CN210531410U - Combined bearing - Google Patents

Abstract

The utility model relates to a bearing, in particular to combination bearing. The bearing comprises an outer ring (1), a spherical outer ring (2), a retainer (5), rolling balls (6) and an inner ring (7); the first bearing body comprises a spherical outer ring (2), a retainer (5), a rolling ball (6) and an inner ring (7), and the rolling ball (6) is fixed between the spherical outer ring (2) and the spherical inner ring (7) through the retainer (5) to ensure circumferential rotation; the first bearing body is positioned in the outer ring (1), the spherical outer ring (2) is matched with the spherical surface of the outer ring (1) to form a combined bearing body, and the first bearing body and the outer ring (1) can swing relatively. The utility model provides a combination bearing, not only can rotate, can compensate axial displacement and beat simultaneously, reduce the influence that the axis body swing was produced to counter shaft and bearing.

Description

Combined bearing

Technical Field

The invention relates to a bearing, in particular to a combined bearing capable of realizing multi-direction movement.

Background

For the segmented shafting with longer length, the segmented position of the segmented shafting is generally connected by bearing support, the added pivot can reduce the vibration amplitude of the shaft, increase the stability of the shafting and prolong the service life of the shafting. However, the added fulcrum increases the difficulty of shafting adjustment, and inevitably, the swinging shaft needs to be tried continuously, and because the bearing is a fixed fulcrum and the force arm is long, the other end of the shaft and the bearing fulcrum can be impacted greatly, and the shaft and the bearing are influenced to a certain extent.

Disclosure of Invention

The technical problems solved by the invention are as follows: the utility model provides a combination bearing, not only can rotate, can compensate axial displacement and beat simultaneously, reduce the influence that the axis body swing was produced to counter shaft and bearing.

The technical scheme of the invention is as follows: a combined bearing comprises an outer ring, a spherical outer ring, a retainer, rolling balls and an inner ring; the first bearing body comprises a spherical outer ring, a retainer, a rolling ball and an inner ring, wherein the rolling ball is fixed between the spherical outer ring and the spherical inner ring through the retainer to ensure circumferential rotation; the first bearing body is positioned in the outer ring, the spherical outer ring is matched with the spherical surface of the outer ring to form a combined bearing body, and the first bearing body and the outer ring can swing relatively. The technical scheme provides the combined bearing which can rotate and compensate axial displacement and deflection.

And the outer ring is provided with a connecting structure fixed with the machine body. The technical scheme ensures the fixation of the outer ring and provides an optional installation scheme.

The rolling balls are ceramic balls, so that the service life and the reliability of the bearing are improved.

The inner wall of the outer ring is provided with symmetrical grooves along the axial direction, and the grooves extend from the end surface of the outer ring to the middle position of the outer ring. This technical scheme provides the means of dismantling the first bearing body, has improved the maintainability of bearing.

The combined bearing is provided with a through hole which runs through the outer ring and the spherical outer ring, and the through hole is a filling port for filling a lubricating medium. Under the condition that the bearing body needs to be lubricated, a technical scheme which has the minimum influence on the bearing and is most convenient to fill is provided.

Drawings

FIG. 1 is a front view of an embodiment;

FIG. 2 is a sectional view taken along line A-A;

FIG. 3 is a cross-sectional view B-B;

fig. 4 is a partially enlarged view of fig. 3.

In the figure: 1-outer ring 2-spherical outer ring 3-closing ring 4-sealing cover 5-retainer 6-rolling ball 7-inner ring 8-groove

Detailed Description

As shown in fig. 1 and 2, the combination bearing includes an outer race 1, a spherical outer race 2, a collar 3, a seal cap 4, a cage 5, rolling balls 6, and an inner race 7. The spherical inner ring 2 is arranged on the inner side of the outer ring 1, the outer wall of the spherical inner ring is an arc-shaped raceway and is matched with the outer ring 1, and the raceway is arranged on the inner wall of the spherical inner ring 2 and corresponds to the outer raceway of the inner ring 7, so that the rolling balls 6 can be ensured to roll orderly in a space formed by the spherical inner ring 2 and the inner ring 7. And three lugs of the outer ring 1 are provided with mounting holes and are fixed with a mounting support through bolts, so that the bearing outer ring is prevented from rotating. The through hole penetrating through the outer ring 1 and the spherical outer ring 2 is a filling port for filling lubricating medium, so that the lubricating medium is convenient to fill. The end face of the spherical outer ring 2 is provided with a groove for installing a sealing cover 4 and a clamping ring 3, and the sealing cover can prevent a lubricating medium from overflowing so that the bearing has a sealing function. The retainer 5 is uniformly provided with holes for rolling balls 6 to limit the movement range of the rolling balls. The inner diameter of the inner ring 7 is in interference fit with the shaft, so that the inner ring 7 and the shaft have the same rotating speed. The groove 8 is a first bearing body dismounting groove, and when the plane where the first bearing body is located and the plane where the outer ring 1 is located are 90 degrees, and the groove 8 can be integrally dismounted after being rotated, so that the maintenance is convenient.

When the bearing is used, the inner ring 7 is sleeved on the shaft to rotate along with the shaft; the rolling ball 6 between the inner ring 7 and the spherical outer ring 2 is made of ceramic material; the spherical outer ring 2 provides an outer ring raceway for the ceramic ball, and simultaneously forms a joint bearing with the outer ring 1, and the joint bearing has the function of a joint bearing inner ring. Thus, the combined bearing has the functions of rotating along with the shaft, sealing, deflecting and aligning, and the like.

Claims (6)

1. A combination bearing, characterized by: the bearing comprises a first bearing body and an outer ring (1);

the first bearing body comprises a spherical outer ring (2), a retainer (5), a rolling ball (6) and an inner ring (7), and the rolling ball (6) is fixed between the spherical outer ring (2) and the spherical inner ring (7) through the retainer (5) to ensure circumferential rotation;

the first bearing body is positioned in the outer ring (1), the spherical outer ring (2) is matched with the spherical surface of the outer ring (1) to form a combined bearing body, and the first bearing body and the outer ring (1) can swing relatively.

2. A combination bearing according to claim 1, wherein: the outer ring (1) is provided with a connecting structure fixed with the machine body.

3. A combination bearing according to claim 1, wherein: the rolling balls (6) are ceramic balls.

4. A combination bearing according to claim 1, wherein: the inner wall of the outer ring (1) is provided with symmetrical grooves (8) along the axial direction, and the grooves (8) extend from the end surface of the outer ring (1) to the middle position of the outer ring (1).

5. A combination bearing according to claim 1, wherein: the combined bearing is provided with a through hole which penetrates through the outer ring (1) and the spherical outer ring (2).

6. A combination bearing according to claim 5, wherein: and a lubricating medium is filled in the through hole.

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