CN111894922A - Deflection plate structure of electro-hydraulic servo valve - Google Patents
Deflection plate structure of electro-hydraulic servo valve Download PDFInfo
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- CN111894922A CN111894922A CN201911323574.1A CN201911323574A CN111894922A CN 111894922 A CN111894922 A CN 111894922A CN 201911323574 A CN201911323574 A CN 201911323574A CN 111894922 A CN111894922 A CN 111894922A
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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
- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Servomotors (AREA)
Abstract
The invention discloses a deflection plate structure of an electro-hydraulic servo valve, which belongs to the field of electro-hydraulic servo valves and is used for solving the technical problems that when a deflection plate is provided with a flow guide window with a V-shaped groove structure in the prior art, a fillet not greater than R0.005 needs to be processed at an edge (sharp edge) of an acute angle structure formed between the flow guide window and the surface of the deflection plate, the existing electro-machining and linear cutting processing technologies are difficult to guarantee, the sharp edge is irregular after processing, and the slag dropping phenomenon is easy to occur; a deflection plate formed on the feedback rod; the deflection plate is provided with a flow guide window; the flow guide window comprises a flow collecting section and a jet flow section connected to the lower end of the flow collecting section; the jet flow section and the surface of the deflection plate form an included angle of 90 degrees, and the edge formed at the joint of the jet flow section and the surface of the deflection plate is processed with a fillet with the thickness not larger than R0.005mm.
Description
Technical Field
The invention relates to the technical field of electro-hydraulic servo valves, in particular to a deflection plate structure of an electro-hydraulic servo valve.
Background
The jet flow deflection plate type electro-hydraulic servo valve is one of electro-hydraulic servo valves and has the characteristics of strong anti-pollution capacity, stable working performance and high reliability;
the working principle diagram of the jet flow deflector type electro-hydraulic servo valve is shown in the attached figure 1, and the jet flow deflector type electro-hydraulic servo valve mainly comprises a torque motor, a deflector jet flow amplifier, an oil filter, a valve core, a valve sleeve, a shell and other parts;
the deflection plate jet amplifier comprises a jet disc and a deflection plate, wherein the jet disc is provided with a jet port and two symmetrical receiving ports, the deflection plate is provided with a V-shaped flow guide window, a wide port of the V-shaped structure corresponds to the jet port of the jet disc, a narrow port corresponds to the two receiving ports of the jet disc, the torque motor mainly comprises magnetic steel, an armature component, an upper magnetizer, a lower magnetizer and a coil component, the armature component comprises an armature, a spring tube and a feedback rod component, and the spring tube and the feedback rod component are fixedly connected together;
under the condition of not considering zero-bias current, when a product works and no current signal is input into the torque motor, the deflector is in the middle position of the jet flow disc, oil liquid sprayed out of the jet flow port is equally received by the two receiving ports, equal pressure is formed in the channels of the two receiving ports, the valve core is in the middle position, and the electro-hydraulic servo valve has no flow output. When the torque motor receives a current signal, magnetic flux is generated on the armature due to the magnetic effect of the current of the coil assembly, and under the interaction of control magnetic flux, the deflection torque enables the armature assembly to deflect around a rotating center, so that the V-shaped groove of the feedback rod deviates from the middle position, the oil flows received by the two receiving ports are different, the oil pressure in the channels of the two receiving ports is changed, the pressure in the channel of one receiving port is increased, the pressure in the channel of the other receiving port is reduced, and a control pressure difference is formed to push the valve core to move; the displacement of the valve core drives the feedback rod to generate bending deformation, and the bending deformation is fed back to the armature of the torque motor in a torque mode and is balanced with the electromagnetic torque generated by the armature. Because the torque of the torque motor is basically in direct proportion to the control current, and the feedback torque is in direct proportion to the displacement of the valve core, when each torque is in a balanced state, the input control current is in direct proportion to the displacement of the valve core, namely, the output flow is in direct proportion to the input control current under the condition that the pressure drop of the valve is constant;
therefore, the jet flow characteristic of the flow guide window of the V-shaped structure of the deflection plate is a key factor influencing the oil hydraulic pressure of the two receiving ports and influencing the zero work stability of the electro-hydraulic servo valve;
in the prior art, as shown in fig. 2, a flow guide window with a V-shaped groove structure formed on a deflection plate extends along the length direction of the deflection plate, as shown in fig. 3, due to the particularity of the V-shaped structure, one end of a bevel edge of the flow guide window and the surface of the deflection plate form an obtuse-angle-structured edge, and the other end of the bevel edge and the surface of the deflection plate form an acute-angle-structured edge (sharp edge), in order to ensure that oil of jet flow of a jet flow outlet (sharp edge) of the flow guide window is concentrated and not dispersed, a round angle not larger than R0.005 needs to be processed at the sharp edge, the existing electro-machining and linear cutting processing technologies are difficult to ensure, the sharp edge is irregular after processing, the slag dropping phenomenon is easy to.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the deflection plate structure of the electro-hydraulic servo valve, which has the advantages of simple structure, good manufacturability, easy processing, stable jet flow and contribution to improving the recovery pressure difference of two receiving ports of a jet flow disc so as to improve the pollution resistance of the electro-hydraulic servo valve.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a deflection plate structure of an electro-hydraulic servo valve, which comprises:
a feedback lever;
a deflection plate fixedly connected to the feedback rod;
the deflection plate is provided with a flow guide window;
the flow guide window comprises a flow collecting section and a jet flow section connected to the lower end of the flow collecting section;
the jet flow section and the surface of the deflection plate form an included angle of 90 degrees, and an edge formed at the joint of the jet flow section and the surface of the deflection plate is processed with a fillet not larger than R0.005mm.
Furthermore, the flow guide window extends along the length direction of the deflection plate and is cut into a Y-shaped groove structure by a cutting plane perpendicular to the width direction of the flow guide window;
the V-shaped part of the Y-shaped groove structure is the flow collecting section, and the vertical straight part of the Y-shaped groove structure is the jet flow section;
the jet flow section is provided with a jet flow channel for guiding oil to be parallel to the jet flow section.
Furthermore, the length h of the jet flow channel is 0.005-0.01 mm.
Further, the jet flow section and the jet flow channel have the same length.
Further, the length of the jet flow section is larger than the length of the jet flow channel.
Furthermore, an arc transition section is formed at the joint of the jet flow section and the flow collecting section.
Further, the deflection plate and the feedback rod are of an integral structure.
In the technical scheme, the deflection plate structure of the electro-hydraulic servo valve provided by the invention has the beneficial effects that:
according to the deflection plate designed by the invention, the deflection plate is provided with the flow guide window, the flow guide window comprises the flow collecting section and the jet flow section, the included angle of 90 degrees is formed between the jet flow section and the surface of the deflection plate, and the connecting part of the jet flow section and the surface of the deflection plate is processed with the fillet not larger than R0.005mm, so that compared with the prior art, the area of the corner between the jet flow section and the deflection plate is increased, the strength of the corner is improved, the fillet not larger than R0.005mm is conveniently processed by a wire cutting process, the processed edge rule is ensured, the slag falling phenomenon is avoided, the jet flow is stable, and the jet flow of the jet flow;
secondly, the flow guide window is of a Y-shaped groove structure, the V-shaped portion of the Y-shaped groove structure is a flow collecting section, the vertical linear portion of the Y-shaped groove structure is a jet flow section, a jet flow channel for guiding oil to be parallel to the jet flow section is formed in the jet flow section, the length h of the jet flow channel is set to be 0.005-0.01 mm, the processing manufacturability of the flow guide groove is improved, the stability of the electro-hydraulic servo valve in working near a zero position is improved, the improvement of the recovery pressure difference of two receiving ports of the jet flow disc is facilitated, and therefore the anti-pollution capacity of a product is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of a prior art jet deflector type electro-hydraulic servo valve;
FIG. 2 is a front view of a prior art feedback rod;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a front view of the feedback rod of the present disclosure;
FIG. 5 is a cross-sectional view of a feedback rod A-A of the present disclosure;
fig. 6 is a line graph showing differential pressure between two receiving ports corresponding to the flow guide window of the prior art and the present invention.
Description of reference numerals:
1. a feedback lever; 2. a deflection plate; 3. a flow guide window; 301. a current collecting section; 302. a jet section; 303. a fluidic channel;
(jet flow deflector servo valve working principle diagram; 10, magnetic steel; 20, coil; 30, armature; 40, spring tube; 50, jet flow disc; 60, receiving port; 70, jet flow port; 80, oil filter; 90, valve sleeve; 100, valve core; 110, shell; A1 control window; A2 control window; R oil return port; P oil inlet.)
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings.
See fig. 1, 4, 5;
the invention discloses a deflection plate structure of an electro-hydraulic servo valve, which comprises:
a feedback rod 1;
a deflection plate 2 fixedly connected to the feedback rod 1;
the deflection plate 2 is provided with a flow guide window 3;
the flow guide window 3 comprises a flow collecting section 301 and a jet flow section 302 connected to the lower end of the flow collecting section 301, the jet flow section 302 and the surface of the deflection plate 2 form an included angle of 90 degrees, and the edge formed at the connection position of the jet flow section 302 and the surface of the deflection plate 2 is processed with a fillet not larger than R0.005mm.
Specifically, as shown in fig. 1, in the structure, a sphere is formed at one end of a feedback rod 1, the sphere is inserted into a valve core 100, the other end of the feedback rod 1 is fixedly connected with a spring tube 40 in a press-fitting or welding manner, and the spring tube 40 is driven by an armature 30 and rotates left and right by taking an axis of the feedback rod 1 in the length direction as a rotating shaft;
referring to fig. 4, the feedback rod 1 is fixedly connected with a deflector plate 2 at the end of the spring tube 40, and preferably, the deflector plate 2 and the feedback rod 1 are of an integral structure. The deflection plate 2 and the feedback rod 1 are integrated, so that the deflection plate 2 and the feedback rod 1 can be ensured to act synchronously, and the sensitivity of the deflection plate 2 is improved; the deflection plate 2 is of a cuboid structure, the length direction of the deflection plate is the same as that of the feedback rod 1, and two edges of the deflection plate 2 in the width direction are arc edges; and a flow guide window 3 is arranged on the axis of the deflection plate 2 overlapped with the feedback rod 1 in the length direction.
Referring to fig. 5, the flow guide window 3 includes a collecting section 301 and a jet section 302, the jet section 302 is connected to the lower end of the collecting section 301, oil enters through the collecting section 301 and is ejected from the jet section 302, the jet section 302 forms an included angle of 90 degrees with the surface of the deflector 2, and a fillet not greater than r0.005mm is machined at the connection position of the jet section 302 and the surface of the deflector 2. By arranging the jet flow section 302 and the surface of the deflection plate 2 to form a 90-degree included angle, compared with the prior art, the area of the corner of the jet flow section 302 and the deflection plate 2 is increased, the strength of the corner is improved, the processing of a fillet which is not more than R0.005mm by a wire cutting process is facilitated, the processed edge is regular, the slag falling phenomenon is avoided, the manufacturability is good, the jet flow section 302 is ensured to be stable and not dispersed, the stability of the work near the zero position of the electro-hydraulic servo valve is further improved, the improvement of the recovery pressure difference of two receiving ports of a jet flow disc is facilitated, and the pollution resistance of a product is further improved;
referring to fig. 5, in the preferred embodiment, the diversion window 3 extends along the length direction of the deflector 2 and is cut into a Y-shaped groove structure by a cutting plane perpendicular to the width direction of the diversion window 3;
the V-shaped part of the Y-shaped groove structure is a flow collecting section 301, and the vertical straight part of the Y-shaped groove structure is a jet flow section 302;
the jet section 302 is formed with jet channels 303 that direct oil parallel to the jet section 302.
Specifically, as shown in fig. 5, the flow guide window 3 is a Y-shaped groove structure, a V-shaped portion of the Y-shaped groove structure is a flow collecting section 301, a vertical linear portion of the Y-shaped groove structure is a jet flow section 302, oil flows in through a wide opening of the V-shaped portion of the flow collecting section 301, flows through a narrow portion of the V-shaped portion, enters a jet flow channel 303 formed by the jet flow section 302, and is guided by the jet flow channel 303 to be intensively ejected out of the flow guide window 3 in parallel to the jet flow section 302, the preferred length h of the jet flow channel 303 is 0.005-0.01 mm, and the preferred lengths of the jet flow section 302 and the jet flow channel 303 are equal;
through forming the jet flow channel 303 with the diameter of 0.005-0.01 mm in the jet flow section 302 and making the lengths of the jet flow section 302 and the jet flow channel 303 equal, compared with the prior art, as shown in fig. 6, the horizontal axis is the length parameter of the jet flow channel 303, the vertical axis is the pressure difference of two receiving ports, the pressure difference value of the vertical axis corresponding to the horizontal axis 0 is 0.376 (the pressure difference value of two receiving ports corresponding to a V-shaped groove in the prior art), when the horizontal axis changes from 0 to 0.01, the pressure difference value of two receiving ports corresponding to the invention, through the jet flow characteristic simulation analysis comparison and test verification, the length of the jet flow channel 303 of the flow guide window 3 of the invention is in the range of 0.005-0.01, which is beneficial to improving the processing manufacturability of the flow guide groove, when the electrohydraulic servo valve works at zero position, the pressure difference value of two receiving ports is close to the pressure difference value of the flow guide window in the prior art, the deviation is in the allowable range,
in another preferred embodiment, the length of the fluidic segment 302 is greater than the length of the fluidic channel 303. Preferably, the junction of the jet section 302 and the header section 301 is formed with a circular arc transition section.
Specifically, in this embodiment, the length of the jet flow section 302 is set to be greater than the length of the jet flow channel 303, an arc transition section is formed at the connection between the jet flow section 302 and the flow collecting section 301, the distance from the end of the arc transition section located on the side of the jet flow section 302 to the surface of the deflection plate 2 is equal to that of the jet flow channel 303, and the arc transition section is formed at the connection between the jet flow section 302 and the flow collecting section 301, so that it is beneficial to ensuring that the oil can smoothly flow into the jet flow channel 303 of the jet flow section 302 along the side wall of the flow collecting section 301, and further ensuring the jet flow stability of the jet flow channel 303, thereby further ensuring the stability of the work near the zero position of the electro.
In the technical scheme, the invention provides a deflection plate structure of an electro-hydraulic servo valve, which has a working principle;
as shown in fig. 1;
under the condition of not considering zero bias current, when a torque motor has no current signal input, the deflector 3 is at the middle position of the jet disc, oil sprayed out of the jet port 70 is equally received by the two receiving ports 60 and equal pressure is formed in the channels of the two receiving ports 60, the valve core is in a middle position, the electro-hydraulic servo valve has no flow output, when the torque motor receives the current signal, the armature 30 generates moment, the armature 30 rotates around the center of the spring tube to drive the deflector 2 to move, and further the pressure in the channels of the two receiving ports 60 is changed, so that the pressure in the channel of one receiving port 60 is increased, the pressure in the channel of the other receiving port 60 is reduced, and a control pressure difference is formed to push the valve core 100 to move;
has the advantages that:
according to the deflection plate designed by the invention, the deflection plate is provided with the flow guide window, the flow guide window comprises the flow collecting section and the jet flow section, the included angle of 90 degrees is formed between the jet flow section and the surface of the deflection plate, and the connecting part of the jet flow section and the surface of the deflection plate is processed with the fillet not larger than R0.005mm, so that compared with the prior art, the area of the corner between the jet flow section and the deflection plate is increased, the strength of the corner is improved, the fillet not larger than R0.005mm is conveniently processed by a wire cutting process, the processed edge rule is ensured, the slag falling phenomenon is avoided, the jet flow is stable, and the jet flow of the jet flow;
secondly, the flow guide window is of a Y-shaped groove structure, the V-shaped portion of the Y-shaped groove structure is a flow collecting section, the vertical linear portion of the Y-shaped groove structure is a jet flow section, a jet flow channel for guiding oil to be parallel to the jet flow section is formed in the jet flow section, the length h of the jet flow channel is set to be 0.005-0.01 mm, the processing manufacturability of the flow guide groove is improved, the stability of the electro-hydraulic servo valve in working near a zero position is improved, the improvement of the recovery pressure difference of two receiving ports of the jet flow disc is facilitated, and therefore the anti-pollution capacity of a product is improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. An electro-hydraulic servo valve deflector plate structure comprising;
a feedback lever (1);
a deflection plate (2) fixedly connected to the feedback rod (1);
the deflection plate (2) is provided with a flow guide window (3) and is characterized in that;
the flow guide window (3) comprises a flow collecting section (301) and a jet flow section (302) connected to the lower end of the flow collecting section (301);
the jet flow section (302) and the surface of the deflection plate (2) form an included angle of 90 degrees, and the edge formed at the joint of the jet flow section (302) and the surface of the deflection plate (2) is processed with a fillet not larger than R0.005mm.
2. The electro-hydraulic servo valve deflector plate structure of claim 1, wherein;
the flow guide window (3) extends along the length direction of the deflection plate (2) and is cut into a Y-shaped groove structure by a cutting plane vertical to the width direction of the flow guide window (3);
the V-shaped part of the Y-shaped groove structure is the flow collecting section (301), and the vertical straight part of the Y-shaped groove structure is the jet flow section (302);
the jet section (302) is formed with a jet passage (303) that directs oil parallel to the jet section (302).
3. The electro-hydraulic servo valve deflector plate structure of claim 2, wherein;
the length h of the jet flow channel (303) is 0.005-0.01 mm.
4. The electro-hydraulic servo valve deflector plate structure of claim 3, wherein;
the jet segment (302) and the jet channel (303) are of equal length.
5. The electro-hydraulic servo valve deflector plate structure of claim 3, wherein;
the length of the jet segment (302) is greater than the length of the jet channel (303).
6. The electro-hydraulic servo valve deflector plate structure of claim 5, wherein;
and an arc transition section is formed at the joint of the jet flow section (302) and the flow collecting section (301).
7. The electro-hydraulic servo valve deflector plate structure of claim 1, wherein;
the deflection plate (2) and the feedback rod (1) are of an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911323574.1A CN111894922B (en) | 2019-12-20 | 2019-12-20 | Electro-hydraulic servo valve deflection plate structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911323574.1A CN111894922B (en) | 2019-12-20 | 2019-12-20 | Electro-hydraulic servo valve deflection plate structure |
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| CN111894922A true CN111894922A (en) | 2020-11-06 |
| CN111894922B CN111894922B (en) | 2023-06-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1239456A (en) * | 1967-10-27 | 1971-07-14 | ||
| GB9315982D0 (en) * | 1992-12-18 | 1993-09-15 | Hr Textron Inc | Fluidic deflector jet servovalve |
| CN107725519A (en) * | 2017-11-01 | 2018-02-23 | 湖北航达科技有限公司 | The board-like electrohydraulic servo valve of small size high frequency high linearity jet deflection and application method |
| CN207569306U (en) * | 2017-11-10 | 2018-07-03 | 中航空工业南京伺服控制系统有限公司 | A kind of torque arm jet deflection plate torque-motor |
| CN109595209A (en) * | 2018-11-29 | 2019-04-09 | 北京实验工厂有限责任公司 | A kind of local derviation jet servo valve Three Degree Of Freedom debugging apparatus |
-
2019
- 2019-12-20 CN CN201911323574.1A patent/CN111894922B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1239456A (en) * | 1967-10-27 | 1971-07-14 | ||
| GB9315982D0 (en) * | 1992-12-18 | 1993-09-15 | Hr Textron Inc | Fluidic deflector jet servovalve |
| CN107725519A (en) * | 2017-11-01 | 2018-02-23 | 湖北航达科技有限公司 | The board-like electrohydraulic servo valve of small size high frequency high linearity jet deflection and application method |
| CN207569306U (en) * | 2017-11-10 | 2018-07-03 | 中航空工业南京伺服控制系统有限公司 | A kind of torque arm jet deflection plate torque-motor |
| CN109595209A (en) * | 2018-11-29 | 2019-04-09 | 北京实验工厂有限责任公司 | A kind of local derviation jet servo valve Three Degree Of Freedom debugging apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 刘文可，陈奎生，湛从昌等: "偏转板伺服阀前置级结构参数优化研究", 《武汉科技大学学报》 * |
| 訚耀保，张鹏，岑斌: "偏转板射流伺服阀前置级流场分析", 《中国工程机械学报》 * |
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| CN111894922B (en) | 2023-06-20 |
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