CN203939979U - A kind of hydraulic cylinder piston link - Google Patents
A kind of hydraulic cylinder piston link Download PDFInfo
- Publication number
- CN203939979U CN203939979U CN201420260213.3U CN201420260213U CN203939979U CN 203939979 U CN203939979 U CN 203939979U CN 201420260213 U CN201420260213 U CN 201420260213U CN 203939979 U CN203939979 U CN 203939979U
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- seal ring
- piston
- annular groove
- utility
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of hydraulic cylinder piston link, comprise hydraulic cylinder and be arranged on the piston rod in hydraulic cylinder, on described piston rod, piston is installed, it is characterized in that: the outer surface of described piston offers two annular grooves, in described each annular groove, be provided with " U " RunddichtringO, described seal ring, for filling whole annular groove completely, leaves space, and the outer surface of described seal ring contacts with hydraulic cylinder.The in the situation that of reciprocating motion of the pistons, adopt the seal ring of two series connection, can effectively solve the problem of zero leakage and low friction, improve sealability.
Description
Technical field
the utility model relates to oil hydraulic cylinder and makes field, relates in particular to a kind of hydraulic cylinder piston link.
Background technique
oil hydraulic cylinder by hydraulic energy change mechanical energy into, the do straight reciprocating motion hydraulic actuator of (or oscillating motion).Its simple in structure, reliable operation.While realizing to-and-fro motion with it, can remove speed reducer from, and there is no drive gap, motion steadily, is therefore used widely in the hydraulic system of various machineries.The pressure reduction on oil hydraulic cylinder ouput force and piston effective area and both sides thereof is directly proportional; Oil hydraulic cylinder is comprised of cylinder barrel and cylinder cap, piston and piston rod, seal arrangement, damping device and venting gas appliance substantially.
hydraulic system, because sealing the bad leakage that causes, is a kind of most common failure of system, is also the key factor that affects the normal work of system.Have data to show, the mechanical equipment fault of 40% left and right is because seal failure causes.Meanwhile, along with the development of hydraulic system towards directions such as high pressure, large flows, the operating conditions of Sealing is also become to harsher, system leak, the damaged variety of issue that waits of Sealing is also more outstanding.
Model utility content
the utility model, in order to overcome deficiency of the prior art, provides a kind of hydraulic cylinder piston link, can effectively avoid revealing, and improves sealability.
the utility model is to be achieved through the following technical solutions:
a kind of hydraulic cylinder piston link, comprise hydraulic cylinder and be arranged on the piston rod in hydraulic cylinder, on described piston rod, piston is installed, it is characterized in that: the outer surface of described piston offers two annular grooves, in described each annular groove, be provided with seal ring, described seal ring, for filling whole annular groove completely, leaves space.
as optimal technical scheme of the present utility model, described seal ring is " U " RunddichtringO.
as optimal technical scheme of the present utility model, described two seal ring symmetries are arranged in annular groove.
as optimal technical scheme of the present utility model, the outer surface of described seal ring contacts with hydraulic cylinder.
the in the situation that of reciprocating motion of the pistons, sealing relies on the elastic fluid dynamic pressure effect in the fluid film between piston rod and the contact surface of sealing.Now, due to the existence of elastohydrodynamic lubrication, Sealing more or less can be with some oil films to go out, and sticks to piston rod surface.From sealing effect angle, oil film is thinner, and sealing effect can be better.But from the fretting wear of Sealing and working life angle, certain thickness film lubrication, can reduce frictional force and reduce wear, and improves the working life of Sealing.So rod seal problem, is actually sealing and fretting wear and lubricated contradiction, only uses a seal element, be difficult to reach the requirement of zero leakage and low friction simultaneously.The utility model adopts the seal ring of two series connection, can effectively solve the problem of zero leakage and low friction, improves sealability.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model.
in figure: 1-hydraulic cylinder; 2-piston rod; 3-piston; 4-annular groove; 5-seal ring.
Embodiment
in order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
described a kind of hydraulic cylinder piston link, comprise hydraulic cylinder 1 and be arranged on the piston rod 2 in hydraulic cylinder 1, on described piston rod 2, piston 3 is installed, the outer surface of described piston 3 offers two annular grooves 4, in described each annular groove 4, be provided with seal ring 5, described seal ring 5, for filling whole annular groove 4 completely, leaves space.Described seal ring 5 is " U " RunddichtringO, and described two seal ring 5 symmetries are arranged in annular groove 4, and the outer surface of described seal ring 5 contacts with hydraulic cylinder 1.The in the situation that of reciprocating motion of the pistons, adopt the seal ring 5 of two series connection, can effectively solve the problem of zero leakage and low friction, improve sealability.
the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a hydraulic cylinder piston link, comprise hydraulic cylinder (1) and be arranged on the piston rod (2) in hydraulic cylinder (1), piston (3) is installed on described piston rod (2), it is characterized in that: the outer surface of described piston (3) offers two annular grooves (4), in described each annular groove (4), be provided with seal ring (5), described seal ring (5), for filling whole annular groove (4) completely, leaves space.
2. a kind of hydraulic cylinder piston link according to claim 1, is characterized in that: described seal ring (5) is " U " RunddichtringO.
3. a kind of hydraulic cylinder piston link according to claim 2, is characterized in that: described two seal rings (5) symmetry is arranged in annular groove (4).
4. a kind of hydraulic cylinder piston link according to claim 1, is characterized in that: the outer surface of described seal ring (5) contacts with hydraulic cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260213.3U CN203939979U (en) | 2014-05-21 | 2014-05-21 | A kind of hydraulic cylinder piston link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260213.3U CN203939979U (en) | 2014-05-21 | 2014-05-21 | A kind of hydraulic cylinder piston link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939979U true CN203939979U (en) | 2014-11-12 |
Family
ID=51859293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260213.3U Expired - Fee Related CN203939979U (en) | 2014-05-21 | 2014-05-21 | A kind of hydraulic cylinder piston link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939979U (en) |
-
2014
- 2014-05-21 CN CN201420260213.3U patent/CN203939979U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20160521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |