CN219605852U

CN219605852U - Cylindrical roller bearing with good lubricity

Info

Publication number: CN219605852U
Application number: CN202320906035.6U
Authority: CN
Inventors: 董慧敏; 谷晓光
Original assignee: Suzhou Bearing Factory Co ltd
Current assignee: Suzhou Bearing Factory Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-08-29
Anticipated expiration: 2033-04-21

Abstract

The utility model discloses a cylindrical roller bearing with good lubricity, which comprises an inner ring, a retainer arranged on the circumferential outer side of the inner ring and a plurality of rollers arranged between the inner ring and the retainer, wherein the retainer comprises two annular ring beams coaxially arranged and a plurality of window beams connected with the two annular ring beams, window holes for accommodating the rollers are formed between the two adjacent window beams, the window beams comprise thickened parts and connecting parts positioned on two sides of the thickened parts, the two connecting parts are respectively connected to the corresponding annular ring beams, the thickened parts protrude to the radial outer side of the annular ring beams, the thickened parts are provided with locking openings for limiting the rollers in the window holes, and when the rollers are tangential to the locking openings, the diameter of inscribed circles of the rollers is larger than the outer diameter of flanges of the inner ring; the annular ring beam is provided with a plurality of oil passing holes communicated with the window holes, and the oil passing holes extend from the radial inner side to the radial outer side of the annular ring beam. The cylindrical roller bearing provided by the utility model is convenient to assemble and disassemble, can reduce the abrasion during working, and can prolong the service life and improve the lubricity.

Description

Cylindrical roller bearing with good lubricity

Technical Field

The utility model relates to the technical field of bearings, in particular to a cylindrical roller bearing with good lubricity.

Background

As shown in fig. 1, the prior art cylindrical roller bearing without outer ring is composed of an inner ring 100, cylindrical rollers 300 and a cage 200, the bearing structure is an inner ring double flange, the inner ring 100 is in interference fit with a main shaft 400, and the cylindrical rollers 300 are in contact with a mounting hole of a using end housing 500. The bearing roller mounting mode of the structure is mainly an external roller, the locking notch is elastically deformed by beating with the help of external force, and the roller mounting process is completed, the roller mounting mode is easy to scratch a roller working surface or the locking notch to generate plastic deformation due to the external force in the roller mounting process, and the roller dismounting can only be completed by virtue of the plastic deformation of the locking notch of the retainer by the external force; secondly, the conventional cylindrical roller bearings mostly adopt a roller guiding mode, and frictional wear between the rollers and the retainer is unavoidable in the working process.

The present utility model has been made in order to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a cylindrical roller bearing with good lubricity, which is convenient to assemble and disassemble and reduces the abrasion of rollers and a retainer.

Based on the problems, the technical scheme provided by the utility model is as follows:

a cylindrical roller bearing with good lubricity comprises an inner ring, a retainer arranged on the circumferential outer side of the inner ring and a plurality of rollers arranged between the inner ring and the retainer, wherein the retainer comprises two annular ring beams coaxially arranged and a plurality of window beams connected with the two annular ring beams, window holes for accommodating the rollers are formed between two adjacent window beams,

the window beam comprises a thickened part and connecting parts positioned at two sides of the thickened part, the two connecting parts are respectively connected to the corresponding annular ring beams, the thickened part protrudes to the radial outer side of the annular ring beams, the thickened part is provided with a locking opening for limiting the roller in the window hole, and when the roller is tangential to the locking opening, the diameter of an inscribed circle of the plurality of rollers is larger than the outer diameter of a flange of the inner ring;

the annular ring beam is provided with a plurality of oil passing holes communicated with the window holes, and the oil passing holes extend from the radial inner side to the radial outer side of the annular ring beam.

In some of these embodiments, the annular ring beam has a thickness of 1/2 of the roller diameter, the thickened portion has a thickness of 2/3 of the roller diameter, and the cage radially inner side is spaced from the inner ring flange by a distance of 0.35mm.

In some embodiments, the width of the locking notch is 1/5 of the width of the thickened portion, and the depth of the locking notch is 1/12 of the depth of the window hole.

In some embodiments, the plurality of oil passing holes are uniformly spaced on the annular ring beam.

In some embodiments, the oil passing holes on the two annular ring beams are staggered.

In some embodiments, the locking notch is wedge-shaped.

Compared with the prior art, the utility model has the advantages that:

1. the structure of the retainer is improved, when the rollers are tangential to the locking notch, the diameter of inscribed circles of the rollers is larger than the outer diameter of the flanges of the inner ring, so that during installation, the rollers are firstly arranged in the window holes from the radial inner side of the retainer, then the rollers move to the radial outer side of the retainer to make the rollers tangential to the locking notch, then the inner ring is arranged in the radial inner side of the retainer, and finally the rollers move to the rollaway nest of the inner ring;

2. by reducing the size of the locking notch, the abrasion between the roller and the locking notch is further reduced, and the service life of the bearing is prolonged;

3. the plurality of oil passing holes communicated with the window holes are formed in the annular ring beam, so that the oil passing quantity can be increased, and the lubricity can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, in which the drawings are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a mounting structure of a cylindrical roller bearing without an outer ring in the prior art;

FIG. 2 is a schematic structural view of an embodiment of a cylindrical roller bearing with excellent lubricity according to the present utility model;

FIG. 3 is a second schematic diagram of an embodiment of the present utility model;

FIG. 4 is a schematic view in section A-A of FIG. 3;

FIG. 5 is a schematic view in section B-B of FIG. 3;

FIG. 6 is a schematic view of an inner ring mounting structure according to an embodiment of the present utility model;

FIG. 7 is a second schematic view of a structure for installing an inner ring according to an embodiment of the present utility model;

wherein:

100. an inner ring 101, a flange;

200. a retainer;

300. a cylindrical roller;

400. a main shaft;

500. using an end housing;

1. an inner ring 1-1 and a flange;

2. a retainer; 2-1, an annular ring beam; 2-1a, oil passing holes; 2-2, window beams; 2-2a, a thickened part; 2-2b, a connecting part 2-2c and a locking notch;

3. a roller.

Detailed Description

The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. The implementation conditions used in the examples may be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are generally those in routine experiments.

Referring to fig. 2 to 5, in order to provide an embodiment of the present utility model, there is provided a cylindrical roller bearing having excellent lubricity, comprising an inner ring 1, a cage 2 disposed on a circumferential outer side of the inner ring 1, and a plurality of rollers 3 disposed between the inner ring 1 and the cage 2, the cage 2 comprising two annular ring beams 2-1 coaxially arranged and a plurality of window beams 2-2 connecting the two annular ring beams 2-1, and windows for accommodating the rollers 3 being formed between the adjacent two window beams 2-2.

The window beam 2-2 comprises a thickened portion 2-2a and connecting portions 2-2b positioned on two sides of the thickened portion 2-2a, the connecting portions 2-2b are respectively connected to the corresponding annular ring beams 2-1, the thickened portion 2-2a protrudes to the radial outer side of the annular ring beams 2-1, a locking notch 2-2c for limiting the roller 3 in a window hole is formed in the thickened portion 2-2a, when the roller 3 is tangential to the locking notch 2-2c, the diameter of an inscribed circle of the plurality of rollers 3 is larger than the outer diameter of a flange 1-1 of the inner ring 1, and the inscribed circle refers to a circle tangential to the plurality of rollers 3. Therefore, when the bearing is installed, a plurality of rollers 3 can be firstly installed in the window holes from the radial inner side of the retainer 2, the rollers 3 are tangential to the locking ports 2-2c, then the inner ring 1 is installed on the radial inner side of the retainer 2, and then the rollers 3 are moved to the raceway position of the inner ring 1.

In the embodiment, the thickness of the annular ring beam 2-1 is 1/2 of the diameter of the roller 3, the thickness of the thickened part 2-2a is 2/3 of the diameter of the roller 3, the distance between the radial inner side of the retainer 2 and the flange 1-1 of the inner ring 1 is 0.35mm, free installation of the inner ring 1 can be ensured, the distance between the radial inner side of the retainer 2 and the flange 1-1 of the inner ring 1 is small, the contact between the roller 3 and the locking notch 2-2c of the retainer 2 is reduced in the working process of the bearing, the friction damage of the locking notch 2-2c to the roller 3 can be reduced, and the service life of the bearing is prolonged.

In order to further reduce the contact damage between the roller and the cage 2, in this example, the size of the locking notch 2-2c is reduced, the width of the locking notch 2-2c is 1/5 of the width of the thickened portion 2-2a, the depth of the locking notch 2-2c is 1/12 of the depth of the window hole, preferably, the locking notch 2-2c is wedge-shaped, and the radial outer side and the radial inner side of the cage 2 are tapered, so that the size of the locking notch 2-2c is reduced, and the friction damage between the roller 3 and the cage 2 can be reduced in the bearing working process.

In order to improve the lubricity of the bearing, a plurality of oil passing holes 2-1a communicated with the window holes are formed in the annular ring beam 2-1, the oil passing holes 2-1a extend from the radial inner side to the radial outer side of the annular ring beam 2-1, when the bearing works, the radial inner side of the retainer 2 is contacted with the flange 1-1 of the inner ring 1, and the oil passing holes 2-1a are increased to increase the oil passing quantity and improve the lubricity.

Specifically, the oil passing holes 2-1a on the two annular ring beams 2-1 are arranged in a staggered manner, for example, six oil passing holes 2-1a are uniformly arranged on one annular ring beam 2-1 at intervals of two window beams 2-2, six oil passing holes 2-1a are uniformly arranged on the other annular ring beam 2-1 at intervals of two window beams 2-2, and the oil passing holes 2-1a on the two annular ring beams 2-1 are arranged in a staggered manner.

As shown in fig. 6 and 7, when the bearing is assembled, a plurality of rollers 3 are installed in corresponding windows from the radial inner side of the retainer 2, the rollers 2 are moved to a position tangential to the locking notch 2-2c, then the inner ring 1 is installed in the retainer 2, and then the rollers 3 are moved into the roller path of the inner ring 1, thus completing the assembly of the bearing.

In conclusion, the cylindrical roller bearing can avoid interference installation of the roller and the retainer, reduce abrasion in the dismounting process, simultaneously reduce friction damage of the roller and the retainer in the bearing working process, improve the wear resistance, prolong the service life, simultaneously improve the lubricity and improve the working performance.

The above examples are provided for illustrating the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the contents of the present utility model and to implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a good cylinder roller bearing of lubricity, includes the inner circle, sets up the inner circle circumference outside holder and set up the inner circle with a plurality of rollers between the holder, the holder includes two annular ring beam and the connection of coaxial arrangement two a plurality of window roof beams of annular ring beam, form the accommodation between two adjacent window roof beams the window hole of roller, its characterized in that:

2. The cylindrical roller bearing with good lubricity according to claim 1, characterized in that: the thickness of the annular ring beam is 1/2 of the diameter of the roller, the thickness of the thickened part is 2/3 of the diameter of the roller, and the distance between the radial inner side of the retainer and the flange of the inner ring is 0.35mm.

3. The cylindrical roller bearing with good lubricity according to claim 2, characterized in that: the width of the locking notch is 1/5 of the width of the thickened part, and the depth of the locking notch is 1/12 of the depth of the window hole.

4. The cylindrical roller bearing with good lubricity according to claim 1, characterized in that: the oil passing holes are uniformly arranged on the annular ring beam at intervals.

5. The cylindrical roller bearing with good lubricity according to claim 1, characterized in that: the oil passing holes on the two annular ring beams are staggered.

6. The cylindrical roller bearing with good lubricity according to claim 1, characterized in that: the locking notch is wedge-shaped.