CN215058943U

CN215058943U - Double-layer sealed deep groove ball bearing

Info

Publication number: CN215058943U
Application number: CN202120915936.2U
Authority: CN
Inventors: 颜传青
Original assignee: Delmar Bearing Co ltd
Current assignee: Delmar Bearing Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-07
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a double-deck sealed deep groove ball bearing belongs to deep groove ball bearing technical field. The prior art has poor sealing performance. This double-deck sealed deep groove ball bearing includes the bearing inner race, the holder and set up the ball in the holder, be provided with first sealing washer on the bearing inner race, first sealing washer is connected with the second sealing washer through connecting device, be provided with the outer raceway on the bearing inner race, be provided with interior raceway on the bearing inner race, outer raceway and interior raceway are used for supplying the ball to roll, bearing inner race inboard is provided with the standing groove, first sealing washer includes first end and second end, first end is used for inserting and fixes in the standing groove, second end and bearing inner race clearance fit, the second sealing washer has first strip of paper used for sealing and second strip of paper used for sealing to ball one side extension, first strip of paper used for sealing and second strip of paper used for sealing cooperation formation guide way, the guide way is used for grease direction ball, first strip of paper used for sealing and bearing inner race clearance fit, second strip of paper used for sealing and bearing inner race clearance fit. The sealing effect is good.

Description

Double-layer sealed deep groove ball bearing

Technical Field

The utility model belongs to the technical field of deep groove ball bearing, in particular to double-deck sealed deep groove ball bearing.

Background

In the mechanical industry, a bearing is a mechanical device which is widely applied, the sealing performance of the bearing is an important index of the bearing, and the sealing performance is mainly reflected in the aspects of oil leakage prevention, grease leakage prevention, dust prevention, water prevention and the like of the bearing. The bearing of different usage requires the diverse to sealing performance, and wherein, bearing sealing performance does not accord with or unsatisfied operation requirement, can lead to invasion such as external silt, dust and steam, and the grease leakage volume in the bearing is more moreover for frictional force grow between raceway and the ball, aggravate the wearing and tearing of raceway and ball, make raceway and ball surface produce fatigue and peel off, seriously influence the life and the quality of bearing.

Disclosure of Invention

The utility model aims at providing a double-deck sealed deep groove ball bearing to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: a double-layer sealed deep groove ball bearing is characterized by comprising a bearing outer ring, a bearing inner ring, a retainer and balls arranged in the retainer, wherein a first sealing ring is arranged on the bearing outer ring, the first sealing ring is connected with a second sealing ring through a connecting device, an outer raceway is arranged on the bearing outer ring, an inner raceway is arranged on the bearing inner ring, the outer raceway and the inner raceway are used for the balls to roll, a placing groove is arranged on the inner side of the bearing outer ring, the first sealing ring comprises a first end and a second end, the first end is used for being inserted and fixed in the placing groove, the second end is in clearance fit with the bearing inner ring, a first sealing strip and a second sealing strip extend to one side of the balls from the second sealing ring, the first sealing strip and the second sealing strip are matched to form a guide groove, and the guide groove is used for guiding grease to the balls, the first seal is in clearance fit with the bearing outer ring, and the second seal is in clearance fit with the bearing inner ring.

The utility model discloses a theory of operation: when using this bearing, the bearing inner race is the retainer plate, first sealing washer can block external dust, silt and steam invasion, the second sealing washer is sealed once more, make the anti-impurity effect better, the guide way that first strip of paper used for sealing on the second sealing washer and second strip of paper used for sealing cooperation formed can be leading-in with the grease to the ball direction, greatly reduced the leakage quantity of grease, the life of extension bearing, because second end and bearing inner circle clearance fit, first strip of paper used for sealing and bearing inner race clearance fit, second strip of paper used for sealing and bearing inner circle clearance fit, consequently when the bearing rotates at a high speed, can not damage whole bearing and two sealing washers because of the high temperature that high rotational speed arouses, when avoiding the sealing washer to damage, sealed effect has been improved.

In the double-layer sealed deep groove ball bearing, the first sealing ring and the second sealing ring are made of chloroprene rubber.

In the double-layer sealed deep groove ball bearing, the first sealing ring and the second sealing ring are both internally provided with metal support rings.

In the double-layer sealed deep groove ball bearing, a first groove is formed in one side, facing the ball, of the bearing inner ring, and the first groove is used for the second end to stretch into.

In the above-mentioned double-sealed deep groove ball bearing, the second end is in clearance fit with the first groove.

In the double-layer sealed deep groove ball bearing, the metal support ring is made of steel.

In the above double-layer sealed deep groove ball bearing, the connecting device includes a connecting ring, one side of the connecting ring is connected to the metal support ring in the first seal ring, and the other side of the connecting ring is connected to the metal support ring in the second seal ring.

In the above double-layer sealed deep groove ball bearing, the cross sections of the first seal and the second seal are right triangles.

In the above double-layer sealed deep groove ball bearing, the first seal and the second seal are symmetrically arranged.

In the double-layer sealed deep groove ball bearing, the inner side of the bearing outer ring is further provided with a fixing groove, the second sealing ring comprises a fixing part and a working part, and the fixing part is used for being inserted into and fixed in the fixing groove.

In the double-layer sealed deep groove ball bearing, a second groove is formed in one side, facing the ball, of the bearing inner ring, and the working portion is in clearance fit with the second groove.

Compared with the prior art, the utility model has the advantages of sealed effectual.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

Fig. 2 is a schematic view of the partial cross-sectional structure of the present invention.

In the figure, 1, a bearing outer ring; 2. a bearing inner race; 3. a holder; 4. a ball bearing; 5. a first seal ring; 6. a second seal ring; 7. an outer raceway; 8. an inner raceway; 9. a placement groove; 10. a first end; 11. a second end; 12. a first seal; 13. a second seal; 14. a guide groove; 15. a metal support ring; 16. a first groove; 17. a second groove; 18. a connecting ring; 19. fixing grooves; 20. a fixed part; 21. a working part.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-2, the double-layer sealed deep groove ball bearing includes a bearing outer ring 1, a bearing inner ring 2, a retainer 3, and balls 4 disposed in the retainer 3, the bearing outer ring 1 is provided with a first sealing ring 5, the first sealing ring 5 is connected to a second sealing ring 6 through a connecting device, the bearing outer ring 1 is provided with an outer raceway 7, the bearing inner ring 2 is provided with an inner raceway 8, the outer raceway 7 and the inner raceway 8 are used for allowing the balls 4 to roll, a placing groove 9 is disposed inside the bearing outer ring 1, the first sealing ring 5 includes a first end 10 and a second end 11, the first end 10 is inserted into and fixed in the placing groove 9, the second end 11 is in clearance fit with the bearing inner ring 2, the second sealing ring 6 extends toward one side of the balls 4 to form a first seal 12 and a second seal 13, the first seal 12 and the second seal 13 are matched to form a guide groove 14, the guide groove 14 is used for guiding grease to the balls 4, the first seal 12 is in clearance fit with the bearing outer ring 1, and the second seal 13 is in clearance fit with the bearing inner ring 2.

In more detail, the first sealing ring 5 and the second sealing ring 6 are made of chloroprene rubber, and the chloroprene rubber has good oil resistance, chemical corrosion resistance and heat resistance, and can be well applied to bearings.

In a detailed description, the metal support ring 15 is arranged inside the first seal ring 5 and the second seal ring 6, and the metal support ring 15 plays a supporting and shaping role for the first seal ring 5 and the second seal ring 6, so that the first seal ring 5 and the second seal ring 6 are more stable during the bearing rotation work.

In a further elaboration, the bearing inner ring 2 is provided with a first groove 16 towards the ball 4, and the first groove 16 is used for the second end 11 to extend into, so that the distance of dust entering the bearing is increased, and the dust can be further prevented from entering the bearing.

In more detail, the second end 11 and the first groove 16 are in clearance fit, when the bearing rotates, the bearing inner ring 2 rotates at a high speed because the bearing outer ring 1 is a fixed ring, and the clearance fit structure can prevent the first seal ring 5 from being damaged by heat generated when the bearing inner ring 2 rotates at a high speed.

In more detail, the metal support ring 15 is made of steel, so that the steel has high strength, good heat resistance and toughness, and is not easy to deform after long-time work.

In a further elaboration, the connecting device comprises a connecting ring 18, one side of the connecting ring 18 is connected with the metal support ring 15 in the first sealing ring 5, and the other side of the connecting ring 18 is connected with the metal support ring 15 in the second sealing ring 6, so that the first sealing ring 5 and the second sealing ring 6 are connected together, can be installed and detached simultaneously, and is convenient and practical.

In more detail, the cross sections of the first seal 12 and the second seal 13 are right triangles.

In a further elaboration, first strip of paper used for sealing 12 and the symmetrical setting of second strip of paper used for sealing 13, second sealing washer 6 forms the C font with the cross section of first strip of paper used for sealing 12, second strip of paper used for sealing 13, no matter the bearing rotates to any angle, can be with grease direction ball 4, has reduced the leakage of grease greatly, and simple structure is practical.

In a further detail, the inner side of the bearing outer ring 1 is further provided with a fixing groove 19, the second sealing ring 6 comprises a fixing portion 20 and a working portion 21, the fixing portion 20 is used for being inserted into and fixed in the fixing groove 19, the second sealing ring 6 is doubly fixed through the fixing portion 20 and the connecting ring 18, the structure is firm and reliable, and the bearing works more stably.

In a further detail, the bearing inner ring 2 is provided with the second groove 17 towards one side of the ball 4, the working part 21 is in clearance fit with the second groove 17, the second sealing ring 6 is prevented from being damaged by heat generated by rotation of the bearing inner ring 2 when the bearing works, and the bearing inner ring sealing device is safe and reliable.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although a large number of terms are used here more, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The double-layer sealed deep groove ball bearing is characterized by comprising a bearing outer ring (1), a bearing inner ring (2), a retainer (3) and balls (4) arranged in the retainer (3), wherein a first sealing ring (5) is arranged on the bearing outer ring (1), the first sealing ring (5) is connected with a second sealing ring (6) through a connecting device, an outer raceway (7) is arranged on the bearing outer ring (1), an inner raceway (8) is arranged on the bearing inner ring (2), the outer raceway (7) and the inner raceway (8) are used for allowing the balls (4) to roll, a placing groove (9) is arranged on the inner side of the bearing outer ring (1), the first sealing ring (5) comprises a first end (10) and a second end (11), the first end (10) is used for being inserted into and fixed in the placing groove (9), and the second end (11) is in clearance fit with the bearing inner ring (2), second sealing washer (6) have first seal (12) and second seal (13) to ball (4) one side extension, first seal (12) and second seal (13) cooperation form guide way (14), guide way (14) are used for grease direction ball (4), first seal (12) with bearing inner race (1) clearance fit, second seal (13) with bearing inner race (2) clearance fit.

2. The deep groove ball bearing with double sealing according to claim 1, characterized in that the first sealing ring (5) and the second sealing ring (6) are made of neoprene.

3. The deep groove ball bearing with double sealing according to claim 1, wherein a metal support ring (15) is arranged inside each of the first sealing ring (5) and the second sealing ring (6), and the metal support ring (15) is made of steel.

4. The double-sealed deep groove ball bearing according to claim 1, characterized in that the inner bearing ring (2) is provided with a first groove (16) on the side facing the balls (4), the first groove (16) being adapted for the second end (11) to extend into.

5. The double-sealed deep groove ball bearing according to claim 4, characterized in that the second end (11) is a clearance fit with the first groove (16).

6. The deep groove ball bearing with double sealing according to claim 3, characterized in that the connection means comprise a connection ring (18), one side of the connection ring (18) being connected to the metal support ring (15) in the first sealing ring (5) and the other side of the connection ring (18) being connected to the metal support ring (15) in the second sealing ring (6).

7. The deep groove ball bearing with double sealing according to claim 1, characterized in that the first seal (12) and the second seal (13) are right triangle in cross section.

8. The deep groove ball bearing with double sealing according to claim 1, characterized in that the first seal (12) and the second seal (13) are arranged symmetrically.

9. The deep groove ball bearing with double sealing according to claim 1, wherein the inner side of the bearing outer ring (1) is further provided with a fixing groove (19), the second sealing ring (6) comprises a fixing portion (20) and a working portion (21), and the fixing portion (20) is used for being inserted into and fixed in the fixing groove (19).

10. The deep groove ball bearing with double sealing according to claim 9, characterized in that the inner bearing ring (2) is provided with a second groove (17) on the side facing the balls (4), the working portion (21) being in clearance fit with the second groove (17).