CN107524744B - A kind of high-damping thermal deformation release device - Google Patents
A kind of high-damping thermal deformation release device Download PDFInfo
- Publication number
- CN107524744B CN107524744B CN201710571625.7A CN201710571625A CN107524744B CN 107524744 B CN107524744 B CN 107524744B CN 201710571625 A CN201710571625 A CN 201710571625A CN 107524744 B CN107524744 B CN 107524744B
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- China
- Prior art keywords
- elastic element
- damping
- pedestal
- thermal deformation
- release device
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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
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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
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
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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
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/022—Springs leaf-like, e.g. of thin, planar-like metal
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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
- F16F2238/00—Type of springs or dampers
- F16F2238/04—Damper
Abstract
The present invention relates to a kind of high-damping thermal deformation release device, described device includes: pedestal (1), elastic element (2), shell (3), damping element (4), attachment base (5)；The lower end and the pedestal (1) of elastic element (2) are connected, the elastic element (2) is vertical with the pedestal (1), the upper end and the attachment base (5) of the elastic element (2) are connected, and the elastic element (2) is greater than the elastic element (2) in the rigidity for being parallel to pedestal (1) direction in the rigidity perpendicular to pedestal (1) direction；Shell (3) is connected with the pedestal (1), for elastic element (2) to be enclosed in the inside of the shell (3)；Damping element (4), it is filled between the elastic element (2) and the shell (3), there are gaps on the contact surface of the damping element (4) and the elastic element (2), the gap is used to adjust the contact area of damping element (4) Yu elastic element (2), and gap volume ratio shared by the damping element (4) is inversely proportional with the damped coefficient of the damping element (4) and the rigidity of elastic element (2).
Description
Technical field
The present invention relates to flexible connection technical field, in particular to a kind of high-damping thermal deformation release devices.
Background technique
Large flat phased array antenna is under orbital environment used by microwave remote sensing spacecraft, by sun irradiation angle
The influence of variation, temperature will appear the fluctuation of certain amplitude.In order to guarantee that lightweight construction, intensity are high, antenna installation frame is big
Mostly use carbon fibre material.And antenna sheet must then use metal material as guarantee electrical property.The thermal expansion of two kinds of materials is special
Property have larger difference, in temperature change, the two thermal deformation is uncoordinated, will lead to structure and buckling deformation occurs, and then makes antenna
Beam position changes, and influences detection performance.Other spacecrafts for carrying precision detection equipment such as Optical remote satellite are also deposited
In similar problem, when two connected structural materials are inconsistent, occurs heat caused by deformation under temperature loading
Stress.When thermal stress is more serious, the working performance of detecting devices can be had an impact.Therefore, it is necessary to use to set sensitivity
Connection between standby not same material carries out special designing.
Currently, since flexible connection allows a degree of relative displacement in a certain direction between connection structure,
It is used to reduce the stress that adjacent structure thermal deformation is formed.Existing flexible structural member is all made of elastomeric metal structure,
Such as T junction component, helical spring.However these flexible structural members are caused by high-frequency vibration generation thermal deformation occurs for structural member
When thermal stress, the relative displacement of flexible structural member is larger, causes to generate higher structural stress, therefore be unable to satisfy inhibition high frequency
The requirement of vibration.
Summary of the invention
Technology of the invention solves the problems, such as: having overcome the deficiencies of the prior art and provide a kind of high-damping thermal deformation release
Device can solve two structural members connected by flexible structural member and cause thermal stress in generation high-frequency vibration generation thermal deformation
When, flexible structural member relative displacement is larger, the problem of causing higher structural stress.
The technical solution of the invention is as follows, a kind of high-damping thermal deformation release device, including pedestal, elastic element, outer
Shell, damping element, attachment base；
The lower end of elastic element and the pedestal are connected, and the elastic element is vertical with the pedestal, the elastic element
Upper end and the attachment base be connected, the elastic element is greater than the elastic element flat in the rigidity perpendicular to pedestal direction
Row is in the rigidity in pedestal direction；
Shell is connected with the pedestal, for elastic element to be enclosed in the inside of the shell；
Damping element is filled between the elastic element and the shell, the damping element and the elastic element
Contact surface on there are gap, the gap is used to adjust the contact area of damping element and elastic element, and the gap is in institute
State the damped coefficient of volume ratio shared by damping element and the damping element and the rigidity inverse ratio of elastic element.
Further, the elastic element is at least two sheet metals, is parallel to each other between the sheet metal.
Further, the sheet metal is being parallel to pedestal more than or equal to sheet metal in the size perpendicular to pedestal direction
5 times of the size in direction.
Further, the material of the damping element is wire, and the shape of the damping element is reticular structure.
Further, each described elastic element includes elastic rod and rod piece seat；
One end of the elastic rod is inlaid into the through-hole of the pedestal, and the other end is inlaid into the through-hole of the rod piece seat
It is interior.
Further, the attachment base includes card cap and end cap；The card cap and the end cap are connected；The end cap and institute
State the connection of rod piece seat.
Further, the elastic rod is cylindrical alloy bar, and the cylinder alloy bar is perpendicular to pedestal direction
Size is greater than or equal to 5 times of diameter dimension.
Further, the material of the pedestal and attachment base is metal material.
The advantages of the present invention over the prior art are that:
(1) elastic element in device provided by the invention is to be parallel to pedestal directional stiffness lower, when two structures
Part occurs high-frequency vibration and generates thermal deformation, and when the two thermal deformation is inconsistent, or when by dynamics load in the direction
When, cyclic deformation occurs for elastic element, and damping element is driven to deform, and consumes vibrational energy, damping ratio with higher can
Structure is effectively reduced answers mechanical response.
(2) the elastic element upper and lower ends in device provided by the invention are connected forms, and perpendicular to pedestal
The rigidity in direction is higher, therefore when high-frequency vibration occurs for structural member, the relative displacement of the structural member of upper and lower ends is by elasticity
Element realizes that the relative displacement on vertical direction is smaller, reduces flexible structural member in the elasticity for being parallel to pedestal direction
Relative displacement, and then reduce the structural stress that structural member generates.And after relative displacement, elastic element can restore to
Original shape, to guarantee that structural member accurately returns to zero-bit.
(3) each device in the present invention is made of all-metal material, therefore has good space environment adaptability,
Under long-term in-orbit service condition, mechanical property is relatively stable.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of high-damping thermal deformation release device provided by the invention；
Fig. 2 is the exploded view of high-damping thermal deformation release device provided by the invention；
Fig. 3 is the composition schematic diagram of another high-damping thermal deformation release device provided by the invention；
Fig. 4 is the exploded view of another high-damping thermal deformation release device provided by the invention.
Specific embodiment
Device provided by the invention is described in detail below with reference to Fig. 1-Fig. 4, high-damping thermal change of the present invention
Shape release device, including pedestal 1, elastic element 2, shell 3, damping element 4, attachment base 5.Wherein, pedestal 1 and attachment base 5 are
The plate of metal material.The lower end of the elastic element 2 and the pedestal 1 are connected, and the elastic element 2 hangs down with the pedestal 1
Directly, the upper end of the elastic element 2 and the attachment base 5 are connected, and the elastic element 2 is in the rigidity perpendicular to 1 direction of pedestal
Greater than the elastic element 2 in the rigidity for being parallel to 1 direction of pedestal, the shell 3 is connected with the pedestal 1, by elastic member
Part 2 is enclosed in the inside of the shell 3；The damping element 4 is filled between the elastic element 2 and the shell 3, institute
It states there are gap on the contact surface of damping element 4 and the elastic element 2, the gap is used to adjust damping element 4 and elasticity
The contact area of element 2, the damped coefficient of the gap volume ratio shared by the damping element 4 and the damping element 4
It is inversely proportional with the rigidity of elastic element 2.
Wherein, if gap volume ratio shared by the damping element 4 is increased by 0% as 15%, at this point, elastic element
2 rigidity becomes the 45% of original rigidity, and the damped coefficient of damping device 4 becomes the 40% of original damped coefficient.Elastic element 2
The elastic element 2 can be greater than or equal in the rigidity 10 for being parallel to 4 direction of pedestal in the rigidity perpendicular to 1 direction of pedestal
Times；Damping element 4 is supported by fine wire, and fine wire is worked out networking, is then filled with mold die forming.
Further, elastic element 2 can be made of more than two foils, be parallel to each other between the sheet metal,
At this point, schematic device can be as depicted in figs. 1 and 2, wherein the sheet metal is greater than in the size perpendicular to 1 direction of pedestal
Or 5 times of size of 1 direction of pedestal are being parallel to equal to sheet metal.
Further, each elastic element 2 can also be made of elastic rod 2-1 and rod piece seat 2-2, at this point, the company
Joint chair 5 includes card cap 5-1 and end cap 5-2, and schematic device can be as shown in Figure 3 and Figure 4: elastic rod 2-1 is specifically as follows 4
Isometric cylindrical NiTi alloy bar, the cylinder alloy bar are greater than or equal to diameter in the size perpendicular to 1 direction of pedestal
5 times of size, each cylinder respectively cuts with one group of fluting by the position of two close end, and cylinder is locally cut to flake, the thin slice at both ends
Thickness direction is parallel.4 holes are provided on pedestal 1, elastic rod 2-1 is inlaid into this 4 holes.It is also provided on rod piece seat 2-2 4 small
Hole, the other end of elastic rod 2-1 are inlaid into 4 apertures of rod piece seat 2-2.There are 4 through-holes on damping element 4, it can will be elastic
Bar 2-1 is passed through.Card cap 5-1 and end cap 5-2 is connected, and card cap 5-1 compresses damping element 4, and end cap 5-2 is connect with rod piece seat 2-2,
And stretch out shell exterior.
The working principle of device provided by the invention is described in detail below: when using the present apparatus, by pedestal 1 with
Structural member A connection, the structural member B for being connected to structural member A is fixed on the end cap 5-2 of attachment base 5 or attachment base 5.Then when
Two structural members occur along the thermal deformation for being parallel to 1 direction of pedestal, and when the two thermal deformation is inconsistent, bullet occurs for elastic element 2
Property deformation, since elastic element 2 is lower in the rigidity for being parallel to 1 direction of pedestal, the active force for deforming formation is also smaller, can avoid
Two structural members are made to generate higher stress.After thermal force disappears, elastic element 2 restores to original shape.Due to elastic member
Part 2 is much larger than perpendicular to 1 directional stiffness of pedestal in the rigidity for being parallel to 1 direction of pedestal, therefore rigidity with higher and power
Stability is learned, can effectively transmit the mechanical loading between two structural members, and keep its relative position.When by along being parallel to bottom
When the dynamics load in 1 direction of seat, cyclic deformation occurs for elastic element 2, and damping element 4 is driven to deform, and consumes vibrational energy
Amount, damping ratio with higher can effectively reduce the mechanical response of structure.
Claims (8)
1. a kind of high-damping thermal deformation release device, which is characterized in that described device includes: pedestal (1), elastic element (2), outer
Shell (3), damping element (4), attachment base (5)；
The lower end and the pedestal (1) of elastic element (2) are connected, and the elastic element (2) is vertical with the pedestal (1), described
The upper end and the attachment base (5) of elastic element (2) are connected, and the elastic element (2) is in the rigidity perpendicular to pedestal (1) direction
Greater than the elastic element (2) in the rigidity for being parallel to pedestal (1) direction；
Shell (3) is connected with the pedestal (1), for elastic element (2) to be enclosed in the inside of the shell (3)；
Damping element (4) is filled between the elastic element (2) and the shell (3), the damping element (4) with it is described
There are gap on the contact surface of elastic element (2), the gap is used to adjust the contact of damping element (4) with elastic element (2)
Area, damped coefficient and the elasticity member of gap volume ratio shared by the damping element (4) and the damping element (4)
The rigidity of part (2) is inversely proportional.
2. high-damping thermal deformation release device according to claim 1, which is characterized in that the elastic element (2) is extremely
Lack two sheet metals, is parallel to each other between the sheet metal.
3. high-damping thermal deformation release device according to claim 2, it is characterised in that the sheet metal is the bottom of perpendicular to
The size in seat (1) direction is greater than or equal to sheet metal and is being parallel to 5 times of size of pedestal (1) direction.
4. high-damping thermal deformation release device according to claim 3, which is characterized in that the material of the damping element (4)
Material is wire, and the shape of the damping element (4) is reticular structure.
5. high-damping thermal deformation release device according to claim 1, which is characterized in that the elastic element (2) includes
Elastic rod (2-1) and rod piece seat (2-2)；
One end of the elastic rod (2-1) is inlaid into the through-hole of the pedestal (1), and the other end is inlaid into the rod piece seat (2-
2) in through-hole.
6. high-damping thermal deformation release device according to claim 5, which is characterized in that the attachment base (5) includes card
Cap (5-1) and end cap (5-2)；
The card cap (5-1) and the end cap (5-2) are connected；
The end cap (5-2) connect with the rod piece seat (2-2).
7. high-damping thermal deformation release device according to claim 5, which is characterized in that the elastic rod (2-1) is circle
Cylindricality alloy bar, the cylinder alloy bar are greater than or equal to 5 times of diameter dimension in the size perpendicular to pedestal (1) direction.
8. high-damping thermal deformation release device according to claim 1, which is characterized in that the pedestal (1) and attachment base
(5) material is metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710571625.7A CN107524744B (en) | 2017-07-13 | 2017-07-13 | A kind of high-damping thermal deformation release device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710571625.7A CN107524744B (en) | 2017-07-13 | 2017-07-13 | A kind of high-damping thermal deformation release device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107524744A CN107524744A (en) | 2017-12-29 |
| CN107524744B true CN107524744B (en) | 2019-08-09 |
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| CN201710571625.7A Active CN107524744B (en) | 2017-07-13 | 2017-07-13 | A kind of high-damping thermal deformation release device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2878817B1 (en) * | 2004-12-08 | 2007-03-23 | Salomon Sa | FLOAT FLOAT ON WATER WITH HYBRID SPACERS |
| CN200971942Y (en) * | 2006-09-27 | 2007-11-07 | 高昱 | Combined and modular vibration-damper |
| CN101725482B (en) * | 2009-12-30 | 2012-06-20 | 洛阳双瑞橡塑科技有限公司 | Damping composite type variable rigidity vibration attenuating support for gearbox of wind powered generator |
| CN202627441U (en) * | 2012-07-11 | 2012-12-26 | 中国人民解放军总参谋部工程兵科研三所 | Rapid assembling type shock-insulating floor |
| CN104373494B (en) * | 2014-10-11 | 2016-05-25 | 清华大学 | A kind of multiple degrees of freedom metal-rubber damper |
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