Testing device for vehicle back door frame
By designing a test device for vehicle back door frames, the problem that traditional testing methods cannot effectively test the torsion mode of hatchback door frames is solved, and the accurate test of the torsion stiffness of the back door frames is achieved.
Patent Information
- Application Number
- CN202421498123.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The traditional white body torsion stiffness test cannot effectively test the torsional mode of the hatchback door frame, resulting in the torsional stiffness change not obvious when the torsional mode changes greatly.
A test device for vehicle back door frame is designed, including a base, a bracket, a torsion mechanism and a loading device. The vehicle back door frame is fixed by a torsion mechanism, and the torsion mechanism is driven to rotate through the loading device to drive the back door frame to rotate relative to the body body, realizing the test of the torsion stiffness of the back door frame.
The test device can complete the torsional stiffness test of the vehicle back door frame without applying load left and right to left to the front suspension of the white body, improving the accuracy and efficiency of the test.
Smart Images
Figure CN222652592U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of automobile equipment, and in particular relates to a testing device for a vehicle rear door frame. Background Art
[0002] Body stiffness refers to the ability of the vehicle body to resist deformation when it is subjected to general external forces that will not damage the body during driving. Traditional body static stiffness mainly includes bending stiffness and torsional stiffness, which is referred to as body bending-torsional stiffness.
[0003] The traditional body-in-white torsional stiffness test is to constrain the rear suspension, then apply loads up and down to the front suspension, and test the deformation of the longitudinal beam. However, the torsional mode vibration of the hatchback body is mainly concentrated in the back door frame of the body. When the torsional mode of the hatchback body is tested using the traditional body-in-white torsional stiffness test, it is found that when the torsional mode changes greatly, the torsional stiffness does not change significantly. Therefore, a new test device is needed to test the torsional stiffness of the back door frame. Utility Model Content
[0004] The purpose of the present application is to provide a testing device for a vehicle trunk door frame. Compared with the traditional body-in-white torsional stiffness test, the testing device for the vehicle trunk door frame can complete the torsional stiffness test of the vehicle trunk door frame without applying up and down loads to the left and right front suspension of the body-in-white.
[0005] The first aspect of the present application discloses a testing device for a vehicle rear door frame, comprising: a base, a bracket, a torsion mechanism and a loading device; the bracket is connected to the base; the torsion mechanism is rotatably connected to the bracket, and the torsion mechanism is used to fix the vehicle rear door frame; one end of the loading device is connected to the base, and the other end of the loading device is connected to the torsion mechanism, so as to drive the torsion mechanism.
[0006] In an exemplary embodiment of the present application, the torsion mechanism includes a torsion plate, a first arm and a second arm, one end of the first arm is used to connect to one side of the two opposite sides of the vehicle rear door frame, one end of the second arm is used to connect to the other side of the two opposite sides of the vehicle rear door frame, the other end of the first arm and the other end of the second arm are both connected to the torsion plate, and the torsion plate is rotatably connected to the bracket.
[0007] In an exemplary embodiment of the present application, the torsion mechanism further includes a third arm, and an area enclosed by the first arm, the second arm, and the third arm is in the shape of a triangle.
[0008] In an exemplary embodiment of the present application, the torsion disk includes a disk body and a connecting shaft, the connecting shaft is connected to the disk body, the connecting shaft is located on one side of the disk body along the axial direction of the disk body, and is arranged corresponding to the center of the disk body; the bracket is provided with an axial hole, the connecting shaft is passed through the axial hole, and is connected to the hole wall of the axial hole.
[0009] In an exemplary embodiment of the present application, the bracket includes a first support portion, a middle cross beam and a second support portion, and the middle cross beam can be adjustably connected to the first support portion and the second support portion to adjust the height of the middle cross beam relative to the first support portion and / or the second support portion; wherein the axial hole is located in the middle cross beam.
[0010] In an exemplary embodiment of the present application, the testing device for the vehicle rear door frame further includes an angle sensor, which is connected to the middle cross beam and is used to measure the rotation angle of the torsion plate.
[0011] In an exemplary embodiment of the present application, the loading device includes a hydraulic telescopic rod and a mounting seat, the hydraulic telescopic rod is rotatably connected to the mounting seat, the hydraulic telescopic rod is connected to the torsion mechanism, and the mounting seat is connected to the base.
[0012] In an exemplary embodiment of the present application, the vehicle rear door frame testing device further includes a load sensor, which is connected to the base and connected to the loading device to measure the tension or thrust of the loading device.
[0013] In an exemplary embodiment of the present application, the testing device for the vehicle rear door frame further includes a restraining device, one end of which is connected to the base, and the other end of which is used to connect to the body of the vehicle to fix the body of the vehicle.
[0014] In an exemplary embodiment of the present application, the base is provided with a sliding groove, and the restraint device includes a first restraint portion and a second restraint portion, and the first restraint portion and the second restraint portion are both slidably connected to the sliding groove to adjust the distance between the first restraint portion and the second restraint portion, or to adjust the distance between the first restraint portion and the second restraint portion relative to the bracket.
[0015] This application scheme has the following beneficial effects:
[0016] In an embodiment of the present application, when the vehicle rear door frame is undergoing a torsion test, the vehicle rear door frame can be fixed by a torsion mechanism, and then the torsion mechanism can be driven to rotate by a loading device, so as to drive the vehicle rear door frame to rotate relative to the vehicle body, thereby causing the vehicle rear door frame to undergo a certain torsional deformation. Finally, compared with the traditional body-in-white torsional stiffness test, the vehicle rear door frame test device can complete the torsional stiffness test of the vehicle rear door frame without applying up and down loads to the left and right front suspension of the body-in-white.
[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. Among them, the drawings here are used to represent the utility model concept of the present application, and are not completely equivalent to the structure of the actual product protected by the present application.
[0019] Figure 1 A schematic diagram of a three-dimensional structure in which a vehicle tailgate frame testing device in an embodiment of the present application is connected to the vehicle tailgate frame is shown.
[0020] Figure 2 A schematic diagram of the three-dimensional structure of a vehicle rear door frame testing device in an embodiment of the present application is shown.
[0021] Figure 3 A front view structural schematic diagram of a vehicle rear door frame testing device in an embodiment of the present application is shown.
[0022] Figure 4 A left-side structural schematic diagram of a vehicle rear door frame testing device in an embodiment of the present application is shown.
[0023] Figure 5 A front view structural schematic diagram of the loading device in an embodiment of the present application is shown.
[0024] Figure 6 A left-side structural schematic diagram of the loading device in an embodiment of the present application is shown.
[0025] Figure 7 A schematic diagram of the three-dimensional structure of the middle cross beam in an embodiment of the present application is shown.
[0026] Description of reference numerals:
[0027] 1. Base; 2. Bracket; 201. Axis hole; 21. First pillar portion; 22. Middle cross beam; 221. Connecting portion; 222. Axis hole portion; 23. Second pillar portion; 3. Torsion mechanism; 31. Torsion disk; 31a. Disk body; 31b. Connecting shaft; 32. First arm; 33. Second arm; 34. Third arm; 4. Loading device; 41. Hydraulic telescopic rod; 42. Mounting seat; 5. Angle sensor; 6. Load sensor; 7. Restraint device; 71. First restraint portion; 72. Second restraint portion; 8. Vehicle rear door frame. DETAILED DESCRIPTION
[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.
[0029] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.
[0030] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.
[0031] like Figures 1 to 7 As shown, the present embodiment provides a testing device for a vehicle trunk door frame, comprising: a base 1, a bracket 2, a torsion mechanism 3 and a loading device 4, wherein the bracket 2 is connected to the base 1; the torsion mechanism 3 is rotatably connected to the bracket 2, the torsion mechanism 3 is used to fix the vehicle trunk door frame 8, and after fixing the vehicle trunk door frame 8, exerts a force on the vehicle trunk door frame 8, so that the vehicle trunk door frame 8 undergoes a certain torsional deformation after rotating relative to the vehicle body; one end of the loading device 4 is connected to the base 1, and the other end of the loading device 4 is connected to the torsion mechanism 3, so as to drive the torsion mechanism 3.
[0032] In this embodiment, when the vehicle tailgate frame 8 is undergoing a torsion test, the vehicle tailgate frame 8 can be fixed by the torsion mechanism 3, and then the torsion mechanism 3 can be driven to rotate by the loading device 4, so as to drive the vehicle tailgate frame 8 to rotate relative to the vehicle body, thereby causing the vehicle tailgate frame 8 to undergo a certain torsional deformation. Finally, compared with the traditional body-in-white torsional stiffness test, the vehicle tailgate frame test device can complete the torsional stiffness test of the vehicle tailgate frame 8 without applying up and down loads to the left and right front suspension of the body-in-white.
[0033] It should be understood that when testing the torsional stiffness of the vehicle tailgate frame 8 , the vehicle tailgate frame 8 must first be fixed, and then a certain force is applied to the vehicle tailgate frame 8 through the loading device 4 to achieve the torsional stiffness test of the vehicle tailgate frame 8 .
[0034] Combination Figure 1 As shown, the torsion mechanism 3 includes a torsion plate 31, a first arm 32 and a second arm 33, one end of the first arm 32 is used to connect with one side of two opposite sides of the vehicle rear door frame 8 (for example, the upper side along the height direction of the vehicle body), and one end of the second arm 33 is used to connect with the other side of two opposite sides of the vehicle rear door frame 8 (for example, the lower side along the height direction of the vehicle body), the other end of the first arm 32 and the other end of the second arm 33 are both connected to the torsion plate 31, and the torsion plate 31 is rotatably connected to the bracket 2.
[0035] It should be understood that the torsion plate 31 applies torsional force to two opposite sides of the vehicle tailgate frame 8 through the first arm 32 and the second arm 33. Compared with applying torsional force to one side of the vehicle tailgate frame 8, it can better drive the vehicle tailgate frame 8 to rotate relative to the vehicle body, so as to better cause the vehicle tailgate frame 8 to undergo certain torsional deformation.
[0036] In this embodiment, the specific manner in which the first arm 32 and the second arm 33 fix the vehicle tailgate frame 8 on the testing device of the vehicle tailgate frame is as follows: one end of the first arm 32 is connected to the hinge of the vehicle tailgate frame 8, and the other end is connected to the torsion plate 31; one end of the second arm 33 is connected to the installation position of the lock of the vehicle tailgate frame 8, and the other end is connected to the torsion plate 31.
[0037] It should be understood that the positions of the first arm 32 and the second arm 33 on the torsion plate 31 can be adjusted according to the specific model of the vehicle, so that the testing device of the vehicle rear door frame can test the torsional stiffness of the vehicle rear door frames 8 of different models, thereby improving the universal applicability of the testing device of the vehicle rear door frame.
[0038] For example, by increasing or decreasing the distance between the first support arm 32 and the second support arm 33 , the vehicle tailgate frames 8 of different sizes can be adapted.
[0039] Combination Figure 4 As shown, the torsion mechanism 3 further includes a third arm 34 , and the area surrounded by the first arm 32 , the second arm 33 and the third arm 34 is in the shape of a triangle.
[0040] In this embodiment, the first arm 32 and the third arm 34 are both located in the upper area of the torsion plate 31 along the height direction of the vehicle body, and are both connected to the hinge of the vehicle back door frame 8, wherein the first arm 32 and the third arm 34 are located on the same horizontal line. The second arm 33 is located in the lower area of the torsion plate 31 along the height direction of the vehicle body, and is connected to the installation position of the lock of the vehicle back door frame 8, and is arranged corresponding to the middle area between the first arm 32 and the third arm 34.
[0041] It should be understood that the area enclosed by the first arm 32, the second arm 33 and the third arm 34 is triangular, and since the triangular structure is more stable than other structures (such as a quadrilateral structure), the connection between the torsion mechanism 3 and the vehicle rear door frame 8 can be made more stable.
[0042] Combination Figure 1 and Figure 7 As shown, the bracket 2 includes a first support portion 21, an intermediate cross beam 22 and a second support portion 23. The intermediate cross beam 22 is adjustably connected between the first support portion 21 and the second support portion 23 to adjust the height of the intermediate cross beam 22 relative to the first support portion 21 or the second support portion 23; wherein the axial hole 201 is located at the intermediate cross beam 22.
[0043] Combination Figure 3 , Figure 4 and Figure 7 As shown, the torsion disk 31 includes a disk body 31a and a connecting shaft 31b, the connecting shaft 31b is connected to the disk body 31a, and the connecting shaft 31b is located along the axial direction of the disk body 31a on the side of the disk body 31a away from the first arm 32 and the second arm 33, and is arranged corresponding to the center of the disk body 31a; the middle cross beam 22 of the bracket 2 is provided with an axial hole 201, the connecting shaft 31b is passed through the axial hole 201, and is rotatably connected to the middle cross beam 22.
[0044] It should be understood that the connecting shaft 31b is arranged corresponding to the center of the disk body 31a, that is, the center of the disk body 31a coincides with the axis of rotation of the disk body 31a.
[0045] In this embodiment, the disk body 31a is in the shape of a disk. In other embodiments, the disk body 31a may be in a rectangular shape or the like, in which case the connecting shaft 31b is arranged corresponding to the rotation center of the disk body 31a.
[0046] In this embodiment, the connecting shaft 31b is passed through the shaft hole 201 and is rotatably connected to the middle cross beam 22. The disk body 31a is connected to the loading device 4, so that when the disk body 31a applies a certain pulling force or pushing force to the loading device 4, the disk body 31a can rotate clockwise or counterclockwise around the axis of the shaft hole 201, thereby achieving the purpose of the loading device 4 to apply torsional loading to the vehicle rear door frame 8.
[0047] It should be understood that after the connecting shaft 31b is rotationally connected to the middle cross beam 22, the disk body 31a may move axially along the shaft hole 201 and affect the normal operation of the test. Therefore, the torsion disk 31 or the bracket 2 should be provided with a limiting structure so that the torsion disk 31 can only rotate in the counterclockwise direction or the clockwise direction to prevent the torsion disk 31 from moving axially along the shaft hole 201.
[0048] In this embodiment, the middle cross beam 22 includes a connecting portion 221 and an axial hole portion 222. The axial hole portion 222 is provided in the connecting portion 221. The axial hole portion 222 is provided with an axial hole 201. The connecting shaft 31b is provided in the axial hole 201. The connecting portion 221 is connected between the first support portion 21 and the second support portion 23. By adjusting the height of the connecting portion 221 relative to the first support portion 21 and / or the second support portion 23, the height of the axial hole 201 relative to the first support portion 21 and / or the second support portion 23 is adjusted, and finally the purpose of adjusting the axis of the torsion plate 31 is achieved.
[0049] For example, the connecting part 221 can be connected between the first support part 21 and the second support part 23 through a slide rail assembly, and the slide rail assembly is extended along the height direction of the first support part 21 and the second support part 23 to enable the connecting part 221 to slide up and down in the height direction of the first support part 21 and the second support part 23.
[0050] In addition, the bracket 2 further includes a locking mechanism, which is connected to the second support portion 23, and is used to lock the connecting portion 221 between the first support portion 21 and the second support portion 23. After adjusting the height of the intermediate crossbeam 22 relative to the first support portion 21 and / or the second support portion 23, the connecting portion 221 is locked between the first support portion 21 and the second support portion 23 by the locking mechanism, so as to ensure the stability of the connection between the connecting portion 221 and the first support portion 21 and the second support portion 23, and further ensure the stability of the connection between the disk body 31a and the intermediate crossbeam 22, so as to avoid affecting the normal rotation of the disk body 31a.
[0051] In other embodiments, the locking mechanism may also be connected to the first support portion 21 , so that the connecting portion 221 can be locked between the first support portion 21 and the second support portion 23 .
[0052] Combination Figure 1As shown, the vehicle rear door frame test device further includes an angle sensor 5 , which is connected to the connecting portion 221 , and is used to measure the rotation angle of the disc 31 a .
[0053] In this embodiment, when the disc 31 a is subjected to the pulling force or pushing force of the loading device 4 , the disc 31 a will rotate, and the angle sensor 5 will measure the rotation angle of the disc 31 a to calculate the torsional stiffness of the vehicle rear door frame 8 .
[0054] It should be understood that before the disk 31a starts to rotate, it should be ensured that the distance between the center of the disk 31a and the base 1 is equal to the distance between the connection position between the loading device 4 and the disk 31a and the base 1, that is, the center of the disk 31a and the connection position between the loading device 4 and the disk 31a are located on the same horizontal plane.
[0055] Combination Figure 3 , Figure 5 and Figure 6 As shown, the loading device 4 includes a hydraulic telescopic rod 41 and a mounting seat 42 , the hydraulic telescopic rod 41 is rotatably connected to the mounting seat 42 , the hydraulic telescopic rod 41 is connected to the disc body 31 a , and the mounting seat 42 is connected to the base 1 .
[0056] In this embodiment, when testing the torsional rigidity of the vehicle back door frame 8, the hydraulic telescopic rod 41 of the loading device 4 applies a certain pulling force or pushing force to the disc 31a, so that the disc 31a can rotate in a clockwise or counterclockwise direction. In the process of driving the disc 31a to rotate, one end of the hydraulic telescopic rod 41 is limited by the disc 31a, so that the other end of the hydraulic telescopic rod 41 rotates around the mounting seat 42.
[0057] For example, the hydraulic telescopic rod 41 includes an outer rod and an inner rod. The inner rod is inserted into the outer rod and can be telescoped relative to the outer rod. One end of the inner rod is connected to the disc 31a, and the outer rod is rotatably connected to the mounting seat 42.
[0058] It should be understood that when the inner rod portion of the hydraulic telescopic rod 41 first applies a certain pulling force or pushing force to the disk body 31a, the disk body 31a begins to rotate in a clockwise direction or a counterclockwise direction. As the disk body 31a rotates, the outer rod portion of the hydraulic telescopic rod 41 will rotate relative to the mounting seat 42 as the disk body 31a rotates, thereby adapting to the movement trajectory of the disk body 31a, thereby avoiding deformation or even damage of the hydraulic telescopic rod 41 of the loading device 4, which is beneficial to extending the service life of the loading device 4.
[0059] In this embodiment, combined with Figure 1 and Figure 3As shown, the vehicle back door frame test device further includes a load sensor 6, which is connected to the base 1 and connected to the loading device 4, so as to measure the tension or thrust of the loading device 4. When the loading device 4 applies a certain tension or thrust to the plate 31a, the load sensor 6 connected to the base 1 will measure the magnitude of the tension or thrust applied by the loading device 4, so as to calculate the torsional stiffness of the vehicle back door frame 8.
[0060] Combination Figure 1 As shown, the vehicle rear door frame test device further includes a restraint device 7, one end of the restraint device 7 is connected to the base 1, and the other end of the restraint device 7 is used to connect to the vehicle body to fix the vehicle body.
[0061] In this embodiment, the restraint device 7 is connected between the base 1 and the vehicle body, and the vehicle body is fixed to the base 1 through the restraint device 7, ensuring that the loading device 4 only applies tension or thrust to the vehicle rear door frame 8 during the test, so as to ensure the normal progress of the torsion test of the vehicle rear door frame 8.
[0062] It should be understood that the vehicle tailgate frame 8 is part of the vehicle body, and the vehicle body can be fixed by the restraint device 7. When the hydraulic telescopic rod 41 drives the disc 31a to rotate, the vehicle tailgate frame 8 can rotate relative to the vehicle body, thereby causing the vehicle tailgate frame 8 to undergo a certain torsional deformation, so as to test the torsional stiffness of the vehicle tailgate frame 8.
[0063] Combination Figure 1 As shown, the base 1 is provided with a sliding groove, and the restraint device 7 includes a first restraint portion 71 and a second restraint portion 72. The first restraint portion 71 and the second restraint portion 72 are both slidably connected to the sliding groove to adjust the distance between the first restraint portion 71 and the second restraint portion 72, or to adjust the distance between the first restraint portion 71 and the second restraint portion 72 relative to the bracket 2.
[0064] For example, when the extending direction of the sliding groove is from the first constraint part 71 to the second constraint part 72, after the first constraint part 71 and the second constraint part 72 are both arranged in the sliding groove, sliding the first constraint part 71 and the second constraint part 72 toward each other can reduce the distance between the first constraint part 71 and the second constraint part 72, otherwise the distance between the first constraint part 71 and the second constraint part 72 is increased. When there are two sliding grooves, the extending directions of the two sliding grooves correspond from the first constraint part 71 and the second constraint part 72 toward the bracket 2, and after the first constraint part 71 and the second constraint part 72 are arranged in the corresponding sliding grooves one by one, sliding the first constraint part 71 and the second constraint part 72 toward the bracket 2 can reduce the distance between the first constraint part 71 and the second constraint part 72 relative to the bracket 2, otherwise the distance between the first constraint part 71 and the second constraint part 72 relative to the bracket 2 is increased.
[0065] In this embodiment, the base 1 is provided with a sliding groove, and the first constraint part 71 and the second constraint part 72 are both connected to the sliding groove. After the first constraint part 71 and the second constraint part 72 slide to a suitable position in the sliding groove, they are positioned on the base 1 by bolts, so that the first constraint part 71 and the second constraint part 72 are connected to the vehicle body. Before installing the torsional stiffness of the back door frame 8 of the test vehicle, after removing the bolts, the distance between the first constraint part 71 and the second constraint part 72 can be adjusted on the base 1 according to the wheelbase of the specific vehicle model, or the distance between the first constraint part 71 and the second constraint part 72 relative to the bracket 2 can be adjusted according to the wheelbase of the specific vehicle model, and then the first constraint part 71 and the second constraint part 72 are positioned on the base 1 by bolts, so as to improve the universal applicability of the test device for the back door frame of the vehicle.
[0066] In addition, before installing the torsional stiffness of the test vehicle's tailgate frame 8, the height difference between the top ends of the first restraint portion 71 and the second restraint portion 72 relative to the middle cross beam 22 of the bracket 2 can be adjusted according to the height difference between the front suspension and the rear suspension of the specific vehicle model, thereby improving the universal applicability of the test device for the vehicle's tailgate frame.
[0067] In this embodiment, the distance between the center of the disk 31a and the connection position between the loading device 4 and the disk 31a is L; the rotation angle of the disk 31a measured by the angle sensor 5 is θ; the tension or thrust of the loading device 4 measured by the load sensor 6 is F. The torsional stiffness of the vehicle back door frame 8 is K, and the relationship to be satisfied is
[0068] In summary, when the vehicle back door frame test device tests the torsional stiffness of the vehicle back door frame 8, first, the distance between the first constraint part 71 and the second constraint part 72 is adjusted according to the wheelbase of the specific vehicle model, the distance between the first constraint part 71 and the second constraint part 72 relative to the bracket 2 is adjusted according to the wheelbase of the specific vehicle model, and the height difference between the top ends of the first constraint part 71 and the second constraint part 72 relative to the middle cross beam 22 of the bracket 2 is adjusted according to the height difference between the front suspension and the rear suspension of the specific vehicle model, so as to ensure that the vehicle body can be fixedly connected to the vehicle back door frame test device; secondly, the positions of the first support arm 32 and the second support arm 33 on the disc 31a are adjusted according to the specific vehicle model to ensure the connection between the vehicle back door frame 8 and the first support arm 32 and the second support arm 33; finally, a certain pulling force or thrust is applied to the disc 31a through the hydraulic telescopic rod 41 to drive the disc 31a to rotate, so that the vehicle back door frame 8 produces a certain torsional deformation relative to the vehicle body, and finally the torsional stiffness of the vehicle back door frame 8 is tested.
[0069] It should be understood that the vehicle tailgate frame testing device can test the torsional stiffness of the vehicle tailgate frame 8 repeatedly to ensure that the test result is more accurate.
[0070] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined. And the description of the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application.
[0072] The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradicting each other.
[0073] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made according to the claims and description of the present application should fall within the scope of the patent of this application.
Claims
1. A vehicle back door frame testing device, characterized in that: include: Base; A bracket connected to the base; A torsion mechanism, the torsion mechanism is rotatably connected to the bracket, and the torsion mechanism is used to fix the vehicle back door frame; A loading device, one end of which is connected to the base, and the other end of which is connected to the torsion mechanism, so as to drive the torsion mechanism.
2. The vehicle back door frame testing device according to claim 1, characterized in that: The torsion mechanism includes a torsion plate, a first arm and a second arm, one end of the first arm is used to connect to one side of the two opposite sides of the vehicle rear door frame, one end of the second arm is used to connect to the other side of the two opposite sides of the vehicle rear door frame, the other end of the first arm and the other end of the second arm are both connected to the torsion plate, and the torsion plate is rotatably connected to the bracket.
3. The vehicle back door frame testing device according to claim 2, characterized in that: The torsion mechanism further includes a third arm, and an area surrounded by the first arm, the second arm and the third arm is in the shape of a triangle.
4. The vehicle back door frame testing device according to claim 2, characterized in that: The torsion plate comprises a plate body and a connecting shaft, wherein the connecting shaft is connected to the plate body, and the connecting shaft is located at one side of the plate body along the axial direction of the plate body and is arranged corresponding to the center of the plate body; The bracket is provided with an axial hole, and the connecting shaft is passed through the axial hole and connected with the hole wall of the axial hole.
5. The vehicle back door frame testing device according to claim 4, characterized in that: The bracket includes a first support part, an intermediate crossbeam and a second support part, wherein the intermediate crossbeam is adjustably connected to the first support part and the second support part to adjust the height of the intermediate crossbeam relative to the first support part and / or the second support part; wherein, The shaft hole is located at the middle cross beam.
6. The vehicle back door frame testing device according to claim 5, characterized in that: The vehicle rear door frame testing device further comprises an angle sensor, which is connected to the middle cross beam and is used to measure the rotation angle of the torsion plate.
7. The vehicle back door frame testing device according to claim 1, characterized in that: The loading device comprises a hydraulic telescopic rod and a mounting seat, wherein the hydraulic telescopic rod is rotatably connected to the mounting seat, the hydraulic telescopic rod is connected to the torsion mechanism, and the mounting seat is connected to the base.
8. The vehicle back door frame testing device according to claim 1, characterized in that: The vehicle rear door frame testing device further comprises a load sensor, wherein the load sensor is connected to the base, and the load sensor is connected to the loading device to measure the pulling force or pushing force of the loading device.
9. The vehicle back door frame testing device according to claim 1, characterized in that: The vehicle rear door frame testing device further comprises a restraining device, one end of which is connected to the base, and the other end of which is used to be connected to the vehicle body to fix the vehicle body.
10. The vehicle back door frame testing device according to claim 9, characterized in that: The base is provided with a sliding groove, and the restraint device includes a first restraint part and a second restraint part. The first restraint part and the second restraint part are both slidably connected to the sliding groove to adjust the distance between the first restraint part and the second restraint part, or to adjust the distance between the first restraint part and the second restraint part relative to the bracket.