CN108001670A - Plane-parallel type aircraft main landing gear - Google Patents
Plane-parallel type aircraft main landing gear Download PDFInfo
- Publication number
- CN108001670A CN108001670A CN201711165616.4A CN201711165616A CN108001670A CN 108001670 A CN108001670 A CN 108001670A CN 201711165616 A CN201711165616 A CN 201711165616A CN 108001670 A CN108001670 A CN 108001670A
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- Prior art keywords
- main
- hole
- auxiliary
- swing rod
- cylinder
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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
-
- 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
- B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A kind of plane-parallel type aircraft main landing gear, it includes engine base, dynamic platform, connecting rod, main swing rod, auxiliary swing rod, slim slide block, short sliding block, two wheel groups and screw driver, wherein long and short sliding block couples with engine base prismatic pair；Connecting rod, main and auxiliary swing rod is equipped with to be coupled apart from two identical parallel holes, the holes of connecting rod with short sliding block and dynamic platform revolute pair, and the holes of main and auxiliary swing rod couples with slim slide block and dynamic platform revolute pair respectively；Wheel group includes wheel, cylinder, spring, frame set, and wheel is rotated with cylinder to be coupled, and cylinder and spring are located at frame set endoporus, and spring is against cylinder boss and frame set inner top, and the frame set of two wheel groups is connected with main swing rod and connecting rod respectively.Screw driver drives long and short sliding block to be moved along the main and auxiliary track of engine base is mutually opposing, is swung and risen and fallen by connecting rod, main and auxiliary swing rod and dynamic platform driven wheel group.The configuration of the present invention is simple, wheel group stress buffer, and amplitude of fluctuation is big, shrink compact.
Description
Technical field
The invention belongs to field of airplane design, more particularly to a kind of undercarriage.
Background technology
Aircraft main landing gear is the important load bearing component of aircraft, is responsible for during aircraft safety landing of crucial importance
Mission.In addition to the aircraft for supporting ground, it is primarily subjected to various shock loadings of the aircraft during landing.Due to flying
Shock loading that owner's undercarriage is born is big, working environment is severe, causes its failure rate higher.Therefore, security reliability and
Bearing capacity is two important indicators of undercarriage design.Traditional undercarriage is a main shaft by quadric chain
Support, driving device drive the connecting rod hinged wherein with fuselage, realize the draw-in and draw-off function of undercarriage.Put down completely in undercarriage
When, two connecting rods are conllinear in double leval jib, realize that undercarriage posture keeps function with this, the load that undercarriage is subject to is then mainly by leading
Supports main shaft structure undertakes.Therefore either for quadric chain once failing or overloading, undercarriage just can not be normal for driving device
Work even fractures.In order to reduce the failure rate of undercarriage, 2011 to 2016, Messier-Dowty, Inc. of the U.S. existed
The U.S. and China apply for a collection of invention granted patent at the same time, and the patent of invention of Publication No. CN102405358B is disclosed equipped with can
The undercarriage of the load transfer device of choosing, the patent of invention of Publication No. CN102905973B disclose rocking arm and deformable parallel four side
Shape type undercarriage, the patent of invention of Publication No. CN103596841B disclose undercarriage.It follows that with rising and falling
The relevant core patent of frame is grasped by overseas enterprise substantially, and the independent innovational design of China's undercarriage is deficienter.North in 2013
Patent of invention of the capital aerospace university in Publication No. CN101879943B discloses a kind of small-size retractable multi-wheel and multi-support
Formula undercarriage.The patent of invention of the Publication No. CN101850844B of Nanjing Aero-Space University in 2013 discloses a kind of aircraft
Undercarriage.Undercarriage involved by these patents belongs to the evolution of traditional quadric chain a bit, can not thoroughly solve tradition
It is insufficient existing for undercarriage.The patent of invention of the Publication No. CN 103895858B of Tsinghua University in 2014 discloses newly
Type high intensity and high reliability undercarriage, including there is 4-RRR Planar Mechanisms parallel institution, the cam lock of linear guiding
Locking mechanism and space four-links driving mechanism, realize carrying and guiding, postures is kept and driving function respectively.But structure and driving
System complex, control difficulty are big.Aircraft main landing gear is that horizontal swing is packed up at present, it swings inertia has shadow to airplane motion
Ring, swinging laterally the main landing gear packed up needs airframe to provide larger parking space.
The content of the invention
It is an object of the invention to provide one kind is simple in structure, easy to control, support stiffness is high, intensity is big, contraction is compact, drop
Fall the good plane-parallel type aircraft main landing gear of resiliency.
The present invention includes engine base, dynamic platform, connecting rod, main swing rod, auxiliary swing rod, slim slide block, short sliding block, two wheel groups and spiral drive
Dynamic device, the wherein rectangular plate shape of engine base, its middle part are equipped with the main orbit of its parallel long side and teach rail, its two short side is equipped with
Boss, the boss are equipped with parallel main through hole corresponding with main and auxiliary guide rail and auxiliary through hole；The screw driver includes motor, master
Leading screw, auxiliary leading screw, master gear, auxiliary gear, wherein motor are located at one end of engine base, and are connected with engine base one end, main and auxiliary leading screw
One end after the coaxial key connection of main and auxiliary gear with the main and auxiliary through hole revolute pair of engine base side short side boss respectively with coupling again, main tooth
Wheel is engaged with auxiliary gear, after the other end of main and auxiliary leading screw couples with the main and auxiliary through hole revolute pair of engine base opposite side short side boss,
Main leading screw again with the coaxial key connection of motor shaft；It is parallel with two of orthogonal tapped through hole logical that the slim slide block is equipped with tapped through hole
Hole, the short sliding block are equipped with the through hole of tapped through hole and orthogonal tapped through hole, and the tapped through hole of slim slide block joins with main threads of lead screw
Connect, the tapped through hole of short sliding block couples with auxiliary threads of lead screw；The main and auxiliary guide rail of engine base supports long and short sliding block to slide respectively；It is described
Dynamic platform is equipped with three through holes being parallel to each other, wherein the distance of two adjacent through-holes and the distance of two through holes of above-mentioned slim slide block
It is identical；It is parallel logical that one end of the connecting rod and auxiliary swing rod and the both ends at middle part and main swing rod are equipped with pitch-row identical two
Hole；The through hole of main and auxiliary swing rod one end couples with two through hole revolute pairs of slim slide block respectively, in the main swing rod other end and auxiliary swing rod
The through hole in portion couples with two adjacent through-holes revolute pairs of dynamic platform respectively, forms parallelogram linkage；Connecting rod one end
Through hole couples with the through hole revolute pair of short sliding block, and the through hole in the middle part of the connecting rod couples with the remaining through hole revolute pair of dynamic platform；It is described
Wheel group includes wheel, cylinder, frame set, spring, and wherein cylinder one end is equipped with the through hole of orthogonal cylinder, and middle part is equipped with cylinder boss,
Frame set both ends are equipped with coaxial through-hole, and wheel is rotated with cylindrical hole to be coupled, and cylinder covers the coaxial through-hole at both ends through frame, and cylinder is convex
Platform is located at the bottom in frame set cavity, and for spring pocket on the cylinder in cavity bore, both ends of the spring is against cylinder boss and frame respectively
Cover in top inner wall, the frame set of two wheel groups is connected with main swing rod and connecting rod respectively.
The present invention has the following advantages compared with prior art：
1st, it is simple in structure by its spiral self-locking functional localization only with a set of mechanical screw actuators being connected with fuselage, easily
Control.
2nd, using plane mechanism support wheel group in parallel, support stiffness is high, and intensity is big, is adapted to big aircraft takeoffs and landings.
3rd, plane mechanism in parallel and wheel group spring coordinative role, effectively slow down wheel contact ground impact force.
4th, undercarriage is shunk compact, and required parking space is small.
5th, undercarriage with heading plane in significantly rise and fall, its motion inertia force on aircraft influence it is small.
Brief description of the drawings
Fig. 1 is the front sectional view of the present invention.
Fig. 2 is contraction state simplified schematic diagram of the present invention.
In figure：1- engine bases, 2- move platform, 3- connecting rods, the main swing rods of 4-, the auxiliary swing rods of 5-, 6- slim slide blocks, the short sliding blocks of 7-, 8-1- electricity
The main leading screw of machine, 8-2-, the auxiliary leading screws of 8-3-, 8-4- master gears, the auxiliary gears of 8-5-, 9-1- wheels, 9-2- cylinders, 9-3- framves set, 9-4
Spring.
Embodiment
In the plane-parallel type aircraft main landing gear schematic diagram shown in Fig. 1 and Fig. 2,1 rectangular plate shape of engine base, its middle part
Main guide rail and guidance rail, its two short side equipped with its parallel long side are equipped with boss, which is equipped with corresponding with main and auxiliary guide rail flat
Capable main through hole and auxiliary through hole；Motor 8-1 in screw driver is located at one end of engine base, and is connected with engine base, main leading screw 8-2
With one end of auxiliary leading screw 8-3 respectively with after master gear 8-4 and the auxiliary coaxial key connections of gear 8-5 again with engine base side short side boss
Main and auxiliary through hole revolute pair connection, master gear are engaged with auxiliary gear, the other end and the engine base opposite side short side boss of main and auxiliary leading screw
Main and auxiliary through hole revolute pair connection after, main leading screw again with the coaxial key connection of motor shaft；Slim slide block 6 is equipped with tapped through hole and orthogonal
Two parallel via holes of tapped through hole, short sliding block 7 are equipped with the through hole of tapped through hole and orthogonal tapped through hole, and the screw thread of slim slide block leads to
Kong Yuzhu threads of lead screw couples, and the tapped through hole of short sliding block couples with auxiliary threads of lead screw；The main and auxiliary guide rail of engine base supports respectively
Long and short sliding block slides；Dynamic platform 2 is equipped with three through holes being parallel to each other, wherein the distance of two adjacent through-holes and above-mentioned slim slide block
Two through holes distance it is identical；The both ends at one end of connecting rod 3 and auxiliary swing rod 5 and middle part and main swing rod 4 are equipped with pitch-row phase
Two same parallel via holes；The through hole of main and auxiliary swing rod one end couples with two through hole revolute pairs of slim slide block respectively, main swing rod
Through hole in the middle part of the other end and auxiliary swing rod couples with two adjacent through-holes revolute pairs of dynamic platform respectively, forms parallelogram connection-rod
Mechanism；The through hole of connecting rod one end couples with the through hole revolute pair of short sliding block, the through hole in the middle part of the connecting rod and the remaining through hole of dynamic platform
Revolute pair couples；Cylinder 9-2 one end in two wheel groups is equipped with the through hole of orthogonal cylinder, and middle part is equipped with cylinder boss, frame set 9-3
Both ends are equipped with coaxial through-hole, and wheel 9-1 is rotated with cylindrical hole to be coupled, and cylinder covers the coaxial through-hole at both ends through frame, and cylinder is convex
Platform is located at the bottom in frame set cavity, and spring 9-4 is sleeved on the cylinder in cavity bore, both ends of the spring be against respectively cylinder boss and
In frame set top inner wall, the frame set of two wheel groups is connected with main swing rod and connecting rod respectively.
Motor drives long and short sliding block mutually reciprocal along the main and auxiliary track of engine base by main leading screw, master gear, auxiliary gear, auxiliary leading screw
Swing and rise and fall to movement, then by connecting rod, main and auxiliary swing rod and dynamic platform driven wheel group.
Claims (1)
1. a kind of plane-parallel type aircraft main landing gear, it includes engine base, dynamic platform, connecting rod, main swing rod, auxiliary swing rod, slim slide block, short cunning
Block, two wheel groups and screw driver, it is characterised in that：The rectangular plate shape of engine base, its middle part are equipped with its parallel long side
Main orbit and teach rail, its two short side is equipped with boss, which is equipped with parallel main through hole corresponding with main and auxiliary guide rail and auxiliary
Through hole；The screw driver includes motor, main leading screw, auxiliary leading screw, master gear, auxiliary gear, and wherein motor is located at the one of engine base
End, and is connected with engine base one end, one end of main and auxiliary leading screw respectively with it is again short with engine base side after the coaxial key connection of main and auxiliary gear
The main and auxiliary through hole revolute pair connection of side boss, master gear are engaged with auxiliary gear, the other end and the engine base opposite side of main and auxiliary leading screw
Short side boss main and auxiliary through hole revolute pair connection after, main leading screw again with the coaxial key connection of motor shaft；The slim slide block is equipped with screw thread
Two parallel via holes of through hole and orthogonal tapped through hole, the short sliding block are equipped with the through hole of tapped through hole and orthogonal tapped through hole,
The tapped through hole of slim slide block couples with main threads of lead screw, and the tapped through hole of short sliding block couples with auxiliary threads of lead screw；Engine base it is main and auxiliary
Guide rail supports long and short sliding block to slide respectively；The dynamic platform is equipped with three through holes being parallel to each other, wherein two adjacent through-holes away from
It is identical with a distance from two through holes with above-mentioned slim slide block；One end of the connecting rod and auxiliary swing rod and middle part and the two of main swing rod
End is equipped with two identical parallel via holes of pitch-row；The through hole of main and auxiliary swing rod one end is rotated with two through holes of slim slide block respectively
Duplicate invoice connects, and the through hole in the middle part of the main swing rod other end and auxiliary swing rod couples with two adjacent through-holes revolute pairs of dynamic platform respectively, forms
Parallelogram linkage；The through hole of connecting rod one end couples with the through hole revolute pair of short sliding block, the through hole in the middle part of the connecting rod with
The dynamic remaining through hole revolute pair connection of platform；The wheel group includes wheel, cylinder, frame set, spring, and wherein cylinder one end is equipped with orthogonal
The through hole of cylinder, middle part are equipped with cylinder boss, and frame set both ends are equipped with coaxial through-hole, and wheel is rotated with cylindrical hole to be coupled, cylinder
Through the coaxial through-hole at frame set both ends, cylinder boss is located at the bottom in frame set cavity, and spring pocket is on the cylinder in cavity bore,
Both ends of the spring is against on cylinder boss and frame set top inner wall respectively, and the frame set of two wheel groups is consolidated with main swing rod and connecting rod respectively
Even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165616.4A CN108001670B (en) | 2017-11-21 | 2017-11-21 | Plane parallel plane main landing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165616.4A CN108001670B (en) | 2017-11-21 | 2017-11-21 | Plane parallel plane main landing gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108001670A true CN108001670A (en) | 2018-05-08 |
| CN108001670B CN108001670B (en) | 2021-01-08 |
Family
ID=62053044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711165616.4A Active CN108001670B (en) | 2017-11-21 | 2017-11-21 | Plane parallel plane main landing gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108001670B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592018A (en) * | 2018-11-22 | 2019-04-09 | 夏雨悦 | A kind of the autobalance undercarriage and its application method of unmanned plane |
| CN111516865A (en) * | 2020-04-29 | 2020-08-11 | 燕山大学 | Four-rotor-wing eagle parallel robot |
| CN113941398A (en) * | 2021-09-15 | 2022-01-18 | 广东东越建设有限公司 | Civil construction engineering construction waste material processing apparatus |
| CN114671011B (en) * | 2022-03-18 | 2023-10-03 | 成都飞机工业（集团）有限责任公司 | Symmetrical multi-connecting-rod electric drive aircraft landing gear structure |
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| GB543609A (en) * | 1940-07-03 | 1942-03-05 | Rollason Aircraft Instr & Equi | Improvements in or relating to undercarriage legs for aircraft |
| EP0039639A1 (en) * | 1980-05-07 | 1981-11-11 | AEROSPATIALE Société Nationale Industrielle | Landing gear strut for an aircraft main undercarriage |
| CN101797721A (en) * | 2010-02-02 | 2010-08-11 | 南京理工大学 | Three-freedom degree grinding wheel dresser based on parallel mechanisms |
| CN103895858A (en) * | 2014-03-24 | 2014-07-02 | 清华大学 | Novel undercarriage with high strength and high reliability |
| CN206069277U (en) * | 2016-09-07 | 2017-04-05 | 吉林大学 | Ultra-thin concealed type Multifunctional auto-lift or-fall and illuminator |
| CN206579167U (en) * | 2017-05-08 | 2017-10-24 | 天津赛象机电工程有限公司 | A kind of huge type project radial tire radial telescopic type assembly drum |
| CN107283248A (en) * | 2017-07-24 | 2017-10-24 | 嘉善梦溪服饰辅料厂（普通合伙） | A kind of full-automatic button edging device |
| CN206601346U (en) * | 2017-03-16 | 2017-10-31 | 武汉科技大学 | The imaging system of double planer-type surface quality of strips detection means |
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2017
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB543609A (en) * | 1940-07-03 | 1942-03-05 | Rollason Aircraft Instr & Equi | Improvements in or relating to undercarriage legs for aircraft |
| EP0039639A1 (en) * | 1980-05-07 | 1981-11-11 | AEROSPATIALE Société Nationale Industrielle | Landing gear strut for an aircraft main undercarriage |
| CN101797721A (en) * | 2010-02-02 | 2010-08-11 | 南京理工大学 | Three-freedom degree grinding wheel dresser based on parallel mechanisms |
| CN103895858A (en) * | 2014-03-24 | 2014-07-02 | 清华大学 | Novel undercarriage with high strength and high reliability |
| CN206069277U (en) * | 2016-09-07 | 2017-04-05 | 吉林大学 | Ultra-thin concealed type Multifunctional auto-lift or-fall and illuminator |
| CN206601346U (en) * | 2017-03-16 | 2017-10-31 | 武汉科技大学 | The imaging system of double planer-type surface quality of strips detection means |
| CN206579167U (en) * | 2017-05-08 | 2017-10-24 | 天津赛象机电工程有限公司 | A kind of huge type project radial tire radial telescopic type assembly drum |
| CN107283248A (en) * | 2017-07-24 | 2017-10-24 | 嘉善梦溪服饰辅料厂（普通合伙） | A kind of full-automatic button edging device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592018A (en) * | 2018-11-22 | 2019-04-09 | 夏雨悦 | A kind of the autobalance undercarriage and its application method of unmanned plane |
| CN111516865A (en) * | 2020-04-29 | 2020-08-11 | 燕山大学 | Four-rotor-wing eagle parallel robot |
| CN111516865B (en) * | 2020-04-29 | 2022-07-19 | 燕山大学 | Four-rotor-wing eagle parallel robot |
| CN113941398A (en) * | 2021-09-15 | 2022-01-18 | 广东东越建设有限公司 | Civil construction engineering construction waste material processing apparatus |
| CN114671011B (en) * | 2022-03-18 | 2023-10-03 | 成都飞机工业（集团）有限责任公司 | Symmetrical multi-connecting-rod electric drive aircraft landing gear structure |
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| Publication number | Publication date |
|---|---|
| CN108001670B (en) | 2021-01-08 |
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