CN113531123A - Bearing seal with support finger spring - Google Patents
Bearing seal with support finger spring Download PDFInfo
- Publication number
- CN113531123A CN113531123A CN202110907490.3A CN202110907490A CN113531123A CN 113531123 A CN113531123 A CN 113531123A CN 202110907490 A CN202110907490 A CN 202110907490A CN 113531123 A CN113531123 A CN 113531123A
- Authority
- CN
- China
- Prior art keywords
- rubber
- seal
- spring
- waist
- support finger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 57
- 238000004073 vulcanization Methods 0.000 claims abstract description 8
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000013040 rubber vulcanization Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009191 jumping Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a bearing sealing element with a supporting finger spring, which comprises a supporting framework and a rubber sealing element, wherein the supporting finger spring is arranged on the inner side surface of the rubber sealing element, the rubber sealing element comprises a rubber connecting part and a rubber waist part, the outer side end of the rubber connecting part is connected with the supporting framework, the bottom of the rubber connecting part is connected with the bottom of the rubber waist part, the rubber waist part extends towards the obliquely upper part of the rubber connecting part, a sealing lip is arranged at the foremost end of the rubber waist part, the distance between the sealing lip and the bottom connecting part of the rubber waist part is used as the rotating radius of the sealing lip, and the supporting finger spring is bonded with the whole rubber sealing element in a vulcanization mode. The invention can seal the shaft and the hole, the sealing lip has larger rotating radius when the shaft jumps in the radial direction, and the supporting finger-shaped spring is also arranged, thereby having excellent sealing effect for solving the problems of large radial jumping amount and large diameter of the bearing.
Description
Technical Field
The invention belongs to the field of bearing sealing, and particularly relates to a bearing sealing element with a supporting finger-shaped spring.
Background
With the rapid development of times, the working efficiency and capacity of the original equipment can not meet the requirements gradually, the size of the equipment is forced to be larger and larger, the diameter of a bearing used on some equipment is increased, and once the bearing has problems, the maintenance cost is huge. In order to increase the reliability of the bearing operation, the bearing seal plays a key role. The existing sealing structure reduces radial component force provided by sealing along with the increase of the diameter of the bearing, and the sealing ring has poor shaft following performance when a shaft jumps, so that sealing oil leakage is caused, the service life of the bearing is further shortened, and the use cost is increased.
Disclosure of Invention
The invention aims to provide a bearing sealing element with a supporting finger spring, which can seal a shaft and also can seal a hole, a sealing lip has a larger rotating radius when the shaft radially jumps, and meanwhile, the supporting finger spring with uniform radial force in the circumferential direction is also arranged, so that the bearing sealing element has excellent sealing effect on a bearing with large radial jumping amount and large bearing diameter.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a bearing seal with support finger spring, includes support skeleton and rubber seal, rubber seal's inboard surface is provided with supports finger spring, rubber seal includes rubber connecting portion and rubber waist, the outside end and the support skeleton interconnect of rubber connecting portion, the bottom of rubber connecting portion and the bottom interconnect of rubber waist, the rubber waist stretches out towards the oblique top of rubber connecting portion, the foremost end of rubber waist is equipped with the seal lip, and the distance is as the radius of rotation of seal lip between the bottom junction of seal lip and rubber waist, support finger spring and whole rubber seal bond together through vulcanization mode.
Further, the supporting finger spring comprises a left spring piece, a right spring piece and an anti-dropping pressing piece, and the shape of the whole supporting finger spring is "-/".
Furthermore, the bottoms of the left spring piece and the right spring piece are mutually connected, the connecting part is in an arc shape, and the left spring piece and the right spring piece are sequentially and oppositely connected in a staggered mode.
Furthermore, arc-shaped grooves are formed in the left spring piece and the right spring piece, and the top end of one spring piece is connected with the anti-falling pressing piece.
Furthermore, the supporting finger spring is made of stainless steel with high strength, high fatigue performance and high toughness, and the thickness of the supporting finger spring is 0.1 mm.
Furthermore, an anti-falling rubber bump is arranged on the upper surface of the rubber waist part, and covers and wraps the supporting finger-shaped spring.
Furthermore, a pressure-proof space is arranged below the bottom end of the rubber waist.
Furthermore, the sealing lip is in a horseshoe shape, the upper end of the sealing lip is in arc-shaped transitional connection with the upper end of the rubber waist, and the lower end of the sealing lip is provided with a rubber bulge protruding out of the rubber waist; and the sealing lip is fitted over the shaft or bore when assembled.
Furthermore, an installation chamfer is arranged at an end corner of the outer side of the upper end of the supporting framework, the supporting framework is assembled on the shaft or in the hole in an interference mode, and the supporting framework is made of a steel framework and vulcanized impregnated cotton cloth or high-hardness rubber.
Further, the supporting framework, the rubber sealing element and the supporting finger spring are placed in a vulcanization mold and bonded into a whole structure during rubber vulcanization, wherein the rubber sealing element is of a full-circle sealing structure or a split structure.
The invention has the beneficial effects that: in the sealing element, the double anti-falling design ensures that the supporting finger-shaped spring cannot fall into the bearing even after being stripped from the rubber; when the sealing lip moves with the shaft in the same radial jumping amount, the larger the rotating radius is, the smaller the rotating angle of the sealing lip is, and the smaller the change of the radial force provided by the sealing lip along with the radial jumping of the shaft is, so that the performance of the sealing lip along with the shaft is good when the sealing lip jumps with the shaft, the radial force in the circumferential direction is uniformly distributed, the sealing effect is good, and meanwhile, the rotating angle of the spring at the waist root position is small, so that the fatigue life of the spring is prolonged, and the service life of the sealing lip is prolonged; in addition, the spring providing radial force to the lip in the seal is a full-piece finger spring, and the spring with the structure can enable the seal lip to be inward or outward.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of the inward lip cross-section of the seal of the present invention.
Fig. 2 is a schematic view of the outward lip cross-section of the sealing structure of the present invention.
Fig. 3 is a schematic view of the seal support finger spring of the present invention.
Labeled as: 1-supporting framework, 11-mounting chamfer, 2-rubber sealing element, 21-rubber connecting part, 22-rubber waist, 23-anti-falling rubber bump, 24-rotating radius, 25-anti-pressing space, -3-sealing lip, 31-rubber bulge, 32-arc transition region, 4-supporting finger-shaped spring, 41-anti-falling pressing piece, 42-left spring piece, 43-arc connecting part, 44-right spring piece and 45-arc groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a bearing seal with a supporting finger spring, comprising a supporting frame 1 and a rubber seal 2, wherein the supporting finger spring 4 is arranged on the inner side surface of the rubber seal 2, the rubber seal 2 comprises a rubber connecting portion 21 and a rubber waist portion 22, the outer side end of the rubber connecting portion 21 is connected with the supporting frame 1, the bottom of the rubber connecting portion 21 is connected with the bottom of the rubber waist portion 22, the rubber waist portion 22 extends towards the oblique upper side of the rubber connecting portion 21, the foremost end of the rubber waist portion 22 is provided with a sealing lip 3, the distance between the sealing lip 3 and the bottom connection of the rubber waist portion 22 is used as a rotation radius 24 of the sealing lip, and the supporting finger spring 4 is bonded with the whole rubber seal 2 through vulcanization.
In the embodiment, the supporting framework 1 consists of a steel framework, vulcanized impregnated cotton cloth or high-hardness rubber, is in interference fit with the mounting groove, and is provided with a mounting chamfer 11 at the upper end for convenient mounting; in the rubber sealing element 2, in order to prevent the rubber waist 22 from interfering with the sealing pressure plate in the movement process, a pressure-proof space 21 is arranged below the rubber waist 22, meanwhile, above the rubber waist 22, rubber enters the anti-falling rubber bump 23 from the spring arc-shaped groove 45 during vulcanization, the anti-falling rubber bump 23 annularly wraps the spring piece around a central line to play a role in preventing the spring from falling off, the rubber waist 2 has a longer rotating radius 24, namely the distance between the sealing lip 3 and the bottom connection part of the rubber waist 22, and the sealing lip 32 can be radially far away from or close to the central line when the arc connecting part 43 of the supporting finger-shaped spring 4 bends at a very small angle, so that the axial following performance of the lip 32 is ensured; the sealing lip 3 is vulcanized into a horseshoe shape by rubber, a rubber bulge 31 is arranged below the sealing lip 3, the rubber bulge 31 is at a die assembly seam position and protrudes out of the rubber waist 24 so as to trim flash, meanwhile, the sealing lip 3 and the rubber waist 2 are mutually connected at the upper part through a section of circular arc transition area 33, and the maximum permitted fillet above the sealing lip 3 is R0.5mm; the supporting finger spring 4 is bonded on the rubber sealing element 2 through vulcanization, the anti-dropping pressing sheet 41 is arranged at the upper part of the supporting finger spring 4 and is propped in the mounting groove by the supporting framework 1, and the shape of the whole supporting finger spring is designed to be "-/".
As shown in fig. 3, the supporting finger spring 2 comprises a left spring plate 42, a right spring plate 44 and an anti-dropping pressure plate 41, wherein the bottom parts of the left spring plate 42 and the right spring plate 44 are connected with each other, the connecting part is in a circular arc shape, and the left spring plate 42 and the right spring plate 44 are sequentially and oppositely connected with each other in a staggered manner; and the left spring piece 42 and the right spring piece 44 are provided with arc-shaped grooves 45. Typically, the supporting finger springs are made of high strength, high fatigue, high toughness stainless steel, with a thickness designed to be 0.1 mm.
In summary, in the sealing element, the spring providing radial force for the lip is a whole piece type finger-shaped spring, and the spring with the structure can ensure that the sealing lip is inward or outward; meanwhile, the anti-falling design ensures that the support finger-shaped spring cannot fall into the bearing even after being stripped from the rubber; and the lip is good along with the axle performance when the sealing lip is beated along with the axle, and the circumferencial direction radial force distributes evenly, and sealed effect is good, and the rotation angle of spring in waist root position is little simultaneously for spring fatigue life increases, thereby increases sealed life.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present invention in any way, and all technical solutions obtained by using equivalent substitution methods fall within the scope of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (10)
1. The utility model provides a bearing seal with support finger spring, includes support skeleton and rubber seal, its characterized in that, rubber seal's inboard surface is provided with supports finger spring, rubber seal includes rubber connecting portion and rubber waist, the outside end and the support skeleton interconnect of rubber connecting portion, the bottom interconnect of rubber connecting portion and the bottom of rubber waist, the rubber waist stretches out towards the oblique top of rubber connecting portion, the foremost end of rubber waist is equipped with the seal lip, and the distance is as the radius of rotation of seal lip between the bottom junction of seal lip and rubber waist, it bonds together through vulcanization mode with whole rubber seal to support finger spring.
2. The bearing seal with support finger spring of claim 1, wherein said support finger spring comprises a left spring leaf, a right spring leaf and a trip preventing tab, and the entire support finger spring is shaped "—The \/' shape.
3. The bearing seal with support finger spring of claim 2, wherein the bottom portions of the left spring plate and the right spring plate are connected to each other and the connecting portion is formed in a circular arc shape, and the left spring plate and the right spring plate are connected to each other in a staggered and opposite manner.
4. The seal of claim 2, wherein the left spring plate and the right spring plate have arcuate slots formed therein, and wherein the spring plate has an anti-separation tab attached to a top end thereof.
5. The bearing seal with support finger springs of claim 1, wherein said support finger springs are fabricated from high strength, high fatigue performance, high toughness stainless steel having a thickness of 0.1 mm.
6. The bearing seal with support finger spring of claim 1, wherein said rubber waist portion has an upper surface provided with an anti-slip rubber projection that covers and encases said support finger spring.
7. The bearing seal with support finger spring of claim 1, wherein a pressure-proof space is provided below the bottom end of said rubber waist.
8. The bearing seal with supporting finger spring as claimed in claim 1, wherein the sealing lip is shaped like a "horseshoe", the upper end of the sealing lip is transitionally connected with the upper end of the rubber waist in a circular arc shape, and the lower end of the sealing lip is provided with a rubber bulge protruding from the rubber waist; and the sealing lip is fitted over the shaft or bore when assembled.
9. The bearing seal with support finger spring as claimed in claim 1, wherein the support frame has a mounting chamfer at the outer end corner of the upper end, and is interference fitted on the shaft or in the hole, and is made of steel frame, vulcanized impregnated cotton cloth or high hardness rubber.
10. The bearing seal with support finger springs of claim 1, wherein the support backbone, rubber seal, support finger springs are bonded into a unitary structure during rubber vulcanization by being placed in a vulcanization mold, wherein the rubber seal is a full-circle seal or a split structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907490.3A CN113531123A (en) | 2021-08-09 | 2021-08-09 | Bearing seal with support finger spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110907490.3A CN113531123A (en) | 2021-08-09 | 2021-08-09 | Bearing seal with support finger spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113531123A true CN113531123A (en) | 2021-10-22 |
Family
ID=78090731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110907490.3A Pending CN113531123A (en) | 2021-08-09 | 2021-08-09 | Bearing seal with support finger spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113531123A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201496557U (en) * | 2009-08-27 | 2010-06-02 | 青岛海力威密封有限公司 | Ocv oil seal |
| CN201496555U (en) * | 2009-08-19 | 2010-06-02 | 青岛开世密封工业有限公司 | PTFE sealing element |
| CN202091515U (en) * | 2011-06-20 | 2011-12-28 | 成都盛帮密封件股份有限公司 | Low-pressure resistant and big-jump resistant high-speed oil seal |
| CN105757248A (en) * | 2014-12-18 | 2016-07-13 | 北京橡胶工业研究设计院 | Large composite-structure sealing element for rotating shaft |
| CN205534223U (en) * | 2016-01-11 | 2016-08-31 | 安徽库伯密封技术有限公司 | Sealing washer of lip string of a hat spring leaf |
| CN109458458A (en) * | 2018-11-21 | 2019-03-12 | 陕西法士特汽车传动集团有限责任公司 | High-speed oil seal structure, gearbox and speed reducer |
| CN208664920U (en) * | 2018-08-27 | 2019-03-29 | 昆山莲雄汽车零部件有限公司 | The shoes spring leaf disconnecting prevention structure of automotive power sunroof glass supporter |
| JP2019132325A (en) * | 2018-01-31 | 2019-08-08 | Nok株式会社 | Sealing device |
| CN111120521A (en) * | 2020-02-13 | 2020-05-08 | 南京利德东方橡塑科技有限公司 | Novel main shaft presss from both sides cloth seal structure |
| CN212131303U (en) * | 2020-04-16 | 2020-12-11 | 上海铭川密封件科技有限公司 | Oil seal of flooding plug framework |
| CN112253628A (en) * | 2020-11-12 | 2021-01-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Inner lip type combined seal for hub bearing |
| CN216242286U (en) * | 2021-08-09 | 2022-04-08 | 南京利德东方橡塑科技有限公司 | Bearing seal with support finger spring |
-
2021
- 2021-08-09 CN CN202110907490.3A patent/CN113531123A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201496555U (en) * | 2009-08-19 | 2010-06-02 | 青岛开世密封工业有限公司 | PTFE sealing element |
| CN201496557U (en) * | 2009-08-27 | 2010-06-02 | 青岛海力威密封有限公司 | Ocv oil seal |
| CN202091515U (en) * | 2011-06-20 | 2011-12-28 | 成都盛帮密封件股份有限公司 | Low-pressure resistant and big-jump resistant high-speed oil seal |
| CN105757248A (en) * | 2014-12-18 | 2016-07-13 | 北京橡胶工业研究设计院 | Large composite-structure sealing element for rotating shaft |
| CN205534223U (en) * | 2016-01-11 | 2016-08-31 | 安徽库伯密封技术有限公司 | Sealing washer of lip string of a hat spring leaf |
| JP2019132325A (en) * | 2018-01-31 | 2019-08-08 | Nok株式会社 | Sealing device |
| CN208664920U (en) * | 2018-08-27 | 2019-03-29 | 昆山莲雄汽车零部件有限公司 | The shoes spring leaf disconnecting prevention structure of automotive power sunroof glass supporter |
| CN109458458A (en) * | 2018-11-21 | 2019-03-12 | 陕西法士特汽车传动集团有限责任公司 | High-speed oil seal structure, gearbox and speed reducer |
| CN111120521A (en) * | 2020-02-13 | 2020-05-08 | 南京利德东方橡塑科技有限公司 | Novel main shaft presss from both sides cloth seal structure |
| CN212131303U (en) * | 2020-04-16 | 2020-12-11 | 上海铭川密封件科技有限公司 | Oil seal of flooding plug framework |
| CN112253628A (en) * | 2020-11-12 | 2021-01-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Inner lip type combined seal for hub bearing |
| CN216242286U (en) * | 2021-08-09 | 2022-04-08 | 南京利德东方橡塑科技有限公司 | Bearing seal with support finger spring |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211022 |
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| WD01 | Invention patent application deemed withdrawn after publication |