JPH0632736U - Rolling bearing for roll support of rolling mill - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the strength of the aligning ring. [Structure] This bearing includes an inner ring 1 and a spherical outer diameter surface 2a.
An outer ring 2 having a plurality of cylindrical rollers 3 interposed between the inner and outer rings 1, 2; Centering ring 5 having a spherical inner diameter surface 5a. This bearing is
The inner ring 1 is fitted to a roll of a rolling mill (not shown), and the aligning ring 5 is used by being fixedly supported by the housing. Aligning ring 5
Is naturally split in one axial direction.
When the outer ring 2 is assembled to the aligning ring 5, the split portion is forcibly expanded to elastically expand the aligning ring 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rolling support rolling bearing for rotatably supporting a roll in a rolling mill of a continuous casting facility.

[0002]

[Prior art]

 In a rolling mill, a roll bends when rolling a steel plate or the like, so that a bearing having a centering property as shown in FIG. 3 is used as a roll supporting bearing. In this bearing, an outer ring 12 having a spherical outer diameter surface 12a is fitted to an aligning ring 15 having a spherical inner diameter surface 15a. The outer ring 12 swings axially with respect to the aligning wheel 15. It performs a centering action by making a dynamic motion.

By the way, since the outer ring 12 and the aligning ring 15 are spherically fitted, they cannot be assembled as they are. Therefore, conventionally, the inner ring surface of the aligning ring 15 is cut out at a position facing each other by 180 degrees, and the outer ring 12 is assembled into the aligning ring 15 by utilizing the pair of cutouts 15b. The notch 15b extends from the end face of the aligning ring 15 to the approximate center in the axial direction, and its width is formed to be slightly wider than the axial width dimension of the outer ring 12. When assembling the outer ring 12, with the axis of the outer ring 12 being perpendicular to the axis of the aligning ring 15, insert the outer ring 12 from the notch 15b to the vicinity of the axial center of the aligning ring 15 and position it. The outer ring 12 and the aligning wheel 15 are relatively rotated by 90 degrees so that their axes coincide with each other.

[0004]

[Problems to be solved by the device]

 The portion of the aligning wheel 15 where the notch 15b is provided has a smaller load capacity than the other portions. Therefore, when the bearing is set in the rolling mill, the notch 15b is positioned 90 degrees with respect to the load range. However, this bearing is often used as a clearance fit, and when the notch 15b enters the load range due to creep of the aligning ring 15, there is a possibility that the aligning ring 15 may be concerned about its strength.

An object of the present invention is to eliminate such a concern regarding the strength of the aligning ring.

[0006]

[Means for Solving the Problems]

 The rolling bearing for roll support of the rolling mill of the present invention comprises an inner ring fitted to a roll, an outer ring having a spherical outer diameter surface, a plurality of rolling elements interposed between the inner and outer rings, and an outer ring of the outer ring. A centering ring having a spherical inner diameter surface with which the radial surface is fitted, the centering ring being divided in one direction in the axial direction.

[0007]

[Action]

 Since the aligning ring is divided in one direction in the axial direction, the outer ring can be assembled by elastically pushing the aligning ring apart from the dividing part.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

The embodiment shown in FIG. 1 is an application of the present invention to a roll-supporting cylindrical roller bearing. This bearing includes an inner ring 1, an outer ring 2 having a spherical outer diameter surface 2a, a plurality of cylindrical rollers 3 interposed between the inner and outer rings 1, 2 and a holding member for holding the cylindrical rollers 3 at equal circumferential intervals. And a centering ring 5 having a spherical inner diameter surface 5a with which the outer diameter surface 2a of the outer ring 2 is fitted. In this bearing, the inner ring 1 is fitted to a roll of a rolling mill (not shown), and the aligning ring 5 is fixedly supported on the housing for use.

As shown in FIG. 2, the aligning ring 5 is naturally split at one location in the axial direction. Generally, in the natural splitting, a V-shaped groove in the axial direction is formed on the outer diameter surface of the ring member, and a breaking tool having a wedge angle larger than the V-shaped angle of this V-shaped groove is pressed against the V-shaped groove. This means a dividing means for breaking and dividing the ring along the V-shaped groove. In this embodiment, the natural division is adopted in order to eliminate the occurrence of misalignment and gaps on the division planes. Of course, it is also possible to divide by cutting with a cutter or the like.

When assembling the outer ring 2 into the aligning ring 5, as shown by a broken line in FIG. When the elastic force is released after the outer ring 2 is inserted, the aligning ring 5 returns to its original state due to the elastic restoring force, and the outer ring 2 is completely assembled. Since this bearing is used in a state in which the aligning ring 5 is restrained by the housing, the divided portions 5b are integrated with each other during use, and no particular malfunction occurs even when this enters the load range.

The present invention can also be applied to a so-called full-roller type roller bearing without a cage. Further, the bearing type is not limited to the cylindrical roller bearing illustrated in FIG. 1, but can be applied to other bearing types such as a tapered roller bearing and a deep groove ball bearing.

[0013]

[Effect of device]

 As described above, according to the present invention, since the aligning ring is axially divided at one location, the outer ring can be easily assembled by elastically expanding the aligning ring from the split portion. . Therefore, the notch for incorporating the outer ring, which has conventionally caused concern about the strength of the aligning ring, becomes unnecessary, and the load capacity of the roll supporting bearing can be increased.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a side view showing the aligning ring in FIG.

FIG. 3 is a sectional view showing a conventional roll supporting bearing.

FIG. 4 is a side view showing the aligning ring in FIG.

[Explanation of symbols]

 1 inner ring 2 outer ring 2a outer diameter surface 3 rolling element 5 aligning ring 5a inner diameter surface 5b split portion

Claims (1)

[Scope of utility model registration request] 1. An inner ring fitted to a roll of a rolling mill, an outer ring having a spherical outer diameter surface, a plurality of rolling elements interposed between the inner and outer rings, and an outer diameter surface of the outer ring fitted to each other. A rolling bearing for roll support of a rolling mill, comprising: an aligning ring having a spherical inner diameter surface, wherein the aligning ring is axially divided at one location.