CN106704454A - Spring oil pressure shock absorber - Google Patents
Spring oil pressure shock absorber Download PDFInfo
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- CN106704454A CN106704454A CN201510786637.2A CN201510786637A CN106704454A CN 106704454 A CN106704454 A CN 106704454A CN 201510786637 A CN201510786637 A CN 201510786637A CN 106704454 A CN106704454 A CN 106704454A
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- inner barrel
- spring
- oil pressure
- damping
- outer cylinder
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Abstract
The invention discloses a spring oil pressure shock absorber. The spring oil pressure shock absorber comprises an inner barrel body, an outer barrel body, a floating plug, a damping body and a spring, and further comprises a check valve arranged on the damping body, wherein the upper end of the outer barrel body is sealed; the lower end of the outer barrel body is open; the upper end of the inner barrel body is open; the lower end of the inner barrel body is sealed; the floating plug and the spring are arranged in the inner barrel body; one end of the spring is connected with the floating plug; the other end of the spring is connected with the inner surface of the bottom of the inner barrel body; the damping body is arranged at the top of the inner barrel body; a damping hole is formed in the damping body; the inner barrel body is arranged in the outer barrel body in a sliding manner; an oil pressure space is formed between the top end of the inner barrel body and the top end of the outer barrel body; and a pressure buffer space is formed between the floating plug and the damping body in the inner barrel body. According to the spring oil pressure shock absorber, the spring is adopted to replace air in the inner barrel, and the problems that the buffer effect of the shock absorber is greatly reduced and the shock absorber cannot return due to air leakage are avoided.
Description
Technical field
The present invention relates to aircraft field, more particularly to a kind of damper 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 damper.If shock absorber design is unreasonable, will cause that aircraft bears bigger load, cause airplane design weight to improve.If damper breaks down, aircraft hard landing will be caused, airframe structure is destroyed, or even fatal crass occurs.
Existing damper 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 damper will significantly weaken, and damper cannot return.Weaker buffering effect will be in aircraft landing, and undercarriage disappears with ground first time collision rift.
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 spring oil pressure shock absorber.
The purpose of the present invention is achieved through the following technical solutions：
Spring oil pressure shock absorber, 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；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 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 portion of energy during aircraft landing by the damping hole on damping body.After fluid enters slow pressure space, floating piston compression spring, further energy absorption 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 damper.
Check valve is set so that the fluid in slow pressure space can faster be pushed back oil pressure space, realize the returning quickly of damper.
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.
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. seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body；
3. check valve is set so that the fluid in slow pressure space can faster be pushed back oil pressure space, realize the returning quickly of damper.
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- 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, spring oil pressure shock absorber, 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；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 the check valve 12 being arranged on damping body 4, check valve 12 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 portion of energy 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 energy absorption 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 damper.
Check valve 12 is set so that the fluid in slow pressure space 8 can faster be pushed back oil pressure space 7, realize the returning quickly of damper.
The present invention substitutes the air in inner barrel 1 using spring 5, it is to avoid air leakage cause the buffering effect of damper will significantly weaken and damper cannot return problem.
Embodiment 2：
As shown in figure 1, the present embodiment is on the basis of embodiment 1, 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 8 is set, it is to avoid the oil liquid leakage in outer cylinder body 2.
Embodiment 3：
As shown in figure 1, the present embodiment is on the basis of embodiment 2, the seal support part 9 is connected by bearing pin 10 with the outer cylinder body 2.
Embodiment 4：
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 4：
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 (5)
1. spring oil pressure shock absorber, 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；
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 arranged at damping body（4）On check valve（12）, check valve（12）By inner barrel（1）Outwards conducting.
2. spring oil pressure shock absorber 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）.
3. spring oil pressure shock absorber according to claim 2, it is characterised in that：
The seal support part（9）By bearing pin（10）With the outer cylinder body（2）Connection.
4. spring oil pressure shock absorber according to claim 1, it is characterised in that：
The damping hole（6）It is opened in the damping body（4）Center.
5. the spring oil pressure shock absorber according to any one in claim 1 ~ 4, 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 |
|---|---|---|---|
| CN201510786637.2A CN106704454A (en) | 2015-11-16 | 2015-11-16 | Spring oil pressure shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786637.2A CN106704454A (en) | 2015-11-16 | 2015-11-16 | Spring oil pressure shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106704454A true CN106704454A (en) | 2017-05-24 |
Family
ID=58930542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510786637.2A Pending CN106704454A (en) | 2015-11-16 | 2015-11-16 | Spring oil pressure shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704454A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343698A (en) * | 2018-04-19 | 2018-07-31 | 卫德义 | Damper |
-
2015
- 2015-11-16 CN CN201510786637.2A patent/CN106704454A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343698A (en) * | 2018-04-19 | 2018-07-31 | 卫德义 | Damper |
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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 |