CN105889516A - Sealing device of hydraulic actuator cylinder - Google Patents
Sealing device of hydraulic actuator cylinder Download PDFInfo
- Publication number
- CN105889516A CN105889516A CN201510038311.1A CN201510038311A CN105889516A CN 105889516 A CN105889516 A CN 105889516A CN 201510038311 A CN201510038311 A CN 201510038311A CN 105889516 A CN105889516 A CN 105889516A
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- China
- Prior art keywords
- rubber ring
- piston rod
- circle
- politef
- hydraulic actuator
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Abstract
The invention discloses a sealing device of a hydraulic actuator cylinder. The sealing device of the hydraulic actuator cylinder comprises an actuator cylinder body, a piston rod, a rubber ring and a Teflon sealing ring, wherein the rubber ring has good elasticity and certain oil resistance, and the rubber ring is installed inside an actuator cylinder annular slot and does not make contact with hydraulic oil directly; the Teflon sealing ring has good oil resistance and abrasion resistance, and further has the excellent self-lubrication property, the Teflon sealing ring has elasticity which is very small, the sealing effect of the Teflon sealing ring is poor, and the Teflon sealing ring is installed on the outside the actuator cylinder annular slot and makes contact with the piston rod; and in the reciprocating motion of the piston rod, through the action of elasticity of the rubber ring, the Teflon sealing ring is tensioned to be tightly attached to the surface of the piston rod, and a good sealing effect is achieved.
Description
Technical field
The present invention relates to a kind of hydraulic packing technology, refer more particularly to the Sealing Technology of a kind of hydraulic actuator.
Background technology
Currently, hydraulic system in engineering seals is all to use rubber to obturage sealing, in hydraulic system
Pressurized strut for, owing to pressurized strut moves back and forth not stopping, use seal with elastometic washer for a long time, hold
Easily make rubber ring be worn, need repairing and change.The hydraulic pressure especially used in aerospace product
Pressurized strut, uses frequency high, moves back and forth speed fast, although the rubber performance of use is higher than civilian, but its
Service life or limited, the oil leakage fault that the most also can cause because rubber seal damages occurs, and
Decompose maintenance or replacement cost is the highest.
Summary of the invention
It is an object of the invention to as solving above-mentioned weak point, wear-resisting to sealing structure for meeting hydraulic actuator
With the requirement of oil resistivity, and design the sealing device of a kind of new hydraulic actuator.
(1) to solve the technical problem that
The present invention needs the sealing effectiveness solving both to ensure hydraulic actuator, considers manufacturability and economy again,
It is prone to the assembling on product simultaneously.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention is to be achieved through the following technical solutions: a kind of hydraulic pressure is made
The sealing device of dynamic cylinder includes that start is simplified, circle obturaged by piston rod, O-shaped rubber ring, politef.Making
The internal face of dynamic cylinder has a cannelure, first installs 0 type rubber ring, then O type rubber in cannelure
The inner face of cushion rubber is installed a politef and is obturaged circle, is obturaged by piston rod after enclosing again through politef
Pressurized strut two ends are installed.
Described politef circle of obturaging is a rectangle ring, and four rounding of angle, radius r is 0.1-0.5mm.
Described O-shaped rubber ring has preferable elasticity and has certain oil resistance, is arranged on start
Cylinder cannelure interior, be not directly contacted with hydraulic oil.Politef obturage circle have preferable oil resistance and
Wearability, and there is good self lubricity, although flexible, but elasticity is less, and sealing effectiveness is bad,
Be installed in the cannelure that start is simplified in O-shaped rubber ring with on the contact surface of piston rod.At piston rod
Reciprocating motion in, use the elastic reaction of O-shaped rubber ring, compress politef circle of obturaging and be close to piston
Bar surface, plays preferable sealing function.
The invention has the beneficial effects as follows:
Compared with existing structure, manufacturability and economy are without significant change, but significantly improve movable sealing
Functional reliability, and possess similar structures promote feature.
1. the potted component of pressurized strut adds the more preferable polytetrafluoroethylmaterial material of wearability as reciprocating
Work surface, extends the potted component life-span.
2. utilize elastomeric material to add the elasticity of potted component, compress politef circle of obturaging and be close to piston
Bar surface, it is ensured that sealing effectiveness.
3 avoid O type rubber seal directly to contact with hydraulic oil, extend the O type rubber seal life-span.
Accompanying drawing explanation
Fig. 1 pressurized strut assembling schematic diagram,
1-O type rubber seal 2-politef is obturaged and is enclosed 3-start simplified 4-piston rod
Detailed description of the invention
Below by detailed description of the invention, the present invention is further described.Hereinafter implement the most illustrative,
It not determinate, it is impossible to limit protection scope of the present invention with this.
As shown in Figure 1, the sealing device of a kind of hydraulic actuator includes that start is simplified 3, piston rod 4, O type
Rubber seal 1, politef are obturaged circle 2.The internal face of start simplified 3 has a cannelure,
First mounting O-shaped rubber ring 1 in cannelure, then the inner face in O-shaped rubber ring 1 installs a polytetrafluoroethyl-ne
Alkene is obturaged circle 2, installs pressurized strut two ends again after piston rod 4 is obturaged circle 2 through politef.
Described politef is obturaged and enclosed 2 is a rectangle ring, and four rounding of angle, radius r is 0.1-
0.5mm。
Described O-shaped rubber ring 1 has good elasticity and has certain oil resistance, is arranged on work
In the cannelure of dynamic simplified 3, it is not directly contacted with hydraulic oil.Politef obturage circle 2 have the most resistance to
Oiliness energy and wearability, and there is good self lubricity, although flexible, but elasticity is less, seals
Effect is bad, is installed in the cannelure of start simplified 3 in O-shaped rubber ring (1) and piston rod (4)
Contact surface on.In the reciprocating motion of piston rod 4, use the elastic reaction of O-shaped rubber ring 1, compress
Politef is obturaged and is enclosed 2 surfaces being close to piston rod 4, plays preferable sealing function.
Claims (3)
1. the sealing device of a hydraulic actuator, it is characterised in that: include start cylinder (3), piston rod (4),
O-shaped rubber ring (1), politef are obturaged circle (2)；Internal face at start cylinder (3) has one
Cannelure, first mounting O-shaped rubber ring (1) in cannelure, then the inner face in O-shaped rubber ring (1) is pacified
Fill a politef to obturage circle (2), after piston rod (4) is obturaged circle (2) through politef
Pressurized strut two ends are installed again.
The sealing device of a kind of hydraulic actuator the most according to claim 1, it is characterised in that: polytetrafluoroethyl-ne
Alkene circle (2) of obturaging is a rectangle ring, and four rounding of angle, radius r is 0.1-0.5mm.
The sealing device of a kind of hydraulic actuator the most according to claim 1, it is characterised in that: due to O type
Rubber ring (1) is arranged in the cannelure of start cylinder (3), and politef circle (2) of obturaging is arranged on
In the cannelure of dynamic cylinder (3) in O-shaped rubber ring (1) and on the contact surface of piston rod (4)；At piston
In the reciprocating motion of bar (4), use the elastic reaction of O-shaped rubber ring (1), compress politef envelope
Tight circle (2) is close to the surface of piston rod (4), plays preferable sealing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038311.1A CN105889516A (en) | 2015-01-22 | 2015-01-22 | Sealing device of hydraulic actuator cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038311.1A CN105889516A (en) | 2015-01-22 | 2015-01-22 | Sealing device of hydraulic actuator cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889516A true CN105889516A (en) | 2016-08-24 |
Family
ID=56999696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510038311.1A Pending CN105889516A (en) | 2015-01-22 | 2015-01-22 | Sealing device of hydraulic actuator cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889516A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223858A (en) * | 2017-08-08 | 2018-06-29 | 河南航天液压气动技术有限公司 | Valve sealing structure, valve and the low pressure valve using the sealing structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005265118A (en) * | 2004-03-19 | 2005-09-29 | Ntn Corp | Seal device for rotational hydraulic unit |
| CN2793457Y (en) * | 2005-02-16 | 2006-07-05 | 徐州车氏密封有限公司 | T-shaped two-way rotary assembled sealing ring |
| CN102434672A (en) * | 2011-10-31 | 2012-05-02 | 湖南特力液压有限公司 | Hydraulic cylinder sealing structure |
| CN102767624A (en) * | 2012-07-20 | 2012-11-07 | 石家庄中煤装备制造股份有限公司 | Combined sealing part and kinematical sealing structure |
| CN102959279A (en) * | 2010-08-06 | 2013-03-06 | 爱信艾达株式会社 | Seal structure for continuously-variable transmission device |
| CN103062407A (en) * | 2012-12-29 | 2013-04-24 | 太仓市明宇密封件有限公司 | Square coaxial sealing element |
| CN203115110U (en) * | 2012-11-14 | 2013-08-07 | 中国航空工业第六一八研究所 | Combined sealing structure of actuator piston rod |
| CN204512430U (en) * | 2015-01-22 | 2015-07-29 | 贵州航空发动机研究所 | A kind of seal arrangement of hydraulic actuator |
-
2015
- 2015-01-22 CN CN201510038311.1A patent/CN105889516A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005265118A (en) * | 2004-03-19 | 2005-09-29 | Ntn Corp | Seal device for rotational hydraulic unit |
| CN2793457Y (en) * | 2005-02-16 | 2006-07-05 | 徐州车氏密封有限公司 | T-shaped two-way rotary assembled sealing ring |
| CN102959279A (en) * | 2010-08-06 | 2013-03-06 | 爱信艾达株式会社 | Seal structure for continuously-variable transmission device |
| CN102434672A (en) * | 2011-10-31 | 2012-05-02 | 湖南特力液压有限公司 | Hydraulic cylinder sealing structure |
| CN102767624A (en) * | 2012-07-20 | 2012-11-07 | 石家庄中煤装备制造股份有限公司 | Combined sealing part and kinematical sealing structure |
| CN203115110U (en) * | 2012-11-14 | 2013-08-07 | 中国航空工业第六一八研究所 | Combined sealing structure of actuator piston rod |
| CN103062407A (en) * | 2012-12-29 | 2013-04-24 | 太仓市明宇密封件有限公司 | Square coaxial sealing element |
| CN204512430U (en) * | 2015-01-22 | 2015-07-29 | 贵州航空发动机研究所 | A kind of seal arrangement of hydraulic actuator |
Non-Patent Citations (1)
| Title |
|---|
| 王益群，高殿荣主编: "《液压工程师技术手册》", 31 March 2012 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223858A (en) * | 2017-08-08 | 2018-06-29 | 河南航天液压气动技术有限公司 | Valve sealing structure, valve and the low pressure valve using the sealing structure |
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Application publication date: 20160824 |
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| WD01 | Invention patent application deemed withdrawn after publication |