CN210533660U - One-to-two automobile model wheel rotating wind tunnel test platform - Google Patents
One-to-two automobile model wheel rotating wind tunnel test platform Download PDFInfo
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- CN210533660U CN210533660U CN201921278331.6U CN201921278331U CN210533660U CN 210533660 U CN210533660 U CN 210533660U CN 201921278331 U CN201921278331 U CN 201921278331U CN 210533660 U CN210533660 U CN 210533660U
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- cover plate
- wind tunnel
- test platform
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Abstract
The utility model discloses a rotatory wind-tunnel test platform of one-to-two automobile model wheel, include: a rack; a wheel mounting shaft rotatably supported on the stand; the mounting flat plate is supported above the rack, and the surface of the mounting flat plate is provided with a sliding groove; the driving motor is detachably arranged on the mounting flat plate and can move along the sliding groove so as to be close to or far away from the wheel mounting shaft; a transmission belt; the two moving belt systems are respectively arranged on two sides of the installation flat plate and can support and drive the model wheels to rotate; wherein, the model wheel cover is established wheel installation axle both ends, and can follow the wheel installation axle is rotatory, the utility model provides a driving motor can remove along the spout, and then is close to or keeps away from wheel installation axle to be used for different wheel base automobile model tests.
Description
Technical Field
The invention relates to the technical field of automobile wind tunnel tests, in particular to a one-to-two automobile model wheel rotation wind tunnel test platform.
Background
At present, the global advocates the development of low-carbon economy, and the resistance reduction and emission reduction in the field of automobiles are undoubtedly an important ring of the low-carbon economy. With the rapid development of the domestic automobile industry, the research on the aerodynamic force of the automobile is more and more paid attention to the research and development of the whole automobile. Research shows that the aerodynamic resistance formed by the wheels and the wheel covers accounts for 30% of the total aerodynamic resistance of the whole vehicle, so that the aerodynamic research of the wheels and the wheel covers becomes a hot point, the rotation of the wheels can generate great influence on a flow field, in order to improve the simulation and test accuracy, many researchers concentrate on realizing the rotation of the wheels to fit the actual running state of the vehicle, and the tire deformation is difficult to realize in the simulation. The experimental research is the basis of theoretical analysis and numerical calculation and is used for checking the correctness and the reliability of theoretical results, and the automobile wind tunnel is important experimental equipment for aerodynamic research. In the initial stage of modeling, it is costly to perform both one-to-one model wind tunnel tests and real-world tests.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a one-to-two automobile model wheel rotation wind tunnel test platform has been developed, driving motor can remove along the spout, and then is close to or keeps away from wheel installation axle to be used for different wheel base automobile model tests.
The utility model discloses still another purpose can realize the wheel simultaneously and load the deformation through the ground clearance that the model was adjusted to adjustment supporting pad plate thickness, provides experimental foundation for tire deformation numerical simulation research.
The utility model provides a technical scheme does:
a one-to-two automobile model wheel rotation wind tunnel test platform comprises:
a rack;
a wheel mounting shaft rotatably supported on the stand;
the model wheel is sleeved at two ends of the wheel mounting shaft and can rotate along with the wheel mounting shaft;
the mounting flat plate is supported above the rack, and the surface of the mounting flat plate is provided with a sliding groove;
the driving motor is detachably arranged on the mounting flat plate and can move along the sliding groove so as to be close to or far away from the wheel mounting shaft;
the transmission belt is an annular belt with internal teeth, one end of the transmission belt is sleeved on the output shaft of the driving motor and meshed with the output shaft of the driving motor, the other end of the transmission belt is sleeved on the wheel mounting shaft and meshed with the wheel mounting shaft, and the output shaft of the driving motor and the wheel mounting shaft can synchronously rotate;
and the two moving belt systems are respectively arranged on two sides of the mounting flat plate and can support and rotate along with the model wheel.
Preferably, the stage includes:
a first cover plate;
the second cover plate is arranged above the first cover plate in parallel and is provided with two strip-shaped through holes;
a plurality of support armatures spaced between the first cover plate and the second cover plate;
the boundary suction system is arranged below the first cover plate, and suction ports at two ends of the boundary suction system are communicated with the strip-shaped through holes;
and the flow guide structure is connected with the first cover plate and the second cover plate and is positioned on one side of the cover plate.
Preferably, the method further comprises the following steps:
a load beam supported between the boundary suction system and the second cover plate;
and the supporting upright is arranged between the bearing cross beam and the mounting flat plate.
Preferably, the method further comprises the following steps: and the supporting base plate is arranged between the supporting upright post and the mounting flat plate.
Preferably, the method further comprises the following steps: and the mounting flat plate is detachably connected with the driving motor and is arranged in the sliding groove in a sliding manner.
Preferably, the wheel mounting shaft includes:
a drive shaft;
one end of the first coupler is connected with one end of the driving shaft;
one end of the first driven shaft is connected with the other end of the first coupler;
one end of the second coupling is connected with the other end of the driving shaft;
and one end of the second driven shaft is connected with the other end of the second coupling.
Preferably, the method further comprises the following steps:
a tension column disposed on one side of the belt;
the tensioning bracket is a T-shaped frame, and one end of the tensioning bracket is sleeved on the supporting column;
the tensioning roller is rotatably sleeved at the other end of the tensioning bracket;
the tensioning support can slide along the tensioning upright column, so that the tensioning wheel is attached to the transmission belt, and the transmission belt moves to drive the tensioning roller to rotate.
Preferably, the moving belt system includes:
the first roller train is arranged below the rack and positioned at one end of the rack;
the second roller train is arranged below the rack and positioned at the other end of the rack;
one end of the moving belt is sleeved on the first roller system, and the other end of the moving belt is sleeved on the second roller system.
Preferably, the model wheel further comprises a plurality of small rollers which are arranged at the bottom of the model wheel and are engaged with the moving belt.
Beneficial effects of the utility model
1. The rack is provided with a front end flow guide structure, the supporting upright posts are of airfoil sections, and the rest supporting devices are all positioned below the cover plate, so that the interference on the flow field quality is reduced; the pitot tube is adopted to realize feedback control on the flow velocity of the test section, so that gas acceleration caused by the existence of a flow guide structure is avoided;
2. the rack is provided with a boundary layer suction system and a moving belt system, the boundary layer suction flow can be automatically controlled according to the test wind speed, and the influence of the boundary layer flow on the test result is reduced;
3. the ground clearance of the model can be adjusted by adjusting the thickness of the supporting pad plate, and meanwhile, the loading deformation of the wheel is realized, so that a test basis is provided for the simulation research of the tire deformation numerical value;
4. the rack can be suitable for automobile model tests with different wheelbases and wheel bases, is convenient to adjust and use and has low test cost; and an arc-shaped groove is reserved between the flow guide structure and the cover plate and can rotate along with the rotary table to perform wind tunnel tests at different windward angles.
Drawings
Fig. 1 is the structure schematic diagram of the one-to-two automobile model wheel rotation wind tunnel test platform of the utility model.
Fig. 2 is a right side view of the rack of the present invention.
Fig. 3 is a schematic view of the experiment platform front axle driving device of the present invention.
Fig. 4 is a schematic view of the moving belt system of the present invention.
Fig. 5 is a front view of the rack for installing the standard automobile model of the present invention.
Figure 6 is the utility model discloses a rack right side view of installation standard automobile model.
Fig. 7 is a schematic view of the front axle for mounting the wheel according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1, the utility model provides a rotatory wind-tunnel test platform of one-to-two automobile model wheel includes: a gantry 100, a moving belt system 3, a power system 4, and a support system 5.
As shown in fig. 2, the gantry 100 includes: the device comprises a first cover plate 8 and a second cover plate 6, wherein the second cover plate 6 is arranged above the first cover plate 8 in parallel, and the surface of the second cover plate 6 is provided with two strip-shaped through holes; the plurality of supporting frameworks 10 are arranged between the first cover plate 8 and the second cover plate 6 at intervals, so that a gap is formed between the first cover plate 8 and the second cover plate 6; the boundary suction system 7 is positioned below the first cover plate 8, and the two ends of the boundary suction system 7 are provided with suction ports which are communicated with two strip-shaped through holes on the surface of the second cover plate 6. The flow guide structure 1 is connected with the first cover plate 8 and the second cover plate 6, is positioned on one side of the cover plates and serves as a front end flow guide structure, adopts a half-NACA 0012 airfoil section front section and guides airflow to eliminate interference of the rack 100 on flow field quality; the pitot tube 2 is arranged behind the flow guide structure and used for measuring the gas flow velocity above the bench 100 and realizing feedback control on the flow velocity of the test section.
An arc-shaped groove is reserved between the flow guide structure 1 and the cover plate 6 and can rotate along with the rotary table to perform wind tunnel tests with different windward angles.
The suction flow of the boundary layer suction device 7 can be automatically controlled according to the test wind speed, and the suction port must keep a proper distance with the model to ensure the suction effect.
The supporting system 5 comprises a mounting flat plate 501, a supporting upright 502 and a supporting base plate 503; the supporting system is arranged on a bearing beam 9, and the bearing beam is connected with a balance floating frame; the mounting plate 501 is used for mounting a driving motor and a transmission belt tensioning device on one hand, and is connected with an internal framework of an automobile model on the other hand to fix the model; the cross section of the supporting upright 502 adopts a NACA0012 airfoil section, so that the interference to a flow field is reduced, and the test precision is improved; the supporting base plate 503 is installed between the supporting upright 502 and the bearing beam 9, and the ground clearance of the automobile model can be adjusted by replacing the supporting base plate 503 with different thicknesses, and the bearing deformation of the tire is realized.
As shown in fig. 3, the front and rear axle power systems are the same, and only the front axle power system is taken as an example to be described in detail, and the power system 4 includes a driving motor 401, a motor mounting seat 402, a transmission gear 403, a transmission belt tensioning device 404, a transmission belt 405, a driving shaft 406, a coupling 407, a driven shaft 408, a rotation speed sensor 409, an encoding disk 410 and a transmission shaft support 411.
A drive shaft support 411 supported on the second cover plate 6 on the side of the mounting plate 501, a wheel mounting shaft rotatably supported on the drive shaft support 411; the surface of the mounting flat plate 501 is provided with a sliding groove; driving motor 401 can dismantle the setting on installation flat plate 501 through motor mounting panel 402 to can remove along the spout, and then be close to or keep away from the wheel installation axle, in order to be used for different wheel base automobile model tests.
The transmission belt 405 is an annular belt with internal teeth, one end of the transmission belt 405 is sleeved on the output shaft of the driving motor 401 and meshed with the output shaft of the driving motor 401, the other end of the transmission belt 405 is sleeved on the wheel mounting shaft and meshed with the wheel mounting shaft, the output shaft of the driving motor 401 and the wheel mounting shaft can synchronously rotate, the transmission belt 405 is a toothed transmission belt, installation is facilitated, and transmission precision is high.
The overspeed device tensioner is used for tensioning drive belt, sets up in drive belt one side, includes: the tensioning upright column 412 and the tensioning support 413 are T-shaped frames, one end of each tensioning upright column 412 is sleeved with each tensioning support 413, and each tensioning support 413 can slide along the corresponding tensioning upright column 412 to enable the tensioning roller 413 to be attached to the transmission belt 405; the tensioning roller 413 is rotatably sleeved at the other end of the tensioning bracket 412; wherein the belt 405 moves to rotate the tension roller 413. When in use, the house 413 is tensioned in a sliding way, so that the tensioning roller 413 is attached to the transmission belt 405, the running distance of the transmission belt 405 is changed, and the tensioning effect is achieved
The wheel mounting shaft includes: the test device comprises a driving shaft 406 and two driven shafts 408, wherein the two driven shafts 408 are respectively arranged at two ends of the driving shaft 406, the driven shafts 408 are connected with the driving shaft 406 through a coupler 407, a wheel model sleeve to be tested is arranged on the driven shafts 408 and can rotate along with the driving shaft, and the driven shafts 408 are replaced aiming at automobile model tests with different wheel pitches.
A rotating speed sensor 409 and an encoding disc 410 are installed on a driven shaft, the rotating speed sensor 409 and the encoding disc 410 are used for measuring the rotating speed of a wheel, and the rotating speed of the wheel needs to be matched with a test wind speed.
As shown in fig. 4, the moving belt system 3 includes a large roller 301, a small roller 302, a moving belt 303; the moving belt system 3 is arranged on the balance floating frame to ensure the force measuring precision; the small roller 302 is used for supporting the wheel to realize the bearing deformation of the wheel; the moving belt 303 moves along with the wheels, and the moving speed is the test wind speed.
As shown in FIGS. 5-7, the working process of the one-to-two automobile model wheel rotation wind tunnel test platform is taken as an example for further explanation
Sleeving the model wheels at two ends of the wheel mounting shaft, and detecting the wheel base of the current model wheel;
and calculating the experimental wheel base of the model car according to the experimental wheel base of the model car, and adjusting the position of the motor mounting seat 402 in the chute to ensure that the wheel base of the model wheel is equal to the experimental wheel base of the model car.
And starting the driving motor 401 to drive the model wheel to rotate, wherein the rotating speed is the test vehicle speed, and starting the moving belt system 3, and the moving speed of the moving belt system 3 is the test wind speed. The flow rate is detected by the belt tube 2.
The utility model has a front end flow guide structure, the supporting upright post adopts a wing section, and the rest supporting devices are all positioned below the cover plate, so that the interference to the flow field quality is reduced; the pitot tube is adopted to realize feedback control on the flow velocity of the test section, so that gas acceleration caused by the existence of a flow guide structure is avoided; the rack is provided with a boundary layer suction system and a moving belt system, the boundary layer suction flow can be automatically controlled according to the test wind speed, and the influence of the boundary layer flow on the test result is reduced; the ground clearance of the model can be adjusted by adjusting the thickness of the supporting pad plate, and meanwhile, the loading deformation of the wheel is realized, so that a test basis is provided for the simulation research of the tire deformation numerical value; the rack can be suitable for automobile model tests with different wheelbases and wheel bases, is convenient to adjust and use and has low test cost; and an arc-shaped groove is reserved between the flow guide structure and the cover plate and can rotate along with the rotary table to perform wind tunnel tests at different windward angles.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (9)
1. The utility model provides a rotatory wind tunnel test platform of one-to-two automobile model wheel which characterized in that includes:
a rack;
a wheel mounting shaft rotatably supported on the stand;
the model wheel is sleeved at two ends of the wheel mounting shaft and can rotate along with the wheel mounting shaft;
the mounting flat plate is supported above the rack, and the surface of the mounting flat plate is provided with a sliding groove;
the driving motor is detachably arranged on the mounting flat plate and can move along the sliding groove so as to be close to or far away from the wheel mounting shaft;
the transmission belt is an annular belt with internal teeth, one end of the transmission belt is sleeved on the output shaft of the driving motor and meshed with the output shaft of the driving motor, the other end of the transmission belt is sleeved on the wheel mounting shaft and meshed with the wheel mounting shaft, and the output shaft of the driving motor and the wheel mounting shaft can synchronously rotate;
and the two moving belt systems are respectively arranged on two sides of the mounting flat plate and can support and rotate along with the model wheel.
2. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 1, wherein the rack comprises:
a first cover plate;
the second cover plate is arranged above the first cover plate in parallel, and the surface of the second cover plate is provided with two strip-shaped through holes;
a plurality of support armatures spaced between the first cover plate and the second cover plate;
the boundary suction system is arranged below the first cover plate, and suction ports at two ends of the boundary suction system are communicated with the strip-shaped through holes;
and the flow guide structure is connected with the first cover plate and the second cover plate and is positioned on one side of the cover plate.
3. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 2, further comprising:
a load beam supported between the boundary suction system and the second cover plate;
and the supporting upright is arranged between the bearing cross beam and the mounting flat plate.
4. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 3, further comprising: and the supporting base plate is arranged between the supporting upright post and the mounting flat plate.
5. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 3, further comprising: and the motor mounting plate is detachably connected with the driving motor and is arranged in the sliding groove in a sliding manner.
6. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 5, wherein the wheel mounting shaft comprises:
a drive shaft;
one end of the first coupler is connected with one end of the driving shaft;
one end of the first driven shaft is connected with the other end of the first coupler;
one end of the second coupling is connected with the other end of the driving shaft;
and one end of the second driven shaft is connected with the other end of the second coupling.
7. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 5, further comprising:
a tension column disposed on one side of the belt;
the tensioning bracket is a T-shaped frame, and one end of the tensioning bracket is sleeved on the supporting upright post;
the tensioning roller is rotatably sleeved at the other end of the tensioning bracket;
the tensioning support can slide along the tensioning upright column, so that the tensioning roller is attached to the transmission belt, and the transmission belt moves to drive the tensioning roller to rotate.
8. The one-to-two automotive model wheel rotation wind tunnel test platform of claim 1, wherein the moving belt system comprises:
the first roller train is arranged below the rack and positioned at one end of the rack;
the second roller train is arranged below the rack and positioned at the other end of the rack;
one end of the moving belt is sleeved on the first roller system, and the other end of the moving belt is sleeved on the second roller system.
9. The one-to-two automobile model wheel rotation wind tunnel test platform according to claim 8, further comprising a plurality of small rollers disposed at the bottom of the model wheel and engaged with the moving belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921278331.6U CN210533660U (en) | 2019-08-08 | 2019-08-08 | One-to-two automobile model wheel rotating wind tunnel test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921278331.6U CN210533660U (en) | 2019-08-08 | 2019-08-08 | One-to-two automobile model wheel rotating wind tunnel test platform |
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| Publication Number | Publication Date |
|---|---|
| CN210533660U true CN210533660U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921278331.6U Expired - Fee Related CN210533660U (en) | 2019-08-08 | 2019-08-08 | One-to-two automobile model wheel rotating wind tunnel test platform |
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| CN (1) | CN210533660U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296808A (en) * | 2019-08-08 | 2019-10-01 | 吉林大学 | It is a kind of to rotate wind-tunnel test platform and its control method than two car model wheels |
| CN111811765A (en) * | 2020-06-23 | 2020-10-23 | 中国汽车工程研究院股份有限公司 | Automobile wind tunnel experiment system, experiment data acquisition method and storage medium |
-
2019
- 2019-08-08 CN CN201921278331.6U patent/CN210533660U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296808A (en) * | 2019-08-08 | 2019-10-01 | 吉林大学 | It is a kind of to rotate wind-tunnel test platform and its control method than two car model wheels |
| CN111811765A (en) * | 2020-06-23 | 2020-10-23 | 中国汽车工程研究院股份有限公司 | Automobile wind tunnel experiment system, experiment data acquisition method and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200515 Termination date: 20210808 |