Automobile wind tunnel model

Abstract

The utility model relates to an automobile wind tunnel model, and the model comprises a first frame which is a long member; the second frame is arranged on one side of the first frame; the number of the third frames is two, and the two third frames are arranged on the two opposite sides of the first frame in a protruding mode correspondingly. Along the length direction of the first frame, the extension range of the third frame on the first frame is within the extension range of the second frame on the first frame. According to the automobile wind tunnel model provided by the embodiment of the invention, the second frame and the first frame jointly form the appearance structure of the automobile, the two third frames are arranged on the outer side of the second frame, and the third frames protrude out of the second frame to form an outward protruding structure, so that the attachment area of oil sludge is increased, and the service life of the automobile is prolonged. And an adhesion surface which is not parallel to the airflow direction is also generated, so that the adhesion strength of the oil sludge on the periphery of the model can be obviously improved, the adhesion strength of the oil sludge in a high-speed airflow environment can be effectively improved when a test is carried out in a wind tunnel, the oil sludge is prevented from falling off, and the test is carried out more smoothly.

Description

Technical Field

[0001] The present application relates to the technical field of automobile wind tunnel models, and in particular to an automobile wind tunnel model. Background Art

[0002] In the field of automobile manufacturing, in order to simulate the flow state of the surrounding air during the driving of mass-produced cars and measure the effect of airflow on the car, it is usually necessary to set up a car wind tunnel model for simulation. The car wind tunnel model is placed in the wind tunnel to verify various data. Currently, common car wind tunnel models include Figure 1 As shown, it includes a base frame 1-1, a top frame 1-2 is set on the top of the base frame 1-1, the two sides of the top frame 1-2 are flush with the two sides of the base frame 1-1, and slopes are set between the two ends of the top frame 1-2 and the two ends of the base frame 1-1 to simulate the appearance of the car, and then a sealing plate is set on the outside of the top frame 1-2 and the base frame 1-1, and oil mud is applied on the outside of the sealing plate to be closer to the appearance of the car body, and then the model is placed in a wind tunnel for data verification. However, it is found in actual application that due to the high air flow velocity in the wind tunnel during the wind tunnel test, the adhesion strength of the oil mud on the sealing plate will be affected by the force of the air flow, and some of the oil mud will easily fall off, affecting the normal progress of the wind tunnel test. Utility Model Content

[0003] The purpose of this application is to provide an automobile wind tunnel model. After the outer surface of the automobile wind tunnel model is coated with oil mud, the adhesion of the oil mud is stronger, the adhesion strength of the oil mud in a high-speed airflow environment is improved, and the oil mud is prevented from falling off, thereby effectively solving the shortcomings of the existing technology.

[0004] To this end, an embodiment of the present application provides an automobile wind tunnel model, characterized by comprising:

[0005] The first frame is an elongated member, the length of which corresponds to the length of the vehicle body;

[0006] A second frame is provided on one side of the first frame, wherein the side of the first frame where the second frame is located corresponds to the top side in the height direction of the vehicle body;

[0007] There are two third frames, each of which is protruding from two opposite sides of the first frame, and the two opposite sides correspond to two sides in the width direction of the vehicle body;

[0008] Wherein, along the length direction of the first frame, the extension range of the third frame on the first frame is within the extension range of the second frame on the first frame.

[0009] In some possible implementations, the first frame includes a first section and a second section that are connected to each other, the first section corresponds to the front of the vehicle body, and the height of the first section is lower than the height of the second section.

[0010] In some possible implementations, a step is protruding from a top of the first section on one side close to the second section, and the height of the step is lower than the height of the second section.

[0011] In some possible implementations, the second frame includes a straight section, a first slope section, and a second slope section, and the first slope section and the second slope section are respectively connected to the two ends of the straight section so that slopes are formed at both ends of the second frame, and the first slope section extends to the end of the second section, and the second slope section extends to the other end of the second section, and the height of the first slope section at its lowest height is higher than the height of the step.

[0012] In some possible implementations, one end of the third frame extends to the lowest height of the first slope section, and the other end of the third frame extends to the straight section.

[0013] In some possible implementations, the second section encloses a rectangular space, the third frame encloses a rectangular space, and one side of the third frame is attached to one side of the second section.

[0014] In some possible implementations, both sides of the third frame in the height direction are aligned with both sides of the second section in the height direction.

[0015] In some possible implementations, the height of the third frame protruding from the second section is not less than 1 / 4 of the height of the third frame.

[0016] In some possible implementations, the bottom of the second section at one end away from the first section is recessed upward.

[0017] In some possible implementations, a plurality of connection blocks are provided on the first frame, the second frame, and the third frame to facilitate setting a sealing plate.

[0018] According to the automobile wind tunnel model provided in the embodiment of the present application, the second frame is located on the top of the first frame, and the two together constitute the vehicle's external structure. The two third frames are respectively arranged on the outside of the second frame, and the third frames protrude outward from the second frame to form an outwardly convex structure, which increases the adhesion area of ​​the sludge and also produces an adhesion surface that is not parallel to the airflow direction, which can significantly improve the adhesion strength of the sludge on the periphery of the model. When conducting tests in the wind tunnel, the adhesion strength of the sludge in a high-speed airflow environment can be effectively improved, thereby preventing the sludge from falling off and making the test smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of an automobile wind tunnel model in the prior art;

[0020] Figure 2A schematic structural diagram of an automobile wind tunnel model provided in an embodiment of the present application;

[0021] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0022] Figure 4 A schematic structural diagram of the automobile wind tunnel model provided in an embodiment of the present application from another perspective;

[0023] Figure 5 A top view of the automobile wind tunnel model provided in an embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the structure of the automobile wind tunnel model provided in an embodiment of the present application after a sealing plate is partially set on the outer surface. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] like Figure 2-Figure 6 As shown, the embodiment of the present application provides an automobile wind tunnel model, which is applied to the field of automobile manufacturing. During the automobile manufacturing process, in order to simulate the distribution state of the surrounding airflow during the driving of mass-produced cars and obtain relevant data, manufacturers usually set up automobile wind tunnel models for wind tunnel tests to verify various data. Currently, the more common automobile wind tunnel models usually include two frames arranged upper and lower, which roughly form the shape of the car, and sealing plates are set on the outside of the two frames. Then, oil mud is applied on the outside of the sealing plates. By applying the oil mud, the shape of the model is more similar to the shape of a mass-produced car. However, it is found in practice that when the model coated with oil mud is sent into the wind tunnel for testing, due to the high air flow velocity in the wind tunnel, it has a strong force on the oil mud, which affects the adhesion strength of the oil mud on the sealing plate, causing part of the oil mud to fall off, thereby affecting the generation of various data. The automobile wind tunnel model of the present application is intended to improve the adhesion strength of the oil mud on the model and ensure the normal generation of various test data.

[0027] The automobile wind tunnel model includes a first frame 11, a second frame 12 and a third frame 13. The first frame 11 is an elongated member. The length direction of the first frame 11 corresponds to the length direction of the vehicle body. The second frame 12 is arranged on one side of the first frame 11. The side of the first frame 11 where the second frame 12 is located corresponds to the top side in the height direction of the vehicle body. In other words, when the first frame 11 is upright, the length direction of the first frame 11 is the front-to-back length direction of the vehicle body. The second frame 12 is arranged on the top of the first frame 11. The first frame 11 and the second frame 12 cooperate to roughly form the shape of the vehicle body. There are two third frames 13. The two third frames 13 are respectively protruded on the opposite sides of the first frame 11. The opposite sides correspond to the two sides in the width direction of the vehicle body, that is, the length direction of the first frame 11 is the front-to-back length direction of the vehicle body, the up and down directions of the first frame 11 correspond to the height direction of the vehicle body, and the left side of the first frame 11 The right direction corresponds to the left and right directions of the vehicle body, and the left and right directions and the front and rear directions are all horizontal directions. The third frame 13 is arranged on the left and right sides of the first frame 11, and the third frame 13 protrudes outward from the side of the first frame 11 to form an outward convex structure. In this way, the outer shape of the first frame 11, the second frame 12 and the third frame 13 is attached to the outside of the three parts to cover the sealing plate 400, and then oil mud is applied on the outside of the sealing plate 400 to increase the contact area between the oil mud and the sealing plate 400. Moreover, the setting of the outward convex structure also produces a contact surface that is not parallel to the left and right outer sides of the first frame 11, that is, an outer contact surface between the outer side of the first frame 11 and the outer side of the third frame 13. Under the action of airflow, at the contact surface facing the airflow, an extrusion force is generated between the oil mud and the contact surface, which can effectively improve the adhesion strength between the oil mud and the sealing plate 400, thereby effectively avoiding the phenomenon of oil mud falling off, so that the test can proceed smoothly.

[0028] In this embodiment, along the length direction of the first frame 11, the extension range of the third frame 13 on the first frame 11 is within the extension range of the second frame 12 on the first frame 11, that is, in the vertical projection, along the length direction of the first frame 11, the length range of the third frame 13 is within the length direction of the second frame 12, so that the front end and the rear end of the third frame 13 are misaligned with the second frame 12, which is beneficial to improving the adhesion strength of the oil sludge.

[0029] In this embodiment, the adhesion strength between the sludge and the sealing plate 400 is improved by increasing the adhesion area and generating the dislocation structure.

[0030] Preferably, the first frame 11 as a whole encloses a rectangular space, and the first frame 11 includes a first section 1101 and a second section 1102. The first section 1101 and the second section 1102 are connected to each other, and the first section 1101 and the second section 1102 both have a certain length along the direction of the vehicle body. The first section 1101 corresponds to the front position of the vehicle body, and the first section 1101 is connected to the front end of the second section 1102. In the following, the direction of the front end is taken as the front, the direction opposite to the front is taken as the rear, the direction corresponding to the top of the vehicle body is taken as the top, the direction opposite to the top is taken as the bottom, and the left and right directions of the vehicle body are taken as the left and right directions.

[0031] The first section 1101 and the second section 1102 are both enclosed to form a rectangular space, and the top height of the first section 1101 is lower than the top height of the second section 1102. In this embodiment, the connection between the first section 1101 and the second section 1102 forms a staggered structure, and the top of the first section 1101 at the front is lower. After the sludge is applied, on the one hand, the adhesion area of ​​the sludge is increased, and on the other hand, the generation of the staggered structure causes the joint surface between the sludge and the sealing plate 400 to bend, and the area faces the airflow, which is conducive to improving the adhesion strength between the sludge and the sealing plate 400.

[0032] It should be noted that when conducting wind tunnel tests, for the sludge on the left and right sides and top side of the vehicle body, the airflow flows along the outer surface of the sludge, and the bonding surface between the sludge and the sealing plate 400 is also roughly perpendicular to the direction of airflow. In this way, it is easy to generate friction force on the sludge, which is not conducive to the high-strength adhesion of the sludge. The setting of the third frame 13 and the uneven setting of the first section 1101 and the second section 1102 cause the bonding surface between the sludge and the sealing plate 400 to be dislocated and turned. At the position facing the airflow, under the action of the airflow, the sludge at the dislocated position is pressed against the bonding surface, thereby achieving the effect of improving the adhesion strength of the sludge.

[0033] More preferably, a step 200 is protruding from the top of the first section 1101 on one side close to the second section 1102, and the height of the step 200 is lower than the height of the second section 1102. In this way, the windward part forms multiple continuous staggered structures, which is more conducive to improving the adhesion strength of the oil sludge.

[0034] In one embodiment, the second frame 12 includes a straight section 1203, a first slope section 1201 and a second slope section 1202. The straight section 1203 encloses a rectangular space. The first slope section 1201 and the second slope section 1202 are respectively connected to the front and rear ends of the straight section 1203. The first slope section 1201 is connected to the front end of the straight section 1203, and the rear end of the first slope section 1201 is the same height as the straight section 1203. The second slope section 1202 is connected to the rear end of the straight section 1203, and the front end height of the second slope section 1202 is the same as the height of the straight section 1203. The heights are the same, the front end of the first slope section 1201 is lower than the height of the straight section 1203, and the rear end of the second slope section 1202 is lower than the height of the straight section 1203. In this way, slopes are formed at the front and rear ends of the second frame 12 to form the shape of the vehicle body and roof. The front end of the first slope section 1201 extends to the front end of the second section 1102, and the rear end of the second slope section 1202 extends to the rear end of the second section 1102. The lowest point of the first slope section 1201 is higher than the height of the step 200, so that a staggered structure is formed at the windward side, which is beneficial to improving the adhesion strength of the oil mud.

[0035] In some embodiments, one end of the third frame 13 extends to the lowest height of the first slope section 1201, and the other end of the third frame 13 extends to the straight section 1203 area, that is, the misaligned position between the front end of the third frame 13 and the second frame 12 corresponds to the front end of the first slope section 1201, and the misaligned position between the rear end of the third frame 13 and the second frame 12 corresponds to the middle of the straight section 1203. In this way, for the oil sludge as a whole, along the front-to-back direction, the misalignment of the rear end of the third frame 13 corresponds to the straight section 1203 with a regular shape, which to a certain extent compensates for the relatively weak adhesion strength of the oil sludge at the straight section 1203.

[0036] Preferably, the second section 1102 and the third frame 13 are both enclosed into a rectangular space, and one side of the third frame 13 is attached to the outer side of the second section 1102, so that the contact surface between the outer side of the third frame 13 and the outer side of the second section 1102 is perpendicular to the direction of airflow. This is more conducive to improving the adhesion strength of the oil sludge in the windward direction.

[0037] The two sides of the third frame 13 in the height direction are aligned with the two sides of the second section 1102 in the height direction, that is, the top of the third frame 13 is flush with the top of the second section 1102, and the bottom of the third frame 13 is flush with the bottom of the second section 1102. More preferably, the height of the third frame 13 protruding from the second section 1102 is not less than 1 / 4 of the height of the third frame 13, that is, corresponding to the overall height of the third frame 13, the height of the third frame 13 protruding outward should be large enough so that the contact surface perpendicular to the flow direction of the airflow has sufficient width, which is conducive to improving the adhesion strength of the oil sludge.

[0038] In one example, the bottom of the second section 1102 at one end away from the first section 1101 is recessed upward, that is, the bottom of the rear end of the second section 1102 is recessed upward to form a staggered structure at the tail, further enhancing the bonding strength between the sludge and the sealing plate 400.

[0039] It should be noted that the outer sides of the first frame 11, the second frame 12 and the third frame 13 are first covered with a sealing plate 400. The outer shape of the sealing plate 400 after covering is the same as the outer shape of the first frame 11, the second frame 12 and the third frame 13. Then, oil mud is applied to the outer side of the sealing plate 400. The outer shape structure of the first frame 11, the second frame 12 and the third frame 13 reflects the shape of the oil mud coating contact surface.

[0040] More preferably, a plurality of connecting blocks 300 are provided on the first frame 11, the second frame 12 and the third frame 13, and the installation of the sealing plate 400 is facilitated by the connecting blocks 300. The connecting blocks 300 can be set on the first frame 11, the second frame 12 and the third frame 13 by welding, adhesive adhesion, etc., and threaded holes can be provided on the connecting blocks 300 to facilitate the connection of the sealing plate 400 with the connecting blocks 300 by screws.

[0041] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0042] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0043] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An automobile wind tunnel model, characterized in that: include: The first frame is an elongated member, the length of which corresponds to the length of the vehicle body; A second frame is provided on one side of the first frame, wherein the side of the first frame where the second frame is located corresponds to the top side in the height direction of the vehicle body; There are two third frames, each of which is protruding from two opposite sides of the first frame, and the two opposite sides correspond to two sides in the width direction of the vehicle body; Wherein, along the length direction of the first frame, the extension range of the third frame on the first frame is within the extension range of the second frame on the first frame.

2. The automobile wind tunnel model according to claim 1, characterized in that: The first frame includes a first section and a second section connected to each other, the first section corresponds to the front of the vehicle body, and the height of the first section is lower than the height of the second section.

3. The automobile wind tunnel model according to claim 2, characterized in that: A step is protruding from one side of the top of the first section close to the second section, and the height of the step is lower than that of the second section.

4. The automobile wind tunnel model according to claim 3, characterized in that: The second frame includes a straight section, a first slope section and a second slope section, the first slope section and the second slope section are respectively connected to the two ends of the straight section so that slopes are formed at both ends of the second frame, and the first slope section extends to the end of the second section, and the second slope section extends to the other end of the second section, and the height of the lowest height of the first slope section is higher than the height of the step.

5. The automobile wind tunnel model according to claim 4, characterized in that: One end of the third frame extends to the lowest height of the first slope section, and the other end of the third frame extends to the straight section.

6. The automobile wind tunnel model according to claim 2, characterized in that: The second section encloses a rectangular space, the third frame encloses a rectangular space, and one side of the third frame is attached to one side of the second section.

7. The automobile wind tunnel model according to claim 6, characterized in that: Both sides of the third frame in the height direction are aligned with both sides of the second section in the height direction.

8. The automobile wind tunnel model according to claim 6, characterized in that: The height of the third frame protruding from the second section is not less than 1 / 4 of the height of the third frame.

9. The automobile wind tunnel model according to claim 2, characterized in that: The bottom of the second section at one end away from the first section is recessed upward.

10. The automobile wind tunnel model according to claim 1, characterized in that: The first frame, the second frame and the third frame are each provided with a plurality of connecting blocks for setting a sealing plate.

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