CN206458670U - 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
- CN206458670U CN206458670U CN201720158141.5U CN201720158141U CN206458670U CN 206458670 U CN206458670 U CN 206458670U CN 201720158141 U CN201720158141 U CN 201720158141U CN 206458670 U CN206458670 U CN 206458670U
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- China
- Prior art keywords
- servo valve
- stationary housing
- cylinder body
- mobile cylinder
- sealing ring
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses the adjustable suppression servo valve self-oscillation device of one kind, belong to technical field of hydraulic pressure.The utility model includes contiguous block and filtering mechanism；Filtering mechanism, which is connected through a screw thread, to be 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.The utility model is simple in construction, easy for installation, and manufacturing cost is low, 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 utility model is related to technical field of hydraulic pressure, more specifically to the adjustable servo valve that suppresses of one kind from exciting
Swing device.
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 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, and the self-oscillation of servo valve shows
As being commonly called as uttering long and high-pitched sounds, typically a kind of higher-order of oscillation is particularly easy to damage the part such as support in servo valve, and then cause servo valve
And whole hydraulic system can not work.The current problem is in the industry cycle also in continuous 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 can not eradicate phenomenon of uttering long and high-pitched sounds；Reduction some operating modes of system pressure under can improve this phenomenon, but can make be
The hydraulic performance decline of system, stability is not high.
Utility model content
1st, the problem of solving
The shortcomings and deficiencies existed for prior art, the utility model provides a kind of adjustable suppression servo valve self-excitation
Oscillation device, simple in construction, easy for installation, manufacturing cost is low, does not change mechanism, the performance of original hydraulic system, hence it is evident that improve liquid
The pressure oscillation of pressure 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, which is connected through a screw thread, to be 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, and 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 further improvement of the utility model, the second described sealing ring is X-shaped sealing ring.
As further improvement of the utility model, connected between described mobile cylinder body end head and charge valve using screw thread
Connect, junction is sealed with the 4th sealing ring.
As further improvement of the utility model, install limited on the stationary housing of described piston movement middle of stroke
Position block, described limited block is stretched into stationary housing, and the movement travel to piston is spacing；The circular hole and filter screen of described limited block
Interference fit connection.
As further improvement of the utility model, the 3rd described sealing ring is O-ring seal.
As further improvement of the utility model, the 4th described sealing ring is O-ring seal.
3rd, beneficial effect
Compared to prior art, the beneficial effects of the utility model are：
The adjustable suppression servo valve self-oscillation device of one kind of the present utility model, it is simple in construction, it is easy for installation, it is manufactured into
This is low, does not change fluid pressure line and filtering mechanism in mechanism, the performance of original hydraulic system, contiguous block and can act as suppression fluid
Pressure oscillation effect, hence it is evident that improve the pressure oscillation of hydraulic system, adjusts 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 present utility model；
Fig. 2 is the close-up schematic view of filtering mechanism in Fig. 1；
Fig. 3 is perspective cross section schematic diagram of the present utility model.
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.
Embodiment
The utility model 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
It 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 on stationary housing 4 in the middle part of the above-mentioned movement travel of piston 6, limited block 12 stretches into stationary housing 4
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
Pollute stationary housing 4 and piston 6.
The cavity that stationary housing 4 is formed with mobile cylinder body 8 is divided into the middle of A chambers and B chambers, piston 6 and stationary housing by piston 6
4 composition C chambers, C chambers are communicated with air, if seepage occurs for liquids and gases, 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
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 chamber gas
Body compresses, pressure increase, until A chambers, B cavity pressures are equal；Rotor cycle motion and the instruction of hydraulic system letter with pump
Number change, oil liquid pressure can produce fluctuation, and when A cavity pressures increase, piston 6 is moved to B chambers reaches new balance, conversely, working as A
When cavity pressure is reduced, piston 6 is moved to A chambers reaches new balance, and the effect for reaching filtering is fluctuated to hydraulic system pressure；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 for optimizing different frequency pressure oscillation.
Integrated package in the present embodiment, contiguous block 1, it is respectively equipped with four pipelines in servo valve, is 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
Oil feed line, return line, A pipelines, B pipelines are communicated, oil feed line, return line, A pipelines, B pipelines point in contiguous block 1
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
Hydraulic oil flows to the oil feed line in contiguous block 1 from the oil feed line in integrated package, 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, fluid flows to B pipelines in contiguous block 1 from the B pipelines in integrated package, 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 to 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 in construction, easy for installation, manufacturing cost
It is low, do not change fluid pressure line and filtering mechanism in mechanism, the performance of original hydraulic system, contiguous block and can act as suppression fluid pressure
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.
Schematically the utility model and embodiments thereof are described above, the description does not have restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area
Those of ordinary skill enlightened by it, do not departing from the case that the utility model creates objective, designed without creative
The frame mode similar to the technical scheme and embodiment, all should belong to protection domain of the present utility model.
Claims (6)
1. a kind of adjustable suppression 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 is used
First sealing ring (3) is sealed；Described filtering mechanism (2) include 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 connection charge valve (11) of mobile cylinder body (8)；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 to suppress 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 or 2 is adjustable to suppress 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 to suppress 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 to suppress 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 to suppress 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 |
|---|---|---|---|
| CN201720158141.5U CN206458670U (en) | 2017-02-22 | 2017-02-22 | A kind of adjustable suppression servo valve self-oscillation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720158141.5U CN206458670U (en) | 2017-02-22 | 2017-02-22 | A kind of adjustable suppression servo valve self-oscillation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458670U true CN206458670U (en) | 2017-09-01 |
Family
ID=59690421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720158141.5U Withdrawn - After Issue CN206458670U (en) | 2017-02-22 | 2017-02-22 | A kind of adjustable suppression servo valve self-oscillation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762995A (en) * | 2017-02-22 | 2017-05-31 | 中冶华天南京工程技术有限公司 | A kind of adjustable suppression servo valve self-oscillation device |
| CN114458659A (en) * | 2022-02-16 | 2022-05-10 | 南华大学 | High-pressure gas pressure micro-adjusting device |
-
2017
- 2017-02-22 CN CN201720158141.5U patent/CN206458670U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762995A (en) * | 2017-02-22 | 2017-05-31 | 中冶华天南京工程技术有限公司 | A kind of adjustable suppression servo valve self-oscillation device |
| CN114458659A (en) * | 2022-02-16 | 2022-05-10 | 南华大学 | High-pressure gas pressure micro-adjusting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170901 Effective date of abandoning: 20180925 |
|
| AV01 | Patent right actively abandoned |