CN106628130B - A kind of unmanned plane nose-gear damping steering mechanism - Google Patents
A kind of unmanned plane nose-gear damping steering mechanism Download PDFInfo
- Publication number
- CN106628130B CN106628130B CN201611216931.0A CN201611216931A CN106628130B CN 106628130 B CN106628130 B CN 106628130B CN 201611216931 A CN201611216931 A CN 201611216931A CN 106628130 B CN106628130 B CN 106628130B
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- CN
- China
- Prior art keywords
- undercarriage
- pin shaft
- mounting base
- steering
- unmanned plane
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/50—Steerable undercarriages; Shimmy-damping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/58—Arrangements or adaptations of shock-absorbers or springs
- B64C25/62—Spring shock-absorbers; Springs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention belongs to unmanned plane nose-gear structure/mechanism design fields, it is related to a kind of nose-gear of suitable small and medium size unmanned aerial vehicles, including undercarriage pitman arm (1), pin shaft (2), mounting base (3), undercarriage damper leg (4), compressed spring (5), purpose is the force-transfer characteristic for improving existing unmanned plane nose-gear steering and damping, reduces constitutional detail quantity and weight.The present invention realizes 2 freedom degrees of steering and buffering by circumferential groove and axial groove and pin shaft simultaneously, and number of parts greatly reduces, reduces the complexity and manufacturing cost of landing gear structure, improve reliability.Since undercarriage leg and installation sleeve have maximum length of fit at any time, lateral rigidity is good, and part stress is good.
Description
Technical field
The invention belongs to unmanned plane nose-gear structure/mechanism design field, it is related to a kind of suitable small and medium size unmanned aerial vehicles
Nose-gear.
Background technique
The nose-gear requirement of unmanned plane is light-weight, and the rigidity of structure is good, and has turning function and good damping performance.
General unmanned plane nose-gear has independent steering mechanism and damping, and the two is connected to form practical structures, led
Frame is fallen in elongation state, the fit dimension between undercarriage leg and sleeve is short, and transmission force property is poor, and weight and size is big, laterally
Rigidity is low.Lateral bending deformation under the action of being easy in landing in lateral load, or cause fuselage to roll in sliding run.
Summary of the invention
The object of the present invention is to provide a kind of unmanned plane nose-gear damping steering mechanism, are risen and fallen with meeting all kinds of unmanned planes
The needs of frame development.
The technical scheme is that
A kind of unmanned plane nose-gear damping steering mechanism, which is characterized in that including undercarriage pitman arm 1, pin shaft 2,
Mounting base 3, undercarriage damper leg 4, compressed spring 5, wherein undercarriage pitman arm 1, mounting base 3, undercarriage damper leg
4 threes are installed together by pin shaft 2, and pin shaft 2 sequentially passes through circular hole on undercarriage pitman arm 1, mounting base 3 from outside to inside
On circumferential slot, the axial groove on undercarriage damper leg 4, pin shaft 2 can by both ends install shaft block ring prevent from,
Compressed spring 5 is housed between mounting base 3 and undercarriage damper leg 4, buffering, mounting base 3 are provided when undercarriage is impacted
It is fixedly mounted on housing construction by flange, undercarriage pitman arm 1 is connected with steering-engine, transmits steering moment.
When steering-engine driving undercarriage pitman arm 1 rotates, dynamic undercarriage pitman arm 1 is driven by pin shaft 2
Frame damper leg 4 is fallen to rotate around pillar axes.Divertical motion is not interfere with each other with kicking motion.
Circumferential slot terminal position in mounting base 3 provides the limit spacing of front-wheel steer.On undercarriage damper leg 4
Axial groove terminal position determines the state that undercarriage freely extends and maximum cushioning stroke.
The invention has the advantages that
The present invention permeates steering mechanism and damping mechanism, greatly reduces number of parts and construction weight.
It is in-house without any fastener.Contact distance between undercarriage leg and sleeve, so that transmission force property is good.It has both simultaneously
Turn to the function with damping.Since number of parts is few, manufacturing cost is low, high reliablity.Simultaneously because the mechanism non-bolt, rivet
Equal fasteners and bearing, it is easy for installation.
Detailed description of the invention
Fig. 1 is structural schematic diagram after assembly of the invention.
Fig. 2 is structural blast schematic diagram of the invention.
Wherein, undercarriage pitman arm 1, pin shaft 2, mounting base 3, undercarriage damper leg 4, compressed spring 5.
Specific embodiment
It elaborates below to the present invention.
Undercarriage in the present invention contains wheel, pin shaft by undercarriage pitman arm 1, mounting base 3, undercarriage damper leg 4
2, compressed spring 5 is assembled together.Pin shaft 2 sequentially passes through circular hole on undercarriage pitman arm 1, in mounting base 3 from outside to inside
Circumferential slot, the axial groove on undercarriage damper leg 4.Pin shaft 2 can prevent from by installing shaft block ring at both ends.Pacifying
It fills and compressed spring 5 is housed between seat 3 and undercarriage damper leg 4, buffering is provided when undercarriage is impacted.
When undercarriage stress is compressed, undercarriage damper leg 4 is moved upwards, and pin shaft 2 is in undercarriage damper leg 4
Axial groove in move relatively downward, but since the limitation of undercarriage pitman arm 1 and pin shaft 2 can't generate rotation.It is setting
When counting the length of the axial groove, it is subject to undercarriage buffer distance, while to guarantee maximum when designing the parameter of compressed spring 5
Spring is not compacted under compression travel.
When designing spring parameter, there are enough pretightning forces after should ensure that installation.When the pretightning force should be at least more than shutting down
The dead load of nose-gear, to prevent undesirable negative ground angle.
When steering-engine driving undercarriage pitman arm 1 rotates, dynamic undercarriage pitman arm 1 is driven by pin shaft 2
Frame damper leg 4 is fallen to rotate around pillar axes.Pin shaft 2 slides in the circumferential slot of mounting base 3.In the center of circle for designing the circumferential slot
When angular region, the residual intensity of the range and mounting base 3 of Nose Wheel Steering angle at this should be comprehensively considered.
Axial groove in undercarriage damper leg 4 and the circumferential groove width of mounting base 3 should be formed with the diameter of pin shaft 2 it is small between
Gap cooperation, and groove edge should guarantee straightness and flatness as far as possible, to guarantee that rotation is flexible.It can smear and lubricate in sliding position
Rouge is to reduce force of sliding friction.
Claims (1)
1. a kind of unmanned plane nose-gear damping steering mechanism, which is characterized in that including undercarriage pitman arm (1), pin shaft
(2), mounting base (3), undercarriage damper leg (4), compressed spring (5), wherein undercarriage pitman arm (1), mounting base (3),
Undercarriage damper leg (4) three is installed together by pin shaft (2), and pin shaft (2) sequentially passes through undercarriage steering from outside to inside
Circular hole on rocker arm (1), the circumferential slot in mounting base (3), the axial groove on undercarriage damper leg (4), pin shaft (2) can pass through
At both ends, installation shaft block ring prevents from, and compressed spring (5) are housed between mounting base (3) and undercarriage damper leg (4),
Buffering is provided when undercarriage is impacted, mounting base (3) is fixedly mounted on housing construction, undercarriage pitman arm by flange
(1) it is connected with steering-engine, transmits steering moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216931.0A CN106628130B (en) | 2016-12-26 | 2016-12-26 | A kind of unmanned plane nose-gear damping steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611216931.0A CN106628130B (en) | 2016-12-26 | 2016-12-26 | A kind of unmanned plane nose-gear damping steering mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106628130A CN106628130A (en) | 2017-05-10 |
| CN106628130B true CN106628130B (en) | 2019-03-19 |
Family
ID=58827960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611216931.0A Active CN106628130B (en) | 2016-12-26 | 2016-12-26 | A kind of unmanned plane nose-gear damping steering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106628130B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109835472A (en) * | 2019-03-22 | 2019-06-04 | 西北工业大学 | A kind of small drone column support type spring nose-gear |
| CN112722324B (en) * | 2021-01-19 | 2022-12-20 | 浙江吉利控股集团有限公司 | Vertical take-off and landing electric aircraft test platform |
| CN113734428B (en) * | 2021-08-30 | 2023-05-26 | 北京航空航天大学 | Simple skid type rear landing gear for solar unmanned aerial vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB421223A (en) * | 1933-06-20 | 1934-12-17 | George Herbert Dowty | Improvements relating to tail wheels for aircraft |
| GB533111A (en) * | 1939-10-09 | 1941-02-06 | Gen Aircraft Ltd | Improvements in aircraft landing gear |
| CN103523212A (en) * | 2012-07-06 | 2014-01-22 | 哈尔滨飞机工业集团有限责任公司 | Nose landing gear of aircraft |
| CN103057693A (en) * | 2012-12-25 | 2013-04-24 | 天津三爻航空航天科技发展有限公司 | Fixed wing aircraft tail wheel steering apparatus |
| CN104192303B (en) * | 2014-09-15 | 2016-06-22 | 沈阳飞机工业（集团）有限公司 | SUAV nose-gear |
| CN204399469U (en) * | 2014-12-04 | 2015-06-17 | 天津全华时代航天科技发展有限公司 | A kind of unmanned plane alighting gear |
| CN205076034U (en) * | 2015-10-16 | 2016-03-09 | 河南翱翔航空科技有限公司 | Unmanned aerial vehicle nose -gear |
-
2016
- 2016-12-26 CN CN201611216931.0A patent/CN106628130B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106628130A (en) | 2017-05-10 |
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