EP2350325A1 - Device for distributing a material in a molten state - Google Patents
Device for distributing a material in a molten stateInfo
- Publication number
- EP2350325A1 EP2350325A1 EP09751877A EP09751877A EP2350325A1 EP 2350325 A1 EP2350325 A1 EP 2350325A1 EP 09751877 A EP09751877 A EP 09751877A EP 09751877 A EP09751877 A EP 09751877A EP 2350325 A1 EP2350325 A1 EP 2350325A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tilting
- cable
- cable section
- channel
- gully
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
-
- 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
- F27D3/14—Charging or discharging liquid or molten material
- F27D3/145—Runners therefor
Definitions
- the present invention relates to a device for distributing a molten material with a rocking channel supported so as to tilt around a substantially horizontal tilting axis.
- a device for distributing a liquid iron, which flows through a pouring channel of a casting floor of a casting of a blast furnace, on two torpedo wagons or two pockets which are waiting below the pouring floor.
- the tilting gully comprises a support cradle, which is supported by two support journals so that it can tilt about a horizontal tilt axis, and a gutter element with two opposing weir spouts, which is placed from interchangeably in the support cradle.
- a training group of the support cradle comprises a geared motor unit with a crank. This crank is connected by means of a connecting rod to a lever arm of the support cradle.
- Document KR20040046395 discloses a tilting gully in which the gearmotor is coupled, without connecting crank intermediate, to one of the two journals of the support cradle.
- a common fault of these two tilting mechanisms with geared motor unit is that, given the significant weight of the tilting channel, the torque at the output of the gearbox must be quite large, which requires a large geared motor gearbox so expensive .
- An advantage of a drive unit with geared motor unit lies in the fact that a second input shaft connected to a hand wheel can be provided on the gearbox, which makes it possible to manually tilt the tilting channel in the event of a problem. with the motor of the geared motor unit or with its power supply.
- this second input shaft requires an additional gear train with a transmission ratio very high to manually tilt the tilting channel, which further increases the price of the geared motor group.
- tilting gullies whose drive unit of the support cradle comprises a hydraulic or pneumatic cylinder connected to a lever arm of the support cradle.
- a large diameter hydraulic cylinder which requires high flows of hydraulic oil under high pressure to operate, is frowned upon in the immediate vicinity of large quantities of liquid iron (danger of fire).
- a pneumatic cylinder has the disadvantage of not allowing a reliable adjustment of the angle of inclination of the tilting gully.
- the solutions with hydraulic or pneumatic cylinder have the disadvantage of not offering a possibility to manually switch the tilting sluice in case of problem with the supply of hydraulic or pneumatic fluid.
- An object of the present invention is to provide a device for distributing a molten material with a tilting channel equipped with a simple and cheap drive unit, ensuring nevertheless a safe and reliable tilting of the channel tilting.
- this object is achieved by a device according to claim 1.
- the present invention proposes a distribution device for a molten material comprising in a manner known per se: a rocking channel supported so as to be able to tilt around a tilting axis substantially horizontal; a drive unit with a geared motor unit and a force transmission means connecting the geared motor unit to the tilting runner, so as to transmit to the latter a tilting moment about its tilting axis.
- the force transmission means comprises a drum winch driven by the geared motor unit and at least one cable section winding on the drum, respectively taking place from latest; an end of said cable section being fixed to the tilting channel at a distance L from its tilting axis, so as to be able to apply to the tilting channel the tilting moment.
- the effort transmission means essentially comprises simple elements, which are most often available commercially.
- the torque required for the output of the geared motor unit to operate the drum winch is relatively low, so that a geared motor of reduced size, so cheap.
- the gear unit must only have a gear train consisting of a worm gear and a worm gear and can be self-locking when stopped.
- the cable transmission provides a great freedom as regards the location of the drive unit, which can for example be placed on the casting floor, in a cabinet adjacent to the tilting runner, or even in below the tilting gully.
- the cables apart from the cables, there are no mechanical connections between the drive unit and the tilting runner, which facilitates the assembly and disassembly of the drive unit and / or the tilting runner.
- the force transmission means comprises a single cable section which is adapted to transmit to the tilting channel a tilting moment in a first direction to bring it from a first position in a second position, when this section of cable is wound on the drum; and the tilting ditch is balanced to return from the second position to the first position, when unrolling the drum cable.
- the drive unit only serves to produce the torque to swing the tilting ditch in one direction. Tilting of the tilting ditch in the opposite direction is achieved by the gravitational force acting directly on the tilting ditch.
- the force transmission means comprises a first cable section and a second section, one end of the first cable section being fixed to the rocking channel so as to be able to apply to the latter. a tilting moment in a first direction, when this first section of cable is wound on the drum; and one end of the second cable section being attached to the tilting gully so as to be able to apply a tilting moment to the latter second sense, when this second section of cable is wound on the drum.
- the drive unit is used to produce the torque to swing the tilting ditch in two directions.
- this alternative embodiment makes it possible to balance the tilting ditch so that it is in equilibrium between a first position in which it discharges the molten material on the left side and a second position in which it discharges the melt material on the right side. In this equilibrium position, the training group is, therefore, free of any effort.
- the device advantageously comprises a first limit stop defining a first extreme position of inclination for the tilting channel, and a second limit stop defining a second extreme tilting position for the tilting gully. These end stops constitute a safety stop for the tilting runner.
- an attachment point for the cable which is advantageously formed by an attachment system with pretensioned springs.
- an attachment system with pretensioned springs As long as the tension in the cable remains lower than the prestress force of the springs, the latter do not compress, and the fastening system forms a fixed attachment point for the rope.
- the tilting channel is stopped in its tilting movement by an end stop or other rigid obstacle, the force in the cable section exceeds the prestressing force of the springs. The latter then compress, and the attachment point yields proportionally to the modulus of the tensile force, which limits the tension in the cable and prevents premature breakage.
- the tilting channel advantageously comprises two lever arms, the end of the first cable section being fixed to the first lever arm and the end of the second cable section being fixed to the second lever arm.
- These two lever arms are preferably symmetrical with respect to a vertical plane passing through the tilting axis, and each lever arm advantageously supports a cable guide in the form of an arc of circle whose center of curvature is situated on the tilting axis.
- a tensioning weight is advantageously associated with each cable section so as to maintain the latter stretched around the drum, when the cable section does not transmit tensile force.
- the tilting channel comprises a channel member with two opposing spouts which is supported with two support pins so as to tilt around the horizontal tilt axis.
- the rocking channel comprises a support cradle supported with two support pins, so as to tilt around the horizontal tilting axis, and a channel element with two opposing spouts, which is interchangeably placed in the support cradle.
- This variant with support cradle allows easy and fast exchange of the channel element.
- the geared motor unit and the drum winch are preferably arranged next to the tilting channel and advantageously separated from the latter by a protective wall.
- a preferred embodiment further comprises a limit cam fixed on the tilting channel, a device for detecting certain predefined positions of the end-of-travel cam and a circuit for stopping the gearmotor unit when such a predefined position. is detected.
- Fig. 1 a vertical section along the line of section 1 -1 marked in FIG. 2, a distribution device for a molten material according to the invention
- Fig. 2 a horizontal section along the section line 2-2 marked in FIG. 1;
- Fig. 3 a vertical section along the section line 3-3 marked in FIG. 2;
- Fig. 4 a partial section showing the detail indicated by a circle 4 in FIG. 1;
- Fig. 5 a section showing the detail indicated by a circle 5 in FIG. 1.
- the figures in the appendix show a device according to the present invention, which is used, for example, to distribute a molten iron 8, which flows through a pouring channel 10 of a pouring floor 12 of a casting of a blast furnace, on two torpedo wagons 14, 14 ', which are waiting below the casting floor 12.
- This device comprises a tilting gully, generally identified by the reference 16, which advantageously consists of a support cradle 18 and an interchangeable channel element 20.
- the support cradle 18 is equipped with two journals 22, 22 ', which are housed in bearings 24, 24' laterally, so that the support cradle 18 can tilt about a tilting axis 25
- the interchangeable channel element 20 forms a spout 28, 28 'for the cast iron at each of its two ends. It is placed from above in the support cradle 18 and is provided with feet 26, 26 ', which wedge it on the support cradle 18 and immobilize it during the tilting of the latter.
- the rocking channel is shown in the rest position (or waiting), wherein the channel member 20 is substantially horizontal.
- the assembly of the rocking channel 16 is advantageously balanced so as to be in equilibrium in this rest position, that is to say that no moment must be exerted to maintain the channel element 20 substantially horizontal.
- the support cradle 18 can however be tilted in the direction of the arrow 30, in order to bring the channel element 20 into an inclined discharge position in the roadster wagon 14 ( as suggested by broken lines in Fig. 1), and in the direction of the arrow 30 ', to bring the trench element 20 into an inclined discharge position in the roadster car 14'.
- the reference sign 32 identifies a first stop carried by a substructure 34 so as to cooperate with a first abutment 32 'on the support cradle 18 to define an extreme position of inclination of the channel element 20 when the support cradle 18 is tilted in the direction of the arrow 30.
- the reference sign 36 identifies a second stop carried by the substructure 34 so as to cooperate with a second abutment 36 'on the support cradle 18, to define an extreme inclination position of the trench element 20, when the support cradle 18 tilts in the direction of the arrow 30 '.
- This drive unit 40 comprises a geared motor unit 42, which drives a drum winch 44. On the latter rolls up and takes place a cable, which is generally identified with the reference sign 46 and which makes it possible to apply to the tilting runner 16 a tilting moment about its tilting axis 25.
- the drum winch 44 can most often be a standard equipment available in the trade.
- the geared motor unit 42 may comprise an electric motor, hydraulic or pneumatic coupled to the reducer.
- the reducer of the geared motor unit 42 may be quite small. Most often it is sufficient that it comprises a single gear train consisting essentially of a worm and a screw-worm conjugate.
- This worm gear train is advantageously sized so as to be self-locking when stopped. It should be noted that the geared motor unit 42 and the drum winch 44 are, in the embodiment shown in the figures, arranged below the casting floor 12, next to the rocking channel 16, and separated from the latter by a protective wall 48.
- the cable 46 comprises a first cable section 50, provided with an end 52 fixed to the tilting channel 16, at a distance L from its tilting axis 25. , so as to be able to apply to the latter a tilting moment in the direction of the arrow 30 ', and a second cable section 50', provided with an end 52 'fixed to the tilting channel 16, at a distance L of its tilting axis 25, so as to be able to apply to the latter a tilting moment in the opposite direction indicated by the arrow 30.
- the cable 46 forms several windings around the drum winch 44.
- each cable section 50, 50 'can of course be individually fixed to the drum winch 44.
- the support cradle 18 comprises two lever arms 54, 54 'symmetrical with respect to a vertical plane passing through the tilting axis 25.
- the first lever arm 54 serves as a point of attachment to said first end 52 of the first cable section 50
- the second lever arm 54 ' serves as a point of attachment to said second end 52' of the second cable section 50 '.
- each lever arm 54, 54 ' supports a cable guide 56, 56' in the form of a circular arc whose center of curvature is located on the tilting axis 25.
- the references 58, 58 ' identify return pulleys arranged above the cable guides 56, 56 ', symmetrically with respect to a vertical plane passing through the tilting axis 25. These return pulleys 58, 58' serve to guide the cable section 50 50 'respectively, below the casting floor 12 to the top of the drum winch 44.
- the references 59, 59' identify return pulleys arranged above the drum winch 44, to guide the cable section 50 and 50 'respectively on the drum winch 44.
- the second cable section 50 ' is unwound from the drum winch 44 and vice versa.
- the length increase of a cable section 50 is substantially equal to the reduction of the other cable section 50 ', which allows winding and unwinding of the two sections of cable without a problem on the same drum.
- FIG. 5 shows a preferential attachment of the first end 52 of the cable section 50 to the lever arm 54 (the fixing of the second end 52 ' from the cable section 50 'to the lever arm 54' is preferably identical).
- the reference 60 generally identifies a fastening system with springs 62 prestressed, which will now be described in more detail.
- This fastening system comprises a tube 64 provided on one side of a collar 66 and on the other side of a thread 68.
- the tube 64 is housed in a hole 70 of a base 72 of the lever arm 54 with its collar 66 resting on the outer surface 74 of the base 72.
- the springs 62 which are advantageously spring washers (Belleville type springs), are threaded onto the tube 64, on the opposite side of the hole 70.
- a plate 76 is screwed onto the thread 68, so as to compress the springs 62 between its inner face 78 and the inner face 80 of the base 72.
- the springs 62 exert a predefined prestressing force, which substantially corresponds to the maximum tensile force in the cable section 50 to be discounted during the tilting rock dump 16.
- the cable section 50 is fixed to a fixing rod 86 which has a threaded end 88 which passes through the tube 64.
- a tension adjusting nut 90 screwed onto this threaded end 88 forms an adjustable support, with which the fixing rod 86 bears on the lower end of the tube 64. With the aid of this tension adjusting nut 90, it is therefore known to tension the cable section 50. Once the tension in the section of cable 50 is adjusted, the nut 90 is locked by means of a locknut 92.
- the springs 62 do not compress, and the tube 64 forms a fixed support for the fixing rod 86. If the tilting channel 16 is however stopped in its tilting movement by the abutment 32 'or another rigid obstacle, the force in the cable section 50 exceeds the prestressing force of the springs 62, the springs 62 are compressed, and the tube 64 is pulled by the fixing rod 86 in the direction of the arrow 94, proportionally to the modulus of the tensile force, which limits the tension in the cable section 50 and prevents premature breakage.
- FIG. 4 shows a tensioning weight 96 advantageously associated with the cable section 50 so as to keep it stretched around the drum winch 44.
- This is for example a lead cylinder provided with a passage channel 98 for the cable section 50 and which is supported on a stop 100, of so as to exert traction on the cable section 50 toward its first end 52.
- a similar voltage-setting weight 96 ' is advantageously also associated with the cable section 50'.
- the reference 102 globally identifies a limit detection system.
- This system 102 comprises an end-of-travel cam 104 integral with the journal 22 and a detection device 106, making it possible to detect certain predefined positions of this end-of-travel cam, for example by means of mechanical or magnetic contacts or sensors. inductive, capacitive or optical.
- An electrical system (not shown) can then be used to stop the gearmotor unit when such a predefined position is detected.
- the reference 110 identifies a hand wheel for manually tilting the tilting channel 16 in the event of a problem with the motor of the geared motor unit 42 or with its power supply. It will be appreciated that following the important lever arms involved in the transmission of the tilting moment to the tilting channel 16, it is possible to have a reduction gear that is small enough for transmitting the manual force to the drum winch 44.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Jib Cranes (AREA)
- Furnace Charging Or Discharging (AREA)
- Chutes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09751877T PL2350325T3 (en) | 2008-11-10 | 2009-11-03 | Device for distributing a material in a molten state |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU91495A LU91495B1 (en) | 2008-11-10 | 2008-11-10 | Device for repairing molten material |
PCT/EP2009/064529 WO2010052211A1 (en) | 2008-11-10 | 2009-11-03 | Device for distributing a material in a molten state |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2350325A1 true EP2350325A1 (en) | 2011-08-03 |
EP2350325B1 EP2350325B1 (en) | 2012-09-26 |
Family
ID=40718729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09751877A Active EP2350325B1 (en) | 2008-11-10 | 2009-11-03 | Device for distributing a material in a molten state |
Country Status (11)
Country | Link |
---|---|
US (1) | US8795582B2 (en) |
EP (1) | EP2350325B1 (en) |
CN (1) | CN102209795B (en) |
BR (1) | BRPI0916066B1 (en) |
CA (1) | CA2741971C (en) |
ES (1) | ES2396297T3 (en) |
LU (1) | LU91495B1 (en) |
PL (1) | PL2350325T3 (en) |
RU (1) | RU2490330C2 (en) |
UA (1) | UA98426C2 (en) |
WO (1) | WO2010052211A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102049510B (en) * | 2010-12-31 | 2014-01-01 | 无锡巨力重工股份有限公司 | Rack and gear-ring protecting cover structure of dumping vehicle |
CN106903277A (en) * | 2015-12-22 | 2017-06-30 | 天津亿阔金属制品有限公司 | A kind of pouring technology of aluminium ingot |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1775220A (en) * | 1929-05-28 | 1930-09-09 | Aeschbach Friedrich | Device for tilting troughs of dough kneading and mixing machines |
US3307230A (en) * | 1963-05-09 | 1967-03-07 | Oglebay Norton Co | Continuous casting apparatus with positive drive oscillating means |
US3792850A (en) * | 1973-01-18 | 1974-02-19 | A Egorov | Device for melt tapping from metallurgical unit |
JPS5473303U (en) * | 1977-11-02 | 1979-05-24 | ||
JPS55106650U (en) * | 1979-01-19 | 1980-07-25 | ||
JPS55106650A (en) * | 1979-02-09 | 1980-08-15 | Kawasaki Yukou Kk | Closed forging press |
SU859458A1 (en) * | 1979-12-28 | 1981-08-30 | Государственный Ордена Ленина Союзный Институт По Проектированию Металлургических Заводов "Гипромез" | Shaking chute for casting blast furnace smelting products |
US4342908A (en) * | 1980-08-28 | 1982-08-03 | Westinghouse Electric Corp. | Light distribution system for optical encoders |
JPS5852480Y2 (en) * | 1980-10-27 | 1983-11-29 | 新日本製鐵株式会社 | Steel plate slag flow gutter |
SU1602875A1 (en) * | 1987-06-08 | 1990-10-30 | Челябинский металлургический комбинат | Casting yard of blast furnace |
KR20040046395A (en) | 2002-11-27 | 2004-06-05 | 주식회사 포스코 | Moving device for tilting runner |
CN2617774Y (en) * | 2003-05-13 | 2004-05-26 | 武汉钢铁设计研究总院 | Blast furnace hot metal and liquid dregs vertical oscillating guiedvane |
CN1230560C (en) * | 2004-05-20 | 2005-12-07 | 太原钢铁(集团)有限公司 | Blast furnace red-slag safety sliding device |
LU91134B1 (en) * | 2005-01-31 | 2006-08-01 | Wurth Paul Sa | Device for moving a runner |
CN2773089Y (en) * | 2005-03-17 | 2006-04-19 | 武汉宜生机电技术工程有限公司 | Transmission system of blast-furnace iron swinging fluid tank |
-
2008
- 2008-11-10 LU LU91495A patent/LU91495B1/en active
-
2009
- 2009-03-11 UA UAA201107211A patent/UA98426C2/en unknown
- 2009-11-03 EP EP09751877A patent/EP2350325B1/en active Active
- 2009-11-03 BR BRPI0916066A patent/BRPI0916066B1/en not_active IP Right Cessation
- 2009-11-03 PL PL09751877T patent/PL2350325T3/en unknown
- 2009-11-03 RU RU2011123091/02A patent/RU2490330C2/en not_active IP Right Cessation
- 2009-11-03 CA CA2741971A patent/CA2741971C/en not_active Expired - Fee Related
- 2009-11-03 ES ES09751877T patent/ES2396297T3/en active Active
- 2009-11-03 CN CN200980144568.8A patent/CN102209795B/en not_active Expired - Fee Related
- 2009-11-03 US US13/128,547 patent/US8795582B2/en not_active Expired - Fee Related
- 2009-11-03 WO PCT/EP2009/064529 patent/WO2010052211A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010052211A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL2350325T3 (en) | 2013-02-28 |
US20110220688A1 (en) | 2011-09-15 |
UA98426C2 (en) | 2012-05-10 |
RU2011123091A (en) | 2012-12-20 |
BRPI0916066B1 (en) | 2017-05-16 |
RU2490330C2 (en) | 2013-08-20 |
US8795582B2 (en) | 2014-08-05 |
CN102209795B (en) | 2014-11-26 |
CA2741971A1 (en) | 2010-05-14 |
BRPI0916066A2 (en) | 2015-11-10 |
CA2741971C (en) | 2016-04-26 |
CN102209795A (en) | 2011-10-05 |
ES2396297T3 (en) | 2013-02-20 |
WO2010052211A1 (en) | 2010-05-14 |
EP2350325B1 (en) | 2012-09-26 |
LU91495B1 (en) | 2010-05-11 |
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