JP3137783B2 - Core for irregular refractory distribution - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for pouring a refractory into a molten metal container such as a ladle for molten iron or molten steel, a tundish, a vessel for degassing, etc., and pouring the refractory into the container. Also, the present invention relates to an irregularly shaped refractory distribution core for use in repairing a damaged portion of a refractory lining of a container for molten metal by pouring an irregularly shaped refractory.

[0002]

2. Description of the Related Art A side wall and a bottom of a container for molten metal such as a ladle for molten iron or molten steel, a tundish, a vessel for degassing, etc. are lined with a refractory material. In general, a shaped refractory as fired or a shaped refractory which has been preformed and baked or fired has been generally used. However, this type of refractory has a problem that it requires a lot of energy and cost in the manufacturing process and in the lining work of the side wall and the bottom of the container for molten metal, and its workability, labor saving, and safety are improved. At present, such refractory linings are increasingly being cast by casting irregular-shaped refractories, partly because they are a necessary condition for the continuation of corporate activities.

[0003] Conventionally, as a method of applying a refractory material to a molten metal container by lining the refractory material with an irregular refractory material, a fixed refractory material is previously laid on a bottom portion and, if necessary, a molten metal container material above the refractory material. After lining the refractory on the inner surface of the steel shell, a construction metal frame (hereinafter, referred to as “hereinafter”) that forms a gap having a predetermined width between the inner surface of the steel or the inner surface of the formed refractory. After simply positioning and fixing the core, the necessary moisture is added in advance to the inner surface of the steel shell formed in this way or the gap between the inner surface of the formed refractory and the outer surface of the core, and a mixer or the like is added. After pouring and filling the kneaded amorphous refractory, leave it in the state for a predetermined curing time to cure the amorphous refractory, and then remove the core from the core.
Further, a method of drying and preheating has been adopted. In a method in which the refractory is lined with such a molten metal container by pouring an amorphous refractory, the core is shrunk by curing the amorphous refractory inner surface and the core outer surface. It is necessary to trim and remove the core by cutting off the core so as not to damage the hardened irregular refractory by forming gaps. Labor saving, workability improvement and safety assurance are important issues for practical use.

Japanese Utility Model Publication No. 61-42675 discloses a link mechanism for providing an openable and closable door at a notch provided at one position in the axial direction of a core, and for contracting the notch when the door is open. And a working core using the hydraulic cylinder by operating this link mechanism is disclosed. In the case of such a configuration, the core can be deformed in the circumferential direction at the notch portion provided at one place in the axial direction to cut off the core with the irregular-shaped refractory. The force required for elastic deformation is extremely large, and a great deal of energy is required to generate this force, and the power system is disadvantageously large. Further, in this case, since only one cutout portion is provided in the axial direction, the deformed shape of the core is asymmetric, and a uniform gap is formed between the core and the inner surface of the molten steel container. Because it is difficult to form
In addition to the drawback that when removing the core in the upper direction, the irregular refractory may be damaged, making smooth removal work difficult.
It is necessary to take a considerably large displacement in the circumferential direction of the core, and the stress that deforms the core at this time becomes excessive, so when the core is used repeatedly, irregular deformation of the core or permanent deformation occurs. There are problems such as a drawback that long-term use becomes difficult.

On the other hand, Japanese Patent Publication No. 61-54511 discloses that a mold is divided vertically, each divided part is made expandable and contractible in a radial direction by a hydraulic cylinder or the like, and an outer end opening of the divided part is detachable. A construction core which is hermetically closed using a slidable lid built in a lid or a mold is disclosed. However, the embodiment is one-fourth of the height of the entire molten metal container.
It is a core that performs lining construction or repair of 1/5 height, and although the detailed structure is not specified, it is considered that the lid of the opening needs to be manually attached and detached at any time. There is a problem that it is difficult to apply a large core structure for collectively constructing the entire lining in terms of workability, operability, and safety.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and has a simple structure in which the inside surface of the metal shell of the molten metal container or the built-in fixed refractory is formed. A gap for easily pouring an amorphous refractory with a side surface can be quickly and uniformly formed, and the irregular refractory can be formed on the inner surface of the metal shell of the metal container or on the inner surface of the constructed fixed refractory. After flowing into the gap between the core and filling and curing at room temperature to generate mold release strength, it can be easily performed without giving excessive force to the core side wall constituting members that constitute the core outer surface. Irregular refractories that can be easily and safely removed from the inner surface of the irregularly shaped refractory that has been shrunk and hardened without damaging the irregularly shaped refractory without damaging the refractory. It is an object to provide a core for pouring work.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an irregular-shaped refractory logistics installation core according to the present invention has a fixed support at a central portion on a core fixed bottom. And a plurality of core side wall components forming an outer surface of the core supported by the fixed column and a plurality of spacer members for closing a gap between edges of the core side wall component. The outer surface of the child is vertically divided, and a screw rod for operating a first link and a screw rod for operating a second link are rotatably mounted substantially in parallel with the fixed column, respectively. The first and second link mechanisms driven by the screw rod and the second link operating screw rod have a structure in which the core side wall component member and the spacer member can be separately moved inward and outward with respect to the fixed support. Things.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a core for an irregular-shaped refractory physical distribution work according to the present invention. FIG. 1 shows one of the cores for the irregular refractory logistics installation work according to the present invention.
FIG. 2 is a plan view of the embodiment, FIG.
1 is a cross-sectional view taken along the line BB in FIG. 1, FIG. 4 is an enlarged detailed view of a portion C in FIG. 1, and FIG. It is.

In the drawings, reference numeral 1 denotes a core side wall constituting member constituting an outer surface of a core, and the core side wall constituting member 1 has an edge thereof.
Angle between the tangent line on the outer wall and the divided end face
It is preferable that the degree is formed at an acute angle . 2 is a spacer member for closing the gap between the edges of the core side wall configuration member 1 constituting the core outer surface, the core side wall with its cross section is formed in a short trapezoidal outer wall surface Although it may be made of the same steel material or the like as the component member 1, it is made of a material such as rubber or synthetic resin which has excellent elasticity at the time of elastic deformation and does not deteriorate due to a component of a chemically irregular refractory. Is preferred. This core side wall component 1
The entire outer surface of the core is divided in the vertical direction by the number of pairs of the core member and the spacer member 2. This division number is divided into two as in the embodiment shown in FIGS. 1 to 4 (however, the spacer member 2 is not counted.
The same applies to the following), or even the four-division as in the embodiment shown in FIG.
Any two or more divisions are allowed. 3 is a fixed core bottom placed on a fixed refractory previously laid on the bottom surface of the steel shell in the container for molten metal or on a non-fixable refractory lined thereon if necessary. Reference numeral 4 denotes a fixed support standing upright at the center on the core fixed bottom 3.

Reference numeral 5 denotes a thrust bearing unit installed on the core fixed bottom 3 adjacent to the fixed support column 4, and 6 is rotatably supported by the thrust bearing unit 5 substantially in parallel with the fixed support column 4. A first link operating screw rod rotatably supported by a bearing unit 6b fixed and installed at at least one place above the fixed support column 4, and a height corresponding to a core side wall component bracket 10 described later. A reverse screw is formed on one side in the longitudinal direction of the first link operating screw bar 6 from the position of the first link. 7
Is a first nut screwed to the first link operating screw rod 6 and moved along the side surface of the fixed support 4. One end 8 is connected to the first nut 7 by a pin 9 and the other end is a core. A first lever connected to a core side wall component bracket 10 fixed to the inner surface of the side wall component 1 by a pin 11; these thrust bearing units 5, first link operating screw rods 6, and first nuts; 7, a pin 9, a core side wall component bracket 10 and a first lever 8 constitute a first link mechanism for moving the core side wall component 1 inward and outward with respect to the fixed column 4 to expand and contract.

In this case, the first link operating screw rod 6 is used.
Is formed with a plurality of sets of reverse screws that are continuous in the longitudinal direction. Therefore, it is not possible to screw all four first nuts 7 as shown in FIG. Then, as shown in the figure, the first link operating screw rod 6 is cut in the middle of the longitudinal direction, the first nuts 7 on both sides are screwed together, and the cut portions are connected by the coupling 6a to be rotatable. It is preferable to constitute the single first link operating screw rod 6. However, in the case of the example shown in FIG. 2, it is sufficient to cut one place at the center of each set of reverse screws threaded in the longitudinal direction. It is preferable to constitute the single first link operating screw rod 6. Also, as shown in FIG.
One of the first levers 8 is assembled in a crossed state, cut between the sets of reverse screws, and the cut portion is connected by a coupling 6a to form a single first link operating screw. The bar 6 may be configured.

Reference numeral 13 denotes a worm gear composed of a worm (not shown) and a worm wheel 13a provided at the upper end of the fixed support column 4. The worm is fixed to the output shaft 13b of the worm wheel 13a by rotating the worm. The gear 13c rotates, and the gear 13c meshes with the gear 12 fixed to the upper end of the first link operating screw rod 6. Reference numeral 14 denotes a worm gear handle mounted on the worm gear 13 via a worm gear handle shaft 14a.

In FIG. 3, reference numeral 15 denotes a bearing unit fixedly installed on the fixed support 4, and reference numeral 16 denotes a second link operating screw rod rotatably held by the bearing unit 15 substantially in parallel with the fixed support 4. In addition, a reverse screw is formed on one side in the longitudinal direction at a height position corresponding to a spacer member bracket 20 described later. Reference numeral 17 denotes a second nut which is screwed to the second link operating screw rod 16 and is moved along the side surface of the fixed column 4.
Spacer member bracket connected to the second nut 17 and the other end is fixed to the inner surface of the spacer member 2
A second lever 20 is connected to the pin 20 by a pin 21.
6, second nut 17, pin 19, spacer member bracket 2
A second link mechanism for moving the spacer member 2 inward and outward with respect to the fixed support 4 by the 0 and the second lever 18 is configured. And the second link operating screw rod.
Since a plurality of sets of reverse screws are formed in the longitudinal direction in the longitudinal direction 16, all of the second nuts 17 as shown in FIG. Since at least one place between the two sets of reverse screws is cut off, these four second nuts 17 are screwed together, and the cut places are connected by the coupling 16a and rotated. It is preferable to form a single, real second link operating screw rod 16. Although not particularly shown, the second levers 18 are combined in a partially crossed state, cut at one location between the sets of longitudinal screws in the longitudinal direction, screwed into the nut 17, and then cut. The portions may be connected by a coupling 16a to form a single second link operating screw rod 6. Reference numeral 22 denotes a handle fixed to the upper end of the second link operating screw rod 16 for manually rotating the screw rod 16.

[0014]

In order to construct a refractory lining of a container for molten metal by using an irregularly shaped refractory material having a core according to the present invention, the first step is to form a molten metal having a bottomed cylindrical shape. Laying a fixed refractory on the bottom inside the steel shell for the container,
Further, if necessary, an irregular-shaped refractory is lined thereon to form a bottom lining, and if necessary, a fixed-type refractory is also lined on the inner surface of the molten metal container. Next, the irregular-shaped refractory logistics installation core according to the present invention is transported using a hanging tool such as an electric hoist (not shown) fixed to the upper portion or detachably attached thereto, and the molten metal container is placed inside the container. The fixing column 4 is inserted on the bottom lining so as to be positioned substantially at the center of the molten metal container, and the core fixing bottom 3 is placed horizontally.

Thereafter, the worm gear 13 installed at the upper end of the fixed support 4 is mounted substantially parallel to the fixed support 4 by driving the electric motor, hydraulic or pneumatic drive source or by manually rotating the handle 14. The first link operating screw rod 6 is rotated, and each first nut 7 screwed to the first link operating screw rod 6 is positioned at a height corresponding to the core side wall component bracket 10. Is moved along the side surface of the fixed column 4 so as to approach the first lever 8 connected to the core side wall component bracket 10 by the pin 11 and to the first nut 7 by the pin 9.
, So as to reduce the angle between the first levers 8, that is, to push the core side wall component 1 outwardly with respect to the fixed column 4, thereby making the core side wall component 1
Between the outer surface of the metal shell and the inner surface of the molten metal container or the inner surface of the fixed refractory constructed on the inner surface of the molten metal container. Fix on the lining.

Next, the second link operating screw rod 16 rotatably supported by the bearing unit 15 substantially in parallel with the fixed support 4 is rotated by the handle 22 fixed to the upper end of the second link operating screw rod 16 to rotate the second link operating screw rod 16. Screw bar for 2 link operation
When each of the second nuts 17 screwed to 16 is moved along the side surface of the fixed column 4 so as to approach a position at a height corresponding to the spacer member bracket 20, the second nut 17 is again moved to the spacer member bracket 20 by the pin 21. The second lever 18 connected to the 2 nut 17 by the pin 19 is arranged so that the angle between the second levers 18 having the pin 21 as the apex becomes small, that is, the spacer member 2 is moved outward with respect to the fixed support 4. It acts so as to push out, so that there is no step between the outer wall surface of the spacer member 2 and the outer wall surface of the core side wall component 1, and the outer wall surfaces of the core side wall component 1 and the spacer member 2 and the molten metal A gap having a predetermined uniform thickness is formed between the inner surface of the container steel shell or the inner surface of the fixed refractory constructed on the inner surface of the molten steel container shell. This operation is performed when the core side wall component 1 is at its end.
The cross section of the edge is formed between the tangent line on the outer wall surface and the divided end face
Angle is formed at an acute angle, and the spacer member 2 when the transverse <br/> cross section is formed shorter trapezoidal outer wall surface side, between the spacer member 2 is of the core side wall configuration member 1 edge Can be easily and reliably pushed into and fitted into the gap, and the gap can be closed.

In this state, the outer surfaces of the core side wall constituting member 1 and the outer wall surface of the spacer member 2 are continuous with each other, for example, a circular outer surface and a circular inner surface of the molten metal container or a molten metal container inner surface. Into a gap of a predetermined uniform thickness formed between a circular inner surface made of a shaped refractory constructed in the above manner, a required amount of moisture or the like was added in advance, and the refractory kneaded with a mixer or the like was poured and filled. After that, after a predetermined curing time, the irregular-shaped refractory is appropriately cured, and then the following frame removal step is performed. In this de-framing, the reverse operation of the above-mentioned process is performed, and details thereof will be described below. First, the second link operating screw rod 16 rotatably supported by the bearing unit 15 in a direction substantially parallel to the fixed support 4 is rotated by a handle 22 fixed to the upper end thereof in a direction opposite to that in the above-described process. By operating the fixing post 4, the second nuts 17 screwed to the second link operating screw rod 16 are separated from the position corresponding to the height of the spacer member bracket 20.
When the second lever 18 is connected to the spacer member bracket 20 by the pin 21 and to the second nut 17 by the pin 19, the angle between the second levers 18 having the pin 21 as an apex gradually increases. Acting so as to increase the size of the spacer member 2, the spacer member 2 is drawn inward with respect to the fixed support 4 so that the outer wall surface of the spacer member 2 is cut off from the inner surface of the hardened irregular refractory.

Next, the worm gear 13 installed at the upper end of the fixed support 4 is moved by an electric motor or the like or a handle.
14 is manually rotated to rotate the first link operating screw rod 6 mounted in parallel with the fixed support 4 in a direction opposite to that in the above-described process. The fixed posts 4 are moved so that each of the first nuts 7 is separated from the position corresponding to the height of the core side wall component bracket 10.
When the first lever 8 is connected to the core side wall component bracket 10 by the pin 11 and to the first nut 7 by the pin 9, the first lever 8 having the pin 11 as a vertex is moved between the first lever 8. Is gradually increased, the core side wall component 1 is drawn inward with respect to the fixed support 4, and the inner side surface of the irregular-shaped refractory in which the outer wall surface of the core side wall component 1 is hardened. Is cut off by a predetermined gap amount.

Therefore, the irregular-shaped refractory logistics installation core according to the present invention is mounted on the irregular-shaped refractory logistics installation core according to the present invention by using a hoist such as an electric hoist (not shown) provided above the core. What is necessary is just to lift from inside a container for molten metal, and to convey it to another predetermined position.

As described above, the irregular-shaped refractory log-in installation core according to the present invention, in which the entire outer surface of the core is vertically divided into two parts, with reference to FIGS. As another embodiment, the outline of an irregular-shaped refractory logistics installation core in which the entire outer surface of the core shown in FIG. 5 is vertically divided into four parts will be described. In the case of the core for refractory logistics installation work divided into four parts, the case of the core for refractory logistics installation work divided into two parts as described above with reference to FIGS. The operation is basically the same.

As shown, four core side wall constituting members 1 constituting the core outer surface, and four spacer members 2 for closing the gaps between the edges of these core side wall constituting members 1 respectively. Thus, the entire outer surface of the core is formed. Therefore, the number of core side wall components 1 and the number of spacer members 2 are each doubled and the number of link mechanisms is also doubled as compared with the case of the core for the refractory log-in installation work divided into two as described above. Therefore, each link mechanism is complicatedly arranged around the fixed support column 4 erected at the center on the core fixed bottom 3. In this case, four second link operating screw rods 16 which are rotationally driven to move the four spacer members 2 inward and outward with respect to the fixed support 4 are respectively mounted on the fixed support 4. It is also possible. 1 is installed as shown in FIGS.
The worm gear 13 (worm and worm wheel 13a) of the unit and the gear 13c via the output shaft 13b are rotationally driven to move the four core side wall components 1 inward and outward with respect to the fixed support 4 respectively. Four gears 12 fixed to the upper ends of the four first link operating screw rods 6 can also be engaged with each other. FIG. 5 shows the worm gear 13 and its output shaft 13b and the worm gear 13
Handle 14 for rotating and driving the handle and its handle shaft 14
a is omitted in the figure.

Now, as described above, the bottom lining in the molten metal container having the bottomed cylindrical shape is applied to the irregularly shaped refractory log-in installation core according to the present invention, which is divided into two or four parts as described above. On top, the fixing column 4 is inserted so as to be located at the center of the molten metal container, and the core fixing bottom 3 is inserted.
Is horizontally placed and fixed, and the refractory can be poured into the molten metal container easily and in a short period of time for construction. However, although not specifically illustrated and described, after the small-sized fixed refractories made of the same material as the irregular-shaped refractory to be poured and placed are placed on the bottom lining at some places, the small-sized fixed refractories placed on the small pieces are placed. In the case where the irregularly shaped refractory logistics core for construction according to the present invention is placed horizontally on an object and used, a desired gap may be provided between the bottom lining and the core fixed bottom 3. Therefore, the irregular refractory can be poured not only on the side wall in the container for molten metal but also above the bottom lining to simultaneously form the bottom lining layer of the irregular refractory. In any case, on the core fixing bottom 3, the core fixing bottom 3 and the bottom lining surface or the adhesive surface of the irregular-shaped refractory lining layer,
Preferably, a plurality of small-diameter holes for drying and / or small-diameter holes for blowing high-pressure air are provided as appropriate to facilitate removal of the core in the upward direction.

[0023]

Test Example As shown in FIGS. 1 to 4, the outer surface of the core is composed of two core side wall constituting members 1 made of steel and a spacer member 2 made of silicone rubber. After the member 1 is extruded outward, the spacer member 2 is extruded outward by the lever 18 and the outer shape of the core for casting a refractory of an indefinite refractory formed on the outer wall surface of the core side wall constituting member 1 and the spacer member 2. But the diameter of the upper end: 2.8m,
The diameter of the lower end is 2.6 m and the height is 3.0 m. The height of the inverted truncated cone is 3.0 m.
The result of using 0 mm for the designed inner and outer movable distance of the core side wall component 1 of 100 mm and the designed inner and outer movable distance of the spacer member 2 of 120 mm for the casting of irregular-shaped refractories. In order to remove the frame after curing and hardening from the casting of the amorphous refractory, the spacer member 2 is moved by the lever 18 toward the inner side where the fixed support 4 is installed.
When the core side wall component 1 is pulled inward by the lever 8 after being pulled by 0 mm, the core side wall component 1 moves only 30 mm inward and outward of the core side wall component 1 by moving the core side wall component 1 by the lever 8. A good edge was formed between 1 and the formed refractory, and the core could be removed from the upper part of the core without damaging the cured refractory. The core was inspected after use, but no evidence of deformation or damage was found in the core side wall component 1 and the spacer member 2.

The edge between the core side wall component 1 and the spacer member 2 and the irregular-shaped refractory is formed with the outer wall surface of the core side wall component 1 and, if necessary, the spacer member 2.
When a mold release agent such as grease oil was applied to the outer wall surface of the core, no irregular refractory adhered to the outer surface of the core, and removal of the frame was extremely easy. .

In addition, not only the bottom lining but also the irregular-shaped refractory poured between the inner surface of the steel shell of the container for molten metal or the inner surface of the fixed-type refractory lined can be constructed in a short time without trouble. .

[0026]

The core for irregularly shaped refractory log-in work for construction according to the present invention described in detail above has a core side wall component in which the outer surface of the core is divided into a plurality of pieces in the vertical direction, and an end of the core side wall component. It is composed of a spacer member for closing the gap between the edges, and each core side wall constituting member and each spacer member are each based on a fixed support installed at a central portion on a core fixed bottom by a link mechanism. has been set to allow translation respectively inward and outward, the spacer member is preferably cross-section outer wall surface of the core side wall configuration member as the cross-section is shorter outer wall surface side trapezoidal its edge In
If the structure is such that the angle formed between the tangent line and the divided end face is easy to fit in the gap between the edges formed at an acute angle , each core side wall component member and each spacer member are moved by the link mechanism, respectively. By expanding and contracting the outer surface of the child, it is possible to easily form a uniform gap of a predetermined size between the inner surface of the molten metal container or the inner surface of the fixed refractory constructed inside the molten metal container. At the same time, it is possible to form a good margin between the refractory which has been poured into the gap, filled and left for a predetermined curing time, and hardened, and the core can be easily and reliably removed from the frame.

That is, a desired uniform gap is formed between the inner surface of the molten metal container and the outer surface of the core and, if necessary, an appropriate gap is also formed at the bottom of the molten metal container. The fixed refractory can be easily and reliably poured into these gaps, and the demolding can be performed smoothly without damaging the hardened refractory and the core.

Since the structure of the core itself is simple, there is almost no failure, and the core can be repeatedly used for a long time without giving irregular deformation or permanent deformation to the core.

In addition, when the refractory lining on the side wall and the bottom in the container for molten metal is repeatedly used while lining the irregular-shaped refractory, including repairing the same, the conventional refractory is almost manually applied. Although the lining work was performed on the fixed refractories, it is possible to simply shift to the lining work for pouring an efficient refractory by simply performing the lining work using the irregular refractory distribution core according to the present invention. Rather, the lining time can be significantly reduced, manual work can be greatly reduced, and workability can be greatly improved and work safety can be improved. And the industrial value is enormous.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of an irregular-shaped refractory log-in installation core according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

FIG. 4 is an enlarged detailed view of a portion C in FIG. 1;

FIG. 5 is a plan view showing another embodiment of the core for irregularly shaped refractory log-in installation work according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core side wall constituent member 2 Spacer member 3 Core fixed bottom 4 Fixed support 5 Thrust bearing unit 6 Screw bar for 1st link operation 6a Coupling 6b Bearing unit 7 First nut 8 First lever 9 Pin 10 Core side wall structure Member bracket 11 pin 12 gear 13 worm gear 13a worm wheel 13b output shaft 13c gear 14 worm gear handle 14a worm gear handle shaft 15 bearing unit 16 second link operating screw rod 16a coupling 17 second nut 18 second lever 19 pin 20 Spacer member bracket 21 pin 22 handle

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidemi Hirano 4976 Nomura Minami-cho, Shinnanyo-shi, Yamaguchi Nisshin Steel Co., Ltd. Shunan Steel Works (72) Inventor Yasushi Ono 5-6-1 Umei Takasago-shi, Hyogo Asahi Inside Glass Company Takasago Plant (72) Inventor Koji Tomoh 2-1 Tsurumachi, Hirohata-ku, Himeji-shi, Hyogo Taihei Kogyo Co., Ltd. Hirohata Branch (56) References JP-A-2-187254 (JP, A) JP-A 63-48955 (JP, U) JP-A 5-24153 (JP, U) JP-A 5-59193 (JP, U) JP-B 61-42675 (JP, B2) JP-B 61-54511 ( JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B22D 41/02 B28B 7/30 F27D 1/16

Claims (11)

(57) [Claims] A fixed support is provided at a central portion on a core fixed bottom (3).
A plurality of core side wall components (1) forming an outer surface of a core supported by the fixed column (4) and an edge of the core side wall component (1) are provided. The outer surface of the core is vertically divided by a plurality of spacer members (2) for closing the gap, and the first link operating screw rod is substantially parallel to the fixed support (4).
A first nut (7) rotatably mounted on the first link operating screw rod (6) and moved along the side surface of the fixed support (4); The core side wall component (1) is connected to a core side wall component bracket (10) fixed to the inner surface of the core side wall component (1) by a first lever (8). 1) is configured to be movable inward and outward with respect to the fixed support (4) in accordance with the rotational drive of the first link operating screw rod (6). Link operation screw rod
A second nut (17) rotatably mounted on the second link operating screw rod (16) and moved along the side surface of the fixed support (4); A second lever (18) is connected to a spacer member bracket (20) fixed to the inner surface of the spacer member (2) by a second lever (18).
Characterized in that the spacer member (2) is configured to be movable inward and outward with respect to the fixed support (4) in accordance with the rotational drive of the screw rod (16) by a link mechanism. You core. 2. The core side wall component (1) is located next to its edge.
The angle between the tangent line on the outer wall and the divided end face is sharp
This core side wall component (1) is formed at a corner.
Spacer member for closing the gap between the edges of (2) during a construction casting monolithic refractory of claim 1 <br/> cross section thereof is formed in a short trapezoidal outer wall surface Child. 3. A bracket (1) fixed to the inner surface of the core side wall component (1) is attached to the first link operating screw rod (6).
The core for irregular-shaped refractory log-in installation work according to claim 1 or 2, wherein a reverse screw is formed on one side in the longitudinal direction at a position corresponding to the height corresponding to (0). 4. When a plurality of sets of reverse screws are formed continuously with the first link operating screw rod (6), each of the first nuts (7) is screwed to each reverse screw. 4. The device according to claim 3, wherein at least one portion is cut between the longitudinal reverse screws, and the cut portion is connected to a coupling (6a) to form a rotatable single screw bar (6). Core for irregular refractory distribution. 5. A bracket (20) fixed to the inner surface of the spacer member (2) is attached to the second link operating screw rod (16).
The core for irregular-shaped refractory logistics installation according to any one of claims 1 to 4, wherein a reverse screw is formed on one side in the longitudinal direction at a height position corresponding to the height. 6. When a plurality of sets of reverse screws are formed continuously with the second link operating screw rod (16), each second nut (17) is screwed to each reverse screw. 6. The screw according to claim 5, wherein at least one portion is cut between the longitudinal reverse screws, and the cut portion is connected to a coupling (16a) to form a rotatable single screw bar (16). Core for irregular refractory distribution. 7. An upper end of the second link operating screw rod (16),
Handle (2) for manually rotating this screw rod (16)
The core according to any one of claims 1 to 6, wherein 2) is provided. 8. A worm wheel in a worm gear (13) mounted on an upper end of a fixed support (4), wherein a gear (12) fixed to an upper end of a first link operating screw rod (6) is provided.
8. The core according to claim 1, wherein the core is engaged with a gear (13c) fixed to an output shaft (13b) of the (13a). 9. The worm gear (13),
9. The core according to claim 8, further comprising a handle (14) for manually rotating the worm in (13). 10. The spacer member according to claim 1, wherein the spacer member is made of rubber or synthetic resin which has excellent elasticity during elastic deformation and which is not deteriorated by a component of a chemically irregular refractory. The core for irregular-shaped refractory log-in installation work according to any one of the preceding claims. 11. The irregular shape according to claim 1, wherein a small-diameter hole for blowing high-pressure air is provided on the bottom surface of the core fixing bottom portion (3) in a contact surface with the hearth lining. Core for refractory log-in installation.