CN202280832U - Sealing device - Google Patents
Sealing device Download PDFInfo
- Publication number
- CN202280832U CN202280832U CN2011204364511U CN201120436451U CN202280832U CN 202280832 U CN202280832 U CN 202280832U CN 2011204364511 U CN2011204364511 U CN 2011204364511U CN 201120436451 U CN201120436451 U CN 201120436451U CN 202280832 U CN202280832 U CN 202280832U
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- China
- Prior art keywords
- piston
- cylinder
- piston rod
- utility
- sealing
- 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 sealing device, comprising a cylinder body, a piston rod, a piston installed at the piston rod, and one end of the cylinder is provided with a cylinder cover. The sealing device is characterized in that: the piston is provided with a sealing rubber ring; the two ends of the piston are respectively provided with a fixed plate; and the connection part of the cylinder end cover and the piston rod is provided with a support ring. The sealing device provided by the utility model is advantageous in that self-sealing performance is enhanced via design of the sealing rubber ring; an overflow hole disposed in the fixed plate effectively eliminates backpressure effect borne by the sealing loop; the support ring takes effect of guiding, grinding injury due to friction between the piston and a hydraulic body and between the piston rod and the cylinder head hole is effectively prevented, and service lifetime of product is prolonged.
Description
Technical field
The utility model relates to seal arrangement, relates in particular to a kind of seal arrangement that is used for oil hydraulic cylinder, belongs to technical field of engineering components.
Background technique
Oil hydraulic cylinder is the conversion equipment that hydraulic coupling is converted into mechanical energy.In scrap bundler, thin plate deep drawing hydraulic machine, casting machine hydraulic pressure such as cut at large hydraulic equipment; Its hydraulic cylinder works stroke is long, load force is big; To these relative movement parts between piston and the oil hydraulic cylinder inwall, between piston rod and the cylinder head hole, require sealing very reliably, but in actual production; Often because of the poor sealing of oil hydraulic cylinder; Cause interior leakage, creep, grind wound, problem such as pressure maintaining performance difference, had a strong impact on stationarity, reliability and the working life of hydraulic equipment, even directly caused whole hydraulic equipment cisco unity malfunction.Therefore, need the hydraulic cylinder sealing problem is made serious analysis, and improve with effective encapsulating method.
The model utility content
The utility model purpose is that a kind of a kind of seal arrangement that can enhance seal performance is provided for the deficiency that overcomes existing technology.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of seal arrangement, and comprise cylinder body, piston rod, be contained in the piston of piston rod, said cylinder body one end is provided with cylinder end cap, and it is characterized in that: said piston is provided with O-ring seal; Said piston two ends are respectively arranged with fixed plate; Said cylinder end cap and piston rod joint are provided with support ring.
Preferably, said fixed plate is provided with overflow hole.
Preferably, said overflow hole has three.
Preferably, said O-ring seal is a Yx-shaped ring.
Because the utilization of technique scheme, the utility model compared with prior art has advantage:
A kind of seal arrangement of the utility model scheme, the design through O-ring seal has strengthened the selfsealings performance; The overflow hole that has on the fixed plate has been eliminated the back pressure effect that seal ring receives effectively; Supporting ring plays the effect of guiding, has effectively prevented between piston and hydraulic cylinder, piston rod and the cylinder head hole friction and grinds wound, has prolonged the working life of product.
Description of drawings
Below in conjunction with accompanying drawing the utility model technological scheme is described further:
Accompanying drawing 1 is the sectional view of a kind of seal arrangement of the utility model;
Wherein: 1, cylinder body; 2, piston; 3, piston rod; 4, cylinder end cap; 5, O-ring seal; 6, supporting ring; 7, fixed plate; 8, overflow hole.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.
Accompanying drawing 1 is the described a kind of seal arrangement of the utility model, comprises cylinder body 1, piston rod 3, is contained in the piston 2 of piston rod 3, and said cylinder body 1 one ends are provided with cylinder end cap 4, and said piston 2 is provided with O-ring seal 5; Said piston 2 two ends are respectively arranged with fixed plate 7; Said cylinder end cap 4 is provided with supporting ring 6 with piston rod 3 joints; Said fixed plate 7 is provided with overflow hole 8; Said overflow hole 8 has three; Said O-ring seal 5 is a Yx-shaped ring.
Because the utilization of technique scheme, the utility model compared with prior art has advantage:
A kind of seal arrangement of the utility model scheme, the design through O-ring seal has strengthened the selfsealings performance; The overflow hole that has on the fixed plate has been eliminated the back pressure effect that seal ring receives effectively; Supporting ring plays the effect of guiding, has effectively prevented between piston and hydraulic cylinder, piston rod and the cylinder head hole friction and grinds wound, has prolonged the working life of product.
Below only be the concrete exemplary applications of the utility model, the protection domain of the utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technological scheme of formation, or any to move mode dull and stereotyped described in the utility model, all drop within the utility model rights protection scope.
Claims (4)
1. seal arrangement comprises cylinder body, piston rod, is contained in the piston of piston rod, and said cylinder body one end is provided with cylinder end cap, and it is characterized in that: said piston is provided with O-ring seal; Said piston two ends are respectively arranged with fixed plate; Said cylinder end cap and piston rod joint are provided with support ring.
2. a kind of seal arrangement according to claim 1 is characterized in that: said fixed plate is provided with overflow hole.
3. a kind of seal arrangement according to claim 2 is characterized in that: said overflow hole has three.
4. according to claim 1 or the described a kind of seal arrangement of claim 2, it is characterized in that: said O-ring seal is a Yx-shaped ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204364511U CN202280832U (en) | 2011-11-08 | 2011-11-08 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204364511U CN202280832U (en) | 2011-11-08 | 2011-11-08 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280832U true CN202280832U (en) | 2012-06-20 |
Family
ID=46227001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204364511U Expired - Fee Related CN202280832U (en) | 2011-11-08 | 2011-11-08 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280832U (en) |
-
2011
- 2011-11-08 CN CN2011204364511U patent/CN202280832U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20121108 |