KR101442586B1 - Semi auto hole opener for ladle molten outlet - Google Patents

Abstract

The present invention relates to a semi-automatic tap hole opener of a molten steel outlet of a ladle, which is able to accomplish safe and accurate work of opening a tap hole in a very short time, as the work, from the installation of an oxygen torch pipe up to the return after opening the molten steel outlet of the ladle is semi-automatically operated. Accordingly, in the present invention regarding a tap hole opener opening a molten steel outlet (11) of a ladle (10), comprised are a rotating assembly (200) installed on a deck (700) and rotated; an ascent and descent assembly (300) installed in an upper part of the rotating assembly (200), ascending and descending by being guided upwards and downwards along guide rails (320); a link means (400) which is installed and connected to the ascent and descent assembly (300), and in which multiple first links (410) and second links (430) rotate around the axis of a hinge (h); and a torch assembly (500) which is connected to the link means (400) to open the molten steel outlet (11) of the ladle (10) while moved horizontally based on the operation of the link means (400).

Description

Semi auto hole opener for ladle molten outlet

The present invention relates to semiautomatic open air of a molten steel outlet of a ladle, and more particularly, to a semi-automatic open air of a molten steel outlet of a ladle, which is semi-automatic from the installation of an oxygen torch pipe to the return of a molten steel It is about the semiautomatic air of the molten steel outlet of the ladle.

In general, the ladle 1 is for injecting molten steel from a steelmaking furnace into a turndish 9 as shown in FIG. 1. The molten steel is supplied to the bottom of the ladle 1 containing molten steel A saw nozzle for injecting into the tundish 9 and a cassette equipped with a collect nozzle are provided and a sliding nozzle 2 inserted into the tundish 9 is inserted into the collect nozzle.

The saw nozzle serves to inject molten steel into the tundish 9 through an inner nozzle hole. The saw nozzle protects the saw nozzle and the cassette plate from molten steel initially injected into the ladle 1, The wheeler is inserted into the top nozzle hole during ladle preparation operation.

Then, after the sliding nozzle is installed on the collect nozzle of the ladle lower cassette, when the collect nozzle is aligned with the saw nozzle, the wheeler that has blocked the saw nozzle hole is poured and the hole is opened so that the molten steel flows through the sliding nozzle 2 (9).

However, since the wheeler layer directly contacting the molten steel in the ladle is hardened by high-temperature molten steel, even if the nozzle is opened as described above, molten steel may not be poured into the hardened wheeler layer.

In the case where the wheeler is hardened, work for opening the wheeler layer should be performed.

In the conventional case, when molten steel is placed in the ladle 1 in the steelmaking process and is placed in the ladle turret 8, and then the ladle sliding nozzle 2 is opened to open the ladle sliding nozzle 2, The molten steel injection work was performed normally.

1, the operator 6 is placed on the tundish 10 to mount the oxygen pore pipe 4 on the oxygen socket 5, And inserted into the sliding nozzle 2, high-pressure oxygen was blown thereon, and a manual forced-open operation was performed.

However, during the open work by the oxygen torch, the worker has to perform the opening work directly under the high temperature molten steel ladle, so that the molten steel is scattered (3) and the reflux occurs frequently, and the burn injury of the worker frequently occurs. .

Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method and an apparatus for opening a molten steel outlet port of a ladle using semi-automatically operated open air, The operation can be performed safely and accurately, thereby maximizing the safety and accuracy of the work.

Another object of the present invention is to maximize the convenience to the operator by not hindering the walking of the operator when the dog air is not operated.

Another object of the present invention is to provide an oxygen torch pipe capable of adjusting an angle of an oxygen torch pipe when opening a molten steel outlet of a ladle, thereby preventing breakage of the oxygen torch pipe when the oxygen torch pipe is inserted into the molten steel outlet, do.

Another object of the present invention is to provide semiautomatic open air of a molten steel outlet of a ladle for maximizing the efficiency of a product by accurately and stably moving the oxygen torch pipe in a horizontal state through a plurality of links.

According to an aspect of the present invention, there is provided an open air for opening a molten steel outlet of a ladle, comprising: a rotary assembly installed on a deck to rotate; and a guide assembly installed on the rotary assembly, A link means connected to the ascending and descending assembly and rotated by a plurality of links about the hinge, and a link means connected to the link means, And a torch assembly through which the molten steel outlet is opened.

The rotating assembly is formed with a fixed plate fixed on a deck, and a rotating plate which is engaged with the fixed plate and rotated according to the driving of the motor is formed on the fixed plate, and is formed on the upper portion of the fixed plate, the connecting plate and the rotating plate, And a cover.

The elevating and lowering assembly includes a support base on which a guide rail is formed while being installed on the inner side of the cover, and a lifting and lowering member coupled to the guide rail to move up and down according to the operation of the cylinder.

The link means includes a plurality of links connected to the lifting and lowering assembly and having a plurality of links and an auxiliary link which are tilted about the axes of the plurality of hinges and a plurality of gears mounted on the upper portions of the links to tilt the links .

The torch assembly includes a torch device connected to the link means and adapted to move back and forth while maintaining a horizontal state in accordance with the tilting of the link means, an oxygen torch pipe connected to the torch device and opening the molten steel outlet, And a tension device for connecting the oxygen torch pipe to the oxygen torch pipe while tensioning the oxygen torch pipe.

As described above, the semiautomatic open air of the molten steel outlet according to the present invention is installed on the deck on which the ladle is installed, and is rotated, tilted while being lifted and lowered, and the molten steel outlet opening of the ladle is opened by the oxygen torch pipe, It is possible to open the molten steel outlet easily and safely through the open air, so that it is possible to maximize the safety of the work as well as the convenience of the work.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a state diagram of a ladle laying operation according to a conventional technique in a continuous casting facility; FIG.
2 is a perspective view showing an installation state of the open air according to the present invention;
3 is an exploded perspective view showing the open air according to the present invention.
4 is a perspective view showing an open air according to the present invention.
5 is an exploded perspective view of a rotating assembly of open air according to the present invention.
FIG. 6 is an exploded perspective view showing an ascending / descending assembly of open air according to the present invention. FIG.
7 is a perspective view showing link means of open air according to the present invention.
8 is a perspective view of a torch assembly of open air according to the present invention.
9 is a cross-sectional exemplary view showing an internal configuration of a torch assembly according to the present invention.
10 is a perspective view showing the internal structure of the torch assembly according to the present invention in a state in which the cover is opened;
11 is a sectional view taken along the line "AA" in Fig.
12A is an operating state in which the lifting and lowering assembly is lifted to operate the dog air according to the present invention.
FIG. 12B is an operational state in which the rotary assembly is rotated in a state in which the ascending / descending assembly of the open air according to the present invention is elevated.
Figure 12c is an operational state in which the link means according to the invention is tilted;
FIG. 12D is an operating state diagram showing the opening of the molten steel outlet of the ladle as the torch assembly according to the present invention rises; FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing an installation state of the open air according to the present invention, FIG. 3 is an exploded perspective view showing the open air according to the present invention, FIG. 4 is a perspective view showing open air according to the present invention, FIG. 6 is an exploded perspective view showing the upward / downward assembly of the open air according to the present invention, and FIG. 7 is a view showing the linking means of the open air according to the present invention 9 is a cross-sectional view illustrating an internal configuration of a torch assembly according to the present invention, and Fig. 10 is a cross-sectional view illustrating a cover of a torch assembly according to the present invention. Fig. 9 is a perspective view of a torch assembly according to the present invention. 11 is a cross-sectional view taken along the line "AA" in Fig. 10, and Fig. 12A is an operating state in which the lifting and lowering assembly is lifted to operate the open air according to the present invention, FIG. FIG. 12C is an operational state in which the linking means according to the present invention is tilted, FIG. 12D is a view illustrating an operation state in which the torch assembly according to the present invention rises And shows an operation state diagram of opening the molten steel outlet of the ladle.

2 to 12, the present invention relates to an open air 100 for opening a molten steel outlet 11 of a ladle 10, wherein the open air 100 comprises a rotary assembly 200, An assembly 300, a link means 400, and a torch assembly 500.

3 to 5, the rotating assembly 200 includes a fixed plate 210 fixed on a deck 700, a connecting plate 220 formed on the fixed plate 210, A rotating plate 230 is formed on the connecting plate 220.

A support plate 240 on which the motor M is mounted is formed on the rotation plate 230.

At this time, a rotation gear 231 is formed inside the rotation plate 230 so that the support plate 240 can be rotated according to the driving of the motor M by being engaged with the motor M.

The cover 260 covers the rotating assembly 200 at the upper portion of the fixing plate 210, the connecting plate 220 and the rotating plate 230 and the outside of the supporting plate 240.

3 and 6, the ascending and descending assembly 300 includes a support 310 coupled to the inside of the cover 260, a guide rail 320 formed on the inner side of the support 310, A cylinder C fixed to the upper portion of the support plate 240, a guide bar 330 connected to the cylinder C, a cylinder 330 fixed to the guide bar 330 and coupled to the guide rail 320, And a lifting member 340 that moves up and down according to the driving of the first and second driving units C and C.

The supports (310) are fixed on both sides of the inner surface of the cover (260).

The guide rails 320 are formed on both sides of the inner side of the support base 310.

3 to 4 and 7, the link unit 400 includes a first link 410 connected to the lifting member 330 by a cylinder C, a second link 410 connected to the first link 410, A second link 430 connected to the tilting member 420 by a hinge h and a hinge h formed at a lower portion of the tilting member 420. The tilting member 420 is connected to the tilting member 420 by a hinge h, A first auxiliary link 411 and a second auxiliary link 431 which are connected to each other.

A plurality of tilting members 420 are provided on both sides of the tilting member 420. A first gear 440 and a second gear 441 are engaged with each other on the inner side of the tilting member 420.

The first gear 440 is installed on the hinge h connected to the first link 410 and the second gear 441 is installed on the hinge h connected to the second link 430. [ .

The second gear 441 is connected to the first gear 410 and the second link 430 so that the torch assembly 500 can be moved in a horizontal state when the first link 410 and the second link 430 are tilted by the operation of the link means 400. [ It is preferable that the gear 440 is formed of a gear having a larger diameter than the gear 440.

The first auxiliary link 411 is fixed to the first link 410 while being connected to the tilting member 420 by a hinge h.

The second auxiliary link 431 is fixed to the second link 430 while being connected to the tilting member 420 by the hinge h.

As shown in FIGS. 3 to 4 and 8 to 11, the torch assembly 500 is connected to the link means 400 to rotate the torch assembly 500 back and forth while maintaining the horizontal state according to the tilting of the link means 400 An oxygen torch pipe 520 coupled to the torch device 510 to open a molten steel outlet 11 of the ladle 10 and an oxygen torch pipe 520 inserted into the torch device 510. [ And a tension device 530 connected to the oxygen torch pipe 520 to allow the oxygen torch pipe 520 to be tensioned.

The torch device 510 includes a cover 511 connected to the ends of the second link 430 and the second auxiliary link 431 and a cover 511 fixed to the cover 511 to fix the oxygen torch pipe 520 therein A fixing member 512 which is coupled to the outside of the oxygen torch pipe 520 and a fixing member 512 which is coupled to one side of the fixing member 512 and tightly attached to the outer surface of the oxygen torch pipe 520, And an urging member 513 so as to be fixed to the base member 513.

The tension device 530 includes a tension spring 531 connected to the oxygen torch pipe 520 to elastically support the oxygen torch pipe 520 and a tension spring 531 provided at the lower end of the oxygen torch pipe 520, The operation of the open air 100 can be controlled according to the detection signal of the angle detection sensor 532 while being electrically connected to the angle detection sensor 532. The angle detection sensor 532 detects the inclination of the open air 520, And a controller 600 having a controller (not shown).

At this time, the oxygen torch pipe 520 is installed on the deck 700 so that the oxygen torch pipe 520 can be protected without interfering with the walking of the operator when the open air 100 is not operated on the deck 700 And is loaded into the groove 711 of the safety restricting tab 710 to be installed.

The open air 100 according to the present invention is electrically connected to the motor M so as to drive the motor M that operates the rotating assembly 200, the lifting and lowering assembly 300, So that the controller 600 for the operator to operate the open air 100 is constructed.

The operation state according to the present invention having the above-described configuration will be described below.

First, in order to inject molten steel into the ladle 10 in the state where the molten steel is injected into the molten steel outlet 11, the open air 100 according to the present invention is operated to blow the high-pressure oxygen through the oxygen torch pipe 520 So that the molten steel outlet 11 is opened.

When the operator operates the controller 600 to open the molten steel outlet 11 of the ladle 10, the ascending and descending assembly 300 ascends and ascends and the ascending and descending assembly 300 ascends The rotary assembly 200 is rotated so that the oxygen torch pipe 520 is positioned in a straight line with the molten steel outlet 11 of the ladle 10 (see FIGS. 12A to 12B)

After the rotation assembly 200 is rotated, the link unit 400 is tilted in the direction of the ladle 10 and the torch assembly 500 connected to the link unit 400 maintains a horizontal state, (See Fig. 12C).

When the torch assembly 500 is moved and the oxygen torch pipe 520 is positioned at the molten steel outlet 11 of the ladle 10, the ascending and descending assembly 300 is lifted and the torch assembly 500 The oxygen torch pipe 520 is inserted into the molten steel outlet 11 to blow the high pressure oxygen to open the molten steel outlet 11 (see FIG. 12D). (See FIG. 12D)

As described above, the open air 100 of the present invention is configured such that when the oxygen torch pipe 520 is to be opened in the molten steel outlet 11 of the ladle 10 in a state where the oxygen torch pipe 520 is loaded in the groove 711 of the safety protector 710 The cylinder C is operated by the operation of the controller 600 and the guide bar 330 is raised according to the operation of the cylinder C and the ascending and descending member 340 fixed to the guide bar 330 is guided by the guide The link means 400 connected to the lifting and lowering assembly 300 while the lifting and lowering assembly 300 is lifted upward along the rail 320 and the oxygen torch pipe 520 are connected to the groove 711 The torch assembly 500 connected to the link means 400 is lifted together with the link means 400.

When the ascending and descending assembly 300 is lifted, the motor M engaged with the rotary gear 231 of the rotary plate 230 is driven, and the rotary gear 231 is rotated according to the driving of the motor M, The ascending and descending assembly 300 installed on the support plate 240 and the link means 400 and the torch assembly 500 simultaneously rotate the support plate 240 while the support plate 240 rotates, And is rotated in the installation direction.

As the motor M is driven, the cylinder C is operated and the first link 410 and the second link 430 are extended in the forward direction, i.e., in the direction of the ladle 10, with the hinge h as an axis Tilted.

As the first and second auxiliary links 411 and 431 are connected to the first and second links 410 and 430 by the hinge h, When the second link 430 is rotated, the first auxiliary link 411 supports the first link 410 and the second auxiliary link 431 supports the second link 430 and the torch assembly 500 are moved in a horizontal state.

The first gear 440 and the second gear 441 are engaged with the hinge h to which the first link 410 and the second link 430 are connected to the tilting member 420, 2 gear 441 is larger in diameter than the first gear 440 so that the first link 410 and the second link 430 are tilted while extending along the hinge h, So that it can be moved back and forth in a horizontal state.

The torch assembly 500 is moved by the operation of the link means 400 so that the portion of the oxygen torch pipe 520 where high pressure oxygen is injected is positioned below the molten steel outlet 11 of the ladle 10 .

When the oxygen torch pipe 520 of the torch assembly 500 is positioned below the molten steel outlet 11 of the ladle 10, the guide bar 330 is raised by the operation of the cylinder C, The ascending and descending assembly 300 is lifted up as the ascending and descending member 340 is lifted up along the guide rail 320 and the ascending of the ascending and descending assembly 300 causes the torch assembly 500 to move upward So that the oxygen torch pipe 520 is charged into the molten steel outlet 11 of the ladle 10.

When the oxygen torch pipe 520 is charged into the molten steel outlet 11 of the ladle 10 as described above, high-pressure oxygen is injected through the oxygen torch pipe 520 to open the molten steel outlet 11 closed .

When the oxygen torch pipe 520 is charged into the molten steel outlet 11 of the ladle 10, the oxygen torch pipe 520 is prevented from flowing into the molten steel outlet port 11 by molten residue, (11).

The oxygen torch pipe 520 is inclined by the tension spring 531 when the oxygen torch pipe 520 is caught on the remnants remaining in the molten steel outlet port 11. When the oxygen torch pipe 520 is inclined, It is possible to prevent the oxygen torch pipe 520 from being damaged by stopping the operation of the open air 100 by sensing the sensor 532 and receiving the signal of the angle sensor 532 from the controller 600.

Then, the portion of the oxygen torch pipe 520 that has been tilted by the tension force of the tension spring 531 is returned to its original state.

After the high-pressure oxygen is blown through the oxygen torch pipe 520 and the molten steel outlet 11 of the ladle 10 is opened, contrary to the above-mentioned operation, Descending assembly 300 is lowered along the rail 320 so that the oxygen torch pipe 520 is pulled out of the molten steel outlet 11 and the cylinder C is operated by the driving of the motor M, The first link 410 and the second link 430 which are opened on the axis of the hinge h are broken while the link means 400 is lifted and the rotation plate 230 is driven by the motor M, The rotary assembly 200 is rotated so that the elevating and lowering member 340 is lowered along the guide rail 320 and the elevating and lowering assembly 300 is lowered, (711) of the housing (710) to be returned to the standby state do.

Accordingly, in the open air 100 of the present invention, the ascending / descending assembly 300 rises while the ascending and descending member 340 is guided upward along the guide rail 320, The means 400 and the torch assembly 500 are raised together and the rotary assembly 200 is rotated so that the oxygen torch pipe 520 of the torch assembly 500 is positioned in the direction of the molten steel outlet 11 of the ladle 10 The link means 400 is tilted and the oxygen torch pipe 520 is moved to the lower portion of the molten steel outlet 11 and the elevating and lowering assembly 300 rises again so that the oxygen torch pipe 520 is moved to the molten steel outlet 11 And the high-pressure oxygen is blown through the oxygen torch pipe 520 so that the molten steel outlet 11 is opened.

Thus, since the open air 100 is semi-automatically operated to open the molten steel outlet 11 of the ladle 10, the operator does not need to open the ladle directly under the high temperature ladle, It is possible to perform the operation safely without occurrence of the trouble.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

10: ladle 11: molten steel outlet
100: dog air 200: rotary assembly
210: fixing plate 220: connecting plate
230: rotary plate 231: rotary gear
240: support plate 260: cover
300: lifting assembly 310: support
320: guide rail 330: guide bar
340: ascending / descending member 400: link means
410: first link 411: first auxiliary link
420: tilting member 430: second link
431: second auxiliary link 440: first gear
441: Second gear 500: Torch assembly
510: torch device 511: cover
512: fixing member 513:
520: Oxygen torch pipe 530: Tension device
531: Tension spring 532: Angle detection sensor
600: Controller 700: Deck
710: safety stopper 711: groove
M: Motor C: Cylinder
h: Hinge

Claims (11)

In the open air that opens the molten steel outlet of the ladle,
A rotating assembly installed on the deck and rotated;
A lifting assembly installed on an upper portion of the rotary assembly and upwardly and downwardly moving up and down along a guide rail;
Link means connected to the ascending / descending assembly and having a plurality of links and an auxiliary link rotated about a hinge;
And a torch assembly connected to the link means and horizontally moved in accordance with the operation of the link means to open the molten steel outlet of the ladle,
The torch assembly includes:
A torch device connected to the link means and forward and backward while maintaining a horizontal state according to a tilting of the link means;
An oxygen torch pipe coupled to the torch device to open a molten steel outlet of the ladle;
And a tension device connected to the oxygen torch pipe and capable of tensioning the oxygen torch pipe inside the torch device,
The tension device includes a tension spring connected to the oxygen torch pipe to elastically support the oxygen torch pipe, an angle sensor provided at the lower end of the oxygen torch pipe to sense tilting of the oxygen torch pipe, And a controller capable of controlling the motor operation of the open air in accordance with the detection signal of the angle detection sensor while being electrically connected. The method according to claim 1,
A rotating plate is fixed on a deck, and a connecting plate is formed on an upper portion of the rotating plate. A rotating plate is formed on an upper portion of the connecting plate. An inner side of the rotating plate is engaged with a motor, And a motor is mounted on an upper portion of the rotating plate to rotate the rotating assembly while the motor is driven to rotate the lifting assembly, the link means, and the torch assembly. And a cover is formed on the upper portion of the fixing plate, the connecting plate, the rotating plate, and the outside of the supporting plate. The method according to claim 1,
The elevating and lowering assembly includes a support which is coupled to the inside of the cover of the rotary assembly, a guide rail which is formed inside the support, a cylinder which is formed on the upper part of the rotary assembly, a guide bar which is connected to the cylinder, And a lifting and lowering member which is coupled to the guide rail and is moved up and down according to the driving of the cylinder. The method of claim 3,
Characterized in that the support rods are formed on both sides of the inner surface of the cover. The method of claim 3,
Wherein the guide rails are formed on both sides of the inner side of the support base. The method according to claim 1,
Wherein the link means comprises:
A first link connected to the lifting assembly by a cylinder;
A tilting member hingedly connected to the first link;
A second link connected to the tilting member by a hinge;
A first auxiliary link connected to a lower portion of the tilting member by a hinge and connected to the first link;
And a second auxiliary link connected to the second link by a hinge at a lower portion of the tilting member. The method according to claim 6,
Wherein the first gear and the second gear are engaged with each other, the first gear is connected to a hinge connected to the first link, and the second gear Is connected to a hinge connected to a second link and is composed of gears of larger diameter than the first gear. delete The method according to claim 1,
The torch device includes a cover connected to the link means, a fixing member coupled to the outside of the oxygen torch pipe so that the oxygen torch pipe can be fixed to the inside of the cover, and a fixing member connected to one side of the fixing torch, And a tight contact member to tightly fix the oxygen torch pipe without shaking. delete The method according to claim 1,
Wherein the oxygen torch pipe is charged with a groove of a safety guard provided on the deck so as to protect the oxygen torch pipe without interfering with the walking of the operator when the open air is not operated on the deck. Semi-automatic dog air.

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