CN104655390B - Mobile vehicle model wind tunnel test device on bridge based on accurate line slide rail - Google Patents
Mobile vehicle model wind tunnel test device on bridge based on accurate line slide rail Download PDFInfo
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- CN104655390B CN104655390B CN201510075250.6A CN201510075250A CN104655390B CN 104655390 B CN104655390 B CN 104655390B CN 201510075250 A CN201510075250 A CN 201510075250A CN 104655390 B CN104655390 B CN 104655390B
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
Mobile vehicle model wind tunnel test device on a kind of bridge based on accurate line slide rail, including auto model, force balance, velocity sensor, trailer system, and the bridge model supported by support, also include the accurate line slide rail being fixedly installed on the bridge model bridge floor, the accurate line slide rail is provided with the carriage being connected with trailer system, and the carriage is fixed in auto model；The force balance is fixed on the carriage by force-measuring support；The velocity sensor is arranged on the bridge floor of the bridge model.Present invention employs accurate line slide rail and sliding block, vibration of the auto model in moving process can be greatly reduced, realize the high-precision and stable operation of auto model, so as to make force balance more accurately test out the aerodynamic force of auto model, the component force of vehicle six under different wind directions, different wind speed, different speeds can be also tested；The system cost is low, principle is simple and operation is easy；The scope of application is very wide.
Description
Technical field
The present invention relates to wind-tunnel technique field, mobile vehicle mould on specially a kind of bridge based on accurate line slide rail
Type flow tunnel testing device.
Background technology
To ensure safe operation of the mobile vehicle under beam wind effect, it is necessary to test train vehicle under beam wind effect
Aerodynamic characteristic.During experiment, the beam wind provided by wind-tunnel perpendicular to bridge direction acts on vehicle and bridge, pull-in control system
Car amount speed is controlled, it is moved according to the process of " accelerating-steady-slow down ", and vehicle mould is being tested in steady mobile phase
Six square phase suffered by type.Now with mobile vehicle model wind tunnel test device, tested experiment device machining accuracy, tester and
The limitation of pull-in control system, for auto model in steady moving process, inevitably there is certain vibration in auto model,
When using balance test auto model aerodynamic force when, can not filter vehicle model inertia force influence, so as to influence test essence
Degree.
The content of the invention
In view of the above-mentioned problems, car is obviously reduced using accurate line slide rail and sliding block it is an object of the invention to provide one kind
Mobile vehicle model wind tunnel test device on the bridge based on accurate line slide rail of model vibration, technical scheme are as follows：
Mobile vehicle model wind tunnel test device on a kind of bridge based on accurate line slide rail, including auto model, dynamometry
Balance, velocity sensor, trailer system, and the bridge model supported by support, in addition to it is fixedly installed on the bridge mould
Accurate line slide rail on type bridge floor, the accurate line slide rail are provided with the carriage being connected with trailer system, the cunning
Dynamic device is fixed in auto model；The force balance is fixed on the carriage by force-measuring support；The speed
Sensor is arranged on the bridge floor of the bridge model.
Further, the carriage is fixedly connected by sliding block connecting rod by more than one sliding block and formed, described
Slider bottom is provided with U-shaped chute, and chute is fastened on the accurate line slide rail.
Further, the bridge model is uiform section, and bridge floor is provided with the U for being used for installing the accurate line slide rail
Type rail groove, the width of U-rail groove are more than the width of the carriage, the contact surface of accurate line slide rail and carriage
It is same plane with bridge floor；Slide rail platform is provided with below the accurate line slide rail, slide rail platform is fixed on slide rail platform
On, slide rail platform is fixed on the support of the bridge model.
Further, the trailer system is arranged on the band on wheel carrier including being located at two of bridge model both ends
Wheel, the belt wheel are driven by servomotor by transmission belt；Also include timing belt, the timing belt is around bridge model bridge floor and bridge
Bottom and two belt wheels one week, and the both ends of timing belt connect the both ends of the carriage respectively.
Further, the trailer system also includes being arranged at opening for increasing timing belt for the bridge model bridge bottom
The tensioning wheel of power.
Further, include rise firm effect bottom plate, the bottom plate be fixed on the bridge model support it
Under.
The beneficial effects of the invention are as follows：Present invention employs accurate line slide rail and sliding block, can greatly reduce auto model
Vibration in moving process, the high-precision and stable operation of auto model is realized, so as to make force balance more accurately test
Go out the aerodynamic force of auto model, can also test the component force of vehicle six under different wind directions, different wind speed, different speeds；The system into
This is low, principle is simple and operation is easy；And it is applicable to the wind-tunnel of aerodynamic force when a variety of vehicular traffics are located at different line forms
Experiment, the scope of application are very wide.
Brief description of the drawings
Fig. 1 is the overall structure diagram of mobile vehicle model wind tunnel test device on bridge.
Fig. 2 is cross-sectional view at A-A in Fig. 1.
In figure：1st, auto model；2nd, bridge model；3rd, slide rail platform；4th, force balance；5th, force-measuring support；6th, sliding block；7、
Sliding block connecting rod；8th, timing belt；9th, slide rail platform；10th, support；11st, tensioning wheel；12nd, bottom plate；13rd, wind tunnel floor；14、
Band wheel carrier；15th, belt wheel；16th, servomotor；17th, transmission belt；18th, accurate line slide rail；19th, velocity sensor.
Embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description：It is a kind of based on accurate line slide rail
Mobile vehicle model wind tunnel test device on bridge, including auto model 1, force balance 4, velocity sensor 19, trailer system, with
And the bridge model 2 supported by support 10, in addition to the accurate line slide rail being fixedly installed on the bridge model Bridge 2 face
18, the accurate line slide rail 18 is provided with the carriage being connected with trailer system, and the carriage is fixed on vehicle mould
In type 1；A number of velocity sensor 19 is set on the bridge floor of bridge model 2, velocity sensor 19 is contactless biography
Sensor, for test slider 6 by when speed.Bridge model 2 is uiform section along length, auto model 1 can be automobile or
The model of the ground traffic toolses such as train, the present embodiment select train model.
Wherein, carriage is fixedly connected by sliding block connecting rod 7 by more than one sliding block 6 and formed, the bottom of sliding block 6
Portion is provided with U-shaped chute, and chute is fastened on the accurate line slide rail 18, the present embodiment, from 3 sliding blocks 6.Accurate straight line is slided
Rail 18 and sliding block 6 are a supporting systems, and usually alloy aluminum products, lot of domestic and international brand can meet this requirement, its essence
Density requirements are generally P levels.Gap between sliding block 6 and accurate line slide rail 18 is can be controlled in 30 μ ms, hence it is evident that is reduced
The vibration of auto model 1, make it possible to use balance directly accurately to test the aerodynamic force of auto model 1.Accurate line slide rail
18 it is small-sized（15mm）, after being embedded in bridge floor（The wide 600mm of high ferro simply supported beam model bridge floor）, the interference very little to air-flow.
Force balance 4 is six COMPONENT BALANCEs, has the characteristics of single shaft overload capacity is strong, with data acquisition and processing unit phase
Even.Force balance 4 is fixedly mounted on the center of auto model 1, solid by force-measuring support 5 directly over accurate line slide rail 18
On sliding block connecting rod 7.
The bridge floor of bridge model 2 is provided with the U-rail groove for being used for installing the accurate line slide rail 18, U-rail groove
Width be more than the width of sliding block 6, the contact surface of accurate line slide rail 18 and sliding block 6 and bridge floor are same plane；Accurate straight line
Guide rail 18 is embedded in the U-rail groove in bridge model Bridge 2 face, and lower section is provided with the slide rail platform 3 made of rectangular steel plates, and slide rail is put down
Platform 3 is fixed on slide rail platform 9, and slide rail platform 9 is fixed on the support 10 of bridge model 2, is slided available for adjustment
The vertical ride comfort of rail platform 3.
Trailer system is arranged on the belt wheel 15 and timing belt 8 on wheel carrier 14 including being located at two of the both ends of bridge model 2,
The timing belt 8 is around bridge model Bridge 2 face and bridge bottom and two belt wheels 15 1 weeks, and the both ends of timing belt 8 connect cunning respectively
The both ends of block connecting rod 7.The timing belt 8 at bridge model Bridge 2 bottom passes through support 10, and is moved down by tensioning wheel 11 to increase
The tensile force of timing belt 8.Belt wheel 15 is driven by servomotor 16 by transmission belt 17, drives timing belt 8 to draw sliding block connecting rod
7, so as to realize that auto model 1 moves on bridge floor, and with the test slider 6 of velocity sensor 19 by when speed, inspection leads
Draw the accuracy of system.
Be using timing belt 8 because：Timing belt 8 has that transmission is accurate, fricton-tight during work, has constant gearratio；
Stable drive is low with buffering, damping capacity, noise；Transmission efficiency, up to 0.98, the features such as energy-saving effect is obvious.It is synchronous
Higher than steel wire rope or belt with 8 transmission positive effect, it can more accurately control the sliding speed of auto model 1, can make
Simulated test is closer to actual conditions.
Bottom plate 12 is further fixed under the support 10 of bridge model 2, bottom plate 12 is a horizontal steel plate, plays firm effect, experiment
When be placed on wind tunnel floor 13.
During work, the beam wind provided by wind-tunnel perpendicular to bridge direction acts on auto model 1 and bridge model 2, watches
Taking motor 16 drives the traction sliding block 6 of timing belt 8 to move, and by controlling the rotating speed regulation speed of servomotor 16, auto model 1 is transported
Before dynamic, force balance 4 starts the six square phase data suffered by collection vehicle model 1, in vehicle by " accelerating-steady-slow down "
Motion process after, stop collection；And the movement velocity of vehicle is tested using velocity sensor 19.Using steady during data processing
The data of section.The present apparatus can carry out double car intersection, queue driving and overtaking experiments, after to bridge floor appropriate reconstruction, can also survey
The aerodynamic force of vehicle when test run passes through tunnel face.
Claims (2)
1. mobile vehicle model wind tunnel test device on a kind of bridge based on accurate line slide rail, including auto model（1）, dynamometry
Balance（4）, velocity sensor（19）, trailer system, and by support（10）The bridge model of support（2）, it is characterised in that also
Including being fixedly installed on the bridge model（2）Accurate line slide rail on bridge floor（18）, the accurate line slide rail（18）On
Provided with the carriage being connected with trailer system, the carriage is fixed on auto model（1）It is interior；The force balance（4）
Pass through force-measuring support（5）It is fixed on the carriage；The velocity sensor（19）It is arranged on the bridge model（2）'s
On bridge floor；The bridge model（2）Bridge floor be provided be used for the accurate line slide rail is installed（18）U-rail groove, it is U-shaped
The width of rail groove is more than the width of the carriage, accurate line slide rail（18）Contact surface with carriage is with bridge floor
Same plane；
The carriage is by more than one sliding block（6）Pass through sliding block connecting rod（7）It is fixedly connected with composition, the slider bottom
Provided with U-shaped chute, chute is fastened in the accurate line slide rail（18）On；
The trailer system includes being located at bridge model（2）Two of both ends are arranged on band wheel carrier（14）On belt wheel（15）, institute
State belt wheel（15）By servomotor（16）Pass through transmission belt（17）Driving；Also include timing belt（8）, the timing belt（8）Around bridge
Beam model（2）Bridge floor and bridge bottom and two belt wheels（15）One week, and timing belt（8）Both ends connect the carriage respectively
Both ends.
2. mobile vehicle model wind tunnel test device on the bridge according to claim 1 based on accurate line slide rail, it is special
Sign is, the accurate line slide rail（18）Lower section is provided with slide rail platform（3）, slide rail platform（3）It is fixed on slide rail platform
（9）On, slide rail platform（9）It is fixed on the bridge model（2）Support（10）On.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510075250.6A CN104655390B (en) | 2015-02-12 | 2015-02-12 | Mobile vehicle model wind tunnel test device on bridge based on accurate line slide rail |
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|---|---|---|---|
| CN201510075250.6A CN104655390B (en) | 2015-02-12 | 2015-02-12 | Mobile vehicle model wind tunnel test device on bridge based on accurate line slide rail |
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| CN104655390A CN104655390A (en) | 2015-05-27 |
| CN104655390B true CN104655390B (en) | 2018-01-05 |
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| CN106153351B (en) * | 2016-06-27 | 2018-09-21 | 浙江大学 | Device for testing automobile pneumatic performance |
| CN107607286B (en) * | 2017-08-25 | 2019-11-05 | 大连理工大学 | A kind of bridge model wind tunnel force measurement device for realizing different windage yaw and the combination of the wind angle of attack |
| CN107991058B (en) * | 2017-12-18 | 2024-08-06 | 西南交通大学 | Mobile train wind tunnel model test system for closed bridge |
| CN108279131A (en) * | 2018-02-13 | 2018-07-13 | 中国汽车工程研究院股份有限公司 | The test method for working condition measurement device and the operating mode of overtaking other vehicles of overtaking other vehicles |
| CN108663189B (en) * | 2018-06-13 | 2019-03-26 | 西南交通大学 | Running train model balance mounting device in a kind of adjustable wind tunnel test |
| CN110006615A (en) * | 2019-04-12 | 2019-07-12 | 中南大学 | The running gear of hot-short wind tunnel model based on principle of inertia driving |
| CN110779675B (en) * | 2019-12-03 | 2024-06-07 | 西南交通大学 | Wind tunnel test device for vehicle and bridge model |
| CN110967162B (en) * | 2019-12-27 | 2024-05-24 | 西南交通大学 | Wind tunnel test device for testing aerodynamic force of vehicle under effect of bridge tower wake flow |
| CN113804395B (en) * | 2021-08-23 | 2024-05-28 | 中国水利水电第五工程局有限公司 | Testing device for simulating loading conditions of rail train and bridge |
| CN114383803B (en) * | 2022-03-22 | 2022-06-14 | 西南交通大学 | Wind tunnel test device for aerodynamic characteristics of pseudo-dynamic vehicle-bridge |
| CN115638951B (en) * | 2022-12-05 | 2023-03-10 | 中国市政工程西南设计研究总院有限公司 | Full-freedom-degree moving wind tunnel test device for vehicle on bridge |
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