CN209856232U

CN209856232U - Close formula back lining bearing

Info

Publication number: CN209856232U
Application number: CN201822194297.6U
Authority: CN
Inventors: 陶永刚; 迟文毫; 杜以月
Original assignee: Wafangdian No1 Rolling-Mill Bearing Manufacturing Co Ltd
Current assignee: Wafangdian No1 Rolling-Mill Bearing Manufacturing Co Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2019-12-27
Anticipated expiration: 2028-12-26

Abstract

The utility model discloses a close formula back lining bearing, including outer lane, roller and inner circle, the both sides of outer lane all are provided with annular step, and the top of annular step all is provided with annular ball groove, annular ball inslot portion evenly is provided with the ball, the inboard of outer lane is provided with the inner circle, and is provided with hollow post in the middle of inner circle and the outer lane, be provided with the holder between inner circle and the outer lane, and evenly inlay the both sides of holder and install the roller, the outside of roller all is provided with interior retaining ring, and the outside of interior retaining ring be provided with interior retaining ring matched with outer retaining ring, one side that the interior retaining ring top is close to the outer lane is provided with the external seal circle, the inside one side that is close to interior retaining ring of outer retaining ring. The utility model discloses the leakproofness is better, and the loss is less, long service life, easily uses widely.

Description

Close formula back lining bearing

Technical Field

The utility model relates to a bearing technical field specifically is a close formula back lining bearing.

Background

The backing bearing is widely used on multi-roll cold rolling mills and straightening machines, is mainly applied to high-precision rolling of steel and non-ferrous metal steel strips, and can also be used for other purposes, such as a rolling type straightening machine or a bending machine. The backing bearing is a rolling bearing with a particularly thick outer ring which in use is mounted in a unitized fashion on a stationary shaft as a support roller. The pressure on the work rolls is transmitted through the intermediate rolls to the backing bearings threaded over the support rolls and transmitted to the frame through the saddle system. The backing bearing has various structural patterns, and according to the structural patterns, the backing bearing can bear high radial load and can also bear axial load transmitted to the machine frame through an adjacent mechanism.

The existing back lining bearings are poor in sealing performance, external impurities easily enter the interior of the roller, lubricating oil in the interior of the roller easily leaks, a plurality of back lining bearings are usually sleeved on a saddle system, and the abrasion of the bearings can be caused due to the mutual friction of two adjacent back lining bearings, so that the service life of the bearings is shortened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a close formula backing bearing to solve the not good wearing and tearing problem that can lead to the bearing of rubbing each other with two adjacent backing bearings of leakproofness that provide among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a close formula backing bearing, includes outer lane, roller and inner circle, the both sides of outer lane all are provided with annular step, and the top of annular step all is provided with annular ball groove, annular ball inslot portion evenly is provided with the ball, the inboard of outer lane is provided with the inner circle, and is provided with hollow post in the middle of inner circle and the outer lane, be provided with the holder between inner circle and the outer lane, and evenly inlay the both sides of holder and install the roller, the outside of roller all is provided with interior retaining ring, and the outside of interior retaining ring is provided with the outer retaining ring with interior retaining ring matched with, one side that the interior retaining ring top is close to the outer lane is provided with the external seal circle, the inside one side that is close to interior retaining.

Preferably, the side walls of the outer ring and the inner ring are both provided with chromium coatings, and the chromium coatings, the outer ring and the inner ring form a protective structure.

Preferably, oil filling holes are uniformly formed in the inner side wall of the inner ring, transversely penetrate through the inner ring and extend to the rollers on two sides.

Preferably, the outer sealing ring and the inner sealing ring are both made of nitrile rubber, and are both annular.

Preferably, one side of the inner retainer ring is provided with a sealing spring retainer ring, and the sealing spring retainer ring extends to the inside of the outer ring.

Preferably, the outer sealing ring is internally provided with an annular groove, and one side of the inner check ring close to the outer sealing ring is provided with an annular bulge matched with the annular groove.

Compared with the prior art, the beneficial effects of the utility model are that: this close formula back lining bearing is through setting up outer retaining ring and the interior retaining ring of mutually supporting, and the junction is provided with the inner seal circle, outer retaining ring and sealing spring retaining ring, can improve the leakproofness of bearing, inside avoiding external dust impurity to get into roller and holder, and can prevent that inside lubricating oil from spilling, all set up the ball through the both sides in the outer lane, a plurality of back lining bearings of wearing and sleeving usually for the saddle system, can convert the sliding friction between the bearing into rolling friction, reduce the wearing and tearing to the bearing inner race, prolong its life, the utility model discloses a set up a plurality of oil filler points on the lateral wall of inner circle, can provide lubricating oil for roller and holder and realize effective lubrication, the roll of the roller of being convenient for, reduce the wearing and tearing of roller and holder, prolong the life of bearing.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 1;

in the figure: 1. an outer ring; 2. a roller; 3. an inner ring; 4. a holder; 5. an oil filler hole; 6. an outer sealing ring; 7. an inner retainer ring; 8. an inner seal ring; 9. an outer retainer ring; 10. a sealing spring retainer ring; 11. an annular groove; 12. a hollow column; 13. a ball bearing; 14. an annular step; 15. an annular ball groove.

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

Referring to fig. 1-4, the present invention provides an embodiment: a compact backing bearing comprises an outer ring 1, rollers 2 and an inner ring 3, wherein annular steps 14 are arranged on two sides of the outer ring 1, annular ball grooves 15 are formed in the top ends of the annular steps 14, balls 13 are uniformly arranged in the annular ball grooves 15, the inner side of the outer ring 1 is provided with the inner ring 3, chromium coatings are arranged on the side walls of the outer ring 1 and the inner ring 3, the chromium coatings and the outer ring 1 and the inner ring 3 form a protective structure, the chromium coatings have good heat resistance, wear resistance and chemical stability, the service life of the bearing is prolonged, a hollow column 12 is arranged between the inner ring 3 and the outer ring 1, a retainer 4 is arranged between the inner ring 3 and the outer ring 1, the rollers 2 are uniformly embedded and mounted on two sides of the retainer 4, oil filling holes 5 are uniformly arranged on the inner side wall of the inner ring 3, the oil filling holes 5 transversely penetrate through the inner ring 3 and extend to the positions 2 on two sides, and, the outer side of the roller 2 is provided with an inner retainer ring 7, the outer side of the inner retainer ring 7 is provided with an outer retainer ring 9 matched with the inner retainer ring 7, one side of the inner retainer ring 7 is provided with a sealing spring retainer ring 10, the sealing spring retainer ring 10 extends into the outer ring 1, the sealing spring retainer ring 10 can enable the inner retainer ring 7 and the outer retainer ring 9 to be in close contact with each other, the sealing performance is improved, one side, close to the outer ring 1, of the top end of the inner retainer ring 7 is provided with an outer retainer ring 6, an annular groove 11 is formed in the outer retainer ring 6, one side, close to the outer retainer ring 6, of the inner retainer ring 7 is provided with an annular bulge matched with the annular groove 11, the outer retainer ring 6 is prevented from shifting, one side, close to the inner retainer ring 7, in the outer retainer ring 9 is provided with an inner seal ring 8, the outer seal ring 6 and the inner seal, Wear resistance, heat resistance and long service life.

The working principle is as follows: when in use, the plurality of backing bearings are sleeved on the supporting roller, the pressure on the working roller is transmitted to the backing bearings through the middle roller, the sliding friction between two adjacent backing bearings is converted into rolling friction with smaller resistance through the balls 13 on the two sides of the outer ring 1, the abrasion between the backing bearings on the same supporting roller is reduced, the entry of dust into the rollers 2 and the cage 4 is avoided by the inner and outer rings 7, 9, meanwhile, the lubricating oil between the roller 2 and the retainer 4 can be prevented from leaking, the sealing performance of the backing bearing is improved through the outer sealing ring 6 and the inner sealing ring 8, and the lubricating oil can be prevented from leaking out through the elasticity of the sealing spring retainer ring 10, the inner retainer ring 7 and the outer retainer ring 9 can be in close contact, lubricating oil can be added between the roller 2 and the retainer 4 through the oil filling hole 5 for lubrication, the roller 2 can roll conveniently, and the abrasion of the roller 2 and the retainer 4 is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

Claims

1. A close-backed bearing comprising an outer ring (1), rollers (2) and an inner ring (3), characterized in that: both sides of the outer ring (1) are provided with annular steps (14), the top ends of the annular steps (14) are provided with annular ball grooves (15), the inside of the annular ball groove (15) is uniformly provided with balls (13), the inner side of the outer ring (1) is provided with an inner ring (3), and a hollow column (12) is arranged between the inner ring (3) and the outer ring (1), a retainer (4) is arranged between the inner ring (3) and the outer ring (1), and the two sides of the retainer (4) are uniformly embedded with rollers (2), the outer sides of the rollers (2) are provided with inner check rings (7), and the outer side of the inner retainer ring (7) is provided with an outer retainer ring (9) matched with the inner retainer ring (7), an outer sealing ring (6) is arranged on one side of the top end of the inner retainer ring (7) close to the outer ring (1), an inner sealing ring (8) is arranged on one side, close to the inner retainer ring (7), of the inner portion of the outer retainer ring (9).

2. A close-backed bearing according to claim 1, wherein: the side walls of the outer ring (1) and the inner ring (3) are both provided with chromium coatings, and the chromium coatings, the outer ring (1) and the inner ring (3) form a protective structure.

3. A close-backed bearing according to claim 1, wherein: and oil filling holes (5) are uniformly formed in the inner side wall of the inner ring (3), and the oil filling holes (5) transversely penetrate through the inner ring (3) and extend to the rollers (2) on two sides.

4. A close-backed bearing according to claim 1, wherein: the outer sealing ring (6) and the inner sealing ring (8) are both made of nitrile rubber, and the outer sealing ring (6) and the inner sealing ring (8) are both annular.

5. A close-backed bearing according to claim 1, wherein: one side of the inner retainer ring (7) is provided with a sealing spring retainer ring (10), and the sealing spring retainer ring (10) extends to the inner part of the outer ring (1).

6. A close-backed bearing according to claim 1, wherein: the inner portion of the outer sealing ring (6) is provided with an annular groove (11), and one side, close to the outer sealing ring (6), of the inner check ring (7) is provided with an annular bulge matched with the annular groove (11).