Test device and test system

Abstract

The embodiment of the present application provides a kind of test device and test system, the test device includes test component, test component includes bottom plate and to be connected plate, to be connected plate extends along first direction and includes first plate and second plate, first plate is located in the thickness direction of bottom plate one side and is spaced apart from bottom plate, second plate is two, respectively connects in the two ends of first plate along second direction, two second plates are located in the side of first plate towards bottom plate and is perpendicular to first plate, the side of two second plates away from each other has flanging, flanging is suitable for with bottom plate and is connected with the fit;Clamp, clamp is two, two clamps are respectively connected to the side of two second plates away from each other, for stretching to be connected plate. According to the test device provided by the present application, on the one hand, it is more in line with the actual shape of the components on the vehicle and the connection mode and process scene, on the other hand, when the test component is tested, it can be in a complex stress situation, so that the test result is more in line with the real working condition.

Description

Technical Field

[0001] This application relates to the field of vehicle testing technology, and more particularly to a testing device and a testing system. Background Technology

[0002] In traditional welding processes, fatigue performance tests of weld joints are mostly conducted under single mechanical load modes, such as tensile shear, peeling, and cross tensile tests. These tests lack simulation of multi-point collaborative failure behavior under actual working conditions, lack sufficient flexibility, and cannot meet the fatigue testing requirements of complex loading paths or the needs of real-world usage environments. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a testing device that better reflects real-world working conditions, making the test results more consistent with actual working conditions and thus more accurate.

[0004] This application also proposes a testing system, including the testing apparatus described above.

[0005] The testing apparatus according to an embodiment of this application includes: a testing component comprising a base plate and a plate to be connected, the plate to be connected extending along a first direction and comprising a first plate and a second plate, the first plate being located on one side of the base plate in the thickness direction and spaced apart from the base plate, and two second plates respectively connected to both ends of the first plate along a second direction, both second plates being located on the side of the first plate facing the base plate, and the sides of the two second plates opposite to each other having flanges adapted to fit and connect with the base plate, the first direction, the second direction and the thickness direction of the base plate being mutually perpendicular, and the first plate and the second plate being an integral piece; and two clamping members respectively connected to the sides of the two second plates opposite to each other, for stretching the plate to be connected.

[0006] According to the testing device of this application embodiment, a first plate is located on one side of the base plate in the thickness direction and spaced apart from the base plate. Two second plates are respectively connected to the two ends of the first plate along the second direction. Both second plates are located on the side of the first plate facing the base plate and perpendicular to the first plate. The side of the two second plates opposite to each other has a flange, which is suitable for fitting and connecting with the base plate. Two clamping members are respectively connected to the side of the two second plates opposite to each other and are used to stretch the plate to be connected. On the one hand, the plate to be connected forms a "Z"-shaped structure, which is more in line with the actual shape of the components on the vehicle, as well as the connection method and process scenario. On the other hand, it makes the plate to be connected form a cantilever structure, which can be subjected to complex stress conditions when the test component is tested, which can better reflect the real working conditions, making the test results more in line with the real working conditions and making the test results more accurate.

[0007] In some embodiments of this application, the testing apparatus further includes: two reinforcing members, each of which is connected to one side of the two second plates facing each other, and a portion of the reinforcing member extends to the side of the first plate facing the base plate.

[0008] In some embodiments of this application, the reinforcing member, the clamping member, and the second plate are connected by a first fastener.

[0009] In some embodiments of this application, the reinforcing member and the second plate are further connected by a second fastener, wherein the first fastener and the second fastener are disposed opposite to each other and spaced apart along the thickness direction of the base plate, and the first fastener is located on the side of the second fastener facing the flange.

[0010] In some embodiments of this application, the two clamping members are symmetrically arranged, and the plane of symmetry of the two clamping members is perpendicular to the second direction.

[0011] In some embodiments of this application, the clamping member has a protrusion on the side facing the second plate, the protrusion being for connecting with the second plate, and the protrusion being a plurality of protrusions evenly spaced along the first direction.

[0012] In some embodiments of this application, the base plate and the flange are welded and bonded.

[0013] In some embodiments of this application, the clamping member is spaced apart from the flange in the thickness direction of the base plate.

[0014] In some embodiments of this application, in the thickness direction of the base plate, the distance between the clamping member and the flange is H1, and the distance between the first plate and the flange is H2, where 1 / 3 ≤ H1 / H2 ≤ 1 / 2.

[0015] The test system according to the embodiments of this application includes the test apparatus described above.

[0016] According to the test system of this application embodiment, by setting the above-mentioned test device, the first plate is located on one side of the thickness direction of the base plate and spaced apart from the base plate. There are two second plates, which are respectively connected to the two ends of the first plate along the second direction. The two second plates are both located on the side of the first plate facing the base plate and perpendicular to the first plate. The side of the two second plates away from each other has a flange, which is suitable for fitting and connecting with the base plate. Two clamping members are respectively connected to the side of the two second plates away from each other and are used to stretch the plate to be connected. On the one hand, the plate to be connected forms a Z-shaped structure, which is more in line with the actual shape of the components on the vehicle and the connection method and process scenario. On the other hand, it makes the plate to be connected form a cantilever structure, which can be in a complex stress situation when the test component is tested, which can better reflect the real working conditions, making the test results more in line with the real working conditions and making the test results more accurate.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of a test apparatus according to an embodiment of this application.

[0019] Figure label: 10. Testing equipment; 1. Test component; 11. Base plate; 12. Board to be connected; 121. First board; 122. Second board; 123. Flanged edge; 2. Clamping component; 21. First fastener; 22. Second fastener; 23. Protrusion; 3. Strengthen the components. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] The following is for reference. Figure 1 The test apparatus 10 according to an embodiment of this application is described.

[0022] like Figure 1 As shown, the testing apparatus 10 according to an embodiment of this application includes: a testing component 1 and a clamping member 2.

[0023] Specifically, refer to Figure 1The test component 1 includes a base plate 11 and a plate to be connected 12, the plate to be connected 12 being connected along a first direction (e.g., Figure 1 Extending in the direction shown (a), and including a first plate 121 and a second plate 122, the first plate 121 is located on one side of the thickness direction of the base plate 11 and spaced apart from the base plate 11, and there are two second plates 122, which are respectively connected to the first plate 121 along the second direction (e.g., ...). Figure 1 At both ends of the first plate 121 (direction b), the two second plates 122 are located on the side of the first plate 121 facing the bottom plate 11 and are perpendicular to the first plate 121. The two second plates 122 have flanges 123 on the side away from each other. The flanges 123 are adapted to fit and connect with the bottom plate 11. The first direction, the second direction and the thickness direction of the bottom plate 11 are perpendicular to each other. There are two clamping members 2, which are respectively connected to the side of the two second plates 122 away from each other, and are used to stretch the plate 12 to be connected. The first plate 121 and the second plate 122 are a single piece.

[0024] It is understandable that the connecting plate 12 forms a Z-shaped structure, creating a mechanical and technological scenario that is isomorphic to the vehicle crossbeam joint: on the one hand, the Z-shaped structure conforms to the structural shape of the vehicle crossbeam joint; on the other hand, when the vehicle crossbeam joint is connected, it is generally connected by the flange 123. In this application, the connection strength between the flange 123 and the base plate 11 can be measured for testing, thus more closely conforming to the actual connection method and technological scenario of the vehicle crossbeam joint.

[0025] Furthermore, the arrangement of the first plate 121, the second plate 122, and the flange 123 creates a cantilever structure for the plate to be connected 12. This introduces necessary eccentric lever arms and boundary constraints, causing the plate to be connected 12 to experience eccentric moments under loading. This results in controllable shear-bending coupled loads on the plate, leading to bending and peeling effects. This is precisely the complex stress pattern commonly observed in vehicle components (beams, stiffeners, etc.) during actual service, better reflecting real-world conditions and making the test results more accurate and consistent with actual conditions.

[0026] Furthermore, the first plate 121 and the second plate 122 are integral parts, that is, the plate 12 to be connected can be formed into the above structure by stamping or other methods. Thus, the plate 12 to be connected is an integrally formed part with high structural rigidity. The connection between the first plate 121 and the second plate 122 is not easily damaged, which is more in line with the actual situation of vehicle components.

[0027] According to the test device 10 of this application embodiment, a first plate 121 is located on one side of the thickness direction of the base plate 11 and spaced apart from the base plate 11. Two second plates 122 are respectively connected to the two ends of the first plate 121 along the second direction. Both second plates 122 are located on the side of the first plate 121 facing the base plate 11 and are perpendicular to the first plate 121. The side of the two second plates 122 away from each other has a flange 123, which is suitable for fitting and connecting with the base plate 11. Two clamping members 2 are respectively connected to the side of the two second plates 122 away from each other and are used to stretch the plate 12 to be connected. On the one hand, the plate 12 to be connected forms a Z-shaped structure, which is more in line with the actual shape of the components on the vehicle and the connection method and process scenario. On the other hand, it makes the plate 12 to be connected form a cantilever structure, which can be under complex stress conditions when the test component 1 is tested, which can better reflect the real working conditions, making the test results more in line with the real working conditions and making the test results more accurate.

[0028] In some embodiments of this application, such as Figure 1 As shown, the testing device 10 also includes: a reinforcing member 3, which consists of two members. The two reinforcing members 3 are respectively connected to the two second plates 122 on the side facing each other, and a portion of the reinforcing member 3 extends to the side of the first plate 121 facing the base plate 11.

[0029] It is understandable that the reinforcing member 3 extends along the first direction. The setting of the reinforcing member 3 improves the overall rigidity of the plate 12 to be connected, thereby preventing the second plate 122 and the connection between the first plate 121 and the second plate 122 from breaking during the test. This ensures that the fracture location is concentrated at the connection between the flange 123 and the base plate 11, thereby further improving the reliability and accuracy of the test results.

[0030] Furthermore, the reinforcing member 3 needs to be designed with a chamfer at the bend to avoid the bend of the reinforcing member 3 being too sharp and damaging the connection between the first plate 121 and the second plate 122. This further prevents the connection between the first plate 121 and the second plate 122 from breaking during the test. As a result, it can be ensured that the breakage location is concentrated at the connection between the flange 123 and the base plate 11, thereby further improving the reliability and accuracy of the test results.

[0031] In some embodiments of this application, such as Figure 1As shown, the reinforcing member 3, the clamping member 2, and the second plate 122 are connected by a first fastener 21. This improves the reliability of the connection between the reinforcing member 3, the clamping member 2, and the second plate 122. Specifically, on one side of the second plate 122 along the second direction, there are multiple first fasteners 21 evenly spaced along the first direction. On the one hand, the arrangement of multiple first fasteners 21 further improves the reliability of the connection between the reinforcing member 3, the clamping member 2, and the second plate 122. On the other hand, the even spacing of the multiple first fasteners 21 along the first direction prevents stress concentration when the clamping member 2 stretches the second plate 122, further improving the reliability and accuracy of the test results.

[0032] For example in Figure 1 In the example shown, on one side of the second plate 122 along the second direction, there are four first fasteners 21 that are evenly spaced along the first direction. However, this application is not limited to this. There may be more first fasteners 21, such as 5, 6, 7 or 8.

[0033] Furthermore, such as Figure 1 As shown, the first fastener 21 can be a screw or nut, wherein the nut can be located on the side of the two second plates 122 facing each other or on the side of the two second plates 122 away from each other. For example, in this application, the nut of the first fastener 21 is located on the side of the two second plates 122 facing each other, thereby avoiding interference with the clamping member 2.

[0034] In some embodiments of this application, such as Figure 1 As shown, the reinforcing member 3 and the second plate 122 are also connected by the second fastener 22. The first fastener 21 and the second fastener 22 are arranged opposite to each other and spaced apart along the thickness direction of the base plate 11. The first fastener 21 is located on the side of the second fastener 22 facing the flange 123. The distance between the first fastener 21 and the flange 123 and the distance between the second fastener 22 and the first plate 121 are equal.

[0035] Understandably, because the reinforcing member 3 is very high in the thickness direction of the base plate 11, the first fastener 21 cannot secure the reinforcing member 3 well. The addition of the second fastener 22 improves the connection reliability between the reinforcing member 3 and the second plate 122. Furthermore, the distance between the first fastener 21 and the flange 123, and the distance between the second fastener 22 and the first plate 121, are equal, allowing the plate 12 to be connected to be subjected to balanced forces, further improving the reliability and accuracy of the test results.

[0036] In addition, the second fastener 22 is a plurality of first fasteners 21 corresponding one-to-one, thereby further balancing the forces on the plate 12 to be connected, and further improving the reliability and accuracy of the test results.

[0037] Furthermore, such as Figure 1 As shown, the second fastener 22 can be a screw or nut, wherein the nut can be located on the side of the two second plates 122 facing each other, or on the side of the two second plates 122 away from each other.

[0038] In some embodiments of this application, such as Figure 1 As shown, the two clamping members 2 are symmetrically arranged, and the plane of symmetry of the two clamping members 2 is perpendicular to the second direction. This ensures the shortest load application path and minimizes bending and eccentricity, improving the reliability and accuracy of the test results.

[0039] In some embodiments of this application, such as Figure 1 As shown, the clamping member 2 has a protrusion 23 on the side facing the second plate 122. The protrusion 23 is used to connect with the second plate 122. The protrusion 23 consists of a plurality of protrusions that are evenly spaced along the first direction.

[0040] Understandably, the arrangement of multiple protrusions 23 improves the connection reliability between the clamping member 2 and the plate to be connected 12. The spacing of the multiple protrusions 23 can reduce weight while ensuring the connection reliability between the clamping member 2 and the plate to be connected 12, thereby improving economy.

[0041] In some embodiments of this application, the base plate 11 and the flange 123 are welded (e.g., by spot welding) and bonded. It is understood that the component connection method of the vehicle can be a composite connection method, that is, welding and bonding are used together. The welding and bonding of the base plate 11 and the flange 123 further makes the test results more consistent with the actual working conditions and makes the test results more accurate.

[0042] In addition, the setting of the flange 123 provides high rigidity clamping and stable current channel for spot welding, and provides sufficient spreading interface for bonding, which improves the connection reliability between the plate to be connected 12 and the base plate 11, and is more in line with the real working conditions, thus making the test more convenient and accurate.

[0043] In some embodiments of this application, such as Figure 1 As shown, the clamping member 2 is spaced apart from the flange 123 in the thickness direction of the base plate 11. This avoids installation interference between the flange 123 and the clamping member 2. Furthermore, if the clamping member 2 were tightly attached to the base plate 11, it would deform along with the clamping member 2 under stress, resulting in a complex force transmission path and making it difficult to clearly distinguish the stress effect on the sample. Maintaining a gap allows the force to be applied directly to the plate 12 to be connected through the clamping member 2, preventing the base plate 11 from bearing additional loads, thus ensuring the controllability and repeatability of the loading results.

[0044] In some embodiments of this application, such as Figure 1As shown, in the thickness direction of the base plate 11, the distance between the clamping member 2 and the flange 123 is H1, and the distance between the first plate 121 and the flange 123 is H2, where 1 / 3 ≤ H1 / H2 ≤ 1 / 2. It can be understood that by ensuring 1 / 3 ≤ H1 / H2 ≤ 1 / 2, on the one hand, the distance between the clamping member 2 and the flange 123 is not too small, thus avoiding installation interference between them and facilitating installation. On the other hand, it prevents the clamping member 2 from being too close to the first plate 121, which could lead to excessive load at the connection between the first plate 121 and the second plate 122, causing breakage at the connection. Therefore, 1 / 3 ≤ H1 / H2 ≤ 1 / 2 also ensures that the breakage location is concentrated at the connection between the flange 123 and the base plate 11, improving the accuracy of the test.

[0045] The following describes a test system according to an embodiment of this application.

[0046] The testing system according to the embodiments of this application includes the testing device 10 described above. For example, in this application, the testing system is a servo testing system such as MTS (Mechanical Testing and Simulation), which can efficiently and accurately complete fatigue testing under multi-point loading and complex working conditions.

[0047] Meanwhile, for example, in this application, the second direction, i.e. the stretching direction, is the vertical direction, but this application is not limited to this, and the second direction can also be the horizontal direction, etc.

[0048] According to the test system of this application embodiment, by setting the above-mentioned test device 10, the first plate 121 is located on one side of the thickness direction of the base plate 11 and spaced apart from the base plate 11. There are two second plates 122, which are respectively connected to the two ends of the first plate 121 along the second direction. The two second plates 122 are both located on the side of the first plate 121 facing the base plate 11 and perpendicular to the first plate 121. The side of the two second plates 122 away from each other has a flange 123, which is suitable for fitting and connecting with the base plate 11. Two clamping members 2 are respectively connected to the side of the two second plates 122 away from each other and are used to stretch the plate 12 to be connected. On the one hand, the plate 12 to be connected forms a Z-shaped structure, which is more in line with the actual shape of the components on the vehicle and the connection method and process scenario. On the other hand, it makes the plate 12 to be connected form a cantilever structure. When the test component 1 is tested, it can be under complex stress conditions, which can better reflect the real working conditions, making the test results more in line with the real working conditions and making the test results more accurate.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0050] In this application, "multiple" refers to two or more.

[0051] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0053] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0054] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A testing device, characterized in that, include: The test assembly includes a base plate and a plate to be connected. The plate to be connected extends along a first direction and includes a first plate and a second plate. The first plate is located on one side of the base plate in the thickness direction and is spaced apart from the base plate. There are two second plates, which are respectively connected to the two ends of the first plate along a second direction. Both second plates are located on the side of the first plate facing the base plate. The sides of the two second plates facing away from each other have flanges. The flanges are adapted to fit and connect with the base plate. The first direction, the second direction, and the thickness direction of the base plate are perpendicular to each other. The first plate and the second plate are a single piece. The clamping members are two in number, and the two clamping members are respectively connected to the two second plates on the opposite side of each other, for stretching the plates to be connected.

2. The testing apparatus according to claim 1, characterized in that, Also includes: The reinforcing members are two in number, each of which is connected to one side of the two second plates facing each other, and a portion of the reinforcing members extends to the side of the first plate facing the base plate.

3. The testing apparatus according to claim 2, characterized in that, The reinforcing member, the clamping member, and the second plate are connected by a first fastener.

4. The testing apparatus according to claim 3, characterized in that, The reinforcing member and the second plate are also connected by a second fastener. The first fastener and the second fastener are arranged opposite to each other and spaced apart along the thickness direction of the base plate. The first fastener is located on the side of the second fastener facing the flange.

5. The testing apparatus according to claim 1, characterized in that, The two clamping members are symmetrically arranged, and the plane of symmetry of the two clamping members is perpendicular to the second direction.

6. The testing apparatus according to claim 1, characterized in that, The clamping member has a protrusion on the side facing the second plate, the protrusion being used to connect with the second plate, and the protrusion being a plurality of protrusions evenly spaced along the first direction.

7. The testing apparatus according to claim 1, characterized in that, The base plate and the flange are connected by welding and bonding.

8. The testing apparatus according to claim 1, characterized in that, In the thickness direction of the base plate, the clamping member is spaced apart from the flange.

9. The testing apparatus according to claim 1, characterized in that, In the thickness direction of the base plate, the distance between the clamping member and the flange is H1, and the distance between the first plate and the flange is H2, where 1 / 3 ≤ H1 / H2 ≤ 1 / 2.

10. A testing system, characterized in that, Includes the testing apparatus according to any one of claims 1-9.

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