US3307841A - Tilting converter with a bow-shaped carrier frame and an exchangeable converter vessel - Google Patents

Tilting converter with a bow-shaped carrier frame and an exchangeable converter vessel Download PDF

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Publication number
US3307841A
US3307841A US324620A US32462063A US3307841A US 3307841 A US3307841 A US 3307841A US 324620 A US324620 A US 324620A US 32462063 A US32462063 A US 32462063A US 3307841 A US3307841 A US 3307841A
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Prior art keywords
vessel
converter
tilting
carrier frame
bow
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Expired - Lifetime
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US324620A
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English (en)
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Lixenfeld Wolfgang
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Individual
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/50—Tilting mechanisms for converters

Definitions

  • converter carrier frames are mostly of bow-shaped or ring-shaped configuration, and, as such, are customarily installed or set in between the converter vessel and the converter carrier frame in such a manner that the tilting trunnions of the vessel are arranged simultaneously in the carrier frame and in the converter stand.
  • the present invention relates to an improvement on the last-mentioned separate journal arrangement, which has as its basic object to provide a device which undertakes, with the aid of the carrier frame, to make it possible to exchange the converter vessel without requiring the generally customary hub installations usually arranged either on the carrier frame or on the converter stand or on a converter transport carriage, which hub installations must be especially carefully perfected and fitted according to the size of the vessel.
  • An object of this invention resides in the provision of a tilting converter provided with means for raising and lowering the vessel thereof while permitting the tiltable vessel to remain in a vertical position.
  • a further object of the invention lies in the use of a carrier frame on which a tilting vessel is removably journalled by trunnions.
  • the carrier frame itself is mounted by means of tilting stub shafts on a support stand with the tilting stub shafts offset from the trunnions.
  • the use of locking means between the carrier frame and the vessel permit the alternative use of the tilting drive means normally used for tilting the vessel to be used for raising and lowering the vessel to facilitate replacement thereof.
  • An additional object of the invention is to provide for removal and exchange of tilting vessels from a carrier therefor, by means of detachable bearing assemblies.
  • a tilting converter having a support stand with tipping pins rotatably mounted in said stand.
  • a bow-shaped carrier frame fixed to said tipping pins, and an exchangeable tilting vessel having trunnions fixed thereto is journalled in the carrier frame.
  • the trunnions are offset from said tipping pins.
  • Means are provided on said tipping pins for rotating said tipping pins and hence said carrier frame to raise and lower said tilting vessel.
  • the converter vessel can be journalled over its carrier trunnions by detachable-cover journals located in the bow-shaped swingable carrier frame, and this frame in turn, with its pin for engaging the vessel for tilting purposes, is journalled on trunnions in a converter support stand.
  • the converter vessel is exchangeable with the aid of the swingable carrier frame.
  • the respective journal centers in the bow-shaped carrier frames for the carrier trunnions as well as for the tilting pins each preferably lie.on the longitudinal axis of the vessel.
  • the tilting pin bearings located in the bow-shaped carrier frame are arranged opposed to the vessel trunnion journal and offset relative to the longitudinal axis of the vessel.
  • the vessel is joined with the bowshaped carrier frame by means of a nesting bolt which engages a lug in the vessel and rests within a recess of the carrier frame, the direction of the engaged nesting bolt being such that its extended axis intersects the longitudinal axis of the vessel at the central horizontal axis of the This nesting pin is only disengaged for an exchange of vessels and is replaced into position again into the newly exchanged vessel.
  • the converter vessel can also be connected to the bow-shaped carrier frame by means of a penduiously arranged oscillating device, guided by means of a pin guide or trunnion guide on the vessel whereby the converter can be set into a to and fro pendulous swinging motion to provide an agitation of the molten bath during and/or after the oxygen blowing operation.
  • the detachable journals for the carrier trunnions may be equipped with securing elements.
  • This securing can be carried out preferably by means of one or several pins which can be suitably held fast relative to the trunnions by means of hydraulically or pneumatically actuable pistons, or through adjustable threaded spindles.
  • the swinging movement of the bow-shaped frame for the purpose of exchanging the vessels can be brought about by means of the already provided tilting drive, so that a special swinging movement drive or hub turning device is unnecessary.
  • FIG. 1 is a side view of a converter with an exchangeable vessel in operating position, shown in a partial cross section together with a carriage wagon and bow-shaped carrier frame;
  • FIG. 2 is a partial front view of the vessel of FIG. 1 with a fragmentary cross section taken through the carrier trunnion bearing;
  • FIG. 3 is a side view in accordance with FIG. 1 except that the carrier frame is shown in a different position corresponding to a lowered position of the converter vessel;
  • FIGS. 4 through 7 illustrate respectively different embodiments of several other journals for the converter carrier trunnions
  • FIG. 8 is a cross section taken along line VIII-VIII of FIG. 7.
  • FIGS. 1 and 2 there is shown a converter vessel illustrated in its operating position with its carrier runnions 2 pivotally supported in a bow-shaped carrier rame 3 having detachable-cover journal 3a.
  • the carier frame 3 which is provided with a vessel-engaging lidable pin 13 which can fit into a recess 1a in the lower :uter side wall of the vessel 1.
  • the pin 13 is slidably mounted for longitudinal motion in a cylinder bore 312 y means of its pistol head, movable by means of a hylraulic or pneumatic pressure device or by means such .s a screw spindle.
  • This pin 13 is arranged in a direcion so that its extended axis intersects the point of interection of the vessel axis y and the axis x of the tilting hafts 4.
  • the bow-shaped carrier frame 3 is mounted in the :onverter support stand 24 by means of the two tilting tub shafts 4 which shafts at the same time are provided 11 one or both sides with a tipping drive (not shown) or tilting the vessel 1 by means of gears 14, as shown [1 FIG. 2.
  • the carrier trunnions 2 and the tipping hafts 4 in operating position of the vessel both lie on the ongitudinal axis y, and are journalled in the bow-shaped arrier frame 3.
  • the carrier trunnions 2 and the ipping shafts 4 located in the journal places of the carier bow frame 3 become offset, that is their centers are ccentrically located from each other a distance a.
  • This listance a is also illustrated in FIG. 1. If the vessel must be set down, in order to make any necessary relairs to the refractory lining which may have become trongly eroded during the oxygen blowing operation by neans of the oxygen lance 50, or in order to repair any vther damage which may have taken place, this is ccomplished by means of a swinging upward of the bow rame 3 to the position of FIG. 3.
  • the vessel is detosited onto a carriage 20, provided with a platform 21 vhich is transversely slidably by means of a crank 22.
  • the vessel 1 By a further swinging of the bow frame 3 upwardly bout the angle a, the vessel 1, after loosening and deaching its cover bearing 3a, can be transported away by neans of the carriage wagon 20 and a reconditioned subtitute vessel 1 can now be introduced on a second simiar carriage wagon 20.
  • the bow 3 frame After an adjustment of its horiontal stub-shaft axis 2 over the transversely slida-ble llatform 21, the bow 3 frame can then be swung down lift up this substitute vessel by engaging its carrier runnions 2.
  • the bearings 3a on the bow frame 3 en- ;age the carrier pins 2, so that after a downward swingng movement of the bow frame 3 the vessel comes into he operating position of FIG. 1.
  • the pins 13 located n the carrier bow 3 are shifted into place to engage the ecesses 1a of the converter vessel 1.
  • the bow frame 3 can also be provided on its transerse yoke with an additional swinging device for persitting a pendulous movement of the vessel 1, by means f a linkage (not shown) or pendulum pins at the locaion of the pins 13.
  • the tilting shafts 4 which, as illustrated in FIG. 1, are ertically aligned under the carrier pins 2 in the carrier ow frame 3 in the operating position of the vessel, need lot necessarily be mounted at the point of intersection /I of the longitudinal axis y of the vessel with the horizontal axis x of the tipping shafts 4.
  • the lateral posiioning (relative to FIG. 1) of the tipping shafts can,
  • the detachable housing for the journal of the carrier trunnions 2 of the exchangeable vessel 1 comprises, for example, as illustrated in FIGS. 1 to 3, of a simple cover bearing 3a which is threadedly attachable.
  • a simple cover bearing 3a which is threadedly attachable.
  • suitable bearing cups or races provided with balls, rollers or the like.
  • FIG. 4 illustrates, on the carrier trunnions 2, journal bodies 43 which are slidable and which are threadedly engageable at their flanges, with the bow frame 3.
  • the bearing bodies 43 are provided with an inner race 42 and with a trapezoidal-shaped bottom which guidingly engages with lateral play a trapezoidal-shaped recess 35 of the bow frame 3 to permit guiding of the journal body 43 into place.
  • the inclined surface 45a of the bearing housing must in this case correspond at least to the slope position y-3 of the vessel axis y when the bow frame 3 is in upper pivoted position for lifting the vessel.
  • the carrier trunnions 2 of the vessel 1 are fixedly mounted within a cylinder of an upper extended neck 3h of the carrier frame 3.
  • a piston guide is made slidably drivable in this cylinder, so that the pin end 51 can be guided into a predetermined recess located in the trunnion 2, as long as the vessel 1 remains in the illustrated position of FIG. 5 over and against the carrier frame 3 with the carrier frame in its resting position.
  • a half cup 52 is provided below the trunnion 2 which can be provided with friction reducing means.
  • the vessel trunnions 2 are rotatably retained at both sides on the carrier frame 3 by means of hydraulically or pneumatically actuable pistons capable of moving towards and away from the trunnion pins 2.
  • Bearing elements 61 are attached to the pistons 60 and have their ends shaped to conform to the contour of the trunnions 2, and a special semi-circular bottom cup bearing 62 is provided to minimize bearing friction.
  • FIGS. 7 and 8 a separate embodiment is illustrated for guiding and locking the trunnion bearing in the carrier frame 3, locked bearing cups 72 rotatably mounted on the trunnions 2 are each provided with a protruding cam 73.
  • the cam 73 is engageable with a semi-circular recess 30 located in the carrier frame 3.
  • a securing bolt takes over the securing of the cup 72 to the frame 3, so that in order to exchange the vessel 1 this pin 80' must first be removed.
  • the surface of recess 30 may also be provided with a corresponding friction-reducing bearing for a decrease in the bearing friction.
  • All of the bearing embodiments of FIGS. 4-8 are so arranged and layed out that they have securing means to prevent any self-loosening of the trunnion 2 from its bearing position in the carrier frame 3.
  • a tilting converter comprising a support stand, tipping pins rotatably mounted in said stand, a bow-shaped carrier frame rfixed to said tipping pins, an exchangeable tilting vessel having trunnions fixed thereto, said trunnions being journalled in said carrier frame, said trunnions being offset from said tipping pins, and means on said tipping pins for rotating said tipping pins and hence said carrier frame to raise and lower said tilting vessel.
  • a tilting converter comprising a support stand, tipping pins rotatably mounted in said stand, a bow-shaped carrier frame fixed to said tipping pins, an exchangeable tilting vessel having trunnions fixed thereto, said trunnions being journalled in said carrier frame, said trunnions being offset from said tipping pins, operating means on said tipping pins for rotating said tipping pins and hence said carrier frame to raise and lower said tilting vessel, and locking means on said carrier frame for detachably locking said carrier frame to said tilting vessel for tilting said tilting vessel upon actuation of said operating means.
  • a tilting converter comprising a support stand, tipping pins rotatably mounted in said stand, a bow-shaped carrier frame fixed to said tipping pins, an exchangeable tilting vessel having trunnions fixed thereto, said trunnions being journalled in said carrier frame, said trunnions being offset from said tipping pins, and means having a guide mounted on said carrier frame for swingably joining said carrier frame to said tilting vessel so as to permit constrained swinging motion of said vessel relative to said frame during operation of the converter.
  • a tilting converter comprising a support stand, tipping pins rotatably mounted in said stand, a bow-shaped carrier frame fixed to said tipping pins, an exchangeable tilting vessel having trunnions fixed thereto, bearing means journalling said trunnions in said carrier frame, said trunnions being offset from said tipping pins, means on said tipping pins for rotating said tipping pins and hence said carrier frame to raise and lower said tilting vessel, said bearing means being detachable and replaceable, and security elements for holding said trunnions in said bearing means.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
US324620A 1962-11-23 1963-11-19 Tilting converter with a bow-shaped carrier frame and an exchangeable converter vessel Expired - Lifetime US3307841A (en)

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DED0040339 1962-11-23

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430941A (en) * 1964-10-21 1969-03-04 Voest Ag Converter having a carrying structure open on one side
US3632098A (en) * 1968-10-08 1972-01-04 Voest Ag Converter comprising a carrying structure that is open on one side or can be divided
US3738630A (en) * 1971-02-22 1973-06-12 M Stafford Low speed high torque rotary drive for turning a furnace vessel or the like
US3802320A (en) * 1971-02-22 1974-04-09 M Stafford Low speed high torque rotary drive for turning a furnace vessel or the like
US4049249A (en) * 1975-03-12 1977-09-20 Vereinigte Osterreichische Eisen - Und Stahlwerke - Alpine Montan Aktiengesellschaft Tiltable converter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1042876A (en) * 1910-07-28 1912-10-29 Alexander F Stirling Blackwood Converter.
US1266828A (en) * 1917-09-22 1918-05-21 Henry M Lane Conveying mechanism.
US2094736A (en) * 1934-12-17 1937-10-05 Whiting Corp Foundry ladle
DE825455C (de) * 1949-02-24 1951-12-20 Berlin Anhaltische Maschb A G Giesspfannenlagerung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1042876A (en) * 1910-07-28 1912-10-29 Alexander F Stirling Blackwood Converter.
US1266828A (en) * 1917-09-22 1918-05-21 Henry M Lane Conveying mechanism.
US2094736A (en) * 1934-12-17 1937-10-05 Whiting Corp Foundry ladle
DE825455C (de) * 1949-02-24 1951-12-20 Berlin Anhaltische Maschb A G Giesspfannenlagerung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430941A (en) * 1964-10-21 1969-03-04 Voest Ag Converter having a carrying structure open on one side
US3632098A (en) * 1968-10-08 1972-01-04 Voest Ag Converter comprising a carrying structure that is open on one side or can be divided
US3738630A (en) * 1971-02-22 1973-06-12 M Stafford Low speed high torque rotary drive for turning a furnace vessel or the like
US3802320A (en) * 1971-02-22 1974-04-09 M Stafford Low speed high torque rotary drive for turning a furnace vessel or the like
US4049249A (en) * 1975-03-12 1977-09-20 Vereinigte Osterreichische Eisen - Und Stahlwerke - Alpine Montan Aktiengesellschaft Tiltable converter

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AT251619B (de) 1967-01-10

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