CN202418571U - Seal device of hydraulic cylinder - Google Patents
Seal device of hydraulic cylinder Download PDFInfo
- Publication number
- CN202418571U CN202418571U CN2012200036635U CN201220003663U CN202418571U CN 202418571 U CN202418571 U CN 202418571U CN 2012200036635 U CN2012200036635 U CN 2012200036635U CN 201220003663 U CN201220003663 U CN 201220003663U CN 202418571 U CN202418571 U CN 202418571U
- Authority
- CN
- China
- Prior art keywords
- guide sleeve
- hydraulic cylinder
- seal
- axostylus axostyle
- gland
- 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 a seal device of a hydraulic cylinder, which comprises a cylinder body, a shaft rod, an end cover and a gland, wherein an oil hole is arranged on the end cover, a V-shaped clip cloth seal ring and a guide sleeve are arranged between the end cover and the shaft hole, and a dustproof seal ring and a seal sleeve are arranged between the shaft rod and the gland. The guide sleeve is a copper guide sleeve, and a wide and shallow spiral oil groove is arranged at the inner ring of the copper guide sleeve. The shaft rod is subjected to surface hardening and the hardness is more than or equal to HRC50. The seal device of the hydraulic cylinder has the benefits that the unbalance loading bearing capacity of the V-shaped clip cloth seal ring is especially good, and the sealing property is excellent, as the inner ring of the guiding copper guide sleeve is provided with the spiral oil groove, the shaft rod can be effectively lubricated, the sealing and guide bearing capacities are especially excellent, and the unbalance loading bearing capacity of the shaft rod can also be improved after the surface hardening.
Description
Technical field
The utility model relates to the seal arrangement of a kind of seal arrangement, particularly a kind of oil hydraulic cylinder, belongs to hydraulic transmission technology field.
Background technique
At present, in hydraulic transmission technology field, as the oil hydraulic cylinder of Hydraulic Power Transmission System vitals; Its seal arrangement is mainly at several kinds, and a kind of is to adopt the lip seal coil apparatus, is modal seal arrangement; A kind of in addition employing combined seal ring or compound lip seal coil apparatus, also having a kind of is the gasket set of this special envelope+Yx circle+guide ring, the oil hydraulic cylinder of this type of seal arrangement all can bear certain unbalance loading; But can not bear big unbalance loading, the oil hydraulic cylinder of special like that envelope+Yx circle+guide ring seal arrangement is under the situation of bearing big unbalance loading; The axostylus axostyle of oil hydraulic cylinder is local can be because of bearing big unbalance loading frictional heating; Cause guide ring to produce plastic deformation and wearing and tearing fast,, cause the local leakage of oil big in the gap to such an extent as to the gap length between the relative axostylus axostyle of seal ring is different.
The model utility content
In order to overcome above-mentioned defective, the utility model provides a kind of seal arrangement of oil hydraulic cylinder, under the situation of bearing big unbalance loading, still can keep excellent sealing performance, and the guiding bearing capacity is strong.
To achieve these goals; The technological scheme of the utility model is: a kind of seal arrangement of oil hydraulic cylinder; Comprise cylinder body, axostylus axostyle, end cap, gland; On the said end cap oilhole is set, V-arrangement folder cloth seal ring and guide sleeve are set between end cap and the axostylus axostyle, dust-proof seal ring and stuffing box gland are set between described axostylus axostyle and the gland.
Further, described guide sleeve is the copper guide sleeve, and the inner ring of copper guide sleeve is provided with wide and shallow helical oil groove.
Further, described axostylus axostyle surface hardening, hardness >=HRC50.
The beneficial effect of the utility model is: V-arrangement folder cloth seal ring to hold inclined to one side ability strong especially; Good seal performance; The copper guide sleeve inner ring of making guiding usefulness is arranged on helical oil groove, can carry out effective lubricating to axostylus axostyle, and sealing and guiding bearing capacity are strong especially; After the axostylus axostyle surface hardening, also can improve the ability that axostylus axostyle bears unbalance loading.
Description of drawings
Fig. 1 is the device schematic representation of the utility model.
Fig. 2 is the device schematic representation of the helical oil groove of the utility model.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment the utility model is done explanation further.
As depicted in figs. 1 and 2; The seal arrangement of the oil hydraulic cylinder of the utility model; Comprise cylinder body 1, axostylus axostyle 2, end cap 3, gland 4; On the said end cap 3 oilhole 5 is set, V-arrangement folder cloth seal ring 7 and guide sleeve 6 are set between end cap 3 and the axostylus axostyle 2, dust-proof seal ring 9 and stuffing box gland 8 are set between described axostylus axostyle 2 and the gland 4.Described guide sleeve 6 is the copper guide sleeve, and the inner ring of copper guide sleeve is provided with wide and shallow helical oil groove 10.Described axostylus axostyle 2 carries out surface hardening, and hardness >=HRC50 connects gland 4 and end cap 3 with bolt; Gland 4 compressing V-arrangement folder cloth seal rings 7 and guide sleeve 6 make the good sealing of formation between axostylus axostyle 2 and the end cap 3, under the situation of bearing big unbalance loading, also can keep excellent sealing performance; Copper guide sleeve 6 inner rings are arranged on helical oil groove 10, can carry out effective lubricating to axostylus axostyle 2, and sealing and guiding bearing capacity are strong especially; After axostylus axostyle 2 surface hardenings, also improve the ability that axostylus axostyle bears unbalance loading.
The technological scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technological scheme of the utility model all falls within the protection domain of the utility model.
Claims (3)
1. the seal arrangement of an oil hydraulic cylinder; Comprise cylinder body, axostylus axostyle, end cap, gland; It is characterized in that: on the said end cap oilhole is set, V-arrangement folder cloth seal ring and guide sleeve are set between end cap and the axostylus axostyle, dust-proof seal ring and stuffing box gland are set between described axostylus axostyle and the gland.
2. the seal arrangement of oil hydraulic cylinder according to claim 1, it is characterized in that: described guide sleeve is the copper guide sleeve, and the inner ring of copper guide sleeve is provided with wide and shallow helical oil groove.
3. the seal arrangement of oil hydraulic cylinder according to claim 1 is characterized in that: described axostylus axostyle surface hardening, hardness >=HRC50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200036635U CN202418571U (en) | 2012-01-06 | 2012-01-06 | Seal device of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200036635U CN202418571U (en) | 2012-01-06 | 2012-01-06 | Seal device of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202418571U true CN202418571U (en) | 2012-09-05 |
Family
ID=46743341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200036635U Expired - Fee Related CN202418571U (en) | 2012-01-06 | 2012-01-06 | Seal device of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202418571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696209A (en) * | 2015-01-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Sealing box |
| CN105889474A (en) * | 2014-12-29 | 2016-08-24 | 欧阳抗美 | Sliding bearing used for automobile automatic transmission clutch |
-
2012
- 2012-01-06 CN CN2012200036635U patent/CN202418571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889474A (en) * | 2014-12-29 | 2016-08-24 | 欧阳抗美 | Sliding bearing used for automobile automatic transmission clutch |
| CN104696209A (en) * | 2015-01-06 | 2015-06-10 | 中国石油天然气股份有限公司 | Sealing box |
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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: 20120905 Termination date: 20160106 |