CN214788622U - Bearing sealing structure and six-lip sealing double-row angular contact ball bearing - Google Patents
Bearing sealing structure and six-lip sealing double-row angular contact ball bearing Download PDFInfo
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- CN214788622U CN214788622U CN202121097095.5U CN202121097095U CN214788622U CN 214788622 U CN214788622 U CN 214788622U CN 202121097095 U CN202121097095 U CN 202121097095U CN 214788622 U CN214788622 U CN 214788622U
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Abstract
The utility model provides a bearing sealing structure and a six-lip sealing double-row angular contact ball bearing, wherein the bearing is sealed by adopting the bearing sealing structure and comprises an annular inner sealing ring, the inner sealing ring comprises a dust cover I and a rubber base body I attached to the inner side of the dust cover I; the outer diameter end face of the rubber base body I extends outwards to form three annular sealing lips I which are arranged at intervals, and the sealing lips I are in interference fit with the inner diameter of the bearing outer ring; the outer sealing ring is annular and arranged on the outer side of the inner sealing ring; the outer sealing ring comprises a dust cover II and a rubber base body II attached to the inner side of the dust cover II; the inner diameter end face of the rubber substrate II extends inwards to form three annular sealing lips II which are arranged at intervals; and the sealing lip II is in interference fit with the outer diameter of the bearing inner ring. The utility model discloses a six lip sealed bearing, dustproof, waterproof, gas-tight, leak protection fat bearing have and prevent that the bearing from becoming invalid early, improve the effect in bearing life-span.
Description
Technical Field
The utility model belongs to the technical field of the bearing, concretely relates to bearing seal structure and six lip seal double row angular contact ball bearings.
Background
The no-tillage precision planter is a novel planter developed for adapting to high-speed no-tillage planting and medium horsepower wheeled tractor matching in China, the planter can complete combined operation such as side deep fertilization, ditching and seeding, earthing and pressing once in an unearthed plot, a plurality of important parts of the planter adopt double-row angular contact ball bearing bearings, the original bearing sealing cover basically uses a flat plate type dust cover, the structure of the dust cover is easy to deform and damage, the working condition of the agricultural machinery is very poor, the sealing effect of the agricultural machinery is very poor, the service life of the bearing is directly influenced, the working condition of the agricultural machinery is very poor, and the bearing is often failed in early stage due to the fact that dust and water gas enter the sealing problem.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, a bearing sealing structure and a six-lip sealing double-row angular contact ball bearing are provided so as to achieve the purposes of dust prevention, water prevention, gas prevention and grease leakage prevention for agricultural machinery.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a bearing seal structure, include:
the inner sealing ring is annular and comprises a dustproof cover I and a rubber base body I which is attached to the inner side of the dustproof cover I and is coaxially arranged; the outer diameter end face of the rubber base body I extends outwards to form three annular sealing lips I which are arranged at intervals, and the sealing lips I are in interference fit with the inner diameter of the bearing outer ring;
the outer sealing ring is annular and arranged on the outer side of the inner sealing ring; the outer sealing ring comprises a dust cover II and a rubber base body II which is attached to the inner side of the dust cover II and is coaxially arranged; the inner diameter end face of the rubber substrate II extends inwards to form three annular sealing lips II which are arranged at intervals; and the sealing lip II is in interference fit with the outer diameter of the bearing inner ring.
Furthermore, the middle part of the dust cover I is recessed inwards to form a groove.
Furthermore, the outer diameter of the sealing lip I is larger than that of the dust cover I; the inner diameter of the dustproof cover I is smaller than that of the rubber base body I.
Furthermore, the dustproof cover II is internally provided with an accommodating cavity; rubber substrate II sets up and links to each other in this holds the chamber and with shield II inner wall.
Furthermore, the end part of the dustproof cover II is provided with a bent flanging.
Furthermore, the inner diameter of the sealing lip II is smaller than that of the dust cover II.
The utility model also provides a six lip seals double row angular contact ball bearing, including bearing inner circle and bearing inner race, be equipped with the rolling element between bearing inner circle and the bearing inner race, the rolling element outside is provided with foretell bearing seal structure.
Furthermore, the bearing outer ring is provided with a knurled clamping groove for fixing the outer sealing ring.
Furthermore, a stepped shaft-shaped positioning table is formed at the end part of the bearing inner ring in a recessed manner, and the dust cover I is sleeved and clamped on the surface of the positioning table; and the sealing lip II is in interference fit with the outer diameter surface of the positioning table.
Furthermore, the end face of the shaft shoulder of the positioning table is provided with an inclination angle.
Compared with the prior art, the beneficial effects of the utility model are that:
the device adopts contact 6-lip sealing, the inner layer is a four-layer three-lip two-groove inner sealing ring, the outer layer also adopts a four-layer three-lip two-groove outer sealing ring, and three sealing lips I of the inner layer are in interference fit with an inner flange of a bearing outer ring, so that the effects of storing grease, preventing grease from overflowing and buffering pressure are achieved; outer three seal lip II is interference fit with the bearing inner race external diameter, can effectually play dustproof like this, water-proof, vapour proof performance, the work raceway that has prevented harmful impurity entering bearing, the rubber substrate that interior sealing washer and outer seal ring adopted is imported rubber, can prevent the temperature rise, reduce friction torque, the effectual entering that prevents dust and water, seal lip I and seal lip II are high temperature, low temperature, high-speed, when low-speed and bearing load change, homoenergetic are steadily with the contact point contact of inner circle sealing, great improvement sealed effect.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an inner seal ring.
Fig. 2 is a schematic diagram of an outer sealing ring structure.
Fig. 3 is a schematic structural diagram of a double-row angular contact ball bearing.
Fig. 4 is a knurled groove view.
Fig. 5 is a schematic view of the positioning table.
Description of reference numerals:
1, a dust cover I; 2, a rubber matrix I; 3, sealing lip I; 4, grooves; 5, a dust cover II; 6 an accommodating cavity; 7, a rubber matrix II; 8 sealing lip II; 9, flanging; 10 bearing inner ring; 11 bearing outer rings; 12 rolling bodies; 13 knurling clamping groove; 14 positioning the table.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1-2, the present embodiment provides a bearing seal structure, including:
the inner sealing ring is annular and comprises a dust cover I1 and a rubber substrate I2 which is attached to the inner side of the dust cover I1 and is coaxially arranged; the outer diameter end face of the rubber substrate I2 extends outwards to form three annular sealing lips I3 which are arranged at intervals, the sealing lips I3 are in interference fit with the inner diameter of the bearing outer ring 11, and the interference magnitude is 0.4-0.6; the three layers of the inner sealing ring positioned at the inner layer form A, B two cavities, so that grease in the bearing is prevented from overflowing at A, B through gaps and then is stored in the two cavities, the grease stored in the two cavities can lead the lip part of the sealing lip I3 to droop, the gaps between the three lips are smaller and smaller, and the grease is effectively prevented from leaking continuously.
The outer sealing ring is arranged on the outer side of the inner sealing ring; the outer sealing ring comprises a dust cover II5 and a rubber matrix II7 which is attached to the inner side of the dust cover II5 and is coaxially arranged; the inner diameter end face of the rubber base body II7 is inwards extended with three annular sealing lips II8 which are arranged at intervals; the sealing lip II8 is in interference fit with the outer diameter of the bearing inner ring 10, and the interference magnitude is 0.4-0.6. The outer three lips of the outer sealing ring positioned on the outer layer form C, D two cavities from inside to outside, dust enters the bearing through a gap and then enters the cavities, the cavities are similar to closed spaces, the D, C cavities form a front part and a back part from outside to inside, when outside dust enters, large dust is completely blocked outside the outer sealing ring, and tiny dust enters the D cavity, and a part of the tiny dust enters the C cavity, so that the C cavity completely and effectively prevents the tiny dust from entering the bearing chamber.
Because we adopt contact type sealing at phi a and phi b, the six-lip contact rubber part can also effectively absorb a part of vibration noise in the bearing.
The design ensures that the six contact lips can be stably contacted with the inner ring sealing contact point at high temperature, low temperature, high speed, low speed and bearing load change.
The inner sealing ring and the outer sealing ring are both in a structural form of three-lip rubber seal (rubber base) and a layer of iron seal (dustproof cover), a fixed connection mode can be adopted, and the iron seal plays a role in fixing rubber; the rubber base I2 and the rubber base II7 are made of oil-resistant nitrile rubber, and the iron seal is made of 10# steel plates.
The middle part of the dust cover I1 is sunken inwards to form a groove, so that the structural strength is improved, and the problems that the conventional flat plate type dust cover is easy to deform and damage can be solved.
The outer diameter of the sealing lip I3 is larger than that of the dust cover I1, and the outer diameter end face of the dust cover I1 and the inner surface of the bearing outer ring 11 are in non-contact design; the inner diameter of the dust cover I1 is smaller than that of the rubber base body I2, namely the diameter of a central through cavity of the rubber base body I2 is larger than that of a central through cavity of the dust cover I1; the end face of the rubber base body I2 where the inner diameter is located and the outer diameter surface of the bearing inner ring 10 adopt non-contact type.
The dust cover II5 is internally provided with a containing cavity; the rubber base II7 is arranged in the accommodating cavity and is connected with the inner wall of the dust cover II 5.
The end of the dust cover II5 is provided with a bent flanging 9, and the structural form of the flanging 9 includes, but is not limited to, a circular arc.
The inner diameter of the sealing lip II8 is smaller than that of the dust cap II5, so that the end face of the inner diameter of the dust cap II5 is in a non-contact design with the outer surface of the bearing inner ring 10.
As shown in fig. 3-5, the present embodiment further provides a novel dustproof, waterproof, air-proof, grease-proof double-row angular contact ball bearing with six-lip sealing, which includes a bearing inner ring 10 and a bearing outer ring 11, a rolling body 12 is disposed between the bearing inner ring 10 and the bearing outer ring 11, and the above-mentioned bearing sealing structure is disposed outside the rolling body 12 for sealing.
The knurling draw-in groove 13 that is used for fixed outer seal ring is seted up to bearing inner race 11, and knurling draw-in groove 13 is 45 knurling notches, establishes in knurling draw-in groove 13 through flanging 9 card, has played the effect of fixed outer seal ring, can also prevent that dust etc. from getting into inside from the external pressure mouth. Dust cover II5 is fixed in bearing inner race 11's knurling draw-in groove 13, prevents that great granule dust from getting into.
A stepped shaft-shaped positioning table 14 is formed at the end part of the bearing inner ring 10 in a recessed manner, and a dust cover I1 is sleeved and clamped on the surface of the positioning table 14; the sealing lip II8 is in interference fit with the outer diameter surface of the positioning table 14, the interference magnitude is 0.4-0.6, harmful substances are prevented in the two cavities, grease accumulated in the cavities can lead the lip part of the sealing ring to droop, and the grease is effectively prevented from continuously leaking.
The end face of the shaft shoulder of the positioning table 14 is provided with an inclination angle, and the end face of the step is designed to be an inclination angle of 3 degrees so as to reduce friction between the inner sealing ring and the end face during rotation. To sum up, the utility model discloses a six lip sealed bearing, dustproof, waterproof, gas-tight, leak protection fat bearing have and prevent that the bearing from becoming invalid early, improve the effect in bearing life-span.
The device adopts contact 6-lip sealing, the inner layer is a four-layer three-lip two-groove inner sealing ring, the outer layer also adopts a four-layer three-lip two-groove outer sealing ring, and the three sealing lips I3 of the inner layer are in interference fit with the inner flange of the bearing outer ring 11, so that the effects of storing grease, preventing grease from overflowing and buffering pressure are achieved; outer three seal lip II8, it is interference fit with bearing inner race 10 external diameter, can effectually play dustproof like this, waterproof, vapour proof performance, the work raceway that has prevented harmful impurity entering bearing, the rubber substrate that interior sealing washer and external seal circle adopted is imported rubber, can prevent the temperature rise, reduce friction torque, the effectual entering that prevents dust and water, seal lip I3 and seal lip II8 are high temperature, low temperature, high speed, when low-speed and bearing load change, homoenergetic stably with the contact point contact of inner circle sealing, great improvement sealed effect.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A bearing seal structure, comprising:
the inner sealing ring is annular and comprises a dustproof cover I and a rubber base body I which is attached to the inner side of the dustproof cover I and is coaxially arranged; the outer diameter end face of the rubber base body I extends outwards to form three annular sealing lips I which are arranged at intervals, and the sealing lips I are in interference fit with the inner diameter of the bearing outer ring;
the outer sealing ring is annular and arranged on the outer side of the inner sealing ring; the outer sealing ring comprises a dust cover II and a rubber base body II which is attached to the inner side of the dust cover II and is coaxially arranged; the inner diameter end face of the rubber substrate II extends inwards to form three annular sealing lips II which are arranged at intervals; and the sealing lip II is in interference fit with the outer diameter of the bearing inner ring.
2. The bearing seal structure according to claim 1, wherein a groove is formed in the middle of the dust cover I recessed inward.
3. A bearing seal structure according to claim 1, wherein an outer diameter of said seal lip I is larger than an outer diameter of said dust cap I; the inner diameter of the dustproof cover I is smaller than that of the rubber base body I.
4. The bearing seal structure according to claim 1, wherein said dust cover II has a housing cavity therein; rubber substrate II sets up and links to each other in this holds the chamber and with shield II inner wall.
5. The bearing seal structure of claim 1, wherein the dust cover II is provided at its end with a bent flange.
6. A bearing seal structure according to claim 1, wherein said seal lip II has an inner diameter smaller than that of said dust cap II.
7. A six-lip sealed double-row angular contact ball bearing comprises a bearing inner ring and a bearing outer ring, wherein a rolling body is arranged between the bearing inner ring and the bearing outer ring, and the bearing sealing structure is characterized in that the bearing sealing structure as claimed in any one of claims 1 to 6 is arranged on the outer side of the rolling body.
8. The six-lip sealing double-row angular contact ball bearing according to claim 7, wherein a knurled clamping groove for fixing the outer sealing ring is formed in the bearing outer ring.
9. The six-lip sealing double-row angular contact ball bearing according to claim 7, wherein a stepped shaft-shaped positioning table is formed at the end part of the bearing inner ring in a recessed manner, and the dust cover I is clamped on the surface of the positioning table; and the sealing lip II is in interference fit with the outer diameter surface of the positioning table.
10. The double row angular contact ball bearing with six lips and a sealing structure as claimed in claim 9, wherein the end face of the shoulder of the retainer has an inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121097095.5U CN214788622U (en) | 2021-05-21 | 2021-05-21 | Bearing sealing structure and six-lip sealing double-row angular contact ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121097095.5U CN214788622U (en) | 2021-05-21 | 2021-05-21 | Bearing sealing structure and six-lip sealing double-row angular contact ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214788622U true CN214788622U (en) | 2021-11-19 |
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ID=78696563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121097095.5U Active CN214788622U (en) | 2021-05-21 | 2021-05-21 | Bearing sealing structure and six-lip sealing double-row angular contact ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214788622U (en) |
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2021
- 2021-05-21 CN CN202121097095.5U patent/CN214788622U/en active Active
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