CN108507751B - Variable opening collecting port of automobile environment wind tunnel - Google Patents
Variable opening collecting port of automobile environment wind tunnel Download PDFInfo
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- CN108507751B CN108507751B CN201810690313.2A CN201810690313A CN108507751B CN 108507751 B CN108507751 B CN 108507751B CN 201810690313 A CN201810690313 A CN 201810690313A CN 108507751 B CN108507751 B CN 108507751B
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- 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
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention relates to a variable opening collecting port of an automobile environment wind tunnel, which comprises a collecting port supporting frame, a top door plate, a left front door plate, a right front door plate, a left rear door plate and a right rear door plate, wherein the collecting port supporting frame is integrally in a shape of a door frame; the rear end of the left front door plate is hinged with the front end of the left rear door plate and is driven to rotate by the left front door plate adjusting mechanism; the rear end of the right front door plate is hinged with the front end of the right rear door plate and is driven to rotate by the right front door plate adjusting mechanism; the top door plate, the left front door plate, the right front door plate, the left rear door plate, the right rear door plate and the ground below the collecting opening supporting frame jointly enclose an air flow channel of the collecting opening with variable opening. On the premise of not changing the root size of the collecting port, the test requirements of small vehicles and large vehicles are met, the ideal test result is ensured, and the method has great advantages in construction cost and operation energy consumption.
Description
Technical Field
The invention relates to the technical field of automobile environment wind tunnel test equipment, in particular to a variable opening collecting port for an automobile environment wind tunnel test section.
Background
The test section of the automobile environment wind tunnel consists of a nozzle, a collecting port and the like, wind is blown out from the nozzle, passes through a test vehicle and then returns air from the collecting port.
The collecting port is a rectangular channel and is used for recovering air flow from the nozzle of the wind tunnel test section, and the existing collecting port is formed by enclosing three door plates (namely a top plate, a left door plate and a right door plate) and the ground together. Wherein the left door plate and the right door plate are fixed so as to ensure that the root size of the collecting port is unchanged; the top plate can translate up and down along the vertical guide rail, thereby changing the height of the collection port as required.
The size of the design of the collecting opening of the automobile environment wind tunnel is determined based on the size of the tested automobile model, and for the passenger car, the width of the collecting opening is relatively smaller due to the smaller size of the automobile model, and the test requirements of the car or SUV can be met simultaneously by translating the top plate; however, for commercial vehicles such as buses, the width of the collecting port needs to be increased to ensure smooth air return due to the large size of the vehicles, but the root size of the existing collecting port cannot be changed, so that the left door plate and the right door plate cannot translate like a top plate in structural design; if the test requirements of various vehicle types with different sizes are considered, a huge collecting port is needed to be used for wind tunnel test, so that the wind tunnel has huge size, high equipment cost and unsatisfactory test results.
Disclosure of Invention
Aiming at the technical problems, the invention aims to provide the collecting port with the variable opening size for the automobile environment wind tunnel test, which can meet the test requirements of small vehicles and large vehicles and ensure ideal test results on the premise of not changing the root size of the collecting port.
The technical scheme adopted by the invention is as follows: the utility model provides a variable aperture collection mouth of car environment wind-tunnel, includes collection mouth braced frame, top door plant, left front door plant, right front door plant, left back door plant and right back door plant, collection mouth braced frame wholly takes the shape of "door" word frame, the rear end of top door plant articulates in "door" word frame and is located the top of "door" word frame, and top door plant is driven by top door plant adjustment mechanism and rotates; the rear end of the left rear door plate is hinged in the door-shaped frame and positioned at the left side of the door-shaped frame, and the left rear door plate is driven to rotate by a left rear door plate adjusting mechanism; the rear end of the right rear door plate is hinged in the door-shaped frame and positioned on the right side of the door-shaped frame, and the right rear door plate is driven to rotate by a right rear door plate adjusting mechanism; the rear end of the left front door plate is hinged with the front end of the left rear door plate and is driven to rotate by the left front door plate adjusting mechanism; the rear end of the right front door plate is hinged with the front end of the right rear door plate and is driven to rotate by the right front door plate adjusting mechanism; the top door plate, the left front door plate, the right front door plate, the left rear door plate, the right rear door plate and the ground below the collecting opening supporting frame jointly enclose an airflow channel with a variable opening collecting opening, and the top door plate adjusting mechanism, the left rear door plate adjusting mechanism, the right rear door plate adjusting mechanism, the left front door plate adjusting mechanism and the right front door plate adjusting mechanism are all located on the periphery of the airflow channel.
As the preference of above-mentioned scheme, collect mouth braced frame's top intermediate position department is provided with top door plant adjustment mechanism mounting bracket, and top door plant adjustment mechanism mounting bracket is by back forward gradually rising and is formed triangle-shaped frame, top door plant adjustment mechanism's one end links to each other with triangle-shaped frame, and the other end links to each other with top door plant. The triangular frame which is gradually raised from back to front is additionally arranged at the middle position of the top of the collecting port supporting frame to serve as the mounting frame of the top door plate adjusting mechanism, so that the rear end of the collecting port supporting frame can be matched with the root size of the automobile environment wind tunnel test collecting port, the mounting of the collecting port supporting frame is met on the premise that the root size of the test collecting port is not changed, and the top door plate adjusting mechanism is located above the top door plate, so that an air flow channel is prevented from being occupied.
Further, one end of the left rear door plate adjusting mechanism and one end of the right rear door plate adjusting mechanism are respectively connected with the ground support seats respectively provided, the other end of the left rear door plate adjusting mechanism is connected with the left rear door plate, and the other end of the right rear door plate adjusting mechanism is connected with the right rear door plate; one end of the left front door plate adjusting mechanism is connected with the fixed support on the left rear door plate, and the other end of the left front door plate adjusting mechanism is connected with the left front door plate; one end of the right front door plate adjusting mechanism is connected with the fixed support on the right rear door plate, and the other end of the right front door plate adjusting mechanism is connected with the right front door plate. The left rear door plate is additionally provided with a fixing support serving as a mounting point of the left front door plate adjusting mechanism, the right rear door plate is additionally provided with a fixing support serving as a mounting point of the right front door plate adjusting mechanism, and linkage of the left front door plate and the right front door plate and linkage of the right front door plate and the right rear door plate are realized.
Still further, the front end of top door plant, left front door plant, right front door plant all extends to the place ahead of collecting the mouth braced frame, and the afterbody of convenient test vehicle stretches into in the collecting the mouth to obtain shorter test section length, and then obtain the air current quality of relative more ideal.
Still further, top door plant adjustment mechanism, left back door plant adjustment mechanism, right back door plant adjustment mechanism, left front door plant adjustment mechanism and right front door plant adjustment mechanism all comprise motor, screw-nut mechanism. The motor drives the screw rod to rotate, and the screw rod drives the nut mechanism to move, so that the screw rod nut mechanism is lengthened or shortened, and the corresponding door plates are driven to rotate.
Furthermore, the collecting port supporting frame is of a steel frame structure, so that the manufacturing cost is low, and the strength is reliable.
The invention has the beneficial effects that:
(1) The left and right door plates of the collecting opening are hinged together by front and rear plates and are driven by respective adjusting mechanisms to rotate to form a straight cylindrical or horn-shaped collecting opening with various opening degrees, and the horn-shaped collecting opening is used for adjusting air flow and meeting the test requirements of vehicles with various sizes on the premise of not changing the root size of the collecting opening;
(2) The length of the collecting port is longer, so that the tail part of a test vehicle (such as a passenger car) can be allowed to extend into the collecting port, the length of a shorter test section can be obtained, and further, the relatively more ideal air flow quality can be obtained;
(3) The size of the wind tunnel is limited by the size of the large-sized vehicle, and the existing environment which can simultaneously give consideration to the tests of the small-sized vehicle and the large-sized vehicle has relatively huge size, so that the wind tunnel has huge size; the collecting port with the variable opening can meet the test requirements of large and small vehicles simultaneously by slightly changing the collecting port of the environmental wind tunnel for the small vehicles, and has great advantages in terms of construction cost and operation energy consumption.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a cross-sectional view A-A of fig. 1.
Fig. 5 is an enlarged view of a portion B of fig. 4.
Fig. 6 is an enlarged view of a portion C of fig. 4.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1 to 6, a collecting port with variable opening degree for an automobile environment wind tunnel is mainly composed of a collecting port supporting frame 1, a top door plate 2, a left front door plate 3, a right front door plate 4, a left rear door plate 5, a right rear door plate 6, a top door plate adjusting mechanism 7, a left rear door plate adjusting mechanism 8, a right rear door plate adjusting mechanism 9, a left front door plate adjusting mechanism 10 and a right front door plate adjusting mechanism 11.
The collecting opening supporting frame 1 is in a shape of a door-shaped frame as a whole, and the collecting opening supporting frame 1 is preferably in a steel frame structure. The collection port support frame 1 is fixed on the ground.
The rear end of the top door plate 2 is hinged in the door-shaped frame and positioned at the top of the door-shaped frame, and the top door plate 2 is driven to rotate by a top door plate adjusting mechanism 7.
The rear end of the left rear door plate 5 is hinged in the door-shaped frame and positioned at the left side of the door-shaped frame, and the left rear door plate 5 is driven to rotate by a left rear door plate adjusting mechanism 8.
The rear end of the right rear door plate 6 is hinged in the door-shaped frame and positioned on the right side of the door-shaped frame, and the right rear door plate 6 is driven to rotate by a right rear door plate adjusting mechanism 9.
The rear end of the left front door plate 3 is hinged with the front end of the left rear door plate 5, and is driven to rotate by a left front door plate adjusting mechanism 10.
The rear end of the right front door plate 4 is hinged with the front end of the right rear door plate 5, and is driven to rotate by a right front door plate adjusting mechanism 11.
Preferably, the front ends of the top door plate 2, the left front door plate 3 and the right front door plate 4 extend to the front of the collecting opening supporting frame 1, so that the tail part of the test vehicle can conveniently extend into the collecting opening, the length of a shorter test section can be obtained, and the relatively more ideal air flow quality can be obtained.
In addition, the top door plate adjusting mechanism 7, the left rear door plate adjusting mechanism 8, the right rear door plate adjusting mechanism 9, the left front door plate adjusting mechanism 10 and the right front door plate adjusting mechanism 11 are all composed of a motor and a screw-nut mechanism. Of course, the adjusting mechanism is not limited to the combination mode of the motor and the screw-nut mechanism, but can also be a structural mode of a hydraulic supporting rod and an electric supporting rod,
the top door plate 2, the left front door plate 3, the right front door plate 4, the left rear door plate 5, the right rear door plate 6 and the ground below the collecting opening supporting frame 1 jointly enclose an airflow channel with a variable opening collecting opening, and the top door plate adjusting mechanism 7, the left rear door plate adjusting mechanism 8, the right rear door plate adjusting mechanism 9, the left front door plate adjusting mechanism 10 and the right front door plate adjusting mechanism 11 are all positioned on the periphery of the airflow channel and do not occupy the space of the airflow channel.
Preferably, a top door adjusting mechanism mounting frame 1a is provided at a top center position of the collecting port supporting frame 1 for mounting the top door adjusting mechanism 7. The top door plate adjusting mechanism mounting frame 1a gradually rises from back to front to form a triangular frame, one end of the top door plate adjusting mechanism 7 is connected with the triangular frame, and the other end is connected with the top door plate 2.
In addition, one end of the left rear door plate adjusting mechanism 8 and one end of the right rear door plate adjusting mechanism 9 are respectively connected with the ground support which is respectively provided, the other end of the left rear door plate adjusting mechanism 8 is connected with the left rear door plate 5, and the other end of the right rear door plate adjusting mechanism 9 is connected with the right rear door plate 6. One end of the left front door plate adjusting mechanism 10 is connected with a fixed support 12 on the left rear door plate 5, and the other end is connected with the left front door plate 3; one end of the right front door plate adjusting mechanism 11 is connected with a fixed support 12 on the right rear door plate 6, and the other end is connected with the right front door plate 4.
Claims (4)
1. The utility model provides a collection mouth of variable aperture of car environment wind-tunnel which characterized in that: the collecting port supporting frame (1) is integrally shaped like a door, the rear end of the top door plate (2) is hinged in the door frame and positioned at the top of the door frame, and the top door plate (2) is driven to rotate by a top door plate adjusting mechanism (7); the rear end of the left rear door plate (5) is hinged in the door-shaped frame and positioned at the left side of the door-shaped frame, and the left rear door plate (5) is driven to rotate by a left rear door plate adjusting mechanism (8); the rear end of the right rear door plate (6) is hinged in the door-shaped frame and positioned on the right side of the door-shaped frame, and the right rear door plate (6) is driven to rotate by a right rear door plate adjusting mechanism (9); the rear end of the left front door plate (3) is hinged with the front end of the left rear door plate (5), and is driven to rotate by a left front door plate adjusting mechanism (10); the rear end of the right front door plate (4) is hinged with the front end of the right rear door plate (6), and is driven to rotate by a right front door plate adjusting mechanism (11); the top door plate (2), the left front door plate (3), the right front door plate (4), the left rear door plate (5), the right rear door plate (6) and the ground below the collecting opening supporting frame (1) jointly enclose an air flow channel of the collecting opening with variable opening, and the top door plate adjusting mechanism (7), the left rear door plate adjusting mechanism (8), the right rear door plate adjusting mechanism (9), the left front door plate adjusting mechanism (10) and the right front door plate adjusting mechanism (11) are all arranged on the periphery of the air flow channel;
a top door plate adjusting mechanism mounting frame (1 a) is arranged at the middle position of the top of the collecting opening supporting frame (1), the top door plate adjusting mechanism mounting frame (1 a) gradually rises from back to front to form a triangular frame, one end of a top door plate adjusting mechanism (7) is connected with the triangular frame, and the other end of the top door plate adjusting mechanism is connected with the top door plate (2); the collecting opening supporting frame (1) is of a steel frame structure.
2. The automotive environment wind tunnel variable opening collection port according to claim 1, wherein: one end of the left rear door plate adjusting mechanism (8) and one end of the right rear door plate adjusting mechanism (9) are respectively connected with the ground supports respectively provided, the other end of the left rear door plate adjusting mechanism (8) is connected with the left rear door plate (5), and the other end of the right rear door plate adjusting mechanism (9) is connected with the right rear door plate (6); one end of the left front door plate adjusting mechanism (10) is connected with a fixed support (12) on the left rear door plate (5), and the other end of the left front door plate adjusting mechanism is connected with the left front door plate (3); one end of the right front door plate adjusting mechanism (11) is connected with a fixed support (12) on the right rear door plate (6), and the other end is connected with the right front door plate (4).
3. The automotive environment wind tunnel variable opening collection port according to claim 1, wherein: the front ends of the top door plate (2), the left front door plate (3) and the right front door plate (4) extend to the front of the collecting port supporting frame (1).
4. The automotive environment wind tunnel variable opening collection port according to claim 1, wherein: the top door plate adjusting mechanism (7), the left rear door plate adjusting mechanism (8), the right rear door plate adjusting mechanism (9), the left front door plate adjusting mechanism (10) and the right front door plate adjusting mechanism (11) are composed of a motor and a screw-nut mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690313.2A CN108507751B (en) | 2018-06-28 | 2018-06-28 | Variable opening collecting port of automobile environment wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690313.2A CN108507751B (en) | 2018-06-28 | 2018-06-28 | Variable opening collecting port of automobile environment wind tunnel |
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| Publication Number | Publication Date |
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| CN108507751A CN108507751A (en) | 2018-09-07 |
| CN108507751B true CN108507751B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810690313.2A Active CN108507751B (en) | 2018-06-28 | 2018-06-28 | Variable opening collecting port of automobile environment wind tunnel |
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| CN (1) | CN108507751B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320001B (en) * | 2019-07-31 | 2020-12-11 | 中国空气动力研究与发展中心低速空气动力研究所 | Open jet wind tunnel collector |
| CN111060279B (en) * | 2019-12-31 | 2022-03-01 | 武汉武船重型装备工程有限责任公司 | Rotary wind tunnel isolation door |
| CN113899521A (en) * | 2021-09-30 | 2022-01-07 | 中国航空工业集团公司哈尔滨空气动力研究所 | Large-scale acoustic wind tunnel aperture-adjustable sound absorption collector |
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| CN208383418U (en) * | 2018-06-28 | 2019-01-15 | 中国汽车工程研究院股份有限公司 | Variable degree collection port for automotive environment wind tunnel test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6997049B2 (en) * | 2001-08-29 | 2006-02-14 | Aero Systems Engineering, Inc. | Wind tunnel and collector configuration therefor |
| US6748800B2 (en) * | 2001-08-29 | 2004-06-15 | Aero Systems Engineering, Inc. | Wind tunnel and collector configuration therefor |
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2018
- 2018-06-28 CN CN201810690313.2A patent/CN108507751B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2927023Y (en) * | 2006-06-22 | 2007-07-25 | 同济大学 | Low-speed pneumatic opening structure |
| CN101071092A (en) * | 2007-06-14 | 2007-11-14 | 同济大学 | Collection opening structure for open closed-circuit wind tunnel |
| CN201060095Y (en) * | 2007-06-14 | 2008-05-14 | 同济大学 | Collecting mouth for inhibiting opening return-flow wind tunnel low frequency oscillation |
| EP2669650A2 (en) * | 2012-05-30 | 2013-12-04 | Forschungsinstitut Für Kraftfahrwesen Und Fahrzeugmotoren Stuttgart | Wind tunnel nozzle and wind tunnel |
| CN103837319A (en) * | 2014-03-31 | 2014-06-04 | 长城汽车股份有限公司 | Door assembly applied to wind tunnel laboratory and used for entrance and exit of vehicles |
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