CN105626744A - Aircraft undercarriage two-level mixed damping method - Google Patents
Aircraft undercarriage two-level mixed damping method Download PDFInfo
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- CN105626744A CN105626744A CN201410580555.8A CN201410580555A CN105626744A CN 105626744 A CN105626744 A CN 105626744A CN 201410580555 A CN201410580555 A CN 201410580555A CN 105626744 A CN105626744 A CN 105626744A
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- inner barrel
- outer cylinder
- cylinder body
- floating piston
- damping
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Abstract
The invention discloses an aircraft undercarriage two-level mixed damping method, and the method comprises the steps that two absorbers move at the same time; oil is filled in an oil pressure space; when the two absorbers are squeezed by outside, an inner cylindrical shell performs a compression motion relative to an outer cylindrical shell, and the oil passes through a damping hole in a damping body; the oil enters a pressure relief space to promote a floating piston compress a spring; when the outside force disappears, the spring promotes the floating piston and the floating piston pushes the oil in the pressure relief space back into the oil pressure space; and the oil in the oil pressure space pushes the inner cylindrical shell to make the inner cylindrical shell perform an extension motion relative to the outer cylindrical shell. Two absorbers are connected to provide a longer stroke and a better damping effect.
Description
Technical field
The present invention relates to aircraft field, particularly relate to a kind of shock-dampening method for aircraft landing gear.
Background technology
Undercarriage is for the special arrangement taking off landing. In aircraft landing process, always with certain speed impacts ground, undercarriage bears and slows down this shock, thus alleviating the stand under load of aircraft. It is exactly amortisseur that undercarriage slows down the critical component of this bump stroke. If shock absorber design is unreasonable, aircraft will be made to bear bigger load, cause that airplane design weight improves. If amortisseur breaks down, causing aircraft hard landing, airframe structure is destroyed, and fatal crass even occurs.
Existing amortisseur adopts air-fuel mixture formula structure, and it is disadvantageously, air cavity is susceptible to leakage. Once air cavity leaks, the buffering effect of amortisseur will significantly weaken, and amortisseur cannot return. More weak buffering effect will when aircraft landing, and undercarriage disappears with ground first time collision rift.
Summary of the invention
Namely the purpose of the present invention is in that to overcome the deficiencies in the prior art, it is provided that a kind of undercarriage two grades mixing shock-dampening method.
The purpose of the present invention is achieved through the following technical solutions:
Undercarriage two grades mixing shock-dampening method, utilizes equipment as described below: described equipment includes two interconnective amortisseurs, and amortisseur includes inner barrel, outer cylinder body, floating piston, damping body and spring; Outer cylinder body upper end closed, outer cylinder body lower end is open, and inner barrel upper end is open, 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 body offers damping hole; 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; In inner barrel, the space between floating piston and damping body constitutes slow pressure space, and the outer cylinder body blind end of two amortisseurs is connected with each other;
Concrete grammar is as follows:
The actions simultaneously of two amortisseurs, are full of fluid in oil pressure space, when extrude by external force, inner barrel does compression motion relative to outer cylinder body, and fluid by the damping hole on damping body, now can produce to damp thus portion of energy when absorbing aircraft landing;
After fluid enters slow pressure space, promote floating piston compression spring, absorb energy further;
After external force disappears, spring promotes floating piston, and the fluid in slow pressure space is pushed back oil pressure space by floating piston, and the fluid in oil pressure space promotes inner barrel, makes inner barrel do stretching exercise relative to outer cylinder body, so namely realizes the return of amortisseur.
The present invention adopts spring to substitute the air in inner barrel, it is to avoid air leakage causes that the buffering effect of amortisseur is by significantly weaken cannot the problem of return with amortisseur.
The equipment of the present invention adopts two amortisseurs to be interconnected to constitute, it is provided that longer stroke, thus possessing better damping effect.
Further, seal support part is adopted to seal between described outer cylinder body bottom interior surface and described inner barrel outer surface.
Seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body.
Further, described seal support part is connected with described outer cylinder body by bearing pin.
Further, described damping hole is opened in the center of described damping body.
Further, the bottom of described inner barrel is provided with connector.
Connector is for being fixed on undercarriage by the present invention.
In sum, advantages of the present invention and having the beneficial effects that:
1. the present invention adopts spring to substitute the air in inner barrel, it is to avoid air leakage causes that the buffering effect of amortisseur is by significantly weaken cannot the problem of return with amortisseur;
2. the equipment of the present invention adopts two amortisseurs to be interconnected to constitute, it is provided that longer stroke, thus possessing better damping effect;
3. seal support part is set, it is to avoid the oil liquid leakage in outer cylinder body.
Accompanying drawing explanation
In order to be illustrated more clearly that embodiments of the invention, the accompanying drawing used required for describing in the embodiment of the present invention will be briefly described below. It will be apparent that the accompanying drawing in the following describes is only some embodiments recorded in the present invention, for a person skilled in the art, when not paying creative work, it is also possible to according to figure below, obtain other accompanying drawing.
Fig. 1 is the structural representation of amortisseur in the present invention;
The parts title that wherein accompanying drawing labelling is corresponding is as follows:
1-inner barrel, 2-outer cylinder body, 3-floating piston, 4-damping body, 5-spring, 6-damping hole, 7-oil pressure space, 8-slow pressure space, 9-seal support part, 10-bearing pin, 11-connector.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete description. It will be apparent that embodiment described below is only the part in the embodiment of the present invention, rather than all. Based on the embodiment that the present invention records, other all embodiments that those skilled in the art obtain when not paying creative work, all in the scope of protection of the invention.
Embodiment 1:
As it is shown in figure 1, undercarriage two grades mixing shock-dampening method, utilizing equipment as described below: described equipment includes two interconnective amortisseurs, amortisseur includes 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 is open, and inner barrel 1 upper end is open, inner barrel 1 lower end closed; 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 body 4 offers damping hole 6; Inner barrel 1 is slideably positioned in outer cylinder body 2, and the space between inner barrel 1 top and outer cylinder body 2 top constitutes oil pressure space 7; In inner barrel 1, the space between floating piston 3 and damping body 4 constitutes slow pressure space 8, and outer cylinder body 2 blind end of two amortisseurs is connected with each other;
Method particularly includes:
Two amortisseur actions simultaneously, are full of fluid in oil pressure space 7, when being extruded by external force, inner barrel 1 does compression motion relative to outer cylinder body 2, and fluid is by the damping hole 6 on damping body 4;
Fluid promotes floating piston 3 to compress spring 5 after entering slow pressure space 8;
After external force disappears, spring 5 promotes floating piston 3, and the fluid in slow pressure space 8 is pushed back oil pressure space 7 by floating piston 3, and the fluid in oil pressure space 7 promotes inner barrel 1, makes inner barrel 1 do stretching exercise relative to outer cylinder body 2.
The present invention adopts spring 5 to substitute the air in inner barrel 1, it is to avoid air leakage causes that the buffering effect of amortisseur is by significantly weaken cannot the problem of return with amortisseur.
The present invention adopts two amortisseurs to be interconnected to constitute, it is provided that longer stroke, thus possessing better damping effect.
Embodiment 2:
As it is shown in figure 1, the present embodiment is on the basis of embodiment 1, seal support part 9 between described outer cylinder body 2 bottom interior surface and described inner barrel 1 outer surface, is adopted to seal
Seal support part 8 is set, it is to avoid the oil liquid leakage in outer cylinder body 2.
Embodiment 3:
As it is shown in figure 1, the present embodiment is on the basis of embodiment 2, described seal support part 9 is connected with described outer cylinder body 2 by bearing pin 10.
Embodiment 4:
As it is shown in figure 1, the present embodiment is on the basis of any one embodiment above-mentioned, described damping hole 6 is opened in the center of described damping body 4.
Embodiment 4:
As it is shown in figure 1, the present embodiment is on the basis of any one embodiment above-mentioned, the bottom of described inner barrel 1 is provided with connector 11.
Connector 11 is for being fixed on undercarriage by the present invention.
As it has been described above, the present invention just can be realized preferably.
Claims (6)
1. undercarriage two grades mixing shock-dampening method, it is characterised in that:
Utilize equipment as described below:
Described equipment includes two interconnective amortisseurs, and amortisseur includes 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 is open, and inner barrel (1) upper end is open, inner barrel (1) lower end closed; 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 body (4) offers damping hole (6); Inner barrel (1) is slideably positioned in outer cylinder body (2), and the space between inner barrel (1) top and outer cylinder body (2) top constitutes oil pressure space (7); Space between inner barrel (1) interior floating piston (3) and damping body (4) constitutes slow pressure space (8), and outer cylinder body (2) blind end of two amortisseurs is connected with each other.
2. method particularly includes:
Two amortisseur actions simultaneously, are full of fluid in oil pressure space (7), when being extruded by external force, inner barrel (1) does compression motion relative to outer cylinder body (2), and fluid is by the damping hole (6) on damping body (4);
Fluid promotes floating piston (3) compression spring (5) after entering slow pressure space (8);
After external force disappears, spring (5) promotes floating piston (3), fluid in slow pressure space (8) is pushed back oil pressure space (7) by floating piston (3), and the fluid in oil pressure space (7) promotes inner barrel (1), makes inner barrel (1) do stretching exercise relative to outer cylinder body (2).
3. undercarriage according to claim 1 two grades mixing shock-dampening method, it is characterised in that:
Seal support part (9) is adopted to seal between described outer cylinder body (2) bottom interior surface and described inner barrel (1) outer surface.
4. undercarriage according to claim 2 two grades mixing shock-dampening method, it is characterised in that:
Described seal support part (9) is connected with described outer cylinder body (2) by bearing pin (10).
5. undercarriage according to claim 1 two grades mixing shock-dampening method, it is characterised in that:
Described damping hole (6) is opened in the center of described damping body (4).
6. the undercarriage according to any one in claim 1 ~ 4 two grades mixing shock-dampening method, it is characterised in that:
The bottom of described inner barrel (1) is provided with connector (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580555.8A CN105626744A (en) | 2014-10-27 | 2014-10-27 | Aircraft undercarriage two-level mixed damping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580555.8A CN105626744A (en) | 2014-10-27 | 2014-10-27 | Aircraft undercarriage two-level mixed damping method |
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| Publication Number | Publication Date |
|---|---|
| CN105626744A true CN105626744A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410580555.8A Pending CN105626744A (en) | 2014-10-27 | 2014-10-27 | Aircraft undercarriage two-level mixed damping method |
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| Country | Link |
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| CN (1) | CN105626744A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972853A (en) * | 2017-12-07 | 2018-05-01 | 佛山市神风航空科技有限公司 | Aerial photography aircraft undercarriage two level shock-damping structure |
| CN115151483A (en) * | 2020-02-26 | 2022-10-04 | 赛峰起落架***公司 | Measuring the pressure in the expansion chamber of an encapsulated shock absorber in an aircraft landing gear |
-
2014
- 2014-10-27 CN CN201410580555.8A patent/CN105626744A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972853A (en) * | 2017-12-07 | 2018-05-01 | 佛山市神风航空科技有限公司 | Aerial photography aircraft undercarriage two level shock-damping structure |
| CN115151483A (en) * | 2020-02-26 | 2022-10-04 | 赛峰起落架***公司 | Measuring the pressure in the expansion chamber of an encapsulated shock absorber in an aircraft landing gear |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |