JP2878024B2 - Cooling water channel structure of sleeve type split roll - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling water channel structure of a sleeve type split roll, for example, in a state where heat is received from a hot material to be processed such as a continuously cast steel material or a hot rolled steel material. TECHNICAL FIELD The present invention relates to a cooling water channel structure provided in a part of a sleeve type split roll that is used and needs cooling, in order to allow cooling water for cooling the roll to flow.

[0002]

2. Description of the Related Art As shown in FIG. 6, the above-mentioned sleeve type split rolls are individually constituted by a combination of a plurality of rotating shafts 1, 2, 3 and sleeves 4, 5, 6 respectively fitted to them. Roll divided bodies 7, 8, 9 are arranged in series in the axial direction such that the outer peripheral surfaces of the sleeves 4, 5, 6 form a common roll surface, and the rotating shafts 1, 2, 3, Are connected to each other so that the whole is integrated. In such a sleeve type split roll, a roll cooling water passage A is provided between the rotary shafts 1, 2, 3 and the sleeves 4, 5, 6 in order to cool the roll. The roll cooling water passage A is formed in each of the plurality of roll divided bodies 7, 8, and 9, and the plurality of roll cooling water passages A are formed in the plurality of roll divided bodies 7, 8, 9 respectively.
(See, for example, Japanese Utility Model Application Laid-Open No. 63-150744).

[0003]

The roll cooling water channel A
When cooling the roll by flowing cooling water through the cooling water, the cooling water receives heat from the roll based on heat transfer in the cooling process of the roll, and gradually rises in temperature. Therefore, when the plurality of roll cooling water passages A are connected in series as described above, the cooling water is a downstream water passage of the plurality of roll cooling water passages A, specifically, a downstream water passage. Roll split body 9 (or downstream roll split body 8)
The higher the temperature, the higher the flow through the roll cooling water channel A provided in the upstream, and the more the heat generated by cooling the upstream roll splits 7 and 8 (or the upstream roll split 7) is received. I get warm. Accordingly, there is a problem in roll cooling performance that the cooling of the downstream roll splitter 9 (or the downstream roll splitter 8) becomes insufficient. The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a means capable of solving the above-mentioned problem in roll cooling performance by simply performing simple processing on the roll. .

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a cooling water channel structure for a sleeve-type split roll, which comprises a plurality of roll splits individually formed by a combination of a plurality of rotating shafts and sleeves respectively fitted on the shafts. The bodies are arranged in series in the axial direction so that the outer peripheral surface of each sleeve forms a common roll surface,
In addition, by connecting adjacent rotary shafts to each other, the entirety is integrated, and in the sleeve type split roll in which a roll cooling water passage is provided between the rotary shaft and the sleeve, At least one end portion of the rotation shaft is formed with one through hole extending in the axial direction,
A water supply pipe for forming a water supply passage communicating with the plurality of roll cooling water passages is inserted into the through-hole, and a drainage passage communicating with the plurality of roll cooling water passages is provided between the through-hole and the water supply pipe. formed between the partition and the drainage channel and the water supply path communicating impossible, and the holding partition wall member for holding the water supply pipe into the through-hole, and fitted into and fixed to the through hole, wherein All of multiple roll cooling channels
To a water channel directly connected to each of the water supply channel and the drainage channel.
The feature is that it is formed .

[0005]

In the cooling water channel structure according to the present invention, a single through hole is formed in the rotating shaft (at least one of the plurality of rotating shafts), and the holding partition wall is formed with respect to the through hole. It is formed by internally fitting and fixing a member so that a water supply pipe as the water supply passage is located in the through hole. The drainage channel is formed between the through hole and the water supply pipe. Moreover, the directly from the water supply passage to the roll cooling water channel, and directly linked to the drainage channel, whereby flow through the cooling water, the cooling of the roll by the cooling water from direct water supply passage is performed. That is, the cooling water, thus supplied to the respective roll cooling water passage is not through the other roll cooling water channel. Because, in the through-hole, a plurality of water supply pipes for directly supplying cooling water to the respective roll cooling water passages are inserted and arranged, so that the upstream-side roll is provided for each of the plurality of water supply pipes. It is possible to communicate with the downstream roll cooling water channel without communicating with the cooling water channel, causing a difference in the cooling capacity of each roll cooling water channel.
Because there is no.

[0006]

Therefore, in order to form the cooling water channel structure, it is only necessary to perform a simple process of forming one through hole on the rotating shaft as a part of the roll. Will be done. Then, the cooling water channel structure is easily formed by internally fitting and fixing the holding partition member with the water supply pipe in the through hole. Also,
Since the cooling water from the cooling water passage can be supplied to each roll cooling water passage without passing through another roll cooling water passage, the cooling water flowing through the downstream roll cooling water passage has a high temperature. The conventional configuration in which the temperature rise is avoided and the cooling of the downstream roll split body becomes insufficient.
This solves the problem of the roll cooling performance . Therefore, according to the present invention, the problem of the conventional roll cooling performance can be solved only by performing simple processing on the roll, and the object of the present invention can be achieved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

FIGS. 1 to 3 show a first embodiment of a cooling water channel structure according to the present invention, and a sleeve type split roll to which the cooling water channel structure is applied. Is a roll that is used in a state of receiving heat from a hot material to be processed, such as a continuously cast steel material or a hot-rolled steel material, and needs to be cooled. The roll is a triple-split roll, and the roll is provided with a cooling water passage described in detail below, and the cooling water is passed through the cooling water passage to cool the roll. .

As shown in FIG. 1, the roll has three rotating shafts 1, 2, 3 (hereinafter referred to as left in FIG. 1 (in the following description, left and right refer to left and right in FIG. 1 and its equivalents). ), And three sleeves 4, 5, 6 (hereinafter referred to as left to right) which are respectively fitted to the first rotating shaft 1, the second rotating shaft 2, and the third rotating shaft 3 in order from right to left. In order, three roll divided bodies 7, which are individually formed by a combination with the first sleeve 4, the second sleeve 5, and the third sleeve 6,
8, 9 (hereinafter, in order from left to right, the first roll split body 7,
A second roll split body 8 and a third roll split body 9).

Then, the roll divided bodies 7, 8, 9
Are arranged in series in the axial direction such that the outer peripheral surfaces of the sleeves 4, 5, and 6 form a common roll surface, and the adjacent rotary shafts 1, 2, and 3 (that is, the first rotary shaft) 1 and the second rotating shaft 2 and between the second rotating shaft 2 and the third rotating shaft 3
), The entirety of the roll is integrated.

In the above-mentioned roll, for its cooling,
As shown in FIG. 1, a roll cooling water passage A (hereinafter referred to as a first roll cooling water passage and a second roll cooling water passage A in order from left to right) is provided between the rotary shafts 1, 2, 3 and the sleeves 4, 5, 6, respectively. Cooling water passage, third roll cooling water passage). That is, spiral cooling water guide grooves 1b, 2b, 3b are recessed in the outer peripheral portions of the rotating shafts 1, 2, 3 and the sleeves 4, 5, 6 are provided on the rotating shafts 1, 2, 3 respectively. The first cooling water flow path A is formed between the first rotary shaft 1 and the first sleeve 4 by being externally fitted in a close contact state, and
A second cooling water passage A is formed between the second rotating shaft 2 and the second sleeve 5, and a third cooling water passage A is formed between the rotating shaft 3 and the sleeve 6 . Before each
Directly connected to the water supply channel B and directly to the drain channel D
The flow path is connected .

As shown in FIGS. 2 and 3, at least one of the three rotating shafts 1, 2, 3 at the end, specifically, the first rotating shaft 1, extends in the axial direction. One through hole 1a is formed. And the through hole 1a
Three kinds of water supply pipes 11, 12, 13 for forming a water supply path B communicating with the second roll cooling water path A and the third roll cooling water path A among the three roll cooling water paths A.
Are inserted and arranged. The three types of water supply pipes 1
The large-diameter water supply pipes 11, 12 (upstream water supply pipe 11, downstream water supply pipe 12) are located at one center of the through-hole 1 a, and the downstream water supply pipes 1, 12, and 13 are located at the center. The small-diameter water supply pipes 13 are fixed at three places in the upper half around the position 12 using the below-described holding partition member 10 and the like, and are arranged inside the first rotary shaft 1. I have. These three types of water supply pipes 11, 1
The arrangements 2 and 13 take into account the flow balance of each pipe.

The water supply passage B communicating with the first roll cooling water passage A is configured such that the upstream-side / center large-diameter water supply pipe 11 and the small-diameter water supply pipe 13 communicate with each other. . The drainage passage D communicating with the first roll cooling water passage A includes the through hole 1a and the water supply pipe 11,
12, 13 are formed.

The through hole 1a partitions the water supply passage B and the drainage passage D so that they cannot communicate with each other, and holds the water supply pipes 11, 12, and 13 at predetermined positions in the through hole 1a. The member 10 is fixed inside. Specifically, as shown in FIGS. 2 and 3,
A fitting hole for fitting the ends of the water supply pipes 11, 12, and 13 is formed in a part of the disc-shaped body for closing the through hole 1a, and the other part is connected to one end of the drain passage D. The water supply channel B and the drainage channel D are incommunicablely separated from each other at the remaining portion other than the fitting hole portion and the hollow portion. The through hole 1
The holding partition members 17 and 18 for holding the water supply pipes 12 and 13 on the distal end side are also fitted and fixed to a.

As shown in FIG. 1, the second rotary shaft 2 is provided with a front end closing hole 2a corresponding to the through hole 1a of the first rotary shaft 1 from both end faces thereof. The water supply passage B communicating with the second roll cooling water passage A is formed by the upstream and central large-diameter water supply pipe 11 and the downstream and central large-diameter water supply pipe 12 communicating with each other. The distal end of the flow path is formed by communicating with one of the distal end closing holes 2a (the distal end closing hole 2a formed from the left end surface of the second rotary shaft 2 toward the center).
A drainage channel D communicating with the second roll cooling water channel A is provided with a drainage pipe 15 described below, the tip end closing hole 2a formed from the other end of the tip end closing hole 2a (from the right end surface of the second rotary shaft 2 toward the center). ).

As shown in FIG. 1, a single through-hole 3a extending in the axial direction is formed in the center of the third rotating shaft 3 as shown in FIG. . And
A water supply pipe 14 for supplying cooling water in a direction opposite to a water supply direction to the first roll cooling water passage A in order to form a water supply passage E communicating with the third roll cooling water passage A in the through hole 3a. And a drain pipe 15 formed by passing through the inside of the third rotary shaft 3 a downstream portion of a drain passage D for communicating with the second roll cooling water passage A and sending drain water therefrom outside. Are inserted and arranged. The two types of pipes 14 and 15 are such that a large-diameter water supply pipe 14 is located at one center of the through-hole 3a, and small-diameter water supply pipes are located at three upper half locations around the large-diameter water supply pipe 14. Drainage pipe 1
5 is fixed so as to be positioned, and is disposed inside the third rotation shaft 3. The arrangement of these two types of pipes 14 and 15 also takes into account the flow balance of each pipe.

The through hole 3a partitions the water supply passage E and the drainage passage D so that they cannot communicate with each other, and holds the water supply pipes 14, 15 at predetermined positions in the through hole 3a. , 21 are internally fitted and fixed so as to perform the same function as the holding partition members 10, 17, 18 in the through hole 1a. The holding partition members 20 and 21 are, specifically, fitting holes for fitting the end portions or intermediate portions of the water supply pipes 14 and 15 to a part of a disc-shaped body for closing the through hole 3a. The water supply passage E and the drainage passage D are not communicated with each other at the remaining portion other than the fitting hole. The through hole 3a
The holding partition member 19 for holding the water supply pipe 15 at the center end thereof is also fitted and fixed therein. [Second embodiment] When a cooling water channel structure according to the present invention is provided with two split rolls, the split rolls are replaced with the first roll split body 7 and the second roll split body 8 in the first embodiment. (Not shown).

[Third Embodiment] FIG. 4 shows a third embodiment of the present invention.
Shown in In the drawings, the portions denoted by the same reference numerals as those in the first embodiment indicate the same or corresponding portions. When the object to which the cooling water channel structure according to the present invention is provided is a double split roll, as shown in FIG. 4, a through-hole 1 a formed in the first rotary shaft 1 constituting the central portion of the first roll split body 7. Near the right end of the holding partition member 10 in the first embodiment.
May be provided. The holding partition member 10A is the water supply pipe 1 in the first embodiment.
The water supply pipes 11A corresponding to 1 and 12 are held near the distal end, and partition the water supply channel and the drainage channel so that they cannot communicate with each other. The space around the water supply pipe 11 </ b> A on the left stream side of the installation part is all drainage passages from the roll cooling water passage A formed in the first roll split body 7. In this case, the cooling water supplied through the water supply pipe 11A is supplied to the roll cooling water passage A of the first roll split body 7.
And the roll cooling water passage A of the second roll split body 8 are supplied together before the supply of the first roll split body 7 to the roll cooling water passage A. Can be reduced from that of the first embodiment.

[Fourth Embodiment] FIG. 5 shows a fourth embodiment of the present invention.
Shown in In the drawings, the portions denoted by the same reference numerals as those in the first embodiment indicate the same or corresponding portions. When the object to which the cooling water channel structure according to the present invention is provided is a double split roll, as shown in FIG. 5, a roll formed on the first roll split body 7 on the left side of the holding partition member 10 in the first embodiment. An embodiment in which an outlet portion of the drainage channel from the cooling water channel A is provided is also conceivable. In this case, a part of the holding partition member 10 is provided with a fitting hole for fitting the end of the water supply pipe, and a part of the drainage channel D is configured as in the first embodiment. It is not necessary to provide a hollow portion.

[Fifth Embodiment] When the cooling water channel structure according to the present invention is provided with four divided rolls, the divided rolls have the same configuration as the two divided rolls described in the second embodiment. (However, the drainage of the cooling water of the second roll divided body 8 is returned to the supply side thereof) in a pair, and they may be symmetrically connected (not shown).
In addition, the structure of the present invention can be applied to a part of the cooling water channel structure even in the case of five or more divided rolls.

[Another Embodiment] The roll cooling water passage A may be formed by using a concave portion formed on the inner peripheral surface of the sleeves 4, 5, and 6. It may be formed by using a combination of a concave portion formed on the outer peripheral surface and a concave portion formed on the inner peripheral surface of the sleeve. These recesses may be axial grooves instead of spiral grooves as in the above-described embodiment.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing the entire configuration of a first embodiment of a cooling water channel structure according to the present invention.

FIG. 2 is a longitudinal sectional view showing a main part (a part of a first roll divided body) of the cooling water channel structure.

FIG. 3 is a sectional view taken along the line II in FIG. 2;

FIG. 4 is a schematic longitudinal sectional view showing a third embodiment of the cooling water channel structure according to the present invention.

FIG. 5 is a schematic longitudinal sectional view showing a fourth embodiment of the cooling water channel structure according to the present invention.

FIG. 6 is a longitudinal sectional view showing the entire configuration of a conventional cooling water channel structure.

[Explanation of symbols]

 1,2,3 Rotating shaft 1a Through hole 4,5,6 Sleeve 7,8,9 Roll split body 10 Holding partition member 11,12,13 Water supply pipe A Roll cooling water path B Water supply path D Drainage path

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-53-47330 (JP, A) JP-A-2-99253 (JP, A) JP-A-49-106970 (JP, U) JP-B-43 13603 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16C 13/00 B22D 11/12

Claims (1)

(57) [Claims] 1. Individually constituted by a combination of a plurality of rotating shafts (1), (2), (3) and sleeves (4), (5), (6) respectively fitted to them. A plurality of roll divisions (7), (8), (9) are connected to each sleeve (4), (5),
By arranging the outer peripheral surfaces of (6) in series in the axial direction so as to form a common roll surface, and by connecting the adjacent rotating shafts (1), (2), and (3) to each other, the overall Are integrated,
The rotating shafts (1), (2), (3) and the sleeve (4),
(5), (6), in each of the sleeve type split rolls provided with a roll cooling water path (A), at least one of the plurality of rotation shafts (1), (2), (3) One through-hole (1
a) and a water supply pipe (1) for forming a water supply path (B) communicating with the plurality of roll cooling water paths (A).
1), (12), and (13) are inserted through the through hole (1a), and the drainage channel (D) communicating with the plurality of roll cooling water channels (A) is inserted into the through hole (1a). And the water supply pipe (1
1), (12), and (13), partitioning the water supply channel (B) and the drainage channel (D) so that they cannot communicate with each other, and the water supply pipes (11), (12), (13)
Partition member (1) for holding the inside of the through hole (1a).
0), and fitted into and fixed to the through-hole (1a), said plurality
All of the roll cooling water passages (A)
It is formed in a water channel directly connected to each of the drainage channels (D).
Cooling water channel structure of that sleeve-type split roll.