CN106762995A - A kind of adjustable suppression servo valve self-oscillation device - Google Patents
A kind of adjustable suppression servo valve self-oscillation device Download PDFInfo
- Publication number
- CN106762995A CN106762995A CN201710094802.7A CN201710094802A CN106762995A CN 106762995 A CN106762995 A CN 106762995A CN 201710094802 A CN201710094802 A CN 201710094802A CN 106762995 A CN106762995 A CN 106762995A
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- servo valve
- stationary housing
- cylinder body
- mobile cylinder
- sealing ring
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Classifications
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- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8613—Control during or prevention of abnormal conditions the abnormal condition being oscillations
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Servomotors (AREA)
Abstract
The invention discloses the adjustable suppression servo valve self-oscillation device of one kind, belong to technical field of hydraulic pressure.The present invention includes contiguous block and filtering mechanism；Filtering mechanism is connected through a screw thread and is vertically mounted on contiguous block, and contiguous block one end is connected with integrated package, and the other end is connected with servo valve, and two ends junction is sealed using the first sealing ring；Filtering mechanism includes stationary housing, mobile cylinder body, piston and charge valve；Stationary housing one end is threadedly coupled with contiguous block, and the other end is threadedly coupled with mobile cylinder body, and junction is sealed with the 3rd sealing ring, and mobile cylinder body is positioned at the radial direction of stationary housing, the termination connection charge valve of mobile cylinder body by locking nut；Piston is installed in stationary housing.Simple structure of the present invention, easy for installation, low cost of manufacture does not change mechanism, the performance of original hydraulic system, hence it is evident that improve the pressure oscillation of hydraulic system, adjusts the volume of air cavity, adapts to different operating modes, the pressure oscillation of different frequency.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, more specifically to the adjustable suppression servo valve self-oscillation dress of one kind
Put.
Background technology
Hydraulic system just develops in fields such as Aeronautics and Astronautics, military affairs towards miniaturization, integrated direction, hydraulic system
The components such as pump, hydraulic cylinder are integrated in integrated package, and it is more prominent that this structure can cause hydraulic system pressure to fluctuate.Hydraulic pressure system
The servo valve applied in system is particularly susceptible to this pressure oscillation disturbance and causes the self-oscillation of self-oscillation phenomenon, servo valve to show
As being commonly called as uttering long and high-pitched sounds, typically a kind of higher-order of oscillation is particularly easy to the part such as support damaged in servo valve, and then cause servo valve
And whole hydraulic system can not work.The current problem in the industry cycle also in constantly research, also without a kind of universal effective
Measure is thoroughly eliminated.The method commonly used currently for this phenomenon generally has the whole servo valve of replacing, so can not only increase
Addition sheet, but also be that cannot eradicate phenomenon of uttering long and high-pitched sounds；Reduce can improve this phenomenon under system pressure some operating modes, but can make be
The hydraulic performance decline of system, stability is not high.
The content of the invention
1st, the problem to be solved
For the shortcomings and deficiencies that prior art is present, the invention provides the adjustable suppression servo valve self-oscillation of one kind
Device, simple structure is easy for installation, low cost of manufacture, and mechanism, the performance of original hydraulic system are not changed, hence it is evident that improve hydraulic pressure system
The pressure oscillation of system, adjusts the volume of air cavity, adapts to different operating modes, the pressure oscillation of different frequency.
2nd, technical scheme
A kind of adjustable suppression servo valve self-oscillation device, between the integrated package and servo valve of hydraulic system,
Including contiguous block and filtering mechanism；Described filtering mechanism is connected through a screw thread and is vertically mounted on contiguous block, described connection
Block one end is connected with integrated package, and the other end is connected with servo valve, and two ends junction is sealed using the first sealing ring；It is described
Filtering mechanism include stationary housing, mobile cylinder body, piston and charge valve；Described stationary housing one end connects with contiguous block screw thread
Connect, the other end is threadedly coupled with mobile cylinder body, and junction is sealed with the 3rd sealing ring, described mobile cylinder body passes through locking nut
It is positioned at the radial direction of stationary housing, the termination connection charge valve of mobile cylinder body；Piston, institute are installed in described stationary housing
The second sealing ring is installed between the piston and stationary housing stated.
As a further improvement on the present invention, the second described sealing ring is X-shaped sealing ring.
As a further improvement on the present invention, described mobile cylinder body end head between charge valve using be threadedly coupled, company
The 4th sealing ring of place is connect to seal.
As a further improvement on the present invention, limited location is installed on the stationary housing of described piston movement middle of stroke
Block, described limited block is stretched into stationary housing, and the movement travel to piston is spacing；The circular hole of described limited block and filter screen mistake
It is full of mating connection.
As a further improvement on the present invention, the 3rd described sealing ring is O-ring seal.
As a further improvement on the present invention, the 4th described sealing ring is O-ring seal.
3rd, beneficial effect
Compared to prior art, beneficial effects of the present invention are：
One kind of the invention is adjustable to suppress servo valve self-oscillation device, and simple structure is easy for installation, manufacturing cost
It is low, mechanism, the performance of original hydraulic system are not changed, fluid pressure line and filtering mechanism can act as suppressing fluid pressure in contiguous block
Fluctuation effect, hence it is evident that improve the pressure oscillation of hydraulic system, adjust the volume of air cavity, adapts to different operating modes, different frequency
Pressure oscillation, functional reliability is high.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the close-up schematic view of filtering mechanism in Fig. 1；
Fig. 3 is perspective cross section schematic diagram of the invention.
In figure：1st, contiguous block；2nd, filtering mechanism；3rd, the first sealing ring；4th, stationary housing；5th, the second sealing ring；6th, piston；
7th, locking nut；8th, mobile cylinder body；9th, the 3rd sealing ring；10th, the 4th sealing ring；11st, charge valve；12nd, limited block；13rd, filter screen；
14th, the 5th sealing ring.
Specific embodiment
The present invention is further described below with reference to specific embodiments and the drawings：
Embodiment 1
As Figure 1-3, a kind of adjustable suppression servo valve self-oscillation device of the present embodiment, installed in hydraulic system
Integrated package and servo valve between, including contiguous block 1 and filtering mechanism 2；Filtering mechanism 2 is connected through a screw thread the company of being vertically mounted on
Connect on block 1, the one end of contiguous block 1 is connected with integrated package, and the other end is connected with servo valve, two ends junction uses the first sealing ring
3 are sealed；Above-mentioned filtering mechanism 2 includes stationary housing 4, mobile cylinder body 8, piston 6 and charge valve 11；The one end of stationary housing 4
It is threadedly coupled with contiguous block 1, the other end is threadedly coupled with mobile cylinder body 8, and junction is sealed with the 3rd sealing ring 9, the 3rd sealing
Circle 9 is O-ring seal, and above-mentioned mobile cylinder body 8 is positioned at the radial direction of stationary housing 4, mobile cylinder body 8 by locking nut 7
Can be moved in the radial direction of stationary housing 4, the ends screw connection charge valve 11 of mobile cylinder body 8, junction is sealed with the 4th
Circle 10 is sealed, and the 4th sealing ring 10 is O-ring seal, and above-mentioned charge valve 11 is the check valve with unidirectional aerification function；It is above-mentioned
Piston 6 is installed in stationary housing 4, the second sealing ring 5 is installed between piston 6 and stationary housing 4, the second sealing ring 5 is that X-type is close
Seal；Limited block 12 is installed, limited block 12 stretches into stationary housing 4 on the stationary housing 4 in the middle part of the movement travel of above-mentioned piston 6
Interior, the movement travel to piston 6 is spacing；The circular hole of limited block 12 is connected with the interference fit of filter screen 13, it is to avoid the impurity outside device
Pollution stationary housing 4 and piston 6.
The cavity that stationary housing 4 is formed with mobile cylinder body 8 is divided into A chambers and B chambers, the centre of piston 6 and stationary housing by piston 6
4 composition C chambers, C chambers communicate with air, if there is seepage in liquids and gases, in penetrating into the C chambers that piston 6 is communicated with air,
May insure that gas end is mutually isolated with fluid end.
When using, before hydraulic work system, by charge valve 11 to the gas that rated pressure is filled with B chambers；Hydraulic pressure
During system boot, A chambers are full of fluid, and pressure is equal with the pressure of hydraulic system, and fluid promotes piston 6 to be moved to B chambers, B chambers gas
Body compresses, pressure increase, until A chambers, B cavity pressures are equal；Rotor cycle motion and the instruction of hydraulic system with pump are believed
Number change, oil liquid pressure can produce fluctuation, and when A cavity pressures increase, piston 6 is moved to B chambers and reaches new balance, conversely, working as A
When cavity pressure is reduced, piston 6 is moved to A chambers and reaches new balance, and the effect of filtering is reached to hydraulic system pressure fluctuation；Work as filter
When ripple effect does not eliminate the self-oscillation of servo valve, filtering mechanism 2 can be changed or the appearance that mobile cylinder body 8 changes B chambers is screwed
Product and then the filter effect of optimization different frequency pressure oscillation.
Four pipelines are respectively equipped with the present embodiment in integrated package, contiguous block 1, servo valve, are oil feed line, oil return pipe
Road, A pipelines and B pipelines；Wherein：Oil feed line, return line, A pipelines, B pipelines in integrated package respectively with contiguous block 1 in
Oil feed line, return line, A pipelines, B pipelines are communicated, the oil feed line, return line, A pipelines, B pipelines in contiguous block 1 point
Do not communicated with the oil feed line in servo valve, return line, A pipelines, B pipelines.It is as follows that fluid flows to process：During oil-feed, system
Oil feed line of the hydraulic oil from integrated package flows to the oil feed line in contiguous block 1, and then flows to the oil feed line in servo valve,
According to servo valve input current signal polarity, it is assumed that further towards A pipelines in servo valve, managed further towards A in contiguous block 1
Road, further towards A pipelines in integrated package；During oil return, B pipeline of the fluid from integrated package flows to B pipelines in contiguous block 1, enters
One step flows to B pipelines in servo valve, further towards return line in servo valve, further towards return line in contiguous block 1,
And then return line in integrated package is flowed to again, flow back to fuel tank.When servo valve input current opposite polarity, flow direction is with this similarly.
Right angle setting filtering mechanism 2 on one in four pipelines or several pipelines, junction is sealed with the 5th sealing ring 14,
Contiguous block 1 can be filtered with pipeline cavity volume, suppress servo valve self-oscillation phenomenon.
A kind of adjustable suppression servo valve self-oscillation device of the present embodiment, simple structure is easy for installation, manufacturing cost
It is low, mechanism, the performance of original hydraulic system are not changed, fluid pressure line and filtering mechanism can act as suppressing fluid pressure in contiguous block
Fluctuation effect, hence it is evident that improve the pressure oscillation of hydraulic system, adjust the volume of air cavity, adapts to different operating modes, different frequency
Pressure oscillation, functional reliability is high.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel enlightened by it, in the case where the invention objective is not departed from, is designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (6)
1. one kind is adjustable suppresses servo valve self-oscillation device, between the integrated package and servo valve of hydraulic system, its
It is characterised by：Including contiguous block (1) and filtering mechanism (2)；Described filtering mechanism (2) is connected through a screw thread the company of being vertically mounted on
Connect on block (1), described contiguous block (1) one end is connected with integrated package, and the other end is connected with servo valve, and two ends junction uses
First sealing ring (3) is sealed；Described filtering mechanism (2) including stationary housing (4), mobile cylinder body (8), piston (6) and
Charge valve (11)；Described stationary housing (4) one end is threadedly coupled with contiguous block (1), and the other end connects with mobile cylinder body (8) screw thread
Connect, junction is sealed with the 3rd sealing ring (9), described mobile cylinder body (8) is positioned at stationary housing by locking nut (7)
(4) radial direction, the termination of mobile cylinder body (8) connects charge valve (11)；Piston (6) is installed in described stationary housing (4),
The second sealing ring (5) is installed between described piston (6) and stationary housing (4).
2. one kind according to claim 1 is adjustable suppresses servo valve self-oscillation device, it is characterised in that：Described
Two sealing rings (5) are X-shaped sealing ring.
3. one kind according to claim 1 and 2 is adjustable suppresses servo valve self-oscillation device, it is characterised in that：It is described
Mobile cylinder body (8) termination and charge valve (11) between using being threadedly coupled, junction is sealed with the 4th sealing ring (10).
4. one kind according to claim 3 is adjustable suppresses servo valve self-oscillation device, it is characterised in that：Described work
Limited block (12) is installed on stationary housing (4) in the middle part of plug (6) movement travel, described limited block (12) stretches into stationary housing
(4) in, the movement travel to piston (6) is spacing；The circular hole of described limited block (12) is connected with filter screen (13) interference fit.
5. one kind according to claim 3 is adjustable suppresses servo valve self-oscillation device, it is characterised in that：Described
Three sealing rings (9) are O-ring seal.
6. one kind according to claim 3 is adjustable suppresses servo valve self-oscillation device, it is characterised in that：Described
Four sealing rings (10) are O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094802.7A CN106762995B (en) | 2017-02-22 | 2017-02-22 | A kind of adjustable inhibition servo valve self-oscillation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094802.7A CN106762995B (en) | 2017-02-22 | 2017-02-22 | A kind of adjustable inhibition servo valve self-oscillation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106762995A true CN106762995A (en) | 2017-05-31 |
| CN106762995B CN106762995B (en) | 2018-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710094802.7A Active CN106762995B (en) | 2017-02-22 | 2017-02-22 | A kind of adjustable inhibition servo valve self-oscillation device |
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| Country | Link |
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| CN (1) | CN106762995B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2758639A1 (en) * | 1977-12-29 | 1979-07-05 | Teves Gmbh Alfred | Flow control unit for hydraulic system - has fluid filter position within blind bore of piston including radial outlet bores |
| CN1251883A (en) * | 1998-10-21 | 2000-05-03 | 杨世祥 | Long-life hydraulic energy accumulator with float valve |
| CN102271832A (en) * | 2008-12-05 | 2011-12-07 | 西门子Vai金属科技有限责任公司 | Method and device for the semi-active reduction of pressure oscillations in a hydraulic system |
| CN103079769A (en) * | 2010-08-31 | 2013-05-01 | 阿特拉斯·科普柯凿岩设备有限公司 | Hydraulic impact mechanism for use in equipment for treating rock and concrete |
| CN203146453U (en) * | 2013-02-07 | 2013-08-21 | 奉化市朝日液压有限公司 | Warning type piston accumulator |
| CN203926233U (en) * | 2014-07-15 | 2014-11-05 | 九江学院 | The resonant hydraulic filter of a kind of electromagnetic type automated variable rigidity |
| CN106224307A (en) * | 2016-09-20 | 2016-12-14 | 安徽工程大学 | Variable displacement automobile accumulator |
| CN206458670U (en) * | 2017-02-22 | 2017-09-01 | 中冶华天南京工程技术有限公司 | A kind of adjustable suppression servo valve self-oscillation device |
-
2017
- 2017-02-22 CN CN201710094802.7A patent/CN106762995B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2758639A1 (en) * | 1977-12-29 | 1979-07-05 | Teves Gmbh Alfred | Flow control unit for hydraulic system - has fluid filter position within blind bore of piston including radial outlet bores |
| CN1251883A (en) * | 1998-10-21 | 2000-05-03 | 杨世祥 | Long-life hydraulic energy accumulator with float valve |
| CN102271832A (en) * | 2008-12-05 | 2011-12-07 | 西门子Vai金属科技有限责任公司 | Method and device for the semi-active reduction of pressure oscillations in a hydraulic system |
| CN103079769A (en) * | 2010-08-31 | 2013-05-01 | 阿特拉斯·科普柯凿岩设备有限公司 | Hydraulic impact mechanism for use in equipment for treating rock and concrete |
| CN203146453U (en) * | 2013-02-07 | 2013-08-21 | 奉化市朝日液压有限公司 | Warning type piston accumulator |
| CN203926233U (en) * | 2014-07-15 | 2014-11-05 | 九江学院 | The resonant hydraulic filter of a kind of electromagnetic type automated variable rigidity |
| CN106224307A (en) * | 2016-09-20 | 2016-12-14 | 安徽工程大学 | Variable displacement automobile accumulator |
| CN206458670U (en) * | 2017-02-22 | 2017-09-01 | 中冶华天南京工程技术有限公司 | A kind of adjustable suppression servo valve self-oscillation device |
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|---|---|
| CN106762995B (en) | 2018-09-25 |
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