CN203962549U - A kind of hydraulic cylinder piston assembly - Google Patents
A kind of hydraulic cylinder piston assembly Download PDFInfo
- Publication number
- CN203962549U CN203962549U CN201420260580.3U CN201420260580U CN203962549U CN 203962549 U CN203962549 U CN 203962549U CN 201420260580 U CN201420260580 U CN 201420260580U CN 203962549 U CN203962549 U CN 203962549U
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- China
- Prior art keywords
- hydraulic cylinder
- support ring
- piston rod
- utility
- model
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- Expired - Fee Related
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- 210000003722 extracellular fluid Anatomy 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The utility model relates to a kind of hydraulic cylinder piston assembly, comprises hydraulic cylinder and is arranged on the piston rod in hydraulic cylinder, in the inwall of described hydraulic cylinder, is embedded with support ring, in a side of support ring, is provided with black box; The bottom of described support ring offers several grooves, and corresponding piston rod is provided with spiral chute; Described spiral fluted cross-section lengths D is the twice of distance d between piston rod and support ring.The utility model is reasonable in design, owing to existing dynamic clearance between seal arrangement and piston rod, at seal arrangement, also exist other functional clearance that can play hydrodynamic effect around, when the pressure of interstitial fluid acquires a certain degree, interstitial fluid can flow back to by spiral chute, can effectively avoid revealing, 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 assembly.
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 assembly, can effectively avoid revealing, and improves sealability.
the utility model is to be achieved through the following technical solutions:
a hydraulic cylinder piston assembly, comprises hydraulic cylinder and is arranged on the piston rod in hydraulic cylinder, it is characterized in that:
in the inwall of described hydraulic cylinder, be embedded with support ring, in a side of support ring, be provided with black box;
the bottom of described support ring offers several grooves, and corresponding piston rod is provided with spiral chute.
as optimal technical scheme of the present utility model, described black box comprises seal ring and is arranged on the back-up ring of seal ring one side.
as optimal technical scheme of the present utility model, the quantity of described groove is five, and the distance between adjacent groove equates.
as optimal technical scheme of the present utility model, described spiral fluted cross-section lengths D is the twice of distance d between piston rod and support ring.
compared with prior art, the beneficial effects of the utility model are: the utility model is reasonable in design, owing to existing dynamic clearance between seal arrangement and piston rod, at seal arrangement, also exist other functional clearance that can play hydrodynamic effect around, when the pressure of interstitial fluid acquires a certain degree, interstitial fluid can flow back to by spiral chute, can effectively avoid revealing, and improves sealability.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model.
in figure: 1-hydraulic cylinder; 2-piston rod; 3-support ring; 4-groove; 5-spiral chute; 6-seal ring; 7-back-up 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 assembly, comprises hydraulic cylinder 1 and is arranged on the piston rod 2 in hydraulic cylinder 1, is embedded with support ring 3 in the inwall of described hydraulic cylinder 1, in a side of support ring 3, is provided with black box; The bottom of described support ring 3 offers several grooves 4, and corresponding piston rod 2 is provided with spiral chute 5.Owing to existing dynamic clearance between seal arrangement and piston rod 2, at seal arrangement, also exist other functional clearance that can play hydrodynamic effect around, when the pressure of interstitial fluid acquires a certain degree, interstitial fluid can flow back to by spiral chute, can effectively avoid revealing, improve sealability.
described black box comprises seal ring 6 and the back-up ring 7 that is arranged on seal ring 6 one sides, and black box is arranged in closure gasket groove, by seal ring and back-up ring, is used in combination, and improves sealing effect, prevents to leak.
the quantity of described groove 4 is five, and the distance between adjacent groove 4 equates; The cross-section lengths D of described spiral chute 5 is the twice of distance d between piston rod and support ring.
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 assembly, comprise hydraulic cylinder (1) and be arranged on the piston rod (2) in hydraulic cylinder (1), it is characterized in that: in the inwall of described hydraulic cylinder (1), be embedded with support ring (3), in a side of support ring (3), be provided with black box;
The bottom of described support ring (3) offers several grooves (4), and corresponding piston rod (2) is provided with spiral chute (5).
2. a kind of hydraulic cylinder piston assembly according to claim 1, is characterized in that: described black box comprises seal ring (6) and is arranged on the back-up ring (7) of seal ring (6) one sides.
3. a kind of hydraulic cylinder piston assembly according to claim 2, is characterized in that: the quantity of described groove (4) is five, and the distance between adjacent groove (4) equates.
4. a kind of hydraulic cylinder piston assembly according to claim 1, is characterized in that: the cross-section lengths D of described spiral chute (5) is the twice of distance d between piston rod and support ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260580.3U CN203962549U (en) | 2014-05-21 | 2014-05-21 | A kind of hydraulic cylinder piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420260580.3U CN203962549U (en) | 2014-05-21 | 2014-05-21 | A kind of hydraulic cylinder piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962549U true CN203962549U (en) | 2014-11-26 |
Family
ID=51923141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420260580.3U Expired - Fee Related CN203962549U (en) | 2014-05-21 | 2014-05-21 | A kind of hydraulic cylinder piston assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962549U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983921A (en) * | 2021-01-05 | 2021-06-18 | 威海中颐液压科技股份有限公司 | Spiral hydraulic swing motor |
-
2014
- 2014-05-21 CN CN201420260580.3U patent/CN203962549U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983921A (en) * | 2021-01-05 | 2021-06-18 | 威海中颐液压科技股份有限公司 | Spiral hydraulic swing motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUNAN HONGTAI EAST ELECTRICAL AND MECHANICAL EQUIPMENT CO., LTD. Assignor: Li Foshu Contract record no.: 2015430000124 Denomination of utility model: Piston assembly of hydraulic cylinder Granted publication date: 20141126 License type: Exclusive License Record date: 20150728 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |