JPS59189053A - Split type roll of continuous casting machine - Google Patents

Abstract

PURPOSE:To provide a split type roll of a continuous casting machine which is shortened in the part where a billet is not supported by splining and connecting the split rolls on the same axial line by means of an intermediate roll having the same outside diameter as the outside diameter of said rolls. CONSTITUTION:A split type roll is formed of the 1st and 2nd roll members 1, 3, and the opposed ends of both rolls 1 and 3 are splined 4. An intermediate roll 2 interposed between both rolls 1 and 3 is fitted by said splines. The outside diameters of the rolls 1, 2, 3 are made equal. Bearings 5 are fitted to the opposed ends of the rolls 1, 3 between said rolls and the roll 2 and the bearings 5 are housed in a central housing 7. The part of the billet supporting surface where the billet is not supported is shortened by such split type roll and the deflection of the billet is effectively prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a split roll for a continuous casting machine.

Until now, split rolls have been used as rolls for continuous casting of wide material. A split type roll generally has a structure in which a number of divided roll members are arranged on one common shaft via a number of bearings.

For example, in the integrated roll type split roll (see FIG. 2), a housing 14 is arranged between the split roll members 13, and a bearing 1 is placed on the other end of the roll member 13.
5 is placed. Since the housing 4 and the bearing 15 used in the integral roll type split roll must have a two-sided structure, the bearing is expensive and large, and the load capacity is reduced.

As another example, a camp ring type split roll has a structure in which bearings and camp rings are placed between the split roll members, so the unsupported part of the cast slab without the slab supporting surface becomes long. This may cause the slab to bend in this area.

It is therefore an object of the present invention to provide a split roll having a structure in which the non-supporting portion of the slab without a slab supporting surface can be shortened.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In this example, split type 1] - Luha fl
It is composed of two roll members, a roll 1 and a 20th roll 3. A spline 4 is formed at the opposing ends of the 10th rule 1 and the 20th rule 3, and is fitted with an intermediate roll 2 interposed between both rolls 1 and 3. Note that the outer diameters of the 10th roller 1, the 20th roller 3, and the intermediate roll 2 are made equal.

Further, bearings 5 are fitted to the opposing ends of the 10th rule 1 and the 20th rule 3, respectively, between the intermediate roll 2 and the intermediate roll 2. Note that this bearing 5 is housed within a central housing 7. Note that bearings 5 are also fitted to the other ends of the 10th rule 1 and the 20th rule 3, respectively, and these bearings 5 are housed in housings 6 at both ends.

Next, the operation of the split roll according to the present invention will be explained. First, the driving force from the motor is transmitted to No. 10-1 via a reduction gear and a universal joint (not shown). At this time, the rotational force is applied to the intermediate roll 2 which is fitted to the 10th rule 1 and the 20th rule 3 by spline connection.
It is transmitted to the 20th rule 3 via. In other words, this intermediate roll 2 serves as a coupling connecting the 10th rule 1 and the 20th rule 3.

The radial load applied to the intermediate roll 2 is supported by both the 10th rule 1 and the 20th rule 3 splines 4. The rotary joint 1 is installed at the shaft end of the 20th rule 3.
0 is provided, and cooling water is supplied from the rotary joint 10 to the inside of the roll.

The cooling water passes through a cooling water flow path provided at the axis of the 20th rule 3, passes through the sleeve 9, is supplied to the cooling water flow path of the 10th rule 1, and reaches the end of the flow path. After that, the cooling water is drained from drain pipe 11.
and is discharged from the rotary joint 10.

Note that an O-ring 8 is fitted into the connecting portion between the sleeve 9 and the 10th-rule 1 and the 20th-rule 3.

As explained above, according to the present invention, the 10th rule and the 20th rule
- The outer diameters of the roll and the intermediate roll are the same, and the part that does not support the slab without a slab supporting surface is only the central housing portion, so it is extremely short, and deflection of the slab can be effectively prevented.

[Brief explanation of the drawing]

FIG. 1 is an axial sectional view of a split roll constructed according to the present invention, and FIG. 2 is a schematic sectional view showing a conventional example. (Main reference number) 141. No. 10, 280. intermediate roll, 361. No. 20, 400. Spline, 580. Bearing, 6908 Both ends housing, 781. central housing, 960. Sleeve, Applicant Sumitomo Heavy Industries, Ltd. Sub-Agent Patent Attorney Masahiko Arai

Claims (2)

[Claims] (1) A roll divided into two or more parts and arranged on the same axis, and a connecting roll having the same outer diameter as the divided roll and having means for connecting each of the rolls. A split roll for a continuous casting machine characterized by comprising: (2) A split roll for a continuous casting machine according to claim 1, wherein the means for connecting each of the rolls is a spline.