CN103775419A - Piston sealing structure - Google Patents
Piston sealing structure Download PDFInfo
- Publication number
- CN103775419A CN103775419A CN201210409382.4A CN201210409382A CN103775419A CN 103775419 A CN103775419 A CN 103775419A CN 201210409382 A CN201210409382 A CN 201210409382A CN 103775419 A CN103775419 A CN 103775419A
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- China
- Prior art keywords
- piston
- sealing
- ring
- sealing structure
- cylinder barrel
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Abstract
The invention provides a piston sealing structure, and particularly relates to a piston sealing structure for a hydraulic cylinder. The piston sealing structure is mainly used for the sealing between a piston and a cylinder barrel. The piston sealing structure comprises the piston, the cylinder barrel and a sealing groove, wherein the piston in sliding fit with the cylinder barrel is mounted on a piston rod, and sealing is formed between a sealing element on the piston and the cylinder barrel. A sealing device is composed of a supporting ring, a dirt containing ring, a Gely ring, a dirt containing ring and a supporting ring, starting force is small, guide length is increased, large eccentric loads can be borne, and machining of the matched groove meets the domestic manufacturing technological level better. The sealing structure is simple, low in cost, good in seating effect, capable of bearing the large eccentric loads and wide in application working condition.
Description
Technical field
The present invention has designed
oneplant piston sealing structure, be specifically related to a kind of piston for hydraulic cylinder sealing configuration, be mainly used in the sealing between piston and cylinder barrel.
Background technique
Construction Machinery Industry in China, through the development of 50 years, has formed the product that can produce 18 large classes, 4500 plurality of specifications models, substantially can meet important industry domestic market demand, that have considerable scale and flourish vigor.Be widely used in the economic construction of national every profession and trade, building in the earth and rock works of railway, highway, hydroelectric power, mine excavation, airport, the disaster relief etc., play a significant role.Along with the quickening of China's economic construction paces and pulling of government investment, the going into operation of big-and-middle-sized infrastructure, Construction Machinery Market demand also will have very large growth, and mainly take middle large tonnage product as main.Various engineering machinery all be unable to do without oil hydraulic cylinder, the quality of oil hydraulic cylinder performance directly affects the performance of complete machine, in work, oil hydraulic cylinder is because work is frequent, it is large to impact, very easily produce sealing back pressure, in the course of time piston seal will lose efficacy, and oil hydraulic cylinder shake creeps, let out in even, and causing complete machine cannot work, make troubles to construction operation, cause economic loss to client.
Summary of the invention
The object of the invention is to make up above-mentioned deficiency, provide a kind of simple in structure, mounting or dismounting are convenient, good sealing effect, reliable performance ground piston for hydraulic cylinder sealing configuration.Improve product reliability, Security and working life.
Technological scheme of the present invention is: a kind of piston for hydraulic cylinder sealing configuration, and it comprises piston and cylinder barrel, and sealed groove, with the piston that cylinder barrel is slidably matched, is arranged on piston rod, the seal element on piston and cylinder barrel form sealing.Described seal arrangement is made up of the support ring+dirty ring+Glais ring+dirty ring+support ring of receiving of receiving, and tripping force is little, increases guiding length, can bear larger unbalance loading, and the groove processing matching more meets domestic manufacturing technology level.
Compared with existing product, not only seal arrangement is simple in structure, cost is low, and good sealing effect can bear larger unbalance loading, and application operating mode is extensive.
Accompanying drawing explanation
Below in conjunction with accompanying drawing explanation implementation methods
Fig. 1 anti-loose structure schematic diagram.
specific implementation method
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, sealing piston of hydraulic cylinder structure of the present invention be between piston 6 and cylinder barrel 7, i.e. mounting sealing device on the external cylindrical surface at piston, sealing device by support ring 1,5, is received dirty ring 2,4 by mainly, Glais ring 5, piston 6 and cylinder barrel 7 form.Support ring 1,5 adopts CM20 material, and this material is the aromatic system polyamides dimension phenolic resin woven composite of reinforcing, and with graphite affix, material thermostability and wear resistance are strong, and friction factor is little, can bear great lateral force simultaneously; Anti-soil ring 2,4 adopts the design of KZT, the impurity that utilizes the softer adsorption liquid cylinder pressure of anti-soil ring KZT material to produce in running, and protection primary seal Glais ring 5 is not damaged, the working life of improving primary seal.Not only improve the reliability and safety of product, and be beneficial to the lifting of product total quality level.
Claims (3)
1. the present invention has designed a kind of piston sealing structure, it is characterized in that: be made up of the support ring+dirty ring+Glais ring+dirty ring+support ring of receiving of receiving.
2. support ring according to claim 1, is characterized in that: adopt CM20 material.
3. want the dirty ring of receiving described in 1 according to right, it is characterized in that: adopt the design of KZT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409382.4A CN103775419A (en) | 2012-10-24 | 2012-10-24 | Piston sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409382.4A CN103775419A (en) | 2012-10-24 | 2012-10-24 | Piston sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103775419A true CN103775419A (en) | 2014-05-07 |
Family
ID=50568040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210409382.4A Pending CN103775419A (en) | 2012-10-24 | 2012-10-24 | Piston sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103775419A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832490A (en) * | 2015-05-05 | 2015-08-12 | 樊硕 | Ultrahigh-pressure nitrogen energy-saving auxiliary cylinder |
| CN106089844A (en) * | 2016-07-28 | 2016-11-09 | 安徽合力股份有限公司 | A kind of steering oil cylinder for forklift with unbalance loading limit function |
-
2012
- 2012-10-24 CN CN201210409382.4A patent/CN103775419A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832490A (en) * | 2015-05-05 | 2015-08-12 | 樊硕 | Ultrahigh-pressure nitrogen energy-saving auxiliary cylinder |
| CN106089844A (en) * | 2016-07-28 | 2016-11-09 | 安徽合力股份有限公司 | A kind of steering oil cylinder for forklift with unbalance loading limit function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |