CN202811647U - Excavator cylinder piston rod sealing device - Google Patents
Excavator cylinder piston rod sealing device Download PDFInfo
- Publication number
- CN202811647U CN202811647U CN 201220445143 CN201220445143U CN202811647U CN 202811647 U CN202811647 U CN 202811647U CN 201220445143 CN201220445143 CN 201220445143 CN 201220445143 U CN201220445143 U CN 201220445143U CN 202811647 U CN202811647 U CN 202811647U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- ring
- piston
- cylinder barrel
- seal ring
- 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 an excavator cylinder piton rod sealing device, which is characterized in that: a piston rod is arranged in a cylinder barrel; a piston is connected to one end of the piston rod through screw threads; a locking nut is arranged on the piston rod on an outer side of the piston; a seal ring and a dustproof ring are arranged in a groove in of an inner diameter of one end of the cylinder barrel; and check rings are respectively arranged on two sides of the seal ring and the dustproof ring. Through the arrangement, the seal ring and the dustproof ring are mainly applied in sealing between the cylinder barrel and the piston rod, so that dust is prevented from entering, and favorable sealing and protection functions are achieved.
Description
Technical field
The utility model relates to the middle high-pressure cylinder sealing device, is specifically related to a kind of excavator oil cylinder piston rod seal apparatus.
Background technique
The excavator frequency of utilization is high at present, and motion speed is fast, longevity of service, and operating conditions badly waits features, causes easily the seal failure of excavator cylinder piston rod, operating time shortening etc., the working life of reducing the excavator oil cylinder.
Summary of the invention
The purpose of this utility model is to provide a kind of high temperature resistant, high pressure resistant, the excavator oil cylinder piston rod seal apparatus of anti-permanence.
To achieve these goals, the utility model is provided with piston rod in the inside of cylinder barrel, end at piston rod has been threaded connection piston, piston rod is provided with locking nut in the outside of piston, in an end internal diameter groove of cylinder barrel, be provided with seal ring and dust ring, be respectively equipped with back-up ring in the both sides of seal ring and dust ring.
By above setting, seal ring of the present utility model and dust ring are mainly used in the sealing between cylinder barrel and the piston rod, prevent that dust from entering, and have played good sealing and protective action.
Description of drawings:
Now the utility model is described in further detail by reference to the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, cylinder barrel, 2, piston rod, 3, piston, 4, locking nut, 5, seal ring, 6, dust ring, 7, back-up ring.
Embodiment:
As shown in Figure 1, the utility model is provided with piston rod 2 in the inside of cylinder barrel 1, end at piston rod 2 has been threaded connection piston 3, be provided with locking nut 4 at the outside of piston 3 piston rod 2, in an end internal diameter groove of cylinder barrel 1, be provided with seal ring 5 and dust ring 6, be respectively equipped with back-up ring 7 in the both sides of seal ring 5 and dust ring 6.By above setting; seal ring 5 of the present utility model and dust ring 6 usefulness back-up rings 7 location; dust ring 6 has stopped the extraneous impurity such as dust; heel in oil pressure effect lower seal 5 deforms; whole slip surface just and the surface of piston rod 2 stick together fully; reach the excellent sealing effect, seal ring 5 and dust ring 6 have played the effect of sealing and protection.
Claims (1)
1. excavator oil cylinder piston rod seal apparatus, it is characterized in that: the inside at cylinder barrel is provided with piston rod, end at piston rod has been threaded connection piston, piston rod is provided with locking nut in the outside of piston, in an end internal diameter groove of cylinder barrel, be provided with seal ring and dust ring, be respectively equipped with back-up ring in the both sides of seal ring and dust ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445143 CN202811647U (en) | 2012-09-03 | 2012-09-03 | Excavator cylinder piston rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220445143 CN202811647U (en) | 2012-09-03 | 2012-09-03 | Excavator cylinder piston rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811647U true CN202811647U (en) | 2013-03-20 |
Family
ID=47870529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220445143 Expired - Fee Related CN202811647U (en) | 2012-09-03 | 2012-09-03 | Excavator cylinder piston rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811647U (en) |
-
2012
- 2012-09-03 CN CN 201220445143 patent/CN202811647U/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: 20130320 Termination date: 20150903 |
|
| EXPY | Termination of patent right or utility model |