JP4593992B2 - Slab guide device in continuous casting equipment - Google Patents

Description

  The present invention relates to a slab guide device in a continuous casting facility.

  The continuous casting equipment is well known in the art, and has a basic structure shown in FIG. 5, for example. That is, the molten steel 41 was injected from the tundish 42 through the immersion nozzle 43 into a mold 44 having an internal cooling structure and provided with vibration by a vibration device, and cooled and solidified by the mold 44. A structure in which the slab 45 is supported and carried out by a plurality of slab guide devices 47 including a plurality of guide rolls (hereinafter also referred to as rolls) 46 that are continuously arranged in a curved shape and a horizontal shape immediately below the mold 44. It has. In addition, 48 is a ladle, 49 is a slab drawing apparatus, 50 is a slab cutting apparatus.

  And as said slab guide apparatus, the thing of the structure as shown by the 4th-6th figure of the patent 2908462 (patent document 1) is generally used, for example. FIG. 6 is an explanatory diagram of a slab guide device shown by citing FIGS. 4 and 6 of Patent Document 1. FIG. The structure of the conventional slab guide device will be described with reference to FIG. A plurality of guide rolls 53 are attached to each of the upper frame 51 and the lower frame 52 via a bearing box 54 at a predetermined interval, and the upper frame 51 and the lower frame 52 are opposed to each other on the guide roll side surface. 51 is connected to the lower frame 52 via four tie rods 55. Further, the lower frame 52 is fixed to a reference frame (not shown) of the continuous casting facility and is installed in the continuous casting facility.

  In the slab guide device having the above-described configuration in practical use, in order to protect the machine from the radiant heat of the slab, the frame has an internal water cooling structure and the bearing box has a heat insulating plate. In some cases, a heat insulating cover is installed without cooling the frame with water. In some cases, the outer peripheral portion of the bearing housing may be water-cooled. In addition, a shim is provided between the lower frame seat surface where the bearing housing is installed and the bearing housing, and the shim thickness is adjusted to adjust the roll alignment on the reference side, and the upper frame seat surface where the bearing housing is installed and the bearing A roll gap is adjusted by providing a shim between the box and adjusting the thickness of the shim.

  By the way, in the above-described slab guide apparatus incorporated in a continuous casting facility, the guide roll being cast receives a load (molten steel static pressure / correction reaction force) from the slab, but the initially set roll gap ( In order to obtain good slab quality, it is important to accurately maintain the distance between the paired roll surfaces, which corresponds to the slab thickness) during casting.

  However, in the conventional slab guide device described above, it is difficult to ensure sufficient roll stand (upper and lower frames, tie rods, etc.) rigidity, and the roll stand rigidity is small with respect to the load from the slab. Yes. When a load is applied from the slab, a tensile force acts on the tie rod that connects the upper frame and the lower frame and elastically deforms, so that the roll gap is larger than the initially set roll gap. Since the member connecting the upper frame and the lower frame is long, the amount of deformation (elastic deformation) is also large. In addition, since the load from the slab becomes a load in a direction perpendicular to the upper frame material and the lower frame material, a bending moment is generated in the frame and the frame is bent (the bending of the material due to the bending force is very large) Increasing roll gaps. If the cross-sectional area of the tie rod member is increased and the cross-sectional moment of the upper frame member and the lower frame member are increased so as to increase the rigidity, the roll stand is increased in size and weight.

  Further, during casting, each of the above members is exposed to the radiant heat or high temperature atmosphere of the slab, and each member constituting the frame is thermally deformed in a complicated manner. Since the member temperature rises, the roll gap widens. The part exposed to radiant heat becomes high temperature, and the part not exposed to radiant heat has a relatively low temperature. For this reason, each member constituting the frame also undergoes bimetallic thermal deformation. For this reason, it becomes different from the initial roll gap during casting.

  When the roll gap becomes large in this way, bulging occurs in the slab, tensile force is generated inside the solidified shell, internal cracks occur, and the internal quality of the slab is impaired. When bulging occurs at the end of solidification of the slab, the concentrated molten steel that exists at the grain boundary of the solid-liquid coexisting phase at the crater end flows, causing central segregation and impairing the internal quality of the slab.

  In order to reduce thermal deformation, the inside of the frame may be water-cooled or a heat insulating cover may be installed. In some cases, the heat insulating cover is formed in a water-cooled jacket. The heat insulating cover has a drawback in durability and needs to be periodically replaced. The water cooling structure of the frame and the water cooling structure of the heat insulating cover are pressure resistant because pressure (water pressure) is generated from the inside, making it difficult and expensive to manufacture, requiring a large-scale water treatment facility and water quality management. The cooling piping in the slab guide device is also complicated.

  There is also a cast piece guide device in which an upper frame and a lower frame are formed in an integral structure without using a tie rod. In this slab guide device, when an upper roll is installed, the work is directed upward, and workability is poor and dangerous. When the upper and lower frames are separated, it is possible to incorporate rolls into the upper and lower frames (with the upper and lower frames disassembled), but it is necessary to reverse the upper frame. The work of assembling (merging) the upper frame and the lower frame is required. It is an assembly work for a large structure, and the workability is poor and dangerous.

  In addition, a breakout may occur during casting, or a trouble may occur in which the slab stays in the slab guide device when the operation is stopped such as a power failure. In this case, both ends of the slab remaining in the slab guide device are gas-cut, and the slab is held in the slab guide device and taken out to an off-line maintenance facility. In a roll stand in which the upper frame and the lower frame are integrated, it takes a lot of labor to remove the slab that has been caught.

  In addition, since the roll is worn with casting, it is necessary to regularly perform on-line alignment adjustment and roll gap adjustment. Adjustment is performed by inserting and removing a shim provided between the frame seating surface and the bearing housing. Due to the structure, the approachability is poor, and it takes time and effort.

  Also, if the roll profile / roll pitch is different, the frame shape of the slab guide device will be different, a frame dedicated to the corresponding part will be required, the number of types of frames will increase, and the number of spare machines will also increase.

In addition, troubles may occur in which foreign matter is caught in the slab. If the gap is larger than the set roll gap, it passes between the paired rolls, causing an abnormal load on the rolls, which may cause damage such as roll breakage, bearing (bearing) breakage, and frame deformation. Moreover, although the trouble that slab temperature falls abnormally may generate | occur | produce, since the deformation resistance of a slab increases with slab temperature fall, an abnormal load will generate | occur | produce. In order to prevent equipment damage, a safety mechanism for retracting the roll in the event of an abnormal load is conceivable. However, since the frame exists in the direction in which the roll retracts, the structure becomes complicated, and it is difficult to provide a retract mechanism for each roll. Although a mechanism for retracting the frame itself is conceivable, it must be a large and complex mechanism.
Japanese Patent No. 2908462 (FIGS. 4 to 6)

  The present invention has been made in order to solve the problems as described in the above background art, and its purpose is to have a relatively simple structure and easy assembly / disassembly work, and to be incorporated into a casting line. A slab guide device in a continuous casting facility with good maintainability in a state of being provided.

In order to achieve the above object, the present invention comprises a slab guide device having the following configuration. That is, the slab guide device in the continuous casting facility according to the present invention (Claim 1) is a slab guide device in the continuous casting facility that guides the slab drawn from the mold through a roll having a plurality of pairs of rolls. In which each pair of rolls is pivotally supported on a bearing box via a bearing, and the bearing box of one roll is provided as a reference side bearing box so as to be detachable via a fastener on the reference side frame of the continuous casting equipment, while the other There is no frame for supporting the bearing housing of the other roll, the bearing housing of the other roll is loaded on the reference side bearing housing as the anti-reference side bearing housing, and the anti-reference side bearing housing and the reference side are fastened by a fastener. A bearing box is detachably connected directly .

  In the configuration of claim 1 above, since the structure is such that the reference side bearing box and the anti-reference side bearing box are stacked on the reference side frame with a fastener, the conventional upper roll is supported. No upper frame is required, and no tie rod is required to connect the upper and lower frames. The overall structure of the device is relatively simple and easy to assemble and disassemble, and the rigidity of the device is dramatically increased. be able to. In addition, maintenance in a state where it is incorporated in the casting line is facilitated.

  The slab guide device in the continuous casting equipment according to the present invention (Claim 2) is the invention according to Claim 1, wherein the slab guide device is between the reference side bearing box and the reference side frame or / and the reference side bearing box and the non-reference side. Position adjusting means for adjusting the position in a direction perpendicular to the roll shaft is disposed between the bearing housing and the bearing housing.

  In the configuration of the second aspect, since the position adjusting means is provided, in addition to the operational effect of the configuration of the first aspect, the roll alignment of the reference side roll can be easily adjusted, and the upper and lower rolls The interval between the rolls (corresponding to the thickness of the slab) can be easily adjusted and accurately maintained. Further, since the roll interval can be easily adjusted and accurately maintained, it is possible to expect improvement in slab quality such as internal cracking and center segregation of the slab. Specific examples of the position adjusting means include a shim, a taper liner, and a screw mechanism.

A slab guide device in a continuous casting facility according to the present invention (Claim 3) is a slab guide device in a continuous casting facility that guides a slab drawn from a mold through a roll having a plurality of pairs of rolls. While each pair of rolls is pivotally supported by a bearing housing via a bearing, the bearing housing of one roll is used as a reference-side bearing housing, and a plurality of reference-side bearing housings are detachably provided on a common frame via a fastener, There is no frame for supporting the bearing box of the other roll, the bearing box of the other roll is loaded on the reference side bearing box as an anti-reference side bearing box, and the anti-reference side bearing box and the reference are fastened by a fastener. A side bearing box is directly and detachably connected, and the common frame is provided on a reference side frame of a continuous casting facility.

  The slab guide device in the continuous casting equipment according to the present invention (Claim 4) is the invention according to Claim 3, wherein the slab guide device is between the reference side bearing box and the common frame or / and the reference side bearing box and the anti-reference side bearing. Position adjusting means for adjusting the position in a direction perpendicular to the roll shaft is disposed between the box and the box.

  In the configuration of the third and fourth aspects, since the plurality of reference side bearing boxes of the pair of rolls are provided on the common frame via the fasteners, the configuration of the third aspect has the effect of the configuration of the first aspect. In addition to the effects, and in the configuration of claim 4, in addition to the operation and effect of the configuration of claim 2, a plurality of pairs of rolls can be exchanged at once between online and offline, and disassembly / assembly time and exchange are possible. Shortening of time can be expected.

  The slab guide device in the continuous casting equipment according to the present invention (Claim 5) is the slab guide device according to any one of Claims 1 to 4, wherein the bearing box includes a cooling water channel for internal water cooling on the roll side. Is. With such a configuration, the thermal deformation of the bearing box can be further reduced, the life of the bearing can be expected to be extended, and a conventional heat insulating cover and a complicated water cooling structure can be eliminated.

  According to the present invention, an upper frame for supporting the upper roll is not required, and a tie rod for connecting the upper frame and the lower frame is not required. The overall structure of the apparatus is relatively simple, and assembly and disassembly operations are easy. In addition, the apparatus rigidity can be dramatically increased. In addition, it is possible to expect an improvement in maintainability in a state where it is incorporated in a casting line.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view of a slab guide device in a continuous casting facility according to the present invention, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIG. 3 is a detailed explanatory view of a lower bearing box in FIG. , A is a front view, b is a sectional view, FIG. 4 is a detailed explanatory view of the upper bearing box of FIG. 1, a is a front view, and b is a sectional view. In addition, the slab guide apparatus of this example is installed in the constant circular arc part of a continuous casting installation, and is provided with 4 pairs of rolls.

  In the figure, 1 is a common frame, 2 is a lower roll, 3 is an upper roll, 4 a lower bearing box, and 5 is an upper bearing box. On the upper surface of the common frame 1, a pair of left and right lower bearing box seat surfaces 6 are provided at a total of eight locations, and each pair of seat surfaces 6 is formed to face the arc center line direction. The lower bearing box seating surface 6 is provided with a lower bearing box positioning key 7. The common frame 1 is attached to a reference side frame (not shown) of the continuous casting facility.

  Both the lower roll 2 and the upper roll 3 have a water internal cooling hole 8 formed in the core portion to form a water cooling structure, and rotary joints 9 are provided on both sides of the internal roll water cooling hole 8. And the bearing 10 is attached to the shaft part of the right and left of the lower roll 2, and the lower bearing box 4 is attached via the bearing 10. FIG. A bearing 10 is also attached to the left and right shaft portions of the upper roll 3, and an upper bearing box 5 is attached via the bearing 10. In addition, in this example, in order to raise the flow velocity of cooling water, the case where the core 11 is installed is illustrated. Further, this example is a case of a free roll, and when a drive roll is used, a universal spindle is attached to one end of the roll, and therefore, a return-type rotary joint may be installed instead of the rotary joint 9, and the drive The present invention is also applicable to a slab guide device provided with a roll.

  As shown in FIG. 3, the lower bearing box 4 has a cooling water passage 12 formed therein, and a slab side (that is, a roll side) of the lower bearing box 4 has a water-cooled jacket structure to block radiant heat from the slab 13. The temperature rise of the bush bearing 10 and the thermal deformation of the lower bearing box 4 are prevented. This eliminates the need for an exterior heat insulating plate. The lower bearing box 4 is fastened by lower bearing box fasteners (bolts and nuts) 14 with a lower bearing box positioning key 7 interposed on the lower bearing box seating surface 6 of the common frame 1. A lower bearing box shim 15 is provided between each lower bearing box seating surface 6 and the lower bearing box 4 of the common frame 1, and the roll alignment of the lower roll 2 is adjusted by the lower bearing box shim 15. Is done. There is also a method of adjusting the roll alignment by replacing the lower bearing box shim 15 with a taper liner. In FIG. 3, 16 is a cooling water supply port, and 17 is a drainage port.

  As shown in FIG. 4, the upper bearing box 5 has a cooling water passage 18 formed therein as in the lower bearing box 4, and the slab side (that is, the roll side) of the upper bearing box 5 has a water cooling jacket structure. The radiant heat from the slab 13 is cut off to prevent the temperature rise of the bearing 10 and the thermal deformation of the upper bearing box 5. This eliminates the need for an exterior heat insulating plate. The upper bearing box 5 has a liner 19, an upper and lower bearing box positioning key 20 and an upper and lower bearing box shim 21 interposed on the lower bearing box 4 and upper and lower bearing box fasteners (bolts and nuts) 22. It is concluded by. The distance (roll gap) between the lower roll 2 and the upper roll 3 is adjusted by the shim 21 between the upper and lower bearing boxes. There is also a method of adjusting the roll gap by replacing the shim 21 between the upper and lower bearing boxes with a taper liner. In FIG. 4, reference numeral 23 denotes a cooling water supply port, and 24 denotes a drainage port.

  In order to protect the bearing 10, a seal 25 is provided between the lower roll 2 and the lower bearing box 4 and between the upper roll 3 and the upper bearing box 5. In this example, since the bearing box itself has a water cooling structure, the seal 25 does not increase the temperature of the seal installation portion even if it is exposed to a high temperature environment, and a rubber seal can be used. Since such a seal 25 is provided, the slab guide device is used in a spray spray environment / saturated steam atmosphere, but water and steam can be prevented from entering the 10 parts of the bearing. In addition, intrusion of scale sludge can be prevented.

  The slab guide device in the continuous casting equipment having the above-described configuration is used by installing a repetitive unit along the drawing direction of the slab on the reference side frame provided below the mold of the continuous casting equipment (not shown). However, it has the following various effects in its use state. That is, since there is unsolidified molten steel inside the slab, a molten steel static pressure acts downward on the lower roll 2 and upward on the upper roll 3. A structure in which the lower bearing box 4 and the upper bearing box 5 are attached to the common frame 1 without using the necessary roll stand (upper frame, lower frame, tie rod, etc.), and the common frame 1 is further provided on the reference side frame. As a result, the static pressure of the molten steel becomes an internal force between the lower bearing box 4 and the upper bearing box 5, thereby eliminating the disadvantage that the roll gap is enlarged due to the deformation of the roll stand. As a result, there is no need to worry about the deformation caused by the extension and bending of the roll stand component, which is a disadvantage of the prior art, and the deformation site is limited to the bearing boxes 4 and 5, and a small area is elastically deformed. The deformation amount is also reduced. If only the bearing boxes 4 and 5 are made to be highly rigid, the rigidity can be increased efficiently.

  Also, in the vertical bending type continuous casting equipment, the slab 13 is gradually corrected by the rolls 2 and 3 in the process in which the slab 13 is drawn from the vertical part directly under the mold to the arc part and further from the arc part to the horizontal part. The rolls 2 and 3 are subjected to anti-correction force from the cast slab 13, but in this case as well, there is no roll stand that was necessary in the prior art, so the roll stand constituent members that are disadvantages of the prior art There is no need to worry about deformation due to the extension and bending of the film.

  Further, the roll stand according to the prior art involves complicated deformation due to the radiant heat of the slab. However, in the slab guide device having the above configuration, the slab 13 side of the bearing boxes 4 and 5 is internally water-cooled. Since the temperature of 4, 5 itself does not increase, the roll gap does not expand due to thermal expansion. In addition, the initial set value of the roll gap can be accurately maintained even during casting.

  Further, there may be a problem that the slab 13 is solidified while staying in the slab guide device due to a breakout of the slab 13 or a failure of a continuous casting facility. In this case, if the upper and lower bearing box fasteners 22 are removed, the upper roll 3 can be opened and the staying slab can be easily removed. This operation can be performed either in a state where the slab guide device having the above configuration is incorporated in the continuous casting facility (online) or in a state where it is removed from the continuous casting facility (offline).

  Further, in the roll stand of the prior art, the upper roll is an upward assembly work, so there is a difficulty in the setting work. However, in the slab guide device having the above configuration, the upper bearing box 4 is loaded on the lower bearing box 5 and moved up and down. All that is required is fixing with the inter-bearing box fasteners 22, and the assembly work is easy and safe. Also, in assembling the lower roll 2 to the common frame 1, the upper frame of the roll stand is present above the head in the prior art, but the slab guide device having the above structure is assembled in an open state where the upper frame does not exist above the head. Work is possible and assembly workability is good.

  Further, since the roll stand (slab guide device) is used in a high temperature atmosphere / saturated steam atmosphere, the roll stand frame is significantly damaged. In addition, powder casting causes acid water and is severely damaged. For this reason, the life of the roll stand of the prior art is short and needs to be updated regularly. However, in the cast piece guide device having the above configuration, it is only necessary to update the bearing boxes 4 and 5. Further, although the common frame 1 exists, the damage is slight because it is located below the pass line. Even when updating, the common frame 1 is simple and can be implemented at low cost.

  Further, in the conventional roll stand, even if the roll diameter is the same and the roll profile and roll pitch are different, a dedicated roll stand must be provided depending on the installation site, and a spare machine must be provided. In the guide device, only the common frame 1 can be dedicated, and the thickness of shims and liners provided between the common frame 1 and the lower bearing box 4 and between the upper and lower bearing boxes 4 and 5 can be adjusted.

  Moreover, in the roll stand of the prior art, when used for a long period of time, foreign matter accumulates inside the roll stand with water cooling, but in the cast piece guide device with the above configuration, the bearing boxes 4 and 5 are periodically cleaned, It may be updated regularly.

  In the above embodiment, the slab guide device in which a plurality of pairs (four pairs in this example) of the upper and lower rolls 2 and 3 are installed using the common frame 1 is described as an example. The bearing surface 6 for the lower bearing box may be formed on the reference side frame of the continuous casting facility, and the lower bearing box 4 may be provided there. Even if configured in this way, the above-described effects can be obtained. Moreover, although the case where the distance between the four pairs of rolls is relatively narrow was exemplified, this is because the slab guide device on the side close to the mold in the slab drawing direction of the continuous casting facility is taken as an example, and the installation location (for example, the vertical portion, Needless to say, an appropriate interval and number are selected depending on the curved portion, the horizontal portion, and the portions of these portions on the side closer to and far from the mold. Further, as a continuous casting facility, a common frame 1 such as a slab guide device using a common frame 1 and a portion provided with a slab guide device constituted by a pair of upper and lower rolls directly on a reference side frame of the continuous casting facility. It may be installed in a mixed manner with the part provided via the.

  In the drawings (FIGS. 1 and 2) of the above embodiment, the adjacent upper bearing housings 5 are connected by connecting fasteners (bolts and nuts) 26. The slab 13 is pulled out in the downstream direction by a pinch roll (not shown). However, if an abnormality such as a foreign object biting into the slab 13 occurs, a large force acts in the downstream direction. The connecting fastener 26 is intended to prevent the bearing housings 4 and 5 from overturning at the time of these abnormalities. In addition to the bolts and nuts, for example, the connection fastener 26 is a plate of connection fasteners, provided with bolt insertion holes at both ends, and screws for fitting the bolts to the upper bearing box 5. A method may be used in which holes are provided and the adjacent upper bearing boxes 5 are connected to each other by plate-like fasteners via the bolts. Moreover, when it has sufficient intensity | strength in the fastener 14 for lower bearing boxes and the fastener 22 between upper and lower bearing boxes mentioned above, it can also abbreviate | omit.

  In the drawings of the above embodiment (FIGS. 1 and 2), an automatic pipe attachment / detachment mechanism 27 is provided on the lower surface of the common frame 1. By providing this automatic pipe attaching / detaching mechanism 27, the pipe can be automatically connected if the slab guide device is mounted on the reference side frame (not shown). A cooling water header pipe 28 is connected to the automatic pipe attachment / detachment mechanism 27, and cooling water is supplied from the cooling water header pipe 28 to the bearing boxes 4, 5 and the rolls 2, 3. The cooling water supplied to the bearing housings 4 and 5 and the rolls 2 and 3 may be supplied in parallel from the cooling water header pipe 28, but the in-machine piping becomes complicated and the flow velocity is ensured. Therefore, a large amount of cooling water is required. In order to eliminate this, the cooling water of the bearing boxes 4 and 5 and the rolls 2 and 3 may be connected in series. For example, in FIG. 2, “water supply → lower bearing box (left side) → lower roll → lower bearing box (right side) → upper bearing box (right side) → upper roll → upper bearing box (left side) → drainage”. Since the water supply port and drainage port of each cooling target (bearing box / roll) are close to each other, the connection pipe between the water supply port and the drainage port can be short, and the piping becomes simple. If the connecting pipe is flexible (rubber hose / flexible tube), adjustment with a shim can be easily performed.

  In the drawings of the above embodiment (FIGS. 1 and 2), 29 is a bracket for providing the guide roller 30. The bracket 29 is fastened to the common frame 1. The guide roller 30 is used when replacing the slab guide device, and rolls along a replacement guide rail (located on the machine side, not shown). Thus, when replacing the slab guide device, it is performed by moving along the replacement guide rail, so that the replacement work of the slab guide device is safe and easy. Further, since the bracket 29 is fixed to the common frame 1, an excessive force does not act on the bearing boxes 4, 5 and the like. Note that the bracket 29 and the guide roller 30 can be omitted when the slab guide device is replaced only by a crane operation or when the slab guide device is a horizontal portion.

It is a front view of the slab guide apparatus in the continuous casting equipment which concerns on this invention. It is XX sectional drawing of FIG. It is a detailed explanatory view of the lower bearing box of FIG. 1, wherein a is a front view and b is a YY sectional view of a. It is a detailed explanatory view of the upper bearing box of FIG. 1, wherein a is a front view and b is a ZZ cross-sectional view of a. It is a front view which shows the outline | summary of a continuous casting installation. It is explanatory drawing of the slab guide apparatus in the conventional continuous casting installation, Comprising: a is a front view, b is a side view.

Explanation of symbols

1: Common frame 2: Lower roll 3: Upper roll 4: Lower bearing box 5: Upper bearing box 6: Seat surface for lower bearing box 7: Positioning key for lower bearing box 8: Water cooling hole inside roll 9: Rotary joint 10: Bearing 11: Core 12: Cooling water passage 13: Cast slab 14: Lower bearing box fastener 15: Lower bearing box shim 16: Water supply port 17: Drainage port 18: Cooling water channel 19: Liner 20: Vertical bearing box Interposition positioning key 21: Shim for upper and lower bearing box 22: Fastener for upper and lower bearing box 23: Water supply port 24: Drainage port 25: Seal 26: Connection fastener 27: Automatic pipe attachment / detachment mechanism 28: Cooling water header pipe 29: Bracket 30: Guide roller

Claims (5)

In a slab guide device in a continuous casting facility that guides a slab drawn from a mold through a roll having a plurality of pairs of rolls, each pair of rolls is supported on a bearing box via a bearing, and one roll As a reference side bearing box, the reference side frame of the continuous casting equipment is detachably provided via a fastener, but there is no frame for supporting the bearing box of the other roll, and the bearing box of the other roll Are cast on the reference side bearing box as an anti-reference side bearing box, and the anti-reference side bearing box and the reference side bearing box are directly and detachably connected by a fastener. Single guide device.   2. A slab guide device in a continuous casting facility according to claim 1, wherein the roll shaft is directly between the reference side bearing box and the reference side frame and / or between the reference side bearing box and the non-reference side bearing box. A slab guide device in a continuous casting facility, in which position adjusting means for adjusting the position in the direction of movement is provided. In a slab guide device in a continuous casting facility that guides a slab drawn from a mold through a roll having a plurality of pairs of rolls, each pair of rolls is supported on a bearing box via a bearing, and one roll And a plurality of reference side bearing housings are detachably provided on a common frame via a fastener, while there is no frame for supporting the bearing box of the other roll , and the other roll Is mounted on the reference side bearing box as an anti-reference side bearing box, the anti-reference side bearing box and the reference side bearing box are directly and detachably connected with a fastener , and the common frame is continuously connected. A slab guide device in a continuous casting facility, which is provided on a reference side frame of the casting facility.   4. A slab guide device in a continuous casting facility according to claim 3, wherein the roll shaft goes straight between the reference side bearing box and the common frame or / and between the reference side bearing box and the non-reference side bearing box. A slab guide device in a continuous casting facility in which position adjusting means for adjusting the position of a direction is disposed. The slab guide device in the continuous casting equipment according to any one of claims 1 to 4, wherein the bearing box is provided with a cooling water passage for internal water cooling on the roll side.

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