JPH0810938A - Device for removing adhering matter to ladle - Google Patents

Abstract

PURPOSE:To efficiently and safely remove the slag or the metal adhered to a ladle. CONSTITUTION:A cylinder device 10 for elevation is extended downward, and an elevating post 11 is fixed to a piston rod 10a. A turning frame 15 to be turned by a motor is supported by the lower part of the elevating post 11. A shift truck is movably supported by the turning frame 15. An air breaker 19 is swayably and pivotably supported by the tip part of each shift truck. The breaker 19 is capable of oscillating by a cylinder device 20 for the oscillation. A body of a cylinder device for a blade is fixed to the turning center, and a blade 22 is fixed to the tip part of a piston rod 21a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to repairing a ladle used for handling molten metal and refining, and relates to a removing device for removing slag and metal attached to the inner wall of the ladle. Is.

[0002]

2. Description of the Related Art Ladles used for handling and refining molten metal are properly inspected and repaired after use. Then, the slag and the metal attached to the ladle are removed by an operator after confirming the adhering condition, and the ladle is carried to a deposit removing work place by using a heavy machine or the like.

Conventionally, the confirmation of the deposit by the operator is
The ladle is carried by an overhead crane to the work deck where the inspector is, and the inspector visually confirms it. Further, when the amount of adhering matter beyond the allowable level is confirmed, the ladle 40 is further moved to the adhering matter removing work place, and as shown in FIG. The ladle 40 is installed on the pan stand 43 by changing the above, and subsequently, the heavy equipment 41 such as an atlas is approached from the lateral direction to remove the deposit 42.

In FIG. 4, 44 is a heat insulating plate, and 45 is a heat insulating plate.
Indicates a working deck.

[0005]

However, in the conventional method for confirming and removing the deposit 42 as described above, the working deck 45 in which the ladle 40 is lifted and the inspector is used only for confirming the deposit 42. It is necessary to bring them closer to each other, and it requires a separate time and place for that. Also, the attached matter 4
2. Conventionally, since the removal work requires a large mechanical device 41 such as an atlas traveling on the ground, it is necessary to secure a removal work place (space) in which the large mechanical device 41 can be installed. It is necessary to move the ladle 40 to the removal work site and perform the removal work. This requires extra time.

The loss of time as described above leads to the occurrence of a heat loss due to a delay in the next scheduled steel receiving or a decrease in temperature in the pot. In addition, as a conventional removal device,
Generally, a ground machine 41 such as an atlas is often used, and in this case, only a worker who has a license for operating the ground machine 41 can perform the operation.

Further, although a worker who operates the removing device as described above is required, since repair work is not required every time, it is useless to make the worker resident at the removing work place, and conversely. If it is not made to be resident, a specific worker needs to move to the removal work place and operate every time the removal work occurs, and further, the removal work takes time. Conventionally, a dedicated machine such as described in Japanese Utility Model Laid-Open No. 62-29860 for speeding up the removal of slag has been considered, but the above problem has not been solved.

The present invention has been made in view of the above problems, and an object thereof is to efficiently and safely remove the slag and the ingot attached to the ladle.

[0009]

In order to achieve the above object, the apparatus for removing deposits on a ladle according to the present invention removes deposits such as metal and slag attached to the inner wall and the upper surface of the ladle. A kimono removing device, wherein an elevating body is disposed above a predetermined position on a flow line when the ladle is moved from the casting yard side to the converter yard side, an elevating means for elevating the elevating body, and the elevating body. Of the ladle, which is rotatably supported around the vertical axis and extends in the lateral direction, a swiveling means which is supported by the elevating body and drives the swivel frame to rotate, and a swivel frame which extends downward from the swivel frame to extend the ladle. And a cutting means capable of cutting deposits attached to the inner wall and the upper surface.

At this time, as described in claim 2, the cutting means comprises a blade supported by the revolving frame and extending downward, and a sliding means capable of sliding the blade along the revolving frame. It is characterized by being provided.
Alternatively, as described in claim 3, the cutting means includes an air breaker supported by a swivel frame and extending downward, a slide means capable of sliding the air breaker along the swivel frame, and the air breaker. And a swing means for swinging the head in the left-right direction.

Further, in any one of claims 1 to 3, as described in claim 4, a monitoring means is provided which is installed in the removal device main body or in the vicinity thereof and is capable of monitoring the downward direction. It is characterized by

[0012]

When the ladle which has been emptied by pouring molten steel into the mold is returned from the casting yard side to the converter yard side, when the ladle is moved to a position below the deposit removing device of the present invention, , Stop the trolley once. In this state, the mouth of the ladle is facing upward. As it is, the elevating means lowers the elevating body, and further the swivel frame is swung by a predetermined angle, whereby the cutting means is moved to the vicinity of the deposit on the upper surface or the inner surface of the ladle.

Subsequently, while advancing and lowering the elevating body or rotating the revolving frame, the adhering substances are scraped off by the cutting means. As the cutting means, for example, a blade extending in the vertical direction is used as described in claim 2. Since the adhering matter adhering to the inner surface of the ladle is fixed in a state of protruding from the inner surface, the blade is set to the height of the adhering material to be targeted by the elevating means, and the blade is swung by the turning means. Set to the lateral position of the attached matter, and further
The blade is moved toward the inner surface of the ladle by the sliding means until it comes close to the inner surface.

In this state, the blade abuts on the adhering material by turning the blade toward the target adhering material, and the adhering material is scraped off. In general, the deposits tend to adhere to the inner surface at the height position of the upper surface of the molten metal poured into the ladle, so that the adhered heights are often the same. In view of this, by rotating the blade with the rotating means and the rotating frame, the blade close to the inner surface of the ladle may be moved so as to rotate 360 degrees along the inner surface.

Further, as the cutting means, for example, an air breaker may be used as described in claim 3. Also in this case, the air breaker is moved up and down, the swivel frame is swung, and further slid toward the inner surface of the ladle to bring the air breaker closer to the adhered matter, and further, the swinging means is operated to move the tip of the air breaker. The chisel on the side is directed to the adhered matter, and in that state, the air breaker is operated to scrape off the adhered matter.

Further, by providing a monitoring device as described in claim 4, the condition of the adhered matter can be confirmed remotely without the worker approaching the ladle or bringing the ladle closer to the worker. In addition to the above, it is possible to remove the deposits attached to the ladle by operating the deposit removing device of the present invention by remote control. The deposit removing device of the present invention is not a device for breaking the refractory in order to replace or repair the refractory lined in the ladle, but is a device only for removing the deposit, so that it can be removed as described above. There is no problem even if the ladle is temporarily stopped on the pot flow line to carry out the work.

[0017]

An embodiment of the present invention will be described with reference to the drawings.
Inside the steelmaking factory, for example, the layout is as shown in FIG. And the ladle 9 placed on the steel receiving cart
Is movable by the steel receiving trolley, and after molten steel is injected from the converter 1a in the converter yard 1, the molten steel is conveyed to the casting yard 3 via the secondary refining yard 2 and melted in the mold. Add pouring water. The ladle 9 that has been cast and emptied moves toward the converter yard 1 side, and the above-described work is repeated.

In FIG. 3, 5 is a pot repair yard. Further, the arrow indicates the direction of the movement line 6 of the ladle 9. A flow line 6 which is a fixed route for moving the ladle 9 from the casting yard 3 toward the converter yard 1 side.
An adhering matter removing device according to the present invention is arranged at the position A in the middle of the upper part.

As shown in FIG. 1, in the deposit removing device, a lifting frame 8 is fixed to a beam 7 or the like of a factory. A cylinder device 10 which constitutes an elevating means is attached to the elevating frame 8. The ascending / descending cylinder device 10 extends downward, and the piston rod 10a can extend and contract downward. An elevating post 11 that constitutes an elevating body is fixed to the piston rod 10a with its axis facing up and down, and the elevating post 11 can move in the vertical direction as the piston rod 10a expands and contracts.

A motor 12 constituting a turning means is fixed to a lower side wall of the elevating post 11 and connected to a speed reducer 13, and a drive shaft of the speed reducer 13 extends in the vertical direction.
A swivel shaft 14 is coaxially supported by a lower portion of the elevating post 11 via a bearing and extends downward. An endless annular chain is attached between the drive shaft of the motor 12 and the gears 12a, 14a fixed to the swivel shaft 14 to enable chain transmission, and the rotational driving force of the motor 12 can be transmitted to the swivel shaft 14. Has become. Swivel axis 1
A swivel frame 15 that extends laterally symmetrically is fixed to the lower end of 4.

As shown in FIG. 2, the revolving frame 15 includes a revolving central portion 15a fixed to the revolving shaft 14 and left and right frame portions 15b extending symmetrically from the revolving central portion 15a in the left-right direction. Have The frame body portion 15b includes a pair of side frames 1 extending in parallel with each other with a predetermined interval in the width direction.
5c and left and right cross frames 15d that connect the left and right ends of the pair of side frames 15c in the width direction.

The left and right side frames 15c are each provided with a shift carriage 1 which constitutes a sliding means.
6 is movably supported. Each shift truck 16
Is supported by a guide rail 17 provided along the inner surface of the side frame 15c via wheels 18, and the wheels 18
By being driven to rotate, it is possible to move along the guide rail 17, that is, the side frame 15c.

With respect to the tip of each shift carriage 16,
An upper portion of the air breaker 19 is pivotally supported so as to be vertically swingable, and an upper portion of the air breaker 19 extends upward. On the upper surface of the shift carriage 16, a main body of a swinging cylinder device 20 that constitutes swinging means is pivotally supported in a vertically swingable manner, and a tip end portion of a piston rod 20a of the swinging cylinder device 20 is supported. Is the air breaker 19
It is attached to the upper end of the. As a result, by driving the swinging cylinder device 20, the air breaker 19 is capable of swinging in the left-right direction centering on the shaft support portion of the shift carriage 16.

Further, the cylinder device 2 for moving the shift carriage 16 constituting the slide means to the turning central portion 15a.
The main body of No. 1 is fixed, and its axis extends parallel to the side frame 15c. The tip end portion of the piston rod 21 a of the shift carriage moving cylinder device 21 is connected to the shift carriage 16. This blade 22 is a breaker 19
It is used instead of and works in the same way as 19.

A column member 24 extends downward from the elevating frame 8 and an inspection floor 25 is fixed to the lower portion of the column member 24. An emergency lifting device 26 including a winch is fixed to the inspection floor 25. The wire 27 wound around the emergency elevating device 26 extends upward and winds around a pulley 28 fixed to the elevating frame 8 and extends downward via the pulley 28. The tip of the wire 27 is fixed to the upper end of the elevating post 11. Then, normally, the wire 27 moves following the movement of the elevating post 11, but when the movement of the elevating post 11 at a predetermined speed, that is, the movement of the wire 27 is detected, it is determined to be abnormal, and the elevating post 11 is detected. 11 is supported via a wire 27 so that the elevating post 11 can be prevented from dropping and the emergency elevating device 26 can lift the elevating post 11 in an emergency.

Further, a guide column 29 extends downward from the inspection floor 25, and the guide column 29 regulates the vertically moving elevator post 11 so that it can move only in the vertical direction. . In addition, in FIG. 1, 32 is a figure which shows the arrangement position of a heat insulating board. In a factory equipped with the deposit 30 removing device having the above-described configuration, the ladle 9 that has been emptied by casting the molten metal is moved along the return flow line 6.

Then, when the adhering material 30 removing device is moved downward, the empty pan truck on which the ladle 9 is placed is once stopped to check the condition of the adhering material 30 in the ladle 9 and on the upper surface.
If the adhered matter 30 is below the allowable value, it is passed through the ladle 9 as it is, but if the adhered matter is above the allowable value, the removing device 30 is operated to perform the removing work.

The removal work is performed by the lifting cylinder device 10.
Is driven to move the elevating post 11 downward while being guided by the guide columns 29, and the swivel frame 15 is brought close to the upper end surface of the ladle 9. At this time, each shift carriage 16
The blade 22 and the air breaker 19 are moved so as not to come into contact with the ladle 9 by moving the lathe 9 to the turning shaft 14 side. Further, the elevating post 11 is set in advance so as to be located at the center of the ladle 9. Next, when the attached matter 30 is small, the motor 12 is moved so that the blade 22 side approaches the vicinity of the attached matter 30. It is driven to rotate the revolving frame 15 by a predetermined angle.

Next, the cylinder device 21 for the blade 22 is driven to bring the blade 22 close to the inner surface of the ladle 9. In this state, when the swivel frame 15 is swung again toward the deposit 30, the blade 22 moves along the inner surface of the ladle 9 and the blade of the blade 22 scrapes off the deposit 30 from the inner surface of the ladle 9. Be done. Alternatively, the motor 12 is driven and the revolving frame 15 is revolved so that the breaker side approaches the vicinity of the deposit 30.

Next, the shift carriage 16 is slid toward the inner surface of the ladle 9 and the swinging cylinder device 20 is operated to direct the chisel forming the tip of the air breaker 19 toward the deposit 30. In this state, the air breaker 19 is operated to scrape off the adhered portion. As described above, the slag and metal attached to the inner surface and the upper surface of the ladle 9 are sequentially scraped off using the blade 22 or the air breaker.

When the scraping off of the deposit 30 is completed, the lifting cylinder device 10 is driven to raise the lifting post 11 and the removal device is retracted to the ceiling side. Next, the stopped steel receiving cart is moved to move the ladle 9 to the pot repair yard, where the ladle 9 is tilted and scraped off to remove the deposits 30 accumulated on the bottom. Discharge from inside the pan 9.

The inspected floor 25 is inspected by an inspector to confirm the deposit 30 in the ladle 9.
The removing device may be operated by the operation panel installed at. Alternatively, an ITV camera 31 is installed as a monitoring means on the inspection floor 25, and the deposits 3 in the ladle 9 are remotely located.
The condition of 0 is checked, or the removing device is operated from a remote position according to the information from the camera 31 to remove the deposit 30.

As described above, in the present embodiment, the deposit 30 can be confirmed and the deposit 30 can be confirmed without stopping the ladle 9 once during the movement route of the ladle 9 and moving the ladle 9 to another place. The work of removing the kimono 30 is performed. Therefore, it is not necessary to separately move the ladle 9 for checking and removing the adhering substances 30, and the working time is shortened as compared with the conventional case.

When ITV is used as described above,
Since the deposit 30 removing device can be remotely operated, it can be performed in parallel with other work, which improves efficiency. Also,
Since it is not a ground machine such as an atlas, a driver's license is not required and it is not necessary to secure a space for installing the ground machine as in the conventional case.

[0035]

As described above, in the ladle adhering matter removing device of the present invention, it is not necessary to move the ladle to another place only for confirming and removing the adhering matter.
There is an effect that the work time required for the confirmation and removal work of the attached matter is shortened as compared with the conventional case, and the work delay due to the ladle can be suppressed and the heat loss due to the temperature decrease of the ladle can be suppressed.

Moreover, since the conventional ground machine for removal is unnecessary, it is not necessary to secure a working place for the ground machine, and the removal device can be operated even by a worker without a driving license. Then, the adhered matter can be removed. By adopting the configuration as described in claim 2 as the cutting means for removing the adhering matter, the adhering matter can be removed by moving the blade along the inner peripheral surface of the ladle. .

Further, by adopting the structure as described in claim 3, it becomes possible to cut even if the attached matter is larger than a predetermined size. Further, with the configuration according to the fourth aspect, it is possible to remotely perform the confirmation work and the removal work of the adhering matter, and the work can be performed in parallel with other work.

[Brief description of drawings]

FIG. 1 is a side view showing an adhering matter removing device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a swivel frame of an embodiment according to the present invention and a device attached to the swivel frame.

FIG. 3 is a schematic layout of a factory according to an embodiment of the present invention.

FIG. 4 is a conceptual diagram showing a conventional removing operation.

[Explanation of symbols]

 8 Elevating Frame 9 Ladle 10 Elevating Cylinder Device 11 Elevating Post 12 Motor 14 Swivel Axis 15 Slewing Frame 16 Shift Carriage 19 Air Breaker 20 Swing Cylinder Device 21 Shift Cylinder Moving Cylinder Device 22 Blade 30 Attached Material 31 Camera

Claims (4)

[Claims] Claim: What is claimed is: 1. A deposit removing device for removing deposits such as metal and slag attached to the inner wall and upper surface of a ladle, which is used when moving the ladle from the casting yard side to the converter yard side. An elevating body arranged above a predetermined position on the line, elevating means for elevating the elevating body, a swing frame rotatably supported around a vertical axis with respect to a lower portion of the elevating body and extending in a lateral direction; Swivel means for rotating the swivel frame supported by the lifting body, and cutting means extending downward from the swivel frame and capable of cutting deposits adhering to the inner wall and upper surface of the ladle,
An apparatus for removing foreign matter from a ladle, which is characterized in that: 2. The cutting means comprises a blade supported by a swivel frame and extending downward, and a slide means capable of sliding the blade laterally along the swivel frame. The deposit removing device for the ladle described in 1. 3. The cutting means includes an air breaker supported by a swivel frame and extending downward, a slide means capable of sliding the air breaker laterally along the swivel frame, and a neck of the air breaker in the left-right direction. 2. A device for removing deposits on a ladle according to claim 1, further comprising a swinging means for performing a swinging motion. 4. The ladle according to any one of claims 1 to 3, further comprising a monitoring means which is installed in the main body of the removing device or in the vicinity thereof and is capable of monitoring the downward direction. Kimono removal device.