Palm fiber bending elasticity testing device based on multi-angle adjustment

Abstract

The invention relates to the technical field of palm fiber testing, in particular to a palm fiber bending elasticity testing device based on multi-angle adjustment, which comprises a clamping device, a point position adjusting assembly, an angle adjusting assembly and a loading device, the clamping device is arranged above the electronic scale; the point location adjusting assembly is connected with the base; the angle adjusting assembly is connected with the clamping device; the loading device is connected with the point location adjusting assembly; through the point position adjusting assembly and the angle adjusting assembly, bending elasticity testing of different point positions and different angles can be achieved, in the testing process, the loading assembly can drive the clamping assembly to increase the clamping force on the palm fibers along with increase of the bending variation of the palm fibers, it is guaranteed that the palm fibers do not slip or twist in the testing process, and the detection precision is improved; the problems that in the palm fiber testing process, torsion and slippage can occur along with the increase of the bending amount, so that the testing result is inaccurate, and single-point single-angle testing cannot reflect the elasticity of the palm fiber practically are solved.

Description

Technical Field

[0001] The invention relates to the technical field of coir fiber testing, and in particular to a coir fiber bending elasticity testing device based on multi-angle adjustment. Background Art

[0002] Palm fiber is a natural plant fiber extracted from palm plants such as mountain palm trees and coconut trees. It has good air permeability and water permeability, moderate elasticity, and is moisture-proof and non-weight-bearing. 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 coir fiber meets the standard, its elasticity needs to be tested. Currently, coir fiber testing generally follows the testing method for textile fibers, that is, uniaxial tensile testing with a tensile testing machine, and the mechanical properties of the material are evaluated by measuring the maximum tensile modulus. However, as a new material, continuing to use the testing method for textile fibers to test the results is not accurate. In practical applications such as mattresses, coir fiber mainly provides elastic support through the bending deformation of the laminated structure. Its tensile properties are not directly related to bending elasticity. In addition, during the test, coir fiber is prone to non-uniform slip or distortion due to the anisotropy of the material, resulting in a sudden change point in the load curve, affecting the accurate capture of the maximum bending deformation parameters. The existing technology has proposed a good solution to this problem, such as the palm fiber bending elasticity tester with patent publication number CN204405435U. The palm fiber is fixed and then the spiral rotation of the micrometer is used 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 corresponding relationship between displacement (micrometer reading) and elastic force (electronic scale indication). Compared with testing elasticity by stretching at both ends, this method is more accurate and simple.

[0004] While existing technologies have solved the problem of inaccurate bending deformation parameters measured using a tensile method for coir, the following problems remain: coir, as a natural material, has S-shaped and Z-shaped groove structures on its surface, which can cause asymmetric slippage and torsion during bending due to uneven friction coefficients. Planar clamping cannot suppress the twisting of coir during bending, and as the bending amount of the coir increases, the coir will slip and twist more easily. When the coir twists, a sudden change point will appear in the measured displacement elasticity curve, affecting the determination of the maximum bending deformation. Furthermore, performing only a single-point static bending test on coir will not be able to simulate the cyclic loads that coir mattresses are subjected to during actual use.

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

[0006] The present invention provides a palm fiber bending elasticity testing device based on multi-angle adjustment, which solves the problem that torsion and slippage will occur as the bending amount increases during the palm fiber testing process, resulting in inaccurate measured results, and that single-point single-angle testing cannot effectively reflect the elasticity of the palm fiber. Bending elasticity tests at different points and angles can be achieved through the point adjustment component and the angle adjustment component, and the angle adjustment component can preliminarily fix the palm fiber, which only allows the palm fiber to be displaced in one direction and can ensure that the palm fiber will not slip or twist when rotated to other angles. When the test starts, the loading device will drive the driving rotary plate to rotate. As the bending change of the palm fiber increases, the rotating driving rotary plate will drive the clamping arm to increase the clamping force on the two ends of the palm fiber, and cooperate with the angle adjustment component to form two-way limiting and torsion suppression for the palm fiber, thereby ensuring the accuracy of the test results.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A palm fiber bending elasticity testing device based on multi-angle adjustment; includes a base and an electronic scale, as well as a clamping device, an adjusting device and a loading device; the clamping device is arranged above the electronic scale; the adjusting device includes a point adjustment component and an angle adjustment component; the point adjustment component is connected to the base; the angle adjustment component is connected to the clamping device; the loading device is connected to the point adjustment component, and when performing the elasticity test, the loading device moves vertically to drive the clamping device to move toward the axis of the palm fiber.

[0009] Preferably, the clamping device includes a mounting seat, a clamping seat, a clamping arm and a driving rotary plate; the mounting seat is connected to the base by a threaded connection, and a directional guide rail is provided on the mounting seat; the clamping seat is slidably mounted on the directional guide rail, and the clamping seat is located on the electronic scale when performing the elasticity test, a rotating groove is provided on the clamping seat, and four clamping grooves are provided in a circumferential array on the inner wall of the rotating groove; the clamping arm is slidably mounted in the clamping groove and is connected by a spring; a driving groove is provided on the driving rotary plate, and the driving rotary plate is connected to the clamping arm through the driving groove.

[0010] In the above scheme, the mounting seat and the base are connected by a threaded connection, and the clamping distance can be freely changed to adapt to the elasticity test of palm fibers of different lengths; the clamping seat is slidably installed on the mounting seat, which can ensure that the clamping seat will not be horizontally offset during the force process during the elasticity test, thereby ensuring the accuracy of the test results; the driving turntable can drive the clamping arm through the driving groove to clamp the palm fiber when rotating.

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

[0012] In the above scheme, the fixed angle can make the horizontal arm and the vertical arm slide to a state where the two relative horizontal splints or vertical splints are completely in fit, ensuring that the palm fiber can be clamped, and when the vertical splint and the horizontal splint clamp the palm fiber, the fixed angle can be partially embedded in the surface of the palm fiber, so that the palm fiber is further limited during the test to prevent it from slipping 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 are in opposite directions.

[0014] In the above scheme, since the serrated surfaces on the vertical and horizontal plywood have opposite serration directions, the palm fiber can be fixed more firmly and is not prone to slippage or twisting. In the axial direction, when the palm fiber tends to slide in one of the serration directions, the serrations in the other direction will prevent it from slipping, making it impossible to slip in the axial direction. In the radial direction, if only horizontal clamping force exists, it can only limit the lateral movement of the palm fiber, and cannot constrain the vertical degree of freedom. Here, the vertical and horizontal plywood can simultaneously limit its horizontal and vertical degrees of freedom, and the force on the palm fiber will be more uniform. On the one hand, it can effectively prevent it from radial displacement, and on the other hand, the friction force provided by the vertical and horizontal plywood can balance the unbalanced torque it is subjected to, effectively suppressing its twisting.

[0015] Preferably, the point adjustment device includes a mounting frame, a horizontal slide rail and a micrometer; the mounting frame is arranged on the base; the horizontal slide rail is arranged 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, and the elasticity test of the palm fiber at different points can be performed, thereby achieving the purpose of testing different points, obtaining the elasticity data of different points of the palm fiber, and ensuring that the test results are more accurate.

[0017] Preferably, the angle adjustment assembly includes a one-way swivel 1 and a one-way swivel 2; the one-way swivel 1 and the one-way swivel 2 are respectively installed on two clamping seats, and the one-way swivel 1 and the one-way swivel 2 allow the palm fiber to pass through in the same direction.

[0018] In the above scheme, the palm fiber can be passed through the one-way swivel one and the one-way swivel two and preliminarily fixed, making it difficult for it to rotate and slide in the opposite direction. It is easy to install before testing, and there is no need to remove the palm fiber when switching the test angle. It is only necessary to reset the micrometer to loosen the vertical and horizontal splints, and then rotate the one-way swivel one and the one-way swivel two. The operation is simpler and the rotation angle is more precise than directly removing the palm fiber, so that the test results are more accurate. In addition, the vertical and horizontal splints can be used to firmly fix the palm fiber during the test.

[0019] Preferably, the loading device includes a driving gear, a telescopic rod, a rack groove, a driving rack and a loading hook; the driving gear is connected to the driving turn plate; the telescopic rod is connected to the micrometer; the rack groove is opened on the clamping seat; the driving rack is connected to the telescopic rod, and the driving rack 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 in the vertical direction during the elastic test, it will drive the driving rack to move vertically. When the driving rack moves, it will drive the driving gear to rotate, and the driving turn plate will rotate through the driving gear. When the driving turn plate rotates, the driving groove squeezes the clamping arm, causing the clamping arm to slide and increase the clamping force of the vertical and horizontal clamps on the palm fiber. The clamping force of the vertical and horizontal clamps on the palm fiber increases with the degree of bending deformation of the palm fiber. By dynamically increasing the clamping force, the stress distribution can be more uniform, the internal stress diffusion time of the fiber can be shortened to avoid local stress breaking through the yield strength, and the friction stability during the test can be improved, ensuring that the palm fiber will not slide or twist during the increase of bending force, resulting in inaccurate test results. Applying too much clamping force to the palm fiber at the beginning will cause plastic deformation due to pressure loss on the surface of the palm fiber, resulting in breaking when the maximum elastic deformation is not reached due to plastic pressure loss at both ends during the test, thereby resulting in inaccurate test results.

[0021] Preferably, the telescopic rod includes an annular sleeve body, a fixed inner rod and a telescopic outer rod; the annular sleeve body is sleeved on the micrometer; the fixed inner rod is connected to the annular sleeve body; one end of the telescopic outer rod is slidably installed in the fixed inner rod, and the other end is connected to the drive rack.

[0022] In the above scheme, during the process of spiral rotation and extension of the micrometer, the telescopic outer rod is connected to the drive rack, and the drive rack is subject to the limiting and guiding effect of the rack groove, thereby ensuring that the ring sleeve body mounted on the micrometer will not rotate, and the ring sleeve body will drive the drive rack and the loading hook to move vertically with the vertical movement of the micrometer, thereby realizing the bending of 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 present invention has the following beneficial effects:

[0024] 1. Compared with the existing brown fiber bending elasticity testing device, the present invention sets a clamping device and a loading device. During the test, the clamping force generated by the vertical clamping plate and the horizontal clamping plate 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 made more uniform, the internal stress diffusion time of the fiber can be shortened to avoid local stress breaking through the yield strength, and the friction stability can be improved during the test, ensuring that the brown fiber will not slide or twist during the increase of the bending force, resulting in inaccurate test results. Compared with applying excessive clamping force to the brown fiber from the beginning, it can avoid plastic deformation due to pressure loss on the surface of the brown fiber, and thus avoid the phenomenon of breaking when the maximum elastic deformation is not reached due to plastic pressure loss at both ends during the test.

[0025] 2. The present invention sets vertical and horizontal plywood that are perpendicular to each other, and sets serrated surfaces with opposite serration directions on the vertical and horizontal plywood. In the axial direction, when the palm fiber tends to slide in one of the serration directions, the serrations in the other direction will prevent it from sliding, making it impossible for it to slide in the axial direction. In the radial direction, the horizontal and vertical degrees of freedom of the palm fiber can be restricted simultaneously by the vertical and horizontal plywood, and the vertical and horizontal plywood apply clamping force from multiple directions to make the palm fiber more evenly stressed. At the same time, the vertical and horizontal plywood can provide sufficient friction to balance the unbalanced torque on the palm fiber, ensuring that it is not prone to twisting and slipping, thereby ensuring the accuracy of the test results.

[0026] 3. The present invention can freely adjust the position of the micrometer and the angle of the palm fiber by setting a point adjustment component and an angle adjustment component, and the one-way swivel one and the one-way swivel two can limit and preliminarily fix the palm fiber in one direction. When the vertical splint and the horizontal splint are loosened, the rotation of the one-way swivel one and the one-way swivel two can drive the palm fiber to rotate, thereby adjusting to the angle required to be tested. During this process, the palm fiber will not rotate relative to the one-way swivel one and the one-way swivel two, thereby ensuring that the bending elastic force of the palm fiber at different angles can be accurately tested. In addition, the one-way swivel one and the one-way swivel two can cooperate with the vertical splint and the horizontal splint to further ensure that no slippage and rotation will occur during the palm fiber testing process, thereby ensuring accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is the 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 is a cross-sectional view of the clamping device of the present invention;

[0031] Figure 4 for Figure 3 A magnified view of the structure at center A;

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

[0033] Figure 6 for Figure 3 A magnified view of the structure at point C in the middle;

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

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

[0036] In the figure: 1, base; 2, electronic scale; 3, clamping device; 31, mounting base; 311, directional guide rail; 32, clamping base; 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, driving plate; 341, driving groove; 4, Adjustment device; 41. Point adjustment assembly; 411. Mounting bracket; 412. Horizontal slide rail; 413. Micrometer; 42. Angle adjustment assembly; 421. One-way swivel 1; 422. One-way swivel 2; 5. Loading device; 51. Drive gear; 52. Telescopic rod; 521. Ring sleeve; 522. Fixed inner rod; 523. Telescopic outer rod; 53. Rack groove; 54. Drive rack; 55. Loading hook. DETAILED DESCRIPTION

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] See also Figures 1 to 8 The present invention provides a device for testing the bending elasticity of palm fiber based on multi-angle adjustment, and the technical solution is as follows:

[0039] As a specific embodiment of the present invention, refer to Figure 1 and Figure 2 , a brown fiber bending elasticity testing device based on multi-angle adjustment; includes a base 1 and an electronic scale 2; also includes a clamping device 3, an adjusting device 4 and a loading device 5; the clamping device 3 is arranged 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. When performing the elasticity test, the loading device 5 moves vertically to drive the clamping device 3 to move toward the axis of the brown fiber.

[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 driving rotating plate 34; the mounting base 31 is connected to the base 1 by a threaded connection, and the bottom of the mounting base 31 does not contact the electronic scale 2, 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 when the elasticity test is performed, the clamping base 32 is located on the electronic scale 2, and a rotating groove 321 is provided on the clamping base 32, and four clamping grooves 322 are provided in a circumferential array on the inner wall of the rotating groove 321; the clamping arm 33 is slidably mounted in the clamping groove 322 and is connected by a spring; a driving groove 341 is provided on the driving rotating plate 34, and the driving rotating plate 34 is connected to the clamping arm 33 through the driving groove 341. The mounting seat 31 is connected to the base 1 by a threaded connection, and the clamping distance can be freely changed to adapt to the elasticity test of palm fibers of different lengths; the clamping seat 32 is slidably installed on the mounting seat 31, which can ensure that the clamping seat 32 will not be horizontally offset during the force process during the elasticity test, thereby ensuring the accuracy of the test results; the driving rotating plate 34 can drive the clamping arm 33 to clamp the palm fiber through the driving slot 341 when rotating.

[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 mounted in the horizontal clamping slot 322. The horizontal arm 331 is provided with a vertical clamping plate 3311. The vertical arm 332 is slidably mounted in the vertical clamping slot 322. The vertical arm 332 is provided with a horizontal clamping plate 3321. Both the vertical arm 332 and the horizontal arm 331 are provided with a fixed angle 333. The vertical clamping plate 3311 and the horizontal clamping plate 3321 are perpendicular to each other. The fixed angle 333 allows the horizontal arm 331 and the vertical arm 332 to slide to a state where the two relative vertical clamping plates 3311 or the horizontal clamping plates 3321 are completely in contact with each other, ensuring that the palm fiber can be clamped. When the vertical clamping plates 3311 and the horizontal clamping plates 3321 clamp the palm fiber, the fixed angle 333 can be partially embedded in the surface of the palm fiber, so that the palm fiber is further limited during the test and prevented from slipping or twisting.

[0042] As a specific embodiment of the present invention, refer to Figure 4 and Figure 5 The inner surfaces of the vertical splint 3311 and the horizontal splint 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 slip limitation without damaging the palm fiber. Since the serrated surfaces 33111 on the vertical plywood 3311 and the horizontal plywood 3321 have opposite serrated directions, the brown fiber can be fixed more firmly and is not prone to slippage or twisting. In the axial direction, when the brown fiber tends to slide in one of the serrated directions, the serrations in the other direction will prevent it from slipping, making it impossible to slip in the axial direction. In the radial direction, if only horizontal clamping force exists, it can only limit the lateral movement of the brown fiber, and the vertical degree of freedom cannot be constrained. Here, the vertical plywood 3311 and the horizontal plywood 3321 can simultaneously limit its horizontal and vertical degrees of freedom, and the force on the brown fiber will be more uniform. On the one hand, it can effectively prevent it from radial displacement. On the other hand, the friction provided by the vertical plywood 3311 and the horizontal plywood 3321 can balance the unbalanced torque it receives, effectively suppressing its twisting. The serrated surface 33111 is set to rubber material. On the one hand, it can ensure that the brown fiber will not be damaged during the increase of pressure. On the other hand, the rubber material can provide greater friction to ensure that it will not slip or twist.

[0043] As a specific embodiment of the present invention, refer to Figure 3The point adjustment assembly 41 includes a mounting frame 411, a horizontal slide 412, and a micrometer 413. The mounting frame 411 is mounted on the base 1; the horizontal slide 412 is mounted on the mounting frame 411; and the micrometer 413 is slidably mounted on the horizontal slide 412. By sliding the micrometer 413 on the horizontal slide 412, the micrometer 413 can be adjusted to different positions to perform elasticity tests on different points of the palm fiber, thereby achieving the purpose of testing different points, obtaining elasticity data at different points of the palm fiber, 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 assembly 42 includes a one-way swivel 421 and a one-way swivel 422; the one-way swivel 421 and the one-way swivel 422 are respectively installed on the two clamping seats 32 (the one-way swivel 421 and the one-way swivel 422 can be made of rubber material and adopt an interference fit with the rotating groove 321 of the clamping seat 32), and the one-way swivel 421 and the one-way swivel 422 allow the palm fiber to pass through in the same direction. The one-way swivel 1 421 and the one-way swivel 2 422 can pass the palm fiber through and preliminarily fix it, making it difficult to rotate and reverse slip, making it easy to install before testing, and there is no need to remove the palm fiber when switching the test angle. It is only necessary to reset the micrometer 413 to loosen the vertical clamp 3311 and the horizontal clamp 3321, and then rotate the one-way swivel 1 421 and the one-way swivel 2 422. The operation is simpler and the rotation angle is more precise than directly removing the palm fiber, making the test result more accurate. In addition, during the test, the vertical clamp 3311 and the horizontal clamp 3321 can be used to firmly fix the palm fiber. Indicator arrows can be set on the one-way swivel 1 421 and the one-way swivel 2 422, and degrees can be engraved on the clamping seat 32, so as to more accurately test 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 driving gear 51, a telescopic rod 52, a rack groove 53, a driving rack 54 and a loading hook 55; the driving gear 51 is connected to the driving rotating plate 34; the telescopic rod 52 is connected to the micrometer 413; the rack groove 53 is opened on the clamping seat 32; the driving rack 54 is connected to the telescopic rod 52, and the driving rack 54 is slidably installed in the rack groove 53, and it is necessary to ensure that the curvature radius of the driving groove 341 is large enough, and the transmission ratio between the driving rack 54 and the driving gear 51 is matched (that is, the vertical sliding distance of the micrometer 413 is proportionally reduced, so that only micro-movement is performed between the two relative vertical splints 3311 and the horizontal splint 3321), which can ensure that within the elastic limit of the palm fiber, the two relative vertical splints 3311 and the horizontal splint 3321 The loading hook 55 is connected to the telescopic rod 52, and the loading hook 55 will move vertically with the telescopic rod 52 during the extension and retraction of the micrometer 413. During this process, since the loading hook 55 is not directly connected to the micrometer 413, it can be ensured that the loading hook 55 will not cause the palm fiber to twist when generating a bending force on the palm fiber. When the micrometer 413 is subjected to elasticity testing and moves in the vertical direction, the drive rack 54 will be driven to move vertically together. When the drive rack 54 moves, the drive gear 51 will be driven to rotate, and the drive rotating plate 34 will be rotated through the drive gear 51. When the drive rotating plate 34 rotates, the drive slot 341 squeezes 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. The clamping force of the vertical clamping plate 3311 and the horizontal clamping plate 3321 on the palm fiber increases as the degree of bending deformation of the palm fiber increases. And if the clamping force becomes larger, the stress distribution can be made more uniform by dynamically increasing the clamping force, the stress diffusion time inside the fiber can be shortened to avoid local stress breaking through the yield strength, and the friction stability can be improved during the test, ensuring that the brown fiber will not slide or twist during the increase of bending force, resulting in inaccurate test results; and applying too much clamping force to the brown fiber at the beginning will cause the surface pressure loss of the brown fiber to cause plastic deformation, so that during the test, due to the plastic pressure loss at both ends, the fiber will be broken when the maximum elastic deformation is not reached, 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 an annular sleeve 521, a fixed inner rod 522, and a telescopic outer rod 523. The annular sleeve 521 is mounted on the micrometer 413. The fixed inner rod 522 is connected to the annular sleeve 521. One end of the telescopic outer rod 523 is slidably mounted within the fixed inner rod 522, and the other end is connected to the driving rack 54. As the micrometer 413 spirally rotates and extends, the telescopic outer rod 523 is connected to the driving rack 54, and the driving rack 54 is guided by the rack groove 53. This ensures that the annular sleeve 521 mounted on the micrometer 413 does not rotate. The annular sleeve 521 drives the driving rack 54 and the loading hook 55 to move vertically with the vertical movement of the micrometer 413, thereby bending the palm fiber. As the palm fiber bends, the clamping force on both ends of the palm fiber gradually increases.

[0047] Workflow: Install the mounting base 31 on the appropriate position of the base 1 according to the 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. Pass the palm fiber through the angle adjustment component 42 and straighten it. Then 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 telescopic movement, and drive the rack 54 and the 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, the mounting seat 31 is installed at a suitable position of the base 1 according to the length of the palm fiber to be tested. After the installation, the clamping seat 32 is slidably installed on the mounting seat 31 through the directional guide rail 311 and placed on the electronic scale 2. The palm fiber is passed through the one-way swivel 1 421 and the one-way swivel 2 422 and straightened. The one-way swivel 1 421 and the one-way swivel 2 422 are respectively installed on the rotating grooves 321 of the two clamping seats 32. The two ends of the palm fiber are passed through the vertical clamping plate 3311 and the horizontal clamping plate 3321 and straightened. When the scale 413 is adjusted to a suitable position, the micrometer 413 is screwed to make the micrometer 413 perform telescopic movement in the vertical direction, and drive the loading hook 55 to perform vertical movement. The loading hook 55 will pull the palm fiber to make it elastically deformed. At this time, the palm fiber will generate elastic force, and the elastic force is transmitted to the electronic scale 2 through the clamping seat 32. It is only necessary to observe the change in the reading of the electronic scale 2. The change value is the size of the elastic force (the palm fiber can be deformed upward or downward. It is only necessary to ensure that the vertical clamping plate 3311 and the horizontal clamping plate are in the same direction during the deformation process). The clamping force generated by the plate 3321 on the palm fiber is increased). During the test, the micrometer 413 will drive the drive rack 54 to move, and the drive rack 54 will drive the drive gear 51 to rotate. The rotation of the drive gear 51 drives the drive rotating plate 34 to rotate. The drive rotating plate 34 squeezes the clamping arm 33 through the drive slot 341, so that the clamping arm 33 can move toward the axis of the palm fiber, increasing the clamping force generated by the vertical clamping plate 3311 and the horizontal clamping plate 3321 on the palm fiber, and as the palm fiber bends and deforms As the vertical clamping plate 3311 and the horizontal clamping plate 3321 increase, the clamping force on the palm fiber will also increase, thereby 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 needed, it is only necessary to slide the micrometer 413 on the horizontal slide rail 412 to perform multi-point testing; when multi-angle testing is required, after resetting the micrometer 413, rotate the one-way swivel 1 421 and the one-way swivel 2 422 to the same angle at the same time, so that the palm fiber rotates the required angle and then repeat the test process.

[0049] The basic principles, main features, and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the bending elasticity of palm fibers based on multi-angle adjustment; comprising a base (1) and an electronic scale (2); characterized in that: The invention also comprises a clamping device (3), an adjusting device (4) and a loading device (5); the clamping device (3) is arranged above the electronic scale (2); the adjusting device (4) comprises 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); when performing elasticity testing, the loading device (5) performs vertical movement to drive the clamping device (3) to move toward the axis of the palm fiber.

2. The device for testing the bending elasticity of palm fiber based on multi-angle adjustment according to claim 1, characterized in that: The clamping device (3) comprises a mounting seat (31), a clamping seat (32), a clamping arm (33) and a driving rotating plate (34); the mounting seat (31) is connected to the base (1) by a threaded connection, and a directional guide rail (311) is provided on the mounting seat (31); the clamping seat (32) is slidably mounted on the directional guide rail (311), and when performing an elastic test, the clamping seat (32) is located on the electronic scale (2); a rotation groove (321) is provided on the clamping seat (32), and four clamping grooves (322) are provided in a circumferential array on the inner wall of the rotation groove (321); the clamping arm (33) is slidably mounted on the clamping groove (322) and is connected by a spring; a driving groove (341) is provided on the driving rotating plate (34), and the driving rotating plate (34) is connected to the clamping arm (33) through the driving groove (341).

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

4. The device for testing the bending elasticity of palm fiber based on multi-angle adjustment according to claim 3, characterized in that: 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.

5. The device for testing the bending elasticity of palm fiber based on multi-angle adjustment according to claim 2, characterized in that: The point adjustment assembly (41) comprises a mounting frame (411), a horizontal slide rail (412) and a micrometer (413); the mounting frame (411) is arranged on the base (1); the horizontal slide rail (412) is arranged on the mounting frame (411); and the micrometer (413) is slidably mounted on the horizontal slide rail (412).

6. The device for testing the bending elasticity of palm fiber based on multi-angle adjustment according to claim 2, characterized in that: The angle adjustment assembly (42) comprises a one-way swivel (421) and a one-way swivel (422); the one-way swivel (421) and the one-way swivel (422) are respectively mounted on two clamping seats (32), and the one-way swivel (421) and the one-way swivel (422) allow the palm fibers to pass through in the same direction.

7. The device for testing the bending elasticity of palm fiber based on multi-angle adjustment according to claim 5, characterized in that: The loading device (5) comprises a driving gear (51), a telescopic rod (52), a rack groove (53), a driving rack (54) and a loading hook (55); the driving gear (51) is connected to the driving rotating plate (34); the telescopic rod (52) is connected to the micrometer (413); the rack groove (53) is provided on the clamping seat (32); the driving rack (54) is connected to the telescopic rod (52), and the driving rack (54) is slidably installed in the rack groove (53); and the loading hook (55) is connected to the telescopic rod (52).

8. The device for testing the bending elasticity of palm fiber based on multi-angle adjustment according to claim 7, characterized in that: The telescopic rod (52) comprises an annular sleeve body (521), a fixed inner rod (522) and a telescopic outer rod (523); the annular sleeve body (521) is sleeved on the micrometer (413); the fixed inner rod (522) is connected to the annular sleeve body (521); one end of the telescopic outer rod (523) is slidably mounted in the fixed inner rod (522), and the other end is connected to the driving rack (54).

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