CN217301291U

CN217301291U - Cylindrical roller bearing with integral retainer

Info

Publication number: CN217301291U
Application number: CN202121178162.6U
Authority: CN
Inventors: 宋廷宇; 刘春雨; 于水; 温泉; 陶治; 岳超
Original assignee: Dalian Metallurgy and Bearings Co Ltd
Current assignee: Dalian Metallurgy and Bearings Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-08-26
Anticipated expiration: 2031-05-28

Abstract

The utility model relates to the technical field of bearings, in particular to an integral holder cylindrical roller bearing, which comprises an outer ring, an inner ring, a roller, a holder and an outer retainer ring; fillets are arranged at four corners of the cage pocket, two rows of bulges are formed on the outer diameter of the cage side by side along the width direction, the two rows of bulges are annularly arranged on the outer diameter of the whole cage by taking 2 bulges in each row as a unit, and the highest point of each bulge forms a locking point of the cage pocket; the bearing overcomes the defect that the roller is assembled through elastic deformation at the locking point during the assembly of the whole retainer of the prior part, and the damage of the bearing is caused due to improper operation, the roller does not need to be installed from the locking point, the rolling body is ensured to be easily pushed in from the inner diameter of the retainer, and the surface of the rolling body is not scratched; the structure has strong bearing capacity, high reliability and low noise, thereby prolonging the service life of the bearing and improving the economic benefit.

Description

Cylindrical roller bearing with integral retainer

Technical Field

The utility model relates to a bearing technical field, concretely relates to whole holder cylindrical roller bearing.

Background

The conventional cylindrical roller retainer structure is formed by combining a retainer seat and a retainer cover, and generally comprises a half-head rivet connection, a cylindrical-head rivet connection and a screw connection, wherein the half-head rivet connection, the cylindrical-head rivet connection and the screw connection are connected by a self-contained rivet head (square head rivet). However, customers have special industrial and mining requirements, if high reliability and low noise are required, an integral retainer structure is required, but the integral retainer structure has extremely high requirements on design and process.

Disclosure of Invention

In view of the high requirement to whole holder, the utility model aims at providing a novel whole holder cylindrical roller bearing, can avoid in the past whole holder structure through the colliding with of the roller that lock point department installation roller caused and raceway, both alleviateed holder weight to the unique design of holder simultaneously.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: an integral cage cylindrical roller bearing comprises an outer ring, an inner ring, rollers, a cage and an outer retainer ring; the four corners of the retainer pocket are provided with fillets, two rows of bulges are formed on the outer diameter of the retainer side by side along the width direction, the two rows of bulges are annularly arranged on the outer diameter of the whole retainer by taking 2 bulges in each row as a unit, and the highest point of each bulge forms a locking point of the retainer pocket;

furthermore, the locking points are in contact with the window beam, four locking points are arranged on each pocket, and the four locking points in the same pocket are matched to position the roller in the pocket;

furthermore, the cross section of each row of bulges arranged on the outer diameter of the retainer is shaped like two Chinese characters 'shan';

furthermore, the cross section of each bulge is in a trapezoid shape;

further, the inner diameter of the retainer is provided with arc grooves with the number equal to that of the rollers;

furthermore, each circular arc groove is arranged at the position of the inner diameter of the retainer corresponding to each pocket; the design not only reduces the weight of the retainer and improves the rotating speed of the bearing, but also provides favorable conditions for the lubrication of the bearing.

Furthermore, the retainer is of an integrated structure.

The utility model discloses a bearing structure is the NFP structure, and the inner circle is rotatory lasso, and the guide in letting whole holder and inner circle form during consequently the design produces the oil film, thereby makes the inner circle give the holder in order to drag power to increase the additional drive moment of holder to the rolling element, and can prevent to skid.

The utility model has the advantages that:

the bearing overcomes the defect that the roller is assembled through elastic deformation at the locking point during the assembly of the whole retainer of the prior part, and the damage of the bearing is caused due to improper operation, the roller does not need to be installed from the locking point, the rolling body is ensured to be easily pushed in from the inner diameter of the retainer, and the surface of the rolling body is not scratched; the structure is particularly suitable for large cylindrical roller bearings, not only reduces the physical load of assembly personnel, but also ensures the installation quality of the bearings, and has good effect on the lubrication of the bearings, thereby meeting the use requirements of customers on the bearings; the structure has strong bearing capacity, high reliability and low noise, thereby prolonging the service life of the bearing and improving the economic benefit.

Drawings

Fig. 1 is a cross-sectional view of the cylindrical roller bearing with the integral retainer of the present invention.

Fig. 2 is a structural view of the cage of fig. 1.

Fig. 3 is a side view of fig. 2.

In the figure, 1, an outer ring, 2, an inner ring, 3, rollers, 4, a retainer, 5, an outer retainer ring, 6, retainer window beams, 7, retainer pockets, 8, locking points, 9 and arc grooves.

Detailed Description

The invention is further explained according to the attached drawings.

As shown in fig. 1-3, an integral cage cylindrical roller bearing comprises an outer ring 1, an inner ring 2, rollers 3, a cage 4 and an outer retainer ring 5; fillets are arranged at four corners of the cage pocket, two rows of bulges are formed on the outer diameter of the cage 4 in parallel along the width direction, the two rows of bulges are annularly arranged on the outer diameter of the whole cage 4 by taking 2 bulges in each row as a unit, and a locking point 8 of the cage pocket is formed at the highest point of each bulge;

the locking points 8 are in contact with the window beam, four locking points 8 are arranged on each pocket, and the four locking points 8 in the same pocket are matched to position the roller 3 in the pocket; the design of four locking points in the pocket hole of the retainer ensures that the roller 3 is easily pushed in from the inner diameter of the retainer 4 without scratching the surface of the roller;

the cross section of each row of bulges arranged on the outer diameter of the retainer 4 is shaped like two Chinese characters 'shan';

the cross section of each bulge is trapezoidal;

the inner diameter of the retainer 4 is provided with arc grooves 9 with the number equal to that of the rollers;

each circular arc groove 9 is arranged at the position of the inner diameter of the retainer 4 corresponding to each pocket; the design not only reduces the weight of the retainer and improves the rotating speed of the bearing, but also provides favorable conditions for the lubrication of the bearing.

The fillet of the retainer pocket is an overtravel groove with a large fillet structure, and under the working condition of high-speed operation, the large fillet design can increase the entering amount of lubricating oil and increase the lubrication of the roller and the roller path; the contact area between the four walls of the pocket and the working surface of the roller is correspondingly reduced, so that the friction between the roller and the pocket is reduced.

The retainer 4 is of an integrated structure, and can meet the strength requirement of the bearing on the retainer under a heavy-load working condition.

The assembly process of the bearing comprises the following steps:

firstly, the retainer 4 is placed on an assembly platform, then the roller 3 is pushed from the inner diameter of the retainer 4, the roller 3 is pushed to the outer diameter locking point 8, then the inner ring 2 is placed, then the roller 3 is pushed back to the raceway of the inner ring 2 to form an inner assembly, and finally the outer ring 1 and the outer retainer 5 are placed to finish assembly.

The utility model discloses the design will be considered roller 3 and pushed away 8 departments of external diameter lock point and must be greater than inner circle flange external diameter.

Based on the above embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Claims

1. An integral cage cylindrical roller bearing, characterized in that: comprises an outer ring, an inner ring, a roller, a retainer and an outer retainer ring; the four corners of the cage pocket are provided with fillets, two rows of bulges are formed on the outer diameter of the cage side by side along the width direction, the two rows of bulges are annularly arranged on the outer diameter of the whole cage by taking 2 bulges in each row as a unit, and the highest point of each bulge forms a locking point of the cage pocket.

2. An integral cage cylindrical roller bearing according to claim 1, characterized in that: the lock point contact with the window beam, set up four lock points on every pocket, be located the downthehole roller of this pocket of four lock points cooperateed location of same pocket.

3. An integral cage cylindrical roller bearing according to claim 1, characterized in that: the cross section of each row of bulges arranged on the outer diameter of the retainer is shaped like two Chinese characters 'shan'.

4. An integral cage cylindrical roller bearing according to claim 3, characterized in that: the cross section of each protrusion is trapezoidal.

5. An integral cage cylindrical roller bearing according to any one of claims 1 to 4, characterized in that: the inner diameter of the retainer is provided with arc grooves with the number equal to that of the rollers.

6. An integral cage cylindrical roller bearing according to claim 5, characterized in that: each arc groove is arranged at the position of the inner diameter of the retainer corresponding to each pocket.