JP2003262476A - Ladle repair carrier having punch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide equipment reducing a replacing work of a porous plug for a ladle and a burden imposed on an inside repair work and securing a safe work. <P>SOLUTION: This ladle repair carrier having a water cooling capsule 17 mounted in front of a carrier 1 is disposed with a punch for replacing the porous plug 20 provided in the bottom part 19 of the ladle in the water cooling capsule 17. This ladle repair carrier has the punch, which is provided with a boom 7 having its base part attached to a support frame mount 5 on the carrier 1 in the rear part outside the water cooling capsule 17 so as to rotationally move in the top/bottom/left/right and its tip part extending in the water cooling capsule 17 so as to rotationally move in the top/bottom/left/right, a vertically rotational horizontal guide 9 provided in the tip of the boom, a vertically rotational guide cell 12 attached from the boom 7 extending inside the water cooling capsule 17 to its side via a cell mounting 11, a hydraulic breaker 14 provided in the guide cell 12 and moving frontward by a hydraulic chain feed motor 13, and a punch rod 15 fed by the hydraulic breaker 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle repair truck for repairing refractories of a ladle, and more particularly, to a horizontal ladle for exchanging a porous plug for blowing a stirring gas at the bottom of the ladle which has been turned over. The present invention relates to a ladle repair cart equipped with a punching machine.

[0002]

2. Description of the Related Art Ladles for molten steel used in steelmaking processes are
As the usage time increases, various parts inside the ladle will be damaged, so it is necessary to repair them appropriately. In particular, in a ladle that blows stirring gas from the bottom of the ladle, such as a vacuum degassing ladle and a ladle refining furnace, the gas-blowing porous plug must be replaced with a new one every few uses. . In addition, refractory materials for casting nozzles and slag lines will need to be repaired. It takes a long time for these repair work to wait for the ladle to cool, so it is necessary to prepare an extra ladle for that, and at the time of reuse after repair, Have to reheat,
It is also very disadvantageous in terms of heat economy.

Therefore, except when it is unavoidable, repair is done while the ladle is hot, but the inside of the ladle immediately after use is 140
Since the temperature is as high as 0 ° C, it is difficult to repair it from the inside. Therefore, the replacement work of the porous plug is designed to be performed from the outside of the ladle, but the work from the outside alone does not work. It is often necessary to push out the porous plug with a long stick from the inside of the ladle to push it out.Furthermore, filling the joints when setting a new porous plug also gives sufficient work accuracy when working from the outside. Absent. For this reason, there is a risk that molten metal may leak from this portion, the life of the porous material may be shortened, and that molten steel may be stirred poorly due to defective gas injection.

Therefore, taking the above into consideration, the Japanese Utility Model Publication No. 63-40
The applicant is developing the device of No. 299. This device is
A trolley that travels on the rail and a front part of the trolley are provided with a repair work capsule that is attached to the front of the trolley so as to project at least as long as the depth of the ladle. Work openings are provided at appropriate positions. Further, the applicant discloses, as an improvement of the above-mentioned trolley, Japanese Patent Laid-Open No. 11-291024 discloses an invention in which a balance weight of a capsule is provided on a work trolley for safety.

[0005]

As described above, it is desirable that the ladle be repaired and reused in a high temperature state after use, but it is difficult for an operator to enter the ladle. The porous plug for blowing the stirring gas at the bottom of the ladle needs to be replaced by using it a couple of times. However, despite the development of the above work trolley, the replacement work must be done manually. Yes, it took manpower to replace the porous plug from the bottom of the ladle at high temperature. Therefore, the problem to be solved and used by the present invention is to provide a device that can reduce the load of these replacement works and can work safely.

[0006]

Means for Solving the Problems According to the invention of claim 1, in the invention of claim 1, in a ladle repair trolley in which a water cooling capsule is placed in front of the trolley, a porous plug is provided in the water cooling capsule. A ladle repair cart having a punching machine, which is characterized in that the punching machine of No. 1 is provided.

According to a second aspect of the invention, in the punching machine, a base is rotatably mounted vertically and horizontally on a support frame on a bogie outside the rear portion of the water-cooling capsule and extends into the water-cooling capsule to rotate the tip portion vertically and horizontally. A movable boom and a horizontally rotatable horizontal guide at the tip of the boom, a vertically rotatable guide cell mounted on the side of the boom from the boom extending into the water-cooled capsule via cell mounting, and the guide cell. 2. A ladle repairing trolley having a punching machine according to claim 1, characterized in that it comprises a hydraulic breaker which is provided and moves forward by a hydraulic chain feed motor, and a punching bar which is fed from the hydraulic breaker.

According to a third aspect of the present invention, the mechanism for rotatably rotating the boom, the horizontal guide and the guide cell is composed of hydraulic cylinders respectively arranged therein. It is a ladle repair cart.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view in which a ladle repair truck having a punching machine of the present invention is arranged on a ladle. FIG. 2 is a plan view of a ladle repair truck having the punching machine shown in FIG. FIG. 3 is a front view of a ladle repair truck having the punching machine shown in FIG. As shown in FIG. 1, a ladle repairing truck having a punching machine of the present invention comprises a truck 1, a water-cooled capsule 17 placed in front of the truck 1 and protruding forward, and a balance of placement on the rear end of the truck 1. It has a weight of 4. The trolley 1 can be moved back and forth on the rail 3 by means of wheels 2. The water-cooled capsule 17
In the water cooling mechanism, a water cooling jacket is provided around the capsule, but it is omitted in the drawing. A support frame 5 is provided outside the rear end of the water-cooled capsule 17 on the carriage 1, and the base of the boom 7 is rotatably attached to the support frame 5 on the pivot shaft.
Extends into the water-cooled capsule 17. A hydraulic cylinder 8 spaced apart below the base of the boom 7 and a hydraulic cylinder 21 spaced apart laterally from the base of the boom 7 are attached to the support frame 5 by pivots, respectively.
And one of the hydraulic cylinders 21 is pivotally attached to the boom 7. The boom 7 is rotated up and down by 30 ° by the hydraulic cylinder 8 as shown in FIG.
The boom 7 can be appropriately lowered downward as shown by an imaginary line below the inside of the inside 7, and is further rotated 10 ° to the left and 30 ° to the right by the hydraulic cylinder 21 as shown in FIG.

The tip of the boom 7 of the punching machine has a length reaching the middle of the ladle 18, and a horizontal guide 9 is always provided at the tip of the boom 7 in a horizontal direction parallel to the center line of the ladle 18 which is tilted sideways. It is attached rotatably up and down by 30 °. The vertical rotation of the horizontal guide 9 is performed by a hydraulic cylinder 10 provided between the boom 7 and the horizontal guide 9. Further, the tip of the horizontal guide 9 is rotatable left and right by a pivot, and is rotated by a hydraulic cylinder 22 shown in FIG. Boom 7 and horizontal guide 9 beyond it
A guide cell 12 is supported by a cell mounting 11. The guide cell 12 has a hydraulic breaker 14 provided along the guide cell which is moved back and forth by a hydraulic chain feed motor 13. A punching bar 15 is provided in front of the hydraulic breaker 14, and is installed on the ladle bottom portion 19 of the aimed ladle 18 as shown by a virtual line extending to the ladle bottom portion 19 side in FIG. The punching rod tip 16 is pushed onto the porous plug 20 by the forward movement of the hydraulic breaker 14. The operation of these mechanisms is performed by the operation buttons of the control box 6 provided on the carriage 1.

Since the ladle repair cart having the punching machine of the present invention has the above-mentioned mechanism, when it becomes necessary to replace the porous plug 20 by several times of use, or when it is necessary to repair the inside of the ladle. , The hot ladle 18 is laid down sideways without cooling, the water-cooled capsules 17 are conveyed and inserted into the hot ladle 18 by the trolley 1, and the hydraulic cylinders 20 are operated by the control box 6. Thus, the punching rod tip 16 of the punching machine loaded on the trolley 1 from the repair port 23 inside the water-cooled capsule 17 is aimed at the porous plug 20 at the bottom 19 of the ladle to be punched out to quickly replace the porous plug 20. To do.
Further, the porous plug 20 is punched from the inside through the repair port 23 inside the water-cooled capsule 17 to quickly perform repair such as spraying.

In the present invention, a working space is obtained inside the water-cooled capsule 17 by cooling the water-cooled capsule 17 mounted on the trolley 1. Repairing and punching is performed by providing a punching machine in the water-cooled capsule 17. Can be done very efficiently and quickly from the same place. When the porous plug 20 is manually replaced by two people in the related art, when the ladle repair cart having the punching machine is used, it can be carried out by one person.

[0013]

As described above, by using the ladle repair cart having the punching machine of the present invention, the replacement of the porous plug at the bottom of the hot ladle and the repair of the inside of the ladle can be performed very quickly. In addition, it is possible to prevent the metal in the ladle from being oxidized and to continue to melt steel, and to reduce the load of repairing the inside of the ladle and punching porous plugs, and work more safely. It has an unprecedented excellent effect.

[Brief description of drawings]

FIG. 1 is a side view showing a ladle repair cart having a punching machine according to the present invention, which is disposed on the ladle.

FIG. 2 is a plan view of a ladle repair truck having the punching machine shown in FIG.

FIG. 3 is a front view of a ladle repair truck having the punching machine shown in FIG.

[Explanation of symbols]

1 dolly Two wheels 3 rails 4 balance weight 5 Support frame 6 control box 7 boom 8 hydraulic cylinders 9 Horizontal guide 10 hydraulic cylinder 11 Cell mounting 12 guide cells 13 Hydraulic chain feed motor 14 Hydraulic breaker 15 punching rod 16 punching rod tip 17 water-cooled capsules 18 ladle 19 Ladle bottom 20 Porous plug 21 hydraulic cylinder 22 hydraulic cylinder 23 Repair mouth

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Claims (3)

[Claims] 1. A ladle repair cart having a punching machine, wherein a ladle repair cart having a water cooling capsule placed in front of the cart has a porous plug punching machine provided in the water cooling capsule. 2. A punching machine is a boom in which a base is attached to a support frame stand on a bogie outside a rear portion of a water cooling capsule so as to be vertically and horizontally rotatable, and extends into the water cooling capsule so that a tip portion is vertically and horizontally rotatable. And a horizontally rotatable guide at the tip of the boom, a vertically rotatable guide cell mounted on the side of the boom from a boom extending into the water-cooled capsule via cell mounting, and a hydraulic chain provided in the guide cell. 2. A ladle repair cart having a punching machine according to claim 1, comprising a hydraulic breaker that moves forward by a feed motor and a punching bar that is fed from the hydraulic breaker. 3. A ladle repair truck having a punching machine according to claim 2, wherein the mechanism for rotatably rotating the boom, the horizontal guide and the guide cell comprises hydraulic cylinders respectively arranged. .