JPH06330131A - Method for assembling and removing molding frame for constructing furnace body refractory of torpedo ladle - Google Patents

Abstract

(57) [Abstract] [Purpose] To easily build a refractory made of amorphous refractory in the furnace body of a towed car and to easily remove the conical formwork assembled at both ends of the furnace body. [Structure] A refractory is constructed by assembling a mold 13 composed of divided upper and lower molds 14 and 15 and a conical mold 16 in a furnace body 11 of a hot metal car. When removing the formwork, after removing the space part closing panel 32, the open space part 31 is inserted into the linear guide 42 placed on the lower formwork 14 and the conical panel transfer carriage 46 is used to move the conical formwork 16 Pull out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling and removing a formwork for constructing a refractory body for a refractory body of a mixed pig car, and more particularly, for constructing a refractory material composed of an indefinite refractory material in the furnace body of a mixed pig car. The present invention relates to a method for assembling and removing a formwork for constructing a refractory structure for a refractory car of a pig iron car, which is easy to remove and can easily remove the conical formwork assembled at both ends of the furnace body.

[0002]

2. Description of the Related Art A horizontally long furnace body having a receiving port at the center of its upper part is rotatably attached to a tow car. In order to withstand the heat of pig iron and the like, heat-resistant bricks are generally thickly stacked on the inner surface of the furnace body on the surface of the permanent bricks over the entire furnace body. However, it is very time-consuming to stack heat-resistant bricks in the furnace in this way,
The workability was poor and many workers were required. Therefore,
In order to solve these problems, the refractory of the furnace body is made into an irregular refractory by using the "core device for kiln furnace refractory lining construction" described in Japanese Patent Application Laid-Open No. 1-179888 filed by the applicant of the present application. It is known how to build things. This one is provided with a form frame by extending a horizontally elongated expandable tubular hollow frame body in the furnace body, and this form frame is supported from inside by a number of laterally movable frame body expansion rings, and thereafter, A refractory is built by pouring an irregular refractory between the furnace body and the formwork. Each frame expansion ring is attached to a laterally extendable ring support arm that is fixed to the lower end of the suspension arm suspended from the piggyhole.

[0003]

However, in the refractory building method of the mixed pig iron furnace body using the core device for building the kiln furnace refractory lining as described above, the mold is formed of a tubular hollow frame which can be expanded and contracted. Therefore, even if it is supported from the inside by many frame expansion rings, the form becomes weak against buoyancy when pouring indefinite refractory, and in order to prevent this, permanent bricks and tubular hollow frame It is necessary to dispose a large number of spacer blocks between them, so that it takes time to attach the spacer blocks and the assembling time of the formwork is long. The present invention has been made in view of such circumstances, and it is easy to build a refractory made of an irregularly shaped refractory in the furnace body of a towed car, and moreover, of a conical formwork assembled at both ends of the furnace body. An object of the present invention is to provide a method for assembling and removing a formwork for building a refractory structure for a refractory car of a pig iron car that is easy to remove.

[0004]

According to the first aspect of the present invention, there is provided a method for assembling and removing a formwork for constructing a refractory structure for a furnace for a refractory car of a mixed pig car, wherein a linear guide is held between both ends of the furnace body. At both ends of the furnace body, a conical formwork in which a space part that can be loosely inserted in the linear guide is detachably covered by a space part closing panel is assembled, and a lower formwork part that is divided at the lower part of the furnace body. While moving along the linear guide to assemble, the linear guide is placed on the lower mold,
Assembling a plurality of upper molds into the upper part of the furnace body, and when removing the molds, the linear guide is held again in the furnace body after the upper molds are disassembled and removed, and the disassembled lower molds are removed. While removing the frame by moving it along the linear guide, the conical mold is pulled out and removed by a conical panel carrier that moves on the lower mold while inserting the space into the linear guide. It is configured.

[0005]

According to the method of assembling and removing the formwork for constructing a refractory structure for a refractory car for a mixed pig car according to claim 1, a linear guide is horizontally held between both ends of the furnace body of the mixed pig car when the formwork is assembled, and then, Assemble the conical formwork at both ends of the furnace body, and at the bottom of the furnace body, move the lower formwork, which is divided into multiple pieces, along the linear guide in the lengthwise direction of the furnace body and assemble it. Is placed on the lower mold and the upper mold divided into a large number is assembled on the upper part of the furnace body, so that the mold can be easily assembled in the furnace body. When removing the formwork,
After disassembling the upper formwork and removing it outside the furnace, hold the linear guide again inside the furnace, move the disassembled lower formwork along the linear guide and remove it outside the furnace, and at the same time, remove the conical mold. The frame is designed to be pulled out by the conical panel carrier that moves on the lower formwork while removing the space cover panel and inserting the open space into the linear guide. It is prevented that the linear guide placed on the formwork hits the tip of the linear guide and cannot be pulled out smoothly. In this way, the formwork is assembled and removed in the furnace body, and it consists of an irregular refractory material in the furnace body. Since the refractory is constructed, the refractory can be easily constructed.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. FIG. 1 is a cross-sectional view showing a state in which a furnace body is used in a method for assembling and removing a formwork for constructing a refractory structure for a mixed pig iron furnace body refractory according to an embodiment of the present invention, and FIG. 2 is a lower formwork. 5 is a longitudinal sectional view of a main part of the furnace body showing the assembling work state of FIG. 3, FIG. 3 is a cross-sectional view of the main part of the furnace body showing the assembling work state of the lower formwork, and FIG. 4 is a S1-S1 cross-sectional view of FIG. 7 is an enlarged cross-sectional view of an essential part showing a suspension structure of a lower panel constituting a lower formwork, FIG. 6 is an enlarged rear view of a conical formwork assembled to a tip portion of a furnace body, and FIG.
8 is an enlarged front view of the suspension device used in the method for assembling and removing the formwork for constructing a refractory structure for a torch car refractory body according to an embodiment of the present invention,
Fig. 9 is an enlarged side view of the suspension device, and Fig. 9 (a) shows a usage state of a conical panel carrier used in the method for assembling and removing the formwork for constructing a furnace for refractory construction of a mixed pig iron furnace body according to an embodiment of the present invention. FIG. 9 (b) is an enlarged side view showing a state in which a side divided conical panel is pulled out by a conical panel carrier used for the method of assembling and removing the formwork for constructing a refractory building for a torch car according to an embodiment of the present invention. FIG. 10 is an enlarged side view showing the same, FIG. 10 is a plan view showing a usage state of the conical panel transportation vehicle, FIG. 11 is a front view showing a usage state of the conical panel transportation vehicle, and FIG. 12 is solidification of an amorphous refractory for building a lower refractory structure. 13 is a cross-sectional view of a main part showing a state in which the lower formwork is separated from the irregular-shaped refractory afterward.
FIG. 4 is an enlarged sectional view of an essential part showing a structure for suspending a lower formwork during a work of separating the lower formwork from an amorphous refractory.

As shown in FIG. 1, a horizontally long furnace body 11 is rotatably attached to a well-known tow car (topeed car), and the inner surface of the iron shell 11a of the furnace body 11 contains a heat insulating brick in advance. A permanent brick 12 is laid. First, the form 13 assembled in the furnace body 11 for constructing a refractory material in the furnace body 11 will be described in detail. Formwork 13
Is a lower mold 14 and an upper mold 15 which are respectively assembled to the upper and lower parts of the furnace body 11, a conical mold 16 which is assembled to both curved end portions of the furnace body 11, a socket 17 at the center of the upper part of the furnace body 11, and It has a socket type frame 18 arranged around it.

As shown in FIGS. 2 to 4, the lower formwork 14 is an iron formwork, and when the furnace body 11 is viewed in a cross section in the longitudinal direction, an arc-shaped lower panel of about the lower third is formed. It is a combination of a large number of 19. A net-shaped work floor 21 is laid on the upper frame 20 of the lower panel 19, and a pair of left and right carriage rails 24 extending in the length direction of the furnace body 11 are provided at the center of each work floor 21. ing. Therefore, in the state where the lower formwork 14 has been assembled in the lower part of the furnace body 11, the work floor 21 spreads over the entire lower formwork 14, and on the work floor 21, the carriage rail 24 extends over substantially the entire length of the furnace body 11. Are continuous. At the center of the upper portion of the lower panel 19, a pair of rollers 14a (see FIG. 5) for moving the panels 19 and 22 in a suspended state along a linear guide 42 described later are detachably attached by bolt connection.

As shown in FIG. 1, the upper mold 15 is a mold made of aluminum or FRP, which is an example of a lightweight member, and has a large number of arch-shaped upper panels 25 connected to the lower mold 14. Is a combination of. Each upper panel 25 is divided into five by two lower divided upper panels 26, two middle divided upper panels 27, and one upper divided upper panel 28. However, the upper panel 25 near both ends of the furnace body 11 is composed of two lower divided upper panels 26 'and two upper divided upper panels 28'.

The conical mold 16 is a mold made of aluminum or FRP, and as shown in FIGS. 1 and 6, one substantially crescent-shaped lower divided conical panel 29 and a pair of side divided conical panels 30. , Is inserted into a space 31 formed between the center of the lower part of the side conical panel 30 and the center of the upper end of the lower conical panel 29.
It is configured by a central divided conical panel 32, which is an example of a space lid cover panel. The lower divided conical panel 29 is assembled to the furnace body 11 together with the lower panel 19 when the lower formwork 14 is assembled, and the side divided conical panel 30 and the central part conical panel 32 are upper panels when the upper formwork 15 is assembled. 25 together with the furnace body 11. Each of the upper and lower molds 14, 15, the conical mold 16, and the piggy-hole form 18 is of a size that can be divided into and taken out from the piggy-hole 17.

Next, a mold framing device 39 for assembling these molds 13 to the furnace body 11 will be described. As shown in FIGS. 2 and 3, the mold framing device 39 is installed between the center portions of both ends of the furnace body 11, and the pair of left and right main guide rails 4 are provided.
0 and a linear guide 42 consisting of a dummy rail 41 detachably connected between these main guide rails 40.
And a pair of suspension devices 43 (see FIGS. 7 and 8) for holding the main guide rails 40 in the furnace body 11, and a crane for loading and unloading the components of the mold 13 and the mold framing device 39 from the socket 17 44 and a conical panel transport carriage 46 (FIGS. 9 to 1) that moves along the carriage rail 24 on the lower formwork 14.
1)) and.

As shown in FIGS. 2-4, the linear guide 42
Main guide rail 40 and dummy rail 41 constituting the
Is provided by connecting two I-shaped steels in parallel to each other (see FIG. 5), and the linear guide 42 connects the tip end portions of both main guide rails 40 to which the dummy rails 41 are connected,
The iron shell 11a is erected above the lower formwork 14 by being fitted into a pair of rail locking fittings 48 provided on the inner surfaces of both ends in the longitudinal direction of the iron shell 11a. Each main guide rail 40 is composed of a relatively thin and short tip rail 49 that is detachably connected to each other by bolts, and two divided main guide rails 50A and 50B. Figure 2
As shown in the partially enlarged view, lower receiving plates 50a are provided below the ends of the respective divided main guide rails 50B on the dummy rail 41 side, and grooves are provided above the both ends of the dummy rail 41. A shaped steel upper support plate 50b is provided. When the main rails 40 and the dummy rails 41 are connected, the left and right lower receiving plates 50a are attached to the dummy rails 41.
Both rails 40, 41 are connected by supporting both end portions of the rails from below while the upper receiving plates 50b cover the end portions of the rails 40 on both sides. Next, with reference to FIGS. 2, 7 and 8, the suspension device 4 for suspending the linear guide 42.
3 will be described in detail.

The suspension device 43 has a screw jack type lifting device 51 disposed on the left and right exhaust ports 11b of the furnace body 11, and the lifting rod 52 of each lifting device 51 is provided.
Extends downward into the furnace body 11 and is detachably bolted to the upper surface of the main guide rail 40 together with a bifurcated connecting member 53 fixed near the lower end thereof. Next, the conical panel transfer carriage 46 that transfers the conical mold 16 will be described.

As shown in FIGS. 9 to 11, the conical panel transfer carriage 46 has a lower height than the upper panel transfer carriage 45 so that the conical frame 16 can be transferred to the furnace body 11 as close to the end as possible. Is. A pair of drive wheels 55 are provided below the base plate 54 of the conical panel transfer carriage 46.
And driven wheels 56 are provided, and four position fixing clampers 57 are provided on the outer sides of the wheels 55, 56.
On the drive wheel 55 side of the base plate 54, the motor 5 for moving the carriage
8 is provided and the sprocket 5 fixed to the shaft
9 and a sprocket 60 fixed to the driving wheel 55, a chain 61 is hung between the motor 5 and the sprocket 60.
It is possible to move on the truck rail 24 by driving 8.

A frame base 72 is erected on the base plate 54, and a fixing metal fitting 73 for the side divided conical panel 30 of the conical form 16 is mounted on the frame base 72 via a lifter 74. There is. The fixing bracket 73 is inclined downward toward the front. The lifter 74 is lowered to fix the side split conical panel 30 to the fixing metal fitting 73, and the lifter 74 is raised to convey it to the vicinity of the end of the furnace body 11. When reaching a predetermined position, the side split conical fitting is fixed by the fixing metal fitting 73. After releasing the fixed state of the panel 30, the side divided conical panel 30 is attached to the furnace body 11 along the inclined surface of the fixing bracket 73.
Slide it to the end of the. That is, by providing the lifter 73, the heavy side divided conical panel 30 can be fixed to the fixing metal fitting 73 without raising the heavy side divided conical panel 30, and the side divided conical panel 30 can be fixed.
When detached from the side, since the side divided conical panel 30 can be slid off from the high position along the inclined surface, the side divided conical panel 30 does not come into contact with the upper portion of the conical panel transfer carriage 46 and damage them.

As shown in FIG. 10, a pair of screw type jacks 75 are provided on the front portion of the base plate 54.
The pushing member 77 of the side divided conical panel 30 is attached to the tip of the rod 76 that is driven forward and backward. The pushing member 77 can be rotated by adjusting a fixing screw interposed in a connecting portion with the rod 76. The jacks 75 are actuated by the respective motors 78 to cause the rods 76 to project, and the side divided conical panels 30 pulled down in front of the conical panel transport carriage 46 are pushed into the ends of the furnace body 11 by the pushing members 77. The tip rail 49 and the split main guide rail 5 which are the minimum components to be brought into the furnace body 11 of the mold framing device 39.
0, dummy rail 41, conical panel carrier 46
Are sized so that they can be put in and taken out from the respective piggy holes 17.

Subsequently, a mixed pig iron furnace body including a method for assembling and removing a mixed pig iron furnace furnace body for refractory construction according to an embodiment of the present invention using the mold 13 and the mold framing device 39. The refractory building method will be described. As shown in FIG. 2, the tip rail 49 and the split main guide rail 50 are carried by the crane 44 into the furnace body 11 through the receiving port 17 and connected to each other to assemble a pair of left and right main guide rails 40 (hereinafter, the furnace body). To put in and take out various members and devices into 11
The crane 44 shall be used. ) Next, the end portion of the main guide rail 40 on the side of the tip rail 49 is pushed into the rail locking metal fitting 48 to be latched, while the main guide rail 4
0 is a lifting device 5 fixed on the exhaust port 11b of the furnace body 11
Fixed to the lower end of the lifting rod 52 of 1 by bolt connection,
The main guide rails 40 are held horizontally by the lifting device 51 (see also FIGS. 7 and 8).

Next, the dummy rail 41 is inserted and fixed between the rollers 14a of the lower panel 19, and the dummy rail 41 is fixed to the receiving port 17
Suspended in the furnace 11 from the main guide rail 50B
The lower side receiving plate 50a supports both ends of the dummy rail 41 from below, and the upper side receiving plate 50b having the groove-shaped steel shape of each dummy rail 41 covers both ends of both side rails 40. The guide rail 40 and the dummy rail 41 are connected to each other to assemble the linear guide 42.
When this assembly is completed and the fixed state of the dummy rail 41 is released, the lower panel 19 is movably suspended by the linear guide 42. After that, the worker
Is moved to a predetermined position in the furnace body 11 along the linear guide 42. Next, the dummy rail 41 is pulled up onto the furnace body 11 by the crane 44, the next lower panel 19 is attached and fixed to this rail 41, the rail 41 is put into the furnace body 11 again, and connected to both main guide rails 40. Then, the worker similarly moves the furnace body 11 to a predetermined position. This operation is performed for all the lower panels 19 while allocating the lower panels 19 to both sides of the furnace body 11. The lower divided conical panel 29 of the conical form 16 is assembled by an operator before the lower panels 19 are arranged at both ends of the furnace body 11.

After that, as shown by the chain line in FIG. 2, adjacent side portions of both main guide rails 40 and dummy rails 41 are connected by a connecting plate 50c. On the upper surface of the lower mold 14 assembled in this way, the work floor 21 extends over the entire area of the lower mold 14, and the carriage rails 24 are continuous in the lateral direction of the furnace body 11 (see FIG. 3). Next, as shown in FIG. 2, between the furnace body 11 and the lower mold 14, a high-purity magnesia-shaped amorphous refractory A for building a lower refractory,
A vibrator (not shown) inserted into the furnace body 11 vibrates and pours it. At this time, the lower mold 14 tries to float up due to the cast indeterminate refractory A, but a plurality of upper and lower taper liners (not shown) are provided between the linear guide 42 and the lower mold 14 at appropriate intervals. By interposing the pair, the linear guide 42 is used as a pressing member and its floating is prevented.

Then, the cast refractory A is cast.
Is solidified, for example, over a day. Next, both the end rails 49 of the linear guide 42 are attached to the rail stoppers 48.
Then, the linear guide 42 is slightly pulled up and returned to the original state by removing it from the split main guide rail 50 and raising and lowering the rod 52 of the elevating device 51 a little as shown in FIG. At this time, the hook plate 14b shown in FIG. 13 is used in place of the roller 14a of the lower panel 19. Thereby, the lower mold 14 is peeled off from the solidified amorphous refractory material A, and the lower mold 14 can be easily removed when the mold is removed. Then, the linear guide 42 and the rod 52 of the lifting device 51
Release the connection state with the linear guide 42 to the lower formwork 1
Place on top of 4. Next, as shown in FIG. 1, the upper mold 15 is attached to the upper part of the furnace body 11 with the lower mold 14 left. This will be specifically described below.

First, the conical panel transfer carriage 46 is put in the furnace body 11 and placed on the carriage rail 24 on the lower mold 14 (see FIG. 10). Then, as shown in FIGS. 10 and 11, one side divisional conical panel 30 is attached to the socket 17.
It is hung from the top of the conical panel transport carriage 46, fixed to the fixing bracket 73 on the upper part of the conical panel transport carriage 46, and then lifted up slightly by the lifter 73.
6 is operated to convey to the vicinity of one end of the furnace body 11 (see FIG. 9A). Then, the side divided conical panel 30
Is slid down along the inclined surface of the fixing bracket 73, and this is placed in front of the pushing member 77. After that, the motor 78
The rod 76 of the jack 75 is projected by the pushing member 77, and the side divided conical panel 30 is pushed by the pushing member 77.
Push it to the end of No. 1 and assemble it on the pre-assembled lower split conical panel 29. In addition, when the side divisional conical panel 30 is arranged in front of the pushing member 77, even if the side divisional conical panel 30 having a large weight is slightly inclined forward and backward, the fixing screw of the connecting portion of the pushing member 77 is adjusted. Then, by tilting the pushing member 77 in accordance with the inclination of the panel 30, the side divided conical panel 30 can be pushed in the facing state.

The other side divided conical panel 30 is also provided.
Also, by the same operation, the lower conical panel 29 is assembled. Then, as shown in FIG. 6, the operator divides the small conical conical panel 32 into small spaces in a space 31 formed between the lower center of the side conical panel 30 and the upper center of the lower conical panel 29. Push in to assemble. Then, the conical panel transfer carriage 46 is moved to a position directly below the piggy port 17, the crane 46 is slightly lifted and inverted, and then the other end of the furnace body 11 is subjected to a similar operation by a similar operation. 16 assembly work is performed. When the assembly is completed, move the conical panel carrier 46 to just below the piggy-hole 17.
It is pulled up by the crane 44. After that, the panels 26 to 28, 26 ', 28', the side divided conical panel 30 and the central divided conical panel 32 constituting the upper panel 25 are carried into the furnace body 11 from the socket 17 and
Assemble the upper formwork 15. Thus, in the furnace body 11,
The upper and lower molds 14, 15 and the conical mold 16 are assembled. In addition, adjacent various panels are bolted to each other so as to be detachable from each other.

Then, as shown in FIG.
A partition tube 93 having a diameter substantially the same as that of the receiving iron port 17 is attached. Then, between the furnace body 11 and the upper mold 15, the furnace body 1
An unshaped refractory B for constructing an upper refractory made of high alumina is poured from both exhaust ports 11b of No. 1 above. When the pouring is completed, the exhaust port 11b is closed and the irregular refractory B is solidified in the same manner as the irregular refractory A. After that, the work of disassembling and removing the upper and lower molds 14 and 15 and the conical mold 16 is performed. The disassembly / removal work will be described in detail below.

First, the upper form 15 is divided and removed.
Next, as shown in FIG. 10, the conical panel transfer carriage 46 is put into the furnace body 11 from the pig iron port 17 and the conical panel carrier carriage 46 is placed in the furnace body 11.
Respectively, where the operator separates the central divided conical panel 32 from the side divided conical panel 30 and removes it, and then the lower divided conical panel 29.
After removing the both side divided conical panels 30 from the above, the connected side divided conical panels 30 are fixed to the fixing brackets 73 of this carriage 46, and the conical panel transfer carriage 46 is moved toward the center of the furnace body 11, Pull out the side divided conical panel 30 (see FIG. 9B). At this time, the side divisional conical panel 30 is pulled out while inserting the opened space 31 into the linear guide 42, so that the side divisional conical panel 30 being pulled out is the lower formwork 1.
It is possible to eliminate the risk that the linear guide 42 placed on the table 4 may hit the tip portion of the linear guide 42 and pull out smoothly. Next, the disassembling / removing work of the lower mold 14 will be described with reference to FIGS.

When disassembling and removing the lower formwork 14,
As shown in FIG. 2, the other lower panels 19 are sequentially pulled up and disassembled. The disassembled lower panel 19 is also pulled out one after another by the crane 44. When removing the lower panel 19, the exhaust port 11 of the furnace body 11 is again used.
The lifting device 51 is attached to c, and the hanging device 4 is attached to the rod 52.
3 is fixed, the main guide rail 50 and the dummy rail 4 are divided.
The linear guide 42 consisting of only one is suspended in the furnace body 11, and the lower panel 19 is moved along the linear guide 42. This facilitates transportation of the lower panel 19. In addition, the lower split conical panel 29 of the conical formwork 16
Are removed when the lower formwork 14 is disassembled. Finally, the partition cylinder 93 attached to the piggy-hole 17 is removed.

Next, as shown in FIG. 1, a pig-head 17 and a pig-head form 18 are arranged around the pig-head 17, and an electroformed mag-chromic material is received between the furnace body 11 and the pig-head form 18. An amorphous refractory material C for a pig-iron refractory material is poured and solidified. Then, after removing the piggy-head formwork 18, a burner (not shown) is taken into the furnace body 11 to heat and dry the irregular-shaped refractories A to C to obtain the upper and lower refractories and the pigtail refractory. To build at the same time.

By assembling the upper mold 15 on the base of the lower mold 14 which is stabilized by being fixed to the lower refractory after solidification, the upper mold 15 can be easily assembled. Further, as described above, the amorphous refractory A for the lower refractory is poured between the lower mold 14 and the furnace body 11 to be solidified, and after the upper form 15 is assembled on the lower form 14, The unshaped refractory B for the upper refractory is poured between the mold 15 and the furnace body 11 to be solidified, and then the upper and lower molds 14 and 15 are disassembled and removed, and the upper and lower portions of the furnace body 11 are removed. Since the irregular refractory materials A and B provided in the furnace body 11 are heated and dried to construct the upper and lower refractory bodies of the furnace body 11,
It becomes easy to build a refractory consisting of amorphous refractories A and B in 1 and, moreover, a panel-connecting formwork 1 as a formwork.
Since 3 is adopted, it is possible to build a refractory with a small dimensional error and obtain good safety in building work.

At the time of removing the formwork, the central divided conical panel 32 is separated from the side divided conical panel 30, and the connected side divided conical panel 30 is connected to the linear guide 32 with the opened space 31. Since the conical panel transport carriage 46 is used to pull it out while inserting it, the side divided conical panel 30 being pulled out is
It is possible to prevent a situation in which the linear guide 42 placed on the lower mold 14 hits the leading end portion of the linear guide 42 and cannot be smoothly pulled out. In addition, after solidifying the unshaped refractories A and B for building the upper and lower refractories, the pigeon mouth form 18 is arranged at and around the pigeon mouth 17, and then the furnace body 11 and the pigeon mouth form 1
Pouring refractory C, which is a separate body from the upper and lower refractories, by pouring the amorphous refractory C for the piggyback refractory that has been poured between Since it can be built, it is possible to independently repair only the pig iron refractory that is easily melted.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and even if there is a design change or operation change within the scope not departing from the gist, the present invention is included. Be done. For example, in the example, after solidifying the unshaped refractory for building the lower refractory, the lower formwork was once separated from the unshaped refractory and returned, and then the upper formwork was assembled. However, the shape of the lower refractory may be solidified, and then the upper formwork may be directly mounted on the irregular refractory. Further, in the embodiment, the conical formwork is divided into four parts, a lower divided conical panel, a pair of side divided conical panels, and a central divided conical panel, and the pig iron refractory formwork is equally divided into two parts. Although the refractory formwork was divided into four equal parts, without being limited to this,
Any of them may be divided into any number as long as the size after division is such that it can be taken in and out from the iron receiving port of the furnace body.

[0030]

According to the method for assembling and removing the formwork for constructing a refractory for a torch car body according to claim 1, the formwork composed of the upper and lower formwork and the conical formwork thus divided is formed in the furnace body. Since the refractory is constructed by assembling it, it is possible to easily construct the refractory composed of the irregular refractory in the furnace body of the mixed pig car. In addition, when removing the conical formwork, after removing the space part lid panel and opening the space part, the conical formwork was pulled out by the conical panel transfer cart while inserting the opened space part into the linear guide,
It is possible to prevent the conical formwork being drawn out from hitting the tip of the linear guide placed on the lower formwork and making it difficult to draw out smoothly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state of a furnace body used in a method for assembling and removing a formwork for building a refractory structure for a refractory car body for a mixed pig iron car according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of a furnace body showing an assembling work state of a lower mold.

FIG. 3 is a transverse cross-sectional view of a main part of a furnace body showing an assembling work state of a lower mold.

FIG. 4 is a sectional view taken along line S1-S1 of FIG.

FIG. 5 is an enlarged cross-sectional view of a main part showing a suspension structure of a lower panel that constitutes a lower mold.

FIG. 6 is an enlarged rear view of the conical formwork assembled to the tip of the furnace body.

FIG. 7 is an enlarged front view of the suspension device used in the method for assembling and removing the formwork for constructing the refractory structure for building a refractory car for a pig iron car according to an embodiment of the present invention.

FIG. 8 is an enlarged side view of the suspension device.

FIG. 9 (a) is an enlarged side view showing a usage state of the conical panel carrier used in the method for assembling and removing the formwork for constructing the furnace body for refractory construction of a mixed pig iron furnace body according to the embodiment of the present invention. (B) It is an expanded side view which shows the pulling-out state of the side divisional conical panel by the conical panel conveyance trolley used for the assembling and removing method of the mixed pig car furnace body refractory construction form concerning the example of the present invention.

FIG. 10 is a plan view showing a usage state of a conical panel carrier.

FIG. 11 is a front view showing a usage state of the conical panel carrier.

FIG. 12 is a cross-sectional view of essential parts showing a separation work state of the lower formwork from the amorphous refractory after solidification of the irregular refractory for building the lower refractory.

FIG. 13 is an enlarged cross-sectional view of an essential part showing a structure for suspending the lower formwork during the work of separating the lower formwork from the amorphous refractory material.

[Explanation of symbols]

 11 Furnace body 11a Iron skin 11b Exhaust port 12 Permanent brick 13 Formwork 14 Lower formwork 14a Roller 14b Hook plate 15 Upper formwork 16 Conical formwork 17 Receptacle mouth 18 Receptacle mouthform 19 Lower panel 20 Upper frame 21 Work Floor 22 Short width lower panel 23 Split short width lower panel 24 Truck rail 25 Upper panel 26 Lower split upper panel 26 'Lower split upper panel 27 Middle split upper panel 28 Upper split upper panel 28' Upper split upper panel 29 Lower split conical panel 30 Side divisional conical panel 31 Space section 32 Central divisional conical panel 39 Formwork framing device 40 Main guide rail 41 Dummy rail 42 Linear guide 43 Suspension device 44 Crane 46 Conical panel carrier truck 48 Rail hook metal fitting 49 Tip rail 50 split main guide rail 50a Lower support plate 50b Upper support plate 50c Connecting plate 50A Divided main guide rail 50B Divided main guide rail 51 Elevating device 52 Elevating rod 53 Connecting member 54 Base plate 55 Drive wheel 56 Driven wheel 57 Clamper 58 Motor 59 Sprocket 60 Sprocket 61 Chain 72 Frame stand 73 Fixing bracket 74 Lifter 75 Jack 76 Rod 77 Push member 78 Motor 93 Partition tube A Amorphous refractory B B Amorphous refractory C Amorphous refractory

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Junji Yamada Inventor Junji Yamada 1-1 Tobahata-cho, Tobata-ku, Kitakyushu, Fukuoka New Nippon Steel Co., Ltd., Yawata Works (72) Ken Nakamura, Inaba, Tobata-ku, Kitakyushu, Fukuoka No. 1 No. 1 within the Yawata Works, Nippon Steel Co., Ltd. (72) Inventor Manabu Inoue No. 1-1 Tobata-cho, Tobata-ku, Kitakyushu, Kitakyushu, Fukuoka Inside the Yawata Works (72) Inventor Yamaura Kenji 1-1 Hibata-machi, Tobata-ku, Kitakyushu, Fukuoka Prefecture (72) Inventor, Takeshi Kimoto 46-59, Nakahara, Tobata-ku, Kitakyushu-shi, Fukuoka Shin-Nippon Steel Machinery Co., Ltd. (72) Inventor Akihiro Doi 1-9-10 Sanno, Yawatahigashi-ku, Kitakyushu City, Fukuoka Prefecture Kuki Industry Co., Ltd. (72) Masahisa Koyama Hachi, Kitakyushu, Fukuoka Prefecture 1-9-10 Sanno, Hatato-ku, Kuki Industry Co., Ltd.

Claims (1)

[Claims] 1. A conical type in which a linear guide is held between both ends of a furnace body, and a space portion which can be loosely inserted into the linear guide is detachably closed by a space portion cover panel at both end portions of the furnace body. While assembling the frame, at the bottom of the furnace body, while moving the divided lower formwork along the linear guide to assemble, place the linear guide on the lower formwork, Assemble the upper mold divided into a large number on the upper part, and when removing the mold, hold the linear guide again in the furnace body after disassembling and removing the upper mold, and disassemble the lower mold with the linear The conical formwork is removed by being moved along a guide, and the conical formwork is pulled out by a conical panel carrier that moves on the lower formwork while inserting the space portion into the linear guide. Method for assembling and removing formwork for refractory building of mixed pig car furnace body.