Test device

Abstract

The utility model provides a kind of testing device, testing device includes: frame body;At least two clamping components are set on frame body, at least two clamping components are respectively connected with the two first ends of the opposite setting of test piece, at least one clamping component is movably arranged along first preset direction, to reciprocatingly stretch test piece along first preset direction;At least two gripping components are set on frame body, at least two gripping components are respectively connected with the two second ends of the opposite setting of test piece, at least one gripping component is movably arranged along second preset direction, to reciprocatingly stretch test piece along second preset direction;Wherein, first preset direction and second preset direction are arranged at angle.This utility model effectively solves the problem of lower accuracy of testing device in prior art for testing tire groove bottom crack.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and more specifically, to a testing device. Background Technology

[0002] Currently, tires, as an important component of automobiles, are generally designed with different tread patterns to improve vehicle handling and safety. However, during prolonged use, cracks may appear at the bottom of the tire tread grooves. Once these cracks occur, the tire becomes unusable, increasing user complaints and causing economic losses to the manufacturer.

[0003] In existing technologies, manufacturers typically cut the produced tires into test specimens and conduct vertical load tests on these specimens to simulate the stress conditions experienced by the tires during use. They also record the critical load at which the bottom of the tread grooves cracks during the test, thereby optimizing the tires by modifying the tire formula or adjusting the tire manufacturing process accordingly.

[0004] However, traditional vertical load tests can only simulate the force exerted on a tire in a single direction, while tires are subjected to multiple factors during actual use. Therefore, traditional vertical load tests have certain limitations in evaluating tire tread groove bottom cracks, reducing the accuracy of tire tread groove bottom crack testing. Utility Model Content

[0005] The main objective of this invention is to provide a testing device to solve the problem of low accuracy in testing tire tread groove bottom cracks in existing technologies.

[0006] To achieve the above objectives, this utility model provides a testing device, comprising: a frame; at least two clamping components disposed on the frame, the at least two clamping components being respectively connected to two first ends of a test piece disposed opposite to each other, at least one clamping component being movably disposed along a first preset direction to reciprocately stretch the test piece along the first preset direction; at least two gripping components disposed on the frame, the at least two gripping components being respectively connected to two second ends of a test piece disposed opposite to each other, at least one gripping component being movably disposed along a second preset direction to reciprocately stretch the test piece along the second preset direction; wherein the first preset direction and the second preset direction are arranged at an angle.

[0007] Furthermore, the testing device also includes a gripping drive structure, which is driven to connect with each gripping component to drive at least two gripping components to move toward or away from each other along a second preset direction.

[0008] Furthermore, the gripping component includes multiple gripping structures, which are spaced apart along a first preset direction. The testing device also includes a connecting structure, one end of which is connected to each gripping structure, and the other end of which is connected to the gripping drive structure.

[0009] Furthermore, the testing device also includes multiple buffer components, which are arranged one-to-one with multiple gripping structures. Each buffer component includes: a first buffer structure connected to the gripping structure; and a second buffer structure movably fitted onto the first buffer structure, with the end of the second buffer structure away from the gripping structure connected to the connecting structure. The second buffer structure and the first buffer structure have frictional force to buffer the driving force of the gripping drive structure.

[0010] Furthermore, the clamping assembly includes at least two clamping structures, which surround each other to form a clamping space, the size of which is adjustable for clamping the first end.

[0011] Furthermore, the clamping assembly also includes: at least two mounting structures, which are disposed opposite to each other on the frame, and the at least two mounting structures surround each other to form a mounting space for accommodating the clamping structure, the mounting structure having a threaded hole communicating with the mounting space; a clamping drive member, at least a portion of which passes through the threaded hole and is threadedly engaged with the threaded hole, one end of which extends into the mounting space and abuts against the clamping structure; wherein, during the process of tightening the clamping drive member, the clamping drive member pushes the clamping structure away from the mounting structure.

[0012] Furthermore, the clamping assembly also includes an anti-slip structure disposed between the clamping structure and the test piece to increase the friction between the clamping structure and the test piece.

[0013] Furthermore, the testing device also includes a clamping drive assembly, which is drivenly connected to at least one clamping assembly to drive at least one clamping assembly to move toward or away from at least one other clamping assembly along a first preset direction.

[0014] Furthermore, the clamping drive assembly includes: a receiving structure disposed on the mounting structure, the end of the receiving structure away from the mounting structure having a connecting recess; a crank structure having a first mating part and a second mating part, the first mating part extending into the connecting recess and slidably disposed along the extending direction of the connecting recess; and a clamping drive structure drivingly connected to the second mating part; wherein, during the process of the clamping drive structure driving the second mating part to rotate the first mating part around a preset axis, the receiving structure drives the mounting structure to move along a first preset direction.

[0015] Furthermore, the clamping drive assembly also includes a transmission structure, which includes: a driving wheel, sleeved on the output shaft of the clamping drive structure; a driven wheel, sleeved on the second mating part to drive the second mating part to rotate; and a transmission belt, respectively sleeved on the driving wheel and the driven wheel, the transmission belt rotating synchronously with the driving wheel.

[0016] Applying the technical solution of this utility model, at least two clamping components of the testing device are mounted on the frame, and are respectively connected to two first ends of the test piece opposite to each other. At least one clamping component is movably mounted along a first preset direction to reciprocately stretch the test piece along the first preset direction. At least two gripping components are mounted on the frame, and are respectively connected to two second ends of the test piece opposite to each other. At least one gripping component is movably mounted along a second preset direction to reciprocately stretch the test piece along the second preset direction. The first and second preset directions are arranged at an angle. Thus, when the operator needs to perform a tread groove bottom crack simulation test on a tire, the operator cuts the tire into a sample. Then, the two clamping components clamp the two first ends of the sample, and the two gripping components grip the two second ends of the sample. Subsequently, the clamping assembly and the gripping assembly reciprocate to stretch the sample along the first preset direction and the second preset direction, respectively. The first preset direction and the second preset direction, which are set at an angle, simulate the force situation of the tire in different directions during use, ensuring the simulation authenticity of the test device, thereby improving the test accuracy and reliability of the test device, and thus solving the problem of low test accuracy of the test device for tire tread groove bottom cracks in the prior art. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A front view of the overall structure of an embodiment of the testing apparatus according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A partial structural front view of the test device in the image;

[0020] Figure 3 It shows Figure 1 A partial structural front view of the test device.

[0021] The above figures include the following reference numerals:

[0022] 1. Test piece;

[0023] 10. Frame;

[0024] 20. Clamping assembly; 21. Mounting structure; 211. Threaded hole;

[0025] 30. Secure the components; 31. Secure the structure;

[0026] 40. Focus on the drive structure;

[0027] 50. Connection structure;

[0028] 60. Buffer component; 61. First buffer structure; 62. Second buffer structure;

[0029] 70. Clamping drive assembly; 71. Receiving structure; 711. Connecting recess; 72. Crank structure; 721. First mating part; 722. Second mating part; 73. Clamping drive structure; 74. Transmission structure; 741. Driving pulley; 742. Driven pulley; 743. Transmission belt. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] To address the issue of low accuracy in testing tire tread groove bottom cracks using existing testing devices, this application provides a testing device.

[0034] like Figures 1 to 3As shown, the testing device includes a frame 10, at least two clamping components 20, and at least two gripping components 30. At least two clamping components 20 are mounted on the frame 10 and connected to two opposite first ends of the test piece 1. At least one clamping component 20 is movably mounted along a first preset direction to reciprocate and stretch the test piece 1 along that direction. At least two gripping components 30 are mounted on the frame 10 and connected to two opposite second ends of the test piece 1. At least one gripping component 30 is movably mounted along a second preset direction to reciprocate and stretch the test piece 1 along that direction. The first and second preset directions are arranged at an angle.

[0035] Using the technical solution of this embodiment, at least two clamping components 20 of the testing device are disposed on the frame 10. Each clamping component 20 is connected to two opposite first ends of the test piece 1. At least one clamping component 20 is movably disposed along a first preset direction to reciprocately stretch the test piece 1 along the first preset direction. At least two gripping components 30 are disposed on the frame 10. Each gripping component 30 is connected to two opposite second ends of the test piece 1. At least one gripping component 30 is movably disposed along a second preset direction to reciprocately stretch the test piece 1 along the second preset direction. The first and second preset directions are arranged at an angle. Thus, when the operator needs to perform a tread groove bottom crack simulation test on the tire, the operator cuts the tire into a sample. Then, the two clamping components 20 clamp the two first ends of the sample, and the two gripping components 30 grip the two second ends of the sample. Subsequently, the clamping assembly 20 and the gripping assembly 30 reciprocate to stretch the sample along the first preset direction and the second preset direction, respectively. The first preset direction and the second preset direction, which are set at an angle, simulate the force situation of the tire in different directions during use, ensuring the simulation authenticity of the test device, thereby improving the test accuracy and reliability of the test device, and thus solving the problem of low test accuracy of the test device for tire tread groove bottom cracks in the prior art.

[0036] In this embodiment, the test piece 1 is a sample made by cutting a tire.

[0037] In this embodiment, the first preset direction and the second preset direction are set at a 90° angle.

[0038] like Figure 1 As shown, the first preset direction is set perpendicular to the horizontal plane, and the second preset direction is set parallel to the horizontal plane.

[0039] In this embodiment, two clamping components 20 are provided.

[0040] It should be noted that the number of clamping components 20 is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, the number of clamping components 20 can be three, four, five, eight, or more.

[0041] In this embodiment, two gripping components 30 are provided.

[0042] It should be noted that the number of clamping components 30 is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, the number of clamping components 30 can be three, four, five, eight, or more.

[0043] like Figure 1 and Figure 3 As shown, the testing device also includes a gripping drive structure 40, which is drivenly connected to each gripping component 30 to drive at least two gripping components 30 to move toward or away from each other along a second preset direction. In this way, by activating the gripping drive structure 40, the operator can move the gripping components 30, reducing the operator's workload and improving work efficiency. Simultaneously, the gripping drive structure 40 provides a stable and continuous driving force for the movement of the gripping components 30, ensuring the operational reliability and stability of the gripping components 30, and thus guaranteeing the testing reliability of the testing device.

[0044] In this embodiment, the gripping drive structure 40 is a hydraulic cylinder with two piston rods. The two piston rods are respectively connected to two gripping components 30 and drive the two gripping components 30 to move toward or away from each other.

[0045] In this embodiment, the gripping drive structure 40 is also connected to a hydraulic station.

[0046] like Figure 1 and Figure 3 As shown, the gripping assembly 30 includes multiple gripping structures 31, which are spaced apart along a first preset direction. The testing device also includes a connecting structure 50. One end of the connecting structure 50 is connected to each gripping structure 31, and the other end is connected to the gripping drive structure 40. This arrangement of multiple gripping structures 31 increases the contact area between the gripping assembly 30 and the sample, ensuring the stability of the connection between the gripping assembly 30 and the sample, as well as the uniformity of sample clamping. This ensures that the gripping assembly 30 stably stretches the sample along the second preset direction, guaranteeing the operational reliability of the gripping assembly 30. Simultaneously, the arrangement of the connecting structure 50 allows the gripping drive structure 40 to simultaneously drive multiple gripping structures 31 simply by driving the connecting structure 50, reducing the complexity of the connection between the gripping drive structure 40 and the multiple gripping structures 31, and improving the convenience of the testing device.

[0047] In this embodiment, the clamping structure 31 is connected to the test piece 1.

[0048] Specifically, the gripping structure 31 has two jaws that surround each other to form a gripping space. The two jaws can swing toward or away from each other to adjust the size of the gripping space for gripping the second end of the test piece 1.

[0049] In this embodiment, two gripping structures 31 are provided.

[0050] It should be noted that the number of clamping structures 31 is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, the number of clamping structures 31 can be three, four, five, eight, or more.

[0051] like Figure 1 and Figure 3 As shown, the testing device also includes multiple buffer components 60, each corresponding to a multiple gripping structure 31. Each buffer component 60 includes a first buffer structure 61 and a second buffer structure 62. The first buffer structure 61 is connected to the gripping structure 31. The second buffer structure 62 is movably fitted onto the first buffer structure 61, with its end away from the gripping structure 31 connected to the connecting structure 50. Friction exists between the second buffer structure 62 and the first buffer structure 61 to buffer the driving force of the gripping drive structure 40. Thus, the buffer component 60 positioned between the gripping drive structure 40 and the gripping structure 31 absorbs and buffers the driving force between them, allowing the driving force of the gripping drive structure 40 to be applied to the sample more gently. This avoids direct application of the driving force to the sample, preventing sudden changes in force and simulating the external forces experienced by a tire in actual use, thus improving the simulation accuracy of the testing device. Meanwhile, the buffer assembly 60 is connected to the gripping structure 31 through the first buffer structure 61 and to the connecting structure 50 through the second buffer structure 62. The friction between the first buffer structure 61 and the second buffer structure 62 absorbs and buffers the driving force applied to the gripping drive structure 40, thus ensuring the buffering reliability of the buffer assembly 60.

[0052] In this embodiment, the buffer component 60 is a telescopic rod.

[0053] like Figure 1As shown, the clamping assembly 20 includes at least two clamping structures, which surround each other to form a clamping space. The size of the clamping space is adjustable for clamping the first end. In this way, the two clamping structures can clamp the first end of the sample, ensuring the connection stability between the clamping assembly 20 and the sample, and also achieving uniform clamping of the sample. Simultaneously, the adjustable size of the clamping space can accommodate samples of different specifications and sizes, improving the versatility of the clamping assembly 20 and thus enhancing the versatility of the testing device.

[0054] In this embodiment, two clamping structures are provided.

[0055] It should be noted that the number of clamping structures is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, the number of clamping structures can be three, four, five, eight, or more.

[0056] In this embodiment, the clamping assembly 20 further includes at least two mounting structures 21 and a clamping drive. The at least two mounting structures 21 are disposed opposite each other on the frame 10, forming a mounting space between them. This mounting space accommodates the clamping structure, and each mounting structure 21 has a threaded hole 211 communicating with the mounting space. At least a portion of the clamping drive passes through the threaded hole 211 and is threadedly engaged with it. One end of the clamping drive extends into the mounting space and abuts against the clamping structure. During the tightening of the clamping drive, it pushes the clamping structure away from the mounting structure 21. Thus, the clamping assembly 20 achieves connection with the frame 10 through the mounting structures 21, ensuring the installation stability of the clamping assembly 20. Simultaneously, the operator places the first end of the sample in the clamping space and tightens the clamping drive, causing it to abut against the clamping structure. The operator continues to push the clamping structure against the sample until both clamping structures clamp the sample, ensuring reliable clamping of the sample. Meanwhile, the clamping drive unit and the threaded hole 211 engage to achieve clamping drive of the clamping structure, so that the clamping drive unit does not need to be equipped with an air supply device, oil supply device or power supply device, which reduces the operating cost of the clamping assembly 20, improves the economy of the clamping assembly 20, and thus improves the economy of the testing device.

[0057] In this embodiment, the mounting structure 21 is plate-shaped.

[0058] In this embodiment, there are multiple threaded holes 211, which are spaced apart along the length of the mounting structure 21. There are also multiple clamping drive components, which are arranged one-to-one with the multiple threaded holes 211 to increase the contact area with the clamping structure, thereby increasing the clamping force of the clamping structure on the sample and improving the clamping stability of the clamping assembly 20.

[0059] In this embodiment, the clamping structure is plate-shaped.

[0060] In this embodiment, the clamping drive component is a bolt.

[0061] Specifically, the clamping assembly 20 also includes an anti-slip structure. This anti-slip structure is positioned between the clamping structure and the test piece 1 to increase the friction between them. This arrangement increases the friction between the clamping structure and the sample, preventing the sample from falling out of the clamping space due to excessive test force applied to it. This ensures the clamping reliability of the clamping assembly 20 and also guarantees the testing stability and reliability of the testing device.

[0062] In this embodiment, the anti-slip structure is an anti-slip mat.

[0063] like Figure 1 and Figure 2 As shown, the testing device also includes a clamping drive assembly 70, which is driven to at least one clamping assembly 20 to drive the at least one clamping assembly 20 to move toward or away from at least one other clamping assembly 20 along a first preset direction. In this way, by activating the clamping drive assembly 70, the operator can move the clamping assembly 20, reducing the operator's workload and improving work efficiency. Simultaneously, the clamping drive assembly 70 provides a stable and continuous driving force for the movement of the clamping assembly 20, ensuring the operational reliability and stability of the clamping assembly 20, and thus guaranteeing the testing reliability of the testing device.

[0064] like Figure 1 and Figure 2As shown, the clamping drive assembly 70 includes a receiving structure 71, a crank structure 72, and a clamping drive structure 73. The receiving structure 71 is disposed on the mounting structure 21, and its end away from the mounting structure 21 has a connecting recess 711. The crank structure 72 has a first mating portion 721 and a second mating portion 722. The first mating portion 721 extends into the connecting recess 711 and is slidably disposed along the extending direction of the connecting recess 711. The clamping drive structure 73 is drivenly connected to the second mating portion 722. During the process where the clamping drive structure 73 drives the second mating portion 722 to rotate the first mating portion 721 around a preset axis, the receiving structure 71 drives the mounting structure 21 to move along a first preset direction. In this way, the clamping drive structure 73 drives the first mating part 721 to rotate around the preset axis by driving the second mating part 722. During the rotation along the preset axis, the first mating part 721 slides back and forth along the extension direction of the connecting recess 711 and drives the mounting structure 21 to move through the receiving structure 71. Since the mounting structure 21 is set on the frame 10, the mounting structure 21 slides on the frame 10 along the first preset direction, realizing the transformation from the rotational motion of the crank structure 72 to the linear motion of the mounting structure 21, thus ensuring the reliability of the movement of the clamping assembly 20.

[0065] In this embodiment, the connecting recess 711 is provided as a strip-shaped hole.

[0066] In this embodiment, a bearing is provided in the connecting recess 711, and the first mating part 721 extends into the bearing to reduce the friction between the first mating part 721 and the connecting recess 711, thereby improving the smoothness of movement of the mounting structure 21.

[0067] In this embodiment, the clamping drive structure 73 is a motor.

[0068] like Figure 1 and Figure 2 As shown, the clamping drive assembly 70 also includes a transmission structure 74, which comprises a driving wheel 741, a driven wheel 742, and a transmission belt 743. The driving wheel 741 is mounted on the output shaft of the clamping drive assembly 73. The driven wheel 742 is mounted on the second mating part 722 to drive the second mating part 722 to rotate. The transmission belt 743 is mounted on both the driving wheel 741 and the driven wheel 742, and rotates synchronously with the driving wheel 741. In this way, the clamping drive assembly 73 drives the driven wheel 742 to rotate by driving the driving wheel 741, thereby driving the first mating part 721 and the second mating part 722, ensuring the reliability of the rotation of the first mating part 721 and the second mating part 722. At the same time, the above arrangement also ensures the accuracy and stability of power transmission, thereby ensuring the motion stability of the clamping assembly 20.

[0069] In this embodiment, the preset axis is aligned with the central axis of the driven wheel 742.

[0070] Specifically, when staff need to conduct a tread groove bottom crack simulation test on a tire, they cut the tire into a sample. Then, the first end of the sample is placed in the clamping space, and an anti-slip structure is placed between the sample and the clamping structure. Next, the staff rotates the clamping drive, causing it to move the clamping structure to clamp the sample. Then, the staff uses the grippers of multiple gripping structures 31 to hold the two first ends of the sample. Then, the staff activates the clamping drive structure 73 and the gripping drive structure 40. The clamping drive structure 73 drives the crank structure 72 to rotate via the transmission structure 74. The crank structure 72 drives the receiving structure 71 to move, and the receiving mechanism drives the clamping assembly 20 to move, thereby achieving reciprocating tension of the sample along the vertical direction. At the same time, the gripping drive structure 40 drives the connecting structure 50 to move the buffer component 60. After the buffer component 60 buffers the driving force, it drives the gripping structure 31 to move, thereby realizing the reciprocating tension of the sample in the horizontal direction. This simulates the force situation of the tire in different directions during use, ensuring the simulation authenticity of the test device and improving the test accuracy and reliability of the test device.

[0071] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0072] The testing device includes at least two clamping components mounted on a frame, each connected to one of the two opposite first ends of the test piece. At least one clamping component is movably mounted along a first preset direction to reciprocate and stretch the test piece along that direction. At least two gripping components are also mounted on the frame, each connected to one of the two opposite second ends of the test piece. At least one gripping component is movably mounted along a second preset direction to reciprocate and stretch the test piece along that direction. The first and second preset directions are arranged at an angle. Thus, when a worker needs to perform a tread groove bottom crack simulation test on a tire, the worker cuts the tire into a sample. Then, the two clamping components clamp the two first ends of the sample, and the two gripping components grip the two second ends of the sample. Subsequently, the clamping assembly and the gripping assembly reciprocate to stretch the sample along the first preset direction and the second preset direction, respectively. The first preset direction and the second preset direction, which are set at an angle, simulate the force situation of the tire in different directions during use, ensuring the simulation authenticity of the test device, thereby improving the test accuracy and reliability of the test device, and thus solving the problem of low test accuracy of the test device for tire tread groove bottom cracks in the prior art.

[0073] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0074] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0075] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A testing device, characterized in that, include: Frame (10); At least two clamping components (20) are disposed on the frame (10), and the at least two clamping components (20) are respectively connected to two first ends of the test piece (1) disposed opposite to each other. At least one clamping component (20) is movably disposed along a first preset direction to reciprocate the test piece (1) along the first preset direction. At least two gripping components (30) are disposed on the frame (10), and at least two gripping components (30) are respectively connected to two second ends of the test piece (1) disposed opposite to each other. At least one gripping component (30) is movably disposed along a second preset direction to reciprocate the test piece (1) along the second preset direction. The first preset direction and the second preset direction are set at an angle.

2. The testing apparatus according to claim 1, characterized in that, The testing device further includes a gripping drive structure (40), which is driven to each of the gripping components (30) to drive at least two of the gripping components (30) to move toward or away from each other along the second preset direction.

3. The testing apparatus according to claim 2, characterized in that, The gripping assembly (30) includes a plurality of gripping structures (31), which are spaced apart along a first preset direction. The testing device further includes: A connecting structure (50) is provided, one end of which is connected to each of the gripping structures (31), and the other end of which is connected to the gripping drive structure (40).

4. The testing apparatus according to claim 3, characterized in that, The testing device further includes multiple buffer components (60), each of which is arranged in a one-to-one correspondence with a multiple gripping structure (31). Each buffer component (60) includes: The first buffer structure (61) is connected to the gripping structure (31); The second buffer structure (62) is movably sleeved on the first buffer structure (61), and the end of the second buffer structure (62) away from the gripping structure (31) is connected to the connecting structure (50); The second buffer structure (62) has friction with the first buffer structure (61) to buffer the driving force of the gripping drive structure (40).

5. The testing apparatus according to claim 3, characterized in that, The clamping assembly (20) includes at least two clamping structures, with a clamping space formed between the at least two clamping structures, the size of which is adjustable for clamping the first end.

6. The testing apparatus according to claim 5, characterized in that, The clamping assembly (20) further includes: At least two mounting structures (21) are disposed opposite to each other on the frame (10), and an mounting space is formed between the at least two mounting structures (21), the mounting space being used to accommodate the clamping structure, and the mounting structure (21) having a threaded hole (211) communicating with the mounting space; A clamping drive, at least a portion of which passes through the threaded hole (211) and is threadedly engaged with the threaded hole (211), with one end of the clamping drive extending into the mounting space and abutting against the clamping structure; During the process of screwing the clamping drive, the clamping drive pushes the clamping structure away from the mounting structure (21).

7. The testing apparatus according to claim 5, characterized in that, The clamping assembly (20) further includes: An anti-slip structure is provided between the clamping structure and the test piece (1) to increase the friction between the clamping structure and the test piece (1).

8. The testing apparatus according to claim 6, characterized in that, The testing device further includes a clamping drive assembly (70), which is drivenly connected to at least one of the clamping assemblies (20) to drive at least one of the clamping assemblies (20) to move toward or away from at least one other clamping assembly (20) along the first preset direction.

9. The testing apparatus according to claim 8, characterized in that, The clamping drive assembly (70) includes: A receiving structure (71) is provided on the mounting structure (21), and the end of the receiving structure (71) away from the mounting structure (21) has a connecting recess (711); The crank structure (72) has a first mating part (721) and a second mating part (722), wherein the first mating part (721) extends into the connecting recess (711) and is slidably disposed along the extending direction of the connecting recess (711); The clamping drive structure (73) is driven to connect with the second mating part (722); During the process where the clamping drive structure (73) drives the second mating part (722) to rotate the first mating part (721) around the preset axis, the receiving structure (71) drives the mounting structure (21) to move along the first preset direction.

10. The testing apparatus according to claim 9, characterized in that, The clamping drive assembly (70) further includes a transmission structure (74), which includes: The drive wheel (741) is sleeved on the output shaft of the clamping drive structure (73); The driven wheel (742) is sleeved on the second mating part (722) to drive the second mating part (722) to rotate; A transmission belt (743) is respectively fitted on the driving wheel (741) and the driven wheel (742), and the transmission belt (743) rotates synchronously with the driving wheel (741).

Images