Carbon fiber plate prestressing detection device and detection method

Abstract

The present invention discloses a carbon fiber plate prestress detection device and detection method, which are applied to the technical field of carbon fiber plate prestress detection, comprising a detection platform, a driving mechanism arranged on the left side of the detection platform and a clamping mechanism arranged inside the detection platform, wherein the driving mechanism is used to drive the carbon fiber plate on the tension and compression clamping mechanism to perform prestress detection, and the clamping mechanism is used to clamp the carbon fiber plate and adjust the clamping position of the carbon fiber plate; the clamping mechanism comprises a movable end and a fixed end, the movable end comprises a clamping assembly 1 and a tension and compression sensor, the clamping assembly 1 comprises a back plate, a bottom plate and a top plate fixedly connected to the back plate, and a clamping plate slidably connected to the back plate; a groove 1 is provided on the bottom plate, a slide 1 is arranged in the groove 1, the slide 1 is slidably connected to the bottom plate, and a pressure sensor is fixedly connected to the groove 1 of the bottom plate. The present invention can improve the stability of clamping during prestress detection of the carbon fiber plate.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber plate prestress detection, and in particular to a carbon fiber plate prestress detection device and a detection method. Background Art

[0002] Carbon fiber sheet, or carbon fiber reinforced unidirectional sheet, is a carbon fiber composite material made by impregnating and curing carbon fibers with resin, curing them in a mold, and then continuously stretching them. Carbon fiber sheet is lightweight, flexible, has high tensile strength, and offers excellent seismic, impact, and corrosion resistance. Compared to carbon fiber cloth, carbon fiber sheet offers superior reinforcement, avoiding the weakening of reinforcement and practical construction difficulties associated with stacking multiple layers of carbon cloth.

[0003] During the production process of carbon fiber boards, the formed carbon fiber boards need to be fixed and prestressed. When the carbon fiber boards are subjected to tensile testing during the prestressed testing process, the traditional testing device has a poor fixing effect. If the fixed position is offset, it needs to be manually readjusted and clamped. The operation is relatively cumbersome and it is easy for the carbon fiber boards to detach due to loose fixation, which affects the normal testing work. Summary of the Invention

[0004] The object of the present invention is to provide a carbon fiber plate prestress detection device and detection method, which can simplify the clamping process during carbon fiber plate prestress detection and improve the clamping stability, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a carbon fiber plate prestress detection device and detection method, comprising a detection platform, a driving mechanism arranged on the left side of the detection platform, and a clamping mechanism arranged inside the detection platform, wherein the driving mechanism is used to drive the carbon fiber plate on the tension and compression clamping mechanism to perform prestress detection, and the clamping mechanism is used to clamp the carbon fiber plate and adjust the clamping position of the carbon fiber plate;

[0006] The clamping mechanism includes a movable end and a fixed end, the movable end includes a clamping assembly 1 and a tension and compression sensor, the clamping assembly 1 includes a back plate, a bottom plate and a top plate fixedly connected to the back plate, and a clamping plate slidably connected to the back plate;

[0007] A groove 1 is provided on the bottom plate, a slide 1 is provided in the groove 1, the slide 1 is slidably connected to the bottom plate, a pressure sensor is fixedly connected in the groove 1 of the bottom plate, and a plurality of through slots 1 are provided on the slide 1;

[0008] A driving part three and a driving part four are fixedly connected to one side of the slide seat, a long rotating shaft and a plurality of short rotating shafts are arranged at intervals in the through slot one, and only a long rotating shaft or a short rotating shaft is arranged in the same through slot one, and the long rotating shaft and the short rotating shaft are both connected to the bearing of the slide seat one, a plurality of rollers one are fixedly connected to the long rotating shaft, and a roller two is fixedly connected to the short rotating shaft;

[0009] The pressure sensor corresponds to a position of the through slot, and the pressure sensor is electrically connected to a pressure module. The pressure module is used to obtain pressure data detected by the pressure sensor and determine the clamping position of the carbon fiber plate.

[0010] According to the above technical solution, the testing platform includes a support and a protective box fixed to the top of the support. The top of the protective box is hinged with a box cover, which can prevent fragments generated by stretching exercises from causing harm to workers.

[0011] According to the above technical solution, the driving mechanism includes a driving part and a screw rod. The driving part is fixed to the bottom surface of one side of the detection platform. The output end of the driving part is connected to the screw rod. The two ends of the screw rod pass through and are connected to the inner wall of the protective box with bearings. Guide columns are also fixedly connected on both sides of the protective box below the screw rod.

[0012] According to the above technical solution, the screw rod is threadedly connected to a transmission plate, the transmission plate is penetrated and slidably connected to the guide column, the surface of the transmission plate is slidably connected to a connecting member through a rod, and the connecting member is located on the side surface of the transmission plate away from the clamping component 1, and one end of the rod close to the clamping component 1 is fixedly connected to the clamping component 1, and the tension and compression sensor is fixed between the clamping component 1 and the transmission plate.

[0013] According to the above technical solution, the top plate is fixedly connected to the driving part 2, and two sets of screw rods 2 are connected with bearings between the bottom plate and the top plate, and the screw rods 2 are threadedly connected to the clamping plate;

[0014] The top of the bottom plate is fixedly connected to a plurality of anti-slip strips 1, the bottom of the slide 1 is fixedly connected to a plurality of springs 1, and the other end of the spring 1 is fixedly connected to the bottom plate;

[0015] The surfaces of the first and second rollers are both provided with an elastic anti-slip layer of a certain thickness.

[0016] According to the above technical solution, several anti-slip strips 2 are fixedly connected to the splint, and the positions of the anti-slip strips 2 and 1 correspond to each other. A groove 2 is provided at the bottom of the splint, and a slide seat 2 is provided in the groove 2. The slide seat 2 is slidably connected to the splint, and several springs 2 are fixedly connected to the top of the slide seat 2. The other end of the spring 2 is fixedly connected to the splint, and several ball bearings are rotatably connected to the bottom of the splint.

[0017] According to the above technical solution, the fixed end includes a rotating part and a clamping component 2, the rotating part includes a support plate fixedly connected to the protective box and a driving part 5 arranged on the upper part of the support plate near the protective box, the support plate is connected to a screw rod bearing, the driving part 5 is configured in a large and small gear meshing transmission mode, the large and small gears of the driving part 5 are connected to the support plate bearing, the large gear of the driving part 5 is fixedly connected to a connecting seat through a rod, the side of the connecting seat is fixedly connected to the clamping component 2, and the clamping component 2 is provided with a limiting column fixedly connected to one side of the connecting seat, an arc-shaped limiting groove for limiting the rotation position of the rod and a circular limiting groove for limiting the rotation position of the limiting column are provided on the support plate, the fixed end can clamp and drive the carbon fiber plate to rotate, and obtain the prestressed stress detection result after twisting the carbon fiber plate;

[0018] The second clamping component has the same structure as the first clamping component.

[0019] According to the above technical solution, a support portion is slidably connected to the guide column, and the support portion is used to assist in clamping the carbon fiber plate on the one hand, and to photograph the bottom of the carbon fiber plate on the other hand to obtain an image of the bottom of the carbon fiber plate;

[0020] The support portion includes a support seat, the support seat is fixedly connected to a handle on one side facing the outside, a through slot 2 is provided on the top of the support seat, a slide is slidably connected to the top of the support seat, a block is fixedly connected to the top left of the slide, the slide is slidably connected to a pull rod on one side perpendicular to the length direction of the screw rod, a limiting hole is provided on the top of the support seat near the handle, the limiting hole is consistent in height with the pull rod, the diameter of the limiting hole is matched with the diameter of the pull rod, a camera is fixedly connected to the inside of the support seat, the camera is electrically connected to an identification module, the identification module is used to identify and obtain the center line of the carbon fiber plate and the bottom defects in the bottom picture of the carbon fiber plate, and then judge the parallel relationship between the center line of the carbon fiber plate and the screw rod one.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a clamping mechanism and a support part, can simplify the clamping process during the prestress detection of the carbon fiber plate, improve the clamping stability of the carbon fiber plate, and at the same time, can twist the carbon fiber plate on the basis of normal prestress detection to obtain the detection result of the prestress of the carbon fiber plate in the torsion state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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:

[0023] Figure 1 It is a partial structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the clamping mechanism and the supporting part of the present invention;

[0026] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0027] Figure 5 It is a schematic cross-sectional view of the overall structure of the mobile terminal of the present invention;

[0028] Figure 6 The present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0029] Figure 7 It is a schematic side cross-sectional view of the structure of the mobile terminal portion of the present invention;

[0030] Figure 8 It is a schematic diagram of a front cross-sectional view of the structure of the mobile terminal portion of the present invention;

[0031] Figure 9 It is a schematic cross-sectional view of the overall structure of the fixed end of the present invention;

[0032] Figure 10 This is an exploded schematic diagram of the fixed end structure of the present invention;

[0033] Figure 11 The present invention Figure 1 Schematic diagram of the enlarged structure of the middle C area;

[0034] Figure 12 This is a schematic diagram of the present invention showing a situation in which a carbon fiber plate is clamped and position adjusted;

[0035] Figure 13 This is a schematic diagram of a situation where the number of through slots 1 corresponding to the clamping range and the optimal clamping area of the present invention is inconsistent;

[0036] In the figure: 1, test bench; 11, support; 12, protective box; 13, box cover;

[0037] 2. Driving mechanism; 21. Driving unit 1; 22. Screw rod 1; 23. Guide column;

[0038] 3. Clamping mechanism; 31. Clamping assembly 1; 32. Clamping assembly 2; 33. Transmission plate; 34. Rotating part; 35. Tension and compression sensor; 36. Connector;

[0039] 3101, back plate; 3102, bottom plate; 3103, top plate; 3104, clamping plate; 3105, second drive unit; 3106, second screw rod; 3107, first anti-slip strip; 3108, first slide; 3109, first spring; 3110, pressure sensor; 3111, third drive unit; 3112, first roller; 3113, fourth drive unit; 3114, second roller; 3115, second slide; 3116, second spring; 3117, ball bearing; 3118, second anti-slip strip.

[0040] 341. Support plate; 342. Driving unit 5; 343. Connecting seat; 344. Limiting column;

[0041] 4. Support part; 41. Support base; 42. Handle; 43. Slide plate; 44. Pull rod; 45. Camera;

[0042] 5. Optimal clamping area. DETAILED DESCRIPTION

[0043] 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.

[0044] See also Figure 1-13 The present invention provides a technical solution: a carbon fiber plate prestress detection device, comprising a detection platform 1, a driving mechanism 2 arranged on the left side of the detection platform 1, and a clamping mechanism 3 arranged inside the detection platform 1. The driving mechanism 2 is used to drive the carbon fiber plate on the tension and compression clamping mechanism 3 to perform prestress detection. The clamping mechanism 3 is used to clamp the carbon fiber plate and adjust the clamping position of the carbon fiber plate. The detection platform 1 is used to provide carbon fiber prestress detection conditions and prevent fragments generated by breakage from causing harm to workers.

[0045] Further, refer to Figure 2 The testing platform 1 includes a support 11 and a protective box 12 fixed on the top of the support 11. A box cover 13 is hinged on the top of the protective box 12. The protective box 12 and the box cover 13 are used to prevent the fragments generated by the tensile fracture of the carbon fiber plate from causing harm to the staff when the carbon fiber plate is subjected to prestressed testing. At the same time, on the basis of normal prestressed testing, prestressed testing under different environments can be carried out inside the protective box 12, thereby further expanding the scope of application of the testing device.

[0046] See also Figure 1The driving mechanism 2 includes a driving part 21 and a screw rod 22. The driving part 21 is fixed to the bottom surface of one side of the detection platform 1. The driving part 21 preferably adopts a motor-driven pulley transmission method. The output end of the driving part 21 is connected to the screw rod 22. The two ends of the screw rod 22 pass through and are connected to the inner wall of the protective box 12 with bearings. Guide columns 23 are also fixedly connected on both sides of the protective box 12 below the screw rod 22.

[0047] See also Figure 2-8 The clamping mechanism 3 includes a movable end connected to the driving mechanism 2 and a fixed end fixed inside the protective box 12. The movable end and the fixed end are used to clamp the carbon fiber plate and are driven by the driving mechanism 2 to perform prestress detection of the carbon fiber plate.

[0048] Further, see Figure 1 The mobile end includes a clamping component 31 and a tension and compression sensor 35. The screw rod 22 is threadedly connected to a transmission plate 33. The transmission plate 33 penetrates and is slidably connected to the guide column 23. The surface of the transmission plate 33 is slidably connected to a connecting member 36 through a rod. The connecting member 36 is located on the side surface of the transmission plate 33 away from the clamping component 31. One end of the rod close to the clamping component 31 is fixedly connected to the clamping component 31. The tension and compression sensor 35 is fixed between the clamping component 31 and the transmission plate 33.

[0049] In actual operation, the driving mechanism 2 drives the screw rod 22 to rotate, driving the transmission plate 33 and the clamping assembly 31 to move left and right, stretching or compressing the carbon fiber plate, so that the tension and compression sensor 35 fixedly connected between the clamping assembly 31 and the transmission plate 33 can directly measure the tensile or compression properties of the carbon fiber, thereby obtaining the prestress detection result of the carbon fiber plate.

[0050] See also Figure 4 The clamping assembly 31 includes a back plate 3101, a bottom plate 3102 and a top plate 3103 fixedly connected to the back plate 3101, and a splint 3104 slidably connected to the back plate 3101. A driving part 2 3105 is fixedly connected to the top plate 3103. Two sets of screw rods 2 3106 are connected with bearings between the bottom plate 3102 and the top plate 3103. The screw rods 2 3106 are threadedly connected to the splint 3104. The driving part 2 3105 is connected to the top of the two sets of screw rods 2 3106 through a pulley transmission. The driving part 2 3105 is used to drive the screw rods 2 3106 to rotate synchronously, thereby driving the splint 3104 to move closer to or away from the bottom plate 3102, thereby clamping the carbon fiber plate between the bottom plate 3102 and the splint 3104.

[0051] See also Figure 4-Figure 8, a plurality of anti-slip strips 3107 are fixedly connected to the top of the bottom plate 3102, a groove 1 is opened on the bottom plate 3102, a slide 3108 is set in the groove 1, the slide 3108 is slidably connected to the bottom plate 3102, a plurality of springs 3109 are fixedly connected to the bottom of the slide 3108, the other end of the spring 3109 is fixedly connected to the bottom plate 3102, a pressure sensor 3110 is fixedly connected in the groove 1 of the bottom plate 3102, and a plurality of through slots 1 are opened on the slide 3108;

[0052] See also Figure 6-Figure 8 , the side of the slide 1 3108 is fixedly connected with a driving part 3111 and a driving part 4 3113, a long rotating shaft and a plurality of short rotating shafts are arranged at intervals in the through slot 1, and only a long rotating shaft or a short rotating shaft is arranged in the same through slot 1, the long rotating shaft and the short rotating shaft are both connected to the bearing of the slide 1 3108, and a plurality of rollers 3112 are fixedly connected to the long rotating shaft, and the driving part 3111 is connected to the long rotating shaft by a worm gear transmission method, and the driving part 3111 is used to drive the roller 1 3112 to rotate, so as to move the clamped carbon fiber plate along the direction of the screw 1 22, and a roller 2 3114 is fixedly connected to the short rotating shaft, and the driving part 4 3113 is connected to the short rotating shaft by a pulley transmission method, and the driving part 4 3113 is used to drive the roller 2 3114 to rotate, so as to move the clamped carbon fiber plate in a direction perpendicular to the screw 1 22;

[0053] The surfaces of roller 1 3112 and roller 2 3114 are both provided with an elastic anti-slip layer of a certain thickness;

[0054] The pressure sensor 3110 corresponds to the position of the through slot 1. The pressure sensor 3110 is preferably a dot matrix pressure sensor. The pressure sensor 3110 is used to detect the force conditions of roller 1 3112 and roller 2 3114 when clamping the carbon fiber plate. The pressure sensor 3110 is electrically connected to a pressure module. The pressure module is used to obtain the pressure data detected by the pressure sensor 3110, determine the clamping position of the carbon fiber plate, and control and adjust the clamping position of the carbon fiber plate.

[0055] See also Figure 7 and Figure 8 , a number of anti-slip strips 3118 are fixedly connected to the splint 3104, and the positions of the anti-slip strips 3118 and the anti-slip strips 3107 correspond to each other. A groove 2 is provided at the bottom of the splint 3104, and a slide 2 3115 is provided in the groove 2. The slide 2 3115 is slidably connected to the splint 3104, and a number of springs 3116 are fixedly connected to the top of the slide 2 3115. The other end of the spring 2 3116 is fixedly connected to the splint 3104, and a number of balls 3117 are rotatably connected to the bottom of the splint 3104.

[0056] In actual operation, the staff places the carbon fiber plate on the base plate 3102, and the driving part 2 3105 starts to drive the clamping plate 3104 to move closer to the base plate 3102, and fixes the carbon fiber plate between the base plate 3102 and the clamping plate 3104, thereby ensuring that the clamping component 1 31 can normally and tightly clamp the carbon fiber plate; during the clamping process, the spring 1 3109 and the spring 2 3116 are compressed, and the clamping of the roller 1 3112, the roller 2 3114 and the ball 3117 is changed to being clamped together with the anti-slip strip 1 3107 and the anti-slip strip 2 3118; because the carbon fiber plate has a certain thickness and the surfaces of the roller 1 3112 and the roller 2 3114 are provided with anti-slip pads, the roller 1 3112 and the roller 2 3114 with the carbon fiber plate above are There is a large deformation of the anti-slip pads on the surface of wheel one 3112 and roller two 3114. The force is mutual, and the pressure data detected by the pressure sensor 3110 will be greater than the pressure data corresponding to the absence of a carbon fiber plate above roller one 3112 and roller two 3114; then the driving unit two 3105 drives the clamping plate 3104 to move in the opposite direction of the bottom plate 3102, releasing the tight clamping of the carbon fiber plate, and controlling the driving unit three 3111 and the driving unit four 3113 to start, so as to adjust the position of the end of the carbon fiber plate on the bottom plate 3102, ensuring that the carbon fiber plate undergoing prestressed testing can maintain the best clamping state, and avoiding the accuracy of the prestressed testing results due to clamping offset.

[0057] See also Figure 1 、 Figure 9-10 The fixed end includes a rotating part 34 and a clamping component 2 32. The rotating part 34 includes a support plate 341 fixedly connected to the protective box 12 and a driving part 5 342 arranged on the upper part of the support plate 341 near the protective box 12. The support plate 341 is connected to the screw rod 1 22 bearing, and the driving part 5 342 is configured in a large and small gear meshing transmission mode. The large and small gears of the driving part 5 342 are connected to the support plate 341 bearing. The large gear of the driving part 5 342 is fixedly connected with a connecting seat 343 through a rod. The side of the connecting seat 343 is fixedly connected to the clamping component 2 32. The clamping component 2 32 is provided with a limiting column 344 fixedly connected to one side of the connecting seat 343. The support plate 341 is provided with an arc-shaped limiting groove for limiting the rotation position of the rod and a circular limiting groove for limiting the rotation position of the limiting column 344.

[0058] The second clamping assembly 32 has the same structure as the first clamping assembly 31 .

[0059] In actual operation, before or during the prestressed load test, the control driving unit 5 342 is started, and the driving unit 5 342 is adjusted to drive the connecting seat 343 to rotate, thereby driving the clamping assembly 2 32 to rotate, thereby achieving conventional prestressed load test and obtaining the prestressed load test result after twisting the carbon fiber plate.

[0060] See also Figure 1 and Figure 11 The guide column 23 is slidably connected to a support portion 4, which is used to assist in clamping the carbon fiber plate. On the other hand, it is used to photograph the bottom of the carbon fiber plate. The bottom image of the obtained carbon fiber plate includes at least the shape and defects of the carbon fiber plate, so as to facilitate the subsequent identification of the center line of the carbon fiber plate.

[0061] The support portion 4 includes a support seat 41, which is fixedly connected to a handle 42 on the outside side of the support seat 41, and a through groove 2 is provided on the top of the support seat 41. A slide plate 43 is slidably connected to the top of the support seat 41, and a block is fixedly connected to the top left side of the slide plate 43. The slide plate 43 is slidably connected to a pull rod 44 on one side perpendicular to the length direction of the screw rod 22. A limiting hole is provided on the top of the support seat 41 near the handle 42. The limiting hole is consistent in height with the pull rod 44, and the diameter of the limiting hole matches the diameter of the pull rod 44. A camera 45 is fixedly connected to the inside of the support seat 41, and the slide plate 43 is used to protect the camera 45. The camera 45 is electrically connected to an identification module, which is used to identify and obtain the center line of the carbon fiber plate and the bottom defects in the bottom image of the carbon fiber plate, and then judge the parallel relationship between the center line of the carbon fiber plate and the screw rod 22.

[0062] In actual operation, the staff first pulls the pull rod 44 along the length direction of the vertical screw rod 22, pulls the pull rod 44 out of the limit hole, releases the position limit of the slide plate 43 and the support seat 41, and then pulls the pull rod 44 along the length direction of the screw rod 22 to pull the slide plate 43 out from the top of the support seat 41, so that there is no obstruction above the camera 45; then the staff places the carbon fiber plate on the top of the support seat 41, pulls the handle 42 to drive the carbon fiber plate to move along the length direction of the screw rod 22, and preliminarily clamps the carbon fiber plate on the clamping component 1 31 and the clamping component 2 32. After completing the preliminary clamping, the staff pulls the handle 42 to drive the support seat 41 to move from one end of the carbon fiber plate to the other end, so that the camera 45 can shoot the bottom of the carbon fiber plate.

[0063] Detection method of carbon fiber plate prestressed testing device:

[0064] Step 1: Clamping the carbon fiber plate, pre-clamping the carbon fiber plate to the pressure module to obtain pressure data with pressure difference, and obtain the actual clamping range of the carbon fiber plate end. The recognition module identifies the bottom image of the carbon fiber plate, obtains the parallel relationship between the carbon fiber plate and the screw rod 22 and the bottom defect, and the clamping mechanism 3 adjusts the clamping position of the carbon fiber plate based on the data obtained by the pressure module and the recognition module;

[0065] S1: Pre-clamping, determining the parallel relationship between the carbon fiber plate and the screw rod 22 and the actual clamping position of the end of the carbon fiber plate: the staff uses the support part 4 to assist in clamping the carbon fiber plate, and controls the drive part 2 3105 to start driving the clamping plate 3104 to approach the base plate 3102, clamping the carbon fiber plate until the pressure data obtained by the pressure module is within the set range. The pressure module obtains the actual clamping range of the end of the carbon fiber plate according to the position where there is a significant pressure difference. The staff then pulls the support part 4 to drive the camera 45 to shoot the bottom of the carbon fiber plate. The recognition module identifies and obtains the parallel relationship between the carbon fiber plate and the screw rod 22 and the bottom defects in the bottom image.

[0066] The pressure module is set with the pressure range set during pre-clamping, the optimal clamping area 5 of the carbon fiber plate, and the pressure difference that determines the actual clamping range of the carbon fiber plate end. The pressure range is (F1, F2), and the pressure difference is recorded as The optimal clamping area 5 corresponds to the number and width of the through slots 1 on the slide 3108. The optimal clamping area 5 is the optimal clamping position that can maintain stable clamping of the carbon fiber plate and accurate test results during the prestress test of the carbon fiber plate;

[0067] The pressure module obtains multiple sets of pressure data corresponding to roller one 3112 and roller two 3114 and determines the actual clamping range of the end of the carbon fiber plate. The pressure data corresponding to roller one 3112 is recorded as f in The pressure data corresponding to roller 2 is recorded as f im , i is the number sequence number from the through slot one, n is the number corresponding to roller one 3112, m is the number corresponding to roller two 3114, i∈[1,I], I is the total number sequence number of the through slot one, the sequence numbers of the through slot one are arranged from away from the back plate 3101 to close to the back plate 3101, since a long rotating shaft and several short rotating shafts are arranged at intervals in the through slot one, only a long rotating shaft or a short rotating shaft is arranged in the same through slot one, so when i is an odd number, a long rotating shaft is arranged in the through slot one, and when i is an even number, a short rotating shaft is arranged in the through slot one, n∈[1,N], N is the total number sequence number of roller one 3112 in a single through slot one, m∈[1,M], M is the total number sequence number of roller two 3114 in a single through slot one, the numbers N and M may be the same or different.

[0068] In the pressure data f in 、f im ∈(F1,F2),i∈[1,I],n∈[1,N],m∈[1,M] is pre-clamping completed; if any set of pressure data f in 、f im ∉(F1,F2),i∈[1,I],n∈[1,N],m∈[1,M],the pressure module will give an alarm prompt to avoid abnormal clamping of carbon fiber plate or abnormal clamping assembly leading to abnormal clamping of carbon fiber plate and affecting the prestress test result of carbon fiber plate;

[0069] Specifically, the actual clamping range of the end of the carbon fiber plate is determined as follows: the pressure module obtains multiple sets of pressure data and compares adjacent pressure data. The adjacent pressure data are the pressure values of the rollers 1 3112 and 2 3114 that are directly adjacent to each other in front of, behind, to the left of, or to the right of the roller 1 3112 and the roller 2 3114, as well as the cross-adjacent pressure values. When the difference between the adjacent actual pressure values is greater than ∆f, the position with the larger pressure value corresponds to the contour of the clamping range of the carbon fiber plate, and the difference between any adjacent actual pressure values on both sides of the contour is less than 0.5. When , the side with a larger actual pressure value of the contour is the range where the carbon fiber plate is actually clamped.

[0070] S2: Adjust the clamping position:

[0071] Specifically, the staff pulls the support part 4, driving the camera 45 to capture the bottom of the carbon fiber plate and feeds the information back to the recognition module. When the recognition module recognizes that the carbon fiber plate has defects, it issues an alarm and the staff stops starting the driving mechanism 2 to drive the carbon fiber plate on the tensile clamping mechanism 3 to perform a prestress test. That is, the driving mechanism 2 stops driving the transmission plate 33 to drive the clamping component 1 31 to move away from the clamping component 2 32. The defects include but are not limited to cracks, impurities, convex deformations, etc.

[0072] For a defect-free carbon fiber plate, the recognition module further identifies and obtains the center line of the carbon fiber plate, and determines the parallel relationship between the center line and the screw rod 22.

[0073] When the center line of the carbon fiber plate coincides with the center line of the screw rod 22, the clamping ranges at both ends of the carbon fiber plate are within the optimal clamping area 5, and the number of through slots 1 corresponding to the clamping range and the optimal clamping area 5 is consistent, the carbon fiber plate clamping position is the optimal clamping position, and normal carbon fiber plate prestressing detection can be carried out. In all other cases, position adjustment is required.

[0074] It should be noted that the actual clamping range is within the optimal clamping area 5, and the number of complete through-slots in the width direction of the carbon fiber plate corresponding to the actual clamping range is consistent with the number of through-slots in the optimal clamping area 5; if the corresponding partial through-slot in the width direction is consistent, it does not belong to the actual clamping range and the number of through-slots in the optimal clamping area 5 is consistent. For example, Figure 13 As shown, the number of through slots 1 corresponding to the optimal clamping area 5 is four, and the fourth through slot 1 from the left to the right corresponding to the actual clamping range is incomplete in the width direction of the carbon fiber plate, that is, the actual clamping range of the carbon fiber plate end is inconsistent with the number of through slots 1 corresponding to the optimal clamping area 5.

[0075] When the center line of the carbon fiber plate does not coincide with the center line of the screw rod 22 in the length direction, that is, when there is a deflection angle, the deflection angle is an acute angle. Figure 12 , the clamped carbon fiber plate is in a skewed state, and the clamping assembly 1 31 at the mobile end and the clamping assembly 2 32 at the fixed end are both changed to a non-clamping state, that is, the driving unit 2 3105 drives the clamping plate 3104 away from the bottom plate 3102, so that the ball 3117 does not contact the carbon fiber plate. Then the driving unit 4 3113 on the clamping assembly 1 31 at the mobile end and the clamping assembly 2 32 at the fixed end is started, driving the roller 2 3114 to rotate in the opposite direction of the tilt direction, and moving the carbon fiber plate in a direction perpendicular to the screw rod 1 22. The moving distance is set according to the actual angle and the length of the carbon fiber plate to be tested; if the center line of the carbon fiber plate is parallel to the center line of the screw rod 22 but does not coincide with it, the driving part 4 3113 on the mobile end clamping component 1 31 and the clamping component 2 32 is started at the same time, driving the roller 2 3114 to rotate toward the side of the screw rod 1 22, and moving the carbon fiber plate in a direction perpendicular to the screw rod 1 22. The moving distance is the difference between the center line and the center line of the screw rod 1 22. After the movement is completed, this step can be repeated only twice.

[0076] When the clamping range at both ends of the carbon fiber plate is within the optimal clamping area 5, but the clamping range is inconsistent with the number of through slots 1 corresponding to the optimal clamping area 5, the clamping assembly 1 31 at the movable end and the clamping assembly 2 32 at the fixed end are both changed to a non-clamping state. First, the driving part 3111 on the clamping assembly 1 31 at the movable end is started to drive the roller 1 3112 to rotate, and the carbon fiber plate is moved in a direction parallel to the screw rod 1 22. Then, the clamping assembly 1 31 at the movable end is changed to a light clamping state, that is, the driving part 2 3105 drives the clamping plate 3104 close to the bottom plate 3102, so that the ball 3117 contacts the carbon fiber plate, and then the driving mechanism 2 drives the movable end to move, driving the carbon fiber plate to adjust the moving distance on the clamping assembly 2 32. The moving distance is adjusted according to the actual difference in the number of corresponding through slots 1 and the corresponding width of the through slot 1. After the movement is completed, this step can be repeated only twice.

[0077] Even after adjustment and retesting in the above manner, if the end of the carbon fiber plate still cannot meet the clamping conditions for normal carbon fiber plate prestressing testing, the pressure module will issue an alarm and the staff will recheck whether the shape of the sample meets the standards.

[0078] Step 2: Stretch and torsion the carbon fiber plate, and select and determine the prestress test method;

[0079] Method 1: The driving mechanism 2 drives the movable end to move the carbon fiber plate away from the fixed end to perform a prestress test. The tension and compression sensors 35 detect the tensile and compression properties, thereby obtaining the prestress test results of the carbon fiber.

[0080] Method 2: After the rotating part 34 of the fixed end drives the second clamping assembly 32 to rotate a certain angle, the driving mechanism 2 drives the movable end to clamp the carbon fiber plate and move away from the fixed end to perform the prestress test after the carbon fiber is twisted;

[0081] Method 3: ① The rotating part 34 of the fixed end drives the second clamping assembly 32 to rotate a certain angle and rotate back and forth; ② The driving mechanism 2 drives the movable end to clamp the carbon fiber plate and move it away from the fixed end. By performing these two operations simultaneously or successively, the prestressing test results of the carbon fiber plate torsion can be obtained;

[0082] After the test, the deformation of the carbon fiber plate after the prestress test can be obtained by moving the support part 4, shooting with the camera 45 and recognizing the image of the recognition module, thereby obtaining the deformation resistance of the carbon fiber plate.

[0083] It should be noted that, in actual use, the support portion 4 can be changed to move along the direction of the screw rod 22 in a non-human driven manner, which can be a linear motor driven manner.

[0084] Through the above method, the clamping steps for workers to detect the prestress of carbon fiber plates are simplified. Through the self-adjustment of the device, it can be ensured that the clamped carbon fiber plates are in the optimal clamping state. It can also increase the torque on the basis of normal prestress detection to obtain the prestress detection results after twisting the carbon fiber plates.

[0085] 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.

[0086] 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 carbon fiber plate prestress detection device, comprising a detection platform (1), a driving mechanism (2) arranged on the left side of the detection platform (1), and a clamping mechanism (3) arranged inside the detection platform (1), characterized in that: The driving mechanism (2) is used to drive the carbon fiber plate on the tension and compression clamping mechanism (3) to perform prestress testing, and the clamping mechanism (3) is used to clamp the carbon fiber plate and adjust the clamping position of the carbon fiber plate; The clamping mechanism (3) includes a movable end and a fixed end, the movable end includes a clamping component (31) and a tension and compression sensor (35), the clamping component (31) includes a back plate (3101), a bottom plate (3102) and a top plate (3103) fixedly connected to the back plate (3101), and a clamping plate (3104) slidably connected to the back plate (3101); A groove 1 is provided on the bottom plate (3102), a slide seat 1 (3108) is provided in the groove 1, the slide seat 1 (3108) is slidably connected to the bottom plate (3102), a pressure sensor (3110) is fixedly connected in the groove 1 of the bottom plate (3102), and a plurality of through grooves 1 are provided on the slide seat 1 (3108); The side of the slide seat 1 (3108) is fixedly connected to the driving part 3 (3111) and the driving part 4 (3113), a long rotating shaft and a plurality of short rotating shafts are arranged at intervals in the through slot 1, and only a long rotating shaft or a short rotating shaft is arranged in the same through slot 1, and the long rotating shaft and the short rotating shaft are both connected to the bearing of the slide seat 1 (3108), a plurality of rollers 1 (3112) are fixedly connected to the long rotating shaft, and a roller 2 (3114) is fixedly connected to the short rotating shaft; The pressure sensor (3110) corresponds to a position of the through slot, and the pressure sensor (3110) is electrically connected to a pressure module, and the pressure module is used to obtain pressure data detected by the pressure sensor (3110) and determine the clamping position of the carbon fiber plate; The top of the bottom plate (3102) is fixedly connected to a plurality of anti-slip strips (3107), the bottom of the slide seat (3108) is fixedly connected to a plurality of springs (3109), and the other end of the spring (3109) is fixedly connected to the bottom plate (3102); The splint (3104) is fixedly connected with a plurality of anti-slip strips (3118), and the positions of the anti-slip strips (3118) and the anti-slip strips (3107) correspond to each other. A groove (2) is provided at the bottom of the splint (3104), and a slide seat (3115) is provided in the groove (2). The slide seat (3115) is slidably connected to the splint (3104). The top of the slide seat (3115) is fixedly connected with a plurality of springs (3116), and the other end of the springs (3116) is fixedly connected to the splint (3104). The bottom of the splint (3104) is rotatably connected with a plurality of balls (3117).

2. A carbon fiber plate prestress detection device according to claim 1, characterized in that: The testing platform (1) comprises a support (11) and a protection box (12) fixed to the top of the support (11), and a box cover (13) is hinged on the top of the protection box (12).

3. A carbon fiber plate prestress detection device according to claim 2, characterized in that: The driving mechanism (2) includes a driving part (21) and a screw rod (22), wherein the driving part (21) is fixed to the bottom surface of one side of the detection platform (1), and the output end of the driving part (21) is connected to the screw rod (22), and both ends of the screw rod (22) pass through and are connected to the inner wall of the protective box (12) through bearings, and the two sides of the protective box (12) below the screw rod (22) are fixedly connected with guide pillars (23).

4. A carbon fiber plate prestress detection device according to claim 3, characterized in that: The screw rod 1 (22) is threadedly connected to a transmission plate (33), and the transmission plate (33) and the guide column (23) are penetrated and slidably connected. The surface of the transmission plate (33) is slidably connected to a connecting member (36) through a rod. The connecting member (36) is located on a side surface of the transmission plate (33) away from the clamping component 1 (31). One end of the rod close to the clamping component 1 (31) is fixedly connected to the clamping component 1 (31). The tension and compression sensor (35) is fixed between the clamping component 1 (31) and the transmission plate (33).

5. The carbon fiber plate prestress detection device according to claim 4, characterized in that: A second driving part (3105) is fixedly connected to the top plate (3103), two sets of second screw rods (3106) are connected by bearings between the bottom plate (3102) and the top plate (3103), and the second screw rods (3106) are threadedly connected to the clamping plate (3104); The surfaces of the roller 1 (3112) and the roller 2 (3114) are both provided with an anti-slip layer of a certain thickness and elasticity.

6. The carbon fiber plate prestress detection device according to claim 5, characterized in that: The fixed end includes a rotating part (34) and a clamping component 2 (32), the rotating part (34) includes a support plate (341) fixedly connected to the protective box (12) and a driving part 5 (342) arranged on the upper part of the support plate (341) close to the protective box (12), the support plate (341) is connected to the screw rod 1 (22) bearing, the driving part 5 (342) is arranged in a large and small gear meshing transmission mode, the large and small gears of the driving part 5 (342) are connected to the support plate (341) bearing, the large gear of the driving part 5 (342) is fixedly connected to a connecting seat (343) through a rod, the side of the connecting seat (343) is fixedly connected to the clamping component 2 (32), the clamping component 2 (32) is provided with a limiting column (344) fixedly connected to one side of the connecting seat (343), and the support plate (341) is provided with an arc-shaped limiting groove for limiting the rotation position of the rod and a circular limiting groove for limiting the rotation position of the limiting column (344); The structure of the clamping assembly 2 (32) is the same as that of the clamping assembly 1 (31).

7. The carbon fiber plate prestress detection device according to claim 6, characterized in that: A support portion (4) is slidably connected to the guide column (23), and the support portion (4) is used for assisting in clamping the carbon fiber plate on one hand, and for photographing the bottom of the carbon fiber plate on the other hand, to obtain an image of the bottom of the carbon fiber plate; The support portion (4) includes a support seat (41), the support seat (41) is fixedly connected to a handle (42) on one side facing outward, a through slot 2 is provided on the top of the support seat (41), a slide plate (43) is slidably connected to the top of the support seat (41), a stop block is fixedly connected to the top left of the slide plate (43), and a pull rod (44) is slidably connected to the slide plate (43) on one side perpendicular to the length direction of the screw rod (22), a limiting hole is provided on the top of the support seat (41) near the handle (42), the limiting hole is consistent in height with the pull rod (44), and the diameter of the limiting hole matches the diameter of the pull rod (44), a camera (45) is fixedly connected inside the support seat (41), and the camera (45) is electrically connected to an identification module, and the identification module is used to identify and obtain the center line of the carbon fiber plate and the bottom defect in the bottom image of the carbon fiber plate, and then judge the parallel relationship between the center line of the carbon fiber plate and the screw rod (22).

8. A method for detecting prestress of a carbon fiber plate, implemented based on the device for detecting prestress of a carbon fiber plate according to claim 7, characterized in that: Here’s how: Step 1: Clamp the carbon fiber plate, pre-clamp the carbon fiber plate to the pressure module to obtain pressure data with pressure difference, obtain the actual clamping range of the carbon fiber plate end, identify the bottom image of the carbon fiber plate by the recognition module, obtain the parallel relationship between the carbon fiber plate and the screw rod 1 (22) and the bottom defect, and the clamping mechanism (3) adjusts the clamping position of the carbon fiber plate in combination with the data obtained by the pressure module and the recognition module; Step 2: Stretch and torsion the carbon fiber plate, and select and determine the prestress test method.

9. The detection method of a carbon fiber plate prestress detection device according to claim 8, characterized in that: The pressure module is provided with a pressure interval set during pre-clamping, an optimal clamping area (5) of the carbon fiber plate, and a pressure difference for determining the actual clamping range of the carbon fiber plate end. The pressure interval is (F1, F2), and the pressure difference is recorded as ; The actual clamping range of the carbon fiber plate end is determined as follows: the pressure module obtains multiple sets of pressure data and compares the adjacent pressure data. The adjacent pressure data are the pressure values of the roller one (3112) and roller two (3114) that are directly adjacent to the front, rear, left, and right of the corresponding roller one (3112) and roller two (3114) and the cross-adjacent roller one (3112) and roller two (3114). When the difference between the adjacent actual pressure values is greater than When the pressure value is large, the position corresponding to the contour of the carbon fiber plate is clamped, and the difference between any adjacent actual pressure values on both sides of the contour is less than 0.5 When , the side with a larger actual pressure value of the contour is the range in which the carbon fiber plate is actually clamped.

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