CN110779675A - Wind tunnel test device for vehicle and bridge model - Google Patents
Wind tunnel test device for vehicle and bridge model Download PDFInfo
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- CN110779675A CN110779675A CN201911222169.0A CN201911222169A CN110779675A CN 110779675 A CN110779675 A CN 110779675A CN 201911222169 A CN201911222169 A CN 201911222169A CN 110779675 A CN110779675 A CN 110779675A
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- 238000012360 testing method Methods 0.000 title claims abstract description 118
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
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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
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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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
- G01M9/08—Aerodynamic models
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Abstract
The invention discloses a wind tunnel test device for vehicle and bridge models, which comprises a vehicle model test component and a bridge model test component, wherein the vehicle model test component comprises a vehicle model testing component and a bridge model testing component; and a gap is reserved between the vehicle model testing component and the bridge model testing component. In the invention, the height of the vertical fixing positions of the vehicle model testing assemblies on the cavity walls on the two sides of the laboratory is adjusted, so that a proper distance is kept between the vehicle model and the bridge model in the vertical direction. The aerodynamic force test of the vehicle models with different heights and widths and the beam section models with different beam heights can be completed by the test device. Therefore, the wind tunnel test device is suitable for various vehicle models and various bridge models, has wide application range, and can realize the test function under the action of oblique wind.
Description
Technical Field
The invention relates to the technical field of wind tunnel tests of vehicle models, in particular to a wind tunnel test device for vehicle and bridge models.
Background
In order to ensure safe and stable operation of various vehicles on a bridge in a complex wind environment, it is necessary to test the aerodynamic states of the vehicles and the bridge under the action of oblique wind. In practical situations, the vehicle and the bridge have mutual pneumatic interference when the vehicle is at any position on the bridge; in special cases, when two or more vehicles coexist on the bridge, the aerodynamic state of the vehicles and the bridge becomes more complex. In an actual wind environment, an obvious non-orthogonal phenomenon, namely a wind drift angle, exists between the horizontal direction of the incoming wind direction and the bridge; the incoming wind direction has obvious non-orthogonal phenomenon between the vertical direction and the bridge, namely, a wind attack angle.
At present, most of vehicle models in a wind tunnel test device for vehicle models and bridge models are static above a bridge floor, only a single object of the bridge or the static vehicle models is considered in the test, the mutual pneumatic influence between the vehicle and the bridge is not considered, the two are actually influenced mutually, the existing test device ignores the influence, the test result is deviated from the actual situation, and the test result is inaccurate. However, the design of the test device cannot test the aerodynamic forces of the vehicle and the bridge when two or more vehicles exist on the bridge at the same time and when a wind drift angle and an attack angle exist between an incoming flow and the bridge.
Disclosure of Invention
The invention provides a wind tunnel test device for vehicle and bridge models, which can simultaneously test the aerodynamic force of a vehicle and a bridge under different relative incoming flow wind deflection angles and wind attack angles when the vehicle exists on the bridge under the action of oblique wind, so that the test result is more practical, the test time is greatly shortened, the test efficiency is improved, and a more reliable reference basis is provided for the design of the vehicle and the bridge.
In order to achieve the purpose, the invention adopts the following technical scheme: a wind tunnel test device for vehicle and bridge models comprises:
the vehicle model testing assembly comprises a plurality of parallel transverse slide rails and a plurality of parallel longitudinal slide rails, and the longitudinal slide rails are arranged along the transverse slide rails in a sliding manner; the vehicle model testing assembly further comprises a plurality of vehicle force measuring balances, the vehicle force measuring balances are arranged in a sliding mode along the corresponding longitudinal sliding rails, and the vehicle force measuring balances are connected with the vehicle model through rotating connectors;
the bridge model testing assembly is arranged below the vehicle model testing assembly and comprises a bottom turntable, two slidable supports are arranged on the bottom turntable, each slidable support is provided with an outer turntable, each outer turntable is provided with an inner turntable capable of rotating relative to the outer turntable, a supporting rod is arranged between the two inner turntables, a beam section force measuring balance is arranged on the supporting rod, and the beam section force measuring balance is connected with the bridge model;
and a gap is reserved between the vehicle model testing component and the bridge model testing component.
As a further description of the above technical solution:
the plurality of transverse sliding rails and the plurality of longitudinal sliding rails are two, the two transverse sliding rails and the two longitudinal sliding rails form a well frame shape, and two ends of the two transverse sliding rails are fixed on the hole walls on two sides of the laboratory.
As a further description of the above technical solution:
and a longitudinal stiffening rod is fixedly arranged between the two transverse sliding rails so as to increase the overall rigidity of the vehicle model test assembly.
As a further description of the above technical solution:
the longitudinal slide rail and the transverse slide rail are connected in a sliding manner through a transverse slide block; specifically, the joints of the longitudinal slide rails and the transverse slide rails are provided with transverse slide blocks, one ends of the transverse slide blocks are slidably connected with the transverse slide rails, and the other ends of the transverse slide blocks are fixed on the longitudinal slide rails, so that the longitudinal slide rails can slide on the transverse slide rails.
As a further description of the above technical solution:
the number of the vehicle force-measuring balances is two, the longitudinal slide rail is provided with a longitudinal slide block in sliding fit with the longitudinal slide rail, and the lower end of the longitudinal slide block is fixedly connected with the vehicle force-measuring balances; the vertical slide rail and the vertical slide block and the transverse slide rail and the transverse slide block are both provided with positioning screws, so that a vehicle model after a moving position is conveniently fixed, and the vertical slide rail and the transverse slide rail are both precise linear chute rails, so that the vibration of the vehicle model in a test wind field can be greatly reduced, and the high-precision measurement of the aerodynamic force of the vehicle is ensured.
As a further description of the above technical solution:
the bottom carousel is fixed on the laboratory bottom plate through the pivot, a plurality of spouts have been seted up to the up end of bottom carousel, the slidable support includes rectangle steel sheet, door shape steel connecting piece, support base and montant, the rectangle steel sheet with the bottom carousel passes through the bolt spout slidable connection, the welding of door shape steel connecting piece is in on the rectangle steel sheet, the support base with the door shape steel connecting piece passes through the bolt and can dismantle the connection, the montant welding is in on the support base, the montant with outside carousel fixed connection.
As a further description of the above technical solution:
the number of the sliding grooves is 12, and the 12 sliding grooves are uniformly arranged along the center of the bottom turntable at intervals of 30 degrees.
As a further description of the above technical solution:
the outer side rotary table is provided with two sections of arc-shaped sliding grooves which are oppositely arranged, and the inner side rotary table penetrates through the arc-shaped sliding grooves through bolts and is relatively rotatably connected with the outer side rotary table; a thin rubber pad is arranged between the outer side rotary table and the inner side rotary table to increase the friction force after the outer side rotary table and the inner side rotary table rotate relatively, and the relative positions of the outer side rotary table and the inner side rotary table can be reliably fixed by means of an upper rotary table bolt.
As a further description of the above technical solution:
the bridge model comprises a front compensation beam section, a middle force-measuring beam section and a rear compensation beam section, wherein the compensation beam section and the rear compensation beam section are respectively fixedly connected with the supporting rod through a cushion block, the supporting rod is fixedly connected with the beam section force-measuring balance through a beam section balance lower backing plate, and the beam section force-measuring balance is fixedly connected with the middle force-measuring beam section through a beam section balance upper backing plate.
As a further description of the above technical solution:
the vehicle model can be a single-trip train model, and the single-trip train model comprises a train front section, a train middle section and a train rear section, wherein the train middle section is connected with the vehicle force measuring balance through a rotary connecting piece, and the train front section and the train rear section are connected with the longitudinal sliding block through rigid thin rods; at the moment, the front section and the rear section of the train are used as aerodynamic transition sections, the aerodynamic transition sections are used for weakening the influence of three-dimensional streaming and testing the aerodynamic force of the middle section of the train more accurately, and the wind shielding effect of the wheels is small, so that the wheels are not arranged on the vehicle model.
The invention has the following beneficial effects:
in the invention, the height of the vertical fixing positions of the vehicle model testing assemblies on the cavity walls on the two sides of the laboratory is adjusted, so that a proper distance is kept between the vehicle model and the bridge model in the vertical direction. The aerodynamic force test of the vehicle models with different heights and widths and the beam section models with different beam heights can be completed by the test device. Therefore, the wind tunnel test device is suitable for various vehicle models and various bridge models, and has a wide application range.
The device provided by the invention has the advantages that the aerodynamic forces of the vehicle model and the bridge model can be simultaneously tested by adopting the arrangement mode that the vehicle model testing component for testing the aerodynamic force of the vehicle at the upper part and the lower bridge model aerodynamic force testing component are separated from each other. Compared with the existing test device which can only test a single structure of a vehicle model or a bridge model at the same time, the test device provided by the invention can greatly save the test time and improve the test efficiency.
The test device can realize aerodynamic force tests of two vehicle models at different relative positions on a bridge, and can also realize synchronous tests of respective aerodynamic force three-component forces of the vehicle models and the bridge models under different relative incoming flow wind drift angles and wind attack angles. The test device can be directly placed in a laboratory with a water tank at the bottom and a wind tunnel at the upper part for wind-wave combined test. The testing device has multiple functions and reasonable design.
The static test system is simple in structure and convenient to operate, only vertical rods with small wind shielding areas, cross transverse slide rails and longitudinal slide rails are added compared with a conventional static test system, and the cross transverse slide rails and the cross longitudinal slide rails adopt thin components as far as possible, so that small interference on air flow in a laboratory is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of a wind tunnel test device for vehicle and bridge models, provided by the invention;
FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along plane C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken along plane D-D of FIG. 1;
FIG. 6 is a cross-sectional view taken along plane E-E of FIG. 1;
FIG. 7 is a schematic diagram of a vehicle model testing assembly when the vehicle model is a three-segment train model according to the present invention.
In the figure: 1-bottom turntable; 2-bracket bolt; 3-bottom turnplate bolt; 4-a support base; 5-rectangular steel plate; 6-door-shaped steel connecting pieces; 7-vertical rod; 8-outer turntable; 9-inner rotary table; 10-upper turntable bolt; 11-a support bar; 12-a front compensating beam section; 13-a middle force measuring beam section; 14-a rear compensating beam section; 15-cushion block; 16-beam section force balance; 17-beam section balance upper backing plate; 18-beam section balance lower backing plate; 19-vehicle model; 20-vehicle force balance; 21-longitudinal slide block; 22-longitudinal slide rail; 23-a transverse slide; 24-a transverse slide rail; 25-longitudinal stiffeners; 26-arc chute; 27-a chute; 28-front section of train; 29-middle section of train; 30-rear section of train; 31-a rotating connection; 32-rigid thin rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a wind tunnel test device for vehicle and bridge models, which can simultaneously test the aerodynamic force of a vehicle and a bridge under different relative incoming flow wind deflection angles and wind attack angles when the vehicle exists on the bridge under the action of oblique wind, so that the test result is more practical, the test time is greatly shortened, the test efficiency is improved, and a more reliable reference basis is provided for the design of the vehicle and the bridge.
Referring to fig. 1-6, one embodiment of the present invention is provided: a wind tunnel test device for vehicle and bridge models comprises a vehicle model test component and a bridge model test component, wherein a gap is formed between the vehicle model test component and the bridge model test component.
In the invention, the height of the vertical fixing positions of the vehicle model testing assemblies on the cavity walls on the two sides of the laboratory is adjusted, so that a proper distance is kept between the vehicle model and the bridge model in the vertical direction. The aerodynamic force test of the vehicle models with different heights and widths and the beam section models with different beam heights can be completed by the test device. Therefore, the wind tunnel test device is suitable for various vehicle models and various bridge models, and has a wide application range.
The device provided by the invention has the advantages that the aerodynamic forces of the vehicle model and the bridge model can be simultaneously tested by adopting the arrangement mode that the vehicle model testing component for testing the aerodynamic force of the vehicle at the upper part and the lower bridge model aerodynamic force testing component are separated from each other. Compared with the existing test device which can only test a single structure of a vehicle model or a bridge model at the same time, the test device provided by the invention can greatly save the test time and improve the test efficiency.
In some embodiments, as shown in fig. 4, the vehicle model test assembly includes a plurality of parallel-arranged lateral slide rails 24 and a plurality of parallel-arranged longitudinal slide rails 22, the longitudinal slide rails 22 being slidably arranged along the lateral slide rails 24; preferably, the number of the plurality of transverse sliding rails 24 and the number of the plurality of longitudinal sliding rails 22 are two, the two transverse sliding rails 24 and the two longitudinal sliding rails 22 form a well frame shape, and both ends of the two transverse sliding rails 24 are fixed on the hole walls at both sides of the laboratory.
In some embodiments, as shown in FIG. 4, a longitudinal stiffener 25 is secured between two transverse rails 24 to increase the overall stiffness of the vehicle model test assembly.
In some embodiments, as shown in fig. 4, the longitudinal slide 22 and the transverse slide 24 are slidably connected by a transverse slider 23; specifically, the connecting parts of the longitudinal slide rail 22 and the transverse slide rail 24 are respectively provided with a transverse slide block 23, one end of the transverse slide block 23 is embedded into the transverse slide rail 24, the transverse slide block 23 is slidably connected with the transverse slide rail 24, and the other end of the transverse slide block 23 is fixed on the longitudinal slide rail 22, so that the longitudinal slide rail 22 can slide on the transverse slide rail 24.
In some embodiments, as shown in fig. 1 and 3, the vehicle model test assembly further comprises a plurality of vehicle load cells 20, the vehicle load cells 20 being slidably disposed along corresponding longitudinal slide rails 22, the vehicle load cells 20 being connected to the vehicle model 19 by a swivel connection 31;
specifically, the number of the vehicle load cells 20 is two, the longitudinal slide rail 22 is provided with a longitudinal slide block 21 in sliding fit with the longitudinal slide rail, and the lower end of the longitudinal slide block 21 is fixedly connected with the vehicle load cell 20; preferably, positioning screws are arranged between the longitudinal slide rail 22 and the longitudinal slide block 21 and between the transverse slide rail 24 and the transverse slide block 23, so that the vehicle model 19 after the moving position is fixed conveniently, and the longitudinal slide rail 24 and the transverse slide rail 23 are both precise linear chute rails, so that the vibration of the vehicle model in a test wind field can be greatly reduced, and the high-precision measurement of the aerodynamic force of the vehicle is ensured.
The test device can realize aerodynamic force tests of two vehicle models at different relative positions on a bridge, and can also realize synchronous tests of respective aerodynamic force three-component forces of the vehicle models and the bridge models under different relative incoming flow wind drift angles and wind attack angles. The test device can be directly placed in a laboratory with a water tank at the bottom and a wind tunnel at the upper part for wind-wave combined test. The testing device has multiple functions and reasonable design.
In some embodiments, as shown in fig. 1 and 2, the bridge model testing assembly is disposed below the vehicle model testing assembly, the bridge model testing assembly includes a bottom turntable 1, two slidable supports are disposed on the bottom turntable 1, the slidable supports are provided with outer turntables 8, the outer turntables 8 are provided with inner turntables 9 rotatable relative thereto, a support rod 11 is disposed between the two inner turntables 9, a beam section force measuring balance 16 is disposed on the support rod 11, and the beam section force measuring balance 16 is connected to the bridge model;
in some embodiments, as shown in fig. 5 and 6, the bottom turntable 1 is fixed on the laboratory bottom plate through the rotating shaft, a plurality of sliding grooves 27 are formed in the upper end face of the bottom turntable 1, the slidable support comprises a rectangular steel plate 5, a door-shaped steel connecting piece 6, a support base 4 and a vertical rod 7, the rectangular steel plate 5 and the bottom turntable 1 penetrate through the sliding grooves 27 through a bottom turntable bolt 3 to be connected, the door-shaped steel connecting piece 6 is welded on the rectangular steel plate 5, the support base 4 and the door-shaped steel connecting piece 6 are detachably connected through a support bolt 2, the vertical rod 7 is welded on the support base 4, and the upper portion of the vertical rod 7 is welded with the.
In some embodiments, as shown in fig. 5, the number of chutes 27 is 12, and the 12 chutes 27 are evenly distributed every 30 ° along the center of the bottom turntable 1.
In some embodiments, as shown in fig. 2 and 6, the outer turntable 8 is provided with two sections of arc chutes 26 which are oppositely arranged, and the inner turntable 9 passes through the arc chutes 26 through the upper turntable bolt 10 and is relatively rotatably connected with the outer turntable 8; preferably, a thin rubber pad is arranged between the outer turntable 8 and the inner turntable 9 to increase the friction force after the relative rotation of the two, and ensure that the relative positions of the outer turntable 8 and the inner turntable 9 can be reliably fixed by the upper turntable bolt 10.
In some embodiments, as shown in fig. 2 and 6, the bridge model includes a front compensation beam segment 12, a middle load beam segment 13, and a rear compensation beam segment 14, the compensation beam segment 12 and the rear compensation beam segment 14 are respectively fixedly connected to the support rod 11 through a pad 15, the two pad 15 are respectively connected to the corresponding front compensation beam segment 12 and the rear compensation beam segment 14 through bolts, the support rod 11 is fixedly connected to a beam segment load balance 16 through a beam segment balance lower backing plate 18, and the beam segment load balance 16 is detachably connected to the middle load beam segment 13 through a beam segment balance upper backing plate 17 through bolts.
In another embodiment, as shown in fig. 7, the vehicle model may be a single-trip train model, which includes a front train section 28, a middle train section 29 and a rear train section 30, wherein the middle train section 29 is connected to the vehicle load cell balance 20 through a rotary connector 31, and the front train section 28 and the rear train section 30 are connected to the longitudinal sliding block 21 through a rigid thin rod 32; at the moment, the front train section 28 and the rear train section 30 serve as aerodynamic transition sections and are used for weakening the influence of three-dimensional streaming and testing the aerodynamic force of the middle train section more accurately.
Before each test working condition is tested, the aerodynamic force of the rotary connecting piece connected with the vehicle in a vehicle-free state needs to be tested by a vehicle dynamometer balance, and the aerodynamic force of an individual vehicle model can be obtained by subtracting the aerodynamic force of the rotary connecting piece when the aerodynamic force test with the vehicle is formally started. Before the middle force-measuring beam section 13 is connected with the beam section balance upper backing plate 17, the beam section force-measuring balance 16 which is separately connected with the beam section balance upper backing plate 17 needs to be subjected to zero setting operation, and the aerodynamic force measured by the beam section force-measuring balance during the formal test is the independent aerodynamic force of the force-measuring beam section.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a vehicle and bridge model wind tunnel test device which characterized in that includes:
the vehicle model testing assembly comprises a plurality of parallel transverse slide rails (24) and a plurality of parallel longitudinal slide rails (22), and the longitudinal slide rails (22) are slidably arranged along the transverse slide rails (24); the vehicle model testing assembly further comprises a plurality of vehicle load cells (20), the vehicle load cells (20) are slidably arranged along the corresponding longitudinal slide rails (22), and the vehicle load cells (20) are connected with the vehicle model (19) through rotary connectors (31);
the bridge model testing assembly is arranged below the vehicle model testing assembly and comprises a bottom turntable (1), two slidable supports are arranged on the bottom turntable (1), an outer side turntable (8) is arranged on each slidable support, an inner side turntable (9) capable of rotating relative to the outer side turntable (8) is arranged on each outer side turntable (8), a supporting rod (11) is arranged between the two inner side turntables (9), a beam section force measuring balance (16) is arranged on each supporting rod (11), and the beam section force measuring balance (16) is connected with the bridge model;
and a gap is reserved between the vehicle model testing component and the bridge model testing component.
2. The vehicle and bridge model wind tunnel test device of claim 1, wherein: the number of the transverse sliding rails (24) and the number of the longitudinal sliding rails (22) are two, the transverse sliding rails (24) and the longitudinal sliding rails (22) form a well frame shape, and two ends of the transverse sliding rails (24) are fixed on the hole walls on two sides of the laboratory.
3. The vehicle and bridge model wind tunnel test device of claim 2, wherein: and a longitudinal stiffening rod (25) is fixedly arranged between the two transverse sliding rails (24) so as to increase the overall rigidity of the vehicle model test assembly.
4. The vehicle and bridge model wind tunnel test device of claim 2, wherein: the longitudinal slide rail (22) and the transverse slide rail (24) are connected in a sliding manner through a transverse slide block (23).
5. The vehicle and bridge model wind tunnel test device of claim 4, wherein: the number of the vehicle force measuring balances (20) is two, the longitudinal slide rail (22) is provided with a longitudinal slide block (21) in sliding fit with the longitudinal slide rail, and the lower end of the longitudinal slide block (21) is fixedly connected with the vehicle force measuring balances (20); and positioning screws are arranged between the longitudinal slide rail (22) and the longitudinal slide block (21) and between the transverse slide rail (24) and the transverse slide block (23).
6. The vehicle and bridge model wind tunnel test device of claim 1, wherein: bottom carousel (1) is fixed on the laboratory bottom plate through the pivot, a plurality of spouts (27) have been seted up to the up end of bottom carousel (1), slidable support includes rectangle steel sheet (5), door shape steel connecting piece (6), support base (4) and montant (7), rectangle steel sheet (5) with bottom carousel (1) passes through the bolt spout (27) slidable connection, door shape steel connecting piece (6) welding is in on rectangle steel sheet (5), support base (4) with door shape steel connecting piece (6) can dismantle the connection through the bolt, montant (7) welding is in on support base (4), montant (7) with outside carousel (8) fixed connection.
7. The wind tunnel test device for vehicle and bridge models according to claim 6, wherein: the number of the sliding grooves (27) is 12, and the 12 sliding grooves (27) are uniformly arranged along the center of the bottom turntable (1) at intervals of 30 degrees.
8. The vehicle and bridge model wind tunnel test device of claim 1, wherein: the outer side rotary table (8) is provided with two sections of arc-shaped sliding grooves (26) which are oppositely arranged, and the inner side rotary table (9) penetrates through the arc-shaped sliding grooves (26) through bolts and is connected with the outer side rotary table (8) in a relatively rotatable manner; a thin rubber pad is arranged between the outer side rotary table (8) and the inner side rotary table (9).
9. The vehicle and bridge model wind tunnel test device of claim 1, wherein: the bridge model comprises a front compensation beam section (12), a middle force-measuring beam section (13) and a rear compensation beam section (14), the compensation beam section (12) and the rear compensation beam section (14) are respectively connected with a support rod (11) through a cushion block (15) in a fixed mode, the support rod (11) is fixedly connected with a beam section force-measuring balance (16) through a beam section balance lower cushion plate (18), and the beam section force-measuring balance (16) is fixedly connected with the middle force-measuring beam section (13) through a beam section balance upper cushion plate (17).
10. The wind tunnel test device for vehicle and bridge models according to claim 5, wherein: the vehicle model can be a single-trip train model, the single-trip train model comprises a train front section (28), a train middle section (29) and a train rear section (30), wherein the train middle section (29) is connected with the vehicle force measuring balance (20) through a rotary connecting piece (31), and the train front section (28) and the train rear section (30) are connected with the longitudinal sliding block (21) through a rigid thin rod (32).
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| CN201911222169.0A CN110779675B (en) | 2019-12-03 | 2019-12-03 | Wind tunnel test device for vehicle and bridge model |
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| CN114383803A (en) * | 2022-03-22 | 2022-04-22 | 西南交通大学 | Wind tunnel test device for aerodynamic characteristics of pseudo-dynamic vehicle-bridge |
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