CN108168834A - A kind of switching device of multi-model high frequency base balance experiment - Google Patents
A kind of switching device of multi-model high frequency base balance experiment Download PDFInfo
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- CN108168834A CN108168834A CN201810122998.0A CN201810122998A CN108168834A CN 108168834 A CN108168834 A CN 108168834A CN 201810122998 A CN201810122998 A CN 201810122998A CN 108168834 A CN108168834 A CN 108168834A
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- pinboard
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- 238000002474 experimental method Methods 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 53
- 125000006850 spacer group Chemical group 0.000 claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
A kind of switching device of multi-model high frequency base balance experiment including pinboard, switching board spacer, model cushion block, I types weight, II type weights, opens up the hole of n × m array, the specification all same in hole on pinboard；Board spacer of transferring is mounted on wind-tunnel rotary base, and pinboard is mounted on switching board spacer, is fastened after screw bolt passes pinboard, I type weights with nut；Balance is placed on pinboard, and several model cushion blocks are uniformly placed in the outside of each balance base, and II types weight pushes down model cushion block and balance base, is fastened after screw bolt passes pinboard, II type weights with nut.The present invention can install multiple high frequency base balances simultaneously by the switching device on a wind-tunnel rotary base and test system, so that realizing the test of multiple building models in a wind tunnel test, there is higher efficiency advantage than existing experimental rig.The invention belongs to wind-tunnel technique fields.
Description
Technical field
The invention belongs to the switching dresses that wind-tunnel technique field more particularly to a kind of multi-model high frequency base balance are tested
It puts.
Background technology
High frequency base balance is a kind of common test equipment of skyscraper wind tunnel test.High frequency base balance passes through spiral shell
Bolt, cushion block are connected with the rotary base of wind-tunnel, and test model pedestal is connect by bolt with high frequency base balance.In wind-tunnel reality
When testing, the rotary base of wind-tunnel is rotated according to fixed angle, and the high frequency base balance on top and test model also rotate therewith,
To simulate the operating mode that wind blows to building from different perspectives.But traditional test method only supports the height of single test model
Frequency pedestal balance test namely rotary base, rotary base balance can only install single building model and carry out experiment.Cause
This, when more buildings closer to the distance simultaneously for measure target when, can only reinstall several times target building model and
The interference building on periphery, measures several times, such inefficient operation；The same pacing of multiple test models is needed under partial picture
Amount, it is truer, more accurate to obtain with observation, the multiple test models of testing experiment influencing each other under same test environment
Ground wind tunnel test is as a result, traditional test method obviously cannot reach test objective.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of multi-model high frequency that multiple test models can be measured in primary experiment
The switching device of pedestal balance test, it also has many advantages, such as that efficient, multiple models can synchro measure.
A kind of switching device of multi-model high frequency base balance experiment, including pinboard, switching board spacer, model cushion block, I
Type weight, II type weights open up the hole of n × m array, the specification all same in hole on pinboard；Board spacer of transferring is mounted on wind-tunnel
On rotary base, pinboard is mounted on switching board spacer, is fastened after screw bolt passes pinboard, I type weights with nut；Examination
It tests model to be mounted on pinboard by balance, several model cushion blocks, II type pressures is uniformly placed in the outside of each balance base
Iron pushes down model cushion block and balance base, is fastened after screw bolt passes pinboard, II type weights with nut.Using this knot
Structure can test multiple building test models simultaneously on a wind-tunnel turntable, can be under the conditions of same wind tunnel test to multiple examinations
Model measurement is tested, influencing each other between test model and test model can be taken into account in test, the authenticity of simulation is stronger, surveys
The result of examination is more accurate.
As a preferred embodiment, pinboard is square plate, the one side of pinboard opens up a groove, groove along every a line hole
Depth be more than nuts depth, the diameter of groove and the outer diameter of nuts match.Using this structure, square plate is easy to add
Work is into the hole of array distribution, and the groove on square plate can fix the nuts of the bolt of fixed weigher pedestal so that balance
Pedestal is more stable, so as to which test model installs more stable, test result deviation smaller.
As a preferred embodiment, four vertex in pinboard are rounded down.Using this structure, reduce experimental rig
Sharp place, avoids during experiment to the injury of staff.
As a preferred embodiment, model cushion block is prism, four model cushion blocks are uniformly arranged on the outside of balance base, and
The gap in a hole, the thickness of model cushion block and the thickness phase of balance base are at least kept between model cushion block and balance base
Together.Using this structure, preferably pinboard can be supported, and can be so that nuts is headed into grooved rail, bolt will transfer
The installation of plate more fastens.
As a preferred embodiment, II types weight is rectangular-shape, and the center position of II type weights offers circular hole；II types
Weight one end is pressed on model cushion block, and the other end is pressed on balance base, the hole alignment in the circular hole and gap of II type weights, spiral shell
The shaft of bolt sequentially pass through hole in gap, II type weights circular hole after fastened with nut, and nuts passes through on pinboard
Groove is fixed.Using this structure, nuts is fixed by the groove on pinboard, so as to which II types weight is locked securely,
Therefore test model can be more stably fixed on pinboard by II types weight.
As a preferred embodiment, switching board spacer is prism, eight prisms are divided into four groups, and four groups of prisms are installed respectively
Above the grooved rail outer end of wind-tunnel turntable；There is spacing, spacing is more than the outer of nuts between two switching board spacers
Diameter, spacing are at least aligned a hole on pinboard.It, can be by equally distributed switching board spacer by pinboard using this structure
It supports, and spacing will be reserved between each group of pinboard, at least one hole is reserved on the pinboard of spacing alignment, is convenient for
Pass through bolt, nut fixed transfer plate.
As a preferred embodiment, I types weight is rectangular-shape, and circular hole is opened up in the center of I type weights；Nuts is from switching
Spacing between board spacer is headed into after passing through in grooved rail, shank of bolt wore the hole of pinboard, I type weights circular hole after use
Nut fastens.Using this structure, it is placed in grooved rail by spacing convenient for nuts, therefore pinboard can pass through bolt, spiral shell
Mother is more stably mounted on switching board spacer.
As a preferred embodiment, the center of pinboard offers the cable hole for cabling.Using this structure, convenient for that will try
Electric wire during testing is concentrated through cable hole, reduces electric wire confusion, winding during experiment, improves efficiency.
Balance employed in the present invention is high frequency base balance.
Advantages of the present invention：Pinboard is mounted on by board spacer of transferring on wind-tunnel rotary base by the present invention, and is being turned
The hole of array configuration is opened up on fishplate bar, so as to install multiple experiment moulds on one piece of pinboard by weight, bolt, nut
Type, therefore multiple test models can be tested in primary experiment, it can be under the conditions of same wind tunnel test to multiple test models
Test can take into account influencing each other between test model and test model in test, and the authenticity of simulation is stronger, the knot of test
Fruit is more accurate；Model cushion block in the present invention is arranged on to the outside of test model, and is caused between II types weight and balance base
Gap is kept, so as to which balance base, test model are fixed on pinboard after bolt is passed through the hole of pinboard, II type weights
On, and groove is set in the lower part of pinboard, nuts is fixed, therefore can be by multiple balance bases, test model by groove
It is firmly secured in switching, test process is stable, error is small；Spacing is reserved between each group of pinboard of the invention, in spacing
At least one hole is reserved in the switching of alignment in the class, is placed in grooved rail by spacing convenient for nuts, therefore pinboard can lead to
Cross bolt, nut is more stably mounted on switching board spacer；The present invention will open up cable hole in the center of pinboard, therefore
Electric wire confusion, winding during testing can be reduced, improves efficiency.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structure diagram of the pinboard of the present invention.
Wherein, 1 is grooved rail, and 2 be cable hole, and 3 be board spacer of transferring, and 4 be wind-tunnel rotary base, and 5 be groove, and 6 be I
Type weight, 7 be bolt, and 8 be pinboard, and 9 be test model, and 10 be II type weights, and 11 be model cushion block, and 12 be balance, and 13 are
Hole.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
A kind of switching device of multi-model high frequency base balance experiment, it includes pinboard, switching board spacer, model pad
Block, I types weight, II type weights；Board spacer of transferring is mounted on wind-tunnel rotary base, and pinboard is mounted on switching board spacer,
Pinboard is fixed on by I types weight, nuts and bolt on switching board spacer；Test model is mounted on pinboard by balance
On, a test model is mounted on a balance, and balance base is fixed on pinboard by II types weight, nuts and bolt
On.
In the present embodiment, pinboard is one piece of square plate, and the hole of n × m array, the distance between row and row are opened up in square plate
Between the column and the column apart from all same, the specification all same in hole；A diameter of 1 centimetre of hole, hole and the cooperation of mating bolt make
With；And n and m can be equal, n=m in the present embodiment；A groove is opened up along every a line hole in the one side of square plate, groove
Depth is more than the depth of nuts, and the diameter of groove and the outer diameter of nuts match.In the present embodiment, the depth of groove is
0.7 centimetre of depth, the width of groove is 1.724 centimetres, and groove is used for fixing bolt cap.Each groove is mutually parallel.In square plate
Four fixed-focus angles make chamfering so that the quadrangle of square plate goes out the circular arc for fairing, avoids hurting sb.'s feelings using during this pinboard；The chamfering
Radius be 4 centimetres.Open up circular hole in the center of square plate, a diameter of 10 centimetres of circular hole；The circular hole can be used for cabling, avoid
The wire intertwist of experiment process influences to test.
The length and width of square plate are 88 × 88cm, and the thickness of square plate is 2.2cm.
Switching board spacer is prismatic shape, and switching board spacer is made of metal material.In the present embodiment, eight prisms
Body is divided into four groups, and four groups of prisms are separately mounted to above the grooved rail outer end of wind-tunnel turntable.In the present embodiment, prism
Specification be 15.3cm × 8cm × 4cm.
Model cushion block is prismatic shape, and model cushion block is made of metal material.In the present embodiment, four model cushion blocks
The outside of balance is uniformly arranged on, and the gap in a hole is at least kept between model cushion block and balance base, model cushion block
Thickness is identical with the thickness of balance base.In the present embodiment, the specification of prism is 4cm × 3cm × 1.5cm.
I types weight is rectangular-shape, and the center of cuboid offers circular hole, a diameter of 1.2 centimetres of circular hole.This implementation
Example in, nuts from switching board spacer between spacing pass through after head into grooved rail, shank of bolt wore pinboard hole,
It is fastened after the circular hole of I type weights with nut.The specification of cuboid is 8cm × 4cm × 1cm.The diameter of circular hole is more than the straight of bolt
Diameter.
II types weight is rectangular-shape, and the center of cuboid offers circular hole, a diameter of 1.2 centimetres of circular hole.This reality
It applies in example, II type weights one end is pressed on model cushion block, and the other end is pressed on balance base, in the circular hole and gap of II type weights
Hole is aligned, the shaft of bolt sequentially pass through hole in gap, II type weights circular hole after fastened with nut, and nuts is by turning
Groove on fishplate bar is fixed.The specification of cuboid is 6cm × 4cm × 0.8cm.The diameter of circular hole is more than the diameter of bolt.
Using the present invention when doing multi-model experiment, eight switching board spacers are divided into four groups first, four groups of pinboard pads
Block is individually positioned at four angles of wind-tunnel rotary base, and board spacer of transferring is placed in the upper surface of grooved rail, in every group
Spacing is maintained between two switching board spacers, which is more than nuts diameter；Then, pinboard is placed on four groups of pinboards
On cushion block so that pinboard is supported by board spacer of transferring；At four angles of pinboard, bolt is passed through into switching
Plate, nuts are headed into the grooved rail of wind-tunnel rotary base, and bolt shaft uses spiral shell again after sequentially passing through pinboard, I type weights
Cap fastens.And then the test model that will be tested is mounted on the corresponding position on pinboard, each test model by balance
It is securely connect with balance, balance is placed on the corresponding position on pinboard, then each circular balance base is equal on pinboard
Three to four block models cushion blocks of even placement；An II type weight is placed on each block models cushion block, an II type weights one end passes through
Model cushion block supports, and the other end is supported by balance base；Bolt pass through be located on pinboard II types weight and balance base it
Between hole, be then passed through the circular hole of II types weight center, then fixed bolt using nut on II type weights.In this way, by multiple
The test system of test model and balance composition is mounted on one piece of pinboard, so as on a wind-tunnel turntable once to more
A test model carries out wind tunnel test.
Above-described embodiment is invents preferable embodiment, but embodiments of the present invention are not limited by above-described embodiment
System, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (8)
1. a kind of switching device of multi-model high frequency base balance experiment, it is characterised in that：Including pinboard, switching board spacer,
Model cushion block, I types weight, II type weights open up the hole of n × m array, the specification all same in hole on pinboard；Switching board spacer
On wind-tunnel rotary base, pinboard is mounted on switching board spacer, is used after screw bolt passes pinboard, I type weights
Nut fastens；Test model is mounted on by balance on pinboard, and several models are uniformly placed in the outside of each balance base
Cushion block, II types weight push down model cushion block and balance base, tight with nut after screw bolt passes pinboard, II type weights
Gu.
2. a kind of switching device of multi-model high frequency base balance experiment according to claim 1, it is characterised in that：Pinboard
For square plate, the one side of pinboard opens up a groove along every a line hole, and the depth of groove is more than the depth of nuts, groove
Diameter and the outer diameter of nuts match.
3. a kind of switching device of multi-model high frequency base balance experiment according to claim 2, it is characterised in that：It is transferring
Four vertex of plate are rounded down.
4. a kind of switching device of multi-model high frequency base balance experiment according to claim 2, it is characterised in that：Model pad
Block is prism, and four model cushion blocks are uniformly arranged on the outside of balance base, and between model cushion block and balance base at least
The gap in a hole is kept, the thickness of model cushion block is identical with the thickness of balance base.
5. a kind of switching device of multi-model high frequency base balance experiment according to claim 4, it is characterised in that：II type pressures
Iron is rectangular-shape, and the center position of II type weights offers circular hole；II type weights one end is pressed on model cushion block, another
Side pressure is on balance base, the alignment of hole in the circular hole and gap of II type weights, the shaft of bolt sequentially pass through hole in gap,
It is fastened after the circular hole of II type weights with nut, and nuts is fixed by the groove on pinboard.
6. a kind of switching device of multi-model high frequency base balance experiment according to claim 1, it is characterised in that：Pinboard
Cushion block is prism, and eight prisms are divided into four groups, and four groups of prisms are separately mounted to the grooved rail outer end of wind-tunnel turntable
Above；There is spacing between two switching board spacers, spacing is more than the outer diameter of nuts, and spacing is at least aligned one on pinboard
A hole.
7. a kind of switching device of multi-model high frequency base balance experiment according to claim 6, it is characterised in that：I type pressures
Iron is rectangular-shape, and opens up circular hole in the center of I type weights；Nuts heads into after being passed through from the spacing between switching board spacer
In grooved rail, shank of bolt wore the hole of pinboard, I type weights circular hole after fastened with nut.
8. a kind of switching device of multi-model high frequency base balance experiment according to claim 1, it is characterised in that：Pinboard
Center offer cable hole for cabling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122998.0A CN108168834A (en) | 2018-02-07 | 2018-02-07 | A kind of switching device of multi-model high frequency base balance experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810122998.0A CN108168834A (en) | 2018-02-07 | 2018-02-07 | A kind of switching device of multi-model high frequency base balance experiment |
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| CN108168834A true CN108168834A (en) | 2018-06-15 |
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| CN201810122998.0A Pending CN108168834A (en) | 2018-02-07 | 2018-02-07 | A kind of switching device of multi-model high frequency base balance experiment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307580A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | A kind of synchronization gas bullet-wind Tunnel Measuring Pressure Tests device considering aerodynamic interference effect |
| CN110231138A (en) * | 2019-06-06 | 2019-09-13 | 南京大学 | A kind of flow tunnel testing device and application method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201697777U (en) * | 2010-06-03 | 2011-01-05 | 湖南大学 | Vehicle wind tunnel balance transfer system |
| CN102353511A (en) * | 2011-07-01 | 2012-02-15 | 浙江大学 | Wind tunnel force measurement balance multifunctional supporting device |
| KR101344891B1 (en) * | 2013-01-23 | 2013-12-26 | 한국항공우주연구원 | Wind tunnel balance for measuring axial force of long axis type test model |
| CN204314048U (en) * | 2014-12-19 | 2015-05-06 | 西南交通大学 | The flow tunnel testing device of aerodynamic forces of bridge parameter under the effect of test skew wind |
| CN204461708U (en) * | 2015-02-28 | 2015-07-08 | 中国船舶重工集团公司第七○二研究所 | Band sailing boat oceangoing ship flow tunnel testing device |
| CN204556216U (en) * | 2015-04-13 | 2015-08-12 | 中国水产科学研究院东海水产研究所 | For the fixed transfer device of model web plate wind tunnel test |
| CN105021370A (en) * | 2015-07-30 | 2015-11-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low speed high Reynolds number wind tunnel semi model force balance and force-measuring method |
| CN106153289A (en) * | 2015-04-08 | 2016-11-23 | 大连理工大学 | A kind of device for measuring force of model in wind tunnel |
| CN106289680A (en) * | 2016-08-01 | 2017-01-04 | 中国航天空气动力技术研究院 | Assay device for the quiet aeroelastic test of wind-tunnel |
| CN207798369U (en) * | 2018-02-07 | 2018-08-31 | 广州大学 | A kind of switching device of multi-model high frequency base balance experiment |
-
2018
- 2018-02-07 CN CN201810122998.0A patent/CN108168834A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201697777U (en) * | 2010-06-03 | 2011-01-05 | 湖南大学 | Vehicle wind tunnel balance transfer system |
| CN102353511A (en) * | 2011-07-01 | 2012-02-15 | 浙江大学 | Wind tunnel force measurement balance multifunctional supporting device |
| KR101344891B1 (en) * | 2013-01-23 | 2013-12-26 | 한국항공우주연구원 | Wind tunnel balance for measuring axial force of long axis type test model |
| CN204314048U (en) * | 2014-12-19 | 2015-05-06 | 西南交通大学 | The flow tunnel testing device of aerodynamic forces of bridge parameter under the effect of test skew wind |
| CN204461708U (en) * | 2015-02-28 | 2015-07-08 | 中国船舶重工集团公司第七○二研究所 | Band sailing boat oceangoing ship flow tunnel testing device |
| CN106153289A (en) * | 2015-04-08 | 2016-11-23 | 大连理工大学 | A kind of device for measuring force of model in wind tunnel |
| CN204556216U (en) * | 2015-04-13 | 2015-08-12 | 中国水产科学研究院东海水产研究所 | For the fixed transfer device of model web plate wind tunnel test |
| CN105021370A (en) * | 2015-07-30 | 2015-11-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | Low speed high Reynolds number wind tunnel semi model force balance and force-measuring method |
| CN106289680A (en) * | 2016-08-01 | 2017-01-04 | 中国航天空气动力技术研究院 | Assay device for the quiet aeroelastic test of wind-tunnel |
| CN207798369U (en) * | 2018-02-07 | 2018-08-31 | 广州大学 | A kind of switching device of multi-model high frequency base balance experiment |
Non-Patent Citations (1)
| Title |
|---|
| 徐安: "超高层建筑结构风效应的现场实测与风洞试验研究", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307580A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | A kind of synchronization gas bullet-wind Tunnel Measuring Pressure Tests device considering aerodynamic interference effect |
| CN109307580B (en) * | 2018-12-05 | 2019-08-13 | 重庆大学 | A kind of synchronization gas bullet-wind Tunnel Measuring Pressure Tests device considering aerodynamic interference effect |
| CN110231138A (en) * | 2019-06-06 | 2019-09-13 | 南京大学 | A kind of flow tunnel testing device and application method |
| CN110231138B (en) * | 2019-06-06 | 2024-03-19 | 南京大学 | Wind tunnel test device and use method |
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Application publication date: 20180615 |