JPH062709A - Cooling water passage structure of sleeve type split roll - Google Patents

Abstract

(57) [Summary] [Object] To provide a means for solving the problem that a sleeve type split roll having a conventional cooling water channel structure is difficult to cool on the downstream side by simply performing processing on the roll. . [Structure] A single through hole 1a extending in the axial direction is formed in at least one of the plurality of rotating shafts 1, 2, 3 (rotating shaft 1). Rotating shafts 1, 2, 3 and sleeve 4,
Water supply pipes 11, 12 for forming a water supply passage B communicating with the roll cooling water passage A formed between the water supply pipes 5 and 6, respectively.
13 is inserted and arranged in the through hole 1a. A drainage channel D communicating with the plurality of roll cooling water channels A is formed between the through hole 1 a and the water supply pipes 11, 12, 13. The water supply passage B and the drainage passage D are partitioned so that they cannot communicate with each other, and the water supply pipes 11, 1
Holding partition member 10 for holding 2, 13 in the through hole 1a
Is internally fitted and fixed in the through hole 1a.

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 for a sleeve type split roll, for example, in a state of receiving heat from a hot treated material such as a continuously cast steel material or a hot rolled steel material. It relates to a cooling water passage structure provided in a part of a sleeve type split roll used and requiring cooling, in order to allow cooling water for cooling the roll to flow therethrough.

[0002]

2. Description of the Related Art As shown in FIG. 6, the sleeve type split roll is individually constructed by a combination of a plurality of rotary shafts 1, 2 and 3 and sleeves 4, 5 and 6 which are fitted onto the respective rotary shafts. A plurality of roll divided bodies 7, 8, 9 are arranged in series in the axial direction so that the outer peripheral surfaces of the sleeves 4, 5, 6 form a common roll surface, and the rotary shafts 1, 2, 3 The whole is integrated by connecting adjacent ones. In such a sleeve type split roll, a roll cooling water passage A is provided between the rotating shafts 1, 2, 3 and the sleeves 4, 5, 6 in order to cool the roll. The roll cooling water passages A are formed in the plurality of roll divided bodies 7, 8, 9 respectively, and the plurality of roll cooling water passages A are formed in the plurality of roll divided bodies 7, 8, 9 respectively.
According to the order of arrangement, the cells were connected and connected in series (see, for example, Japanese Utility Model Laid-Open No. 63-150744).

[0003]

The roll cooling water passage A
When cooling the roll by passing 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 channels A are connected in series as described above, the cooling water is the water channel on the downstream side of the plurality of roll cooling water channels A, specifically, on the downstream side. Roll division body 9 (or roll division body 8 on the downstream side)
The one that flows through the roll cooling water passage A provided in the above receives more heat by cooling the upstream roll divided bodies 7 and 8 (or the upstream roll divided body 7) and rises to a higher temperature. Get warm. Therefore, there is a problem in roll cooling performance that cooling of the downstream roll divided body 9 (or the downstream roll divided body 8) becomes insufficient. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a means capable of solving the above-mentioned problems in roll cooling performance by simply performing a process on the roll. .

[0004]

A cooling water channel structure for a sleeve-type divided roll according to the present invention has a plurality of roll divided members individually configured by a combination of a plurality of rotating shafts and sleeves fitted to the respective rotating shafts. Arrange the bodies 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 ones of the rotary shafts to each other, the whole is integrated, and in the sleeve-type split roll in which roll cooling water passages are respectively provided between the rotary shaft and the sleeve, At least one end of the rotary shaft is formed with a single 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 and arranged in the through hole, and a drainage passage communicating with the plurality of roll cooling water passages is provided with the through hole and the water supply pipe. A partition wall member that is formed between the water supply passage and the drainage passage so that they cannot communicate with each other and that holds the water supply pipe in the through hole, and is internally fitted and fixed in the through hole. It has features.

[0005]

In the cooling water channel structure according to the present invention, one through hole is formed in the rotary shaft (at least one of the plurality of rotary shafts), and the holding partition wall is formed in the through hole. It is formed by internally fitting and fixing the member so that the 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. In addition, cooling water is made to flow from the water supply passage through the roll cooling water passage to the drainage passage to cool the roll by the cooling water, but according to the cooling water passage structure of the present invention, the cooling is performed. It is possible to supply water to the roll cooling water passage on the downstream side without passing through the roll cooling water passage on the upstream side. Because a plurality of water supply pipes are inserted and arranged in the through hole, a part of the plurality of water supply pipes is connected to the roll cooling water passage on the downstream side without communicating with the roll cooling water passage on the upstream side. This is because they can communicate.

[0006]

Therefore, in order to form the cooling water channel structure, it is necessary to simply perform a simple process of forming a single through hole on the rotary shaft as a part of the roll. I will be done. Then, the cooling water passage 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 can be supplied to the downstream roll cooling water passage without passing through the upstream roll cooling water passage, the cooling water flowing through the downstream roll cooling water passage is heated to a higher temperature. Is avoided, and insufficient cooling of the roll divisions on the downstream side is avoided. Therefore, according to the present invention, the problem of the conventional roll cooling performance can be solved and the object of the present invention can be achieved only by performing simple processing on the roll.

[0007]

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

[First Embodiment] 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 which is used in a state of receiving heat from a material to be hot-treated such as a steel material that is continuously cast or a steel material that is hot-rolled and needs to be cooled. The roll is a triple-division roll, and the roll is provided with a cooling water passage described in detail below, and cooling water is passed through the cooling water passage to cool the roll. .

As shown in FIG. 1, the roll has three rotary shafts 1, 2 and 3 (hereinafter, left in FIG. 1 (in the following description, left and right means left and right in FIG. 1 and its corresponding figure). From the above) to the right in order from the first rotary shaft 1, the second rotary shaft 2, the third rotary shaft 3), and the three sleeves 4, 5 and 6 (hereinafter, left to right) that are respectively fitted onto them. In order, the first roller 4, the second sleeve 5, and the third sleeve 6) are individually combined to form three roll divisions 7,
8, 9 (hereinafter, in order from left to right, the first roll divided body 7,
The second roll divided body 8 and the third roll divided body 9 are provided.

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

In the roll, because of its cooling,
As shown in FIG. 1, between the rotary shafts 1, 2, 3 and the sleeves 4, 5, 6 are roll cooling water channels A (hereinafter, from left to right, in order from the first roll cooling water channel, the second roll water channel). A cooling water channel and a third roll cooling water channel) are provided. That is, spiral cooling water guide grooves 1b, 2b, 3b are provided on the outer peripheral portions of the rotary shafts 1, 2, 3 and the sleeves 4, 5, 6 are provided on the rotary shafts 1, 2, 3 respectively. By being externally fitted and mounted in a close contact state, a first cooling water channel A is formed between the first rotating shaft 1 and the first sleeve 4, 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. There is.

At least one of the three rotary shafts 1, 2, 3 has an end portion, more specifically, the first rotary shaft 1, which extends in the axial direction as shown in FIGS. 2 and 3. One through hole 1a is formed. Then, the through hole 1a
Of the three roll cooling water passages A, three kinds of water supply pipes 11, 12, 13 for forming a water supply passage B communicating with the second roll cooling water passage A and the third roll cooling water passage A.
Is inserted through. In addition, the above three types of water supply pipe 1
1, 12 and 13 have large diameter water supply pipes 11 and 12 (the water supply pipe 11 on the upstream side and the water supply pipe 12 on the downstream side) located at one central portion of the through hole 1a, and the water supply pipes on the downstream side thereof. The water supply pipes 13 having a small diameter are fixed to each other in three upper halves around 12 by using the holding partition member 10 and the like, and are arranged inside the first rotary shaft 1. There is. These three types of water supply pipes 11,1
The arrangements of 2 and 13 take into consideration the flow rate balance of each pipe.

The water supply passage B communicating with the first roll cooling water passage A is constructed by connecting the large-diameter water supply pipe 11 and the small-diameter water supply pipe 13 at the upstream side and the center to each other. . The drainage channel D communicating with the first roll cooling water channel A has the through hole 1a and the water supply pipe 11,
It is designed to be formed between 12 and 13.

A holding partition for partitioning the water supply passage B and the drainage passage D into the through hole 1a so that they cannot communicate with each other and for holding the water supply pipes 11, 12, 13 at predetermined positions in the through hole 1a. The member 10 is internally fixed. The holding partition member 10 is, as specifically shown in FIGS. 2 and 3,
A fitting hole-shaped portion for fitting the end portions of the water supply pipes 11, 12, 13 is formed in a part of the disk-shaped body that closes the through hole 1a, and the other portion is formed in the drainage channel D. The water supply passage B and the drainage passage D are partitioned so that they cannot communicate with each other at the remaining portion other than the fitting hole-shaped portion and the hollowed-out portion. The through hole 1
Holding partition members 17 and 18 for holding the water supply pipes 12 and 13 on the tip end side are also fitted and fixed to a.

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

At the center of the third rotary shaft 3, as shown in FIG. 1, one through hole 3a extending in the axial direction is formed similarly to the through hole 1a of the first rotary shaft 1. . And
In order to form a water supply passage E communicating with the third roll cooling water passage A in the through hole 3a, a water supply pipe 14 for supplying cooling water in a direction opposite to the water supply direction to the first roll cooling water passage A. And a drain pipe 15 formed by passing the downstream portion of the drain passage D, which communicates with the second roll cooling water passage A and sends the drainage therefrom to the outside, through the inside of the third rotary shaft 3 as it is. Is inserted through. The two types of pipes 14 and 15 have a large-diameter water supply pipe 14 located at one center of the through-hole 3a, and a small-diameter water supply pipe 14 at three places in the upper half around the large-diameter water supply pipe 14. Drainage pipe 1
5 is fixed so as to be positioned and is arranged inside the third rotating shaft 3. The arrangement of these two types of pipes 14 and 15 also takes into consideration the flow rate balance of each pipe.

A holding partition member 20 for partitioning the water supply passage E and the drainage passage D into the through hole 3a so that they cannot communicate with each other and for holding the water supply pipes 14 and 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 hole shapes for fitting an end portion or an intermediate portion of the water supply pipes 14 and 15 to a part of a disk-shaped body that closes the through hole 3a. A portion is provided so that the water supply passage E and the drainage passage D are partitioned so that they cannot communicate with each other at the remaining portion other than the fitting hole portion. Incidentally, the through hole 3a
A retaining partition member 19 for retaining the water supply pipe 15 at the central end is also fitted and fixed therein. [Second Embodiment] When the object to which the cooling water channel structure according to the present invention is provided is a double-divided roll, the divided rolls are the first roll divided body 7 and the second roll divided body 8 in the first embodiment. It may be configured in combination with (not shown).

[Third Embodiment] FIG. 4 shows a third embodiment of the present invention.
Shown in. In the drawings, the parts indicated by the same reference numerals as those in the first embodiment indicate the same or corresponding parts. When the object to which the cooling water channel structure according to the present invention is provided is a double-divided roll, as shown in FIG. 4, the through-hole 1a formed in the first rotary shaft 1 forming the central portion of the first roll divided body 7 is formed. The holding partition wall member 10 in the first embodiment near the right end of the
A holding partition member 10A corresponding to the above may be provided. The retaining 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 tip, and the water supply passage and the drainage passage are partitioned so that they cannot communicate with each other. The space around the water supply pipe 11A on the left-hand side of the installation portion is the drainage passage from the roll cooling water passage A formed in the first roll division body 7. In this case, the cooling water supplied via the water supply pipe 11A is the roll cooling water passage A of the first roll division body 7.
And before the supply to the roll cooling water passage A of the first roll divided body 7 to both of the roll cooling water passage A of the second roll divided body 8 and the number of water supply pipes. Can be reduced from that of the first embodiment.

[Fourth Embodiment] A fourth embodiment of the present invention is shown in FIG.
Shown in. In the drawings, the parts indicated by the same reference numerals as those in the first embodiment indicate the same or corresponding parts. When the object to which the cooling water passage 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 path from the cooling water path A is provided is also conceivable. In this case, a fitting hole-like portion for fitting the end of the water supply pipe is formed in a part of the holding partition member 10 and a part of the drainage channel D is formed as in the first embodiment. There is no need to provide a hollowed out portion.

[Fifth Embodiment] When the object to which the cooling water channel structure according to the present invention is provided is a quadruple split roll, the split roll has the same structure as the double split roll described in the second embodiment. It is also possible to prepare a pair of those (however, the drainage of the cooling water of the second roll division body 8 is configured to be returned to the supply side) and connect them symmetrically (not shown).
Further, 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 split rolls.

[Other Embodiments] The roll cooling water passage A may be formed by utilizing 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 recess formed on the outer peripheral surface and a recess formed on the inner peripheral surface of the sleeve. Then, the recesses may be axial grooves instead of the spiral grooves as in the above-described embodiments.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

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

FIG. 2 is a vertical cross-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 EE in FIG.

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

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

FIG. 6 is a vertical sectional view showing the overall 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 division body 10 Holding partition member 11,12,13 Water supply pipe A Roll cooling water channel B Water supply channel D Drainage channel

Claims (1)

[Claims] 1. A plurality of rotating shafts (1), (2), (3) and sleeves (4), (5), (6) respectively fitted on the respective rotating shafts are individually configured. A plurality of roll divided bodies (7), (8) and (9) are provided in the sleeves (4), (5) and (6), respectively.
By arranging them in series in the axial direction so that the outer peripheral surfaces of them form a common roll surface, and connecting the adjacent rotating shafts (1), (2), (3) to each other, the whole is integrated. The rotating shafts (1), (2), (3) and the sleeves (4), (5),
A sleeve type split roll having roll cooling water passages (A) provided between the rotary shafts (1), (2) and (3), respectively. A single through hole (1
a) and a water supply pipe (11) for forming a water supply passage (B) communicating with the plurality of roll cooling water passages (A),
(12) and (13) are inserted and arranged in the through hole (1a), and a drainage channel (D) communicating with the plurality of roll cooling water channels (A) is connected to the through hole (1a) and the water supply channel. Pipe (1
1), (12), (13), the water supply passage (B) and the drainage passage (D) are partitioned so that they cannot communicate with each other, and the water supply pipes (11), (12), (13)
Holding partition member (1) for holding the inside of the through hole (1a).
0) is a sleeve-type split roll cooling water channel structure in which the through hole (1a) is internally fitted and fixed.