JP2598480Y2 - Insulation door structure of heat insulation room of transport trolley - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating room heat insulating door structure of a trolley for transporting a high-temperature and long heavy object, for example, a high-temperature slab obtained by continuous casting under temperature control.

[0002]

2. Description of the Related Art In the production of steel products, the method of transferring from a conventional ingot making and lumping process to a rolling process and then processing to a rolling process through a continuous casting process is shifted to shorten the process to improve the yield. And lower costs have been achieved. In shortening this process, it is important to make the continuous casting process and the subsequent rolling process continuous, particularly from the viewpoint of energy saving. However, in an existing steel mill, since a continuous casting plant and a rolling plant are separately provided, a high-temperature slab obtained by continuous casting is usually transported by a dedicated cart.

[0003] Insulated doors of this type of truck are disclosed in Japanese Utility Model Publication No. 60-1462.
A retractable pivotable door opening and closing mechanism disclosed in Japanese Patent Publication No. 98 has been devised.

[0004]

The method disclosed in Japanese Utility Model Application Laid-Open No. 60-146298 performs two operations of rotation and expansion and contraction, so that the reliability of mechanical parts is low, and the life of the refractory of the part that expands and contracts is short. There was a disadvantage. Further, a door for taking in and out the cast slab is provided on the side surface of the bogie, and there is a drawback that the opening and closing device of this type is so protruding that interference with existing equipment occurs.

As described above, the above-mentioned prior art generally has the following common problems. That is, a decrease in the temperature when the high-temperature slab is conveyed is important in omitting or reducing the heat treatment in the subsequent rolling. In order to avoid the temperature drop of the hot slab, improve the heat insulation performance of the bogie during transportation, shorten the time to reach the destination such as a rolling mill, and minimize the opening area when loading and unloading the hot slab. It is required to reduce the amount of heat dissipated. However, the above-mentioned conventional transport cart has a drawback that the opening area is large and heat dissipation is large. In addition, there is a drawback in that ancillary equipment is required for opening and closing the door of the heat insulation room, and the occupied area and equipment cost are large.

Another drawback is that the refractory has a short service life due to physical factors such as sliding / bending or a large temperature change, and thus requires much labor for maintenance. As a result, the slab transport efficiency is low. It also has the adverse effect of reducing An object of the present invention is to provide a new heat insulation room heat insulation door structure for a transport vehicle that can minimize the opening area when loading and unloading high-temperature long objects such as high-temperature slabs and improve the life of refractories. Things.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a heat insulating door structure for a heat insulating room provided on a carriage for transporting a high-temperature long object. An upper door that is opened and closed and driven upward and downward to take in and out high-temperature long objects, and a lower door that is opened and closed and driven downward to insert and remove an extractor for high-temperature long objects the upper and lower 2 Dantobira structure comprising, in the et, on the inside of the upper door, that is provided by fixing the upper door frame across the refractory material having a flexibility to the transverse member with inner and outer pair of rounded It is a heat insulating room heat insulating door structure of a transporting truck.

[0008]

According to the present invention, the opening area of the heat insulation chamber when loading and unloading slabs is minimized, and the amount of heat dissipated is reduced. Further, since there is no sliding or bending of the refractory, the life is improved, the frequency of maintenance is reduced, and as a result, the efficiency of transporting high-temperature long objects such as high-temperature slabs can be improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described for the case of transporting a slab at a high temperature (about 1100 ° C.). FIG. 4 is a side sectional view of the truck according to the present invention, and FIG. 5 is a sectional view taken along line AA of FIG. The trolley 1 is roughly divided into a bogie 2, an electric room 5 provided at both ends of the vehicle for running control, and a heat insulation room 3 in the center of the trolley 1 for storing the high-temperature slab 9. The heat insulation room 3 includes an upper door 4 and a lower door 10, a skid 7 which is a slab receiving seat, columns, beams, and refractories. Further, the upper door 4 has a cross member 25 for joining the upper door frame 16 and the flexible upper door refractory 18, and the lower door 10 has a lower door frame 19 and a lower door refractory 20.
It is composed of

The high-temperature slab 9 is transported by the extractor 8 while being placed on the skid 7 in the heat insulation room 3. The upper and lower doors 4 and 10 must be opened when the high-temperature slab 9 is loaded in the heat insulation room 3 and when unloading, but the feature of the present invention is that the opening area thereof is minimized. That is, the door is used only in a minimum range necessary for loading and unloading of the high-temperature slab 9. A lower door 10 for loading an extractor 8 is provided in a lower half of the side surface of the cart 1, and an upper door 4 for loading a slab is provided in an upper half. A side wall refractory is provided in a region where the extractor 8 is not inserted. As for the refractory inside the heat insulation room 3, steps around the skid 7 and the charging portion of the extractor 8 are provided as shown in FIG. The dimensions of the lower door 10 may be set to the minimum necessary in consideration of the deflection of the extractor 8 to be loaded, the play, the sinking amount of the truck 1, and the stopping accuracy. Similarly, regarding the upper door 4, the position of the driving device 6 and the upper open limit 4 ′ of the upper door 4 may be set in consideration of the above error factors.

FIG. 5 shows the closed state 4 and open state 4 'of the upper door and the closed state 10 and open state 10' of the lower door together.
In this figure, the opening and closing of the upper door 4 is connected to a driving device 11 disposed on the lower beam 1a of the bogie 1 via a speed reducer from a driving device 6 installed above the thermal insulation room 3. It is opened and closed by pin 15 and link 14. When the opening / closing moment is large as in the present invention, a spring (not shown) may be provided to cope with a trouble of the driving device 6 and to reduce a load during normal use.

The portion C where the upper door 4 and the lower door 10 are joined is formed so that the lower door 10 is first closed and then the upper door 4 is closed so as to be able to overlap with each other in order to prevent the dissipation of hot air during transportation. I have to. In the construction of the refractory according to the present invention, the lower door 10 may be constructed entirely of the refractory by hitting a stud (not shown) because the member is small and the opening / closing torque is small.
However, if the same method is used for the upper door 4, the weight becomes too large and the opening / closing device becomes too large.
The upper door refractory 18 is joined to the upper door frame 16 via the horizontal members 23 and 25 because it is necessary to select a flexible upper door refractory 18 so as to overlap with the above. The upper door 4 only rotates and does not expand and contract, and even if the portion B that repeats bending when opening and closing the door is damaged, the upper door refractory 18 in the double structure A is a refractory in the heat insulation room. The structure has high reliability because there is no dissipation of hot air.

FIG. 1 is an enlarged perspective view of a portion B in FIG. The upper door refractory 18 of the upper door 4 is traversed through the opening 26 provided on the side surface of the cross member 25 using a round material 23 for the heat insulation room and a cross member 25 for the outside air using rounded materials. It is connected to the material 25 and fixed with the fastening nut 27. That is, the cross member 25 is shown in FIG.
As shown in FIG. 7, the fixing brackets 28 are welded to the side surfaces of the plurality of fixing brackets 28, and the fixing brackets 28 are connected to the connection fittings 29. The connection fitting 29 is welded to the receiving fitting 32 and is fixed to the upper door frame 16 via a fitting 34 joined to the receiving fitting 32 by a bolt 33. In FIGS. 1 and 2, elliptical cross members 23 and 25 are used. However, the refractory is formed in a cylindrical shape or a semi-circular shape as shown in FIG. Any shape that does not cause damage may be used.

Although the present invention has been described on the premise that the present invention conveys a high-temperature slab or the like, the scope of the present invention is not limited to this, and it is apparent that the present invention can be widely applied to conveying high-temperature long objects. It is.

[0015]

[Effects of the Invention] According to the present invention, the amount of heat dissipated during loading / unloading of high-temperature long objects such as high-temperature slabs and during traveling of the bogie is reduced, the heating furnace charging temperature is improved, and the refractory life is improved. I do. Therefore, it is possible to transport the high-temperature slab by using the transporting cart according to the present invention, and to make the continuous casting process and the rolling process continuous. That is, (1) the upper and lower door system is adopted and the open / close area is minimized, so that the amount of heat dissipated can be reduced. (2) Since there is no expansion / contraction part and the contact part between the interior of the heat insulation chamber and the upper door has a double structure, the life of the door refractory is improved. (3) Since the time required for refractory repair is shortened, the operation rate of the bogie is increased, and the carrying capacity is improved. (4) An increase in the heating furnace charging temperature can be achieved by reducing the amount of heat dissipated. (5) Damage to the flexible refractory fixed inside the upper door can be reduced. As described above, the overall effect of the present invention is great.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a heat insulation room heat insulating door structure of the present invention.

FIG. 2 is a cross-sectional view illustrating the heat insulation room heat insulating door structure of FIG.

FIG. 3 is a perspective view showing another heat insulation room heat insulating structure of the present invention.

FIG. 4 is a vertical cross-sectional view of the transport vehicle of the present invention as viewed from the side.

FIG. 5 is a transverse sectional view taken along the line AA of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bogie 2 Bogie bogie 3 Heat insulation room 4 Upper door (door closed state) 5 Electric room 6 Drive 7 Skid 8 Extractor 9 High temperature slab 10 Lower door (door closed) 11 Drive 14 Link 15 pin 16 Upper door frame 18 Upper door refractory 19 Lower door frame 20 Lower door refractory 23 Cross member (inside) 24 Through bolt 25 Cross member (outside) 27 Fastening nut 28 Fixing bracket 29 Connecting bracket 30 Fastening bolt 32 Receiving bracket 33 Fastening bolt

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshitane Matsukawa 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Pref. 1-chome (without address) Kawasaki Steel Corporation, Mizushima Works (72) Inventor Toshihiro Konishi 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. 1-chome, Kawasaki-dori, Mizushima, Kurashiki-shi, Pref. Kawasaki Steel Corporation Mizushima Works (72) Inventor Tadashi Miyashita 1-1-1, Shibaura, Minato-ku, Tokyo (Toshiba Building) Toshiba-uchi Corporation (72) Inventor Yasuyuki Hayashi 7th Mukaiyama, Hagi-shi, Otowa-cho, Hoai-gun, Aichi Prefecture Inside Isolite Industry Co., Ltd. (56) References JP-A-6-71322 (JP, A) JP-A-5-104124 (JP, A) JP-A-5-92204 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C21D 1/00 B21B 39 / 00 C21D 9/00 101

Claims (1)

(57) [Scope of request for utility model registration] In a heat insulating door structure of a heat insulating room provided on a carriage for transporting a high-temperature long object, the heat-insulating door structure is provided so that the high-temperature long object can be taken in and out of a side surface of the heat insulating room where the high-temperature long object is loaded. an upper door is opening and closing Te, and the upper and lower 2 Dantobira structure comprising a lower door which is opened and closed driven by俯迎downward to out the extractor for high temperature long products, further wherein the door
Inside, a pair of rounded inner and outer refractories
A heat insulating door structure for a heat transfer room of a transport trolley, which is fixed to an upper door frame between certain cross members .