CN108869418B - 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
- Publication number
- CN108869418B CN108869418B CN201810762273.8A CN201810762273A CN108869418B CN 108869418 B CN108869418 B CN 108869418B CN 201810762273 A CN201810762273 A CN 201810762273A CN 108869418 B CN108869418 B CN 108869418B
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- ozzle
- valve body
- chamber
- built
- steel ball
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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
- 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
Abstract
The invention discloses a kind of undercarriage turning system bidirectional safe integrated control valve, it includes being provided with first, the valve body (13) of two ozzles, independent of each other first is equipped among valve body, two through-hole interconnection (L2, L1), first ozzle is connected to the left driving chamber (I) of the left control ozzle (B) of throttle and pressurized strut of turning, second ozzle is connected to the right driving chamber (II) of the right control ozzle (G) of throttle and pressurized strut of turning, first ozzle connect the first built-in lock (III) being provided in the first cavity (a) to be formed for controlling the turning right driving chamber oil circuit safety of pressurized strut with valve body left end, second ozzle connect the second built-in lock (IV) being provided in the second cavity (b) to be formed for controlling the turning left driving chamber oil circuit safety of pressurized strut with valve body right end, first chamber Body connects the second built-in lock through the first through-hole interconnection, and the second cavity connects the first built-in lock through the second through-hole interconnection.
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 includes the first spring, the first spring set gradually from the first ozzle to valve body one end
First cavity is separated into the first left chamber and the first right chamber by seat, the first steel ball, the first spring base, through the between the first left and right chamber
The oblique through-hole connection of the first of one spring base bottom setting, under the action of the first spring, a left side for the first steel ball and valve body
End in contact, and the first sealing state is formed in the matching part of the first steel ball and valve body, to close the intracorporal peace of the first chamber
Full pressure release oil circuit；When the intracorporal oil circuit pressure of the second chamber is higher than the cracking pressure of the first steel ball of the first built-in lock, the first steel
Ball separates with valve body and generates gap and circulate for hydraulic oil, that is, the intracorporal safety relief oil circuit of the first chamber is opened, thus ditch
Oil circuit between logical turning 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, the second bullet
Second cavity is separated into the second left chamber and the second right chamber, passed through between the second left and right chamber by spring abutment, the second steel ball, second spring seat
The oblique through-hole connection of the second of second spring seat bottom setting, under the action of second spring, the second steel ball connects with valve body
Touching, and the second sealing state is formed in the matching part of the second steel ball and valve body, it is let out with closing the intracorporal safety of the second chamber
Pressure oil road；When the intracorporal oil circuit pressure of the first chamber be higher than the second built-in lock the second steel ball cracking pressure when, the second 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 second chamber, turns to link up
Oil circuit between curved pressurized strut 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 are as follows:
The present invention two independent built-ins locks of Integrated design and is accordingly connected to oil circuit hole in a component, solves pair
The individual secure of oil circuit pressure controls between throttle and turning two hydraulic-driven functional chambers of pressurized strut in turning system, mentions
The high safety of the reliability and mechanism of turning system work, eliminates safety hazards caused by oil liquid pressure increases, letter
Undercarriage turning system safety control function part is changed, has reduced the complexity of undercarriage turning system design, alleviate system
Weight has saved space, avoids the deficiencies of absolute construction part occupied space increases, weight increases, connecting portion increases.
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 (locking states) structure of the present invention and principle
Schematic diagram, wherein (2) are the K-K cross-sectional view of (1).
Fig. 2 is a kind of left welding system pipe of undercarriage turning system bidirectional safe integrated control valve (locking states) of the present invention
Operation principle schematic diagram when mouth A pressure supply, wherein (2) are the K-K cross-sectional view of (1).
Fig. 3 is a kind of right welding system pipe of undercarriage turning system bidirectional safe integrated control valve (locking states) of the present invention
Operation principle schematic diagram when mouth H pressure supply, wherein (2) are the K-K cross-sectional view of (1).
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-
Two stop collars, 7- second adjustment washer, 8- second seal, 9- second spring, the second ozzle of 10-, 11- second spring seat,
The second steel ball of 12-, 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-, F-
Right safe 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 a left side for throttle 17 and turning pressurized strut 16 in undercarriage turning system
The safe independent control function of two oil circuits that driving chamber I is connected to right driving chamber II is integrated in one kind in same valve body 13
Undercarriage turning system bidirectional safe integrated control valve passes through the first ozzle 1 and the second ozzle 10 and turning pressurized strut respectively
Two oil circuit connections that 16 left driving chamber I is connected to right driving chamber II.
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, the safety of the control turning right driving chamber II of pressurized strut 16 and its connection oil circuit；Second ozzle 10 and 13 other side of valve body
It is cooperatively connected in the hollow cavity formed provided with the second built-in lock IV, the control turning left driving chamber I of pressurized strut 16 and its connection
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 oil communication of the first ozzle 1 and the left driving chamber I of turning pressurized strut 16, in the first steel ball 14
It contacts to form the close of 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
Seal apparatus, I pressure release of driving chamber to the left when for opening and closing the turning right driving chamber II of pressurized strut 16 and its connection oil path high-pressure
Safety oil-way, 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 body
The hollow cavity formed between 13 is sequentially installed with second spring 9, second spring seat 11 and the second steel ball 12,10 He of the second ozzle
13 matching part of valve body is sequentially installed with second seal 8, second adjustment washer 7 and the second stop collar 6, the second ozzle
10 with the oil communication of the right driving chamber II of turning pressurized strut 16, be respectively equipped with second on the second steel ball 12 and valve body 13
The sealing of sealing spherical surface M2 and second point side N2 contacts the sealing device to form the second built-in lock IV, makees for opening and closing turning
The safety oil-way of II pressure release of driving chamber to the right, second adjustment washer 7 can be used when the dynamic left driving chamber I of cylinder 16 and its connection oil path high-pressure
In the cracking pressure for adjusting the second built-in lock IV.
The operation principle of the present invention is that:
As shown in Figure 1, the left welding system ozzle A and right welding system ozzle H of throttle 17 and turning system oil circuit connection.
Left control ozzle B of the throttle 17 through throttle 17, the left driving ozzle D for pressurized strut 16 of turning and turning pressurized strut 16
Left driving chamber I is connected to, and locked cavity of this oil circuit simultaneously between the left safe ozzle C and the second built-in lock IV of control valve connects
It is logical.Right control ozzle G of the throttle 17 through throttle 17, the right driving ozzle E for pressurized strut 16 of turning and turning pressurized strut
16 right driving chamber II is connected to, this oil circuit while the locking between the right safe ozzle F and the first built-in lock III of control valve
Chamber connection.
Referring to fig. 2, hydraulic through throttle 17, throttle 17 when the left welding system ozzle A pressure supply of throttle 17
Left control ozzle B, turn pressurized strut 16 left driving ozzle D enter turning pressurized strut 16 left driving chamber I, thus realize turn
I pressure supply of left driving chamber of curved pressurized strut 16 is turned, and fuel feeding is hydraulic while passing through the left safe ozzle C of control valve, through the first bullet
The first through-hole interconnection L2 on the first oblique through-hole L3, valve body 13 on spring abutment 15 enters the left safe ozzle of control valve
Locked cavity between C and the second built-in lock IV, at this point, the oil liquid of the right driving chamber II of turning pressurized strut 16 is through pressurized strut 16 of turning
Right driving ozzle E, the right control ozzle G of throttle 17, throttle 17 and throttle 17 right welding system ozzle H into
Enter system oil return, oil return is hydraulic while passing through the right safe ozzle F of control valve, oblique logical through second on second spring seat 11
The second through-hole interconnection L1 on hole L4, valve body 13 enters between the right safe ozzle F and the first built-in lock III of control valve
Locked cavity.
It is hydraulic through throttle 17, throttle 17 when the right welding system ozzle H pressure supply of throttle 17 referring to Fig. 3
Right control ozzle G, turn pressurized strut 16 right driving ozzle E enter turning pressurized strut 16 right driving chamber II, to realize
II pressure supply of the right driving chamber turning of turning pressurized strut 16, fuel feeding is hydraulic while passing through the right safe ozzle F of control valve, through second
The second through-hole interconnection L1 on the second oblique through-hole L4, valve body 13 on spring base 11 enters the right bursting tube of control valve
Locked cavity between mouth F and the first built-in lock III, at this point, the oil liquid of the left driving chamber I of turning pressurized strut 16 is through pressurized strut of turning
16 left driving ozzle D, the left control ozzle B of throttle 17, throttle 17 and throttle 17 left welding system ozzle A
Into system oil return, oil return is hydraulic while passing through the left safe ozzle C of control valve, oblique through first on the first spring base 15
The first through-hole interconnection L2 on through-hole L3, valve body 13 enter control valve left safe ozzle C and the second built-in lock IV it
Between locked cavity.
Referring to fig. 4, side oil circuit peace is controlled when II oil circuit pressure of right driving chamber of turning pressurized strut 16 is higher than control valve
It is hydraulic to overcome the first spring 2 when the cracking pressure of the first full built-in lock III, so that the first steel ball 14 is left valve body 13, In
Formation is circulated for hydraulic oil between first sealing spherical surface M1 of the first steel ball 14 and the first sealing point side N1 of valve body 13
Gap, hydraulic oil in turn pass through control valve the first spring base 15 on first oblique through-hole L3, Zuo Anquan ozzle C, turning
The oil communication of the left driving chamber I of the left driving ozzle D and turning pressurized strut 16 of pressurized strut 16, realizes insurance pressure release, plays peace
Full effect.After pressure release, under the action of the first spring 2, the first steel ball 14 resets, and the first of the first steel ball 14 is made to seal spherical surface M1
It contacts to form sealing state with the first sealing point side N1 of valve body 13, realizes the right driving chamber II of control turning pressurized strut 16
III locking of the first built-in lock of oil circuit safety relief.
Referring to Fig. 5, the side oil circuit safety is controlled when I oil circuit pressure of left driving chamber of turning pressurized strut 16 is higher than control valve
The second built-in lock IV cracking pressure when, it is hydraulic to overcome second spring 9, so that the second steel ball 12 is left valve body 13,
It is formed between second sealing spherical surface M2 of two steel balls 12 and the second sealing point side N2 of valve body 13 between hydraulic oil circulation
Gap, hydraulic oil pass through the second oblique through-hole L4, right safe ozzle F, turning work on the second spring seat 11 of control valve in turn
The oil communication of the right driving chamber II of the right driving ozzle E and turning pressurized strut 16 of dynamic cylinder 16, realizes insurance pressure release, plays safety
Effect.After pressure release, under the action of second spring 9, the second steel ball 12 reset, make the second steel ball 12 second seal spherical surface M2 with
Second sealing point side N2 of valve body 13 contacts to form sealing state, realizes I oil of left driving chamber of control turning pressurized strut 16
IV locking of the second built-in lock of road safety relief.
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 with and is axially opposite and the first and second through-hole interconnection independent of each other (L2, L1) among the valve body, the valve shell
The first ozzle (1) is arranged in one end of body, and the second ozzle (10) are arranged in the other end, and the first ozzle is connected to the left control pipe of throttle
The left driving chamber (I) of mouth (B) and pressurized strut of turning, the second ozzle are connected to right control ozzle (G) and the turning actuation of throttle
The right driving chamber (II) of cylinder, the first ozzle connect in the first cavity (a) to be formed with valve body left end and are provided with for controlling
The first built-in lock (III) for the right driving chamber oil circuit safety of pressurized strut of turning, the second ozzle connect to be formed the with valve body right end
The second built-in lock (IV) for controlling the turning left driving chamber oil circuit safety of pressurized strut, the first cavity are provided in two cavitys (b)
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) includes the first spring (2) set gradually from the first ozzle to valve body one end, first
First cavity is separated into the first left chamber and the first right chamber by spring base (15), the first steel ball (14), the first spring base, first left,
The first oblique through-hole (L3) between right chamber through the setting of the first spring base bottom is connected to, 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) includes the second spring (9) set gradually from the second ozzle to the valve body other end,
Second cavity is separated into the second left chamber and the second right chamber by two spring bases (11), the second steel ball (12), second spring seat, and second
The second oblique through-hole (L4) between left and right chamber through the setting of second spring seat bottom is connected to, 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
It states the first steel ball and is equipped with first equipped with the first sealing spherical surface (M1), the valve body left end and the matching part of the first steel ball
Sharp side (N1) is sealed, 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), and the matching part of the valve body right end and the second steel ball is set
Have 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 connects second built-in lock through first through-hole interconnection (L2).
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 connects the first built-in lock through second through-hole interconnection (L1).
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869418A CN108869418A (en) | 2018-11-23 |
| CN108869418B true CN108869418B (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810762273.8A Active CN108869418B (en) | 2018-07-12 | 2018-07-12 | A kind of undercarriage turning system bidirectional safe integrated control valve |
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| CN (1) | CN108869418B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7309231A (en) * | 1973-07-03 | 1975-01-07 | Doornes Bedrijfswagen Fab | CONTROL DEVICE FOR A DOUBLE ACTING LIFT CYLINDER. |
| CN2527742Y (en) * | 2001-11-09 | 2002-12-25 | 余文凌 | Bidirectional safety valve for displacement pump |
| 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 |
| CN104454723B (en) * | 2014-11-05 | 2016-06-01 | 中航飞机起落架有限责任公司 | A kind of landing gear strut pressurized strut function control valve |
| CN105156389B (en) * | 2015-09-06 | 2017-03-15 | 哈尔滨工业大学 | A kind of bidirectional relief valve |
| CN105937512B (en) * | 2016-06-30 | 2017-09-29 | 江苏金荣森制冷科技有限公司 | The method of work of adjusting flexible plunger type bidirection press relief valve |
| CN106314766B (en) * | 2016-11-25 | 2018-06-01 | 中航飞机起落架有限责任公司 | A kind of undercarriage actuating cylinder control lock |
| CN107461374B (en) * | 2017-09-08 | 2020-03-27 | 中航飞机起落架有限责任公司 | Hydraulic control valve of undercarriage retractable actuator cylinder |
| CN207454852U (en) * | 2017-11-21 | 2018-06-05 | 程飞 | A kind of double-direction relief valve |
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2018
- 2018-07-12 CN CN201810762273.8A patent/CN108869418B/en active Active
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| CN108869418A (en) | 2018-11-23 |
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