CN108645594A - A kind of wind tunnel test simplification car model for research of making an uproar for interior wind - Google Patents
A kind of wind tunnel test simplification car model for research of making an uproar for interior wind Download PDFInfo
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- CN108645594A CN108645594A CN201810809891.3A CN201810809891A CN108645594A CN 108645594 A CN108645594 A CN 108645594A CN 201810809891 A CN201810809891 A CN 201810809891A CN 108645594 A CN108645594 A CN 108645594A
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- offside door
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- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 238000011160 research Methods 0.000 title claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 47
- 239000004814 polyurethane Substances 0.000 claims abstract description 30
- 229920002635 polyurethane Polymers 0.000 claims abstract description 29
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 235000004443 Ricinus communis Nutrition 0.000 claims abstract description 11
- 240000000528 Ricinus communis Species 0.000 claims abstract description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 20
- 239000011496 polyurethane foam Substances 0.000 claims description 20
- 229920000742 Cotton Polymers 0.000 claims description 10
- 229920005549 butyl rubber Polymers 0.000 claims description 10
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000005094 computer simulation Methods 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Body Structure For Vehicles (AREA)
Abstract
A kind of to simplify car model category wind-tunnel technique field for the make an uproar wind tunnel test of research of interior wind, the left-hand mirror of left window assembly is fixed in the window I of offside door in car body through pedestal I, glass III through polyurethane pad III and instrument bezel III in the present invention；The skylight board of its widget is fixed in the window II of ceiling in car body；The glass I of preceding window assembly is fixed in the window IV of preceding face in car body through polyurethane pad I and instrument bezel I；Four hanging rings of hanging ring group are respectively and fixedly connected in car body four angles above ceiling；Four castors are fixed in the bottom plate quadrangle of car body；The right rear view mirror of right window assembly is fixed in the window III of offside door in car body through pedestal II, glass II through polyurethane pad II and instrument bezel II；Acoustics clad plate is adhered to car body inner face；The present invention can solve existing wind and make an uproar in experiment that real vehicle is complicated, moulding is determining and acoustics simulation modeling is difficult, is difficult to realize the problems such as optimizing of retrofiting.
Description
Technical field
The invention belongs to wind-tunnel technique fields, and in particular to a kind of wind tunnel test simplification car model.
Background technology
With the development of traffic and automotive engineering, speed is stepped up, and wind is made an uproar as the important finger of relationship riding comfort
Mark.Interior wind is made an uproar mainly by generations such as A columns and exterior mirrors, through the incoming vehicle such as glass for vehicle window and body panel and gap
It is interior.When carrying out wind tunnel test with real vehicle, since its is complicated, wind make an uproar propagation influence factor it is too many, be unfavorable for wind and make an uproar production
Raw and the mechanism of transmission the research.And real vehicle has complicated acoustics packaging, acoustics simulation modeling is difficult, is not easy to test
Card.Meanwhile the outer moulding etc. of real vehicle has determined, it is difficult to be optimized to A columns and rearview mirror and modification research.Therefore, urgently
A kind of car model device that convenient for disassembly and assembly, structure simplifies is needed, to solve these problems.
Invention content
The purpose of the present invention is to provide a kind of wind-tunnel examinations made an uproar for A columns, rearview mirror car wind and wind shake noise is studied
Simplified car model is tested, makes an uproar in experiment that real vehicle is complicated, moulding determines to solve existing wind, acoustics simulation modeling is difficult, difficult
The problems such as to realize remodeling optimization.
The present invention is by car body A, left window assembly B, skylight C, preceding window assembly D, hanging ring group E, casters group F, right window assembly G harmony
Learn clad plate H composition, wherein the left-hand mirror 21 of left window assembly B through pedestal I 22, glass III 18 through polyurethane pad III 20 and glass
Glass frame III 19 is fixed in the window I 10 of offside door 1 in car body A；The skylight board 17 of its widget C is fixed in the window of ceiling 3 in car body A
Mouth II 11；The glass I 15 of preceding window assembly D is fixed in the window IV of preceding face 7 in car body A through polyurethane pad I 16 and instrument bezel I 14
13；Four hanging rings of hanging ring group E are respectively and fixedly connected in car body A four angles above ceiling 3；Four castors of casters group F are distinguished
It is fixed in four angles below car body A bottom plates 5；The right rear view mirror 24 of right window assembly G is through pedestal II 23, glass II 27 through poly- ammonia
Ester gasket II 26 and instrument bezel II 25 are fixed in the window III 12 of offside door 6 in car body A；Acoustics clad plate H is adhered in car body A
The inner face of offside door 1, tail-gate 2, ceiling 3, bottom plate 5, offside door 6, preceding face 7 and skylight board 17.
The car body A is by 8 groups of offside door 1, tail-gate 2, ceiling 3, left A columns 4, bottom plate 5, offside door 6, preceding face 7 and right A columns
At material is 6061 aluminium alloys, and thickness 12mm, wherein the affixed strong magnet I 28 in left side of preceding face 7, the inner face of left column 4 is affixed strong
Magnet II 29；The affixed strong magnet III 30 in right side of preceding face 7, the affixed strong magnet of the inner face of right column 8 IV 31；Preceding face 7, offside door 1, tail
Door 2 and offside door 6 are ranked sequentially, and each side head and the tail are affixed, and each upper end and the surrounding of ceiling 3 are affixed, each lower end and bottom plate 5
Surrounding is affixed；Left A columns 4 are located at the junction of preceding face 7 and offside door 1, and the strong magnet I 25 through strong magnet II 26 and preceding face 7 is inhaled
It is attached；Right A columns 8 are located at the junction of preceding face 7 and offside door 6, and the strong magnet IV 28 through strong magnet III 27 and preceding face 7 adsorbs；Before
The angle α of face 7 and bottom plate 5 is 30 °, and offside door 1 and the angle β of offside door 6 and bottom plate 1 are 70 °；Ceiling 3 and 7 junction of preceding face
Equipped with the fillet that radius R is 200mm；Preceding face 7 is equipped with window IV 13, and offside door 1 is equipped with window I 10, and offside door 6 is equipped with
Window III 12, ceiling 3 are equipped with window II 11；2 lower section of tail-gate is equipped with hole 9.
The left window assembly B is by glass III 18, instrument bezel III 19, polyurethane pad III 20, left-hand mirror 21 and pedestal I
22, wherein instrument bezel III 19, polyurethane pad III 20 and glass III 18 is ranked sequentially from right-to-left, and pedestal I 22 is located at instrument bezel
III 19 front sides, left-hand mirror 21 are located at III 18 front side of glass；Skylight board 17 is thick 6061 aluminium alloy plates of 12mm in its widget C；Before
Window assembly D is made of glass I 15, polyurethane pad I 16 and instrument bezel I 14, glass I 15, polyurethane pad I 16 and instrument bezel I
14 are ranked sequentially from front to back；Right window assembly G is by pedestal II 23, right rear view mirror 24, instrument bezel II 25, II 26 and of polyurethane pad
Glass II 27, instrument bezel II 25, polyurethane pad II 26 and glass II 27 are ranked sequentially from left to right, and pedestal II 23 is located at glass
II 25 front side of frame, right rear view mirror 24 are located at II 27 front side of glass.
The casters group F includes 4 mutually isostructural castor assemblies, and castor assembly is by screw rod 32, screw sleeve 33, universal
Wheel 34, connecting plate 35 and bearing 36 form, and screw sleeve 33 and screw rod 32 are arranged above and below, and screw sleeve 33 is placed on screw rod 32, screw rod
32 are threadedly coupled with 33 inner face of screw sleeve；Universal wheel 34 is flexibly connected with 35 lower left corner of connecting plate, 35 right side of connecting plate and axis
It is affixed to hold 36 outer rims, screw sleeve 33 and 36 inner ring of bearing are affixed.
The acoustics clad plate H only shakes plate 39 and polyurethane foam by acoustical cotton 37, polyurethane foam I 38, butyl rubber
II 40 compositions, wherein acoustical cotton 37, polyurethane foam I 38, butyl rubber only shake plate 39, polyurethane foam II 40 is ranked sequentially and mutual
It is mutually bonded, the thickness of wherein acoustical cotton 37, polyurethane foam I 38 and polyurethane foam II 40 is respectively 20mm；Butyl rubber only shakes
The thickness of plate 39 is 4mm.
The course of work of the present invention is as follows：
Before wind tunnel test, model is hung on test chamber floor by hanging ring group with crane, and remove hanging ring group.
Model is moved into test section center by casters group, screw rod is turned downwards and model support is fixed on floor, and adjust vehicle
The body road clearance.Acoustic microphones are fixed at passenger's human ear position with tripod, and by wire harness passing-hole by acoustics
Signal wire leads to Noise Acquisition front end with power cord.Wind-tunnel blows to the test wind, and vehicle occupant is acquired with acoustic microphones
Wind at ear is made an uproar.In different operating modes, the rearview mirror of different shaping, the glass of A columns and different sound insulation attributes, research can be changed quickly
The Influencing Mechanism that vehicle configuration and glass attribute make an uproar to interior wind；Day widget or side window glass are dismantled, skylight or side window can be studied
Wind shake noise when unlatching.
The beneficial effects of the present invention are：
By designing a simplified car model, the moulding of vehicle body on passenger car is reappeared, for left and right rearview mirror, left and right A
Column wind, which makes an uproar to test, provides outer aerodynamics similar with real vehicle.Car body insulates against sound completely, and wind is made an uproar completely through the incoming car of glass, letter
Left and right rearview mirror is changed, the route of transmission that left and right A column wind is made an uproar, research wind is facilitated to make an uproar the mechanism of transmission；And model structure is simple, material
It is single, it is convenient for acoustics simulation modeling, mark is tested；Left and right rearview mirror, left and right A columns are convenient for disassembly and assembly, convenient for research left and right rearview mirror,
The Influencing Mechanism that the different shaping of left and right A columns makes an uproar to wind, to propose moulding prioritization scheme；Glass is convenient for disassembly and assembly, not convenient for research
Glass with physical attribute makes an uproar to wind the Influencing Mechanism of propagation；Skylight is convenient for disassembly and assembly with side window, convenient for the unlatching of research side window or day
Car wind shake noise when window is opened.
Description of the drawings
Fig. 1 be for interior wind make an uproar research wind tunnel test simplify car model structural schematic diagram
Fig. 2 is the structural schematic diagram (one) of car body A
Fig. 3 is the structural schematic diagram (two) of car body A
Fig. 4 is preceding window assembly D schematic diagrames
Fig. 5 is 17 schematic diagram of skylight board
Fig. 6 is left window assembly B schematic diagrames
Fig. 7 is right window assembly G schematic diagrames
Fig. 8 is front window angle schematic diagram
Fig. 9 is offside door angle schematic diagram
Figure 10 is left column and right column section view position view
Figure 11 is the scheme of installation of left column
Figure 12 is the scheme of installation of right column
Figure 13 is the structural schematic diagram of castor
Figure 14 is the position view of acoustics clad plate H
Figure 15 is the structural schematic diagram of acoustics clad plate H
Wherein：A. the right window assemblies of window assembly E. hanging ring group F. casters groups G. before the left window assembly C. skylights D. of car body B.
H. 8. right A columns 9. of face before 1. offside door of acoustics clad plate, 2. tail-gate, 3. ceiling, 4. left 5. bottom plate of A columns, 6. offside door 7.
I 16. polyurethane pad I of hole 10. window, I 11. window, II 12. window, III 13. window, IV 14. instrument bezel, I 15. glass
17. 22. pedestal of skylight board 18. glass, III 19. instrument bezel, III 20. polyurethane pad, III 21. left-hand mirror, I 23. pedestal
II 24. right rear view mirror, 25. instrument bezel, II 26. polyurethane pad, II 27. glass, II 28. strong magnet, I 29. strong magnet II
30. 36. bearing of strong magnet III 31. strong magnet, IV 32. screw rod, 33. screw sleeve, 34. universal wheel, 35. connecting plate, 37. sound-absorbing
38. polyurethane foam of cotton, I 39. butyl rubber only shakes 40. polyurethane foam II of plate
Specific implementation mode
Simplified model is described in detail below in conjunction with the accompanying drawings：
As shown in Figure 1, the present invention is by car body A, left window assembly B, skylight C, preceding window assembly D, hanging ring group E, casters group F, the right side
Window assembly G and acoustics clad plate H compositions, wherein the left-hand mirror 21 of left window assembly B through pedestal I 22, glass III 18 through polyurethane
Gasket III 20 and instrument bezel III 19 are fixed in the window I 10 of offside door 1 in car body A；The skylight board 17 of its widget C is fixed in car body
The window II 11 of ceiling 3 in A；The glass I 15 of preceding window assembly D is fixed in through polyurethane pad I 16 and instrument bezel I 14 in car body A
The window IV 13 of preceding face 7；Four hanging rings of hanging ring group E are respectively and fixedly connected in car body A four angles above ceiling 3；Casters group F's
Four castors are respectively and fixedly connected with four angles below car body A bottom plates 5；The right rear view mirror 24 of right window assembly G is through pedestal II 23, glass
Glass II 27 is fixed in the window III 12 of offside door 6 in car body A through polyurethane pad II 26 and instrument bezel II 25；Acoustics clad plate H
It is adhered to the inner face of offside door 1 in car body A, tail-gate 2, ceiling 3, bottom plate 5, offside door 6, preceding face 7 and skylight board 17.
As shown in Fig. 2, the car body A is by offside door 1, tail-gate 2, ceiling 3, left A columns 4, bottom plate 5, offside door 6, preceding face 7
Formed with right A columns 8, material is 6061 aluminium alloys, thickness 12mm, wherein before face 7 the affixed strong magnet I 28 in left side, left column 4
The affixed strong magnet of inner face II 29；The affixed strong magnet III 30 in right side of preceding face 7, the affixed strong magnet of the inner face of right column 8 IV 31；Preceding face 7,
Offside door 1, tail-gate 2 and offside door 6 are ranked sequentially, and each side head and the tail are affixed, and each upper end and the surrounding of ceiling 3 are affixed, under each
End is affixed with the surrounding of bottom plate 5；Left A columns 4 are located at the junction of preceding face 7 and offside door 1, and through strong magnet II 26 and preceding face 7
Strong magnet I 25 adsorbs；Right A columns 8 are located at the junction of preceding face 7 and offside door 6, and the strong magnet through strong magnet III 27 Yu preceding face 7
IV 28 absorption；The angle α of preceding face 7 and bottom plate 5 is 30 °, and offside door 1 and the angle β of offside door 6 and bottom plate 1 are 70 °；Ceiling 3 with
7 junction of preceding face is equipped with the fillet that radius R is 200mm；Preceding face 7 is equipped with window IV 13, and offside door 1 is equipped with window I 10, right
Side door 6 is equipped with window III 12, and ceiling 3 is equipped with window II 11；2 lower section of tail-gate is equipped with hole 9.
As shown in Figures 4 to 7, the left window assembly B is by glass III 18, instrument bezel III 19, polyurethane pad III 20, a left side
Rearview mirror 21 and pedestal I 22, wherein instrument bezel III 19, polyurethane pad III 20 and glass III 18 are ranked sequentially from right-to-left, base
Seat I 22 is located at III 19 front side of instrument bezel, and left-hand mirror 21 is located at III 18 front side of glass；Skylight board 17 is 12mm thick in its widget C
6061 aluminium alloy plates；Preceding window assembly D is made of glass I 15, polyurethane pad I 16 and instrument bezel I 14, glass I 15, urethane pad
Piece I 16 and instrument bezel I 14 are ranked sequentially from front to back；Right window assembly G is by pedestal II 23, right rear view mirror 24, instrument bezel II 25, poly-
Urethane gasket II 26 and glass II 27, instrument bezel II 25, polyurethane pad II 26 and glass II 27 are ranked sequentially from left to right, base
Seat II 23 is located at II 25 front side of instrument bezel, and right rear view mirror 24 is located at II 27 front side of glass.
As shown in figure 13, the casters group F includes 4 mutually isostructural castor assemblies, and castor assembly is by screw rod 32, spiral shell
Rod set 33, universal wheel 34, connecting plate 35 and bearing 36 form, and screw sleeve 33 and screw rod 32 are arranged above and below, and screw sleeve 33 is placed on
Screw rod 32, screw rod 32 are threadedly coupled with 33 inner face of screw sleeve；Universal wheel 34 is flexibly connected with 35 lower left corner of connecting plate, connecting plate 35
Right side and 36 outer rim of bearing are affixed, and screw sleeve 33 and 36 inner ring of bearing are affixed.
As shown in figure 15, the acoustics clad plate H only shakes 39 and of plate by acoustical cotton 37, polyurethane foam I 38, butyl rubber
Polyurethane foam II 40 forms, and wherein it is suitable only to shake plate 39, polyurethane foam II 40 for acoustical cotton 37, polyurethane foam I 38, butyl rubber
Sequence is arranged and is bonded mutually, and the thickness of wherein acoustical cotton 37, polyurethane foam I 38 and polyurethane foam II 40 is respectively 20mm；
Butyl rubber, which stops, shakes the thickness of plate 39 for 4mm.
Claims (5)
1. a kind of wind tunnel test simplification car model for research of making an uproar for interior wind, it is characterised in that：By car body (A), left window group
Part (B), skylight (C), preceding window assembly (D), hanging ring group (E), casters group (F), right window assembly (G) and acoustics clad plate (H) composition,
The left-hand mirror (21) of wherein left window assembly (B) is through pedestal I (22), glass III (18) through polyurethane pad III (20) and instrument bezel
III (19) are fixed in the window I (10) of offside door (1) in car body (A)；The skylight board (17) of its widget (C) is fixed in car body (A)
The window II (11) of middle ceiling (3)；The glass I (15) of preceding window assembly (D) is solid through polyurethane pad I (16) and instrument bezel I (14)
It is connected to the window IV (13) of preceding face (7) in car body (A)；Four hanging rings of hanging ring group (E) are respectively and fixedly connected with the ceiling in car body (A)
(3) four angles above；Four castors of casters group (F) are respectively and fixedly connected with four angles in car body (A) bottom plate (5) below；It is right
The right rear view mirror (24) of window assembly (G) is through pedestal II (23), glass II (27) through polyurethane pad II (26) and instrument bezel II
(25) it is fixed in the window III (12) of offside door (6) in car body (A)；Acoustics clad plate (H) is adhered to offside door in car body (A)
(1), the inner face of tail-gate (2), ceiling (3), bottom plate (5), offside door (6), preceding face (7) and skylight board (17).
2. the wind tunnel test simplification car model of research as described in claim 1 of making an uproar for interior wind, it is characterised in that：It is described
Car body (A) by offside door (1), tail-gate (2), ceiling (3), left A columns (4), bottom plate (5), offside door (6), preceding face (7) and right A
Column (8) forms, and material is 6061 aluminium alloys, thickness 12mm, wherein the affixed strong magnet I (28) in left side of preceding face (7), Zuo Zhu
(4) the affixed strong magnet II (29) of inner face；The affixed strong magnet III (30) in right side of preceding face (7), the affixed strong magnetic of inner face of right column (8)
Iron IV (31)；Preceding face (7), offside door (1), tail-gate (2) and offside door (6) are ranked sequentially, and each side affixed, each upper end of head and the tail
Affixed with the surrounding of ceiling (3), the surrounding of each lower end and bottom plate (5) is affixed；Left A columns (4) are located at preceding face (7) and offside door (1)
Junction, and the strong magnet I (25) through strong magnet II (26) and preceding face (7) adsorbs；Right A columns (8) are located at preceding face (7) and right side
The junction of door (6), and the strong magnet IV (28) through strong magnet III (27) and preceding face (7) adsorbs；Preceding face (7) and bottom plate (5)
Angle α is 30 °, and offside door (1) and the angle β of offside door (6) and bottom plate (1) are 70 °；Ceiling (3) is set with preceding face (7) junction
It is the fillet of 200mm to have radius R；Preceding face (7) is equipped with window IV (13), and offside door (1) is equipped with window I (10), offside door
(6) it is equipped with window III (12), ceiling (3) is equipped with window II (11)；It is equipped with hole (9) below tail-gate (2).
3. the wind tunnel test simplification car model of research as described in claim 1 of making an uproar for interior wind, it is characterised in that：It is described
Left window assembly (B) by glass III (18), instrument bezel III (19), polyurethane pad III (20), left-hand mirror (21) and pedestal I
(22), wherein instrument bezel III (19), polyurethane pad III (20) and glass III (18) are ranked sequentially from right-to-left, pedestal I (22)
On front side of instrument bezel III (19), left-hand mirror (21) is located on front side of glass III (18)；Skylight board (17) is in its widget (C)
12mm 6061 aluminium alloy plates of thickness；Preceding window assembly (D) is made of glass I (15), polyurethane pad I (16) and instrument bezel I (14), glass
Glass I (15), polyurethane pad I (16) and instrument bezel I (14) are ranked sequentially from front to back；Right window assembly (G) by pedestal II (23),
Right rear view mirror (24), instrument bezel II (25), polyurethane pad II (26) and glass II (27), instrument bezel II (25), urethane pad
Piece II (26) and glass II (27) are ranked sequentially from left to right, and pedestal II (23) is located on front side of instrument bezel II (25), right rear view mirror
(24) it is located on front side of glass II (27).
4. the wind tunnel test simplification car model of research as described in claim 1 of making an uproar for interior wind, it is characterised in that：It is described
Casters group (F) include 4 mutually isostructural castor assemblies, castor assembly is by screw rod (32), screw sleeve (33), universal wheel
(34), connecting plate (35) and bearing (36) composition, screw sleeve (33) and screw rod (32) are arranged above and below, and screw sleeve (33) is placed on spiral shell
Bar (32), screw rod (32) are threadedly coupled with screw sleeve (33) inner face；Universal wheel (34) is flexibly connected with connecting plate (35) lower left corner,
Connecting plate (35) right side and bearing (36) outer rim are affixed, and screw sleeve (33) and bearing (36) inner ring are affixed.
5. the wind tunnel test simplification car model of research as described in claim 1 of making an uproar for interior wind, it is characterised in that：It is described
Acoustics clad plate (H) plate (39) and polyurethane foam II is only shaken by acoustical cotton (37), polyurethane foam I (38), butyl rubber
(40) it forms, wherein acoustical cotton (37), polyurethane foam I (38), butyl rubber only shake plate (39), polyurethane foam II (40) sequence
It arranges and is bonded mutually, the thickness of wherein acoustical cotton (37), polyurethane foam I (38) and polyurethane foam II (40) is respectively
20mm；Butyl rubber, which stops, shakes the thickness of plate (39) for 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809891.3A CN108645594A (en) | 2018-07-23 | 2018-07-23 | A kind of wind tunnel test simplification car model for research of making an uproar for interior wind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809891.3A CN108645594A (en) | 2018-07-23 | 2018-07-23 | A kind of wind tunnel test simplification car model for research of making an uproar for interior wind |
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| Publication Number | Publication Date |
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| CN108645594A true CN108645594A (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809891.3A Pending CN108645594A (en) | 2018-07-23 | 2018-07-23 | A kind of wind tunnel test simplification car model for research of making an uproar for interior wind |
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| CN (1) | CN108645594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238746A (en) * | 2018-11-02 | 2019-01-18 | 上海海维斯特汽车设计有限公司 | A kind of soundproofed cabin and its test method suitable for automobile wind tunnel test |
| CN114280159A (en) * | 2021-12-24 | 2022-04-05 | 智己汽车科技有限公司 | Digital automobile acoustic part simulation method, system and equipment |
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