CN216343403U

CN216343403U - Outer-ring-free full-roller self-locking cylindrical bearing

Info

Publication number: CN216343403U
Application number: CN202123168933.6U
Authority: CN
Inventors: 苏中安; 王德连; 刘义强; 王成凯; 李闯
Original assignee: Wafangdian Bearing Group Liaoyang Bearing Manufacturing Co ltd
Current assignee: Wafangdian Bearing Group Liaoyang Bearing Manufacturing Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-04-19
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses an outer ring-free full-roller self-locking cylindrical bearing, which comprises a bearing inner ring integrally formed with a bearing body, an annular groove arranged on the bearing inner ring along the annular shape, and a cylindrical roller arranged in the annular groove of the bearing inner ring and rolling, an annular groove is fixedly arranged on the circumference of the flange of the bearing inner ring, symmetrical boss end faces are lathed at two ends of the cylindrical roller, the boss end faces are in clearance fit with the bearing inner ring, the distance between the boss end faces and the bearing inner ring is 0.03-0.05 mm, the inner ring of the bearing is provided with a ring groove on the circumference of the flange, the ring groove is connected with a locking ring in a riveting way, the flange of the inner ring of the bearing is ground smoothly, and is in clearance fit with the locking ring by 0.02-0.05 mm, the annular groove is positioned in the middle of the flange of the bearing inner ring, and the width of the annular groove is 1/3 to 1/2 wide occupying the width of the bearing inner race.

Description

Outer-ring-free full-roller self-locking cylindrical bearing

Technical Field

The utility model relates to the technical field of planetary wheel bearings of speed reducers, in particular to an outer ring-free full-roller self-locking cylindrical bearing.

Background

At present, the planetary reducer has the outstanding advantages of wide application, small volume, light weight and compact structure, and most of the planetary wheel bearings of the reducer adopt outer-ring-free full-roller bearings so as to reduce the product volume, reduce the bearing mass and reduce the processing cost, but the self-locking can not be formed due to the structural limitation of the bearings. The outer-ring-free full-roller cylindrical bearing is arranged on a planet wheel multi-group of the speed reducer and needs to be frequently disassembled and maintained to obtain a planet wheel mechanism, and the later-period disassembly and replacement are easy to cause loose sleeves, so that the later-period maintenance is difficult.

In view of the above factors, the applicant has developed an outer ring-free full-roller self-locking cylindrical bearing, so that the later maintenance cost is reduced, the overall working efficiency of the planetary gear bearing of the speed reducer is improved, the improvement of the full-roller bearing structure enables the two end face structures of the cylindrical roller to be provided with bosses, self-locking is formed by limiting the locking ring and the roller bosses, and self-locking between assemblies can be realized even if no bearing outer ring and no retainer are provided, so that the use requirement is met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an outer ring-free full-roller self-locking cylindrical bearing to solve the problems in the background technology.

The purpose of the utility model is realized by the following technical scheme: the outer-ring-free full-roller self-locking cylindrical bearing comprises a bearing inner ring integrally formed with a bearing body, an annular groove arranged on the bearing inner ring along the annular shape, and a cylindrical roller arranged in the annular groove of the bearing inner ring and rolling, wherein an annular groove is fixedly formed in the circumference of a flange of the bearing inner ring.

Furthermore, symmetrical boss end faces are lathed at two ends of the cylindrical roller, the boss end faces are in clearance fit with the bearing inner ring, and the distance between the boss end faces and the bearing inner ring is 0.03-0.05 mm.

Furthermore, an annular groove formed in the circumference of the flange of the bearing inner ring is connected with a locking ring in a riveting mode;

and the flange of the bearing inner ring is smoothly ground and is in clearance fit with the lock ring by 0.02-0.05 mm.

Further, the annular groove is located at the middle position of the rib of the bearing inner ring, and the width of the annular groove is 1/3-1/2 wide occupying the width of the bearing inner ring.

Furthermore, the lock ring is arranged along the circumference of the bearing inner ring baffle, and the lock ring is riveted, pressed and fully enters the annular groove of the bearing inner ring in the inner ring baffle groove.

Furthermore, the locking ring extends towards the end face of the boss of the cylindrical roller, and the extending distance is half of the end face of the boss.

Furthermore, the locking ring and the boss end face of the cylindrical roller are limited to form self-locking.

Compared with the prior art, the utility model has the beneficial effects that: the utility model has simple structure and convenient use, leads the two end surfaces of the cylindrical roller to be provided with bosses, utilizes a special riveting tool to press the lock ring on the inner ring flange, leads the lock ring to protrude a certain distance towards the inner side of the end surface of the inner ring flange to limit the roller bosses, leads the roller, the lock ring and the inner ring to form a whole, and leads the self-locking to be formed by the limit of the lock ring and the boss end surface of the cylindrical roller, and can realize the self-locking among components even without a bearing outer ring and a retainer.

Drawings

FIG. 1 is a schematic overall cross-sectional view of the present invention;

fig. 2 is a partially enlarged schematic view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1-2, the outer-ring-free full-roller self-locking cylindrical bearing comprises a bearing inner ring 2 integrally formed with a bearing body 1, an annular groove arranged along the annular shape on the bearing inner ring 2, and a cylindrical roller 3 arranged in the annular groove of the bearing inner ring 2 and rolling, wherein an annular groove 5 is fixed on the circumference of a flange of the bearing inner ring 2.

In order to facilitate the effective limit control of the cylindrical roller in a use state, a further preferable embodiment of the utility model is that two ends of the cylindrical roller 3 are lathed with symmetrical boss end faces, the boss end faces are in clearance fit with the bearing inner ring 2, and the distance between the boss end faces and the bearing inner ring 2 is 0.03-0.05 mm.

In order to ensure that the locking ring plays a role of preventing the locking ring from scattering in the installation and the disassembly of the bearing in a use state, the utility model further has the preferable embodiment that the locking ring 4 is connected in an annular groove 5 formed on the circumference of the flange of the bearing inner ring 2 in a riveting way;

and the flange of the bearing inner ring 2 is smoothly ground and is in clearance fit with the lock ring 4 by 0.02-0.05 mm.

In order to ensure that the embossing is sufficiently inserted into the inner ring rib groove when riveting the lock ring in the use state, the utility model further preferably provides that the annular groove 5 is located at the middle position of the rib of the bearing inner ring 2, and the width of the annular groove 5 is 1/3-1/2 wide occupying the width of the bearing inner ring 2.

In order to ensure that no interference exists when the bearing works in a use state, the lock ring is riveted to enable the embossing to fully enter the inner ring flange groove to obtain the fixation between the inner ring and the lock ring, and a further preferable embodiment of the utility model is that the lock ring 4 is arranged along the periphery of the flange of the bearing inner ring 2, and the lock ring 4 is riveted and embossed to fully enter the annular groove 5 of the bearing inner ring 2 in the inner ring flange groove.

In order to prevent the cylindrical roller 3 from falling out of the bearing inner ring 2 in a practical state, the lock ring 4 extends towards the boss end face of the cylindrical roller 3 by a distance which is half of the boss end face in a further preferred embodiment of the utility model.

In order to realize self-locking between the bearing outer ring and the retainer, the utility model further preferably adopts the embodiment that the locking ring 4 and the boss end face of the cylindrical roller 3 are limited to form self-locking.

The annular groove is fixedly turned in the middle of the flange of the bearing inner ring, the outer diameter of the flange of the bearing inner ring is smoothly ground and is in clearance fit with the lock ring for 2-5 times, so that the firmness after the lock ring is installed and riveted is facilitated, the contact between the boss end surface of the cylindrical roller and the inner ring is facilitated to reduce the friction force, the transmission loss is obviously reduced, and the lock ring plays a role in preventing loose sleeves in the installation and the disassembly of the bearing.

The lathed annular groove is fixed in the middle of the flange of the bearing inner ring, interference does not exist during the operation of the bearing, the impression fully enters the baffle annular groove of the bearing inner ring through the riveting of the locking ring, so that the fixation between the inner ring and the locking ring is obtained, self-locking is formed through the limit of the locking ring and the boss end surface of the cylindrical roller, and self-locking between components can be realized even in the state without the bearing outer ring and the retainer.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a no outer lane full roller auto-lock cylindrical bearing which characterized in that: the bearing comprises a bearing inner ring (2) integrally formed with a bearing body (1), an annular groove formed in the bearing inner ring (2) along the annular direction, and a cylindrical roller (3) arranged in the annular groove of the bearing inner ring (2) and rolling, wherein an annular groove (5) is fixedly formed in the circumference of a flange of the bearing inner ring (2).

2. The outer-ring-free full-roller self-locking cylindrical bearing according to claim 1, wherein: and the two ends of the cylindrical roller (3) are turned into symmetrical boss end faces, the boss end faces are in clearance fit with the bearing inner ring (2), and the distance between the boss end faces and the bearing inner ring (2) is 0.03-0.05 mm.

3. The outer-ring-free full-roller self-locking cylindrical bearing according to claim 1, wherein: the inner ring (2) of the bearing is provided with an annular groove (5) on the flange circumference, and a locking ring (4) is connected in a riveting manner;

and the flange of the bearing inner ring (2) is smoothly ground and is in clearance fit with the lock ring (4) by 0.02-0.05 mm.

4. The outer-ring-free full-roller self-locking cylindrical bearing according to claim 3, wherein: the annular groove (5) is located in the middle of the rib of the bearing inner ring (2), and the width of the annular groove (5) is 1/3-1/2 wide which occupies the width of the bearing inner ring (2).

5. The outer-ring-free full-roller self-locking cylindrical bearing according to claim 3, wherein: the lock ring (4) is arranged along the circumference of the flange of the bearing inner ring (2), and the lock ring (4) is riveted, pressed and fully enters the annular groove (5) of the bearing inner ring (2) in the flange groove of the inner ring.

6. The outer-ring-free full-roller self-locking cylindrical bearing according to claim 5, wherein: the lock ring (4) extends towards the end face of the boss of the cylindrical roller (3), and the extending distance is half of the end face of the boss.

7. The outer-ring-free full-roller self-locking cylindrical bearing according to claim 3 or 5, wherein: the locking ring (4) and the boss end face of the cylindrical roller (3) are limited to form self-locking.