CN106352005B - A kind of oil-gas separated-type buffer and its method for exhausting - Google Patents
A kind of oil-gas separated-type buffer and its method for exhausting Download PDFInfo
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- CN106352005B CN106352005B CN201611055504.9A CN201611055504A CN106352005B CN 106352005 B CN106352005 B CN 106352005B CN 201611055504 A CN201611055504 A CN 201611055504A CN 106352005 B CN106352005 B CN 106352005B
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- Prior art keywords
- oil
- plunger
- outer barrel
- filled
- oil pocket
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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
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/061—Mono-tubular units
-
- 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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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 oil-gas separated-type buffer and its method for exhausting.The oil-gas separated-type buffer includes outer barrel, the plunger being arranged in outer barrel, and the upper support being arranged in outer barrel bottom；The top of the plunger is stretched out relative to outer barrel, and damping hole is provided with the top of the upper support, and the outer barrel is divided into the first oil pocket in plunger and the second oil pocket between plunger and outer barrel by plunger, and first oil pocket is connected with the second oil pocket by damping hole；The plunger head is provided with the oil-filled hole connected with the first oil pocket, be provided with the oil-filled hole side wall of the plunger keep oil-filled hole to be connected with the second oil pocket when oil-filled, fill after keep oil-filled hole and steam vent that the second oil pocket separates.The present invention makes buffer oil intracavity gas thoroughly discharge, so that buffer stable work in work.
Description
Technical field
The present invention relates to a kind of oil-gas separated-type buffer and its method for exhausting, belongs to aviation undercarriage field.
Background technology
Current most undercarriage all uses oil-gas type buffer.The indoor design of oil-gas type buffer exists always
Among improving and developing.In order to improve the energy-absorbing capacity of undercarriage buffer, reduce undercarriage landing, especially ground and slide
Row and manipulate when dynamic load, designer develop single-stage bicavate buffer (exist in a buffer low pressure with
Two air chambers of high pressure), and increase spring control choke valve in the damper leg piston of bicavate device, make in given load
Valve will be opened, so as to improve the shock-absorbing capacity of damper leg.
However, there is oil pocket exhaust hardly possible or can not discharge the problems such as clean, the row of commonly using in existing oil-gas separated-type buffer
Gas method frequently with it is oil-filled stand, it is oil-filled when tension and compression piston rod etc., these method operating efficiencies and enforcement difficulty are all very big, and
Gas is discharged into a kind of clean all highly difficult, single-chamber oil-gas type as disclosed in Chinese utility model patent CN201420188348.3
Big work(amount undercarriage buffer.Should be that fluid flows through damping hole and absorbs energy if pure oil pocket gas row is not thorough, when having
During gas, damping can be greatly reduced when bubble passes through damping hole, can influence to buffer efficiency, meanwhile, if pure oil pocket is vented
Design unreasonable, buffer hydraulic damping can be influenceed and influence the work(energy absorption capability of buffer.Die cavity is answered inside buffer
When miscellaneous, when fluid chamber is made up of multiple annular chambers etc., by long-time stand exhaust and buffer break-in can not effectively by
Oil pocket gas is discharged, and not only influences the performance of buffer, and greatly reduces the dress examination operating efficiency of buffer.
The content of the invention
The present invention is intended to provide a kind of oil-gas separated-type buffer and its method for exhausting, the buffer can make buffer oily
Intracavity gas are thoroughly discharged, so that buffer stable work in work.Further, buffer structure of the invention is simple,
It is easy to operate.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of oil-gas separated-type buffer, including outer barrel, the plunger being arranged in outer barrel, and be arranged in outer barrel bottom
Upper support；The top of the plunger is stretched out relative to outer barrel, damping hole is provided with the top of the upper support, the outer barrel is by post
Plug is divided into the first oil pocket in plunger and the second oil pocket between plunger and outer barrel, first oil pocket and the second oil pocket
Connected by damping hole；It is structurally characterized in that the plunger head is provided with the oil-filled hole connected with the first oil pocket, the plunger
Be provided with oil-filled hole side wall when oil-filled keep oil-filled hole to be connected with the second oil pocket, fill after keep oil-filled hole and the second oil
The steam vent of chamber cut-off.
The present invention dexterously have chosen the position of opening of steam vent, keep filling by mobile plunger, during so as to realize oil-filled
Keep oil-filled hole and the second oil pocket to separate after oilhole and the connection of the second oil pocket, filling, while exhaust, do not influence to buffer
The hydraulic damping parameter of device.The present invention realizes buffer fluid by setting the front and rear position for changing steam vent of steam vent, filling
The discharge of chamber gas.The inventive method is simple in construction, can efficiently exclude the gas of buffer oil pocket, avoid oil pocket gas pair
The influence of shock-absorbing capacity.
According to an embodiment of the invention, further optimization can also be made to the present invention, below the skill to be formed after optimization
Art scheme：
In order to ensure the sealing effectiveness between outer barrel and plunger, sealing ring is provided between the outer barrel and plunger.
During in order to better ensure that oil-filled oil-filled hole connected with the second oil pocket, fill after keep oil-filled hole and second oil
Chamber separates, and is provided with gap between the sealing ring and outer barrel bottom inner face of the plunger head, the gap makes steam vent not outer
Cylinder blocks, and the gap is less than the stroke that plunger can move up.
As a kind of specific adjustment structure form, the top of the plunger is locked by nut at the top of cylinder outside, the post
Plug can be moved by nut driving axial；Gap between sealing ring and outer barrel the bottom inner face be less than nut lower surface with
The distance between Gewindefreistiche end face of plunger.
Preferably, the bottom of the outer barrel is built with lower support, the upper support and lower supports for supporting hollow work
Stopper rod, the piston is built with floating piston；Piston rod cut-off is divided into oil pocket and air cavity by the floating piston.Further,
The filling valve for being used for inflating to air cavity is housed on the piston rod.
In order to ensure the sealing of oil pocket after oil-filled, blocking cap is housed at the top of the oil-filled hole of the plunger.
Based on same inventive concept, present invention also offers a kind of exhaust side of described oil-gas separated-type buffer
Method, it comprises the following steps：
S1, it is oil-filled before, move down plunger, steam vent is not blocked；
S2, it is oil-filled when fluid be filled with from oil-filled hole in the first oil pocket, when oil level be charged to it is upper support inner face when, first oil
The oil of intracavitary enters the second oil pocket by damping hole, the air in the second oil pocket by the discharge of steam vent, up to the first oil pocket,
Second oil pocket is completely filled with oil；
After the completion of S3, filling, making plunger, each movement for several times, will be remained at the inner bore chamfering of outer barrel upper end up and down
Gas passes through steam vent（16 discharges；
S4, plunger is set to move up and so that steam vent is separated.
The top of the plunger is locked by nut at the top of cylinder outside, in step S1, unscrews the nut on plunger
Fixed button number, plunger move down；In step S4, the button number of nut fixation is tightened, plunger moves up.
It is provided with sealing ring between the outer barrel and plunger, in step S4, is bonded between sealing ring and outer barrel bottom inner face
And steam vent is separated.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention can efficiently exclude the gas of buffer oil pocket,
Influence of the oil pocket gas to shock-absorbing capacity is avoided, there is extensive directive significance to buffer structure design.
The present invention can conveniently and efficiently solve existing oil-gas separated-type buffer oil pocket exhausting problem, ensure buffer oil pocket
Gas is completely exhausted out, and makes buffer working stability, performance efficiency.
Brief description of the drawings
Fig. 1 is the schematic diagram that Oil-gas Separation buffer of the present invention filling is completed；
Fig. 2 is Fig. 1 tops close-up schematic view；
Fig. 3 is schematic diagram when Oil-gas Separation buffer of the present invention is oil-filled；
Fig. 4 is Fig. 3 tops close-up schematic view.
In figure：
1- blocking caps, 2- nuts, 3- outer barrels, 4- sealing rings, 5- plungers, support on 6-, supported under 7-, 8- floating pistons, 9-
Piston rod, 10- filling valve；The oil pockets of 11- first；The oil pockets of 12- second；13- air cavitys；14- damping holes；The oil-filled holes of 15-；16- is arranged
Stomata；17- outer barrels bottom inner face.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention can be mutually combined.For sake of convenience, hereinafter as occurred
" on ", " under ", "left", "right" printed words, only represent that the upper and lower, left and right direction with accompanying drawing in itself is consistent, do not act limiting to structure
It is set for using.
A kind of oil-gas separated-type buffer, as shown in figs. 1 and 3, including outer barrel 3, plunger 5, nut 2, blocking cap 1, sealing ring
4th, upper support 6, lower support 7, floating piston 8, piston rod 9, filling valve 10 and associated seal.Buffered based on oil-gas separated-type
Device its it is oil-filled when the gas in oil pocket can be discharged in time clean, it, which is filled, completes final vacuum and can seal, and does not interfere with hydraulic pressure resistance
Buddhist nun.
As shown in Figure 2, Figure 4 shows, top offers oil-filled hole 15 along axis on plunger 5, while in the top axis of plunger 5
Less steam vent 16 is made in vertical direction.
Such as Fig. 3, Fig. 4, when buffer is oil-filled, the sealing ring 4 at the top of plunger 5 should have gap with the bottom inner face of outer barrel 3, should
Gap can guarantee that steam vent 16 is not blocked, and less than the distance of the end face of nut 2 and the end face of the Gewindefreistiche of plunger 5.
As shown in Figure 1, Figure 2, after the completion of buffer filling, the end face of sealing ring 4 and the bottom inner face of outer barrel 3 at the top of plunger 5 should
Fitting, and the steam vent 16 on plunger 5 is in inside the upper mounting holes of outer barrel 3.
The specific steps of exhausting of oil-gas separated-type buffer is as follows：
1）In implementation process, when oil-filled, the button number that the nut 2 unscrewed on plunger 5 is fixed is first passed through, makes to reach post
Steam vent 16 on plug 5 exposes the diameter of steam vent 16 of the bottom end face of outer barrel 3 about half, and the upper end inner port edge of outer barrel 3 falls
The enough steam vents 16 in angle are overall to be exposed；As shown in figure 4, steam vent 16 is not blocked completely；
2）Fluid is filled with the first oil pocket 11 from oil-filled hole 15 when oil-filled, when oil level is charged to 6 inner face of upper support, first
Oil in oil pocket 11 enters the second oil pocket 12 by damping hole, and the air in the second oil pocket 12 is by the discharge of steam vent 16, directly
Oil is completely filled with to the first oil pocket 11, the second oil pocket 12；
3）After the completion of filling, plunger 5 is moved up and down for several times, it is a small amount of to remain in the upper end inner bore chamfering of outer barrel 3 during this
Gas can discharge；
4）The nut 2 on plunger 5 is tightened, now, there is gap the end face of nut 2 and the end face of the line escape of plunger spiral shell 5, so
It is ensured that the sealing ring 4 at the top of plunger 5 is bonded completely with the bottom inner face of outer barrel 3, as shown in Figure 2；Make connection oil gas A and oil
Gas B steam vent 16 is sealed by sealing ring 4, so as to not influence the hydraulic damping parameter of buffer.
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the present invention, after the present invention has been read, the various equivalent form of values of the those skilled in the art to the present invention
Modification each fall within the application appended claims limited range.
Claims (10)
1. a kind of oil-gas separated-type buffer, including outer barrel（3）, it is arranged on outer barrel（3）Interior plunger（5）, and be arranged on outer
Cylinder（3）Upper support in bottom（6）；
The plunger（5）Top relative to outer barrel（3）Stretch out, the upper support（6）Top be provided with damping hole（14）, it is described
Outer barrel（3）By plunger（5）It is divided into and is located at plunger（5）The first interior oil pocket（11）With positioned at plunger（5）With outer barrel（3）Between
Two oil pockets（12）, first oil pocket（11）With the second oil pocket（12）Pass through damping hole（14）Connection；It is characterized in that：
The plunger（5）Top is provided with and the first oil pocket（11）The oil-filled hole of connection（15）, the plunger（5）Oil-filled hole（15）
It is provided with side wall when oil-filled and keeps oil-filled hole（15）With the second oil pocket（12）Oil-filled hole is kept after connection, filling（15）With
Second oil pocket（12）The steam vent of cut-off（16）.
2. oil-gas separated-type buffer according to claim 1, it is characterised in that the outer barrel（3）With plunger（5）Between
Provided with sealing ring（4）.
3. oil-gas separated-type buffer according to claim 2, it is characterised in that the plunger（5）The sealing ring at top
（4）With outer barrel（3）Bottom inner face（17）Between be provided with gap, the gap makes steam vent（16）Not by outer barrel（3）Block, and should
Gap is less than plunger（5）The stroke that can be moved up.
4. oil-gas separated-type buffer according to claim 3, it is characterised in that the plunger（5）Top pass through spiral shell
It is female（2）Locking is in outer barrel（3）Top, the plunger（5）It can be moved by nut driving axial；The sealing ring（4）With outer barrel（3）
Bottom inner face（17）Between gap be less than nut（2）Lower surface and plunger（5）The distance between Gewindefreistiche end face.
5. the oil-gas separated-type buffer according to any one of claim 1-4, it is characterised in that the outer barrel（3）'s
Bottom is built with lower support（7）, the upper support（6）With lower support（7）For supporting hollow piston rod（9）, the piston（9）
Built with floating piston（8）；The floating piston（8）By piston rod（9）Cut-off is divided into oil pocket and air cavity（13）.
6. oil-gas separated-type buffer according to claim 5, it is characterised in that the piston rod（9）Upper be equipped with is used for
To air cavity（13）The filling valve of inflation（10）.
7. the oil-gas separated-type buffer according to any one of claim 1-4, it is characterised in that the plunger（5）'s
Oil-filled hole（15）Top is equipped with blocking cap（1）.
8. the method for exhausting of a kind of oil-gas separated-type buffer as described in one of claim 1-7, it is characterised in that including such as
Lower step：
S1, it is oil-filled before, move down plunger（5）, make steam vent（16）It is not blocked；
S2, it is oil-filled when fluid from oil-filled hole（15）It is filled with the first oil pocket（11）It is interior, when oil level is charged to upper support（6）Inner face
When, the first oil pocket（11）Interior oil passes through damping hole（14）Into the second oil pocket（12）, the second oil pocket（12）In air pass through
Steam vent（16）Discharge, until the first oil pocket（11）, the second oil pocket（12）It is completely filled with oil；
After the completion of S3, filling, make plunger（5）Each movement for several times, will remain in outer barrel up and down（3）At the inner bore chamfering of upper end
Gas pass through steam vent（16）Discharge；
S4, make plunger（5）Move up and cause steam vent（16）Separated.
9. the method for exhausting of oil-gas separated-type buffer according to claim 8, it is characterised in that the plunger（5）'s
Top passes through nut（2）Locking is in outer barrel（3）Top, in step S1, unscrew installed in plunger（5）On nut（2）Fixed
Detain number, plunger（5）Move down；In step S4, nut is tightened（2）Fixed button number, plunger（5）Move up.
10. the method for exhausting of oil-gas separated-type buffer according to claim 8, it is characterised in that the outer barrel（3）With
Plunger（5）Between be provided with sealing ring（4）, in step S4, sealing ring（4）With outer barrel（3）Bottom inner face（17）Between be bonded and
By steam vent（16）Cut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611055504.9A CN106352005B (en) | 2016-11-25 | 2016-11-25 | A kind of oil-gas separated-type buffer and its method for exhausting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611055504.9A CN106352005B (en) | 2016-11-25 | 2016-11-25 | A kind of oil-gas separated-type buffer and its method for exhausting |
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| Publication Number | Publication Date |
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| CN106352005A CN106352005A (en) | 2017-01-25 |
| CN106352005B true CN106352005B (en) | 2018-02-27 |
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| CN201611055504.9A Active CN106352005B (en) | 2016-11-25 | 2016-11-25 | A kind of oil-gas separated-type buffer and its method for exhausting |
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| CN112744365B (en) * | 2021-02-25 | 2022-10-28 | 北京精密机电控制设备研究所 | Method for guaranteeing consistency of damping characteristics of shimmy damper of aircraft landing gear system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2530096Y (en) * | 2002-01-31 | 2003-01-08 | 嘉兴嘉嘉汽车零部件制造有限公司 | Dual-drum inflating vibration damper |
| JP2009024726A (en) * | 2007-07-17 | 2009-02-05 | Kayaba Ind Co Ltd | Pneumatic shock absorber |
| CN201202762Y (en) * | 2008-05-12 | 2009-03-04 | 浙江正裕工业有限公司 | Bumper absorber with nine-shift adjustable mechanism |
| JP5961130B2 (en) * | 2013-03-22 | 2016-08-02 | Ｋｙｂ株式会社 | Shock absorber |
| JP6239921B2 (en) * | 2013-10-03 | 2017-11-29 | Ｋｙｂ株式会社 | Hydraulic buffer |
| CN204004134U (en) * | 2014-04-17 | 2014-12-10 | 中国航空工业集团公司沈阳飞机设计研究所 | The large merit amount of a kind of single chamber oil-gas type undercarriage buffer |
| CN204175698U (en) * | 2014-08-27 | 2015-02-25 | 华中科技大学无锡研究院 | The bilaterally adjustable Quick cylinder of a kind of ouput force |
| CN204784383U (en) * | 2015-05-25 | 2015-11-18 | 宁波美亚达汽车部件制造有限公司 | A oil gas combination shock absorber for weighing card driver's cabin |
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Effective date of registration: 20190604 Address after: 333001 Jingdezhen Aviation Road 6-8, Jiangxi Province Patentee after: China Helicopter Research and Development Institute Address before: 410200 Airway of Wangcheng Economic Development Zone, Changsha City, Hunan Province Patentee before: AVIC Landing Gear Advanced Manufacturing Corp. |