JP5510804B2 - Guide roll segment of continuous casting machine - Google Patents

Description

  The present invention relates to a guide roll segment that shares a frame and a guide roll in a continuous casting machine.

  In a continuous casting machine, molten steel is poured into a mold, guide roll segments in which a plurality of guide rolls for guiding the slab to the lower side of the mold and pulling it out are arranged in the direction of slab extraction.

  FIG. 4 is a schematic view of the entire continuous casting machine. In FIG. 4, the molten steel 1 is poured into the mold M from the tundish through the immersion nozzle, and the slab 12 obtained while being cooled and solidified by the mold is a plurality of support rolls SR arranged at the lower part of the mold. And a structure that is carried out while being curvedly supported through a slab support structure constituted by a plurality of guide roll segments composed of a plurality of guide rolls 13 connected to the lower side. The casting radius of the multi-point bending correction area of the curved portion formed by a plurality of guide roll segments is gradually increased in the casting radius (R1 to R8) in the roll segment at the end of the curved portion and connected to the horizontal portion (Patent Document 1). reference).

  In the guide roll segment, a plurality of guide rolls are pivotally supported at predetermined intervals on the upper frame and the lower frame via chock.

  Since the guide roll segment is in a harsh state in which high-temperature slabs, cooling water, steam, scales, and the like exist, when the replacement is necessary, it is performed by taking in and out the guide roll segment unit. In general, the guide roll segment needs to be replaced with a spare guide roll segment every several months for maintenance such as replacement of wear rolls, replacement of bearings and seals, and inspection of other parts.

  As shown in FIG. 5, a guide roll segment for replacement is prepared for each guide roll segment. In the online state shown in FIG. 5 (a), the X-th guide roll segment XSEG and the Y-th guide roll segment YSEG adjacent to the X-th guide roll segment XSEG in the multi-point bending correction area of the continuous casting machine are respectively connected to the upper frame 14 (17). The upper guide roll 15, the lower frame 16 (18), and the lower guide roll 15 are configured.

  In FIG. 5B, the Xth and Yth guide roll segments have the same spare guide roll segments for replacement. The reason why each guide roll segment has a spare guide roll segment is that, in the adjacent guide roll segments in the multi-point bending correction area, the arc radius of the bending correction area is different and the arc length between the guide rolls is different. Because the horizontal distance and height of adjacent guide rolls are different, each guide roll segment is treated as an independent separate guide roll segment, so it is necessary to also have a spare guide roll segment. is there.

JP 2003-025052 A

  However, in the conventional guide roll segment, each guide roll segment has a spare guide roll segment, so that the number of spare guide roll segments increases, which increases the cost and maintenance space. There is a problem that must be secured.

  Accordingly, the present invention provides a guide roll that can reduce the number of guide roll segments by sharing the upper and lower frames and the upper and lower guide rolls in adjacent guide roll segments in the multi-point bending correction area of a continuous casting machine. Provide segments.

The present invention relates to an adjacent guide roll segment in a multi-point bending correction area of a continuous casting machine having an upper frame and an upper guide roll on the upper side and a lower frame and a lower guide roll on the lower side . Each of the upper frame and the upper guide roll is composed of an upper frame of the same size and an upper guide roll of the same diameter, and the lower frame and the lower guide roll are of a lower frame of the same size and a lower guide roll of the same diameter The horizontal distance and the vertical height of the guide rolls of the adjacent guide roll segments are configured so that a guide roll position adjusting spacer is provided between the chock that supports the respective guide rolls and the frame. It is installed and adjusted .

  In the above configuration, the guide roll height is adjusted by overlapping the guide roll position adjusting spacer and the thickness is changed, and a plurality of guide roll position adjusting spacers are formed on the front surface and / or the back surface, A concave portion into which the convex portion is fitted is formed on a surface facing the convex portion, and a horizontal position is adjusted by a position of the convex portion and the concave portion.

  According to the present invention, in the adjacent guide roll segments in the multipoint bending correction area where the horizontal distance between the guide rolls and the guide roll height are different, the guide roll position adjusting spacers are adjacently disposed between the chock and the frame. Since the upper and lower frames of the guide roll segment can be shared, the number of guide roll segments owned can be reduced.

  The spare guide roll segments that share the upper and lower frames and the upper and lower guide rolls of the present invention can be replaced alternately by repairing the removed guide roll segments by shifting the maintenance timing. It is possible to reduce the number of guide roll segments.

  In addition, it becomes easier to secure space in the maintenance area due to the decrease in the number of guide roll segments.

It is explanatory drawing about sharing of the upper-lower frame and upper-lower roll in the guide roll segment of this invention. 1 shows Embodiment 1 of a guide roll segment of the present invention, (a) is a sixth guide segment, (b) is a seventh guide roll segment adjacent to the sixth guide roll segment, and (c) is a bearing box. (D) is a view showing a roll position adjusting spacer. It is explanatory drawing of arrangement | positioning of a guide roll. It is the schematic of a continuous casting machine. It is explanatory drawing of the conventional preliminary | backup guide roll segment.

  In FIG. 1 (a), the X-th guide roll segment (XSEG) and the Y-th guide roll segment (YSEG) adjacent to the X-th guide roll segment (XSS) in the multi-point bending straightening area of the continuous casting machine are the same size upper frame. 1 and the lower guide roll 2 having the same diameter and the lower frame 3 having the same size and the lower guide roll 2 having the same diameter. In FIG. 1, the guide roll 2 is 8 pieces / segment, and is supported by the bearing of the roll chock 9 (FIG. 2), and the roll chock 9 has the same size on the upper side and the lower side.

  Guide roll position adjusting spacers 5, 6, 7, and 8 are installed between the roll chock 9 and the frame 1, and the distance between the horizontal guide rolls and the vertical guide according to the casting radius of the multi-point bending correction area. The roll height is adjusted.

  In FIG. 1B, spare guide roll segments for adjacent Xth and Yth guide roll segments share the upper frame 1 and the upper guide roll 2 with the Xth and Yth guide roll segments. At the same time, the lower frame 3 and the lower guide roll 2 of the Xth and Yth guide roll segments are shared with each other. When assembling the X-th or Y-th guide roll segment, the horizontal distance between the guide rolls and the guide roll height are adjusted by the roll position adjusting spacers 5, 6, 7, and 8.

  As a result, compared to the conventional case where two adjacent guide roll segments each have a spare guide roll segment, the present invention provides the upper and lower frames 1 and 3 to be shared and the upper and lower guide rolls 2 to be shared. Therefore, as shown in Table 1, it is possible to reduce the number of frames, rolls, and chocks that support the rolls as compared with the prior art.

  In this embodiment, the sixth guide roll segment (6SEG) and the seventh guide roll segment (7SEG) adjacent to the sixth guide roll segment (7SEG) in the multipoint bending correction area in FIG. It is an example.

  The sixth guide roll segment shown in FIG. 2 (a) and the seventh guide roll segment shown in FIG. 2 (b) are respectively an upper frame 1, 1 and upper guide rolls 2, 2, and lower frames 3, 3. It consists of a lower guide roll 2. The upper frames 1 and 1 of both segments have the same size, and the guide rolls 2 and 2 have the same diameter.

  The guide roll 2 is supported by a roll bearing of a roll chock 9 fixed to the frames 1 and 3 as shown in FIG. Guide roll position adjusting spacers 5 to 8 are installed between the frames 1 and 3 and the roll chock 9.

In order to ensure the quality of the slab, the guide roll 2 is adjusted in the horizontal and vertical directions by the guide roll position adjusting spacers 5 to 8 so that all the guide rolls in the sixth and seventh guide roll segments (upper The arc length m between 8 pieces and 8 pieces below is the same length.
Since the horizontal adjustment is based on the sixth guide roll segment, the sixth guide roll segment does not move in the horizontal direction, and a plurality of guide roll position adjusting spacers 7 and 8 arranged in the seventh guide roll segment. The guide roll 2 is moved in the horizontal direction by changing the horizontal position of the convex portion or the concave portion where the convex portion fits.

  In the vertical adjustment, the height is adjusted by changing the thickness of the guide roll position adjusting spacers 5 to 8 arranged in the sixth and seventh guide roll segments.

1: Upper frame 2: Upper guide roll, lower guide roll 3: Lower frame 5: Roll position adjusting spacer 6: Roll position adjusting spacer 7: Roll position adjusting spacer 8: Roll position adjusting spacer 9: Roll chock 11: Convex
12: slab 13: guide roll 14: upper frame 15: upper roll 16: lower frame
17: Lower guide roll

Claims (3)

In the adjacent guide roll segment in the multi-point bending correction area of the continuous casting machine, provided with the upper frame and the upper guide roll on the upper side and the lower frame and the lower guide roll on the lower side ,
The upper frame and the upper guide roll of each of the adjacent guide roll segments are composed of the same size upper frame and the same diameter upper guide roll, and the lower frame and the lower guide roll are the same size lower frame and Consists of lower guide rolls of the same diameter ,
The horizontal distance and the vertical height of each guide roll of the adjacent guide roll segments are adjusted by installing a guide roll position adjusting spacer between the chock that supports each guide roll and the frame. guide roll segment of a continuous casting machine, characterized in that is.   The guide roll segment of the continuous casting machine according to claim 1, wherein the guide roll height is adjusted by overlapping a plurality of guide roll position adjusting spacers to change the thickness.   A convex portion is formed on the front and / or back surface of the guide roll position adjusting spacer, and a concave portion in which the convex portion is fitted is formed on a surface facing the convex portion, and the horizontal direction depends on the position of the convex portion and the concave portion. The guide roll segment of the continuous casting machine according to claim 2, wherein the position of the continuous casting machine is adjusted.

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