A palm fiber bending elasticity testing device based on multi-angle adjustment

Abstract

This invention relates to the field of palm fiber testing technology, specifically to a palm fiber bending elasticity testing device based on multi-angle adjustment, comprising a clamping device, a point adjustment component, an angle adjustment component, and a loading device; the clamping device is positioned above an electronic scale; the point adjustment component is connected to a base; the angle adjustment component is connected to the clamping device; and the loading device is connected to the point adjustment component. The point adjustment component and the angle adjustment component enable bending elasticity testing at different points and angles. During the test, the loading component drives the clamping component to increase the clamping force on the palm fiber as the bending amount increases, ensuring that the palm fiber does not slip or twist during the test, thus improving detection accuracy. This solves the problems of inaccurate results due to twisting and slippage as the bending amount increases during palm fiber testing, and the inability of single-point, single-angle testing to accurately reflect the elasticity of palm fibers.

Description

Technical Field

[0001] This invention relates to the field of palm fiber testing technology, and more specifically to a palm fiber bending elasticity testing device based on multi-angle adjustment. Background Technology

[0002] Palm fiber is a natural plant fiber extracted from palm trees such as mountain palm and coconut palm. It has good breathability and water permeability, moderate elasticity, and can prevent moisture and increase weight. It is currently mainly used to make mattresses and other products. Its bending elasticity directly determines the comfort, support and durability of the product.

[0003] To ensure that the bending elasticity of palm fibers meets the standards, it is necessary to test their elasticity. Currently, the testing methods for palm fibers generally follow those used for textile fibers, namely, uniaxial tensile testing using a tensile testing machine, and evaluating the material's mechanical properties by measuring the maximum tensile modulus. However, as a new material, continuing to use the testing methods for textile fibers will not yield accurate results. In practical applications such as mattresses, palm fibers mainly provide elastic support through the bending deformation of the laminated structure. Their tensile characteristics are not directly related to their bending elasticity. Furthermore, during the testing process, palm fibers are prone to non-uniform slippage or twisting due to their anisotropy, leading to abrupt changes in the load curve and affecting the accurate capture of the maximum bending deformation parameter. Existing technologies have proposed good solutions to this problem, such as the palm fiber bending elasticity tester with patent publication number CN204405435U. This tester fixes the palm fiber and uses the screw of a micrometer to force it to bend. The elastic reaction force generated by the bending of the palm fiber is transmitted to the electronic scale through the fixing clamp, forming a correspondence between displacement (micrometer reading) and elastic force (electronic scale reading). Compared with testing elasticity by stretching both ends, this method is more accurate and simpler.

[0004] While existing technologies have solved the problem of inaccurate bending deformation parameters measured by tensile methods for palm fibers, the following issues remain: As a natural material, palm fibers have S-shaped and Z-shaped groove structures on their surface, which can lead to asymmetric slippage and torsion during bending due to uneven friction coefficients. Planar clamping and fixing cannot suppress the torsion of palm fibers during bending, and as the amount of bending increases, the palm fibers become more prone to slippage and torsion. When palm fibers twist, abrupt changes occur in the measured displacement-elasticity curve, affecting the determination of the maximum bending deformation. Furthermore, performing only single-point static bending tests on palm fibers cannot simulate the cyclic loads experienced by palm fiber mattresses during actual use.

[0005] In view of the above, in order to overcome the above technical problems, the present invention designs a palm fiber bending elasticity testing device based on multi-angle adjustment. Summary of the Invention

[0006] This invention provides a palm fiber bending elasticity testing device based on multi-angle adjustment. It solves the problems of inaccurate test results caused by torsion and slippage as the bending amount of palm fibers increases during testing, and the inability of single-point, single-angle testing to accurately reflect the elasticity of palm fibers. By using point adjustment components and angle adjustment components, bending elasticity testing can be achieved at different points and angles. The angle adjustment component can initially fix the palm fiber, allowing only unidirectional displacement and ensuring that the palm fiber will not slip or twist when rotated to other angles. When the test begins, the loading device will drive the drive plate to rotate. As the bending amount of the palm fiber increases, the rotating drive plate will drive the clamping arm to increase the clamping force on both ends of the palm fiber, and together with the angle adjustment component, form bidirectional limiting and torsion suppression for the palm fiber, thereby ensuring the accuracy of the test results.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A multi-angle adjustable palm fiber bending elasticity testing device includes a base and an electronic scale, as well as a clamping device, an adjusting device, and a loading device. The clamping device is positioned above the electronic scale. The adjusting device includes a position adjusting component and an angle adjusting component. The position adjusting component is connected to the base. The angle adjusting component is connected to the clamping device. The loading device is connected to the position adjusting component. During elasticity testing, the loading device performs vertical movement to drive the clamping device to move along the palm fiber axis.

[0009] Preferably, the clamping device includes a mounting base, a clamping seat, a clamping arm, and a drive rotating plate; the mounting base is threadedly connected to the base, and a directional guide rail is provided on the mounting base; the clamping seat is slidably mounted on the directional guide rail, and is located on the electronic scale during elasticity testing; the clamping seat has a rotating groove, and four clamping grooves are arranged in a circumferential array on the inner wall of the rotating groove; the clamping arm is slidably mounted in the clamping groove and connected by a spring; the drive rotating plate has a drive groove, and the drive rotating plate is connected to the clamping arm through the drive groove.

[0010] In the above scheme, the mounting base and the base are connected by threads, which can freely change the clamping distance to adapt to the elasticity test of palm fibers of different lengths; the clamping seat is slidably mounted on the mounting base, which can ensure that the clamping seat will not shift horizontally during the elasticity test, thus ensuring the accuracy of the test results; when the drive plate rotates, it can drive the clamping arm to clamp the palm fiber through the drive groove.

[0011] Preferably, the clamping arm includes a horizontal arm and a vertical arm; the horizontal arm is slidably installed in a clamping groove in the horizontal direction, and a vertical clamping plate is provided on the horizontal arm; the vertical arm is slidably installed in a clamping groove in the vertical direction, and a horizontal clamping plate is provided on the vertical arm, and both the vertical arm and the horizontal arm are provided with fixed angles; the vertical clamping plate and the horizontal clamping plate are perpendicular to each other.

[0012] In the above scheme, the fixed angle allows the horizontal arm and the vertical arm to slide to a state where the two opposing horizontal or vertical clamps are completely in contact, ensuring that the palm fiber can be clamped. Furthermore, when the vertical and horizontal clamps clamp the palm fiber, the fixed angle can be partially embedded into the surface of the palm fiber, further limiting the palm fiber during the test and preventing it from sliding or twisting.

[0013] Preferably, the inner surfaces of the vertical clamping plate and the horizontal clamping plate are both serrated surfaces, and the serrations on the serrated surfaces of the two are in opposite directions.

[0014] In the above scheme, since the serrations on the vertical and horizontal clamps are in opposite directions, the palm fibers are more firmly fixed and less prone to slippage or torsion. In the axial direction, when the palm fibers tend to slide in one direction of the serrations, the serrations in the other direction will prevent them from sliding, thus preventing them from sliding in the axial direction. In the radial direction, if only horizontal clamping force exists, it can only restrict the lateral movement of the palm fibers, but cannot constrain the vertical degree of freedom. Here, the vertical and horizontal clamps can simultaneously restrict the horizontal and vertical degrees of freedom, and the force on the palm fibers will be more uniform. On the one hand, it can effectively prevent radial displacement, and on the other hand, the friction provided by the vertical and horizontal clamps can balance the unbalanced torque on them, effectively suppressing torsion.

[0015] Preferably, the position adjustment device includes a mounting frame, a horizontal slide rail, and a micrometer; the mounting frame is mounted on a base; the horizontal slide rail is mounted on the mounting frame; and the micrometer is slidably mounted on the horizontal slide rail.

[0016] In the above scheme, the micrometer can be adjusted to different positions by sliding on the horizontal slide rail, so as to conduct elasticity tests on different points of the palm fiber, thereby achieving the purpose of testing different points, obtaining elasticity data of different points of the palm fiber, and ensuring more accurate test results.

[0017] Preferably, the angle adjustment assembly includes a one-way rotating ring and a two-way rotating ring; the one-way rotating ring and the two-way rotating ring are respectively mounted on two clamping seats, and the one-way rotating ring and the two-way rotating ring allow the brown fibers to pass through in the same direction.

[0018] In the above scheme, the palm fiber can be passed through and initially fixed by one-way swivel ring one and one-way swivel ring two, making it difficult to rotate and slide in the opposite direction. This facilitates installation before testing and allows switching test angles without removing the palm fiber again. Simply reset the micrometer to loosen the vertical and horizontal clamps, and then rotate one-way swivel ring one and one-way swivel ring two. The operation is simpler and the rotation angle is more precise than directly removing the palm fiber to rotate, resulting in more accurate test results. In addition, the vertical and horizontal clamps can be used to firmly fix the fiber during the test.

[0019] Preferably, the loading device includes a drive gear, a telescopic rod, a rack groove, a drive rack, and a loading hook; the drive gear is connected to a drive rotating plate; the telescopic rod is connected to a micrometer; the rack groove is formed on a clamping seat; the drive rack is connected to the telescopic rod and is slidably installed in the rack groove; the loading hook is connected to the telescopic rod.

[0020] In the above scheme, when the micrometer moves vertically during the elasticity test, it will drive the drive rack to move vertically as well. The drive rack will drive the drive gear to rotate, and the drive gear will cause the drive plate to rotate. When the drive plate rotates, the drive groove squeezes the clamping arm, causing the clamping arm to slide and increase the clamping force of the vertical and horizontal clamping plates on the brown fiber. The clamping force of the vertical and horizontal clamping plates on the brown fiber increases with the degree of bending deformation of the brown fiber. By dynamically increasing the clamping force, the stress distribution can be more uniform, the stress diffusion time inside the fiber can be shortened, and the local stress can be prevented from exceeding the yield strength. It can also improve the frictional stability during the test, ensuring that the brown fiber will not slip or twist during the increase of bending force, which would lead to inaccurate test results. However, if too much clamping force is applied to the brown fiber at the beginning, it will cause plastic deformation due to pressure loss on the surface of the brown fiber. During the test, the plastic pressure loss at both ends will cause the fiber to break before reaching the maximum elastic deformation, resulting in inaccurate test results.

[0021] Preferably, the telescopic rod includes a ring sleeve, a fixed inner rod, and a telescopic outer rod; the ring sleeve is fitted onto the micrometer; the fixed inner rod is connected to the ring sleeve; one end of the telescopic outer rod is slidably installed inside the fixed inner rod, and the other end is connected to the drive rack.

[0022] In the above scheme, during the spiral rotation and extension of the micrometer, the telescopic outer rod is connected to the drive rack, and the drive rack is limited and guided by the rack groove, thus ensuring that the ring sleeve on the micrometer will not rotate. The ring sleeve will drive the drive rack and loading hook to move vertically with the vertical movement of the micrometer, thereby bending the palm fiber, and gradually increasing the clamping force on both ends of the palm fiber as the palm fiber bends.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Compared with existing palm fiber bending elasticity testing devices, this invention, by setting up a clamping device and a loading device, ensures that the clamping force exerted by the vertical and horizontal clamping plates on the palm fiber increases with the degree of bending deformation during the test. By dynamically increasing the clamping force, the stress distribution becomes more uniform, the stress diffusion time inside the fiber is shortened, and local stress is prevented from exceeding the yield strength. Furthermore, the frictional stability during the test is improved, ensuring that the palm fiber will not slip or twist during the increase of bending force, thus preventing inaccurate test results. Moreover, compared to applying excessive clamping force to the palm fiber at the beginning, it can avoid plastic deformation caused by pressure loss on the surface of the palm fiber, thereby preventing the phenomenon of breakage before reaching the maximum elastic deformation due to plastic pressure loss at both ends during the test.

[0025] 2. This invention uses vertical and horizontal clamps that are perpendicular to each other, and provides sawtooth surfaces with opposite directions on the vertical and horizontal clamps. In the axial direction, when the brown fiber tends to slide in one direction of the sawtooth, the sawtooth in the other direction will prevent it from sliding, thus preventing it from sliding in the axial direction. In the radial direction, the vertical and horizontal clamps can simultaneously restrict the brown fiber's horizontal and vertical degrees of freedom. Furthermore, the clamping force applied by the vertical and horizontal clamps from multiple directions can make the brown fiber more evenly stressed. At the same time, the vertical and horizontal clamps can provide sufficient friction to balance the unbalanced torque on the brown fiber, ensuring that it is not prone to twisting and sliding, thereby ensuring the accuracy of the test results.

[0026] 3. This invention, by setting up a position adjustment component and an angle adjustment component, can freely adjust the position of the micrometer and the angle of the palm fiber. Furthermore, the one-way rotating ring one and one-way rotating ring two can unidirectionally limit and initially fix the palm fiber. When the vertical clamp and the horizontal clamp are released, the rotation of the one-way rotating ring one and one-way rotating ring two can drive the palm fiber to rotate, thereby adjusting to the angle to be tested. During this process, the palm fiber does not rotate relative to the one-way rotating ring one and one-way rotating ring two, thus ensuring that the bending elasticity of the palm fiber at different angles can be accurately tested. In addition, the one-way rotating ring one and one-way rotating ring two can cooperate with the vertical clamp and the horizontal clamp to further ensure that the palm fiber will not slip or rotate during the test, ensuring the accuracy of the test results. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is an overall structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the clamping seat of the present invention;

[0030] Figure 3 This is a cross-sectional view of the clamping device of the present invention;

[0031] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle;

[0032] Figure 5 for Figure 3 Enlarged view of the structure at point B in the middle;

[0033] Figure 6 for Figure 3 Enlarged view of the structure at point C;

[0034] Figure 7 This is an exploded view of the single-sided clamping device and angle adjustment assembly of the present invention;

[0035] Figure 8 This is a side sectional view of the present invention;

[0036] In the diagram: 1. Base; 2. Electronic scale; 3. Clamping device; 31. Mounting base; 311. Directional guide rail; 32. Clamping seat; 321. Rotating groove; 322. Clamping groove; 33. Clamping arm; 331. Horizontal arm; 3311. Vertical clamping plate; 33111. Serrated surface; 332. Vertical arm; 3321. Horizontal clamping plate; 333. Fixed angle; 34. Drive rotating plate; 341. Drive groove; 4. Adjustment device; 41. Point adjustment assembly; 411. Mounting bracket; 412. Horizontal slide rail; 413. Micrometer; 42. Angle adjustment assembly; 421. One-way rotating ring one; 422. One-way rotating ring two; 5. Loading device; 51. Drive gear; 52. Telescopic rod; 521. Ring body; 522. Fixed inner rod; 523. Telescopic outer rod; 53. Rack groove; 54. Drive rack; 55. Loading hook. Detailed Implementation

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] Please see Figures 1 to 8 This invention provides a palm fiber bending elasticity testing device based on multi-angle adjustment, the technical solution of which is as follows:

[0039] As a specific embodiment of the present invention, refer to Figure 1 and Figure 2 A multi-angle adjustable palm fiber bending elasticity testing device includes a base 1 and an electronic scale 2; it also includes a clamping device 3, an adjusting device 4, and a loading device 5; the clamping device 3 is positioned above the electronic scale 2; the adjusting device 4 includes a point adjustment component 41 and an angle adjustment component 42; the point adjustment component 41 is connected to the base 1; the angle adjustment component 42 is connected to the clamping device 3; the loading device 5 is connected to the point adjustment component 41, and during the elasticity test, the loading device 5 moves vertically to drive the clamping device 3 to move in the direction of the palm fiber axis.

[0040] As a specific embodiment of the present invention, refer to Figure 2 , Figure 4 and Figure 5 The clamping device 3 includes a mounting base 31, a clamping base 32, a clamping arm 33, and a drive rotating plate 34. The mounting base 31 is connected to the base 1 by a thread, and the bottom of the mounting base 31 does not contact the electronic scale 2. A directional guide rail 311 is provided on the mounting base 31. The clamping base 32 is slidably mounted on the directional guide rail 311, and the clamping base 32 is located on the electronic scale 2 when performing elasticity testing. A rotating groove 321 is provided on the clamping base 32, and four clamping grooves 322 are circumferentially arrayed on the inner wall of the rotating groove 321. The clamping arm 33 is slidably mounted in the clamping groove 322 and connected by a spring. A drive groove 341 is provided on the drive rotating plate 34, and the drive rotating plate 34 is connected to the clamping arm 33 through the drive groove 341. The mounting base 31 and the base 1 are connected by a thread, which can freely change the clamping distance to adapt to the elasticity test of palm fibers of different lengths; the clamping base 32 is slidably mounted on the mounting base 31, which can ensure that the clamping base 32 will not shift horizontally during the elasticity test, thus ensuring the accuracy of the test results; when the drive plate 34 rotates, it can drive the clamping arm 33 to clamp the palm fiber through the drive groove 341.

[0041] As a specific embodiment of the present invention, refer to Figure 4 and Figure 5The clamping arm 33 includes a horizontal arm 331 and a vertical arm 332. The horizontal arm 331 is slidably installed in a clamping groove 322 in the horizontal direction, and a vertical clamping plate 3311 is provided on the horizontal arm 331. The vertical arm 332 is slidably installed in a clamping groove 322 in the vertical direction, and a horizontal clamping plate 3321 is provided on the vertical arm 332. Both the vertical arm 332 and the horizontal arm 331 are provided with a fixing angle 333. The vertical clamping plate 3311 and the horizontal clamping plate 3321 are perpendicular to each other. The fixing angle 333 allows the horizontal arm 331 and the vertical arm 332 to slide to a state where the two opposing vertical clamping plates 3311 or horizontal clamping plates 3321 are completely in contact, ensuring that the brown fiber can be clamped. When the vertical clamping plate 3311 and the horizontal clamping plate 3321 clamp the brown fiber, the fixing angle 333 can be partially embedded in the surface of the brown fiber, so that the brown fiber is further limited during the test, preventing it from sliding or twisting.

[0042] As a specific embodiment of the present invention, refer to Figure 4 and Figure 5 The inner surfaces of the vertical clamping plate 3311 and the horizontal clamping plate 3321 are both serrated surfaces 33111, and the serrations on the serrated surfaces 33111 of the two are in opposite directions. The angle between the serrations and the horizontal plane is between 2 and 10 degrees, which can ensure axial sliding limit without damaging the palm fiber. Because the serrated surfaces 33111 on the vertical clamping plate 3311 and the horizontal clamping plate 3321 have opposite serration directions, the palm fibers can be fixed more firmly and are less prone to slippage or torsion. In the axial direction, when the palm fibers tend to slide in one of the serration directions, the serrations in the other direction will prevent them from sliding, making it impossible for them to slide in the axial direction. In the radial direction, if only horizontal clamping force exists, it can only restrict the lateral movement of the palm fibers, but cannot constrain the vertical degree of freedom. Here, the vertical clamping plate 3311 and the horizontal clamping plate 3321 can simultaneously restrict the horizontal and vertical degrees of freedom, and the force on the palm fibers will be more uniform. On the one hand, it can effectively prevent radial displacement, and on the other hand, the friction provided by the vertical clamping plate 3311 and the horizontal clamping plate 3321 can balance the unbalanced torque it receives, effectively suppressing torsion. The serrated surface 33111 is made of rubber, which can ensure that the palm fibers will not be damaged during the increase of pressure, and the rubber material can provide greater friction to ensure that slippage and torsion will not occur.

[0043] As a specific embodiment of the present invention, refer to Figure 3The position adjustment component 41 includes a mounting frame 411, a horizontal slide rail 412, and a micrometer 413. The mounting frame 411 is mounted on the base 1; the horizontal slide rail 412 is mounted on the mounting frame 411; and the micrometer 413 is slidably mounted on the horizontal slide rail 412. By sliding the micrometer 413 on the horizontal slide rail 412, the micrometer 413 can be adjusted to different positions to perform elasticity tests on the brown fiber at different points, thereby achieving the purpose of testing different points, obtaining elasticity data of the brown fiber at different points, and ensuring more accurate test results.

[0044] As a specific embodiment of the present invention, refer to Figure 3 , Figure 4 and Figure 5 The angle adjustment component 42 includes a one-way rotating ring 421 and a one-way rotating ring 422. The one-way rotating ring 421 and the one-way rotating ring 422 are respectively mounted on two clamping seats 32 (the one-way rotating ring 421 and the one-way rotating ring 422 can be made of rubber and are press-fitted with the rotating groove 321 of the clamping seat 32), and the one-way rotating ring 421 and the one-way rotating ring 422 allow the brown fibers to pass through in the same direction. The palm fiber can be passed through and initially fixed by the one-way rotating ring 421 and the one-way rotating ring 422, making it difficult to rotate and slide in the opposite direction. This facilitates installation before testing and allows for switching test angles without removing the palm fiber. Simply reset the micrometer 413 to loosen the vertical clamp 3311 and the horizontal clamp 3321, and then rotate the one-way rotating ring 421 and the one-way rotating ring 422. This operation is simpler and more precise than directly removing the palm fiber to rotate the angle, resulting in more accurate test results. In addition, the vertical clamp 3311 and the horizontal clamp 3321 can firmly fix the palm fiber during testing. The one-way rotating ring 421 and the one-way rotating ring 422 can be equipped with indicator arrows and have degrees engraved on the clamping base 32, thus allowing for more accurate testing of the bending elasticity of the palm fiber at various angles.

[0045] As a specific embodiment of the present invention, refer to Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8The loading device 5 includes a drive gear 51, a telescopic rod 52, a rack groove 53, a drive rack 54, and a loading hook 55. The drive gear 51 is connected to the drive rotating plate 34; the telescopic rod 52 is connected to the micrometer 413; the rack groove 53 is formed on the clamping seat 32; the drive rack 54 is connected to the telescopic rod 52 and is slidably installed in the rack groove 53. The radius of curvature of the drive groove 341 needs to be sufficiently large to match the transmission ratio between the drive rack 54 and the drive gear 51 (i.e., proportionally reducing the vertical sliding distance of the micrometer 413 so that the two opposing vertical clamps 3311 and the horizontal clamp 3321 only move slightly), ensuring that within the elastic limit of the palm fiber, the two opposing vertical clamps 3311 and the horizontal clamp 3321 can move within a small distance. The clamping force will not be so tight that the micrometer 413 cannot extend or retract further, and the stability of the clamping force will be ensured. If it is necessary to further ensure that the clamping force is not too large during the clamping process, the drive groove 341 can be set to an irregular shape, so that the drive groove 341 is composed of multiple arcs with different curvatures. As the clamping force increases, the curvature of the drive groove 341 will increase, thereby ensuring that the increase in clamping force will gradually decrease, thus more closely matching the elasticity change curve of the palm fiber. The loading hook 55 is connected to the telescopic rod 52. During the extension and retraction of the micrometer 413, the loading hook 55 will move vertically together with the telescopic rod 52. During this process, since the loading hook 55 is not directly connected to the micrometer 413, it can be ensured that the palm fiber will not be twisted when the loading hook 55 exerts bending force on the palm fiber. When the micrometer 413 moves vertically during the elasticity test, it will drive the drive rack 54 to move vertically as well. The movement of the drive rack 54 will drive the drive gear 51 to rotate, which in turn causes the drive plate 34 to rotate. As the drive plate 34 rotates, the drive groove 341 presses against the clamping arm 33, causing the clamping arm 33 to slide and increase the clamping force of the vertical clamping plate 3311 and the horizontal clamping plate 3321 on the palm fiber. Furthermore, the clamping force of the vertical clamping plate 3311 and the horizontal clamping plate 3321 on the palm fiber increases with the degree of bending deformation of the palm fiber. A larger clamping force, by dynamically increasing the clamping force, can make the stress distribution more uniform, shorten the stress diffusion time inside the fiber to avoid local stress exceeding the yield strength, and improve the frictional stability during the test. This ensures that the brown fiber will not slip or twist during the process of increasing bending force, which would lead to inaccurate test results. On the other hand, applying too large a clamping force to the brown fiber at the beginning will cause plastic deformation due to pressure loss on the surface of the brown fiber. This will cause the fiber to break before reaching the maximum elastic deformation due to plastic pressure loss at both ends during the test, resulting in inaccurate test results.

[0046] As a specific embodiment of the present invention, refer to Figure 3 , Figure 6 and Figure 7The telescopic rod 52 includes a ring body 521, a fixed inner rod 522, and a telescopic outer rod 523. The ring body 521 is fitted onto the micrometer 413. The fixed inner rod 522 is connected to the ring body 521. One end of the telescopic outer rod 523 is slidably installed inside the fixed inner rod 522, and the other end is connected to the drive rack 54. During the spiral rotation and extension of the micrometer 413, the telescopic outer rod 523 is connected to the drive rack 54, and the drive rack 54 is limited and guided by the rack groove 53, thus ensuring that the ring body 521 fitted onto the micrometer 413 does not rotate. Furthermore, the ring body 521 will drive the drive rack 54 and the loading hook 55 to move vertically with the vertical movement of the micrometer 413, thereby bending the palm fiber and gradually increasing the clamping force on both ends of the palm fiber as the palm fiber bends.

[0047] Workflow: Install the mounting base 31 on the appropriate position of the base 1 according to the required length of the palm fiber to be tested. After installation, connect the clamping base 32 to the mounting base 31 and place it on the electronic scale 2. After passing the palm fiber through the angle adjustment component 42 and straightening it, install the angle adjustment component 42 on the clamping base 32 and start the bending elasticity test. Turn the micrometer 413 to make it perform vertical extension and retraction movements, and drive the drive rack 54 and loading hook 55 to move through the micrometer 413, so as to increase the bending amount of the palm fiber and increase the clamping force of the clamping device 3 on the palm fiber.

[0048] Specifically, based on the required length of the palm fiber to be tested, the mounting base 31 is installed at a suitable position on the base 1. After installation, the clamping base 32 is slidably installed onto the mounting base 31 via the directional guide rail 311 and placed on the electronic scale 2. The palm fiber is passed through the one-way rotating ring 421 and the two-way rotating ring 422 and straightened. The one-way rotating ring 421 and the two-way rotating ring 422 are respectively installed into the rotating grooves 321 of the two clamping bases 32. The two ends of the palm fiber are passed through the vertical clamping plate 3311 and the horizontal clamping plate 3321 and straightened. Adjust the micrometer 413 to the appropriate position, then rotate it to make it extend and retract vertically. This will cause the loading hook 55 to move vertically, pulling the palm fiber and causing it to elastically deform. The palm fiber will then generate elastic force, which will be transmitted to the electronic scale 2 through the clamping seat 32. Simply observe the change in the reading on the electronic scale 2; this change represents the magnitude of the elastic force. (The palm fiber can deform upwards or downwards; it is only necessary to ensure that the vertical clamping plate 3311 and the horizontal clamping plate are aligned during the deformation process.) The clamping force exerted by plate 3321 on the palm fiber increases as the pressure increases. During the test, micrometer 413 drives the drive rack 54 to move, which in turn drives the drive gear 51 to rotate. The rotation of drive gear 51 causes drive plate 34 to rotate, and drive plate 34 presses the clamping arm 33 through drive groove 341, allowing the clamping arm 33 to move towards the palm fiber axis. This increases the clamping force exerted by vertical clamping plate 3311 and horizontal clamping plate 3321 on the palm fiber, and also increases the clamping force as the palm fiber bends and deforms. The increased clamping force of the vertical clamping plate 3311 and the horizontal clamping plate 3321 on the palm fiber will also increase, thus ensuring that the palm fiber will not twist or slip during the test, thereby ensuring the accuracy of the test results. When multiple points are required, the micrometer 413 can be slid on the horizontal slide rail 412 to perform multi-point tests. When multiple angle tests are required, after resetting the micrometer 413, rotate the one-way rotating ring 421 and the two-way rotating ring 422 by the same angle to make the palm fiber rotate to the required angle, and then repeat the test process.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as defined by the appended claims and their equivalents.

Claims

1. A palm fiber bending elasticity testing device based on multi-angle adjustment; comprising a base (1) and an electronic scale (2); characterized in that: It also includes a clamping device (3), an adjusting device (4), and a loading device (5); the clamping device (3) is positioned above the electronic scale (2); the adjusting device (4) includes a point adjustment component (41) and an angle adjustment component (42); the point adjustment component (41) is connected to the base (1); the angle adjustment component (42) is connected to the clamping device (3); the loading device (5) is connected to the point adjustment component (41), and when performing elasticity testing, the loading device (5) performs vertical movement to drive the clamping device (3) to move in the direction of the brown fiber axis; The clamping device (3) includes a mounting base (31), a clamping base (32), a clamping arm (33), and a drive rotating plate (34); the mounting base (31) is connected to the base (1) by a thread, and a directional guide rail (311) is provided on the mounting base (31); the clamping base (32) is slidably mounted on the directional guide rail (311), and the clamping base (32) is located on the electronic scale (2) when performing elasticity testing. A rotating groove (321) is provided on the clamping base (32), and four clamping grooves (322) are arranged in a circumferential array on the inner wall of the rotating groove (321); the clamping arm (33) is slidably mounted on the clamping groove (322) and connected by a spring; a drive groove (341) is provided on the drive rotating plate (34), and the drive rotating plate (34) is connected to the clamping arm (33) through the drive groove (341); The position adjustment assembly (41) includes a mounting bracket (411), a horizontal slide rail (412), and a micrometer (413); the mounting bracket (411) is mounted on the base (1); the horizontal slide rail (412) is mounted on the mounting bracket (411); and the micrometer (413) is slidably mounted on the horizontal slide rail (412). The angle adjustment assembly (42) includes a one-way rotating ring one (421) and a one-way rotating ring two (422); the one-way rotating ring one (421) and the one-way rotating ring two (422) are respectively mounted on two clamping seats (32), and the one-way rotating ring one (421) and the one-way rotating ring two (422) allow the brown fibers to pass through in the same direction; The loading device (5) includes a drive gear (51), a telescopic rod (52), a rack groove (53), a drive rack (54), and a loading hook (55); the drive gear (51) is connected to the drive rotating plate (34); the telescopic rod (52) is connected to the micrometer (413); the rack groove (53) is formed on the clamping seat (32); the drive rack (54) is connected to the telescopic rod (52), and the drive rack (54) is slidably installed in the rack groove (53); the loading hook (55) is connected to the telescopic rod (52).

2. The palm fiber bending elasticity testing device based on multi-angle adjustment according to claim 1, characterized in that: The clamping arm (33) includes a horizontal arm (331) and a vertical arm (332); the horizontal arm (331) is slidably installed in a clamping groove (322) in the horizontal direction, and a vertical clamping plate (3311) is provided on the horizontal arm (331); the vertical arm (332) is slidably installed in a clamping groove (322) in the vertical direction, and a horizontal clamping plate (3321) is provided on the vertical arm (332), and a fixed angle (333) is provided on both the vertical arm (332) and the horizontal arm (331); the vertical clamping plate (3311) and the horizontal clamping plate (3321) are perpendicular to each other.

3. The palm fiber bending elasticity testing device based on multi-angle adjustment according to claim 2, characterized in that: The inner surfaces of the vertical clamp (3311) and the horizontal clamp (3321) are both serrated surfaces (33111), and the serrations on the serrated surfaces (33111) of the two are in opposite directions.

4. The palm fiber bending elasticity testing device based on multi-angle adjustment according to claim 1, characterized in that: The telescopic rod (52) includes a ring body (521), a fixed inner rod (522), and a telescopic outer rod (523); the ring body (521) is fitted onto the micrometer (413); the fixed inner rod (522) is connected to the ring body (521); one end of the telescopic outer rod (523) is slidably installed inside the fixed inner rod (522), and the other end is connected to the drive rack (54).

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