CN201358977Y - Novel hydraulic cylinder - Google Patents
Novel hydraulic cylinder Download PDFInfo
- Publication number
- CN201358977Y CN201358977Y CNU2008200249940U CN200820024994U CN201358977Y CN 201358977 Y CN201358977 Y CN 201358977Y CN U2008200249940 U CNU2008200249940 U CN U2008200249940U CN 200820024994 U CN200820024994 U CN 200820024994U CN 201358977 Y CN201358977 Y CN 201358977Y
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- CN
- China
- Prior art keywords
- piston
- hydraulic cylinder
- cylinder body
- containing rings
- novel hydraulic
- 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)
Abstract
The utility model discloses a novel hydraulic cylinder which comprises a cylinder body, a guide sleeve as well as a piston and a piston rod that are sheathed in the cylinder body, wherein the external diameter of the piston is provided with pollutant containing rings. As the pollutant containing rings are arranged on the external diameter of the piston, and a sealing part and a support element of the piston are arranged between the two pollutant containing rings, the pollutant containing rings can avoid oil or other impurities contacting the sealing part and the support element, thus effectively prolonging the service life of the sealing part of the piston and improving the reliability thereof.
Description
Technical field
The utility model belongs to the hydraulic element field, the oil hydraulic cylinder that particularly a kind of engineering machinery is used.
Background technique
At present, the action of equipment in the engineering machinery adopts the reciprocating double-action oil hydraulic cylinder that hydraulic pressure can be transformed into mechanical energy mostly, the turning to, overturn, excavate, hoist etc. of Control work device.The reciprocating double-action hydraulic cylinder piston external diameter of using in the existing engineering machinery is installed Sealing and support ring and is prevented that two chambeies from scurrying oil and letting out in causing, piston seal causes scurrying oil because oil contamination is easy to damage, thereby influences the oil cylinder serviceability and cause maintenance cost to improve.
Summary of the invention
The purpose of this utility model provides a kind of piston seal of can effectively protecting not by oil contamination with regard to being at the defective of above-mentioned prior art, thereby improves the novel two-way hydraulic cylinder of its serviceability and sealing effect.
Its technical solution is as follows:
A kind of novel hydraulic cylinder, it comprises cylinder body, guide sleeve and is sleeved on piston, piston rod in the cylinder body, above-mentioned piston external diameter is installed and is received dirty ring.
The utility model is owing to receive dirty ring in the piston external diameter installation, the Sealing of piston and supporting member are arranged on two and receive between the dirty ring, above-mentionedly receive dirty ring and can stop that fluid or other foreign material contact with supporting member with Sealing, thereby can effectively improve the working life and the reliability of piston seal.
As improvement of the present utility model, above-mentioned piston two ends are respectively arranged with the reducing throttle mechanism that floats with respect to the cylinder body two ends.Above-mentioned reducing throttle mechanism can make the oil back chamber inner fluid produce pressure because of throttling action, the mechanical energy that continue the piston element of motion this moment is absorbed by the fluid of oil back chamber, the internal pressure that produces in the oil back chamber is resisted mutually with inertial force, owing to be variable-diameter structure, along with orifice size is progressively dwindled in the increase of stroke, the strength ratio that kinetic energy is absorbed is more even, has not only reduced mechanical shock and vibrations but also can avoid excessive shock absorbing pressure.So-called float is exactly that plunger in the damping mechanism can radially carry out small adjustment automatically, can make the restriction effect The Gift of Being the Best You Can Be and reduce manufacture difficulty, effectively avoids piston impact to the cylinder body two ends when rundown, the protection associated components.
As further improvement of the utility model, be sealed into following structure between above-mentioned piston rod and the guide sleeve, be disposed with from outside to inside that skeleton is dustproof, primary seal, buffering high pressure sealing, composite bush.
Above-mentioned buffering high pressure sealing can prevent that impacting with high pressure from damaging primary seal, prolongs the working life of primary seal; Dustproof all pollutants such as extraneous dust, water that can effectively stop of skeleton enter in the oil cylinder, guarantee the oil cylinder turbidity test; Primary seal prevents that oil cylinder internal pressure oil from leaking outside; Composite bush directly contacts with piston rod, bears the piston rod lateral force, guarantees Sealing decrement unanimity in a circumferential direction, improves sealing effect.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Figure is the structural representation of a kind of mode of execution of the utility model.
Embodiment
As shown in the figure, the utility model mainly comprises cylinder body 1, it is cylinder bottom 3 that cylinder body 1 an interior end is provided with guide sleeve 2 the other ends, piston rod 4 and piston 5 are sleeved in the inner chamber of cylinder block, Sealing 51, piston support ring 52 are arranged on the cock body of above-mentioned piston 5, respectively be provided with a cast iron at the two ends of cock body 5 and receive dirty ring 53; Be sealed into following structure between above-mentioned guide sleeve 2 and the piston rod 4: be followed successively by from outside to inside that skeleton is dustproof 41, primary seal 42, buffering high pressure sealing 43, composite bush 44; Above-mentioned piston 5 two ends are respectively arranged with the reducing throttle mechanism that floats.
Above-mentionedly receive dirty ring and can adopt cast-iron alloy or engineering plastics etc. suitable material is made.
The utility model includes but are not limited to above mode of execution, and other conspicuous variations all should not exceed protection domain of the present utility model.
Claims (1)
1, a kind of novel hydraulic cylinder, it comprises cylinder body, guide sleeve and be sleeved on piston, piston rod in the cylinder body, it is characterized in that: described piston external diameter is installed and is received dirty ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200249940U CN201358977Y (en) | 2008-07-11 | 2008-07-11 | Novel hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200249940U CN201358977Y (en) | 2008-07-11 | 2008-07-11 | Novel hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358977Y true CN201358977Y (en) | 2009-12-09 |
Family
ID=41424740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200249940U Expired - Fee Related CN201358977Y (en) | 2008-07-11 | 2008-07-11 | Novel hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358977Y (en) |
-
2008
- 2008-07-11 CN CNU2008200249940U patent/CN201358977Y/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20140711 |
|
| EXPY | Termination of patent right or utility model |