JPH05200504A - Equipment for supporting and fitting/separating stopper in tundish for continuous casting - Google Patents

Abstract

PURPOSE:To quickly fit a stopper into a tundish and to shorten preheating time for the following casting by providing a horizontal arm fitted to a stopper rod and a vertical support connected to the horizontal arm and vertically sliding the vertical support. CONSTITUTION:The horizontal arm 1 having a stopper rod fitting part at one end and the vertical support 3 connecting to the top part of the horizontal arm at the other end of this horizontal arm 1 are provided and the lower end of this vertical support 5 is combined with the top part of an inner frame 4 vertically sliding along the inner surface of an outer frame 5. This outer frame 5 is attachably/detachably fitted to a receiving metal tool 7 arranged at an iron shell in the tundish and a lifting control device for vertically sliding the inner frame 4 is built in between the outer frame 5 and the inner frame 4. By this method, the stopper can quickly be fitted to the tundish and the preheating time of the tundish is shortened and fuel cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting and attaching a stopper used in a continuous casting tundish.

[0002]

2. Description of the Related Art FIG. 5 is an explanatory view of an example of a conventional supporting device for a stopper of a continuous casting tundish, (A) is a plan view and (B) is a vertical cross-sectional view of a loro. is there.

A stopper 9 in which the outer surface of the stopper rod 2 is wrapped with a refractory material is mounted by a nut 21, for example, on a mounting portion whose upper end is provided at the end of the lateral arm 1. The other end of the horizontal arm 1 is attached to the top of the vertical rod 3, for example, the key 13
Mounted by. Reference numeral 18 in the drawing denotes a guide bracket provided on the iron skin 8 of the tundish, which has a guide hole. The lower portion of the vertical rod 3 is inserted into the guide hole of the bracket 18, and the handle 15 and the vertical rod 3 are attached to the guide bracket 18 by the pins 22 and 14. When the handle 15 is moved in the direction of arrow 19 by this supporting device, the vertical rod 3 and the stopper 9 move integrally in the direction of arrow 20.
In the figure, 16 is an opening provided in the tundish cover 12 for injecting molten metal in a ladle (not shown), and 17 is an opening for a stopper provided in the tundish cover 12.

When the casting is completed, the stopper 9 is taken out, the inside of the tundish is inspected and repaired, and then the inside of the tundish is preheated to a high temperature for the next casting. If the work from the end of casting to the start of preheating can be done in a short time, the temperature in the tundish will not drop excessively, and the preheating time for the next casting can be shortened to reduce the preheating cost. it can. When the stopper 9 is taken out after the temperature inside the tundish has dropped after the casting,
Since the molten metal remaining in the tundish solidifies on the lower end of the stopper 9 and fixes the stopper, the stopper 9
Is damaged and cannot be used again. If the stopper can be taken out before the molten metal remaining in the tundish is solidified, the stopper 9 is less damaged and can be reused.

When the stopper 9 is taken out after casting with the tundish support device of FIG. 5, the nut 21 is loosened, the pin 14 is removed, the lateral arm 1 is turned in the direction of arrow 23, and the stopper rod is used by using a crane or the like. However, since the temperature inside the tundish is high, it is difficult to quickly remove the stopper 9 by this method.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stopper support / attachment / detachment device capable of quickly removing the stopper 9 when casting is completed.

[0007]

FIG. 1 is an explanatory view of an example of a stopper supporting device for a continuous casting tundish according to the present invention when a stopper is attached. FIG. 1A is an explanatory view of a vertical section, and FIG. ) Is an explanatory view of the Eii cross section. The present invention will be specifically described with reference to FIG.

The lateral arm 1 has a mounting portion for the stopper rod 2 at one end, and the stopper rod of the stopper 9 is mounted on this mounting portion with, for example, a nut 21 or the like. The other end of the horizontal arm 1 is attached to the top of the vertical rod 3 by, for example, the key 13. The lower end of the vertical rod 3 is joined to the top of the inner frame 4 by welding, for example. An outer frame 5 is provided outside the inner frame 4. The inner frame 4 and the outer frame 5 have a built-in lifting control device 24 therein. By operating the lifting control device 24, the outer surface of the inner frame 4 slides up and down along the inner surface of the outer frame 5. On the outer surface of the outer frame 5, one or more handles 6 are provided. The tundish is provided with a frame-shaped receiving fitting 7 joined to the iron skin 8. A slit-shaped vertical groove 25 into which the handle 6 provided on the outer frame 5 is fitted and fitted into the receiving metal fitting 7.
To provide. The receiving metal 7 has a shape in which the handle 6 is protruded from the vertical groove 25 and the outer frame 5 can be fitted inside to be housed in a shape.

FIG. 2 is an explanatory view of an example of the stopper supporting device for the continuous casting tundish of the present invention when the stopper is removed. In the stopper supporting device of the present invention, at the time of completion of casting, the handle 6 is gripped and the handle 6 is lifted upward by using, for example, the attaching / detaching device described later in FIG. By this operation, the stopper 9, the horizontal arm 1, the vertical column 3, the inner frame 4, the lifting device 24, and the outer frame 5 are integrally removed from the bracket 7. At the time of this removal, it is not necessary to loosen the nut 21 or the like located at a high temperature above the tundish, and the stopper 9 can be quickly taken out of the tundish after the casting is completed. Therefore, the working time from the end of casting to the start of preheating for the next casting can be shortened, and the preheating time for the next casting can be shortened. If the stopper 9 is taken out quickly, the stopper 9 is less damaged and the stopper 9
Can be used again.

3A and 3B are explanatory views of an example of a stopper attaching / detaching device of a continuous casting tundish according to the present invention. FIG. 3A is a plan view and FIG. 3B is a vertical cross section. This example is outer frame 5
Has a rectangular frame shape and has an upper handle 6-1 extending left and right and a lower handle 6-2 extending forward.

In the figure, reference numeral 26 is an upper grip, and the end portion is an arrow 6 '.
It can be opened and closed in the -1 direction, and the upper handle 6-1 can be held. 27 is a lower grip, and the end is an arrow 6'-
It can be opened and closed in two directions, and the lower handle 6-2 can be held. 28 is an elevator, and the upper grip 26 and the lower grip 27 are attached to the elevator 28.
8 can be vertically moved up and down along an elevating column 29.
An elevating device including an elevating table 28 and an elevating column 29 is arranged on a carriage 30 that can travel on the operating floor.

That is, the apparatus of FIG. 3 has grips 26 and 27 for holding the grips 6 (6-1 and 6-2) provided on the stopper supporting device of the present invention, and the grips 6-1 and 6-. A lifting device composed of 28 and 29 that holds 2 to hold the outer frame 5 of the stopper supporting device of the present invention so as to be detachably lifted to the receiving metal 7 is arranged on a trolley 30 capable of traveling on the operating floor. It is a device for attaching and detaching the stopper of the continuous casting tundish.

Incidentally, reference numeral 31 in FIG. 3 is an opening / closing device for opening and closing the upper grip 26 in the direction of arrow 6'-1 and the lower grip 27 in the direction of arrow 6'-2. It can be easily prepared by using mechanical, electrical or hydraulic means. Further, the lift base 28 moves up and down along the lift columns 29, but this lift can be easily achieved by using known mechanical, electrical or hydraulic means. Further, it is possible to easily raise and lower the lift table 28 along the lift column 29 and to turn around the lift column 29 in the direction of the arrow 32 by using a known means.

Although the present invention has been described in detail with respect to the example of removing the stopper from the tundish, the stopper can be quickly attached to the tundish by using the supporting device and the attaching / detaching device of the present invention. That is, a large number of storage fittings having the same shape as the receiving fitting 7 described above are installed in the stopper storage yard, and the stopper 9, the side arm 1, and the stopper 9, which are removed from the tundish or newly assembled, are installed.
When a unit including a combination of the vertical column, the inner frames 3 and 4, and the outer frame 5 is stored in the multi-unit storage fitting, the handle 6 (6-1, 6-1 of the outer frame) is used by using the attaching / detaching device shown in FIG.
The stopper can be quickly attached to the tundish by holding 6-2) and removing this unit from the storage metal fitting and attaching it to the tundish receiving metal fitting 7.

[0015]

EXAMPLE FIG. 4 is an explanatory view of an example of the apparatus of the present invention.
(A) is an explanatory plan view and (B) is a cross-sectional view taken along the line of Haha. When removing the stopper 9 with this device, the upper grip 26
Is the upper handle 6-1 and the lower grip 27 is the lower handle 6
Grab -2. After that, the elevating cylinder 34 mounted on the carriage 30 is extended, and the elevating outer frame 35 is raised. The upper grip 26 and the lower grip 27 rise together with the lifting frame. A turning motor 36 turns the turning pinion gear 38 with the elevating outer frame 35 raised. This rotation causes the elevating outer frame 35 to swivel via the swivel gear 39. By these operations, the stopper 9 is removed from the tundish together with the horizontal arm 1, the vertical rod 3, and the outer frame 5. This removal work of the stopper 9 can be performed in a very short time. Although the stopper 9 is attached in the reverse order of the above, the attaching operation can be performed in a short time.

[0016]

By implementing the present invention, the stopper can be quickly mounted on the tundish.
Therefore, the preheating time of the tundish for the next casting can be shortened and the fuel cost for preheating can be reduced. Further, since the stopper can be taken out before the molten steel remaining in the tundish is solidified, the stopper 9 is less damaged and can be reused. Furthermore, the use of the device of the present invention improves the work environment and enables safe work.

[Brief description of drawings]

FIG. 1 is an explanatory view of an example of a stopper supporting device for a continuous casting tundish of the present invention, FIG. 2 is an explanatory view of an example of a stopper supporting device of the present invention when removing a stopper, and FIG. 3 is a stopper attaching / detaching device of the present invention. FIG. 4 is an explanatory view of an embodiment of the device of the present invention, and FIG. 5 is an explanatory view of an example of a conventional supporting device for a stopper of a continuous casting tundish.

[Explanation of symbols]

1: Horizontal arm, 2: Stopper rod, 3: Vertical rod, 4: Inner frame, 5: Outer frame, 6 (6-1, 6-
2): Handle, 7: Bracket, 8: Iron skin, 9: Stopper, 10: Tundish lining refractory, 11: Tundish nozzle, 12: Tundish cover,
13: Key, 14: Pin, 15: Handle, 1
6: Opening part, 17: Opening part, 18: Guide bracket, 21: Nut, 22: Pin, 24: Elevating control device, 25: Vertical groove, 26: Upper grip, 27: Lower grip, 28: Lifting platform, 29: Lifting column, 3
0: Bogie, 31: Switchgear, 33: Screw, 34: Lifting cylinder, 35: Lifting outer frame, 36: Swing motor, 37: Bearing, 38: Swing pinion gear, 3
9: turning gear, 40: inner cylinder, 41: roller, 4
2: Rail mount.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Susumu Kubo 1-1, Higashihama-cho, Hachimansai-ku, Kitakyushu, Fukuoka Prefecture Kurosaki Ceramics Co., Ltd. (72) Masataka Kawano 1-1, Higashihama-cho, Hachimansai-ku, Kitakyushu, Fukuoka Issue Kurosaki Ceramics Co., Ltd. (72) Inventor Yukio Nakamura 1 Kimitsu, Kimitsu-shi, Chiba Shin Nippon Steel Co., Ltd. Kimitsu Steel Co., Ltd. Kurosaki Furnace Industry Co., Ltd. Kimitsu Works

Claims (2)

[Claims] 1. A horizontal arm having a stopper rod mounting portion at one end, and a vertical column having the top portion connected to the other end of the horizontal arm, the lower end of the vertical column vertically extending along the inner surface of the outer frame. The outer frame is joined to the top of the inner frame, and the outer frame is detachably fitted in a metal fitting provided on the iron skin of the tundish, and the inner frame is provided between the outer frame and the inner frame. Support device for stopper of continuous casting tundish characterized by having built-in lift control device for sliding up and down 2. A lifting device for holding the stopper supporting device of the continuous casting tundish according to claim 1 for holding the holding device, and for lifting and lowering the outer frame to and from the metal fitting so as to be detachably attached to the handle. Detaching device for stopper of continuous casting tundish, characterized by