CN105626740A - Multistage damping shock-absorbing apparatus - Google Patents
Multistage damping shock-absorbing apparatus Download PDFInfo
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- CN105626740A CN105626740A CN201410580678.1A CN201410580678A CN105626740A CN 105626740 A CN105626740 A CN 105626740A CN 201410580678 A CN201410580678 A CN 201410580678A CN 105626740 A CN105626740 A CN 105626740A
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- damping
- inner barrel
- floating piston
- cylindrical shell
- outer cylinder
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Abstract
The invention discloses a multistage damping shock-absorbing apparatus, which comprises an inner cylindrical shell, an outer cylindrical shell, a first floating piston, a first damping body, a second damping body, a second floating piston and a spring. The upper end of the outer cylindrical shell is closed; the lower end of the outer cylindrical shell is open; the upper end of the inner cylindrical shell is open; the lower end of the inner cylindrical shell is closed; the first damping body is arranged on the top of the inner cylindrical shell; the spring, the second floating piston, the second damping body and the first floating piston are arranged inside the inner cylindrical shell from top to bottom in order; one end of the spring is connected to the second floating piston and the other end of the spring is connected to the interior surface at the bottom of the inner cylindrical shell; a first damping aperture is drilled in the first damping body, and a second damping aperture is drilled in the second damping body; the inner cylindrical shell is arranged in the outer cylindrical shell in a sliding way; and an oil pressure space is formed between the top end of the inner cylindrical shell and the top end of the outer cylindrical shell. By adopting multistage pressure-relief, the shock-absorbing capability of a shock-absorbing apparatus is improved; at the same time, the requirement to the material intensity of the damping body is reduced; and the problem of over-hard performance of the shock-absorbing apparatus is solved.
Description
Technical field
The present invention relates to aircraft field, particularly relate to a kind of Multi-stage damping formula shock-absorbing equipment.
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 shock-absorbing equipment that undercarriage slows down the critical component of this bump stroke. If the design of shock-absorbing equipment is unreasonable, aircraft will be made to bear bigger load, cause that airplane design weight improves. If shock-absorbing equipment breaks down, causing aircraft hard landing, airframe structure is destroyed, and fatal crass even occurs.
Existing shock-absorbing equipment adopts air-fuel mixture formula structure, and it is disadvantageously, air cavity is susceptible to leakage. Once air cavity leaks, the buffering effect of shock-absorbing equipment will significantly weaken, and shock-absorbing equipment cannot return. More weak buffering effect will when aircraft landing, and undercarriage disappears with ground first time collision rift.
Meanwhile, existing shock-absorbing equipment only exists a damping unit, the finite energy of its absorption. As in order to improve energy absorption, diminished by the damping hole on damping unit, the requirement making the strength of materials to damping unit being greatly improved, the service behaviour simultaneously also making shock-absorbing equipment overall seemed and " firmly " affected shock-proof effect.
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 Multi-stage damping formula shock-absorbing equipment.
The purpose of the present invention is achieved through the following technical solutions:
Multi-stage damping formula shock-absorbing equipment, including inner barrel, outer cylinder body, the first floating piston, the first damping body, the second damping body, the second floating piston 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; First damping body is arranged at the top of inner barrel, spring, the second floating piston, the second damping body and the first floating piston is set gradually from bottom to up in inner barrel, one end of spring is connected with the second floating piston, and the other end of spring is connected with the bottom interior surface of inner barrel; First damping body offers the first damping hole, the second damping body offers the second 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 the first floating piston and the first damping body constitutes the first slow pressure space; In inner barrel, the space between the first floating piston and the second damping body constitutes the second slow pressure space; In inner barrel, the space between the second damping body and the second floating piston constitutes the 3rd slow pressure space.
Being full of fluid in oil pressure space, when being extruded by external force, inner barrel does compression motion relative to outer cylinder body. Fluid by the first damping hole on the first damping body, now can produce damping thus portion of energy when absorbing aircraft landing. Fluid enters the first slow pressure space, promotes the first floating piston to move downward. First floating piston promotes fluid in the second slow pressure space by the second damping hole on the second damping body, now can produce damping thus portion of energy when absorbing aircraft landing. Fluid enters the 3rd slow pressure space, promotes the second floating piston to move downward, compresses spring, absorb energy further. After external force disappears, spring promotes the second floating piston, fluid in 3rd slow pressure space is pushed back the second slow pressure space by the second floating piston, fluid amount in second slow pressure space increases, promote the first floating piston that the fluid in the first slow pressure space is pushed back oil pressure space, 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 multistage slow pressure, improve the shock-absorbing ability of shock-absorbing equipment, reduce the requirement to the damping body strength of materials simultaneously, it is to avoid the problem that shock-absorbing equipment service behaviour crosses " firmly ".
Further, it is provided with seal support part 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 first damping hole is opened in the center of described first damping body; Described second damping hole is opened in the center of described second damping body.
Further, the bottom of described inner barrel and the top of described outer cylinder body are 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 present invention adopts multistage slow pressure, improve the shock-absorbing ability of shock-absorbing equipment, reduce the requirement to the damping body strength of materials simultaneously, it is to avoid the problem that shock-absorbing equipment service behaviour crosses " firmly ";
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 the present invention;
The parts title that wherein accompanying drawing labelling is corresponding is as follows:
1-inner barrel, 2-outer cylinder body, 3-the first floating piston, 4-the first damping body, 5-the second damping body, 6-the second floating piston, 7-spring, 8-the first damping hole, 9-the second damping hole, 10-oil pressure space, the slow pressure space of 11-first, the slow pressure space of 12-second, the slow pressure space of 13-the 3rd, 14-seal support part, 15-bearing pin, 16-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, Multi-stage damping formula shock-absorbing equipment, including inner barrel 1, outer cylinder body the 2, first floating piston the 3, first damping body the 4, second damping body the 5, second floating piston 6 and spring 7; 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; First damping body 4 is arranged at the top of inner barrel 1, spring the 7, second floating piston the 6, second damping body 5 and the first floating piston 3 is set gradually from bottom to up in inner barrel 1, one end of spring 7 is connected with the second floating piston 6, and the other end of spring 7 is connected with the bottom interior surface of inner barrel 1; First damping body 4 offers the first damping hole 8, the second damping body 5 offers the second damping hole 9; 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 10; In inner barrel 1, the space between the first floating piston 3 and the first damping body 4 constitutes the first slow pressure space 11; In inner barrel 1, the space between the first floating piston 3 and the second damping body 5 constitutes the second slow pressure space 12; In inner barrel 1, the space between the second damping body 5 and the second floating piston 6 constitutes the 3rd slow pressure space 13.
Being full of fluid in oil pressure space 10, when being extruded by external force, inner barrel 1 does compression motion relative to outer cylinder body 2. Fluid by the first damping hole 8 on the first damping body 4, now can produce damping thus portion of energy when absorbing aircraft landing. Fluid enters the first slow pressure space 11, promotes the first floating piston 3 to move downward. First floating piston 3 promotes fluid in the second slow pressure space 12 by the second damping hole 9 on the second damping body 5, now can produce damping thus portion of energy when absorbing aircraft landing. Fluid enters the 3rd slow pressure space 13, promotes the second floating piston 6 to move downward, compresses spring 7, absorb energy further. After external force disappears, spring 7 promotes the second floating piston 6, fluid in 3rd slow pressure space 13 is pushed back the second slow pressure space 12 by the second floating piston 6, fluid amount in second slow pressure space 12 increases, promote the first floating piston 3 that the fluid in first slow pressure space 11 is pushed back oil pressure space 10, fluid in oil pressure space 10 promotes inner barrel 1, makes inner barrel 1 do stretching exercise relative to outer cylinder body 2, so namely realizes the return of amortisseur.
The present invention adopts multistage slow pressure, improve the shock-absorbing ability of shock-absorbing equipment, reduce the requirement to the damping body strength of materials simultaneously, it is to avoid the problem that shock-absorbing equipment service behaviour crosses " firmly ".
Embodiment 2:
As it is shown in figure 1, the present embodiment is on the basis of embodiment 1, between described outer cylinder body 2 bottom interior surface and described inner barrel 1 outer surface, it is provided with seal support part 14.
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 14 is connected with described outer cylinder body 2 by bearing pin 15.
Embodiment 4:
As it is shown in figure 1, the present embodiment is on the basis of any one embodiment above-mentioned, described first damping hole 8 is opened in the center of described first damping body 4; Described second damping hole 9 is opened in the center of described second damping body 5.
Embodiment 5:
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 and the top of described outer cylinder body 2 are provided with connector 16.
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 (5)
1. Multi-stage damping formula shock-absorbing equipment, it is characterised in that:
Including inner barrel (1), outer cylinder body (2), the first floating piston (3), the first damping body (4), the second damping body (5), the second floating piston (6) and spring (7);
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;
First damping body (4) is arranged at the top of inner barrel (1), spring (7), the second floating piston (6), the second damping body (5) and the first floating piston (3) is set gradually from bottom to up in inner barrel (1), one end of spring (7) is connected with the second floating piston (6), and the other end of spring (7) is connected with the bottom interior surface of inner barrel (1);
First damping body (4) offers the first damping hole (8), the second damping body (5) offers the second damping hole (9);
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 (10);
In inner barrel (1), the space between the first floating piston (3) and the first damping body (4) constitutes the first slow pressure space (11);
In inner barrel (1), the space between the first floating piston (3) and the second damping body (5) constitutes the second slow pressure space (12);
In inner barrel (1), the space between the second damping body (5) and the second floating piston (6) constitutes the 3rd slow pressure space (13).
2. Multi-stage damping formula shock-absorbing equipment according to claim 1, it is characterised in that:
Seal support part (14) it is provided with between described outer cylinder body (2) bottom interior surface and described inner barrel (1) outer surface.
3. Multi-stage damping formula shock-absorbing equipment according to claim 2, it is characterised in that:
Described seal support part (14) is connected with described outer cylinder body (2) by bearing pin (15).
4. Multi-stage damping formula shock-absorbing equipment according to claim 1, it is characterised in that:
Described first damping hole (8) is opened in the center of described first damping body (4);
Described second damping hole (9) is opened in the center of described second damping body (5).
5. the Multi-stage damping formula shock-absorbing equipment according to any one in claim 1 ~ 4, it is characterised in that:
The bottom of described inner barrel (1) and the top of described outer cylinder body (2) are provided with connector (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580678.1A CN105626740A (en) | 2014-10-27 | 2014-10-27 | Multistage damping shock-absorbing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410580678.1A CN105626740A (en) | 2014-10-27 | 2014-10-27 | Multistage damping shock-absorbing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105626740A true CN105626740A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410580678.1A Pending CN105626740A (en) | 2014-10-27 | 2014-10-27 | Multistage damping shock-absorbing apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN105626740A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087477A (en) * | 2017-11-29 | 2018-05-29 | 中国直升机设计研究所 | A kind of floating piston of band elasticity |
| CN116812142A (en) * | 2023-04-19 | 2023-09-29 | 南京儒一航空机械装备有限公司 | Undercarriage buffer gear and undercarriage |
-
2014
- 2014-10-27 CN CN201410580678.1A patent/CN105626740A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087477A (en) * | 2017-11-29 | 2018-05-29 | 中国直升机设计研究所 | A kind of floating piston of band elasticity |
| CN108087477B (en) * | 2017-11-29 | 2020-05-08 | 中国直升机设计研究所 | Elastic floating piston |
| CN116812142A (en) * | 2023-04-19 | 2023-09-29 | 南京儒一航空机械装备有限公司 | Undercarriage buffer gear and undercarriage |
| CN116812142B (en) * | 2023-04-19 | 2024-03-01 | 南京儒一航空机械装备有限公司 | Undercarriage buffer gear and undercarriage |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |
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| WD01 | Invention patent application deemed withdrawn after publication |