CN109869429A - A kind of novel friction type shimmy-damper - Google Patents
A kind of novel friction type shimmy-damper Download PDFInfo
- Publication number
- CN109869429A CN109869429A CN201711254570.3A CN201711254570A CN109869429A CN 109869429 A CN109869429 A CN 109869429A CN 201711254570 A CN201711254570 A CN 201711254570A CN 109869429 A CN109869429 A CN 109869429A
- Authority
- CN
- China
- Prior art keywords
- friction type
- piston rod
- shimmy
- novel friction
- damper
- 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.)
- Pending
Links
Landscapes
- Springs (AREA)
Abstract
A kind of novel friction type shimmy-damper, the invention belongs to the anti-sway vibration absorbers of light aerocraft Landing Gear System to develop field.For the anti-sway damping requirements of light aerocraft Landing Gear System, the present invention proposes a kind of novel friction type shimmy-damper: using rubber parts as friction material, take straight line passive matrix, damping piece interference fit and the loaded mode of dynamic shearing, realize requirement of the landing gear of aircraft to damping force needed for anti-sway vibration damping, pass through simultaneously and adjust rubber ring magnitude of interference, thickness and surface area etc., dynamic antivibration power can be realized and stablize output and accurate adjusting.By the development to wear-resisting, high-low temperature resistant and anticorrosive rubber damping material, so that device has stronger adaptation range.Dynamic antivibration power of the present invention can careful design, dynamic antivibration power adjustable range is big, have good self lubricating system, it is applied widely, it is at low cost.
Description
Technical field
The present invention relates to a kind of novel friction type shimmy-dampers, belong to the anti-sway vibration absorber development of light aerocraft Landing Gear System
Field.
Background technique
For aircraft when ground takes off, lands or slide race, landing gear systems are it some times happens that a kind of with take-off and landing device branch
The self-excited vibration that column lateral movement and wheel assemblies intercouple around the twist motion of pillar, referred to as " shimmy ".Shimmy is a kind of
Nuisance vibration.When aircraft occurs shimmy, less serious case can make undercarriage and fuselage undue oscillation, pilot's blurred vision, and severe one can
So that landing gear structure damage, aircraft is gunned off the runway, leads to serious safety accident.In the landing gear of aircraft development and design stage,
It not only needs to carry out anti-sway design to it, antiswing device should be also installed to ensure that Landing Gear System has enough anti-sway damping forces,
Guarantee the safety of aircraft in use.
In Practical Project, most efficient method is that the oil liquid formula that installation can stablize output damping force on undercarriage subtracts pendulum
Device, it is this for general military-civil aircraft or operating ambient temperature change little aircraft to ensure structure safety
Method is widely used, and is proved to be effective.But for general light aerocraft (general-purpose aircraft, military-civil nothing
It is man-machine) and the high altitude long time aircraft that changes greatly of operating ambient temperature for, oil liquid formula shimmy-damper is attached mating hydraulic
Oil pipe not only increases aircraft weight and is also easy to cause oil circuit to be revealed because of vibration；In addition, the aviation that oil liquid formula shimmy-damper uses
Hydraulic oil viscosity can reduce or increase because of aircraft utilization variation of ambient temperature, directly result in its anti-sway damping efficiency and drop significantly
It is low, it is unfavorable for the safety of aircraft utilization.
The present invention proposes that a kind of novel friction type shimmy-damper design scheme is adopted using special rubber parts as friction material
Cut-off wire type passive matrix mode and damping piece interference fit and the loaded mode of dynamic shearing, simple and reliable for structure, dynamic hinders
Buddhist nun can careful design, adjustable range it is big, to provide low cost solution for problems.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of novel friction type shimmy-dampers, meet light aerocraft undercarriage system
It unites anti-sway damping requirements.
In order to solve the above technical problems, the technical solution of the present invention is as follows: taking straight line using rubber parts as friction material
Passive matrix, damping piece interference fit and the loaded mode of dynamic shearing, realize that landing gear of aircraft is damped to needed for anti-sway vibration damping
The requirement of power, while by adjusting rubber ring magnitude of interference, thickness and surface area etc., can be realized dynamic antivibration power stablize output and
It is accurate to adjust.By the development to wear-resisting, high-low temperature resistant and anticorrosive rubber damping material, so that device has stronger adaptation model
It encloses.
Using special rubber wear-resisting, resistant to high temperature as the damping material with outer cylinder phase mutual friction, it can be ensured that shimmy-damper
Lasting output constant damping power.By establishing the characterization of relation of damping force Yu rubber geometry and characterisitic parameter, so that shimmy-damper
Dynamic antivibration power can careful design.Self-lubricating is carried out to its contact surface using sinusoid lubrication groove mode, shimmy-damper can be reduced
The resistance of start, while reducing the abrasion of rubber damping material.Frictional shimmy-damper mainly by outer cylinder 1, piston rod 2, rubber ring 3,
The components such as transition rings 4, nut 5, end cap 6, sealing ring 7, lubricant layer 8, jointing 9 and spring 10 composition.Wherein rubber ring 3
It is combined together between transition rings 4 by vulcanization, then through thread set on piston rod 2, both ends recycle nut 5 solid
It is fixed.End cap 6 is mounted on outer cylinder 1 by screw, and dustproof effect is played.Spring 10 is primarily used to slow down piston rod 2 and end
Lid 6 is hit.Lubricant layer 8 is to be coated with special lubricating oil, plays the role of reducing abrasion, extends the service life.
Dynamic antivibration power of the present invention can careful design, dynamic antivibration power adjustable range is big, have good self lubricating system,
It is applied widely, it is at low cost.
Detailed description of the invention
Fig. 1 is novel friction type shimmy damping device structure chart.
Wherein, 1- outer cylinder, 2- piston rod, 3- rubber ring, 4- transition rings, 5- nut, 6- end cap, 7- sealing ring, 8- lubrication
Layer, 9- jointing, 10- spring
Specific embodiment
A kind of novel friction type shimmy-damper mainly by outer cylinder 1, piston rod 2, rubber ring 3, transition rings 4, nut 5, end cap 6,
The components such as sealing ring 7, lubricant layer 8, jointing 9 and spring 10 composition.Wherein pass through sulphur between rubber ring 3 and transition rings 4
Change is combined together, and then by being threadably mounted on piston rod 2, both ends recycle nut 5 fixed.End cap 6 is to pass through screw
It is mounted on outer cylinder 1, plays dustproof effect.Spring 10 is primarily used to slow down piston rod 2 to be hit with end cap 6.Lubricant layer 8
It is to be coated with special lubricating oil, plays the role of reducing abrasion, extend the service life.
Dynamic antivibration power is to act on normal pressure and outer cylinder and rubber interannular coefficient of friction product total on rubber ring surface,
And coefficient of friction is certain, the factors such as normal pressure and rubber ring magnitude of interference, thickness, external surface area and elasticity modulus are related, pass through
The modified method of numerical simulation and field test establishes the equivalent characterizing method of a set of general dynamic antivibration power and above-mentioned factor
Realize that dynamic antivibration power can careful design.
After rubber material determines, dynamic antivibration power is only related with rubber ring area, thickness and magnitude of interference.Therefore, may be used
To realize a wide range of adjusting of dynamic antivibration power by the area, thickness and the magnitude of interference that change rubber ring.
When piston rod moves reciprocatingly with rubber damping ring (transition rings and rubber ring combine), rubber damping ring surface
Upper reserved sinusoidal lubrication groove is full of lubricant, and the self-lubricating effect for being interference fitted lower system can be realized.
This product core rubber damping material, with the performances such as excellent wear-resisting, high-low temperature resistant and salt fog resistance corrosion, because
This, it is ensured that it is wide to try out range for reliability of the device under various complex environments.
Present apparatus outer cylinder and attachment process not special technique requirement, also do not need special material；The rubber of core
Damping material is due to formula it has been determined that subsequent only change structure size according to different demands；Furthermore rubber damping ring is to pass through
It is threadedly coupled on the piston rod, this mode is conveniently replaceable.In summary the processing cost of factor, the present apparatus is lower.
Claims (7)
1. a kind of novel friction type shimmy-damper, it is characterised in that: by outer cylinder (1), piston rod (2), rubber ring (3), transition rings
(4), the components such as nut (5), end cap (6), lubricant layer (8), jointing (9) and spring (10) form；Wherein rubber ring (3)
It is combined together between transition rings (4) by vulcanization；Transition rings (4) cover on piston rod (2), and both ends recycle nut (5)
Blocked fixation；Piston rod (2) passes through outer cylinder (1)；Round-meshed end cap (6) is mounted on outer cylinder (1) open at one end；Outer cylinder
(1) it is equipped with spring (10) on the inside of both ends, spring pocket is on piston rod (2)；There is lubricant layer between rubber ring (3) and outer cylinder (1).
2. a kind of novel friction type shimmy-damper according to claim 1, it is characterised in that: transition rings (4) use metal material
Matter, transition rings (4) are threadedly coupled with piston rod (2).
3. a kind of novel friction type shimmy-damper according to claim 1, it is characterised in that: spring (10) one end is fixed on work
On stopper rod (2).
4. a kind of novel friction type shimmy-damper according to claim 1, it is characterised in that: spring (10) is in a manner of movable
It covers on piston rod (2).
5. a kind of novel friction type shimmy-damper according to claim 1, it is characterised in that: nut (5) and piston rod thread
Connection.
6. a kind of novel friction type shimmy-damper according to claim 1, it is characterised in that: piston rod (2) and end cap (6) it
Between, between piston rod (2) and outer cylinder (1) sealing ring (7) are installed.
7. novel friction type shimmy-damper according to any one of claims 1 to 5, it is characterised in that: on the outside of rubber ring
It is provided with lubrication groove, is coated with lubricating oil, forms lubricant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711254570.3A CN109869429A (en) | 2017-12-01 | 2017-12-01 | A kind of novel friction type shimmy-damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711254570.3A CN109869429A (en) | 2017-12-01 | 2017-12-01 | A kind of novel friction type shimmy-damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109869429A true CN109869429A (en) | 2019-06-11 |
Family
ID=66913911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711254570.3A Pending CN109869429A (en) | 2017-12-01 | 2017-12-01 | A kind of novel friction type shimmy-damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109869429A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242695A (en) * | 2019-06-19 | 2019-09-17 | 西安斯科特环控科技有限责任公司 | A kind of rubber friction damper system of air pressure adjustment control |
| CN113460293A (en) * | 2020-03-31 | 2021-10-01 | 湖南山河科技股份有限公司 | Damping-adjustable front wheel shimmy damper for small and medium-sized unmanned aerial vehicles |
| CN114102755A (en) * | 2021-10-09 | 2022-03-01 | 江苏盈达机电科技有限公司 | Cutting device for aluminum foil heat preservation cotton of air port at tail end of central air conditioner |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2524592A1 (en) * | 1975-06-03 | 1976-12-23 | Wilhelm Gronbach | Telescopic spring shock absorber for washing machine - allowing piston to transmit uniform specific pressure and conduct heat away |
| CN2114067U (en) * | 1992-03-09 | 1992-08-26 | 胜利石油管理局钻井工艺研究院 | Single-piece piston of displacement pump |
| US5257680A (en) * | 1991-12-20 | 1993-11-02 | Lord Corporation | Surface effect dampers having both hysteresis and a frictional component |
| CN201843226U (en) * | 2010-03-29 | 2011-05-25 | 王涛 | Variable-rigidity friction type energy-consumption damping device |
| 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 |
| CN203222903U (en) * | 2013-04-12 | 2013-10-02 | 武汉理工大学 | Variable rigidity friction damper |
| CN103821872A (en) * | 2014-03-17 | 2014-05-28 | 济南大学 | Novel friction damper |
| CN206159354U (en) * | 2016-11-16 | 2017-05-10 | 华东交通大学 | Twin coil magnetorheological valve accuse double acting cylinder damping system |
| CN206555084U (en) * | 2017-03-07 | 2017-10-13 | 青岛海诺奥石油机械制造有限公司 | Mud piston |
-
2017
- 2017-12-01 CN CN201711254570.3A patent/CN109869429A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2524592A1 (en) * | 1975-06-03 | 1976-12-23 | Wilhelm Gronbach | Telescopic spring shock absorber for washing machine - allowing piston to transmit uniform specific pressure and conduct heat away |
| US5257680A (en) * | 1991-12-20 | 1993-11-02 | Lord Corporation | Surface effect dampers having both hysteresis and a frictional component |
| CN2114067U (en) * | 1992-03-09 | 1992-08-26 | 胜利石油管理局钻井工艺研究院 | Single-piece piston of displacement pump |
| CN201843226U (en) * | 2010-03-29 | 2011-05-25 | 王涛 | Variable-rigidity friction type energy-consumption damping device |
| 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 |
| CN203222903U (en) * | 2013-04-12 | 2013-10-02 | 武汉理工大学 | Variable rigidity friction damper |
| CN103821872A (en) * | 2014-03-17 | 2014-05-28 | 济南大学 | Novel friction damper |
| CN206159354U (en) * | 2016-11-16 | 2017-05-10 | 华东交通大学 | Twin coil magnetorheological valve accuse double acting cylinder damping system |
| CN206555084U (en) * | 2017-03-07 | 2017-10-13 | 青岛海诺奥石油机械制造有限公司 | Mud piston |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242695A (en) * | 2019-06-19 | 2019-09-17 | 西安斯科特环控科技有限责任公司 | A kind of rubber friction damper system of air pressure adjustment control |
| CN110242695B (en) * | 2019-06-19 | 2024-05-24 | 西安斯科特环控科技有限责任公司 | Pneumatic-regulation-control rubber friction shock absorber system |
| CN113460293A (en) * | 2020-03-31 | 2021-10-01 | 湖南山河科技股份有限公司 | Damping-adjustable front wheel shimmy damper for small and medium-sized unmanned aerial vehicles |
| CN113460293B (en) * | 2020-03-31 | 2024-01-30 | 山河星航实业股份有限公司 | Adjustable damping front wheel shimmy damper of small and medium-sized unmanned aerial vehicle |
| CN114102755A (en) * | 2021-10-09 | 2022-03-01 | 江苏盈达机电科技有限公司 | Cutting device for aluminum foil heat preservation cotton of air port at tail end of central air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109869429A (en) | A kind of novel friction type shimmy-damper | |
| CN202531717U (en) | Damping hole fine-adjustable hydraulic buffer | |
| US3696894A (en) | Acceleration sensitive shock absorber valve | |
| CN108974333B (en) | Full-oil buffer and compensation device | |
| US20070164151A1 (en) | Aircraft shock strut and improved bearings therefor | |
| CN106763424B (en) | A kind of undercarriage buffer design method becoming oilhole based on oil back chamber | |
| CN104482102B (en) | Locomotive vehicle oil hydraulic damper | |
| CN107061590A (en) | A kind of damper device | |
| CN109253127A (en) | A kind of ball head structure anti-bias load heavy duty servo hydraulic cylinder | |
| CN102588482A (en) | Moderate transition method for variable stiffness of composite rubber stopping block and composite rubber stopping block | |
| CN108791827A (en) | A kind of controller and control method for undercarriage magnetorheological shimmy damper | |
| Lou et al. | An electrorheologically controlled semi-active landing gear | |
| CN210218526U (en) | Rubber friction shock absorber with adjustable structure | |
| CN202674146U (en) | Sealing device for oil damper | |
| CN106884922A (en) | A kind of hydraulic damper compensated automatically with oil pocket | |
| CN205226203U (en) | Hydraulic damper with oil pocket automatic compensation | |
| US2231332A (en) | Shock absorbing strut | |
| CN103591079B (en) | Novel hydraulic cylinder | |
| CN109296586A (en) | A kind of hydraulic cylinder | |
| CN201953971U (en) | Oil sight glass for speed reducer | |
| CN107606035A (en) | A kind of intelligent Effects of Viscous Fluid Damper | |
| CN209671511U (en) | A kind of hydraulic spring grease cup buffer | |
| CN203979261U (en) | A kind of vibration damper sealing system | |
| CN109229346B (en) | Buffer suitable for miniature unmanned vehicles oil gas shock attenuation formula undercarriage | |
| CN203836184U (en) | Combination piston covered with rubber |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190611 |