CN205780032U - A kind of modified model oil cylinder cylinder cap seals structure - Google Patents
A kind of modified model oil cylinder cylinder cap seals structure Download PDFInfo
- Publication number
- CN205780032U CN205780032U CN201620644544.6U CN201620644544U CN205780032U CN 205780032 U CN205780032 U CN 205780032U CN 201620644544 U CN201620644544 U CN 201620644544U CN 205780032 U CN205780032 U CN 205780032U
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- CN
- China
- Prior art keywords
- cylinder
- fairlead
- cylinder cap
- tight fixed
- screw
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Abstract
The utility model discloses a kind of modified model oil cylinder cylinder cap and seal structure, including cylinder barrel, piston rod, cylinder cap, fairlead, fairlead arranges a lip bulge loop, is provided with radial seal and Nei Ka back-up ring in the confined space that lip bulge loop and cylinder cap are formed；It is provided with several axial threaded hole on cylinder cap, screwed hole is fitted with corresponding tight fixed bolt and locknut.This utility model uses several axial tight fixed bolts to replace the radial direction lock-screw on former cylinder cap, avoid original lock-screw and damage the problem of fine thread on cylinder barrel, later stage easy accessibility, and after using axial tight fixed bolt, fairlead axially loaded is more uniform, because causing the problem of fairlead axial float after radial direction lock-screw damaged screw, and then " leaking " phenomenon caused because of fairlead axial float will not be it also avoid；Coordinate the radial seal set up and Nei Ka back-up ring simultaneously, substantially increase cylinder seal effect, reduce and leak.
Description
Technical field
This utility model relates to cylinder seal field, is specially a kind of modified model oil cylinder cylinder cap and seals structure.
Background technology
In prior art, the cylinder seal pair overwhelming majority use the sealing of O type, the sealing of Y type, V-seal, U-shaped sealing or
It it is the combining form of above-mentioned sealing.Shown in Fig. 1 is that a kind of common oil cylinder cylinder cap seals structure, in this structure, cylinder barrel 1 with
Fairlead 4 is sealed by O, and fairlead 4 is compressed by cylinder cap 3, and cylinder cap 3 is threadedly attached in cylinder barrel 1 lateral surface, and finally
Lock with lock-screw 2.This structure is given no cause for much criticism in miniature bore cylinder designs, but has owed in the design of large-diameter oil cylinder
Lacking, mainly large-diameter cylinder tube screw thread is closely-pitched, process more difficult, cost is high, precision is difficult to ensure that, and equipped after lead to
The mode crossing tightening screw lock is easily damaged screw thread, and when causing later period maintenance, cylinder cap is the most quick detachable, again screws not after dismounting
Firm phenomenon, to such an extent as to cause fairlead axial float, cause O RunddichtringO premature breakdown, formed " leaking ".Therefore, pin
This screw connection structure of large-diameter oil cylinder should be improved.
Summary of the invention
The purpose of this utility model is to provide a kind of cylinder cap for large-diameter oil cylinder and seals structure, to improve prior art
Present in problem.
This utility model is achieved by the following technical solution:
A kind of modified model oil cylinder cylinder cap seals structure, and including cylinder barrel, piston rod, be arranged between cylinder barrel and piston rod leads
To set, the cylinder cap being threaded on cylinder barrel, fairlead arranges a lip bulge loop, at the confined air that lip bulge loop is formed with cylinder cap
In be provided with radial seal and Nei Ka back-up ring；It is provided with several axial threaded hole on cylinder cap, screwed hole is fitted with corresponding
Tight fixed bolt, described tight fixed bolt contacts with fairlead pressure-bearing, and tight fixed bolt is also fitted with locknut.
Further, the guide ring that also includes being arranged on fairlead inside circumference face, O RunddichtringO, Yx sealing ring, this
Special envelope.
Compared with prior art, the beneficial effects of the utility model are:
1, several axial tight fixed bolt is used to replace the radial direction lock-screw on former cylinder cap, it is to avoid original lock-screw damages
The problem of fine thread on bad cylinder barrel, later stage easy accessibility, and after using axial tight fixed bolt, fairlead axially loaded is more equal
Even, because causing the problem of fairlead axial float after radial direction lock-screw damaged screw, and then will not it also avoid because of fairlead
" leaking " phenomenon that axial float causes.
2, in the confined space that fairlead and cylinder cap are formed, it is additionally arranged radial seal and Nei Ka back-up ring, improves oil cylinder close
Envelope effect, reduces and leaks.
3, between piston rod and fairlead, improve the form of sealing ring, be additionally arranged Yx sealing ring and Si Te envelope.Yx is close
Seal is mainly used in the sealing of reciprocating mechanism, and it relies on lip to the close contact of coupled face and to produce under pressure
Raw bigger contact pressure reaches the purpose sealed；Si Te envelope is then to utilize its bladed to seal structure and its good resorption effect
Fruit and anti-extrusion performance, reduce the fine film pulled out from oil pocket by piston rod, thus reduce the leakage rate of hydraulic oil.By upper
State O RunddichtringO, Yx sealing ring, this special envelope three's seal combination, the slip of oil cylinder can be substantially reduced.
Accompanying drawing explanation
Fig. 1 is that in prior art, oil cylinder cylinder cap seals structure.
Fig. 2 is this utility model structural representation.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention the present invention will be further described.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain this
Utility model, is not used to limit this utility model.
As in figure 2 it is shown, present embodiment discloses a kind of modified model oil cylinder cylinder cap to seal structure, including cylinder barrel 1, piston rod
11, the fairlead 6 being arranged between cylinder barrel 1 and piston rod 11, the cylinder cap 2 being threaded on cylinder barrel 1, the improvement is that:
Fairlead 6 is provided with a lip bulge loop 61, is provided with radial seal 3 in the confined space that lip bulge loop 61 and cylinder cap 2 are formed
With interior card back-up ring, improve cylinder seal effect, reduce and leak；Several axial threaded hole, screwed hole it is provided with on cylinder cap 2
In be fitted with corresponding tight fixed bolt 51, described tight fixed bolt 51 contacts with fairlead 6 pressure-bearing, and described tight fixed bolt 51 is also joined
Equipped with locknut 51.Several axial tight fixed bolt is used to replace the radial direction lock-screw on former cylinder cap 2, it is to avoid original locking
Screw damages the problem of fine thread, later stage easy accessibility on cylinder barrel, and after using axial tight fixed bolt, fairlead axially loaded
More uniform, will not because causing the problem of fairlead axial float after radial direction lock-screw damaged screw, and then it also avoid because of
" leaking " phenomenon that fairlead axial float causes.
As a kind of preferred version of the present embodiment, the guide ring 10 that also includes being arranged on fairlead 6 inside circumference face,
O RunddichtringO 9, Yx sealing ring 8, this special envelope 7.Compared with sealing of the prior art, it is additionally arranged Yx sealing ring and Si Te envelope, Yx
Sealing ring can be used for the sealing of reciprocating mechanism, and it relies on lip to the close contact of coupled face and to produce under pressure
Raw bigger contact pressure reaches the purpose sealed；Si Te envelope is then to utilize its bladed to seal structure and its good resorption effect
Fruit and anti-extrusion performance, reduce the fine film pulled out from oil pocket by piston rod, thus reduce the leakage rate of hydraulic oil.By upper
State O RunddichtringO, Yx sealing ring, this special envelope three's seal combination, the slip of oil cylinder can be substantially reduced.
Above description is to explanation of the present utility model, is not to restriction of the present utility model, and this utility model is limited
Scope see claim, in the case of this utility model basic conception, this utility model can make other shape
The amendment of formula.
Claims (2)
1. modified model oil cylinder cylinder cap seals a structure, including cylinder barrel (1), piston rod (11), is arranged on cylinder barrel (1) and piston rod
(11) fairlead (6) between, the cylinder cap (2) being threaded on cylinder barrel (1), it is characterised in that described fairlead (6) is arranged
One lip bulge loop (61), is provided with radial seal (3) and interior card in the confined space that lip bulge loop (61) and cylinder cap (2) are formed
Back-up ring (4)；Described cylinder cap is provided with several axial threaded hole on (2), is fitted with corresponding tight fixed bolt (51) in screwed hole,
Described tight fixed bolt (51) contacts with fairlead (6) pressure-bearing, and described tight fixed bolt is also fitted with locknut.
A kind of modified model oil cylinder cylinder cap the most according to claim 1 seals structure, it is characterised in that also include being arranged on leading
Guide ring (10) on set (6) inside circumference face, O RunddichtringO (9), Yx sealing ring (8), this special envelope (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620644544.6U CN205780032U (en) | 2016-06-27 | 2016-06-27 | A kind of modified model oil cylinder cylinder cap seals structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620644544.6U CN205780032U (en) | 2016-06-27 | 2016-06-27 | A kind of modified model oil cylinder cylinder cap seals structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780032U true CN205780032U (en) | 2016-12-07 |
Family
ID=58130697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620644544.6U Expired - Fee Related CN205780032U (en) | 2016-06-27 | 2016-06-27 | A kind of modified model oil cylinder cylinder cap seals structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205780032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087379A (en) * | 2017-12-20 | 2018-05-29 | 大大科技(宁国)有限公司 | Novel hydraulic oil cylinder top cover and oil cylinder connection structure |
-
2016
- 2016-06-27 CN CN201620644544.6U patent/CN205780032U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087379A (en) * | 2017-12-20 | 2018-05-29 | 大大科技(宁国)有限公司 | Novel hydraulic oil cylinder top cover and oil cylinder connection structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200627 |