from said roll-handling means to balance the extractor when carrying rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US428566A 1973-12-26 1973-12-26 Extractor for guide rolls Expired - Lifetime US3889344A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
US428566A US3889344A (en) 1973-12-26 1973-12-26 Extractor for guide rolls
AR257081A AR208188A1 (es) 1973-12-26 1974-01-01 Extractor de rodillos de guia
AU76548/74A AU490963B2 (en) 1973-12-26 1974-12-17 Extractor for guide rolls
GB54925/74A GB1496497A (en) 1973-12-26 1974-12-19 Roll racks for continuous casting machines with extractors for rolls thereof
ZA00748134A ZA748134B (en) 1973-12-26 1974-12-20 Extractor for guide rolls
BE151881A BE823786A (fr) 1973-12-26 1974-12-23 Extracteur pour rouleaux de guidage
BR10729/74A BR7410729D0 (pt) 1973-12-26 1974-12-23 Extrator para remocao ou insercao de rolos de uma maquina de fundicao continua processo de extracao de conjuntos de rolos de uma maquina de fundicao continua e extrator portatil
CA216,693A CA1012335A (en) 1973-12-26 1974-12-23 Extractor for guide rolls
AT1029574A AT340080B (de) 1973-12-26 1974-12-23 Fur vorzugsweise bogenformige strangfuhrungen in stranggiessanlagen bestimmte vorrichtung zum aus- und einbau von fuhrungsrollen
IT70752/74A IT1027176B (it) 1973-12-26 1974-12-24 Estrattore per i rolli di guida di una macchina di colata continua
NL7416874A NL7416874A (nl) 1973-12-26 1974-12-24 Inrichting voor het uitlichten of inbrengen van de rollen van een continue gietmachine.
DE19742461396 DE2461396A1 (de) 1973-12-26 1974-12-24 Ausziehvorrichtung fuer den aus- und einbau der rollen einer stranggiessmaschine
JP50001966A JPS50116327A (it) 1973-12-26 1974-12-26
ES433330A ES433330A1 (es) 1973-12-26 1974-12-26 Perfeccionamientos en extractores para retirar o introducirlos rodillos en maquinas de moldeo continuo.
RO7480949A RO65267A (fr) 1973-12-26 1974-12-26 Procede et digesteur pour remplacement des galets a une machine de coulee continue
FR7442833A FR2255979B1 (it) 1973-12-26 1974-12-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US428566A US3889344A (en) 1973-12-26 1973-12-26 Extractor for guide rolls

Publications (1)

Publication Number Publication Date
US3889344A true US3889344A (en) 1975-06-17

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ID=23699460

Family Applications (1)

Application Number Title Priority Date Filing Date
US428566A Expired - Lifetime US3889344A (en) 1973-12-26 1973-12-26 Extractor for guide rolls

Country Status (15)

Country Link
US (1) US3889344A (it)
JP (1) JPS50116327A (it)
AR (1) AR208188A1 (it)
AT (1) AT340080B (it)
BE (1) BE823786A (it)
BR (1) BR7410729D0 (it)
CA (1) CA1012335A (it)
DE (1) DE2461396A1 (it)
ES (1) ES433330A1 (it)
FR (1) FR2255979B1 (it)
GB (1) GB1496497A (it)
IT (1) IT1027176B (it)
NL (1) NL7416874A (it)
RO (1) RO65267A (it)
ZA (1) ZA748134B (it)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995683A (en) * 1974-04-05 1976-12-07 Fives-Cail Babcock Continuous casting apparatus
US4012825A (en) * 1975-04-30 1977-03-22 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alphine Montan Aktiengesellschaft Method of exchanging supporting or driving rollers in a continuous casting plant and apparatus for carrying out the method
FR2423287A1 (fr) * 1978-04-19 1979-11-16 Schloemann Siemag Ag Dispositif de changement de segments pour une installation de coulee continue
US4279408A (en) * 1978-12-07 1981-07-21 The Algoma Steel Corporation, Limited Apparatus for changing tuyeres on a blast furnace
US4457152A (en) * 1981-05-16 1984-07-03 Sms Schloemann-Siemag Aktiengesellschaft Apparatus for changing the tapered rolls of a skew rolling mill

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524554A1 (de) * 1985-07-10 1987-01-22 Mannesmann Ag Verfahren und vorrichtung zum manipulieren von auswechselbaren strangfuehrungssegmenten in bogenstranggiessanlagen fuer metall, insbesondere fuer stahl

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080647A (en) * 1961-05-11 1963-03-12 United States Steel Corp Apparatus for dechocking and chocking mill rolls
US3527286A (en) * 1967-03-28 1970-09-08 Schloemann Ag Continuous casting apparatus having a strand guiding assembly with a trackway alongside
US3543555A (en) * 1967-05-16 1970-12-01 Demag Ag Form changing device for continuous casting
US3628595A (en) * 1969-10-22 1971-12-21 Koppers Co Inc Pivotally mounted starter bar in a continuous casting machine
US3763923A (en) * 1972-03-22 1973-10-09 United States Steel Corp Extractor for withdrawing or inserting roll-clusters

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080647A (en) * 1961-05-11 1963-03-12 United States Steel Corp Apparatus for dechocking and chocking mill rolls
US3527286A (en) * 1967-03-28 1970-09-08 Schloemann Ag Continuous casting apparatus having a strand guiding assembly with a trackway alongside
US3543555A (en) * 1967-05-16 1970-12-01 Demag Ag Form changing device for continuous casting
US3628595A (en) * 1969-10-22 1971-12-21 Koppers Co Inc Pivotally mounted starter bar in a continuous casting machine
US3763923A (en) * 1972-03-22 1973-10-09 United States Steel Corp Extractor for withdrawing or inserting roll-clusters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995683A (en) * 1974-04-05 1976-12-07 Fives-Cail Babcock Continuous casting apparatus
US4012825A (en) * 1975-04-30 1977-03-22 Vereinigte Osterreichische Eisen- Und Stahlwerke-Alphine Montan Aktiengesellschaft Method of exchanging supporting or driving rollers in a continuous casting plant and apparatus for carrying out the method
FR2423287A1 (fr) * 1978-04-19 1979-11-16 Schloemann Siemag Ag Dispositif de changement de segments pour une installation de coulee continue
US4279408A (en) * 1978-12-07 1981-07-21 The Algoma Steel Corporation, Limited Apparatus for changing tuyeres on a blast furnace
US4457152A (en) * 1981-05-16 1984-07-03 Sms Schloemann-Siemag Aktiengesellschaft Apparatus for changing the tapered rolls of a skew rolling mill

Also Published As

Publication number Publication date
AT340080B (de) 1977-11-25
BE823786A (fr) 1975-06-23
ATA1029574A (de) 1977-03-15
BR7410729D0 (pt) 1975-09-02
GB1496497A (en) 1977-12-30
ES433330A1 (es) 1976-12-16
FR2255979B1 (it) 1978-07-07
DE2461396A1 (de) 1975-07-17
ZA748134B (en) 1976-01-28
AU7654874A (en) 1976-06-17
FR2255979A1 (it) 1975-07-25
CA1012335A (en) 1977-06-21
NL7416874A (nl) 1975-06-30
RO65267A (fr) 1979-08-15
JPS50116327A (it) 1975-09-11
AR208188A1 (es) 1976-12-09
IT1027176B (it) 1978-11-20

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Legal Events

Date Code Title Description
AS Assignment

Owner name: USX CORPORATION, A CORP. OF DE, STATELESS

Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960

Effective date: 19880112