CN205858847U - The cylinder static seal structure of quality of fit can be reduced - Google Patents
The cylinder static seal structure of quality of fit can be reduced Download PDFInfo
- Publication number
- CN205858847U CN205858847U CN201620793772.XU CN201620793772U CN205858847U CN 205858847 U CN205858847 U CN 205858847U CN 201620793772 U CN201620793772 U CN 201620793772U CN 205858847 U CN205858847 U CN 205858847U
- Authority
- CN
- China
- Prior art keywords
- ring
- fairlead
- static seal
- runddichtringo
- cylinder body
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
A kind of cylinder static seal structure reducing quality of fit, cylinder body (1) is arranged on the outside of fairlead (2), and the internal diameter of cylinder body coordinates with the crest clearance of fairlead, piston rod (3) is arranged on the bosom position of fairlead, outer radius at fairlead is provided with static seal groove (2.1), static seal groove coordinates back-up ring (5) and O RunddichtringO (4) are installed, described back-up ring is L-type, and back-up ring is set to two pieces, it is separately positioned on the left and right sides of O RunddichtringO, and the bending end of back-up ring is suitable with the external diameter of O RunddichtringO, the bending end length of described back-up ring and the equal diameters of O RunddichtringO；The other end of described back-up ring is suitable with the trench inner diameter of static seal groove.This utility model simple in construction, easy to use, while reducing cylinder body and fairlead quality of fit, the most do not affect the sealing property between cylinder body and fairlead, improve the oil cylinder life-span, improve product reliability simultaneously, reduce processing cost.
Description
Technical field
This utility model relates to a kind of cylinder static seal structure, a kind of cylinder static seal reducing quality of fit
Structure, belongs to hydraulic fittings technical field.
Background technology
Oil cylinder is the important executive component of hydraulic system, and the requirement in terms of the accuracy of manufacture and assembly precision is the highest, with
Time the static seal of oil cylinder is had high voltage bearing requirement；During assembling, its critical piece cylinder body and fairlead break down
Many phenomenons are the face burns that is fitted to each other, thus cause the static seal of oil cylinder to damage, and affect its service life.
Summary of the invention
The problem existed for above-mentioned prior art, this utility model provides a kind of oil cylinder reducing quality of fit quiet close
Seal structure, simple in construction, easy to use, while reducing cylinder body and fairlead quality of fit, the most do not affect cylinder body and fairlead
Between sealing property, improve the oil cylinder life-span, improve product reliability simultaneously, reduce and add cost.
To achieve these goals, this utility model provides a kind of cylinder static seal structure reducing quality of fit, bag
Including cylinder body and fairlead, cylinder body is arranged on the outside of fairlead, and the internal diameter of cylinder body coordinates with the crest clearance of fairlead, piston
Bar is arranged on the bosom position of fairlead, and the outer radius at fairlead is provided with static seal groove, in static seal groove
Coordinating and be provided with back-up ring and O RunddichtringO, described back-up ring is L-type, and back-up ring is set to two pieces, is separately positioned on O type and seals
The left and right sides of circle, and the bending end of back-up ring is suitable with the external diameter of O RunddichtringO, the bending end length of described back-up ring and O
The equal diameters of RunddichtringO；The other end of described back-up ring is suitable with the trench inner diameter of static seal groove.
Back-up ring uses politef material.
O RunddichtringO uses polyformaldehyde material.
Compared with prior art, this utility model is placed on the static seal of fairlead by back-up ring, O RunddichtringO being coordinated
The existing sealing function of groove interior-excess, the effect one of back-up ring be used to prevent O RunddichtringO by hydraulic oil impact extrusion, two be used to every
From cylinder body and fairlead, it is ensured that fairlead and the assembly precision of cylinder body, preventing assembling process burn phenomenon, back-up ring also simultaneously works as
Guide effect, prevents owing to mismachining tolerance causes pulling or burning of sliding surface, protects the seal area of static seal, structure letter
Single, easy to use, while reducing cylinder body and fairlead quality of fit, the most do not affect the sealing between cylinder body and fairlead
Can, improve the oil cylinder life-span, improve product reliability simultaneously, reduce and add cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged diagram that Fig. 1 guide ring and O RunddichtringO coordinate installation.
In figure: 1, cylinder body, 2, fairlead, 2.1, static seal groove, 3, piston rod, 4, O RunddichtringO, 5, back-up ring.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of cylinder static seal structure reducing quality of fit, including cylinder body 1 and fairlead 2,
Cylinder body 1 is arranged on the outside of fairlead 2, and the internal diameter of cylinder body 1 coordinates with the crest clearance of fairlead 2, and piston rod 3 is arranged on leads
To the bosom position of set 2, the outer radius at fairlead 2 is provided with static seal groove 2.1, joins in static seal groove 2.1
Conjunction is provided with back-up ring 5 and O RunddichtringO 4, and circle 5 and O RunddichtringOs 4 coordinate with cylinder body 1, play the fluid of closing oil cylinder cavity
Left and right, prevents the fluid in oil cylinder cavity from flowing out；Described back-up ring 5 is L-type, and back-up ring 5 is set to two pieces, is separately positioned on O
The left and right sides of RunddichtringO 4, like this support effect is good, and adds guiding area, therefore O RunddichtringO 4 assembled
Cheng Buyi crushes injury and burns, and the bending end of back-up ring 5 is suitable with the external diameter of O RunddichtringO 4, the bending of described back-up ring 5
End length and the equal diameters of O RunddichtringO 4；The other end of described back-up ring 5 is fitted mutually with the trench inner diameter of static seal groove 2.1
Joining, back-up ring 5 is used for preventing O RunddichtringO by hydraulic oil impact extrusion；Can also be used to isolate cylinder body and fairlead, it is ensured that guide
Set and the assembly precision of cylinder body, prevent assembling process burn phenomenon.
Owing to physics and the chemical property of politef material are the most stable and soft, flexible, therefore back-up ring 5 uses
Politef material.
Due to polyformaldehyde material, support effect is good, and polyformaldehyde material chance water is indeformable, and size is highly stable, and poly-
Formaldehyde material inherently has support guide effect, and adds guiding area, therefore O RunddichtringO 4 uses polyformaldehyde material.
Claims (3)
1. can reduce a cylinder static seal structure for quality of fit, including cylinder body (1) and fairlead (2), it is characterised in that cylinder
Body (1) is arranged on the outside of fairlead (2), and the internal diameter of cylinder body (1) coordinates with the crest clearance of fairlead (2), piston rod (3)
Being arranged on the bosom position of fairlead (2), the outer radius at fairlead (2) is provided with static seal groove (2.1), quiet close
Coordinating in envelope groove (2.1) and be provided with back-up ring (5) and O RunddichtringO (4), described back-up ring (5) is L-type, and back-up ring (5) is arranged
For two pieces, it is separately positioned on the left and right sides of O RunddichtringO (4), and the external diameter of the bending end of back-up ring (5) and O RunddichtringO (4)
Suitable, the bending end length of described back-up ring (5) and the equal diameters of O RunddichtringO (4)；Another of described back-up ring (5)
Hold suitable with the trench inner diameter of static seal groove (2.1).
The cylinder static seal structure reducing quality of fit the most according to claim 1, it is characterised in that back-up ring (5) is adopted
Use politef material.
The cylinder static seal structure reducing quality of fit the most according to claim 1 and 2, it is characterised in that described O
RunddichtringO (4) uses polyformaldehyde material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793772.XU CN205858847U (en) | 2016-07-26 | 2016-07-26 | The cylinder static seal structure of quality of fit can be reduced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620793772.XU CN205858847U (en) | 2016-07-26 | 2016-07-26 | The cylinder static seal structure of quality of fit can be reduced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858847U true CN205858847U (en) | 2017-01-04 |
Family
ID=57648182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620793772.XU Expired - Fee Related CN205858847U (en) | 2016-07-26 | 2016-07-26 | The cylinder static seal structure of quality of fit can be reduced |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858847U (en) |
-
2016
- 2016-07-26 CN CN201620793772.XU patent/CN205858847U/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: 20170104 Termination date: 20170726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |