CN104329319A - Hydraulic cylinder with dust cover - Google Patents
Hydraulic cylinder with dust cover Download PDFInfo
- Publication number
- CN104329319A CN104329319A CN201410567740.3A CN201410567740A CN104329319A CN 104329319 A CN104329319 A CN 104329319A CN 201410567740 A CN201410567740 A CN 201410567740A CN 104329319 A CN104329319 A CN 104329319A
- Authority
- CN
- China
- Prior art keywords
- dust
- proof cover
- hydraulic cylinder
- dust cover
- piston rod
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention relates to the technical field of a hydraulic cylinder, in particular to a hydraulic cylinder with a dust cover. The hydraulic cylinder comprises a cylinder body, a piston rod and the dust cover, wherein one end of the dust cover is fixed on the cylinder body, the other end of the dust cover is fixed on the piston rod; the hydraulic cylinder further comprises a compressed air source; the dust cover is provided with an emptying one-way valve; the compressed air source blows air to the dust cover through an air inlet; the internal part of the dust cover keeps a positive pressure state. The hydraulic cylinder has the beneficial effects that when the cylinder runs, the high-pressure air enables the internal part of the dust cover to keep the positive pressure state no matter the volume is increased or decreased; the clean high-pressure air is exhausted from the emptying one-way valve, so that the dust cannot enter the dust cover; the normal running of the cylinder can be guaranteed.
Description
Technical field
The present invention relates to oil hydraulic cylinder technical field, particularly a kind of oil hydraulic cylinder with dust-proof cover.
Background technique
In prior art, section hydraulic cylinder working environment very severe, except hot humid, also has the dust that a large amount of adhesion is high, the dust ring of a small amount of dust oil hydraulic cylinder itself just can be removed, but after adhesion amount acquires a certain degree, be attached to dust meeting worn piston bar and the Sealing of piston rod, cause seal failure, just need to arrange dust-proof cover, dust-proof cover does fore and aft motion along with piston rod, when piston rod stretches out, dust-proof cover internal capacity becomes large, air is entered by dust-proof cover ventilating hole, when piston rod is retracted, dust-proof cover internal capacity diminishes, air is got rid of by dust-proof cover ventilating hole, because dust is very large, when piston rod stretches out, air enters dust-proof cover inside by dust-proof cover ventilating hole, still have a small amount of dust and enter protective housing inside with air, and dust-proof cover is wrapped in piston rod, the adhesion condition of dust at piston rod cannot be seen intuitively, affect dust-proof effect
Summary of the invention
Technical problem to be solved by this invention is: improve a kind of oil hydraulic cylinder with dust-proof cover, improves dust-proof effect.
The technical solution adopted for the present invention to solve the technical problems is: a kind of oil hydraulic cylinder with dust-proof cover, comprise cylinder body, piston rod and dust-proof cover, one end of dust-proof cover is fixed on cylinder body, the other end of dust-proof cover is fixing on the piston rod, also comprise compressed air gas source, dust-proof cover has emptying one-way valve, and compressed air gas source is blown in dust-proof cover by suction port, keeps dust-proof cover inside to be in barotropic state.
For reducing compressed-air actuated energy consumption, further restriction, compressed air gas source is connected with the control system of oil hydraulic cylinder, blows or stop blowing according to the piston rod working state control compressed air gas source of control system, only when piston rod stretches out, compressed air gas source is blown in dust-proof cover.
Further restriction, suction port is arranged on the cylinder head of cylinder body.
The invention has the beneficial effects as follows: when oil cylinder runs, no matter high-pressure air makes dust-proof cover, inner volume becomes large or diminishes, and remain barotropic state, clean high-pressure air is discharged from emptying one-way valve, make dust cannot enter dust-proof cover inside, ensure that the normal operation of oil cylinder.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation;
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the A place partial enlarged drawing of Fig. 1;
In figure, 1. cylinder body, 2. piston rod, 3. dust-proof cover, 4. emptying one-way valve, 5. suction port.
Embodiment
As illustrated in fig. 1 and 2, a kind of oil hydraulic cylinder with dust-proof cover, comprise cylinder body 1, piston rod 2 and dust-proof cover 3, one end of dust-proof cover 3 is fixed on cylinder body 1 by anchor ear, the other end of dust-proof cover 3 is fixed on piston rod 2 by anchor ear, also comprise compressed air gas source, dust-proof cover 3 has emptying one-way valve 4, compressed air gas source is blown in dust-proof cover 3 by suction port 5, dust-proof cover 3 inside is kept to be in barotropic state, clean high-pressure air is discharged from emptying one-way valve 4, and dust cannot enter dust-proof cover inside, ensure that the normal operation of oil cylinder.
For saving the energy consumption of compressed air gas source, compressed air gas source is connected with the control system of oil hydraulic cylinder, blow according to the piston rod 2 working state control compressed air gas source of control system or stop blowing, dust-proof cover 3 inside is made to be in barotropic state, only when piston rod 2 stretches out, compressed air gas source is blown in dust-proof cover 3.When piston rod 2 is retracted, dust-proof cover 3 compresses, and produce malleation, the air of dust-proof cover inside is outwards vented by emptying one-way valve 4, does not need compressed air gas source to blow to dust-proof cover inside.
Suction port 5 is arranged on the cylinder head of cylinder body 1, does not certainly also get rid of, and suction port can be set directly on dust-proof cover.
Claims (3)
1. one kind has the oil hydraulic cylinder of dust-proof cover, comprise cylinder body (1), piston rod (2) and dust-proof cover (3), one end of dust-proof cover (3) is fixed on cylinder body (1), the other end of dust-proof cover (3) is fixed on piston rod (2), it is characterized in that: also comprise compressed air gas source, dust-proof cover (3) has emptying one-way valve (4), compressed air gas source is blown in dust-proof cover (3) by suction port (5), keeps dust-proof cover (3) inside to be in barotropic state.
2. the oil hydraulic cylinder with dust-proof cover according to claim 1, it is characterized in that: described compressed air gas source is connected with the control system of oil hydraulic cylinder, blow according to piston rod (2) the working state control compressed air gas source of control system or stop blowing, only when piston rod (2) stretches out, compressed air gas source is blown in dust-proof cover (3).
3. the oil hydraulic cylinder with dust-proof cover according to claim 1, is characterized in that: described suction port (5) is arranged on the cylinder head of cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567740.3A CN104329319A (en) | 2014-10-22 | 2014-10-22 | Hydraulic cylinder with dust cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567740.3A CN104329319A (en) | 2014-10-22 | 2014-10-22 | Hydraulic cylinder with dust cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104329319A true CN104329319A (en) | 2015-02-04 |
Family
ID=52404104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410567740.3A Pending CN104329319A (en) | 2014-10-22 | 2014-10-22 | Hydraulic cylinder with dust cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329319A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402195A (en) * | 2015-12-28 | 2016-03-16 | 湖州环丰机械有限公司 | Cylinder body structure of upper leveling oil cylinder |
| CN112814966A (en) * | 2020-12-29 | 2021-05-18 | 常德迪格机械制造有限公司 | Hydraulic oil cylinder body and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256306A (en) * | 1992-03-11 | 1993-10-05 | Kayaba Ind Co Ltd | Power cylinder |
| CN2346979Y (en) * | 1998-04-13 | 1999-11-03 | 刘颂曾 | Dust-proof air cylinder |
| JP2000120609A (en) * | 1998-10-09 | 2000-04-25 | Hitachi Ltd | Cylinder, mold device assembled with the same, and manufacture of semiconductor device |
| CN202718952U (en) * | 2012-06-17 | 2013-02-06 | 福建省龙岩盛通液压有限公司 | Dustproof hydraulic oil cylinder |
| CN103573741A (en) * | 2012-07-27 | 2014-02-12 | 常州市华立液压润滑设备有限公司 | Dust-proofing hydraulic cylinder |
| CN204186687U (en) * | 2014-10-22 | 2015-03-04 | 格力乐液压***(常州)有限公司 | A kind of oil hydraulic cylinder with dust-proof cover |
-
2014
- 2014-10-22 CN CN201410567740.3A patent/CN104329319A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05256306A (en) * | 1992-03-11 | 1993-10-05 | Kayaba Ind Co Ltd | Power cylinder |
| CN2346979Y (en) * | 1998-04-13 | 1999-11-03 | 刘颂曾 | Dust-proof air cylinder |
| JP2000120609A (en) * | 1998-10-09 | 2000-04-25 | Hitachi Ltd | Cylinder, mold device assembled with the same, and manufacture of semiconductor device |
| CN202718952U (en) * | 2012-06-17 | 2013-02-06 | 福建省龙岩盛通液压有限公司 | Dustproof hydraulic oil cylinder |
| CN103573741A (en) * | 2012-07-27 | 2014-02-12 | 常州市华立液压润滑设备有限公司 | Dust-proofing hydraulic cylinder |
| CN204186687U (en) * | 2014-10-22 | 2015-03-04 | 格力乐液压***(常州)有限公司 | A kind of oil hydraulic cylinder with dust-proof cover |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402195A (en) * | 2015-12-28 | 2016-03-16 | 湖州环丰机械有限公司 | Cylinder body structure of upper leveling oil cylinder |
| CN112814966A (en) * | 2020-12-29 | 2021-05-18 | 常德迪格机械制造有限公司 | Hydraulic oil cylinder body and manufacturing method thereof |
| CN112814966B (en) * | 2020-12-29 | 2023-04-25 | 常德迪格机械制造有限公司 | Hydraulic cylinder body and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |