A vehicle body testing device

Abstract

The application discloses a vehicle body testing device, which comprises a support frame, a frame assembly, a limiting assembly and a telescopic cylinder. In the application, the telescopic cylinder is horizontally installed between the bearing surface of the stress beam of the frame assembly and the mounting surface of the support frame. Since the bearing surface and the mounting surface are parallel and form an angle α with the longitudinal section, the force applied by the telescopic cylinder on the stress beam forms an angle α with the longitudinal section, so that the simulation of the multi-angle stress load of the stress beam can be realized, and the simulation result is relatively accurate, which has important guiding significance for the actual design of the vehicle body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle technology, in particular to a car body test device. BACKGROUND

[0002] With the rapid development of rail transportation, there are diversified and rapid design requirements for various component structures of vehicles. As the main load-bearing component of vehicles, car bodies face many difficulties such as lightweight, high strength and complex structure during the design and manufacturing process. At the same time, after trial production of new vehicle models, a large number of test verifications need to be carried out on the strength and stiffness of the car bodies to support the vehicle design. SUMMARY

[0003] The purpose of the present application is to provide a car body test device capable of loading force load angle on a simulated car body.

[0004] The present application provides a car body test device, characterized in that it comprises the following components:

[0005] a support frame;

[0006] a frame assembly comprising a frame formed by a plurality of beams, used to simulate the skeleton of the tested car body; at least one of the plurality of beams is a force beam, the side wall of the force beam has a force bearing surface, and the force bearing surface has an included angle with the longitudinal section or the transverse section of the frame assembly;

[0007] a limiting assembly, the frame assembly is supported on the support frame, and the limiting assembly can limit the movement of the frame assembly relative to the support frame to position it on the support frame;

[0008] a telescopic cylinder, the telescopic cylinder is horizontally arranged, the support frame further has a mounting surface, the mounting surface is parallel to the force bearing surface, the fixed end of the telescopic cylinder is mounted on the mounting surface, and the movable end can abut against the force bearing surface.

[0009] In the present application, the telescopic cylinder is horizontally mounted between the force bearing surface of the force beam of the frame assembly and the mounting surface of the support frame. Since the force bearing surface and the mounting surface are parallel and form an angle α with the longitudinal section, the force exerted by the telescopic cylinder on the force beam forms an angle α with the longitudinal section, thereby enabling the simulation of multi-angle force load of the force beam, and the simulation result is relatively accurate, which has important guiding significance for the actual design of the car body.

[0010] Optionally, it further comprises a base, the mounting surface is arranged on the side of the base facing the frame assembly; the car body test device further comprises a first frame body in a box structure, a plurality of mounting hole groups are arranged on the side wall opposite to the first side of the frame assembly, each mounting hole group comprises at least one mounting hole for detachably mounting the base.

[0011] Optionally, the height of the first frame body relative to the support frame is adjustable.

[0012] Alternatively,

[0013] at least comprising a first support column group and a second support column group, the first support column group comprising a plurality of first support columns, the second support column group comprising a plurality of second support columns, the first support columns and the second support columns having different heights, and the first frame body being capable of being supported on the support frame by the first support column group or the second support column group.

[0014] Optionally, the limiting assembly comprises a second frame body in the form of a box structure, the second frame body being abuttingly fitted with the frame assembly, the first frame body and the second frame body being respectively located on two sides of the frame assembly and being fixed by at least one guide rod.

[0015] Optionally, the support frame is further fixed with an upright frame and an inclined support, the upright frame being vertically supported and fixed on the support frame, and the upright frame being further supported on the support frame by the inclined support, and an actuator being further provided on the upright frame for exerting force on part of the beams on a second side of the frame assembly, wherein the first side and the second side are perpendicular.

[0016] Optionally, the frame assembly comprises a plurality of cross beams and longitudinal beams, the cross beams and the longitudinal beams forming a main skeleton of the frame body, and the inside of the peripheral skeleton being further fixed with a plurality of support cross beams and support longitudinal beams, both ends of the support cross beams and the support longitudinal beams being respectively fixedly connected to the beams on opposite sides of the peripheral skeleton.

[0017] Optionally, a block body is provided, the block body being fixed to the force bearing beam, and the force bearing surface being located on the block body.

[0018] Alternatively / and, one of the bottom wall of the frame assembly and the support frame is provided with a positioning column, and the other is provided with a positioning hole fitted with the positioning column.

[0019] Optionally, the force bearing beam comprises a simulated collision column and a simulated corner column, respectively used for simulating a collision column and a corner column of a vehicle body, and the force bearing surface and the longitudinal surface of the frame assembly have a predetermined angle.

[0020] Optionally, an intermediate cross beam is further provided, and the same force bearing beam comprises a first section and a second section along the length direction, adjacent ends of the first section and the second section being fixedly connected to the intermediate cross beam, and the force bearing surface being located in a region of the intermediate cross beam between the adjacent two sections of the same force bearing beam.

[0021] Optionally, the same force bearing beam has at least two force bearing surfaces, and the included angles of at least two of the force bearing surfaces with the longitudinal surface are different. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A three-dimensional schematic view of a vehicle body testing device in an embodiment of the present application;

[0023] Figure 2 A structural schematic view of a frame assembly shown in FIG. 1; Figure 1

[0024] Figure 3 A front view of FIG. 2; Figure 2

[0025] Figure 4 A side view of FIG. 3; Figure 2

[0026] Figure 5 A structural schematic view of a support frame, a vertical support, a diagonal support and a support assembly of the vehicle body testing device in FIG. 4; Figure 1

[0027] Figure 6 A side view of FIG. 5; Figure 5

[0028] Figure 7 An assembly schematic view of a first frame body, an extension cylinder and a base in FIG. 6; Figure 1

[0029] Figure 8 An exploded schematic view of FIG. 7; Figure 7

[0030] A force applied to a diagonal column and a longitudinal section shown in FIG. 8 forms an angle of a; Figure 9

[0031] A force applied to a diagonal column and a longitudinal section shown in FIG. 9 forms an angle of -a. Figure 10

[0032]

[0033] 100 frame assembly, 10 positioning column, 101 connecting plate, 11 simulated collision column, 12 simulated diagonal column, 13 first force receiving surface, 14 second force receiving surface, 15 longitudinal beam, 16 cross beam, 171 first cross beam segment, 172 second cross beam segment, 18 reinforcing plate, 191 first longitudinal beam segment, 192 vertical beam;

[0034] 200 support frame

[0035] 21 first frame body, 22 extension cylinder, 23 base, first mounting surface 231, second mounting surface 232, 24 guide rod, 25 locking nut, 26 second frame body, 27, 281 vertical support, 282 diagonal support, 283 mounting seat, 201 fixing plate, 2a positioning hole, 202 limiting column

[0036] 300 actuator DETAILED DESCRIPTION​​​​​​​​

[0037] Without loss of generality, the present application takes the vehicle body test device for simulating the test of the vehicle body section of the rail vehicle with the collision column and the corner column as an example to introduce the technical scheme and the technical effect, and the vehicle body test device of the present application

[0038] In order to make the technical personnel in the art better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0039] Please refer to Figures 1 to 10 The present application provides a vehicle body test device, which comprises a support frame, a frame assembly, a limiting assembly and a telescopic cylinder.

[0040] It should be noted that the length direction of the frame assembly 100 corresponds to the length direction of the simulated vehicle body, and the width direction of the frame assembly 100 corresponds to the width direction of the simulated vehicle body. The longitudinal section corresponds to the plane along the length direction of the vehicle body, and the transverse section corresponds to the plane along the width direction of the vehicle body.

[0041] Please refer to Figure 5 and Figure 6 The support frame 200 provided by the present application can not only provide a mounting base for other components of the vehicle body test device, but also can be connected and fixed with other external environments. The specific form of the support frame 200 can have various forms under the premise of meeting the needs, and the present application mainly provides a structure in which the support frame 200 is formed by welding a plurality of rods. Of course, it should be understood by those skilled in the art that the structure of the support frame 200 is not limited to the structure described herein but can also be other structure forms.

[0042] Please refer to Figures 2 to 4 The frame assembly 100 in the present application comprises a frame body formed by a plurality of beams, which is used to simulate the skeleton of the tested vehicle body. The beams can be rectangular tubes, square tubes or other tubular structures. According to the different setting directions of the beams, the beams can be divided into transverse beams 16 and longitudinal beams 15. At least one of the plurality of beams is a force-bearing beam, and the side wall of the force-bearing beam has a force-bearing surface. The force-bearing surface and the longitudinal section or the transverse section of the frame assembly 100 have an included angle. For example, the force-bearing surface and the longitudinal section have a predetermined included angle to simulate the force-bearing of the collision column 11 and the corner column. Please refer to Figure 9 and Figure 10 In FIG. 9, the force applied to the corner column and the longitudinal section have an angle of a, Figure 10 the force applied to the corner column and the longitudinal section have an angle of -a, Figure 10 and Figure 9 The two forces in the above two figures are symmetrical about the longitudinal section. The included angle between the force-bearing surface and the longitudinal section or the transverse section can be determined according to the actual situation, and a can be any value in the range of 0 to ± 90 degrees. In the following, a is taken as 15 degrees and -15 degrees as an example to introduce the technical scheme and the technical effect.

[0043] The frame assembly 100 in the application is supported on the support frame 200, and the limiting assembly can limit the movement of the frame assembly 100 relative to the support frame 200 to position it on the support frame 200; that is, under the action of the limiting assembly, the frame assembly 100 cannot move in position relative to the support frame 200. In a specific example, the limiting assembly can limit the lateral position and the longitudinal position of the frame assembly 100 to achieve the limiting of the frame assembly 100. Figure 1 The x direction is transverse, and the y direction is longitudinal.

[0044] The telescopic cylinder 22 is horizontally arranged, and the support frame 200 further has a mounting surface parallel to the bearing surface, the fixed end of the telescopic cylinder 22 is mounted on the mounting surface, and the movable end can abut against the bearing surface. When two or two kinds of loads of different angles need to be loaded, the mounting surface and the bearing surface corresponding to the load can be arranged respectively to meet the test requirements, for example, the first mounting surface 231 and the first bearing surface 13 are arranged in parallel to meet the loading of the load at an angle of ɑ1 to the longitudinal section, and the second mounting surface 232 and the second bearing surface 14 are arranged in parallel to meet the loading of the load at an angle of ɑ2 to the longitudinal section.

[0045] In the application, the telescopic cylinder 22 is horizontally mounted between the bearing surface of the force-bearing beam of the frame assembly 100 and the mounting surface of the support frame 200, and the bearing surface and the mounting surface are parallel and at an angle of ɑ to the longitudinal section, so that the force exerted by the telescopic cylinder 22 on the force-bearing beam is at an angle of ɑ to the longitudinal section, thereby achieving simulation of the multi-angle force load of the force-bearing beam, and the simulation result is relatively accurate, which has important guiding significance for actual vehicle body design.

[0046] In a specific example, the vehicle body test device in the application further comprises a base 23, and the mounting surface is arranged on one side of the base 23 facing the frame assembly 100; the vehicle body test device further comprises a first frame body 21 in a box structure, and a plurality of mounting hole groups are arranged on the side wall opposite to the first side of the frame assembly 100, each mounting hole group comprising at least one mounting hole 211 for detachably mounting the base 23.

[0047] In this way, according to the different positions of the force points of the frame assembly 100, the appropriate mounting hole group of the first frame body 21 can be selected to fix the base 23 of the telescopic cylinder 22, so as to improve the flexibility of the device. Taking the corner column and the collision column test as an example, the corner column and the collision column are located at different positions of the vehicle body, and correspondingly, the simulation corner column 12 and the simulation collision column 11 are also located at different positions of the frame assembly 100, so that according to the test conditions, the mounting position of the base 23 on the first frame body 21 can be adjusted to realize the force loading of the simulation corner column 12 and the simulation collision column 11 by the same set of telescopic cylinders 22.

[0048] In order to further improve the flexibility of the device, the height of the first frame body 21 relative to the support frame 200 is adjustable; there are various ways to achieve the height adjustment of the first frame body 21 relative to the support frame 200, for example, the first frame body 21 is supported on the support frame 200 through an adjustable component, or the first frame body 21 is supported on the support frame 200 through a support component with a fixed length, and the height adjustment of the first frame body 21 relative to the support frame 200 is achieved by replacing the support component with a suitable height.

[0049] In a specific example, the vehicle body test device of the present application at least includes a first support column group and a second support column group, the first support column group includes a plurality of first support columns, the second support column group includes a plurality of second support columns, the heights of the first support columns and the second support columns are different, and the first frame body 21 can be supported on the support table through the first support column group or the second support column group. Only a specific implementation in which the first support column 27 is installed on the support frame 200 is shown in the figure.

[0050] In each of the above embodiments, the limiting assembly includes a second frame body 26 in the form of a box structure, the second frame body 26 is in abutting cooperation with the frame assembly 100, the first frame body 21 and the second frame body 26 are respectively located on both sides of the frame assembly 100, and the two are fixed through at least one guide rod 24. The guide rod 24 can be fixedly connected with the first frame body 21 and the second frame body 26 through a locking nut 25.

[0051] The frame assembly 100 is located between the first frame body 21 and the second frame body 26, when the telescopic cylinder 22 installed on the first frame body 21 exerts a force on the frame assembly 100, the frame assembly 100 can abut against the second frame body 26, avoiding displacement of the frame assembly 100 in longitudinal displacement. And the first frame body 21 and the second frame body 26 are both box structures, and the structural stability is relatively high.

[0052] The support frame 200 of the above vehicle body test device is also fixed with an upright stand 281 and a diagonal brace 282, the upright stand 281 is vertically supported and fixed on the support table, the upright stand 281 can be fixedly connected with a plurality of transverse beams and longitudinal beams to form, and the upright stand 281 is further supported on the support table through the diagonal brace 282, the upright stand 281 is also provided with an actuator 300 for exerting a force on part of the beams on the second side of the frame assembly 100, wherein the first side and the second side are perpendicular. Specifically, the upright stand 281 is fixed with a mounting seat 283 for mounting the actuator 300, and the number of the actuator 300 can be one or more than one.

[0053] As shown in Figure 1 The upright stand 281 is located beside the frame assembly 100, and the actuator thereon can exert a force on the frame assembly 100 in the transverse direction (x direction), which can simulate the vehicle body transverse load loading test requirement. Of course, by setting the arrangement direction of the actuator, the force exerted by the actuator can also have a predetermined angle with the cross section.

[0054] In one embodiment, the arrangement of the beams on the second side of the frame assembly can refer to Figure 2 , including a vertical beam 192 located in the middle of the second side, and longitudinal simulation window beams 191 fixedly connected to both sides of the vertical beam 192. In addition, the vertical beam 192 can be divided into two or N segments along the length direction, and the adjacent two segments are fixedly connected to a transition longitudinal beam 193.

[0055] In one embodiment, the frame assembly 100 includes a plurality of horizontal beams and longitudinal beams forming the main skeleton of the frame, and a plurality of support horizontal beams and support longitudinal beams are fixedly connected inside the outer skeleton, and the two ends of the support horizontal beams and the support longitudinal beams are fixedly connected to the beams on the opposite side of the outer skeleton. As shown in Figure 2 , the number of support horizontal beams 17 and support longitudinal beams 17' is two, and the two ends of each support horizontal beam 17 are supported between the two impact columns on the opposite side, and the two ends of each support longitudinal beam 17' are supported between the beams on the opposite side. Of course, the number of support horizontal beams 17 and support longitudinal beams 17' is not limited to the number described herein, and can also be one or three or other numbers.

[0056] In one embodiment, the vehicle body test device includes a block 13 fixedly connected to the force beam, and the force bearing surface is located on the block; the block 13 can be fixedly connected to the force beam, and of course can also be detachably connected to the force beam, and can be installed and adjusted at any time, so as to improve the flexibility of the test.

[0057] In one embodiment, one of the bottom wall of the frame assembly 100 and the support frame 200 is provided with a positioning column, and the other is provided with a positioning hole matched with the positioning column. As shown in the figure, the bottom of the frame assembly 100 is fixedly connected with two positioning columns 10, and the support frame 200 is provided with positioning holes 2a matched with the positioning columns. Specifically, for the support frame formed by the horizontal beams and the longitudinal beams, in order to facilitate the arrangement of the positioning holes, the support frame can also be fixedly connected with a fixed plate 201, and the positioning holes are arranged on the fixed plate 201.

[0058] In addition, the support frame 200 is also provided with four upward limiting columns 202, which limit the transverse displacement of the frame assembly 100. For example, the limiting column 202 can cooperate with the longitudinal beam of the frame assembly 100 to play a transverse limiting role.

[0059] The positioning column, the positioning hole and the limiting column all play a role of limiting the relative position of the frame assembly 100 and the support frame 200.

[0060] The force bearing beam includes a simulation impact column 11 and a simulation corner column 12, which are used to simulate the impact column and the corner column of the vehicle body respectively, and the force bearing surface has a predetermined angle with the longitudinal surface of the frame assembly 100; the longitudinal surface of the frame assembly 100 corresponds to the longitudinal section of the vehicle body, and correspondingly, the transverse surface of the frame assembly 100 corresponds to the transverse section of the vehicle body.

[0061] The vehicle body testing device further includes an intermediate cross beam, and each force bearing beam includes a first section and a second section along the length direction, taking the simulation corner column 12 as an example, the simulation corner column 12 includes a first section 121 and a second section 122, and the adjacent ends of the first section 121 and the second section 122 are fixedly connected to the intermediate cross beam 17, and the force bearing surface is located in the region of the intermediate cross beam 17 between the adjacent two sections of the same force bearing beam. In this way, the structural stability of the position of the force bearing beam can be increased.

[0062] Of course, the force bearing beam along the length direction is not limited to including two sections, but can also include three sections or other number of sections.

[0063] As described above, the force bearing surface can be set according to the testing requirements, and the same force bearing beam can have at least two force bearing surfaces, and the included angles of at least two of the force bearing surfaces with the longitudinal surface are different.

[0064] The vehicle body testing device provided by the present application is described in detail above. The principles and implementation modes of the present application are described by applying specific examples in this paper, and the above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A vehicle body testing device, characterized in that, Includes the following components: A support frame, on which a base is provided; A frame assembly includes a frame formed by several beams rigidly connected together, used to simulate the skeleton of the test vehicle body; at least one of the beams is a load-bearing beam, the side wall of the load-bearing beam has a load-bearing surface, and the load-bearing surface has an angle with the longitudinal section or cross section of the frame assembly; it includes a block, the block being detachably installed on the load-bearing beam, and the load-bearing surface is located on the block; A limiting component is provided, wherein the frame assembly is supported by the support frame, and the limiting component is capable of restricting the movement of the frame assembly relative to the support frame to position it on the support frame; the limiting component includes a second frame and a first frame, both of which are box-shaped structures, the second frame abutting against the frame assembly, the first frame and the second frame being located on opposite sides of the frame assembly, and both being fixed by at least one guide rod; a plurality of mounting hole groups are provided on the side wall of the first frame opposite to the first side of the frame assembly, each mounting hole group including at least one mounting hole for detachably mounting the base; The base also has a mounting surface, which is located on the side of the base facing the frame assembly; the mounting surface is parallel to the load-bearing surface; A telescopic cylinder is provided, wherein the telescopic cylinder is horizontally positioned, the fixed end of the telescopic cylinder is mounted on the mounting surface, and the movable end is able to abut against the load-bearing surface.

2. The vehicle body testing apparatus as described in claim 1, characterized in that, The height of the first frame relative to the support frame is adjustable; or, It includes at least a first support column group and a second support column group. The first support column group includes a plurality of first support columns, and the second support column group includes a plurality of second support columns. The first support columns and the second support columns have different heights, and the first frame can be supported on the support frame by the first support column group or the second support column group.

3. The vehicle body testing apparatus as described in claim 1, characterized in that, The support frame is also fixed with an upright and a diagonal brace. The upright is vertically supported by the support frame, and the upright is further supported by the diagonal brace. An actuator is also provided on the upright for applying force to a portion of the beam on the second side of the frame assembly, wherein the first side and the second side are perpendicular.

4. The vehicle body testing apparatus as described in claim 1, characterized in that, The frame assembly includes several crossbeams and longitudinal beams, which form the main skeleton of the frame. Several supporting crossbeams and supporting longitudinal beams are also fixed inside the outer skeleton, with their ends respectively fixedly connected to the beams on opposite sides of the outer skeleton.

5. The vehicle body testing apparatus as described in any one of claims 1 to 4, characterized in that, The bottom wall of the frame assembly and the support frame are provided with a positioning post, and the other is provided with a positioning hole that cooperates with the positioning post for installation.

6. The vehicle body testing apparatus as described in any one of claims 1 to 4, characterized in that, The load-bearing beam includes simulated collision pillars and simulated corner pillars, which are used to simulate the collision pillars and corner pillars of the vehicle body, respectively. The load-bearing surface has a predetermined angle with the longitudinal surface of the frame assembly.

7. The vehicle body testing apparatus as described in claim 6, characterized in that, It also includes a middle crossbeam. Each of the same load-bearing beams includes a first segment and a second segment along the length direction. The adjacent ends of the first segment and the second segment are fixedly connected to the middle crossbeam. The load-bearing surface is located in the area between two adjacent segments of the same load-bearing beam.

8. The vehicle body testing apparatus as described in claim 6, characterized in that, The same load-bearing beam has at least two load-bearing surfaces, and at least two of the load-bearing surfaces have different angles with the longitudinal surface.

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