CN210949528U

CN210949528U - Double-retainer ring sealing type cylindrical roller bearing

Info

Publication number: CN210949528U
Application number: CN201921702903.9U
Authority: CN
Inventors: 谢世荣; 俞强; 刘长民
Original assignee: Jiangsu Dena Seiko Bearing Co ltd
Current assignee: Jiangsu Dena Seiko Bearing Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-07
Anticipated expiration: 2029-10-12

Abstract

The utility model relates to a two retainer ring canned type cylindrical roller bearings belongs to bearing technical field. Including bearing inner race (4), bearing inner race (1) and rolling element (5), between bearing inner race (1) and bearing inner race (4), its characterized in that is located in rolling element (5): the bearing is characterized in that retaining rings (2) are respectively arranged on two sides of the rolling body (5), first grooves (a) are respectively formed in end faces of positioning gears on two sides of the bearing outer ring (4), second grooves (b) are formed in outer ring surfaces of the retaining rings (2) on two sides, the first grooves and the second grooves are opposite at intervals to form sealing cavities, sealing elements (3) are arranged in the sealing cavities, the outer ring of each sealing element (3) is clamped in the corresponding first groove, and the inner ring of each sealing element (3) is clamped in the corresponding second groove. This application is simple structure not only, has avoided outside impurity to get into inside the bearing moreover, has improved the life of bearing.

Description

Double-retainer ring sealing type cylindrical roller bearing

Technical Field

The utility model relates to a two retainer ring canned type cylindrical roller bearings belongs to bearing technical field.

Background

Roller bearings are one of the rolling bearings, and are one of the components widely used in modern machinery. The roller bearing mainly comprises a self-aligning roller bearing, a thrust self-aligning roller bearing, a tapered roller, a cylindrical roller bearing and other structural types. The rolling body of the cylindrical roller bearing is a cylindrical roller, and is a centripetal rolling bearing. The internal structure of the cylindrical roller bearing adopts rollers which are arranged in parallel, and space retainers or spacing blocks are arranged between the rollers, so that the inclination of the rollers or the mutual friction between the rollers can be prevented. The cylindrical roller bearing belongs to a separated bearing, and is very convenient to mount and dismount. The cylindrical roller bearing can bear large radial load and is suitable for being used in high-speed running occasions.

At present, the cylindrical roller bearings used in the market are usually open bearings, i.e. the bearings are not provided with a sealing structure, and the bearings are not provided with pollution-proof and dust-proof devices such as a sealing member, so that the rollers in the bearings are directly exposed to the production, processing and use environments. And in different environment use, harmful substance such as dust, steam, mud, greasy dirt or impurity foreign matter in the environment gets into inside the bearing structure very easily, causes cylindrical roller and interior outer lane raceway working face wearing and tearing aggravation very easily for friction, wearing and tearing aggravation between cylindrical roller and inner circle and the outer lane lead to the bearing card to die even, influence the life of bearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a two retainer ring canned type cylindrical roller bearing is provided to above-mentioned prior art, effectively seals cylindrical roller bearing, prevents that outside impurity from getting into inside the bearing, improves the life of bearing.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a two retaining ring canned type cylindrical roller bearing, includes bearing inner race, bearing inner race and rolling element, the rolling element is located between bearing inner race and the bearing outer race, set up first recess on the terminal surface of the location shelves of bearing inner race both sides respectively, the rolling element both sides are equipped with the retaining ring respectively, the retaining ring sets up with the bearing inner race is coaxial, and the internal diameter is the same. The outer ring surface of the retainer ring is provided with a second groove, the first groove and the second groove are opposite at intervals to form a sealing cavity, a sealing element is arranged in the sealing cavity, the outer ring of the sealing element is clamped in the first groove, and the inner ring of the sealing element is clamped in the second groove.

Preferably, the cross section of the second groove is in a stepped shape.

Preferably, the sealing element comprises a core and an elastic member wrapped on the periphery of the core, an outer ring of the elastic member is correspondingly clamped into the first groove, and an inner ring of the elastic member is correspondingly clamped into the second groove.

Preferably, the sealing element comprises a core and an elastic member wrapping the core, an outer ring of the elastic member is correspondingly clamped into the first groove, and the outer ring and the first groove are in interference fit to keep the sealing element in a trend of inward compression; the inner ring of the elastic member correspondingly bites the step of the second groove.

Preferably, the resilient member is formed with a pair of biting teeth formed therein for biting into the step of the second groove.

Compared with the prior art, the utility model has the advantages of: a double-retainer-ring sealing type cylindrical roller bearing is characterized in that retainer rings are arranged on two sides of a rolling body respectively, and a sealing element is arranged in an annular gap between the retainer rings and a bearing outer ring, so that the rolling body is sealed. Not only simple structure has avoided outside impurity to get into inside the bearing moreover, has improved the life of bearing.

Drawings

Fig. 1 is a schematic view of a double retainer sealing type cylindrical roller bearing according to an embodiment of the present invention;

FIG. 2 is an enlarged view of the portion V in FIG. 1;

in the figure, 1, a bearing inner ring, 2 retainer rings, 3 sealing elements, 3.1 cores, 3.2 elastic members, 4 bearing outer rings, 5 rolling bodies and 6 teeth are meshed.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1, the double-retainer sealed cylindrical roller bearing in this embodiment includes a bearing outer ring 4, a bearing inner ring 1, and a rolling element 5, where the rolling element 5 is disposed between the bearing outer ring 4 and the bearing inner ring 1, retainer rings 2 are respectively disposed on both sides of the rolling element 5, the retainer rings 2 on both sides and the bearing inner ring 1 are coaxially disposed, an inner diameter of each retainer ring 2 is the same as an inner diameter of the bearing inner ring 1, so that a radial direction is smooth, and an outer diameter of each retainer ring 2 is higher than an outer diameter of the bearing inner ring 1. And positioning gears on two sides of the bearing outer ring 4 are also blocked on two sides of the rolling body 5. Furthermore, referring to fig. 1, an annular gap is formed between the bearing outer ring 4 positioning step and the retainer ring 2, the rolling elements 5 are exposed by the annular gap, and the annular gap needs to be sealed in order to protect the rolling elements 5.

Set up the first recess an of hoop respectively on the terminal surface of the location shelves of 4 both sides of bearing inner race, set up the second recess b of hoop on the outer annular surface of retaining ring 2, first recess an constitutes sealed chamber with second recess b interval relatively, is equipped with sealing member 3 in the sealed chamber, and sealing member 3 plays sealed effect to sealed chamber, effectively seals rolling element 5, prevents that outside impurity from getting into inside the bearing. Wherein, the sealing member 3 includes core 3.1 and the elastic component 3.2 of parcel in the periphery of core 3.1 that the cold-rolled steel sheet was made, and the elastic component 3.2 outer lane card is in first recess a, and the elastic component 3.2 inner lane card is in second recess b.

The cross section of the second groove b is in a step shape, and the inner ring of the elastic component 3.2 is provided with a pile of biting teeth 6 to form a double-lip sealing structure for biting the step of the second groove b. The outer ring of the elastic component 3.2 is of a special-shaped structure and is in interference fit with the first groove a, so that the elastic component is always pressed inwards.

The elastic member 3.2 is a vulcanized nitrile rubber.

The cylindrical roller bearing with the structure is characterized in that the two sides of the rolling body 5 are respectively provided with the check rings 2, the sealing elements 3 are arranged between the check rings 2 and the bearing outer ring 4, the sealing of the rolling body 5 is realized, external impurities are prevented from entering the bearing, and the service life of the bearing is prolonged.

In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a two retainer ring canned type cylindrical roller bearings, includes bearing inner race (4), bearing inner race (1) and rolling element (5), between bearing inner race (1) and bearing inner race (4) is located in rolling element (5), its characterized in that: the bearing is characterized in that retaining rings (2) are respectively arranged on two sides of the rolling body (5), first grooves (a) are respectively formed in end faces of positioning gears on two sides of the bearing outer ring (4), second grooves (b) are formed in outer ring surfaces of the retaining rings (2) on two sides, the first grooves and the second grooves are opposite at intervals to form sealing cavities, sealing elements (3) are arranged in the sealing cavities, the outer ring of each sealing element (3) is clamped in the corresponding first groove, and the inner ring of each sealing element (3) is clamped in the corresponding second groove.

2. The double-cage sealed-type cylindrical roller bearing according to claim 1, wherein: the retainer ring (2) and the bearing inner ring (1) are coaxially arranged and have the same inner diameter.

3. The double-cage sealed-type cylindrical roller bearing according to claim 1, wherein: the cross section of the second groove is in a step shape.

4. The double-cage sealed-type cylindrical roller bearing according to claim 1, wherein: the sealing element (3) comprises a core (3.1) and an elastic component (3.2) wrapped on the periphery of the core (3.1), the outer ring of the elastic component (3.2) is correspondingly clamped into the first groove, and the inner ring is correspondingly clamped into the second groove.

5. The double-cage sealed-type cylindrical roller bearing according to claim 3, wherein: the sealing element (3) comprises a core (3.1) and an elastic component (3.2) wrapping the core (3.1), the outer ring of the elastic component (3.2) is correspondingly clamped into the first groove, and the outer ring and the first groove are in interference fit to keep the trend that the sealing element (3) is pressed inwards; the inner ring of the elastic component (3.2) correspondingly bites the step of the second groove.

6. The double-cage sealed-type cylindrical roller bearing according to claim 5, wherein: the elastic member is formed with a pair of biting teeth (6) formed inside thereof for biting the step of the second groove.