CN107339360A - A kind of undercarriage buffer - Google Patents
A kind of undercarriage buffer Download PDFInfo
- Publication number
- CN107339360A CN107339360A CN201710806253.1A CN201710806253A CN107339360A CN 107339360 A CN107339360 A CN 107339360A CN 201710806253 A CN201710806253 A CN 201710806253A CN 107339360 A CN107339360 A CN 107339360A
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- China
- Prior art keywords
- piston rod
- plunger
- outer barrel
- open cavity
- damping
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of undercarriage buffer, it includes outer barrel component, piston rod assembly and plunger assembly, one end of plunger assembly is fixedly mounted in the blind end of outer barrel component, piston rod assembly is movably set in outer barrel component, the inner of piston rod assembly sets the first open cavity, the other end of plunger assembly sets the second open cavity, and one end slip cap with the second open cavity of plunger assembly is in the first open cavity of piston rod assembly, by piston rod assembly, outer barrel space is divided into air cavity I and main oil pocket II by being mutually arranged for plunger assembly, oil back chamber III is formed between piston rod assembly and outer barrel component；Third space is left between plunger and piston rod inwall, the second open cavity opening of plunger is fixedly installed positive stroke orifice valve, is provided for being turned on and off the second floating ring of third space between positive the stroke orifice valve and plunger；The excessively oily passage of oil back chamber III, which is provided with, can adjust the adjustment component that oily passage crosses pasta product.
Description
Technical field
The present invention relates to undercarriage buffer, more particularly to a kind of buffer knot suitable for unmanned plane undercarriage
Structure.
Background technology
Usual undercarriage buffer is using industrial nitrogen and aircraft fluid as working media, during landing, buffering piston bar
Compressed, main oil pocket volume diminishes, and forces main oil pocket inner fluid to enter air cavity through damping hole, and this process produces frictional damping, will
Kinetic energy is changed into heat energy, and heat energy is distributed energy by structural member, and the energy for not dissipating savings in compressed gas promotes
Air cavity fluid enters oil back chamber after the damping of oil back chamber damping hole, and positive travel compression is completed；During revesal, the gas to suffer oppression is swollen
It is swollen, force piston rod to stretch out, oil back chamber volume further diminishes, and nitrogen pressure promotes oil back chamber fluid by oil back chamber through damping hole
Air cavity is flowed into, this process produces frictional damping again, converts kinetic energy into heat energy, and air cavity fluid flows into main oil through damping hole
Chamber, buffer revesal terminate.In whole motion process, buffering piston bar compresses or stretched out with the change of external applied load,
Fluid in buffer flows through at a high speed positive and negative stroke damping hole, produces retardance, and aircraft landing kinetic energy is converted into heat energy dissipates
Fall.
Main oil pocket, the positive revesal damping hole of oil back chamber are designed as normal oilhole, but this type by conventional buffer in design
Buffer structure find in the course of the work the main oil pocket fluid of revesal can not more quick backflow, second of compression travel when
The hidden danger that causes shock-absorbing capacity poor etc. due to buffer medium deficiency.
To adjust positive revesal damping hole area, at present frequently with the combining structure shape of cylindroid helical-coil compression spring and baffle plate
Formula, but the structure of this type is due to the problems such as space-consuming is big, discontinuity, structural wear.Therefore short stroke is not suitable for it
Unmanned plane undercarriage.
The content of the invention
The invention solves technology solve problem and be, in view of the shortcomings of the prior art, providing a kind of height that can realize quick oil return
Efficiency undercarriage buffer.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of undercarriage buffer, including it is outer
Cartridge module, piston rod assembly and plunger assembly, wherein：
The outer barrel component includes outer barrel and is arranged at the lower cam of outer barrel openend, and the upper end of the lower cam inside contracts, and makes lower cam
The first gap is formed between outer barrel；
The piston rod assembly includes the piston rod that one end carries the first open cavity, and the one end of the piston rod with the first open cavity covers
Formed in outer barrel component and with outer barrel component and closed, overhead cam is set on the outside shaft shoulder of the piston rod, under overhead cam
End inside contracts, and makes to form the second gap between lower cam and outer barrel, the overhead cam upper end order fixed setting damping outside piston rod
Ring and upper support, and formed and closed between support and outer barrel on this；
The plunger assembly includes the plunger that outer barrel blind end is fixed in one end, and the other end of the plunger sets the second open cavity and inserted
Enter in the first open cavity of piston rod, third space is left between plunger and piston rod inwall, the second open cavity of plunger is opened
The positive stroke orifice valve of fixed setting, is provided for being turned on and off third space between positive the stroke orifice valve and plunger at mouthful
Second floating ring；
Outer tube inner chamber above overhead cam and floating ring forms air cavity, and the first open cavity below the first floating ring forms main oil
Chamber, first and second gap between upper and lower cam merge to form oil back chamber；
Spill port is set on the overhead cam, multiple first through hole are set on the second open cavity of plunger, in face of the piston of damping ring
Multiple second through holes are set on bar, third through-hole is opened up on damping ring, first, second and third through hole is connected to form oily passage, and
The excessively oily passage, which is provided with, can adjust the adjustment component that oily passage crosses pasta product.
In such scheme, the adjustment component is arranged at wavy spring and the first floating ring above overhead cam for order,
And the wavy spring has a precompression.
The openend of the outer barrel sets cap nut.
The upper support is symmetrical open architecture, and outer support is fixed on the piston rod by collar.
The positive stroke orifice valve is fixed after being connected through a screw thread with plunger with pin.
The plunger is fixed on outer barrel by nut, check washer.
The present invention is by the mentality of designing that changes former main oil pocket, the positive and negative stroke damping hole of oil back chamber is normal oilhole, during design
The positive stroke damping hole of main oil pocket is less than revesal damping hole, realize that revesal fluid is fast by fluid within the relatively short time
Speed is back to main oil pocket, with pending buffer-process next time, simultaneously because buffer has dissipated one in positive stroke
Divide energy, when carrying out revesal, the flow velocity of fluid has reduced, and to improve damping, reduces the revesal resistance of oil back chamber
Buddhist nun's hole area, enable buffer quick oil return while buffering efficiency is not reduced.
Inner space is divided into air cavity I and main oil pocket II, piston rod by the piston rod assembly of the buffer with plunger assembly
It is oil back chamber III between component and outer barrel component, air cavity I is filled with aircraft fluid and industrial nitrogen, and piston rod assembly carries outside
Moving for upper-lower position can be made in the presence of lotus along outer barrel, to flow through positive and negative stroke damping hole complete so as to which compressed gas promotes fluid
Into energy dissipation.
Compared with prior art, effect possessed by the present invention is：
This invention removes in conventional design because of main oil pocket, the positive revesal damping hole area of oil back chamber is constant or positive stroke damping hole
Revesal fluid caused by area is big, revesal damping hole is small can not quick backflow and when compressing again buffer medium deficiency and
Caused by the poor hidden danger of shock-absorbing capacity；
Undercarriage buffer structure that the present invention can be used as unmanned plane is simple, easy care, weight are lighter than conventional unmanned plane and risen
Fall frame buffer.
Brief description of the drawings
Fig. 1 is undercarriage buffer structure figure of the present invention.
Fig. 2 is the positive stroke operating diagram of undercarriage buffer of the present invention.
Fig. 3 is undercarriage buffer revesal operating diagram of the present invention.
Fig. 4 is A directions view in Fig. 1.
Fig. 5 is the structure chart of wavy spring of the present invention.
In figure：Support on 1-, 2- piston rods, 3- damping rings, the floating rings of 4- first, 5- wavy springs, 6- overhead cams, outside 7-
Cover nut, 8- lower cams, the positive stroke orifice valves of 9-, the floating rings of 10- second, 11- outer barrels, 12- plungers, 13- collars, 14- oil returns
Hole, 15- first through hole, the through holes of 16- second, 17- third through-holes, 18- fourth holes, I-air cavity, II-main oil pocket, III-oil return
Chamber.
Embodiment
As Figure 1-Figure 5, undercarriage buffer of the present invention includes outer barrel component, plunger assembly, piston rod group
One end of plunger assembly is fixedly mounted in part, the blind end of outer barrel component, and piston rod assembly is movably set in outer barrel component, piston
The inner of bar assembly sets the first open cavity, and the other end of plunger assembly sets the second open cavity, and plunger assembly has the
One end slip cap of two open cavities is in the first open cavity of piston rod assembly, by the phase of piston rod assembly, plunger assembly
Mutually it is arranged and outer barrel space is divided into air cavity I and main oil pocket II, oil back chamber III is formed between piston rod assembly and outer barrel component,
Piston rod assembly can make moving for upper-lower position in the presence of external applied load along outer barrel 11, so as to which compressed gas promotes fluid to flow through
Positive and negative stroke damping hole completes energy dissipation.
Outer barrel component includes the parts such as outer barrel 11, lower cam 8, cap nut 7, charging connector.Outside the bottom of the lower cam 8
It is convex, and the openend of outer barrel 11 is fixed on by 4 limit screws, and the bottom design of lower cam 8 has installation dust ring, gear
Circle, the annular groove of O-ring seal, the openend outside of outer barrel 11 set cap nut 7, outer barrel 11 is internally formed for filling
Aircraft fluid and industrial nitrogen closed chamber；The top external diameter of lower cam 8 inside contracts, and makes between the top of lower cam 8 and outer barrel 11
Form the first gap.
Piston rod assembly includes upper support 1, piston rod 2, damping ring 3, the first floating ring 4, wavy spring 5, overhead cam 6 etc.
Part.Overhead cam 6 is arranged on the shaft shoulder outside piston rod 2, and the lower end of overhead cam 6 inside contracts, make overhead cam 6 and outer barrel 11 it
Between form the second gap, spill port 14 is opened up on overhead cam 6.To prevent the axial displacement of overhead cam 6, it is provided with piston rod 2
Damping ring 3, upper support 1.Upper support 1 is symmetrical open architecture, and upper support 1 is fixed on piston rod 2 by collar 13.Damping
Ring 3 is enclosed on piston rod 2, and opposing pistons bar 2 positions, and the second through hole 16 is provided with the corresponding damping ring 3 of piston rod 2.Damping ring 3
On be designed with third through-hole 17, determine the damping area of positive stroke oil back chamber.The spacing sky of structure of damping ring 3 and overhead cam 6
Interior to be designed with the first floating ring 4, the first floating ring 4 together decides on the damping area of oil back chamber revesal with damping ring 3.First
Wavy spring 5 is designed with below floating ring 4, wavy spring 5 is designed with certain precompression.Upper support 1, damping ring 3, first are floating
Rotating ring 4 and wavy spring 5 move up and down by the way that structure is spacing with piston rod 2.The precompression of wavy spring 5 gives the first floating ring 4
One lasting power axially upwards, during positive stroke, hydraulic shock power overcomes the precompression of wavy spring 5 by the first floating ring 4
Push open, fluid crosses pasta product increase, and fluid flows back to oil back chamber, and wavy spring 5 utilizes its precompression by first after the completion of positive stroke
Floating ring 4 resets, even if the first floating ring 4 is attached on damping ring 3, reduces the pasta product of crossing of third through-hole 17, so as to adjust
The fluid of oil back chamber crosses pasta product.
Plunger assembly, which includes part, the one end of plunger 12 such as plunger 12, positive stroke orifice valve 9, the second floating ring 10, to be fixed
The blind end of outer barrel 11 is installed on, the other end of plunger 12 sets the second open cavity and inserted in the first open cavity of piston rod 2,
Third space is left between the inwall of plunger 12 and piston rod 2.Plunger 12 is internally formed the second open cavity, positive stroke orifice valve
9 are arranged at the opening of the second open cavity, and just stroke orifice valve 9 uses pin stop after being connected through a screw thread with plunger 12, just
Multiple fourth holes 18 are provided among the end face of stroke orifice valve 9.The lower end of plunger 12 is provided with boss, and the second floating ring 10 is installed
At the space that the land areas of plunger 12 and positive stroke orifice valve 9 are formed, therefore the second floating ring 10 can produce in this space
Movement vertically, the second floating ring 10 is attached on the end face of plunger 12, or leave the distance of end face one of plunger 12, so as to
Control the area of orifice of the positive and negative stroke of main oil pocket.Plunger assembly is fixed on after adjusting to correct position by nut, check washer
On outer barrel 11.
Operation principle of the present invention is：As shown in Fig. 2 piston rod 2 moves upwards in the presence of aircraft shock loading, make back
The volume of the volume increase of oil pocket III, air cavity I and main oil pocket II reduces.Fluid in main oil pocket II pours in through fourth hole 18
Air cavity I, the nitrogen in air cavity I are pressurized, and the fluid in air cavity I flows into oil back chamber III.As shown in figure 3, piston rod 2 is compressed to necessarily
After stroke, nitrogen pressure is more than the external applied load suffered by undercarriage, and 11 upward resilience of outer barrel, air cavity I and the volume of main oil pocket II increase
Greatly, the volume-diminished of oil back chamber III, the fluid of oil back chamber III flow into air cavity I, and the fluid of air cavity I flows into main oil pocket II, carried out next
Secondary cushion stroke.
As shown in Figure 2 and Figure 3, the positive stroke damping hole sectional area of main oil pocket II is S1, i.e., the positive upper surface of stroke orifice valve 9
8 fourth holes 18 of circumference array cross pasta product.The revesal damping hole sectional area of main oil pocket II is S2, i.e., positive stroke resistance
The product of pasta excessively of 8 fourth holes 18 of the upper surface circumference array of Buddhist nun's valve 9 adds is not floated at the 3 of plunger 12 at boss by second
The pasta of crossing that ring 10 blocks passage accumulates（The area of dash area in Fig. 4）.The positive stroke damping hole sectional area of oil back chamber is S3, that is, hinder
12 third through-holes 17 of the circumference array on Buddhist nun's ring 3 cross pasta product.The revesal damping hole sectional area of oil back chamber III is S4, i.e.,
12 third through-holes 17 of the circumference array on damping ring 3 do not cross pasta product by what the first floating ring 4 covered.This four kinds of damping holes
The magnitude relationship of sectional area is：S3﹥ S2﹥ S4﹥ S1。
Specifically, as shown in Figures 2 and 3, during aircraft landing, i.e. positive stroke, piston rod 2 in the presence of impulsive force to
Upper compression, the fluid of main oil pocket II flow into air cavity I, and Oil shocking power makes the second floating ring 10 be attached on the end face of plunger 12, just
The third space of the both sides of stroke orifice valve 9（Edge oil circuit）Be plugged, the area of the fourth hole 18 on positive stroke orifice valve 9 and
For the positive stroke damping hole sectional area S of main oil pocket1.In the presence of Oil shocking power, the first floating ring 4 disengages with damping ring 3, gas
Spill port 14 on third through-hole 17 and overhead cam 6 of the fluid of chamber I through the gross area of damping ring 3 flows into oil back chamber III, damping ring 3
The sectional area sum of third through-hole 17 be the positive stroke damping hole sectional area S of oil back chamber3.Fluid rubs life when flowing through each through hole
Heat loss impact energy, the nitrogen of air cavity I absorb part impact energy when compressed.The main positive stroke damping hole sectional area of oil pocket
S1The positive stroke damping hole sectional area S of ﹤ oil back chambers3, the fourth hole 18 on positive stroke orifice valve 9 plays main damping action, met
Fall the actual conditions of frame buffer medium stress compression, be advantageous to fall the quick consumption of shake energy.
After piston rod 2 is compressed to certain stroke, i.e., revesal when, outer barrel 11 starts back in the presence of nitrogen pressure
Bullet, the fluid in oil back chamber flows back to air cavity through the spill port 14 on overhead cam 6, the third through-hole 17 on damping ring 3, in waveform bullet
Under the precompression of spring 5 and the percussion of high speed fluid, the first floating ring 4 is adjacent to damping ring 3, covers the part of damping ring 3
Third through-hole 17 crosses pasta product, and the area of unmasked portion is oil back chamber revesal damping hole sectional area S4.Meanwhile air cavity
Fluid flows back to main oil pocket, and due to gravity and Oil shocking power, the second floating ring 10 is attached on the end face of plunger 12, but second floats
Ring 10 does not cover the passage of whole third spaces, the area of non-area coverage and the fourth hole 18 on positive stroke orifice valve 9 and
For main oil pocket revesal damping hole sectional area S2.Main oil pocket revesal damping hole sectional area S2﹥ oil back chamber revesal damping holes section
Product S4, the main damping action of oil back chamber revesal damping hole, main oil pocket revesal damping hole mainly plays oil return, due to S2﹥
S1, make revesal fluid that the fluid of equal volume be returned into main oil pocket within the relatively short time, in case next buffering punching
Journey.
Claims (6)
1. a kind of undercarriage buffer, including outer barrel component, piston rod assembly and plunger assembly, it is characterised in that：
The outer barrel component includes outer barrel（11）With the lower cam for being arranged at outer barrel openend（8）, the upper end of the lower cam inside contracts, made
The first gap is formed between lower cam and outer barrel；
The piston rod assembly includes the piston rod that one end carries the first open cavity（2）, the piston rod carry the first open cavity one
End is sheathed in outer barrel component and formed with outer barrel component and closed, and overhead cam is set on the outside shaft shoulder of the piston rod（6）, it is convex
The lower end of wheel is inside contracted, and makes to form the second gap between lower cam and outer barrel, and the overhead cam upper end order fixation outside piston rod is set
Put damping ring（3）With upper support（1）, and formed and closed between support and outer barrel on this；
The plunger assembly includes the plunger that outer barrel blind end is fixed in one end（12）, the other end the second open cavity of setting of the plunger
And in the first open cavity of insertion piston rod, third space, the second open cavity of plunger are left between plunger and piston rod inwall
Opening positive stroke orifice valve is fixedly installed（9）, it is provided for being turned on and off between positive the stroke orifice valve and plunger
Second floating ring in three gaps（10）；
So, the outer tube inner chamber above overhead cam and floating ring forms air cavity（Ⅰ）, the first open cavity shape below the first floating ring
Into main oil pocket（Ⅱ）, first and second gap between upper and lower cam merges to form oil back chamber（Ⅲ）；
Spill port is set on the overhead cam（14）, multiple first through hole are set on the second open cavity of plunger（15）, in face of damping
Multiple second through holes are set on the piston rod of ring（16）, third through-hole is opened up on damping ring（17）, first, second and third through hole is connected
It is logical to form oily passage, and the excessively oily passage is provided with can adjust the adjustment component that oily passage crosses pasta product.
2. a kind of undercarriage buffer according to claim 1, it is characterised in that the adjustment component sets for order
The wavy spring being placed in above overhead cam（5）With the first floating ring（4）, and the wavy spring has a precompression.
3. a kind of undercarriage buffer according to claim 1, it is characterised in that the openend of the outer barrel is set
Cap nut（7）.
4. a kind of undercarriage buffer according to claim 1, it is characterised in that the upper support is symmetrical open type
Structure, and outer support passes through collar（13）Fix on the piston rod.
A kind of 5. undercarriage buffer according to claim 1, it is characterised in that the positive stroke orifice valve（9）
With plunger（12）Fixed after being connected through a screw thread with pin.
6. a kind of undercarriage buffer according to claim 1, it is characterised in that the plunger passes through nut, anti-
Loose pad is fixed on outer barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710806253.1A CN107339360B (en) | 2017-09-08 | 2017-09-08 | A kind of undercarriage buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710806253.1A CN107339360B (en) | 2017-09-08 | 2017-09-08 | A kind of undercarriage buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107339360A true CN107339360A (en) | 2017-11-10 |
| CN107339360B CN107339360B (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710806253.1A Active CN107339360B (en) | 2017-09-08 | 2017-09-08 | A kind of undercarriage buffer |
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| CN108036006A (en) * | 2017-12-13 | 2018-05-15 | 陕西宝成航空仪表有限责任公司 | Cylinder with buffering protection function |
| CN108488296A (en) * | 2018-03-21 | 2018-09-04 | 武汉船用机械有限责任公司 | A kind of hydraulic bjuffer |
| CN108644287A (en) * | 2018-08-03 | 2018-10-12 | 喻建中 | A kind of straight barrel type front damper with high performance |
| CN108869622A (en) * | 2018-07-24 | 2018-11-23 | 广东机电职业技术学院 | A kind of plunger type buffer unit |
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| CN109319099A (en) * | 2018-11-29 | 2019-02-12 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of extended travel change oilhole undercarriage buffer |
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| CN116985991A (en) * | 2023-09-25 | 2023-11-03 | 中国飞机强度研究所 | Oil-hole-variable aircraft landing gear buffer and buffering method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517714A (en) * | 1978-07-20 | 1980-02-07 | Tokico Ltd | Hydraulic shock absorber |
| CN1082153A (en) * | 1993-03-06 | 1994-02-16 | 周祖华 | Hydraulically controlled pneumatic elastic jackstay |
| CN2314151Y (en) * | 1997-12-08 | 1999-04-14 | 胡建新 | High and low pressure pivotally controlling vibration absorber |
| CN102003493A (en) * | 2009-08-28 | 2011-04-06 | 艾勒根传动工程有限责任公司 | Torsional vibration damper |
| CN102506116A (en) * | 2011-11-03 | 2012-06-20 | 中航飞机起落架有限责任公司 | Oil vapor damping device |
| CN202790291U (en) * | 2012-07-18 | 2013-03-13 | 宁波南方减震器制造有限公司 | Double-cylinder high-pressure shock absorber with floating piston assembly |
-
2017
- 2017-09-08 CN CN201710806253.1A patent/CN107339360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517714A (en) * | 1978-07-20 | 1980-02-07 | Tokico Ltd | Hydraulic shock absorber |
| CN1082153A (en) * | 1993-03-06 | 1994-02-16 | 周祖华 | Hydraulically controlled pneumatic elastic jackstay |
| CN2314151Y (en) * | 1997-12-08 | 1999-04-14 | 胡建新 | High and low pressure pivotally controlling vibration absorber |
| CN102003493A (en) * | 2009-08-28 | 2011-04-06 | 艾勒根传动工程有限责任公司 | Torsional vibration damper |
| CN102506116A (en) * | 2011-11-03 | 2012-06-20 | 中航飞机起落架有限责任公司 | Oil vapor damping device |
| CN202790291U (en) * | 2012-07-18 | 2013-03-13 | 宁波南方减震器制造有限公司 | Double-cylinder high-pressure shock absorber with floating piston assembly |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036006A (en) * | 2017-12-13 | 2018-05-15 | 陕西宝成航空仪表有限责任公司 | Cylinder with buffering protection function |
| CN109957919A (en) * | 2017-12-26 | 2019-07-02 | 青岛胶南海尔洗衣机有限公司 | Damper and device for clothing processing including the damper |
| CN109957920A (en) * | 2017-12-26 | 2019-07-02 | 青岛胶南海尔洗衣机有限公司 | Damper and device for clothing processing including the damper |
| CN109957920B (en) * | 2017-12-26 | 2021-11-09 | 青岛胶南海尔洗衣机有限公司 | Damper and laundry treating apparatus including the same |
| CN109957919B (en) * | 2017-12-26 | 2021-12-03 | 青岛胶南海尔洗衣机有限公司 | Damper and laundry treating apparatus including the same |
| CN109957921A (en) * | 2017-12-26 | 2019-07-02 | 青岛胶南海尔洗衣机有限公司 | Damper and device for clothing processing including the damper |
| CN109957922B (en) * | 2017-12-26 | 2021-10-29 | 青岛胶南海尔洗衣机有限公司 | Damper and laundry treating apparatus including the same |
| CN109957922A (en) * | 2017-12-26 | 2019-07-02 | 青岛胶南海尔洗衣机有限公司 | Damper and device for clothing processing including the damper |
| CN109990034B (en) * | 2017-12-29 | 2024-04-02 | 邱燕端 | Three-section controllable gas spring |
| CN109990034A (en) * | 2017-12-29 | 2019-07-09 | 邱燕端 | A kind of three section controllable gas springs |
| CN108488296A (en) * | 2018-03-21 | 2018-09-04 | 武汉船用机械有限责任公司 | A kind of hydraulic bjuffer |
| CN108869622B (en) * | 2018-07-24 | 2023-05-23 | 广东机电职业技术学院 | Plunger type buffer device |
| CN108869622A (en) * | 2018-07-24 | 2018-11-23 | 广东机电职业技术学院 | A kind of plunger type buffer unit |
| CN109018436A (en) * | 2018-08-02 | 2018-12-18 | 中国人民解放军国防科技大学 | Extraterrestrial celestial globe ground approaching aircraft frame system and aircraft |
| CN108644287A (en) * | 2018-08-03 | 2018-10-12 | 喻建中 | A kind of straight barrel type front damper with high performance |
| CN109334957A (en) * | 2018-11-29 | 2019-02-15 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of lower portion connecting structure of undercarriage buffer |
| CN109319099B (en) * | 2018-11-29 | 2021-07-09 | 中国航空工业集团公司沈阳飞机设计研究所 | Extension stroke becomes oilhole undercarriage buffer |
| CN109319099A (en) * | 2018-11-29 | 2019-02-12 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of extended travel change oilhole undercarriage buffer |
| CN109747816A (en) * | 2019-01-10 | 2019-05-14 | 南京航空航天大学 | A kind of undercarriage for longitudinally buffeting vibration absorber with oil gas buffer-type |
| CN109747816B (en) * | 2019-01-10 | 2024-04-12 | 南京航空航天大学 | Undercarriage with oil-gas buffer type longitudinal buffeting vibration damper |
| CN113483105A (en) * | 2021-08-04 | 2021-10-08 | 西安航天动力研究所 | Inlet pressure self-driven slowly-closed slowly-opened stop valve |
| CN113483105B (en) * | 2021-08-04 | 2022-07-05 | 西安航天动力研究所 | Inlet pressure self-driven slow-closing slow-opening type stop valve |
| CN114135616A (en) * | 2021-12-17 | 2022-03-04 | 江西洪都航空工业集团有限责任公司 | Load buffer structure with rebound damping |
| CN116985991A (en) * | 2023-09-25 | 2023-11-03 | 中国飞机强度研究所 | Oil-hole-variable aircraft landing gear buffer and buffering method thereof |
| CN116985991B (en) * | 2023-09-25 | 2023-12-15 | 中国飞机强度研究所 | Oil-hole-variable aircraft landing gear buffer and buffering method thereof |
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| CN107339360B (en) | 2018-11-30 |
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