CN201016393Y - Guide bushing and piston-rod little-gap assembly with seal ring protective sleeve - Google Patents
Guide bushing and piston-rod little-gap assembly with seal ring protective sleeve Download PDFInfo
- Publication number
- CN201016393Y CN201016393Y CNU2006201654831U CN200620165483U CN201016393Y CN 201016393 Y CN201016393 Y CN 201016393Y CN U2006201654831 U CNU2006201654831 U CN U2006201654831U CN 200620165483 U CN200620165483 U CN 200620165483U CN 201016393 Y CN201016393 Y CN 201016393Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- piston rod
- protective sleeve
- guide sleeve
- guide bush
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
- Sealing Devices (AREA)
Abstract
The utility model provides a close clearance component of a guide bush having a seal ring protective sleeve and a piston rod, which comprises a guide bush and a piston rod which is matched with the guide bush with a close clearance between the guide bush and the piston rod. The utility model is characterized in that the seal ring protective sleeve is arranged on the periphery of one end of the piston rod; the outside diameter of the seal ring protective sleeve is the same with the outside diameter of the piston rod. The inner diameter of the piston rod includes the thread arranged on the end of the piston rod; the peripheric end of the seal ring protective sleeve is provided with a transition chamfer. When the guide bush is assembled with the piston rod, the seal ring inside the guide bush is extruded and positioned outwards due to an opening of the seal ring, and the edge of the seal ring does not turn, be extruded or cut. The component provided by the utility model is simple, practical, and the assembly efficiency is improved.
Description
Technical field
The utility model relates to guide sleeve and the little gap of piston rod assembly in the hydraulic machinery.
Background technique
In hydraulic machinery, for the little gap assembling between guide sleeve and the piston rod, there are the following problems for present structural type:
1, because piston or plunger had before been packed in the oil cylinder, when guide sleeve is assembled with piston and plunger again, often too small because of the outside thread spacing of piston and assembling of plunger outer end and slide block connecting flange, can't draw compacted seal with instrument again, the seal ring airtight quality in the guide sleeve can't be guaranteed;
2, owing to piston or plunger rod exposed junction screw thread place, monolateral gap＜5mm when guide sleeve and its assembling, the phenomenon of damage guide sleeve inner seal rings appears in regular meeting.
Summary of the invention
The utility model is for avoiding above-mentioned existing in prior technology deficiency, a kind of guide sleeve and the little gap of piston rod assembly that has the seal ring protecting jacket is provided, thereby the protection airtight quality is avoided damage guide sleeve inner seal rings in the assembling process.
The technological scheme that the utility model technical solution problem is adopted is:
The utility model comprise guide sleeve and with the piston rod of the little Spielpassung of guide sleeve.
Structural feature of the present utility model is on piston rod 4; be positioned at its rod end periphery seal ring protecting jacket 3 is set; the external diameter of seal ring protecting jacket 3 is identical with the external diameter of piston rod 4, and internal diameter contains the end thread of piston rod 4, is provided with transition chamfering 5 on the outer circumference end head position of seal ring protecting jacket 3.
Prior art is compared, and the beneficial effects of the utility model are embodied in:
1, the utility model makes that seal ring can not cut by crowded because of its opening outwards pushes the location in the assembly process of guide sleeve and piston rod; the extruding of over current protection cover is balanced; guaranteed airtight quality on the one hand, avoided the guide sleeve inner seal ring to be damaged on the other hand because of squeezing to cut.
2, the easy centering of seal ring in the utility model guide sleeve, thereby make assembly process easier and quick, the protection assembly quality.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model seal ring protecting jacket structural representation.
Number in the figure: 1 guide sleeve, 2 seal rings, 3 seal ring protecting jackets, 4 piston rods, 5 transition chamferings.
Below pass through embodiment, and in conjunction with the accompanying drawings the utility model be further described:
Embodiment
Referring to Fig. 1 and Fig. 2, present embodiment comprise guide sleeve 1 and with the piston rod 4 of guide sleeve 1 little Spielpassung.
Shown in the figure; on piston rod 4, be positioned at its rod end periphery seal ring protecting jacket 3 is set, the external diameter of seal ring protecting jacket 3 is identical with the external diameter of piston rod 4; internal diameter contains the end thread of piston rod 4, on the outer circumference end head position of seal ring protecting jacket 3 transition chamfering 5 is set.
Assembly process:
1, seal ring protecting jacket 3 is set in the rod end of piston rod 4;
2, finish the assembly of guide sleeve 1 and seal ring 2, form the guide sleeve assembly;
3, hang behind the positive guide sleeve assembly and can directly carry out suit, when overlapping process of assembling, automatically seal ring 2 is closed up, and the guide sleeve assembly is inserted in the piston rod 4 smoothly with piston rod 4.
The utility model is suitable for the little gap assembly of guide sleeve and plunger equally.
Claims (1)
1. the guide sleeve and the little gap of the piston rod assembly that have the seal ring protecting jacket; comprise guide sleeve (1) and with the piston rod (4) of the little Spielpassung of guide sleeve (1); it is characterized in that on described piston rod (4); be positioned at its rod end periphery seal ring protecting jacket (3) is set; the external diameter of described seal ring protecting jacket (3) is identical with the external diameter of piston rod (4); internal diameter contains the end thread of piston rod (4), is provided with transition chamfering (5) on the outer circumference end head position of described seal ring protecting jacket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201654831U CN201016393Y (en) | 2006-12-12 | 2006-12-12 | Guide bushing and piston-rod little-gap assembly with seal ring protective sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201654831U CN201016393Y (en) | 2006-12-12 | 2006-12-12 | Guide bushing and piston-rod little-gap assembly with seal ring protective sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016393Y true CN201016393Y (en) | 2008-02-06 |
Family
ID=39056879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201654831U Expired - Fee Related CN201016393Y (en) | 2006-12-12 | 2006-12-12 | Guide bushing and piston-rod little-gap assembly with seal ring protective sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016393Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001600A (en) * | 2010-10-28 | 2011-04-06 | 枣庄矿业(集团)有限责任公司高庄煤矿 | Sealing ring pilot device for disc brake |
| CN113251685A (en) * | 2020-02-13 | 2021-08-13 | 住友重机械工业株式会社 | Cryogenic refrigerator and sealing member |
-
2006
- 2006-12-12 CN CNU2006201654831U patent/CN201016393Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001600A (en) * | 2010-10-28 | 2011-04-06 | 枣庄矿业(集团)有限责任公司高庄煤矿 | Sealing ring pilot device for disc brake |
| CN113251685A (en) * | 2020-02-13 | 2021-08-13 | 住友重机械工业株式会社 | Cryogenic refrigerator and sealing member |
| CN113251685B (en) * | 2020-02-13 | 2022-11-22 | 住友重机械工业株式会社 | Cryogenic refrigerator and sealing member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HEFEI METALFORMING MACHINE TOOL CO., LTD. Free format text: FORMER NAME: HEFEI METALFORMING MACHINE TOOL LIMITED |
|
| CP03 | Change of name, title or address |
Address after: 230601 Hefei economic and Technological Development Zone, Anhui, No. 123 Ziyun Road Patentee after: Hefei Metalforming Machine Tool Co., Ltd. Address before: 230022 No. 65 Wangjiang West Road, Anhui, Hefei Patentee before: Hefei Metalforming Machine Tools Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20151212 |
|
| EXPY | Termination of patent right or utility model |