CN109573108A - One kind is towards reusable rocket landing supporting leg formula two-stage buffer - Google Patents
One kind is towards reusable rocket landing supporting leg formula two-stage buffer Download PDFInfo
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- CN109573108A CN109573108A CN201811636109.9A CN201811636109A CN109573108A CN 109573108 A CN109573108 A CN 109573108A CN 201811636109 A CN201811636109 A CN 201811636109A CN 109573108 A CN109573108 A CN 109573108A
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- Prior art keywords
- buffer
- level
- supporting leg
- shell
- leg formula
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/62—Systems for re-entry into the earth's atmosphere; Retarding or landing devices
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
For one kind towards reusable rocket landing supporting leg formula two-stage buffer, it is related to a kind of buffer.The present invention solves the problems, such as that existing buffer unit buffering energy-absorbing effect when rocket lands is undesirable, impact force is jiggly.The present invention includes raming, buffer shell end cap, buffer shell and pedestal, buffer shell is the staving of upper end opening, pedestal is fixedly mounted on the inner bottom surface of buffer shell, shell end cap lid is mounted in buffer upper shell opening, described one kind further includes first-level buffer component and level 2 buffering component towards reusable rocket landing supporting leg formula two-stage buffer, the first-level buffer component and the level 2 buffering component are from top to bottom sequentially connected, and the level 2 buffering component is mounted on the base, the lower end ramed passes through buffer shell end cap and connect with the first-level buffer component.The present invention is used for aerospace field.
Description
Technical field
The present invention relates to a kind of buffers, and in particular to a kind of to buffer towards reusable rocket landing supporting leg formula two-stage
Device.
Background technique
Traditional disposable carrier rocket is the main delivery vehicle for undertaking space launch mission, can not be again after rocket launching
It utilizes, therefore it is high to cause space launch cost.
The soft landing of rocket is realized before recyclable fire by landing buffer mechanism, and passes through the simplified overhauling and fuel on ground
Supply is realized to be emitted again, is improved emission effciency and is lowered launch cost, is of great significance to strengthening the defense capabilities.
Leg formula landing buffer device there are many structure type, at present main reliable padded coaming collapse method buffer,
Metal-rubber buffer, hydraulic draft gear, magnetorheological fluid buffer, mechanical buffer, broaching tool formula buffer and metal foil
Wall pipe is plastically deformed buffer.So far to be upper, the domestic research achievement acquired by reusable rocket method is not much.This
Outside, the buffering for lander a variety of landing operating conditions that may be present, using the honeycomb of single specification as buffer unit
Energy-absorbing effect is not able to satisfy the demand of lander safe landing, it is therefore necessary to carry out for the multistage combined of reusable rocket
Buffer unit.
Summary of the invention
The purpose of the present invention is to solve existing buffer units, and when rocket lands, buffering energy-absorbing effect is undesirable, rushes
The jiggly problem of power is hit, and then provides one kind towards reusable rocket landing supporting leg formula two-stage buffer.
The technical scheme is that
The present invention include ram, buffer shell end cap, buffer shell and pedestal, buffer shell are upper end openings
Staving, pedestal are fixedly mounted on the inner bottom surface of buffer shell, and shell end cap lid is mounted in buffer upper shell opening, described
One kind further includes first-level buffer component and level 2 buffering component towards reusable rocket landing supporting leg formula two-stage buffer, described
First-level buffer component and the level 2 buffering component are from top to bottom sequentially connected, and the level 2 buffering component is mounted on pedestal
On, the lower end ramed passes through buffer shell end cap and connect with the first-level buffer component.
Further, the first-level buffer component includes air chamber sealing end cap, piston rod and cylinder body, the lower end of the cylinder body
It is connect with level 2 buffering component, the lower end of piston rod is inserted at the upper end opening of cylinder body, and air chamber sealing end cap lid is closed in piston
At the upper end opening of bar, and air chamber sealing end cap is bolted with the lower end ramed.
Further, the inside of piston rod is equipped with separator piston, and separator piston is pie cylindrical body, and separator piston is upper
Surface is equipped with circular groove；The lower end of piston rod is equipped with damping hole, between air chamber sealing end cap and the upper surface of separator piston
Equipped with gas spring；Low pressure oil pocket is equipped between on the inside of the lower surface of separator piston and the lower wall of piston rod.
Further, the lower wall middle position of the cylinder body is equipped with irregular spindle, and the upper end of irregular spindle is interspersed in
In damping hole, high-voltage oil cavity is equipped in cylinder body, and high-voltage oil cavity is located at the bottom surface of piston rod and the lower wall inside of cylinder body
Between.
Further, the lower end of the cylinder body is provided with screw hole.
Further, the level 2 buffering device assembly includes solid conical ring, thin metallic tubd and porous material, thin-wall metal
The lower end of pipe is connected by the upper surface of bolt and pedestal, and in thin metallic tubd, solid conical ring is inlaid in porous material filling
In the upper end of thin metallic tubd, the upper surface of solid conical ring is equipped with protrusion, and raised side wall is equipped with screw thread, protrusion and cylinder body lower end
Screw hole connection.
Further, the porous material is aluminum honeycomb material or foam metal material.
Further, the pedestal is solid construction, and the upper end of pedestal is equipped with boss, and boss is inlaid in thin metallic tubd
At lower openings.
Further, the lower end of the buffer shell is solid cone structure, and is equipped with through-hole in the lower end of shell.
Further, thin metallic tubd is sequentially connected by sizing section and not sizing section head and the tail and is formed, and solid conical ring is inlaid in
Not in sizing section.
The present invention has the effect that compared with prior art
The present invention uses the hydraulic bjuffer of irregular spindle, and by hydraulic bjuffer, porous material buffer and thin
Wall metallic pipe plastic deformation these three buffering methods of buffer by forming a kind of combined buffer, first-level buffer group in series and parallel
Part uses hydraulic cushion；Level 2 buffering modular construction is utilized thin metallic tubd plastic deformation buffer and porous material buffer
It is connected in parallel, forms combined buffers, be adapted to rocket and recycle a variety of landing operating conditions；The leg formula buffer has knot simultaneously
Structure is simple, buffering energy-absorbing effect is good when landing, impact force is steady.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is first-level buffer component structure diagram；
Fig. 3 is level 2 buffering component structure diagram.
Specific embodiment
Specific embodiment 1: illustrate present embodiment in conjunction with Fig. 1 to Fig. 3, it of present embodiment includes raming 1, being slow
Device shell end cap 2, buffer shell 3 and pedestal 10 are rushed, buffer shell 3 is the staving of upper end opening, and pedestal 10 is fixedly mounted
In the inner bottom surface of buffer shell 3, the lid of shell end cap 2 is described a kind of towards recyclable at 3 upper end opening of buffer shell
Rocket landing supporting leg formula two-stage buffer further includes first-level buffer component and level 2 buffering component, the first-level buffer component and
The level 2 buffering component is from top to bottom sequentially connected, and the level 2 buffering component is mounted on pedestal 10, ram 1 lower end
It is connect across buffer shell end cap 2 with the first-level buffer component.
1 upper end of raming can absorb impact load, and buffer shell end cap 2 is the ring flange for having bolt hole
Structure.Pedestal 10 is a solid metal boss, and boss can be embedded in thin metallic tubd 8.First-level buffer component and second level are slow
Rushing component, buffering energy-absorbing effect is good when rocket can be made to land, impact dynamic balance, bumper portion structure may be reused.
Specific embodiment 2: illustrating present embodiment, the first-level buffer group of present embodiment in conjunction with Fig. 1 and Fig. 2
Part includes air chamber sealing end cap 11, piston rod 12 and cylinder body 15, and the lower end of the cylinder body 15 is connect with level 2 buffering component, piston
The lower end of bar 12 is inserted at the upper end opening of cylinder body 15, and the lid of air chamber sealing end cap 11 closes at the upper end opening of piston rod 12,
And air chamber sealing end cap 11 is bolted with 1 lower end of raming.
Air chamber sealing end cap 11 is a solid metal end cap, and effect is that a closing is formed with hollow piston rod upper end
Gas chamber, to form gas spring；Piston rod 12 is a hollow cylinder structure, and upper end is opening, lower end be it is solid, open
There is a damping hole 14.12 inner wall smooth of piston rod.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 3: embodiment is described with reference to Fig. 2, the inside of the piston rod 12 of present embodiment be equipped with every
From piston 13, separator piston 13 is pie cylindrical body, and the upper surface of separator piston is equipped with circular groove 13-1；Piston rod 12
Lower end is equipped with damping hole 14, and gas spring 4 is equipped between air chamber sealing end cap 11 and the upper surface of separator piston 13；It is being isolated
Low pressure oil pocket 5 is equipped between on the inside of the lower surface of piston 13 and the lower wall of piston rod.
13 outer wall of separator piston is smooth, can move along the inner wall of hollow piston rod 12；The gas spring 4 is
The closed air chamber of helium is filled, low pressure oil pocket 5 is the closed chamber filled with hydraulic oil.
Other compositions and connection relationship are identical with embodiment two.
Specific embodiment 4: embodiment is described with reference to Fig. 2, among the lower wall of the cylinder body 15 of present embodiment
Position is equipped with irregular spindle 16, and the upper end of irregular spindle 16 is interspersed in damping hole 14, and high pressure oil is equipped in cylinder body 15
Chamber 6, and high-voltage oil cavity 6 is located between the bottom surface of piston rod 12 and the lower wall inside of cylinder body 15.
High-voltage oil cavity is the closed chamber filled with hydraulic oil.Other compositions and connection relationship and specific embodiment two
It is identical.
Specific embodiment 5: illustrating present embodiment in conjunction with Fig. 1 and Fig. 2, under the cylinder body 15 of present embodiment
End is provided with screw hole 15-1, so set, for being threadedly coupled with raised 7-1.Other compositions and connection relationship and specific embodiment party
Formula two is identical.
Specific embodiment 6: embodiment is described with reference to Fig. 3, the level 2 buffering component described in present embodiment
Including solid conical ring 7, thin metallic tubd 8 and porous material 9, the lower end of thin metallic tubd 8 passes through the upper table of bolt and pedestal 10
Face connection, porous material 9 are filled in thin metallic tubd 8, and solid conical ring 7 is inlaid in the upper end of thin metallic tubd 8, solid-cone
The upper surface of ring 7 is equipped with screw thread, the screw hole 15-1 company of raised 7-1 and 15 lower end of cylinder body equipped with the side wall of protrusion 7-1, raised 7-1
It connects.
Thin metallic tubd 8 is hollow circular-tube made of metal, what solid conical ring 7 was fabricated to by high hardness alloy steel
Conical ring can transfer load to the porous material 9 of lower section, while solid conical ring does not deform when by axial load
Or deformation very little.Solid conical ring 7 can move axially down when being impacted, by being crushed porous material 9, to inhale
Foreign impacts are received, level 2 buffering structure is so far formed.Other compositions and connection relationship are identical as specific embodiment one or five.
Specific embodiment 7: embodiment is described with reference to Fig. 3, porous material 9 described in present embodiment is aluminium bee
Nest material or foam metal material.So set, by the conquassation deformation of material to absorb external impact.Other compositions and company
It is identical as specific embodiment six to connect relationship.
Specific embodiment 8: embodiment is described with reference to Fig. 1, pedestal 10 described in present embodiment is solid construction,
The upper surface of pedestal 10 is equipped with boss 10-1, and boss 10-1 is inlaid at the lower openings of thin metallic tubd 8.Other compositions and company
It is same as the specific embodiment one to connect relationship.
Specific embodiment 9: embodiment is described with reference to Fig. 1, the lower end of buffer shell 3 described in present embodiment
For solid cone structure, and through-hole 3-1 is equipped in the lower end of shell 3.So set, can be connected with foot pad convenient for the later period.
Other compositions and connection relationship are same as the specific embodiment one.
Specific embodiment 10: in conjunction with Fig. 1, Fig. 3 thin metallic tubd 8 by sizing section 8-1 and not sizing section 8-2 head and the tail successively
Connection composition, solid conical ring 7 are inlaid in not sizing section 8-2.
Other compositions and connection relationship are identical as specific embodiment six.
Working principle: when the object of relative motion ram 1 when, impact force is transmitted to piston rod 12, piston rod 12
It moves down in the axial direction, at this point, oil pressure sharply increases in high-voltage oil cavity 6, oil liquid passes through damping hole 14 and irregular spindle
16 are formed by annular gap flows to low pressure chamber 5, since oil liquid will receive resistance when through damping hole 14, piston rod 12
Speed also will receive limitation, and the kinetic energy of alluvium is largely converted into the thermal energy of oil liquid, and dissipates in air, to reach
The purpose of buffering；Meanwhile after oil liquid flows to low pressure chamber 5 from high pressure chest 6, pressure rise in low pressure chamber 5, to compress separator piston
13 move upwards, and part kinetic energy is converted into the potential energy of deformation of gas spring 4, and after buffering, the potential energy that gas spring 4 is saved is opened
Begin to discharge, hydraulic bjuffer is made to be restored to the state before impact.
Second level buffering method is by thin metallic tubd plastic deformation buffer and porous material buffer parallel combination one
It rises, collectively constitutes second level buffer structure, can be moved axially down when solid conical ring 7 is by axial impact, pass through pressure
Routed porous material 9 so far forms second level buffer structure to absorb foreign impacts.
Claims (10)
1. a kind of towards reusable rocket landing supporting leg formula two-stage buffer, it include ram (1), buffer shell end cap
(2), buffer shell (3) and pedestal (10), buffer shell (3) are the stavings of upper end opening, and pedestal (10) is fixedly mounted on
The inner bottom surface of buffer shell (3), shell end cap (2) lid is at buffer shell (3) upper end opening, it is characterised in that: institute
It further includes first-level buffer component and level 2 buffering component, institute that one kind, which is stated, towards reusable rocket landing supporting leg formula two-stage buffer
It states first-level buffer component and the level 2 buffering component is from top to bottom sequentially connected, and the level 2 buffering component is mounted on pedestal
(10) on, ram (1) lower end pass through buffer shell end cap (2) connect with the first-level buffer component.
2. one kind according to claim 1 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The first-level buffer component includes air chamber sealing end cap (11), piston rod (12) and cylinder body (15), the lower end of the cylinder body (15)
It is connect with level 2 buffering component, the lower end of piston rod (12) is inserted at the upper end opening of cylinder body (15), air chamber sealing end cap
(11) lid close at the upper end opening of piston rod (12), and air chamber sealing end cap (11) with ram (1) lower end by bolt company
It connects.
3. one kind according to claim 2 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The inside of piston rod (12) is equipped with separator piston (13), and separator piston (13) is pie cylindrical body, and the upper surface of separator piston
Equipped with circular groove (13-1)；The lower end of piston rod (12) be equipped with damping hole (14), air chamber sealing end cap (11) be isolated work
It fills in and is equipped with gas spring (4) between the upper surface of (13)；In the lower surface of separator piston (13) and the lower wall of piston rod (12)
Low pressure oil pocket (5) are equipped between side.
4. one kind according to claim 2 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The lower wall middle position of the cylinder body (15) is equipped with irregular spindle (16), and the upper end of irregular spindle (16) is interspersed in damping hole
(14) in, high-voltage oil cavity (6) are equipped in cylinder body (15), and high-voltage oil cavity (6) is located at the bottom surface and cylinder body of piston rod (12)
(15) between on the inside of lower wall.
5. one kind according to claim 2 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The lower end of the cylinder body (15) is provided with screw hole (15-1).
6. towards reusable rocket landing supporting leg formula two-stage buffer, feature exists one kind according to claim 1 or 5
In: the level 2 buffering component include solid conical ring (7), thin metallic tubd (8) and porous material (9), thin metallic tubd (8)
Lower end is connect by bolt with the upper surface of pedestal (10), and porous material (9) is filled in thin metallic tubd (8), solid conical ring
(7) it is inlaid in the upper end of thin metallic tubd (8), the upper surface of solid conical ring (7) is equipped with raised (7-1), the side of raised (7-1)
Wall is equipped with screw thread, and raised (7-1) is connect with the screw hole (15-1) of cylinder body (15) lower end.
7. one kind according to claim 6 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The porous material (9) is aluminum honeycomb material or foam metal material.
8. one kind according to claim 1 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The pedestal (10) is solid construction, and the upper end of pedestal (10) is equipped with boss (10-1), and boss (10-1) is inlaid in thin-wall metal
At the lower openings for managing (8).
9. one kind according to claim 1 is towards reusable rocket landing supporting leg formula two-stage buffer, it is characterised in that:
The lower end of the buffer shell (3) is solid cone structure, and is equipped with through-hole (3-1) in the lower end of shell (3).
10. one kind according to claim 1 is towards reusable rocket landing supporting leg formula two-stage buffer, feature exists
In: thin metallic tubd (8) is sequentially connected from beginning to end by sizing section (8-1) and not sizing section (8-2) and is formed, and solid conical ring (7) is embedded in
In not sizing section (8-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636109.9A CN109573108A (en) | 2018-12-29 | 2018-12-29 | One kind is towards reusable rocket landing supporting leg formula two-stage buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811636109.9A CN109573108A (en) | 2018-12-29 | 2018-12-29 | One kind is towards reusable rocket landing supporting leg formula two-stage buffer |
Publications (1)
| Publication Number | Publication Date |
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| CN109573108A true CN109573108A (en) | 2019-04-05 |
Family
ID=65933548
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811636109.9A Pending CN109573108A (en) | 2018-12-29 | 2018-12-29 | One kind is towards reusable rocket landing supporting leg formula two-stage buffer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254721A (en) * | 2019-07-10 | 2019-09-20 | 河海大学常州校区 | A kind of aerial dispensing buffer platform |
| CN110282134A (en) * | 2019-07-10 | 2019-09-27 | 河海大学常州校区 | A kind of aerial dispensing buffer platform |
| CN111536189A (en) * | 2020-04-22 | 2020-08-14 | 南京航空航天大学 | Oil gas and expanding combined type crash-resistant buffer |
| CN111677809A (en) * | 2020-06-11 | 2020-09-18 | 南京航空航天大学 | Oil-gas separation type variable oil hole combined crash-resistant buffer |
| CN112009693A (en) * | 2020-09-09 | 2020-12-01 | 蔡永森 | Air-ride seat protection device |
| CN114593645A (en) * | 2022-03-10 | 2022-06-07 | 南京航空航天大学 | Active and passive multi-stage buffering energy-absorbing structure for survival requirement of components in projectile body |
| CN117272547A (en) * | 2023-10-31 | 2023-12-22 | 深圳市乾行达科技有限公司 | Method and device for determining landing buffer mechanism parameters based on buffer inclination angle variable |
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| CN205858848U (en) * | 2016-04-26 | 2017-01-04 | 苏州普来可瑞机电技术有限公司 | There is the energy-saving and noise-reducing single-acting blow cylinder of return reset gas spring in cylinder |
| CN109050985A (en) * | 2018-09-26 | 2018-12-21 | 北京空间机电研究所 | It is a kind of without wheeled horizontal landing device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110254721A (en) * | 2019-07-10 | 2019-09-20 | 河海大学常州校区 | A kind of aerial dispensing buffer platform |
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| CN111536189A (en) * | 2020-04-22 | 2020-08-14 | 南京航空航天大学 | Oil gas and expanding combined type crash-resistant buffer |
| CN111536189B (en) * | 2020-04-22 | 2022-04-22 | 南京航空航天大学 | Oil gas and expanding combined type crash-resistant buffer |
| CN111677809A (en) * | 2020-06-11 | 2020-09-18 | 南京航空航天大学 | Oil-gas separation type variable oil hole combined crash-resistant buffer |
| CN112009693A (en) * | 2020-09-09 | 2020-12-01 | 蔡永森 | Air-ride seat protection device |
| CN112009693B (en) * | 2020-09-09 | 2022-07-01 | 蔡永森 | Air-ride seat protection device |
| CN114593645A (en) * | 2022-03-10 | 2022-06-07 | 南京航空航天大学 | Active and passive multi-stage buffering energy-absorbing structure for survival requirement of components in projectile body |
| CN114593645B (en) * | 2022-03-10 | 2022-11-04 | 南京航空航天大学 | Active and passive multi-stage buffering energy-absorbing structure for survival requirement of components in projectile body |
| CN117272547A (en) * | 2023-10-31 | 2023-12-22 | 深圳市乾行达科技有限公司 | Method and device for determining landing buffer mechanism parameters based on buffer inclination angle variable |
| CN117272547B (en) * | 2023-10-31 | 2024-03-19 | 深圳市乾行达科技有限公司 | Method and device for determining landing buffer mechanism parameters based on buffer inclination angle variable |
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