Test tool for fatigue strength test of rear floor

Abstract

The invention provides a test tool for a fatigue strength test of a rear floor. The test tool for the fatigue strength test of the rear floor comprises a mounting base station, the mounting base station is provided with a clamp fixing seat, the clamp fixing seat is provided with a clamping space, the clamping space is used for arranging a rear floor assembly, and the rear floor assembly is provided with a plurality of test point positions; one end of the transverse test assembly is connected with the mounting base station, and the other end of the transverse test assembly is arranged opposite to the rear floor assembly in the length direction of the clamping space; and the longitudinal testing assembly is connected with the clamp fixing seat, and the longitudinal testing assembly and the rear floor assembly are oppositely arranged in the height direction of the clamping space. The problem that the fatigue strength test cannot be carried out on the integrated rear floor in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile test, in particular to a test tool for rear floor fatigue strength test. BACKGROUND

[0002] With the rapid development of the automobile industry, the performance requirements of the integrated rear floor are continuously improved, and the fatigue strength of the integrated rear floor needs to be verified.

[0003] There is no special integrated rear floor fatigue strength test standard and tool in the prior art.

[0004] In view of the above technical problems, no effective solution has been proposed so far. SUMMARY

[0005] The main purpose of the present application is to provide a test tool for rear floor fatigue strength test, so as to solve the problem that the fatigue strength of the integrated rear floor cannot be tested in the prior art.

[0006] In order to achieve the above purpose, according to one aspect of the present application, a test tool for rear floor fatigue strength test is provided, which comprises: a mounting base, a clamp fixing seat is arranged on the mounting base, the clamp fixing seat has a clamping space, the clamping space is used to arrange a rear floor assembly, the rear floor assembly has a plurality of test points; a transverse test assembly, one end of the transverse test assembly is connected with the mounting base, along the length direction of the clamping space, the other end of the transverse test assembly is arranged opposite to the rear floor assembly, the transverse test assembly is used to test the fatigue strength of the test points in the rear floor assembly which are towards the length direction of the clamping space; a longitudinal test assembly, the longitudinal test assembly is connected with the clamp fixing seat, along the height direction of the clamping space, the longitudinal test assembly is arranged opposite to the rear floor assembly, the longitudinal test assembly is used to test the fatigue strength of the test points in the rear floor assembly which are towards the height direction of the clamping space.

[0007] Further, the transverse test assembly comprises: a support table, the support table is connected with the mounting base, the support table is arranged on one side of the clamping space, the support table is arranged towards the clamping space, and the support table is arranged opposite to the rear floor assembly; a connecting piece, one end of the connecting piece is used to connect with the rear floor assembly, the other end of the connecting piece forms a load surface, the connecting piece is connected with the load force output end of the support table, and the load surface is used to bear the test load force; wherein, at least part of the connecting piece extends along the length direction of the clamping space, and the connecting piece is used to transmit the test load force output by the transverse test assembly to the rear floor assembly along the length direction of the clamping space.

[0008] Further, the connecting piece comprises a connecting piece body, at least part of the connecting piece body extends along the length direction of the clamping space; a first connecting plate, part of the first connecting plate is connected with the connecting piece body, and another part of the first connecting plate is used for being connected with the rear floor assembly, the first connecting plate is two, and the two first connecting plates are oppositely arranged on two sides of the connecting piece body along the width direction of the clamping space; wherein a plurality of first matching holes are arranged on the connecting piece body, a plurality of first connecting holes are arranged on the first connecting plate, at least part of the first connecting holes extends along the length direction of the clamping space, and the first matching holes can be selectively matched and connected with the first connecting holes located on different length directions of the clamping space, so as to adjust the relative distance between the connecting piece body and the first connecting plate.

[0009] Further, the connecting piece further comprises a bearing rod, one end of the bearing rod is connected with the connecting piece body, and the other end of the bearing rod forms a load surface, the bearing rod is arranged on the side of the connecting piece body away from the rear floor assembly, wherein the bearing rod is oppositely arranged with the load force output end of the transverse test assembly.

[0010] Further, a plurality of reinforcing pieces are arranged on the outer circumferential surface of the bearing rod, the reinforcing pieces are connected with the bearing rod, and two adjacent reinforcing pieces are arranged at intervals along the axial direction of the bearing rod.

[0011] Further, the transverse test assembly further comprises a driving rod, one end of the driving rod is connected with the support table, and the other end of the driving rod is connected with the bearing rod, the driving rod is used for providing a test load force to the load surface; a driving piece, the driving piece is connected with at least one of the driving rod and the support table, and the driving piece is used for driving the driving rod to provide the test load force.

[0012] Further, the clamp fixing seat comprises a first fixing support, a second fixing support and a top support, the first fixing support and the second fixing support are arranged at a distance, two ends of the top support are connected with the first fixing support and the second fixing support respectively, the top support, the first fixing support, the second fixing support and the mounting base form the clamping space, and one side of the top support facing the clamping space is connected with the longitudinal test assembly.

[0013] Further, the clamp fixing seat further comprises a second connecting plate, one side of the second connecting plate is connected with any one of the first fixing support or the second fixing support, and the other side of the second connecting plate is used for being connected with the rear floor assembly, a plurality of second connecting holes are arranged on the second connecting plate, a plurality of second matching holes are arranged on the rear floor assembly, along the width direction of the clamping space, the second matching holes are oppositely arranged with at least part of the second connecting holes, and the second connecting plate is detachably connected with the rear floor assembly through the second connecting holes and the second matching holes.

[0014] Further, the clamp fixing base further comprises an adjusting plate, a plurality of through holes are formed on the adjusting plate, the through holes are arranged in correspondence with the second connecting holes, the second connecting holes are arranged in correspondence with at least part of the through holes, the adjusting plate is detachably connected with the second connecting plate and the rear floor assembly, and the adjusting plate is used for improving the connection length between the second connecting plate and the rear floor assembly.

[0015] Further, the adjusting plate is at least one, when the adjusting plate is more than two, the plurality of adjusting plates are arranged on one side of the rear floor assembly along the width direction of the clamping space, and / or the plurality of adjusting plates are arranged on both sides of the rear floor assembly along the width direction of the clamping space, and the adjacent two adjusting plates are connected through the through holes.

[0016] Further, when the adjusting plate is more than two, the thicknesses of the at least two adjusting plates are not equal.

[0017] By the technical scheme of the present application, the clamping space formed by the clamp fixing base fixes the rear floor assembly, the transverse test assembly applies a load force to the test point of the rear floor assembly 30 in the length direction of the clamping space, and the longitudinal test assembly applies a load force to the test point in the height direction of the clamping space, so that the fatigue strength verification of the rear floor assembly in different directions is realized. The test tool can adapt to a plurality of test points of the rear floor assembly, a more comprehensive test scheme is provided, the accuracy and effectiveness of the test are ensured, and thus the demand of the automobile industry for the performance verification of the integrated rear floor is met. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 A structural schematic view of a first embodiment of a test tool for rear floor fatigue strength test according to the present application is shown;

[0020] Figure 2 A structural schematic view of a second embodiment of a test tool for rear floor fatigue strength test according to the present application is shown;

[0021] Figure 3 A structural schematic view of an embodiment of a connecting piece according to the present application is shown.

[0022] Among the above drawings, the following reference signs are included:

[0023] 10, mounting base;

[0024] 20, clamp fixing seat; 200, clamping space; 21, first fixing support; 22, second fixing support; 23, top support seat; 24, second connecting plate; 240, second connecting hole;

[0025] 30, rear floor assembly;

[0026] 40, transverse test assembly; 41, support table; 42, connecting piece; 420, load surface; 421, connecting piece body; 422, first connecting plate; 423, first matching hole; 424, first connecting hole; 426, bearing rod; 427, reinforcing piece; 43, driving rod; 44, driving piece;

[0027] 50, longitudinal test assembly. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of the features, steps, operations, devices, components and / or combinations thereof.

[0030] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged as appropriate, so that the embodiments of the present application described herein can be implemented, for example, in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] Now, exemplary embodiments according to this application will be described in greater detail by referring to the drawings. These exemplary embodiments can be implemented in various different forms, and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, and in the drawings, the thickness of layers and regions can be exaggerated for clarity, and the same reference numerals are used throughout the drawings to designate the same elements, and thus a description thereof will be omitted.

[0032] In combination Figures 1 to 3 As shown, according to specific embodiments of the present application, a test tool for rear floor fatigue strength test is provided.

[0033] Specifically, as shown in Figure 1 , Figure 2 The test tool for rear floor fatigue strength test includes a mounting base 10, a transverse test assembly 40, and a longitudinal test assembly 50. The mounting base 10 is provided with a fixture fixing seat 20 having a clamping space 200 formed therein for arranging a rear floor assembly 30 having a plurality of test points. One end of the transverse test assembly 40 is connected to the mounting base 10 along the length direction of the clamping space 200, and the other end of the transverse test assembly 40 is arranged opposite to the rear floor assembly 30 along the length direction of the clamping space 200. The transverse test assembly 40 is used to perform fatigue strength test on the test points of the rear floor assembly 30 facing the length direction of the clamping space 200. The longitudinal test assembly 50 is connected to the fixture fixing seat 20 along the height direction of the clamping space 200, and is arranged opposite to the rear floor assembly 30 along the height direction of the clamping space 200. The longitudinal test assembly 50 is used to perform fatigue strength test on the test points of the rear floor assembly 30 facing the height direction of the clamping space 200.

[0034] By using the technical solution of the present embodiment, the rear floor assembly 30 is fixed in the clamping space 200 formed by the fixture fixing seat 20. The transverse test assembly 40 applies a load force to the test points of the rear floor assembly 30 along the length direction of the clamping space 200, and the longitudinal test assembly 50 applies a load force to the test points along the height direction of the clamping space 200, thereby achieving fatigue strength verification of the rear floor assembly 30 in different directions. This makes the test tool adaptable to the plurality of test points of the rear floor assembly, provides a more comprehensive test scheme, ensures the accuracy and effectiveness of the test, and thus meets the needs of the automotive industry for performance verification of the rear floor.

[0035] In the embodiment, fatigue test or strength test can be performed on different test points by the transverse test assembly 40 and the longitudinal test assembly 50, that is, the transverse test assembly 40 and the longitudinal test assembly 50 can apply a continuous load force from small to large on the test points, and the strength test results, including tensile strength, compressive strength, yield strength, etc., can be obtained by observing or measuring the force equipment to analyze the stress of the test points. The test points can also be hit by providing continuous multiple hitting forces, and the ability of the material to resist damage under repeated loads can be evaluated and obtained, which can reflect the repeated stress that the test points may encounter in the experiment.

[0036] It should be noted that the selection of the test points on the rear floor assembly 30 can be selected according to experience to select multiple points of the rear floor assembly 30 in the use process, such as points of large stress, multi-angle stress, and frequent vibration stress, etc. According to the stress characteristics of different points, it is determined whether the test points need to be subjected to fatigue test or strength test.

[0037] Specifically, the transverse test assembly 40 includes a support table 41 and a connecting piece 42, the support table 41 is connected with the mounting base 10, the support table 41 is arranged on one side of the clamping space 200, the support table 41 is arranged towards the clamping space 200, and the support table 41 is arranged opposite to the rear floor assembly 30; one end of the connecting piece 42 is used for connecting with the rear floor assembly 30, and the other end of the connecting piece 42 forms a load surface 420, the connecting piece 42 is connected with the load force output end of the support table 41, and the load surface 420 is used for bearing the test load force; wherein at least part of the connecting piece 42 extends along the length direction of the clamping space 200, and the connecting piece 42 is used for transmitting the test load force output by the transverse test assembly 40 to the rear floor assembly 30 along the length direction of the clamping space 200.

[0038] In this way, the test load force can be effectively applied to the rear floor assembly 30 in the direction, so that the transverse test assembly 40 can accurately perform fatigue strength test on the test points in the rear floor assembly 30 along the length direction of the clamping space 200, and the load surface 420 of the connecting piece 42 directly bears and transmits the test load force output by the support table 41, so that the test is more direct and effective. By adjusting the relative position of the connecting piece 42 and the support table 41, the requirements of different test points can be met, and the flexibility and application range of the test tooling are improved.

[0039] Specifically, as Figure 2As shown, the connecting piece 42 comprises a connecting piece body 421 and a first connecting plate 422, at least part of the connecting piece body 421 extends along the length direction of the clamping space 200; part of the first connecting plate 422 is connected with the connecting piece body 421, and another part of the first connecting plate 422 is used for connecting with the rear floor assembly 30, the first connecting plate 422 is two, and the two first connecting plates 422 are oppositely arranged on both sides of the connecting piece body 421 along the width direction of the clamping space 200; wherein, a plurality of first matching holes 423 are formed on the connecting piece body 421, a plurality of first connecting holes 424 are formed on the first connecting plate 422, at least part of the first connecting holes 424 extends along the length direction of the clamping space 200, and the first matching holes 423 can be selectively connected with the first connecting holes 424 located on different lengths of the clamping space 200 to adjust the relative distance between the connecting piece body 421 and the first connecting plate 422. By forming the first connecting holes 424 on the first connecting plate 422 and the plurality of first matching holes 423 on the connecting piece body 421, the first matching holes 423 can be matched with the first connecting holes 424 at different positions, thereby adjusting the relative distance between the connecting piece body 421 and the first connecting plate 422, achieving stable connection of the rear floor assembly 30 of different sizes, ensuring the stability of the rear floor assembly 30 of the tested piece during the fatigue strength test, avoiding that the rear floor assembly 30 cannot adapt to the longitudinal test assembly 50 due to size change, and improving the practicality and flexibility of the tooling.

[0040] In the embodiment, the first connecting holes 424 at the end of the first connecting plate 422 away from the connecting piece body 421 can be connected with the rear floor assembly 30, and by adjusting the connection position of the first connecting holes 424 and the rear floor assembly 30, the connecting piece 42 can be connected with different test points, that is, the adjustment of testing different test points is realized.

[0041] In an embodiment of the present application, the connecting piece 42 has adjustability in the length direction of the clamping space 200, so that the rear floor assembly 30 can be finely adjusted in the length direction or expanded in the width direction, and the test tooling can perform more accurate fatigue strength test, meet the test requirements of the complex structure of the integrated rear floor, and further ensure the accuracy and reliability of the test results.

[0042] Further, as shown, Figure 2 The connecting piece 42 further comprises a bearing rod 426, one end of the bearing rod 426 is connected with the connecting piece body 421, the other end of the bearing rod 426 forms a load surface 420, the bearing rod 426 is arranged on the side of the connecting piece body 421 away from the rear floor assembly 30, and the bearing rod 426 is oppositely arranged with the load force output end of the transverse test assembly 40.

[0043] In the embodiment, the connecting piece 42 not only includes the connecting piece body 421, but also further integrates the design of the bearing rod 426. The bearing rod 426 is accurately aligned with the load force output end of the transverse test assembly 40, and can ensure that the test load force applied by the transverse test assembly 40 is directly and effectively transmitted to the rear floor assembly 30, so as to accurately test the fatigue strength of the rear floor assembly 30 along the length direction of the clamping space 200. The bearing rod 426 can optimize the force transmission path, realize accurate guidance of the force, and improve the reliability and accuracy of the test results. In addition, the bearing rod 426 also enhances the structural stability of the entire test tooling, and ensures the safety and durability during long-time fatigue test.

[0044] Specifically, a plurality of reinforcing members 427 are arranged on the outer circumferential surface of the bearing rod 426, and the reinforcing members 427 are connected with the bearing rod 426. Adjacent two reinforcing members 427 are arranged in the axial direction of the bearing rod 426. The plurality of reinforcing members 427 are arranged on the outer circumferential surface of the bearing rod 426, and the reinforcing members 427 are connected with the bearing rod 426. Adjacent two reinforcing members 427 are arranged in the axial direction of the bearing rod 426. The structural rigidity of the bearing rod 426 is enhanced, so that the bearing rod 426 can remain stable when bearing the test load force, effectively preventing deformation or fracture of the bearing rod 426 during the fatigue strength test, and ensuring the accuracy and reliability of the test data. In addition, the interval arrangement of the reinforcing members 427 not only improves the overall bending resistance of the bearing rod, but also makes the force transmission more uniform, avoids local stress concentration, and further improves the durability and test precision of the test tooling.

[0045] Further, the transverse test assembly 40 further includes a driving rod 43 and a driving member 44. One end of the driving rod 43 is connected with the support table 41, and the other end of the driving rod 43 is connected with the bearing rod 426. The driving rod 43 is used to provide the test load force to the load surface 420. The driving member 44 is connected with at least one of the driving rod 43 and the support table 41. The driving member 44 is used to drive the driving rod 43 to provide the test load force.

[0046] In the embodiment, the driving rod 43 can transmit the test load force from the driving member 44 to the load surface 420 of the bearing rod 426. The driving member 44 is connected with at least one of the driving rod 43 and the support table 41, and is responsible for driving the driving rod 43. Through the cooperation of the driving rod 43 and the driving member 44, the uniformity and controllability of the force during the test are ensured, the accuracy and efficiency of the test are improved, and reliable technical support is provided for the comprehensive evaluation of the fatigue strength of the rear floor.

[0047] Further, the clamp fixing base 20 comprises a first fixing support 21, a second fixing support 22 and a top support base 23. The first fixing support 21 is arranged at a distance from the second fixing support 22. The two ends of the top support base 23 are connected with the first fixing support 21 and the second fixing support 22 respectively. The top support base 23, the first fixing support 21, the second fixing support 22 and the mounting base 10 surround to form a clamping space 200. The side of the top support base 23 facing the clamping space 200 is connected with the longitudinal test assembly 50. The first fixing support 21 and the second fixing support 22 are arranged opposite to each other, so that the left and right sides of the rear floor assembly 30 in the clamping space 200 can be stably clamped, avoiding displacement or vibration of the rear floor assembly 30 in the width direction during the test. The side of the top support base 23 facing the clamping space 200 is connected with the longitudinal test assembly 50, so that the test force can be applied to the rear floor assembly 30 from the vertical direction, ensuring the position of the rear floor assembly 30 stable during the transverse and longitudinal fatigue strength test, thereby improving the accuracy and reliability of the test.

[0048] In an exemplary embodiment of the present application, the longitudinal test assembly 50 is also provided with a connecting structure and a driving structure. The connecting structure is used to connect with the test point in the longitudinal direction, and the driving structure is used to drive the longitudinal test assembly 50 to test the test point. Through the cooperation of the longitudinal test assembly 50 and the transverse test assembly 40, the fatigue strength test of the test point of the rear floor assembly 30 in the transverse and longitudinal directions can be realized. The test results include all test points of the overall rear floor assembly 30, and the test results are more comprehensive.

[0049] Specifically, the clamp fixing base 20 further comprises a second connecting plate 24. One side of the second connecting plate 24 is connected with any one of the first fixing support 21 or the second fixing support 22. The other side of the second connecting plate 24 is used to connect with the rear floor assembly 30. A plurality of second connecting holes 240 are formed in the second connecting plate 24. A plurality of second matching holes are formed in the rear floor assembly 30. Along the width direction of the clamping space 200, the second matching holes are arranged opposite to at least part of the second connecting holes 240. The second connecting plate 24 is detachably connected with the rear floor assembly 30 through the second connecting holes 240 and the second matching holes.

[0050] The test tool realizes accurate fixing of the rear floor assembly 30 through the connection of the second connecting plate 24 with the rear floor assembly 30. The plurality of second connecting holes 240 provided on the second connecting plate 24 correspond to the second matching holes on the rear floor assembly 30 in the width direction of the clamping space 200, the second connecting plate 24 is connected with the rear floor assembly 30 through the second connecting holes 240, and the stability and positioning accuracy of the rear floor assembly 30 in the test process are ensured. The second connecting plate 24 is detachably connected with the rear floor assembly 30 through the second matching holes and the second connecting holes 240, which facilitates the installation and disassembly of the rear floor assembly 30, can adapt to rear floor assemblies 30 of different sizes, and improves the universality and flexibility of the test tool. In addition, through the cooperative action of the second connecting holes 240 and the second matching holes, the test force can be uniformly applied to the rear floor assembly 30, effectively avoiding test deviation caused by uneven local stress, thereby ensuring the accuracy and reliability of the fatigue strength test results.

[0051] It should be noted that through the cooperative connection of the second matching holes and the second connecting holes 240, the rear floor assembly 30 can be stably installed in the clamping space 200, ensuring the stability and repeatability in the longitudinal test.

[0052] In an embodiment of the present application, the second matching holes and the rear floor assembly 30 are detachably connected through bolts or other fixing members, which simplifies the maintenance and adjustment process of the test tool, reduces the test cost, and improves the test efficiency.

[0053] Specifically, the clamp fixing seat 20 further includes an adjusting plate, a plurality of through holes are provided on the adjusting plate, the through holes are correspondingly provided with the second connecting holes 240, and the second matching holes are correspondingly provided with at least part of the through holes. The adjusting plate is detachably connected with the second connecting plate 24 and the rear floor assembly 30, and is used to increase the connection length between the second connecting plate 24 and the rear floor assembly 30.

[0054] The plurality of through holes provided on the adjusting plate cooperate with the second connecting holes 240, which not only realizes connection, but also adjusts the relative position of the rear floor assembly 30 according to the test requirements, thereby changing the connection length. The test tool can adapt to rear floor assemblies 30 of different sizes and shapes, ensuring the stability of the connection and the accurate alignment of the test points. In addition, the detachable connection of the adjusting plate with the second connecting plate 24 and the rear floor assembly 30 facilitates the rapid adjustment and maintenance of the test tool, improves the test efficiency and the application range of the tool, and enables the rear floor assembly 30 to more accurately simulate the stress condition under actual working conditions during fatigue strength testing, thereby obtaining more reliable and comprehensive test data.

[0055] Specifically, the adjusting plate is at least one, when the adjusting plate is more than two, the plurality of adjusting plates are arranged on one side of the rear floor assembly 30 along the width direction of the clamping space 200, and / or the plurality of adjusting plates are arranged on both sides of the rear floor assembly 30 along the width direction of the clamping space 200, and the adjacent two adjusting plates are connected through the through hole. By increasing or reducing the number of adjusting plates and adjusting its position, the connection length between the rear floor assembly 30 and the clamp fixing seat 20 can be flexibly changed, and the stable position of the rear floor assembly 30 in the test process is ensured. In addition, the adjusting plate also helps to disperse the stress concentration in the loading process, improves the stability and reliability of the entire test system, so that the result of the fatigue strength test is more accurate and reliable.

[0056] Specifically, when the adjusting plate is more than two, the thickness of at least two adjusting plates is not equal.

[0057] When the adjusting plate is more than two, by arranging adjusting plates with different thicknesses in the clamping space 200 according to the size of the rear floor assembly 30, the test tool can ensure that the rear floor assembly 30 is stably and accurately positioned in the clamping space 200. The versatility and flexibility of the test tool are improved, so that the same tool can be used for fatigue strength testing of various models or rear floors, saving the cost and time of designing and manufacturing special tools for different rear floor assemblies. In addition, adjusting plates with different thicknesses can be used in combination to adapt to more diverse rear floor assembly testing requirements, further enhancing the versatility and scope of application of the test tool.

[0058] From the above description, it can be seen that the above-mentioned embodiments of the novel application achieve the following technical effects:

[0059] 1) Comprehensive fatigue strength verification: By adjusting the transverse test assembly 40 and the longitudinal test assembly 50, the fatigue strength of the rear floor in the horizontal and vertical two main directions can be tested, so that the test is more comprehensive, and the structural stability and durability in different directions are ensured.

[0060] 2) Enhanced flexibility and applicability: through the cooperation of the first connecting hole 424 and the first matching hole 423, the second connecting hole 240 and the second matching hole, and the first connecting plate 422 and the second connecting plate 24, the test tool can adapt to rear floor assemblies 30 of different sizes and structures, improving the versatility and adaptability of the test tool, and reducing the tool replacement and adjustment time when testing different vehicle rear floors.

[0061] 3) Improved test accuracy and reliability: The stable connection of the fixture fixing seat 20 with the installation base 10 and the top support seat, as well as the precise positioning between the connecting member and the rear floor assembly 30, ensures the stability of the test point during the test and the accuracy of the force, reduces the test error caused by unstable tooling or inaccurate positioning, and improves the reliability and repeatability of the test results.

[0062] 4) Optimized test efficiency: Through the optimization of the test assembly and the improvement of the connection method, the installation, fixation and test of the rear floor can be quickly and efficiently completed, reducing the test preparation time and operation complexity and improving the overall efficiency of the test.

[0063] 5) Enhanced test load force transmission: By setting the bearing rod 426 and the reinforcing member 427, it is ensured that the test load force will not be significantly attenuated or deviated during transmission, ensuring the strength and direction accuracy of the test force.

[0064] 6) Adjustable test range: By introducing the adjusting plate, the flexibility of the test is increased, making it possible to perform more accurate tests in limited space to meet the accuracy requirements under different test requirements.

[0065] For ease of description, spatial relative terms such as "on", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0066] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in the specification refer to specific features, structures or characteristics described in conjunction with the embodiment, which are included in at least one embodiment generally described in the application. The same expression appears in several places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the implementation of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present application.

[0067] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0068] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A test tool for a rear floor fatigue strength test, characterized by, The utility model relates to a kind of fatigue strength test device for rear floor assembly, including: Mounting base (10), the mounting base (10) is provided with clamp fixing seat (20), the clamp fixing seat (20) has formed clamping space (200), the clamping space (200) is used to set rear floor assembly (30), the rear floor assembly (30) has multiple test point positions; Transverse test assembly (40), one end of the transverse test assembly (40) is connected with the mounting base (10), along the length direction of the clamping space (200), the other end of the transverse test assembly (40) is oppositely arranged with the rear floor assembly (30), and the transverse test assembly (40) is used to fatigue strength test on the test point position in the rear floor assembly (30) towards the length direction of the clamping space (200); Longitudinal test assembly (50), the longitudinal test assembly (50) is connected with the clamp fixing seat (20), along the height direction of the clamping space (200), the longitudinal test assembly (50) is oppositely arranged with the rear floor assembly (30), and the longitudinal test assembly (50) is used to fatigue strength test on the test point position in the rear floor assembly (30) towards the height direction of the clamping space (200).

2. The test tool for a rear floor fatigue strength test according to claim 1, characterized by, The transverse test assembly (40) includes: Supporting table (41), the supporting table (41) is connected with the mounting base (10), the supporting table (41) is arranged at one side of the clamping space (200), the supporting table (41) is arranged towards the clamping space (200), and the supporting table (41) is oppositely arranged with the rear floor assembly (30); Connecting piece (42), one end of the connecting piece (42) is used to be connected with the rear floor assembly (30), the other end of the connecting piece (42) forms load surface (420), the connecting piece (42) is connected with the load force output end of the supporting table (41), and the load surface (420) is used to bear test load force; Wherein, at least part of the connecting piece (42) extends along the length direction of the clamping space (200), and the connecting piece (42) is used to transmit the test load force output by the transverse test assembly (40) to the rear floor assembly (30) along the length direction of the clamping space (200).

3. The test tool for a rear floor fatigue strength test according to claim 2, characterized by, The connecting piece (42) includes: Connecting piece body (421), at least part of the connecting piece body (421) extends along the length direction of the clamping space (200); First connecting plate (422), part of the first connecting plate (422) is connected with the connecting piece body (421), and another part of the first connecting plate (422) is used to be connected with the rear floor assembly (30), the first connecting plate (422) is two, and two first connecting plates (422) are oppositely arranged on both sides of the connecting piece body (421) along the width direction of the clamping space (200); The connecting member body (421) is provided with a plurality of first matching holes (423), and the first connecting plate (422) is provided with a plurality of first connecting holes (424), at least part of the first connecting holes (424) extend along the length direction of the clamping space (200), and the first matching holes (423) can be selectively matched and connected with the first connecting holes (424) located at different lengths of the clamping space (200) to adjust the relative distance between the connecting member body (421) and the first connecting plate (422).

4. The test tool for a rear floor fatigue strength test according to claim 3, characterized by, The connecting member (42) further comprises: A bearing rod (426) is connected to one end of the connecting member body (421), and the other end of the bearing rod (426) forms the load surface (420). The bearing rod (426) is arranged on the side of the connecting member body (421) away from the rear floor assembly (30), and the bearing rod (426) is arranged opposite to the load force output end of the transverse test assembly (40).

5. The test tool for a rear floor fatigue strength test according to claim 4, characterized by, A plurality of reinforcing members (427) are arranged on the outer circumferential surface of the bearing rod (426), and the reinforcing members (427) are connected to the bearing rod (426). Adjacent two reinforcing members (427) are arranged in the axial direction of the bearing rod (426).

6. The test tool for a rear floor fatigue strength test according to claim 4 or 5, characterized by, The transverse test assembly (40) further comprises: A driving rod (43) is connected to one end of the support table (41), and the other end of the driving rod (43) is connected to the bearing rod (426). The driving rod (43) is used to provide the test load force to the load surface (420). A driving member (44) is connected to at least one of the driving rod (43) and the support table (41). The driving member (44) is used to drive the driving rod (43) to provide the test load force.

7. The test tool for a rear floor fatigue strength test according to any one of claims 1 to 5, characterized in that, The fixture fixing seat (20) comprises a first fixed support (21), a second fixed support (22) and a top support seat (23). The first fixed support (21) is arranged at a distance from the second fixed support (22). The two ends of the top support seat (23) are respectively connected to the first fixed support (21) and the second fixed support (22). The top support seat (23), the first fixed support (21), the second fixed support (22) and the mounting base (10) form the clamping space (200). The side of the top support seat (23) facing the clamping space (200) is connected to the longitudinal test assembly (50).

8. The test tool for a rear floor fatigue strength test according to claim 7, characterized by, The clamp fixing base (20) further comprises a second connecting plate (24), one side of the second connecting plate (24) is connected with any one of the first fixing support (21) or the second fixing support (22), the other side of the second connecting plate (24) is used for connecting with the rear floor assembly (30), a plurality of second connecting holes (240) are formed in the second connecting plate (24), a plurality of second matching holes are formed in the rear floor assembly (30), along the width direction of the clamping space (200), the second matching holes are oppositely arranged with at least part of the second connecting holes (240), and the second connecting plate (24) is detachably connected with the rear floor assembly (30) through the second connecting holes (240) and the second matching holes.

9. The test tool for a rear floor fatigue strength test according to claim 8, characterized by, The clamp fixing base (20) further comprises an adjusting plate, a plurality of through holes are formed in the adjusting plate, the through holes are correspondingly arranged with the second connecting holes (240), the second matching holes are correspondingly arranged with at least part of the through holes, and the adjusting plate is detachably connected with the second connecting plate (24) and the rear floor assembly (30); the adjusting plate is used for increasing the connecting length between the second connecting plate (24) and the rear floor assembly (30).

10. The test tool for a rear floor fatigue strength test according to claim 9, characterized by, The adjusting plate is at least one, when the adjusting plate is more than two, a plurality of the adjusting plates are arranged on one side of the rear floor assembly (30) along the width direction of the clamping space (200), and / or a plurality of the adjusting plates are arranged on both sides of the rear floor assembly (30) along the width direction of the clamping space (200), and adjacent two adjusting plates are connected through the through holes.

11. The test tool for a rear floor fatigue strength test according to claim 10, characterized by, When the adjusting plate is more than two, the thicknesses of at least two adjusting plates are not equal.

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