CN217977360U - High-speed wear-resisting oil seal structure - Google Patents
High-speed wear-resisting oil seal structure Download PDFInfo
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- CN217977360U CN217977360U CN202221965456.8U CN202221965456U CN217977360U CN 217977360 U CN217977360 U CN 217977360U CN 202221965456 U CN202221965456 U CN 202221965456U CN 217977360 U CN217977360 U CN 217977360U
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- oil seal
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Abstract
The utility model discloses a high-speed wear-resistant oil seal structure, which comprises a framework and a rubber body, wherein the framework is fixedly arranged in the rubber body, one side of the rubber body, which is close to a rotating shaft, is provided with a main sealing lip which is in contact with the surface of the rotating shaft, and the main sealing lip is connected with the rubber body through a sealing waist part; the end face, which is in contact with the rotating shaft, of the main sealing lip is provided with a spiral groove and a plurality of annular grooves, the spiral groove and the annular grooves are coaxially arranged with the rotating shaft, the annular grooves are arranged close to the sealing side, the spiral groove is arranged close to the atmosphere side, and the spiral direction of the spiral groove is opposite to the rotating direction of the positive rotation of the rotating shaft; the scheme adopts a spring-free structural design, reduces the cost and the holding force of the rubber body to the shaft, obviously improves the wear resistance of the oil seal, prolongs the service life of the oil seal and improves the long-term sealing property; by arranging the annular groove and the spiral groove, a better sealing effect is achieved on a sealing medium, the sealing performance of the oil seal is improved, and a high-speed and bidirectional sealing effect of the oil seal is achieved.
Description
Technical Field
The utility model relates to a sealing device technical field, concretely relates to high-speed wear-resisting oil blanket structure.
Background
An oil seal is a common name of a sealing element, namely a lubricating oil seal, and is a mechanical element for sealing grease (oil is the most common liquid substance in a transmission system and also generally refers to a common liquid substance), and the oil seal is used for isolating a part needing lubrication in a transmission part from a force-applying part so as not to allow lubricating oil to leak, and the sealing element for static sealing and dynamic sealing is called an oil seal.
The existing electric drive bridge is driven by a motor, power is transmitted to the bridge after being reduced by a speed reducer, the position where the speed reducer is connected with the motor is called as an input shaft of the speed reducer, lubricating oil in the speed reducer is sealed in the speed reducer by an oil seal, and the input shaft is directly connected with the motor; the highest rotating speed of the rotating shaft in forward rotation can reach 15000rpm to 20000rpm, and the highest rotating speed of the rotating shaft in reverse rotation can reach 3000 rpm to 4000rpm, so that higher requirements are provided for the use of oil seals; as shown in fig. 5, in the prior art, a general oil seal often suffers from friction when in use, which results in a shortened service life, needs frequent replacement, and cannot realize bidirectional sealing under a high-speed condition, so a new oil seal is urgently needed to be proposed, which satisfies sealing performance when a rotating shaft runs in a high-speed bidirectional mode, and on the premise of realizing sealing, the smaller the self loss of the oil seal is, the better it is.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the prior art problem that oil blanket wearability is poor, the leakproofness is poor, provided a high-speed wear-resisting oil blanket structure, can reduce the power of hugging closely of the rubber body counter shaft, realize low-friction sealed effect, realize high-speed, two-way sealed simultaneously.
The technical scheme of the utility model is that:
a high-speed wear-resisting oil seal structure comprises a framework and a rubber body, wherein the framework is fixedly installed in the rubber body, and the high-speed wear-resisting oil seal structure is characterized in that a main sealing lip which is in contact with the surface of a rotating shaft is arranged on one side, close to the rotating shaft, of the rubber body, and the main sealing lip is connected with the rubber body through a sealing waist; the end face, which is in contact with the rotating shaft, of the main sealing lip is provided with a spiral groove and a plurality of annular grooves, the spiral groove and the annular grooves are coaxially arranged with the rotating shaft, the annular grooves are arranged close to the sealing side, the spiral groove is arranged close to the atmosphere side, and the spiral direction of the spiral groove is opposite to the rotating direction of the rotating shaft in positive rotation.
Preferably, still be provided with vice seal lip on the rubber body, vice seal lip is located between main seal lip and the atmosphere side, just vice seal lip and pivot surface contact and interference fit.
Preferably, the main sealing lip is arranged obliquely from the atmosphere side to the sealing side, and the main sealing lip is inclined inward by 30-60 degrees from the atmosphere side to the sealing side.
Preferably, the main sealing lip, the auxiliary sealing lip and the sealing waist part are made of rubber materials.
The utility model has the advantages that:
the utility model provides a high-speed wear-resisting oil seal structure adopts the design of springless structure, reduces the holding force of the rubber body to the shaft while reducing the cost, obviously improves the wear resistance of the oil seal, prolongs the service life of the oil seal, and improves the long-term sealing property; by arranging the annular groove and the spiral groove, a better sealing effect is achieved on sealing media, the sealing performance of the oil seal is improved, and the high-speed and bidirectional sealing effect of the oil seal is realized.
Drawings
FIG. 1 is a schematic sectional view of a high-speed wear-resistant oil seal structure provided by the present invention;
FIG. 2 is an enlarged view of the portion A in FIG. 1;
FIG. 3 is a schematic view of the top view structure of the annular groove and the spiral groove provided by the present invention;
FIG. 4 is a schematic view of the assembly and usage of the present invention;
FIG. 5 is a schematic view of an assembly and usage of a conventional oil seal;
in the figure, 1, skeleton; 2. a rubber body; 3. a primary seal lip; 301. an annular groove; 302. a helical groove; 4. a secondary sealing lip; 5. And sealing the waist.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer, the present invention is further explained with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of, and do not limit, the invention.
It is to be understood that the terms "horizontal, vertical, top, bottom, two sides," and the like, are used in an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used merely for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 4, the utility model provides a high-speed wear-resistant oil seal structure, which comprises a framework 1 and a rubber body 2, wherein the framework 1 is completely wrapped in the rubber body 2, and the framework 1 is fixedly bonded with the rubber body 2; a main sealing lip 3 is arranged on one side of the rubber body 2 close to the rotating shaft, the main sealing lip 3 is in contact with the surface of the rotating shaft, and the rotating shaft is sealed through the main sealing lip 3 to prevent lubricating media from leaking; in addition, the main sealing lip 3 is fixedly connected with the rubber body 2 through the sealing waist part 5, and the installation of a spring in an oil seal is avoided by arranging the sealing waist part 5, so that the holding force of the main sealing lip on the rotating shaft is reduced, the friction loss between the main sealing lip 3 and the rotating shaft is reduced, and the high-speed low-friction sealing effect is realized; in addition, a spiral groove 302 and a plurality of annular grooves 301 which are coaxial with the rotating shaft are arranged on the end face, which is in contact with the rotating shaft, of the main sealing lip 3, wherein the annular grooves 301 are arranged close to the sealing side of the oil seal, the spiral groove 302 is arranged close to the atmosphere side of the oil seal, and the spiral direction of the spiral groove 302 is opposite to the direction when the rotating shaft rotates forwards; in a specific embodiment, the number of the annular grooves 301 is 2-3, and the annular grooves 301 are distributed at equal intervals; the spiral groove 302 is in a conical spring structure, and the number of the turns of the spiral groove 302 is 7-8; by arranging the annular groove 301, sealing can be performed when the rotating shaft runs at a low speed, and sealing in a low-custom and reverse direction of the rotating shaft is realized; when the speed of the rotating shaft is increased, the annular groove 301 on the main sealing lip 3 can gradually not seal the rotating shaft, at the moment, the medium on the sealing side can cross the annular groove 301 and enter the spiral groove 302, and because the rotating direction of the spiral groove 302 is opposite to the forward rotating direction of the rotating shaft, after the medium enters the spiral groove 302, the medium entering the spiral groove 302 is thrown back to the sealing side through the relative rotation between the spiral groove 302 and the rotating shaft, and further, the sealing of the rotating shaft in a high-speed running state is realized; it should be noted that the number of the annular grooves 301, the number of the turns of the spiral groove 302 and the inclination angle of the spiral are adjusted according to the actual use condition of the rotating shaft, so that the oil seal can achieve a better sealing effect on the rotating shaft.
Referring to fig. 1 and 4, in a specific embodiment of the present invention, the rubber body 2 is further provided with an auxiliary seal lip 4, the auxiliary seal lip 4 is located between the main seal lip 3 and the atmosphere side, and the auxiliary seal lip 4 is contacted with the surface of the rotating shaft in a laminating manner, and by setting the auxiliary seal lip 4, the dustproof and waterproof effect is exerted on the main seal lip 3, thereby avoiding the influence of dust vapor on the connection relationship between the main seal lip 3 and the rotating shaft after contacting the main seal lip 3, and further preventing the leakage of the medium on the seal side.
Further, as shown in fig. 1, the main seal lip 3 is inclined from the atmosphere side to the seal side, and the main seal lip 3 is inclined from the atmosphere side to the seal side by 30 ° -60 °, in the embodiment of the present invention, the inclination angle of the main seal lip 3 is 45 °, and the main seal lip 3 is inclined to be better closely attached to the rotating shaft, so as to prevent the medium leakage from the seal side.
Further, in an embodiment of the present invention, the main seal lip 3, the auxiliary seal lip 4 and the seal waist portion 5 are made of rubber, and the structural form of the pure rubber material is adopted, so that the holding force of the whole main seal lip 3 on the rotating shaft is reduced.
The foregoing description of the specific embodiments of the present invention has been presented for the purposes of illustration and description and is not intended to limit the invention to the precise form disclosed, and it is apparent that numerous changes and modifications may be made in the foregoing description, the examples having been selected and described to illustrate the specific principles and practical application of the invention, to thereby enable one skilled in the art to make and use the invention in various embodiments and with various modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. A high-speed wear-resistant oil seal structure comprises a framework (1) and a rubber body (2), wherein the framework (1) is fixedly installed in the rubber body (2), and is characterized in that a main sealing lip (3) which is in contact with the surface of a rotating shaft is arranged on one side, close to the rotating shaft, of the rubber body (2), and the main sealing lip (3) is connected with the rubber body (2) through a sealing waist (5); set up spiral groove (302) and a plurality of ring channel (301) with the coaxial setting of pivot on the terminal surface that contacts with the pivot on main seal lip (3), ring channel (301) are close to the sealed side and set up, spiral groove (302) are close to the atmosphere side and set up, and the spiral direction of spiral groove (302) sets up with the rotation direction of pivot corotation is opposite.
2. The high-speed wear-resistant oil seal structure according to claim 1, wherein an auxiliary sealing lip (4) is further arranged on the rubber body (2), the auxiliary sealing lip (4) is located between the main sealing lip (3) and the atmosphere side, and the auxiliary sealing lip (4) is in contact with the surface of the rotating shaft.
3. A high-speed wear-resistant oil seal structure according to claim 1, wherein the main seal lip (3) is inclined from the atmosphere side to the sealing side, and the main seal lip (3) is inclined inwardly by 30 ° to 60 ° from the atmosphere side to the sealing side.
4. A high-speed wear-resistant oil seal structure according to claim 1, wherein the primary seal lip (3), the secondary seal lip (4) and the seal waist portion (5) are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221965456.8U CN217977360U (en) | 2022-07-28 | 2022-07-28 | High-speed wear-resisting oil seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221965456.8U CN217977360U (en) | 2022-07-28 | 2022-07-28 | High-speed wear-resisting oil seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217977360U true CN217977360U (en) | 2022-12-06 |
Family
ID=84281271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221965456.8U Active CN217977360U (en) | 2022-07-28 | 2022-07-28 | High-speed wear-resisting oil seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217977360U (en) |
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2022
- 2022-07-28 CN CN202221965456.8U patent/CN217977360U/en active Active
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