CN108674635B - A kind of undercarriage pendant hits energy absorption device - Google Patents
A kind of undercarriage pendant hits energy absorption device Download PDFInfo
- Publication number
- CN108674635B CN108674635B CN201810424650.7A CN201810424650A CN108674635B CN 108674635 B CN108674635 B CN 108674635B CN 201810424650 A CN201810424650 A CN 201810424650A CN 108674635 B CN108674635 B CN 108674635B
- Authority
- CN
- China
- Prior art keywords
- undercarriage
- energy
- pendant
- absorption device
- absorbing tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- 238000005452 bending Methods 0.000 claims abstract description 22
- 239000011358 absorbing material Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 239000004033 plastic Substances 0.000 abstract description 8
- 210000001503 joint Anatomy 0.000 description 17
- 210000002414 leg Anatomy 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 210000000544 articulatio talocruralis Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/04—Arrangement or disposition on aircraft
-
- 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
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D45/04—Landing aids; Safety measures to prevent collision with earth's surface
- B64D45/06—Landing aids; Safety measures to prevent collision with earth's surface mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The present invention relates to field of airplane structure, in particular to a kind of undercarriage pendant hits energy absorption device, comprising: metal energy absorbing tube (1), porous energy-absorbing material (2), limit guide rod (3), bending resistance ring structure (4), overload cut structure (5) and mechanical joints.The present invention guides metal energy absorbing tube (1) and porous energy-absorbing material (2) axially compressed plastic deformation by setting limit guide rod (3) in metal energy absorbing tube (1) and bending resistance ring structure (4), its bending deformation is limited, to fully absorb impact energy.Undercarriage of the present invention pendant hits that energy absorption device structure is simple, light weight and cost is low, controlled process compressive plastic deformation energy-absorbing double action is hit with the load-bearing of normally landing structure and pendant, furthermore the structure has broad applicability, it is matched by mechanical connecting structure, can be applied to a variety of undercarriage forms such as skid landing gear, machine wheel undercarriage and leg formula undercarriage.
Description
Technical field
The present invention relates to field of airplane structure, in particular to a kind of undercarriage pendant hits energy absorption device.
Background technique
Undercarriage is an important component of vertically taking off and landing flyer, and main function is in vertically taking off and landing flyer
Ground parks and plays a supporting role when sliding, while also playing the role of absorbing landing shock energy in landing mission.At present
The undercarriage form that VTOL aircraft generally uses includes ski type and two kinds of wheel formula.
Skid landing gear is welded by more metal tubes according to certain shapes, its advantage is that structure it is simple, it is light-weight,
It is at low cost, but metal tube plasticity energy-absorbing is insufficient during emergency pendant is hit, be unfavorable for reducing pendant hit overload, improve airframe structure and
Member security's property；Machine wheel undercarriage is made of oil gas bumper and inflated rubber tire component, oil gas bumper and rubber wheel
Mould has preferable cushion performance, can effectively reduce landing shock load, but the disadvantage is that structure is complicated, weight is big, manufacturing cost
It is high.
Summary of the invention
The object of the present invention is to provide a kind of undercarriage pendants to hit energy absorption device, makes undercarriage more lightweight, has carrying
Ability hits the ability of the axially controlled compressive plastic deformation energy-absorbing of process but also with emergency pendant.
The technical scheme is that
A kind of undercarriage pendant hits energy absorption device, comprising:
Metal energy absorbing tube；
Guide rod is limited, the limit guide rod is axially arranged on the inside of the metal energy absorbing tube；
Bending resistance ring structure, the bending resistance ring structure is arranged radially on the inner wall of the metal energy absorbing tube, and institute
It states bending resistance ring structure and is fixedly connected with the limit guide rod by overload cutting structure；
It is filled in the cavity that the inside of the metal energy absorbing tube is formed with the limit guide rod, the bending resistance ring structure
Porous energy-absorbing material；
Mechanical joints are mounted on the outside of the metal energy absorbing tube.
Optionally, porous energy-absorbing material is foamed aluminium or honeycomb aluminum.
Optionally, it is to cut bolt, cut pin shaft or cut gasket that the overload, which cuts structure,.
Optionally, the mechanical joints include the first mechanical joints, the second mechanical joints and third
Mechanical joints, wherein
First mechanical joints are mounted on the outer upper end of the metal energy absorbing tube；
Second mechanical joints are mounted on the outer middle side part of the metal energy absorbing tube；
The third mechanical joints are mounted on the outside lower end of the metal energy absorbing tube.
Invention effect:
Undercarriage pendant of the invention hits energy absorption device, using the light-weight design side for filling porous energy-absorbing material in metal tube
Formula, and metal spacing guide rod and bending resistance ring structure are used, guide metal energy absorbing tube and the axially compressed modeling of porous energy-absorbing material
Property deformation, limit its bending deformation, to fully absorb impact energy, the device have normally landing process structure load-bearing and pendant
The controlled compression plastic deformation and energy-absorbing double action of process is hit, structure is simple, light weight and cost is low, there is wide applicability,
By designing matched mechanical connecting structure, it is more to can be applied to skid landing gear, machine wheel undercarriage and leg formula undercarriage etc.
Kind undercarriage form.
Detailed description of the invention
Fig. 1 is the sectional view that undercarriage pendant of the invention hits energy absorption device；
Fig. 2 is that undercarriage pendant of the invention hits the schematic diagram that energy absorption device is installed on skid landing gear；
Fig. 3 is that undercarriage pendant of the invention hits the schematic diagram that energy absorption device is installed on machine wheel undercarriage；
Fig. 4 is that undercarriage pendant of the invention hits the signal that energy absorption device is installed on leg formula undercarriage.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label indicate same or similar element or element with the same or similar functions.Described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.Under
Face is described in detail the embodiment of the present invention in conjunction with attached drawing.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention
The limitation of range.
It 1 to Fig. 4 energy absorption device is hit to undercarriage pendant of the invention is described in further details with reference to the accompanying drawing.
The present invention provides a kind of undercarriage pendant hit energy absorption device, may include metal energy absorbing tube 1, porous energy-absorbing material 2,
It limits guide rod 3, bending resistance ring structure 4, overload and cuts structure 5 and mechanical joints.
Specifically, limit guide rod 3 is axially arranged on the inside of metal energy absorbing tube 1；Bending resistance ring structure 4 is disposed radially
It on the inner wall of metal energy absorbing tube 1, is bonded with the inner cylinder of the metal energy absorbing tube, and bending resistance ring structure 4 and limit guide rod 3
Structure 5 is cut by overload to be fixedly connected；The sky that the inside of metal energy absorbing tube 1 and limit guide rod 3, bending resistance ring structure 4 are formed
Porous energy-absorbing material 2 is filled in chamber；Mechanical joints are mounted on the outside of metal energy absorbing tube 1, hit for undercarriage pendant
The connection of energy absorption device and fuselage ring or other landing gear structures.In the present embodiment, the porous energy-absorbing material 2 of filling be can be
But it is not limited to foamed aluminium or honeycomb material；Overload cuts structure 5 and can be but not limited to cut bolt, cut pin shaft or cutting
Gasket, the cutting magnitude of load that overload cuts structure 5 need to hit endergonic structure collective effect by design and verification experimental verification, multiple pendants
When, all overloads cut 8~10 times that the design bearing capacity summation of structure 5 is self-possessed for fuselage, to guarantee that it is normal that load meets
Landing conditions are not destroyed, and meet the requirement cut in the case of pendant is hit.Further, it in the present embodiment, preferably connects
Mouth includes the first mechanical joints 6, the second mechanical joints 7 and third mechanical joints 8, wherein first is mechanical
Connecting interface 6 is mounted on the outer upper end of metal energy absorbing tube 1；Second mechanical joints 7 are mounted on the outside of metal energy absorbing tube 1
Middle part；Third mechanical joints 8 are mounted on the outside lower end of metal energy absorbing tube 1.
Advantageously, undercarriage pendant of the invention is hit in energy absorption device, using metal spacing guide rod 3 and bending resistance ring structure
4 guidance metal energy absorbing tubes 1 and the axially compressed plastic deformation of porous energy-absorbing material 2, limit its bending deformation, to fully absorb punching
Hit energy.
Advantageously, undercarriage pendant of the invention is hit in energy absorption device, the material of metal energy absorbing tube 1, length, diameter, and
Porosity, the material of porous energy-absorbing material 2 are filled in inside, and it is true by design can to hit energy-absorbing requirement according to fuselage self weight and pendant
It is fixed.
As shown in Fig. 2, undercarriage pendant of the invention hits energy absorption device and is mountable on skid landing gear, pendant hits energy-absorbing dress
The vertical bar instead of skid landing gear is set, undercarriage pendant hits energy absorption device and passes through the first mechanical joints 6 and underbelly
Frame 11 is connected, and is connected by third mechanical joints 8 with undercarriage whippletree 13；Unilateral sled installation is no less than risen and fallen for two
Frame pendant hits energy absorption device, and undercarriage pendant in two sides hits energy absorption device and is symmetrically installed, and lateral support bar 12 is connect in succession by the second machinery
Mouth 7 hits energy absorption device with undercarriage pendant and is connected, to further increase the counter-bending deformability of metal energy absorbing tube 1.
When helicopter normally landing, undercarriage pendant hits energy absorption device and uses as support construction, the structure weight of helicopter
Amount and low velocity land the summation for generating impact force lower than the utmost carrying ability of overload clipping apparatus 5, and metal energy absorbing tube 1 and inside are filled out
The porous energy-absorbing material 2 filled will not be plastically deformed；When generation pendant hits accident, helicopter high-speed impact ground generates very big
Shock loading overloads 5 failure by shear of clipping apparatus, excitation undercarriage pendant when load is more than overload 5 utmost carrying ability of clipping apparatus
It hits energy absorption device and generates controlled axial plastic deformation, limit guide rod 3 and bending resistance ring structure 4 guarantees that axis only occurs for the energy absorption device
Impact kinetic energy is fully absorbed without bending deformation to compressive deformation, protects the personal safety of airframe structure and occupant.
As shown in figure 3, undercarriage pendant of the invention hits energy absorption device and is mountable on machine wheel undercarriage, undercarriage pendant is hit
Energy absorption device top is connected with helicopter lower frame 21, and undercarriage pendant hits energy absorption device lower part and is connected with wheel 22.Helicopter
Normally landing and emergency pendant are hit under landing state, and the working principle that pendant hits energy absorption device is identical as the embodiment of Fig. 2, herein no longer
It repeats.
As shown in figure 4, undercarriage pendant of the invention hits energy absorption device and is mountable on leg formula undercarriage, undercarriage pendant hits suction
Can device replacement leg formula undercarriage tibia, top is connected by knee joint 33 with meropodium 32, lower part by ankle-joint 34 with it is sufficient
Portion 35 is connected.
When aircraft normally landing, undercarriage pendant hits energy absorption device as rigidity supporting structure, carries fuselage weight.?
Emergency pendant hits process, and leg formula undercarriage reasonably adjusts the corner of hip joint 31, knee joint 33 and ankle-joint 34, guarantees undercarriage pendant
It hits energy absorption device and keeps vertical state, and lock each joint, be subjected only to compressive load not to guarantee that undercarriage pendant hits energy absorption device
Moment of flexure is born, so that undercarriage pendant is hit energy absorption device excitation is compressive plastic deformation mode, fully absorbs the kinetic energy that pendant hits process, drop
The overload that low impact process generates guarantees airframe structure and occupant safety.
In conclusion undercarriage pendant of the invention hits energy absorption device with broad applicability, it can be applied to ski type and rise and fall
A variety of undercarriage forms such as frame, machine wheel undercarriage and leg formula undercarriage.It is both carrying that the pendant that the present invention designs, which hits energy absorption device,
Structure is endergonic structure again, and in normally landing process, pendant hits energy absorption device with enough stiffness and strength, to carry fuselage weight
Amount；Process is hit in pendant, High Loading Rate is more than structural bearing threshold value, and pendant hits energy absorption device along axially controlled plastic deformation, with
It fully absorbs pendant and hits kinetic energy, reduce fuselage overload.It is low that pendant designed by the present invention hits energy absorption device light weight and cost.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with the scope of protection of the claims
It is quasi-.
Claims (3)
1. a kind of undercarriage pendant hits energy absorption device characterized by comprising
Metal energy absorbing tube (1)；
It limits guide rod (3), limit guide rod (3) is axially arranged on the inside of the metal energy absorbing tube (1)；
Bending resistance ring structure (4), the bending resistance ring structure (4) are arranged radially on the inner wall of the metal energy absorbing tube (1),
And the bending resistance ring structure (4) is cut structure (5) by overload with the limit guide rod (3) and is fixedly connected, the overload is cut
Disconnected structure (5) are to cut bolt, cut pin shaft or cut gasket；
In the cavity that the inside of the metal energy absorbing tube (1) and limit guide rod (3), the bending resistance ring structure (4) are formed
Filled with porous energy-absorbing material (2)；
Mechanical joints are mounted on the outside of the metal energy absorbing tube (1).
2. undercarriage pendant according to claim 1 hits energy absorption device, which is characterized in that porous energy-absorbing material (2) is foam
Aluminium or honeycomb aluminum.
3. undercarriage according to claim 1 pendant hits energy absorption device, which is characterized in that the mechanical joints include the
One mechanical joints (6), the second mechanical joints (7) and third mechanical joints (8), wherein
First mechanical joints (6) are mounted on the outer upper end of the metal energy absorbing tube (1)；
Second mechanical joints (7) are mounted on the outer middle side part of the metal energy absorbing tube (1)；
The third mechanical joints (8) are mounted on the outside lower end of the metal energy absorbing tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424650.7A CN108674635B (en) | 2018-05-07 | 2018-05-07 | A kind of undercarriage pendant hits energy absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810424650.7A CN108674635B (en) | 2018-05-07 | 2018-05-07 | A kind of undercarriage pendant hits energy absorption device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108674635A CN108674635A (en) | 2018-10-19 |
| CN108674635B true CN108674635B (en) | 2019-06-28 |
Family
ID=63802783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810424650.7A Active CN108674635B (en) | 2018-05-07 | 2018-05-07 | A kind of undercarriage pendant hits energy absorption device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108674635B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469789B (en) * | 2020-04-30 | 2023-06-23 | 中国飞机强度研究所 | Combined collision energy absorption structure and application method thereof |
| CN114016613A (en) * | 2021-11-16 | 2022-02-08 | 西安长峰机电研究所 | High-bearing composite structure light skid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644688A (en) * | 2012-04-24 | 2012-08-22 | 北京航空航天大学 | Landing mechanism-based legged mechanical cushioning device |
| CN104527555A (en) * | 2015-01-06 | 2015-04-22 | 华侨大学 | Collision energy absorbing device with various energy absorbing forms and application thereof |
| CN206719530U (en) * | 2017-07-19 | 2017-12-08 | 中国空空导弹研究院 | A kind of support bar and the undercarriage and aircraft using the support bar |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172824B (en) * | 2015-08-04 | 2018-06-22 | 深圳市乾行达科技有限公司 | A kind of metal tube-honeycomb core integral type anticreeper |
| CN107512281B (en) * | 2017-07-11 | 2019-03-22 | 中车青岛四方机车车辆股份有限公司 | Energy-absorbing anti-creeper and rail vehicle with it |
-
2018
- 2018-05-07 CN CN201810424650.7A patent/CN108674635B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644688A (en) * | 2012-04-24 | 2012-08-22 | 北京航空航天大学 | Landing mechanism-based legged mechanical cushioning device |
| CN104527555A (en) * | 2015-01-06 | 2015-04-22 | 华侨大学 | Collision energy absorbing device with various energy absorbing forms and application thereof |
| CN206719530U (en) * | 2017-07-19 | 2017-12-08 | 中国空空导弹研究院 | A kind of support bar and the undercarriage and aircraft using the support bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108674635A (en) | 2018-10-19 |
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