CN217381322U

CN217381322U - Labyrinth seal structure bearing

Info

Publication number: CN217381322U
Application number: CN202221126008.9U
Authority: CN
Inventors: 张涛
Original assignee: Wenzhou C&u Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Wenzhou C&u Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-09-06
Anticipated expiration: 2032-05-10

Abstract

The utility model discloses a labyrinth seal structure bearing relates to seal structure bearing technical field, including the bearing inner race, the inner circle has been installed in the inboard activity of bearing inner race, the outside of inner circle is provided with the seal groove structure, the bearing inner race is equipped with the sealing member with the upper portion movable cover of inner circle, the outside of sealing member is provided with the seal lip structure. This technical scheme compares than conventional dustproof construction through adopting labyrinth seal structure, can effectively promote bearing sealing performance, reduces external dust and gets into, promotes the dustproof performance of bearing, stops or reduces inside grease simultaneously and leaks.

Description

Labyrinth seal structure bearing

Technical Field

The utility model relates to a seal structure bearing technical field specifically is labyrinth seal structure bearing.

Background

The conventional dustproof structure on the existing bearing has a general dustproof effect. In the bad working condition that dustproof requirement is higher or the peripheral environment dust is more, just need adopt closed structure to seal, closed structure seal inner lip and bearing inner race are interference contact, so the bearing moment of torsion can increase, transmission efficiency reduces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a labyrinth seal structure bearing to solve the problem of novel labyrinth seal structure bearing among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: labyrinth seal structure bearing, including the bearing inner race, inner circle (2) have been installed in the inboard activity of bearing inner race (1), the outside of inner circle (2) is provided with seal groove structure (5), bearing inner race (1) is equipped with sealing member (3) with the upper portion movable cover of inner circle (2), the sealing member forms sealedly with the cooperation of seal groove structure, the outside of sealing member (3) is provided with seal lip structure (6), seal groove structure (5) are protruding (52) including setting up first arch (51) and the second that are different in the high horizontal position in the inner circle outside, and protruding (52) of second are located the right side of first arch (51), still including setting up the inboard trapezoidal annular in bearing inner race, the cross-section of trapezoidal annular extends along bearing center direction.

Optionally, the sealing lip structure includes an inner lip and an outer lip with different height levels, and the outer lip is located on the right side of the inner lip.

Optionally, grease is filled between the inner lip, the outer lip and the first protrusion.

Optionally, the inner lip and the outer lip are in clearance fit with the first protrusion and the second protrusion.

Optionally, the sealing element is made of a flexible material.

The utility model discloses a technological effect and advantage:

1. novel labyrinth seal structure bearing through adopting labyrinth seal structure, compares than conventional dustproof construction, can effectively promote bearing sealing performance, reduces external dust and gets into, promotes the dustproof performance of bearing, prevents or reduces inside grease simultaneously and leaks.

Drawings

FIG. 1 is a schematic view of a labyrinth seal structure of the present invention;

fig. 2 is an enlarged schematic structural diagram of a point a in fig. 1 according to the present invention.

In the figure: 1. a bearing outer race; 2. an inner ring; 3. a seal member; 4. grease; 5. a seal groove structure; 51. a first protrusion; 52. a second protrusion; 6. a sealing lip structure; 61. an inner lip; 62. and (4) an outer lip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

The utility model provides a bearing with a labyrinth seal structure as shown in figure 1-2, which comprises a bearing outer ring 1; 2. an inner ring; 3. a seal member; 4. grease; 5. a seal groove structure; 51. a first protrusion; 52. a second protrusion; 6. a sealing lip structure; 61. an inner lip; 62. an outer lip; inner circle 2 has been installed in the inboard activity of bearing inner race 1, and the outside of inner circle 2 is provided with seal groove structure 5, and bearing inner race 1 is equipped with sealing member 3 with the upper portion movable cover of inner circle 2, sealing member 3 forms sealedly with the cooperation of seal groove structure 5, and the outside of sealing member 3 is provided with seal lip structure 6, and seal groove structure 5 is including setting up first arch 51 and the second arch 52 that is inequality in the high horizontal position in the inner circle outside, and the second arch 52 is located the right side of first arch 51, still including setting up the trapezoidal annular in bearing inner race inboard, the cross-section of trapezoidal annular extends along bearing center direction.

The sealing lip structure 6 comprises an inner lip 61 and an outer lip 62 which are unequal in height level, and the outer lip 62 is located on the right side of the inner lip 61.

Interior lip 61, outer lip 62 and first protruding 51 between the packing have grease 4, grease 4 for scribble before pressure equipment sealing member 3 between lip 61 and the outer lip 62 in sealing member 3, inside grease 4 of scribbling can effectually prevent outside dust entering bearing, reached dual dirt-proof effect.

The inner lip 61 and the outer lip 62 are in clearance fit with the first protrusion 51 and the second protrusion 52, the first protrusion 51, the second protrusion 52 and the sealing element 3 are machined according to clearance design, the clearance amount is not too large, and meanwhile, the bottom of the inner sealing groove is higher than that of the outer sealing groove, so that the sealing element 3 and the bearing can be conveniently pressed.

Sealing member 3 adopts flexible material to make, and sealing member 3 that flexible material made has certain deformability, the seal groove structure 5 of being convenient for and seal lip structure 6 mutually support when sealing member 3 installs.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Labyrinth seal structure bearing, including bearing inner race (1), its characterized in that: inner circle (2) have been installed in the inboard activity of bearing inner race (1), the outside of inner circle (2) is provided with seal groove structure (5), bearing inner race (1) is equipped with sealing member (3) with the upper portion movable cover of inner circle (2), the sealing member forms sealedly with the cooperation of seal groove structure, the outside of sealing member (3) is provided with seal lip structure (6), seal groove structure (5) are including setting up first arch (51) and second arch (52) that are inequality at the high horizontal position in the inner circle outside, and second arch (52) are located the right side of first arch (51), still including setting up the inboard trapezoidal annular in bearing inner race, the cross-section of trapezoidal annular extends along bearing center direction.

2. The labyrinth-seal structure bearing according to claim 1, characterized in that: the sealing lip structure (6) comprises an inner lip (61) and an outer lip (62) which are different in height and horizontal position, and the outer lip (62) is located on the right side of the inner lip (61).

3. The labyrinth-seal structure bearing according to claim 2, characterized in that: grease (4) is filled between the inner lip (61), the outer lip (62) and the first bulge (51).

4. The labyrinth-seal structure bearing according to claim 2, characterized in that: the inner lip (61) and the outer lip (62) are in clearance fit with the first protrusion (51) and the second protrusion (52) in pairs.

5. The labyrinth-seal structure bearing according to claim 1, characterized in that: the sealing element (3) is made of flexible materials.