CN105836111B - A kind of pressurized strut with machine logic control ability - Google Patents
A kind of pressurized strut with machine logic control ability Download PDFInfo
- Publication number
- CN105836111B CN105836111B CN201610351068.3A CN201610351068A CN105836111B CN 105836111 B CN105836111 B CN 105836111B CN 201610351068 A CN201610351068 A CN 201610351068A CN 105836111 B CN105836111 B CN 105836111B
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- CN
- China
- Prior art keywords
- logic
- outer cylinder
- operating bar
- pressurized strut
- emergency
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/22—Operating mechanisms fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/26—Control or locking systems therefor
- B64C25/30—Control or locking systems therefor emergency actuated
Abstract
The present invention relates to a kind of pressurized struts with machine logic control ability, including outer cylinder（5）, outer cylinder（5）Outside arrange hydraulic oil-returning mouth pipe respectively（1）, hydro-logic outlet（2）, hydraulic inlet pipe（3）, cold air logic export pipe（4）, cold air inlet tube（6）Deng 5 ozzles, outer cylinder（5）Inside is mounted with emergency operating bar respectively（7）, conventional operating bar（8）, conventional stretching chamber is formed by sealing（10）Chamber is retracted with conventional（11）；Conventional operating bar（8）It is run by the stretching direction of pressurized strut, by control hydro-logic stroke or emergency logic stroke, executes and realize the logic control of pressurized strut.This invention simplifies the lock pressurized strut of undercarriage retracted position and undercarriage control pressurized strut logic control relations, reduce the complexity of Landing Gear System electrichydraulic control, improve the reliability of entire logic control system.
Description
Technical field
The present invention relates to plane hydraulic system structure-design technique fields, in particular to machine logic control ability
Actuation barrel structure.
Background technique
Before aircraft landing, to put down undercarriage normally, hydraulic system answers pressure supply undercarriage stowage position to lock pressurized strut, protects
The normal unlocking of undercarriage stowage position lock is demonstrate,proved, then pressure supply undercarriage control pressurized strut again guarantees that undercarriage is normally put down.In liquid
When pressing the system failure, emergency cold gas system should ensure that undercarriage stowage position lock emergent unlocking and pressure supply retractable actuating cylinder, make
Undercarriage emergency extension.
It include mainly two processes, first is that hydraulic during blow the gear down（Or cold air）Pressure supply retracted position locks actuation
Cylinder is unlocked, second is that undercarriage control pressurized strut makes gear down, there are apparent precedence relationships in the time for the two processes.Mesh
Before, retracted position lock pressurized strut unlocking and undercarriage control pressurized strut temporal logic control in terms of, remaining type substantially according to
By hydraulic（Emergency cold air）It pushes retracted position lock pressurized strut to unlock, and provides letter of unlocking by uplock stop switch switch
Number, it is then controlled by computer hydraulic（Emergency cold air）System pressure supply undercarriage control pressurized strut, puts down undercarriage reliably.
I.e. retracted position lock pressurized strut unlocking and undercarriage control pressurized strut logic control relation fully rely on electric signal and realize logic control
System, increases the complexity of Landing Gear System electrical control system, in addition, two processes pass through the hydraulic of parallel connection（Cold air）Pipeline
Independent pressure supply, and increase hydraulic（Cold air）The complexity of system.
Summary of the invention
（1）The purpose of the present invention
The purpose of the present invention：Simplify the lock pressurized strut of undercarriage retracted position and undercarriage control pressurized strut logic control
Relationship reduces the complexity of Landing Gear System electrichydraulic control.
（2）Technical solution of the present invention
The technical solution adopted by the present invention is that：A kind of pressurized strut with machine logic control ability, including outer cylinder, cold air
Inlet tube, cold air logic export pipe, hydraulic oil-returning mouth pipe, hydro-logic outlet, hydraulic inlet pipe, emergency operating bar, routine
Operating bar；Direction, the i.e. direction A are stretched out along pressurized strut outside outer cylinder, is connected through a screw thread and is mounted with five ozzles respectively, be followed successively by
Cold air inlet tube, cold air logic export pipe, hydraulic inlet pipe, hydro-logic outlet, hydraulic oil-returning mouth pipe；In pressurized strut outer cylinder
On along pressurized strut stretch out direction arrange five ozzles, for connecting external accessory；Outer barrel is along pressurized strut stretching side
To the i.e. direction A is separately installed with emergency operating bar, conventional operating bar, so that routine actuating travel L0 is greater than hydro-logic stroke
L1, conventional actuating travel L0 restart distance L2 less than hydraulic, and hydro-logic stroke L1 is equal to emergency logic stroke L3；And it meets an urgent need
It is normal by sealing formation that operating bar and outer cylinder form stretching chamber of meeting an urgent need, emergency operating bar, conventional operating bar and outer cylinder by sealing
Rule stretch out chamber, conventional operating bar and outer cylinder and form conventional retraction chamber by sealing.
It is pressed when conventional operating bar and stretches out direction operation, make conventional stretching chamber expansion, hydro-logic stroke L1 reduces, until routine
When operating bar big end end face B is overlapped with outer cylinder upper installing hole edge C, hydraulic inflow controlled mechanism, while conventional retraction chamber is pressed
Contracting executes itself actuation, realizes pressurized strut logic control.
When conventional operating bar stretches out chamber and expand by direction operation, emergency is stretched out, emergency logic stroke L3 reduces, until emergency is made
Lever end face G with cold air logic export pipe when outer cylinder mounting hole edge D is overlapped so that air pressure flows into controlled mechanism, while conventional
Retraction chamber is compressed, itself actuation is executed, and realizes pressurized strut logic control.
（3）Beneficial effects of the present invention:
Technical solution of the present invention can reduce the complexity of plane hydraulic system, make the work transfer medium of controlled mechanism from
Oil liquid-electric signal-oil liquid indirect transfer is transformed into the direct transmitting of oil liquid-oil liquid, i.e., control planning is from by oil liquid and electricity
Signal realize jointly be transformed into relies solely on oil liquid realization, while by between control mechanism and controlled mechanism oil liquid driving and
Connection mode is transformed into series system, hence it is evident that the quantity and oil liquid flow path for reducing fluid pressure line are significantly improved and entirely patrolled
Collect the reliability of control system.
Detailed description of the invention
Fig. 1 is the pressurized strut internal structure chart with logic control ability；
Fig. 2 is the pressurized strut logic control working principle diagram with logic control ability.
Specific embodiment
Embodiments of the present invention are：A kind of pressurized strut with machine logic control ability, as shown in Figure 1, main packet
Include hydraulic oil-returning mouth pipe 1, hydro-logic outlet 2, hydraulic inlet pipe 3, cold air logic export pipe 4, outer cylinder 5, cold air inlet tube
6, emergency operating bar 7, conventional operating bar 8 etc..
Direction is stretched out along pressurized strut on outer cylinder 5, if A is to shown, arranges five ozzles, is followed successively by cold air inlet tube 6, cold
Gas logic export pipe 4, hydraulic inlet pipe 3, hydro-logic outlet 2 and hydraulic oil-returning mouth pipe 1.Each ozzle and outer cylinder 5 pass through spiral shell
Line connection, be separately connected external accessory, as shown in Fig. 2, include emergency system pressure supply mouth 12, hydraulic system pressure supply mouth 13,
Hydraulic system oil return opening 14 and controlled mechanism 15.Each ozzle compresses sealing ring by nut and reaches sealing function, and can be according to peace
Dress needs to rotate within the scope of 360 ° around installation axle, to change ozzle direction and height, the installation of Different Logic pipeline can be suitble to need
It asks.
Direction, the i.e. direction A are stretched out along pressurized strut inside outer cylinder 5, is separately installed with emergency operating bar 7, conventional operating bar 8,
The relative position of each ozzle and emergency operating bar 7, conventional operating bar 8 should make conventional actuating travel L0 be greater than hydro-logic stroke
L1, conventional actuating travel L0 restart distance L2 less than hydraulic, and hydro-logic stroke L1 is equal to emergency logic stroke L3；And it meets an urgent need
Operating bar 7 and outer cylinder 5 form emergency by sealing and stretch out chamber 9, and emergency operating bar 7, conventional operating bar 8 and outer cylinder 5 pass through sealing
It forms routine and stretches out chamber 10, conventional operating bar 8 and outer cylinder 5 pass through sealing and form routine retraction chamber 11.
3 crucial strokes and 1 limiting distance are related generally to during the pressurized strut logic control, respectively conventional actuation
Stroke L0（The distance of conventional 8 end face E of operating bar to 5 end face F of outer cylinder is used for pressurized strut itself actuation）, hydro-logic stroke L1
（Conventional 8 big end end face B of operating bar to hydro-logic outlet 2 in 5 upper installing hole edge C distance of outer cylinder, for controlled mechanism
Hydraulic logical control）, emergency logic stroke L3（Emergency 7 end face G of operating bar installs peritreme in outer cylinder 5 to cold air logic export pipe 4
The distance of D, for the emergency logic control to controlled mechanism）And hydraulic restart distance L2（7 end face H of operating bar meet an urgent need to liquid
Press inlet tube 3 in 5 upper installing hole edge J distance of outer cylinder, for guaranteeing restarting for hydraulic logical control after emergency logic control）.
When pressurized strut internal structure of the invention is in full indentation state shown in FIG. 1, conventional operating bar 8 is by stretching direction
Operation expands the conventional chamber 10 that stretches out, and hydro-logic stroke L1 reduces, until pacifying on 8 big end end face B of conventional operating bar and outer cylinder 5
When filling peritreme C coincidence, hydraulic inflow controlled mechanism 15,15 actuation of controlled mechanism, while conventional retraction chamber 11 is compressed, it is conventional
Actuating travel L0 reduces, until 8 small end end face E of conventional pressurized strut is overlapped with 5 upper surface F of outer cylinder, executes pressurized strut itself actuation, complete
At pressurized strut logic control, that is, realize the hydraulic control relationship between pressurized strut and controlled mechanism.
Equally, when pressurized strut is in full indentation state, conventional operating bar 8 stretches out chamber 9 and expands by direction operation, emergency is stretched out
Greatly, emergency logic stroke L3 reduces, and is overlapped until emergency 7 end face G of operating bar installs peritreme D in outer cylinder 5 with cold air logic export pipe 4
When, so that air pressure flows into controlled mechanism 15,15 actuation of controlled mechanism, while conventional retraction chamber 11 is compressed, conventional actuating travel
L0 reduces, until 8 small end end face E of conventional pressurized strut is overlapped with 5 upper surface F of outer cylinder, executes pressurized strut itself actuation, completes pressurized strut
Logic control realizes the pressure control relationship between pressurized strut and controlled mechanism.
In addition, to guarantee that pressurized strut can execute conventional hydraulic logic control, conventional actuation row again after emergency logic control
Journey L0 should be less than it is hydraulic restart distance L2, in this way, the conventional chamber 10 that stretches out is communicated with hydraulic system always, even if starting emergency
System nor affects on the subsequent manipulation of hydraulic control, increases the remaining regulating power of the logic control of the pressurized strut.
It is hydraulic between pressurized strut and controlled mechanism of the invention（Cold air）Access is cascade, i.e. system oil liquid（It is cold
Gas）Pressurized strut of the invention is first flowed into, then flows into controlled mechanism 18 from its ozzle again, is typical hydraulic（Cold air）Pipeline string
Connection, machine logic control form avoid first flowing into traditional pressurized strut from hydraulic system pressure supply mouth using oil liquid, receive electric signal
Afterwards, oil liquid（Cold air）Again from hydraulic（Cold air）System pressure supply mouth flows into the parallel hydraulic of controlled mechanism through another pipeline（Cold air）Pipe
Road, electric signal logic control form.
Claims (5)
1. a kind of pressurized strut with machine logic control ability, including hydraulic oil-returning mouth pipe（1）, hydro-logic outlet（2）,
Hydraulic inlet pipe（3）, cold air logic export pipe（4）, outer cylinder（5）, cold air inlet tube（6）, emergency operating bar（7）, conventional actuation
Bar（8）；Outer cylinder（5）Direction, the i.e. direction A are stretched out along pressurized strut in outside, are connected through a screw thread and are mounted with five ozzles respectively, successively
For cold air inlet tube（6）, cold air logic export pipe（4）, hydraulic inlet pipe（3）, hydro-logic outlet（2）, hydraulic oil-returning mouth
Pipe（1）, above-mentioned five ozzles, for connecting external accessory；Outer cylinder（5）Direction, the i.e. direction A are stretched out along pressurized strut in inside,
It is separately installed with emergency operating bar（7）, conventional operating bar（8）, so that conventional actuating travel（L0）, i.e., make for pressurized strut itself
It is dynamic, it is conventional operating bar（8）End face E is to outer cylinder（5）The distance of end face F is greater than hydro-logic stroke（L1）, that is, be greater than for pair
The hydraulic logical control of controlled mechanism, conventional operating bar（8）Big end end face B is to hydro-logic outlet（2）In outer cylinder（5）On
The distance of peritreme C is installed；Conventional actuating travel（L0）Restart distance less than hydraulic（L2）, that is, it is less than for guaranteeing emergency logic
After control hydraulic logical control restart, emergency operating bar（7）End face H is to hydraulic inlet pipe（3）In outer cylinder（5）Upper installation
The distance of peritreme J；Hydro-logic stroke（L1）Equal to emergency logic stroke（L3）, that is, it is equal to and is patrolled for the emergency to controlled mechanism
Collect control, emergency operating bar（7）End face G is to cold air logic export pipe（4）In outer cylinder（5）The distance of peritreme D is installed；Accordingly
, all kinds of strokes have determined relative position of each ozzle on outer cylinder；And emergency operating bar（7）And outer cylinder（5）By sealing shape
Chamber is stretched out at emergency（9）, operating bar of meeting an urgent need（7）, conventional operating bar（8）And outer cylinder（5）Conventional stretching chamber is formed by sealing
（10）, conventional operating bar（8）And outer cylinder（5）Conventional retraction chamber is formed by sealing（11）.
2. a kind of pressurized strut with machine logic control ability according to claim 1, it is characterized in that when conventional actuation
Bar（8）By direction operation is stretched out, make conventional stretching chamber（10）Expand, hydro-logic stroke（L1）It reduces, until conventional operating bar（8）
Big end end face (B) and outer cylinder（5）When upper installing hole edge (C) is overlapped, hydraulic inflow controlled mechanism (15), while conventional retraction chamber
（11）It is compressed, executes itself actuation, realize pressurized strut logic control.
3. a kind of pressurized strut with machine logic control ability according to claim 1, it is characterized in that when conventional actuation
Bar（8）By stretching out, direction is run, emergency stretches out chamber（9）Expand, logic stroke of meeting an urgent need（L3）It reduces, until emergency operating bar（7）End
Face (G) and cold air logic export pipe（4）In outer cylinder（5）When peritreme (D) coincidence is installed, so that air pressure flows into controlled mechanism (15),
Conventional retraction chamber simultaneously（11）It is compressed, executes itself actuation, realize pressurized strut logic control.
4. a kind of pressurized strut with machine logic control ability according to claim 1, it is characterized in that emergency stretches out chamber
（9）, conventional stretch out chamber（10）, conventional retraction chamber（11）Sealing be to be sealed by sealing ring.
5. described in any item a kind of pressurized struts with machine logic control ability according to claim 1-4, it is characterized in that making
Hydraulic path between dynamic cylinder and controlled mechanism (15) is cascade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351068.3A CN105836111B (en) | 2016-05-25 | 2016-05-25 | A kind of pressurized strut with machine logic control ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610351068.3A CN105836111B (en) | 2016-05-25 | 2016-05-25 | A kind of pressurized strut with machine logic control ability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105836111A CN105836111A (en) | 2016-08-10 |
| CN105836111B true CN105836111B (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610351068.3A Active CN105836111B (en) | 2016-05-25 | 2016-05-25 | A kind of pressurized strut with machine logic control ability |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105213B (en) * | 2016-11-24 | 2020-02-07 | 中航贵州飞机有限责任公司 | Current limiting and heat dissipating integrated device |
| 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 |
| CN110065623A (en) * | 2019-04-12 | 2019-07-30 | 西安飞机工业（集团）有限责任公司 | A kind of landing gear uplock for airplanes structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2220699B1 (en) * | 1973-03-09 | 1978-03-10 | Commissariat Energie Atomique | |
| FR2922190B1 (en) * | 2007-10-11 | 2010-04-09 | Eurocopter France | RETRACTION CYLINDER, GYRO AERIAL LIGHTER PROVIDED WITH SUCH A RETRACTION CYLINDER |
| US8827205B2 (en) * | 2009-05-08 | 2014-09-09 | Spectrum Aeronautical, Llc | Pneumatic blow-down actuator |
| JP5606044B2 (en) * | 2009-11-10 | 2014-10-15 | 住友精密工業株式会社 | ELECTRO-HYDRAULIC ACTUATOR EXCELLENT IN SNAVING, DRIVE DEVICE USED FOR THE SAME, AND CONTROL METHOD USED FOR THE SAME |
| FR2998263B1 (en) * | 2012-11-22 | 2015-07-03 | Messier Bugatti Dowty | MECHANICAL ACTUATOR WITH HYDRAULIC DAMPING DEVICE |
| CN203114775U (en) * | 2013-01-29 | 2013-08-07 | 中国航空工业集团公司西安飞机设计研究所 | Locking actuator cylinder for plane cabin door |
| CN203404156U (en) * | 2013-08-08 | 2014-01-22 | 江西洪都航空工业集团有限责任公司 | Unlocking actuating cylinder capable of resisting oil return pressure |
| CN104930015A (en) * | 2015-05-13 | 2015-09-23 | 中航飞机起落架有限责任公司 | Oil gas type load reduction pneumatic actuator cylinder and load reduction method thereof |
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2016
- 2016-05-25 CN CN201610351068.3A patent/CN105836111B/en active Active
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| Publication number | Publication date |
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| CN105836111A (en) | 2016-08-10 |
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