JPH0649419Y2 - Continuous casting machine pouring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pouring equipment for continuous casting equipment.

[Prior Art and Its Problems] Generally, a ladle used in a continuous casting facility (hereinafter referred to as a continuous casting machine) is supported by a ladle truck or a ladle turret, and pours into a tundish installed below the ladle. Is configured.

Among them, the ladle dolly, for example, mounts the ladle detachably on a box-shaped machine frame in a plan view, provides traveling wheels on the lower surface of each corner of the machine frame, and allows the ladle dolly to travel on the rails. (For example, Japanese Examined Japanese Patent Publication Sho 54-8333
(See the official gazette). However, in such a ladle dolly, the ladle dolly is taken in and out for each charge and moved frequently, so that the work efficiency is lowered and the ladle turret is more advantageous.

The ladle turret, on the other hand, rotates about a vertical axis.
The cantilevered arms of the book are projected horizontally, the tips of these arms are formed into forks, and the ears of the ladle are placed on each fork part, so that one ladle can be poured into the tundish. I have to. When pouring is completed, the arm is rotated to continue pouring from other ladles, and the empty ladles are carried out of the casting yard by a crane (for example, Japanese Patent Publication No. 49-39731 and Japanese Patent Publication No. 52-7409). (See Japanese Patent Publication No. 52-20419, etc.).

However, according to such a ladle turret, as described in Japanese Patent Publication No. 52-20419, the old and new ladle can be replaced quickly, and the amount of molten steel in the tundish can be maintained above a certain amount. However, when replacing an empty ladle with a molten steel filled ladle, in actual operation, pouring from these ladle to the tundish is stopped for several minutes. Therefore, even when the ladle is replaced, it is necessary to increase the capacity of the tundish in order to continuously cast the molten steel in the tundish at a certain amount or more.

As a result, the refractory unit consumption of the tundish increases, and the tundish car and its holding device become large in size due to its strength. Moreover, in such a ladle turret, the arm for supporting a huge ladle having a capacity of, for example, 250 ton is provided in a cantilevered manner, so that the equipment of the ladle turret becomes extremely large.

Therefore, the ladle dolly described above is enlarged to two (2
Ladles (also referred to as pots or two tanks) may be placed side by side, and these ladles may be temporarily poured into the same tundish at the same time, but in such a case, two huge ladle loads are placed on the bottom surface of the machine frame. It is supported by the traveling wheels provided, and when exchanging the ladle, an unbalanced load for mounting a new ladle acts on a portion of the traveling wheels, so that the ladle may not be supported safely.

[Means for Solving the Problems] The present invention was devised to solve these problems, and the gist of the present invention is that the ladle can be removably mounted on the machine frame. And, in a pouring equipment having a ladle trolley provided with a plurality of wheels rolling on the rail on the lower side of the machine frame, a rail which contacts the wheel at a position where the ladle trolley is stopped at the pouring location. Is divided in the vicinity of the contact point with the wheel, and the divided divided rail is provided so as to be movable up and down by an elevating device, and the divided rail is lowered so that the load of the ladle and the ladle trolley is applied to the rail or the casting floor by the machine frame. In a pouring equipment of a continuous casting machine characterized by being directly supported by a machine, a ladle can be removably placed on the machine frame, and it can be rolled on a rail below the machine frame. Multiple wheels In a pouring equipment having an attached ladle trolley, the wheels of the ladle trolley are configured to be vertically movable by an elevating device, and by raising the wheels, the ladle and the ladle trolley load are directly applied to the casting floor by the machine frame. It is a pouring equipment of a continuous casting machine characterized by being supported.

[Embodiment] The structure of the present invention will be described in detail with reference to an embodiment shown in the accompanying drawings together with its operation.

1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is a plan view of a tundish.

This embodiment is used for a two-strand type continuous casting machine,
This is a ladle truck for arranging two ladles side by side. First, its outline will be described.

In these figures, 1 is a ladle containing, for example, 250 ton of molten steel, 2 is a ladle carriage, and this ladle carriage 2
Two ladles 1A and 1B are juxtaposed to each other. Reference numeral 3 is a tundish located below the ladle cart 2. The tundish 3 is installed in the tundish car 4. Reference numeral 5 denotes a mold opened on the casting floor, which is vibrated by an oscillation device (not shown).

6 is a fast zone, 7 and 7 are ladle decks, 8 is a tundish car traveling rail for putting in and out the tundish car 4, and 9 is laid on both outer sides of the tundish car traveling rail 8 to form the ladle truck. Two
A ladle truck running rail for evacuating the rail, a casting floor frame 10 forming a casting floor, and a ladle hook 11 suspended from a converter yard to a crane beam 22 for carrying the ladle 1 to the casting yard via a trolley. 3a is a tundish nozzle and 12 is a ladle nozzle.

Then, either the ladle 1A or the ladle 1B filled with the molten steel, for example, the ladle 1A is mounted on the ladle carriage 2 by the ladle hook 11. Next, the molten steel in the ladle 1A is poured into the tundish 3 via the ladle nozzle 12. The molten steel in the tundish 3 is continuously cast into the two molds 5, 5 from the tundish nozzles 3a, 3a.

Now, if the molten steel in the ladle 1A being poured is before the completion of pouring, the ladle 1B filled with molten steel is carried from the converter yard and placed on the ladle trolley 2 and these 2
Two ladles 1A and 1B are simultaneously poured into tundish 3. After that, the pouring from ladle 1A where the amount of molten steel has decreased is completed, so this is the ladle hook.
It is lifted by 11 and carried out from the casting yard. Therefore, in this embodiment, since the pouring from the ladle to the tundish 3 is continuously performed, the tundish 3 can always maintain a certain amount or more of molten steel even with a small capacity.

Next, to describe these members in detail, the ladle truck 2 is configured as follows. That is, 1 placed in the front-back direction (refers to the left-right direction in FIG. 2; the same applies hereinafter)
Wheels 14, 14 are provided on the lower surface of the pair of machine casings 13, 13.
These wheels 14 are rolled on the ladle truck running rail 9. These machine frames 13, 13 are beam 1 on the left and right of the upper end.
Connected by 5,15.

Therefore, the ladle cart 2 covers the tundish 3 and is formed in a gate shape as shown in FIG. Two pedestals 16 and 16 for mounting the ladles 1A and 1B are provided on the upper surfaces of these beams 15, and the ears 17 of the ladle 1 are mounted on these pedestals 16.

Here, the ladle truck traveling rail 9 is laid on the cast floor frame 10 as described above, but is divided in the middle thereof to form a short divided rail 9a. That is,
At the position where the ladle truck 2 is fixed and the tundish 3 is poured with pouring water, the rail 9 is divided before and after the contact point between the wheel 14 and the rail 9, and the divided rail is used as a divided rail 9a.

The divided rails 9a are fixed and supported by hydraulic cylinders 19, and these hydraulic cylinders 19 are built in recesses 18 cut out in the cast floor frame 10. Then, when the ladle truck 2 is fixed and the tundish 3 is filled with molten metal, the split rail 9a is lowered by the hydraulic cylinder 19. as a result,
The lower surface of the machine frame 13 is directly supported by the cast floor frame 10, and the loads of the two ladles 1 and the ladle dolly 2 are directly supported by the machine frame 13 instead of the wheels 14. Therefore,
The ladle carriage 2 is stably fixed.

Further, when casting is completed and a dummy barker (not shown) is carried to the position of the mold 5 to prepare for the next casting, for example, when the dummy bar (not shown) is inserted from above the mold, , The hydraulic cylinder 19 is extended so that the split rail 9a is raised to coincide with the traveling rail 9 of the ladle truck.

As a result, the ladle cart 2 is supported by the wheels 14 and can be retracted from the vicinity of the mold 5.

Since the ladle trolley 2 has no load during the evacuation traveling, it does not matter if it is supported by the wheels 14.
Therefore, since the ladle truck 2 is removed from the mold 5, the dummy bar can be easily inserted, and the mold 5 and the first zone 6 can be easily replaced.

Next, the tundish 3 is provided with a long groove 20 as shown in FIG.
And a short groove 21 are combined to form a cross-shaped tundish. The tundish nozzle 3a is suspended from both ends of the long groove 20, and the ladle nozzle 12 faces both ends of the short groove 21. Then, the bottoms of these grooves are formed in the shape of a ship bottom to improve the flow of molten steel. Further, since the two ladles 1A and 1B are placed in parallel with the casting direction of the continuous casting machine, the tundish installation area can be made smaller than that of a ladle truck placed orthogonally to the casting direction. . The ladle truck of the present invention is not necessarily applied only to the above-mentioned cross-shaped tundish.

The object of the present invention can be achieved even if the wheels driven by an appropriate hydraulic mechanism are moved up and down instead of moving up and down the split rails.

Further, the present invention is not limited to the ladle dolly on which the two ladles are mounted, but can also be applied to the ladle dolly for mounting one large-scale ladle adopting the multi-strand system.

[Effect of device]

 According to the present invention, the following listed effects can be obtained.

When pouring, the load of a huge ladle and a ladle trolley is directly supported by the machine frame on the casting floor (including rails), so safe support is obtained and it is also securely fixed, ensuring safe operation as a whole. be able to.

Moreover, the wheels support the unloaded ladle dolly,
Can be downsized.

In addition, since the ladle cart can be removed, the next casting preparation work can be easily performed.

[Brief description of drawings]

1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is a plan view of a tundish. 1,1A, 1B …… Ladle 2 …… Ladle dolly 3 …… Tundish 9 …… Ladle dolly running rail 9a …… Split rail 13 …… Machine frame, 14 …… Wheel

Claims (2)

[Scope of utility model registration request] 1. A pouring equipment having a ladle trolley in which a ladle can be removably placed on a machine frame, and a plurality of wheels rolling on rails are attached to the lower side of the machine frame. The rail contacting the wheel at a position where the ladle cart stops at the pouring place is divided near the contact point with the wheel,
The divided rail is provided so that it can be moved up and down by a lifting device.
A pouring equipment for a continuous casting machine, characterized in that the load of the ladle and the ladle truck is directly supported by the machine frame on the rail or the casting floor by lowering the split rail. 2. A pouring equipment having a ladle trolley in which a ladle can be removably mounted on a machine frame and a plurality of wheels rolling on rails are attached to the lower side of the machine frame. , A wheel of the ladle dolly is configured to be vertically movable by an elevating device, and by raising the wheel, the ladle and the load of the ladle dolly are directly supported on the casting floor by the machine frame. Pouring equipment.