A tensile strength testing device for carbon fiber plates

Abstract

The present invention discloses a tensile strength testing device for carbon fiber panels, relating to the technical field of carbon fiber panel testing. The device comprises a stretching mechanism, a connecting plate, a clamping mechanism, and an adjustment mechanism. The carbon fiber panel sample is fixed at both ends to the clamping mechanism, which comprises a set of fixtures with identical structures and correspondingly arranged. One end of the connecting plate is fixed to the driving end of the stretching mechanism, and the adjustment mechanism is mounted on the connecting plate and arranged correspondingly to the carbon fiber panel sample. The adjustment mechanism comprises a lifting module, a feed module, and an adjustment module. The lifting module and the feed module are used to adjust the position of the adjustment module, and the adjustment module is used to control the temperature and humidity of the carbon fiber panel sample. In addition to general tensile testing, the present invention allows for free adjustment of temperature and humidity variables, improving the flexibility and comprehensiveness of performance testing.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber plate testing, in particular to a tensile strength testing device for carbon fiber plates. Background Art

[0002] Carbon fiber sheeting is formed by impregnating and curing carbon fibers aligned in the same direction with resin. It effectively solves the difficulties and labor-intensive construction issues of multi-layer carbon fiber cloth, offering excellent reinforcement and convenient construction. Made from high-quality carbon fiber and a superior base resin, carbon fiber sheeting exhibits high tensile strength, corrosion resistance, seismic resistance, and impact resistance.

[0003] The tensile test of carbon fiber plates is an important material mechanical property test, which is used to evaluate the tensile behavior of carbon fiber plates under stress and obtain key mechanical performance parameters such as strength, ductility and elastic modulus.

[0004] The current device used for tensile testing of carbon fiber sheets is a standard tensile testing machine. By fixing the ends of the carbon fiber sheet with clamps, an external force is applied to one side, and the deformation state of the carbon fiber sheet is observed to determine its tensile performance. However, the tensile performance of carbon fiber sheets is highly correlated with temperature and humidity. When these conditions need to be adjusted, manual application is required, which is very inconvenient. Summary of the Invention

[0005] The object of the present invention is to provide a tensile strength testing device for carbon fiber plates to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a tensile strength testing device for carbon fiber plates, comprising a stretching mechanism, a connecting plate, a clamping mechanism and an adjustment mechanism. Both ends of the carbon fiber plate sample are fixed on the clamping mechanism. The clamping mechanism includes a group of clamps with the same structure and arranged corresponding to each other. The clamp located on the upper side is fixedly connected to the connecting plate. One end of the connecting plate is fixed to the driving end of the stretching mechanism. The adjustment mechanism is installed on the connecting plate and is arranged corresponding to the carbon fiber plate sample.

[0007] According to the above technical solution, the adjustment mechanism includes a lifting module, a feeding module and an adjustment module, wherein the feeding module is arranged at the driving end of the lifting module, and the adjustment module is arranged at the driving end of the feeding module. The lifting module and the feeding module are used to adjust the position of the adjustment module, and the adjustment module is used to control the temperature and humidity of the carbon fiber plate sample.

[0008] According to the above technical solution, the adjustment module includes a mounting frame, an outer cylinder is fixed on the mounting frame, a rotating cylinder is rotatably arranged on the mounting frame, the rotating cylinder rotates in conjunction with the outer cylinder, an inner cylinder is arranged in the rotating cylinder, and a water pipe is passed through the inner cylinder.

[0009] According to the above technical solution, the outer cylinder is a hollow shell with an opening on one side and is arranged as a semicircular structure. The outer cylinder is connected to a gas transmission device. The rotating cylinder is arranged as an arc structure larger than the semicircle. The outer diameter of the rotating cylinder matches the inner diameter of the outer cylinder, and there is a distance between the rotating cylinder and the inner cylinder.

[0010] According to the above technical solution, the water supply pipe is connected to a water tank, and several partitions are arranged at intervals in the inner tube. Each partition divides the space in the inner tube into independent areas. Several nozzles are arranged on the water supply pipe, and each nozzle corresponds to each independent area. The inner tube is provided with a water outlet corresponding to each independent area, and the height of the water outlet is higher than the height of the closed side of the outer tube.

[0011] According to the above technical solution, a pressure sensing module is provided on the surface of the outer cylinder, which is used to determine the width range of the carbon fiber plate sample according to the detected pressure value.

[0012] According to the above technical solution, a rack is provided on one surface of the rotating drum, the rack is matched with a gear 1, and the gear 1 is connected to a driver 1.

[0013] According to the above technical solution, a liquid level sensing module is provided on the inner wall of the inner cylinder to detect the height of the internal liquid.

[0014] According to the above technical solution, the lifting module includes a second driver, a track, a screw and a slider. The second driver is fixed on the connecting plate, the track is fixed on the lower side of the connecting plate, one end of the screw is connected to the driving end of the second driver, and the other end of the screw is rotatably set in the track. The slider is mounted on the screw and slides with the track.

[0015] According to the above technical solution, the feeding module includes a set of screw 2, gear 2 and driver 4. Screw 2 is rotatably installed on the slider and one end is connected to the mounting frame bearing. Gear 2 is rotatably set on one side of the slider and cooperates with screw 2. Driver 4 is connected to gear 2.

[0016] According to the above technical solution, the clamp includes a fixed seat, a pressure rod is fixed on the fixed seat, a driver five is fixed on one side of the fixed seat, a screw three is connected to the driving end of the driver five, a movable frame is provided on one end of the screw three passing through the fixed seat, a pressure block is fixed on the movable frame facing the pressure rod side, and a plurality of sliding grooves for cooperating with the sliding of the pressure block are provided on the upper side surface of the fixed seat.

[0017] According to the above technical solution, the pressing block includes two side pressing blocks and one middle pressing block, wherein the side pressing blocks are fixedly connected to the movable frame respectively, and the connecting surface between the middle pressing block and the side pressing block is paved with an electromagnetic unit.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: by providing an adjustment module, the present invention can freely adjust the temperature and humidity of the carbon fiber plate sample in the stretched state, which can meet the tensile test under different conditions and has strong flexibility; by providing a feeding module, the adjustment module can be used as a lateral pressing tool to perform a rebound test on the carbon fiber plate sample in the stretching process, making the performance test more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the testing device of the present invention;

[0021] Figure 2 It is a partial schematic diagram of the testing device of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the adjustment mechanism of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the feed module of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the regulating module of the present invention;

[0025] Figure 6 is a transverse cross-sectional view of the adjustment module of the present invention;

[0026] Figure 7 is a longitudinal sectional view of the regulating module of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the clamp of the present invention;

[0028] Figure 9 It is a schematic structural diagram of the briquette of the present invention;

[0029] Figure: 1. Stretching mechanism; 2. Connecting plate; 3. Clamping mechanism; 31. Fixed seat; 311. Slide; 32. Pressure rod; 33. Driver 5; 34. Screw 3; 35. Moving frame; 36. Pressure block; 361. Side pressure block; 362. Middle pressure block; 4. Adjusting mechanism; 41. Lifting module; 411. Driver 2; 412. Track 1; 413. Screw 1; 414. Slider; 42. Feeding module; 421. Screw 2; 422 , gear two; 423, driver four; 43, adjustment module; 431, mounting bracket; 432, outer cylinder; 4321, pressure sensing module; 433, rotating cylinder; 4331, partition two; 4332, rack; 434, inner cylinder; 4341, partition one; 4342, water outlet; 435, water pipe; 4351, nozzle; 436, air supply device; 437, water tank; 438, gear one; 439, driver one; 5, carbon fiber plate sample. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1-9 The present invention provides a technical solution: a tensile strength testing device for a carbon fiber plate, comprising a stretching mechanism 1, a connecting plate 2, a clamping mechanism 3, and an adjusting mechanism 4. Both ends of a carbon fiber plate sample 5 are fixed to the clamping mechanism 3. The clamping mechanism 3 includes a group of clamps with the same structure and arranged corresponding to each other. The clamp located on the upper side is fixedly connected to the connecting plate 2. One end of the connecting plate 2 is fixed to the driving end of the stretching mechanism 1. The adjusting mechanism 4 is installed on the connecting plate 2 and is arranged corresponding to the carbon fiber plate sample 5.

[0032] The regulating mechanism 4 includes a lifting module 41, a feeding module 42, and an adjusting module 43, wherein the feeding module 42 is provided at the driving end of the lifting module 41, and the adjusting module 43 is provided at the driving end of the feeding module 42. The lifting module 41 and the feeding module 42 are used to adjust the position of the adjusting module 43, and the adjusting module 43 is used to control the temperature and humidity of the carbon fiber plate sample 5;

[0033] Specifically, the adjustment module 43 includes a mounting frame 431, an outer cylinder 432 is fixed on the mounting frame 431, a rotating cylinder 433 is rotatably provided on the mounting frame 431, the rotating cylinder 433 rotates in conjunction with the outer cylinder 432, an inner cylinder 434 is provided in the rotating cylinder 433, and a water pipe 435 is passed through the inner cylinder 434.

[0034] The supplementary explanation based on the above structure is as follows: Figures 5-7 As shown, outer cylinder 432 is a hollow shell with one side open and configured as a semicircular structure. A gas delivery device 436 is externally connected to outer cylinder 432, and rotating cylinder 433 is configured as an arc-shaped structure larger than the semicircle. The outer diameter of rotating cylinder 433 matches the inner diameter of outer cylinder 432, and there is a distance between rotating cylinder 433 and inner cylinder 434. When rotating cylinder 433 rotates to align with the closed side of outer cylinder 432, the outer cylinder 432 and rotating cylinder 433 form a sealed cylinder isolated from the outside world. An airflow channel is formed between outer cylinder 432 and rotating cylinder 433 relative to inner cylinder 434. When rotating cylinder 433 rotates and disengages from the closed side of outer cylinder 432, the airflow channel opens, and the internal airflow is sprayed onto carbon fiber plate sample 5, regulating the surface temperature of carbon fiber plate sample 5 according to the different airflow temperatures.

[0035] Furthermore, the water supply pipe 435 is connected to a water tank 437, and several partitions 4341 are arranged at intervals in the inner tube 434. Each partition 4341 divides the space in the inner tube 434 into independent areas. Several nozzles 4351 are arranged on the water supply pipe 435, and each nozzle 4351 corresponds to each independent area. The inner tube 434 is provided with a water outlet 4342 corresponding to each independent area, and the height of the water outlet 4342 is higher than the height of the closed side of the outer tube 432.

[0036] A pressure sensing module 4321 is provided on the surface of the outer cylinder 432 for determining the width range of the carbon fiber plate sample 5 according to the detected pressure value range.

[0037] Supplementary explanation based on the above structure is as follows: According to the width of the carbon fiber plate sample 5, the corresponding nozzle 4351 is opened to inject water into the corresponding inner cylinder 434 space. When the rotating cylinder 433 and the outer cylinder 432 are opened, the water in the inner cylinder 434 overflows to the surface of the carbon fiber plate sample 5 through the water outlet 4342, thereby achieving the adjustment of its humidity.

[0038] Preferably, a second partition 4331 is provided inside the rotating drum 433 corresponding to the first partition 4341 to divide the internal space of the rotating drum 433.

[0039] In one embodiment, a rack 4332 is provided on one side surface of the rotating drum 433 , and the rack 4332 is cooperated with a gear 1 438 , and the gear 1 438 is connected to a driver 1 439 .

[0040] In actual operation, the driver 1 439 drives the gear 1 438 to rotate, thereby driving the rotating drum 433 to rotate in the forward or reverse direction, and finally realizing the opening and closing between the rotating drum 433 and the outer drum 432.

[0041] Preferably, a liquid level sensing module is provided on the inner wall of the inner cylinder 434 for detecting the height of the internal liquid.

[0042] like Figure 3As shown, the lifting module 41 includes a second driver 411, a track 412, a screw 413 and a slider 414. The second driver 411 is fixed on the connecting plate 2, the track 412 is fixed on the lower side of the connecting plate 2, one end of the screw 413 is connected to the driving end of the second driver 411, and the other end of the screw 413 is rotatably set in the track 412. The slider 414 is sleeved on the screw 413 and slides with the track 412.

[0043] like Figure 4 As shown, the feed module 42 includes a second screw 421, a second gear 422, and a fourth driver 423. The second screw 421 is rotatably mounted on the slider 414 and has one end connected to a bearing on the mounting bracket 431. The second gear 422 is rotatably mounted on the side of the slider 414 and engages with the second screw 421. The fourth driver 423 is connected to the second gear 422. It should be noted that the threads of the second gear 422 mesh with the second screw 421, so that the rotational motion of the second gear 422 can be converted into the linear motion of the second screw 421. This conversion is achieved through the interaction between the gear teeth and the screw threads.

[0044] In actual operation, the lifting module 41 drives the slider 414 to move up and down in the track 1 412 through the form of motor screw drive, and the driver 423 drives the gear 2 422 to rotate, so that the screw 2 421 rotates synchronously. According to the different rotation directions of the screw 2 421, the screw 2 421 is pulled back or pushed out of the mounting bracket 431 relative to the slider 414, so that the mounting bracket 431 can be controlled to move closer to or away from the carbon fiber plate sample 5.

[0045] like Figure 8 As shown, the clamp includes a fixed base 31, a pressure rod 32 is fixed on the fixed base 31, a driver five 33 is fixed on one side of the fixed base 31, a driving end of the driver five 33 is connected to a screw three 34, and one end of the screw three 34 passing through the fixed base 31 is sleeved with a movable frame 35, and a pressure block 36 is fixed on the movable frame 35 toward the side of the pressure rod 32, and a plurality of sliding grooves 311 for cooperating with the sliding of the pressure block 36 are provided on the upper surface of the fixed base 31.

[0046] Furthermore, in one embodiment, Figure 9 As shown, the pressing block 36 includes two side pressing blocks 361 and a middle pressing block 362 , wherein the side pressing blocks 361 are fixedly connected to the movable frame 35 , and the connecting surface between the middle pressing block 362 and the side pressing block 361 is paved with an electromagnetic unit.

[0047] Supplementary explanations based on the above structure are as follows: The clamping position of the carbon fiber sheet sample 5 can be adjusted based on the connection state of the side pressure blocks 361 and the middle pressure block 362. When the electromagnetic unit is de-energized, the side pressure blocks 361 and the middle pressure block 362 are separated. At this time, the driver 5 33 drives the screw 3 34 to rotate, causing the movable frame 35 to move the two side pressure blocks 361, thereby clamping the carbon fiber sheet sample 5 at both ends. When the electromagnetic unit is energized, the side pressure blocks 361 and the middle pressure block 362 are mutually attracted. At this time, the driver 5 33 drives the two side pressure blocks 361 toward the middle pressure block 362, so that they are attracted to each other and form a whole. It then drives the pressure block 36 toward the carbon fiber sheet sample 5 to clamp it on both sides. This allows the clamping mechanism 3 to change the clamping state of the carbon fiber sheet sample 5, namely, two-point tension and planar tension. By changing the clamping state and performing separate tensile tests, the tensile performance of the carbon fiber sheet sample 5 can be evaluated when the force is unevenly applied.

[0048] The stretching mechanism 1 adopts but is not limited to the form of a motor screw to drive the up and down movement of the connecting plate 2; preferably, the clamping mechanism 3 is provided with a visual detection module on the side relative to the thickness of the carbon fiber plate sample 5, which is used to detect the thickness deformation state of the carbon fiber plate sample 5 during the stretching process; the clamping mechanism 3 is provided with an infrared temperature measurement module on the side relative to the surface of the carbon fiber plate sample 5, which is used to detect the temperature value of the carbon fiber plate sample 5.

[0049] In Example 1, with other conditions remaining unchanged, the tensile test steps are as follows:

[0050] Step 1: Place the carbon fiber plate sample 5 into the fixture and fix it with the clamping mechanism 3;

[0051] Step 2: The stretching mechanism 1 adjusts the height of the upper clamp and, in conjunction with the visual inspection module, stretches the surface of the carbon fiber plate sample 5 to a flat state;

[0052] Step 3: The visual inspection module records the thickness of the carbon fiber plate sample 5 in the initial state, and the infrared temperature measurement module records the temperature value of the carbon fiber plate sample 5 in the initial state;

[0053] Step 4: Start the tensile test. The tensile mechanism 1 pulls the carbon fiber plate sample 5 upward at a certain rate, and the visual inspection module records its thickness deformation state.

[0054] Step 5: Recovery test: the stretching mechanism 1 returns to its initial state, the visual inspection module records the thickness change of the carbon fiber plate sample 5, compares it with the data before the test, and evaluates the tensile performance of the carbon fiber plate sample 5.

[0055] Specifically, in step 2, the visual inspection module records the standard thickness value of the carbon fiber plate sample 5 in advance, locks its position, and marks the edge of its lateral position. In the process of adjusting the flat state, the visual inspection module tracks the movement trajectory of each marking point, and the marking points eventually form two straight lines perpendicular to the horizontal plane. The distance between the two marking lines is the thickness of the carbon fiber plate sample 5. On the premise that the thickness of the carbon fiber plate sample 5 is consistent, the vertical straight line formed by the marking points is used as the basis for judging whether the carbon fiber plate sample 5 is in a flat state, and whether the distance between the two marking points on the same horizontal plane is consistent is used as the basis for judging whether the thickness of the carbon fiber plate sample 5 is standard.

[0056] In step five, after the stretching mechanism 1 is restored, the visual inspection module re-marks the positions of the two sides of the carbon fiber plate sample 5, compares them with the points before stretching, and evaluates the recovery performance of the carbon fiber plate sample 5 based on the position changes of each point.

[0057] Furthermore, ideally, the marking points before and after stretching should coincide with the initial positions and the thickness at each level should be consistent with the initial state. If the recovery performance of carbon fiber plate sample 5 is not ideal, the marking points may shift from the initial marking points and the thickness may be uneven.

[0058] Assume there are A markers. Set the absolute value of the distance the marker changes before and after stretching to x. Set the error margin a, and set a> 0. If 0≤x≤a, the marker is considered to be aligned before and after stretching. If x>a, the marker is considered to be offset before and after stretching.

[0059] Based on the above judgment, the number of offset points B is counted. B is compared with the total number of points A. The recovery performance of the carbon fiber plate sample 5 is rated according to the number of offsets of the marked points. The judgment limit is set manually.

[0060] Example 2, based on Example 1, adds temperature and humidity variables.

[0061] Specifically, only the temperature is adjusted. Before or during the stretching of the carbon fiber plate sample 5, the adjustment mechanism 4 approaches the surface of the carbon fiber plate sample 5. When the pressure sensing module 4321 detects the pressure value, it is determined that the adjustment module 43 has contacted the surface of the carbon fiber plate sample 5, the rotating cylinder 433 rotates to separate from the outer cylinder 432, and the air supply device 436 inputs an airflow of a certain temperature into the airflow channel, which is sprayed to the surface of the carbon fiber plate sample 5 from the opening of the rotating cylinder 433. The infrared temperature measurement module detects the temperature of the carbon fiber plate sample 5 until it reaches the set temperature, and the test steps of Example 1 are repeated.

[0062] Only the humidity is adjusted. The regulating mechanism 4 approaches the surface of the carbon fiber plate sample 5. According to the width value fed back by the pressure sensing module 4321, the required water injection area is determined. The corresponding nozzle 4351 is turned on to inject water into the independent area. At the same time, the drum 433 is turned on, and the water flows through the water outlet 4342 to overflow to the surface of the carbon fiber plate sample 5, thereby infiltrating the carbon fiber plate sample 5 and adjusting its humidity.

[0063] Based on the above adjustment methods, you can combine them according to actual needs to achieve flexible adjustment of temperature and humidity. For example:

[0064] Combination ①, low temperature and low humidity. Water is injected into the corresponding independent area within inner cylinder 434. The liquid level sensing module detects that the internal liquid has reached the height of water outlet 4342 and stops injecting water. A low-temperature airflow is introduced into the airflow channel, first cooling the liquid within inner cylinder 434. The temperature feedback from the circulating gas determines whether the liquid temperature has reached the set value. Rotating cylinder 433 is turned on, allowing the liquid to overflow onto the surface of carbon fiber plate sample 5, while the low-temperature gas is simultaneously sprayed onto the surface.

[0065] Combination ②, low temperature and high humidity. Based on combination ①, water is continuously injected into the inner cylinder 434 to a set volume. The amount of water in the inner cylinder 434 that can contact the carbon fiber plate sample 5 is equal to the total amount of water injected minus the total amount of water below the height of the water outlet 4342. This is used as a standard to calculate the amount of water injected onto the surface of the carbon fiber plate sample 5.

[0066] Combination ③, high temperature and low humidity. Based on combination ①, the gas temperature is switched to the set high temperature value.

[0067] Combination ④, high temperature and high humidity: Based on combination ②, the gas temperature is switched to the set high temperature value.

[0068] Example 3: Based on Example 1, a rebound resilience test is performed on a carbon fiber plate sample 5 in a stretched state with the aid of an adjustment mechanism 4.

[0069] Specifically, the visual inspection module records the position of the carbon fiber plate sample 5 before being pushed (its side is punctuated at intervals of a certain unit length), and the adjustment module 43 is pushed laterally toward the surface of the carbon fiber plate sample 5 for a certain distance. The visual inspection module records the position of the carbon fiber plate sample 5 again, and the adjustment module 43 is reset. The visual inspection module records the rebound state of the carbon fiber plate sample 5, and evaluates the rebound performance of the carbon fiber plate sample 5 based on the rebound speed and rebound degree.

[0070] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tensile strength testing device for carbon fiber plates, comprising a tensile mechanism (1), a connecting plate (2), a clamping mechanism (3) and an adjusting mechanism (4), characterized in that: Both ends of the carbon fiber plate sample (5) are fixed on the clamping mechanism (3), the clamping mechanism (3) comprises a group of clamps with the same structure and arranged corresponding to each other, the clamps located on the upper side are fixedly connected to the connecting plate (2), one end of the connecting plate (2) is fixed to the driving end of the stretching mechanism (1), and the adjusting mechanism (4) is installed on the connecting plate (2) and arranged corresponding to the carbon fiber plate sample (5); The regulating mechanism (4) includes a lifting module (41), a feeding module (42) and an regulating module (43), wherein the feeding module (42) is arranged at the driving end of the lifting module (41), and the regulating module (43) is arranged at the driving end of the feeding module (42); the lifting module (41) and the feeding module (42) are used to adjust the position of the regulating module (43); and the regulating module (43) is used to regulate the temperature and humidity of the carbon fiber plate sample (5); The regulating module (43) includes a mounting frame (431), an outer cylinder (432) is fixed on the mounting frame (431), a rotating cylinder (433) is rotatably provided on the mounting frame (431), the rotating cylinder (433) and the outer cylinder (432) are rotatably matched, an inner cylinder (434) is provided in the rotating cylinder (433), and a water pipe (435) is passed through the inner cylinder (434); The outer cylinder (432) is a hollow shell with an opening on one side and is configured as a semicircular structure. The outer cylinder (432) is externally connected to a gas delivery device (436). The rotating cylinder (433) is configured as an arc structure larger than the semicircle. The outer diameter of the rotating cylinder (433) matches the inner diameter of the outer cylinder (432). The rotating cylinder (433) and the inner cylinder (434) are spaced apart by a distance. The water delivery pipe (435) is externally connected to a water tank (437), and a plurality of partition plates (4341) are arranged at intervals in the inner cylinder (434), each of the partition plates (4341) divides the space in the inner cylinder (434) into independent areas. A plurality of nozzles (4351) are arranged on the water delivery pipe (435), and each of the nozzles (4351) corresponds to each independent area. The inner cylinder (434) is provided with a water outlet (4342) corresponding to each independent area, and the height of the water outlet (4342) is higher than the height of the closed side of the outer cylinder (432); A pressure sensing module (4321) is provided on the surface of the outer cylinder (432) for determining the width range of the carbon fiber plate sample (5) based on the detected pressure value; A rack (4332) is provided on one side surface of the rotating drum (433), and the rack (4332) is provided in conjunction with a gear one (438), and the gear one (438) is connected to a driver one (439).

2. A tensile strength testing device for carbon fiber plates according to claim 1, characterized in that: The lifting module (41) includes a second driver (411), a track (412), a screw (413) and a slider (414), wherein the second driver (411) is fixed on the connecting plate (2), the track (412) is fixed on the lower side of the connecting plate (2), one end of the screw (413) is connected to the driving end of the second driver (411), and the other end of the screw (413) is rotatably arranged in the track (412), and the slider (414) is sleeved on the screw (413) and slidably matched with the track (412).

3. A tensile strength testing device for carbon fiber plates according to claim 2, characterized in that: The feeding module (42) includes a set of screw rod 2 (421), gear rod 2 (422) and driver 4 (423), wherein the screw rod 2 (421) is rotatably mounted on the slider (414) and one end of the screw rod 2 is connected to the bearing of the mounting frame (431), the gear rod 2 (422) is rotatably mounted on one side of the slider (414) and cooperates with the screw rod 2 (421), and the driver 4 (423) is connected to the gear rod 2 (422).

4. A tensile strength testing device for carbon fiber plates according to claim 3, characterized in that: The clamp includes a fixed seat (31), a pressure rod (32) is fixed on the fixed seat (31), a driver five (33) is fixed on one side of the fixed seat (31), a driving end of the driver five (33) is connected to a screw three (34), one end of the screw three (34) passing through the fixed seat (31) is sleeved with a movable frame (35), the movable frame (35) is fixed with a pressure block (36) facing the side of the pressure rod (32), and a plurality of sliding grooves (311) for cooperating with the sliding of the pressure block (36) are opened on the upper surface of the fixed seat (31).

5. A tensile strength testing device for carbon fiber plates according to claim 4, characterized in that: The pressing block (36) includes two side pressing blocks (361) and a middle pressing block (362), wherein the side pressing blocks (361) are fixedly connected to the movable frame (35) respectively, and the connection surface between the middle pressing block (362) and the side pressing block (361) is paved with an electromagnetic unit.

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