JPH09164456A - Device used both for ladle turret and mold assembly changing and method for changing mold assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold assembly changing device, in which the equipment costs of an overhead crane and a building are reduced and the changing work is easily executed in a short time at the time of changing the mold assembly, and a changing method thereof, in a continuous casting plant composed of a casting ridge arranged with the overhead crane and a continuous casting equipment and in the adjacent to this ridge, a maintenance ridge arranged with the overheat crane and the maintenance shop is arranged. SOLUTION: A column 10 is erected on a swing table 9 arranged near the continuous casting equipment 2 and the tip parts of one pair of supporting arms are supported by this column through a pin so as to be independently and vertically swingable in the same axis. Further, elevating/lowering levers 16a, 16b of elevating/lowering devices 15a, 15b are connected to the intermediate parts of the one pair of the supporting arms, respectively and holding tables 17a, 17b are connected with the tip parts of one pair of the supporting arms so as to be supportable to the horizontal direction, respectively. Mold assembly suspending tables 22 are arranged freely fittable/ separatable and engagable with this holding tables 17a, 17b to be used in the device for both of a ladle turret and a mold assembly changing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle turret / mold assembly changing device used in continuous casting equipment and a method of changing a mold assembly using the ladle turret / mold assembly changing device.

[0002]

2. Description of the Related Art Conventionally, continuous casting equipment used in continuous casting of steel, aluminum and copper is designed to conceptually remove molten metal s melted in a melting furnace such as a converter as shown in FIG. From the pot a and the tundish b, through the immersion nozzle c, it is poured into a mold e having a cooling structure d and provided with a vibration device (not shown), and is cooled and solidified by this mold to obtain a slab s
c has a structure in which it is supported and carried out through a slab support structure composed of a support roll r disposed below the mold and a plurality of guide rolls gr, and the melt is supplied to a tundish b which supplies the melt s to the mold e. In order to ensure continuous operation by replenishing s continuously, recently, for example, JP-A-62-500 has been used.
As described in Japanese Patent No. 58, this tundish b
When the molten metal in the ladle a supplying the molten metal s is exhausted, it can be easily replaced with a ladle containing the molten metal.
For example, there is used a swivel ladle turret capable of swiveling and ascending and descending by grasping a ladle between a continuous casting facility and a ladle carrier.

By the way, a continuous casting mold assembly (referred to as a batch exchange type stand including a mold and a support roll, hereinafter referred to as a "mold assembly") in this continuous casting facility is used when the size to be cast is changed and when the wear progresses. Needs replacement.

For this reason, in general, a maintenance building (melting building) is installed next to the casting building in which the continuous casting equipment is installed as described above, and an overhead crane is installed in each building. At the same time, an inter-building carrier path connecting the two buildings is provided, and when the mold assembly is replaced, the handling is performed by using an overhead crane and an inter-building carriage of each building.

For example, in the case of a large slab continuous casting machine in which the weight of the ladle containing the molten metal is about 350 tons at maximum,
The weight of the mold assembly is also considerably large, about 170 tons at maximum, and in order to suspend and move it, it is necessary to dispose an overhead crane having a large maximum load load also in the casting building. Therefore, it is necessary that the garter, the building, and the foundation have a structure capable of withstanding a heavy load, which causes a problem of increasing equipment costs.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a mold in a continuous casting plant in which an overhead crane and a maintenance building with a maintenance area are provided next to a casting building with an overhead crane and continuous casting equipment. When exchanging the assembly, the maximum handling load in the casting building is suppressed, and in the above example, it can be carried out by using a small capacity overhead crane of about 60 tons, which can reduce the equipment cost of the overhead crane and the building. An exchange device and a method of exchanging a mold assembly using the exchange device are provided.

[0007]

Means for Solving the Problems A first invention of the present invention is:
A column is erected on a swivel table arranged close to the continuous casting facility, and the tips of a pair of support arms are coaxially and vertically rotatably supported by a pin on the column, and the pair of The lifting rods of the lifting device are connected to the middle portions of the support arms, and the gripping bases are horizontally supported to the tips of the pair of support arms, respectively, and the mold assembly suspension base is detachably attached to the gripping bases. The gist is a ladle turret and mold assembly exchange device, which is characterized by being made compatible.

According to a second aspect of the present invention, in the first aspect of the present invention, the pair of support arms is formed of a pair of main support arms and a pair of sub support arms, and the gripping table is supported at two points above and below to stabilize the horizontal support. The pair of support arms are formed by a pair of main support arms and a pair of sub-support arms, and the pair of main support arms and the pair of sub-support arms are coaxial with each other and are vertically independent. The support points are rotatably supported, and the support points are arranged such that the center of rotation of the pair of main support arms and the center of rotation of the pair of sub-support arms are located above and below on the same vertical line in the vertical direction. An elevating rod of an elevating device is connected to an arm intermediate portion of either one of the main support arm and the pair of sub-support arms, and a gripping table is horizontally attached to the tips of the pair of main support arms and the pair of sub-support arms. support Characterized in that it is connected to power.

A third invention is a continuous casting factory in which an overhead crane and a maintenance area are installed in the first building, and an overhead crane and continuous casting equipment are installed in a second building adjacent to the first building.
The ladle turret / mold assembly changing device according to claim 1 or 2 is arranged between the first building and the second building, and the gripping stand is operated by the vertical movement of the support arm by the elevating device and the turning movement of the swivel base. Between the first building and the second building, and when replacing the mold assembly, engage the mold assembly suspension base with the gripping base in advance and transfer it from the servicing area of the first building by an overhead crane. After suspending the mold assembly with the suspension tool of the suspension base of one gripping table, and suspending and removing the used mold assembly of the continuous casting equipment with the suspension tool of the suspension platform of the other gripping table. , The swivel base was swung to move to the first building, and at the same time, the mold assembly that had been maintained by the suspending tool of the suspension table of the other gripping table was moved to the continuous casting facility and installed, and moved to the first building. Replace the used mold assembly with a ceiling clamp. And gist how to replace the mold assembly, characterized in that for conveying the first building servicing field by emissions.

In a fourth aspect of the present invention, an overhead crane and a maintenance area are provided in the first building, and an overhead crane and continuous casting equipment are provided in the second building adjacent to the first building. In a continuous casting factory in which a track is laid between two ridges so that an inter-building truck can run, the installation according to claim 1 or 2 between the track of the inter-building truck and the continuous casting equipment. A pan turret and mold assembly replacement device is installed, and the vertical movement of the support arm by the lifting device and the swing motion of the swivel base allow
The gripping base is made movable between the continuous casting equipment and the inter-building trolley, and when replacing the mold assembly, engage the mold assembly suspension base with the gripping base in advance and install the prepared mold assembly from the maintenance area of the first building. It is loaded on the inter-building trolley by an overhead crane, transported to a predetermined position in the second ridge, and suspended by the suspension tool of the suspension platform of one gripping platform and the suspension platform of the other gripping platform. After suspending and removing the used mold assembly from the continuous casting equipment with a tool, swivel the swivel base to load it on the inter-building carriage, and at the same time, mount it on the inter-building carriage with the suspension tool on the suspension base of the other gripping base. Characterized by moving the assembled mold assembly of No. 1 to the continuous casting facility and incorporating it, and the used mold assembly loaded on the inter-building carriage is transported to the first building by the inter-building carriage and to the maintenance area by the overhead crane. Is required to replace the mold assembly. To.

In the first invention of the present invention, Japanese Patent Laid-Open No. 62-5 is used.
A ladle turret known in Japanese Patent No. 0058, which is constructed by performing a minor modification to dispose a suspension table provided with a detachable suspension tool capable of suspending a mold assembly on a ladle support table. In addition to having a function as a ladle turret and a function as a mold assembly changing device, it can be used as a changing device for a ladle and a mold assembly, reducing equipment costs. In addition, the workability of replacement can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, a pair of support arms for horizontally supporting a holding table for holding a ladle or a mold assembly is formed by a pair of main support arms and a pair of auxiliary support arms. However, the gripping table is horizontally supported at two points, and this horizontal support can be made more stable and reliable.

In the first invention or the second invention, the pair of support arms and the elevating device connected to the pair of support arms may be arranged in one set on one side of the supporting column, but one set ensures strength and stability. When the support is uncertain, a pair of support arms and another lifting device connected to the support arms may be symmetrically arranged with the support column interposed therebetween. In this case, for example, in the second aspect of the invention, the gripping bases are respectively supported at two points in the horizontal direction and two points in the vertical direction, that is, a total of four points.

The pair of main support arms and the pair of sub support arms are supported by the same support shaft, but the pair of main support arms and the pair of sub support arms are independent of each other. It is rotatably supported, and the lapping or suspending operation of the ladle or the mold assembly on each side can be made independent so that the timing of the work can be made flexible.

A third aspect of the present invention is a method for exchanging a mold assembly using the first or second aspect of the present invention, in which a mold assembly suspending tool is detachably engaged with a gripping stand of an existing ladle turret. It is possible to suppress the maximum load of the overhead crane in the second building where the continuous casting equipment is installed to a small capacity by taking into consideration the handling of things other than the mold assembly without expanding the capacity simply by modifying it. The arrangement of inter-building carriages in the first and second buildings can be omitted, the facility cost can be significantly reduced, and the mold assembly can be replaced easily and in a short time.

A fourth aspect of the present invention is a mold assembly replacement method using the first aspect or the second aspect of the present invention, in which an existing ladle turret is finely modified so as to detachably mount a mold assembly suspension tool. It is possible to reduce the maximum loading capacity of the overhead crane in the second wing where the continuous casting equipment is installed to a small capacity by taking into consideration the handling of things other than the mold assembly without increasing the capacity. It can be reduced significantly.

The present invention is, in addition to a fixed mold type continuous casting equipment for casting steel, stainless steel, copper, aluminum, etc., a thin belt continuous casting equipment such as a twin belt type continuous casting equipment and a twin drum type continuous casting equipment. It can also be applied to equipment.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An example of the structure of a ladle turret / mold assembly changing device according to the first aspect of the present invention will be described below with reference to FIG. This mold assembly exchanging device 1 uses a drive device 4 to drive gears 5, 6,
A swivel base 9 that can swivel around a swivel axis 8 via
A column 10 that is erected on the swivel base; a pair of main support arms 12a and 12b that are coaxially and rotatably supported by the column via a support shaft 11; A pair of sub-support arms 14 coaxially and independently rotatably supported via a support shaft 13 immediately below the same vertical line of the shaft 11.
a and 14b, and lifting devices 15a and 15b in which lifting rods 16a and 16b are connected to the intermediate portions of the pair of main support arms.
A pair of main support arms 12a and 12b and a pair of auxiliary support arms 14a and 14b, and gripping stands 17a and 17b horizontally supported by spindles 18 and 19 at the distal ends thereof, respectively.
A suspension beam 21 is suspended via a hook 20, and is configured by a suspension base 22 or the like that can be detachably engaged with the gripping bases 17a and 17b.

Reference numeral 26 is for engaging with the suspending tool 27 of the casting mold assembly 2Ab of the continuous casting equipment 2 when the casting mold assembly 2Ab of the continuous casting equipment 2 is suspended by a small hook attached to the suspension beam 21.

The suspension table 22 is a half-moon shaped plate,
The peripheral end portion is locked along the upper surface of the ladle receiving portion 23 of the gripping bases 17a and 17b. In this case, an insertion hole 24 is provided on the upper surface of the ladle receiving portion 23, and a locking pin 25 is inserted into the insertion hole 24 to lock and fix the suspension base so that it does not move horizontally.

With such a structure, the swivel base 9 is swung by the driving device 4 and the lifting device 1 is used.
5a and 15b rotate and move the pair of main support arms 14a and 14b through the lifting rods 16a and 16b around the support shaft 11 as a fulcrum, and gripping stands 17a and 17b connected to the tips of the pair of support arms. While maintaining the horizontal state, the continuous casting facility 2 in the second building B and the temporary storage space 3 in the first building A 3
The gripping table 17 can be moved (positions can be replaced), and during this period, by combining the overhead crane of each building and the work of attaching and detaching the mold assembly to and from the gripping tables 17a, 17b (suspension table 22) by the operator, At the same time as suspending and removing the mold assembly 2Ab from the continuous casting facility 2 in the second building B and turning to the temporary storage space 3 in the first building A,
The prepared mold assembly 2Aa in the temporary storage space 3 of the first building A can be suspended and swung to be installed in the continuous casting facility 2 of the second building B.

In order to replace the mold assemblies 2Aa and 2Ab, after the continuous casting operation is completed (interrupted), the ladle of the holding table 17 is removed by an overhead crane and an operator, and the suspension table 22 for the holding table 17 is removed. It is performed after the engagement work of.

The structure of the mold assembly exchanging device according to the first aspect of the present invention is such that the existing ladle turret has a ladle cradle with minor modifications, and the hook 20, the suspension beam 21,
By preparing a simple suspension base 22 composed of the small hooks 26 and attaching and detaching the suspension base 22 to and from the gripping bases 17a and 17b, it is possible to easily function as a ladle turret / mold assembly changing device.

When the ladle turret / mold assembly changing device 1 of the present invention is made to function as a ladle turret, the suspension platform 22 engaged with the upper surface of the ladle receiving portion 23 is used as an overhead crane or an operator. Therefore, it can be easily operated as a device for exchanging the ladle turret and the mold assembly.

Like the conventional ladle turret, the ladle turret / mold assembly changing device 1 of the present invention having the above-described structure is provided with a take-out place and a maintenance place for a ladle of a melting furnace such as a converter. , The first building A equipped with an overhead crane,
When the second building B equipped with an overhead crane in which the continuous casting equipment 2 is arranged is adjacent, as described above, it is arranged between the continuous casting equipment 2 of the second building B and the first building A. By
Handling for ladle exchange between the smelting furnace and the continuous casting equipment and exchange of the mold assembly between the maintenance shop and the continuous casting equipment can be easily performed.

FIG. 3 shows an arrangement example of the ladle turret / mold assembly changing device 1 and the equipment layout of a continuous casting factory when the third invention of the present invention is carried out.
In FIG. 3, A is a first building equipped with an overhead crane 28 having a maximum load of 350 tons, in which a steel ladle take-out place from a converter 29 for producing molten steel and a mold assembly maintenance site 30 are provided. It is arranged.

B is a second building equipped with an overhead crane 32 having a maximum load of 60 tons, in which fixed mold type slab continuous casting equipment 2 and its related equipment are installed.
Further, between the first building A and the second building B, the ladle turret / mold assembly changing device 1 of the present invention shown in FIG. 1 is arranged.

In the first building A, the ladle 31a containing the molten steel from the converter 29 is suspended by using the overhead crane 28 during the continuous casting operation, and one of the ladle turret / mold assembly changing device 1 is installed. An operation is carried out in which the empty ladle 31b loaded from the second building B by the ladle turret and mold assembly exchanging device 1 is suspended from the second building B, and is suspended and transferred to the bottom of the converter 29.

When replacing the mold assembly after completion (interruption) of continuous casting, an overhead crane 28 is used.
The mold assembly 2Aa that has been maintained in the maintenance area is used to hold the mold assembly 2Aa on one side of the ladle turret / mold assembly changing device 1
A mold assembly (batch exchange stand including the mold and support rolls) which was loaded from the second building B and swung by the ladle turret and mold assembly exchange device 1.
The operation of suspending the 2Ab and transporting it to the maintenance area 30 is performed.

In the first building A, the ladle 31 containing molten steel from the converter 29 is used as the ladle turret / mold assembly changing device 1
In this example, a large-capacity overhead crane 28 having a maximum loading capacity of 350 tons is provided because it is necessary to load it on one of the gripping stands 17a.

On the other hand, in the second building B, the ladle 31a containing molten steel is swung from the first building A by the ladle turret / mold assembly changing device 1 during the continuous casting operation,
The work of placing on the continuous casting facility 2 is performed.

When replacing the mold assembly after completion (interruption) of the continuous casting, the mold assembly 2Ab of the continuous casting equipment 2 is carried out to the first building A by the mold assembly replacement device which also functions as a ladle turret. The assembled mold assembly (collective exchange stand including the mold and the support roll) 2Aa is loaded from A and incorporated into the continuous casting facility 2.

In this example, since the ladle or the mold assembly is carried in and out by the ladle turret and mold assembly exchanging device 1 having a maximum payload of 350 tons or more, the maximum payload of the overhead crane 2 in the second building B is It depends on the weight of the tundish 33, but 60 tons is sufficient.

As a result, the overhead crane 32 can reduce the carrying load from 170 tons to 60 tons, which can reduce the equipment costs of the overhead crane 32 and the second building. In addition, the inter-building carriage for moving the mold assembly between the first building and the second building can be reduced,
As a whole, a significant reduction in equipment costs can be realized.

The method for performing the replacement work of the mold assembly will be described in detail below. The ladle turret / mold assembly replacement device 1 used here also has a function as a ladle turret, but here, the description of the ladle replacement work is omitted, and only the mold assembly replacement work is described.

When replacing the mold assembly, after the continuous casting is completed (interrupted), the ladle turret and the ceiling crane 28 of the first building are used to remove the ladle from the ladle turret and then In order to make the ladle turret function as a ladle turret and mold assembly exchange device using the overhead cranes 28 and 32 of the ridge A and the second ridge B, the suspension bases 22 are mounted on the gripping bases 17a and 17b on both sides. Place and lock.

Next, the small hooks 26 of the suspension table 22 of the gripping table 17b on the second ridge B side are engaged with the suspension ring 27 of the used mold assembly 2Ab of the continuous casting facility 2 to suspend it. Temporary storage area 3 transported from maintenance area 30 on the second building side
2Aa, a servicing mold assembly temporarily placed in
The small hook 26 of the suspension stand 22 is engaged with and suspended, and the ascending / descending operation by the elevating devices 15a and 15b and the swivel operation of the swivel stand 9 are made to cooperate with each other, and the used mold assembly from the second ridge B side is used. 2Ab is transferred to the temporary storage space 3 on the side of the first building A, and the prepared mold assembly 2Aa from the side of the first building A is installed.
Is transferred to the continuous casting equipment 2 in the second building B and incorporated into the continuous casting equipment.

At the same time, the used mold assembly 2Ab transferred from the second building B side on the temporary storage area 3 of the first building A is suspended by the overhead crane 28 and transported from the temporary storage area 3 to the maintenance area 30. Thus, the replacement work of the mold assembly is completed.

After the completion of the mold assembly replacement work, the suspension cranes are removed from the respective gripping stands by using the overhead cranes of the respective buildings, and the suspensions are transported to a predetermined storage space in each building. Then, it is put into a state where it is used as a ladle turret and kept waiting.

FIG. 4 shows an embodiment of the fourth invention of the present invention, in which a twin drum type continuous casting facility and a ladle turret / mold assembly changing device 1 as shown in FIGS. 1 and 2 are provided. Installed in an existing second building B with a maximum payload of 20 tons, the maximum payload 11 adjacent to this second building B
In the existing first building equipped with a 0-ton overhead crane 28, a steel ladle unloading station from the converter 29 and a maintenance area 30 are provided, and an inter-building track is provided between the first building A and the second building B. 34 is laid and an inter-building carriage 35 is arranged on this track.

In this embodiment, since the first building A is equipped with the overhead crane 28 having a maximum load capacity of 110 tons, the total weight of the mold assembly having a total weight of 50 tons and the molten steel is 110 tons. You can carry the pot,
In the existing second building B equipped with an overhead crane with a maximum payload of 20 tons, a mold assembly with a total weight of 50 tons and a ladle with a total weight of 110 tons containing molten steel are exchanged using this overhead crane 32. You cannot do it.

In this embodiment, an overhead crane 28 having a maximum payload of 110 tons, which is the same as in the first building A, is installed in the second building B.
Although it may be installed in the second building B as well, it requires extensive remodeling work such as replacement of the overhead crane, building, and strengthening of foundation strength.
Based on the assumption that the maximum loading capacity of 20 tons, the mold assembly with a total weight of 50 tons and the ladle with a total weight of 110 tons containing molten steel can be transported in the second building. The assembly exchanging device 1 is adopted, and the assembly exchanging device 1 is installed between the continuous casting equipment 2 of the second building B and the inter-building track 34, and using the overhead cranes 28, 32 and the inter-building carriage 35 of each building, It enables replacement work of the ladle and mold assembly containing molten steel.

The ladle turret / mold assembly changing device 1 used here has the same basic structure as that shown in FIGS. However, the openings 0a and 0b in the horizontal direction of the gripping stands 17a and 17b are formed so as to face each other in the direction in which the inter-building carriage 35 carries in the second building B.
(In FIG. 1 and FIG. 2, the openings 0a and 0b are formed outward respectively)

As another heavy-weight equipment element, there is a tundish, but the total weight of the tundish required in this type of continuous casting equipment is 20 tons or less, and the maximum loading load is 20 tons. An overhead crane is sufficient.

In this embodiment, the ladle turret is simply remodeled to detachably mount the mold assembly suspension, and the ladle and mold assembly can be replaced without expanding the capacity. It can be easily realized, and the maximum load of the overhead crane 32 to be installed in the second building B can be suppressed to 20 tons or less even in consideration of handling other than the mold assembly.
Since the overhead crane can be implemented without any modification, the facility cost can be reduced significantly.

The method of performing the work of replacing the mold assembly will be described in detail below. The ladle turret / mold assembly replacement device 1 used here also has a function as a ladle turret, but here, the description of the ladle replacement work is omitted, and only the mold assembly replacement work is described.

When replacing the mold assembly, after the continuous casting is completed (interrupted), the swivel base 9 is swung, and the main support arm 1 is moved by the lifting devices 15a and 15b.
2a12b to raise and lower the gripping bases 17a and 17b,
The empty ladle 31b of the gripping table 17b is transferred to the inter-building carriage 35 and is carried to the first building A, and is carried by the overhead crane 28 to a predetermined position such as the converter 29 behind the furnace. Then, the maintained mold assembly 2Aa is suspended from the mold assembly maintenance area 30 by the overhead crane 28, loaded on the inter-building carriage 35, and transported to the second building B.

On the other hand, in order to make the ladle turret after removing the empty ladle 31b from the holding table 17b function as the ladle turret / mold assembly changing device 1, the second building B
Using the overhead crane 32, the suspension table 22 is suspended from the storage site and placed and locked on the grasping tables 17a and 17b on both sides of the ladle turret, respectively.

Next, the small hook 26 of the suspension table 22 placed and locked on the holding table 17b located on the continuous casting equipment 2 side is engaged with the hanging ring 27 of the used mold assembly 2Ab of the continuous casting equipment 2. Then, suspend it and trolley 3
Suspension stand 2 placed and locked on the grip stand 17a located on the 5 side
The small hook 26 of No. 2 is engaged with the prepared mold assembly 2Aa on the inter-carriage truck 35, and this is suspended so that the lifting operation by the lifting devices 15a and 15b and the turning operation of the swivel base 9 cooperate. The used mold assembly 2Ab is removed from the continuous casting facility 2 and transferred onto the inter-building carriage 35, and the prepared mold assembly 2 from the inter-building carriage 35 is removed.
Ab is transferred to the continuous casting equipment 2 and incorporated into the continuous casting equipment 2.

At the same time, the used mold assembly 2Ab transferred onto the inter-building carriage 35 is transported to the first building A by the inter-building carriage 35 and suspended by the overhead crane 28 to suspend it.
Transport to Thus, the replacement work of the mold assembly is completed.

After the replacement work of the mold assembly is completed, the overhead crane 32 is used to move the respective gripping stands 17
The suspension table 22 is detached from a and 17b, and the suspension table 22 is conveyed to a predetermined storage place.
Next, it is put in a state of being used as a ladle turret and is kept in standby.

The present invention is not limited to the above embodiment. For example, regarding the turning structure of the ladle turret and mold assembly changing device, the support arm lifting and lowering structure, the gripping table structure, the suspension table structure, the engaging structure, etc., the type of continuous casting equipment, equipment capacity, mold assembly Shape, weight,
The structure, the shape of the ladle, the size, the weight, the layout of the continuous casting plant, and the like are changed within the range satisfying the above claims 1 and 2. Therefore, the method of exchanging the mold assembly is also changed within the range satisfying claims 3 to 4 in accordance with the above change.

[0053]

According to the present invention, it is possible to replace the ladle and the mold assembly without arranging an overhead crane having a large load in the building where the continuous casting facility is installed, and the facility cost is greatly reduced. Is possible. Also,
Since the turret type exchange device is used for the exchange of the ladle and the mold assembly, the exchange work of the ladle and the mold assembly can be performed easily and in a short time.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a structural example of a ladle turret / mold assembly changing device of the present invention.

2 is a schematic plan view showing a structural example of the ladle turret / mold assembly changing device of FIG. 1. FIG.

FIG. 3 is a schematic plan view showing an arrangement example of a ladle turret / mold assembly changing device and an example of related equipment layout according to the embodiment of the present invention.

FIG. 4 is a schematic plan view showing an arrangement example of a ladle turret / mold assembly changing device and a related equipment layout example according to another embodiment of the present invention.

FIG. 5 is a side cross-sectional schematic explanatory view showing a structural example of a conventional general fixed mold type continuous casting machine.

[Explanation of reference numerals] 1 ladle turret and mold assembly exchange device 2 continuous casting equipment 2Aa used mold assembly 2Ab serviced mold assembly 3 temporary storage space 4 drive device 5-7 gears 8 swivel machine 9 swivel table 10 support columns 11, 13, 18, 19 Support shafts 12a, 12b Main support arms 14a, 14b Sub support arms 15a, 15b Lifting devices 16a, 16b Lifting rods 17a, 17b Grips 20 Hooks 21 Suspended beams 22 Suspension pedestals 23 Ladle tops 24 Differences Entry hole 25 Locking pin 26 Small hook 27 Suspension ring 28,32 Overhead crane 29 Converter 30 Maintenance site 31a, 31b Ladle 33 Tundish 34 Inter-building track 35 Inter-building truck

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location B66C 17/06 B66C 17/06

Claims (4)

[Claims] 1. A column is erected on a swivel table arranged in the vicinity of a continuous casting facility, and the tips of a pair of support arms are coaxially and independently rotatably supported vertically through a pin on the column. At the same time, the lifting rods of the lifting device are respectively connected to the intermediate portions of the pair of support arms, and the gripping bases are connected to the tip ends of the pair of support arms so that they can be horizontally supported. A ladle turret and mold assembly exchange device, characterized in that it is detachably engageable. 2. A pair of support arms are formed by a pair of main support arms and a pair of sub support arms, respectively, and the pair of main support arms and the pair of sub support arms are independently pivoted vertically by a pin. Supported freely,
Further, the support points are arranged so that the rotation center of the pair of main support arms and the rotation center of the pair of sub support arms are located above and below on the same vertical line in the vertical direction. An elevating rod of an elevating device is connected to an intermediate portion of one of the sub-support arms, and a gripping table is horizontally supported so as to be horizontally supported at the tips of the pair of main support arms and the pair of sub-support arms. The ladle turret and mold assembly replacement device according to claim 1. 3. A continuous casting plant in which an overhead crane and a maintenance area are installed in the first building, and an overhead crane and continuous casting equipment are installed in a second building adjacent to the first building. The ladle turret and mold assembly changing device according to claim 1 or 2 is arranged between the two buildings, and the gripping base is made to be the first building by the vertically rotating operation of the supporting arm by the elevating device and the swiveling operation of the swiveling base. When the mold assembly is replaced, the mold assembly suspension base is engaged in advance with the gripping base, and the serviced mold assembly transported by the overhead crane from the maintenance ground in the first building is used for one of the two. Suspend with the suspending tool of the suspending stand of the gripping stand, and suspend and remove the used mold assembly of the continuous casting equipment with the suspending tool of the suspending stand of the other gripping stand, and then swivel the swivel stand. And move it to the first building, while at the same time The serviced mold assembly is moved to the continuous casting equipment by the suspension tool of the suspension table of the above-mentioned holding platform and installed, and the used mold assembly moved to the first building is transported to the maintenance area of the first building by the overhead crane. A method of replacing a mold assembly, the method comprising: 4. An overhead crane and a maintenance area are installed in the first building, and an overhead crane and continuous casting equipment are installed in a second building adjacent to the first building. A ladle turret / mold according to claim 1 or claim 2 between a track of an inter-building truck and a continuous casting facility in a continuous casting factory in which a track is laid between two buildings to run an inter-building truck. An assembly exchanging device is provided, and the vertical movement of the support arm by the elevating device and the swiveling motion of the swivel base allow the gripping base to move freely between the continuous casting equipment and the inter-building carriage. Engage the mold assembly suspension base with the gripping base, load the completed mold assembly from the maintenance area of the first building onto the inter-building carriage with the overhead crane, and convey it to the predetermined position of the second building, and hold one side. Suspend with the suspending tool of the stand, After suspending and removing the used mold assembly from the continuous casting equipment with the suspension tool of the suspension base of one gripping platform, swivel the swivel platform to load it on the inter-building carriage and at the same time suspend the suspension of the other gripping platform. Move the built-up mold assembly on the inter-building trolley to the continuous casting equipment with the suspending tool of the suspension stand and install it, and transfer the used mold assembly loaded on the inter-building trolley to the first building by the inter-building trolley, A method of exchanging a mold assembly, characterized by transporting it to a repair shop by an overhead crane.