CN108253140A - Shafting support end sealing structure and its framework type sealing ring - Google Patents
Shafting support end sealing structure and its framework type sealing ring Download PDFInfo
- Publication number
- CN108253140A CN108253140A CN201711356044.8A CN201711356044A CN108253140A CN 108253140 A CN108253140 A CN 108253140A CN 201711356044 A CN201711356044 A CN 201711356044A CN 108253140 A CN108253140 A CN 108253140A
- Authority
- CN
- China
- Prior art keywords
- ring
- bearing
- support end
- mounting hole
- annular
- 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.)
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Classifications
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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
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Of Bearings (AREA)
Abstract
The present invention relates to a kind of shafting support end sealing structure and its framework type sealing rings.The annular bead structure of the rubber ring of framework type sealing ring is slidingly sealed cooperation with step surface, when shaft is by circular runout, it is produced relative sliding radially between annular bead structure and step surface, avoid rubber ring by impact force unstable wear, the service life of sealing ring is improved, solves the problems, such as that bounce of the existing sealing ring because of rotary shaft generates it sealing ring short life caused by impact.
Description
Technical field
The present invention relates to a kind of shafting support end sealing structure and its framework type sealing rings.
Background technology
In the shafting support end of grease lubrication of frequent dissembling inspection is needed, lubricating grease is revealed in operational process in order to prevent
Lead to bearing premature failure, frequently with radial contact seal, radial direction seal ring is used in this sealing structure.Using above-mentioned close
In the bearing of seal structure, the sealing lip of sealing ring is tightly attached on the periphery of shaft, so as to ensure sealing performance.
A kind of rotary shaft lip seal as disclosed in the Chinese patent document that Authorization Notice No. is 201836389 U of CN,
Including skeleton, spring and rubber ring, for skeleton for being connect with bearing block, the inside left and right ends of rubber ring are respectively equipped with main lip
Mouth and secondary lip, main lip and secondary lip miss for being contacted with the peripheral surface of rotary shaft so as to form rotary seal due to manufacturing
The presence of difference, rotary shaft can generate bounce radially in rotation process, and the bounce of rotary shaft can generate impact to sealing ring
Power causes the rubber ring of sealing ring to wear the problem of aggravating, causing the short life of sealing ring.
Invention content
The purpose of the present invention is to provide a kind of framework type sealing ring, to solve existing sealing ring because radially of the axis of rotation
Bounce leads to the problem of it sealing ring short life caused by impact；Meanwhile the present invention also provides a kind of using above-mentioned skeleton
The shafting support end sealing structure of sealing ring.
To achieve the above object, shafting support end sealing structure of the invention adopts the following technical scheme that：
The technical solution 1 of shafting support end sealing structure：Shafting support end sealing structure, including shaft, bearing and bearing block, institute
Bearing block is stated equipped with bearing mounting hole, the bearing is mounted in the bearing mounting hole, is equipped in the bearing mounting hole
Framework type sealing ring, the framework type sealing ring include mounting framework and rubber ring, and the framework type sealing ring is in bearing
Outside, the shaft have towards the bearing mounting hole and the step surface that radially extends, the rubber ring with and institute
State the annular bead structure that step surface is slidingly sealed cooperation.The annular bead structure of the rubber ring of framework type sealing ring is slided with step surface
Sealing cooperation, when shaft is by circular runout, between annular bead structure and step surface produces relative sliding, avoids rubber radially
Cushion rubber unstable wear by impact force improves the service life of sealing ring, solves existing sealing ring because of rotary shaft
Bounce leads to the problem of it sealing ring short life caused by impact.
The technical solution 2 of shafting support end sealing structure, on the basis of the technical solution 1 of shafting support end sealing structure
It is further improved to obtain：The annular bead structure includes two in shaft radially spaced annular lip body, two annulars
Lip body is slidably matched with step surface so as to make to form annular seal space between two lip bodies, and shaft makes annular seal space when rotating
Middle formation vacuum chamber improves sealing effect.
The technical solution 3 of shafting support end sealing structure, on the basis of the technical solution 2 of shafting support end sealing structure
It is further improved to obtain：The annular lip body extends from inside to outside towards shaft radially inner side.
The technical solution 4 of shafting support end sealing structure, on the basis of the technical solution 2 of shafting support end sealing structure
It is further improved to obtain：The rubber ring includes the connecting portion for being connect with mounting framework and is hanged to bearing mounting hole inside
The overhang stretched, the annular lip structure setting is in the overhang, and annular lip structure setting is in overhang, structure letter
It is single.
The technical solution 5 of shafting support end sealing structure, it is arbitrary in the technical solution 1 ~ 4 of shafting support end sealing structure
It is further improved to obtain on the basis of one：The outer ring top pressure cooperation of the mounting framework and the bearing is solid so as to be compressed
It is scheduled in bearing mounting hole.
The technical solution 6 of shafting support end sealing structure, on the basis of the technical solution 5 of shafting support end sealing structure
It is further improved to obtain：The mounting framework includes, along the axially extending ring body of bearing mounting hole is turned, setting on ring body
There is radially extend to its inside, annular for being connected for the connecting portion of rubber ring to turn edge, the ring body, which has, to be used
In the top pressure face of the outer ring top pressure cooperation with bearing.
The technical solution 7 of shafting support end sealing structure, on the basis of the technical solution 5 of shafting support end sealing structure
It is further improved to obtain：The framework type sealing ring is fixed on by circlip in the bearing mounting hole.
The framework type sealing ring of the present invention adopts the following technical scheme that：
The technical solution 1 of framework type sealing ring：Framework type sealing ring, including mounting framework and rubber ring, the rubber ring tool
It is useful for being slidingly sealed the annular bead structure of cooperation towards axial step surface with shaft.The ring of the rubber ring of framework type sealing ring
Shape bead structure is slidingly sealed cooperation with step surface, when shaft is by circular runout, radially between annular bead structure and step surface
On produce relative sliding, avoid rubber ring by impact force unstable wear, improve the service life of sealing ring, solve existing
Some sealing rings sealing ring short life caused by the bounce of rotary shaft leads to the problem of it impact.
The technical solution 2 of framework type sealing ring is further improved on the basis of the technical solution 1 of framework type sealing ring
It arrives：The annular bead structure includes two in shaft radially spaced annular lip body, and two annular lip bodies are and step
Face is slidably matched to make to form annular seal space between two lip bodies.Shaft makes to form vacuum in annular seal space when rotating
Chamber improves sealing effect.
The technical solution 3 of framework type sealing ring is further improved on the basis of the technical solution 2 of framework type sealing ring
It arrives：The rubber ring includes the connecting portion for being connect with mounting framework and the overhang to overhanging on the inside of bearing mounting hole,
For the annular lip structure setting in the overhang, annular lip structure setting is simple in structure in overhang.
The technical solution 4 of framework type sealing ring is further improved on the basis of the technical solution 2 of framework type sealing ring
It arrives：The annular lip body extends from inside to outside towards shaft radially inner side.
The technical solution 5 of framework type sealing ring, in the technical solution 1 ~ 4 of framework type sealing ring on the basis of any one
It is further improved to obtain：The mounting framework has the top pressure face for the outer ring top pressure cooperation with the bearing.
The technical solution 6 of framework type sealing ring is further improved on the basis of the technical solution 5 of framework type sealing ring
It arrives：The mounting framework is included along the axially extending ring body of bearing mounting hole is turned, and ring body is equipped with radially to it
Annular that inside extends, for being connected for the connecting portion turns edge, and the top pressure face is arranged on the ring body.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment 1 of the shafting support end sealing structure of the present invention；
Fig. 2 is the partial enlarged view on Fig. 1 tops；
Fig. 3 is the structural formula schematic diagram of the framework type sealing ring in Fig. 1；
Fig. 4 is the schematic cross-section of the framework type sealing ring in the embodiment 2 of the shafting support end sealing structure of the present invention；
In attached drawing：1st, shaft；2nd, circlip for hole；3rd, framework type sealing ring；4th, bearing outer ring；5th, bearing block；6th, axis bullet
Property baffle ring；11st, step surface；31st, ring body；32nd, annular turns edge；33rd, connecting portion；34th, overhang；341st, first annular lip
Body；342nd, the second annular lip body；343rd, third annular lip body.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment 1 of the shafting support end sealing structure of the present invention, as shown in Figure 1 to Figure 3, the sealing of shafting support end
Structure includes shaft 1, bearing and bearing block 5, and bearing block 5 is equipped with bearing mounting hole, is equipped in bearing mounting hole for axis
The block machine of outer ring block cooperation held, bearing is mounted in bearing mounting hole and the outer ring block of bearing coordinates in block machine.Axis
It holds and framework type sealing ring 3 is equipped in mounting hole, framework type sealing ring 3 includes mounting framework and rubber ring, at framework type sealing ring 3
In the outside of bearing, shaft 1 has the step surface 11 extended towards bearing mounting hole and radially, and rubber ring has and step
Face 11 is slidingly sealed the annular bead structure of cooperation.It is handled in the total step surface 11 of the present embodiment by grinding, to reduce friction.
In the present embodiment, as shown in figure 3, annular bead structure includes two in the radially spaced annular of shaft 1
Lip body, the two annular lip bodies are first annular 341 and second annular lip body 342 of lip body respectively, and two annular lip bodies are and platform
Terrace 11 is slidably matched to make to form annular seal space between two lip bodies.When shaft 1 rotates, the sky in annular seal space
Gas can be carried over, and formed vacuum chamber so as to make to be formed certain vacuum degree in annular seal space, improved tightness.
In the present embodiment, as shown in figure 3, mounting framework is metallic framework, including axially extending along bearing mounting hole
Ring body 31, ring body 31 are equipped with the annular radially extended to its inside and turn edge 32, and ring body 31, which has, to be used for
With the top pressure face of the outer ring top pressure cooperation of bearing, top pressure face is the front end face of ring body 31 in the present embodiment.It is installed to
Behind position, the front end face and the end face top pressure in 4 outside of bearing outer ring of ring body 31 coordinate, so as to which 4 top pressure of bearing outer ring be fixed
In bearing mounting hole.Ring body 31 and annular, which turn edge, in the present embodiment 32 is wholely set, and the section of formation is L-shaped, this
Sample is easy to process.Framework type sealing ring 3 is fixed by circlip for hole 2 in the present embodiment, circlip for hole 2 and installation
The rear end face top pressure of skeleton coordinates so as to be fixed in bearing mounting hole.
Rubber ring includes the connecting portion 33 for being connect with mounting framework and the overhanging to overhanging on the inside of bearing mounting hole
Portion 34, annular lip structure setting is in overhang 34.The shape of connecting portion 33 and the shape adaptation of mounting framework, fitting are arranged on
The inside of mounting bracket, the thickness of overhang 34 is thicker, so as to make to form step at overhang 34 and the link position of connecting portion 33,
The step and annular, which turn edge, 32 to be adapted to, this ensure that the bonding strength of rubber ring and mounting framework.Two of annular bead structure
Annular lip body is arranged on the lateral surface of overhang and extends outwardly from top to bottom.
The present invention shafting support end sealing structure can be applied to air compressor machine, retarder, speed changer or other have
In the product of shaft.During assembling, first bearing outer ring 4, rolling element and retainer are installed in bearing mounting hole, then by bone
Frame type sealing ring 3 is pressed into bearing mounting hole, then carries out axially position by circlip for hole 2；Using circlip for shaft 6
Bearing inner race is fixed in shaft, shaft is installed to together with bearing inner race in the endoporus that the rolling element of bearing surrounds.Assembling
After in place, the lip of framework type sealing ring 3 is contacted with the step surface 11 of shaft, and bearings end is made to form the sky of a sealing
Between, lubricant grease can be stored, ensures the transsexual energy of profit of bearing.The annular seal space of framework type sealing ring 3 is when shaft rotates
Vacuum chamber is formed, is further ensured that sealing effect.When bounce radially occurs for shaft, the lip body of framework type sealing ring 3 with
Step surface 11 produces relative sliding, avoid rubber ring by impact force unstable wear, improve the service life of sealing ring,
Solve the problems, such as that bounce of the existing sealing ring because of rotary shaft generates it sealing ring short life caused by impact.
The embodiment 2 of the shafting support end sealing structure of the present invention, as shown in figure 4, in the present embodiment, rubber ring hangs
It is set in extending portion 34 there are one annular lip body, i.e. third annular lip body 343, certainly in other embodiments, annular lip body can be with
It is three, four, five or other quantity, other are same as Example 1, repeat no more.
The embodiment 3 of the shafting support end sealing structure of the present invention, in the present embodiment, the section of mounting framework is U-shaped
Slot structure, rubber ring fitting are arranged in U-lag, and certainly, in other embodiments, mounting framework can also be other structures,
Other are same as Example 1, repeat no more.
The embodiment 4 of the shafting support end sealing structure of the present invention, in the present embodiment, bearing outer ring pass through hole elasticity
Baffle ring is fixed, and the rear and front end of framework type sealing ring is fixed by baffle ring at this time, other are same as Example 1, is repeated no more.
The embodiment 5 of the shafting support end sealing structure of the present invention, in the present embodiment, sets on the outside of bearing mounting hole
Screw thread is put, baffle ring is set in the outside of framework type sealing ring, baffle ring and bearing mounting hole are by screw-threaded coupling, other and embodiment
1 is identical, repeats no more.
The framework type sealing ring of the present invention, the framework type sealing ring and the embodiment of above-mentioned bearings end sealing structure
In framework type sealing ring structure it is identical, repeat no more.
Claims (10)
1. shafting support end sealing structure, including shaft, bearing and bearing block, the bearing block is equipped with bearing mounting hole, institute
Bearing is stated in the bearing mounting hole, framework type sealing ring, the skeleton sealing are equipped in the bearing mounting hole
Circle includes mounting framework and rubber ring, it is characterised in that：The framework type sealing ring is in the outside of bearing, and the shaft has
Towards the bearing mounting hole and the step surface that radially extends, the rubber ring, which has to be slidingly sealed with the step surface, matches
The annular bead structure of conjunction.
2. shafting support end sealing structure according to claim 1, it is characterised in that：The annular bead structure includes two
In shaft radially spaced annular lip body, two annular lip bodies be slidably matched with step surface so as to make two lip bodies it
Between form annular seal space.
3. shafting support end sealing structure according to claim 2, it is characterised in that：Annular lip body court from inside to outside
Extend to shaft radially inner side.
4. shafting support end sealing structure according to claim 2, it is characterised in that：The rubber ring include for peace
The connecting portion for filling skeleton connection and the overhang to overhanging on the inside of bearing mounting hole, the annular lip structure setting is described outstanding
In extending portion.
5. the shafting support end sealing structure according to any one in claim 1 ~ 4, it is characterised in that：The installation bone
The outer ring top pressure of frame and the bearing coordinates to be pressed abd fixed in bearing mounting hole.
6. shafting support end sealing structure according to claim 5, it is characterised in that：The mounting framework is included along shaft
The axially extending ring body of mounting hole is held, ring body is equipped with radially extending to its inside, for confession rubber ring
The annular of connecting portion connection turns edge, and the ring body has the top pressure face for the outer ring top pressure cooperation with bearing.
7. shafting support end sealing structure according to claim 5, it is characterised in that：The framework type sealing ring passes through bullet
Property baffle ring is fixed in the bearing mounting hole.
8. framework type sealing ring, including mounting framework and rubber ring, it is characterised in that：The rubber ring, which has, to be used for and shaft
The annular bead structure of cooperation is slidingly sealed towards axial step surface.
9. framework type sealing ring according to claim 8, it is characterised in that：The annular bead structure includes two in shaft
Radially spaced annular lip body, two annular lip bodies are slidably matched to make to be formed between two lip bodies with step surface
Annular seal space.
10. framework type sealing ring according to claim 9, it is characterised in that：The rubber ring is included for installing bone
The connecting portion of frame connection and the overhang to overhanging on the inside of bearing mounting hole, the annular lip structure setting is in the overhang
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711356044.8A CN108253140B (en) | 2017-12-16 | 2017-12-16 | Shafting support end sealing structure and framework type sealing ring thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711356044.8A CN108253140B (en) | 2017-12-16 | 2017-12-16 | Shafting support end sealing structure and framework type sealing ring thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108253140A true CN108253140A (en) | 2018-07-06 |
| CN108253140B CN108253140B (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711356044.8A Active CN108253140B (en) | 2017-12-16 | 2017-12-16 | Shafting support end sealing structure and framework type sealing ring thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090123101A1 (en) * | 2007-11-08 | 2009-05-14 | Jtekt Corporation | Rolling bearing device |
| DE102012001379A1 (en) * | 2012-01-24 | 2012-09-06 | Daimler Ag | Beam axle of motor vehicle, has corrosion-resistant structure that is formed with contact surface on which seal is abutted |
| CN202520952U (en) * | 2011-11-29 | 2012-11-07 | 郭强 | Long/short-lip unilaterally-sealed Y-shaped rubber moving seal ring |
| JP5365346B2 (en) * | 2009-05-29 | 2013-12-11 | 株式会社ジェイテクト | Sealing device, sealing structure and rolling bearing |
| CN203926420U (en) * | 2014-06-27 | 2014-11-05 | 浙江固耐橡塑科技有限公司 | Sting lip formula bearing sealed ring |
| CN105402255A (en) * | 2015-12-18 | 2016-03-16 | 无锡市第二轴承有限公司 | Double-layer sealing pairing bearing |
-
2017
- 2017-12-16 CN CN201711356044.8A patent/CN108253140B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090123101A1 (en) * | 2007-11-08 | 2009-05-14 | Jtekt Corporation | Rolling bearing device |
| JP5365346B2 (en) * | 2009-05-29 | 2013-12-11 | 株式会社ジェイテクト | Sealing device, sealing structure and rolling bearing |
| CN202520952U (en) * | 2011-11-29 | 2012-11-07 | 郭强 | Long/short-lip unilaterally-sealed Y-shaped rubber moving seal ring |
| DE102012001379A1 (en) * | 2012-01-24 | 2012-09-06 | Daimler Ag | Beam axle of motor vehicle, has corrosion-resistant structure that is formed with contact surface on which seal is abutted |
| CN203926420U (en) * | 2014-06-27 | 2014-11-05 | 浙江固耐橡塑科技有限公司 | Sting lip formula bearing sealed ring |
| CN105402255A (en) * | 2015-12-18 | 2016-03-16 | 无锡市第二轴承有限公司 | Double-layer sealing pairing bearing |
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| Publication number | Publication date |
|---|---|
| CN108253140B (en) | 2021-04-02 |
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