CN208765929U - Wind tunnel model damper and wind tunnel model component - Google Patents
Wind tunnel model damper and wind tunnel model component Download PDFInfo
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- CN208765929U CN208765929U CN201821730440.2U CN201821730440U CN208765929U CN 208765929 U CN208765929 U CN 208765929U CN 201821730440 U CN201821730440 U CN 201821730440U CN 208765929 U CN208765929 U CN 208765929U
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- 238000013016 damping Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 14
- 230000001629 suppression Effects 0.000 abstract description 2
- 206010008190 Cerebrovascular accident Diseases 0.000 description 4
- 208000006011 Stroke Diseases 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model relates to vibration suppression fields, in particular to a kind of wind tunnel model damper and wind tunnel model component.The damper includes shell, mass block, at least two connecting rods and adjusts component.Wherein, the first side of shell offers hole.Each connecting rod all has first end and opposite second end.Each first end is fixedly connected in the first side of shell；Each second end is cantilever end；Each cantilever end is fixedly connected in mass block.It adjusts component to be movably connected at hole, and the first end of each connecting rod both passes through adjusting component.The damper adjusts the position of component by changing, and changes the fundamental frequency of entire damper.The damper is put at wind tunnel model head cavity, when generating vibration during wind tunnel model is in wind tunnel test, drives the wind tunnel model damper to vibrate together, the resulting damping force of damper can effectively inhibit the vibration of wind tunnel model.
Description
Technical field
The utility model relates to vibration suppression fields, in particular to a kind of wind tunnel model damper and wind-tunnel mould
Type component.
Background technique
Wind tunnel model test is important component part during Flight Vehicle Design, and reasonable wind tunnel model test will be shown
Landing reduces the risk and cost of aircraft exploitation design.Strut support is widely used in domestic wind tunnel model test at present
Model mounting means, system are typical cantilever design.In the test of wind-tunnel dummy vehicle, to avoid support system to gas
The interference of dynamic characteristic, strut lengths are generally 3-5 times of model length, cause that system stiffness is low, first natural frequency is in 10Hz
To between 15Hz, this is close with the ripple frequency of tunnel airstream, is easy to produce coupling, shakes so as to cause the amplitude low frequency of model
It is dynamic.This low-frequency resonance phenomenon not only severely impacts the precision of force test in wind tunnel data, and time of vibration is too long or amplitude
It is excessive, also result in the fatigue rupture of model.
The gas for reducing wind-tunnel is the measure to effect a permanent cure, but the big consuming of its difficulty is high；And change the structure of model system
It will affect the quality and confidence level of test data again, therefore new technological approaches need to be sought to reduce the vibration of model system, with
Guarantee going on smoothly for force test in wind tunnel.
Utility model content
The purpose of this utility model is to provide a kind of wind tunnel model dampers, solve existing wind tunnel model test apoplexy
Movable model is easy to produce the problem of amplitude low-frequency vibration.
The another object of the utility model is to provide a kind of wind tunnel model damper assembly, the wind tunnel model damper group
Part can be effectively reduced wind tunnel model test apoplexy movable model and generate amplitude low-frequency vibration.
To achieve the goals above, the utility model embodiment the technical solution adopted is as follows:
A kind of wind tunnel model damper, comprising: shell；Shell has the first side and opposite second side；First side opens up
There is hole；Mass block, mass block are arranged in shell, and close to second side；At least two connecting rods；Each connecting rod all has
First end and opposite second end；Each first end is fixedly connected in the first side of shell；Each second end is outstanding
Arm end；Each cantilever end is fixedly connected in mass block；And adjust component；It adjusts component to be movably connected at hole, and every
The first end of one connecting rod both passes through adjusting component, and adjusting component can slide along connecting rod, to adjust each connecting rod
Cantilever end length.
In the utility model preferred embodiment, adjusting component includes adjusting screw rod and frequency modulation sliding block；Adjusting screw rod is set
It sets in hole；Frequency modulation sliding block is arranged on adjusting screw rod.
In the utility model preferred embodiment, at least two mounting holes are provided on frequency modulation sliding block；Connecting rod passes through
Mounting hole is fixed on the first side of shell.
In the utility model preferred embodiment, internal screw thread is provided in hole, adjusting screw rod is threadedly connected to hole.
In the utility model preferred embodiment, frequency modulation sliding block is threadedly connected to adjusting screw rod.
In the utility model preferred embodiment, frequency modulation sliding block is tightly attached to the inner wall of the shell, so that shell is interior
Cavity is separated into two spaces.
In the utility model preferred embodiment, damping fluid is provided in shell.
In the utility model preferred embodiment, at least one fluid passage is provided on frequency modulation sliding block；Each liquid
The perforation direction in body channel is consistent with the perforation direction of mounting hole.
In the utility model preferred embodiment, connecting rod is round bar made of stainless steel.
A kind of wind tunnel model component, the wind tunnel model component include such as above-mentioned wind tunnel model damper；And model sheet
Body, wind tunnel model damper are placed at the head cavity of model ontology.
The beneficial effects of the utility model are:
A kind of wind tunnel model damper provided by the utility model, comprising: shell, mass block, at least two connecting rods with
And adjust component.Wherein, shell has the first side and opposite second side；First side offers hole；Mass block is arranged in shell
It is interior, and close to second side；At least two connecting rods；Each connecting rod all has first end and opposite second end；Each
First end is fixedly connected in the first side of shell；Each second end is cantilever end；Each cantilever end is fixedly connected with
In mass block；It adjusts component to be movably connected at hole, and the first end of each connecting rod both passes through adjusting component, adjusts component
It can be slided along connecting rod, to adjust the length of the cantilever end of each connecting rod.The wind tunnel model damper is adjusted by changing
The position for saving component, changes the fundamental frequency of entire wind tunnel model damper.The wind tunnel model damper is put into wind tunnel model head
At portion's cavity, when generating vibration during wind tunnel model is in wind tunnel test, the wind tunnel model damper is driven to vibrate together, hindered
The resulting damping force of Buddhist nun's device, can effectively inhibit the vibration of wind tunnel model, solve existing wind tunnel model test apoplexy
Movable model is easy to produce the problem of amplitude low-frequency vibration.
A kind of wind tunnel model component provided by the utility model, the wind tunnel model component include that above-mentioned wind tunnel model such as hinders
Buddhist nun's device；And model ontology, wind tunnel model damper are placed at the head cavity of model ontology.The wind tunnel model damper energy
It is enough adjusted to optimal frequency and optimum damping coefficient, and individual control system is not needed without influence on model appearance, is inhibited
Significant effect.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram at the first visual angle of the wind tunnel model damper that the utility model first embodiment provides；
Fig. 2 is the structural schematic diagram at the second visual angle of the wind tunnel model damper that the utility model first embodiment provides；
Fig. 3 is the structural schematic diagram of the frequency modulation sliding block for the wind tunnel model damper that the utility model first embodiment provides.
Icon: 100- wind tunnel model damper；110- shell；The first side 111-；112- second side；The hole 113-；120- matter
Gauge block；130- connecting rod；131- first end；132- second end；140- adjusts component；141- adjusting screw rod；142- frequency modulation sliding block；
143- fluid passage；144- mounting hole；151- fastener.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the utility model embodiment, it should be noted that the orientation or position of the instructions such as term " on ", "inner"
Set relationship be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation usually put
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
It is logical.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
First embodiment
Fig. 1-Fig. 3 is please referred to, the present embodiment provides a kind of wind tunnel model dampers 100 comprising shell 110, mass block
120, at least two connecting rods 130 and adjusting component 140.
Further, shell 110 has the first side 111 and opposite second side 112.
Shell 110 has inner chamber body.Inner chamber body is provided with damping fluid.
Specifically, the liquid for a certain type that above-mentioned damping fluid can select this field common according to practical situation.
Optionally, methyl-silicone oil.
It, can be effectively by the way that damping fluid is arranged in the inner chamber body of the shell 110 of above-mentioned wind tunnel model damper 100
Play the role of slowing down vibration.
Further, hole 113 is offered on the wall body of the first side 111 of shell 110, which is connected to shell 110
Inner chamber body in.
By the way that the hole 113 is arranged, not only damping fluid can be perfused into the inner chamber body of shell 110 by the hole 113.And
It can be movably connected in the inner chamber body of shell 110 by the hole 113 by component 140 is adjusted.
Further, in the present embodiment, the shape of above-mentioned shell 110, which can choose, is set as cylindrical.
It should be noted that in other optional embodiments of the utility model, the specific shape of above-mentioned shell 110
Also it can choose and be set as other shapes applicatory.
Further, component 140 is adjusted to be movably connected at hole 113.
Specifically, adjusting component 140 includes adjusting screw rod 141 and frequency modulation sliding block 142.Adjusting screw rod 141 is arranged in hole 113
It is interior.Frequency modulation sliding block 142 is arranged on adjusting screw rod 141.
It should be noted that above-mentioned hole 113 is provided with the first side 111 of shell 110 and the bottom wall close to shell 110
Place.To when adjust component 140 be movably connected at hole 113 after, adjusting component 140 also be located at shell 110 the first side 111 and
At the bottom wall of shell 110.
Further, internal screw thread is provided in hole 113, adjusting screw rod 141 is threadedly connected to hole 113.
Specifically, there is external screw thread, external screw thread can be be arranged in hole 113 internal screw thread mutual on adjusting screw rod 141
Match, to realize threaded connection.
Further, in the present embodiment, reach of the above-mentioned adjusting screw rod 141 at adjacent pores 113 is slightly larger than hole
113 hole lengths.
Further, threaded hole is provided on frequency modulation sliding block 142, adjusting screw rod 141 passes through threaded hole, so that frequency modulation sliding block
142 are threadingly assembled together with adjusting screw rod 141.
Further, it should be noted that the threaded hole being arranged on screw thread and frequency modulation sliding block 142 on adjusting screw rod 141
Length matching.
Further, in the present embodiment, the shape of above-mentioned frequency modulation sliding block 142, which can choose, is set as cylindrical body.
It should be noted that in other optional embodiments of the utility model, above-mentioned frequency modulation sliding block 142 it is specific
Shape also can choose other shapes applicatory of this field.
Further, frequency modulation sliding block 142 is tightly attached to the inner wall of shell 110, so that the inner chamber body of shell 110 is separated into two
A space.
Specifically, in the present embodiment, the shape of above-mentioned frequency modulation sliding block 142 also selects to be set as cylindrical, so as to
It is enough preferably to cooperate with the inner chamber body of shell 110.
Further, by the way that above-mentioned frequency modulation sliding block 142 to be tightly attached to the inner wall of shell 110, thus when connecting rod 130 is pacified
After on frequency modulation sliding block 142, close to the connecting rod 130 at 110 first side of shell, 111 end and 111 wall body of the first side of shell 110
Between can not vibrate, become fixing end.
Further, at least one fluid passage 143 is provided on frequency modulation sliding block 142.
By the way that above-mentioned fluid passage 143 is arranged, so that the damping fluid being arranged in 110 inner chamber body of shell can be from
Pass through in frequency modulation sliding block 142.
Further, wind tunnel model damper 100 provided in this embodiment includes two connecting rods 130.
It should be noted that above-mentioned wind tunnel model damper 100 can in other optional embodiments of the utility model
It is set as including multi-connection bar 130 with selection.
Further, in the present embodiment, each connecting rod 130 all has first end 131 and opposite second end
132；Each first end 131 is fixedly connected in the first side 111 of shell 110；Each second end 132 is cantilever end；
Each cantilever end is fixedly connected in mass block 120.
By the way that mass block 120 is arranged, when wind tunnel model generates vibration, which can generate damping, thus right
The vibration that wind tunnel model generates generates damping.
Further, in the present embodiment, mounting hole 144 there are two being opened up on frequency modulation sliding block 142.
Two connecting rods 130 are passed through from a mounting hole 144 respectively, to be connected on frequency modulation sliding block 142.
Further, one end of each connecting rod 130 is fixed on the first side 111 of shell 110, and the other end is from above-mentioned tune
It is pierced by mounting hole 144 on frequency sliding block 142, and extends to second side 112 of shell 110, become cantilever end.
Further, mass block 120 above-mentioned is set in cantilever end.
Further, it is respectively provided with fastener 151 at the opposite both ends of mass block 120, to be effectively prevented from mass block
120 shake in two connecting rods 130.
Further, in the present embodiment, above-mentioned fastener 151 selects bolt.
In other optional embodiments of the utility model, above-mentioned fastener 151 also can choose this field, and other can
Applicable fastener 151.
By the way that the above-mentioned setting of mass block 120 in cantilever end, is adjusted frequency modulation sliding block 142 in adjusting spiral shell so as to pass through
Position on bar 141, and then the length of the cantilever end of each connecting rod 130 is adjusted, the frequency of entire wind tunnel model damper 100
Rate also changes correspondingly.
Further, in the present embodiment, connecting rod 130 is selected as round bar made of stainless steel.
The wind tunnel model damper 100 changes the fundamental frequency of damper by the position of change frequency modulation sliding block 142, and selection is closed
Suitable liquid pours into, and reaches frequency and damping is dual optimal.In use, the wind tunnel model damper 100 is put into wind tunnel model
At head cavity, when generating vibration during wind tunnel model is in wind tunnel test, 100 1 starting of oscillation of wind tunnel model damper is driven
It is dynamic, the resulting damping force of damper, to inhibit the vibration of wind tunnel model.The wind tunnel model damper 100 can be adjusted
To optimal frequency and optimum damping coefficient, therefore the vibration that can preferably inhibit wind tunnel model to generate, and to model appearance
Without influence, individual control system is not needed, inhibitory effect is significant.
Second embodiment
The present embodiment provides a kind of wind tunnel model component, which includes the wind-tunnel mould that first embodiment provides
Type damper and model ontology.
Further, wind tunnel model damper is placed at the head cavity of model ontology.The wind tunnel model damper group
Part can be effectively reduced wind tunnel model test apoplexy movable model and generate amplitude low-frequency vibration.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.It should be noted that
To: similar label and letter indicate similar terms in following attached drawing, therefore, once determined in a certain Xiang Yi attached drawing
Justice does not need then that it is further defined and explained in subsequent attached drawing.
Claims (10)
1. a kind of wind tunnel model damper characterized by comprising
Shell；The shell has the first side and opposite second side；First side offers hole；
Mass block, the mass block are arranged in the shell, and close to described second side；
At least two connecting rods；Each described connecting rod all has first end and opposite second end；Each described first
End is fixedly connected in first side of the shell；Each described second end is cantilever end；Each described cantilever
End is fixedly connected in the mass block；And
Adjust component；The adjusting component is movably connected at the hole, and the first end of each connecting rod is equal
Across the adjusting component, the adjusting component can be slided along the connecting rod, to adjust the institute of each connecting rod
State the length of cantilever end.
2. wind tunnel model damper as described in claim 1, which is characterized in that
The adjusting component includes adjusting screw rod and frequency modulation sliding block；
The adjusting screw rod is arranged in the hole；
The frequency modulation sliding block is arranged on the adjusting screw rod.
3. wind tunnel model damper as claimed in claim 2, which is characterized in that
At least two mounting holes are provided on the frequency modulation sliding block；
The connecting rod passes through the mounting hole, is fixed on first side of the shell.
4. wind tunnel model damper as claimed in claim 2, which is characterized in that
Internal screw thread is provided in the hole, the adjusting screw rod is threadedly connected to the hole.
5. wind tunnel model damper as claimed in claim 2, which is characterized in that
The frequency modulation sliding block is threadedly connected to the adjusting screw rod.
6. wind tunnel model damper as claimed in claim 3, which is characterized in that
The frequency modulation sliding block is tightly attached to the inner wall of the shell, so that the inner chamber body of the shell is separated into two spaces.
7. wind tunnel model damper as claimed in claim 6, which is characterized in that
Damping fluid is provided in the shell.
8. wind tunnel model damper as claimed in claim 7, which is characterized in that
At least one fluid passage is provided on the frequency modulation sliding block；
The perforation direction of each fluid passage is consistent with the perforation direction of the mounting hole.
9. wind tunnel model damper as described in claim 1, which is characterized in that
The connecting rod is round bar made of stainless steel.
10. a kind of wind tunnel model component, which is characterized in that the wind tunnel model component includes such as any one of claim 1-9 institute
The wind tunnel model damper stated；And
Model ontology, the wind tunnel model damper are placed at the head cavity of the model ontology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821730440.2U CN208765929U (en) | 2018-10-24 | 2018-10-24 | Wind tunnel model damper and wind tunnel model component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821730440.2U CN208765929U (en) | 2018-10-24 | 2018-10-24 | Wind tunnel model damper and wind tunnel model component |
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| Publication Number | Publication Date |
|---|---|
| CN208765929U true CN208765929U (en) | 2019-04-19 |
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ID=66137497
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| CN201821730440.2U Active CN208765929U (en) | 2018-10-24 | 2018-10-24 | Wind tunnel model damper and wind tunnel model component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115450A (en) * | 2018-10-24 | 2019-01-01 | 浙江大学 | Wind tunnel model damper and wind tunnel model component |
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2018
- 2018-10-24 CN CN201821730440.2U patent/CN208765929U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115450A (en) * | 2018-10-24 | 2019-01-01 | 浙江大学 | Wind tunnel model damper and wind tunnel model component |
| CN109115450B (en) * | 2018-10-24 | 2024-03-29 | 浙江大学 | Wind tunnel model damper and wind tunnel model assembly |
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