CN2410483Y - Combined sealing device of telescopic sleeve hydraulic oil cylinder - Google Patents
Combined sealing device of telescopic sleeve hydraulic oil cylinder Download PDFInfo
- Publication number
- CN2410483Y CN2410483Y CN 00222376 CN00222376U CN2410483Y CN 2410483 Y CN2410483 Y CN 2410483Y CN 00222376 CN00222376 CN 00222376 CN 00222376 U CN00222376 U CN 00222376U CN 2410483 Y CN2410483 Y CN 2410483Y
- Authority
- CN
- China
- Prior art keywords
- ring
- telescopic sleeve
- combined sealing
- flutes
- utility
- 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 relates to a combined sealing device of a telescopic sleeve hydraulic oil cylinder. The outer circle of a piston rod 1 is sheathed with a two-stage rod 6. The outer circle of the two-stage rod 6 is sheathed with a cylinder type front end cover 4, wherein, the inner wall of one end of the front end cover 4 is provided with two flutes, and the other end of the front end cover is connected with an outer cylinder 5. A dustproof ring 2 and a combined sealing ring 3 are respectively positioned in the two flutes. The inner wall of one end of the two-stage rod 6 is provided with two flutes. The dustproof ring 2 and the combined sealing ring 3 are respectively positioned in the two flutes. The utility model has the characteristics of simple and compact structure, convenient installation and operation, good sealing performance, good abrasion resistance, long service life, etc. The utility model can effectively conduct automatic compensation to natural abrasion.
Description
The utility model seal arrangement is a kind of combination sealing arrangement, is particularly useful for the seal arrangement of telescopic sleeve hydraulic jack.
On the sealing problem of hydraulic jack, sealing means such as V-type, J type, Y type, Yx type, O type circle are all adopted in traditional sealing, wherein can manually adjust the compensation except that V-shaped seal ring, and all the other sealing means all can not compensate adjustment, and the life-span is shorter.Can not change under the abominable situation of sealing means or operating conditions, this problem is particularly evident.Still also there is above-mentioned deficiency in " a kind of edge cover telscoping hydaulic cylinder " in the patent disclosure of number of patent application 97222057.
The purpose of this utility model provides a kind of simple in structure, can not only solve effectively sealing effect and life-span, and the combination sealing arrangement of the telescopic sleeve hydraulic jack that can compensate automatically.
The purpose of this utility model is to realize like this, include piston rod, secondary bar, its piston rod cylindrical is with the secondary bar, secondary bar cylindrical is with the front cover of drum type, front cover one end inwall has two grooves to place dust ring respectively and combined seal ring, the other end and outer cylinder join, and secondary bar one end inwall has two grooves to place dust ring and combined seal ring respectively.
The utility model indication combined seal ring, its outer ring are that circle cuts the shape face and inner ring is that L type cross section shape constitutes.
Because the L type cross section shape Sealing of piston rod contact has good extending performance, energy tensile buckling, good springiness can be fitted in sealing part admirably, and the circular section shape of its outer ring then plays a part compensate for wear, and the size of its compensation rate depends on the size of decrement.
Since adopt technique scheme, compared with prior art simple and compact for structure, easy to install, good seal performance, wear resistance is good, and the life-span is long, can be effectively to characteristics such as fair wear and tear compensate automatically.
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing is the utility model sectional structure schematic representation.
Among the figure: 1-piston rod 2-dust ring 3-combined seal ring 4-front cover 5-outer cylinder 6-secondary bar
As shown in drawings, front cover 4 links to each other with outer cylinder 5, and device has secondary bar 6 and piston rod 1 within it, and 6 two inwalls of front cover 4 and secondary bar have two grooves to be placed with dust ring 2 and combined seal ring 3 respectively.The outer ring that circle expression combined seal ring 3 amplifies in A portion is a round cross section shape, and inner ring is a L type cross section shape.
Claims (2)
1. the combination sealing arrangement of a telescopic sleeve hydraulic jack, include piston rod (1), secondary bar (6), it is characterized in that piston rod (1) cylindrical is with secondary bar (6), secondary bar (6) cylindrical is with the front cover (4) of drum type, front cover (4) one end inwalls have two grooves to place dust ring (2) respectively and combined seal ring (3), the other end and outer cylinder (5) join, and secondary bar (6) one end inwalls have two grooves to place dust ring (2) and combined seal ring (3) respectively.
2. the combination sealing arrangement of a kind of telescopic sleeve hydraulic jack according to claim 1 is characterized in that its outer ring of combined seal ring (3) is that circular section shape and inner ring are that L type cross section shape constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00222376 CN2410483Y (en) | 2000-02-23 | 2000-02-23 | Combined sealing device of telescopic sleeve hydraulic oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00222376 CN2410483Y (en) | 2000-02-23 | 2000-02-23 | Combined sealing device of telescopic sleeve hydraulic oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410483Y true CN2410483Y (en) | 2000-12-13 |
Family
ID=33587125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00222376 Expired - Fee Related CN2410483Y (en) | 2000-02-23 | 2000-02-23 | Combined sealing device of telescopic sleeve hydraulic oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2410483Y (en) |
-
2000
- 2000-02-23 CN CN 00222376 patent/CN2410483Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |