Tapered roller bearing

Abstract

To provide a tapered roller bearing that improves lubrication and prevents the cage from interfering with the surrounding structure of the bearing. [Solution] The tapered roller bearing comprises an inner ring 11, an outer ring 12, a plurality of tapered rollers 15 interposed between the inner ring 11 and the outer ring 12, and a cage 17 that holds the tapered rollers 15. The cage 17 is constructed by arranging a plurality of cage segments 20 in the circumferential direction A1, and has an inner ring assembly As in which the inner ring 11, the plurality of tapered rollers 15, and the cage 17 are integrated. Each of the plurality of cage segments 20 is detachably engaged and has a plurality of engaging members 32 arranged in the circumferential direction A1. The plurality of engaging members 32 mounted on each cage segment 20 and arranged in the circumferential direction are connected in an annular manner to assemble the inner ring assembly As.

Claims

1. A tapered roller bearing comprising an inner ring, an outer ring, a plurality of tapered rollers interposed between the inner and outer rings, and a cage that holds the tapered rollers, wherein the cage is constructed by arranging a plurality of cage segments in the circumferential direction, and the inner ring, the plurality of tapered rollers, and the cage are integrated into an inner ring assembly, Each of the plurality of retainer segments is detachably engaged with a plurality of engaging members arranged in the circumferential direction, A tapered roller bearing characterized in that the engaging members are connected in an annular manner.

2. In the tapered roller bearing according to claim 1, the cage segment has a plurality of pockets arranged in the circumferential direction for holding the tapered roller, the cage segment has a large-diameter side arc-shaped portion and a small-diameter side arc-shaped portion extending in the circumferential direction, and a plurality of columnar portions connecting these large-diameter side and small-diameter side arc-shaped portions, and the pocket is formed by the large-diameter side arc-shaped portion, the small-diameter side arc-shaped portion and the columnar portions, A tapered roller bearing on which the engaging member can be attached to and detached from the large-diameter side arc-shaped portion of each of the cage segments.

3. A tapered roller bearing according to claim 2, comprising a connecting member detachably connected to the engaging member, wherein a plurality of the engaging members are connected in an annular manner by the connecting member.

4. A tapered roller bearing according to claim 3, wherein the engaging member has a segment engaging portion that is detachably engaged with the large-diameter side arc-shaped portion and a connecting engaging portion that is detachably engaged with the connecting member.

5. A tapered roller bearing according to claim 4, wherein the segment engaging portion is a tapered roller bearing that contacts the inner diameter surface and the outer diameter surface of the large diameter side arc-shaped portion of the cage segment.

6. A tapered roller bearing according to claim 4, wherein the engaging member has a columnar portion that contacts the rolling surface of the tapered roller to restrict the movement of the tapered roller toward the outer diameter side.

7. A tapered roller bearing according to claim 2, wherein the large-diameter side arc-shaped portion has a projection or groove that restricts the circumferential movement of the engaging member.

8. A tapered roller bearing according to claim 1 or claim 2, wherein the diameter of the small flange of the inner ring is M, the angle of the small flange with respect to a straight line perpendicular to the central axis of the inner ring is L, the chamfer width of the tip of the small flange is K, and the distance from the contact point C where the side surface of the small flange and the small diameter end face of the tapered roller come into contact with each other to the central axis is y3, and the tapered roller bearing satisfies the following conditions. (M / 2)-K cosL>y3

9. A tapered roller bearing according to claim 1 or 2, wherein the tapered roller bearing is a large bearing with an outer diameter of 1 m or more used in a wind power generation device.

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