CN106762995B - A kind of adjustable inhibition servo valve self-oscillation device - Google Patents
A kind of adjustable inhibition servo valve self-oscillation device Download PDFInfo
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- CN106762995B CN106762995B CN201710094802.7A CN201710094802A CN106762995B CN 106762995 B CN106762995 B CN 106762995B CN 201710094802 A CN201710094802 A CN 201710094802A CN 106762995 B CN106762995 B CN 106762995B
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- stationary housing
- servo valve
- cylinder body
- mobile cylinder
- piston
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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)
- Servomotors (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of adjustable inhibition servo valve self-oscillation devices, belong to technical field of hydraulic pressure.The present invention includes link block and filtering mechanism；Filtering mechanism is by screw thread and is vertically mounted on link block, and link block one end is connect with integrated package, and the other end is connect with servo valve, and both 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 link block, and the other end is threadedly coupled with mobile cylinder body, and junction is sealed with third sealing ring, and mobile cylinder body is located in the radial direction of stationary housing by locking nut, and the end of mobile cylinder body connects charge valve；Piston is installed in stationary housing.The configuration of the present invention is simple, easy for installation, manufacturing cost is low, does not change mechanism, the performance of original hydraulic system, hence it is evident that the pressure oscillation for improving hydraulic system adjusts the volume of air cavity, adapts to the pressure oscillation of different operating modes, different frequency.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, are filled more specifically to a kind of adjustable inhibition servo valve self-oscillation
It sets.
Background technology
Hydraulic system is just developing towards miniaturization, integrated direction in fields such as Aeronautics and Astronautics, military affairs, hydraulic system
The components such as pump, hydraulic cylinder are integrated in integrated package, and this structure can cause hydraulic system pressure fluctuation more prominent.Hydraulic pressure system
The servo valve applied in system is particularly susceptible to this pressure oscillation disturbance and causes self-oscillation phenomenon, the self-oscillation of servo valve existing
As being commonly called as uttering long and high-pitched sounds, typically a kind of higher-order of oscillation is particularly easy to the parts such as the support in damage servo valve, and then leads to servo valve
And entire hydraulic system cannot work.For the problem in the industry cycle also in continuous research, there are no a kind of universal effective at present
Measure is thoroughly eliminated.Being directed to the common method of this phenomenon at present usually has the entire servo valve of replacement, can not only increase in this way
Addition sheet, but also be that can not eradicate phenomenon of uttering long and high-pitched sounds；Reduce the certain operating modes of system pressure under can improve this phenomenon, but can make be
The performance of system declines, and stability is not high.
Invention content
1, it to solve the problems, such as
In view of the defects existing in the prior art with deficiency, the present invention provides a kind of adjustable inhibition servo valve self-oscillations
Device, simple in structure, easy for installation, manufacturing cost is low, does not change mechanism, the performance of original hydraulic system, hence it is evident that improves hydraulic pressure system
The pressure oscillation of system adjusts the volume of air cavity, adapts to the pressure oscillation of different operating modes, different frequency.
2, technical solution
A kind of adjustable inhibition servo valve self-oscillation device, is mounted between the integrated package and servo valve of hydraulic system,
Including link block and filtering mechanism；The filtering mechanism is by screw thread and is vertically mounted on link block, the link block
One end is connect with integrated package, and the other end is connect with servo valve, and both ends junction is sealed using the first sealing ring；Described
Filtering mechanism includes stationary housing, mobile cylinder body, piston and charge valve；Described stationary housing one end connects with link block screw thread
It connects, the other end is threadedly coupled with mobile cylinder body, and junction is sealed with third sealing ring, and the mobile cylinder body passes through locking nut
It is located in the radial direction of stationary housing, the end of mobile cylinder body connects charge valve；Piston, institute are installed in the stationary housing
The second sealing ring is installed between the piston and stationary housing stated；Stationary housing corresponds to the portion of the piston motion middle of stroke
Divide and limited block is installed, the limited block stretches into stationary housing, is limited to the movement travel of piston；The limited block
Circular hole is connected with strainer interference fit, and strainer is for the impurity pollution stationary housing and piston outside avoiding device.
As a further improvement on the present invention, second sealing ring is X-shaped sealing ring.
As a further improvement on the present invention, using being threadedly coupled between the mobile cylinder body end head and charge valve, even
Place is met to be sealed with the 4th sealing ring.
As a further improvement on the present invention, the third sealing ring is O-ring seal.
As a further improvement on the present invention, the 4th sealing ring is O-ring seal.
3, advantageous effect
Compared with the prior art, beneficial effects of the present invention are：
The adjustable inhibition servo valve self-oscillation device of one kind of the present invention, simple in structure, easy for installation, manufacturing cost
It is low, do not change mechanism, the performance of original hydraulic system, fluid pressure line and filtering mechanism, which can act as, in link block inhibits fluid pressure
Fluctuation effect, hence it is evident that the pressure oscillation for improving hydraulic system adjusts the volume of air cavity, adapts to different operating modes, different frequency
Pressure oscillation, functional reliability are high.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the close-up schematic view of filtering mechanism in Fig. 1；
Fig. 3 is the perspective cross section schematic diagram of the present invention.
In figure：1, link block；2, filtering mechanism；3, the first sealing ring；4, stationary housing；5, the second sealing ring；6, piston；
7, locking nut；8, mobile cylinder body；9, third sealing ring；10, the 4th sealing ring；11, charge valve；12, limited block；13, strainer；
14, the 5th sealing ring.
Specific implementation mode
The present invention is further described below with reference to specific embodiments and the drawings：
Embodiment 1
As shown in Figs. 1-3, the adjustable inhibition servo valve self-oscillation device of one kind of the present embodiment, is mounted on hydraulic system
Integrated package and servo valve between, including link block 1 and filtering mechanism 2；Filtering mechanism 2 is by screw thread and is vertically mounted on connection
On block 1,1 one end of link block is connect with integrated package, and the other end is connect with servo valve, and both ends junction uses the first sealing ring 3
It is sealed；Above-mentioned filtering mechanism 2 includes stationary housing 4, mobile cylinder body 8, piston 6 and charge valve 11；4 one end of stationary housing with
Link block 1 is threadedly coupled, and the other end is threadedly coupled with mobile cylinder body 8, and junction is sealed with third sealing ring 9, third sealing ring 9
For O-ring seal, above-mentioned mobile cylinder body 8 is located in the radial direction of stationary housing 4 by locking nut 7, and mobile cylinder body 8 can be
The radial direction of stationary housing 4 moves, and the ends screw of mobile cylinder body 8 connects charge valve 11, the 4th sealing ring 10 of junction
Sealing, the 4th sealing ring 10 are O-ring seal, and above-mentioned charge valve 11 is the check valve with unidirectional aerification function；Above-mentioned fixation
Piston 6 is installed in cylinder body 4, the second sealing ring 5 is installed between piston 6 and stationary housing 4, the second sealing ring 5 seals for X-type
Circle；The part that above-mentioned stationary housing 4 corresponds in the middle part of 6 movement travel of the piston is equipped with limited block 12, and limited block 12 stretches into
In stationary housing 4, the movement travel of piston 6 is limited；The circular hole of limited block 12 is connected with the interference fit of strainer 13, avoiding device
Outer impurity 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, 6 centre of piston and stationary housing by piston 6
4 composition C chambers, C chambers are communicated with air, if liquids and gases leak, can only be penetrated into the C chambers that piston 6 is communicated with air,
It may insure that gas end is mutually isolated with fluid end.
In use, before hydraulic work system, the gas of rated pressure is filled with into B chambers by charge valve 11；Hydraulic pressure
When system boot, A chambers are full of fluid, and pressure is equal with the pressure of hydraulic system, and fluid pushes piston 6 to be moved to B chambers, B chamber gas
Body compresses, and pressure increases, until A chambers, B cavity pressures are equal；Rotor cycle movement with pump and the instruction of hydraulic system letter
Number variation, oil liquid pressure will produce fluctuation, and when A cavity pressures increase, piston 6 moves the balance for reaching new to B chambers, conversely, working as A
When cavity pressure is reduced, piston 6 moves the balance for reaching new to A chambers, achievees the effect that filtering to hydraulic system pressure fluctuation；Work as filter
When wave effect does not eliminate the self-oscillation of servo valve, filtering mechanism 2 can be replaced or screw the appearance that mobile cylinder body 8 changes B chambers
Product and then the filter effect for optimizing different frequency pressure oscillation.
Integrated package in the present embodiment, link block 1 are respectively equipped with four pipelines in servo valve, are oil feed line, oil return pipe
Road, A pipelines and B pipelines；Wherein：Oil feed line, oil return line, A pipelines, B pipelines in integrated package respectively in link block 1
Oil feed line, oil return line, A pipelines, B pipelines communicate, the oil feed line, oil return line, A pipelines, B pipelines in link block 1 point
It is not communicated with oil feed line, oil return line, A pipelines, the B pipelines in servo valve.It is as follows that fluid flows to process：When oil inlet, system
Oil feed line of the high pressure oil out of integrated package flows to the oil feed line in link 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 link block 1
Road, further towards A pipelines in integrated package；When oil return, B pipeline of the fluid out of integrated package flows to B pipelines in link block 1, into
One step flows to B pipelines in servo valve, further towards oil return line in servo valve, further towards oil return line in link block 1,
And then oil return line in integrated package is flowed to again, flow back to fuel tank.When servo valve input current polarity is opposite, flow to this similarly.
Right angle setting filtering mechanism 2 on one in four pipelines or several pipelines, junction are sealed with the 5th sealing ring 14,
Link block 1 can be filtered with pipeline vessel, inhibit servo valve self-oscillation phenomenon.
The adjustable inhibition servo valve self-oscillation device of one kind of the present embodiment, simple in structure, easy for installation, manufacturing cost
It is low, do not change mechanism, the performance of original hydraulic system, fluid pressure line and filtering mechanism, which can act as, in link block inhibits fluid pressure
Fluctuation effect, hence it is evident that the pressure oscillation for improving hydraulic system adjusts the volume of air cavity, adapts to different operating modes, different frequency
Pressure oscillation, functional reliability are high.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (5)
1. a kind of adjustable inhibition servo valve self-oscillation device, is mounted between the integrated package and servo valve of hydraulic system,
It is characterized in that：Including link block (1) and filtering mechanism (2)；The filtering mechanism (2) by screw thread and is vertically mounted on connection
On block (1), the link block (1) one end is connect with integrated package, and the other end is connect with servo valve, and both ends junction uses the
One sealing ring (3) is sealed；The filtering mechanism (2) includes stationary housing (4), mobile cylinder body (8), piston (6) and fills
Air valve (11)；Described stationary housing (4) one end is threadedly coupled with link block (1), and the other end connects with mobile cylinder body (8) screw thread
It connects, junction is sealed with third sealing ring (9), and the mobile cylinder body (8) is located in stationary housing by locking nut (7)
(4) radial direction, the end connection charge valve (11) of mobile cylinder body (8)；Installation piston (6) in the stationary housing (4),
The second sealing ring (5) is installed between the piston (6) and stationary housing (4)；Stationary housing (4) corresponds to the piston
(6) part in the middle part of movement travel is equipped with limited block (12), and the limited block (12) stretches into stationary housing (4), to work
Fill in the movement travel limit of (6)；The circular hole of the limited block (12) is connected with strainer (13) interference fit, and strainer (13) is used for
Impurity pollution stationary housing (4) outside avoiding device and piston (6).
2. the adjustable inhibition servo valve self-oscillation device of one kind according to claim 1, it is characterised in that：Described
Two sealing rings (5) are X-shaped sealing ring.
3. the adjustable inhibition servo valve self-oscillation device of one kind according to claim 1 or 2, it is characterised in that：It is described
Mobile cylinder body (8) end and charge valve (11) between using being threadedly coupled, junction is sealed with the 4th sealing ring (10).
4. the adjustable inhibition servo valve self-oscillation device of one kind according to claim 1, it is characterised in that：Described
Three sealing rings (9) are O-ring seal.
5. the adjustable inhibition servo valve self-oscillation device of one kind according to claim 3, 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 CN106762995A (en) | 2017-05-31 |
| CN106762995B true 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN106762995B (en) |
Family Cites Families (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 |
| AT507087B1 (en) * | 2008-12-05 | 2010-02-15 | Siemens Vai Metals Tech Gmbh | METHOD AND DEVICE FOR THE SEMI-ACTIVE REDUCTION OF PRESSURE VIBRATIONS IN A HYDRAULIC SYSTEM |
| SE535149C2 (en) * | 2010-08-31 | 2012-05-02 | Atlas Copco Rock Drills Ab | Hydraulic percussion for use in rock or concrete cutting equipment |
| 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 |
| CN106224307B (en) * | 2016-09-20 | 2017-12-12 | 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
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| CN106762995A (en) | 2017-05-31 |
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