CN208982653U - A kind of guide sleeve compound sealing structure - Google Patents
A kind of guide sleeve compound sealing structure Download PDFInfo
- Publication number
- CN208982653U CN208982653U CN201821010274.9U CN201821010274U CN208982653U CN 208982653 U CN208982653 U CN 208982653U CN 201821010274 U CN201821010274 U CN 201821010274U CN 208982653 U CN208982653 U CN 208982653U
- Authority
- CN
- China
- Prior art keywords
- sealing
- guide sleeve
- hydraulic cylinder
- ring seal
- slip
- 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 discloses a kind of guide sleeve compound sealing structures, for the sealing between piston rod and guide sleeve.The sealing being arranged between the hydraulic cylinder guide sleeve inner wall on the lateral wall of the piston rod includes slip-ring seal and combined sealing structure, the slip-ring seal is first of sealing, it is placed on pressure medium side, and by the combined sealing structure mounted in thereafter.A kind of guide sleeve composite seal structure disclosed by the utility model, wherein combination sealing is by nylon bush, O-ring seal and the Yx sealing ring of two superpositions composition, this structure more meets domestic manufacturing technology level on material and technique, while guaranteeing the premise of sealing performance, it is easily installed disassembly, reduce sealing cost, increase by one of bearing ring seal before combined sealing structure simultaneously, it is high pressure resistant using slip-ring seal, the advantage that pressure maintaining performance is good and frictional resistance is small, the pressure-resistant degree of hydraulic cylinder can be improved well, and effectively extend the service life of hydraulic cylinder.
Description
Technical field
The utility model relates to a kind of sealing structure, in particular to a kind of guide sleeve composite seal structure is main to apply
In heavy-duty machineries such as cranes.
Background technique
Hydraulic cylinder is the hydraulic actuator that hydraulic energy is changed into mechanical energy.When realizing reciprocating motion, it can be exempted from it
Deceleration device is removed, and does not have drive gap, movement is steady, therefore is used widely in the hydraulic system of various machinery.
In hydraulic cylinder key building block, can the quality of sealing device be to influence the even entire hydraulic system of hydraulic cylinder work normally
One of key.Therefore hydraulic cylinder sealing device rationally design and have important vital effect.Currently, due to state
The restriction of inner seal liner industrial manufacturing level applies the combination sealing on engineering heavy-duty machinery hydraulic cylinder to mostly use import close greatly
Sealing to the buying of accessory, is repaired etc. and to cause big inconvenience, while cost is also very high.Therefore, the utility model mentions
A kind of guide sleeve composite seal structure out, this structure more meet domestic manufacturing technology level on material and technique, simultaneously
It ensure that the sealing performance between hydraulic cylinder guide sleeve and piston rod.
Utility model content
To achieve the above object, technical solution adopted in the utility model is: a kind of guide sleeve composite seal structure,
Including hydraulic cylinder guide sleeve and piston rod, and the piston rod is mounted in the hydraulic cylinder guide sleeve, in the piston rod
Lateral wall on the sealing that is arranged between the hydraulic cylinder guide sleeve inner wall include slip-ring seal and combination sealing coil structures,
The slip-ring seal is first of sealing, is located at hydraulic cylinder high pressure one end, and the combination sealing coil structures are second
Sealing, is located at hydraulic cylinder low pressure one end, and the combination sealing coil structures are sealed by nylon bush, O-ring seal and Yx type
Circle composition, the slip-ring seal are this high voltage bearing spy's envelope, and compound seal knot is collectively formed with the combination sealing coil structures
Structure.
The beneficial effects of the utility model are: this structure uses domestic sealing element, structure is simple, more meets domestic manufacture
Technological level is easily installed disassembly, is effectively reduced sealing cost while guaranteeing the premise of sealing performance, meanwhile, it utilizes
The advantage that slip-ring seal is high pressure resistant, pressure maintaining performance is good and frictional resistance is small can improve the pressure-resistant degree of hydraulic cylinder well,
Buffer function is played simultaneously, and effectively extends the service life of hydraulic cylinder.
Detailed description of the invention
Fig. 1 is that the utility model proposes a kind of cross-sectional views of hydraulic cylinder compound sealing structure.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
The utility model includes slip-ring seal and combined sealing structure, and the slip-ring seal is first of sealing, will
It is placed in pressure medium side, and by the combined sealing structure mounted in thereafter, the combined sealing structure is by nylon bush
4, O-ring seal 3 and Yx type sealing ring 5,6 form, wherein the O-ring 3 of nylon bush end be mainly used for preventing hydraulic oil from
Contact of the bushing with guide sleeve faces out leakage, and there are two Yx type sealing rings 5 and 6 for middle part arrangement, and hydraulic cylinder can be effectively prevented
The leakage of rod chamber hydraulic oil, while the wearability of nylon bush, anti-corrosive properties are preferable, and have certain self-lubricating property, can
To adapt to the severe operating condition of the engineering machinery such as hoisting machinery.Increase by one of bearing ring seal, the cunning before combined sealing structure
Ring seal is this spy's envelope, and stairstepping sealing element and O-ring seal made of filled polytetrafluoroethylene form, groove processing letter
It is single, it can work under dry conditions, can have excellent buffer function to hydraulic shock using this spy's envelope, have simultaneously
Good high pressure resistant and excellent anti-friction property.
Claims (1)
1. a kind of guide sleeve composite seal structure, it is characterised in that: including hydraulic cylinder guide sleeve (1) and piston rod (7), and
The piston rod (7) is mounted in the hydraulic cylinder guide sleeve (1), be arranged on the lateral wall of the piston rod (7) with institute
The sealing stated between hydraulic cylinder guide sleeve (1) inner wall includes slip-ring seal (2) and combination sealing coil structures, and the sliding ring type is close
Envelope is first of sealing, is located at hydraulic cylinder high pressure one end, and the combination sealing coil structures are second sealing, is located at described
Hydraulic cylinder low pressure one end, the combination sealing coil structures include O-ring (3), nylon bush (4) and the Yx type sealing being arranged side by side
It encloses (5) (6), the slip-ring seal (2) is this high voltage bearing spy's envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821010274.9U CN208982653U (en) | 2018-06-28 | 2018-06-28 | A kind of guide sleeve compound sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821010274.9U CN208982653U (en) | 2018-06-28 | 2018-06-28 | A kind of guide sleeve compound sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208982653U true CN208982653U (en) | 2019-06-14 |
Family
ID=66779534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821010274.9U Expired - Fee Related CN208982653U (en) | 2018-06-28 | 2018-06-28 | A kind of guide sleeve compound sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208982653U (en) |
-
2018
- 2018-06-28 CN CN201821010274.9U patent/CN208982653U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 Termination date: 20200628 |