A torsional deformation test device and method for carbon fiber unidirectional resin composite panels

Abstract

The present invention discloses a torsional tensile deformation test device and method for a carbon fiber unidirectional resin composite plate, comprising a test base, a spacing adjustment component provided on the top of the test base, and a set of clamping components provided at the two output ends of the spacing adjustment component, respectively. The two sets of clamping components are used in conjunction with each other. The present invention relates to the technical field of plate performance testing. The carbon fiber unidirectional resin composite plate torsional tensile deformation test device and method, by using the spacing adjustment component to adjust the spacing of the two sets of clamping components, facilitates clamping of carbon fiber composite plates of different lengths while also applying the same tensile force to both sides of the clamped carbon fiber composite plate. By cooperating with a first rotating member, a second rotating member, and a driving member, torsional forces in opposite directions are applied to both sides of the clamped carbon fiber composite plate to perform a torsional tensile deformation test on the carbon fiber composite plate. The operation is simple and the use is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of plate performance testing, in particular to a torsional tensile deformation testing device and method for a carbon fiber unidirectional resin composite plate. Background Art

[0002] Carbon fiber composites refer to structural or functional materials made by combining materials such as resin, metal, ceramic, and rubber as a matrix with carbon fiber as a reinforcement. Depending on the matrix material, carbon fiber composites can be divided into resin-based composites, metal-based composites, ceramic-based composites, and rubber-based composites. Resin-based composites are composites made with resin as a matrix and carbon fiber as a reinforcement.

[0003] For carbon fiber unidirectional resin composite panels, complex load tests are required before they are put into practical application. Conventional tests include but are not limited to bending fatigue tests and impact load tests. These tests are relatively conventional and cannot meet the high standards required in harsh environments. For this reason, a torsional tensile deformation test device and method for carbon fiber unidirectional resin composite panels are proposed, which can realize torsional tensile load tests on carbon fiber unidirectional resin composite panels, and provide reliable data support for the normal use of carbon fiber unidirectional resin composite panels in harsh environments. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a device and method for testing torsional and tensile deformation of carbon fiber unidirectional resin composite plates, which solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a carbon fiber unidirectional resin composite plate torsional tensile deformation test device, including a test base, a spacing adjustment component is provided on the top of the test base, and a group of clamping components are respectively provided at the two output ends of the spacing adjustment component. The two groups of clamping components are used in combination to clamp and position the carbon fiber composite plate. A first rotating member and a second rotating member are also provided on the opposite sides of the two groups of clamping components. The top of the test base is fixedly connected to a driving member used in combination with the first rotating member and the second rotating member. The driving member is used to drive the first rotating member and the second rotating member to rotate, so that the two groups of clamping components rotate in opposite directions.

[0006] The present invention is further configured as follows: the spacing adjustment assembly includes a hydraulic telescopic rod and two movable seats, two first tooth plates and two second tooth plates are fixedly connected to opposite sides of the two movable seats, the two first tooth plates are arranged between the two second tooth plates, and a push plate is fixedly connected between opposite sides of the two first tooth plates, and the telescopic end of the hydraulic telescopic rod is fixedly connected to one side of the push plate;

[0007] The two movable seats are both slidably mounted on the top of the test base, and two first gears are rotatably mounted on the top of the test base. The first gears are arranged between the first tooth plate and the second tooth plate, and the first gears are meshed with the first tooth plate and the second tooth plate.

[0008] The present invention is further configured as follows: the two groups of clamping assemblies each include a vertical rod, a clamping frame is rotatably mounted on one side of the vertical rod via a rotating shaft, extrusion plates are slidably mounted on the front and rear sides of the inner cavity of the clamping frame, and adjustment screws are rotatably mounted on the opposite sides of the two extrusion plates via bearings, one end of the adjustment screw passes through the clamping frame and is fixedly connected to an adjustment knob, and the adjustment screw is threadedly engaged with the clamping frame;

[0009] The two vertical poles are respectively fixedly connected to the tops of the two moving seats.

[0010] The present invention is further configured as follows: the first rotating member includes a first sprocket and a driving sprocket, the first sprocket and the driving sprocket are connected to each other via a first chain transmission, one end of a clamping frame rotating shaft is fixedly connected to a second gear, one side of the first sprocket is fixedly connected to a third gear, and the second gear is meshed with the third gear;

[0011] The first sprocket is rotatably mounted on a side of one upright pole away from the other upright pole.

[0012] The present invention is further configured as follows: the second rotating member includes a second sprocket and a driven sprocket, and the second sprocket and the driven sprocket are connected via a second chain transmission;

[0013] The second sprocket is fixedly connected to one end of the rotating shaft of the other clamping frame.

[0014] The present invention is further configured as follows: the driving member includes two mounting plates, one side of one mounting plate is fixedly connected to a first servo motor, an output end of the first servo motor passes through the mounting plate and is fixedly connected to a double-ended spline shaft via a coupling, one end of the double-ended spline shaft is rotatably connected to one side of the other mounting plate via a bearing;

[0015] The two mounting plates are respectively fixedly connected to both sides of the top of the test base, the driving sprocket and the driven sprocket are respectively sleeved and slidably mounted on the two ends of the double-headed spline shaft, and the opposite sides of the driving sprocket and the driven sprocket are respectively in contact with the opposite sides of the two moving seats, and the opposite sides of the two vertical poles are fixedly connected with L-shaped limit plates, and the two L-shaped limit plates are respectively used in conjunction with the driving sprocket and the driven sprocket.

[0016] The present invention is further configured as follows: two auxiliary plates are fixedly connected to the opposite side of the two mounting plates, the two movable seats are both sleeved and slidably mounted on the two auxiliary plates, and the bottoms of the two auxiliary plates are respectively in sliding contact with the tops of the two second tooth plates.

[0017] The present invention is further configured as follows: the test base is rotatably mounted on a flip support, a storage box is placed below the flip support, a loading platform is fixed to the top of the flip support, a circular baffle is fixed to the top of the loading platform, an annular loading rack is rotatably mounted on the top of the circular baffle, a loading slot is provided on the annular loading rack, the carbon fiber composite plate is inserted into the loading slot and can fall freely in the loading slot, corresponding unloading openings are provided on the circular baffle and on the loading platform, and a blanking guide is installed at the corresponding position of the bottom end of the loading platform and the unloading opening.

[0018] The present invention is further configured as follows: a fourth gear is fixed on the mounting shaft of the test base, a fifth gear and a sixth gear are rotatably mounted on the flip support, the fifth gear is an incomplete gear, and the fifth gear is located between the fourth gear and the sixth gear, a first bevel gear is fixed on the mounting shaft of the sixth gear, a vertical transmission shaft and a horizontal transmission shaft are rotatably mounted on the loading platform, a gear ring is fixed on the outside of the annular loading rack, a seventh gear and a second bevel gear are fixed at both ends of the horizontal transmission shaft, a third bevel gear and a fourth bevel gear are fixed at both ends of the vertical transmission shaft, the fourth bevel gear is meshed with the first bevel gear, the second bevel gear is meshed with the third bevel gear, and the seventh gear is meshed with the gear ring

[0019] The present invention also discloses a torsional tensile deformation test method for a carbon fiber unidirectional resin composite plate, which specifically comprises the following steps:

[0020] Step 1: Drive the annular loading rack to rotate, drive a carbon fiber composite plate to fall into the two clamping frames, turn the adjustment knob, the adjustment knob drives the adjustment screw to rotate, and the adjustment screw drives the extrusion plate to clamp and position the carbon fiber composite plate;

[0021] Step 2: Control the hydraulic telescopic rod to extend at a set pressure. The hydraulic telescopic rod pushes the push plate to move the two first toothed plates, and the two first toothed plates drive a moving seat to move. During the process, the two first toothed plates respectively drive a first gear to move the second toothed plate, so that the two second toothed plates push another moving seat to move. At this time, the two moving seats move in opposite directions. The moving seat drives the vertical rod to move the clamping frame, and the clamping frame drives the adjusting screw to make the extrusion plate apply tension to both sides of the carbon fiber composite plate.

[0022] Step 3: Start the first servo motor. The first servo motor drives the double-ended spline shaft to rotate. The two ends of the double-ended spline shaft respectively drive the driving sprocket and the driven sprocket to rotate:

[0023] The driving sprocket drives the first sprocket to rotate through the first chain, the first sprocket drives the third gear to rotate, the third gear drives the second gear to rotate synchronously, and the second gear drives a clamping frame to rotate through the rotating shaft, applying a torsional force to one side of the carbon fiber composite plate;

[0024] The driven sprocket drives the second sprocket to rotate through the second chain, and the second sprocket drives another clamping frame to rotate through the rotating shaft, applying a torsional force in the opposite direction to the other side of the carbon fiber composite plate;

[0025] Step 4: After the experiment is completed, turn the adjustment knob in the opposite direction to loosen the carbon fiber composite plate, which will cause the test base to flip 360 degrees. When the clamping frame on the test base faces downward, the carbon fiber composite plate will automatically fall into the storage box.

[0026] The present invention provides a device and method for testing the torsional deformation of carbon fiber unidirectional resin composite panels. The device and method have the following beneficial effects:

[0027] (1) The present invention utilizes a spacing adjustment component to adjust the spacing between the two groups of clamping components, thereby facilitating the clamping of carbon fiber composite plates of different lengths and applying the same tensile force to both sides of the clamped carbon fiber composite plates. Through the cooperation of the first rotating member, the second rotating member and the driving member, torsional forces in opposite directions are applied to both sides of the clamped carbon fiber composite plates to perform a torsional tensile deformation test on the carbon fiber composite plates. The operation is simple and the use is more convenient.

[0028] (2) The present invention ensures that equal pressure is applied to both sides of the carbon fiber composite plate when the two moving seats move, by coordinating the hydraulic telescopic rod, the push plate, the two first tooth plates, the two second tooth plates and the two moving seats, thereby providing reliable protection for the accuracy of the test results.

[0029] (3) The present invention realizes single-power drive of the first rotating member and the second rotating member through the cooperation of the driving motor, the double-headed spline shaft, the driving sprocket and the driven sprocket, ensuring that the torsional forces applied to the carbon fiber composite plate after clamping are equal, providing reliable guarantee for the accuracy of the test results.

[0030] (4) A feeding slot is provided on the annular feeding rack, which can be used to insert multiple carbon fiber composite panels to be tested at one time. By driving the annular feeding rack to rotate relative to the circular baffle, each carbon fiber composite panel can be moved to the feeding opening position in sequence and allowed to fall freely. The setting of the drop guide ensures that the carbon fiber composite panel can accurately fall into the clamping frame on the test base, realizing automatic intermittent feeding, greatly improving feeding efficiency, reducing the time and labor intensity of manual operation, and also improving the accuracy and stability of feeding.

[0031] (5) The test base can be rotatably mounted on the flip support. After the test is completed, the clamping frame can be turned downward by driving the test base to rotate, so that the carbon fiber composite plate after the test is automatically dropped into the storage box for collection, realizing convenient unloading operation. The unique gear transmission system design can drive the annular loading rack to rotate and load materials and drive the test base to flip and unload materials respectively through only one second servo motor. The fifth gear is an incomplete gear with a gear distribution angle of less than 180 degrees. During the rotation process, it alternately meshes with the fourth gear and the sixth gear to achieve different actions. When it meshes with the fourth gear, it drives the test base to flip. When it meshes with the sixth gear, it drives the annular loading rack to rotate through the multi-stage gear transmission. This integrated drive method is not only easy to use and does not require manual intervention, but also improves the operating efficiency and automation level of the entire device, making the torsion and tension deformation test process of the carbon fiber composite plate more consistent and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the external structure of the present invention in Example 1;

[0033] Figure 2 This is a schematic structural diagram of the spacing adjustment assembly of the present invention in Example 1;

[0034] Figure 3 This is a schematic structural diagram of the driving member of the present invention in Example 1;

[0035] Figure 4 This is a schematic structural diagram of the clamping assembly of Example 1 of the present invention;

[0036] Figure 5 This is a schematic diagram of the connection between the first rotating member and a vertical pole structure of the present invention in Example 1;

[0037] Figure 6 This is a schematic diagram of the connection between the second rotating member, the double-ended spline shaft and another vertical rod structure of the present invention in Example 1;

[0038] Figure 7 This is an exploded view of the present invention in Example 2;

[0039] Figure 8 This is a front view of the present invention in Example 2;

[0040] Figure 9 A top view of the invention in Example 2;

[0041] Figure 10 This is a first-perspective stereogram of the invention in Example 2;

[0042] Figure 11 This is a second perspective stereogram of the invention in Example 2;

[0043] Figure 12This is a third-view stereogram of the invention in Example 2;

[0044] In the figure, 1. test base; 2. spacing adjustment assembly; 3. clamping assembly; 4. first rotating member; 5. second rotating member; 6. driving member; 7. hydraulic telescopic rod; 8. moving seat; 9. first tooth plate; 10. second tooth plate; 11. push plate; 12. first gear; 13. vertical rod; 14. clamping frame; 15. extrusion plate; 16. adjusting screw; 17. adjusting knob; 18. first sprocket; 19. driving sprocket; 20. first chain; 21. second gear; 22. third gear; 23. second sprocket; 24. driven sprocket; 25. second chain; 26. mounting plate; 27. First servo motor; 28. Double-ended spline shaft; 29. ​​L-shaped limit plate; 30. Auxiliary plate; 31. Through hole; 32. Flip support; 33. Storage box; 34. Fourth gear; 35. Fifth gear; 36. Second servo motor; 37. Loading platform; 38. Blanking guide; 39. Circular baffle; 40. Annular loading rack; 41. Gear ring; 42. Loading slot; 43. Sixth gear; 44. First bevel gear; 45. Horizontal transmission shaft; 46. Seventh gear; 47. Second bevel gear; 48. Vertical transmission shaft; 49. Third bevel gear; 50. Fourth bevel gear. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Example 1

[0046] See also Figure 1-6 , an embodiment of the present invention provides the following technical solution: a carbon fiber unidirectional resin composite plate torsion and tension deformation test device, including a test base 1, a spacing adjustment component 2, two sets of clamping components 3, a first rotating member 4, a second rotating member 5 and a driving member 6.

[0047] As a preferred solution, in order to achieve effective clamping of carbon fiber composite plates of different thicknesses, the two groups of clamping components 3 both include a vertical rod 13, a clamping frame 14 is rotatably installed on one side of the vertical rod 13 through a rotating shaft, and extrusion plates 15 are slidably installed on the front and rear sides of the inner cavity of the clamping frame 14, and an adjusting screw 16 is rotatably installed on the opposite sides of the two extrusion plates 15 through a bearing, one end of the adjusting screw 16 passes through the clamping frame 14 and is fixedly connected to an adjusting knob 17, and the adjusting screw 16 is threadedly engaged with the clamping frame 14.

[0048] As a preferred solution, in order to achieve effective clamping of carbon fiber composite plates of different lengths and to facilitate the application of pulling force toward both sides to the clamped carbon fiber composite plates, the spacing adjustment assembly 2 includes a hydraulic telescopic rod 7 and two movable seats 8, two vertical rods 13 are respectively fixedly connected to the top of the two movable seats 8, and the two movable seats 8 are both slidably installed on the top of the test base 1, and the opposite sides of the two movable seats 8 are respectively fixedly connected with two first tooth plates 9 and two second tooth plates 10, the two first tooth plates 9 are both arranged between the two second tooth plates 10, and a push plate 11 is fixedly connected between the opposite sides of the two first tooth plates 9, the telescopic end of the hydraulic telescopic rod 7 is fixedly connected to one side of the push plate 11, and two first gears 12 are rotatably installed on the top of the test base 1, the first gear 12 is arranged between the first tooth plate 9 and the second tooth plate 10, and the first gear 12 is engaged with the first tooth plate 9 and the second tooth plate 10.

[0049] As a preferred solution, in order to apply a torsional force to the clamped carbon fiber composite plate, the first rotating member 4 includes a first sprocket 18 and a driving sprocket 19, and the first sprocket 18 and the driving sprocket 19 are connected by a first chain 20. One end of the rotating shaft of a clamping frame 14 is fixedly connected to a second gear 21, and one side of the first sprocket 18 is fixedly connected to a third gear 22. The second gear 21 meshes with the third gear 22. The first sprocket 18 is rotatably installed on the side of a vertical pole 13 away from the other vertical pole 13. The second rotating member 5 includes a second sprocket 23 and a driven sprocket 24. The second sprocket 23 and the driven sprocket 24 are connected by a second chain 25. The second sprocket 23 is fixedly connected to one end of the rotating shaft of another clamping frame 14. The driving member 6 includes two mounting plates 26. One side of one mounting plate 26 is fixedly connected to a first servo motor 27. The output end of the first servo motor 27 passes through The mounting plate 26 is fixedly connected to a double-ended splined shaft 28 through a coupling, and one end of the double-ended splined shaft 28 is rotatably connected to one side of the other mounting plate 26 through a bearing. The surface of the movable seat 8 is also provided with a through hole 31 adapted to the double-ended splined shaft 28. The two mounting plates 26 are respectively fixedly connected to both sides of the top of the test base 1, and the driving sprocket 19 and the driven sprocket 24 are respectively sleeved and slidably mounted on the two ends of the double-ended splined shaft 28. As a detailed description, the double-ended splined shaft 28 is a rod-shaped structure with a spline structure at both ends. The surfaces of the driving sprocket 19 and the driven sprocket 24 are provided with spline grooves adapted to the spline structure, and the opposite sides of the driving sprocket 19 and the driven sprocket 24 are respectively in contact with the opposite sides of the two movable seats 8. The opposite sides of the two vertical rods 13 are fixedly connected to an L-shaped limit plate 29, and the two L-shaped limit plates 29 are used in conjunction with the driving sprocket 19 and the driven sprocket 24 respectively.

[0050] In this way, the driving sprocket 19 and the driven sprocket 24 can be driven to rotate by simply rotating the double-ended spline shaft 28, thereby providing support for applying torsional forces in opposite directions on both sides of the clamped carbon fiber composite plate.

[0051] As a preferred solution, in order to ensure the stable movement of the movable seat 8, two auxiliary plates 30 are fixedly connected to the opposite sides of the two mounting plates 26, and the two movable seats 8 are both sleeved and slidably installed on the two auxiliary plates 30, and the bottoms of the two auxiliary plates 30 are respectively in sliding contact with the tops of the two second tooth plates 10. Example 2

[0052] See also Figure 7-12 The difference between this embodiment and embodiment 1 is that the test base 1 is rotatably mounted on a flip support 32, a storage box 33 is placed under the flip support 32, a loading platform 37 is fixed to the top of the flip support 32, a circular baffle 39 is fixed to the top of the loading platform 37, an annular loading rack 40 is rotatably mounted on the top of the circular baffle 39, a loading slot 42 is provided on the annular loading rack 40, a carbon fiber composite plate is inserted into the loading slot 42, and can fall freely in the loading slot 42, corresponding unloading openings are provided on the circular baffle 39 and the loading platform 37, and a blanking guide 38 is installed at the bottom of the loading platform 37 at a position corresponding to the unloading opening;

[0053] Multiple carbon fiber composite panels to be tested can be inserted into the loading slot 42 at one time. By driving the annular loading rack 40 to rotate relative to the circular baffle 39, each carbon fiber composite panel can be moved to the unloading opening position in turn and can fall freely from the unloading opening. The guidance of the unloading guide 38 ensures that the carbon fiber composite panel can accurately fall into the clamping frame 14 on the test base 1, thereby achieving the purpose of automatic intermittent loading. Since the test base 1 can be flipped, when the test base 1 is rotated to the point where the clamping frame 14 is facing upward, the fallen carbon fiber composite panel can be caught and tested. After the test is completed, the test base 1 can be driven to rotate so that the clamping frame 14 is facing downward, so that the carbon fiber composite panel after the test is completed automatically falls into the storage box 33 for collection.

[0054] In order to drive the overall operation, a fourth gear 34 is fixed on the mounting shaft of the test base 1, and a fifth gear 35 and a sixth gear 43 are rotatably mounted on the flip support 32. The fifth gear 35 is an incomplete gear, and the fifth gear 35 is located between the fourth gear 34 and the sixth gear 43. A first bevel gear 44 is fixed on the mounting shaft of the sixth gear 43. A vertical transmission shaft 48 and a horizontal transmission shaft 45 are rotatably mounted on the loading platform 37. A gear ring 41 is fixed to the outside of the annular loading rack 40. A seventh gear 46 and a second bevel gear 47 are fixed at both ends of the horizontal transmission shaft 45. A third bevel gear 49 and a fourth bevel gear 50 are fixed at both ends of the vertical transmission shaft 48. The fourth bevel gear 50 is meshed with the first bevel gear 44, the second bevel gear 47 is meshed with the third bevel gear 49, and the seventh gear 46 is meshed with the gear ring 41. The fifth gear 35 is driven to rotate by the second servo motor 36;

[0055] The fifth gear 35 can be driven to rotate by the second servo motor 36. Since the fifth gear 35 is an incomplete gear and the outer gear tooth distribution angle of the fifth gear 35 is less than 180 degrees, it is ensured that it will not engage with the fourth gear 34 and the sixth gear 43 at the same time during the rotation process. When the gear teeth of the fifth gear 35 rotate to face downward and engage with the fourth gear 34, it can drive the fourth gear 34 to rotate 360 ​​degrees, thereby driving the test base 1 to flip 360 degrees, thereby automatically putting down the carbon fiber composite plate that has been tested. When the gear teeth of the fifth gear 35 rotate to face upward, it can drive the sixth gear 43 to rotate. Angle, and through the fourth bevel gear 50 meshing with the first bevel gear 44, the second bevel gear 47 meshing with the third bevel gear 49 and the seventh gear 46 meshing with the gear ring 41, the annular loading rack 40 is driven to rotate an angle, and this angle is exactly the angle between the placement positions of the two carbon fiber composite panels, thereby achieving the purpose of driving the annular loading rack 40 to rotate and load. Only a second servo motor 36 can be used to drive the annular loading rack 40 to rotate and load and drive the test base 1 to flip and unload. The two actions can be performed separately and successively, which is more convenient to use, does not require manual intervention, and is more efficient. Example 3

[0056] See also Figure 1-12 A method for testing torsional deformation of a carbon fiber unidirectional resin composite plate comprises the following steps:

[0057] Step 1: Drive the annular loading rack 40 to rotate, driving a carbon fiber composite plate to fall into the two clamping frames 14, turn the adjusting knob 17, the adjusting knob 17 drives the adjusting screw 16 to rotate, and the adjusting screw 16 drives the extrusion plate 15 to clamp and position the carbon fiber composite plate;

[0058] Among them, when it is necessary to adjust the distance between the two clamping frames 14, the hydraulic telescopic rod 7 is controlled to be extended and retracted, and the hydraulic telescopic rod 7 drives the push plate 11 to move the two first tooth plates 9, and the two first tooth plates 9 drive a moving seat 8 to move. During the process, the two first tooth plates 9 respectively drive a first gear 12 to move the second tooth plate 10, so that the two second tooth plates 10 push the other moving seat 8 to move. After the two moving seats 8 move the two clamping frames 14 to a position adapted to the length of the carbon fiber composite plate through the vertical rod 13, the extension and retraction of the hydraulic telescopic rod 7 is stopped;

[0059] Step 2: Control the hydraulic telescopic rod 7 to extend at a set pressure. The hydraulic telescopic rod 7 pushes the push plate 11 to move the two first tooth plates 9. The two first tooth plates 9 drive a moving seat 8 to move. During the process, the two first tooth plates 9 respectively drive a first gear 12 to move the second tooth plate 10, so that the two second tooth plates 10 push the other moving seat 8 to move. At this time, the two moving seats 8 move in opposite directions. The moving seat 8 drives the vertical rod 13 to move the clamping frame 14. The clamping frame 14 drives the adjusting screw 16 to make the extrusion plate 15 apply tension to both sides of the carbon fiber composite plate.

[0060] Step 3: Start the first servo motor 27. The first servo motor 27 drives the double-ended spline shaft 28 to rotate. The two ends of the double-ended spline shaft 28 respectively drive the driving sprocket 19 and the driven sprocket 24 to rotate.

[0061] The driving sprocket 19 drives the first sprocket 18 to rotate through the first chain 20, the first sprocket 18 drives the third gear 22 to rotate, the third gear 22 drives the second gear 21 to rotate synchronously, and the second gear 21 drives a clamping frame 14 to rotate through the rotating shaft, applying a torsional force to one side of the carbon fiber composite plate;

[0062] The driven sprocket 24 drives the second sprocket 23 to rotate through the second chain 25, and the second sprocket 23 drives the other clamping frame 14 to rotate through the rotating shaft, applying a torsional force in the opposite direction to the other side of the carbon fiber composite plate;

[0063] Step 4: After the experiment is completed, reversely rotate the adjustment knob 17 to loosen the carbon fiber composite plate, driving the test base 1 to flip 360 degrees. When the clamping frame 14 on the test base 1 faces downward, the carbon fiber composite plate will automatically fall into the storage box 33.

[0064] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0065] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A torsional tensile deformation test device for carbon fiber unidirectional resin composite panels, comprising a test base (1), characterized in that: The top of the test base (1) is provided with a spacing adjustment component (2), and the two output ends of the spacing adjustment component (2) are respectively provided with a group of clamping components (3), and the two groups of clamping components (3) are used in conjunction with each other to clamp and position the carbon fiber composite plate. The two groups of clamping components (3) are also provided with a first rotating member (4) and a second rotating member (5) on opposite sides thereof, and the top of the test base (1) is fixedly connected with a driving member (6) used in conjunction with the first rotating member (4) and the second rotating member (5), and the driving member (6) is used to drive the first rotating member (4) and the second rotating member (5) to rotate, so that the two groups of clamping components (3) rotate in opposite directions; The test base (1) is rotatably mounted on a flip support (32), a storage box (33) is placed below the flip support (32), a loading platform (37) is fixed to the top of the flip support (32), a circular baffle (39) is fixed to the top of the loading platform (37), an annular loading rack (40) is rotatably mounted on the top of the circular baffle (39), a loading slot (42) is provided on the annular loading rack (40), a carbon fiber composite plate is inserted into the loading slot (42), and can fall freely in the loading slot (42), a corresponding unloading opening is provided on the circular baffle (39) and the loading platform (37), and a blanking guide (38) is installed at a position corresponding to the unloading opening at the bottom of the loading platform (37); A fourth gear (34) is fixed on the mounting shaft of the test base (1), and a fifth gear (35) and a sixth gear (43) are rotatably mounted on the flip support (32), respectively. The fifth gear (35) is an incomplete gear, and the fifth gear (35) is located between the fourth gear (34) and the sixth gear (43). The external gear tooth distribution angle of the fifth gear (35) is less than one hundred and eighty degrees, ensuring that it will not engage with the fourth gear (34) and the sixth gear (43) at the same time during the rotation process. A first bevel gear (44) is fixed on the mounting shaft of the sixth gear (43). A vertical transmission shaft (48) and a horizontal transmission shaft (45) are rotatably mounted on the feeding platform (37), a gear ring (41) is fixed to the outside of the annular feeding frame (40), a seventh gear (46) and a second bevel gear (47) are fixed to both ends of the horizontal transmission shaft (45), a third bevel gear (49) and a fourth bevel gear (50) are fixed to both ends of the vertical transmission shaft (48), the fourth bevel gear (50) is meshed with the first bevel gear (44), the second bevel gear (47) is meshed with the third bevel gear (49), and the seventh gear (46) is meshed with the gear ring (41).

2. The torsional tensile deformation testing device for carbon fiber unidirectional resin composite panels according to claim 1, characterized in that: The spacing adjustment component (2) includes a hydraulic telescopic rod (7) and two movable seats (8), two first tooth plates (9) and two second tooth plates (10) are fixedly connected to opposite sides of the two movable seats (8), the two first tooth plates (9) are arranged between the two second tooth plates (10), and a push plate (11) is fixedly connected between opposite sides of the two first tooth plates (9), and the telescopic end of the hydraulic telescopic rod (7) is fixedly connected to one side of the push plate (11); The two movable seats (8) are both slidably mounted on the top of the test base (1), and two first gears (12) are rotatably mounted on the top of the test base (1), wherein the first gears (12) are arranged between the first tooth plate (9) and the second tooth plate (10), and the first gears (12) are meshed with the first tooth plate (9) and the second tooth plate (10).

3. The torsional tensile deformation testing device for carbon fiber unidirectional resin composite panels according to claim 2, characterized in that: The two groups of clamping assemblies (3) each include a vertical rod (13), a clamping frame (14) is rotatably mounted on one side of the vertical rod (13) via a rotating shaft, extrusion plates (15) are slidably mounted on both the front and rear sides of the inner cavity of the clamping frame (14), and an adjusting screw (16) is rotatably mounted on the opposite sides of the two extrusion plates (15) via a bearing, one end of the adjusting screw (16) passes through the frame (14) and is fixedly connected to an adjusting knob (17), and the adjusting screw (16) is threadedly engaged with the clamping frame (14); The two vertical poles (13) are respectively fixedly connected to the tops of the two movable seats (8).

4. The torsional tensile deformation testing device for carbon fiber unidirectional resin composite panels according to claim 3, characterized in that: The first rotating member (4) includes a first sprocket (18) and a driving sprocket (19), the first sprocket (18) and the driving sprocket (19) are connected to each other by a first chain (20), one end of a rotating shaft of the clamping frame (14) is fixedly connected to a second gear (21), one side of the first sprocket (18) is fixedly connected to a third gear (22), and the second gear (21) is meshed with the third gear (22); The first sprocket (18) is rotatably mounted on a side of one upright pole (13) away from the other upright pole (13).

5. The torsional tensile deformation testing device for carbon fiber unidirectional resin composite panels according to claim 4, characterized in that: The second rotating member (5) comprises a second sprocket (23) and a driven sprocket (24), and the second sprocket (23) and the driven sprocket (24) are connected in transmission via a second chain (25); The second sprocket (23) is fixedly connected to one end of the rotating shaft of another clamping frame (14).

6. The torsional tensile deformation testing device for carbon fiber unidirectional resin composite panels according to claim 5, characterized in that: The driving member (6) includes two mounting plates (26), one side of one mounting plate (26) is fixedly connected to a first servo motor (27), an output end of the first servo motor (27) passes through the mounting plate (26) and is fixedly connected to a double-headed spline shaft (28) via a coupling, and one end of the double-headed spline shaft (28) is rotatably connected to one side of the other mounting plate (26) via a bearing; The two mounting plates (26) are respectively fixedly connected to the two sides of the top of the test base (1); the driving sprocket (19) and the driven sprocket (24) are respectively sleeved and slidably mounted on the two ends of the double-headed spline shaft (28); and the opposite sides of the driving sprocket (19) and the driven sprocket (24) are respectively in contact with the opposite sides of the two movable seats (8); the opposite sides of the two vertical rods (13) are both fixedly connected with L-shaped limit plates (29); the two L-shaped limit plates (29) are respectively used in conjunction with the driving sprocket (19) and the driven sprocket (24).

7. The torsional tensile deformation testing device for carbon fiber unidirectional resin composite panels according to claim 6, characterized in that: Two auxiliary plates (30) are fixedly connected to opposite sides of the two mounting plates (26), the two movable seats (8) are sleeved and slidably mounted on the two auxiliary plates (30), and the bottoms of the two auxiliary plates (30) are in sliding contact with the tops of the two second tooth plates (10) respectively; The surface of the movable seat (8) is also provided with a through hole (31) adapted to the double-headed spline shaft (28).

8. A method for testing torsional tensile deformation of a carbon fiber unidirectional resin composite plate, carried out by the torsional tensile deformation testing device for a carbon fiber unidirectional resin composite plate according to claim 7, characterized in that: The following steps are involved: Step 1: driving the annular loading rack (40) to rotate, driving a carbon fiber composite plate to fall into two clamping frames (14), rotating the adjusting knob (17), the adjusting knob (17) driving the adjusting screw (16) to rotate, and the adjusting screw (16) driving the extrusion plate (15) to clamp and position the carbon fiber composite plate; Step 2: Control the hydraulic telescopic rod (7) to extend at a set pressure, and the hydraulic telescopic rod (7) pushes the push plate (11) to move the two first tooth plates (9), and the two first tooth plates (9) drive a moving seat (8) to move. During the process, the two first tooth plates (9) respectively drive a first gear (12) to move the second tooth plate (10), so that the two second tooth plates (10) push another moving seat (8) to move. At this time, the two moving seats (8) move in opposite directions, and the moving seat (8) drives the vertical rod (13) to move the clamping frame (14), and the clamping frame (14) drives the adjusting screw (16) to make the extrusion plate (15) apply a pulling force to both sides of the carbon fiber composite plate; Step 3: Start the first servo motor (27). The first servo motor (27) drives the double-headed spline shaft (28) to rotate. The two ends of the double-headed spline shaft (28) respectively drive the driving sprocket (19) and the driven sprocket (24) to rotate: The driving sprocket (19) drives the first sprocket (18) to rotate via the first chain (20), the first sprocket (18) drives the third gear (22) to rotate, the third gear (22) drives the second gear (21) to rotate synchronously, and the second gear (21) drives a clamping frame (14) to rotate via a rotating shaft, thereby applying a torsional force to one side of the carbon fiber composite plate; The driven sprocket (24) drives the second sprocket (23) to rotate via the second chain (25), and the second sprocket (23) drives the other clamping frame (14) to rotate via the rotating shaft, thereby applying a torsional force in the opposite direction to the other side of the carbon fiber composite plate; Step 4: After the experiment is completed, rotate the adjustment knob (17) in the opposite direction to loosen the carbon fiber composite plate, and drive the test base (1) to flip 360 degrees. When the clamping frame (14) on the test base (1) faces downward, the carbon fiber composite plate will automatically fall into the storage box (33).

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