CN105240433B - High-energy-consumption viscoelastic impact-resistant landing shock absorber - Google Patents
High-energy-consumption viscoelastic impact-resistant landing shock absorber Download PDFInfo
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- CN105240433B CN105240433B CN201410244491.4A CN201410244491A CN105240433B CN 105240433 B CN105240433 B CN 105240433B CN 201410244491 A CN201410244491 A CN 201410244491A CN 105240433 B CN105240433 B CN 105240433B
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Abstract
The invention provides a high-energy-consumption viscoelastic impact-resistant landing shock absorber. The high-energy-consumption viscoelastic impact-resistant landing shock absorber is mainly formed by combining a specially-made high-energy-consumption viscoelastic rod shock absorption framework with viscoelastic curved-surface shock absorption connecting plates. According to the overall structure, the spatial shock absorption framework is formed by twelve high-energy-consumption viscoelastic rods in a crossed mode, a middle sphere is a protected impact-free component, the six viscoelastic curved-surface connecting plates are symmetrically installed on the protected component, and the two high-energy-consumption viscoelastic rods which are connected in a mutually perpendicular and crossed mode are connected with the outer side faces of the viscoelastic curved-surface connecting plates. According to the shock absorber, the high-energy-consumption viscoelastic rods fall to the ground firstly during high-altitude falling, energy is dissipated through the whole viscoelastic rod shock absorption framework, and thus impact to the protected part is reduced; the outer sides of the viscoelastic curved-surface connecting plates are connected with the corresponding viscoelastic rods, the inner sides of the viscoelastic curved-surface connecting plates are curved surfaces and make contact with the protected component, in this way, stress of the contact surface of the protected component can be even, and the acting force transmitted to the protected component by the high-energy-consumption viscoelastic rods is effectively dispersed.
Description
Technical field
The invention belongs to Aero-Space antivibration area, and in particular to a kind of high-energy consumption viscoelastic shock resistance landing vibration damping
Device.
Background technology
Under many occasions need that military project precision instrument is jettisoninged to ground, such as field operation alignment system by aircraft high-altitude,
Precision instrument can produce huge vibration when throwing lower landing from high-altitude.When instrument Crater face, brute force attack can be subject to, by force
Strong shock will cause precision instrument to fail or destroy.Therefore, when needing to consider its landing after precision instrument is jettisoninged from high-altitude
The brute force attack vibration being subject to, and corresponding shock resistance vibration reducing measure is taken it, to reduce the vibratory response of precision instrument, carry
High its high-altitude is jettisoninged survival ability.At present most of airborn landing vibration absorbers are subtracted using pressure buffer and parachute buffering
Little impact shock, pressure buffer is the installation air type buffer on equipment, but its volume is larger, and effectiveness in vibration suppression easily receives landform shadow
Ring, while also being difficult to realize recycling；Buffering effect using parachute buffer unit is preferable, but the installation cost is higher,
And it is easy to hang on branch, easily it is found, target is obvious.Shortcoming of the present invention exactly for traditional landing vibration absorber is carried out
A kind of high-altitude jettisoning landing shock absorber, it is desirable to its small volume, effectiveness in vibration suppression are excellent, disguised strong, cheap.The present invention
The high-energy consumption viscoelastic shock resistance landing shock absorber developed from falling from high altitude when high-energy consumption viscoelastic bar first land, by whole
Visco-Elastic Rods vibration damping framework carrys out dissipation energy, reduces the impact to precision instrument；Viscoplasticity curved surface connecting plate inner side is curved surface, is had
Dispersion high-energy consumption viscoelastic rod member in effect ground passes to the active force of precision instrument, and protection precision instrument is without damage, and simple structure,
Small volume, effectiveness in vibration suppression be excellent, disguised strong (branch will not be hung), cheap.
The content of the invention
Technical problem：The invention provides a kind of impact landing shock absorber made by high-energy consumption viscoelastic material, the dress
Put can effective dissipation energy, reduce protected portion part from falling from high altitude lands when impact forces, it is ensured that wherein precision instrument
Device is not damaged by.
Technical scheme：The high-energy consumption viscoelastic of the present invention impacts landing shock absorber mainly by special high-energy consumption viscoelastic bar
Vibration damping framework and viscoplasticity curved surface vibration damping connecting plate combine and constitute.12 high-energy consumption viscoelastic bars intersect to form space and subtract
Shake framework, and per two, orthogonal cross-coupled high-energy consumption viscoelastic bar is connected with viscoplasticity curved surface connecting plate lateral surface
(the global shape structure of high-energy consumption viscoelastic impact landing shock absorber is shown in Fig. 1).
The wherein described device high-energy consumption viscoelastic bar vibration damping framework is by the high-energy consumption viscoelastic material of 12 Gents
What the cylinder Visco-Elastic Rods that material makes were intersected to form.Six faces of protected portion part viscoplasticity curved surface connecting plate outside with two
Visco-Elastic Rods square crossing links together, accompanying drawing (b) be shock absorber section detail drawing, accompanying drawing (c) be A-A, section B-B detail drawing, often
Visco-Elastic Rods simultaneously are all vertically intersected on a node with the Visco-Elastic Rods of adjacent surface, intersecting for one group per three Visco-Elastic Rods
In a bit, by being combined into a space vibration damping framework with 12 Visco-Elastic Rods of upper type.Jettisoning from high-altitude in the device
Land when ground, no matter at any angle, any mode when landing landed in advance with high-energy consumption viscoelastic bar, middle quilt
Guard block is not directly contacted with ground, and the dynamic impact problem load that Visco-Elastic Rods are subject to directly is transmitted by Visco-Elastic Rods connecting node
To whole Visco-Elastic Rods vibration damping framework, the vibrational energy under dissipation brute force attack, reduce the percussion to protected portion part.
It is plane, cross-coupled height orthogonal with two on the outside of the described device viscoplasticity curved surface vibration damping connecting plate
Power consumption Visco-Elastic Rods connection (bonding or vulcanize), viscoplasticity curved surface connecting plate inner side is curved surface, and protected portion part sphere-contact,
Accompanying drawing (a) contacts detail drawing for protection ball portion with shock absorber section, and it is bent that partial vibration can be passed to viscoplasticity by high-energy consumption viscoelastic bar
Face connecting plate, viscoplasticity curved surface connecting plate can effectively disperse Visco-Elastic Rods to pass to the vibration force of protected portion part so that quilt
Guard block contact surface uniform force, the vibrational energy while viscoplasticity curved surface connecting plate dissipates or isolates.
Described device critical piece Visco-Elastic Rods and viscoplasticity curved surface connecting plate adopt the highly energy-consuming of especial manufacture
Viscoelastic material, the material key capability of energy dissipation fissipation factor is under low frequency (0.1Hz～50Hz) and normal temperature (- 20 DEG C～50 DEG C)
Between 0.55～1.1, durability can reach 60 years, can effectively dissipate and vibrational energy and isolate the transmission of vibrational energy.
Beneficial effect：Ineffective which kind of mode of apparatus of the present invention from falling from high altitude in ground when, device can realize with
High-energy consumption viscoelastic bar lands in advance, and impact load is transferred to whole Visco-Elastic Rods by contacting the high-energy consumption viscoelastic bar on ground
Vibration damping framework carrys out dissipation energy, reduces the shock effect to protected portion part.Viscoplasticity curved surface connecting plate connects with protected portion part
Touch, can effectively disperse high-energy consumption viscoelastic rod member to pass to the active force of protected portion part, receive protected portion part contact surface
Power is uniform, while Visco-Elastic Rods and viscoplasticity curved surface connecting plate are made by high dissipation viscoelastic material, dissipation vibrational energy.
Description of the drawings
Fig. 1 is the global shape structural representation that high-energy consumption viscoelastic impacts landing shock absorber.Have in figure：(1) highly energy-consuming
Visco-Elastic Rods；(2) viscoplasticity curved surface connecting plate；(3) protected portion part；(4) ball type of contact surface.(a) is protection ball portion in Fig. 1
Detail drawing is contacted with shock absorber section, (b) is shock absorber section detail drawing, (c) be A-A, section B-B detail drawing.
Specific embodiment
The high-energy consumption viscoelastic shock resistance landing shock absorber of the present invention is mainly by special high-energy consumption viscoelastic bar vibration damping structure
The space force transfer system that frame and viscoplasticity curved surface vibration damping connecting plate combine and constitute.In general structure, 12 highly energy-consumings
Visco-Elastic Rods (1) intersect to form space vibration damping framework, and middle spheroid is to be protected against impact part (3), hang down mutually per two
Straight cross-coupled high-energy consumption viscoelastic bar (1) is connected with viscoplasticity curved surface connecting plate (2) lateral surface.This being designed with is beneficial to
Vibration damping when protected portion part (3) lands, the strength vibrational energy dissipated when landing, and then protect precision instrument, it is to avoid
Destroy.
The device high-energy consumption viscoelastic bar vibration damping framework is 12 circles made by special high-energy consumption viscoelastic material
Cylindricality high-energy consumption viscoelastic bar (1) intersects what is formed.The viscoplasticity curved surface connecting plate in upper six faces of protected portion part (3)
(2) lateral surface links together with the square crossing of two high-energy consumption viscoelastic bars (1), the high-energy consumption viscoelastic bar per one side
(1) all a node is vertically intersected on the high-energy consumption viscoelastic bar (1) of adjacent surface, is per three high-energy consumption viscoelastic bars (1)
One group intersects at a point, and the intersecting mode by more than, 12 Visco-Elastic Rods (1) are combined into a space vibration damping framework (as schemed
1).The device is jettisoninged from high-altitude and is landed when ground, no matter at any angle, any mode is jettisoninged downwards is all viscous with highly energy-consuming
Elastic rod (1) lands at first, and middle protected portion part (3) is not directly contacted with ground, and high-energy consumption viscoelastic bar (1) is dynamic by impact
Power load is directly transferred to whole Visco-Elastic Rods vibration damping structure by contacting the high-energy consumption viscoelastic bar (1) and connecting node on ground
Frame, the vibrational energy of dissipation brute force attack reduces the percussion to protected portion part (3).
Device high-energy consumption viscoelastic curved surface vibration damping connecting plate (2) outside is plane, with two orthogonal interconnections
High-energy consumption viscoelastic bar (1) connection (bonding or vulcanize), viscoplasticity curved surface connecting plate (2) inner side is curved surface, with protected portion
Part (3) sphere-contact.The partial vibration that viscoplasticity curved surface connecting plate (2) is transmitted by high-energy consumption viscoelastic bar (1), viscoplasticity is bent
Face connecting plate can effectively disperse high-energy consumption viscoelastic rod member to pass to the active force of protected portion part (3) so that protected portion
Part (3) ball type of contact surface (4) uniform force, while viscoplasticity curved surface connecting plate (2) dissipation vibrational energy.And then inside protection
Precision instrument is not destroyed.
Device critical piece high-energy consumption viscoelastic bar (1) and viscoplasticity curved surface connecting plate (2) are using especial manufacture
High-energy consumption viscoelastic material, material key capability of energy dissipation fissipation factor low frequency (0.1Hz～50Hz) and normal temperature (- 20 DEG C～
50 DEG C) under be located between 0.55～1.1, durability can reach 60 years, can effectively dissipate and vibrational energy and isolate vibrational energy
Transmission.
Claims (4)
1. high-energy consumption viscoelastic shock resistance landing shock absorber, it is characterised in that：The device is mainly by special high-energy consumption viscoelastic
Bar vibration damping framework and viscoplasticity curved surface vibration damping connecting plate combine and constitute；In general structure, 12 high-energy consumption viscoelastic bars
(1) space vibration damping framework is intersected to form, middle spheroid is protected from impact part (3), it is symmetrical on protected portion part (3)
6 viscoplasticity curved surface connecting plate (2), 2 orthogonal cross-coupled high-energy consumption viscoelastic bars (1) and viscoplasticity curved surface are installed
Connecting plate (2) lateral surface is connected.
2. high-energy consumption viscoelastic shock resistance landing shock absorber according to claim 1, it is characterised in that：High-energy consumption viscoelastic
Bar vibration damping framework and viscoplasticity curved surface vibration damping connecting plate form space force transfer system, no matter with which kind of angle or mode falling from high altitude
During landing, the device is first landed with high-energy consumption viscoelastic bar (1), and protected portion part (3) is not directly contacted with ground, and impact is dynamic
Power load is transferred to whole Visco-Elastic Rods vibration damping framework, and dissipation energy by the high-energy consumption viscoelastic bar (1) on contact ground, subtracts
The little percussion to protected portion part (3).
3. high-energy consumption viscoelastic shock resistance landing shock absorber according to claim 1 and 2, it is characterised in that：Viscoplasticity is bent
Face connecting plate (2) outside is plane, and cross-coupled high-energy consumption viscoelastic bar (1) bonding orthogonal with 2 or sulfuration are connected,
Viscoplasticity curved surface connecting plate (2) inner side is curved surface, with protected portion part (3) sphere-contact, has effectively disperseed highly energy-consuming viscoelastic
Property bar (1) passes to the active force of protected portion part (3) so that protected portion part (3) contact surface uniform force, while viscoplasticity is bent
Face connecting plate (2) dissipation vibrational energy.
4. the high-energy consumption viscoelastic shock resistance landing shock absorber according to claim 1 or 2 or 3, it is characterised in that：The device
Critical piece Visco-Elastic Rods (1) and viscoplasticity curved surface connecting plate (2) adopt high-energy consumption viscoelastic material, the crucial consumption of the material
Energy index fissipation factor is located between 0.55～1.1 at low frequency 0.1Hz～50Hz and -20 DEG C of normal temperature～50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244491.4A CN105240433B (en) | 2014-05-30 | 2014-05-30 | High-energy-consumption viscoelastic impact-resistant landing shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410244491.4A CN105240433B (en) | 2014-05-30 | 2014-05-30 | High-energy-consumption viscoelastic impact-resistant landing shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN105240433A CN105240433A (en) | 2016-01-13 |
| CN105240433B true CN105240433B (en) | 2017-05-10 |
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| CN201410244491.4A Active CN105240433B (en) | 2014-05-30 | 2014-05-30 | High-energy-consumption viscoelastic impact-resistant landing shock absorber |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR767171A (en) * | 1933-01-18 | 1934-07-12 | Protection device for objects thrown from a moving mobile | |
| US3520503A (en) * | 1968-03-05 | 1970-07-14 | Nasa | Omnidirectional multiple impact landing system |
| CN2174423Y (en) * | 1993-05-25 | 1994-08-17 | 魏邦旭 | Emergency landing apparatus |
| JPH08164897A (en) * | 1994-12-13 | 1996-06-25 | Nakamura:Kk | Capsule for rescue |
| CN2296308Y (en) * | 1997-02-19 | 1998-11-04 | 朱信权 | Escaping ball device of craft |
| CN2552809Y (en) * | 2002-05-31 | 2003-05-28 | 王学本 | Ball-body rolling recreational boat |
| CN1907808A (en) * | 2006-08-14 | 2007-02-07 | 贵阳金阳光辉科技开发有限公司 | Aviation lifesaving seat |
-
2014
- 2014-05-30 CN CN201410244491.4A patent/CN105240433B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR767171A (en) * | 1933-01-18 | 1934-07-12 | Protection device for objects thrown from a moving mobile | |
| US3520503A (en) * | 1968-03-05 | 1970-07-14 | Nasa | Omnidirectional multiple impact landing system |
| CN2174423Y (en) * | 1993-05-25 | 1994-08-17 | 魏邦旭 | Emergency landing apparatus |
| JPH08164897A (en) * | 1994-12-13 | 1996-06-25 | Nakamura:Kk | Capsule for rescue |
| CN2296308Y (en) * | 1997-02-19 | 1998-11-04 | 朱信权 | Escaping ball device of craft |
| CN2552809Y (en) * | 2002-05-31 | 2003-05-28 | 王学本 | Ball-body rolling recreational boat |
| CN1907808A (en) * | 2006-08-14 | 2007-02-07 | 贵阳金阳光辉科技开发有限公司 | Aviation lifesaving seat |
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| Publication number | Publication date |
|---|---|
| CN105240433A (en) | 2016-01-13 |
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Addressee: Nanjing Dong Rui shockproof control Science and Technology Ltd. Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention |
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