JPH08224658A - Enclosing type ladle tilting device - Google Patents

Abstract

PURPOSE: To provide an enclosing type ladle tilting device profitable to improve the dust collecting effect of flue dust, etc., produced from a ladle at the time of tilting the ladle. CONSTITUTION: A house part 6 is the one enclosing the side part and the upper part of the ladle 2 held to a ladle holding part 30 in a tilting device 3. In the lower range of the house part 6, chutes 65 are arranged. The ladle 2 is tilted by driving a driving motor 36 in the condition of holding the ladle 2 to a ladle holding part 30 in the tilting device 3 and thus, slag in the ladle 2 can be discharged into a slag pan 19 from a discharging hole 66. The flue dust, etc., in the house part 6 is sucked toward a suction device 70 from a suction duct 7 by driving the suction device 70.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enclosure type ladle tilting device. The present invention can be used, for example, when disposing of ladle in a ladle.

[0002]

2. Description of the Related Art When discarding slag remaining in a ladle in a ladle or pouring the molten metal in the ladle into a mold, the slags protrude laterally to the sides of the ladle so as to face each other. While suspending a pair of protruding trunnions with the main winding hook of the overhead crane, the auxiliary winding of the crane is rolled up, whereby the ladle is tilted little by little, thereby gradually opening the top opening of the ladle. It is decided to tilt the ladle by bringing it closer to downward.

When the ladle is tilted as described above, a large amount of dust is generated from the ladle and slag is scattered around. This is not preferable in terms of work environment and safety. Therefore, conventionally, a dust collector having an inlet is installed near the position where the ladle is tilted to collect smoke and the like.

[0004]

However, in the above-mentioned device, the dust collection effect of smoke dust is not always sufficient due to the interference between the dust collecting device and the ceiling crane that suspends the ladle. The present invention has been made in view of the above situation, and a common problem is to tilt a ladle, which is advantageous for improving the dust collection effect of smoke dust and the like generated from the ladle when tilting the ladle. To provide a device.

[0005]

According to a first aspect of the present invention, there is provided an enclosure type ladle tilting device which tilts a base, a ladle holding portion which is installed on the base and holds a ladle, and a ladle holding portion. A house provided with a tilting device provided with a driving unit for causing the ladle to be laterally and upwardly surrounded by the tilting device and having a slag outlet facing the ladle below the ladle. And a suction duct having a distal end connected to the house and a proximal end connected to the dust collector.

According to a second aspect of the present invention, in the enclosure type ladle tilting device according to the first aspect, the drive unit has a drive unit main body disposed outside the house, and a drive force of the drive unit main body is held by the holding unit. It is characterized in that it is configured with a transmission unit for transmitting. The enclosure type ladle tilting device according to a third aspect is characterized in that, in the first aspect, a chute that is inclined so that a slag outlet becomes narrower as it goes downward is provided in a lower region of the house part. It is what

[0007]

According to the device of the first aspect,
When the ladle is held by the ladle holder of the tilting device, the ladle is tilted when the drive part of the tilting device is driven. As a result, the slag in the ladle is discarded from the slag port of the house part to a slag pot, or the molten metal in the ladle is poured from the slag port of the house part into a mold or the like. In this way, since the ladle can be tilted by the tilting device, it is possible to eliminate the work of tilting the ladle trunnion with the overhead crane, so that it is possible to combine the overhead crane with the ladle. It is possible to avoid interference with dust equipment,
The dust collection efficiency of smoke can be secured.

When the ladle is tilted in this way, smoke and the like are generated from the ladle and are scattered, but since the house portion surrounds the lateral side and the upper side of the ladle, these smoke and the like are not generated. Scattering outside the house is suppressed. Further, the dust and the like in the house portion is sucked into the dust collector through the suction duct. At this time, not only smoke dust but also hot air of the ladle accumulated in the house is sucked into the dust collector from the suction duct,
It is advantageous for preventing high temperature and overheating in the house.

According to the second aspect of the present invention, since the drive unit main body of the drive unit is arranged outside the house, the drive unit main body for generating the drive force for tilting the ladle is attached to the smoke dust. It is advantageous to protect from heat and air. Furthermore, since it is possible to maintain and inspect the drive unit body from outside the house,
It is also advantageous for maintenance of the drive unit main body. According to the apparatus of the third aspect, in the lower region of the house, the chute is provided so that the sludge outlet becomes narrower as it goes downward. Therefore, when discarding slag from the ladle, even if there is spillage, the slag falls along the chute and moves to the slag pot or the like. Therefore, it is possible to prevent the slag from being accumulated in the house or scattered around.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. The entire apparatus is shown in FIGS. In this example, the base 1 is a vertical column 1 that is erected on a concrete floor W.
0, a horizontal strut 12 fixed on the vertical strut 10, and a handrail 14 for protection. The space between the floor surface W and the horizontal pillar 12 is the first floor, while the horizontal pillar 12 constitutes a work floor surface 15 which is a floor surface of the second floor and allows the worker to walk.

In the slag discarding section 16, a carriage 18 can run along a guide rail 17 provided on the floor surface W. A trolley pan 19 is detachably installed on the dolly 18. The dolly 18 is a self-propelled type, and includes a traveling motor 18b and traveling wheels 18c. When the traveling motor 18b of the carriage 18 which is fed from the power supply cable 18a shown in FIG. 2 is driven, the traveling wheels 18c rotate and the carriage 18 travels along the guide rail 17 in the direction of arrow X1 in FIG.

The ladle 2 shown in FIG. 1 is for storing molten metal (generally, molten steel). As can be seen from FIG. 1, the ladle 2 is a molten metal having a container-shaped iron shell 20, a refractory layer 21 coated on the inner surface of the iron shell 20, and a molten metal inlet / outlet opening 22 formed of the refractory layer 21. A holding chamber 23, a pair of protruding trunnions 24 projecting from the iron skin 20 so as to face each other laterally, and a collar also called a stiffener formed below the trunnion 24. Locking part 25
It has and. The trunnion 24 has a circular cross section, and is locked by the hook 29 of the overhead crane 27, so that the ladle 2
It is for hanging.

In FIG. 1, a tilting device 3 tilts the ladle 2, and the latitudinal columns 1 of two bases 1 face each other.
Equipped to 2. The two tilting devices 3 are controlled by a controller (not shown) so as to be driven in synchronization. Tilt device 3
Is provided with a ladle holder 30 for mounting and holding the ladle 2. As can be understood from FIGS. 3 and 4, the ladle holder 30
Is a vertical beam portion 32 having a mounting portion 31 on which the collar-shaped locking portion 25 of the ladle 2 is placed, a horizontal beam portion 33 connected to a lower portion of the vertical beam portion 32, and a vertical beam portion connected to the horizontal beam portion 33. Oriented support beam 34
It has and.

The drive unit 35 of the tilting device 3 is the ladle holder 3
As shown in FIG. 3, a driving motor 36 with a speed reducer as a driving unit main body and a transmission for transmitting the driving force of the driving motor 36 to the ladle holding unit 30. And a section 40. The drive shaft 38 of the drive motor 36 is equipped with a drive gear 38. The transmission unit 40 includes an intermediate gear 41 that meshes with the drive gear 38, and a large gear 42 that meshes with the intermediate gear 41. The large gear 42 is coaxially provided so as to go around the outer peripheral portion of the cylindrical rotating body 43 once. Since the large gear 42 has a large number of teeth, it functions as a speed reducer that decelerates the rotation of the drive gear 38 and transmits it to the rotating body 43.

A cylindrical fixing portion 47 is fixed to the base 1. The rotating body 43 is fitted into the fixed portion 47 substantially coaxially, and is rotatable about an axis P2 of the shaft 43m. As can be understood from FIG. 4, a bearing 48 is interposed between the flange-shaped sliding portion 43c of the rotating body 43 and the sliding portion 47c of the fixed portion 47. Therefore, the rotation of the bearing 48 allows the rotation of the rotating body 43 in the directions of the arrows A1 and A2 to be good.

The rotating body 43 and the supporting beam portion 34 are integrally connected, and the rotating body 43 is indicated by an arrow A1 shown in FIG.
When rotating in the A2 direction, the support beam portions 34 integrally rotate in the same direction, and therefore the ladle 2 held by the ladle holding portion 30 also tilts in the same direction. As can be seen from FIG. 3, the tilting device 3 is equipped with a clamping device 5. The clamp device 5 is provided with a claw 50 that clamps and fixes the flange-shaped locking portion 25 of the ladle 2. When the claw 50 of the clamp device 5 clamps the ladle 2, the ladle 2 is fixed to the tilting device 3.

As can be understood from FIG. 1, the house portion 6 is installed in this embodiment. The house part 6 surrounds the lateral side and the upper part of the ladle 2 held by the ladle holding part 30 of the tilting device 3. Therefore, the house part 6 is a wall body 61 that surrounds the lateral side of the ladle 2 and forms a ladle accommodating chamber 60.
a lid 63 which includes a to 61d and further covers the upper side of the ladle 2, that is, closes the ladle entrance / exit 62 at the upper end of the house portion 6.
It has. The lid 63 has an arrow B1 shown in FIG.
The ladle entrance 62 of the house 6 can be opened and closed by moving in the B2 direction.

As shown in FIG. 1, a set of two chutes 65 is provided in the lower region of the house portion 6. The chute 65 is inclined so as to approach each other as it goes downward, and forms a slag port 66 for discharging slag from the house portion 6. The chute 65 and the waste port 66 are located below the ladle 2 held by the ladle holder 30, and the waste port 66 faces the ladle 2.

As shown in FIG. 1, the suction port 7s of the tip 7t of the suction duct 7 for sucking the inside of the house 6 is connected to the upper end region of the house 6. The base end 7r of the suction duct 7 is connected to a dust collector 70 such as a dust collector. Dust collector 70
When is activated, the air in the house portion 6 is sucked. In this embodiment, as shown in FIG. 5, the walls 61a, 6 of the house portion 6 are
The above-mentioned drive motor 36 is arranged outside 1b.

Now, the ladle 2 in which the molten metal has become empty needs to be tilted and the ladle removed from the ladle 2. In this case, the hook 29 of the overhead crane 27 is locked to the trunnion 24 of the ladle 2 in which the molten metal is empty, and the ladle 2 is suspended by the overhead crane 27. Then, as can be understood from FIG. 1, the lid 63 is moved in the direction of the arrow B1 to move the ladle entrance / exit 6
Open 2. Then, the overhead crane 27 is appropriately operated to be positioned above the house section 6.

In this state, the hook 29 of the overhead crane 27
Is lowered in the direction of the arrow Y1 and the ladle 2 is moved into the ladle accommodating chamber 60 of the house 6. Further, the collar-shaped engaging portion 25 of the ladle 2 that has entered the ladle accommodating chamber 60 of the house portion 6 is placed and held on the ladle holding portion 30 of the tilting device 3. Next, the hook 29 of the overhead crane 27 is lifted to remove the ladle 2 from the house portion 6, and the above-mentioned clamp device 5 is operated to fix the ladle 2 to the tilting device 3.

Further, the lid 63 is moved in the direction of the arrow B2 to close the ladle entrance / exit 62 of the house portion 6, and the ladle accommodating chamber 60 of the house portion 6 is substantially closed except for the slag opening 66. State. When the drive motor 36 of the tilting device 3 is driven in a state in which the trolley 18 on which the slag pot 19 is installed is arranged in the slag discarding unit 16, the ladle 2 slowly moves in the direction of arrow C1 shown in FIG. It rotates and tilts in the vertical direction. As a result, the slag remaining in the ladle 2 is discarded into the slag pot 19 from the slag outlet 66 of the house section 6. When a predetermined slag is discarded in the slag pot 19, the slag discarding process is terminated, and the carriage 18 is self-propelled along the guide rail 17 and leaves the slag discarding unit 16.

When the slag discarding process is completed, the lid 63
Is moved in the direction of arrow B2, and the ladle entrance / exit 6 of the house 6 is moved.
2 is opened, the hook 29 is moved into the house 6, and the trunnion 24 of the ladle 2 is connected to the hook 29 of the overhead crane 27.
, The ladle 2 is hung by the overhead crane 27, lifted in the direction of the arrow Y2 shown in FIG. 1, and taken out from the ladle inlet / outlet 62 of the house part 6.

As described above, in this embodiment, when the driving motor 36 is driven while the ladle 2 is held by the ladle holding portion 30 of the tilting device 3, the ladle 2 is tilted in the vertical direction. Then, the slag remaining in the ladle 2 can be discarded in the slag pan 19. Therefore, while suspending the ladle 2 with the overhead crane 27,
It is possible to abolish the work of discarding Noro in Noro pot 19. Therefore, the interference between the overhead crane 27 and the dust collecting hood, etc., which has occurred conventionally, can be avoided.

When the ladle 2 is tilted as described above, smoke and the like are generated from the ladle 2 and are scattered, but the house portion 6
Surrounds the lateral side and the upper side of the ladle 2, so that the dust and the like can be suppressed from scattering to the outside of the house portion 6. Further, since the dust collector 70 is operating, the house portion 6
Dust and the like inside is sucked from the suction duct 7 toward the dust collector 70 in the direction of arrow D1. Therefore, the dust collection efficiency can be increased more than ever before.

Not only smoke dust but also hot air radiated from the high temperature refractory layer 21 of the ladle 2 in the house 6 is sucked into the dust collector 70 from the suction duct 7, so that the high temperature in the house 6 is high. It is also advantageous in preventing aging and overheating. Therefore, it is advantageous for suppressing overheating of the work floor surface 15 or the like on which the worker walks, and is advantageous for maintaining the working environment. In particular, in this embodiment, as can be understood from FIG. 1, the suction duct 7 is connected to the upper part of the house part 6, and the slag outlet 66 is formed in the lower part of the house part 6.
Therefore, when the dust collector 70 operates and the air in the house 6 is sucked together with smoke and the like, the dust outlet 6 at the bottom of the house 6
6, the outside air is sucked into the house portion 6 in the direction of the arrow H1,
The outside air can easily go upwards. Therefore, the "chimney effect" or an effect similar thereto can be obtained, and the smoke dust, hot air, etc. in the house portion 6 can be effectively eliminated.

Further, according to the present embodiment, the drive motor 36 for generating the drive force for tilting the ladle 2 is arranged outside the house portion 6 as can be understood from FIG. This is advantageous in protecting the drive motor 36 from dust and hot air, and is also advantageous in protecting the drive motor 36 and its peripheral devices. Furthermore, since maintenance and inspection of the drive motor 36 can be performed from the outside of the house portion 6, maintenance of the drive motor 36 is also advantageous.

Further, according to this embodiment, at least two pairs of chutes 65 are provided in the lower area of the house 6 so that the slag outlet becomes narrower as it goes downward. Therefore, when discarding the slag from the ladle 2, even if there is a spill, the slag falls along the chute 65 and moves to the slag pot 19. Therefore, it is possible to suppress the accumulation in the house portion 6.

When the pot is washed, the ladle 2 is held by the ladle holder 30 and housed in the house 6, as in the case of discarding the ladle. In that state, as can be understood from FIG. 2, the oxygen pipe 80 is inserted into the work window 6x of the house portion 6 and the oxygen pipe 80 is connected to the rope 8 such as a chain or a wire.
The oxygen pipe 80 is manually suspended by the operator while observing the ladle 2 through the glass window or the like of the house portion 6 while suspending the oxygen pipe 80 with the suspending tool 82.
Is operated to blow out oxygen gas from the oxygen pipe 80 to clean unnecessary portions of the ladle 2. Although a large amount of dust and the like is generated even when washing the pot like this, since the house portion 6 surrounds the lateral side and the upper side of the ladle 2, these dust and the like are generated outside the house portion 6. Scattering is suppressed.

Further, if the dust collector 70 is operated during the pot washing, the dust and the like in the house 6 is sucked from the suction duct 7 toward the dust collector 70, so that the dust collecting efficiency can be improved. By the way, as can be understood from FIG. 6, when the trunnion 24 of the ladle 2 is suspended by the hook 29 of the overhead crane 27 and the ladle 2 is tilted, the ladle 2 is an extension line P1 of the trunnion 24.
The center of rotation of the ladle 2 is swung, and the distance between the center of gravity G1 of the ladle 2 and the extension line P1, that is, the turning radius R1.
Becomes larger and the rotation moment tends to increase.
In this case, it is disadvantageous to the inclination.

In this point, when tilting the ladle 2 in this embodiment, as can be understood from FIG. 6, the trunnion 2 of the ladle 2 is tilted.
The collar-shaped locking portion 25 located below 4 is held by the ladle holding portion 30 of the tilting device 3. Therefore, in the present embodiment, the ladle 2 does not rotate about the extension line P1 of the trunnion 24 as the center of rotation, but about the axis P2 of the drive unit 35. Therefore, the center of gravity G of the ladle 2 tilted
The distance between 1 and the axis P2, that is, the turning radius R2 can be reduced, and the rotational moment at the time of tilting can be reduced. Therefore, it is advantageous in smoothing the tilting of the ladle 2 and miniaturizing the drive motor 36.

(Supplementary Note) The following technical idea can be understood from the above-described embodiment. The device according to claim 3, further comprising a slag discarding unit in which a slag pot is installed below the chute. The device according to claim 1, wherein the tilting device is equipped with a clamping device for clamping the ladle.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an entire apparatus.

FIG. 2 is a configuration diagram of the entire apparatus viewed from different directions.

FIG. 3 is a plan view of the vicinity of a ladle holder and a drive unit.

FIG. 4 is a side view showing, in a partial cross section, the vicinity of the drive unit in a state in which the ladle is placed on the ladle holder of the tilting device.

FIG. 5 is a plan view showing a state in which the ladle is placed on the ladle holder of the tilting device.

FIG. 6 is a side view showing a state in which the ladle is placed on the ladle holding portion of the tilting device.

[Explanation of symbols]

In the figure, 1 is a base, 19 is a ladle, 2 is a ladle, 24 is a trunnion, 27 is an overhead crane, 3 is a tilting device, 30 is a molten metal holding unit, 35 is a driving unit, 36 is a driving motor, and 42 is Large gear, 43 is a rotating body, 6 is a house part, 60 is a ladle accommodating chamber, 61a to 61d are wall bodies, 63 is a lid body, 65 is a chute, 66 is a slag outlet, 7 is a suction duct, and 70 is a collecting body. Indicates a dust device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuji Ishizaki 1 Wano Wari, Arao-cho, Tokai City, Aichi Prefecture, Aichi Steel Co., Ltd. Sangyo Co., Ltd.

Claims (3)

[Claims] 1. A tilting device provided with a base, a ladle holding part which is installed on the base and holds a ladle, and a drive part which tilts the ladle holding part, and the tilting device. Enclose the sides and upper sides of the ladle to be tilted with, and the house part with a slag outlet facing the ladle below the ladle, and the tip is connected to the house part and the base end is gathered. An enclosure type ladle tilting device comprising a suction duct connected to a dust device. 2. The drive unit comprises a drive unit main body arranged outside the house, and a transmission unit for transmitting the drive force of the drive unit main body to the pan holding unit. The enclosure type ladle tilting device according to claim 1. 3. The enclosure type ladle tilting according to claim 1, wherein a chute is provided in a lower region of the house portion so that a slag outlet becomes narrower as it goes downward. apparatus.