Mechanical property testing system

Abstract

The invention relates to a mechanical property test system, which comprises a base, a support and a clamping module, and is characterized in that the support is fixedly arranged on the base and extends along a first direction; the clamping module comprises an upper clamping module and a lower clamping module which are oppositely arranged in the first direction, the lower clamping module is arranged on the base, and the upper clamping module is in sliding connection with the support so as to be close to or away from the lower clamping module; the upper clamping module comprises two first clamping parts and two first telescopic parts, the two first clamping parts move in the second direction so as to be matched and attached to each other or away from each other, and the two first telescopic parts are arranged in the two first clamping parts respectively and can move relative to the first clamping parts in the first direction and the second direction; the lower clamping module comprises two second clamping parts and two second telescopic parts, and the two second clamping parts and the two second telescopic parts are arranged as same as the first telescopic part and the first clamping part. Through the design, various mechanical property tests can be carried out, and the test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite materials, and in particular to a mechanical property testing system. BACKGROUND

[0002] The mechanical property testing of composite materials is a core means for evaluating the load-carrying capacity, reliability and durability of the composite materials in practical applications. The mechanical property testing includes tensile testing, compression testing and bending testing. In related technologies, a plurality of different tests are respectively performed by a plurality of devices in sequence, and the testing efficiency is low. SUMMARY

[0003] To overcome the problems in related technologies, the present application provides a mechanical property testing system, which can improve the testing efficiency of the mechanical properties of a sample.

[0004] According to some embodiments, the present application provides a mechanical property testing system, which comprises: a base; a support fixedly arranged on the base, the support extending along a first direction; a clamping module comprising an upper clamping module and a lower clamping module arranged opposite to each other along the first direction, the lower clamping module being arranged on the base, and the upper clamping module being in sliding connection with the support to approach or move away from the lower clamping module; wherein the upper clamping module comprises two first clamping portions and two first extension portions, the two first clamping portions being movable in a second direction to mutually adapt to each other or move away from each other, the two first extension portions being respectively arranged inside the two first clamping portions and being movable relative to the first clamping portions in the first direction and the second direction; the lower clamping module comprises two second clamping portions and two second extension portions, the two second clamping portions being movable in the second direction to mutually adapt to each other or move away from each other, the two second extension portions being respectively arranged inside the two second clamping portions and being movable relative to the second clamping portions in the first direction and the second direction; and the first direction is perpendicular to the second direction.

[0005] In some embodiments of the present application, the support comprises two support rods arranged at intervals in the second direction, and each of the two support rods is provided with a first sliding rail on two opposite surfaces of the support rod, each of the first sliding rails extending along the first direction. The mechanical property testing system further comprises a first driving device and a cross beam, the cross beam extending along the second direction, the cross beam being arranged between the two support rods, and two ends of the cross beam being in sliding connection with the two first sliding rails, respectively, and the output end of the first driving device being connected with the two ends of the cross beam to drive the cross beam to move on the first sliding rails.

[0006] In some embodiments of the present application, a second sliding rail is arranged on a side of the cross beam facing the base, the second sliding rail extends along the second direction, and the upper clamping module is in sliding connection with the second sliding rail; The mechanical property testing system further comprises a second driving device arranged on the cross beam, an output end of the second driving device being connected with the upper clamping module to drive the two first clamping parts to move on the second sliding rail; A third sliding rail is arranged on a side of the base facing the cross beam, the third sliding rail extends along the second direction, and the lower clamping module is in sliding connection with the third sliding rail; The mechanical property testing system further comprises a third driving device arranged on the base, an output end of the third driving device being connected with the lower clamping module to drive the two second clamping parts to move on the third sliding rail.

[0007] In some embodiments of the present application, A first through hole and a fourth sliding rail are arranged on a side of the first clamping part facing the lower clamping module, the first through hole extends along the first direction, and the fourth sliding rail extends along the second direction; The mechanical property testing system further comprises a fourth driving device arranged on the first clamping part, an output end of the fourth driving device being connected with the first telescopic part to drive the two first telescopic parts to extend and retract in the first through hole or to move on the fourth sliding rail; A second through hole and a fifth sliding rail are arranged on a side of the second clamping part facing the upper clamping module, the second through hole extends along the first direction, and the fifth sliding rail extends along the second direction; The mechanical property testing system further comprises a fifth driving device arranged on the second clamping part, an output end of the fifth driving device being connected with the second telescopic part to drive the two second telescopic parts to extend and retract in the second through hole or to move on the fifth sliding rail.

[0008] In some embodiments of the present application, two opposite sides of the first clamping part are planes and are perpendicular to the second direction, and two opposite sides of the second clamping part are planes and are perpendicular to the second direction; And / or, two opposite sides of the first telescopic part are planes and are perpendicular to the second direction, and two opposite sides of the second telescopic part are planes and are perpendicular to the second direction.

[0009] In some embodiments of the present application, the two first telescopic parts and the two second telescopic parts are respectively retracted into the two first clamping parts and the two second clamping parts, the two first clamping parts clamp the first end of the sample, the two second clamping parts clamp the second end of the sample, and the upper clamping module is driven to move away from the lower clamping module in the first direction to perform a tensile property test.

[0010] In some embodiments of the present application, the two first clamping parts form a first compression disc, the two second clamping parts form a second compression disc, and the two opposite end faces of the sample in the first direction are located at the junction of the two first clamping parts and the junction of the two second clamping parts, respectively. The two first telescopic parts clamp the first end of the sample, the two second telescopic parts clamp the second end of the sample, and in the first direction, the sum of the length of the first telescopic part extending out of the first clamping part and the length of the second telescopic part extending out of the second clamping part is less than the length of the sample, and the first compression disc is driven to move towards the second compression disc in the first direction to perform a compression property test.

[0011] In some embodiments of the present application, the two second telescopic parts extend relative to the two second clamping parts, and in the second direction, the distance between the two second telescopic parts is adapted to the length of the sample, so that the two ends of the sample in the second direction are placed on the two second clamping parts, and the two ends of the sample are in contact with the two second telescopic parts, respectively. The two first clamping parts are attached, and the two first telescopic parts form a compression piece, and in the second direction, the compression piece is located at the midpoint of the sample, and the compression piece is driven to move towards the sample in the first direction and press the sample to perform a bending property test.

[0012] In some embodiments of the present application, the mechanical property test system further comprises a drone, and the drone is used to transport the sample to the clamping module, the drone comprises a body, a mechanical arm and a clamp, wherein the first end of the mechanical arm is fixedly connected with the body, the second end of the mechanical arm is connected with the clamp, and a multi-rotor power module is arranged on the body to fly.

[0013] In some embodiments of the present application, the mechanical arm comprises a six-degree-of-freedom mechanical arm, and the clamp comprises a pressure sensor array, which is used to detect the pressure of the clamp on the sample in real time.

[0014] The technical scheme provided by the embodiments of the present application can include the following beneficial effects: The mechanical property testing system provided by the application comprises a clamping module, the clamping module comprises an upper clamping module and a lower clamping module which are oppositely arranged and can move relative to each other in a first direction, two first clamping parts of the upper clamping module and two second clamping parts of the lower clamping module can be close to or away from each other in a second direction, and the two first clamping parts and the two second clamping parts can clamp two ends of a sample respectively for tensile property testing; two first telescopic parts arranged in the two first clamping parts can move in the first direction and the second direction, two second telescopic parts arranged in the two second clamping parts can move in the first direction and the second direction, and the two first clamping parts and the two second clamping parts can also be combined into one body respectively, and cooperate with the first telescopic parts and the second telescopic parts to perform compression property testing on the sample; in addition, the two first clamping parts can be combined, the two second clamping parts can be separated, and the first telescopic parts and the second telescopic parts are extended to cooperate to perform bending property testing; a device is used to realize multiple mechanical property testing, improve the testing efficiency, and save the testing cost.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0017] Figure 1 is a structural schematic diagram of a mechanical property testing system according to an exemplary embodiment; Figure 2 is a structural schematic diagram of a clamping module according to an exemplary embodiment; Figure 3 is a structural schematic diagram of a UAV according to an exemplary embodiment.

[0018] Reference signs: 10, sample; 100, base; 110, third sliding rail; 200, support; 210, support rod; 2110, first sliding rail; 220, cross beam; 300, clamping module; 310, upper clamping module; 3110, first clamping part; 3120, first telescopic part; 3130, first connecting part; 320, lower clamping module; 3210, second clamping part; 3220, second telescopic part; 3230, second connecting part; 3240, fifth sliding rail; 3250, fifth driving device; 400, UAV; 410, body; 4110, multi-rotor power module; 420, mechanical arm; 430, clamp. DETAILED DESCRIPTION

[0019] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same numbers in different drawings represent the same or similar elements unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application.

[0020] The mechanical property test of the composite material includes tensile test, compression test and bending test, etc. The tensile test, compression test and bending test are respectively used to test the tensile property, compression property and bending property of the composite material, and then determine the load-carrying capacity, reliability and durability of the composite material in actual application. The tensile property is used to evaluate the strength, stiffness and plasticity of the material under axial tension, the compression test is used to evaluate the compression resistance of the material under axial pressure, and the bending property is used to evaluate the bending strength and stiffness of the material under bending load. In the related art, a plurality of different tests need to be performed on a plurality of samples in sequence by a plurality of devices, and the plurality of sample transportation paths increase the time cost, resulting in low test efficiency, and also increase the equipment cost of the test.

[0021] In order to solve the above technical problems, the present application provides a mechanical property test system, by setting a clamping module, including an upper clamping module and a lower clamping module oppositely arranged and relatively movable in a first direction, two first clamping parts of the upper clamping module and two second clamping parts of the lower clamping module can be close or away in a second direction, and the two first clamping parts and the two second clamping parts can clamp the two ends of the sample respectively for tensile property test; two first telescopic parts arranged inside the two first clamping parts can move in the first direction and the second direction, two second telescopic parts arranged inside the two second clamping parts can move in the first direction and the second direction, and the two first clamping parts and the two second clamping parts can be combined into one body respectively, and cooperate with the first telescopic parts and the second telescopic parts to perform compression property test on the sample; in addition, the two first clamping parts can be combined, the two second clamping parts can be separated, and the first telescopic parts and the second telescopic parts are extended to cooperate to perform bending property test; a plurality of mechanical property tests are realized by one device, the test efficiency is improved, and the test cost is saved.

[0022] The mechanical property test system according to the present application will be described in detail below with reference to the drawings.

[0023] The mechanical property test system according to the present application will be described in detail below with reference to the drawings. Figure 1 and Figure 2As shown in the figure, the z-axis direction is the first direction and the x-axis direction is the second direction. The mechanical performance testing system includes a base 100, a bracket 200 and a clamping module 300. The bracket 200 is fixedly mounted on the base 100 and extends along the first direction. For example, the bracket 200 includes two support rods 210, which are spaced apart on the base 100 in the second direction.

[0024] The clamping module 300 includes an upper clamping module 310 and a lower clamping module 320 disposed opposite to each other in a first direction. The lower clamping module 320 is disposed on the base 100. The lower clamping module 320 can be fixed in the first direction or can be slidably connected to the bracket 200 to move in the first direction; this is not limited here. The upper clamping module 310 is slidably connected to the bracket 200 and can move in the first direction to approach or move away from the lower clamping module 320. (Referring to...) Figure 2 The upper clamping module 310 includes two first clamping portions 3110 and two first telescopic portions 3120. The two first clamping portions 3110 have the same shape and can move in the second direction to adapt to each other and fit together or move away. The two first clamping portions 3110 are hollow structures. The two first telescopic portions 3120 are respectively disposed inside the two first clamping portions 3110 and can move relative to the first clamping portions 3110 in the first and second directions. The two first telescopic portions 3120 have the same shape. The lower clamping module 320 includes two second clamping parts 3210 and two second telescopic parts 3220. The two second clamping parts 3210 have the same shape. The two second clamping parts 3210 can move in the second direction to adapt to each other and fit together or move away from each other. The two second clamping parts 3210 have a hollow structure. The two second telescopic parts 3220 are respectively disposed inside the two second clamping parts 3210 and can move relative to the second clamping parts 3210 in the first direction and the second direction. The two second telescopic parts 3220 have the same shape.

[0025] It is understood that the movement of the upper clamping module 310, the lower clamping module 320, and the various components in the upper clamping module 310 and the lower clamping module 320 in the above embodiments is achieved by driving a drive device. The drive device can be an electric drive device, a pneumatic drive device, etc., which will not be described in detail below. In addition, "adaptive fit" means that when the two first clamping parts 3110 are fitted together, they can form a whole. The two first clamping parts 3110 are symmetrically arranged with their mutually fitting surfaces as symmetrical faces. The two second clamping parts 3210 are similarly arranged, that is, the two opposite surfaces of the two first clamping parts 3110 have the same shape and size, and the two opposite surfaces of the two second clamping parts 3210 have the same shape and size. The two first telescopic parts 3120 can be configured to be mutually adaptable fit together, or they can be configured to have a set distance even when they are closest to each other, both of which are within the protection scope of this application.

[0026] For example, such as Figure 2 As shown, both the first clamping part 3110 and the second clamping part 3210 are configured as semi-cylinders. When the two first clamping parts 3110 are attached together, they form a cylinder. When the two second clamping parts 3210 are attached together, they form a cylinder. Both the first telescopic part 3120 and the second telescopic part 3220 are configured as cuboid structures. In another embodiment, the first clamping part 3110 and the second clamping part 3210 can also be configured as cube structures or frustum structures. The first telescopic part 3120 and the second telescopic part 3220 can be configured as semi-cylinder structures or triangular pyramid structures. No limitation is made here.

[0027] In this embodiment, the clamping module 300 includes an upper clamping module 310 and a lower clamping module 320 that are relatively disposed and movable in a first direction. The two first clamping portions 3110 of the upper clamping module 310 and the two second clamping portions 3210 of the lower clamping module 320 can be engaged or disengaged in a second direction. The two first clamping portions 3110 and the two second clamping portions 3210 can respectively clamp both ends of the sample 10 for tensile property testing. Two first telescopic portions 3120 disposed inside the two first clamping portions 3110 can move in both the first and second directions. The two first telescopic portions 3120 disposed inside the two second clamping portions 3110 can move in both directions. The two second telescopic portions 3220 inside 210 can move in the first and second directions. The two first clamping portions 3110 and the two second clamping portions 3210 can also be merged into one unit to cooperate with the first telescopic portion 3120 and the second telescopic portion 3220 to perform compression performance testing on the sample 10. In addition, the two first clamping portions 3110 can be merged and the two second clamping portions 3210 can be separated to cooperate with the extended first telescopic portion 3120 and the second telescopic portion 3220 to perform bending performance testing. Multiple mechanical performance tests are realized through one device, which improves testing efficiency and saves testing costs.

[0028] In one embodiment, such as Figure 1As shown, the bracket 200 includes two support rods 210 spaced apart in a second direction. Both support rods 210 are fixedly mounted on the base 100 and extend along a first direction. First slide rails 2110 are respectively provided on two opposite surfaces of the two support rods 210, each extending along the first direction. The mechanical performance testing system also includes a first driving device (not shown) and a crossbeam 220. The crossbeam 220 extends along the second direction and is positioned between the two support rods 210. Both ends of the crossbeam 220 are slidably connected to the two first slide rails 2110. The device is installed inside the support rod 210, which protects the first drive device from external environmental influences. The output end of the first drive device is connected to both ends of the crossbeam 220 to drive the crossbeam 220 to move on the first slide rail. For example, the two ends of the crossbeam 220 are provided with sliders that cooperate with the slide rail. The two sliders are connected to the two output ends of the first drive device. The first drive device can drive the crossbeam 220 to move or stop moving in the first direction, or fix it in a certain position, thereby driving the upper clamping module 310 to move and stop in the first direction.

[0029] In this embodiment, by setting a crossbeam 220 between the two support rods 210, and connecting the first driving device to both ends of the crossbeam 220, the stability of the upper clamping module 310 during movement is ensured, shaking is avoided, and the accuracy of the mechanical performance test results is guaranteed.

[0030] In one embodiment, such as Figure 1 As shown, a second slide rail (not shown in the figure) is provided on the side of the crossbeam 220 facing the base 100. The second slide rail extends along the second direction, and the upper clamping module 310 is slidably connected to the second slide rail. The mechanical performance testing system also includes a second driving device (not shown in the figure). The second driving device is provided on the crossbeam 220. For example, the crossbeam 220 is a hollow structure, and the second driving device is provided inside the crossbeam 220. The output end of the second driving device is connected to both first clamping parts 3110 of the upper clamping module 310 to drive the two first clamping parts 3110 to move on the second slide rail.

[0031] A third slide rail 110 is provided on the side of the base 100 facing the crossbeam 220. The third slide rail 110 extends along the second direction. The two second clamping parts 3210 of the lower clamping module 320 are slidably connected to the third slide rail 110. The mechanical performance testing system also includes a third driving device (not shown in the figure). The third driving device is provided in the base 100, for example, inside the base 100. The output end of the third driving device is connected to both second clamping parts 3210 to drive the two second clamping parts 3210 to move on the third slide rail 110.

[0032] It should be noted that the movement of the two first clamping parts 3110 on the second slide rail can be either closer to or farther from each other. The midpoint of the crossbeam 220 in the second direction serves as the dividing point. The first clamping part 3110 on the left can only move to the left side of the second slide rail, and the first clamping part on the right can only move to the right side of the second slide rail. The left and right sides are only used to distinguish the two first clamping parts 3110 and do not restrict their actual orientation. A limiting member can be set inside the second slide rail as the dividing point, or the second slide rail can be directly divided into two slide rails with a preset distance between them. However, this preset distance must ensure that the two first clamping parts 3110 can fit together. The arrangement of the second clamping part 3210 and the third slide rail 110 is similar and will not be described again here.

[0033] In this embodiment, by setting the second slide rail and the third slide rail 110 and the corresponding driving device, the first clamping part 3110 and the second clamping part 3210 are moved in the second direction, which makes it convenient to adjust the position of the first clamping part 3110 and the second clamping part 3210 in a timely manner according to the size of the sample 10, thereby improving the application range of the mechanical property testing system.

[0034] In one embodiment, such as Figure 2 As shown, the upper clamping module 310 also includes two first connecting parts 3130, and the lower clamping module 320 also includes two second connecting parts 3230. The two first connecting parts 3130 are respectively disposed between the two first clamping parts 3110 and the output end of the driving device. Similarly, the two second connecting parts 3230 are respectively disposed between the two second clamping parts 3210 and the output end of the driving device. The driving device drives the first clamping parts 3110 and the second clamping parts 3210 by driving the connecting parts.

[0035] In this embodiment, by providing the first connecting part 3130 and the second connecting part 3230, the output end of the driving device is prevented from being directly connected to the first clamping part 3110 and the second clamping part 3210. Force is transmitted through the first connecting part 3130 and the second connecting part 3230, making the movement process more stable, and the first clamping part 3110 and the second clamping part 3210 are less likely to be deformed or damaged.

[0036] In one embodiment, such as Figure 1 and Figure 2As shown, the first clamping part 3110 has a first through hole (not shown) and a fourth slide rail (not shown) on the side facing the lower clamping module 320. The first through hole extends along a first direction and is adapted to the first telescopic part 3120. The adaptation here means that the cross-section of the first through hole is slightly larger than the cross-section of the first telescopic part 3120. While ensuring that the first through hole does not restrict the movement of the first telescopic part 3120 in the first direction, it can also limit the movement of the first telescopic part 3120. The fourth slide rail extends along a second direction. The mechanical performance testing system also includes a fourth driving device (not shown). The fourth driving device is disposed in the first clamping part 3110. The output end of the fourth driving device is connected to the first telescopic part 3120 to drive the two first telescopic parts 3120 to extend or retract in the first through hole or move on the fourth slide rail.

[0037] The second clamping part 3210 has a second through hole and a fifth slide rail 3240 on the side facing the upper clamping module 310. The second through hole extends along the first direction and is adapted to the second telescopic part 3220. The adaptation means that the cross-section of the second through hole is slightly larger than the cross-section of the second telescopic part 3220. While ensuring that the second through hole does not restrict the movement of the second telescopic part 3220 in the second direction, it can also limit the movement of the second telescopic part 3220. The fifth slide rail 3240 extends along the second direction. The mechanical performance testing system also includes a fifth driving device 3250 (not shown in the figure). The fifth driving device 3250 is disposed on the second clamping part 3210. The output end of the fifth driving device 3250 is connected to the second telescopic part 3220 to drive the two second telescopic parts 3220 to extend and retract in the second through hole or move on the fifth slide rail 3240.

[0038] Understandably, the first clamping part 3110 is configured as a hollow structure, with a first through hole and a fourth slide rail on the surface of the first clamping part 3110, and the fourth driving device is disposed inside the first clamping part 3110; the second clamping part 3210 is configured as a hollow structure, with a second through hole and a fifth slide rail 3240 on the surface of the second clamping part 3210, and the fifth driving device 3250 is disposed inside the second clamping part 3210.

[0039] In this embodiment, by providing through holes, slide rails, and a driving device, when the first telescopic part 3120 and the second telescopic part 3220 are not needed, they can retract into the first clamping part 3110 and the second clamping part 3210 without affecting their normal use. When the first telescopic part 3120 and the second telescopic part 3220 are needed, they can extend from the first clamping part 3110 and the second clamping part 3210 and move in the first and second directions, thus improving the flexibility of the mechanical performance testing system.

[0040] In one embodiment, such as Figure 2 As shown, the two opposing surfaces (the two surfaces that can fit together) of the two first clamping parts 3110 are planar and perpendicular to the second direction; the two opposing surfaces (the two surfaces that can fit together) of the two second clamping parts 3210 are planar and perpendicular to the second direction; and / or, the two opposing surfaces (the two surfaces that can fit together) of the two first telescopic parts 3120 are planar and perpendicular to the second direction; the two opposing surfaces (the two surfaces that can fit together) of the two second telescopic parts 3220 are planar and perpendicular to the second direction.

[0041] In this embodiment, by setting the opposing surfaces of the clamping part and the opposing surfaces of the telescopic part as planes, it is easy to combine the clamping part and the telescopic part into a whole. At the same time, the plane will not damage the sample 10 when clamping the sample 10, thus avoiding affecting the accuracy of the mechanical performance test results.

[0042] In another embodiment, the two opposing surfaces (two surfaces that can fit together) of the two first clamping portions 3110 are configured as serrated edges that can interlock; the two opposing surfaces (two surfaces that can fit together) of the two second clamping portions 3210 are configured as serrated edges that can interlock; and / or, the two opposing surfaces (two surfaces that can fit together) of the two first telescopic portions 3120 are configured as serrated edges that can interlock; the two opposing surfaces (two surfaces that can fit together) of the two second telescopic portions 3220 are configured as serrated edges that can interlock.

[0043] With this design, the serrated clamping and telescopic parts can increase the pressure on the sample 10 by reducing the force-bearing area, making the clamping or fixing more stable.

[0044] In one embodiment, such as Figure 1 and Figure 2As shown, when a tensile property test is required on the specimen 10, the two first telescopic parts 3120 and the two second telescopic parts 3220 retract into the two first clamping parts 3110 and the two second clamping parts 3210, respectively. The two first clamping parts 3110 clamp the first end of the specimen 10, and the two second clamping parts 3210 clamp the second end of the specimen 10, so that the specimen 10 extends along the first direction. The first driving device is activated to drive the upper clamping module 310 away from the lower clamping module 320 along the first direction. During the process of moving away, the specimen 10 is stretched. For example, the stress at the time of fracture of the specimen 10 is measured by setting a stress sensor, and the deformation at the time of fracture is measured by setting a displacement sensor to determine the tensile properties of the material.

[0045] In this embodiment, tensile performance testing in mechanical performance testing is achieved by simply moving the first clamping part 3110, the second clamping part 3210, the first telescopic part 3120, and the second telescopic part 3220.

[0046] In one embodiment, such as Figure 1 and Figure 2 As shown, when a compression performance test is required, two first clamping parts 3110 are fitted together to form a first pressure plate, and two second clamping parts 3210 are fitted together to form a second pressure plate. The two end faces of the sample 10, which are arranged opposite each other in the first direction, are located at the junction of the two first clamping parts 3110 and the junction of the two second clamping parts 3210, respectively. The plane on which the sample 10 is located is perpendicular to the second direction to ensure that the sample 10 is located in the middle of the first and second pressure plates and to ensure uniform force distribution. Two first telescopic parts 3120 clamp the first end of the sample 10, and two second telescopic parts 3220 clamp the second end of the sample 10. At the end, and in the first direction, the sum of the length of the first telescopic part 3120 extending out of the first clamping part 3110 and the length of the second telescopic part 3220 extending out of the second clamping part 3210 is less than the length of the sample 10, so as to ensure that the middle section of the sample 10 is not covered by the first telescopic part 3120 and the second telescopic part 3220. The first driving device is activated to drive the first pressure plate to approach the second pressure plate in the first direction. During the approach process, the sample 10 is compressed until the middle section of the sample 10 breaks. For example, the stress at the time of sample 10 breakage is measured by setting a stress sensor to determine the compressibility of the material.

[0047] It should be noted that the function of the two first telescopic parts 3120 and the two second telescopic parts 3220 is to prevent the sample 10 from bending and becoming unstable during compression. When the sample 10 is not subjected to a force that causes it to bend, the two first telescopic parts 3120 and the two second telescopic parts 3220 only fit against the sample 10 and do not exert any force on the sample 10. That is, the distance between the two first telescopic parts 3120 in the second direction is slightly greater than the thickness of the sample 10 in the second direction, and the distance between the two second telescopic parts 3220 in the second direction is slightly greater than the thickness of the sample 10 in the second direction.

[0048] In this embodiment, the compression performance test in the mechanical performance test is realized by simply driving the first clamping part 3110, the second clamping part 3210, the first telescopic part 3120 and the second telescopic part 3220 to move.

[0049] In one embodiment, such as Figure 1 and Figure 2 As shown, when a bending performance test is required, the two second telescopic portions 3220 extend relative to the two second clamping portions 3210 under the drive of the fifth driving device 3250. In the second direction, the distance between the two second telescopic portions 3220 is adapted to the length of the sample 10, that is, the distance between the two opposite surfaces of the two second telescopic portions 3220 is slightly greater than the length of the sample 10 in the second direction, so that the two ends of the sample 10 along the second direction are placed on the two second clamping portions 3210, and the two ends of the sample 10 are in contact with the two second telescopic portions 3220 respectively. The plane where the sample 10 is located is perpendicular to the first direction, and the middle section of the sample 10 is suspended. The two first clamping portions 3110 are attached together, and the two first telescopic portions 3120 are attached together to form a pressure member. In the second direction, the pressure member is located at the midpoint of the sample 10. The first driving device is activated to drive the pressure member to approach the sample 10 along the first direction and apply pressure to the middle section of the sample 10. For example, the bending performance of the material is determined by measuring the stress when the sample 10 breaks by setting a stress sensor.

[0050] It should be noted that the end of the pressure member formed by the two first telescopic parts 3120 that contacts the sample 10 has a gradually smaller cross-sectional area compared to the end away from the sample 10. The part of the pressure member that contacts the sample 10 is rounded to avoid sharp corners damaging the sample 10 during the pressure process and affecting the accuracy of the test results. In addition, when the sample 10 is not subjected to a force that causes it to bend, the two second telescopic parts 3220 only contact the sample 10 and do not exert any force on the sample 10.

[0051] In this embodiment, the bending performance test in the mechanical performance test is realized by simply driving the first clamping part 3110, the second clamping part 3210, the first telescopic part 3120 and the second telescopic part 3220 to move.

[0052] In one embodiment, such as Figure 1 and Figure 2 As shown, when an in-plane shear performance test is required, the specimen 10 is stretched at a specific angle (e.g., 45°) by two first clamping modules 300 and two second clamping modules 300, and the in-plane shear strength is indirectly calculated and determined. When an inter-plane shear performance test is required, the setup of the specimen 10 and the clamping modules 300 is the same as that for the bending performance test, and will not be described again here. If the specimen 10 fails under interlaminar shear (i.e., transverse cracks appear on the side of the specimen 10 along the interlaminar interface, without obvious bending fracture), the test is valid, and the inter-plane shear performance of the specimen 10 is determined.

[0053] In one embodiment, such as Figure 1 and Figure 2 As shown, gyroscopes are provided in the upper clamping module 310 and the lower clamping module 320 to adjust the two first clamping parts 3110 and the two second clamping parts 3210 to be in a balanced position; an infrared centering device is provided on the bracket 200 to facilitate the determination of the center position.

[0054] In one embodiment, such as Figure 3 As shown, the mechanical performance testing system also includes a drone 400, which is used to transport the sample 10 to the clamping module 300. The drone 400 includes a body 410, a robotic arm 420, and a clamp 430. The first end of the robotic arm 420 is fixedly connected to the body 410, and the second end of the robotic arm 420 is connected to the clamp 430. The body 410 is equipped with a multi-rotor power module 4110 for flight. The robotic arm 420 is used to change the clamping angle of the clamp 430 on the sample 10, and the clamp 430 is used to clamp the sample 10.

[0055] In this embodiment, by setting up a drone 400 to hold and transport the sample 10, the sample fragments after mechanical property testing can also be transported away from the test site, which greatly saves manpower and avoids the operational errors caused by manual sample loading.

[0056] In one embodiment, such as Figure 1 As shown, the robotic arm 420 includes a six-degree-of-freedom robotic arm 420, and the gripper 430 includes a pressure sensor array. For example, the gripping force corresponding to the sample 10 of different materials, shapes and sizes is determined by a neural network model. When the gripper 430 grips, the pressure of the gripper 430 on the sample 10 is detected in real time by the pressure sensor array, and the gripping force is adjusted accordingly.

[0057] In this embodiment, by setting up a high-degree-of-freedom robotic arm 420, in conjunction with a clamp 430 that can adaptively grasp the force, damage to the sample 10 is avoided, providing a basis for subsequent mechanical property testing.

[0058] In this invention, a drone 400 picks up the sample 10 and transports it to the position of the clamping module 300. The shape and position of the upper and lower clamping modules 320 are adjusted according to the type of test to be performed. The drone 400 automatically loads the sample. After the test is completed, the test site is cleaned up by both drones and drones. The fully automated testing process is achieved by setting up a clamping module 300 capable of performing various mechanical property tests and a drone 400 in cooperation, which improves the testing efficiency and ensures the accuracy of the test.

[0059] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein.

Claims

1. A mechanical performance testing system, characterized in that, The mechanical performance testing system includes: Base; A bracket is fixedly mounted on the base, and the bracket extends along a first direction; The clamping module includes an upper clamping module and a lower clamping module disposed opposite to each other in the first direction. The lower clamping module is disposed on the base, and the upper clamping module is slidably connected to the bracket to move closer to or further away from the lower clamping module. The upper clamping module includes two first clamping parts and two first telescopic parts. The two first clamping parts move in a second direction to adapt to each other and fit together or move away from each other. The two first telescopic parts are respectively disposed inside the two first clamping parts and can move relative to the first clamping parts in the first and second directions. The lower clamping module includes two second clamping parts and two second telescopic parts. The two second clamping parts move in a second direction to adapt to each other and fit together or move away from each other. The two second telescopic parts are respectively disposed inside the two second clamping parts and can move relative to the second clamping parts in the first and second directions. The first direction is perpendicular to the second direction.

2. The mechanical property testing system according to claim 1, characterized in that, The bracket includes two support rods spaced apart in the second direction, and a first slide rail is provided on two opposite surfaces of the two support rods, with each first slide rail extending along the first direction. The mechanical performance testing system further includes a first driving device and a crossbeam. The crossbeam extends along the second direction and is disposed between the two support rods. Both ends of the crossbeam are slidably connected to the two first slide rails respectively. The output end of the first driving device is connected to both ends of the crossbeam to drive the crossbeam to move on the first slide rails.

3. The mechanical property testing system according to claim 2, characterized in that, A second slide rail is provided on the side of the crossbeam facing the base, the second slide rail extends along the second direction, and the upper clamping module is slidably connected to the second slide rail; The mechanical performance testing system also includes a second driving device, which is disposed on the crossbeam. The output end of the second driving device is connected to the upper clamping module to drive the two first clamping parts to move on the second slide rail. A third slide rail is provided on the side of the base facing the crossbeam. The third slide rail extends along the second direction, and the lower clamping module is slidably connected to the third slide rail. The mechanical performance testing system also includes a third driving device, which is disposed on the base. The output end of the third driving device is connected to the lower clamping module to drive the two second clamping parts to move on the third slide rail.

4. The mechanical property testing system according to claim 1, characterized in that, The first clamping part is provided with a first through hole and a fourth slide rail on the side facing the lower clamping module. The first through hole extends along the first direction, and the fourth slide rail extends along the second direction. The mechanical performance testing system further includes a fourth driving device, which is disposed at the first clamping part. The output end of the fourth driving device is connected to the first telescopic part to drive the two first telescopic parts to extend and retract in the first through hole or move on the fourth slide rail. The second clamping part is provided with a second through hole and a fifth slide rail on the side facing the upper clamping module. The second through hole extends along the first direction, and the fifth slide rail extends along the second direction. The mechanical performance testing system further includes a fifth driving device, which is disposed in the second clamping part. The output end of the fifth driving device is connected to the second telescopic part to drive the two second telescopic parts to extend and retract in the second through hole or move on the fifth slide rail.

5. The mechanical property testing system according to claim 1, characterized in that, The two opposing surfaces of the two first clamping portions are planes and are both perpendicular to the second direction; the two opposing surfaces of the two second clamping portions are planes and are both perpendicular to the second direction. And / or, the two opposite surfaces of the two first telescopic portions are planes and both are perpendicular to the second direction, and the two opposite surfaces of the two second telescopic portions are planes and both are perpendicular to the second direction.

6. The mechanical property testing system according to any one of claims 1 to 5, characterized in that, The two first telescopic parts and the two second telescopic parts retract into the two first clamping parts and the two second clamping parts respectively. The two first clamping parts clamp the first end of the sample, and the two second clamping parts clamp the second end of the sample. The upper clamping module is driven away from the lower clamping module along the first direction to perform tensile performance testing.

7. The mechanical property testing system according to any one of claims 1 to 5, characterized in that, Two first clamping parts are attached together to form a first pressure plate, and two second clamping parts are attached together to form a second pressure plate. The two end faces of the sample, which are arranged opposite each other in the first direction, are located at the junction of the two first clamping parts and the junction of the two second clamping parts, respectively. Two first telescopic portions clamp the first end of the sample, and two second telescopic portions clamp the second end of the sample. In the first direction, the sum of the length of the first telescopic portion extending out of the first clamping portion and the length of the second telescopic portion extending out of the second clamping portion is less than the length of the sample. The first pressure plate is driven to approach the second pressure plate along the first direction to perform a compression performance test.

8. The mechanical property testing system according to any one of claims 1 to 5, characterized in that, Two second telescopic portions extend relative to two second clamping portions. In the second direction, the distance between the two second telescopic portions is adapted to the length of the sample, so that both ends of the sample along the second direction are placed on the two second clamping portions, and both ends of the sample are in contact with the two second telescopic portions respectively. The two first clamping parts are fitted together, and the two first telescopic parts are fitted together to form a pressure member. In the second direction, the pressure member is located at the midpoint of the sample. The pressure member is driven to approach the sample along the first direction and apply pressure to the sample to perform a bending performance test.

9. The mechanical property testing system according to claim 1, characterized in that, The mechanical performance testing system also includes a drone, which is used to transport the sample to the clamping module. The drone includes a body, a robotic arm, and a clamp, wherein the first end of the robotic arm is fixedly connected to the body, the second end of the robotic arm is connected to the clamp, and the body is equipped with a multi-rotor power module for flight.

10. The mechanical property testing system according to claim 9, characterized in that, The robotic arm includes a six-degree-of-freedom robotic arm, and the clamp includes a pressure sensor array for real-time detection of the pressure exerted by the clamp on the sample.

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