US3901418A - Operating mechanism for slidable gates - Google Patents

Operating mechanism for slidable gates Download PDF

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Publication number
US3901418A
US3901418A US300957A US30095772A US3901418A US 3901418 A US3901418 A US 3901418A US 300957 A US300957 A US 300957A US 30095772 A US30095772 A US 30095772A US 3901418 A US3901418 A US 3901418A
Authority
US
United States
Prior art keywords
gate
rigging
combination
bell crank
vessel
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
US300957A
Other languages
English (en)
Inventor
Joseph J Klaus
Earl P Shapland
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 US300957A priority Critical patent/US3901418A/en
Priority to CA166,450A priority patent/CA992287A/en
Priority to ZA731964A priority patent/ZA731964B/xx
Priority to IE455/73A priority patent/IE37547B1/xx
Priority to AU53615/73A priority patent/AU469071B2/en
Priority to NL7304204A priority patent/NL7304204A/xx
Priority to BR732218A priority patent/BR7302218D0/pt
Priority to AT272073A priority patent/AT335644B/de
Priority to GB1520373A priority patent/GB1420870A/en
Priority to RO74338A priority patent/RO61552A/ro
Priority to IN712/CAL/73A priority patent/IN138811B/en
Priority to AR247302A priority patent/AR193947A1/es
Priority to DE2315805A priority patent/DE2315805C3/de
Priority to YU862/73A priority patent/YU35523B/xx
Priority to IT67932/73A priority patent/IT980734B/it
Priority to BE129534A priority patent/BE797631A/xx
Priority to HUUE34A priority patent/HU165462B/hu
Priority to SU1903553A priority patent/SU522777A3/ru
Priority to FR7311674A priority patent/FR2205093A5/fr
Priority to PL1973161651A priority patent/PL91822B1/pl
Priority to ES413219A priority patent/ES413219A1/es
Application granted granted Critical
Publication of US3901418A publication Critical patent/US3901418A/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
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/38—Means for operating the sliding gate

Definitions

  • the mechanism includes a linear-motion device (for example a fluid-pressure cylinder and piston) pivoted 0 m 57 23 2D .,n 5 OB 5 2" 2" m km 2" 2" m 1 H G Sn Um ll. 21 55 11.11
  • a linear-motion device for example a fluid-pressure cylinder and piston pivoted 0 m 57 23 2D .,n 5 OB 5 2" 2" m km 2" 2" m 1 H G Sn Um ll. 21 55 11.11
  • a linkage and preferably an [58] Field of Search 222/504, 505, 559, 561, 222/DIG. 5 251/279 7 air-cooled rigging mechanically connect the linear- References Cited motion device with the gate.
  • the li- UNITED STATES PATENTS nearmotion device does not extend out from the bottom of the vessel and is not an obstacle, and it can be installed more conveniently or detached between op- 17 Claims, 7 Drawing Figures m mm .Eu.$ wa ee LBD 5 07 8355 8999 111 WW 7 11 2265 0853 9 1 l9ll. 1230 38 5 8 22 PATENTEU Auszsma sum 1 [1F 3 Illll 1 llllf PATENTED AUBZB I975 sum 2 OF 3 I I I I PATENTE Antes 1.91s
  • SHEET 3 0? OPERATING MECHANISM FOR SLIDABLE GATES
  • This invention relates to an improved mechanism for operating a slidable gate which is used to control flow of material from a bottom-pour vessel.
  • the operating mechanism for the gate usually has included a horizontally extending fluidpressure cylinder and piston or equivalent linearmotion device located below the level of the vessel bottom.
  • the piston travels in the same direction as the gate.
  • Inclusion of a cylinder thus arranged on a ladle has led to problems.
  • the cylinder and hoses attached to it are vulnerable to hot metal, and they may project outside the confines of the vessel bottom where they are an obstacle.
  • One arrangement for overcoming these problems in a ladle gate is to make the cylinder detachable and remove it except when actually needed to operate the gate.
  • the aforementioned application shows this arrangement, but it introduces a new problem that attaching and detaching the cylinder are difficult and hazardous operations when the cylinder is located under a ladle.
  • An object of the present invention is to provide an improved gate-operating mechanism which overcomes the foregoing problems and disadvantages.
  • a further object is to provide an improved gateoperating mechanism which embodies a linear-motion device mounted on the side wall of a vessel and extending approximately parallel with the side wall (that is, approaching the vertical) where it is conveniently accessible and is not an obstacle.
  • a further object is to provide an improved gateoperating mechanism in which the linear-motion device is mounted on the side wall of a vessel and mechanically connected to the gate through a bell crank, and preferably an air-cooled rigging, whereby the parts are protected against overheating.
  • a further object is to provide an improved gateoperating mechanism in which the linear-motion device is located remote from the vessel bottom for more convenient installation and detachment.
  • FIG. 1 is a front elevational view of a ladle equipped with one form of our gate-operating mechanism
  • FIG. 2 is a vertical section on line 11-" of FIG. 1;
  • FIG. 3 is a fragmentary view similar to FIG. 2, but showing the bell crank and adjacent parts positioned for opening the gate frame, for example to change gates;
  • FIG. 4 is a front elevation similar to FIG. 1, but showing a modification
  • FIG. 5 is a vertical section on line V-V of FIG. 4;
  • FIG. 6 is a vertical section on line VI-VI of FIG. 4.
  • FIG. 7 is a vertical section showing another modification.
  • FIGS. 1 and 2 show a conventional bottom-pour ladle 10 for handling liquid metal.
  • the ladle includes a metal shell 12, a refractory lining 13, and a nozzle 14 in the bottom wall.
  • the front of the ladle carries support means l5, 16 to be engaged by suitable handling mechanism for tilting the ladle and dumping the contents when occasion arises.
  • the ladle is equipped with a slidable gate 17 and support means therefore which, apart from our novel operating mechanism, are illustrated as of the construction shown in the aforementioned Shapland et al application.
  • this support means comprises a mounting plate 18 attached to the ladle bottom and surrounding the lower end of nozzle 14, a frame 19 carried by the mounting plate on hinge and latch toggle links 20 and 21, a gate carrier 22 mounted to slide within the frame, and a top plate 23 overlying the gate 17 and having an orifice 24 aligned with the nozzle opening.
  • the gate has an orifice 25 and an integral collector nozzle 26-which extends downwardly and the bore of which is aligned with its orifice.
  • the carrier 22 is movable between the position illustrated in FIG.
  • the carrier contains a plurality of compression springs 27 and pads 28 which are arranged in a pattern around the pouring tube 26 and act upwardly against the gate.
  • the gate and top plate wear rapidly, since they are directly exposed to liquid metal, but they can be removed and replaced readily on opening the frame 19 about the hinge toggle links 20 with the latch toggle links 21 released.
  • the underside of frame 19 carries a heat shield 29.
  • the operating mechanism of our invention comprises a supporting plate 32 pivoted on a horizontal axis to a pair of brackets 33 fixed to the side wall of ladle 10 offset from the ladle-tilting support means 15, 16, but approximately in line with thegate.
  • Plate 32 carries a guide tube 34 of the rigging and an attachment bracket 35 for a linear-motion device illustrated asfluidpressure cylinder 36, which contains a reciprocable piston and piston rod 37. Both the guide tube 34 and bracket 35 are fixed to plate 32.
  • the rigging includes an axially movable tube 38 telescopically received within the guide tube 34 and having an integral cap 39 and external sleeve 40 covering the upper end of the guide tube.
  • tube 38 Preferably we make tube 38 in two parts telescoped and welded together, whereby we use standardized parts to produce a tube of the length required for any ladle.
  • the upper end of sleeve 40 carries a hook-like fixture 41 for removably attaching the cylinder and piston 36, 37.
  • the upper end of the cylinder carries a pin 42 welded thereto to be received in a pocket 43 in fixture 41.
  • the lower edge 44 of the fixture is curved with an increasing radius of curvature from top to bottom.
  • the upper end wall of the cylinder abuts the lower edge 44 of the fixture 41.
  • the cylinder is located at a height where it is convenient to a pouring platform 46 remote from the bottom of the ladle. Thus an operator standing on the platform can easily install or detach the cylinder, and he has no need to work from under the ladle.
  • the rigging, and also the frame 19 and parts housed therein, are air-cooled.
  • the sleeve 40 Near its upper end the sleeve 40 has an air inlet 57, which we connect to a source of air under pressure and which communicates with the interior of tube 38.
  • the tube Near its lower end the tube has an air outlet 58.
  • a flexible hose '59 connects the outlet. 58 to an air inlet 60 on frame 19, which leads to passages within the frame (not shown) We of course disconnect one end of the hose when we open the frame.
  • FIGS. 4, 5 and 6 show a modified embodiment of our invention for use on a ladle a or other vessel, the gate of which is located under or too close to the vesseltilting support l5, 16 to accommodate an operating mechanism arranged as we show in FIGS. 1, 2 and 3.
  • the modified embodiment includes a linear-motion device and rigging, and is illustrated as used with a gate and support-means therefor all of a construction similar to the first embodiment already described; hence we do not repeat the description.
  • the linkage which mechanically connects the rigging and gate carrier 22 includes a bell crank 63, the two arms 63a and 63b of which are horizontally spaced apart.
  • brackets 64 fixed to the lower edge of the ladle outside the two arms 63a and 63b.
  • Arm 63a is aligned with tube 38 of the rigging and pivoted thereto on a pin 65, which need not be readily removable.
  • Arm 63b is aligned with the gate carrier 22.
  • a connecting rod 66 is pivoted at its opposite ends to the arm 63b and to the carrier 22.
  • the pivotal connection of arm 63b to the connecting rod 66 includes a removabl e pin 67.
  • the connecting rod 66 is tubular. Cooling air is transmitted from tube 38 of the rigging via a flexible hose 68 which leads to an air inlet 69 on the connecting rod 66 and thence to the bore of 5 the tubularrod. Before opening the frame, we remove pin 67 and disconnect hose 68.
  • FIG. 7 shows another modified embodiment of our invention in which we simplify the mechanism by connecting the linear-motion device 73 directly to the bell crank 74 and eliminate any rigging.
  • This embodiment again is illustrated as used with a gate and support means therefor of a construction similar to the first em- 5 bodiment already described; hence we do not repeat the description.
  • FIG. 7 shows the bell crank 74 pivoted to the frame 19, although again we can pivot the bell crank to brackets onthe ladle, as in the second embodiment.
  • the gate support means may be aircooled independently of the operating mechanism, for example as shown in the aforementioned Shapland et al application.
  • the bell crank 74 has a hole 77 for insertion of a pin in the same fashion as described with the first embodiment.
  • our invention overcomes many problems encountered with gate-operating mechanisms used heretofore.
  • the latter serves to place the linear-motiondevice as remote as possiblefrom the gate, andalso per- 1 porting means can be opened about the hinged connection for changing gates;
  • said mechanism comprising: a bell crank pivotally mounted on said supporting means adjacent the intersection of the bottom and side walls of the vessel; an elongated linear-motion device for applying a force to operate said gate; means on the side wall of said vessel above said bell crank supporting said device for pivotal movement with respect to said vessel; and means operatively connecting said bell crank both with said device and with said gate; said bell crank being disconnectable to permit said supporting means to move about the hinged connection, without interference from said operating mechanism;
  • said device extending up the side wall of said vessel above said bell crank with the longitudinal axis of said device lying approximately parallel with the side wall, whereby the device is readily accessible without being an obstacle.
  • a combination as defined in claim 1 including in addition means on said bell crank engageable with said supporting means for preventing parts from dropping from said said supporting means when opened.
  • a linear-motion device on the side wall of said vessel operatively connected with said rigging and extending in a direction approximately parallel with the side wall;
  • means including a bell crank linkage mechanically connecting said rigging with said gate.
  • a combination as defined in claim 5 in which the means pivotally supporting said rigging includes a plate pivotally mounted on a side wall of said vessel, said device being removably attached to said plate and to said rigging.
  • a combination as defined in claim 7 in which said rigging is air-cooled, and including means for transmitting cooling air from said rigging to the means slidably supporting said gate.
  • a combination as defined in claim 7 in which said vessel includes a tilting support on its side wall, and said gate is located approximately under said tilting support, said rigging being offset from said gate and said tilting support, the bell crank of said linkage having horizontally spaced arms connected respectively with said rigging and with said gate.
  • connection between said bell crank and said gate includes a tubular connecting rod, and including in addition means for transmitting cooling air from said rigging to the bore of said connecting rod.
  • said linkage includes a bell crank pivotally mounted adjacent the lower edge of said vessel, means pivotally connecting one arm of said bell crank to said rigging, and a connecting rod pivotally connected to the other arm of said bell crank and leading to said gate.
  • a combination as defined in claim 15 comprising in addition an air inlet and an air outlet on said axially movable tube for circulating cooling air therethrough, and means connecting saidoutlet with the means slidably supporting said gate for directing cooling air thereto.
  • a combination as defined in claim 14 in which the means slidably supporting said gate can be opened to enable gates to be changed, and one arm of said bell crank can be disconnected from the part to which it is pivoted so as not to interfere with such opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
US300957A 1972-10-26 1972-10-26 Operating mechanism for slidable gates Expired - Lifetime US3901418A (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
US300957A US3901418A (en) 1972-10-26 1972-10-26 Operating mechanism for slidable gates
CA166,450A CA992287A (en) 1972-10-26 1973-03-20 Operating mechanism for slidable gates
ZA731964A ZA731964B (en) 1972-10-26 1973-03-20 Operating mechanism for slidable gates
IE455/73A IE37547B1 (en) 1972-10-26 1973-03-21 Operating mechanism for slidable gates
AU53615/73A AU469071B2 (en) 1972-10-26 1973-03-21 Operating mechanism for slidable gati
NL7304204A NL7304204A (de) 1972-10-26 1973-03-26
AT272073A AT335644B (de) 1972-10-26 1973-03-28 Vorrichtung zum offnen und schliessen der ausflussoffnung am boden einer giesspfanne
BR732218A BR7302218D0 (pt) 1972-10-26 1973-03-28 Mecanismo para operar uma compota deslizantemente suportada
AR247302A AR193947A1 (es) 1972-10-26 1973-03-29 Mecanismos operativos para compuertas corredizas en recipientes de colada
IN712/CAL/73A IN138811B (de) 1972-10-26 1973-03-29
GB1520373A GB1420870A (en) 1972-10-26 1973-03-29 Operating mechanism for slidable gates
DE2315805A DE2315805C3 (de) 1972-10-26 1973-03-29 Betätigungsvorrichtung für einen Sperrschieber zum öffnen und Schließen der Bodenausgußöffnung eines Gießgefäßes
RO74338A RO61552A (de) 1972-10-26 1973-03-29
IT67932/73A IT980734B (it) 1972-10-26 1973-03-30 Meccanismo per l azionamento di saracinesche scorrevoli di sivie re o simili recipienti di colata
BE129534A BE797631A (fr) 1972-10-26 1973-03-30 Mecanisme d'actionnement pour tiroirs
HUUE34A HU165462B (de) 1972-10-26 1973-03-30
YU862/73A YU35523B (en) 1972-10-26 1973-03-30 Improved device for opening and closing a lip at the bottom of a casting ladle
SU1903553A SU522777A3 (ru) 1972-10-26 1973-03-30 Скольз щий затвор дл сталеразливочного ковша
FR7311674A FR2205093A5 (de) 1972-10-26 1973-03-30
PL1973161651A PL91822B1 (de) 1972-10-26 1973-03-31
ES413219A ES413219A1 (es) 1972-10-26 1973-03-31 Perfeccionamientos en mecanismos para accionar compuertas desplazables.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US300957A US3901418A (en) 1972-10-26 1972-10-26 Operating mechanism for slidable gates

Publications (1)

Publication Number Publication Date
US3901418A true US3901418A (en) 1975-08-26

Family

ID=23161316

Family Applications (1)

Application Number Title Priority Date Filing Date
US300957A Expired - Lifetime US3901418A (en) 1972-10-26 1972-10-26 Operating mechanism for slidable gates

Country Status (20)

Country Link
US (1) US3901418A (de)
AR (1) AR193947A1 (de)
AT (1) AT335644B (de)
BE (1) BE797631A (de)
BR (1) BR7302218D0 (de)
CA (1) CA992287A (de)
DE (1) DE2315805C3 (de)
ES (1) ES413219A1 (de)
FR (1) FR2205093A5 (de)
GB (1) GB1420870A (de)
HU (1) HU165462B (de)
IE (1) IE37547B1 (de)
IN (1) IN138811B (de)
IT (1) IT980734B (de)
NL (1) NL7304204A (de)
PL (1) PL91822B1 (de)
RO (1) RO61552A (de)
SU (1) SU522777A3 (de)
YU (1) YU35523B (de)
ZA (1) ZA731964B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314659A (en) * 1978-06-19 1982-02-09 Flo-Con Systems, Inc. Rotary valve
US4457459A (en) * 1982-04-22 1984-07-03 Uss Engineers And Consultants, Inc. Valve suitable for controlling teeming from furnace tapholes
US5823224A (en) * 1997-06-26 1998-10-20 Brifer International Ltd. Slide valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590775A (en) * 1977-02-17 1981-06-10 Flogates Ltd Sliding gate valves
GB2097901B (en) * 1981-05-01 1985-02-13 Uss Eng & Consult Valve suitable for controlling teeming from furnace tapholes
CN113102742B (zh) * 2021-04-14 2024-06-07 大冶特殊钢有限公司 一种改善大钢锭内部质量的钢液浇铸流量控制系统及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US311902A (en) * 1885-02-10 Stopper for ladles
US1829182A (en) * 1926-05-06 1931-10-27 Beaumont Mfg Company Hopper gate actuating mechanism
US2531556A (en) * 1948-02-13 1950-11-28 Treadwell Construction Company Stopper rig for ladles
US2801035A (en) * 1953-09-17 1957-07-30 Western States Machine Co Power-operated loading gate for centrifugal machines
US3097711A (en) * 1959-11-09 1963-07-16 Lake Shore Inc Skip loading and weighing apparatus
US3106322A (en) * 1961-03-10 1963-10-08 Lynskey William Gaston Fertilizer dispenser

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US506328A (en) * 1893-10-10 Ladle for handling molten steel
US2863189A (en) * 1958-02-03 1958-12-09 Harold S Beck Ladle nozzle construction

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US311902A (en) * 1885-02-10 Stopper for ladles
US1829182A (en) * 1926-05-06 1931-10-27 Beaumont Mfg Company Hopper gate actuating mechanism
US2531556A (en) * 1948-02-13 1950-11-28 Treadwell Construction Company Stopper rig for ladles
US2801035A (en) * 1953-09-17 1957-07-30 Western States Machine Co Power-operated loading gate for centrifugal machines
US3097711A (en) * 1959-11-09 1963-07-16 Lake Shore Inc Skip loading and weighing apparatus
US3106322A (en) * 1961-03-10 1963-10-08 Lynskey William Gaston Fertilizer dispenser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4314659A (en) * 1978-06-19 1982-02-09 Flo-Con Systems, Inc. Rotary valve
US4457459A (en) * 1982-04-22 1984-07-03 Uss Engineers And Consultants, Inc. Valve suitable for controlling teeming from furnace tapholes
US5823224A (en) * 1997-06-26 1998-10-20 Brifer International Ltd. Slide valve

Also Published As

Publication number Publication date
AR193947A1 (es) 1973-05-31
IE37547L (en) 1974-04-26
SU522777A3 (ru) 1976-07-25
GB1420870A (en) 1976-01-14
CA992287A (en) 1976-07-06
NL7304204A (de) 1974-05-01
DE2315805C3 (de) 1978-06-29
AU5361573A (en) 1974-09-26
YU35523B (en) 1981-04-30
BR7302218D0 (pt) 1974-09-24
IT980734B (it) 1974-10-10
BE797631A (fr) 1973-10-01
ES413219A1 (es) 1976-01-01
ZA731964B (en) 1974-01-30
DE2315805A1 (de) 1974-05-09
IE37547B1 (en) 1977-08-17
ATA272073A (de) 1976-07-15
HU165462B (de) 1974-08-28
IN138811B (de) 1976-04-03
YU86273A (en) 1980-10-31
FR2205093A5 (de) 1974-05-24
AT335644B (de) 1977-03-25
PL91822B1 (de) 1977-03-31
DE2315805B2 (de) 1977-11-17
RO61552A (de) 1977-05-15

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STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

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