CN113460293B - Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle - Google Patents
Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle Download PDFInfo
- Publication number
- CN113460293B CN113460293B CN202010244172.9A CN202010244172A CN113460293B CN 113460293 B CN113460293 B CN 113460293B CN 202010244172 A CN202010244172 A CN 202010244172A CN 113460293 B CN113460293 B CN 113460293B
- Authority
- CN
- China
- Prior art keywords
- spring
- outer cylinder
- sliding rod
- unmanned aerial
- adjusting
- 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.)
- Active
Links
- 238000013016 damping Methods 0.000 title claims abstract description 29
- 230000000903 blocking effect Effects 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000003638 chemical reducing agent Substances 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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
- B64C25/505—Shimmy damping
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses an adjustable damping front wheel shimmy damper of a medium-and small-sized unmanned aerial vehicle, which comprises a connecting rod, a sliding rod, an outer cylinder, an adjusting blanking cover I, a spring I, a check ring I, an adjusting blanking cover II, a spring II and a check ring II. The connecting rod is in threaded connection with the sliding rod, the sliding rod penetrates into the outer cylinder, the first spring and the second spring are arranged between the sliding rod and a gap of the outer cylinder, the first check ring and the second check ring are arranged between the first spring and the second spring, and the first adjusting blocking cover and the second adjusting blocking cover are in threaded connection with two ends of the outer cylinder. The swing reducer eliminates force transmission gaps, can adjust forward/backward pre-damping, is convenient and quick to adjust, has the advantages of simple structure, low processing and manufacturing cost, small volume and light weight, does not fill oil in a cylinder, does not have the oil leakage problem of the traditional oil swing reducer, and reduces the manufacturing and maintenance cost.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicle devices, in particular to an adjustable damping front wheel shimmy damper of a small and medium-sized unmanned aerial vehicle.
Background
Landing gear shimmy has long existed as a serious failure factor for aircraft, and mere adjustment of the landing gear's own strength and stiffness is insufficient to prevent shimmy. Long-term practice has proven that the mounting of special shimmy reducers on landing gear is the most effective means of preventing shimmy of the landing gear.
As an indispensable component for preventing the shimmy of the landing gear, how to achieve the shimmy-damping requirement in the simplest and most efficient structural form and how to determine the damping characteristics of the shimmy damper are the most important problems in the design and manufacturing process of the shimmy damper. The conventional unmanned aerial vehicle front wheel shimmy damper in China mostly adopts oil damping type, has the advantages of complex structure, high manufacturing process requirement, long debugging period and large volume weight, and is only suitable for large unmanned aerial vehicles. For small and medium-sized unmanned aerial vehicles, a small-sized unmanned aerial vehicle shimmy damper is mostly adopted at present. However, when the unmanned aerial vehicle shimmy damper is applied to the front-wheel electric steering system of the unmanned aerial vehicle, the problems of increasing the load of a steering engine, being incapable of eliminating a force transmission gap and the like exist, and the unmanned aerial vehicle shimmy damper cannot be well matched with the front-wheel electric steering system.
In order to meet the requirements of miniaturization, light weight, low cost, low maintenance and good adaptation of a power steering system of a front wheel shimmy damper of a small and medium-sized unmanned aerial vehicle, the light weight small shimmy damper with adjustable damping, simple structure and low manufacturing cost is designed to be an urgent task in the current development of the small and medium-sized unmanned aerial vehicle.
Disclosure of Invention
The invention aims to solve the technical problems that an existing unmanned aerial vehicle adopts an oil type swing reducer with a man-machine to increase the load of a steering engine, can eliminate a force transmission gap and cannot be adapted to a front wheel electric steering system, and provides an adjustable damping front wheel swing reducer for a small and medium-sized unmanned aerial vehicle.
The aim of the invention is realized by the following technical scheme:
an adjustable damping front wheel shimmy damper of a small and medium-sized unmanned aerial vehicle comprises a connecting rod, a sliding rod, an outer cylinder, an adjusting blanking cover I, a spring I, a check ring I, an adjusting blanking cover II, a spring II and a check ring II;
the outer cylinder is a hollow cylinder, the sliding rod penetrates into the outer cylinder, a gap is reserved between the outer cylinder and the sliding rod, the first spring and the second spring are arranged in the gap between the outer cylinder and the sliding rod, and the first adjusting blocking cover and the second adjusting blocking cover are connected with two ends of the outer cylinder to fixedly compress the first spring and the second spring in the outer cylinder; the inner wall of the outer cylinder is provided with a convex inner ring, the first spring and the second spring are respectively arranged at two sides of the inner ring, a first check ring is arranged between the first spring and the inner ring, and a second check ring is arranged between the second spring and the inner ring; the sliding rod is a round rod with one end drilled, the connecting rod is screwed into the sliding rod through threads, and the outer wall of the sliding rod corresponding to the inner ring of the outer cylinder is provided with a convex outer ring.
When the transferred steering force does not exceed the pre-damping force, the swing reducer is a rigid body, and a force transmission gap does not exist; when impact or shimmy occurs, the sliding rod drives the retainer ring to overcome the damping force of the spring and slide back and forth in the outer cylinder, and meanwhile, the shimmy is rapidly attenuated by the damping of the spring, so that the shimmy is reduced. If the external impact is too large, the square springs are combined, so that the damage of the shimmy damper is avoided.
Further, an adjusting nut is arranged at the threaded connection part of the connecting rod and the sliding rod, and the whole length of the connecting rod and the sliding rod is controlled by adjusting the adjusting nut, so that the purpose of adjusting the length of the shimmy damper is achieved.
Furthermore, the first spring and/or the second spring are/is square springs, and when the square springs are stressed and looped, the spring loops cannot be misplaced, so that two limit designs can be reduced, and the manufacturing and processing difficulty and cost are reduced.
Further, the sum of the heights of the inner ring of the outer cylinder and the outer ring of the sliding rod is equal to the size of the gap between the outer cylinder and the sliding rod.
Further, the first adjusting blocking cover and/or the second adjusting blocking cover are connected to two ends of the outer cylinder through threads, and the pre-damping effect can be adjusted through adjusting the screwing degree of the first adjusting blocking cover.
Further, one end of the connecting rod is provided with an earring connected with a steering rocker arm of the landing gear, and the second adjusting blocking cover is provided with an earring connected with the steering engine rocker arm.
Compared with the prior art, the beneficial effects are that:
the adjustable damping front wheel shimmy damper of the small and medium-sized unmanned aerial vehicle creatively ensures that front and rear pre-damping does not directly act on the sliding rod by arranging the first check ring, the second check ring and the inner ring of the inner wall of the outer cylinder, and the sliding rod can slide forwards/backwards in the outer cylinder only when the steering force transmitted by the shimmy damper exceeds the forward/backward pre-damping, thereby thoroughly eliminating a force transmission gap.
The damping element used in the invention adopts the square spring, and each spring ring can not be misplaced when the square spring is stressed and looped, so that two limit designs can be reduced, and the manufacturing and processing difficulty and cost are reduced. And the forward/backward pre-damping can be respectively adjusted by adjusting the screwing degree of the blocking cover, so that the adjustment is convenient and quick.
The adjustable damping front wheel shimmy damper of the small and medium-sized unmanned aerial vehicle has the advantages of simple structure, low processing and manufacturing cost, small volume and light weight, no oil is filled in the cylinder, the oil leakage problem of the traditional oil shimmy damper is avoided, and the manufacturing and maintenance cost is reduced.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a cross-sectional view of the structure of the present invention.
The device comprises a connecting rod 1, an adjusting nut 2, an adjusting plug cover 3, a spring 4, a retainer ring 5, an outer cylinder 6, a retainer ring 7, a spring 8 and a sliding rod 10, an earring 11 and an earring 12.
Detailed Description
The present invention is further illustrated and described below with reference to examples, which are not intended to be limiting in any way. Unless otherwise indicated, the methods and apparatus used in the examples were conventional in the art and the starting materials used were all conventional commercially available.
Example 1
The adjustable damping front wheel shimmy damper for the small and medium unmanned aerial vehicle comprises a connecting rod 1, an adjusting blanking cover I3, a spring I4, a check ring I5, an outer cylinder 6, a check ring II 7, a spring II 8, an adjusting blanking cover II 9 and a sliding rod 10.
The outer cylinder 6 is a hollow cylinder, the sliding rod 10 penetrates into the outer cylinder 6, a gap is reserved between the outer cylinder 6 and the sliding rod 10, the square spring I4 and the square spring II 8 are arranged in the gap between the outer cylinder 6 and the sliding rod 10, the adjusting plug I3 and the adjusting plug II 9 are connected with two ends of the outer cylinder 6 to fixedly compress the square spring I4 and the square spring II 8 in the outer cylinder 6, and the adjusting plug II 9 is provided with an earring II 12 connected with a steering engine rocker arm.
The inner wall of the outer cylinder 6 is provided with a convex inner ring, the first spring 4 and the second spring 8 are respectively arranged on two sides of the inner ring, a first check ring 5 is arranged between the first spring 4 and the inner ring, and a second check ring 7 is arranged between the second spring 8 and the inner ring.
The sliding rod 10 is a round rod with one end drilled, a convex outer ring is arranged on the outer wall of the sliding rod 10 corresponding to the inner ring of the outer cylinder 6, the connecting rod 1 is screwed into the sliding rod 10 through threads, and one end of the connecting rod 1 is provided with a first earring 11 connected with a landing gear steering rocker arm.
Example 2
As shown in fig. 1-2, an adjustable damping front wheel shimmy damper of a small and medium-sized unmanned aerial vehicle comprises a connecting rod 1, an adjusting nut 2, an adjusting blocking cover I3, a square spring I4, a check ring I5, an outer cylinder 6, a check ring II 7, a square spring II 8, an adjusting blocking cover II 9 and a sliding rod 10.
The outer cylinder 6 is a hollow cylinder, the sliding rod 10 penetrates into the outer cylinder, a gap is reserved between the outer cylinder 6 and the sliding rod 10, the square spring I4 and the square spring II 8 are arranged in the gap between the outer cylinder 6 and the sliding rod 10, the square spring I4 is fixed in the outer cylinder 6 through threaded connection by the adjusting plug I3, the square spring II 8 is fixedly compressed in the outer cylinder 6 through threaded connection by the adjusting plug II 9, and the earrings 12 connected with steering engine rocker arms are arranged on the adjusting plug II 9.
The inner wall of the outer cylinder 6 is provided with a convex inner ring, the square spring I4 and the square spring II 8 are respectively arranged on two sides of the inner ring, the check ring I5 is arranged between the square spring I4 and the inner ring, and the check ring II 7 is arranged between the square spring II 8 and the inner ring.
The sliding rod 10 is a round rod with one end drilled, a convex outer ring is arranged on the outer wall of the sliding rod 10 corresponding to the inner ring of the outer cylinder 6, the outer ring of the outer wall of the sliding rod 10 is matched with the inner ring of the inner wall of the outer cylinder 6, the connecting rod 1 is screwed into the sliding rod 10 through threads, an adjusting nut 2 is arranged at the threaded connection position, the whole length of the swing reducer can be adjusted, and one end of the connecting rod 1 is provided with an earring I11 connected with a landing gear steering rocker arm.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. The adjustable damping front wheel shimmy damper of the small and medium-sized unmanned aerial vehicle is characterized by comprising a connecting rod, a sliding rod, an outer cylinder, an adjusting blanking cover I, a spring I, a check ring I, an adjusting blanking cover II, a spring II and a check ring II;
the outer cylinder is a hollow cylinder, the sliding rod penetrates into the outer cylinder, a gap is reserved between the outer cylinder and the sliding rod, the first spring and the second spring are arranged in the gap between the outer cylinder and the sliding rod, and the first adjusting blocking cover and the second adjusting blocking cover are connected with two ends of the outer cylinder to fix the first spring and the second spring in the outer cylinder; the inner wall of the outer cylinder is provided with a convex inner ring, the first spring and the second spring are respectively arranged at two sides of the inner ring, a first check ring is arranged between the first spring and the inner ring, and a second check ring is arranged between the second spring and the inner ring;
the sliding rod is a round rod with one end drilled, the connecting rod is screwed into the sliding rod through threads, and a convex outer ring is arranged on the outer wall of the sliding rod corresponding to the inner ring of the outer cylinder;
the first adjusting blocking cover and/or the second adjusting blocking cover are connected to the two ends of the outer cylinder through threads.
2. The adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle according to claim 1, wherein an adjusting nut is arranged at the threaded connection part of the connecting rod and the sliding rod.
3. The adjustable damping front wheel shimmy damper of a small and medium sized unmanned aerial vehicle according to claim 1, wherein the first spring and/or the second spring is a square spring.
4. The adjustable damping front wheel shimmy damper of small and medium sized unmanned aerial vehicle according to claim 1, wherein the sum of the heights of the inner ring of the outer cylinder and the outer ring of the sliding rod is equal to the size of a gap between the outer cylinder and the sliding rod.
5. The adjustable damping front wheel shimmy damper of small and medium sized unmanned aerial vehicle of claim 1, wherein one end of the connecting rod has an ear ring connected to the landing gear steering rocker arm.
6. The adjustable damping front wheel shimmy damper of the small and medium-sized unmanned aerial vehicle according to claim 1, wherein the second adjusting blocking cover is provided with an earring connected with a steering engine rocker arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244172.9A CN113460293B (en) | 2020-03-31 | 2020-03-31 | Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244172.9A CN113460293B (en) | 2020-03-31 | 2020-03-31 | Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113460293A CN113460293A (en) | 2021-10-01 |
| CN113460293B true CN113460293B (en) | 2024-01-30 |
Family
ID=77865535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010244172.9A Active CN113460293B (en) | 2020-03-31 | 2020-03-31 | Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113460293B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB503807A (en) * | 1937-11-30 | 1939-04-14 | Ribbesford Company Ltd | Improvements in or relating to landing gear for aircraft |
| CN201800917U (en) * | 2010-09-30 | 2011-04-20 | 湖南山河科技股份有限公司 | Anti-shimmy mechanism of landing wheel |
| CN202244082U (en) * | 2011-08-29 | 2012-05-30 | 湖南山河科技股份有限公司 | Shimmy damper for rotor wing of helicopter |
| CN103038538A (en) * | 2010-07-29 | 2013-04-10 | 梅西耶-道提股份有限公司 | Hydraulic shimmy damper for aircraft landing gear |
| CN103523218A (en) * | 2013-10-12 | 2014-01-22 | 中国航天空气动力技术研究院 | Unmanned plane damping-adjustable front-wheel shimmy-damper |
| CN107780744A (en) * | 2016-08-31 | 2018-03-09 | 赵芬 | Angle positioning and self-closing hinge can be adjusted |
| RU2648483C1 (en) * | 2016-09-19 | 2018-03-26 | Олег Савельевич Кочетов | Combined vibration isolator |
| CN107878738A (en) * | 2016-09-29 | 2018-04-06 | 赛峰起落架系统公司 | It is equipped with the aircraft landing gear of shimmy Fader device |
| CN108394552A (en) * | 2018-03-06 | 2018-08-14 | 北京特种机械研究所 | A kind of piston type shimmy-damper based on atmospheric pressure compensating |
| CN109869429A (en) * | 2017-12-01 | 2019-06-11 | 中国飞机强度研究所 | A kind of novel friction type shimmy-damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2937950A1 (en) * | 2008-03-05 | 2010-05-07 | Goodrich Corp | SHIMMY SHOCK ABSORBER FOR AIRCRAFT LANDING TRAIN |
-
2020
- 2020-03-31 CN CN202010244172.9A patent/CN113460293B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB503807A (en) * | 1937-11-30 | 1939-04-14 | Ribbesford Company Ltd | Improvements in or relating to landing gear for aircraft |
| CN103038538A (en) * | 2010-07-29 | 2013-04-10 | 梅西耶-道提股份有限公司 | Hydraulic shimmy damper for aircraft landing gear |
| CN201800917U (en) * | 2010-09-30 | 2011-04-20 | 湖南山河科技股份有限公司 | Anti-shimmy mechanism of landing wheel |
| CN202244082U (en) * | 2011-08-29 | 2012-05-30 | 湖南山河科技股份有限公司 | Shimmy damper for rotor wing of helicopter |
| CN103523218A (en) * | 2013-10-12 | 2014-01-22 | 中国航天空气动力技术研究院 | Unmanned plane damping-adjustable front-wheel shimmy-damper |
| CN107780744A (en) * | 2016-08-31 | 2018-03-09 | 赵芬 | Angle positioning and self-closing hinge can be adjusted |
| RU2648483C1 (en) * | 2016-09-19 | 2018-03-26 | Олег Савельевич Кочетов | Combined vibration isolator |
| CN107878738A (en) * | 2016-09-29 | 2018-04-06 | 赛峰起落架系统公司 | It is equipped with the aircraft landing gear of shimmy Fader device |
| CN109869429A (en) * | 2017-12-01 | 2019-06-11 | 中国飞机强度研究所 | A kind of novel friction type shimmy-damper |
| CN108394552A (en) * | 2018-03-06 | 2018-08-14 | 北京特种机械研究所 | A kind of piston type shimmy-damper based on atmospheric pressure compensating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113460293A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11143265B2 (en) | SMA-STF based viscous damper | |
| CN201694006U (en) | Two-way buffering mechanism of draw bar | |
| CN101985302A (en) | Central buffering connector | |
| CN105416576A (en) | Multi-stage buffering undercarriage of unmanned aerial vehicle | |
| CN113460293B (en) | Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle | |
| CN108035598B (en) | Semi-active/passive hybrid damping device | |
| CN201973158U (en) | High-speed damping unloading valve for automobile shock absorber piston | |
| CN108061105B (en) | Plum coupling | |
| CN201696543U (en) | Damping fixing device | |
| CN110805644A (en) | Three-way multi-damping vibration isolator | |
| CN204647115U (en) | A kind of base inner wall variable curvature bus vibration isolator | |
| CN206419402U (en) | Many springs are not in the mood for damping device and electric car | |
| CN110375028B (en) | Combined motorcycle shock absorber and shock absorption method thereof | |
| CN202827709U (en) | Adjustable unloading device | |
| CN115435042A (en) | Limiting method of spherical hinge for suspension vibration reduction | |
| CN210949665U (en) | Mobile robot shock absorber | |
| CN203297447U (en) | Novel double torsional springs | |
| CN210049080U (en) | Rubber vibration-damping damper | |
| CN108612795B (en) | Shock-absorbing device | |
| CN113007256A (en) | Split type hydraulic damper easy to replace and maintain | |
| CN214578554U (en) | Nonlinear metal vibration isolator | |
| CN203161960U (en) | Multi-spring combined shock absorber | |
| CN216343675U (en) | Bidirectional large-bearing rod piece type vibration damper | |
| CN211106832U (en) | Suspension pull rod structure for axle | |
| CN212839119U (en) | Upper assembly buffer adjusting device of motorcycle rear axle shock absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 412002 no.768 Zhixing street, Lusong District, Zhuzhou City, Hunan Province Applicant after: Shanhe Xinghang Industrial Co.,Ltd. Address before: 412002 no.768 Zhixing street, Lusong District, Zhuzhou City, Hunan Province Applicant before: HUNAN SUNWARD SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |