CN202251231U - Hydraulic cylinder end cover - Google Patents
Hydraulic cylinder end cover Download PDFInfo
- Publication number
- CN202251231U CN202251231U CN2011203402018U CN201120340201U CN202251231U CN 202251231 U CN202251231 U CN 202251231U CN 2011203402018 U CN2011203402018 U CN 2011203402018U CN 201120340201 U CN201120340201 U CN 201120340201U CN 202251231 U CN202251231 U CN 202251231U
- Authority
- CN
- China
- Prior art keywords
- groove
- pressure
- ring
- box
- end cover
- 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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- Sealing Devices (AREA)
Abstract
The utility model provides a hydraulic cylinder end cover. Five circles of independent grooves are positioned on the inner wall where the end cover contacts a piston rod. The five independent grooves are respectively used for installing a copper ring, a guide ring, a first sealing ring, a second sealing ring and a dustproof ring. A pressure relaxing groove is arranged in the middles of two grooves for installing the two sealing. A pressure relaxing box is arranged on the outer surface of the end cover, a pressure reducing elastic sheet is arranged in the pressure relaxing box, and the pressure relaxing box is divided into two cavities by the pressure reducing elastic sheet. One cavity is communicated with the pressure relaxing groove, the other cavity is communicated with a hydraulic oil cylinder, and the pressure relaxing groove is filled with hydraulic oil. The hydraulic cylinder end cover can further reduce possibility of oil leakage.
Description
Affiliated technical field
The utility model relates to the hydraulic machinery field, especially, is a kind of oil hydraulic cylinder end cap.
Background technique
Hydraulic jack is generally by hydraulic oil cylinder body cylinder body, and cylinder bar (piston rod) and Sealing are formed, and cylinder interior is divided into two parts by piston, logical respectively oilhole.Because the compression ratio of liquid is very little, so when one of them oilhole oil-feed, piston will be pushed and make another oilhole fuel-displaced, piston drive piston rod is done and is stretched out (withdrawal) motion, otherwise still.
Because the pressure of hydraulic pressure is often bigger,, if deal with improperly, reveal not only contaminated site, but but also fire hazard and explosive accident although present seal approach is all good, are revealed often inevitable so that seal approach must be done is very well.
Summary of the invention
To the problems referred to above, the purpose of the utility model is to provide a kind of oil hydraulic cylinder end cap, and this oil hydraulic cylinder end cap can further reduce the possibility of leakage of oil.
The scheme that the utility model technical solution problem is adopted is: on end cap and inwall that piston rod contacts, have the independent groove of five circles; Article five, said groove is respectively applied for the installation copper ring; Guide collar; First sealing ring; Second sealing ring; And dust ring; Also have a slow groove of pressing in the middle of being used to install two grooves of two said sealing rings; Said end cap outer surface is provided with the slow box of pressing; Be provided with the decompression shell fragment in the said slow pressure box; Said decompression shell fragment is isolated into two cavitys with said slow pressure box; One of them cavity is communicated with said slow pressure groove, and another cavity is communicated with hydraulic jack; Be full of hydraulic oil in the said slow pressure groove.
The beneficial effect of the utility model is: during said hydraulic jack operation; Its inner oil pressure is passed in the said slow pressure box through conduit; And weakened, thereby make the pressure difference of oil pressure generation in oil pressure and the hydraulic jack in the said slow pressure groove by said decompression shell fragment; So; From the inboard of said end cap to the outside; Along end-cover axle to pressure reduce gradually, this will make the pressure difference of said first seal ring, the second seal ring both sides obviously descend, thereby reduce the stressed of seal ring; Make seal ring have better sealing effect, reduced the possibility of leakage of oil effectively.
Description of drawings
Fig. 1 is an embodiment's of oil hydraulic cylinder end cap a longitudinal section schematic representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
In the embodiment shown in fig. 1; One piston 1 is set in the hydraulic jack 2, and end cap 3 is arranged at an end of hydraulic jack 2, and said end cap 3 is used for the slit between closed piston 1 and the hydraulic jack 2; On end cap 3 and inwall that piston rod 1 contacts, have the independent groove of five circles; Article five, said groove is respectively applied for copper ring 31, guide collar 32, the first seal ring 33a, the second seal ring 33b and dust ring 35 is installed, and also has a slow groove 34 of pressing in the middle of being used to install two grooves of two said seal ring 33a, 33b, and said end cap 3 outer surfaces are provided with the slow box 4 of pressing; Be provided with decompression shell fragment 41 in the said slow pressure box 3; Said decompression shell fragment 41 is isolated into two cavitys with said slow pressure box 4, and one of them cavity is communicated with said slow pressure groove 34, and another cavity is communicated with hydraulic jack 2; Be full of hydraulic oil in the said slow pressure groove 34.
The working procedure of above-mentioned end cap is: during said hydraulic jack 2 operations; Its inner oil pressure is passed in the said slow pressure box 4 through conduit 21; And weakened, thereby make the pressure difference of oil pressure generation in oil pressure and the hydraulic jack 2 in the said slow pressure groove 34 by said decompression shell fragment 41; So; From the inboard of said end cap to the outside; Along end-cover axle to pressure reduce gradually, this will make the pressure difference of the said first seal ring 33a, the second seal ring 33b both sides obviously descend, thereby reduce the stressed of seal ring; Make seal ring have better sealing effect, reduced the possibility of leakage of oil effectively.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (1)
1. oil hydraulic cylinder end cap; It is characterized in that: on end cap (3) and inwall that piston rod (1) contacts, have the independent groove of five circles; Article five, said groove is respectively applied for copper ring (31), guide collar (32), first seal ring (33a), second seal ring (33b) and dust ring (35) is installed; Also have a slow groove (34) of pressing in the middle of being used to install two grooves of two said seal rings (33a, 33b); Said end cap (3) outer surface is provided with the slow box (4) of pressing, and is provided with decompression shell fragment (41) in the said slow pressure box (3), and said decompression shell fragment (41) is isolated into two cavitys with said slow pressure box (4); One of them cavity is communicated with said slow pressure groove (34), and another cavity is communicated with hydraulic jack (2); Be full of hydraulic oil in the said slow pressure groove (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203402018U CN202251231U (en) | 2011-09-08 | 2011-09-08 | Hydraulic cylinder end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203402018U CN202251231U (en) | 2011-09-08 | 2011-09-08 | Hydraulic cylinder end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251231U true CN202251231U (en) | 2012-05-30 |
Family
ID=46112481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203402018U Expired - Fee Related CN202251231U (en) | 2011-09-08 | 2011-09-08 | Hydraulic cylinder end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251231U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912870A (en) * | 2014-03-11 | 2015-09-16 | 湖南协力液压有限公司 | Sealing structure for pumping oil cylinder rod |
| CN106837917A (en) * | 2016-12-30 | 2017-06-13 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| 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 |
| CN112696514A (en) * | 2020-12-25 | 2021-04-23 | 上海百图低温阀门有限公司 | LNG (liquefied Natural gas) heat-insulating gas cylinder pressurization and pressure regulation valve for vehicle |
| CN115402658A (en) * | 2022-11-02 | 2022-11-29 | 徐州三原环境工程有限公司 | Disc kickoff for solid waste bin |
-
2011
- 2011-09-08 CN CN2011203402018U patent/CN202251231U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912870A (en) * | 2014-03-11 | 2015-09-16 | 湖南协力液压有限公司 | Sealing structure for pumping oil cylinder rod |
| CN106837917A (en) * | 2016-12-30 | 2017-06-13 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN106837917B (en) * | 2016-12-30 | 2018-04-24 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| 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 |
| CN112696514A (en) * | 2020-12-25 | 2021-04-23 | 上海百图低温阀门有限公司 | LNG (liquefied Natural gas) heat-insulating gas cylinder pressurization and pressure regulation valve for vehicle |
| CN115402658A (en) * | 2022-11-02 | 2022-11-29 | 徐州三原环境工程有限公司 | Disc kickoff for solid waste bin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130908 |