Performance detection equipment for fiber composite material plate

Abstract

The utility model discloses performance detection equipment for a fiber composite material plate, which relates to the technical field of performance detection of the fiber composite material plate and comprises a detection table, a top frame is fixedly arranged at the upper end of the detection table, an air cylinder is arranged at the upper end of the top frame, a top plate is arranged at the output end of the air cylinder, and an extrusion roller is arranged at the lower end of the top plate. The bottom of the detection table is in threaded connection with a first screw rod, the upper end of the first screw rod is fixedly provided with a connecting frame, the upper end of the connecting frame is provided with a plurality of alarms, and the upper ends of the plurality of alarms are in close contact with the same elastic plate. The distance between the elastic plate and the material plate is adjusted to meet the bending resistance detection requirements of the material plates of different materials and lengths, and the maximum allowable deflection of the material plate is limited by presetting the top end position of the elastic plate, so that the plate of which the deflection deformation exceeds the limit is quickly screened out, and the detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of performance testing technology for fiber composite panels, and specifically to a performance testing device for fiber composite panels. Background Technology

[0002] As an important type of fiber composite material product, the bending resistance of fiber composite panels directly affects the quality, safety, and service life of related products. Accurately assessing the bending resistance of fiber composite panels is of paramount importance for optimizing product design, ensuring product quality, and promoting technological advancement in the industry. In practical applications, insufficient bending resistance of fiber composite panels can lead to serious problems such as deformation, cracking, or even breakage when subjected to bending loads, resulting in safety accidents and causing significant economic losses and personal injury.

[0003] Currently, the bending performance testing of fiber composite panels typically employs a monitoring scheme combining symmetrically arranged metal contact plates and pressure sensors. This design automatically triggers an alarm device based on the pressure signal generated when the two metal contact plates come into contact, promptly alerting operators that the material has reached the preset bending limit. This effectively avoids the drawbacks of traditional testing methods that require continuous manual observation, significantly reducing the workload of testing personnel. However, in practical engineering applications, it has been found that the fixed spacing between the metal contact plates and the test material panel presents significant challenges. Fiber composite panels of different materials (such as carbon fiber, glass fiber, or aramid fiber reinforced composites) and different dimensions (such as aspect ratio and thickness differences) exhibit significant variations in mechanical properties, with their maximum allowable bending deformation often differing by several times. This rigid spacing structure cannot adaptively adjust according to the specific characteristics of the sample. Consequently, when facing diverse material systems, the testing system either fails to trigger the alarm in time due to excessive spacing or affects normal bending deformation due to insufficient spacing, severely limiting the universality and accuracy of the testing method.

[0004] Therefore, existing equipment is insufficient to meet the growing demand for diversified and high-precision bending performance testing in the composite materials industry, and there is an urgent need to develop a bending performance testing device for fiber composite panels with adjustable spacing. Utility Model Content

[0005] The purpose of this invention is to provide a performance testing device for fiber composite panels, addressing the following technical problem: In practical engineering applications, it has been found that the fixed spacing between the metal contact plate and the test material panel results in significant differences in mechanical properties between fiber composite panels of different materials (such as carbon fiber, glass fiber, or aramid fiber reinforced composites) and different dimensions (such as aspect ratio and thickness differences). Their maximum allowable bending deformation often differs by several times. This rigid spacing structure cannot adaptively adjust according to the specific characteristics of the sample, causing the testing system to either fail to trigger an alarm in time due to excessive spacing or affect normal bending deformation when facing diverse material systems. This severely restricts the universality and accuracy of the testing method.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A performance testing device for fiber composite panels includes a testing platform. A top frame is fixedly installed at the upper end of the testing platform, and a bending resistance testing component is installed at the upper end of the top frame. The bending resistance testing component is used to test the bending resistance of the fiber composite panels. An overload identification component is provided in the middle of the testing platform. The overload identification component includes a first screw threaded to the bottom of the testing platform. A connecting frame is fixedly installed at the upper end of the first screw. Multiple alarms are provided at the upper end of the connecting frame, and the upper ends of the multiple alarms are in close contact with the same elastic plate.

[0008] As a further embodiment of this utility model: the inner sidewall of the top frame is symmetrically provided with sliding grooves, and a first slider is slidably arranged in the two sliding grooves, and one side of the first slider is fixedly connected to the connecting frame.

[0009] As a further embodiment of this utility model: the inner side of the top frame is provided with a scale line on one side of the slide groove.

[0010] As a further embodiment of this utility model: the bending resistance detection component includes a cylinder fixedly mounted on the upper end of the top frame, a top plate is provided at the output end of the cylinder, a squeezing roller is provided at the lower end of the top plate, and a limit component is provided at the upper end of the top plate.

[0011] As a further embodiment of this utility model: the limiting component includes a plurality of limiting rods fixedly disposed on the upper end of the top plate, and the upper end of the plurality of limiting rods is provided with a limiting ring.

[0012] As a further embodiment of this utility model: the two ends of the testing platform are symmetrically provided with fixed clamping units, the fixed clamping unit includes a second slider that is slidably disposed in the middle of the testing platform, a fixed rod is fixedly disposed at the upper end of the second slider, a slot is opened in the middle of the fixed rod, and a locking component is disposed at the upper end of the fixed rod, the locking component is used to limit and fix the fiber composite material.

[0013] As a further embodiment of this utility model: through holes are symmetrically opened at both ends of the testing platform, and support rods are slidably arranged inside the through holes, with the upper ends of the two support rods fixedly connected to the bottom of the fixing rod.

[0014] As a further embodiment of this utility model: the locking assembly includes multiple threaded holes at the upper end of the fixing rod, a locking bolt is threaded into the threaded hole, and a fixing disc is rotatably connected to the lower end of the locking bolt.

[0015] The beneficial effects of this utility model are:

[0016] (1) This utility model uses the first screw to drive the connecting frame to rise, which drives the elastic plate to move synchronously, so as to adjust the distance between the elastic plate and the fiber composite material plate, adapting to the bending resistance test requirements of plates of different materials and lengths; the scale line is used to set the top position of the elastic plate to limit the maximum allowable deflection of the plate; during the test, the cylinder drives the squeezing roller at the bottom of the top plate to apply a concentrated load to the plate, and the alarm triggering state quickly screens out samples with excessive deflection deformation, thereby improving the test efficiency;

[0017] (2) This utility model uses a servo motor to drive the lead screw to rotate, which drives the threaded slider to reciprocate, thereby adjusting the distance between the fixed rod and the fiber composite material plate to meet the clamping requirements of fiber composite material plates of different lengths; the locking bolt drives the fixed plate to press down the plate to ensure that warping does not occur during the testing process, thereby improving the equipment adaptability and testing reliability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 This is a top view of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the overload identification component of this utility model;

[0023] Figure 5 This is a structural schematic diagram of the locking component of this utility model.

[0024] In the diagram: 1. Testing table; 2. Top frame; 3. Bending test assembly; 31. Cylinder; 32. Top plate; 33. Extrusion roller; 34. Limiting assembly; 341. Limiting rod; 342. Limiting ring; 4. Overload identification assembly; 41. First screw; 42. Connecting frame; 43. Alarm; 44. Elastic plate; 45. Slide groove; 46. First slider; 47. Scale line; 5. Fixed clamping unit; 51. Second slider; 52. Fixed rod; 53. Slot; 54. Through hole; 55. Support rod; 6. Locking assembly; 61. Threaded hole; 62. Locking bolt; 63. Fixed plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Implementation Case 1: Please refer to Figure 1-4 As shown, this utility model is a performance testing device for fiber composite panels, including a testing platform 1. A top frame 2 is fixedly installed on the upper end of the testing platform 1. A bending resistance testing component 3 is installed on the upper end of the top frame 2. The bending resistance testing component 3 is used to test the bending resistance of fiber composite panels of different materials and sizes. An overload identification component 4 is provided in the middle of the testing platform 1. The overload identification component 4 is used to quickly identify and screen fiber composite panels whose deflection exceeds the limit value and does not meet the requirements during the bending resistance testing process. The overload identification component 4 includes a first screw 41 threaded to the bottom of the testing platform 1. The first screw 41 passes through the testing platform 1 and a connecting frame 42 is fixedly installed on its upper end. Multiple alarms 43 are provided on the upper end of the connecting frame 42. In this embodiment, there are 3 alarms 43. The upper ends of the multiple alarms 43 are closely contacted with the same elastic plate 44. The two ends of the elastic plate 44 are fixedly connected to the connecting frame 42.

[0027] The inner sidewall of the top frame 2 is symmetrically provided with sliding grooves 45. A first slider 46 is slidably disposed in the two sliding grooves 45. The side of the first slider 46 away from the top frame 2 is fixedly connected to the connecting frame 42. The connecting frame 42 drives the first slider 46 to slide in the sliding grooves 45, which is used to limit the lateral displacement of the connecting frame 42, thereby making the bending test value more accurate and improving the test accuracy.

[0028] The inner side of the top frame 2 is provided with a scale line 47 on one side of the slide groove 45. The scale line 47 is used to quickly and accurately adjust the height of the upper end face of the elastic plate 44 to meet the bending resistance test requirements of fiber composite material plates of different sizes and materials. The deflection (bending deformation) of fiber composite material plates is usually significantly different due to the different lengths and materials. The deflection mainly depends on factors such as the stiffness (bending modulus), length, width, fiber layup method, matrix material properties, and interface bonding strength of the material.

[0029] The bending resistance testing component 3 includes a cylinder 31 fixedly mounted on the upper end of the top frame 2. A top plate 32 is provided at the output end of the cylinder 31, and a pressing roller 33 is provided at the lower end of the top plate 32. The cylinder 31 drives the pressing roller 33 to apply a concentrated load to the fiber composite material board to be tested, thereby evaluating and judging the bending resistance of the fiber composite material board. A limit component 34 is provided at the upper end of the top plate 32. The limit component 34 is used to limit the horizontal lateral movement of the top plate 32 to avoid the pressing roller 33 from deviating, which would result in uneven application of the concentrated load, eccentric load, and reduced bending resistance testing accuracy.

[0030] The limiting component 34 includes a plurality of limiting rods 341 fixedly installed on the upper end of the top plate 32. The plurality of limiting rods 341 penetrate the top plate 32 to the upper end where a limiting ring 342 is provided. The limiting rods 341 are rotatably connected to the top plate 32 through bearings.

[0031] In summary, during testing, the fiber composite board performance testing equipment uses the first screw 41 to drive the connecting frame 42 upwards, causing the elastic plate 44 to rise synchronously. The top position of the elastic plate 44 is precisely controlled by the scale line 47. The bending resistance testing component 3 applies a concentrated load to the sample to test its bending resistance. When the fiber composite board undergoes flexural deformation under load, samples of different materials and lengths will exhibit different deflection characteristics. By presetting the top position of the elastic plate 44, the maximum allowable deflection of the fiber composite board can be limited. If the alarm 43 is not triggered during the test, it indicates that the bending resistance of the sample meets the standard requirements; conversely, if the alarm 43 sounds, it indicates that the flexural deformation of the fiber composite board has exceeded the allowable range, and the bending resistance does not meet the standard.

[0032] Example 2: Based on Example 1, please refer to... Figure 1 , Figure 5As shown, fixed clamping units 5 are symmetrically arranged at both ends of the testing table 1. Each fixed clamping unit 5 includes a second slider 51 that is slidably disposed inside a sliding groove in the middle of the testing table 1. The second slider 51 is driven to reciprocate by a servo motor drive screw disposed on the side of the testing table 1. A fixed rod 52 is fixedly disposed at the upper end of the second slider 51. A slot 53 is provided in the middle of the fixed rod 52. A locking component 6 is disposed at the upper end of the fixed rod 52. The locking component 6 is used to limit and fix the fiber composite material board.

[0033] The testing platform 1 has through holes 54 symmetrically opened at both ends. Support rods 55 are slidably arranged inside the through holes 54. The upper ends of the two support rods 55 are fixedly connected to the bottom of the fixing rod 52.

[0034] The locking assembly 6 includes multiple threaded holes 61 at the upper end of the fixing rod 52. Locking bolts 62 are internally threaded into the threaded holes 61. The locking bolts 62 pass through the fixing rod 52 and are rotatably mounted on a fixing plate 63 inside the slot 53 via a bearing.

[0035] In summary, during the testing process, the servo motor drives the lead screw to rotate, which in turn drives the second slider 51, which is threaded to it, to reciprocate. The second slider 51 is linked by the fixed rod 52. By adjusting the distance between the two fixed rods 52, the clamping requirements of fiber composite material plates of different lengths can be met. The locking bolt 62 presses down on the fixed plate 63 to achieve the fastening of the fiber composite material plate clamped in the slot 53 of the fixed rod 52, thus preventing the material plate from warping during the bending test.

[0036] Example 3

[0037] This embodiment is obtained by combining Embodiment 1 and Embodiment 2.

[0038] By dynamically adjusting the distance between the elastic plate 44, the alarm 43, and the fiber composite material plate, as well as the distance between the two fixed rods 52, this system can adapt to the bending resistance testing requirements of different materials and specifications of plates, and can quickly identify samples with excessive deformation based on the trigger signal of the alarm 43, thereby significantly improving testing efficiency and screening accuracy.

[0039] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A performance testing device for fiber composite panels, comprising a testing table (1), characterized in that, The upper end of the testing platform (1) is fixedly provided with a top frame (2), and the upper end of the top frame (2) is equipped with a bending resistance testing component (3). The bending resistance testing component (3) is used to test the bending resistance of the fiber composite board. The middle part of the testing platform (1) is provided with an overload identification component (4). The overload identification component (4) includes a first screw (41) threadedly connected to the bottom of the testing platform (1). The upper end of the first screw (41) is fixedly provided with a connecting frame (42). The upper end of the connecting frame (42) is provided with multiple alarms (43). The upper ends of the multiple alarms (43) are closely contacted with the same elastic plate (44).

2. The performance testing equipment for fiber composite panels according to claim 1, characterized in that, The inner sidewall of the top frame (2) is symmetrically provided with sliding grooves (45), and a first slider (46) is slidably arranged in the two sliding grooves (45). One side of the first slider (46) is fixedly connected to the connecting frame (42).

3. The performance testing equipment for fiber composite panels according to claim 1, characterized in that, The inner side of the top frame (2) is provided with a scale line (47) on one side of the slide groove (45).

4. The performance testing equipment for fiber composite material boards according to claim 1, characterized in that, The bending resistance testing component (3) includes a cylinder (31) fixedly mounted on the upper end of the top frame (2). The output end of the cylinder (31) is provided with a top plate (32). The lower end of the top plate (32) is provided with a squeezing roller (33). The upper end of the top plate (32) is provided with a limit component (34).

5. The performance testing equipment for fiber composite panels according to claim 4, characterized in that, The limiting component (34) includes a plurality of limiting rods (341) fixedly disposed on the upper end of the top plate (32), and a limiting ring (342) is provided at the upper end of the plurality of limiting rods (341).

6. The performance testing equipment for fiber composite panels according to claim 1, characterized in that, The testing platform (1) is symmetrically provided with fixed clamping units (5) at both ends. The fixed clamping unit (5) includes a second slider (51) slidably disposed in the middle of the testing platform (1). A fixed rod (52) is fixedly disposed at the upper end of the second slider (51). A slot (53) is opened in the middle of the fixed rod (52). A locking component (6) is disposed at the upper end of the fixed rod (52). The locking component (6) is used to limit and fix the fiber composite material.

7. The performance testing equipment for fiber composite panels according to claim 1, characterized in that, The testing platform (1) has through holes (54) symmetrically opened at both ends. Support rods (55) are slidably arranged inside the through holes (54). The upper ends of the two support rods (55) are fixedly connected to the bottom of the fixing rod (52).

8. The performance testing equipment for fiber composite material boards according to claim 6, characterized in that, The locking assembly (6) includes multiple threaded holes (61) at the upper end of the fixing rod (52), with locking bolts (62) threadedly connected to the threaded holes (61), and a fixing plate (63) rotatably connected to the lower end of the locking bolts (62).

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