KR100804994B1 - Multi-piece type segment roll in continuous casting equipment - Google Patents

Abstract

A multi-piece type segment roll in a continuous casting equipment is provided to be able to connect neighboring division rolls such that the neighboring division rolls are integrally rotated by a simple structure, and enable the neighboring division rolls to be supported by bearings at the same time. As a multi-piece type segment roll in a continuous casting equipment, in which a plurality of division rolls are rotatably supported by bearings, the division rolls are connected to one another to be integrally rotated, and a cooling water moving structure is formed between the division rolls, the multi-piece type segment roll in the continuous casting equipment is characterized in that: trapezoidal bearing mounting grooves(18) are formed in end parts of neighboring division rolls such that the bearing mounting grooves get away from each other as it goes into the end parts of the neighboring division rolls, and the neighboring division rolls are rotatably supported by one bearing(20) mounted on the bearing mounting grooves; connectors(14) projected along the center line of the division rolls are formed on end parts of the neighboring division rolls, irregular shaped connecting grooves are formed on ends of the connectors and joined with each other, and insert members(40) having a cooling water passage therein are installed in the center of the connectors; and the insert members have a sealing member mounting groove continuously formed along an outer peripheral surface of both ends thereof, and a sealing member is mounted on the sealing member mounting groove.

Description

Multi-piece type segment roll in continuous casting equipment

1 is a schematic configuration diagram generally showing a continuous casting facility employing a conventional multi-segmented segment roll;

2 is a cross-sectional view showing a conventional multi-segment segment roll;

Figure 3 is an external perspective view showing the mounting state of the multi-segmented segment roll of the continuous casting plant according to the present invention and the bearing rotatably supporting it;

4 is a cutaway perspective view of FIG. 3;

5 is a cross-sectional view showing in more detail the configuration between the split rolls of the present invention;

Figure 6 is a perspective view showing in detail the connection structure between the split roll of the present invention;

Figure 7 is a cutaway perspective view showing in detail the insert member of the present invention.

Explanation of symbols on the main parts of the drawings

11, 12, 13: split roll 14: connector

15: connecting groove 18: bearing mounting groove

20: bearing 31: central channel

32: edge channel 33: connection channel

40 insert member 42 coolant passage

44: sealing member mounting groove 46: sealing member

48: round

The present invention relates to a multi-segmented segment roll of a continuous casting machine, and in particular, consisting of a plurality of split rolls and neighboring ones of these split rolls can be simultaneously supported by the same bearing to reduce the gap between the split rolls It also relates to a multi-segment segment roll of a continuous casting plant in which no leakage of cooling water occurs.

Segment rolls used in continuous casting facilities of steel mills are arranged in various places along the direction of molten steel, and molten steel is cast and rolled into slabs by 5 to 10 segment rolls.

Such segment rolls are roughly divided into integral segment rolls formed of one roll and multi-segmented segment rolls connected so that several split rolls rotate together. Moreover, the cell type segment roll in which the inside of a roll is empty is also used.

In addition, these segment rolls have a structure that is cooled by the cooling water supplied to pass through the flow path formed therein, and the rolls to be cooled are not only resistant to abrasion but also have a slab cooling improvement effect of about 30% compared to the rolls that are not cooled. Known.

Among the various types of segment rolls described above, the multi-segmented segment rolls are known to have the smallest deformation due to the load applied from the slab during casting, and for this reason, the plurality of split rolls rotate together while being cooled by the cooling water. Connected multi-segmented segment rolls are the most widely used.

A conventional multi-segmented segment roll will be described with reference to FIGS. 1 and 2.

1 is a view schematically showing the installation structure of the segment roll used in the continuous casting equipment, Figure 2 is an external view showing a conventional multi-segment segment roll.

The upper and lower segmented rolls 100 and 100A are arranged in parallel apart from each other by a suitable distance. Since these segment rolls 100 and 100A have substantially the same structure and are rotatably supported by the same structure, any one segment roll 100 will be described below.

A channel (not shown) through which the coolant passes is formed inside the segment roll 100, and the coolant supply part and the coolant discharge part respectively have elastic hoses 120 and 122 via the rotary joint 110. ).

The cooling water is supplied through the flexible hose 120 connected to the split roll 101 located on one side, among the plurality of split rolls 101, 102 and 1203, which generally constitute the segment roll 100. After passing sequentially through the channels respectively formed in the split rolls 101, 102, 103, and is discharged through the flexible hose 122. The movement of the coolant is possible by the configuration in which the channels formed in each of the split rolls 101, 102 and 103 are connected to each other through insert members not shown.

In addition, the split rolls 101, 102, 103 have both ends rotatably supported by bearings 130, respectively.

However, the conventional multi-segmented segment roll and the installation structure of the bearing rotatably supporting it have the following problems.

First, the connection structure of the dividing rolls adjacent to each other is complicated, so a lot of time is required for assembly and disassembly, and in particular, the complexity often causes cooling water leakage by destabilizing the connection structure of the insert member providing the cooling water passage. As such, when the coolant leaks, the split roll may not be sufficiently cooled, which may be damaged by deterioration and the service life may be significantly reduced.

Next, both ends of each of the split rolls are supported by separate bearings to form a large gap between neighboring split rolls, which is why abnormal slab bulging easily occurs.

Therefore, the present invention is to solve the above-mentioned conventional problems, continuous casting which can be connected so as to integrally rotate the split rolls adjacent to each other by a simple structure and can support the split rolls adjacent to each other with one bearing at the same time. The object is to provide a segmented roll of equipment.

As a technical configuration for achieving the above object, the present invention provides a plurality of dividing rolls rotatably supported by a bearing and connected so that the dividing rolls are integrally rotated, and a cooling water moving structure is provided between the dividing rolls. Segment rolls of continuous casting equipment

A trapezoidal bearing mounting groove is formed at an end portion of the neighboring split roll to move away from each other toward the inside, and the neighboring split roll is rotatably supported by one bearing mounted on the bearing mounting groove. The end portion of the roll is provided with a connector protruding along the center line, the end of the connector is formed with a concave-convex connection groove is coupled to each other, the insert member is provided with a coolant passage in the center of the connector, the insert The member has a sealing member mounting groove continuously formed along the outer circumferential surface of both ends, and the sealing member mounting groove is provided by the multi-segmented segment roll of the continuous casting equipment to which the sealing member is mounted.

In addition, the connector is preferably such that the protrusions and grooves formed to form irregularities have a trapezoidal shape.

Here, the split roll has a central channel formed along a center line on both sides of the inner side and separated from each other at a central portion, and continuous from one end portion to the other end portion along the longitudinal direction while being close to the outer surface, and spaced along a circumferential direction. It is provided with an edge channel disposed at several places apart from each other, and a connection channel formed to connect the central channel located at one side and the end of the edge channel adjacent thereto and the end of the central channel located at the other side and the edge channel adjacent thereto. desirable.

In addition, the edge channel is characterized in that it is formed in a radial shape disposed at a predetermined angle in the circumferential direction with respect to the center of the split roll.

And, the insert member is formed so that the outer diameter side edge portion of the both ends has an arc-shaped round, the connector is characterized in that it is formed to have a round of the shape corresponding to the round in the position where the round is located.

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Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is an external perspective view showing the mounting state of the multi-segmented segment roll of the continuous casting plant according to the present invention and the bearing for rotatably supporting it.

The segment roll 10 of the present invention has a plurality of split rolls 11, 12 and 13 divided therein, and the split rolls 11 adjacent to each other, that is, the split roll 11 positioned on the left side and the split positioned centrally. The roll 12 and the split roll 12 positioned at the center and the split roll 13 positioned at the right side are rotatably supported by one bearing 20, respectively. Of course, the left end of the split roll 11 located on the left side and the right end of the split roll 13 located on the right side are also supported by the bearing 20 so as to be rotatable.

FIG. 4 is a cutaway perspective view of FIG. 3, wherein each of the split rolls 11, 12 and 13 has a central channel 31 formed along a center line and separated from each other at a central portion.

In addition, inside each of the dividing rolls 11, 12, 13, the edges are arranged at several places apart from each other in the circumferential direction and continuous from one end to the other end in the longitudinal direction while being close to the outer surface. The channel 32 is provided.

In addition, inside each of the dividing rolls 11, 12 and 13, a central channel 31 located at one end of each of the dividing rolls 11, 12 and 13 and an edge channel adjacent thereto ( A connection channel formed to connect an end of the channel 32, and to connect a central channel 31 located at the other end of each split roll 11, 12, 13 and an end of the edge channel 32 adjacent thereto ( 33). Of course, these connection channels 33 are arranged to have an approximately radial shape so as to correspond to the edge channels 32, respectively.

In addition, the neighboring dividing rolls, that is, the dividing roll 11 located at one side (left side of the drawing), the dividing roll 12 located at the center, and the dividing roll 12 located at the center and the other side (right side of the drawing) The central channel 31 adjacent to each other of the split rolls 13 positioned is connected to each other by the insert member 40, and the insert member 40 serves to provide a connection passage of the cooling water between the split rolls adjacent to each other. Perform.

Therefore, when the coolant is supplied to the left central channel 31 of the split roll 11 located on one side (left side of the drawing), the coolant supplied to the left central channel 31 is edged through the left connecting channel 33, respectively. Cooling water supplied to the channel 32 and supplied to the edge channel 32 is provided to the right central channel 31 through the right connecting channel 33. In addition, the cooling water supplied to the right connecting channel 33 of the split roll 11 is provided to the left central channel 31 of the split roll 12 located at the center through the insert member 40. In this form, the coolant is discharged through the right center channel 31 of the split roll 13 located on the other side (right side of the drawing) through the channels formed in each of the split rolls 11, 12 and 13, respectively.

As the cooling water passes through the edge channel 32 installed close to the outer surface of the split rolls 11, 12 and 13, the surface temperature of the segment roll 10 is not easily worn, and at the same time, the slab cooling effect. To improve.

5 is a cross-sectional view showing in more detail the configuration between the split rolls.

For convenience, the connection structure between the dividing roll 11 positioned on the left side and the dividing roll 12 positioned on the center of FIG. 4 is illustrated, and the dividing roll 12 positioned on the center and the dividing roll 13 positioned on the right side are shown. The connection structure between) is also the same.

End portions of the split rolls 11 and 12 are formed with a connector 14 having an outer diameter smaller than the outer diameter of the split rolls 11 and 12 and extending along a center line with a predetermined length. In the center, a through hole 16 is formed through which the center channel 31 extends, and the insert member 40 is fitted therein. In addition, the end portions of the split rolls 11 and 12 form a protruding shape starting from a portion where the connector 14 is formed and moving away from the end portion toward the outer diameter.

Therefore, a bearing mounting groove 18 having an approximately trapezoidal cross section is formed at a portion where the split rolls 11 and 12 are connected, and the bearing 20 is installed in the bearing mounting groove 18. .

In addition, the end of the connector 14 is formed with a concave-convex connection groove 15 along the circumferential direction, as shown in more detail in Figure 6, the connection groove 15 is connected to each other is divided roll 11 12 is formed into a structure that can be rotated together. Preferably, the connecting groove 15 has an approximately trapezoidal shape in which the protrusions and the grooves formed alternately with each other.

In addition, the insert member 40 is formed to have a hollow pipe shape, which will be described in more detail with reference to FIG. 7.

The inside of the insert member 40 is formed with a cooling water passage 42 penetrated in the longitudinal direction, and both side ends of the insert member 40 are provided with a sealing member mounting groove 44 continuously formed along the outer circumferential surface thereof. The sealing member 46 is mounted to the sealing member mounting groove 44. Of course, such a sealing member 46 is a gap between the through hole 16 of the connector 14 formed at each end of the split rolls 11, 12, 13 and the outer diameter of the insert member 40. This prevents the coolant from leaking outside. In particular, since the connector 14 and the insert member 40 of the split rolls 11, 12, 13 do not rotate relative to each other, the sealing member 46 is prevented from being damaged by abrasion, thereby preventing cooling water leakage. This is kept stable.

In addition, the outer diameter side edge portions of both ends of the insert member 40 are formed to have an arc-shaped round 48, and the inner diameter side edges of the inner end of the through hole 16 to correspond to the round 48. The portions are also formed to have an arc shape, so that even when adjacent portions of neighboring split rolls are bent in a substantially straight shape to be bent slightly, the round portions are kept in contact with each other to minimize leakage of cooling water.

As described above, according to the multi-part segment roll of the continuous casting plant according to the present invention has the following effects.

First, neighboring dividing rolls are rotatably connected by one bearing, and this connection structure can reduce the spacing between neighboring dividing rolls, thereby suppressing the occurrence of abnormal slab bulging, thereby maintaining the cast quality stably.

Next, the split rolls adjacent to each other are simply connected through the concave-convex connecting groove to rotate integrally, and in particular, the cooling water passes adjacent to the surface of the split rolls, thereby suppressing abrasion caused by proper cooling. It is possible to improve the slab cooling efficiency.

In addition, this structure has an excellent effect of improving the productivity of the continuous casting facility by shortening the maintenance and repair time of the continuous casting facility by improving the overall life of the segment roll.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

Claims (6)

As a multi-segment segment roll of a continuous casting installation, in which a plurality of split rolls are rotatably supported by a bearing, the split rolls are connected to rotate integrally, and a coolant moving structure is provided between the split rolls. A trapezoidal bearing mounting groove 18 is formed at a distal end portion of the adjacent split roll toward the inside, and the divided split roll is rotated by one bearing 20 mounted on the bearing mounting groove 18. Possibly supported, A connector 14 protruding along a center line is provided at an end portion of the neighboring split roll, and an end portion of the connector 14 is formed with a concave-convex groove 15 coupled to each other, and the connector 14 In the center of the insert member 40 is provided with a coolant passage 42, The insert member 40 has a sealing member mounting groove 44 continuously formed along the outer circumferential surface of both end portions, and the sealing member mounting groove 44 has a sealing member 46 mounted thereon. Multi segment rolls. The segment roll of the continuous casting machine according to claim 1, wherein the connector (14) has protrusions and grooves formed to have irregularities. According to claim 1, The dividing roll, the central channel 31 formed along the center line on both sides of the inner side and separated from each other at the central portion, and continuous from one end to the other end along the longitudinal direction close to the outer surface In addition, the edge channel 32 disposed at several points along the circumferential direction, and the central channel 31 located at one side and the end of the edge channel 32 adjacent thereto are connected to each other, and the central channel located at the other side ( 31) and a segment roll of the continuous casting plant, characterized in that it is provided with a connecting channel 33 formed to connect the end of the edge channel 32 adjacent thereto. 4. The segment roll according to claim 3, wherein the edge channel (32) is formed in a radial shape spaced at an angle along the circumferential direction with respect to the center of the split roll. delete According to claim 1, wherein the insert member 40 is formed so that the outer diameter edge portion of the both ends has an arc-shaped round 48, the connector 14 is formed at the portion where the round 48 is located The segment roll of the continuous casting equipment, characterized in that formed to have a round of the shape corresponding to the round (48).

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