CN205315710U - Resistant high decentered sealing device - Google Patents
Resistant high decentered sealing device Download PDFInfo
- Publication number
- CN205315710U CN205315710U CN201521027504.9U CN201521027504U CN205315710U CN 205315710 U CN205315710 U CN 205315710U CN 201521027504 U CN201521027504 U CN 201521027504U CN 205315710 U CN205315710 U CN 205315710U
- Authority
- CN
- China
- Prior art keywords
- sealing device
- rubber bodies
- dust
- seal
- resistance
- 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.)
- Active
Links
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a resistant high decentered sealing device comprises skeleton, the rubber body, spring and sealing edge, is that the rubber body partly wraps up the skeleton, and the rubber body and the common seal shell internal diameter of skeleton, excircle are equipped with the sealing edge and the rotation axis contact seal of spring, the utility model has the characteristics of be applicable to the shell and the axle between big decentered rotary seal, the lip pliability is good, following nature is good.
Description
Technical field
This utility model belongs to vehicle sealing device technical field, especially relates to a kind of resistance to high eccentric sealing device.
Background technology
At present in field of sealing technology, not only to provide reliable sealing, also require there is low rub resistance moment of torsion. Beat radially of the axis of rotation excessive, be one of rotary oil seal seal failure major reason. Axle is in quick rotary course, there is circular runout in himself, viscoelasticity due to inertia and rubber self, seal lip can not follow rotating shaft surface immediately, and make generation gap between sealing lip and rotating shaft, when rotating shaft is displaced outwardly, gap-closing, thus forming dynamically " breathing " gap between seal lip and rotating shaft. When rotating shaft circular runout is excessive, because " breathing " excesssive gap causes oil leakage. Therefore the countershaft tracing ability of sealed lip is improved most important. Particularly in installing axle and installing hole bias relatively big (more than 1mm), during axle high speed rotating (linear velocity on axle surface reaches 10m/s), ensure the lip of sealing device have with rotating shaft reliable contact just most important, for solving this problem, dispose spring 4 in seal lip and increase the height of sealing device 3 and reduce its thickness to improve the tracing ability of sealing device and axle. Thus ensureing that sealing device lip has reliable contact with rotating shaft, it is provided that reliably seal.
One of another major reason that sealing device lost efficacy is abrasion or the scuffing of lip. And causing the reason that lip scratches except assembly technology is unreasonable, another most important reason is inside the entrance sealing device of extraneous foreign body, and in the process of moving, extraneous muddy water and dust are major pollutants to vehicle. In current field of sealing technology, for reaching well to seal the effect of muddy water, current dust seal design, for lips or other maze-type structures, shortcoming is to need big installing space, friction torque also can strengthen accordingly.
Summary of the invention
The purpose of this utility model is to provide a kind of suitable in the rotary sealing appts of large eccentricity between shell and axle, and the lip pliability of the eccentric sealed device of the resistance to height of this utility model is good and has good followability.
This utility model is realized in, a kind of resistance to high eccentric sealing device, is made up of skeleton, rubber bodies, spring and seal lip, is characterized in rubber bodies half wrapping frame, rubber bodies and the common seal casinghousing internal diameter of skeleton, cylindrical is provided with the seal lip of spring and contacts sealing with rotating shaft.
In order to realize the purpose of this utility model further, it is possible to it is the thinnest to be that the rubber bodies from top to bottom thickness of described formation seal lip is gradually reduced formation waist place thickness.
In order to realize the purpose of this utility model further, it is possible to being that rubber bodies has downwardly extended at least one dust-proof valve, dust-proof valve contacts sealing with the dust cap being arranged on below.
In order to realize the purpose of this utility model further, it is possible to L-type that to be the cross section of described dust cap be or U-shaped.
Compared with the prior art this utility model has following distinguishing feature and good effect: this utility model is to adopt partly to expose framing structure, it is made up of rubber bodies and metallic framework, integral installation is on housing, sealing is contacted with housing, it is ensured that the installation of sealing device is reliable while of by rubber with skeleton; Oil sealing lip is provided with spring, and the waist height of formation is higher, thickness is thin, so that seal lip pliability is big. So, very big with rotating shaft setting-up eccentricity at housing, in the running, seal lip can have good followability to axle, so that it is guaranteed that seal lip contacts with axle all the time, plays the effect well sealing liquid; Dust-proof valve and dust cap combined effect, for seal casinghousing and the muddy water outside rotating shaft, it is to avoid muddy water enters, at least one dust-proof valve is adopted to seal, its dust-proof valve thinner thickness, big with the magnitude of interference of dust cap, good seal, and reduce assembly space, reduce the friction torque in operation process and abrasion loss, when outside muddy water is heavier, it is possible to use twice and above dust-proof valve, and adopt cross section similar for U-shaped dust cap, improve sealing device and seal the ability of muddy water.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is described in further detail.
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is another kind of structural representation of the present utility model.
Fig. 3 is another structural representation of the present utility model.
Detailed description of the invention
Embodiment 1, a kind of resistance to high eccentric sealing device, with reference to Fig. 1, rubber bodies 1 half wrapping frame 2, rubber bodies 1 and common seal casinghousing 7 internal diameter of skeleton 2, rubber bodies 1 upwardly extends formation seal lip 3, and cylindrical is provided with the seal lip 3 of spring 4 and contacts sealing with rotating shaft 8, and this constitutes a kind of structure of the present utility model.
Embodiment 2, a kind of resistance to high eccentric sealing device, with reference to Fig. 2, it is on the basis of embodiment 1, it is the thinnest that the rubber bodies from top to bottom thickness of described formation seal lip is gradually reduced formation waist place thickness, rubber bodies 1 has downwardly extended at least one dust-proof valve 5, dust-proof valve 5 contacts sealing with the dust cap 6 being arranged on below, the cross section of dust cap 6 is L-type or U-shaped, the present embodiment adopts dust-proof valve 5 together, the cross section of dust cap 6 is L-type, and one of them face of dust cap 6 contacts sealing with rotating shaft 8, and other are identical with embodiment 1.
Embodiment 3, a kind of resistance to high eccentric sealing device, with reference to Fig. 3, is on the basis of embodiment 2, adopts the dust-proof valve 5 of twice in the present embodiment, and the cross section of dust cap 6 is U-shaped, dust cap 6 cylindrical be axially formed certain angle, other are identical with embodiment 1.
Claims (4)
1. a resistance to high eccentric sealing device, is made up of skeleton, rubber bodies, spring and seal lip, it is characterized in that rubber bodies half wrapping frame, rubber bodies and the common seal casinghousing internal diameter of skeleton, and cylindrical is provided with the seal lip of spring and contacts sealing with rotating shaft.
2. a kind of resistance to high eccentric sealing device according to claim 1, is characterized in that the rubber bodies from top to bottom thickness of described formation seal lip is gradually reduced formation waist place thickness the thinnest.
3. a kind of resistance to high eccentric sealing device according to claim 1, is characterized in that rubber bodies has downwardly extended at least one dust-proof valve, and dust-proof valve contacts sealing with the dust cap being arranged on below.
4. a kind of resistance to high eccentric sealing device according to claim 3, is characterized in that the cross section of described dust cap is L-type or U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027504.9U CN205315710U (en) | 2015-12-14 | 2015-12-14 | Resistant high decentered sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027504.9U CN205315710U (en) | 2015-12-14 | 2015-12-14 | Resistant high decentered sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205315710U true CN205315710U (en) | 2016-06-15 |
Family
ID=56185832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521027504.9U Active CN205315710U (en) | 2015-12-14 | 2015-12-14 | Resistant high decentered sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205315710U (en) |
-
2015
- 2015-12-14 CN CN201521027504.9U patent/CN205315710U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102954194B (en) | Railway vehicle traveling gearbox sealing structure | |
| CN202215736U (en) | Sealing structure for traveling gearbox of railway vehicle | |
| CN205315710U (en) | Resistant high decentered sealing device | |
| CN110486473B (en) | Novel rotary shaft lip-shaped sealing ring | |
| CN204175805U (en) | A kind of bearing seal structure | |
| CN207195902U (en) | A kind of rotary drilling rig center-rotary joint | |
| CN201954002U (en) | Cassette type oil seal | |
| CN205136386U (en) | Sealing bearing | |
| CN201496550U (en) | End surface sealing oil seal | |
| CN211175029U (en) | Sealed dustproof combination formula bearing seal structure | |
| CN103075436A (en) | Universal joint of long-life wear-resisting stamping bearing structure | |
| CN209557484U (en) | A kind of long-life universal joint bearing | |
| CN2599329Y (en) | Combined washer oil seal | |
| CN209385507U (en) | A kind of combined type pressure stabilizing sealing bearing | |
| CN203722378U (en) | Novel motor tail shaft rotating-seal structure | |
| CN201763831U (en) | Grease seal ring for bearing | |
| CN202708073U (en) | Rotary body sealing device and rotary bit of horizontal directed drilling rig | |
| CN207701613U (en) | A kind of sealing device of automobile absorber bearing | |
| CN201651324U (en) | Seal ring | |
| CN202251974U (en) | Main gear oil seal for engineering bridge | |
| CN207060142U (en) | A kind of automobile steel ball motor turning intermediate shaft structure | |
| CN205064595U (en) | A seal structure for bearing | |
| CN206175663U (en) | Rotary shaft seal structure and for rotary shaft seal sealing washer | |
| CN208595161U (en) | Closed type bearing-hub assembly | |
| CN210106402U (en) | High leakproofness deep groove ball bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |