CN103629246B - Double sealed bearing - Google Patents
Double sealed bearing Download PDFInfo
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- CN103629246B CN103629246B CN201310447706.8A CN201310447706A CN103629246B CN 103629246 B CN103629246 B CN 103629246B CN 201310447706 A CN201310447706 A CN 201310447706A CN 103629246 B CN103629246 B CN 103629246B
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- ring
- seal ring
- ring portion
- portion seal
- inner ring
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Abstract
The present invention relates to bearing.A kind of double sealed bearing, comprise inner ring, be set in the outer ring on inner ring and the roll piece between inner ring and outer ring, the sealing of described outer ring is connected with outer ring portion seal ring, the inner peripheral surface sealing of described outer ring portion seal ring is connected to described inner ring, described inner ring sealing is connected with inner ring portion seal ring, the outer circumferential face sealing of described inner ring portion seal ring is connected to described outer ring, and described outer ring portion's seal ring and inner ring portion seal ring are positioned at the same side of described roll piece.The invention provides a kind of be not easy to produce poor sealing phenomenon and movable sealing face produce wearing and tearing after the sealing effect double sealed bearing that can not decline fast, solve existing bearing easily produce poor sealing phenomenon and once the movable sealing face of seal ring produce wearing and tearing after the sealing effect problem that can decline fast.
Description
Technical field
The present invention relates to bearing, particularly relate to a kind of double sealed bearing.
Background technique
Bearing in mechanical transmission course, plays parts that are fixing and reduction load friction factor, in order to reduce the mechanical load friction factor of equipment in transmission process.China Patent No. be 2009100504801, authorized announcement date be July 4 in 2012 day, be called a kind of bearing being provided with seal ring of disclosed example in the patent document of " a kind of full type roller bearing ".The basic structure of bearing disclosed in this patent document comprise inner ring, be enclosed within the outer ring on inner ring and the roll piece between inner ring and outer ring.In order to prevent foreign matter from entering the roll piece place place between Internal and external cycle and preventing the lubricant oil in bearing excessive, seal ring can be set between Internal and external cycle.The set-up mode of existing seal ring is as in this patent document, between Internal and external cycle, seal ring is set, the inner and outer circumferential surfaces of seal ring is connected to together with Internal and external cycle sealing respectively, and this kind of setting of seal ring has the following disadvantages: sealing easily produces poor sealing separately; Can decline fast once the movable sealing face of seal ring (being the inner and outer circumferential surfaces of seal ring in documents) produces the rear sealing effect of wearing and tearing.
Summary of the invention
The invention provides a kind of be not easy to produce poor sealing phenomenon and movable sealing face produce wearing and tearing after the sealing effect double sealed bearing that can not decline fast, solve existing bearing easily produce poor sealing phenomenon and once the movable sealing face of seal ring produce wearing and tearing after the sealing effect problem that can decline fast.
Above technical problem is solved by following technical proposal: a kind of double sealed bearing, comprise inner ring, be set in the outer ring on inner ring and the roll piece between inner ring and outer ring, the sealing of described outer ring is connected with outer ring portion seal ring, the inner peripheral surface sealing of described outer ring portion seal ring is connected to described inner ring, described inner ring sealing is connected with inner ring portion seal ring, the outer circumferential face sealing of described inner ring portion seal ring is connected to described outer ring, and described outer ring portion's seal ring and inner ring portion seal ring are positioned at the same side of described roll piece.A side face due to seal ring is the affixed connection of sealing, another side face is sealing abutting, the side face that therefore only can abut in sealing in using process produces wearing and tearing and occurs poor sealing phenomenon, but seal ring devises twice, the side face that the sealing of two seals ring abuts is contrary, therefore put-through channel can not be produced after making the movable sealing face of seal ring produce wearing and tearing, even if thus play not only to improve sealing effect but also produce movable sealing surface wear sealing effect also can not be caused to decline fast.
As preferably, the outer circumferential face of described inner ring portion seal ring is provided with sealing lip in inner ring portion seal ring outer seal lip and inner ring portion seal ring, the radial outer end of described inner ring portion seal ring outer seal lip axially tilts to the direction away from described roll piece along inner ring, in described inner ring portion seal ring, the radial outer end of sealing lip axially tilts to the direction at described Sealing place along inner ring, forms inner ring portion seal ring oil storage tank in described inner ring portion seal ring outer seal lip and inner ring portion seal ring between sealing lip.Can to reduce when inner ring portion seal ring uses with the wearing and tearing produced between outer ring, play the effect increased the service life.When foreign matter pass axially through inner ring portion seal ring enter people's Bearing inner time, inner ring portion seal ring outer seal lip can be increased and be connected to power on outer ring, thus improve sealing effect, make foreign matter be not easy to enter; When the grease of Bearing inner passes axially through inner ring portion seal ring outflow Bearing inner, sealing lip in inner ring portion seal ring can be increased and be connected to the power on outer ring, thus improve sealing effect, make oil be not easy to flow out.The formation of oil storage tank, can oil storage and reduce friction between inner ring portion seal ring and outer ring to delay friction, thus play the effect increased the service life, moreover in the process of bearing rotation, oil in oil storage tank can produce centrifugal action and play the effect of liquid sealing, thus improves the dynamic sealing effect of bearing.
As preferably, described outer ring portion seal ring is between described inner ring portion seal ring and roll piece.Mainly need to prevent foreign matter from entering bearing due to during sealing, this design makes only to need on inner ring portion seal ring, adopt above-mentioned optimizing structure can reach good sealing effect.
As preferably, the inner peripheral surface of described outer ring portion seal ring is provided with sealing lip in outer ring portion seal ring outer seal lip and outer ring portion seal ring, the radial inner end of described outer ring portion seal ring outer seal lip axially tilts to the direction away from described roll piece along outer ring, in described outer ring portion seal ring, the direction of radial inner end along outer ring axially to described roll piece place of sealing lip tilts, and forms outer ring portion seal ring oil storage tank in described outer ring portion seal ring outer seal lip and outer ring portion seal ring between sealing lip.The sealing effect between outer ring portion seal ring and inner ring can be improved.
As preferably, described outer ring portion's seal ring and described outer ring elastic packing are connected together, seal ring one end along outer ring axially away from described roll piece in described outer ring portion is provided with outer ring portion seal ring handle, described inner ring portion seal ring and described inner ring elastic packing are connected together, and described inner ring portion seal ring is axially provided with inner ring portion seal ring handle away from one end of described roll piece along inner ring.Convenience when changing seal ring is good.
As preferably, described outer ring portion seal ring handle and inner ring portion seal ring shake hands to be all loop configuration.Because the space between inner ring and outer ring is narrow, be designed to annular and be convenient to the instrument by having eave tile or point connect with handle, convenience during use is good.
As preferably, described inner ring, inner ring portion seal ring, outer ring and outer ring portion seal ring surround vacuum every chamber of making an uproar.Because vacuum is every the setting in chamber of making an uproar, the noise produced when using process middle (center) bearing roll piece is rolled is not easy unofficial biography, reduces the noise in bearing working process.Support one another between two seals ring and produce every the effect of making an uproar, making seal ring not only play seal action and also play every the effect of making an uproar.
As preferably, described vacuum is provided with exhaust passage every chamber of making an uproar, and described exhaust passage is provided with the one-way valve opened every outside, chamber of making an uproar towards described vacuum, and described exhaust passage comprises channel body and suction port.Convenient when inside, chamber of making an uproar forms vacuum in vacuum.
As preferably, described suction port is positioned at described vacuum every the radial outer end in chamber of making an uproar and towards the axis of vacuum every chamber of making an uproar.When in bearing rotation process especially in high speed rotating process and Bearing inner temperature rise after (when working procedure middle (center) bearing temperature can rise, bearing is used in hot environment, the temperature of inside might as well rise more), the gas of vacuum in chamber of making an uproar can expand and discharge, make vacuum thinner every the air in chamber of making an uproar, thus play the effect dynamically improved every effect of making an uproar, and the rarefaction of air degree of vacuum in chamber of making an uproar can remain on historical low value.
As preferably, described exhaust passage body is arranged in the one that described in both described outer ring portion's seal ring and inner ring portion seal ring middle distance, roll piece is far away.Convenience when making sealing channel is good.
The present invention has following advantage: by the same side of roll piece, two seals ring is set and two seals ring respectively with inner ring and outer ring affixed, thus can sealing effect be improved, especially the bad quick decline of sealing effect after movable sealing face produces wearing and tearing; Seal ring is abutted by side face and seals, convenient during making Internal and external cycle.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of embodiment one when creating wearing and tearing.
Fig. 3 is the structural representation of the embodiment of the present invention two.
Fig. 4 is the structural representation of the embodiment of the present invention three.
Fig. 5 is the structural representation of the embodiment of the present invention four.
Fig. 6 is the close-up schematic view at the A place of Fig. 5.
In figure: inner ring 1, outer ring 2, roll piece 3, inner ring portion seal ring 4, inner ring portion seal ring outer seal lip 41, sealing lip 42 in inner ring portion seal ring, inner ring portion seal ring oil storage tank 43, inner ring portion seal ring handle 44, projection 45, outer ring portion seal ring 5, outer ring portion seal ring outer seal lip 51, sealing lip 52 in outer ring portion seal ring, outer ring portion seal ring oil storage tank 53, outer ring portion seal ring handle 54, first wearing and tearing gap 6, second wearing and tearing gap 7, vacuum is every chamber 8 of making an uproar, exhaust passage 81, channel body 811, suction port 812, one-way valve 82, vacuum is every the axis L in chamber of making an uproar.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, and see Fig. 1, a kind of double sealed bearing, comprises inner ring 1, is set in the outer ring 2 on inner ring and the roll piece between inner ring and outer ring 3.Roll piece 3 is spin, needle roller and roller etc., the particular type that the optical axis holds and determining.
Inner ring 1 is provided with inner ring portion seal ring 4.Inner ring portion seal ring 4 is fixed together by the mode of bonding and inner ring 1 sealing.The outer circumferential face sealing of inner ring portion seal ring 4 is connected on the inner peripheral surface of outer ring 2.
Outer ring 2 is provided with outer ring portion seal ring 5.Outer ring portion seal ring 5 is fixed together by the mode of bonding and outer ring 2 sealing.The inner peripheral surface sealing of outer ring portion seal ring 5 is connected on the outer circumferential face of inner ring 1.
Outer ring portion seal ring 5 and inner ring portion seal ring 4 are positioned at the same side of roll piece 3.Inner ring portion seal ring 4 is between outer ring portion seal ring 5 and roll piece 3.
In bearing rotation process, between inner ring portion seal ring 4 and inner ring 1, keep relative position constant, relatively rotate between inner ring portion seal ring 4 and outer ring 2.Relatively rotate between outer ring portion seal ring 5 and inner ring 1, between outer ring portion seal ring 5 and outer ring 2, keep relative position constant.
See Fig. 2, this design makes produce wearing and tearing when all movable sealing faces and form wearing and tearing gap, namely the movable sealing face (i.e. outer circumferential face) of inner ring portion seal ring 4 wear and tear generation first wear and tear the movable sealing face (i.e. inner peripheral surface) of gap 6 and outer ring portion seal ring 5 wear and tear generation second wear and tear gap 7 time, first wearing and tearing gap 6 and second wearing and tearing both gaps 7 are the radial two ends of passage between Internal and external cycle, also be there is radial distance difference between the wearing and tearing gap on two seals ring, thus the seriousness making the upside of bearing and outside produce poor sealing than existing separately or the good sealing effect of two pass, especially when Bearing inner is lubricated by lubricating grease.Note: the sealing of bearing does not need to reach hermetic seal, as long as realize liquid sealing, convection cell carries out sealing.
Embodiment two, and see Fig. 3, the difference with embodiment one is: inner ring 1, inner ring portion seal ring 4, outer ring 2 and outer ring portion seal ring 5 four surround vacuum every chamber 8 of making an uproar.Vacuum is provided with exhaust passage 81 every chamber 8 of making an uproar.Exhaust passage 81 comprises channel body 811 and suction port 812.Channel body 811 is arranged at outer ring portion seal ring 5.Channel body 811 is provided with one-way valve 82.One-way valve 82 opens (namely the gas of vacuum in chamber of making an uproar can only be discharged) towards vacuum every outside, chamber 8 of making an uproar.
Suction port 812 is for being arranged at the circular groove extended along outer ring circumference on the inner peripheral surface of outer ring 2.This setting of suction port can improve convenience when channel body 811 and suction port 812 dock, and convenient when making.
Suction port 812 is also the axis of bearing every the axis L(in chamber of making an uproar towards vacuum).
The forming process of the initial vacuum of vacuum in chamber 8 of making an uproar for: first one (being inner ring portion seal ring 4 in the present embodiment) near for roll piece described in both outer ring portion seal ring and inner ring blow-by ring middle distance to be connected between inner ring and outer ring, then one (being outer ring portion seal ring 5 in the present embodiment) far away for roll piece described in both outer ring portion seal ring and inner ring blow-by ring middle distance to be moved towards roll piece 3 and be assembled between inner ring 1 and outer ring 2, again towards the direction away from roll piece 3 and draw outer ring portion seal ring 5, thus in chamber 8 of making an uproar, form vacuum in vacuum.
Embodiment three, and see Fig. 4, a kind of double sealed bearing, comprises inner ring 1, is set in the outer ring 2 on inner ring and the roll piece between inner ring and outer ring 3.Roll piece 3 is spin, needle roller and roller etc., the particular type that the optical axis holds and determining.
Inner ring 1 is provided with inner ring portion seal ring 4.Inner ring portion seal ring 4 is fixed together by the mode of flexible clamping and inner ring 1 sealing.The outer circumferential face of inner ring portion seal ring 4 is provided with sealing lip 42 in inner ring portion seal ring outer seal lip 41 and inner ring portion seal ring.Namely the radial outer end of inner ring portion seal ring outer seal lip 41 axially outwards tilts away from the direction of roll piece along inner ring.In inner ring portion seal ring, the radial outer end of sealing lip 42 tilts along the direction that inner ring is inwardly axially roll piece place.Inner ring portion seal ring oil storage tank 43 is formed between sealing lip 42 in inner ring portion seal ring outer seal lip 41 and inner ring portion seal ring.In the radial outer end of inner ring portion seal ring outer seal lip 41 and inner ring portion seal ring the radial outer end of sealing lip 42 all seal be connected to outer ring 2 inner peripheral surface on.Namely the axial outer end of inner ring portion seal ring 4 is provided with inner ring portion seal ring handle 44 away from one end of roll piece 3.Inner ring portion seal ring handle 44 is loop configuration.
Outer ring 2 is provided with outer ring portion seal ring 5.Outer ring portion seal ring 5 is fixed together by the mode of flexible clamping and outer ring 2 sealing.The inner peripheral surface of outer ring portion seal ring 5 is provided with sealing lip 52 in outer ring portion seal ring outer seal lip 51 and outer ring portion seal ring.Namely the radial inner end of outer ring portion seal ring outer seal lip 51 axially outwards tilts away from the direction of roll piece along outer ring.In outer ring portion seal ring, the radial inner end of sealing lip 52 is inwardly axially the direction inclination at roll piece place along outer ring.Outer ring portion seal ring oil storage tank 53 is formed between sealing lip 52 in outer ring portion seal ring outer seal lip 51 and outer ring portion seal ring.In the radial inner end of outer ring portion seal ring outer seal lip 51 and outer ring portion seal ring the radial inner end of sealing lip 52 all seal be connected to inner ring 1 outer circumferential face on.Namely the axial outer end of outer ring portion seal ring 5 is provided with outer ring portion seal ring handle 54 away from one end of roll piece 3.Outer ring portion seal ring handle 54 is loop configuration.
Outer ring portion seal ring 5 and inner ring portion seal ring 4 are positioned at the same side of roll piece 3.Outer ring portion seal ring 5 is between inner ring portion seal ring 4 and roll piece 3.
Embodiment four, and see Fig. 5, the difference with embodiment three is: inner ring 1, inner ring portion seal ring 4, outer ring 2 and outer ring portion seal ring 5 four surround vacuum every chamber 8 of making an uproar.
See Fig. 6.Vacuum is provided with exhaust passage 81 every chamber 8 of making an uproar.Exhaust passage 81 comprises channel body 811 and suction port 812.Channel body 811 is arranged at inner ring portion seal ring 4.Channel body 811 is provided with one-way valve 82.One-way valve 82 is opened towards vacuum every outside, chamber 8 of making an uproar.The axial inner ends of inner ring portion seal ring 4 is provided with and extends to the projection 45 of vacuum in chamber 8 of making an uproar.Suction port 812 is arranged on projection 45.Suction port 812 towards vacuum every the axis L(in chamber of making an uproar see Fig. 5) axis of also i.e. bearing.Suction port 812 is positioned at the radial outer end of vacuum every chamber 8 of making an uproar.
See Fig. 5, the forming process of the initial vacuum of vacuum in chamber 8 of making an uproar for: first one (being outer ring portion seal ring 5 in the present embodiment) near for roll piece described in both outer ring portion seal ring and inner ring blow-by ring middle distance is connected between inner ring and outer ring, then one (being inner ring portion seal ring 4 in the present embodiment) far away for roll piece described in both outer ring portion seal ring and inner ring blow-by ring middle distance is moved towards roll piece 3 and is assembled between inner ring 1 and outer ring 2, inner ring portion seal ring 4 is drawn again towards the direction away from roll piece 3, thus in chamber 8 of making an uproar, form vacuum in vacuum.
Claims (9)
1. a double sealed bearing, comprise inner ring, be set in the outer ring on inner ring, and the roll piece between inner ring and outer ring, it is characterized in that, the sealing of described outer ring is connected with outer ring portion seal ring, the inner peripheral surface sealing of described outer ring portion seal ring is connected to described inner ring, described inner ring sealing is connected with inner ring portion seal ring, the outer circumferential face sealing of described inner ring portion seal ring is connected to described outer ring, described outer ring portion's seal ring and inner ring portion seal ring are positioned at the same side of described roll piece, the outer circumferential face of described inner ring portion seal ring is provided with sealing lip in inner ring portion seal ring outer seal lip and inner ring portion seal ring, the radial outer end of described inner ring portion seal ring outer seal lip axially tilts to the direction away from described roll piece along inner ring, in described inner ring portion seal ring, the radial outer end of sealing lip axially tilts to the direction at described Sealing place along inner ring, inner ring portion seal ring oil storage tank is formed between sealing lip in described inner ring portion seal ring outer seal lip and inner ring portion seal ring.
2. double sealed bearing according to claim 1, is characterized in that, described outer ring portion seal ring is between described inner ring portion seal ring and roll piece.
3. double sealed bearing according to claim 1 and 2, it is characterized in that, the inner peripheral surface of described outer ring portion seal ring is provided with sealing lip in outer ring portion seal ring outer seal lip and outer ring portion seal ring, the radial inner end of described outer ring portion seal ring outer seal lip axially tilts to the direction away from described roll piece along outer ring, in described outer ring portion seal ring, the direction of radial inner end along outer ring axially to described roll piece place of sealing lip tilts, and forms outer ring portion seal ring oil storage tank in described outer ring portion seal ring outer seal lip and outer ring portion seal ring between sealing lip.
4. double sealed bearing according to claim 1 and 2, it is characterized in that, described outer ring portion's seal ring and described outer ring elastic packing are connected together, seal ring one end along outer ring axially away from described roll piece in described outer ring portion is provided with outer ring portion seal ring handle, described inner ring portion seal ring and described inner ring elastic packing are connected together, and described inner ring portion seal ring is axially provided with inner ring portion seal ring handle away from one end of described roll piece along inner ring.
5. double sealed bearing according to claim 4, is characterized in that, described outer ring portion seal ring handle and inner ring portion seal ring handle are all loop configuration.
6. double sealed bearing according to claim 1 and 2, is characterized in that, described inner ring, inner ring portion seal ring, outer ring and outer ring portion seal ring surround vacuum every chamber of making an uproar.
7. double sealed bearing according to claim 6, is characterized in that, described vacuum is provided with exhaust passage every chamber of making an uproar, and described exhaust passage is provided with the one-way valve opened every outside, chamber of making an uproar towards described vacuum, and described exhaust passage comprises channel body and suction port.
8. double sealed bearing according to claim 7, is characterized in that, described suction port is positioned at described vacuum every the radial outer end in chamber of making an uproar and towards the axis of vacuum every chamber of making an uproar.
9. double sealed bearing according to claim 7, is characterized in that, described exhaust passage body is arranged in the one that described in both described outer ring portion's seal ring and inner ring portion seal ring middle distance, roll piece is far away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447706.8A CN103629246B (en) | 2013-09-27 | 2013-09-27 | Double sealed bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310447706.8A CN103629246B (en) | 2013-09-27 | 2013-09-27 | Double sealed bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629246A CN103629246A (en) | 2014-03-12 |
| CN103629246B true CN103629246B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310447706.8A Active CN103629246B (en) | 2013-09-27 | 2013-09-27 | Double sealed bearing |
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| CN (1) | CN103629246B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725610B (en) * | 2017-10-12 | 2019-05-31 | 洛阳轴承研究所有限公司 | A kind of sealing ring and the bearing using the sealing ring |
| CN113483018B (en) * | 2021-08-17 | 2023-05-05 | 洛阳轴承研究所有限公司 | Joint bearing and shield tunneling machine using same |
| CN116123211B (en) * | 2023-02-22 | 2023-08-01 | 南京林业大学 | High-speed rolling bearing with self-adaptive sealing and reinforced cooling structure |
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| JP2008002487A (en) * | 2006-06-20 | 2008-01-10 | Nsk Ltd | Bearing with seal |
| JP2009197969A (en) * | 2008-02-25 | 2009-09-03 | Jtekt Corp | Sealing device for rolling bearing |
| CN201575047U (en) * | 2009-11-02 | 2010-09-08 | 浙江八环轴承有限公司 | Double-sealed bearing |
| CN201991930U (en) * | 2011-03-26 | 2011-09-28 | 芜湖人本轴承有限公司 | Transmission shaft support bearing |
| CN202215610U (en) * | 2011-08-26 | 2012-05-09 | 人本集团有限公司 | Novel deep groove ball bearing for guiding steel rolling wire |
| JP5016123B2 (en) * | 2011-05-06 | 2012-09-05 | Ｎｔｎ株式会社 | Rolling bearing |
| CN203570852U (en) * | 2013-09-27 | 2014-04-30 | 浙江蓝翔轴承有限公司 | Double-channel seal type bearing |
-
2013
- 2013-09-27 CN CN201310447706.8A patent/CN103629246B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008002487A (en) * | 2006-06-20 | 2008-01-10 | Nsk Ltd | Bearing with seal |
| JP2009197969A (en) * | 2008-02-25 | 2009-09-03 | Jtekt Corp | Sealing device for rolling bearing |
| CN201575047U (en) * | 2009-11-02 | 2010-09-08 | 浙江八环轴承有限公司 | Double-sealed bearing |
| CN201991930U (en) * | 2011-03-26 | 2011-09-28 | 芜湖人本轴承有限公司 | Transmission shaft support bearing |
| JP5016123B2 (en) * | 2011-05-06 | 2012-09-05 | Ｎｔｎ株式会社 | Rolling bearing |
| CN202215610U (en) * | 2011-08-26 | 2012-05-09 | 人本集团有限公司 | Novel deep groove ball bearing for guiding steel rolling wire |
| CN203570852U (en) * | 2013-09-27 | 2014-04-30 | 浙江蓝翔轴承有限公司 | Double-channel seal type bearing |
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| CN103629246A (en) | 2014-03-12 |
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