CN109630489A - A kind of Electric hydraulic pressure servo valve - Google Patents
A kind of Electric hydraulic pressure servo valve Download PDFInfo
- Publication number
- CN109630489A CN109630489A CN201811311645.1A CN201811311645A CN109630489A CN 109630489 A CN109630489 A CN 109630489A CN 201811311645 A CN201811311645 A CN 201811311645A CN 109630489 A CN109630489 A CN 109630489A
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- Prior art keywords
- valve
- oil
- oil inlet
- sliding lock
- oil return
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- 238000004891 communication Methods 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 165
- 239000010729 system oil Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of Electric hydraulic pressure servo valve, including sliding lock valve, electromagnetism oil return valve, two torque-motors and two slide valves, the outlet that the both ends of the nozzle of torque-motor pass through throttling aperture member respectively are connected to the both ends of the control chamber of a slide valve；The brake mouth of two slide valves is separately connected left and right brake chamber interface by independent oil path；The oil inlet of sliding lock valve is connected to by oil circuit with the oil inlet of each slide valve, and the control chamber of sliding lock valve passes through the oil communication of oil circuit and each slide valve oil return opening, two oil outlets and oil return orifice of sliding lock valve control chamber；One oil inlet of sliding lock valve is connected to the oil inlet of electromagnetism oil return valve, and another oil inlet is connected to the control chamber of electromagnetism oil return valve；The oil return opening and oil return orifice of electromagnetism oil return valve；Oil inlet interface is connected to by oil circuit with the oil inlet of the oil inlet of each slide valve, an oil inlet of sliding lock valve and electromagnetism oil return valve.The present invention is safe and reliable, facilitates assembly test and assembly, can be realized brake more secure and reliable.
Description
Technical field
It is specifically a kind of to be applied to anti-skid brake system (ABS) the invention belongs to a kind of electrohydraulic servo valve, guarantee that wheel is reliably stopped
Vehicle prevents the Electric hydraulic pressure servo valve of wheel skidding and locking.
Background technique
In airplane wheel brake system, electronic anti-skid braking system generallys use Electric hydraulic pressure servo valve as anti-slip control
Attachment processed implements accurate control to wheel braking pressure, prevents quick-fried tire of stopping, shorten braking distance.Electric hydraulic pressure servo valve master
It to be grouped as by torque-motor electric part and spray block valve, slide valve hydraulic components department.In general, Electric hydraulic pressure servo valve is using double sprays
Mouth flapper valve and double slide valve structure.In addition, existing Electric hydraulic pressure servo valve is additionally provided with check valve, safety valve and oil return electricity
The safety devices such as Flux Valve and auxiliary device.Between fuel supply chamber and brake chamber, effect is when spool blocks for check valve setting
And can not pine in a flash, as long as driver's releasing of brake pedal, check valve open, oil liquid bypass slide valve, can unclamp or release
Brake.The effect of safety valve is to guarantee the pressure of Electric hydraulic pressure servo valve inner cavity hydraulic oil within security clearance limit.Oil return
The effect of solenoid valve is the oil return line for opening or closing oil back chamber as needed.
Electric hydraulic pressure servo valve is accurate attachment, however the prior art uses mechanical valve and mainly to be split type, this
Sample is unfavorable for assembly test and assembly, while the reliability of existing torque-motor is to be improved.
Summary of the invention
The present invention is improved for existing pressure servo valve remaining aspect, security reliability, assembling, provides a kind of brake
The safe and reliable Electric hydraulic pressure servo valve of vehicle.
In order to achieve the above objectives, it is characterized by comprising sliding lock valve, electromagnetism to return for the Electric hydraulic pressure servo valve that the present invention designs
Oil valve, two torque-motors and two slide valves, the both ends of the nozzle of torque-motor pass through respectively throttling aperture member outlet with
The both ends of the control chamber of one slide valve are connected to；The brake mouth of two slide valves is separately connected left and right brake chamber interface by independent oil path；
The oil inlet of sliding lock valve is connected to by oil circuit with the oil inlet of each slide valve, and the control chamber of sliding lock valve passes through oil circuit and each slide valve
The oil communication of oil return opening, two oil outlets and oil return orifice of sliding lock valve control chamber；An oil inlet and electricity for sliding lock valve
The oil inlet of magnetic oil return valve is connected to, and another oil inlet is connected to the control chamber of electromagnetism oil return valve；Electromagnetism oil return valve returns
Hydraulic fluid port and oil return orifice；Oil inlet interface passes through the oil inlet of oil circuit and each slide valve, the oil inlet and electricity of sliding lock valve
The oil inlet of magnetic oil return valve is connected to.
Preferably, the oil circuit of the slide valve oil return opening is divided into two, wherein the oil inlet of an oil circuit and sliding lock valve control chamber
Mouth connection, another oil circuit are connected to the oil inlet of oil return safety valve.
Preferably, it is single that one is equipped between Electric hydraulic pressure servo valve oil inlet oil circuit and left and right brake chamber interface oil circuit
To valve and form a bypass channel；The opening direction of the check valve is against brake system oil inlet direction；Check valve
Oil outlet pass through the oil communication of oil circuit and slide valve oil inlet；The oil inlet of check valve by oil circuit it is corresponding with it is left and right
Oil communication between brake chamber interface and wherein slide valve brake mouth.
Preferably, the torque-motor is equipped with twin coil.Remaining is increased in this way, improves reliability.
The beneficial effects of the present invention are: 1, pressure servo valve increases coil remaining, guarantee when a coil is problematic, separately
One coil still reliably working.2, mechanical valve is changed to hydraulic controlling type valve, more secure and reliable.3, valve it is split type be changed to it is whole
Body plug-in facilitates assembly test and assembly.4, security reliability, assembling etc. are improved, to realize that brake is safer
Reliably.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of Electric hydraulic pressure servo valve of the present invention,
Fig. 2 is electromagnetism oil return valve and sliding lock valve operation schematic diagram of the present invention.
In figure: torque-motor 1, nozzle 1.1, throttling aperture member 1.2, shell 2, slide valve 3, left brake chamber interface 4, right brake
Chamber interface 5, oil inlet interface 6, main oily filter 7, sliding lock valve 8, electromagnetism oil return valve 9, oil return safety valve 10, oil return interface 11, list
To valve 12.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in embodiment
It states.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present embodiment is a kind of Electric hydraulic pressure servo valve, it is to be obtained after the prior art is improved and integrated
It arrives.
Two torque-motors 1 are equipped with twin coil, increase remaining in this way, improve reliability, be fixed on shell respectively
The two sides of body 2.The both ends of nozzle 1.1 in the torque-motor pass through oil circuit respectively and throttle with torque-motor oily filter both ends are located at
The upper outlet of aperture member 1.2 is connected to.The lower outlet of the throttling aperture member 1.2 passes through the two of oil circuit and 3 control chamber of slide valve respectively
End connection.Left brake chamber interface 4 is connected to by oil circuit with the brake mouth of one of slide valve 3, and right brake chamber interface 5 passes through oil circuit
It is connected to the brake mouth of another slide valve 3.Two-way brake is respectively provided with a torque-motor, check valve and slide valve, shares a cunning
Locking-valve, electromagnetism oil return valve and oil return safety valve.
One main oily filter 7 of connection is exported in Electric hydraulic pressure servo valve oil inlet interface 6, the oil circuit of main 7 oil outlet of oily filter is divided into two
Branch, wherein an oil circuit is connected to the oil inlet of sliding lock valve 8 and electromagnetism oil return valve 9, the oil inlet of another oil circuit and slide valve 3
Connection.
The both ends of the control chamber of slide valve 3 are connected to with throttling aperture member 1.2, and the brake mouth of two slide valves 3 passes through independent oil
Road is separately connected left brake chamber interface 4, right brake chamber interface 5, oil inlet, the oil return of 3 oil return opening of slide valve and 8 control chamber of sliding lock valve
The connection of 10 oil inlet of safety valve.
The oil inlet of sliding lock valve 8 is connected to by oil circuit with the oil inlet of each slide valve 3, oil inlet interface 6, the control of sliding lock valve 8
Chamber processed passes through the oil communication of oil circuit and each 3 oil return opening of slide valve, two oil outlets and oil return interface 11 of 8 control chamber of sliding lock valve
Connection；One oil inlet of sliding lock valve 8 is connected to the oil inlet of electromagnetism oil return valve 9, another oil inlet and electromagnetism oil return valve 9
Control chamber connection.
The oil return opening of electromagnetism oil return valve 9 is connected to oil return interface 11, and oil inlet is connected to oil inlet interface 6, control chamber with
One oil inlet of sliding lock valve is connected to.
Oil inlet interface 6 is living by the oil inlet of oil circuit and each slide valve 3, an oil inlet of sliding lock valve 8 and electromagnetism oil return
The oil inlet of door 9 is connected to
Oil return interface 11 is connected to by oil circuit with the oil return opening of the oil return opening of 8 control chamber of sliding lock valve, electromagnetism oil return valve 9.
Between Electric hydraulic pressure servo valve oil inlet interface 6 and left 4 oil circuit of brake chamber interface, in Electric hydraulic pressure servo valve oil inlet
It is equipped with a check valve 12 between interface 6 and right 5 oil circuit of brake chamber interface and forms a bypass channel；The check valve
12 opening direction is against brake system oil inlet direction；The oil outlet of check valve 12 passes through the oil of oil circuit and 3 oil inlet of slide valve
Road connection；The oil inlet of check valve 12 by corresponding with a left and right brake chamber interface and wherein slide valve 3 brake mouth of oil circuit it
Between oil communication.
When input current signal is zero, torque-motor baffle is in middle position, and two nozzle cavity pressures are equal, and the chamber that brakes is through cunning
Aperture and valve core of the spool valve right end oil communication on valve core, keep the pressure of left and right two chamber of valve core of the spool valve also equal, valve core of the spool valve
It is in right end under spring force.The fuel supply chamber and brake chamber of slide valve pair communicate, and brake cavity pressure is equal to charge oil pressure.When
When inputting a current signal to valve, baffle is deflected to the right, acts on the nozzle chambers pressure rise of valve core of the spool valve right end, left end
Nozzle chambers pressure reduction, valve core of the spool valve are moved to the left.The oil inlet side of valve core of the spool valve starts to be gradually reduced, and hydraulic power source passes through oil inlet side
A certain load pressure is exported to load, this pressure feedback to valve core of the spool valve is fed back on end face, until acting on valve core of the spool valve
Each power, the i.e. driving force of nozzle flapper grade, outer perturbed force caused by the feedback force and return pressure of load pressure reach equilibrium-like
When state, valve core of the spool valve is by stop motion.When input signal increases, the output loading pressure of valve reduces therewith, and output loading pressure
Power is inversely proportional with input current signal.
As shown in Fig. 2, the working principle of electromagnetism oil return valve:
1, it when the electromagnet is powered off, is generated without electromagnetic force, steel ball is pushed to right valve under the pressure effect of oil inlet
Seat, hydraulic oil reach sliding lock valve piston left end by left valve base, since piston area is greater than sliding lock valve core end area, because
This, under input pressure effect, left side power is greater than the right power and closes the oil return of servo valve so that sliding lock valve core moves right
Road.Valve, which achievees the purpose that resolve to be electrically turn off, in this way closes oil return.Brake pressure is set to be consistently equal to charge oil pressure.
2, when electromagnet obtains it is electric when, generate electromagnetic force, steel ball closes rapidly left valve base under the action of mandril, make to slide
Locking-valve piston left end oil circuit is linked up through right valve base and oil return, pressure zero, sliding lock valve core under the effect of right end input pressure,
Push sliding lock valve core to left end, open the oil return crossing of servo valve, such electromagnetism oil return valve just completes energization and opens
The purpose of oil return.
Claims (4)
1. a kind of Electric hydraulic pressure servo valve, it is characterised in that: including sliding lock valve, electromagnetism oil return valve, two torque-motors and two
A slide valve, the both ends of the nozzle of torque-motor pass through the outlet of throttling aperture member respectively and connect with the both ends of the control chamber of a slide valve
It is logical；The brake mouth of two slide valves is separately connected left and right brake chamber interface by independent oil path；The oil inlet of sliding lock valve passes through oil circuit
It is connected to the oil inlet of each slide valve, the control chamber of sliding lock valve passes through the oil communication of oil circuit and each slide valve oil return opening, sliding lock
Two oil outlets and oil return orifice of valve control chamber；One oil inlet of sliding lock valve and the oil inlet of electromagnetism oil return valve connect
Logical, another oil inlet is connected to the control chamber of electromagnetism oil return valve；The oil return opening and oil return orifice of electromagnetism oil return valve；Into
Oily interface is connected by the oil inlet of the oil inlet of oil circuit and each slide valve, an oil inlet of sliding lock valve and electromagnetism oil return valve
It is logical.
2. Electric hydraulic pressure servo valve according to claim 1, it is characterised in that: the oil circuit of the slide valve oil return opening is divided into two
Branch, wherein an oil circuit is connected to the oil inlet of sliding lock valve control chamber, the oil inlet of another oil circuit and oil return safety valve connects
It is logical.
3. Electric hydraulic pressure servo valve according to claim 1, it is characterised in that: in Electric hydraulic pressure servo valve oil inlet oil circuit
It is equipped with a check valve between left and right brake chamber interface oil circuit and forms a bypass channel；The check valve is opened
Direction is opened against brake system oil inlet direction；The oil outlet of check valve passes through the oil communication of oil circuit and slide valve oil inlet；It is single
To the oil inlet of valve by oil circuit it is corresponding with it is left and right brake chamber interface and wherein a slide valve brake mouth between oil circuit company
It is logical.
4. Electric hydraulic pressure servo valve according to claim 1, it is characterised in that: the torque-motor is equipped with twin coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811311645.1A CN109630489B (en) | 2018-11-06 | 2018-11-06 | Electrohydraulic pressure servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811311645.1A CN109630489B (en) | 2018-11-06 | 2018-11-06 | Electrohydraulic pressure servo valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630489A true CN109630489A (en) | 2019-04-16 |
| CN109630489B CN109630489B (en) | 2024-02-27 |
Family
ID=66067271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811311645.1A Active CN109630489B (en) | 2018-11-06 | 2018-11-06 | Electrohydraulic pressure servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630489B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2023029291A1 (en) * | 2021-08-31 | 2023-03-09 | 上海衡拓液压控制技术有限公司 | Brake control servo valve having rapid pressure relief protection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3357444A (en) * | 1965-01-21 | 1967-12-12 | Weston Instruments Inc | Fluid flow control |
| US3782404A (en) * | 1972-06-14 | 1974-01-01 | Commercial Shearing | Adjustable, metered, directional flow control arrangements |
| CN103144766A (en) * | 2013-03-11 | 2013-06-12 | 西安航空制动科技有限公司 | Electric hydraulic pressure servo valve |
| DE102012209218A1 (en) * | 2012-05-31 | 2013-12-05 | Robert Bosch Gmbh | Hydraulic block for a hydraulic unit of a slip-controlled, hydraulic vehicle brake system |
| CN212106416U (en) * | 2018-11-06 | 2020-12-08 | 襄阳航宇机电液压应用技术有限公司 | Electro-hydraulic pressure servo valve |
-
2018
- 2018-11-06 CN CN201811311645.1A patent/CN109630489B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3357444A (en) * | 1965-01-21 | 1967-12-12 | Weston Instruments Inc | Fluid flow control |
| US3782404A (en) * | 1972-06-14 | 1974-01-01 | Commercial Shearing | Adjustable, metered, directional flow control arrangements |
| DE102012209218A1 (en) * | 2012-05-31 | 2013-12-05 | Robert Bosch Gmbh | Hydraulic block for a hydraulic unit of a slip-controlled, hydraulic vehicle brake system |
| CN103144766A (en) * | 2013-03-11 | 2013-06-12 | 西安航空制动科技有限公司 | Electric hydraulic pressure servo valve |
| CN212106416U (en) * | 2018-11-06 | 2020-12-08 | 襄阳航宇机电液压应用技术有限公司 | Electro-hydraulic pressure servo valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2023029291A1 (en) * | 2021-08-31 | 2023-03-09 | 上海衡拓液压控制技术有限公司 | Brake control servo valve having rapid pressure relief protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109630489B (en) | 2024-02-27 |
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