CN201763720U - Low friction piston - Google Patents
Low friction piston Download PDFInfo
- Publication number
- CN201763720U CN201763720U CN2010205349425U CN201020534942U CN201763720U CN 201763720 U CN201763720 U CN 201763720U CN 2010205349425 U CN2010205349425 U CN 2010205349425U CN 201020534942 U CN201020534942 U CN 201020534942U CN 201763720 U CN201763720 U CN 201763720U
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- CN
- China
- Prior art keywords
- piston
- annular groove
- support frame
- piston sheet
- sheet
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a low friction piston including a cylinder sleeve, a piston rod, a piston sheet, a support frame, an installation nut and an installation gasket, the support frame is fixedly arranged on the piston rod through the installation nut and the installation gasket, the support frame is provided with the piston sheet, the external wall of the piston sheet is circumferentially provided with a circular groove, the circular groove is opened and is filled with grease, the notch of the circular groove is opposite to the axis of the piston rod; the piston sheet in the circular groove is integrally provided with a plurality of circular cogs, the circular cogs are arranged along the circumference of the piston sheet; a protective film layer is attached on the piston sheet in the circular groove. The utility model has the advantages of low coefficient of friction, long service lifetime or better air-tightness.
Description
Technical field
The utility model relates to a kind of piston, is specially a kind of piston of low coefficient of friction.
Background technique
This piston is a press machine with the special-purpose pneumatic component of balace weight, it can be for a long time in no oil supply, at a high speed, abominable operating conditions proper functioning such as high temperature, theoretical service life is above 5000KM.Elder generation's secondary piston is generally cast iron quality, and piston ring, seal ring are installed in the groove on the piston, and piston ring and cylinder sleeve friction factor are bigger, under high speed, the lubricated operating mode of no oil supply, can produce higher temperature rise, obviously shorten the working life of seal ring, balace weight be produced leak, lost efficacy.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of friction factor is low, long service life, tightness piston preferably.
The technological scheme that provides according to the utility model, described low-friction piston, comprise cylinder sleeve, piston rod, piston sheet, support frame, installation nut and pad is installed, on piston rod,, nut support frame is installed with the installation spacers by being installed, on support frame, be provided with the piston sheet, it is characterized in that: on the outer wall of piston sheet, be circumferentially with annular groove along it, described annular groove is uncovered shape, in described annular groove, be full of lubricating grease, and the notch of the annular groove axis of piston rod dorsad; Be on the piston sheet in the annular groove and be wholely set some annular ridges, described annular ridge is along the circumferential setting of piston sheet; Be on the piston sheet in the annular groove and be stained with the protective film layer.
Described protective film layer is made by teflon.
In the axial section of described annular groove, the bottom land of annular groove is positioned at the support frame below near the lower surface place of support frame.
The utlity model has that friction factor is low, advantage such as long service life and tightness are better.The only annular ridge of piston sheet and cylinder sleeve existence friction during work, friction factor is low.The composite factor effect lower pistons such as effectively lubricating of lubricating ester obviously prolong working life in the protective film of annular ridge, annular groove, and tightness also has raising, and leakage rate is littler.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present utility model.
Fig. 2 is the enlarged view of A part among Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure, this low-friction piston, comprise cylinder sleeve 1, piston rod 2, piston sheet 3, support frame 4, nut 5 be installed and pad 6 is installed, on piston rod 2,, nut 5 is installed with support frame 4 with installation pad 6 by being installed, on support frame 4, be provided with piston sheet 3, it is characterized in that: on the outer wall of piston sheet 3, be circumferentially with annular groove 7 along it, described annular groove 7 is uncovered shape, in described annular groove 7, be full of lubricating grease 8, and the notch of annular groove 7 axis of piston rod 2 dorsad; Be on the piston sheet 3 in the annular groove 7 and be wholely set some annular ridges 9, described annular ridge 9 is along the circumferential setting of piston sheet 3; Be on the piston sheet 3 in the annular groove 7 and be stained with protective film layer 10.Described protective film layer 10 is made by teflon.
Be on the piston sheet 3 in the annular groove 7 and be stained with protective film layer 10.Described protective film layer 10 is made by teflon.Teflon glue sulphur has greatly prolonged the working life of piston sheet 3 on the piston sheet 3 of rubber material.
In annular groove 7, be full of lubricating grease 8, can increase the tightness between piston sheet 3 and the cylinder sleeve 1 so greatly, improved the performance of piston.Be on the piston sheet 3 in the annular groove 7 and be wholely set some annular ridges 9, piston is when work like this, only there are annular ridge 9 parts to rub mutually with cylinder sleeve 1, reduced the friction factor between piston sheet 3 and the cylinder sleeve 1, so greatly reduce piston sheet 3 and cylinder sleeve 1 frictional force, prolonged the working life of piston sheet 3.
Claims (3)
1. low-friction piston, comprise cylinder sleeve (1), piston rod (2), piston sheet (3), support frame (4), nut (5) is installed and pad (6) is installed, upward, nut (5) is installed with support frame (4) at piston rod (2) with installation pad (6) by being installed, on support frame (4), be provided with piston sheet (3), it is characterized in that: on the outer wall of piston sheet (3), be circumferentially with annular groove (7) along it, described annular groove (7) is uncovered shape, in described annular groove (7), be full of lubricating grease (8), and the notch of annular groove (7) axis of piston rod (2) dorsad; Be on the piston sheet (3) in the annular groove (7) and be wholely set some annular ridges (9), described annular ridge (9) is along the circumferential setting of piston sheet (3); Be on the piston sheet (3) in the annular groove (7) and be stained with protective film layer (10).
2. low-friction piston as claimed in claim 1 is characterized in that: described protective film layer (10) is made by teflon.
3. low-friction piston as claimed in claim 1 is characterized in that: in the axial section of described annular groove (7), the bottom land of annular groove (7) is positioned at support frame (4) below near the lower surface place of support frame (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205349425U CN201763720U (en) | 2010-09-18 | 2010-09-18 | Low friction piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205349425U CN201763720U (en) | 2010-09-18 | 2010-09-18 | Low friction piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763720U true CN201763720U (en) | 2011-03-16 |
Family
ID=43716327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205349425U Expired - Lifetime CN201763720U (en) | 2010-09-18 | 2010-09-18 | Low friction piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201763720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936391A (en) * | 2010-09-18 | 2011-01-05 | 无锡市拓发自控设备有限公司 | Low-friction piston |
| CN103562567A (en) * | 2011-05-25 | 2014-02-05 | Smc株式会社 | Coupling structure for piston used in fluid-pressure cylinder, and coupling method therefor |
-
2010
- 2010-09-18 CN CN2010205349425U patent/CN201763720U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936391A (en) * | 2010-09-18 | 2011-01-05 | 无锡市拓发自控设备有限公司 | Low-friction piston |
| CN101936391B (en) * | 2010-09-18 | 2012-07-04 | 无锡市拓发自控设备有限公司 | Low-friction piston |
| CN103562567A (en) * | 2011-05-25 | 2014-02-05 | Smc株式会社 | Coupling structure for piston used in fluid-pressure cylinder, and coupling method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110316 Effective date of abandoning: 20120704 |