CN107461374A - A kind of undercarriage control pressurized strut hydraulic control valve - Google Patents
A kind of undercarriage control pressurized strut hydraulic control valve Download PDFInfo
- Publication number
- CN107461374A CN107461374A CN201710805111.3A CN201710805111A CN107461374A CN 107461374 A CN107461374 A CN 107461374A CN 201710805111 A CN201710805111 A CN 201710805111A CN 107461374 A CN107461374 A CN 107461374A
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- Prior art keywords
- valve
- chamber
- spring
- pressurized strut
- hydraulic control
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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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
Abstract
The invention discloses a kind of undercarriage control pressurized strut hydraulic control valve, including valve body, valve body is provided with first, fourth ozzle connected with pressurized strut rodless cavity, rod chamber, second and third ozzle connected with hydraulic system.Damper piston and travelling piston are interval with left chamber, thermally safe valve is provided between damper piston and travelling piston；Set the second oil circuit on damper piston, thermally safe valve is by the chamber between damper piston and travelling piston and the second oil communication and throttles；The fluid compensation passage connected with the second ozzle is provided with valve body；Right chamber partition is provided with hydraulic control valve, seal receptacle.Hydraulic lock, fluid differential compensation, oil circuit pulse, thermally safe defencive function are integrated in same component by the hydraulic control valve; the opening and closing of hydraulic lock, the conversion of fluid compensation function and oil circuit pulse, the unlatching of thermally safe defencive function can automatic synchronization action, eventually through control pressurized strut realize carrying, quick set-down and the oil circuit pulse of undercarriage, thermally safe defencive function.
Description
Technical field
The invention belongs to undercarriage technology, and in particular to a kind of undercarriage control pressurized strut hydraulic control valve.
Background technology
The function of undercarriage control pressurized strut is：1. in the presence of hydraulic oil, driving gear up, put down；2.
Under the collective effect of hydraulic control valve and retractable actuating cylinder built-in machines lock, undercarriage is locked in and packed up or extended position shape
State, undercarriage is set to carry.
As present generation aircraft is to wheel-retracting gear and the continuous improvement of system reliability requirement, typically in folding and unfolding start
Set in cylinder outside mechanical lock, also need to set hydraulic lock, such mechanical lock and hydraulic lock act on simultaneously, can improve undercarriage locking
Reliability.
Current retractable actuating cylinder is generally single pole double acting structure form, living in the case of hydraulic fluid flow rate identical
Stopper rod stretching is slower than the speed of retraction, can thus influence gear up or the speed put down.Therefore, need to typically rise and fall
Special hydraulic circuit and corresponding control valve are set in frame extension and retraction system, the stream of retractable actuating cylinder rodless cavity is entered with compensation
Amount, with the speed for improving gear up or putting down.When undercarriage stowage in place, magnetic valve replace when, system oil return can be caused
Road pressure moment, which rises, produces hydraulic energy, typically relief valve or energy absorption device need to be set on system oil return road, to avoid causing receipts
The mechanical lock built in pressurized strut is put to unlock.Meanwhile in order to avoid locked cavity oil liquid temperature rise hypertonia damages, typically
Relief valve or oil circuit need to be set.
The control valve of existing undercarriage control pressurized strut, realizing hydraulic lock, fluid differential compensation and oil circuit pulse, heat peace
During all risk insurance protective function, completed generally by multiple independent hydraulic control components, can so increase hydraulic system and undercarriage
The complexity of jack design, while also bring along the problems such as dependency structure layout is difficult, weight increases, reliability reduces.
The content of the invention
It is in view of the above-mentioned problems, the present invention is intended to provide a kind of collection hydraulic pressure lock, fluid differential compensation and oil circuit pulse, thermally safe
Defencive function is designed at integral hydraulic control valve.
The technical scheme of the present invention that solves the problems, such as is：A kind of undercarriage control pressurized strut hydraulic control valve, including valve body, valve
It is provided with left chamber, right chamber room and the first oil circuit for connecting left and right two chambers in vivo；
Damper piston and travelling piston are interval with left chamber from left to right, heat peace is provided between damper piston and travelling piston
Full valve, is provided with the first spring between damper piston left end and valve body left side, damper piston right-hand member and travelling piston left end it
Between be connected with second spring；
Left chamber's opening position is corresponded on valve body and is provided with the first ozzle being connected with the rodless cavity of pressurized strut, and and hydraulic system
Second ozzle of connection；
The 3rd ozzle by hydraulic system and the first oil communication is provided with valve body；
Right chamber room opening position is corresponded on valve body and is provided with the 4th ozzle being connected with the rod chamber of pressurized strut；
Damper piston is provided with the second oil circuit that can be docked and connected with the first ozzle, the thermally safe valve can by damper piston and
Chamber between travelling piston and the second oil communication simultaneously throttle；
The valve body interior edge direction parallel with valve axis is provided with the fluid compensation passage connected with the second ozzle；
It is interval with hydraulic control valve, seal receptacle from left to right in right chamber room, the 5th bullet is provided between seal receptacle and hydraulic control valve
Spring, the 3rd oil circuit that the chamber between hydraulic control valve and seal receptacle can be connected with fluid compensation passage is provided with seal receptacle.
Specifically, the thermally safe valve includes the valve seat of cavity in band, the middle cavity of valve seat is stepped cavity, is divided into left end
Big chamber and the small chamber that is connected with big chamber；
Small intracavitary is provided with axially slidable valve element, and valve element left end is provided with sealing tapering, and big chamber left end is provided with matches somebody with somebody with sealing tapering
Close the seal tips of sealing；
Being provided with big chamber can be with the oil-through hole of the chamber between damper piston and travelling piston；
Valve element right-hand member stretches out small chamber, and valve element right-hand member is connected with spring base, and the 3rd spring, spring are provided between valve seat and spring base
Seat is fixedly connected with travelling piston left end；
Cavity S is set in the valve element, is provided with the steel ball seat being axially movable in cavity S, steel ball seat left end is provided with steel ball, steel ball seat
Right-hand member is provided with stopping means, and the 4th spring is provided between steel ball seat and stopping means；
The center in the sealing tapering is provided with the fuel feed hole that can be connected with cavity S, the fuel feed hole and the second oil communication, and this enters
Oilhole is blocked by steel ball, and valve element left end is radially provided with through hole, and the through hole connects with big chamber.
Further, the stopping means includes the hollow bush for being fixedly installed on valve element right-hand member, and the right-hand member of steel ball seat is inserted
Enter the hollow intracavitary of bushing, be provided with perpendicular to the direction of busing axis while interting the spacer pin into valve element and bushing.
Further, the left end of the valve body is provided with hollow spring spool, and the left end of the first spring is fixed on spring housing
In cylinder, the right-hand member of the first spring is fixedly connected with damper piston.
Further, valve body right-hand member is provided with end cap, and end cap abuts with seal receptacle.
Further, the fluid compensation passage right-hand member, which is provided with, blocks.
Remarkable result of the present invention is in particular in：
1. by hydraulic lock, fluid differential compensation, oil circuit pulse, thermally safe defencive function Integrated design in same component, simplify
Wheel-retracting gear, the complexity of undercarriage design of Hydraulic System is reduced, alleviate system weight, saved space, carry
The high reliability and safety of system and mechanism.
2. improve undercarriage pack up and extended position locking reliability, realize the constant situation of flow system flow
Under, undercarriage quick set-down.
3. eliminate oil circuit pulse, oil liquid temperature raises and causes safety hazards caused by pressure increase.
4. acted on pressurized strut built-in machines lock simultaneously, eventually through controlling pressurized strut to realize the packing up of undercarriage, put down
And carrying.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is hydraulic control valve locking states structural representation of the present invention.
Fig. 2 is thermally safe valve structure schematic diagram.
Fig. 3 is operation principle schematic diagram when hydraulic control valve of the present invention supplies gear up.
Fig. 4 supplies operation principle schematic diagram when gear down for hydraulic control valve of the present invention.
Operation principle schematic diagram when Fig. 5 is hydraulic control valve oil passage pulse buffer.
Fig. 6 is operation principle schematic diagram when thermally safe valve is opened in hydraulic control valve.
In figure：1- valve bodies, 2- damper pistons, 3- second springs, 4- move about piston, 5- hydraulic control valve, the springs of 6- the 5th, 7-
Block, 8- end caps, 9- seal receptacles, the thermally safe valve of 10-, 11- left chamber, the springs of 12- first, 13- right chambers room, 14- spring housings
Cylinder, 15- valve seats, the springs of 16- the 3rd, 17- valve elements, 18- spring bases, 19- bushings, 20- spacer pins, the springs of 21- the 4th, 22- steel
Ball seat, 23- steel balls, 24- pressurized struts, 25- fluid compensation passage, the big chambers of 26-, 27- sealings tapering, 28- seal tips, 29- mistakes
Oilhole, 30- fuel feed holes, the ozzles of 31- first, the ozzles of 32- second, the ozzles of 33- the 3rd, the ozzles of 34- the 4th, 35- through holes, 41-
One oil circuit, the oil circuits of 42- second, the oil circuits of 43- the 3rd.
Embodiment
For the ease of description, the relative position relation of each part（Such as：It is left and right etc.）Description be according to Figure of description
Butut direction be described, restriction effect is not played to the structure of this patent.
As shown in figs. 1 to 6, a kind of undercarriage control pressurized strut hydraulic control valve, including valve body 1, valve body 1 is interior to be provided with left chamber
Room 11, right chamber room 13 and the first oil circuit 41 for connecting left and right two chambers.
Be interval with damper piston 2 and travelling piston 4 in left chamber 11 from left to right, damper piston 2 and travelling piston 4 it
Between be provided with thermally safe valve 10.
The left end of the valve body 1 is provided with hollow spring spool 14.Set between the left end of damper piston 2 and the left side of valve body 1
There is the first spring 12.The left end of first spring 12 is fixed in spring spool 14, and the right-hand member and damper piston 2 of the first spring 12 are solid
Fixed connection.
Second spring 3 is connected between the right-hand member of damper piston 2 and the left end of travelling piston 4.
The opening position of left chamber 11 is corresponded on valve body 1 and is provided with the first ozzle 31 being connected with the rodless cavity of pressurized strut 24, with
And the second ozzle 32 being connected with hydraulic system.
The 3rd ozzle 33 for connecting hydraulic system with the first oil circuit 41 is provided with valve body 1.
The opening position of right chamber room 13 is corresponded on valve body 1 and is provided with the 4th ozzle 34 being connected with the rod chamber of pressurized strut 24.
Damper piston 2 is provided with the second oil circuit 42 that can be docked and connected with the first ozzle 31.
The thermally safe valve 10 includes the valve seat 15 of cavity in band, and the middle cavity of valve seat 15 is stepped cavity, is divided into left end
Big chamber 26 and the small chamber that is connected with big chamber 26.Small intracavitary is provided with axially slidable valve element 17.The left end of valve element 17 is provided with sealing
Tapering 27.The big left end of chamber 26 is provided with the seal tips 28 with sealing the fitted seal of tapering 27.Being provided with big chamber 26 can live with buffering
The oil-through hole 29 of chamber between plug 2 and travelling piston 4.The right-hand member of valve element 17 stretches out small chamber, and the right-hand member of valve element 17 is connected with
Spring base 18.The 3rd spring 16 is provided between valve seat 15 and spring base 18.Spring base 18 is fixedly connected with the travelling left end of piston 7.
Cavity S is set in the valve element 17, the steel ball seat 22 being axially movable is provided with cavity S.The left end of steel ball seat 22 is provided with steel ball 23.Steel
The right-hand member of ball seat 22 is provided with stopping means.The stopping means includes the hollow bush 19 for being fixedly installed on the right-hand member of valve element 17.Steel ball
The hollow intracavitary of the right-hand member insertion bushing 19 of seat 22.Intert simultaneously into the He of valve element 17 being provided with perpendicular to the direction of the axis of bushing 19
The spacer pin 20 of bushing 19.The 4th spring 21 is provided between steel ball seat 22 and bushing 19.The center in the sealing tapering 27 is provided with
The fuel feed hole 30 that can be connected with cavity S.The fuel feed hole 30 connects with the second oil circuit 42.The fuel feed hole 30 is blocked by steel ball 23, valve
The left end of core 17 is radially provided with through hole 35, and the through hole 35 connects with big chamber 26.
The thermally safe valve 10 can connect the chamber between damper piston 2 and travelling piston 4 simultaneously with the second oil circuit 42
Throttling.
The interior edge of valve body 1 is provided with the fluid connected with the second ozzle 32 with the direction of the diameter parallel of valve body 1 and compensates passage 25.Institute
State fluid compensation passage 25 right-hand member and be provided with blocking 7.
It is interval with hydraulic control valve 5, seal receptacle 9 from left to right in right chamber room 13.Between seal receptacle 9 and hydraulic control valve 5
Provided with the 5th spring 6.Passage 25 can be compensated by the chamber between hydraulic control valve 5 and seal receptacle 9 and fluid by being provided with seal receptacle 9
3rd oil circuit 43 of connection.The right-hand member of valve body 1 is provided with end cap 8, and end cap 8 abuts with seal receptacle 9.
The course of work of the hydraulic control valve is：
As shown in figure 1, the second ozzle 32, the 3rd ozzle 33 connect hydraulic system, the first ozzle 31 is with supplying receipts gear down
The rodless cavity connection of pressurized strut 24 is put, the 4th ozzle 34 is connected with the rod chamber of the retractable actuating cylinder 24 for undercarriage stowage.Ginseng
See Fig. 3, when undercarriage needs to pack up, system feed flow force feed enters in valve from the 3rd ozzle 33, promotes hydraulic control valve 5, overcomes
The power of 5th spring 6, the seal face of the left end of hydraulic control valve 5 is set to leave the left side of right chamber room 13, until the right-hand member of hydraulic control valve 5
Face abuts with the left side of seal receptacle 9, the rod chamber of retractable actuating cylinder 24 is connected with system oil-way, i.e., system hydraulic oil is through
Three ozzles 33, right chamber room 13, the side of hydraulic control valve 5, the rod chamber of the 4th ozzle 34 entrance retractable actuating cylinder 24.Simultaneously,
Hydraulic oil into left chamber 11 promotes travelling piston 4 to overcome second spring 3, the power of the 3rd spring 16, makes the left end of valve element 17
Sealing tapering 27 lift off a seat 15 seal tips 28, formed feed flow force feed circulation gap, make retractable actuating cylinder 24 without bar
Chamber connects with system oil-way, i.e. the hydraulic oil of rodless cavity is from the 31 buffered side of piston 2 of the first ozzle, thermally safe valve 10,
Two ozzles 32 return system, the piston rod retraction of retractable actuating cylinder 24 and then drive gear up.When gear up in place, supply
After oil system pressure release, under the rebound effect of the 5th spring 6, hydraulic control valve 5 is set to be reset to position shown in Fig. 1.Meanwhile second
Spring 3, the 3rd spring 16 effect respectively under, travelling piston 4, valve element 17 are reset to Fig. 1 positions, will be for gear up
Oil circuit automatic blocking.
Referring to Fig. 4, when undercarriage needs to put down, system feed flow force feed enters left chamber 11 from the second ozzle 32, now
Hydraulic oil in 3rd ozzle 33 is not involved in work.In the presence of hydraulic oil, valve element 17 overcomes the power of the 3rd spring 16, makes close
Envelope tapering 27 lift off a seat 15 seal tips 28, formed feed flow force feed circulation gap, make the rodless cavity of pressurized strut 24 with being
Oil passage of uniting connection, the increase of rodless cavity volume.Simultaneously as piston rod moves to right, make the oil return of the rod chamber of pressurized strut 24 through the 4th
Ozzle 34, the 3rd oil circuit 43, fluid compensation passage 25, form fluid compensation loop, the oil passage of rodless cavity are flowed into, so as to realize
The quick set-down of undercarriage.When gear down in place, after oil supply system pressure release, in the presence of the 3rd spring 16, sealed taper
Portion 27 contacts with the seal tips 28 of valve seat 15 and is in sealing state, oil circuit automatic blocking gear down will be supplied, with work
The dynamic built-in machines of cylinder 24 lock collective effect, enables undercarriage to carry.
Referring to Fig. 5, when oil liquid temperature raises, the hydraulic fluid pressure of the rodless cavity locking of pressurized strut 24 exceeds thermally safe valve 10
During the Opening pressure that middle steel ball 23 is set, in the presence of hydraulic oil, steel ball 23 overcomes the power of the 4th spring 21 to move to right, with oil-feed
Hole 30 departs from, and produces the gap of feed flow force feed circulation, i.e., thermally safe valve 10 opens pressure release, to prevent the locking of pressurized strut 24 without bar
The hypertonia of intracavitary and cause danger.
Referring to Fig. 6, when gear up in place, when magnetic valve replaces, the system oil-way pressure that is connected with the second ozzle 32
Moment raise, make sealing tapering 27 lift off a seat 15 seal tips 28, formed feed flow force feed circulation gap, generation be intended to enter
The hydraulic energy of the rodless cavity of pressurized strut 24, this hydraulic energy is simultaneously by promoting damper piston 2 to overcome the power of the first spring 12 to be absorbed
Fall, so as to avoid pressurized strut 24 from producing involuntary maneuver, cause danger.
It can be seen that from above operation principle：
A. when gear down, in the presence of hydraulic oil, the oil circuit of pressurized strut 24 can be converted to difference by hydraulic control valve automatically
Dynamic connection compensation oil circuit, oil passage is compensated by the fluid of oil return line, saves system energy, so as to realize that the quick of undercarriage is put
Under.
After gear down in place, hydraulic control valve can be by the oil circuit automatic blocking of pressurized strut 24, in pressurized strut 24
The mechanical lock collective effect put, enables pressurized strut 24 to carry.
B. when undercarriage needs to pack up, in the presence of hydraulic oil, travelling piston 4, hydraulic control valve 5 is driven to open hydraulic pressure
Lock makes the confession of pressurized strut 24, oil return line unimpeded, and then realizes gear up.
When gear up in place after, can absorb magnetic valve transposition when hydraulic energy caused by oil circuit moment, avoid causing work
The unlocking of the dynamic built-in machines of cylinder 24 lock, plays safety effect.
C. when the temperature of locked cavity fluid raises hypertonia, thermally safe valve 10 can be opened, by the locking of pressurized strut 24
Fluid discharge pressure release in chamber, plays safety effect.
The present invention is by hydraulic lock, fluid differential compensation, oil circuit pulse, thermally safe defencive function Integrated design in same component
It is interior, in the presence of hydraulic oil, the opening and closing of hydraulic lock, the conversion of fluid compensation function and oil circuit pulse, thermally safe protection work(
Can unlatching can automatic synchronization action, realize carrying, quick set-down and the oil of undercarriage eventually through control pressurized strut 24
Road pulse, thermally safe defencive function.
Claims (6)
1. a kind of undercarriage control pressurized strut hydraulic control valve, including valve body（1）, it is characterised in that：Valve body（1）It is interior to be provided with left chamber
Room（11）, right chamber room（13）And the first oil circuit for connecting left and right two chambers（41）；
Left chamber（11）Damper piston is inside interval with from left to right（2）With travelling piston（4）, damper piston（2）With travelling work
Plug（4）Between be provided with thermally safe valve（10）, damper piston（2）Left end and valve body（1）The first spring is provided between left side
（12）, damper piston（2）Right-hand member and travelling piston（4）Second spring is connected between left end（3）；
In valve body（1）Upper corresponding left chamber（11）Opening position is provided with and pressurized strut（24）Rodless cavity connection the first ozzle
（31）, and the second ozzle being connected with hydraulic system（32）；
In valve body（1）It is provided with hydraulic system and the first oil circuit（41）3rd ozzle of connection（33）；
In valve body（1）Upper corresponding right chamber room（13）Opening position is provided with and pressurized strut（24）Rod chamber connection the 4th ozzle
（34）；
Damper piston（2）Being provided with can be with the first ozzle（31）The second oil circuit being docked and connected（42）, the thermally safe valve
（10）Can be by damper piston（2）With travelling piston（4）Between chamber and the second oil circuit（42）Connect and throttle；
Valve body（1）Interior edge and valve body（1）The direction of diameter parallel is provided with and the second ozzle（32）The fluid compensation passage of connection
（25）；
In right chamber room（13）Hydraulic control valve is inside interval with from left to right（5）, seal receptacle（9）, seal receptacle（9）With hydraulic control valve
（5）Between be provided with the 5th spring（6）, in seal receptacle（9）Being provided with can be by hydraulic control valve（5）And seal receptacle（9）Between chamber
Passage is compensated with fluid（25）3rd oil circuit of connection（43）.
2. undercarriage control pressurized strut hydraulic control valve according to claim 1, it is characterised in that：The thermally safe valve
（10）Include the valve seat of cavity in band（15）, valve seat（15）Middle cavity be stepped cavity, be divided into the big chamber of left end（26）With with it is big
Chamber（26）The small chamber of connection；
Small intracavitary is provided with axially slidable valve element（17）, valve element（17）Left end is provided with sealing tapering（27）, big chamber（26）Left end
Provided with sealing tapering（27）The seal tips of fitted seal（28）；
Big chamber（26）On be provided with can be with damper piston（2）With travelling piston（4）Between chamber oil-through hole（29）；
Valve element（17）Right-hand member stretches out small chamber, and valve element（17）Right-hand member is connected with spring base（18）, valve seat（15）With spring base（18）
Between be provided with the 3rd spring（16）, spring base（18）With travelling piston（7）Left end is fixedly connected；
The valve element（17）Cavity S is inside set, the steel ball seat being axially movable is provided with cavity S（22）, steel ball seat（22）Left end is set
There is steel ball（23）, steel ball seat（22）Right-hand member is provided with stopping means, and steel ball seat（22）The 4th spring is provided between stopping means
（21）；
The sealing tapering（27）Center be provided with the fuel feed hole that can be connected with cavity S（30）, the fuel feed hole（30）With the second oil
Road（42）Connection, and the fuel feed hole（30）By steel ball（23）Closure, valve element（17）Left end is radially provided with through hole（35）, the through hole
（35）With big chamber（26）Connection.
3. undercarriage control pressurized strut hydraulic control valve according to claim 2, it is characterised in that：The stopping means bag
Include and be fixedly installed on valve element（17）The hollow bush of right-hand member（19）, steel ball seat（22）Right-hand member insertion bushing（19）Middle cavity
It is interior, perpendicular to bushing（19）The direction of axis is provided with interts into valve element simultaneously（17）And bushing（19）Spacer pin（20）.
4. undercarriage control pressurized strut hydraulic control valve according to claim 1, it is characterised in that：The valve body（1）'s
Left end is provided with hollow spring spool（14）, the first spring（12）Left end be fixed on spring spool（14）It is interior, the first spring
（12）Right-hand member and damper piston（2）It is fixedly connected.
5. undercarriage control pressurized strut hydraulic control valve according to claim 1, it is characterised in that：Valve body（1）Right-hand member is set
There is end cap（8）, end cap（8）With seal receptacle（9）Abut.
6. undercarriage control pressurized strut hydraulic control valve according to claim 1, it is characterised in that：The fluid compensation is logical
Road（25）Right-hand member, which is provided with, to be blocked（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805111.3A CN107461374B (en) | 2017-09-08 | 2017-09-08 | Hydraulic control valve of undercarriage retractable actuator cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710805111.3A CN107461374B (en) | 2017-09-08 | 2017-09-08 | Hydraulic control valve of undercarriage retractable actuator cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107461374A true CN107461374A (en) | 2017-12-12 |
| CN107461374B CN107461374B (en) | 2020-03-27 |
Family
ID=60552022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710805111.3A Active CN107461374B (en) | 2017-09-08 | 2017-09-08 | Hydraulic control valve of undercarriage retractable actuator cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461374B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869418A (en) * | 2018-07-12 | 2018-11-23 | 中航飞机起落架有限责任公司 | A kind of undercarriage turning system bidirectional safe integrated control valve |
| CN108974333A (en) * | 2018-08-17 | 2018-12-11 | 中航飞机起落架有限责任公司 | A kind of full liquid shock absorber and compensation device |
| CN110091979A (en) * | 2019-04-12 | 2019-08-06 | 西安飞机工业（集团）有限责任公司 | A kind of undercarriage folding and unfolding control method and hydraulic manual control valve |
| 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 |
| CN111980982A (en) * | 2020-07-24 | 2020-11-24 | 中国航空工业集团公司西安飞行自动控制研究所 | Positive displacement hydraulic safety device |
| CN114030595A (en) * | 2021-11-18 | 2022-02-11 | 庆安集团有限公司 | Time-controllable differential motion actuating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354854A (en) * | 2014-10-29 | 2015-02-18 | 中航飞机起落架有限责任公司 | Multifunctional undercarriage jackstay 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 |
| 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 |
-
2017
- 2017-09-08 CN CN201710805111.3A patent/CN107461374B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354854A (en) * | 2014-10-29 | 2015-02-18 | 中航飞机起落架有限责任公司 | Multifunctional undercarriage jackstay 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 |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869418A (en) * | 2018-07-12 | 2018-11-23 | 中航飞机起落架有限责任公司 | A kind of undercarriage turning system bidirectional safe integrated control valve |
| CN108974333A (en) * | 2018-08-17 | 2018-12-11 | 中航飞机起落架有限责任公司 | A kind of full liquid shock absorber and compensation device |
| CN110091979A (en) * | 2019-04-12 | 2019-08-06 | 西安飞机工业（集团）有限责任公司 | A kind of undercarriage folding and unfolding control method and hydraulic manual control valve |
| 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 |
| CN111980982A (en) * | 2020-07-24 | 2020-11-24 | 中国航空工业集团公司西安飞行自动控制研究所 | Positive displacement hydraulic safety device |
| 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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|---|---|
| CN107461374B (en) | 2020-03-27 |
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