CN114476090A - Pilot ejection protection limiting arm handrail and pilot ejection protection method - Google Patents
Pilot ejection protection limiting arm handrail and pilot ejection protection method Download PDFInfo
- Publication number
- CN114476090A CN114476090A CN202111672773.0A CN202111672773A CN114476090A CN 114476090 A CN114476090 A CN 114476090A CN 202111672773 A CN202111672773 A CN 202111672773A CN 114476090 A CN114476090 A CN 114476090A
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- ejection
- connecting rod
- protection
- shell
- armrest
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 210000000988 bone and bone Anatomy 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 210000001364 upper extremity Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006052 Chinlon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D25/00—Emergency apparatus or devices, not otherwise provided for
- B64D25/08—Ejecting or escaping means
- B64D25/10—Ejector seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0639—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with features for adjustment or converting of seats
- B64D11/0644—Adjustable arm rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0689—Arrangements of seats, or adaptations or details specially adapted for aircraft seats specially adapted for pilots
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Steps, Ramps, And Handrails (AREA)
- Seats For Vehicles (AREA)
Abstract
The application belongs to the field of aviation, and particularly relates to a pilot ejection protection arm limiting handrail and a pilot ejection protection method. According to the pilot ejection protection arm limiting handrail and the pilot ejection protection method, when a passenger needs to adjust the handrail to meet the requirement of comfort, the handrail shell can be rotated to a required angle through the unlocking angle adjusting mechanism, and the angle adjusting mechanism is locked to enable the handrail to be fixed at the adjusted angle. When a passenger starts the ejection of the seat, the protection fan net is released through the ejection actuating mechanism, the arm of the passenger is limited to be extended outwards, and the comfort adjusting function of the normal riding working condition and the arm limiting protection function of the emergency ejection working condition are realized through different actuating modes under different working conditions.
Description
Technical Field
The application belongs to the field of aviation, and particularly relates to a pilot ejection protection arm limiting handrail and a pilot ejection protection method.
Background
In order to avoid the influence of overload and head-on airflow on the pilot during emergency ejection, the upper limbs of the pilot are thrown and injured, and therefore the upper limbs of the pilot need to be restrained and protected. In addition, for a long-endurance aircraft, the comfort requirement of a pilot during long-endurance flight needs to be considered, so that the long-endurance comfort design is needed.
The existing ejection arm limiting mechanism of the seat is only suitable for short-endurance airplanes and does not have a comfort function, and in order to be suitable for long-endurance airplanes and ensure the comfort and ejection safety of pilots, the comfort and safety need to be integrally designed.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide a pilot ejection protection arm limiting handrail and a pilot ejection protection method, so as to solve at least one problem in the prior art.
The technical scheme of the application is as follows:
a first aspect of the present application provides a pilot ejection protection arm rest, comprising:
the armrest shell is arranged on the seat armrest, and a shell cover is arranged on the armrest shell;
the protection fan net is arranged on the handrail shell;
the shell cover locking device comprises a shell cover hoop, a first sliding block, a first connecting rod and a first torsion spring, wherein the shell cover hoop is installed on the shell cover, a through hole is formed in the shell cover hoop, the first sliding block is arranged on the first connecting rod, and one end of the first connecting rod penetrates through the through hole in the shell cover hoop and then is fixed through the first torsion spring;
the angle adjusting mechanism is arranged on the armrest shell and used for unlocking and locking the armrest shell;
an ejection actuating mechanism, which comprises an ejection actuating part and a main body part, wherein,
the ejection actuating part comprises a first rotating shaft, a second connecting rod and a second torsion spring, one end of the second connecting rod is connected with the first rotating shaft, the middle part of the second connecting rod is connected with the other end of the first connecting rod, the middle part of the second connecting rod is fixed through the second torsion spring, and the other end of the second connecting rod is connected with the protection fan net;
the gas burner is characterized in that the main body part is provided with a high-pressure gas channel, a groove is formed in the lower side of the inner wall surface of the gas channel, an outer sleeve is arranged in the groove, a limiting block is arranged on the upper side of the inner wall surface, a spring, a second sliding block and a third connecting rod are arranged in the gas channel, one section of the spring is fixed, the other end of the spring is connected with the second sliding block, the second sliding block is installed at one end of the third connecting rod, and the other end of the third connecting rod is connected with the middle of the second connecting rod.
In at least one embodiment of this application, protection fan net includes many fan bones, many the one end of fan bone is fixed through the second pivot, two adjacent be provided with high-elastic sector between the fan bone.
In at least one embodiment of the present application, the high stretch sector is woven from chinlon tape.
In at least one embodiment of the present application, a limiting block is disposed on the fan ribs for keeping a certain angle between the adjacent fan ribs.
In at least one embodiment of the present application, a flare damper is disposed on the second rotating shaft.
A second aspect of the present application provides a pilot ejection protection method, based on the pilot ejection protection arm-limiting handrail as described above, including:
when the passenger needs to adjust the armrest, the armrest shell is rotated to a preset angle through the unlocking angle adjusting mechanism, and the angle adjusting mechanism is locked, so that the armrest is fixed at the preset angle;
when the passenger starts the seat ejection, the ejection power source is input into the ejection actuating mechanism, the ejection actuating mechanism firstly unlocks the angle adjusting mechanism, the armrest shell rotates to the lower position, the angle adjusting mechanism is locked, then the shell cover locking device is unlocked, the armrest shell is opened, the protection fan net is released, the protection fan net is fully expanded, and the arm of the passenger is limited to extend outwards.
The invention has at least the following beneficial technical effects:
the utility model provides a pilot launches protection limit arm handrail can provide passenger's riding comfort under the normal operating mode of taking, can realize passenger's upper limbs protection restraint function under the emergent operating mode of launching.
Drawings
FIG. 1 is a schematic view of a housing cover locking arrangement for a pilot ejection guard arm armrest according to one embodiment of the present application;
FIG. 2 is a schematic diagram of a first stage of an ejection actuating mechanism for ejecting a protective arm rest from a pilot according to one embodiment of the present application;
FIG. 3 is a schematic diagram of a second stage of the ejection actuating mechanism for the pilot to eject the arm rest of the safety arm in accordance with one embodiment of the present application;
FIG. 4 is a schematic view of a protective fan screen of a pilot ejection protective arm restraint according to one embodiment of the present application;
FIG. 5 is a flow chart of armrest angle adjustment for normal riding conditions of a pilot ejection protection arm-limiting armrest according to an embodiment of the present application;
fig. 6 is a flow chart of the actuation of the arm rest in the emergency ejection condition of the pilot ejection protection arm rest according to one embodiment of the application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
The present application is described in further detail below with reference to fig. 1 to 6.
A first aspect of the present application provides a pilot ejection protection arm rest, comprising: the device comprises a handrail shell, a protective fan net, a shell cover locking device, an angle adjusting mechanism and an ejection actuating mechanism.
Specifically, as shown in fig. 1 to 3, an armrest housing is disposed on the armrest of the seat, a housing cover is disposed on the armrest housing, and a protection fan net is disposed on the armrest housing. The shell cover locking device comprises a shell cover clamp, a first sliding block, a first connecting rod and a first torsion spring, the shell cover clamp is installed on the shell cover, a through hole is formed in the shell cover clamp, the first sliding block is arranged on the first connecting rod, and one end of the first connecting rod is fixed through the first torsion spring after penetrating through the through hole in the shell cover clamp. The angle adjusting mechanism is arranged on the armrest shell and used for unlocking and locking the armrest shell.
Further, the ejection actuating mechanism comprises an ejection actuating part and a main body part, wherein the ejection actuating part comprises a first rotating shaft, a second connecting rod and a second torsion spring, one end of the second connecting rod is connected with the first rotating shaft, the middle part of the second connecting rod is connected with the other end of the first connecting rod, the middle part of the second connecting rod is fixed through the second torsion spring, and the other end of the second connecting rod is connected with the protection fan net; the main part is provided with a high-pressure gas channel, a groove is formed in the lower side of the inner wall surface of the gas channel, an outer sleeve is arranged in the groove, a limiting block is arranged on the upper side of the inner wall surface, a spring, a second sliding block and a third connecting rod are arranged in the gas channel, one section of the spring is fixed, the other end of the spring is connected with the second sliding block, the second sliding block is installed at one end of the third connecting rod, and the other end of the third connecting rod is connected with the middle of the second connecting rod.
According to the pilot ejection protection arm limiting handrail, the upper cover of the handrail shell can be unlocked and opened on one side, and a shell cover locking device, an angle adjusting mechanism and a protection fan net are arranged in the handrail shell.
The cover locking device is schematically shown in fig. 1. The right sliding block moves rightwards under the action of the extension spring to clamp a shell cover hoop of the handrail shell, so that the shell cover of the handrail shell is locked; when the ejection actuating mechanism is actuated, the rotating shaft of the protective fan net overcomes the extension spring and rotates upwards, and meanwhile, the sliding block is driven to move left, so that the shell cover of the handrail shell is unlocked. The shell cover locking device has two unlocking modes, one is unlocked through the armrest shell under the normal riding working condition, and the other is unlocked through the ejection actuating mechanism under the emergency ejection working condition.
The angle adjusting mechanism is used for adjusting the angle of the armrest, and the adjusting range of the armrest angle is about horizontal to be equal to or slightly larger than the angle of the backrest of the seat. The angle adjusting mechanism is a common mechanism for adjusting the armrest of the seat, and is not described in detail herein, and it should be noted that the armrest housing is used for unlocking and locking the angle adjusting mechanism.
The ejector actuator mechanism is illustrated in schematic form in figures 2-3. The working process of the ejection actuating mechanism can be divided into two stages, wherein the first stage enables the seat armrest to be unfolded and protected, and the second stage enables the seat armrest to be retracted, the shell cover on the armrest shell is opened, and the protection fan net is released. In the first stage, as shown in fig. 2, the ejection seat uses high-pressure gas as ejection power, after the gas enters the cylinder, the gas pushes the slider to move right (unlocking of the angle adjusting mechanism and outward unfolding of the armrest), the slider drives the connecting rod (armrest) to be lowered, when the seat is lowered to a fixed position, as shown in fig. 3, the gas changes the path, pushes the slider to move left (locking of the angle adjusting mechanism and axial retraction of the armrest), unlocks the housing cover locking device and pulls the connecting rod to rotate up (actuation of the rotating shaft of the protection fan net, sequential rotation of the fan ribs and opening of the high-elastic fan faces). The gas is kept in the existing direction by the ratchet wheel shown in the figure. The ejection actuating mechanism is a transmission mechanism which converts translation into rotation and is driven by ejection power under the emergency ejection working condition. The ejection actuating mechanism firstly pushes the armrests to extend a certain distance along the lateral direction of the chair (the distance between the two armrests after extending is 2 times longer than that of the small arms of the human body) under the ejection power, then the armrests rotate downwards to a horizontal angle, the armrests extend to retract laterally, and the positions of the armrests are locked. After the position of the handrail is locked, the shell cover locking device is unlocked, the shell cover is opened, and the protection fan net is unfolded from the handrail shell.
The utility model provides a pilot launches protection limit arm handrail, as shown in fig. 4, the protection fan net includes many fan bones, and the one end of many fan bones is fixed through the second pivot, and the pivot can drive the fan bone and rotate upward in proper order, is provided with high-elastic sector between two adjacent fan bones, and high-elastic sector is worked out by the bright and beautiful silk area, can effectively retrain passenger's arm. In this embodiment, the fan ribs are provided with a limiting block for keeping a certain angle between the adjacent fan ribs. Advantageously, in this embodiment, the second rotating shaft is provided with an outward extending damper, the outward extending damper is composed of a spring and a protruding point, when the fan rib is turned upwards, the upward trajectory of the fan rib can be an outward extending arc line, and rubbing against the elbow of the passenger is avoided. The protective fan net is rotated and opened around a shaft under the action of the ejection actuating mechanism, wherein one side of the fan net is fixedly connected with the bottom of the handrail.
A second aspect of the application provides a pilot ejection protection method, which is based on the above pilot ejection protection limiting arm handrail, and comprises the following steps:
when the passenger needs to adjust the armrest, the armrest shell is rotated to a preset angle through the unlocking angle adjusting mechanism, and the angle adjusting mechanism is locked, so that the armrest is fixed at the preset angle;
when the passenger starts the seat ejection, the ejection power source is input into the ejection actuating mechanism, the ejection actuating mechanism firstly unlocks the angle adjusting mechanism, the armrest shell rotates to the lower position, the angle adjusting mechanism is locked, then the shell cover locking device is unlocked, the armrest shell is opened, the protection fan net is released, the protection fan net is fully expanded, and the arm of the passenger is limited to extend outwards.
According to the pilot ejection protection arm limiting handrail and the pilot ejection protection method, when a passenger needs to adjust the handrail to meet the requirement of comfort, the handrail shell can be rotated to a required angle through the unlocking angle adjusting mechanism, and the angle adjusting mechanism is locked to enable the handrail to be fixed at the adjusted angle. Launch as passenger's start-up seat, actuate mechanism release protection fan net through launching, the restriction passenger arm is overhanging, actuates the mode through the difference under the different work condition, realizes normally taking the travelling comfort regulatory function of operating mode to and the limit arm safeguard function of emergent ejection operating mode.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A pilot ejection protection arm limiting handrail is characterized by comprising:
the armrest shell is arranged on the seat armrest, and a shell cover is arranged on the armrest shell;
the protection fan net is arranged on the handrail shell;
the shell cover locking device comprises a shell cover hoop, a first sliding block, a first connecting rod and a first torsion spring, wherein the shell cover hoop is installed on the shell cover, a through hole is formed in the shell cover hoop, the first sliding block is arranged on the first connecting rod, and one end of the first connecting rod penetrates through the through hole in the shell cover hoop and then is fixed through the first torsion spring;
the angle adjusting mechanism is arranged on the armrest shell and used for unlocking and locking the armrest shell;
an ejection actuating mechanism, which comprises an ejection actuating part and a main body part, wherein,
the ejection actuating part comprises a first rotating shaft, a second connecting rod and a second torsion spring, one end of the second connecting rod is connected with the first rotating shaft, the middle part of the second connecting rod is connected with the other end of the first connecting rod, the middle part of the second connecting rod is fixed through the second torsion spring, and the other end of the second connecting rod is connected with the protection fan net;
the gas burner is characterized in that the main body part is provided with a high-pressure gas channel, a groove is formed in the lower side of the inner wall surface of the gas channel, an outer sleeve is arranged in the groove, a limiting block is arranged on the upper side of the inner wall surface, a spring, a second sliding block and a third connecting rod are arranged in the gas channel, one section of the spring is fixed, the other end of the spring is connected with the second sliding block, the second sliding block is installed at one end of the third connecting rod, and the other end of the third connecting rod is connected with the middle of the second connecting rod.
2. The pilot ejection protection arm-limiting handrail as claimed in claim 1, wherein the protection fan net comprises a plurality of fan ribs, one ends of the plurality of fan ribs are fixed through a second rotating shaft, and a high-elastic sector is arranged between two adjacent fan ribs.
3. The pilot ejection protection arm rest of claim 2, wherein the high stretch sector is woven from silk tape.
4. The pilot ejection protection arm-limiting handrail of claim 3, wherein the fan ribs are provided with a limiting block for maintaining a certain angle between adjacent fan ribs.
5. The pilot ejection guard arm rest of claim 4, wherein a flare damper is disposed on the second shaft.
6. A pilot ejection protection method based on the pilot ejection protection arm rest of any one of claims 1 to 5, comprising:
when the passenger needs to adjust the armrest, the armrest shell is rotated to a preset angle through the unlocking angle adjusting mechanism, and the angle adjusting mechanism is locked, so that the armrest is fixed at the preset angle;
when the passenger starts the seat ejection, the ejection power source is input into the ejection actuating mechanism, the ejection actuating mechanism firstly unlocks the angle adjusting mechanism, the armrest shell rotates to the lower position, the angle adjusting mechanism is locked, then the shell cover locking device is unlocked, the armrest shell is opened, the protection fan net is released, the protection fan net is fully expanded, and the arm of the passenger is limited to extend outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672773.0A CN114476090B (en) | 2021-12-31 | 2021-12-31 | Pilot ejection protection arm limiting handrail and pilot ejection protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672773.0A CN114476090B (en) | 2021-12-31 | 2021-12-31 | Pilot ejection protection arm limiting handrail and pilot ejection protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114476090A true CN114476090A (en) | 2022-05-13 |
| CN114476090B CN114476090B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111672773.0A Active CN114476090B (en) | 2021-12-31 | 2021-12-31 | Pilot ejection protection arm limiting handrail and pilot ejection protection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465456A (en) * | 2022-10-11 | 2022-12-13 | 中国航空工业集团公司西安飞机设计研究所 | Ejection seat limit arm protection device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE329091B (en) * | 1969-07-07 | 1970-09-28 | Saab Ab | |
| CN107839890A (en) * | 2017-11-23 | 2018-03-27 | 航宇救生装备有限公司 | A kind of aero seat armrest system |
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2021
- 2021-12-31 CN CN202111672773.0A patent/CN114476090B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465456A (en) * | 2022-10-11 | 2022-12-13 | 中国航空工业集团公司西安飞机设计研究所 | Ejection seat limit arm protection device |
| CN115465456B (en) * | 2022-10-11 | 2024-09-06 | 中国航空工业集团公司西安飞机设计研究所 | Catapulting seat arm limiting protection device |
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| Publication number | Publication date |
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| CN114476090B (en) | 2023-06-23 |
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