CN110360259A - A kind of vibration reduction and cushioning structure and missile equipment applied to Sensitive Apparatus - Google Patents
A kind of vibration reduction and cushioning structure and missile equipment applied to Sensitive Apparatus Download PDFInfo
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- CN110360259A CN110360259A CN201910641785.3A CN201910641785A CN110360259A CN 110360259 A CN110360259 A CN 110360259A CN 201910641785 A CN201910641785 A CN 201910641785A CN 110360259 A CN110360259 A CN 110360259A
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- Prior art keywords
- measurement unit
- inertial measurement
- sensitive apparatus
- vibration reduction
- unit shell
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
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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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/128—Vibration-dampers; Shock-absorbers using plastic deformation of members characterised by the members, e.g. a flat strap, yielding through stretching, pulling apart
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a kind of vibration reduction and cushioning structures and missile equipment applied to Sensitive Apparatus, from core Sensitive Apparatus grade, component-level and system-level angle are protected, for low-and high-frequency bandwidth impact energy, high impedance is selected to filter energy-absorbing composite material on material, the system structure oscillation damping method combined in structure using multilayer dielectricity vibration isolation and polynary vibration damping, improve low-and high-frequency impact energy assimilation effect, it is suitable for the protection to Sensitive Apparatus, impact force direction is from system-level to component-level, core Sensitive Apparatus grade is arrived again, pass through being passed to decaying step by step for Shock stress Wave, finally decay to the impact tolerance requirement for meeting core inertia device.Whole encapsulating is carried out using local epoxy compound material to reinforce, improve the overall stiffness and intensity of key core device, connection flexible connection for core Sensitive Apparatus, the fault-tolerant amount of displacement buffering for guaranteeing core Sensitive Apparatus, avoid as connection rigidity it is too strong caused by pull under local device impact or even the failure that falls off.
Description
Technical field
The invention belongs to inertial navigation system fields, and in particular to a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus and
Missile equipment.
Background technique
In order to meet guided munition high-precision, miniaturization and inexpensive direction growth requirement, various countries greatly develop collection at present
Guidance controls the overall-in-one control schema unit being integrated, the inertia such as accelerometer, gyroscope in Inertial Measurement Unit (IMU)
Device is mostly mechanically that, using cavity or cantilever design form, be easily hit loading effect, and device performance is caused to reduce very
It is the most vulnerable position of product to the possibility of failure.Traditional shock resistance method is to apply damper, the punching of this method centering low frequency
Hitting energy has preferable attenuating, but fails to carry out effective attenuation to high-frequency percussion stress wave.It is analyzed according to data, inertia measurement list
The shock-sensitive region of member is high frequency 10kHz or so, need to effectively be decayed to high-frequency percussion stress wave and impact energy, no
The secondary damage of stress wave can be then subjected to impact.Meanwhile traditional shock resistance strategy is only for core devices Inertial Measurement Unit exhibition
It opens, not from vibration reduction and cushioning from the point of view of system-part-device, therefore shock resistance is ineffective.High overload surge guard technology
It so far is still the technical bottleneck for restricting guided munition.
Summary of the invention
For in the prior art the technical issues of, the present invention provides a kind of vibration reduction and cushioning structures applied to Sensitive Apparatus
And missile equipment, its object is to solve above-mentioned technical problem.
In order to solve the above technical problems, the present invention is resolved by the following technical programs:
A kind of vibration reduction and cushioning structure applied to Sensitive Apparatus, including Inertial Measurement Unit shell and apparatus casing, it is sensitive
Device is arranged in the Inertial Measurement Unit shell, and the Inertial Measurement Unit shell is arranged in apparatus casing, in which:
It is connected between Sensitive Apparatus and the Inertial Measurement Unit shell by flexible material, and the Inertial Measurement Unit
Enclosure interior encapsulating has epoxy composite material, and epoxy composite material is used for Sensitive Apparatus sealing in the Inertial Measurement Unit shell
In；
Buffer shock-absorbing structure, the buffer shock-absorbing are provided between the Inertial Measurement Unit shell and the apparatus casing
Structure is the polyurethane compound material being potted between Inertial Measurement Unit shell and apparatus casing, or is arranged in Inertial Measurement Unit
Damping mat between shell and apparatus casing；
Damping mat is additionally provided on the outside of the apparatus casing.
Further, the density of the epoxy composite material is 0.8-1.0g/cm3。
Further, the density of the polyurethane compound material is 0.12-0.3g/cm3。
Further, the flexible material is MC nylon screw and MC nylon stud.
Further, the damping mat between the Inertial Measurement Unit shell and apparatus casing includes MC nylon cushion and honeycomb
Foamed aluminium, and along the direction of impact, the MC nylon cushion is first set, then the cell foams aluminium is arranged.
Further, when shock wave spectral pattern is the shock response spectrum of long bandwidth, increase MC nylon cushion and account for Inertial Measurement Unit shell
The accounting of damping mat between body and apparatus casing, or selecting density is 0.12-0.21g/cm3Polyurethane compound material；Work as punching
When hitting the shock response spectrum that wave spectrum type is narrow bandwidth, increases cell foams aluminium and account for the resistance between Inertial Measurement Unit shell and apparatus casing
The accounting of Buddhist nun's pad, or selecting density is 0.22-0.3g/cm3Polyurethane compound material.
Further, the damping mat on the outside of the apparatus casing includes MC nylon cushion and wire cushion blocking, and along impact
Direction, the wire cushion blocking is first set, then the MC nylon cushion is arranged.
Further, when shock wave spectral pattern is the shock response spectrum of long bandwidth, increase MC nylon cushion and account on the outside of apparatus casing
The accounting of damping mat, or selecting density is 0.12-0.21g/cm3Polyurethane compound material；When shock wave spectral pattern is narrow bandwidth
When shock response spectrum, increase the accounting that wire cushion blocking accounts for the damping mat on the outside of apparatus casing, or selecting density is 0.22-0.3g/
cm3Polyurethane compound material.
A kind of missile equipment is surveyed including internal weapon bays, the Inertial Measurement Unit being arranged in the internal weapon bays and setting in inertia
The intracorporal several Sensitive Apparatuses of cell enclosure are measured, the vibration reduction and cushioning structure of the missile equipment applies the vibration reduction and cushioning structure.
Further, the Sensitive Apparatus includes gyroscope, accelerometer and printed board assembly.
Compared with prior art, the present invention at least has the advantages that the present invention is a kind of applied to Sensitive Apparatus
Vibration reduction and cushioning structure is connected between Sensitive Apparatus and Inertial Measurement Unit shell by flexible material, and in Inertial Measurement Unit
Enclosure interior encapsulating has epoxy composite material, by epoxy composite material by Sensitive Apparatus sealing；Inertial Measurement Unit shell with set
Encapsulating has polyurethane compound material between standby shell, or damping mat is arranged between Inertial Measurement Unit shell and apparatus casing；If
Damping mat is provided between standby shell and the other equipment being in contact with it.I.e. the present invention from core Sensitive Apparatus grade, component-level and
System-level angle is protected, and for low-and high-frequency bandwidth impact energy, selects high impedance to filter energy-absorbing composite material on material,
The system structure oscillation damping method combined in structure using multilayer dielectricity vibration isolation and polynary vibration damping improves the suction of low-and high-frequency impact energy
It produces effects fruit, is suitable for the protection to Sensitive Apparatus, impact force direction is from system-level to component-level, then arrives core Sensitive Apparatus grade,
The impact for meeting core inertia device tolerance requirement is finally decayed to decaying step by step by being passed to for Shock stress Wave.Using
Local epoxy compound material carries out whole encapsulating and reinforces, and improves the overall stiffness and intensity of key core device, for core sensitivity
The connection of device is flexibly connected, and guarantees the fault-tolerant amount of displacement buffering of core Sensitive Apparatus, avoids making by force very much due to connection rigidity
At local device impact under pull or even the failure that falls off, the low-frequency range stress of improvement internal core device.It is answered in impact
In the transmittance process of Reeb, by the stress wave reflection between level interface, damping layer internal stress wave refraction, resisting medium is to impact energy
Sorption enhanced and dissipation are measured, achievees the purpose that the impact energy that decays.There is MC nylon cushion good wave impedance and impact energy to inhale
Yield, and that cost is relatively low is easy to process, can be used as ideal nonmetallic vibration reduction and cushioning material；Cell foams aluminium has low-quality, height
Impact energy attenuation coefficient is good metal shock reducing padded coaming；The density of polyurethane compound material is 0.12- in potting compound
0.3g/cm3, density is smaller, and energy-absorbing buffering effect is good, and encapsulating fillibility is high, has both lightweight, porous and S. E. A. Gao Te
Point, the density of epoxy composite material are 0.8-1.0g/cm3, it is high density, high intensity and corrosion-resistant ageing-resistant, for local device
The reinforcing enabling capabilities of part are strong.The present invention uses the knot of high-damping MC nylon cushion and porous metals isolation mounting (cell foams aluminium)
It closes, the cost of material is low and installation easy to process, is especially suitable for the requirement of ammunition products low cost, and generalization is strong；Of the invention is anti-
The polynary vibration reduction and cushioning structure of high overload can flexibly be changed according to the actual size and mounting means for being designed structure space, be resisted
Impact effect facilitates assessment prediction, can be widely applied to the surge guard of sorts of systems grade product, and method applicability is strong.
Further, when shock wave spectral pattern is the shock response spectrum of long bandwidth, increase MC nylon cushion and account for Inertial Measurement Unit shell
The accounting of damping mat between body and apparatus casing, or selecting density is 0.12-0.21g/cm3Polyurethane compound material, favorably
In the overall energy absorbing efficiency of the system of raising；When shock wave spectral pattern is the shock response spectrum of narrow bandwidth, increases cell foams aluminium and account for inertia
The accounting of damping mat between measuring unit shell and apparatus casing, or selecting density is 0.22-0.3g/cm3Polyurethane it is multiple
Material is closed, is conducive to improve stress wave attentuation effect.
Further, when shock wave spectral pattern is the shock response spectrum of long bandwidth, increase MC nylon cushion and account on the outside of apparatus casing
The accounting of damping mat, or selecting density is 0.12-0.21g/cm3Polyurethane compound material, be conducive to the overall of raising system and inhale
It can efficiency；When shock wave spectral pattern is the shock response spectrum of narrow bandwidth, increases wire cushion blocking and account for the damping mat on the outside of apparatus casing
Accounting, or select density be 0.22-0.3g/cm3Polyurethane compound material, be conducive to improve stress wave attentuation effect.
A kind of missile equipment of the present invention, protects inertia measurement Sensitive Apparatus, internal using epoxy composite potting compound
Portion's device encapsulating keeps its solidification whole, improves integral strength and rigidity, avoid circuit element, printed board etc. big
The opposite changing of the relative positions is generated under percussion.Using the high compound potting compound of wave resistance polyurethane, incident stress wave of decaying, energy-absorbing reduces stress
Crest value, while considering the wave reflection interfacial effect of anisotropic medium, using different materials medium vibration isolation, that is, use MC nylon vibration damping
The combination of pad and cell foams aluminium places sequence to decision according to impact, makes incident blast wave first through cell foams aluminium
Again through the further energy dissipatinga attenuation of MC nylon cushion blocking after scatter attenuation energy.Install damping vibration attenuation additional up and down between internal weapon bays section
Pad, and reserved buffer gap, damped harmonic oscillator system is collectively formed in upper and lower cushion blocking and Inertial Measurement Unit bay section, by subtracting
The blastic deformation of material of shaking extends release time of impact energy, drags down incident shock loading peak value.To sum up, of the invention anti-
High overload vibration reduction and cushioning structure can reach good damping cushion effect.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate more clearly of the technical solution in the specific embodiment of the invention, specific embodiment will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is some realities of the invention
Mode is applied, it for those of ordinary skill in the art, without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the polynary vibration reduction and cushioning schematic illustration of structure of the invention；
Fig. 2 is the energy-absorbing buffering schematic illustration of damping vibration attenuation cushion material in the present invention；
Fig. 3 is missile equipment overall-in-one control schema unit surge guard schematic diagram of the present invention.
In figure: 1, the first MC nylon cushion；2, internal weapon bays；3, MC nylon screw；4, printed board assembly；5, the 2nd MC nylon cushion；
6, the first cell foams aluminium；7, the first wire resilient cushion；8, the second wire resilient cushion；9, shell；10, the second cell foams
Aluminium；11, the 3rd MC nylon cushion；12, MC nylon stud；13, the 4th MC nylon cushion；14, polyurethane compound material；15, the first epoxy
Compound material；16, the second epoxy composite material.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
As a certain preferred embodiment of the invention, a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus, be applied to pair
Sensitive Apparatus in Inertial Measurement Unit is protected, skilled person will appreciate that, Sensitive Apparatus includes gyroscope, acceleration
Meter and printed board assembly etc..Sensitive Apparatus is arranged in Inertial Measurement Unit shell, and the setting of Inertial Measurement Unit shell is being used for
In the apparatus casing for installing Inertial Measurement Unit.
Vibration reduction and cushioning structure of the invention using three-level protect, i.e., from device level, component-level and it is system-level protected, have
Body is as follows:
Device level protection: the connection between Sensitive Apparatus and Inertial Measurement Unit shell is connected using flexible material, connection
Inertial Measurement Unit enclosure interior is potted using epoxy composite material afterwards；Specifically, flexible material is MC Buddhist nun in the present invention
Imperial screw and MC nylon stud, the density of epoxy composite material are 0.12-0.3g/cm3；
Component-level protection: being potted between Inertial Measurement Unit shell and apparatus casing using polyurethane compound material, or
Vibration damping is carried out using damping mat；The density of polyurethane compound material is 0.12-0.3g/cm3；Specifically, damping mat includes MC nylon
Pad and cell foams aluminium, and along the direction of impact force, MC nylon cushion is first set, then cell foams aluminium is arranged, for different impacts
Spectral pattern carry out loading pattern and damping mat thickness adjustment, when shock wave spectral pattern be long bandwidth shock response spectrum when, impact gross energy compared with
Greatly, based on buffering energy-absorbing, therefore increase MC nylon cushion and account for the damping mat between Inertial Measurement Unit shell and apparatus casing
Accounting, or selecting density is 0.12-0.21g/cm3Polyurethane compound material, be conducive to the overall energy absorbing efficiency of raising system；When
When shock wave spectral pattern is the shock response spectrum of narrow bandwidth, large impact magnitude, overall impact energy is moderate, the secondary damage of high-frequency percussion stress wave
Hurt that accounting is larger, the reinforcing vibration isolation of Ying Jiaqiang internal core Sensitive Apparatus, and the dissipation effects such as stress wave reflection, refraction are taken into account,
The vibration isolation material of three layers of even more multilayer can be increased to by reinforcing multilayer dielectricity vibration isolation effect, referring concurrently to stress wave come to
By the ascending installation of medium wave impedance, stress wave attentuation effect is improved, increases cell foams aluminium and accounts for Inertial Measurement Unit shell
The accounting of damping mat between apparatus casing, or selecting density is 0.22-0.3g/cm3Polyurethane compound material；
System-level protection: carrying out vibration damping using damping mat between apparatus casing and the other equipment being in contact with it, specifically,
Damping mat includes MC nylon cushion and wire cushion blocking, and along the direction of impact force, wire cushion blocking is first arranged, then MC is arranged
Nylon cushion carries out loading pattern and damping mat thickness adjustment for different impact spectral patterns, similarly, when shock wave spectral pattern is long bandwidth
Shock response spectrum when, increase MC nylon cushion and account for the accounting of the damping mat on the outside of apparatus casing, or selecting density is 0.12-0.21g/
cm3Polyurethane compound material；When shock wave spectral pattern is the shock response spectrum of narrow bandwidth, increases wire cushion blocking and account for outside apparatus casing
The accounting of the damping mat of side, or selecting density is 0.22-0.3g/cm3Polyurethane compound material.
It is as shown in Figure 1 a kind of schematic illustration of the vibration reduction and cushioning structure applied to Sensitive Apparatus of the present invention, table in figure
Polynary vibration reduction and cushioning is shown from device level to component-level again to system-level triple protection frameworks, the shell where Sensitive Apparatus
Interior encapsulating has epoxy composite material, and illustrates that taking for multilayer dielectricity vibration isolation puts layout, and layout is put in taking for so-called multilayer dielectricity vibration isolation
The component-level protection that buffer medium 1 and buffer medium 2 are realized i.e. in figure, also realizes that component-level is anti-by encapsulating polyurethane compound material
The system-level protection that shield, buffer medium 3 and buffer medium 4 are realized.As it can be seen that by the direction of impact force, the biography of Shock stress Wave
Enter and decay step by step, II grade of stress wave decaying is realized by system-level protection, is realizing I grade of stress wave by component-level protection
Decaying finally decays to the impact tolerance requirement for meeting core inertia device (i.e. Sensitive Apparatus).
It is illustrated in figure 2 the buffering absorbing principle signal of each layer damping vibration attenuation material, under impact force, impact device shell
(i.e. rigid layer) generates Shock stress Wave, and Shock stress Wave passes through system-level, component-level and device level interface in transmittance process
Between stress wave reflection, i.e. the reflection of apparatus casing and Inertial Measurement Unit shell to Shock stress Wave；Damping layer internal stress wave
Refraction, i.e. the refraction of buffer medium and polyurethane compound material to Shock stress Wave, damping buffering medium impact energy, which absorbs, to be turned
Change and dissipate, achieve the purpose that the impact energy that decays, the Shock stress Wave after decaying eventually arrives in Inertial Measurement Unit shell
Epoxy composite material sealing layer when, sealing layer further protects Sensitive Apparatus.MC nylon cushion has good wave resistance
Anti- and impact energy absorptivity, and that cost is relatively low is easy to process, can be used as ideal nonmetallic vibration reduction and cushioning material, cell foams
Aluminium has low-quality, HI high impact energy attenuation coefficient.Polyurethane composite foam material has both lightweight, porous, energy absorption in potting compound
The high feature of rate, as external cavity encapsulating preferred material, and epoxy composite material is then high density, high intensity, for local device
Reinforcing enabling capabilities it is strong.
It is illustrated in figure 3 the concrete engineering application of missile equipment overall-in-one control schema unit surge guard of the present invention, that is, is applied
Vibration reduction and cushioning structure of the invention carries out protection vibration damping, and overall-in-one control schema unit block is by shell 9, MC nylon screw 3, printed board
Component 4, MC nylon stud 12 assemble, and include wherein Inertial Measurement Unit and shock-sensitive in printed board assembly 4 and shell 9
Device.Overall-in-one control schema unit is fitted into internal weapon bays 2, and magazine 2 is apparatus casing, and entire internal weapon bays bears the quick-fried medicine upward by bottom
Impact force can work normally to guarantee core inertial measurement unit and shock-sensitive device under impact, using of the invention
Vibration reduction and cushioning structure is protected, and is embodied as follows:
(1) device level is protected: including core inertial measurement unit and Sensitive Apparatus, sensitivity in printed board assembly 4 and shell 9
Device includes gyroscope, accelerometer and electronic component etc., and connection type uses MC nylon screw 3 and MC as shown in Figure 3
12 lap joint frame of nylon stud is constituted, and has certain elastic buffer distortion allowance, the first epoxy composite material is respectively adopted in inside
Integral rigidity is reinforced in 16 encapsulating of 15 encapsulatings and the second epoxy composite material.
(2) component-level is protected: for overall-in-one control schema unit, using the 2nd MC nylon cushion 5, the 3rd MC nylon cushion 11, the
Two layers of medium anti-vibration and shock mode that one cell foams aluminium 6 and the second cell foams aluminium 10 combine, specifically, as shown in figure 3,
Using the two-way attenuating of placement proof stress wave symmetrical above and below in the air, according to impact direction, wave resistance size and system
Attenuating assessment, bottom end are the first cell foams aluminium 6, dispose the 2nd MC nylon cushion 5 on the first cell foams aluminium 6, guarantee to decline
Subtract coefficient maximum.
As shown in figure 3,14 encapsulating of polyurethane compound material is used in 9 outer wall top internal weapon bays of shell, for overall-in-one control schema list
Member plays the purpose of top reinforcing and buffering energy-absorbing.
(3) between adjacent internal weapon bays 2 plus the first MC nylon cushion 1, the 4th MC nylon cushion 13, first system-level protection: are set
Wire resilient cushion 7 and the first wire resilient cushion 8, specifically, as shown in figure 3, the first MC nylon cushion 1 and the first wire subtract
It shakes pad 8 and forms upper vibration absorber, the 4th MC nylon cushion 13 and the first wire resilient cushion 7 form lower vibration absorber, two groups of vibration dampings
The setting of device guarantees whole bay section under impact slow so that constitute simple harmonic oscillator system up and down between adjacent 2 bay section of internal weapon bays
Punching, adjustment assembly pretightning force and wire resilient cushion decrement when installation, to ensure that vibration insulating system can work model in effective elasticity
In enclosing.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus, it is characterised in that: including Inertial Measurement Unit shell and equipment
Shell, Sensitive Apparatus are arranged in the Inertial Measurement Unit shell, and the Inertial Measurement Unit shell is arranged in apparatus casing
It is interior, in which:
It is connected between Sensitive Apparatus and the Inertial Measurement Unit shell by flexible material, and the Inertial Measurement Unit shell
Internal encapsulating has epoxy composite material, and epoxy composite material is used for Sensitive Apparatus sealing in the Inertial Measurement Unit shell；
Buffer shock-absorbing structure, the buffer shock-absorbing structure are provided between the Inertial Measurement Unit shell and the apparatus casing
For the polyurethane compound material being potted between Inertial Measurement Unit shell and apparatus casing, or it is arranged in Inertial Measurement Unit shell
Damping mat between apparatus casing；
Damping mat is additionally provided on the outside of the apparatus casing.
2. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 1, it is characterised in that: the epoxy
The density of compound material is 0.8-1.0g/cm3。
3. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 1, it is characterised in that: the poly- ammonia
The density of ester compound material is 0.12-0.3g/cm3。
4. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 1, it is characterised in that: the flexibility
Material is MC nylon screw and MC nylon stud.
5. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 3, it is characterised in that: the inertia
Damping mat between measuring unit shell and apparatus casing includes MC nylon cushion and cell foams aluminium, and along the direction of impact, first
The MC nylon cushion is set, then the cell foams aluminium is set.
6. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 5, it is characterised in that: work as shock wave
When spectral pattern is the shock response spectrum of long bandwidth, increases MC nylon cushion and account for the damping mat between Inertial Measurement Unit shell and apparatus casing
Accounting, or selecting density is 0.12-0.21g/cm3Polyurethane compound material；When shock wave spectral pattern is the shock response spectrum of narrow bandwidth,
Increase the accounting that cell foams aluminium accounts for the damping mat between Inertial Measurement Unit shell and apparatus casing, or selection density is
0.22-0.3g/cm3Polyurethane compound material.
7. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 3, it is characterised in that: the equipment
The damping mat of hull outside includes MC nylon cushion and wire cushion blocking, and along the direction of impact, and the wire is first arranged and subtracts
Vibration pad, then the MC nylon cushion is set.
8. a kind of vibration reduction and cushioning structure applied to Sensitive Apparatus according to claim 7, it is characterised in that: work as shock wave
When spectral pattern is the shock response spectrum of long bandwidth, increase the accounting that MC nylon cushion accounts for the damping mat on the outside of apparatus casing, or selection density is
0.12-0.21g/cm3Polyurethane compound material；When shock wave spectral pattern is the shock response spectrum of narrow bandwidth, increase wire cushion blocking
The accounting of the damping mat on the outside of apparatus casing is accounted for, or selecting density is 0.22-0.3g/cm3Polyurethane compound material.
9. a kind of missile equipment, it is characterised in that: including internal weapon bays, the Inertial Measurement Unit being arranged in the internal weapon bays and setting
Such as claim 1 is applied in the vibration reduction and cushioning structure of the intracorporal several Sensitive Apparatuses of Inertial Measurement Unit shell, the missile equipment
~8 described in any item vibration reduction and cushioning structures.
10. a kind of missile equipment according to claim 9, it is characterised in that: the Sensitive Apparatus includes gyroscope, accelerates
Degree meter and printed board assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641785.3A CN110360259B (en) | 2019-07-16 | 2019-07-16 | Vibration reduction buffer structure applied to sensitive device and missile-borne equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641785.3A CN110360259B (en) | 2019-07-16 | 2019-07-16 | Vibration reduction buffer structure applied to sensitive device and missile-borne equipment |
Publications (2)
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| CN111237370A (en) * | 2020-02-03 | 2020-06-05 | 中北大学 | High-g-value impact acceleration buffering device and buffering method and application |
| CN111397601A (en) * | 2020-04-10 | 2020-07-10 | 中国兵器工业集团第二一四研究所苏州研发中心 | Little inertia measurement unit shock-resistant damping structure and damping system |
| CN112964253A (en) * | 2021-05-18 | 2021-06-15 | 北京三快在线科技有限公司 | Vibration reduction mechanism of inertia measurement assembly, flight control inertia measurement assembly and aircraft |
| CN113029122A (en) * | 2021-03-12 | 2021-06-25 | 湖南亿诺胜精密仪器有限公司 | Jitter dissipation and vibration elimination device for mechanically-dithered laser gyroscope |
| CN113514063A (en) * | 2021-06-21 | 2021-10-19 | 北京自动化控制设备研究所 | MEMS micro inertial navigation structure |
| CN115342700A (en) * | 2022-07-08 | 2022-11-15 | 北京理工大学重庆创新中心 | Design method of non-crushing type explosion-proof structure and non-crushing type explosion-proof structure |
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| CN113514063A (en) * | 2021-06-21 | 2021-10-19 | 北京自动化控制设备研究所 | MEMS micro inertial navigation structure |
| CN115342700A (en) * | 2022-07-08 | 2022-11-15 | 北京理工大学重庆创新中心 | Design method of non-crushing type explosion-proof structure and non-crushing type explosion-proof structure |
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