CN106438825A - Particle and spring combined type bumper - Google Patents
Particle and spring combined type bumper Download PDFInfo
- Publication number
- CN106438825A CN106438825A CN201610807034.0A CN201610807034A CN106438825A CN 106438825 A CN106438825 A CN 106438825A CN 201610807034 A CN201610807034 A CN 201610807034A CN 106438825 A CN106438825 A CN 106438825A
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- Prior art keywords
- granule
- buffer
- groups
- box
- particle
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a particle and spring combined type bumper. The particle and spring combined type bumper comprises a spring baffle, an outer cylinder, an inner cylinder and a particle group, wherein the spring baffle is arranged at a closed end inside the outer cylinder; the inner cylinder is arranged at a free end inside the outer cylinder; and the particle group is arranged inside the outer cylinder and between the spring baffle and the inner cylinder. The particle and spring combined type bumper disclosed by the invention can be developed as a multi-stage particle and spring combined type bumper. According to the particle and spring combined type bumper disclosed by the invention, a particle body damping method is applied to an aerospace lander bumper for the first time, so application of the lander damping technology is widened. The particle and spring combined type bumper disclosed by the invention has the advantages of being simple in structure, having a particle body damping type vibration absorption bandwidth, having no possibility of being weakened in damping performance with time and the like. Meanwhile, the particle body is simple in structure, low in environmental sensitivity and especially applicable to a severe extraterrestrial landing environment, so the particle and spring combined type bumper can make up the application defects of current lander bumpers.
Description
Technical field
The invention belongs to aerospace vehicle landing technical field, the box-like aircraft buffering of specifically a kind of granule-groups of springs
Device.
Background technology
In aerospace field, soft landing mechanism arrangement, adopting landing leg mechanism form more.The buffer of landing lower limb delays
Punching method mainly includes permanent deformation method and damped method, and the former includes porous material deformation method, composite deformation method, metal
Tie rods etc., the latter includes hydraulic damping method, frictional damping method, electromagnetic damping method etc..Above-mentioned buffered forms majority is once
Property and based on passive control, be difficult to meet for unknown star external environment.Therefore, in the urgent need to the buffering of active or half active
Technology can adapt to the change of landing initial condition ensureing buffer capacity.Magnetic flow liquid buffer technology is that currently the only kind can be real
The way to play for time of existing cushion effect semi- active control, by changing the intensity of external magnetic field, carries out and changes the damping of magnetic flow liquid
Characteristic, realizes semi- active control.But its magnetic flow liquid is difficult precise control, and it is to limit it the problems such as liquid seal in space
The drawbacks of application.
Granule damping（Particle Damping）It is to propose the nineties in last century, it changes very to original structure
Little, the damping ratio of structure can be significantly improved, can adapt to the environment of very severe, vibration damping bandwidth, its shock-absorbing capacity simultaneously
Also the advantages of will not reduce in time, has therefore obtained extensive research.Its Energy Dissipation Mechanism is mainly to pass through between granule
And the friction between granule and inwall and collision consumed energy.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of box-like buffer of granule-groups of springs, the utilization of this buffer
Energy Dissipation Mechanism between plastochondria, gives full play to the motion between granule and friction, and the size of granule and material select
Initiative, can meet reusable, high-mechanic and adverse circumstances suitability of landing buffer device etc. require, expand
The active of spacecraft buffer, the development range of half active buffer technology, further increase the performance of buffer.
For achieving the above object, technical scheme is as follows：
A kind of box-like buffer of granule-groups of springs of the present invention, including spring stop, outer tube, inner core, granule group, described bullet
Blind end in described outer tube for the spring baffle plate setting, described inner core is arranged on free end in described outer tube, described granule group
It is arranged in described outer tube, be between spring stop and inner core.
Further, the box-like buffer of described granule-groups of springs is secondary buffer, includes spring stop and buffers and granule
Body group buffers.It is of course also possible to by increasing spring stop quantity, expand to multi-stage buffer, such as, tertiary granule-spring
Combined buffer.
Further, the box-like buffer of described tertiary granule-groups of springs includes gauche form cushion chamber, described two-level spring baffle plate
It is arranged on described gauche form buffering intracavity.If multi-stage buffer, then there is multiple gauche form cushion chambers and multistage spring stop.
Further, described one-level spring stop is different with two-level spring baffle plate rigidity.Using spring rate difference with
And the mobility of granule, make buffer become multiple degrees of freedom isolation damper, reduce buffer buffering acceleration, extend
Granule collision course and time.
Further, described granule group is made up of some granules, and described granule is firm and/or soft granule, adopts
Use hard and soft granule, collision and friction course between granule can be improved, the landing buffer device improving buffer further is delayed
Punching performance.
Further, described granule adopts irregularly shaped, such as rhombus, cylinder and dumbbell shape etc., its purpose
It is used for improving collision and coefficient of friction between granule.
Further, described granule adopts thermo-sensitive material or magnetic-sensitive material, such as marmem, magnetorheological elasticity
Body etc., the control form that can make granule damper, from being passively changed into half actively, improves the shock-absorbing capacity of material damping further.If
Material is marmem, after granule compressible plastic deformation energy-absorbing,（Heat）Shape can be recovered in the presence of magnetic field.
According to magnetorheological elastomer material, the principle that can be changed with applied field strengths using its elastic modelling quantity, by regulation and control
The elastic modelling quantity of granule is to reach the cushion effect controlling buffer and cushion stroke.Can by outside outer tube around inductance coil
Method or increase electric magnet to increase the contact pressure between magnetic granule and then to improve buffer in inner core or outer barrel
Friction energy-dissipating.The method that the present invention adopts is setting lining between granule group and outer tube, is wound around wire outside lining
Circle adjusts the change in the magnetic field of granule group by the electric current of power supply loop.Change using magnetic field adjusts granule bullet
Property modulus, realize adjustment cushion stroke in collision process for the granule and padded coaming.
Granule-groups of springs box-like buffer operation principle of the present invention is that the interaction using granule and spring is delayed
Punching performance, its principal mode is interim stored energy mechanism, the collision between granule and friction that camber of spring is in buffering course,
And granule shape is changed into energy consuming mechanism.When impulsive force very little, all of granule in buffer is due to frictional force
Presence and lock together, granule to impact impact be equivalent to one piece of additional quality, impulsive force is directly delivered to bullet
The enterprising row buffering of spring.With the increase of impulsive force, there is relative motion in granule, and granule starts to flow, between granule
Friction between collision and granule and side wall is violent all the more, and percussion allows for granule and mutually presses together, thus
So that the rubbing action between granule is increased, and then increase energy expenditure, improve the damping ratio of total system.Meanwhile, spring master
Act on and be a kind of interim energy storage original paper, by compression and the bounce-back of spring, promote granule collision and rub, increased
Plastochondria power consumption course.
The box-like buffer of granule-groups of springs of the present invention has advantages below：
1st, first granule damping form is applied in Aero-Space lander buffer, has widened lander buffer technology；
2nd, granule adopts intellectual material, such as magnetic-sensitive material, thermo-sensitive material, buffered forms can be become by passive control methods
Become semi-active control method.
3rd, the box-like buffer structure of granule-groups of springs of the present invention is simple, and has the vibration damping frequency that granule damps form
Bandwidth, the advantages of shock-absorbing capacity also will not reduce in time.Meanwhile, granule structure is simple, and environmentally sensitive property is low, especially
Adapt to land outside severe star environment, compensate for the applicable defect of current lander buffer.
4th, the granule-spring buffer of the present invention, available buffer extensibility is strong, by the selection of appropriate design and granule
Can realize meeting the reusable of landing buffer device, high-mechanic and the adverse circumstances suitability etc. require.
Brief description
Fig. 1 is the secondary granule-spring buffer profile of the present invention；
Fig. 2 is the secondary granule-spring buffer block diagram of Fig. 1（Granule group does not show）；
Fig. 3 is the tertiary granule-spring buffer profile of the present invention；
Fig. 4 is the tertiary granule-spring buffer block diagram of Fig. 2（Granule group does not show）；
Fig. 5 is the intelligent granule-spring buffer of the present invention（Granule group, loop and spring stop do not show）；
Fig. 6 is that Fig. 1 illustrated by the intelligent granule-spring buffer of Fig. 5（Outer tube does not show）；
Fig. 7 is intelligent granule-spring buffer section Fig. 2 of Fig. 5（Outer tube, loop do not show）；
In figure explanation：
11 outer tube；12 inner cores；13 granule groups；14 spring stops；21 outer tube；22 granule groups；23 inner cores；24 one-level spring catch
Plate；25 two-level spring baffle plates；31 inner cores；32 outer tube；33 power supplys（Illustrate）；34 loop；35 spring stops；36 linings；37 intelligence
Can granule group.
Specific embodiment
Below in conjunction with the accompanying drawings, a kind of granule-spring buffer proposed by the present invention is described in detail.
As illustrated in fig. 1 and 2, the box-like buffer of a kind of granule-groups of springs of the present invention, including one-level spring stop 14, outward
Cylinder 11, inner core 12, granule group 13, spring stop 14 is arranged on the blind end in outer tube 11, and inner core 12 is arranged on described outer tube
Free end in 11, described granule group 13 is arranged in described outer tube 11, is between spring stop 14 and inner core 12.When interior
Cylinder 12 is subject to the effect of load that relative motion occurs, and inner core 12 top board extrudes granule group 13, make between granule and with outer
There is relative motion and deformation in cylinder inwall, and then form collision friction power consumption.Before treating that inner core 12 compression is stable, external load delays
Punching is the interphase interaction by granule buffering and spring energy-storage.After disappearing etc. load, granule group 13 degree of compaction reduces,
Grain group 14 amasss and returns to original volume.
As shown in figure 3, in another embodiment, the box-like buffer of granule-groups of springs is multi-stage buffer, such as two grades are delayed
Rush device, the box-like buffer of secondary granule-groups of springs is the knot in order to illustrate the box-like buffer of multi-stage particle-groups of springs herein
Structure and performance, are not offered as the restriction to series.The box-like buffer of secondary granule-groups of springs includes one-level spring stop 25, outer
Cylinder 21, inner core 23, granule group 22, also include two-level spring baffle plate 24 and gauche form cushion chamber（It is parallel on outer tube）.Two grades of bullets
Spring baffle plate 24 is arranged on gauche form buffering intracavity.Using the class fluidity in stress for the granule and on each border of whole cluster of grains
Stress is consistent.Concrete operating principle is to be not up to compression limit formula in one-level spring, because there is the effect of two-stage spring, granule
Between collision and friction more violent, to realize shock-absorbing capacity increase.When one-level spring reaches capacity, two-level spring is persistently made
With granule movement tendency can be changed, and promote particle friction and collision further.For multi-stage buffer, then there are multiple sides
Formula cushion chamber and multistage spring stop.
One-level spring stop 25 is different with two-level spring baffle plate 24 rigidity.Using the difference of spring rate and granule
Mobility, makes buffer become multiple degrees of freedom isolation damper, reduces buffer buffering acceleration, extends granule collision
Course and time.
The either box-like buffer of primary granule-groups of springs or the box-like buffer of multi-stage particle-groups of springs, granule group
14 or granule group 22 by some granules form, granule be firm and/or soft granule, using hard and soft granule, can
Improve collision and friction course between granule, improve the landing buffer device shock-absorbing capacity of buffer further.
Granule adopts irregularly shaped, such as rhombus, cylinder and dumbbell shape etc., and its purpose is used for improving granule
Collision and coefficient of friction between body.
In embodiment three, the box-like buffer of intelligent granule-groups of springs includes spring stop 35, outer tube 32, inner core 31, granule
Group 37, granule adopts thermo-sensitive material or magnetic-sensitive material, such as marmem, magnetic rheology elastic body etc..In cluster of grains
Lining 36 is set between body 37 and outer tube 32, is wound around, in lining 36 outside, the electricity that loop 34 passes through power supply 33 pilot circle 34
The change in the magnetic field of stream adjustment granule group 37.Change using magnetic field adjusts granule bulk modulus, realizes adjustment granule
Cushion stroke in collision process and padded coaming.Loop 34 is powered by power supply 33.Certainly, the granule in embodiment three-
The box-like buffer of groups of springs can also be multi-stage buffer.
Based on description of the preferred embodiment of the present invention it should be apparent that the basis being defined by the appended claims
Invention is not limited only to the specific detail that illustrated in specification above, without departing from present inventive concept or scope to this
Bright many obvious change is equally possible to reach the purpose of the present invention.
Claims (9)
1. a kind of box-like buffer of granule-groups of springs is it is characterised in that include spring stop, outer tube, inner core, granule group, institute
State the blind end that spring stop is arranged in described outer tube, described inner core is arranged on the free end in outer tube, described granule group
It is arranged in described outer tube, between spring stop and inner core.
2. the box-like buffer of granule-groups of springs according to claim 1 is it is characterised in that described granule-groups of springs is box-like
Buffer is multi-stage buffer, and described multi-stage buffer includes spring stop and granule group.
3. the box-like buffer of granule-groups of springs according to claim 2 is it is characterised in that described granule-groups of springs is box-like
Buffer is extended to three-level buffer, and the box-like buffer of described tertiary granule-groups of springs includes one-level spring stop and granule
Body group, also includes two-level spring baffle plate.
4. the box-like buffer of granule-groups of springs according to claim 3 is it is characterised in that described tertiary granule-groups of springs
Box-like buffer also includes gauche form cushion chamber, and described two-level spring baffle plate setting buffers intracavity in described gauche form.
5. the box-like buffer of granule-groups of springs according to claim 3 it is characterised in that described one-level spring stop and
Two-level spring baffle plate rigidity is different.
6. the box-like buffer of intelligent granule-groups of springs according to claim 6 is it is characterised in that described granule adopts
Irregularly shaped.
7. the box-like buffer of granule-groups of springs according to any one of claim 1 to 6 is it is characterised in that described cluster of grains
Body is made up of some granules, and described granule is firm and/or soft granule.
8. the box-like buffer of granule-groups of springs according to claim 6 is it is characterised in that described granule adopts temperature-sensitive
Material or magnetic-sensitive material.
9. the box-like buffer of granule-groups of springs according to claim 8 is it is characterised in that in described granule group and outer
Between cylinder, lining is set, is wound around loop outside lining, and is powered for described loop using power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610807034.0A CN106438825A (en) | 2016-09-07 | 2016-09-07 | Particle and spring combined type bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610807034.0A CN106438825A (en) | 2016-09-07 | 2016-09-07 | Particle and spring combined type bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106438825A true CN106438825A (en) | 2017-02-22 |
Family
ID=58164891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610807034.0A Pending CN106438825A (en) | 2016-09-07 | 2016-09-07 | Particle and spring combined type bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114847A (en) * | 2018-10-30 | 2020-05-08 | 哈尔滨工业大学 | Asteroid surface landing buffer device based on electromagnetism and metal rubber damping |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR648022A (en) * | 1927-06-12 | 1928-12-04 | Knorr Bremse Ag | Shock energy absorption device |
| DE2420754A1 (en) * | 1974-04-29 | 1975-11-06 | Volkswagenwerk Ag | Shock absorber for motor cars - uses spring loaded rod which moves in a chamber filled with small parts of friction material |
| SU1355800A1 (en) * | 1986-02-03 | 1987-11-30 | Н.М.Абачараев | Elastic member |
| WO2011004691A1 (en) * | 2009-07-04 | 2011-01-13 | 友安 裕 | Billiards type base-isolated construction method |
| CN104389944A (en) * | 2014-09-17 | 2015-03-04 | 西安交通大学 | Spring and nanometer particle mixed liquid combined shock absorber |
| CN104632990A (en) * | 2014-12-31 | 2015-05-20 | 中国人民解放军军械工程学院 | Solid particle damper device |
| CN105221641A (en) * | 2015-10-15 | 2016-01-06 | 同济大学 | Semi-active type electromagnetic particle damping shock absorber used for rail vehicle |
-
2016
- 2016-09-07 CN CN201610807034.0A patent/CN106438825A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR648022A (en) * | 1927-06-12 | 1928-12-04 | Knorr Bremse Ag | Shock energy absorption device |
| DE2420754A1 (en) * | 1974-04-29 | 1975-11-06 | Volkswagenwerk Ag | Shock absorber for motor cars - uses spring loaded rod which moves in a chamber filled with small parts of friction material |
| SU1355800A1 (en) * | 1986-02-03 | 1987-11-30 | Н.М.Абачараев | Elastic member |
| WO2011004691A1 (en) * | 2009-07-04 | 2011-01-13 | 友安 裕 | Billiards type base-isolated construction method |
| CN104389944A (en) * | 2014-09-17 | 2015-03-04 | 西安交通大学 | Spring and nanometer particle mixed liquid combined shock absorber |
| CN104632990A (en) * | 2014-12-31 | 2015-05-20 | 中国人民解放军军械工程学院 | Solid particle damper device |
| CN105221641A (en) * | 2015-10-15 | 2016-01-06 | 同济大学 | Semi-active type electromagnetic particle damping shock absorber used for rail vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114847A (en) * | 2018-10-30 | 2020-05-08 | 哈尔滨工业大学 | Asteroid surface landing buffer device based on electromagnetism and metal rubber damping |
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Application publication date: 20170222 |