CN2846839Y - Oil seal device for loader hydraulic oil cylinder - Google Patents
Oil seal device for loader hydraulic oil cylinder Download PDFInfo
- Publication number
- CN2846839Y CN2846839Y CN 200520041083 CN200520041083U CN2846839Y CN 2846839 Y CN2846839 Y CN 2846839Y CN 200520041083 CN200520041083 CN 200520041083 CN 200520041083 U CN200520041083 U CN 200520041083U CN 2846839 Y CN2846839 Y CN 2846839Y
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- CN
- China
- Prior art keywords
- ring
- piston rod
- oil
- seal device
- cylinder
- 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 - Lifetime
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Abstract
The utility model relates to an oil seal device, which can solve the service performance of the existing hydraulic oil cylinder for loaders. The design structure of the oil seal device of the utility model can obviously improve the oil leakage phenomenon of the hydraulic oil cylinder, ensure that the loader can work normally, stably and continuously when the oil temperature of hydraulic oil rises to 120 DEG C; the utility model can be suitable for environments where working conditions are relatively inclement; besides, the design structure of the oil seal device can effectively prolong the service life of the components of the hydraulic oil cylinder. A piston rod guiding ring and a piston guiding ring of the oil seal device can have guiding and supporting action in the process that the system works and protect a piston rod and the inner wall of a cylinder from being scuffed; when a piston rod sealing ring and a piston sealing ring are sealed, the surface of the piston rod and the surface of the inner wall of the cylinder form a layer of oil film so as to play the role of lubrication; besides, a piston rod buffer ring protects the piston rod sealing ring from being damaged when pressure is instantly changed and thus the service life of other sealing devices is extended.
Description
Affiliated technical field
The utility model relates to a kind of sealing configuration of hydraulic jack oil-sealing arrangement, and this structure mainly is used on the hydraulic jack of wheel loader.
Background technique
At present, general loader hydraulic jack oil seal structure makes the Sealing sealing effect lose efficacy easily on the market, causes the oil cylinder leakage of oil; And when the system oil temperature rise, hydraulic jack is proper functioning constantly.
Summary of the invention
In order to solve the problem of the hydraulic jack seal fails of using on the present loader, the groove form of the oil-sealing arrangement that the utility model design is adopted is:
Piston rod envelope: dust ring+seal ring+supporting ring+buffer ring+supporting ring
Piston envelope: supporting ring+seal ring+supporting ring
The technological scheme that its technical problem that solves the utility model adopts is: this oil-sealing arrangement groove structure is to design in conjunction with Chinese seal standard and international seal standard, can improve the oil leakage phenomenon of hydraulic jack significantly; Can guarantee loader continuous firing stably normally when oily temperature rise to 120 ℃; Compare rugged environment applicable to working condition; And can prolong working life of hydraulic jack component effectively.
The beneficial effects of the utility model are, can the fine problems that must solve the hydraulic jack leakage of oil, improve the stability of system works.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is an assembling schematic diagram of the present utility model.
Among the figure: 1. joint shaft bearing, 2. circlip for hole, 3. dust ring, 4. circlip for shaft, 5. rod seal circle, 6. ring, 7. check ring, 8. piston rod guide ring, 9. cylinder body, 10.O the shape circle, 11. piston rod buffer rings, 12. guide sleeves, 13. piston rod, 14.O shape circle, 15. piston packings, 16. the piston guide ring, 17. pistons, 18. cylinder end clamping fixed screws.
Embodiment
In Fig. 1, piston rod guide ring (8), piston guide ring (16) play the effect of guiding and supporting in system work process, and protection piston rod and inner wall of cylinder are not pulled; Rod seal circle (5), piston packing (15) form one deck oil film at piston rod surface and inner wall of cylinder surface in sealing, play lubricated effect; Piston rod buffer ring (11) protection rod seal circle (5) when the variation of pressure moment is not damaged, and has prolonged the working life of other Sealing.
Claims (3)
1. loader hydraulic jack oil-sealing arrangement: dust ring, seal ring, supporting ring, buffer ring, supporting ring are installed in proper order on the piston rod, and piston upper supporting ring, seal ring, supporting ring are installed in proper order.When high pressure oil impacted seal ring, buffer ring played buffer protection function;
2. hydraulic jack oil-sealing arrangement according to claim 1 is characterized in that: adopt Chinese seal standard and international seal standard to design, dust ring has scrapes dirty lip, and buffer ring adopts the stair ring structure.
3. loader hydraulic jack oil-sealing arrangement according to claim 1 is characterized in that adopting the cascade buffer ring, plays the effect of buffering high pressure, the protection seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041083 CN2846839Y (en) | 2005-04-22 | 2005-04-22 | Oil seal device for loader hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520041083 CN2846839Y (en) | 2005-04-22 | 2005-04-22 | Oil seal device for loader hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846839Y true CN2846839Y (en) | 2006-12-13 |
Family
ID=37512262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520041083 Expired - Lifetime CN2846839Y (en) | 2005-04-22 | 2005-04-22 | Oil seal device for loader hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846839Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562710A (en) * | 2012-02-13 | 2012-07-11 | 莱州兴达液压机械有限公司 | Secondary oil cylinder of wood splitting machine |
| CN104747532A (en) * | 2014-07-31 | 2015-07-01 | 汤子仁 | Oil cylinder |
-
2005
- 2005-04-22 CN CN 200520041083 patent/CN2846839Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562710A (en) * | 2012-02-13 | 2012-07-11 | 莱州兴达液压机械有限公司 | Secondary oil cylinder of wood splitting machine |
| CN104747532A (en) * | 2014-07-31 | 2015-07-01 | 汤子仁 | Oil cylinder |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150422 Granted publication date: 20061213 |
|
| DD01 | Delivery of document by public notice |
Addressee: Xu Jun Document name: Notification of Expiration of Patent Right Duration |