CN207145384U - A kind of Flow Field in Wind Tunnel start and stop damping device - Google Patents
A kind of Flow Field in Wind Tunnel start and stop damping device Download PDFInfo
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- CN207145384U CN207145384U CN201721092649.6U CN201721092649U CN207145384U CN 207145384 U CN207145384 U CN 207145384U CN 201721092649 U CN201721092649 U CN 201721092649U CN 207145384 U CN207145384 U CN 207145384U
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- connecting rod
- damping device
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- translatory plate
- screw
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- 238000002474 experimental method Methods 0.000 description 8
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model provides a kind of Flow Field in Wind Tunnel start and stop damping device, the device includes translatory plate, connecting rod, ball-screw, servomotor, casing, wallboard and sliding block connector, the casing is arranged on above wallboard, the servomotor is fixed on casing one end, and servomotor carries out axis connection by the ball-screw of shaft coupling and the casing other end；The connecting rod uses brace and connecting rod framework, and the nut on one end and ball-screw of crank connecting link is connected through the hinge, and the other end is connected through the hinge with translatory plate；The translatory plate is set with wallboard keeping parallelism.Damping device provided by the utility model possesses the characteristics of compact-sized, dynamic property is good, it can install and use in the wind-tunnel of restricted clearance, flow field can be suppressed very well to start and close down moment impact load to caused by model, balance, improve the accuracy of Test Data Collecting.
Description
Technical field
It the utility model is related to a kind of wind tunnel experiment device, and in particular to a kind of Flow Field in Wind Tunnel start and stop damping device, use
In start during wind tunnel experiment in flow field and when closing down to caused by model or balance impact load suppression and damping.
Background technology
Wind tunnel experiment refers to disposes aircraft or other object models in wind-tunnel, learning gas flowing and its phase with model
Interaction, to understand a kind of aerodynamic experiment method of the air dynamic behaviour of practical flight device or other objects.It is
According to motion composition principle, the model or material object of aircraft or other objects are fixed in ground artificial environment, artificially
Manufacture air-flow flows through, and aerial various complicated state of flights is simulated with this, so as to obtain test data.
With the aerodynamic high speed development in China, wind tunnel test is not only in the research and development of aerospace engineering
In play an important role, and the fields such as communications and transportation, building construction, wind energy utilization be even more play indispensable work
With.To make result of the test accurate, flowing during experiment must be similar to actual flow regime, that is, must be fulfilled for the law of similitude will
Ask.
At present, during wind tunnel test, wind-tunnel in startup and stopping, air velocity distribution from without reach stable state or
During from stable state to disappearance, air-flow can produce an impact load to model, day equality so that model and balance hair
Raw strenuous vibration.This vibrations not only influence the accuracy of experimental test result, and generation that can be to model and balance destroys,
Result even in model and balance fractures, threaten the security of wind tunnel experiment.
Due to thering is substantial amounts of control device and measuring apparatus to be placed on test chamber in room during wind tunnel experiment, account for
With substantial amounts of space.So needing to develop a kind of damping device of compact type, to be placed on test chamber limited in room
In space, realize in wind-tunnel start and stop moment, suppress air-flow and impacted to caused by model.
Utility model content
The purpose of this utility model is exactly in order to solve the above-mentioned technical problem, and to provide a kind of Flow Field in Wind Tunnel start and stop damping dress
Put.The damping device possesses the characteristics of compact-sized, dynamic property is good, can install and use, energy in the wind-tunnel of restricted clearance
It is enough to suppress flow field very well and start and close down moment impact etc. and to adversely affect to caused by model, balance, so as to improve test data
The accuracy of collection.The damping device uses when starting and close down particularly suitable for the flow field of supersonic wind tunnel.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of Flow Field in Wind Tunnel start and stop damping device, the damping device, which includes translatory plate, connecting rod, ball-screw, straight line, leads
Rail, servomotor, casing, wallboard and sliding block connector, the casing are arranged on above wallboard, and casing has side panel and above
Plate, the servomotor are fixed on side panel one end of casing, and servomotor passes through shaft coupling and the ball of the side panel other end
Leading screw carries out axis connection；The line slideway is fixed on plate bottom above casing, and line slideway is located above ball-screw, directly
Sliding block is installed on line guide rail, sliding block connector is fixedly mounted on the sliding block, the sliding block connector passes through with ball-screw
Nut is fixedly connected；The connecting rod uses brace and connecting rod framework, and one end and the sliding block connector of crank connecting link are connected through the hinge,
The other end is connected through the hinge with translatory plate；The translatory plate remains with wallboard to be arranged in parallel.
Above-mentioned damping device provided by the utility model, can perform well in damping during Flow Field in Wind Tunnel start and stop, subtract significantly
From without during to stable state or from stable state to disappearance, air-flow rushes few air velocity distribution to caused by model or balance
Hit.When the device is positioned in wind-tunnel, starts in flow field before establishing, place this in the top and the bottom of balance or model and subtract
Device is shaken, first translatory plate can be adjusted to relevant work position manually（The spacing of main regulation translatory plate and model or balance）,
Make two pieces of translatory plates of top and the bottom between balance or model, then drive ball-screw to do revolution fortune by servomotor
It is dynamic, and turned round by the nut drivening rod on ball-screw, circular motion is done so as to the translatory plate of drivening rod end,
Realize the receipts plate of translatory plate and put plate motion, realized and weakened when flow field starts and closed down to model or day by the limitation of translatory plate
Impact, inhibits flow field well caused by flat（Particularly supersonic flow field）Start and close down moment it is unstable when to model or
Impact load caused by balance, generate good damping effect.
Damping device of the present utility model sets line slideway, and sliding block and sliding block connector are installed on line slideway,
It is connected by sliding block connector with the nut on ball screw, realizes that the nut on ball-screw can be done directly along line slideway
Line moves, and ensure that the accuracy and accuracy of control translatory plate movement position well.Damping device of the present utility model is not
Only possess the characteristics of dynamic property is good, and compact overall structure, be fully able to be used in limited wind-tunnel, solve
Flow Field in Wind Tunnel impacts influence to caused by model or balance.
Ball screw of the present utility model is driven by servomotor, and servomotor can be connected with the control system of outside
System or connection, the running speed of servomotor is set by control system, so as to drive ball screw to be moved along a straight line, realized
The accurate receipts plate of translatory plate operates with plate is put.
Further, the connecting rod includes first connecting rod, second connecting rod and third connecting rod, and the first connecting rod and second connect
Bar upper end is connected through the hinge with casing, and lower end is connected through the hinge with translatory plate；Described third connecting rod one end and second
It is connected through the hinge in the middle part of the crank of connecting rod, the third connecting rod other end is connected through the hinge with sliding block connector.Using three suites
The structure design of handle connecting rod, it can more conveniently and accurately control movement locus and the position of translatory plate.
Further, the damping device also includes mechanical position limitation mechanism, and the mechanical position limitation mechanism is located at ball-screw
Underface, and being be arranged in parallel with ball-screw, installs block in mechanical position limitation mechanism, block can along the activity of mechanical position limitation mechanism,
The block is connected using the optical axis in mechanical position limitation mechanism as guide rail with leading screw in mechanical position limitation mechanism, adjustable so as to realize
Mechanical stop limiter.Mechanical position limitation mechanism can carry out spacing to nut well so that do revolution fortune in control ball-screw
Possesses more precise control effect when dynamic.
Further, the translatory plate is located at below wallboard, and the first connecting rod and second connecting rod run through wallboard, and and wall
Translatory plate connection below plate.Translatory plate is located at below wallboard, the convenient motion for controlling translatory plate, and provides enough translatory plates
Space.
Further, the wallboard bottom is provided for depositing the translatory plate accommodating groove of translatory plate.Can be by translatory plate folding and unfolding
Into translatory plate accommodating groove, and it can farthest reduce the influence of damping device stream field during flow field is established.
Further, the second connecting rod, third connecting rod, ball-screw and servomotor composition slider-crank mechanism, lead to
Cross servomotor driving ball-screw and do gyration, and second connecting rod and third connecting rod are driven by the nut on ball-screw
Do gyration.
Further, the translatory plate, first connecting rod, second connecting rod and casing composition parallel four-bar linkage, pass through tool
There are the first connecting rod of crank structure and second connecting rod to do gyration so as to drive translatory plate to do circular motion, translatory plate does circular arc
During motion all the time with wallboard keeping parallelism.
Further, the translatory plate, first connecting rod and second connecting rod are designed to surrounding chamfering structure.Fallen using surrounding
It the structure design at angle, can effectively reduce resistance in flow field, and play certain guide functions.
The beneficial effects of the utility model are：
（1）Damping device of the present utility model drives ball-screw to be driven using servomotor, it is ensured that translatory plate
It is fast and accurate to be moved to position needed for test section；
（2）The crank connecting link that the utility model uses constitutes slider-crank mechanism and parallel―ordinal shift machine with other devices
Structure, in the confined space translatory plate can be made to complete circular motion very well, possess the advantages of dynamic property is good, and overall structure is tight
Gather, device high capacity；
（3）The utility model makes translatory plate do receipts plate on circular arc direction and puts plate motion, and staggered translatory plate well
With the position of translatory plate accommodating groove, influence of the notch position to flow field at model is reduced.
Brief description of the drawings
Fig. 1 is damping device translatory plate deployed configuration schematic diagram of the present utility model；
Fig. 2 is damping device translatory plate contraction structure schematic diagram of the present utility model；
Fig. 3 is damping device structural representation of the present utility model.
Embodiment
In order that the technical solution of the utility model and main points are clearer, with reference to embodiments and accompanying drawing is to this practicality
New to be described further, following embodiments and accompanying drawing are used only for explaining the utility model, are not used to limit this practicality newly
The protection domain of type.
Embodiment
As Figure 1-3, it is a kind of Flow Field in Wind Tunnel start and stop damping device provided by the utility model, the damping device bag
Include translatory plate 1, connecting rod 2（It is made up of first connecting rod 2-1, second connecting rod 2-2 and third connecting rod 2-3）, ball-screw 3, machinery
Position-limit mechanism 4, line slideway 5, servomotor 6, casing 7, wallboard 8 and sliding block connector 9, its middle case 7 are arranged on wallboard 8
Side, casing 7 have side panel and top panel, and servomotor 6 is fixed on side panel one end of casing 7, and servomotor 6 passes through shaft coupling
The ball-screw 3 of device and the side panel other end carries out axis connection；Line slideway 5 is fixed on plate bottom, straight line above casing 7 and led
Rail 5 is located at the top of ball-screw 3, and sliding block 5-1 is provided with line slideway 5, and sliding block connector 9 is fixedly mounted on sliding block 5-1, sliding
Block connector 9 is fixedly connected with ball-screw 3 by nut 3-1.
Connecting rod 2 is made up of first connecting rod 2-1, second connecting rod 2-2 and third connecting rod 2-3, using brace and connecting rod framework,
One connecting rod 2-1 and second connecting rod 2-2 upper ends are connected through the hinge with casing 7, and lower end is connected through the hinge with translatory plate 1；
With being connected through the hinge in the middle part of second connecting rod 2-2 crank, the third connecting rod 2-3 other ends connect with sliding block for third connecting rod 2-3 one end
Fitting 9 is connected through the hinge.Translatory plate 1 is located at the lower section of wallboard 8, and first connecting rod 2-1 and second connecting rod 2-2 run through wallboard 8, and with
The translatory plate 1 of the lower section of wallboard 8 is connected, and translatory plate 1 is set with the keeping parallelism of wallboard 8, and translatory plate 1, first connecting rod 2-1 and second connect
Bar 2-2 is designed to surrounding chamfering structure, and the bottom of wallboard 8 is provided with the translatory plate accommodating groove 10 for depositing translatory plate 1.
Wherein, second connecting rod 2-2, third connecting rod 2-3, ball-screw 3 and servomotor 6 form slider-crank mechanism, lead to
Crossing servomotor 6 drives ball-screw 3 to do gyration, and drives third connecting rod 2-3 by the nut 3-1 on ball-screw 3
Gyration is done with second connecting rod 2-2.
Wherein, translatory plate 1, first connecting rod 2-1, second connecting rod 2-2 and casing 7 form parallel four-bar linkage, by the
One connecting rod 2-1 and second connecting rod 2-2 does gyration so as to drive translatory plate 1 to do circular motion, when translatory plate 1 does circular motion
All the time with the keeping parallelism of wallboard 8.
Mechanical position limitation mechanism 4 is located at immediately below ball-screw 3, and is be arranged in parallel with ball-screw 3, mechanical position limitation mechanism 4
Upper installation block 4-1, block 4-1 are connected using the optical axis in mechanical position limitation mechanism 4 as guide rail with leading screw in mechanical position limitation mechanism 4,
So as to realize adjustable mechanical stop limiter, block 4-1 can be correspondingly along mechanical position limitation mechanism when nut 3-1 is moved
4 do the movement of equidirectional.
Application examples
Damping device in the utility model embodiment 1 is tested for supersonic wind tunnel, before wind tunnel experiment, in wind-tunnel
Balance or model above and below a set of damping device is respectively adopted, before the startup of wind-tunnel supersonic flow field, first handle manually
Translatory plate 1 is adjusted to relevant work position（Spacing between main regulation translatory plate and model）, make balance or model positioned at it is upper,
Between the translatory plate 1 of lower section, when wind-tunnel startup moment, balance or model can only occur light due to the limitation of upper and lower translatory plate 1
Micro- vibrations；After air velocity distribution reaches stabilization, instruction is sent by the control system of external connection and forces servomotor 6 to drive
Ball-screw 3 does gyration, and drivening rod 2（Including first connecting rod 2-1, second connecting rod 2-2 and third connecting rod 2-3）Send out
Raw gyration, finally drive translatory plate 1 to be done to the direction of wallboard 8 by connecting rod 2 and receive plate action, and translatory plate 1 is received to translation
In plate accommodating groove 10, so as to reduce the influence of damping device stream field, ensure the true of the flow field active force that balance or model are subject to
Reality and stability.Before needing to close down flow field, sending instruction by control system makes the drive link 2 of servomotor 6 by translation
Plate 1 is launched and arrive relevant work position, then turns off flow field, effective damping during so as to realize that flow field is closed down, and reaches suppression and flows
Field impact load to caused by model when closing down.
Found by repeatedly test, tested for Flow Field in Wind Tunnel using damping device of the present utility model, subtracted with not using
Shake device is compared, and model reduces about 40 % in the flowfield impingement load that flow field starts and closed down suffered by moment, and model makes
Extended with the life-span, compared with before unused damping device, the service life of model extends more than 1 times；Wind tunnel test is examined
The model data accuracy rate measured greatly improves, and carries out ten detection the data obtained results and is more or less the same, and is not filled using damping
The data float detected when putting is larger, and the maximum and minimum value difference in ten detections are larger, and error range is more than 2 %.
Claims (8)
1. a kind of Flow Field in Wind Tunnel start and stop damping device, it is characterised in that the damping device includes translatory plate（1）, connecting rod（2）、
Ball-screw（3）, line slideway（5）, servomotor（6）, casing（7）, wallboard（8）With sliding block connector（9）, the casing
（7）Installed in wallboard（8）Top, casing（7）With side panel and top panel, the servomotor（6）It is fixed on casing（7）'s
Side panel one end, servomotor（6）Pass through shaft coupling and the ball-screw of the side panel other end（3）Carry out axis connection；It is described straight
Line guide rail（5）It is fixed on casing（7）Above plate bottom, line slideway（5）Positioned at ball-screw（3）Top, line slideway（5）
On sliding block is installed（5-1）, the sliding block（5-1）Upper fixed installation sliding block connector（9）, the sliding block connector（9）With rolling
Ballscrew（3）Pass through nut（3-1）It is fixedly connected；The connecting rod（2）Using brace and connecting rod framework, one end of crank connecting link and cunning
Block connector（9）It is connected through the hinge, the other end and translatory plate（1）It is connected through the hinge；The translatory plate（1）With wallboard（8）
Remain parallel.
2. Flow Field in Wind Tunnel start and stop damping device according to claim 1, it is characterised in that the connecting rod（2）Including first
Connecting rod（2-1）, second connecting rod（2-2）And third connecting rod（2-3）, the first connecting rod（2-1）And second connecting rod（2-2）Upper end is equal
With casing（7）It is connected through the hinge, lower end is and translatory plate（1）It is connected through the hinge；The third connecting rod（2-3）One end and the
Two connecting rods（2-2）Crank in the middle part of be connected through the hinge, third connecting rod（2-3）The other end and sliding block connector（9）Pass through hinge
Connection.
3. Flow Field in Wind Tunnel start and stop damping device according to claim 1 or 2, it is characterised in that the damping device also wraps
Include mechanical position limitation mechanism（4）, the mechanical position limitation mechanism（4）Positioned at ball-screw（3）Underface, and and ball-screw（3）It is flat
Row is set, mechanical position limitation mechanism（4）The upper mobilizable block of installation（4-1）.
4. Flow Field in Wind Tunnel start and stop damping device according to claim 2, it is characterised in that the translatory plate（1）Positioned at wall
Plate（8）Lower section, the first connecting rod（2-1）And second connecting rod（2-2）Through wallboard（8）, and and wallboard（8）The translatory plate of lower section
（1）Connection.
5. Flow Field in Wind Tunnel start and stop damping device according to claim 4, it is characterised in that the wallboard（8）Bottom is set
Have for depositing translatory plate（1）Translatory plate accommodating groove（10）.
6. Flow Field in Wind Tunnel start and stop damping device according to claim 4, it is characterised in that the second connecting rod（2-2）,
Three connecting rods（2-3）, ball-screw（3）And servomotor（6）Slider-crank mechanism is formed, passes through servomotor（6）Drive ball
Leading screw（3）Gyration is done, and passes through ball-screw（3）On nut（3-1）Drive second connecting rod（2-2）And third connecting rod
（2-3）Do gyration.
7. Flow Field in Wind Tunnel start and stop damping device according to claim 4, it is characterised in that the translatory plate（1）, first connect
Bar（2-1）, second connecting rod（2-2）And casing（7）Parallel four-bar linkage is formed, passes through the first connecting rod with crank structure
（2-1）And second connecting rod（2-2）Gyration is done so as to drive translatory plate（1）Do circular motion, translatory plate（1）Do circular motion
When all the time with wallboard（8）Keeping parallelism.
8. Flow Field in Wind Tunnel start and stop damping device according to claim 4, it is characterised in that the translatory plate（1）, first connect
Bar（2-1）And second connecting rod（2-2）It is designed to surrounding chamfering structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092649.6U CN207145384U (en) | 2017-08-29 | 2017-08-29 | A kind of Flow Field in Wind Tunnel start and stop damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092649.6U CN207145384U (en) | 2017-08-29 | 2017-08-29 | A kind of Flow Field in Wind Tunnel start and stop damping device |
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| Publication Number | Publication Date |
|---|---|
| CN207145384U true CN207145384U (en) | 2018-03-27 |
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ID=61670482
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721092649.6U Withdrawn - After Issue CN207145384U (en) | 2017-08-29 | 2017-08-29 | A kind of Flow Field in Wind Tunnel start and stop damping device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207145384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345536A (en) * | 2017-08-29 | 2017-11-14 | 成都华远科技有限公司 | A kind of Flow Field in Wind Tunnel start and stop damping device |
-
2017
- 2017-08-29 CN CN201721092649.6U patent/CN207145384U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345536A (en) * | 2017-08-29 | 2017-11-14 | 成都华远科技有限公司 | A kind of Flow Field in Wind Tunnel start and stop damping device |
| CN107345536B (en) * | 2017-08-29 | 2024-01-02 | 成都华远科技有限公司 | Wind tunnel flow field start-stop damping device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lv Jiming Inventor after: Li Xiaoli Inventor after: Liu Zhaohong Inventor after: Chen Tangjing Inventor after: Liu Qi Inventor before: Lv Jiming Inventor before: Li Xiaoli Inventor before: Liu Zhaohong Inventor before: Chen Tangjing |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180327 Effective date of abandoning: 20240102 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180327 Effective date of abandoning: 20240102 |