CN218718243U

CN218718243U - Follow-on antifriction bearing seal structure

Info

Publication number: CN218718243U
Application number: CN202223200600.1U
Authority: CN
Inventors: 马涛; 李俊强; 左朋辉; 袁航; 张芳; 李淑贞
Original assignee: China Machinery Luoyang Equipment Technology Co ltd
Current assignee: China Machinery Luoyang Equipment Technology Co ltd
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-03-24
Anticipated expiration: 2032-12-01

Abstract

The utility model discloses an improved rolling bearing sealing structure, which comprises a bearing outer ring and a bearing inner ring, wherein the bearing inner ring is arranged at the inner side of the bearing outer ring; a rolling body and a retainer are arranged between the bearing outer ring and the bearing inner ring; sealing rings and gaskets are symmetrically arranged on the end surfaces of the two sides of the bearing outer ring and the bearing inner ring; the sealing ring comprises a sealing ring A and a sealing ring B which are symmetrically arranged; the gasket comprises a gasket A and a gasket B which are symmetrically arranged; the sealing ring A and the sealing ring B are respectively arranged at the inner sides of the gasket A and the gasket B and are respectively arranged in sealing grooves axially arranged on the end faces of the two sides of the bearing outer ring; and the gasket A and the gasket B are arranged on the bearing outer ring. The utility model discloses in order to solve among the prior art antifriction bearing in the adverse circumstances use the sealing washer easily not hard up, drop, dustproof grease proofing effect is relatively poor, and has the technical problem of certain oil leak fat risk.

Description

Follow-on antifriction bearing seal structure

Technical Field

The utility model belongs to the technical field of the bearing, mainly relate to a follow-on antifriction bearing seal structure.

Background

A rolling bearing is a precise mechanical element that reduces friction loss by changing sliding friction between a running shaft and a shaft seat into rolling friction. The rolling bearing generally comprises four parts, namely an inner ring, an outer ring, a rolling body and a retainer, wherein the inner ring is used for being matched with a shaft and rotating together with the shaft; the outer ring is matched with the bearing seat to play a supporting role; the rolling bodies are uniformly distributed between the inner ring and the outer ring by virtue of the retainer, and the shape, size and number of the rolling bodies directly influence the service performance and service life of the rolling bearing; the retainer can enable the rolling bodies to be uniformly distributed and guide the rolling bodies to rotate to play a lubricating role. In practical application, in order to make the rolling bearing durable and reduce friction force, lubricant is often added between the rolling element and the inner ring and the outer ring, and in order to prevent external impurities from entering between the rolling element and the inner ring and the outer ring of the rolling bearing, a sealing structure is often arranged at the open part of the rolling element between the inner ring and the outer ring so as to prevent dust from entering between the rolling element and the inner ring and the outer ring and increase the abrasion of the rolling element or the inner ring or the outer ring; what generally adopt at present is that contact adhesive tape sealing washer, processing has the seal groove on the bearing ring, fill in the seal groove with the adhesive tape sealing washer can, characterized by: the sealing ring is simple to install, convenient to replace, low in price, high in applicability to general working conditions and good in sealing effect.

However, the sealing structure is difficult to meet in the occasions with severe environments and high sealing effect requirements in the coal mine machinery industry and the like, and because coal mine dust and particles are more, the sealing ring is frequently impacted by the particles during the operation of the bearing, so that the sealing ring is possible to loosen and even fall off, the dustproof and oilproof effects are poor, and a certain risk of oil leakage is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a follow-on antifriction bearing seal structure to solve among the prior art antifriction bearing and use the sealing washer easily not hard up, drop under adverse circumstances, dustproof grease proofing effect is relatively poor, and has the technical problem of certain oil leak fat risk.

For realizing the purpose of the utility model, the technical scheme who adopts as follows:

an improved rolling bearing sealing structure comprises a bearing outer ring and a bearing inner ring, wherein the bearing inner ring is arranged on the inner side of the bearing outer ring; a rolling body and a retainer are arranged between the bearing outer ring and the bearing inner ring; sealing rings and gaskets are symmetrically arranged on the end surfaces of the two sides of the bearing outer ring and the bearing inner ring; the sealing ring comprises a sealing ring A and a sealing ring B which are symmetrically arranged; the gasket comprises a gasket A and a gasket B which are symmetrically arranged; the sealing ring A and the sealing ring B are respectively arranged at the inner sides of the gasket A and the gasket B and are respectively arranged in sealing grooves axially arranged on the end faces of the two sides of the bearing outer ring; and the gasket A and the gasket B are arranged on the bearing outer ring.

An outer raceway matched with the rolling body is arranged on the inner diameter of the bearing outer ring; the sealing grooves arranged on the end faces of the two sides of the bearing outer ring comprise a sealing groove A and a sealing groove B, and an outer inner diameter A and an outer inner diameter B which are matched with the gasket are arranged on the end faces of the sealing grooves.

An inner raceway matched with the rolling body is arranged on the outer diameter of the bearing inner ring; and the end surfaces of two sides of the bearing inner ring are respectively and symmetrically provided with a sealing step A, a sealing step B, an inner diameter A and an outer diameter B.

The sealing rings are all sealed by adopting integral rubber, the upper ends of the sealing rings are set as fixed ends, and the lower ends of the sealing rings are set as sealing ends; the fixed end is in interference fit with a sealing groove on the bearing outer ring; the bottom of the sealing end is designed in a sealing lip pressing-down mode, and the pressing-down position of the sealing lip is in contact with a sealing step A and a sealing step B of the bearing inner ring.

The gasket is an integral metal gasket, the outer diameter of the gasket is in interference fit with the outer inner diameter A and the outer inner diameter B of the bearing outer ring, the inner diameter of the gasket is in clearance fit with the inner diameter A and the outer diameter B of the bearing inner ring, and the end face of the gasket is pressed on the end face of the sealing ring.

The retainer is an integral retainer with one open end; the retainer is provided with circular pockets and rectangular pockets which are distributed at intervals.

Compared with the prior art, the utility model discloses following beneficial effect has: through the arrangement of the axial sealing groove and the metal gasket gland on the outer side of the sealing ring, particles can be effectively prevented from impacting the sealing ring; and the fixed end and the sealing end on the sealing ring are matched for use, so that dust and water mist can be effectively prevented from entering, and lubricating grease in the bearing is prevented from leaking. The sealing structure has the advantages of simple installation and good sealing effect, and effectively solves the technical problems that the sealing ring is easy to loosen and fall off when the rolling bearing is used in a severe environment, the dustproof and oil-proof effect is poor, and certain oil leakage risk exists.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a bearing outer ring structure.

Fig. 3 is a schematic view of the structure of the bearing inner ring.

Fig. 4 is a schematic view of a seal ring structure.

Fig. 5 is a schematic view of a gasket construction.

In the figure: 1. bearing outer ring, 2, bearing inner ring, 3, rolling body, 4, cage, 5, seal ring, 51, seal ring A,52, seal ring B,6, gasket, 7, gasket A,8, gasket B,9, outer raceway, 91, inner diameter, 10, seal groove, 101 seal groove A,102, seal groove B,12, outer inner diameter A,13, outer inner diameter B,14, inner raceway, 141, outer diameter, 15, seal step A,16, seal step B,17, inner and outer diameter A,18, inner and outer diameter B,19, fixed end, 20, seal end, 21, seal ring end face, 22, gasket outer diameter, 23, gasket inner diameter, 24, gasket end face.

Detailed Description

The present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-5, an improved rolling bearing sealing structure includes a bearing outer ring 1 and a bearing inner ring 2, where the bearing inner ring 2 is disposed inside the bearing outer ring 1; a rolling body 3 and a retainer 4 are arranged between the bearing outer ring 1 and the bearing inner ring 2; the retainer 4 is an integral retainer with one open end; the retainer 4 is provided with circular pockets and rectangular pockets which are distributed at intervals; the two side end faces of the bearing outer ring 1 and the bearing inner ring 2 are symmetrically provided with a sealing ring 5 and a gasket 6; the sealing ring 5 comprises a sealing ring A51 and a sealing ring B52 which are symmetrically arranged; the gasket 6 comprises a gasket A7 and a gasket B8 which are symmetrically arranged; the sealing ring A51 and the sealing ring B52 are respectively arranged on the inner sides of the gasket A7 and the gasket B8 and are respectively arranged in the sealing grooves 10 axially arranged on the end faces of the two sides of the bearing outer ring 1; the sealing groove 10 is an axial groove, so that the sealing effect is better compared with the conventional radially-arranged sealing groove, and the sealing ring is not easy to loosen and fall off; the gasket A7 and the gasket B8 are arranged on the bearing outer ring 1; the gasket 6 is an integral metal gasket, the outer diameter 22 of the gasket is in interference fit with the outer inner diameter A12 and the outer inner diameter B13 of the bearing outer ring 1, the inner diameter 23 of the gasket is in clearance fit with the inner diameter A17 and the outer diameter B18 of the bearing inner ring 2, and the end face 24 of the gasket is pressed on the end face 21 of the sealing ring. 6 glands of metal packing ring are used in the outside of sealing washer 5, form first labyrinth design between metal packing ring 6 and the sealing washer 5, prevent effectively that the particulate matter from striking sealing washer 5. An outer raceway 9 matched with the rolling body 3 is arranged on the inner diameter 91 of the bearing outer ring 1; the sealing grooves 10 arranged on the end faces of the two sides of the bearing outer ring 1 comprise a sealing groove A101 and a sealing groove B102, and the end faces of the sealing grooves are provided with an outer inner diameter A12 and an outer inner diameter B13 which are matched with the metal gasket 6; an inner raceway 14 matched with the rolling body 3 is arranged on the outer diameter 141 of the bearing inner ring 2; the end faces of two sides of the bearing inner ring 2 are respectively and symmetrically provided with a sealing step A15, a sealing step B16, an inner diameter A17, an outer diameter A18 and an inner diameter B18; the sealing rings 5 are all sealed by adopting integral rubber, the upper ends of the sealing rings are provided with fixed ends 19, and the lower ends of the sealing rings are provided with sealing ends 20; the fixed end 19 is in interference fit with the sealing groove 10 on the bearing outer ring 4; the bottom of the sealing end 20 is designed in a sealing lip pressing-down mode, and the pressing-down position of the sealing lip is in contact with the sealing step A15 and the sealing step B16 of the bearing inner ring 2. Through 5 one end of sealing washer is stiff end 19, with outer lane seal groove interference fit, the other end is sealed end 20, adopts seal lip push-down type design, and with the contact seal of inner circle sealing step, form the sealed line of defence of second way, can effectively prevent that dust and water smoke from invading to prevent that the inside lubricating grease of bearing from leaking.

The utility model has the advantages that the conventional radial sealing groove is changed into the axial sealing groove, the metal gasket 6 is used for pressing the outer side of the sealing ring 5, and a first labyrinth design is formed between the metal gasket 6 and the sealing ring 5, so that the particles can be effectively prevented from impacting the sealing ring 5; sealing washer 5 one end is stiff end 19, with bearing inner race 1's seal groove 10 interference fit, the other end is sealed end 20, adopts seal lip push-down formula design, and with the sealed step contact seal of bearing inner race 2, form the sealed line of defence of second way, can effectively prevent the invasion of dust and water smoke to prevent that the inside lubricating grease of bearing from leaking. The sealing structure has the advantages of simple installation and good sealing effect, and effectively solves the technical problems that the sealing ring is easy to loosen and fall off when the rolling bearing is used in a severe environment, the dustproof and oil-proof effect is poor, and certain oil leakage risk exists.

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 design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an improved generation antifriction bearing seal structure, includes bearing inner race (2) and bearing outer lane (1), characterized by: the bearing inner ring (2) is arranged on the inner side of the bearing outer ring (1); a rolling body (3) and a retainer (4) are arranged between the bearing outer ring (1) and the bearing inner ring (2); sealing rings (5) and gaskets (6) are symmetrically arranged on the end surfaces of the two sides of the bearing outer ring (1) and the bearing inner ring (2); the sealing ring (5) comprises a sealing ring A (51) and a sealing ring B (52) which are symmetrically arranged; the gasket (6) comprises a gasket A (7) and a gasket B (8) which are symmetrically arranged; the sealing ring A (51) and the sealing ring B (52) are respectively arranged on the inner sides of the gasket A (7) and the gasket B (8) and are respectively arranged in the sealing grooves (10) axially arranged on the end faces of the two sides of the bearing outer ring (1); and the gasket A (7) and the gasket B (8) are arranged on the bearing outer ring (1).

2. The improved rolling bearing seal structure according to claim 1, characterized in that: an outer raceway (9) matched with the rolling body (3) is arranged on the inner diameter (91) of the bearing outer ring (1); the sealing groove (10) arranged on the end faces of the two sides of the bearing outer ring (1) comprises a sealing groove A (101) and a sealing groove B (102), and an outer inner diameter A (12) and an outer inner diameter B (13) matched with the gasket (6) are arranged on the end faces of the sealing groove A (101) and the sealing groove B (102).

3. The improved rolling bearing seal structure according to claim 1, characterized in that: an inner raceway (14) matched with the rolling body (3) is arranged on the outer diameter of the bearing inner ring (2); and the end surfaces of two sides of the bearing inner ring (2) are respectively and symmetrically provided with a sealing step A (15), a sealing step B (16), an inner diameter A (17), an outer diameter B (18) and an outer diameter A (17).

4. The improved rolling bearing seal structure according to claim 1, characterized in that: the sealing rings (5) are all sealed by adopting integral rubber, the upper ends of the sealing rings are provided with fixed ends (19), and the lower ends of the sealing rings are provided with sealing ends (20); the fixed end (19) is in interference fit with a sealing groove (10) on the bearing outer ring (1); the bottom of the sealing end (20) is designed in a sealing lip pressing-down mode, and the pressing-down position of the sealing lip is in contact with a sealing step A (15) and a sealing step B (16) of the bearing inner ring (2).

5. The improved rolling bearing seal structure according to claim 1, characterized in that: the gasket (6) is an integral metal gasket, the outer diameter (22) of the gasket is in interference fit with the outer inner diameter A (12) and the outer inner diameter B (13) of the bearing outer ring (1), the inner diameter (23) of the gasket is in clearance fit with the inner diameter A (17) and the outer diameter B (18) of the bearing inner ring (2), and the end face (24) of the gasket is pressed on the end face (21) of the sealing ring.

6. The improved rolling bearing seal structure according to claim 1, characterized in that: the retainer (4) is an integral retainer with an opening at one end; the retainer (4) is provided with circular pockets and rectangular pockets which are distributed at intervals.