CN103851188A - Hydraulic cylinder sealing part - Google Patents
Hydraulic cylinder sealing part Download PDFInfo
- Publication number
- CN103851188A CN103851188A CN201210509782.2A CN201210509782A CN103851188A CN 103851188 A CN103851188 A CN 103851188A CN 201210509782 A CN201210509782 A CN 201210509782A CN 103851188 A CN103851188 A CN 103851188A
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- China
- Prior art keywords
- hydraulic cylinder
- sealing
- flange
- piston
- sealing part
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- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to a hydraulic cylinder sealing part. The hydraulic cylinder sealing part comprises sealing rings between a hydraulic cylinder body and a piston and is characterized in that the outer peripheral wall of each sealing ring is provided with a first flange and second flanges on two sides of the first flange, the inner peripheral wall of each sealing ring is provided with a groove, each groove is closed with the outer wall of the piston to form a first cavity, the piston is provided with oil ways through which an inner cavity of the cylinder body is communicated with the first cavities. The hydraulic cylinder sealing part is simple in structure and has the advantages of effectiveness in sealing and convenience in demounting as compared with a traditional hydraulic cylinder sealing part. Further, the hydraulic cylinder sealing part is not only good in sealing performance under low pressure but also better in sealing performance as the contact areas of the flanges of the sealing rings and the cylinder body are widened along with increase of operation pressure.
Description
Technical field
The present invention relates to hydraulic equipment field, particularly hydraulic cylinder sealing element.
Background technique
Sealing is to solve one of effective means of hydraulic system leakage problem.In the time that the sealing of hydraulic system is bad, can be because of external leakage befouling environment; Also can cause air to enter hydraulic system and affect the service behaviour of oil hydraulic pump and the stationarity of hydraulic actuator motion; In the time that internal leakage is serious, can cause the too low and oil liquid temperature of system volume efficiency to rise too high, so that system cisco unity malfunction.Along with the progress of technology and the raising of equipment performance, hydraulic system is more and more higher to the requirement of sealing, and the independent use of traditional seal ring can not well be satisfied the demand.
Summary of the invention
The applicant, for the above-mentioned shortcoming of conventional cylinder Sealing, studies and improves, and a kind of hydraulic cylinder sealing element is provided, and it has the feature of simple in structure, convenient disassembly, good sealing effect.
In order to address the above problem, the present invention adopts following scheme:
A kind of hydraulic cylinder sealing element, comprise the seal ring between hydraulic cylinder and piston, it is characterized in that: the outer ring perisporium of described seal ring has the first flange and the second flange, described the second flange is positioned at the both sides of described the first flange, the inner ring perisporium of described seal ring has groove, described groove seals into the first cavity with piston outer wall, on described piston, has oil duct, and described oil duct is communicated with inner chamber of cylinder block and described the first cavity.
Further technological scheme is:
Described seal ring comprises two.
Technique effect of the present invention is:
The present invention is simple in structure, more traditional hydraulic seal, and it has good sealing effect, the advantage of convenient disassembly, the present invention not only has good sealability in the time of low pressure, and along with the raising of working pressure, the flange of seal ring and the area of contact of cylinder body increase, and sealability is better.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
See Fig. 1, the present invention includes the seal ring 5 between hydraulic cylinder 6 and piston 1, the outer ring perisporium of seal ring 5 has the first flange 8, the second flange 7 and the second flange 9, the second flange 7 and the second flange 9 are positioned at the both sides of the first flange 8, the inner ring perisporium of seal ring 5 has groove 4, groove 4 becomes the first cavity 12 with piston 1 closed front, has oil duct 3 on piston 1, and oil duct 3 is communicated with inner chamber of cylinder block 2 and the first cavity 12.Between piston 1 of the present invention and cylinder body 6, go back the seal ring 10 of joint and seal circle 5 same structures, on piston 1, there is the oil duct 11 being communicated with cylinder body 6 inner chambers.
When the present invention works, when fluid enters the first cavity 12 from inner chamber of cylinder block 2 by oil duct 3, it is more tight that oil liquid pressure makes the second flange 7 of seal ring and the second flange 9 contact with cylinder body 6, and the first flange 8 is contacted with cylinder body 6, therefore along with the increase of oil pressure, the sealing effect of seal ring 5 is better; Same in the time that fluid enters from oil duct 11, oil pressure has strengthened the sealing effect of seal ring 10.
Claims (2)
1. a hydraulic cylinder sealing element, comprise the seal ring between hydraulic cylinder and piston, it is characterized in that: the outer ring perisporium of described seal ring has the first flange and the second flange, described the second flange is positioned at the both sides of described the first flange, the inner ring perisporium of described seal ring has groove, described groove seals into the first cavity with piston outer wall, on described piston, has oil duct, and described oil duct is communicated with inner chamber of cylinder block and described the first cavity.
2. according to hydraulic cylinder sealing element claimed in claim 1, it is characterized in that: described seal ring comprises two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509782.2A CN103851188A (en) | 2012-11-30 | 2012-11-30 | Hydraulic cylinder sealing part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210509782.2A CN103851188A (en) | 2012-11-30 | 2012-11-30 | Hydraulic cylinder sealing part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103851188A true CN103851188A (en) | 2014-06-11 |
Family
ID=50859182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210509782.2A Pending CN103851188A (en) | 2012-11-30 | 2012-11-30 | Hydraulic cylinder sealing part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939771A (en) * | 2017-11-20 | 2018-04-20 | 武汉科技大学 | A kind of linear oil cylinder with self-sealing function |
| CN109281891A (en) * | 2018-11-09 | 2019-01-29 | 湖南师范大学 | A hydraulic cylinder piston sealing device with variable sealing gap and hydraulic cylinder |
-
2012
- 2012-11-30 CN CN201210509782.2A patent/CN103851188A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939771A (en) * | 2017-11-20 | 2018-04-20 | 武汉科技大学 | A kind of linear oil cylinder with self-sealing function |
| CN109281891A (en) * | 2018-11-09 | 2019-01-29 | 湖南师范大学 | A hydraulic cylinder piston sealing device with variable sealing gap and hydraulic cylinder |
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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: 20140611 |