KR200274613Y1 - A bearing arrangement for a roller of a continuous casting machine - Google Patents

Abstract

The present invention relates to a bearing arrangement for rollers 1 of a continuous casting machine, the rollers comprising several roller shells supported on a continuous shaft 2 in one position bearing and at least one non-position bearing 4 ( 7,8), each non-position bearing (4,5,6) is a bearing that allows axial movement and misalignment between the bearing's ring and the inner race ring, the inner race ring being axially Connected to the continuous shaft 2 in a constrained manner, the outer ring of the bearing is aligned to pass through the axially extending recesses 10, 11 on opposite sides of the roller shells 7, 8, 9. The bearing housings 4a, 4b with fixed axial extension means 4c are fixed, and the recesses 10, 11 are deeper than the axial extension of the axial extension means 3 of the bearing housing and thus in the non-position bearing Axial movement is possible by thermal expansion performed at.

Description

BEARING ARRANGEMENT FOR A ROLLER OF A CONTINUOUS CASTING MACHINE

The invention relates to a bearing arrangement for a roller of a continuous casting machine.

Such rollers operate at elevated temperatures, and because of this temperature and length, the barrel roller consists of a continuous tubular shaft with several roller shells rotatably supported on the tubular shaft. The roller shell must be able to make specific adjustments in the axial direction of the shaft and also to make small angular movements to compensate for any deviations, supported by several spherical roller bearings, one of which is a fixed position bearing. The rest are non-position bearings, each of which must be mounted in the radial clearance of the shaft to allow for this non-position bearing axial displacement. However, this creates a serious problem of leakage of coolant and rust between the inner race ring of the non-position bearing and the shaft, which results in a relatively short service life.

The object of the present invention is to propose a bearing arrangement for eliminating this problem and to achieve in a bearing arrangement having the features defined in claim 1.

Herein the present invention will be described for the non-limiting embodiment with reference to the drawings.

1 is a schematic perspective view showing a series of rollers of a continuous casting machine, preferably using a bearing arrangement according to the present invention;

2 is a schematic cross-sectional view of a roller for a continuous cast watch supported on a bearing arrangement according to the present invention;

3 is a partial view on a larger scale of the roller shown in FIG. 2;

* Code Description *

1 ...... roller 2 ...... shaft

3 ....... Bearing 4,5,6..Non-position bearing

7,8,9..Roller shell 10,11..Recessed recess

12 ..... duct system 13 ..... shaft seal

1 is a perspective view of a series of rollers 1 of a typical part of a continuous casting machine having an upper segment A, an inner cooling chamber B and an outer cooling chamber C, wherein the paired rollers 1 ) Supports and moves a stab (D) of continuous casting material and has a somewhat liquid core (not shown) in the top segment, but solidifies as it cools while being fed under continuous movement in the direction of the arrow. Let's do it.

A roller with a bearing arrangement according to the present invention is shown in cross section in FIG. 2 and interacts with a continuous smooth shaft 2 supported on a position bearing 3 and several non-position bearings 4, 5, 6. do. The position bearing (3) is a spherical roller bearing, wherein the non-position bearings (4, 5, 6) are annular bearings, the roller bearing having a curved longitudinal axis track profile with a radius of curvature greater than the radius between the bearing axis and the outer track. Has

Each of these annular bearings 4, 5, 6 can be misaligned at a particular angle, allowing for axial displacement within that bearing. The rotating shaft 2, which can be a driven or non-driven raceway ring, consists of a plurality of roller shells 7, 8, 9, in which there are three rollers but the number is not limited to three.

Each of these roller shells 7, 8, 9 are opposite as shown in FIG. 3, which shows a small part of the roller of FIG. 2 in which the roller shells 7, 8 and the intermediate annular bearing 4 interact. Aligned coaxially with an annular recess extending axially on the side. Each bearing 3-6 has a housing (although only one housing 4a is shown in FIG. 3). The housing 4a includes an outer race ring corresponding to the bearing, has a side flange 4b axially connected to the side of the outer race ring, and is provided with rolls 7, 8 on both sides of the bearing housing 4a. A shaft inserted into the annular recesses 10, 11 inserted into the annular recesses 10, 11, and inserted into the annular recesses 10, 11 in the engaging roller shell. It has the annular member 4c arranged in the direction. The axial extension of the annular member 4c arranged in the axial direction is smaller in depth than the annular recess, and the ring of the annular bare work 4, 5, 6 is necessary in the present invention and is a rolle shell conventional for the annular bearing. Making a relatively short axial displacement with respect to, all axial displacements and misalignments are corrected within the bearing without generating any unnecessary stress in the continuous casting roller.

The larger load capacity of the annular bearing allows the design of bearing assemblies of very small size as compared to conventional bearing arrangements of continuous casting rollers as long as they are supported by spherical roller bearings.

The roller shells 7, 8, 9 can also be deflated and adapted to the shaft 2 as operations for correcting such as thermal induced expansion are carried out in the annular bearing. The problem of leakage between the roller shell and the shaft was eliminated.

The roller shells 7, 8, 9 preferably have an internal duct system 12 for a refrigerant, such as water, with the space around the bearing being sealed to the refrigerant region by the shaft seal 13.

Claims (3)

In the bearing arrangement for the roller 1 of the continuous casting machine, several roller shells 7 supported on the continuous shaft 2 in one position bearing 3 and at least one non-position bearing 4, 5, 6. In the form with (8,9), Each non-position bearing 4, 5, 6 is a bearing which permits axial movement and misalignment between the ring of the bearing and the inner race ring, wherein the inner race ring has a continuous shaft 2 in a axially constrained manner. The outer ring of the bearing has an axial extension means 4c arranged to pass through the axially extending recesses 10 and 11 on opposite sides of the roller shells 7, 8 and 9. Bearing housings 4a and 4b having a fixed position, and recesses 10 and 11 are deeper than the axial extension of the axially extending means 3 of the bearing housing so as to be axially moved by thermal expansion performed in the non-position bearing. A bearing arrangement, characterized in that for enabling. 2. The non-position bearings 4, 5 and 6 of claim 1 are annular roller bearings and have a curved longitudinal axis track profile with a radius of curvature greater than the radius between the bare shaft axis and the outer race ring of the bearing. Bearing arrangement. The bearing axially extending means (3) of claim 1 or 2, wherein the axially extending means (3) of the bearing housing are axially arranged ring members, each recess (10,11) on the side of the roller shell (7,8,9). Is an annular recess provided coaxially with respect to the longitudinal center of the roller shell.