CN103123001A - Combined seal for shaft - Google Patents
Combined seal for shaft Download PDFInfo
- Publication number
- CN103123001A CN103123001A CN2011103681097A CN201110368109A CN103123001A CN 103123001 A CN103123001 A CN 103123001A CN 2011103681097 A CN2011103681097 A CN 2011103681097A CN 201110368109 A CN201110368109 A CN 201110368109A CN 103123001 A CN103123001 A CN 103123001A
- Authority
- CN
- China
- Prior art keywords
- arc
- annular ring
- seal lip
- seal
- shaft
- 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
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- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a combined seal for a shaft. The combined seal for the shaft comprises an annular ring. One inner edge of the annular ring is provided with an arc. A seal lip which is provided with the arc is provided with a deflection angle. The radius of the arc is 1mm-3mm. The deflection angle is 5 degrees-10 degrees. According to the combined seal for the shaft, due to the facts that the inner edge of the annular ring is provided with the arc, and the seal lip which is provided with the arc is provided with the deflection angle, the problem of flow of materials of the seal lip and of the inner edge is avoided, even when a flow situation of the materials of the seal lip occurs, due to the fact that material flow space exists, a sealing effect is incapable of being reduced, and the quality problem of outside leakage of a piston rod is prevented.
Description
Technical field
The present invention relates to a kind of axle with the combination envelope, particularly a kind of for the combination envelope of the axle on hydraulic cylinder piston rod, belong to oil hydraulic cylinder component technical field.
Background technique
Oil hydraulic cylinder is the important executive component of constructional engineering machinery, and the stability of its quality directly affects working efficiency and the reliability of constructional engineering machinery.But the quality problems of piston rod external leakage in use often occur in oil hydraulic cylinder, and the main cause that causes the hydraulic cylinder piston rod external leakage is that rod seal was lost efficacy.The main sealing configuration of piston rod is single lip dust ring+low pressure seal (Y shape circle) ten high pressure sealings (axle seals with combination) at present, nowadays axle is unreasonable with the design of combination envelope, easily make lip generating material flow field problem under the condition of high temperature, the seal lip size and dimension is changed, cause sealability to lose efficacy, so that the quality problems of piston rod external leakage occur.
Summary of the invention
Technical problem for above-mentioned existence the objective of the invention is: the axle that has proposed a kind of good seal performance seals with combination.
Technical solution of the present invention is achieved in that a kind of axle with the combination envelope, comprises an annular ring, and in a place of annular ring, seamed edge is provided with circular arc; The described seal lip place that is provided with circular arc is provided with the drift angle.
Preferably, the radius of described circular arc is 1mm～3mm.
Preferably, described drift angle is 5 °～10 °.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
Axle of the present invention is with the combination envelope, because seamed edge in a place of annular ring is provided with circular arc; The described seal lip place that is provided with circular arc is provided with the drift angle, seal lip place and seamed edge material generation flow field problem when avoiding high temperature mobility status occurs even produce the lip material, owing to there being the Material Flow space, can not reduce sealing effect yet, prevent the quality problems of piston rod external leakage.
Description of drawings
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Accompanying drawing l is the structure sectional view that axle of the present invention seals with combination;
Wherein: 1, annular ring; 2, circular arc; 3, seal lip; 4, drift angle.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described.
Be that a kind of axle of the present invention seals with combination as shown in Figure 1, comprise an annular ring 1, in a place of annular ring 1, seamed edge is provided with circular arc 2; Described seal lip 3 places that are provided with circular arc 2 are provided with drift angle 4; The radius of described circular arc 2 is 1mm～3mm; Described drift angle 4 is 5 °～10 °.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
Axle of the present invention is with the combination envelope, because seamed edge in a place of annular ring is provided with circular arc; The described seal lip place that is provided with circular arc is provided with the drift angle, seal lip place and seamed edge material generation flow field problem when avoiding high temperature mobility status occurs even produce the lip material, owing to there being the Material Flow space, can not reduce sealing effect yet, prevent the quality problems of piston rod external leakage.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow person skilled in the art scholar can understand content of the present invention and be implemented; can not limit protection scope of the present invention with this; all equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (3)
1. an axle with the combination envelope, comprises an annular ring, and it is characterized in that: in a place of annular ring, seamed edge is provided with circular arc; The described seal lip place that is provided with circular arc is provided with the drift angle.
2. axle according to claim 1 seals with combination, and it is characterized in that: the radius of described circular arc is 1mm～3mm.
3. axle according to claim 1 seals with combination, and it is characterized in that: described drift angle is 5 °～10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103681097A CN103123001A (en) | 2011-11-19 | 2011-11-19 | Combined seal for shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103681097A CN103123001A (en) | 2011-11-19 | 2011-11-19 | Combined seal for shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103123001A true CN103123001A (en) | 2013-05-29 |
Family
ID=48454081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103681097A Pending CN103123001A (en) | 2011-11-19 | 2011-11-19 | Combined seal for shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103123001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291648A (en) * | 2015-11-19 | 2018-07-17 | 日本华尔卡工业株式会社 | Containment member |
-
2011
- 2011-11-19 CN CN2011103681097A patent/CN103123001A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108291648A (en) * | 2015-11-19 | 2018-07-17 | 日本华尔卡工业株式会社 | Containment member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130529 |