KR20020052731A - Apparatus for removing the skull from the cover of the tundish - Google Patents

Abstract

PURPOSE: An apparatus for removing skull from the cover of a tundish is provided to easily and safely separate skull adhered onto the cover of the tundish when pouring molten steel from a ladle into the tundish without facility damage. CONSTITUTION: In an apparatus for removing skull(21) adhered to the lower part of an argon box type tundish cover(11) from the cover, the apparatus for removing skull from the cover of a tundish comprises a pair of supports which are removably mounted on the upper part of the cover, each of which are connected by an intermediate connection member, and in which a penetration hole having a certain size is formed on the central part of the intermediate connection member; a lever rod(25) removably mounted on the intermediate connection member of the supports; and a driving means(24) driving the lever rod(25) so that the lever rod(25) penetrates the penetration hole, wherein a fixed plate(31) is installed at the lower part of the supports, a locking loop(26) is axially supported onto the fixed plate(31) so that the locking loop(26) is laterally slid, and the locking loop(26) is rotated on the fixed plate(31) around the axially supported part.

Description

Apparatus for removing the skull from the cover of the tundish}

The present invention relates to a device for detaching the now attached to the argon box-type tundish cover, and more particularly to a now-separating device capable of simply and safely detaching the now attached to the tundish cover.

In general, the mini-mill tundish cover 11 is a facility for preventing the temperature drop of the molten steel 14 in the tundish and to protect the safety of the operator operating at the top, the argon box type cover is used when the molten steel is taken from the ladle 10 have.

Since the argon box type cover 11 is configured to smoothly receive molten steel from the ladle 10 in the tundish, unlike the general steelmaking equipment, the argon box type cover 11 is formed of a conical model steel bar. And the upper part of the cone is attached to the argon line to prevent reoxidation by blocking the external oxygen inflow, combined with a constant construction thickness by the anchor and the refractory (13) that can withstand high heat to protect the shell outside the body have.

However, the argon box-type cover 11 has a molten steel method in the tundish is completely different from the long nozzle type of the general steelmaking equipment, the molten steel due to the large number of ladles (performance ratio) according to the one-time use of tundish By falling of molten steel at the time of fall, argon box-shaped cover 11 is attached to the current 21 of about 1-2 tons.

Then, the now 21 attached to the inside of the cover 11 is repeatedly performed for each refractory repair in the argon box-shaped cover 11 of the tundish. This separation operation is performed by the worker's blow operation by the crane installation, the oxygen pipe cutting operation and the blow method by the heavy equipment installation.

However, if the separation operation as described above is performed, there is a risk of damage to the equipment, and also requires excessive working time, and in particular, problems such as worker's safety accident and early breakage of the cover occur, resulting in worker's work efficiency. There is a problem that inhibits.

The present invention has been made to solve the conventional problems as described above, it is easy and safe to perform the task of separating the now attached to the tundish cover when the molten steel is taken from the ladle as well as does not damage the equipment It is an object of the present invention to provide a tundish kaba separation device.

1 illustrates a general tundish operating state.

Figure 2 is a view showing a state in which the separation device according to the present invention mounted on the tundish cover.

Figure 3 is a partial cross-sectional view showing a state in which the fastening ring of the now separating device according to the present invention coupled to the tundish and the cover.

Figure 4 is a view showing a fastening state of the key and lever lever of the now separating apparatus according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10: ladle

11: argon box type tundish cover

18: Crane

24: hydraulic pump motor

25: lever lever

26: fastening ring

27: Jockey

31: fixed plate

In order to achieve the above object, according to the present invention, the device for separating the now attached to the lower portion of the argon box-shaped tundish kaba from the kava is detachably mounted on the top of the kava and connected to each other by an intermediate connecting member. A pair of supports having a through hole of a predetermined size formed at a central portion of the intermediate connecting member, a lever rod detachably mounted on the intermediate connecting member of the support, and the lever to penetrate the through hole; Characterized in that the drive means for driving the lever rod.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

According to the present invention, the tundish cover is separated from the shaft portion 29 for supporting the main body, the fastening ring portion 26 for fastening to the cover 11, and the attached cover 21 to the cover 11 It is composed of a lever pump 25 to separate from the hydraulic pump motor 24 to operate the lever bar (25).

Shackle fixing ring part 32 is penetrated to both sides of the shaft portion 29 to facilitate crane transportation, and a hydraulic pump motor 24 and a protective box are installed at the center thereof, and a small key is provided at the lower end of the hydraulic pump motor 24. 27 and the fixing box are fixed.

On both sides of the shaft portion 29 is provided with a lever hole portion 30 that can fix the operating direction of the lever rod 25 in the horizontal direction and the fixing plate 31 that can support the force of the hydraulic lower end and to prevent separation Fastening ring 26 is provided.

The fastening ring 26 is slidably mounted on the fixed plate 31 and pivotally pivoted about the mounting portion 26-a. Therefore, when the fixing plate 31 is seated on the tundish cover 11 in a state in which the locking jaw portion of the fastening ring 26 faces upward, the locking jaw portion is mounted to be located outside the edge of the tundish cover 11. The fastening ring 26 is rotated about the part 26-a. Thereafter, the locking jaw portion is slid into the rim of the tundish cover so that the locking jaw is fastened to the edge of the tundish cover, and the separation device is fixedly mounted on the cover.

Referring to the operation of the now separating device according to the present invention configured as described above are as follows.

After the tundish operation is completed, if the tundish kaba 11 moved to the tundish refractory repair site is carried out by the cooling operation through natural cooling, excessive current attachment of about 1 to 2 tons is generated at the lower end of the cover.

In this way, the cover 11 is now attached to the lower portion is carried to the separation place now using a crane. Then, according to the present invention, the now separating device is fastened to the crane using a wire rope, and the lower end fixing plate 31 is fixed to the upper steel skin surface of the cover, and the fastening ring 26 is simply fastened in one touch. .

Then, the direction of the lever bar 25 for removal is selected and the direction is adjusted, and the switch of the hydraulic pump motor 24 is operated after being installed in the fixing hole 30.

The actuation of the motor 24 causes the lever 25 to exert a force against the now 21, as a result of which the now 21 is separated from the cover 11.

After the current 21 is separated, the motor 24 is stopped and the lever rod 25 is recovered to the initial position.

Therefore, according to the present invention, the current attached to the lower part of the cover can be easily and safely removed, thereby improving the work efficiency of the operator and eliminating the risk factors for the occurrence of safety disasters, and reducing the cost by improving the equipment life. And can greatly contribute to environmental improvement.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. It should be recognized.

Claims (2)

In the device for separating the now attached to the lower portion of the argon box-shaped tundish kava from the kava, A pair of supports detachably mounted on an upper part of the cover and connected to each other by an intermediate connecting member, and a through hole having a predetermined size is formed at a central portion of the intermediate connecting member; A lever rod detachably mounted on the intermediate connecting member of the support; A tumbler cover for separation of tadashi Kaba, characterized in that the drive means for driving the lever so that the lever bar can pass through the through hole. The method of claim 1, A fixing plate is provided at the lower end of the support, and the fastening ring is axially slidably supported on the fixing plate, and the fastening ring is rotatable about the shaft support on the fixing plate. Separator.