CN102278468A - Sealed hydraulic cylinder - Google Patents
Sealed hydraulic cylinder Download PDFInfo
- Publication number
- CN102278468A CN102278468A CN2011101930678A CN201110193067A CN102278468A CN 102278468 A CN102278468 A CN 102278468A CN 2011101930678 A CN2011101930678 A CN 2011101930678A CN 201110193067 A CN201110193067 A CN 201110193067A CN 102278468 A CN102278468 A CN 102278468A
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- Prior art keywords
- piston
- matrix
- sealing
- groove
- sealing ring
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- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a sealed hydraulic cylinder and relates to the technical field of hydraulic cylinders. The sealed hydraulic cylinder comprises a cylinder barrel, a piston and a piston rod, wherein a sealing piece mounting groove is formed at the periphery of the piston; a combined sealing ring is arranged inside the sealing piece mounting groove and comprises a matrix sealing ring, a star-shaped ring and two O-shaped rings; a groove is radially formed at the periphery of the matrix sealing ring; the star-shaped ring is arranged in the groove; and the two O-shaped rings are arranged between the matrix sealing ring and the piston. When the combined sealing ring is arranged inside the groove, the two O-shaped rings are compressed to apply force to the matrix sealing ring, so that the matrix sealing ring and the star-shaped ring are tightly adhered to an inner wall of the cylinder barrel to achieve a sealing effect. When the operating pressure of a system rises, pressure acting on the sealing piece is converted into radial pressure, and the internal leakage of the system is hardly present.
Description
Technical field
The present invention relates to the technical field of oil hydraulic cylinder.
Background technique
Existing oil hydraulic cylinder mainly comprises cylinder barrel, rear end cover, piston, piston rod and Sealing, because Sealing unreasonable, makes the poor sealing performance of oil cylinder.
Summary of the invention
The objective of the invention is provides a kind of sealing fluid cylinder pressure in order to overcome the deficiencies in the prior art, makes its good sealing effect.
The object of the present invention is achieved like this: the sealing fluid cylinder pressure, comprise cylinder barrel, piston and piston rod, the periphery of described piston is provided with the Sealing mounting groove, in the described Sealing mounting groove combined seal ring is set, combined seal ring comprises a matrix seal ring, a star circle and two O shape circles, the outer periphery of matrix seal ring is provided with groove, and the star circle is arranged in the groove, and two O shape circles are separately positioned between matrix seal ring and the piston.
The cross section of combined seal ring is designed specially for satisfying sound attitude fluid system, one is the seal ring (groove shaped concavity circle is set on the matrix seal ring) of matrix with the PTFE material, elastic ring i.e. a star circle, two O shape circles are formed, the spill circle is with the combination of star circle, and as the primary seal of this black box, and two O shape circles are as time sealing, provide necessary pretightening force to primary seal simultaneously, sealing circle no matter sound attitude liquid or gas all has fabulous sealing effect.In the time of in combined seal ring is installed in groove, two O shape circles will the application of force be given the matrix seal ring because be compressed, and make matrix seal ring and star circle be close to inner wall of cylinder and play sealing effect.When the working pressure of system raise, the pressure that acts on the Sealing was converted into radial pressure, and letting out almost in the system does not have.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is an A portion enlarged view among Fig. 1.
Embodiment
As shown in Figure 1, 2, be the sealing fluid cylinder pressure, comprise cylinder barrel 1, piston 3 and piston rod 2, the periphery of piston 3 is provided with Sealing mounting groove 5, combined seal ring 4 is set in the Sealing mounting groove 5, and combined seal ring 4 comprises a matrix seal ring 4-1, a star circle 4-2 and two O shape circle 4-4, and the outer periphery of matrix seal ring 4-1 is provided with groove 4-3, star circle 4-2 is arranged in the groove 4-3, and two O shape circle 4-4 are separately positioned between matrix seal ring 4-1 and the piston 3.
Claims (1)
1. sealing fluid cylinder pressure, comprise cylinder barrel, piston and piston rod, the periphery of described piston is provided with the Sealing mounting groove, it is characterized in that: in the described Sealing mounting groove combined seal ring is set, combined seal ring comprises a matrix seal ring, a star circle and two O shape circles, the outer periphery of matrix seal ring is provided with groove, and the star circle is arranged in the groove, and two O shape circles are separately positioned between matrix seal ring and the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101930678A CN102278468A (en) | 2011-07-12 | 2011-07-12 | Sealed hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101930678A CN102278468A (en) | 2011-07-12 | 2011-07-12 | Sealed hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278468A true CN102278468A (en) | 2011-12-14 |
Family
ID=45104091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101930678A Pending CN102278468A (en) | 2011-07-12 | 2011-07-12 | Sealed hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102278468A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498918A (en) * | 2013-09-29 | 2014-01-08 | 苏州好特斯模具有限公司 | High-temperature cylinder sealing assembly |
| CN104832494A (en) * | 2015-05-18 | 2015-08-12 | 重庆青山工业有限责任公司 | Piston ring sealing structure of circular double-acting cylinder |
| CN105179377A (en) * | 2015-09-21 | 2015-12-23 | 济南大学 | Hydraulic cylinder piston sealing device with deformation preventing and leaked oil storing functions |
| CN106439004A (en) * | 2016-08-27 | 2017-02-22 | 常州市耀华仪器有限公司 | Abrasion-resistant piston ring for surveying and mapping instrument |
-
2011
- 2011-07-12 CN CN2011101930678A patent/CN102278468A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498918A (en) * | 2013-09-29 | 2014-01-08 | 苏州好特斯模具有限公司 | High-temperature cylinder sealing assembly |
| CN104832494A (en) * | 2015-05-18 | 2015-08-12 | 重庆青山工业有限责任公司 | Piston ring sealing structure of circular double-acting cylinder |
| CN105179377A (en) * | 2015-09-21 | 2015-12-23 | 济南大学 | Hydraulic cylinder piston sealing device with deformation preventing and leaked oil storing functions |
| CN106439004A (en) * | 2016-08-27 | 2017-02-22 | 常州市耀华仪器有限公司 | Abrasion-resistant piston ring for surveying and mapping instrument |
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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: 20111214 |