CN202938984U - Testing device for measuring wind resistance of model car - Google Patents
Testing device for measuring wind resistance of model car Download PDFInfo
- Publication number
- CN202938984U CN202938984U CN 201220633248 CN201220633248U CN202938984U CN 202938984 U CN202938984 U CN 202938984U CN 201220633248 CN201220633248 CN 201220633248 CN 201220633248 U CN201220633248 U CN 201220633248U CN 202938984 U CN202938984 U CN 202938984U
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- guide rod
- air
- leading portion
- car model
- air duct
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- Withdrawn - After Issue
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model discloses a testing device for measuring wind resistance of a model car. The testing device comprises an air duct, a guide rod and a dynamometer. The air duct comprises a front segment, a middle segment and a rear segment which are butted in sequence. An end wall of the front segment is provided with a first guide sleeve and a movable door, and a bottom of the front segment is provided with an air inlet. An end wall of the rear segment is provided with a second guide sleeve and an air outlet. Two ends of the guide rod are sleeved in the air duct through the first guide sleeve and the second guide sleeve. The guide rod in the middle segment is provided with a hook for fixing the model car. A traction end of the guide rod is connected with the dynamometer. The model car is blocked when encountering simulation wind, thrust generated by the simulation wind is transmitted to the guide rod, the guide rod is enabled to have axial movement to the rear segment, and wind resistance data of the model car are measured through the dynamometer connected with the traction end. The testing process is simple and convenient to operate, a wind tunnel test of tedious operation is replaced, and high-cost facilities and complex testing equipment and testing means of the wind tunnel test are prevented.
Description
Technical field
The utility model relates to the windage fields of measurement, relates in particular to a kind of proving installation of measuring car model windage size.
Background technology
For measuring car model suffered this problem of windage size in motion process, many scholars have proposed the method for each self-test windage to this.The main method that is used at present the test windage is wind-tunnel method.Wind-tunnel method is the method for a kind of simulated automotive suffered air resistance in motion process.Flow tunnel testing device mainly is comprised of several parts such as stable section, contraction section, test section and diffusers.Wind tunnel test facility Expenses Cost is large owing to building, and the testing tool that needs in test process is more, and present testing tool mainly contains: three-dimensional hot-wire anemometer, aerodynamic balance, sensor and data acquisition system (DAS) etc.In addition, the test process more complicated of wind-tunnel method is carried out a wind tunnel test consuming time longer, when a plurality of car models for the different surfaces shape carry out wind tunnel test, will take a long time, and causes testing efficiency lower.Due to the high in cost of production problem, wind-tunnel method is subject to very large restriction aspect the popularizing of present test windage.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of prior art, and the proving installation of quick, simple in structure, the cheap mensuration car model windage size of a kind of convenient test is provided.
The utility model is achieved through the following technical solutions:
A kind of proving installation of measuring car model windage size comprises air duct, guide rod, dynamometer, and this air duct comprises leading portion, stage casing and the back segment of docking successively; Be provided with the first orienting sleeve and dodge gate on the end wall of leading portion, this first orienting sleeve is arranged at the top of dodge gate, and the bottom of leading portion offers the air inlet that is connected with air intake blower fan; Be provided with the second orienting sleeve and air outlet on the end wall of back segment, the second orienting sleeve is arranged at the top of air outlet, and air outlet is connected with air-out blower fan; The two ends of guide rod are arranged in air duct by the first orienting sleeve and the second orienting sleeve; Be provided with the hook for the fixed car model on guide rod in the stage casing; The traction end of guide rod connects dynamometer.
The leading portion of described air duct, stage casing and back segment consist of by circular cylinder body; Described stage casing is transparent circular cylinder body.
Described stage casing is by being connected and the location between screw rod realization and leading portion and back segment.
Described dodge gate is connected with the end wall of leading portion by hinge.
A kind of method of testing of measuring car model windage size comprises the steps:
(1) open dodge gate, car model is fixed on hook, air intake blower fan is sent into extraneous air in the leading portion of air duct by air inlet, air-out blower fan by air outlet passes through the stage casing again, with the air intake back segment in leading portion, discharged by air-out blower fan, air flowed in air duct and formed simulation wind this moment again;
(2) being fixed on the windward side of linking up with the model of getting on the car runs into simulation wind and is obstructed, the thrust propelling vehicle model that simulation wind produces, the thrust that car model will be simulated again the wind generation passes to guide rod, guide rod is moved axially toward back segment along the wind direction of simulation wind, by the dynamometer that traction end connects, measure the windage data of car model.
The utility model has the following advantages compared with prior art:
In air duct, whole windage simple testing process is easy to operate by hook, guide rod and dynamometer car model, has substituted the wind tunnel test of complex structure, complex operation, on the one hand, has avoided carrying out wind tunnel test and needs to build spent expensive of wind-tunnel facility; On the other hand, testing apparatus and the means of testing of required complexity in the wind tunnel experiment process have been avoided.
The utility model is simple in structure, measuring accuracy is high, means of testing is simple and easy to do, it not only is applied to the windage test of car model, also can be widely used in the test of the windages such as spacecraft, boats and ships, for the progress, the development that promote the windage fields of measurement and popularize and made positive contribution.
Description of drawings
Fig. 1 is the structural representation that the utility model is measured the proving installation of car model windage size.
Fig. 2 is the leading portion side schematic view that the utility model is measured the proving installation of car model windage size.
Fig. 3 is the back segment side schematic view that the utility model is measured the proving installation of car model windage size.
Embodiment
Below in conjunction with specific embodiment, the utility model is done further concrete detailed description the in detail.
Embodiment
As Fig. 1～shown in Figure 3.The utility model is measured the proving installation of car model windage size, comprises air duct, guide rod 2, dynamometer (not shown), and this air duct comprises leading portion 1, stage casing 3 and the back segment 5 of docking successively; Be provided with the first orienting sleeve 9 and dodge gate 11 on the end wall of leading portion 1, this first orienting sleeve 9 is arranged at the top of dodge gate 11, and the bottom of leading portion 1 offers the air inlet 8 that is connected with the air intake blower fan (not shown); Be provided with the top that the second orienting sleeve 12 and air outlet 6, the second orienting sleeves 12 are arranged at air outlet 6 on the end wall of back segment 5, air outlet 6 is connected with the air-out blower fan (not shown); The two ends of guide rod 2 are arranged in air duct by the first orienting sleeve 9 and the second orienting sleeve 12; Be provided with the hook 4 for the fixed car model on guide rod 2 in stage casing 3; The traction end 2-1 of guide rod 2 connects dynamometer.
The leading portion 1 of described air duct, stage casing 3 and back segment 5 consist of by circular cylinder body.Transparent circular cylinder body is adopted in described stage casing 3, is convenient to the pose situation in stage casing 3 from the visual observation car model.
Described stage casing 3 by screw rod 7 realize with leading portion 1 and back segment 5 between be connected and the location.
Described dodge gate 11 is connected with the end wall of leading portion 1 by hinge 10.Dodge gate 11 is convenient to putting into and changing of model automobile.
A kind of method of testing of measuring car model windage size comprises the steps:
(1) open dodge gate 11, car model is fixed on hook 4, air intake blower fan is sent into extraneous air in the leading portion 1 of air duct by air inlet 8, air-out blower fan by air outlet 6 passes through stage casing 3 again, with the air intake back segment 5 in leading portion 1, discharged by air-out blower fan, air flowed in air duct and formed simulation wind this moment again;
(2) be fixed on hook 4 windward sides of getting on the car model and run into simulation wind and being obstructed, the thrust propelling vehicle model that simulation wind produces, the thrust that car model will be simulated again the wind generation passes to guide rod 2, guide rod 2 is moved axially toward back segment 5 along the wind direction of simulation wind, by the dynamometer that traction end connects, measure the windage data of car model.
In order to reduce the test error of car model windage as far as possible, for the same car model, but follow-on test average for 3 times, and with its data as the suffered windage of car model of the type.
Just can realize preferably the utility model as mentioned above.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (5)
1. a proving installation of measuring car model windage size, is characterized in that, comprises air duct, guide rod, dynamometer, and this air duct comprises leading portion, stage casing and the back segment of docking successively; Be provided with the first orienting sleeve and dodge gate on the end wall of leading portion, this first orienting sleeve is arranged at the top of dodge gate, and the bottom of leading portion offers the air inlet that is connected with air intake blower fan; Be provided with the second orienting sleeve and air outlet on the end wall of back segment, the second orienting sleeve is arranged at the top of air outlet, and air outlet is connected with air-out blower fan; The two ends of guide rod are arranged in air duct by the first orienting sleeve and the second orienting sleeve; Be provided with the hook for the fixed car model on guide rod in the stage casing; The traction end of guide rod connects dynamometer.
2. the proving installation of mensuration car model windage size according to claim 1, is characterized in that, the leading portion of described air duct, stage casing and back segment consist of by circular cylinder body.
3. the proving installation of mensuration car model windage size according to claim 1, is characterized in that, described stage casing is transparent circular cylinder body.
4. the proving installation of mensuration car model windage size according to claim 2, is characterized in that, described stage casing is by being connected and the location between screw rod realization and leading portion and back segment.
5. the proving installation of the described mensuration car model of any one windage size according to claim 2～4, is characterized in that, described dodge gate is connected with the end wall of leading portion by hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633248 CN202938984U (en) | 2012-11-26 | 2012-11-26 | Testing device for measuring wind resistance of model car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633248 CN202938984U (en) | 2012-11-26 | 2012-11-26 | Testing device for measuring wind resistance of model car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202938984U true CN202938984U (en) | 2013-05-15 |
Family
ID=48323217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220633248 Withdrawn - After Issue CN202938984U (en) | 2012-11-26 | 2012-11-26 | Testing device for measuring wind resistance of model car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202938984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018002A (en) * | 2012-11-26 | 2013-04-03 | 华南理工大学 | Testing device and method for measuring wind drag of automobile model |
-
2012
- 2012-11-26 CN CN 201220633248 patent/CN202938984U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018002A (en) * | 2012-11-26 | 2013-04-03 | 华南理工大学 | Testing device and method for measuring wind drag of automobile model |
| CN103018002B (en) * | 2012-11-26 | 2015-03-11 | 华南理工大学 | Testing device and method for measuring wind drag of automobile model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |