Test device

Abstract

The utility model discloses a test device which is used for fixing a scale model in a wind tunnel test and comprises a first transverse rod and a second transverse rod which extend along a first direction and are spaced along a second direction; the first longitudinal rod and the second longitudinal rod extend in the second direction and are spaced in the first direction, the two ends, in the length direction, of the first longitudinal rod are connected with the first transverse rod and the second transverse rod correspondingly, and the two ends, in the length direction, of the second longitudinal rod are connected with the first transverse rod and the second transverse rod correspondingly; the first direction is perpendicular to the second direction and parallel to the horizontal plane; the positions of the first longitudinal rod and the second longitudinal rod on the first transverse rod and the second transverse rod are adjustable in the first direction, the lengths of the first longitudinal rod and the second longitudinal rod are adjustable in the second direction, and the scale model is suitable for being arranged on the first longitudinal rod and the second longitudinal rod. The test device provided by the utility model is convenient to adjust, wide in adjusting range, simple in structure and high in precision.

Description

TECHNICAL FIELD

[0001] The utility model relates to test technical field especially is related to a test device. BACKGROUND

[0002] In the related art, the test device used for vehicle wind tunnel test in the whole vehicle wind tunnel can only carry out 1:1 real vehicle / model test, and the cost is high. If the scaled model test is carried out in the whole vehicle wind tunnel, the axle wheel pitch adjustment range of the skirt restraint system also needs to be reduced in proportion due to the reduction of the whole vehicle model. The existing test device cannot realize such small adjustment range and cannot be directly used in the whole vehicle wind tunnel. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a test device, which is simple in structure, can adapt to the change of the installation position of different size scaled models, and is convenient to adjust.

[0004] The test device according to the utility model embodiment is used for fixing the scaled model in the wind tunnel test and comprises: a first transverse rod and a second transverse rod, the first transverse rod and the second transverse rod extend along a first direction and are spaced apart along a second direction; a first longitudinal rod and a second longitudinal rod, the first longitudinal rod and the second longitudinal rod extend along the second direction and are spaced apart along the first direction, two ends of the first longitudinal rod in the length direction are connected with the first transverse rod and the second transverse rod respectively, two ends of the second longitudinal rod in the length direction are connected with the first transverse rod and the second transverse rod respectively, the first direction and the second direction are perpendicular and parallel to the horizontal plane; the positions of the first longitudinal rod and the second longitudinal rod along the first direction on the first transverse rod and the second transverse rod are adjustable, the lengths of the first longitudinal rod and the second longitudinal rod along the second direction are adjustable, and the scaled model is adapted to be arranged on the first longitudinal rod and the second longitudinal rod.

[0005] The test device according to the utility model embodiment is used for fixing the scaled model in the wind tunnel test and comprises: a first transverse rod and a second transverse rod, the first transverse rod and the second transverse rod extend along a first direction and are spaced apart along a second direction; a first longitudinal rod and a second longitudinal rod, the first longitudinal rod and the second longitudinal rod extend along the second direction and are spaced apart along the first direction, two ends of the first longitudinal rod in the length direction are connected with the first transverse rod and the second transverse rod respectively, two ends of the second longitudinal rod in the length direction are connected with the first transverse rod and the second transverse rod respectively, the first direction and the second direction are perpendicular and parallel to the horizontal plane; the positions of the first longitudinal rod and the second longitudinal rod along the first direction on the first transverse rod and the second transverse rod are adjustable, the lengths of the first longitudinal rod and the second longitudinal rod along the second direction are adjustable, and the scaled model is adapted to be arranged on the first longitudinal rod and the second longitudinal rod.

[0006] According to some embodiments of the present application, the two ends of the first longitudinal rod in the length direction are movably arranged on the first transverse rod and the second transverse rod respectively; and the two ends of the second longitudinal rod in the length direction are movably arranged on the first transverse rod and the second transverse rod respectively.

[0007] In some embodiments of the present application, the test device comprises a first connecting member and a second connecting member, the first longitudinal rod, the first transverse rod and the second transverse rod are connected by the first connecting member respectively, the first connecting member is provided with a first T-shaped bolt on one side along the second direction, the first connecting member is provided with a second T-shaped bolt on one side along the first direction, the second longitudinal rod, the first transverse rod and the second transverse rod are connected by the second connecting member respectively, the second connecting member is provided with a third T-shaped bolt on one side along the second direction, the second connecting member is provided with a fourth T-shaped bolt on one side along the first direction, one side of the first transverse rod and the second transverse rod facing each other is provided with a first T-shaped groove matched with the first T-shaped bolt and the third T-shaped bolt, the two ends of the first longitudinal rod in the length direction are respectively provided with a second T-shaped groove matched with the second T-shaped bolt, and the two ends of the second longitudinal rod in the length direction are respectively provided with a third T-shaped groove matched with the fourth T-shaped bolt.

[0008] According to some embodiments of the present application, the first longitudinal rod and the second longitudinal rod both comprise a connecting rod extending along the second direction, and a slide rod extending along the second direction, the two ends of the connecting rod in the length direction are both provided with the slide rod, and the slide rod is movably connected with the connecting rod along the second direction, for adjusting the length of the first longitudinal rod and the second longitudinal rod along the second direction.

[0009] In some embodiments of the present application, one end of each of the two slide rods away from each other is connected with an end rod, and the two end rods are connected with the first transverse rod and the second transverse rod respectively.

[0010] In some embodiments of the present application, a fifth T-shaped bolt is arranged on the scaled model, and the upper surface of at least one of the end rod and the slide rod is provided with a fourth T-shaped groove matched with the fifth T-shaped bolt.

[0011] According to some embodiments of the present application, further comprising a connecting assembly arranged on the lower surface of the first transverse rod and the lower surface of the second transverse rod, for fixing the test device on a wind tunnel balance measurement platform.

[0012] In some embodiments of the utility model, the connecting assembly includes: connecting shaft, the lower end of connecting shaft is used for connecting with the wind tunnel balance measurement platform, support, the lower end of support is rotationally connected with the upper end of connecting shaft and the rotation axis extends along the first direction, the upper end of support is connected with the first transverse rod or the second transverse rod.

[0013] In some embodiments of the utility model, the upper end of connecting shaft has first connecting part and second connecting part, first connecting part and second connecting part are spaced apart in the first direction and define mounting groove, first connecting part and second connecting part have first mounting hole which penetrates in the first direction, the lower end of support has groove connecting plate, at least part of groove connecting plate is located in the mounting groove and has second mounting hole which penetrates along the first direction, the test device further includes: pin shaft, pin shaft is arranged in first mounting hole and second mounting hole.

[0014] In some embodiments of the utility model, the upper end of support has transverse rod connecting plate, and the first transverse rod or the second transverse rod is connected by fastener;And / or, the lower end of connecting shaft has bolt part, which is used for connecting with the wind tunnel balance measurement platform.

[0015] The additional aspects and advantages of the utility model will be partly given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0017] Figure 1 It is the perspective view of test device according to the utility model embodiments;

[0018] Figure 2 It is the partial enlarged view of test device according to the utility model embodiments, wherein one side wall of first connecting piece is hiddenly arranged;

[0019] Figure 3 It is the perspective view of first transverse rod of test device according to the utility model embodiments;

[0020] Figure 4 It is the perspective view of second transverse rod of test device according to the utility model embodiments;

[0021] Figure 5 It is the perspective view of first longitudinal rod or second longitudinal rod of test device according to the utility model embodiments;

[0022] Figure 6 is a perspective view of a connecting shaft of the test device according to an embodiment of the present application;

[0023] Figure 7 is a perspective view of a support of the test device according to an embodiment of the present application.

[0024] Reference signs:

[0025] 100, test device;

[0026] 1, first transverse rod; 11, first T-shaped groove;

[0027] 2, second transverse rod;

[0028] 3, first longitudinal rod; 31, second T-shaped groove; 32, connecting rod; 33, sliding rod; 34, end rod;

[0029] 4, second longitudinal rod; 41, third T-shaped groove;

[0030] 5, first connecting piece; 51, first T-shaped bolt; 52, second T-shaped bolt;

[0031] 6, second connecting piece;

[0032] 7, connecting assembly; 71, connecting shaft; 711, first connecting part; 712, second connecting part; 713, bolt part; 714, first mounting hole; 715, mounting groove; 72, support; 721, groove connecting plate; 722, second mounting hole; 723, transverse rod connecting plate; 724, connecting hole. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0035] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] Reference will be made below Figures 1-7 The test device 100 according to the embodiment of the utility model is described. The test device 100 is mainly used for carrying out automobile scale model aerodynamics test in the whole vehicle wind tunnel, of course, it can also be used for the occasion of carrying out high-speed rail model, flying car / vehicle and sports test in the whole vehicle wind tunnel.

[0037] As Figure 1 Indicated, according to the test device 100 of the embodiment of the utility model, for fixing scale model in wind tunnel test and comprising: first lateral rod 1, second lateral rod 2, first longitudinal rod 3 and second longitudinal rod 4.

[0038] Specifically, the first lateral rod 1 and the second lateral rod 2 extend along the first direction and are spaced apart along the second direction, for example, in the example shown in Figure 1 The first lateral rod 1 and the second lateral rod 2 are parallel and spaced apart. The first longitudinal rod 3 and the second longitudinal rod 4 extend along the second direction and are spaced apart along the first direction, the two ends of the first longitudinal rod 3 in the length direction are connected with the first lateral rod 1 and the second lateral rod 2 respectively, the two ends of the second longitudinal rod 4 in the length direction are connected with the first lateral rod 1 and the second lateral rod 2 respectively, and the first direction and the second direction are perpendicular and parallel to the horizontal plane.

[0039] The first longitudinal rod 3 and the second longitudinal rod 4 are position-adjustable along the first direction on the first transverse rod 1 and the second transverse rod 2, and the first longitudinal rod 3 and the second longitudinal rod 4 are length-adjustable along the second direction, and the scale model is suitable for being arranged on the first longitudinal rod 3 and the second longitudinal rod 4.

[0040] When the mounting position of the scale model in the first direction is adjusted, the first longitudinal rod 3 and the second longitudinal rod 4 can be adjusted in the connecting position along the first direction on the first transverse rod 1 and the second transverse rod 2, and when the mounting position of the scale model in the second direction is adjusted, the distance between the first transverse rod 1 and the second transverse rod 2 can be adjusted first, and then the length of the first longitudinal rod 3 and the second longitudinal rod 4 is adjusted correspondingly, so that the mounting position of the scale model on the first longitudinal rod 3 and the second longitudinal rod 4 is adjusted.

[0041] In the present application, by adjusting the position of the first longitudinal rod 3 and the second longitudinal rod 4 along the first direction on the first transverse rod 1 and the second transverse rod 2, and adjusting the length of the first longitudinal rod 3 and the second longitudinal rod 4 along the second direction, the test device 100 is adapted to the change of the mounting position of the scale model of different sizes, the adjustment is more convenient, the adjustment range is larger, and small-range adjustment can be realized.

[0042] According to the test device 100 of the embodiment of the present application, by arranging the first transverse rod 1 and the second transverse rod 2 extending along the first direction and being arranged at intervals along the second direction, and arranging the first longitudinal rod 3 and the second longitudinal rod 4 extending along the second direction and being arranged at intervals along the first direction, the two ends of the first longitudinal rod 3 in the length direction and the two ends of the second longitudinal rod 4 in the length direction are connected with the first transverse rod 1 and the second transverse rod 2 respectively, the distance between the first transverse rod 1 and the second transverse rod 2 can be adjusted, the length of the first longitudinal rod 3 and the second longitudinal rod 4 can be adjusted at the same time, and the distance between the first longitudinal rod 3 and the second longitudinal rod 4 can be adjusted to adapt to the change of the mounting position of the scale model of different sizes, the adjustment is more convenient, the adjustment range is larger, and small-range adjustment can be realized. In addition, the test device 100 of the present application has the advantages of simple structure, high precision, simple and convenient installation and operation.

[0043] In some embodiments of the present application, as Figure 1As shown, the two ends of the first longitudinal rod 3 in the length direction are movably arranged on the first transverse rod 1 and the second transverse rod 2 respectively, and the two ends of the second longitudinal rod 4 in the length direction are movably arranged on the first transverse rod 1 and the second transverse rod 2 respectively. Therefore, the first longitudinal rod 3 and the second longitudinal rod 4 can be steplessly adjusted along the first direction on the first transverse rod 1 and the second transverse rod 2, the first longitudinal rod 3 and the second longitudinal rod 4 can be located at any position of the first transverse rod 1 and the second transverse rod 2 along the first direction, the accuracy of the adjustment of the first longitudinal rod 3 and the second longitudinal rod 4 along the first direction is ensured, the adjustment range of the first longitudinal rod 3 and the second longitudinal rod 4 along the first direction is expanded, and the installation position of the different size scale models is better adapted to the change.

[0044] In some embodiments of the utility model, the side of the first transverse rod 1 and the second transverse rod 2 towards each other is provided with the first sliding groove extending along the first direction, and the two ends of the first longitudinal rod 3 in the length direction are movably arranged in the first sliding groove of the first transverse rod 1 and the first sliding groove of the second transverse rod 2 respectively.

[0045] Of course, the utility model is not limited to this, for example, Figures 1-4 As shown, the test device 100 further includes a first connecting piece 5 and a second connecting piece 6, the first longitudinal rod 3 is connected with the first transverse rod 1 and the second transverse rod 2 through the first connecting piece 5, the side of the first connecting piece 5 along the second direction is provided with a first T-shaped bolt 51, the side of the first connecting piece 5 along the first direction is provided with a second T-shaped bolt 52, the second longitudinal rod 4 is connected with the first transverse rod 1 and the second transverse rod 2 through the second connecting piece 6, the side of the second connecting piece 6 along the second direction is provided with a third T-shaped bolt, the side of the second connecting piece 6 along the first direction is provided with a fourth T-shaped bolt, the side of the first transverse rod 1 and the second transverse rod 2 towards each other is provided with the first T-shaped groove 11 matched with the first T-shaped bolt 51 and the third T-shaped bolt, the two ends of the first longitudinal rod 3 in the length direction are provided with the second T-shaped groove 31 matched with the second T-shaped bolt 52 respectively, and the two ends of the second longitudinal rod 4 in the length direction are provided with the third T-shaped groove 41 matched with the fourth T-shaped bolt respectively.

[0046] It can be understood that the first longitudinal rod 3 is provided with the first connecting piece 5 at both ends in the length direction, the first T-shaped bolt 51 of the first connecting piece 5 close to the first transverse rod 1 is movably arranged in the first T-shaped groove 11 of the first transverse rod 1, the second T-shaped bolt 52 of the first connecting piece 5 is arranged in the second T-shaped groove 31 of the first longitudinal rod 3 close to one end of the first transverse rod 1, the connection between the first transverse rod 1 and the first longitudinal rod 3 is realized, and the movement of the first longitudinal rod 3 along the length direction of the first transverse rod 1 is realized through the movement of the first T-shaped bolt 51 in the first T-shaped groove 11 of the first transverse rod 1; the first T-shaped bolt 51 of the first connecting piece 5 close to the second transverse rod 2 is movably arranged in the first T-shaped groove 11 of the second transverse rod 2, the second T-shaped bolt 52 of the first connecting piece 5 is arranged in the second T-shaped groove 31 of the first longitudinal rod 3 close to one end of the second transverse rod 2, the connection between the second transverse rod 2 and the first longitudinal rod 3 is realized, and the movement of the first longitudinal rod 3 along the length direction of the second transverse rod 2 is realized through the movement of the first T-shaped bolt 51 in the first T-shaped groove 11 of the second transverse rod 2.

[0047] The second longitudinal rod 4 is provided with the second connecting piece 6 at both ends in the length direction, the third T-shaped bolt of the second connecting piece 6 close to the first transverse rod 1 is movably arranged in the first T-shaped groove 11 of the first transverse rod 1, the fourth T-shaped bolt of the second connecting piece 6 is arranged in the third T-shaped groove 41 of the second longitudinal rod 4 close to one end of the first transverse rod 1, the connection between the first transverse rod 1 and the second longitudinal rod 4 is realized, and the movement of the second longitudinal rod 4 along the length direction of the first transverse rod 1 is realized through the movement of the third T-shaped bolt in the first T-shaped groove 11 of the first transverse rod 1; the third T-shaped bolt of the second connecting piece 6 close to the second transverse rod 2 is movably arranged in the first T-shaped groove 11 of the second transverse rod 2, the fourth T-shaped bolt of the second connecting piece 6 is arranged in the third T-shaped groove 41 of the second longitudinal rod 4 close to one end of the second transverse rod 2, the connection between the second transverse rod 2 and the second longitudinal rod 4 is realized, and the movement of the second longitudinal rod 4 along the length direction of the second transverse rod 2 is realized through the movement of the third T-shaped bolt in the first T-shaped groove 11 of the second transverse rod 2. The structure of the second connecting piece 6 can be the same as that of the first connecting piece 5.

[0048] In addition, as shown in Figure 1 The first longitudinal rod 3 is provided with two first connecting pieces 5 at both ends in the length direction, the two first connecting pieces 5 are respectively located on both sides of the first longitudinal rod 3 along the first direction, the first longitudinal rod 3 is provided with two second T-shaped grooves 31 at both ends in the length direction, the two second T-shaped grooves 31 are respectively located on both sides of the first longitudinal rod 3 along the first direction and extend along the length direction of the first longitudinal rod 3, and the two second T-shaped grooves 31 on the same side along the second direction are matched with the two second T-shaped bolts 52 of the two first connecting pieces 5 on the same side.

[0049] The second longitudinal rod 4 is provided with two second connecting pieces 6 at both ends in the length direction, the two second connecting pieces 6 are respectively located at both sides of the second longitudinal rod 4 in the first direction, the second longitudinal rod 4 is provided with two third T-shaped grooves 41 at both ends in the length direction, the two third T-shaped grooves 41 are respectively located at both sides of the second longitudinal rod 4 in the first direction and extend in the length direction of the second longitudinal rod 4, and the two third T-shaped grooves 41 on the same side in the second direction are matched with the two fourth T-shaped bolts of the two second connecting pieces 6 on the same side.

[0050] Optionally, as shown in Figure 1 and Figure 2 , the first connecting piece 5 and the second connecting piece 6 are triangular prisms, and adjacent two side walls in the first connecting piece 5 and the second connecting piece 6 are perpendicular to each other, the first T-shaped bolt 51 and the second T-shaped bolt 52 are arranged on the two side walls perpendicular to each other of the first connecting piece 5, and the third T-shaped bolt and the fourth T-shaped bolt are arranged on the two side walls perpendicular to each other of the second connecting piece 6.

[0051] In some embodiments of the utility model, the test device 100 can further include a locking mechanism, the locking mechanism is used for fixing the first longitudinal rod 3 and the second longitudinal rod 4 on the first transverse rod 1 and the second transverse rod 2 after the first longitudinal rod 3 and the second longitudinal rod 4 are adjusted to the position in the first direction, and the position of the first longitudinal rod 3 and the second longitudinal rod 4 in the first direction is relatively fixed when connecting the scaled model, so that the connection of the scaled model is facilitated.

[0052] In some embodiments of the utility model, as shown in Figure 1 and Figure 5 , the first longitudinal rod 3 and the second longitudinal rod 4 include a connecting rod 32 and a sliding rod 33, the connecting rod 32 extends in the second direction, the sliding rod 33 extends in the second direction, the two ends of the connecting rod 32 in the length direction are provided with the sliding rod 33, and the sliding rod 33 is movably connected with the connecting rod 32 in the second direction, for adjusting the length of the first longitudinal rod 3 and the second longitudinal rod 4 in the second direction. The connecting rod 32 and the two sliding rods 33 are movably connected in the second direction, when the length of the first longitudinal rod 3 and the second longitudinal rod 4 is adjusted, the positional relationship of the connecting rod 32 and one of the two sliding rods 33 in the second direction can be adjusted, or the positional relationship of the connecting rod 32 and the two sliding rods 33 in the second direction can be adjusted simultaneously.

[0053] Among them, the two sliding rods 33 can be provided with sliding holes extending in the second direction, and the two ends of the connecting rod 32 in the length direction are movably arranged in the sliding holes of the two sliding rods 33 in the second direction.

[0054] In addition, the first longitudinal rod 3 and the second longitudinal rod 4 can further be provided with locking mechanisms, which can be used to fix the connecting rod 32 and the slide rod 33 after the length of the first longitudinal rod 3 is adjusted to the right position, so as to ensure the reliability of the first longitudinal rod 3 and the second longitudinal rod 4.

[0055] In some embodiments of the utility model, as shown in Figure 1 , Figure 5 and two end rods 34 are connected to the ends of the two slide rods 33 away from each other, and the ends of the two end rods 34 away from each other are connected to the first transverse rod 1 and the second transverse rod 2 respectively.

[0056] Thus, the connection between the first longitudinal rod 3 and the first transverse rod 1 and the second transverse rod 2 is facilitated, and the connection between the second longitudinal rod 4 and the first transverse rod 1 and the second transverse rod 2 is facilitated.

[0057] In some embodiments of the utility model, the scale model is provided with a fifth T-shaped bolt, and the upper surface of at least one of the end rod 34 and the slide rod 33 is provided with a fourth T-shaped groove matched with the fifth T-shaped bolt.

[0058] In some embodiments of the utility model, the fifth T-shaped bolt can be arranged on the vehicle body of the vehicle when the scale model is a vehicle, so as to avoid fixing the wheels of the vehicle and affecting the rotation test of the wheels, thereby better simulating the real situation.

[0059] In some embodiments of the utility model, as shown in Figure 1 , Figure 6 and Figure 7As shown, the test device 100 further comprises a connecting assembly 7, the lower surface of the first transverse rod 1 and the lower surface of the second transverse rod 2 are provided with the connecting assembly 7, which is used to fix the test device 100 to the wind tunnel balance measurement platform to realize the force measurement function. Specifically, the balance (for example, a six-component balance) is provided with a turntable, and the turntable is provided with a skirt restraint system, and the connecting assembly 7 is connected with the skirt restraint system. Thus, the test device 100 can be conveniently fixed to the wind tunnel balance measurement platform. In addition, the test tool of the present application, in cooperation with the skirt restraint system and the turntable of the six-component balance, can simultaneously realize the attitude adjustment of the scaled model, including the ground clearance, pitch, and yaw.

[0060] Specifically, as shown in Figure 1 、 Figure 6 and Figure 7 , the connecting assembly 7 comprises a connecting shaft 71 and a support 72, the lower end of the connecting shaft 71 is used to connect with the wind tunnel balance measurement platform, the lower end of the support 72 is rotationally connected with the upper end of the connecting shaft 71 and the rotation axis extends in the first direction, and the upper end of the support 72 is connected with the first transverse rod 1 or the second transverse rod 2. The support 72 is rotatable relative to the connecting shaft 71 about the rotation axis extending in the first direction, so that after the support 72 is connected with the first transverse rod 1 or the second transverse rod 2, the height of the first transverse rod 1 and the second transverse rod 2 can be adjusted by adjusting the angle between the support 72 and the connecting shaft 71, and the angle of the scaled model can be adjusted, thereby facilitating the adjustment of the position of the scaled model.

[0061] Further, as shown in Figure 1 、 Figure 6 and Figure 7 , the upper end surface of the connecting shaft 71 has a first connecting portion 711 and a second connecting portion 712, the first connecting portion 711 and the second connecting portion 712 are spaced apart in the first direction and define a mounting groove 715, the first connecting portion 711 and the second connecting portion 712 have a first mounting hole 714 penetrating in the first direction, the lower end of the support 72 has a groove connecting plate 721, at least part of the groove connecting plate 721 is located in the mounting groove 715 and has a second mounting hole 722 penetrating in the first direction, and the test device 100 further comprises a pin shaft, the pin shaft is arranged in the first mounting hole 714 and the second mounting hole 722. It can be understood that the support 72 and the connecting shaft 71 are connected by the pin shaft, and the support 72 and the connecting shaft 71 rotate relative to each other about the pin shaft.

[0062] In addition, in the present application, the first connecting portion 711 and the second connecting portion 712 arranged at intervals can limit the groove connecting plate 721 on the support 72, and during assembly, the groove connecting plate 721 can be assembled between the first connecting portion 711 and the second connecting portion 712, the first mounting hole 714 and the second mounting hole 722 are aligned, and the pin shaft is arranged in the first mounting hole 714 and the second mounting hole 722 to realize the connection between the connecting shaft 71 and the support 72.

[0063] In some embodiments of the utility model, as shown in Figure 1 and Figure 7 The upper end of the support 72 has a transverse rod connecting plate 723, which is connected to the first transverse rod 1 or the second transverse rod 2 by fasteners. Specifically, the transverse rod connecting plate 723 of the support 72 in the connecting assembly 7 below the first transverse rod 1 is connected to the first transverse rod 1 by fasteners, and the transverse rod connecting plate 723 of the support 72 in the connecting assembly 7 below the second transverse rod 2 is connected to the second transverse rod 2 by fasteners. This can improve the reliability of the connection between the support 72 and the first transverse rod 1 and the connection between the support 72 and the second transverse rod 2, and can improve the assembly efficiency.

[0064] Specifically, as shown in Figure 7 The transverse rod connecting rod 32 is perpendicular to the slot connecting plate 721, and the transverse rod connecting plate 723 has a connecting hole 724 that penetrates the transverse rod connecting plate 723 in the thickness direction of the transverse rod connecting plate 723. The connecting hole 724 is multiple, for example, in the example shown in Figure 7 The connecting hole 724 is four, the transverse rod connecting plate 723 is rectangular, and the four connecting holes 724 are respectively arranged at the four corners of the transverse rod connecting plate 723. The transverse rod connecting plate 723 can be connected to the first transverse rod 1 or the second transverse rod 2 by four fasteners, such as bolts.

[0065] In some embodiments of the utility model, as shown in Figure 1 and Figure 6 The lower end of the connecting shaft 71 has a bolt part 713 for connecting with the wind tunnel balance measurement platform. The wind tunnel balance measurement platform has a threaded hole, and the bolt part 713 of the lower end of the connecting shaft 71 can be directly screwed with the threaded hole to fix the connecting assembly 7, thereby fixing the test device 100, and the connection method is simple and the assembly efficiency is high.

[0066] In addition, in this application, the distance between the first transverse rod 1 and the second transverse rod 2 is adjustable, and corresponding to the same connecting assembly 7 below the first transverse rod 1 and the second transverse rod 2, the wind tunnel balance measurement system has multiple threaded holes arranged at intervals in the second direction. When the distance between the first transverse rod 1 and the second transverse rod 2 is adjusted, the bolt part 713 of the connecting shaft 71 below the first transverse rod 1 and the second transverse rod 2 can be connected and fixed in different threaded holes.

[0067] In some embodiments of the utility model, a plurality of connecting assemblies 7 are arranged below the first horizontal rod 1 and are arranged along the length direction of the first horizontal rod 1, and a plurality of connecting assemblies 7 are arranged below the second horizontal rod 2 and are arranged along the length direction of the second horizontal rod 2. Thus, the reliability of fixing the first horizontal rod 1 and the second horizontal rod 2 on the wind tunnel balance measuring platform can be improved.

[0068] For example, in the example shown in the figure, two connecting assemblies 7 are arranged below the first horizontal rod 1 and are respectively arranged at the two ends of the length direction of the first horizontal rod 1, and two connecting assemblies 7 are arranged below the second horizontal rod 2 and are respectively arranged at the two ends of the length direction of the second horizontal rod 2. Figure 1

[0069] In some embodiments of the utility model, the test device 100 is a steel structural member, which has high structural strength and good fixing effect.

[0070] The test device 100 of the utility model can be used for carrying out the scaled-down automobile model test in the whole vehicle wind tunnel, and can be adjusted in the horizontal / vertical direction according to the size of the test object to meet the needs of different sizes of test objects. During measurement, the test device 100 is adjusted to the corresponding size according to the size of the test object, the test device 100 is connected with the balance measuring platform through the connecting shaft 71, the test object is installed on the test device 100, and finally the main fan of the wind tunnel is started, the required wind speed is adjusted, and the aerodynamic six-component force data is collected by the balance.

[0071] In addition, the test time can be greatly advanced to the early stage of modeling design by using the utility model for carrying out the scaled-down automobile model test in the whole vehicle wind tunnel, and the agility of vehicle development is improved. The scaled-down model has a lower price than the whole vehicle model, and at least 50% of the cost can be saved for a 1 / 3 scaled-down model. Meanwhile, the device can also be used for carrying out high-speed rail model, flying car / vehicle and sports tests, and the test capacity of the automobile wind tunnel is expanded, which provides feasibility for the development of cross-border business.

[0072] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] ​Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A testing apparatus, characterized in that, A scaled-down model used in fixed wind tunnel tests, including: A first transverse bar and a second transverse bar, the first transverse bar and the second transverse bar extending along a first direction and spaced apart along a second direction; A first longitudinal bar and a second longitudinal bar extend along the second direction and are spaced apart along the first direction. The two ends of the first longitudinal bar in the length direction are respectively connected to the first transverse bar and the second transverse bar. The two ends of the second longitudinal bar in the length direction are respectively connected to the first transverse bar and the second transverse bar. The first direction and the second direction are perpendicular to each other and parallel to the horizontal plane. The positions of the first longitudinal rod and the second longitudinal rod along the first direction are adjustable on the first transverse rod and the second transverse rod, and the lengths of the first longitudinal rod and the second longitudinal rod along the second direction are adjustable. The scaled-down model is adapted to be mounted on the first longitudinal rod and the second longitudinal rod.

2. The experimental apparatus according to claim 1, characterized in that, The two ends of the first longitudinal bar along its length are respectively movably disposed on the first transverse bar and the second transverse bar; The two ends of the second longitudinal bar are movably disposed on the first transverse bar and the second transverse bar, respectively.

3. The experimental apparatus according to claim 2, characterized in that, The test apparatus includes a first connector and a second connector. The first longitudinal bar is connected to the first transverse bar and the second transverse bar respectively via the first connector. The first connector is provided with a first T-bolt on one side along the second direction and a second T-bolt on one side along the first direction. The second longitudinal bar is connected to the first transverse bar and the second transverse bar respectively via the second connector. The second connector is provided with a third T-bolt on one side along the second direction and a fourth T-bolt on one side along the first direction. The first transverse bar and the second transverse bar each have a first T-slot on one side facing each other, which mates with the first T-bolt and the third T-bolt. The first longitudinal bar has a second T-slot at both ends along its length that mates with the second T-bolt. The second longitudinal bar has a third T-slot at both ends along its length that mates with the fourth T-bolt.

4. The experimental apparatus according to claim 1, characterized in that, Both the first longitudinal bar and the second longitudinal bar include: A connecting rod that extends along the second direction; A sliding rod extends along the second direction, and the connecting rod has sliding rods at both ends along its length. The sliding rods are movably connected to the connecting rod along the second direction, and are used to adjust the lengths of the first longitudinal rod and the second longitudinal rod along the second direction.

5. The test apparatus according to claim 4, characterized in that, Each of the two sliding rods has an end rod connected to one end facing away from the other, and the two end rods are respectively connected to the first transverse rod and the second transverse rod.

6. The experimental apparatus according to claim 5, characterized in that, The scaled-down model is provided with a fifth T-bolt, and the upper surface of at least one of the end rod and the slide rod is provided with a fourth T-groove that mates with the fifth T-bolt.

7. The test apparatus according to any one of claims 1-6, characterized in that, Also includes: A connecting assembly is disposed on the lower surfaces of the first transverse rod and the second transverse rod, and is used to fix the test device to the wind tunnel balance measurement platform.

8. The test apparatus according to claim 7, characterized in that, The connection component includes: A connecting shaft, the lower end of which is used to connect to the wind tunnel balance measurement platform; The support has its lower end rotatably connected to the upper end of the connecting shaft and the axis of rotation extends along the first direction. The upper end of the support is connected to the first transverse rod or the second transverse rod.

9. The test apparatus according to claim 8, characterized in that, The upper end face of the connecting shaft has a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion being spaced apart in the first direction and defining a mounting groove, the first connecting portion and the second connecting portion having a first mounting hole penetrating in the first direction, the lower end of the support having a groove connecting plate, at least a portion of the groove connecting plate being located within the mounting groove and having a second mounting hole penetrating in the first direction, the test device further includes: A pin, which passes through the first mounting hole and the second mounting hole.

10. The test apparatus according to claim 8, characterized in that, The upper end of the support has a transverse rod connecting plate, which is connected to the first transverse rod or the second transverse rod by fasteners; And / or, the lower end of the connecting shaft has a bolt portion for connection with the wind tunnel balance measurement platform.

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