CN106704452A - Loss-preventing shock absorber - Google Patents
Loss-preventing shock absorber Download PDFInfo
- Publication number
- CN106704452A CN106704452A CN201510785323.0A CN201510785323A CN106704452A CN 106704452 A CN106704452 A CN 106704452A CN 201510785323 A CN201510785323 A CN 201510785323A CN 106704452 A CN106704452 A CN 106704452A
- Authority
- CN
- China
- Prior art keywords
- outer cylinder
- inner barrel
- cylinder body
- spring
- damping
- 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
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
- B64C25/58—Arrangements or adaptations of shock-absorbers or springs
- B64C25/62—Spring shock-absorbers; Springs
- B64C25/64—Spring shock-absorbers; Springs using rubber or like elements
-
- 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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
-
- 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
- F16F2230/00—Purpose; Design features
- F16F2230/0023—Purpose; Design features protective
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a loss-preventing shock absorber. The upper end of an outer cylinder is sealed, the lower end of the outer cylinder is opened, the upper end of an inner cylinder is opened, and the lower end of the inner cylinder is closed. A floating piston and a spring are arranged in the inner cylinder, one end of the spring is connected with the floating piston, and the other end of the spring is connected with the inner surface of the bottom of the inner cylinder. The spring is wrapped by an elastic rubber pillar. A damping body is arranged on the top of the inner cylinder. A damping hole is formed in the damping body. The inner cylinder is arranged in the outer cylinder in a sliding manner. The loss-preventing shock absorber further comprises a protection sleeve arranged on the outer circle face of the outer cylinder in a sleeving manner, and the part between the inner surface of the protection sleeve and the outer surface of the outer cylinder is filled with sand grains. The loss-preventing shock absorber further comprises a one-way valve arranged on the damping body and is outwards conducted from the inner cylinder. According to the loss-preventing shock absorber, the protection sleeve and the sand grains are adopted for forming the multiple layers of protection, and the outer cylinder can be effectively prevented from being impacted and cracked by external objects.
Description
Technical field
The present invention relates to aircraft field, more particularly to a kind of bradyseism device for aircraft landing gear.
Background technology
Undercarriage is the special arrangement for taking off landing.During aircraft landing, always with certain speed impacts ground, undercarriage bears and slows down this shock, so as to mitigate the stand under load of aircraft.The critical component that undercarriage slows down this bump stroke is exactly bradyseism device.If the design of bradyseism device is unreasonable, will cause that aircraft bears bigger load, cause airplane design weight to improve.If bradyseism device breaks down, aircraft hard landing will be caused, airframe structure is destroyed, or even fatal crass occurs.
Existing bradyseism device uses air-fuel mixture formula structure, and it is the disadvantage is that, air cavity is susceptible to leakage.Once air cavity is leaked, the buffering effect of bradyseism device will significantly weaken, and bradyseism device cannot return.Weaker buffering effect will be in aircraft landing, and undercarriage disappears with ground first time collision rift.
The oil pocket cavity wall of existing bradyseism device can bear great pressure, and such as bradyseism device is operationally clashed into by exterior object, and oil pocket cavity wall easily ruptures, oil liquid leakage, ultimately results in bradyseism device and thoroughly fails.
The content of the invention
It is to overcome the deficiencies in the prior art that the purpose of the present invention is, there is provided a kind of loss prevention bradyseism device.
The purpose of the present invention is achieved through the following technical solutions：
Loss prevention bradyseism device, including inner barrel, outer cylinder body, floating piston, damping body and spring；Outer cylinder body upper end closed, outer cylinder body lower end opens, and inner barrel upper end opens, inner barrel lower end closed；Floating piston and spring are arranged in inner barrel, and one end of spring is connected with floating piston, and the other end of spring is connected with the bottom interior surface of inner barrel；Spring outer wrapping elastic rubber column, the internal diameter of the diameter less than inner barrel of elastic rubber column；Damping body is arranged at the top of inner barrel, and damping hole is offered on damping body；Inner barrel is slideably positioned in outer cylinder body, and the space between inner barrel top and outer cylinder body top constitutes oil pressure space；Space in inner barrel between floating piston and damping body constitutes slow pressure space；Also include being placed on the protective case of outer cylinder body periphery, the grains of sand are full of between the inner surface of protective case and the outer surface of outer cylinder body；Also include the check valve being arranged on damping body, check valve is outwards turned on by inner barrel.
Fluid is full of in oil pressure space, when being extruded by external force, inner barrel does compression motion relative to outer cylinder body, fluid can now produce damping so as to absorb partial capability during aircraft landing by the damping hole on damping body.After fluid enters slow pressure space, floating piston compression spring, further absorbability are promoted.After external force disappearance, spring promotes floating piston, floating piston that the fluid in slow pressure space is pushed back into oil pressure space, and the fluid in oil pressure space promotes inner barrel, inner barrel is done stretching exercise relative to outer cylinder body, so realizes the return of bradyseism device.
Check valve is set so that the fluid in slow pressure space can faster be pushed back oil pressure space, realize returning quickly.
The present invention substitutes the air in inner barrel using spring, it is to avoid air leakage cause the buffering effect of bradyseism device will significantly weaken and bradyseism device cannot return problem.
Spring is easily damaged in excess compression, and the elastic rubber column of parcel spring is set for this, prevents spring to be overly compressed, and further improves reliability of the invention.
In order to avoid outer cylinder body is ruptured by external object strike, protective case is set, and the grains of sand are full of between protective case and outer cylinder body, can so be effectively formed the effective protection to outer cylinder body.Protective case forms ground floor protection to be stopped to exterior object, and after exterior object passes through protective case, the second layer protection that the grains of sand are formed stops to exterior object.The grains of sand possess good buffering effect, it is possible to prevente effectively from exterior object is directly contacted with outer cylinder body.
Further, the periphery of the elastic rubber column offers spiral type groove.
Spiral type groove is set, makes elastic rubber column be easier to be compressed, it is to avoid elastic rubber column is impacted to shock-absorbing capacity of the invention.
Further, the cross section of the spiral type groove is triangle.
The cross section of spiral type groove is triangle, further makes elastic rubber column be easier to be compressed.
Further, it is provided with seal support part between the outer cylinder body bottom interior surface and the inner cylinder external surface.
Seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body.
Further, the seal support part is connected by bearing pin with the outer cylinder body.
Further, the damping hole is opened in the center of the damping body.
Further, the top of the bottom of the inner barrel and the outer cylinder body is provided with connector.
Connector is used to for the present invention to be fixed on undercarriage.
In sum, the advantages of the present invention are：
1. the present invention substitutes the air in inner barrel using spring, it is to avoid air leakage cause the buffering effect of damper will significantly weaken and damper cannot return problem；
2. the elastic rubber column of parcel spring is set, prevents spring to be overly compressed, further improve reliability of the invention；
3. the present invention forms multilayer proofing using protective case and the grains of sand, can effectively prevent outer cylinder body from being ruptured by external object strike；
4. spiral type groove is set, makes elastic rubber column be easier to be compressed, it is to avoid elastic rubber column is impacted to shock-absorbing capacity of the invention；
5. the cross section of spiral type groove is triangle, further makes elastic rubber column be easier to be compressed；
6. seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body；
7. check valve is set so that the fluid in slow pressure space can faster be pushed back oil pressure space, realize returning quickly.
Brief description of the drawings
In order to illustrate more clearly of embodiments of the invention, the accompanying drawing to be used needed for the description embodiment of the present invention will be briefly described below.It will be apparent that drawings in the following description are only some embodiments described in the present invention, for a person skilled in the art, without creative efforts, other accompanying drawings can also be obtained according to following accompanying drawing.
Fig. 1 is structural representation of the invention；
The wherein corresponding parts title of reference is as follows：
1- inner barrels, 2- outer cylinder bodies, 3- floating pistons, 4- damping bodies, 5- springs, 6- damping holes; 7- oil pressure space, the slow pressure spaces of 8-, 9- seal support parts, 10- bearing pins, 11- connectors; 12- elastic rubber columns, 13- spiral grooves, 14- protective cases, the 15- grains of sand, 16- check valves.
Specific embodiment
In order that those skilled in the art more fully understands the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention below in conjunction with the accompanying drawing in the embodiment of the present invention.It will be apparent that embodiment described below is only the part in the embodiment of the present invention, rather than whole.Based on the embodiment that the present invention is recorded, other all embodiments that those skilled in the art obtain without creative efforts, in the scope of protection of the invention.
Embodiment 1：
As shown in figure 1, loss prevention bradyseism device, including inner barrel 1, outer cylinder body 2, floating piston 3, damping body 4 and spring 5；The upper end closed of outer cylinder body 2, the lower end of outer cylinder body 2 opens, and the upper end of inner barrel 1 opens, the lower end closed of inner barrel 1；Floating piston 3 and spring 5 are arranged in inner barrel 1, and one end of spring 5 is connected with floating piston 3, and the other end of spring 5 is connected with the bottom interior surface of inner barrel 1；The outer wrapping elastic rubber column 12 of spring 5, the internal diameter of the diameter less than inner barrel 1 of elastic rubber column 12；Damping body 4 is arranged at the top of inner barrel 1, and damping hole 6 is offered on damping body 4；Inner barrel 1 is slideably positioned in outer cylinder body 2, and the space between the top of inner barrel 1 and the top of outer cylinder body 2 constitutes oil pressure space 7；Space in inner barrel 1 between floating piston 3 and damping body 4 constitutes slow pressure space 8；Also include being placed on the protective case 14 of the periphery of outer cylinder body 2, the grains of sand 15 are full of between the inner surface of protective case 14 and the outer surface of outer cylinder body 2；Also include the check valve 16 being arranged on damping body 4, check valve 16 is outwards turned on by inner barrel 1.
Fluid is full of in oil pressure space 7, when being extruded by external force, inner barrel 1 does compression motion relative to outer cylinder body 2, fluid can now produce damping so as to absorb partial capability during aircraft landing by the damping hole 6 on damping body 4.After fluid enters slow pressure space 8, the compression spring 5 of floating piston 3, further absorbability are promoted.After external force disappearance, spring 5 promotes floating piston 3, floating piston 3 that the fluid in slow pressure space 8 is pushed back into oil pressure space 7, and the fluid in oil pressure space 7 promotes inner barrel 1, inner barrel 1 is done stretching exercise relative to outer cylinder body 2, so realizes the return of bradyseism device.
Check valve 16 is set so that the fluid in slow pressure space 8 can faster be pushed back oil pressure space 7, realize returning quickly.
The present invention substitutes the air in inner barrel 1 using spring 5, it is to avoid air leakage cause the buffering effect of bradyseism device will significantly weaken and bradyseism device cannot return problem.
Spring 5 is easily damaged in excess compression, and the elastic rubber column 12 of parcel spring 5 is set for this, prevents spring 5 to be overly compressed, and further improves reliability of the invention.
In order to avoid outer cylinder body 2 is ruptured by external object strike, protective case 14 is set, and the grains of sand 15 are full of between protective case 14 and outer cylinder body 2, can so be effectively formed the effective protection to outer cylinder body 2.Protective case 14 forms ground floor protection to be stopped to exterior object, and after exterior object passes through protective case 14, the second layer protection that the grains of sand 15 are formed stops to exterior object.The grains of sand possess good buffering effect, it is possible to prevente effectively from exterior object is directly contacted with outer cylinder body 2.
Embodiment 2：
As shown in figure 1, the present embodiment is on the basis of embodiment 1, the periphery of the elastic rubber column 12 offers spiral type groove 13.
Spiral type groove 13 is set, makes elastic rubber column 12 be easier to be compressed, it is to avoid elastic rubber column 12 is impacted to shock-absorbing capacity of the invention.
Embodiment 3：
As shown in figure 1, the present embodiment is on the basis of embodiment 2, the cross section of the spiral type groove 13 is triangle.
The cross section of spiral type groove 13 is triangle, further makes elastic rubber column 12 be easier to be compressed.
Embodiment 4：
As shown in figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, seal support part 9 is provided between the bottom interior surface of the outer cylinder body 2 and the outer surface of the inner barrel 1.
Seal support part 9 is set, it is to avoid the oil liquid leakage in outer cylinder body 2.
Embodiment 5：
As shown in figure 1, the present embodiment is on the basis of embodiment 4, the seal support part 9 is connected by bearing pin 10 with the outer cylinder body 2.
Embodiment 6：
As shown in figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, the damping hole 6 is opened in the center of the damping body 4.
Embodiment 7：
As shown in figure 1, the present embodiment is on the basis of above-mentioned any one embodiment, the top of the bottom of the inner barrel 1 and the outer cylinder body 2 is provided with connector 11.
Connector 11 is used to for the present invention to be fixed on undercarriage.
Claims (7)
1. loss prevention bradyseism device, it is characterised in that：
Including inner barrel（1）, outer cylinder body（2）, floating piston（3）, damping body（4）And spring（5）；
Outer cylinder body（2）Upper end closed, outer cylinder body（2）Lower end opens, inner barrel（1）Upper end opens, inner barrel（1）Lower end closed；
Floating piston（3）And spring（5）It is arranged at inner barrel（1）It is interior, spring（5）One end and floating piston（3）Connection, spring（5）The other end and inner barrel（1）Bottom interior surface connection；
Spring（5）Outer wrapping elastic rubber column（12）, elastic rubber column（12）Diameter be less than inner barrel（1）Internal diameter；
Damping body（4）It is arranged at inner barrel（1）Top, damping body（4）On offer damping hole（6）；
Inner barrel（1）It is slideably positioned in outer cylinder body（2）In, inner barrel（1）Top and outer cylinder body（2）Space between top constitutes oil pressure space（7）；
Inner barrel（1）Interior floating piston（3）With damping body（4）Between space constitute slow pressure space（8）；
Also include being placed on outer cylinder body（2）The protective case of periphery（14）, protective case（14）Inner surface and outer cylinder body（2）Outer surface between be full of the grains of sand（15）；
Also include being arranged at damping body（4）On check valve（16）, check valve（16）By inner barrel（1）Outwards conducting.
2. loss prevention bradyseism device according to claim 1, it is characterised in that：
The elastic rubber column（12）Periphery offer spiral type groove（13）.
3. loss prevention bradyseism device according to claim 2, it is characterised in that：
The spiral type groove（13）Cross section be triangle.
4. loss prevention bradyseism device according to claim 1, it is characterised in that：
The outer cylinder body（2）Bottom interior surface and the inner barrel（1）Seal support part is provided between outer surface（9）.
5. loss prevention bradyseism device according to claim 4, it is characterised in that：
The seal support part（9）By bearing pin（10）With the outer cylinder body（2）Connection.
6. loss prevention bradyseism device according to claim 1, it is characterised in that：
The damping hole（6）It is opened in the damping body（4）Center.
7. the loss prevention bradyseism device according to any one in claim 1 ~ 6, it is characterised in that：
The inner barrel（1）Bottom and the outer cylinder body（2）Top be provided with connector（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785323.0A CN106704452A (en) | 2015-11-16 | 2015-11-16 | Loss-preventing shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785323.0A CN106704452A (en) | 2015-11-16 | 2015-11-16 | Loss-preventing shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106704452A true CN106704452A (en) | 2017-05-24 |
Family
ID=58931997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510785323.0A Pending CN106704452A (en) | 2015-11-16 | 2015-11-16 | Loss-preventing shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704452A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228148A (en) * | 2017-06-12 | 2017-10-03 | 北京市劳保所科技发展有限责任公司 | A kind of position limitation protection shock absorber |
| CN110375030A (en) * | 2019-07-24 | 2019-10-25 | 北京长城华冠汽车科技股份有限公司 | A kind of limiting device and automobile |
-
2015
- 2015-11-16 CN CN201510785323.0A patent/CN106704452A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228148A (en) * | 2017-06-12 | 2017-10-03 | 北京市劳保所科技发展有限责任公司 | A kind of position limitation protection shock absorber |
| CN110375030A (en) * | 2019-07-24 | 2019-10-25 | 北京长城华冠汽车科技股份有限公司 | A kind of limiting device and automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8656823B2 (en) | Methods and apparatus for suspending a vehicle shield | |
| US8763997B2 (en) | Helicopter landing gear damper | |
| CN100478251C (en) | Two-stage series connection two-chamber buffer | |
| CN204664276U (en) | Damping device is hit in a kind of recoil | |
| CN106704452A (en) | Loss-preventing shock absorber | |
| CN105626738A (en) | Aircraft undercarriage mixed damping method | |
| CN203836056U (en) | Buffer for helicopter | |
| CN106704455A (en) | Both-way anti-damage cushioning device | |
| ES2741561T3 (en) | Hydraulic shock absorber | |
| CN105626764A (en) | Method for buffering undercarriage by mixing rubber and spring | |
| CN106704472A (en) | Method for buffering take-off and landing impact of plane | |
| CN106704461A (en) | Damping protection method for aircraft | |
| CN106704444A (en) | Aircraft taking off and landing suspension method | |
| CN106704467A (en) | Impact buffering device | |
| CN106704462A (en) | Fixed wing aircraft taking-off and landing second-grade vibration relieving method | |
| CN105626766A (en) | Two-level rubber spring mixed absorber | |
| CN106704463A (en) | Fixed wing air vehicle damping protection method | |
| CN106704454A (en) | Spring oil pressure shock absorber | |
| CN106697270A (en) | Air vehicle bi-directional damping method | |
| CN107588149A (en) | A kind of bogie landing gear stabilizing bumper | |
| CN209581504U (en) | Light rail vehicle multistage energy absorption device | |
| CN105526298A (en) | Shock absorption protection method for aircraft landing gear | |
| CN105626763A (en) | Aircraft undercarriage two-level damping protection method | |
| CN106704466A (en) | Two-way impact buffer device | |
| CN114110081B (en) | Helicopter landing gear buffer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170524 |