CN103144766B - Electric hydraulic pressure servo valve - Google Patents
Electric hydraulic pressure servo valve Download PDFInfo
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- CN103144766B CN103144766B CN201310075342.5A CN201310075342A CN103144766B CN 103144766 B CN103144766 B CN 103144766B CN 201310075342 A CN201310075342 A CN 201310075342A CN 103144766 B CN103144766 B CN 103144766B
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Abstract
The invention relates to an electric hydraulic pressure servo valve, wherein two ends of a nozzle in a torque motor are respectively communicated with two ends of a slide valve control cavity through the outlet of a throttling hole; the brake port of the electric hydraulic pressure servo valve is communicated with that of a slide valve; a brake port oil filter is connected in series between the brake ports of the slide valve and the electric hydraulic pressure servo valve; the oil inlet of a brake port pressure sensor is connected to an oil path between the brake port of the slide valve and the oil inlet of the brake port oil filter; a throttler is arranged between the oil inlet of the electric hydraulic pressure servo valve and an inlet oil filter; the oil inlet of an oil inlet pressure sensor is communicated with the oil path of the inlet oil filter; the oil inlet of a hydraulic control valve is communicated with that of the slide valve; the control cavity of the hydraulic control valve is communicated with the oil path of the oil return port of the slide valve; and the oil outlet of the hydraulic control valve is also communicated with the oil path of the oil return port of the slide valve. According to the electric hydraulic pressure servo valve, the damage caused by pollutants in oil fluid is prevented effectively, so that the working stability and the working reliability of the servo valve are improved; and the inlet pressure signal and the outlet pressure signal of the servo valve can be provided, so that the working stability and the working reliability of the servo valve are improved.
Description
Technical field
This technological invention relates to a kind of Electric hydraulic pressure servo valve of airplane brake system control presssure.
Background technology
The basic comprising of present generation aircraft electronic anti-skid braking system comprises wheel spin-up transducer, electronic anti-breaking brake-control box and anti-sliding control annex.In order to meet control overflow, in airplane wheel brake system, electronic anti-skid braking system adopts Electric hydraulic pressure servo valve as anti-sliding control annex usually, implements accurately to control, prevent quick-fried tire of stopping, shorten braking distance wheel braking pressure.Electric hydraulic pressure servo valve is primarily of torque motor electric part and spray block valve, slide valve hydraulic componentry composition.Usually, Electric hydraulic pressure servo valve adopts twin flapper-and-nozzle valve and double slide valve structure.In addition, existing Electric hydraulic pressure servo valve is also provided with check valve, safety device and the auxiliary devices such as safety valve and oil return solenoid valve.Check valve be arranged on fuel supply chamber and brake chamber between, effect be when spool block and cannot pine in a flash, as long as chaufeur releasing of brake pedal, check valve is opened, fluid bypass guiding valve, can unclamp or remove brake.The effect of safety valve ensures that the pressure of Electric hydraulic pressure servo valve intracavity liquid force feed is within security clearance limit.The effect of oil return solenoid valve is the oil return line opening or closing oil back chamber on demand.
Electric hydraulic pressure servo valve is accurate annex, and the working clearance requires high, if in use hydraulic oil is polluted, in oil, pollutants very easily causes Hydraulic Elements motion moment clamping stagnation or stuck, causes the fault that can not get off the brakes, or quick-fried tire of stopping, make aircraft deflect away from runway, jeopardize flight safety.Pollutants from the oil inlet of Electric hydraulic pressure servo valve, therefore, in order to prevent Electric hydraulic pressure servo valve internal contamination, usually except arranging total oil-filtering apparatus (oil filter) at oil inlet, also may arrange oil-filtering apparatus before nozzle.But use and find, the oil contaminant in wheel brake also may scurry into Electric hydraulic pressure servo valve.Brake mouth due to Electric hydraulic pressure servo valve is not considered to arrange oil-filtering apparatus, and when getting off the brakes, the fluid reverse flow pollution threat in brake gear serviceability and the reliability of Electric hydraulic pressure servo valve.Hydraulic efficiency pressure system can not keep permanent steady voltage supply, and charge oil pressure fluctuation can affect Electric hydraulic pressure servo valve working stability.Therefore, need to improve design, improve the inherent reliability of Electric hydraulic pressure servo valve.From the development that brake controls and monitors, brake system does not simply need to the brake pressure signal that passenger cabin provides and indicates brake valve to export, preferably can also provide the brake pressure signal that Electric hydraulic pressure servo valve exports, supplied for electronic antiskid braking control box and FDR system use.Some types need Electric hydraulic pressure servo valve itself can provide inlet pressure signal, and supplied for electronic antiskid braking control box uses.In addition, when antiskid function inefficacy rear braking, require the maximum brake pressure that Electric hydraulic pressure servo valve exports, far below maximum brake pressure when having an antiskid function, such as, the brake pressure that after anti-skidding inefficacy, Electric hydraulic pressure servo valve exports is not more than 65% of the maximum brake pressure of normal braking system, the wrap up alighting gear to avoid brake pressure excessive.
The oil feed line of Electric hydraulic pressure servo valve arranges throttling device can reduce or eliminate pressure pulsation.Pressure-sensing device is set on the oil feed line of Electric hydraulic pressure servo valve or on delivery conduit and can experiences and provide brake line hydraulic oil pressure force signal.The delivery conduit of Electric hydraulic pressure servo valve arranges oil-filtering apparatus can prevent the fluid reverse flow in brake gear from polluting.Element, the annexes such as throttling device, pressure-sensing device and oil-filtering apparatus, can be arranged on brake line as separate accessories.In order to improve system maintenance, expect independently element, annex integrate, to greatest extent by modular design manufacture Electric hydraulic pressure servo valve.
Summary of the invention
For overcome exist in prior art can not meet the deficiency that aircraft brake anti-sliding control requires, the present invention proposes a kind of Electric hydraulic pressure servo valve.
In the present invention, the two ends of the nozzle in torque motor are communicated with the two ends of guiding valve control chamber respectively by the outlet of cutoff port.Electric hydraulic pressure servo valve brake mouth is communicated with the brake mouth of guiding valve by oil circuit, and brake mouth is oily filters the brake mouth that is connected in described guiding valve and Electric hydraulic pressure servo valve is braked between mouth.Housing is fixed with brake mouth pressure sensor, and on the oil inlet of this brake mouth pressure sensor brake mouth that is connected to described guiding valve by an oil circuit and the oily oil circuit filtered between oil inlet of brake mouth.Air restrictor is serially connected with between Electric hydraulic pressure servo valve oil inlet and imported oil are filtered.Inlet pressure sensor is fixed on housing, and the oil inlet of this inlet pressure sensor is communicated with the oil circuit that imported oil filters exit by an oil circuit.The oil inlet of pilot operated valve device is communicated with the oil inlet of guiding valve by oil circuit; The control chamber of pilot operated valve device is communicated with by the oil circuit of oil circuit with guiding valve return opening; The oil outlet of pilot operated valve device is also communicated with the oil circuit of guiding valve return opening.
The oil inlet that oil inlet and the oil outlet of described air restrictor are filtered with Electric hydraulic pressure servo valve oil inlet and imported oil is respectively communicated with.
The oil circuit of described guiding valve return opening is divided into two, and wherein an oil circuit is communicated with the oil inlet of oil return solenoid valve.Another oil circuit is communicated with the oil inlet of safety valve.
The oil circuit of oil return solenoid valve oil outlet and the oil circuit of safety valve oil outlet all cross with the outlet oil circuit of Electric hydraulic pressure servo valve return opening, oil return solenoid valve oil outlet is communicated with Electric hydraulic pressure servo valve return opening with safety valve oil outlet, thus the return opening achieving guiding valve is communicated with the Electric hydraulic pressure servo valve return opening on housing by oil circuit.
Check valve, between Electric hydraulic pressure servo valve oil inlet oil circuit and Electric hydraulic pressure servo valve brake mouth oil circuit, forms a bypass channel.The opening direction of described check valve is against brake system oil-feed direction.The oil outlet of check valve is communicated with by the oil circuit of oil circuit with guiding valve oil inlet; The oil inlet of check valve is communicated with by oil circuit and the Electric hydraulic pressure servo valve oil circuit that mouth and guiding valve brake between mouth that brakes.
The present invention, on prior art basis, increases and perfect Electric hydraulic pressure servo valve.At Electric hydraulic pressure servo valve oil inlet, throttling device and pressure-sensing device are set; At Electric hydraulic pressure servo valve oil outlet, oil-filtering apparatus and pressure-sensing device are set; Between Electric hydraulic pressure servo valve oil inlet and return opening, by pass valve is set.
Use wheel braking after aircraft landing, if due to airstrip wet and slippery, enough ground attachment coefficients can not be provided, brake machine wheel may occur skid.When electronic anti-breaking brake-control box detects this situation by wheel spin-up transducer, electronic anti-breaking brake-control box sends to Electric hydraulic pressure servo valve the anti-skid control signal that gets off the brakes.Controlling electric current makes the magnetic field of the torque motor of Electric hydraulic pressure servo valve change, produce deflection moment of torsion, thus the baffle plate of the Nozzle flapper valve being originally positioned at meta is deflected, two nozzle chambers produce difference of pressure, and this difference of pressure acts on the ring section at spool two ends of guiding valve, and spool is moved, link up brake mouth and return opening, brake pressure is declined, prevents wheel from skidding or quick-fried tire of stopping, improve braking efficiency.Under antiskid function, the energising of oil return solenoid valve is connected, and oil return solenoid valve is opened.The anti-skid control signal that gets off the brakes reduces or removes, and the delivery pressure of Electric hydraulic pressure servo valve recovers to increase.In not anti-skidding situation, Electric hydraulic pressure servo valve only uses as a passage.Delivery pressure and the received current of Electric hydraulic pressure servo valve are proportional.
When antiskid function inefficacy rear braking, the power-off of oil return solenoid valve, makes the oil return line of oil back chamber close.By pass valve is made up of pilot operated valve device and safety valve.When the pressure of oil back chamber reaches certain numerical value, such as, when being greater than 2MPa, the spool that hydraulic coupling promotes pilot operated valve device moves, and opens oil inlet, the input pressure of Electric hydraulic pressure servo valve is switched to safety valve.Safety valve forms primarily of valve base, steel ball and pressure spring.When the input pressure of Electric hydraulic pressure servo valve meets or exceeds safety valve unlatching specified value, safety valve opens pressure release, ensure to export the suitable brake pressure being not more than the maximum brake pressure of normal braking system, the wrap up alighting gear to avoid brake pressure excessive.Now, if the input pressure of Electric hydraulic pressure servo valve is lower than opening pressure of safety valve, arranged at safety valve in closed condition, the delivery pressure of nonintervention Electric hydraulic pressure servo valve.The maximum brake pressure of safety valve restriction, can be adjusted by pressure spring.
Pressure sensor is primarily of end instr, intermediate transfer link, signal converter composition.End instr is experienced fluid pressure and is deformed, and this pressure signal flows to signal converter through intermediate transfer element, and pressure signal is converted to electric signal and is supplied to electronic anti-breaking brake-control box and FDR system use by signal converter.
Throttling device is generally multiple-piece throttling device, and fluid by the orifice restriction on flow regulator pieces, thus reduces fluctuation of pressure, stablizes charge oil pressure.
The present invention is a kind of improvement antipollution degree and working stability, the Electric hydraulic pressure servo valve of the modular aircraft electronic anti-skid brake system (ABS) control presssure that integrated pressure sensitive element, air restrictor are integrated.The present invention has good working stability and reliability, and have entrance pressure and outlet pressure signal are provided, and when antiskid function inefficacy rear braking, can the suitable brake pressure of the maximum brake pressure of export-restriction, the function of wrap up alighting gear to avoid brake pressure excessive.In addition, the Electric hydraulic pressure servo valve of this technological invention, will independently element, annex integrate to greatest extent, by modular design manufacture, and maintenance easy to use.
The present invention achieves following effect:
Effectively prevent the hazards of pollutants in fluid, improve servovalve working stability and reliability;
Servovalve entrance pressure and outlet pressure signal can be provided, supplied for electronic antiskid braking control box and the equipment use needing this signal;
Not by the impact of entrance pressure change, improve servovalve working stability and reliability;
When antiskid function inefficacy rear braking, the suitable brake pressure being not more than the maximum brake pressure of normal braking system can be exported, the wrap up alighting gear to avoid brake pressure excessive;
Independently element, annex will integrate to greatest extent, manufacture Electric hydraulic pressure servo valve by modular design.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Electric hydraulic pressure servo valve of this technological invention.In figure:
1. Electric hydraulic pressure servo valve oil inlet; 2. air restrictor; 3. imported oil filter; 4. inlet pressure sensor; 5. oil return solenoid valve; 6. the mouth oil that brakes is filtered; 7. Electric hydraulic pressure servo valve brake mouth; 8. brake mouth pressure sensor; 9. Electric hydraulic pressure servo valve return opening; 10. check valve; 11. safety valves; 12. pilot operated valve device; 13. guiding valves; 14. cutoff ports; 15. torque motor oil filters; 16. nozzles; 17. torque motors; 18. housings.
Detailed description of the invention
As shown in Figure 1.The present embodiment is a kind of Electric hydraulic pressure servo valve, improvement is carried out to prior art and integrated after obtain.
The present embodiment comprises Electric hydraulic pressure servo valve oil inlet 1, air restrictor 2, imported oil filter 3, inlet pressure sensor 4, oil return solenoid valve 5, brake mouth oil filter 6, Electric hydraulic pressure servo valve brake mouth 7, brake mouth pressure sensor 8, Electric hydraulic pressure servo valve return opening 9, check valve 10, safety valve 11, pilot operated valve device 12, guiding valve 13, and torque motor 17.Described components and parts are integrated on housing 18, are connected by corresponding oil circuit.
Torque motor 17 adopts prior art, is fixed on the side of housing 18.The two ends of the nozzle 16 in described torque motor are communicated with the upper outlet being positioned at torque motor oil and filtering two ends cutoff port 14 respectively by oil circuit.The lower outlet of described cutoff port 14 is communicated with respectively by the two ends of oil circuit with guiding valve 13 control chamber.Electric hydraulic pressure servo valve brake mouth 7 is communicated with the brake mouth of guiding valve 13 by oil circuit, and brake mouth is oily to be filtered 6 and be connected in the brake mouth of described guiding valve and Electric hydraulic pressure servo valve is braked between mouth 7.Housing 18 is fixed with brake mouth pressure sensor 8, and on the oil inlet of this brake mouth pressure sensor 8 brake mouth that is connected to described guiding valve by an oil circuit and the oily oil circuit filtered between 6 oil inlets of brake mouth.
Between Electric hydraulic pressure servo valve oil inlet 1 and imported oil filter 3, be serially connected with air restrictor 2, and the oil inlet that the oil inlet of described air restrictor 2 and oil outlet filter 3 with Electric hydraulic pressure servo valve oil inlet 1 and imported oil is respectively communicated with.The oil circuit that imported oil filters 3 oil outlets is divided into two, and wherein an oil circuit is communicated with the oil inlet that torque motor oil filters 15, and another oil circuit is communicated with the oil inlet of guiding valve 13.Inlet pressure sensor 4 is fixed on housing 18, and the oil inlet of this inlet pressure sensor is communicated with the oil circuit that imported oil filters 3 exits by an oil circuit.
The oil circuit of the return opening of guiding valve 13 is divided into two, and wherein an oil circuit is communicated with the oil inlet of oil return solenoid valve 5.Another oil circuit is communicated with the oil inlet of safety valve 11.The oil circuit of oil return solenoid valve 5 oil outlet and the oil circuit of safety valve oil outlet all cross with the outlet oil circuit of return opening 9, oil return solenoid valve 5 oil outlet is communicated with return opening 9 with safety valve oil outlet, thus the return opening achieving guiding valve 13 is communicated with the Electric hydraulic pressure servo valve return opening 9 on housing by oil circuit.Safety valve 11 is fixed on housing 18.
The oil inlet of pilot operated valve device 12 is communicated with by the oil inlet of oil circuit with guiding valve 13; The control chamber of pilot operated valve device 12 is communicated with by the oil circuit of oil circuit with guiding valve 13 return opening; The oil outlet of pilot operated valve device 12 is also communicated with the oil circuit of guiding valve 13 return opening.
Check valve 10 is fixed on housing 18, between Electric hydraulic pressure servo valve oil inlet 1 oil circuit and Electric hydraulic pressure servo valve brake mouth 7 oil circuit, forms a bypass channel.The opening direction of described check valve 10 is against brake system oil-feed direction.The oil outlet of check valve 10 is communicated with by the oil circuit of oil circuit with guiding valve 13 oil inlet; The oil inlet of check valve 10 is communicated with by oil circuit and the Electric hydraulic pressure servo valve oil circuit that mouth 7 and guiding valve brake between mouth that brakes.
Connection between torque motor 17 and guiding valve 13 adopts prior art.
In the present embodiment, air restrictor 2, imported oil filter 3, inlet pressure sensor 4, oil return solenoid valve 5, brake mouth oil filter 6, brake mouth pressure sensor 8, check valve 10, safety valve 11, pilot operated valve device 12, guiding valve 13, and torque motor 17 all adopts the finished parts of prior art.
The electrical connecting wires of torque motor 17, oil return solenoid valve 5, inlet pressure sensor 4, brake mouth pressure sensor 8 is by wire and electronic anti-breaking brake-control box electric link.
In the present embodiment, torque motor, oil return solenoid valve receive the control electric signal that electronic anti-breaking brake-control box sends.Pressure-sensing device converts hydraulic pressure signal to electric signal, is supplied to electronic anti-breaking brake-control box and FDR system use.
Air restrictor 2 is arranged on electro-hydraulic pressure servo oil inlet 1 oil circuit, adopts multiple-piece air restrictor, utilizes orifice restriction principle, reduces fluctuation of pressure, stablizes charge oil pressure.Then be imported oil filter 3, adopt the filter of high precision filter oil, such as, nominal value is the oil filter of 5 ~ 10 μ, ensures that the hydraulic oil entering Electric hydraulic pressure servo valve inside has required cleanliness level.Oil circuit in housing 18, oilhole, passage, by machine up as drilling, or additive method, as spark-erosion machining forms.Come oily enter Electric hydraulic pressure servo valve after, after air restrictor 2, be divided into two tunnels: one road flow into torque motor oil filter 15, through torque motor oil filter 15 filtration, hydraulic oil enters nozzle 16 again by cutoff port 14, sprays to the baffle plate of torque motor 17 from nozzle 16; Another road flows into guiding valve 13.Brake mouth oil filter 6 is set at Electric hydraulic pressure servo valve brake mouth 7 place, prevents the pollutants reverse flow of the fluid in brake gear from polluting.Adopt oil filter filtering accuracy and imported oil filter 3 substantially identical.Because guiding valve pair controls by positive overlap amount the cavity pressure that brakes, when guiding valve operationally blocks, brake cavity pressure will remain unchanged, and cannot stop by pine.Therefore, between fuel supply chamber and brake chamber, check valve 10 is housed, when spool block and cannot pine in a flash, as long as make system charge oil pressure reduce, brake cavity pressure will higher than charge oil pressure, and check valve 10 is opened, hydraulic oil is without guiding valve 13, namely " short circuit ", oil is discharged, releasing of brake in brake chamber.Inlet pressure sensor 4 and brake mouth pressure sensor 8, be separately positioned on Electric hydraulic pressure servo valve oil inlet 1 oil circuit and Electric hydraulic pressure servo valve brake mouth 7 oil circuit, fixed by appropriate ways, such as, with the spiral marking connection of O-ring seal, experience hydraulic pressure size.Inlet pressure sensor 4 and brake mouth pressure sensor 8 are primarily of end instr, intermediate transfer link, signal converter composition.End instr is experienced fluid pressure and is deformed, and this pressure signal flows to signal converter through intermediate transfer element, and pressure signal is converted to electric signal and is supplied to electronic anti-breaking brake-control box and FDR system use by signal converter.
Oil return solenoid valve 5 is made up of electromagnet, priority valve and plate valve etc.Priority valve adopts steel ball valve.At powering-off state, steel ball valve and plate valve are in closed condition.Therefore, the oil return line of the oil back chamber of Electric hydraulic pressure servo valve is closed by oil return solenoid valve 5.In energising situation, electromagnet produces thrust, steel ball valve is backed down by push rod, make oil circuit open-minded, fluid flows through the supercentral aperture of plate valve, produces difference of pressure at plate valve two ends, plate valve is opened rapidly, thus, the oil return line of the oil back chamber of Electric hydraulic pressure servo valve is opened, ensures that the oil return line of Electric hydraulic pressure servo valve is unimpeded.
Pilot operated valve device 12 and safety valve 11 form by pass valve, utilize the effect of this by pass valve, make Electric hydraulic pressure servo valve have extra pressure limiting output function.Pilot operated valve device 12 is made up of parts such as spool, valve pocket, springs.Spool one end oil inlet of pilot operated valve device 12 is normally closed, but can be communicated with Electric hydraulic pressure servo valve oil inlet 1 under certain condition, and the intermediate oil inlet mouth of pilot operated valve device 12 spool is communicated with the oil back chamber of Electric hydraulic pressure servo valve with other end oil inlet.The control chamber of pilot operated valve device 12 is subject to the control of back oil cavity pressure.During antiskid function inefficacy rear braking, oil return solenoid valve 5 power-off, the oil return line of oil back chamber is closed.Such as, when the pressure of oil back chamber reaches certain numerical value, when being greater than 2MPa, the spool that hydraulic coupling promotes pilot operated valve device 12 is moved to the left, and opens oil inlet, left end oil inlet and intermediate oil inlet oral groove is led to, thus, the input pressure of the oil inlet 1 of Electric hydraulic pressure servo valve is switched to safety valve 11.If input pressure meets or exceeds safety valve 11 when opening specified value, safety valve 11 opens pressure release, ensure that brake mouth 8 delivery pressure of Electric hydraulic pressure servo valve is not more than the suitable brake pressure of the maximum brake pressure of normal braking system, the wrap up alighting gear to avoid brake pressure excessive.Now, if the input pressure of Electric hydraulic pressure servo valve is lower than safety valve 11 response pressure, safety valve 11 is in closed condition, the delivery pressure of nonintervention Electric hydraulic pressure servo valve.Safety valve 11 forms primarily of valve base, steel ball and pressure spring.The maximum brake pressure of safety valve restriction, can be adjusted by pressure spring.
Electric hydraulic pressure servo valve accepts the control current signal from electronic anti-breaking brake-control box, carry out electrically-hydraulic conversion and power gain, export and the brake pressure controlling current in proportion, and then controlling the brake pressure of wheel brake, when avoiding aircraft landing, wheel skids and quick-fried tire of stopping.Control current transitions is baffle plate displacement by torque motor 17, and baffle plate displacive transformation is become control chamber pressure reduction by nozzle 16 baffle plate, and control chamber pressure reduction changes and is enlarged into pressure output control by guiding valve 14.
Claims (5)
1. an Electric hydraulic pressure servo valve, is characterized in that, the two ends of the nozzle in torque motor are communicated with the two ends of guiding valve control chamber respectively by the outlet of cutoff port; Electric hydraulic pressure servo valve brake mouth is communicated with the brake mouth of guiding valve by oil circuit, and brake mouth is oily filters the brake mouth that is connected in described guiding valve and Electric hydraulic pressure servo valve is braked between mouth; Housing is fixed with brake mouth pressure sensor, and on the oil inlet of this brake mouth pressure sensor brake mouth that is connected to described guiding valve by an oil circuit and the oily oil circuit filtered between oil inlet of brake mouth; Air restrictor is serially connected with between Electric hydraulic pressure servo valve oil inlet and imported oil are filtered; Inlet pressure sensor is fixed on housing, and the oil inlet of this inlet pressure sensor is communicated with the oil circuit that imported oil filters exit by an oil circuit; The oil inlet of pilot operated valve device is communicated with the oil inlet of guiding valve by oil circuit; The control chamber of pilot operated valve device is communicated with by the oil circuit of oil circuit with guiding valve return opening; The oil outlet of pilot operated valve device is also communicated with the oil circuit of guiding valve return opening.
2. a kind of Electric hydraulic pressure servo valve as claimed in claim 1, it is characterized in that, the oil inlet that oil inlet and the oil outlet of described air restrictor are filtered with Electric hydraulic pressure servo valve oil inlet and imported oil is respectively communicated with.
3. a kind of Electric hydraulic pressure servo valve as claimed in claim 1, it is characterized in that, the oil circuit of described guiding valve return opening is divided into two, and wherein an oil circuit is communicated with the oil inlet of oil return solenoid valve; Another oil circuit is communicated with the oil inlet of safety valve.
4. a kind of Electric hydraulic pressure servo valve as claimed in claim 1, it is characterized in that, the oil circuit of oil return solenoid valve oil outlet and the oil circuit of safety valve oil outlet all cross with the outlet oil circuit of Electric hydraulic pressure servo valve return opening, oil return solenoid valve oil outlet is communicated with Electric hydraulic pressure servo valve return opening with safety valve oil outlet, thus the return opening achieving guiding valve is communicated with the Electric hydraulic pressure servo valve return opening on housing by oil circuit.
5. a kind of Electric hydraulic pressure servo valve as claimed in claim 1, is characterized in that, check valve, between Electric hydraulic pressure servo valve oil inlet oil circuit and Electric hydraulic pressure servo valve brake mouth oil circuit, forms a bypass channel; The opening direction of described check valve is against brake system oil-feed direction; The oil outlet of check valve is communicated with by the oil circuit of oil circuit with guiding valve oil inlet; The oil inlet of check valve is communicated with by oil circuit and the Electric hydraulic pressure servo valve oil circuit that mouth and guiding valve brake between mouth that brakes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075342.5A CN103144766B (en) | 2013-03-11 | 2013-03-11 | Electric hydraulic pressure servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075342.5A CN103144766B (en) | 2013-03-11 | 2013-03-11 | Electric hydraulic pressure servo valve |
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| Publication Number | Publication Date |
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| CN103144766A CN103144766A (en) | 2013-06-12 |
| CN103144766B true CN103144766B (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310075342.5A Expired - Fee Related CN103144766B (en) | 2013-03-11 | 2013-03-11 | Electric hydraulic pressure servo valve |
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| CN (1) | CN103144766B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925045A (en) * | 2015-06-03 | 2015-09-23 | 西安航空制动科技有限公司 | Brake valve capable of meeting brake requirement of take-off line of plane |
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| JP6138182B2 (en) * | 2015-02-20 | 2017-05-31 | 株式会社アドヴィックス | Braking device for vehicle |
| CN104787310B (en) * | 2015-04-01 | 2016-10-26 | 西安航空制动科技有限公司 | A kind of aircraft normal braking system with take-off line braking ability |
| CN104986154B (en) * | 2015-06-03 | 2017-11-03 | 西安航空制动科技有限公司 | One kind brake valve assembly |
| CN108035829B (en) * | 2017-11-08 | 2021-08-06 | 中国航发北京航科发动机控制系统科技有限公司 | Fuel control device for large passenger plane engine |
| CN109250075A (en) * | 2018-09-25 | 2019-01-22 | 陕西飞机工业（集团）有限公司 | A kind of aircraft adaptive braking servo valve module |
| CN109630489B (en) * | 2018-11-06 | 2024-02-27 | 襄阳航宇机电液压应用技术有限公司 | Electrohydraulic pressure servo valve |
| CN109760826B (en) * | 2019-01-30 | 2023-05-09 | 西安航空制动科技有限公司 | Electrohydraulic servo valve capable of being operated by liquid transmission |
| CN110206773A (en) * | 2019-06-24 | 2019-09-06 | 上海衡拓液压控制技术有限公司 | With the hydraulic lock of quick pressure releasing function in brake system |
| CN112682376B (en) * | 2020-11-26 | 2023-03-14 | 河南航天液压气动技术有限公司 | Large-flow electro-hydraulic servo valve |
| CN112709724B (en) * | 2020-12-24 | 2023-08-01 | 中航工业南京伺服控制系统有限公司 | Electrohydraulic pressure servo valve power stage structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3845992A (en) * | 1972-03-14 | 1974-11-05 | Aisin Seiki | Hydraulic pressure control apparatus |
| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
| CN2642673Y (en) * | 2003-08-05 | 2004-09-22 | 何永乐 | Pollution control device for brake system reverse flow |
| CN102616228A (en) * | 2012-04-10 | 2012-08-01 | 中国航天科技集团公司烽火机械厂 | Pressure type electro-hydraulic servo valve system for brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187638A (en) * | 1986-02-13 | 1987-08-17 | Toyota Motor Corp | Antiskid type hydraulic brake device |
-
2013
- 2013-03-11 CN CN201310075342.5A patent/CN103144766B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3845992A (en) * | 1972-03-14 | 1974-11-05 | Aisin Seiki | Hydraulic pressure control apparatus |
| CN1415509A (en) * | 2002-11-13 | 2003-05-07 | 太原理工大学 | Hydraulic arrester with capabilities of speed adjustment and soft braking |
| CN2642673Y (en) * | 2003-08-05 | 2004-09-22 | 何永乐 | Pollution control device for brake system reverse flow |
| CN102616228A (en) * | 2012-04-10 | 2012-08-01 | 中国航天科技集团公司烽火机械厂 | Pressure type electro-hydraulic servo valve system for brake |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925045A (en) * | 2015-06-03 | 2015-09-23 | 西安航空制动科技有限公司 | Brake valve capable of meeting brake requirement of take-off line of plane |
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| CN103144766A (en) | 2013-06-12 |
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