CN213870757U

CN213870757U - Low-noise long-life precision bearing

Info

Publication number: CN213870757U
Application number: CN202022846829.7U
Authority: CN
Inventors: 王洪伦; 林联涛
Original assignee: Ningbo Zhicheng Bearing Co ltd
Current assignee: Ningbo Zhicheng Bearing Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-08-03
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to the technical field of bearings, in particular to a low-noise long-life precision bearing, which comprises an outer bearing ring component and an inner bearing ring component, wherein the outer bearing ring component comprises a fixed outer ring, an elastic outer ring is slidably arranged on the inner side of the fixed outer ring, a plurality of first springs are fixedly arranged between the elastic outer ring and the fixed outer ring, and the first springs are distributed around the fixed outer ring at equal intervals; the inner bearing ring assembly comprises a fixed inner ring, an elastic inner ring is slidably mounted on the inner side of the fixed inner ring, a plurality of second springs are fixedly mounted between the elastic inner ring and the fixed inner ring, and a plurality of balls are mounted between the fixed inner ring and the fixed outer ring in a rolling manner. The utility model discloses can make the bearing avoid at the during operation too big with the rigid contact of pivot and lead to the friction noise, the impact force that first spring and second spring can effectively slow down the bearing and receive simultaneously to improve the life of bearing greatly.

Description

Low-noise long-life precision bearing

Technical Field

The utility model relates to a bearing technical field especially relates to a low noise long-life precision bearing.

Background

The bearing is a component for fixing and reducing the load friction coefficient in the mechanical transmission process. When other parts move relatively to each other on the shaft, the bearing is a light part in the modern mechanical equipment and has the main function of supporting a mechanical rotating body to reduce the friction coefficient of mechanical load of the equipment in the transmission process; the bearing is a widely applied mechanical part, and can not be separated from a place where a rotary support exists, no matter whether the bearing is an airplane, an automobile, a ship, a machine tool, a motor, a household appliance and the like;

in recent years, with the development and application of ultra-high speed electric tools, bearing noise generated by bearings is large on some matching main machines, and the noise reduction performance of the bearing dust cover serving as a matching bearing dust cover is poor, so that the noise generated by the bearings cannot be eliminated, and noise pollution is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the big shortcoming of noise that has the bearing among the prior art, and the long-life precision bearing of a low noise that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

designing a low-noise long-life precision bearing, which comprises an outer bearing ring assembly and an inner bearing ring assembly, wherein the outer bearing ring assembly comprises a fixed outer ring, an elastic outer ring is slidably mounted on the inner side of the fixed outer ring, a plurality of first springs are fixedly mounted between the elastic outer ring and the fixed outer ring, and the first springs are distributed around the fixed outer ring at equal intervals; the inner bearing ring assembly comprises a fixed inner ring, an elastic inner ring is slidably mounted on the inner side of the fixed inner ring, a plurality of second springs are fixedly mounted between the elastic inner ring and the fixed inner ring, the second springs are distributed around the fixed inner ring at equal intervals, and a plurality of balls are arranged between the fixed inner ring and the fixed outer ring in a rolling manner.

Preferably, the inner wall of the fixed inner ring and the outer wall of the fixed outer ring are both provided with annular grooves matched with the balls, and the balls can roll in the annular grooves.

Preferably, the number of the first springs is the same as that of the second springs, and the first springs and the corresponding second springs are located on the same axial line.

Preferably, the outer side of the fixed inner ring is fixedly provided with a gland, the gland is provided with a plurality of fixing bolts in a threaded manner, and the gland is fixedly connected with the fixed inner ring through the fixing bolts.

Preferably, a rubber sleeve is fixedly installed on the inner side wall of the elastic inner ring, and a plurality of anti-skidding grooves are formed in the rubber sleeve.

The utility model provides a pair of low noise long-life precision bearing, beneficial effect lies in: elasticity outer loop and elasticity inner ring all have certain retractility, can make the bearing avoid leading to the friction noise too big with the rigid contact of pivot like this at the during operation, and first spring and second spring can effectively slow down the impact force that the bearing received simultaneously to improve the life of bearing greatly.

Drawings

Fig. 1 is a schematic structural view of a low-noise long-life precision bearing provided by the present invention;

fig. 2 is a schematic view of an internal structure of a low-noise long-life precision bearing according to the present invention;

fig. 3 is a cross-sectional view of the low-noise long-life precision bearing provided by the utility model.

In the figure: the bearing ring assembly comprises an outer bearing ring assembly 1, a fixed outer ring 11, an elastic outer ring 12, a first spring 13, an inner bearing ring assembly 2, a fixed inner ring 21, a second spring 22, an elastic inner ring 23, a rubber sleeve 24, balls 3, a gland 4 and a fixing bolt 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a low-noise long-life precision bearing comprises an outer bearing ring assembly 1 and an inner bearing ring assembly 2, wherein the outer bearing ring assembly 1 comprises a fixed outer ring 11, an elastic outer ring 12 is slidably mounted on the inner side of the fixed outer ring 11, a plurality of first springs 13 are fixedly mounted between the elastic outer ring 12 and the fixed outer ring 11, and the first springs 13 are equidistantly distributed around the fixed outer ring 11; the inner bearing ring assembly 2 comprises a fixed inner ring 21, an elastic inner ring 23 is slidably mounted on the inner side of the fixed inner ring 21, a plurality of second springs 22 are fixedly mounted between the elastic inner ring 23 and the fixed inner ring 21, the second springs 22 are distributed around the fixed inner ring 21 at equal intervals, the number of the first springs 13 is the same as that of the second springs 22, and the first springs 13 and the corresponding second springs 22 are located on the same axial line; the inner side wall of the elastic inner ring 23 is fixedly provided with a rubber sleeve 24, and the rubber sleeve 24 is provided with a plurality of anti-slip grooves. The elastic outer ring 12 and the elastic inner ring 23 both have certain retractility, so that the bearing can avoid hard contact with a rotating shaft during working to cause overlarge friction noise, and meanwhile, the first spring 13 and the second spring 22 can effectively reduce impact force on the bearing, thereby greatly prolonging the service life of the bearing.

A plurality of balls 3 are arranged between the fixed inner ring 21 and the fixed outer ring 11 in a rolling manner, annular grooves matched with the balls 3 are formed in the inner wall of the fixed inner ring 21 and the outer wall of the fixed outer ring 11, and the balls 3 can roll in the annular grooves; the outer side of the fixed inner ring 21 is fixedly provided with a gland 4, the gland 4 is provided with a plurality of fixing bolts 5 in a threaded manner, and the gland 4 is fixedly connected with the fixed inner ring 21 through the fixing bolts 5. The gland 4 can prevent dust from entering the inside of the bearing to cause the bearing to be damaged.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A low-noise long-life precision bearing comprises an outer bearing ring assembly (1) and an inner bearing ring assembly (2), and is characterized in that the outer bearing ring assembly (1) comprises a fixed outer ring (11), an elastic outer ring (12) is slidably mounted on the inner side of the fixed outer ring (11), a plurality of first springs (13) are fixedly mounted between the elastic outer ring (12) and the fixed outer ring (11), and the first springs (13) are equidistantly distributed around the fixed outer ring (11); interior bearing ring subassembly (2) is including fixed inner ring (21), the inboard slidable mounting of fixed inner ring (21) has elasticity inner ring (23), fixed mounting has a plurality of second springs (22) between elasticity inner ring (23) and fixed inner ring (21), second spring (22) are around fixed inner ring (21) equidistance and are distributed, roll between fixed inner ring (21) and fixed outer ring (11) and install a plurality of balls (3).

2. A low noise long life precision bearing according to claim 1, characterized in that the inner wall of the fixed inner ring (21) and the outer wall of the fixed outer ring (11) are provided with annular grooves matching with the balls (3), and the balls (3) can roll in the annular grooves.

3. A low noise long life precision bearing according to claim 1, characterized in that the number of said first springs (13) and second springs (22) is the same, said first springs (13) and corresponding second springs (22) being located on the same axial line.

4. A low-noise long-life precision bearing according to claim 1, characterized in that a gland (4) is fixedly mounted on the outer side of the fixed inner ring (21), a plurality of fixing bolts (5) are threadedly mounted on the gland (4), and the gland (4) is fixedly connected with the fixed inner ring (21) through the fixing bolts (5).

5. A low noise long life precision bearing according to claim 4, characterized in that the inner side wall of said elastic inner ring (23) is fixedly installed with a rubber sleeve (24), said rubber sleeve (24) is provided with a plurality of anti-skid grooves.