CN108869418A - A kind of undercarriage turning system bidirectional safe integrated control valve - Google Patents
A kind of undercarriage turning system bidirectional safe integrated control valve Download PDFInfo
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- CN108869418A CN108869418A CN201810762273.8A CN201810762273A CN108869418A CN 108869418 A CN108869418 A CN 108869418A CN 201810762273 A CN201810762273 A CN 201810762273A CN 108869418 A CN108869418 A CN 108869418A
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- ozzle
- valve body
- chamber
- built
- lock
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Classifications
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
- B64C25/36—Arrangements or adaptations of wheels, tyres or axles in general
-
- 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)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a kind of undercarriage turning system bidirectional safe integrated control valve comprising is provided with the valve body of the first and second ozzle（13）, valve body centre is equipped with the first and second through-hole interconnection independent of each other（L2,L1）, the left control ozzle of the first ozzle connection throttle（B）With the left driving chamber of turning pressurized strut（Ⅰ）, the right control ozzle of the second ozzle connection throttle（G）With the right driving chamber of turning pressurized strut（Ⅱ）, the first ozzle connect the first cavity to be formed with valve body left end（a）Interior the first built-in lock being provided with for controlling the turning right driving chamber oil circuit safety of pressurized strut（Ⅲ）, the second ozzle connect the second cavity to be formed with valve body right end（b）Interior the second built-in lock being provided with for controlling the turning left driving chamber oil circuit safety of pressurized strut（Ⅳ）, the first cavity is through the first through-hole interconnection the second built-in lock of connection, and the second cavity is through the second through-hole interconnection the first built-in lock of connection.
Description
Technical field
The present invention relates to undercarriage turning system, especially a kind of undercarriage turning system bidirectional safe integrated control
Valve.
Background technique
The main driving execution unit of undercarriage turning system is turning pressurized strut, and the functional component of control oil circuit conversion is
Throttle, in order to guarantee to encounter obstacle in ground taxiing procedures or the load that causes excessive shock due to other when wheel
Lotus force wheel rotation, at this point, throttle have little time link up turning two hydraulic-driven functional chambers of pressurized strut between it is excessive
Pressure difference, or when carrying out turn control, pressure is risen excessively high.In order to guarantee throttle and turning two hydraulic drives of pressurized strut
The safety of oil circuit between dynamic functional chamber, need in undercarriage turning system throttle and turning two hydraulic-drivens of pressurized strut
Safety control function component is set on oil circuit between functional chamber, plays safety effect, links up turning two liquid of pressurized strut in time
Driving function chamber is pressed, undercarriage turning system manipulation oil circuit, attachment and turning mechanism damage are prevented.
Summary of the invention
Object of the present invention is in view of the shortcomings of the prior art, provide a kind of undercarriage turning system bidirectional safe integrated control
Valve, with improve throttle and turn pressurized strut left and right driving chamber between oil circuit safety and turning system work can
By the safety of property and mechanism.
In order to achieve the above object, a kind of undercarriage turning system bidirectional safe integrated control valve provided by the invention, packet
It includes the hollow valve body in both ends, is equipped with and is axially opposite and the first and second through-hole interconnection independent of each other among the valve body,
The first ozzle is arranged in one end of the valve body, and the second ozzle is arranged in the other end, and the first ozzle is connected to the left control of throttle
The left driving chamber of ozzle and turning pressurized strut, the second ozzle are connected to the right control ozzle of throttle and the right drive of turning pressurized strut
Dynamic chamber, the first ozzle, which is connect in the first cavity to be formed with valve body left end, to be provided with for controlling the turning right driving of pressurized strut
First built-in lock of chamber oil circuit safety, the second ozzle connect in the second cavity to be formed with valve body right end and are provided with for controlling
Second built-in lock of the system turning left driving chamber oil circuit safety of pressurized strut, the first cavity is through built in the first through-hole interconnection connection second
Lock, the second cavity connect the first built-in lock through the second through-hole interconnection, to control the peace of turning pressurized strut left and right driving chamber oil circuit
Entirely；
First built-in lock include the first spring set gradually from the first ozzle to valve body one end, the first spring base,
First cavity is separated into the first left chamber and the first right chamber by the first steel ball, the first spring base, through the first bullet between the first left and right chamber
The oblique through-hole connection of the first of spring abutment bottom setting, under the action of the first spring, the left end of the first steel ball and valve body is connect
Touching, and the first sealing state is formed in the matching part of the first steel ball and valve body, it is let out with closing the intracorporal safety of the first chamber
Pressure oil road；When the intracorporal oil circuit pressure of the second chamber be higher than the first built-in lock the first steel ball cracking pressure when, the first steel ball with
Valve body separates and generates gap and circulate for hydraulic oil, that is, opens the intracorporal safety relief oil circuit of the first chamber, turns to link up
Oil circuit between curved pressurized strut left and right driving chamber, plays safety effect；
Second built-in lock includes the second spring set gradually from the second ozzle to the valve body other end, second spring
Second cavity is separated into the second left chamber and the second right chamber by seat, the second steel ball, second spring seat, through the between the second left and right chamber
The oblique through-hole connection of the second of two spring base bottoms setting, under the action of second spring, the second steel ball is contacted with valve body,
And the second sealing state is formed in the matching part of the second steel ball and valve body, to close the intracorporal safety relief oil of the second chamber
Road；When the intracorporal oil circuit pressure of the first chamber is higher than the cracking pressure of the second steel ball of the second built-in lock, the second steel ball and valve
Shell separates and generates gap and circulate for hydraulic oil, that is, opens the intracorporal safety relief oil circuit of the second chamber, makees to link up turning
Oil circuit between dynamic cylinder left and right driving chamber, plays safety effect.
The further improvement of above scheme is that first steel ball is equipped with the first sealing spherical surface, and the valve body is left
The matching part of end and the first steel ball is equipped with first and seals sharp side, under the action of the first spring, the first sealing spherical surface and first
Sharp side is sealed to contact to form first sealing state；When the first sealing spherical surface and first seal sharp side and separate, the two it
Between generate gap for hydraulic oil circulate.
The further improvement of above scheme is that second steel ball is equipped with the second sealing spherical surface, and the valve body is right
The matching part of end and the second steel ball is equipped with second and seals sharp side, under the action of second spring, the second sealing spherical surface and second
Sharp side is sealed to contact to form second sealing state；When the second sealing spherical surface and second seal sharp side and separate, the two it
Between generate gap for hydraulic oil circulate.
The further improvement of above scheme is that the first right chamber of first cavity connects institute through first through-hole interconnection
State the second built-in lock.Second left chamber of second cavity connects the first built-in lock through second through-hole interconnection.
The present invention will control in undercarriage turning system throttle and turning two hydraulic-driven functional chambers of pressurized strut it
Between oil circuit security function Integrated design in same component, the first ozzle and the second ozzle of two sides connect respectively through the invention
It connects on the oil circuit between throttle in undercarriage turning system and turning two hydraulic-driven functional chambers of pressurized strut, according to oil
The pressure on road, automatic synchronization control the opening and closing of the first and second built-in lock, it is final guarantee throttle and turning pressurized strut it
Between oil circuit safety.
When wheel encounters obstacle or the forced machine of the load that causes excessive shock due to other in ground taxiing procedures
Wheel rotation, at this point, throttle has little time to link up the excessive pressure difference of turning two hydraulic-driven functional chambers of pressurized strut, or into
When row turn control, it is excessively high that turning pressurized strut drives cavity pressure to rise, and is higher than in control valve and controls built-in lock on corresponding oil circuit
Cracking pressure when, built-in lock open, and then by control valve inside safety relief oil circuit link up turning pressurized strut two
Hydraulic-driven functional chamber, plays safety effect, to prevent undercarriage turning system manipulation oil circuit, attachment and turning mechanism damage
It is bad.
Compared with prior art, effect possessed by the present invention is：
The present invention two independent built-ins locks of Integrated design and is accordingly connected to oil circuit hole in a component, solves to turning
The individual secure of oil circuit pressure controls between throttle and turning two hydraulic-driven functional chambers of pressurized strut in system, improves
The safety of the reliability and mechanism of turning system work eliminates safety hazards caused by oil liquid pressure increases, simplifies
Undercarriage turning system safety control function part reduces the complexity of undercarriage turning system design, alleviates system weight,
Space has been saved, the deficiencies of absolute construction part occupied space increases, weight increases, connecting portion increases is avoided.
The present invention controls valve and has applied in the design of Mr. Yu's undercarriage turning system, applies also for space
Arrangement, Weight control are stringent, and reliability requirement is high, compact-sized, both-way operation hydraulic system, as aircraft door pressurized strut,
The hydraulic system of wing flap transmission mechanism and other similar function products.
Detailed description of the invention
Fig. 1 is a kind of undercarriage turning system bidirectional safe integrated control valve of the present invention（Locking states）Structure and principle
Schematic diagram, wherein（2）For（1）K-K cross-sectional view.
Fig. 2 is a kind of undercarriage turning system bidirectional safe integrated control valve of the present invention（Locking states）Left welding system pipe
Operation principle schematic diagram when mouth A pressure supply, wherein（2）For（1）K-K cross-sectional view.
Fig. 3 is a kind of undercarriage turning system bidirectional safe integrated control valve of the present invention（Locking states）Right welding system pipe
Operation principle schematic diagram when mouth H pressure supply, wherein（2）For（1）K-K cross-sectional view.
Fig. 4 is work when first built-in lock of a kind of undercarriage turning system bidirectional safe integrated control valve of the invention III is opened
Make schematic illustration.
Fig. 5 is work when second built-in lock of a kind of undercarriage turning system bidirectional safe integrated control valve of the invention IV is opened
Make schematic illustration.
In figure：
The first ozzle of 1-, the first spring of 2-, 3- first seal, 4- the first adjustment washer, the first stop collar of 5-, 6- second stop
Dynamic retainer ring, 7- second adjustment washer, 8- second seal, 9- second spring, the second ozzle of 10-, 11- second spring seat, 12- the
Two steel balls, 13- valve body, the first steel ball of 14-, the first spring base of 15-,（16）Turning pressurized strut,（17）Throttle；
The left welding system ozzle of A-, the left control ozzle of B-, the left safe ozzle of C-, the left driving ozzle of D-, the right driving ozzle of E-, the right peace of F-
Full ozzle, the right control ozzle of G-, the right welding system ozzle of H-；
The first cavity of a-, the second cavity of b-；
I-left driving chamber, II-right driving chamber, III-the first built-in lock, IV-the second built-in lock；
The second through-hole interconnection of L1-, the first through-hole interconnection of L2-, the oblique through-hole of L3- first, the oblique through-hole of L4- second；
M1- first seals spherical surface, and M2- second seals spherical surface, and N1- first seals sharp side, and N2- second seals sharp side.
Specific embodiment
As shown in Figure 1, the present invention is that will control throttle in undercarriage turning system（17）With turning pressurized strut（16）
The safe independent control function of two oil circuits that is connected to right driving chamber II of left driving chamber I be integrated in same valve body 13
A kind of undercarriage turning system bidirectional safe integrated control valve is made by the first ozzle 1 and the second ozzle 10 with turning respectively
Dynamic cylinder（16）Two oil circuit connections being connected to right driving chamber II of left driving chamber I.
13 both ends of valve body are equipped with the blind hole of certain depth, and axial independent safety is equipped in the middle part of valve body 13 and is let out
The first through-hole interconnection L2 and the second through-hole interconnection L1 are pressed, the first spring base 15 is equipped with the oblique through-hole L3 of safety relief first, the
Two spring bases 11 are equipped with the oblique through-hole L4 of safety relief second, and 13 both ends of valve body are managed with the first ozzle 1 and second respectively
Mouth 10 connects.It is cooperatively connected in the hollow cavity to be formed in the first ozzle 1 with 13 side of valve body and is provided with the first built-in lock
III, control turning pressurized strut（16）Right driving chamber II and its safety for connecting oil circuit；Second ozzle 10 and valve body 13 are another
Side is cooperatively connected in the hollow cavity to be formed provided with the second built-in lock IV, control turning pressurized strut（16）Left driving chamber I and its
Connect the safety of oil circuit.
The hollow cavity formed between first ozzle 1 and valve body 13 is sequentially installed with the first spring 2, the first spring base
15 and first steel ball 14, the first ozzle 1 and 13 matching part of valve body are sequentially installed with first seal 3, the first adjustment pad
Circle 4 and the first stop collar 5, the first ozzle 1 and turning pressurized strut（16）Left driving chamber I oil communication, in the first steel ball
14 contact to form the first built-in lock III with the sealing of the first sealing spherical surface M1 and first point side N1 is respectively equipped on valve body 13
Sealing device, for opening and closing turning pressurized strut（16）Driving chamber I to the left when right driving chamber II and its connection oil path high-pressure
The safety oil-way of pressure release, the first adjustment washer 4 can be used for adjusting the cracking pressure of the first built-in lock III；Second ozzle 10 and valve
The hollow cavity formed between shell 13 is sequentially installed with second spring 9, second spring seat 11 and the second steel ball 12, the second ozzle
10 and 13 matching part of valve body be sequentially installed with second seal 8, second adjustment washer 7 and the second stop collar 6, second
Ozzle 10 and turning pressurized strut（16）Right driving chamber II oil communication, set respectively on the second steel ball 12 and valve body 13
There is the sealing of the second sealing spherical surface M2 and second point side N2 to contact the sealing device to form the second built-in lock IV, for opening and closing
Turning pressurized strut（16）The safety oil-way of II pressure release of driving chamber to the right, second adjustment when left driving chamber I and its connection oil path high-pressure
Washer 7 can be used for adjusting the cracking pressure of the second built-in lock IV.
The operation principle of the present invention is that：
As shown in Figure 1, throttle（17）Left welding system ozzle A and right welding system ozzle H and turning system oil circuit connection.Section
Flow valve（17）Through throttle（17）Left control ozzle B, turning pressurized strut（16）Left driving ozzle D and turning pressurized strut
（16）Left driving chamber I be connected to, this oil circuit simultaneously control valve left safe ozzle C and the second built-in lock IV between locking
Chamber connection.Throttle（17）Through throttle（17）Right control ozzle G, turning pressurized strut（16）Right driving ozzle E with
Turning pressurized strut（16）Right driving chamber II be connected to, this oil circuit simultaneously and control valve right safe ozzle F and the first built-in lock
Locked cavity connection between III.
Referring to fig. 2, work as throttle（17）Left welding system ozzle A pressure supply when, it is hydraulic through throttle（17）, throttling live
Door（17）Left control ozzle B, turning pressurized strut（16）Left driving ozzle D enter turning pressurized strut（16）Left driving chamber I,
To realize turning pressurized strut（16）I pressure supply of left driving chamber turning, fuel feeding it is hydraulic and meanwhile by control valve left bursting tube
Mouth C enters control valve through the first oblique through-hole L3 on the first spring base 15, the first through-hole interconnection L2 on valve body 13
Left safe ozzle C and the second built-in lock IV between locked cavity, at this point, turning pressurized strut（16）Right driving chamber II oil liquid
Through pressurized strut of turning（16）Right driving ozzle E, throttle（17）Right control ozzle G, throttle（17）And throttling is lived
Door（17）Right welding system ozzle H enter system oil return, oil return is hydraulic while right safe ozzle F by control valve, through the
The second through-hole interconnection L1 on the second oblique through-hole L4, valve body 13 on two spring bases 11 enters the right safety of control valve
Locked cavity between ozzle F and the first built-in lock III.
Referring to Fig. 3, work as throttle（17）Right welding system ozzle H pressure supply when, it is hydraulic through throttle（17）, throttling live
Door（17）Right control ozzle G, turning pressurized strut（16）Right driving ozzle E enter turning pressurized strut（16）Right driving chamber
II, to realize turning pressurized strut（16）II pressure supply of right driving chamber turning, fuel feeding it is hydraulic and meanwhile by control valve right peace
Full ozzle F, enters control through the second oblique through-hole L4 on second spring seat 11, the second through-hole interconnection L1 on valve body 13
Locked cavity between the right safe ozzle F of valve and the first built-in lock III, at this point, turning pressurized strut（16）Left driving chamber I
Oil liquid is through pressurized strut of turning（16）Left driving ozzle D, throttle（17）Left control ozzle B, throttle（17）And section
Flow valve（17）Left welding system ozzle A enter system oil return, oil return is hydraulic while left safe ozzle C by control valve,
Enter a left side for control valve through the first oblique through-hole L3 on the first spring base 15, the first through-hole interconnection L2 on valve body 13
Locked cavity between safe ozzle C and the second built-in lock IV.
Referring to fig. 4, when turning pressurized strut（16）II oil circuit pressure of right driving chamber be higher than control valve control the side oil circuit
It is hydraulic to overcome the first spring 2 when the cracking pressure of the first built-in lock III of safety, so that the first steel ball 14 is left valve body 13,
It seals to be formed between spherical surface M1 and the first sealing point side N1 of valve body 13 the first of the first steel ball 14 and circulate for hydraulic oil
Gap, hydraulic oil in turn pass through control valve the first spring base 15 on the first oblique through-hole L3, left safe ozzle C, turn
Curved pressurized strut（16）Left driving ozzle D and turning pressurized strut（16）Left driving chamber I oil communication, realize insurance pressure release,
Play safety effect.After pressure release, under the action of the first spring 2, the first steel ball 14 resets, and seals the first of the first steel ball 14
Spherical surface M1 contacts to form sealing state with the first sealing point side N1 of valve body 13, realizes control turning pressurized strut（16）The right side
III locking of the first built-in lock of II oil circuit safety relief of driving chamber.
Referring to Fig. 5, when turning pressurized strut（16）I oil circuit pressure of left driving chamber be higher than control valve control the side oil circuit peace
It is hydraulic to overcome second spring 9 when the cracking pressure of the second full built-in lock IV, so that the second steel ball 12 is left valve body 13,
Formation is circulated for hydraulic oil between second sealing spherical surface M2 of the second steel ball 12 and the second sealing point side N2 of valve body 13
Gap, hydraulic oil pass through the second oblique through-hole L4, right safe ozzle F, turning on the second spring seat 11 of control valve in turn
Pressurized strut（16）Right driving ozzle E and turning pressurized strut（16）Right driving chamber II oil communication, realize insurance pressure release, rise
To safety effect.After pressure release, under the action of second spring 9, the second steel ball 12 resets, and makes the second ball sealer of the second steel ball 12
Face M2 contacts to form sealing state with the second sealing point side N2 of valve body 13, realizes control turning pressurized strut（16）Left drive
IV locking of the second built-in lock of dynamic I oil circuit safety relief of chamber.
Claims (5)
1. a kind of undercarriage turning system bidirectional safe integrated control valve, it is characterised in that including the hollow valve body in both ends
（13）, it is equipped among the valve body and is axially opposite and the first and second through-hole interconnection independent of each other（L2,L1）, the valve shell
The first ozzle (1) is arranged in one end of body, and the second ozzle is arranged in the other end（10）, the left control pipe of the first ozzle connection throttle
Mouth（B）With the left driving chamber of turning pressurized strut（Ⅰ）, the right control ozzle of the second ozzle connection throttle（G）With turning actuation
The right driving chamber of cylinder（Ⅱ）, the first ozzle connect the first cavity to be formed with valve body left end（a）It is interior to be provided with for controlling
First built-in lock of the right driving chamber oil circuit safety of pressurized strut of turning（Ⅲ）, the second ozzle connect to be formed with valve body right end
Two cavitys（b）Interior the second built-in lock being provided with for controlling the turning left driving chamber oil circuit safety of pressurized strut（Ⅳ）, the first cavity
The second built-in lock is connected through the first through-hole interconnection, the second cavity connects the first built-in lock through the second through-hole interconnection；
First built-in lock（Ⅲ）Including the first spring set gradually from the first ozzle to valve body one end（2）, first
Spring base（15）, the first steel ball（14）, the first cavity is separated into the first left chamber and the first right chamber by the first spring base, first left,
The first oblique through-hole being arranged between right chamber through the first spring base bottom（L3）Connection, under the action of the first spring, the first steel
Ball is contacted with the left end of valve body, and forms the first sealing state in the matching part of the first steel ball and valve body, to close
Close the intracorporal safety relief oil circuit of the first chamber；When the intracorporal oil circuit pressure of the second chamber is higher than opening for the first steel ball of the first built-in lock
When opening pressure, the first steel ball separates with valve body and generates gap and circulate for hydraulic oil, that is, opens the intracorporal safety of the first chamber
Pressure release oil circuit；
Second built-in lock（Ⅳ）Including the second spring set gradually from the second ozzle to the valve body other end（9）,
Two spring bases（11）, the second steel ball（12）, the second cavity is separated into the second left chamber and the second right chamber by second spring seat, and second
The second oblique through-hole being arranged between left and right chamber through second spring seat bottom（L4）Connection, under the action of second spring, second
Steel ball is contacted with valve body, and forms the second sealing state in the matching part of the second steel ball and valve body, to close the
The intracorporal safety relief oil circuit of two chambers；When the intracorporal oil circuit pressure of the first chamber is higher than the unlatching pressure of the second steel ball of the second built-in lock
When power, the second steel ball separates with valve body and generates gap and circulate for hydraulic oil, that is, opens the intracorporal safety relief of the second chamber
Oil circuit.
2. a kind of undercarriage turning system bidirectional safe integrated control valve according to claim 1, which is characterized in that institute
The first steel ball is stated equipped with the first sealing spherical surface（M1）, the valve body left end and the matching part of the first steel ball are equipped with first
Seal sharp side（N1）, under the action of the first spring, the first sealing spherical surface and first seals sharp side and contacts that form described first close
Envelope state；When the first sealing spherical surface and first seal sharp side and separate, gap is generated between the two and is circulated for hydraulic oil.
3. a kind of undercarriage turning system bidirectional safe integrated control valve according to claim 1 or 2, feature exist
In second steel ball is equipped with the second sealing spherical surface（M2）, the matching part of the valve body right end and the second steel ball sets
There is the second sealing point side（N2）, under the action of second spring, the second sealing spherical surface and second seal sharp side contact to be formed it is described
Second sealing state；When the second sealing spherical surface and second seal sharp side and separate, gap is generated between the two for hydraulic oil stream
It is logical.
4. a kind of undercarriage turning system bidirectional safe integrated control valve according to claim 1 or 2, feature exist
In the first right chamber of first cavity is through first through-hole interconnection（L2）Connect second built-in lock.
5. a kind of undercarriage turning system bidirectional safe integrated control valve according to claim 1 or 2, feature exist
In the second left chamber of second cavity is through second through-hole interconnection（L1）Connect the first built-in lock.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810762273.8A CN108869418B (en) | 2018-07-12 | 2018-07-12 | A kind of undercarriage turning system bidirectional safe integrated control valve |
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| CN201810762273.8A CN108869418B (en) | 2018-07-12 | 2018-07-12 | A kind of undercarriage turning system bidirectional safe integrated control valve |
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| CN108869418B CN108869418B (en) | 2019-11-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107554A (en) * | 2019-05-07 | 2019-08-09 | 中航飞机起落架有限责任公司 | A kind of switching valve and undercarriage turn control system |
| CN114030595A (en) * | 2021-11-18 | 2022-02-11 | 庆安集团有限公司 | Time-controllable differential motion actuating device |
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| US3975987A (en) * | 1973-07-03 | 1976-08-24 | Van Doorne's Bedrijfswagenfabriek Daf B.V. | Device to control a lifting cylinder |
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| CN202215806U (en) * | 2010-01-23 | 2012-05-09 | 浙江万达汽车方向机有限公司 | One-piece large differential pressure bidirectional safety valve used for automobile hydraulic power assisted steering device |
| CN104454723A (en) * | 2014-11-05 | 2015-03-25 | 中航飞机起落架有限责任公司 | Function control valve for support rod actuating cylinder of landing gear |
| CN105156389A (en) * | 2015-09-06 | 2015-12-16 | 哈尔滨工业大学 | Two-way safety valve |
| CN105937512A (en) * | 2016-06-30 | 2016-09-14 | 江苏金荣森制冷科技有限公司 | Working method of adjustable piston type bidirectional pressure relief valve |
| CN106314766A (en) * | 2016-11-25 | 2017-01-11 | 中航飞机起落架有限责任公司 | Landing gear actuator control lock |
| CN107461374A (en) * | 2017-09-08 | 2017-12-12 | 中航飞机起落架有限责任公司 | A kind of undercarriage control pressurized strut hydraulic control valve |
| CN207454852U (en) * | 2017-11-21 | 2018-06-05 | 程飞 | A kind of double-direction relief valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110107554A (en) * | 2019-05-07 | 2019-08-09 | 中航飞机起落架有限责任公司 | A kind of switching valve and undercarriage turn control system |
| CN110107554B (en) * | 2019-05-07 | 2020-10-02 | 中航飞机起落架有限责任公司 | Change-over valve and undercarriage turn control system |
| CN114030595A (en) * | 2021-11-18 | 2022-02-11 | 庆安集团有限公司 | Time-controllable differential motion actuating device |
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