A composite board compression performance testing device

Abstract

This application discloses a composite sheet compression performance testing device, relating to the field of mechanical performance testing technology. It includes a testing mechanism, a fixing fixture, and an installation mechanism. The fixing fixture is detachably mounted within the installation mechanism. The testing mechanism includes a frame, a pressure beam, a pressure assembly, a base, a housing, and a hydraulic drive component. The base is mounted on the frame, and the housing is slidably mounted on the base. A test chamber with a top opening is formed inside the housing. The fixing fixture is installed into the housing through the top opening of the test chamber. The hydraulic drive component is located inside the housing and is used to push the fixing fixture to clamp the sample plate. The pressure assembly is located at the bottom of the pressure beam and abuts against the fixing fixture. The housing of this application adopts a fully enclosed design. When the hydraulic drive component applies a large thrust, the fully enclosed housing can evenly distribute the thrust, thereby improving the stability during testing and resulting in higher accuracy of the performance test.

Description

Technical Field

[0001] This application relates to the field of mechanical property testing technology, and in particular to a device for testing the compressive properties of composite plates. Background Technology

[0002] Composite panels are a new type of material made by combining multiple different materials through a special process. They combine the advantages of each component material, such as high strength, lightweight, and corrosion resistance. Their compressive performance is often tested according to international standards such as ASTM D6641. A rigid clamp is used to fix both ends of the specimen, an axial load is applied, and the load and deformation are monitored to evaluate key indicators such as compressive strength and elastic modulus. Due to their excellent properties, composite panels are widely used in aerospace, automotive manufacturing, and construction engineering.

[0003] Currently, referring to patent document CN120333977A, the test device's fixing base has a U-shaped cross-section. The sample plate is placed into the fixing clamp through the opening of the U-shaped fixing base. A hydraulic pump inside the fixing base pushes the fixing clamp to hold the sample plate. Subsequently, a pressure-applying component applies pressure to the fixing clamp, thereby performing performance testing on the sample plate. The stability of the fixing clamp's grip on the sample plate is a core prerequisite for ensuring the accuracy of the sample plate's compression performance test results. To ensure that the fixing clamp can form a sufficiently stable grip on the sample plate, the hydraulic pump needs to apply a large thrust to the fixing clamp to ensure that the sample plate does not shift or loosen during the axial load test.

[0004] However, to facilitate the placement of the sample plate, the U-shaped fixing seat used in traditional fixtures has an inherent structural feature: one side is open. This open design can cause the fixing seat to deform slightly when a large thrust is applied by the hydraulic pump. This deformation directly reduces the stability of the testing device throughout the testing process, causing the stress state of the sample plate to deviate from the preset ideal conditions, ultimately significantly affecting the accuracy of the composite plate compression performance test. Summary of the Invention

[0005] To improve the accuracy of composite board testing, this application provides a composite board compression performance testing device.

[0006] The composite board compression performance testing device provided in this application adopts the following technical solution:

[0007] A composite sheet compression performance testing device includes a testing mechanism, a fixing fixture, and an installation mechanism. The fixing fixture is detachably disposed within the installation mechanism, which is used to install a sample plate within the fixing fixture. The testing mechanism includes a frame, a pressure beam, a pressure assembly, a base, a housing, and a hydraulic drive component. The base is disposed on the frame, and the housing is slidably disposed on the base. A testing cavity with a top opening is formed inside the housing. The fixing fixture is installed into the housing through the top opening of the testing cavity. The hydraulic drive component is disposed within the housing and is used to push the fixing fixture to clamp the sample plate. The pressure assembly is disposed at the bottom of the pressure beam and abuts against the fixing fixture.

[0008] By adopting the above technical solution, when testing the compressive performance of composite panels, the sample plate is first installed into the fixing fixture using an installation mechanism. Then, the fixing fixture is removed from the installation mechanism. Next, the outer shell is slid along the base, causing the top of the outer shell to be misaligned with the pressure beam. The fixing fixture is then installed into the outer shell through the top opening of the test chamber. A hydraulic drive applies a thrust to the fixing fixture, pushing the outer shell to slide back to its original position. Finally, the pressure beam applies an axial load to the sample plate through the pressure assembly, thus performing the compressive performance test on the composite panel. This setup, with its fully enclosed design, allows the hydraulic drive to apply a large thrust, which is evenly distributed within the fully enclosed shell, improving test stability and increasing the accuracy of the performance test.

[0009] Preferably, the fixing fixture includes four toothed blocks, a first slider, and a plurality of locking members. Each pair of toothed blocks is clamped at one end of the sample plate. The four first sliders are fixedly disposed on the side wall of the four toothed blocks away from the sample plate. The locking members are disposed on the toothed blocks and are used to fix two opposing toothed blocks.

[0010] By adopting the above technical solution, the first slider facilitates the installation and disassembly of the fixing fixture, the four toothed blocks clamp the two ends of the sample plate, and the locking component fixes the toothed blocks so that the sample plate can still be clamped when the toothed blocks are removed from the installation mechanism.

[0011] Preferably, the installation mechanism includes a top plate, a bottom plate, a pressure plate, a guide column, a lifting drive component, a positioning guide rail, and a positioning block. The two ends of the guide column are respectively connected to the top plate and the bottom plate. The pressure plate is slidably mounted on the guide column. The lifting drive component is mounted on the top plate and is used to drive the pressure plate to move. Positioning guide rails are provided on the side walls of the pressure plate and the bottom plate that are close to each other. The first slider is slidably mounted on the positioning guide rail. The positioning block is mounted on the toothed block and is used to position the sample plate.

[0012] By adopting the above technical solution, when installing the sample plate, firstly, two first sliders are slidably installed on the positioning guide rail of the base plate, the sample plate is placed on the two toothed blocks, and then the positioning block is placed on the toothed blocks. The positioning block positions the sample plate so that the sample plate is located in the middle of the toothed blocks. Then, the other two first sliders are installed on the positioning guide rail of the pressure plate. The lifting drive component drives the two toothed blocks to move downward through the pressure plate. Under the guidance of the positioning block, the four toothed blocks clamp the two ends of the sample plate. Then, the locking component is used to fix the toothed blocks, and the fixing fixture can be slidably removed from the installation mechanism.

[0013] Preferably, a fixing block is slidably disposed inside the outer shell, the driving end of the hydraulic drive abuts against the fixing block, and a first guide rail is provided on the side wall of the fixing block away from the hydraulic drive and on the inner wall of the outer shell, and the first slider is slidably disposed on the first guide rail.

[0014] By adopting the above technical solution, after the fixing fixture is taken out from the installation mechanism, the first slider is slidably installed on the first guide rail, so that the toothed block can drive the sample plate to slide into the outer shell. The hydraulic drive component then pushes the first guide rail through the fixing block to squeeze the toothed block, thereby clamping the sample plate.

[0015] Preferably, a first mounting base is fixedly disposed on the inner wall of the outer casing, a lever is rotatably disposed on the first mounting base, a second mounting base is fixedly disposed on the side wall of the fixed block near the hydraulic drive component, the middle part of the lever is connected to the second mounting base, and a lever is disposed at the end of the lever, the lever being located outside the outer casing.

[0016] By adopting the above technical solution, during the process of installing the fixing clamp into the housing, the lever drives the lever to rotate on the first mounting seat. The lever drives the fixing block to slide inside the housing through the second mounting seat. The fixing block drives the first guide rail to slide and adjust its position, thereby facilitating the sliding installation of the first slider on the first guide rail.

[0017] Preferably, the pressurizing assembly includes an upper mold handle, a pressure ball, a top block, a connector, and a first elastic element. The upper mold handle is connected to the pressurizing beam. The first elastic element is disposed on the upper mold handle. The connector is disposed on the first elastic element. The connector passes through the upper mold handle and is fixedly connected to the top block. The pressure ball is disposed between the upper mold handle and the top block, and the bottom end of the top block away from the upper mold handle abuts against the toothed block.

[0018] By adopting the above technical solution, the pressure beam drives the upper mold handle to move, and the upper mold handle transmits the load to the top block through the pressure ball. The top block then applies pressure to the toothed block, thereby testing the sample plate. The top block is floatingly mounted on the upper mold handle through the connecting piece and the first elastic element. In addition, the pressure ball can automatically correct the load direction, thus making the load applied by the top block more accurate.

[0019] Preferably, an upper sleeve is fixedly provided on the bottom wall of the pressure beam, the upper mold handle is inserted into the upper sleeve, the upper mold handle and the upper sleeve are connected by a pin, and an upper locking ring is threaded on the upper mold handle, with the top wall of the upper locking ring abutting against the bottom wall of the upper sleeve.

[0020] By adopting the above technical solution, the top of the upper mold handle is first inserted into the upper sleeve, then the upper sleeve and the upper mold handle are connected by a pin, and finally the upper locking ring on the upper mold handle is rotated. The top of the upper locking ring abuts against the bottom of the upper sleeve, thereby firmly fixing the upper mold handle to the bottom of the pressure beam.

[0021] Preferably, a second guide rail is provided on the base, a second slider is provided on the bottom wall of the outer shell, the second slider is slidably disposed on the second guide rail, and limit blocks are provided at both ends of the base along the length direction of the second guide rail.

[0022] By adopting the above technical solution, the outer shell slides on the second guide rail via the second slider, and can then slide on the base. The limiting block limits the sliding of the outer shell, so that the outer shell will not slip off the base.

[0023] Preferably, the locking component includes a locking rod and a locking sleeve. The locking rod is rotatably disposed in a toothed block on both sides of the sample plate, and the locking sleeve is fixedly disposed on another toothed block. The locking rod is slidably inserted into the locking sleeve. A locking block is fixedly disposed on the outer side wall of the locking rod. A sliding groove is obliquely formed on the inner wall of the locking sleeve. A locking groove is formed at the bottom of the sliding groove of the locking sleeve. A second elastic element is disposed in the toothed block for driving the locking rod to rotate and reset and for locking the locking block to be locked in the locking groove.

[0024] By adopting the above technical solution, when the two toothed blocks clamp the sample plate, one toothed block drives the locking rod to slide into the locking sleeve. The locking rod drives the locking block to slide in the groove. The groove drives the locking rod to rotate through the locking block. The locking rod drives the second elastic element to deform. When the two toothed blocks finish clamping the sample plate, the locking block moves to the bottom of the groove. The second elastic element drives the locking block to slide and lock in the locking groove through the locking rod, thereby automatically locking the two toothed blocks.

[0025] Preferably, a lifting plate is slidably mounted on the frame, and the mounting mechanism is rotatably mounted on the lifting plate. A docking groove is provided at the top of the first guide rail, and a docking block is slidably mounted at the end of the positioning guide rail. A third elastic element is provided inside the positioning guide rail to abut the end of the docking block. The docking block is slidably inserted into the docking groove. Two stops are symmetrically slidably mounted inside the positioning guide rail, and a fourth elastic element is connected between the two stops. Push grooves are provided on the opposite side walls of the docking block, and the ends of the two stops that are close to each other are slidably mounted in the two push grooves respectively.

[0026] By adopting the above technical solution, after the toothed block clamps the sample plate in the installation mechanism, the installation mechanism is rotated from the horizontal direction to the vertical direction. At this time, the positioning guide rail is located above the first guide rail, and the two stops extend from the positioning guide rail and block the fixing fixture, preventing the fixing fixture from descending. Subsequently, the lifting plate drives the installation mechanism to descend, and the positioning guide rail drives the docking block to slide into the docking groove of the first guide rail. When the end of the docking block abuts the bottom of the docking groove, the docking of the first guide rail and the positioning guide rail is completed. The positioning guide rail continues to descend, and at this time, the docking block slides upward in the positioning guide rail and presses the third elastic element. The fourth elastic element pulls the two stops to slide in the push groove, so that the two stops slide into the positioning guide rail and release the obstruction of the fixing fixture. The first slider slides from the positioning guide rail to the first guide rail, and the fixing fixture is automatically installed into the testing mechanism.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When testing the compressive properties of composite panels using a testing mechanism, a fixing fixture, and an installation mechanism, the sample plate is first installed into the fixing fixture using the installation mechanism, and then the fixing fixture is removed from the installation mechanism. Subsequently, the outer shell is slid on the base so that the top of the outer shell is misaligned with the pressure beam. The fixing fixture is then installed into the outer shell through the top opening of the testing chamber. The hydraulic drive applies a thrust to the fixing fixture, and then pushes the outer shell to slide back to its original position. Finally, the pressure beam applies an axial load to the sample plate through the pressure assembly, thereby testing the compressive properties of the composite panels. The outer shell adopts a fully enclosed design. When the hydraulic drive applies a large thrust, the fully enclosed outer shell can evenly distribute the thrust, thereby improving the stability during the test and making the performance test more accurate.

[0029] 2. With the help of the fixing block, after the fixing fixture is taken out from the installation mechanism, the first slider is slidably installed on the first guide rail, so that the toothed block can drive the sample plate to slide into the outer shell. The hydraulic drive component then pushes the first guide rail through the fixing block to squeeze the toothed block, thereby clamping the sample plate.

[0030] 3. During the installation of the fixing fixture into the housing using the lever, the lever drives the lever to rotate on the first mounting base. The lever drives the fixing block to slide inside the housing through the second mounting base. The fixing block drives the first guide rail to slide and adjust its position, thereby facilitating the sliding installation of the first slider on the first guide rail. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the composite board compression performance testing equipment in Embodiment 1 of this application;

[0032] Figure 2This is a partial exploded view of the composite plate compression performance testing equipment in Embodiment 1 of this application, to highlight the fixing fixture and mounting mechanism;

[0033] Figure 3 This is a partial exploded view of the composite plate compression performance testing equipment in Embodiment 1 of this application, with the outer shell highlighted.

[0034] Figure 4 This is a partially exploded cross-sectional view of the composite plate compression performance testing equipment in Embodiment 1 of this application, to highlight the pressurization components;

[0035] Figure 5 This is a partial exploded cross-sectional view of the composite plate compression performance testing equipment in Embodiment 1 of this application, to highlight the paddle;

[0036] Figure 6 This is a partial structural schematic diagram of the composite board compression performance testing equipment in Embodiment 1 of this application, to highlight the state of the outer shell being pulled out;

[0037] Figure 7 This is a partial structural schematic diagram of the composite plate compression performance testing equipment in Embodiment 2 of this application, to highlight the fixing fixture;

[0038] Figure 8 This is a partial exploded view of the composite plate compression performance testing equipment in Embodiment 2 of this application, highlighting the locking components;

[0039] Figure 9 This is a partial structural schematic diagram of the composite plate compression performance testing equipment in Embodiment 3 of this application, to highlight the testing mechanism and the installation mechanism;

[0040] Figure 10 For this application Figure 9 Enlarged view of point A in the middle;

[0041] Figure 11 This is a partial structural cross-sectional view of the composite plate compression performance testing equipment in Embodiment 3 of this application, highlighting the connecting block;

[0042] Figure 12 This is a partial exploded view of the composite plate compression performance testing equipment in Embodiment 3 of this application, highlighting the docking block.

[0043] Reference numerals: 10. Testing mechanism; 101. Frame; 102. Pressure beam; 103. Pressure assembly; 1031. Upper mold handle; 1032. Pressure ball; 1033. Top block; 1034. Connector; 1035. First elastic element; 104. Base; 105. Housing; 106. Hydraulic drive element; 20. Fixing clamp; 201. Tooth block; 202. First slider; 203. Locking element; 2031. Locking rod; 2032. Locking sleeve; 30. Mounting mechanism; 301. Top plate; 302. Bottom plate; 303. Pressure plate; 304. Guide column; 305. Lifting drive element; 306. Positioning guide rail; 307. Positioning block; 11. Testing chamber; 12. Fixing block; 13. First guide rail; 14. First mounting base; 1 5. Paddle; 16. Second mounting base; 17. Paddle lever; 18. Upper sleeve; 19. Upper locking ring; 21. Second guide rail; 22. Second slider; 23. Locking block; 24. Slide groove; 25. Locking groove; 26. Second elastic element; 27. Limiting block; 28. Lifting plate; 29. ​​Connecting groove; 31. Connecting block; 32. Third elastic element; 33. Stop block; 34. Fourth elastic element; 35. Push groove; 36. Sliding sleeve; 38. Positioning groove; 39. Lower sleeve; 40. Lower mold handle; 41. Lower locking ring; 42. Handle; 43. Third guide rail; 44. Third slider; 45. Floating gap; 46. Pad block; 47. Gear; 48. Rack; 49. Unlocking rod; 50. Rotating plate; 51. Chamfer; 52. Sample plate; 53. Synchronizing rod. Detailed Implementation

[0044] The following is in conjunction with the appendix Figures 1-12 This application will be described in further detail.

[0045] This application discloses a composite material compression performance testing device.

[0046] Example 1:

[0047] Reference Figure 1 A composite sheet compression performance testing device includes a testing mechanism 10, a fixing clamp 20 and an installation mechanism 30. The testing mechanism 10 and the installation mechanism 30 are set separately. The fixing clamp 20 is used to clamp the sample plate 52 and can be detachably installed in the testing mechanism 10 and the installation mechanism 30.

[0048] Reference Figure 2The fixing fixture 20 includes four toothed blocks 201, first sliders 202, and eight locking elements 203. The four toothed blocks 201 are divided into two groups, with two toothed blocks 201 in each group clamping one end of the sample plate 52. Every four locking elements 203 lock one group of toothed blocks 201. In this application, the locking elements 203 can be bolts. The four first sliders 202 are fixedly installed on the side wall of the four toothed blocks 201 away from the sample plate 52, and the first sliders 202 provide convenience for the installation and removal of the fixing fixture 20.

[0049] The mounting mechanism 30 includes a top plate 301, a bottom plate 302, a pressure plate 303, a lifting drive component 305, two positioning guide rails 306, positioning blocks 307, and four guide pillars 304. The top plate 301 and the bottom plate 302 are fixedly connected to each other at both ends of the four guide pillars 304. Four sliding sleeves 36 are fixedly installed inside the pressure plate 303, and these sleeves slidably fit onto the four guide pillars 304. The two positioning guide rails 306 are fixedly installed on the side walls of the pressure plate 303 and the bottom plate 302, respectively, and the first slider 202 is slidably and detachably installed on the positioning guide rails 306. The two positioning blocks 307 are installed at the ends of the two toothed blocks 201 that are far apart from each other, and each positioning block 307 has a positioning groove 38 for positioning the sample plate 52.

[0050] The lifting drive component 305 is fixedly installed on the top plate 301. In this application, the lifting drive component 305 can be a servo motor. The drive end of the lifting drive component 305 is equipped with a lead screw, which passes through the top plate 301 and is threadedly connected to the pressure plate 303. The lifting drive component 305 drives the pressure plate 303 to reciprocate between the top plate 301 and the bottom plate 302 via the lead screw.

[0051] Before installing the sample plate 52, first install the two first sliders 202 on the positioning guide rails 306 of the base plate 302. Then, place the sample plate 52 stably on the two toothed blocks 201. Next, place the two positioning blocks 307 at the ends of the two toothed blocks 201 that are far apart from each other. The positioning grooves 38 of the positioning blocks 307 are engaged with the ends of the sample plate 52, so that the center line of the sample plate 52 coincides with the central axis of the toothed block 201 and is stably located in the middle of the toothed block 201.

[0052] After initial positioning is completed, the other two first sliders 202 are installed on the positioning guide rail 306 of the pressure plate 303. The lifting drive 305 is started, and the power is driven by the pressure plate 303 to lower the toothed block 201. The positioning block 307 continues to guide and prevent deviation. Finally, the four toothed blocks 201 stably clamp the two ends of the sample plate 52. Then, the locking component 203 is used to lock the toothed block 201 and remove the two positioning blocks 307. The fixing fixture 20 can then be slid out of the installation mechanism 30 by the first slider 202 and the positioning guide rail 306.

[0053] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 The testing mechanism 10 includes a frame 101, a pressure beam 102, a pressure assembly 103, a base 104, a housing 105, and two hydraulic drive components 106. A lower sleeve 39 is fixedly installed on the frame 101. A lower mold handle 40 is slidably inserted into the lower sleeve 39. The lower mold handle 40 and the lower sleeve 39 are fixedly connected by a pin. A lower locking ring 41 is threaded on the lower mold handle 40. The bottom end of the lower locking ring 41 abuts against the top end of the lower sleeve 39, so that the lower mold handle 40 is firmly installed on the lower sleeve 39.

[0054] The base 104 is fixedly installed on the top of the lower mold shank 40. Multiple second guide rails 21 are fixedly installed on the base 104 at intervals. A second slider 22 is slidably installed on each second guide rail 21. The outer shell 105 is fixedly installed on the multiple second sliders 22. Limiting blocks 27 are fixedly installed at both ends of the base 104 along the moving direction of the outer shell 105. A handle 42 is fixedly installed on the outer shell 105. The handle 42 allows the outer shell 105 to be pulled and moved on the base 104. The limiting blocks 27 limit the movement of the outer shell 105, preventing it from slipping off the base 104.

[0055] A test chamber 11 is formed inside the housing 105, with an opening at the top. Two hydraulic actuators 106 are fixedly installed on one side of the test chamber 11 inside the housing 105. In this application, the hydraulic actuators 106 can be hydraulic cylinders. Two third guide rails 43 are fixedly installed on the inner wall of the housing 105 located in the test chamber 11. Each third guide rail 43 has a third slider 44 that slides horizontally on it. Fixing blocks 12 are fixedly installed on the two third sliders 44, and the driving end of the hydraulic actuator 106 abuts against the fixing block 12.

[0056] First guide rails 13 are fixed to the side wall of the fixing block 12 away from the hydraulic drive component 106 and the inner wall of the outer casing 105, and the first slider 202 is slidably mounted on the first guide rails 13. A first mounting seat 14 is fixedly mounted on the inner wall of the outer casing 105, and a second mounting seat 16 is fixedly mounted on the side wall of the fixing block 12 near the hydraulic drive component 106. A lever 15 is rotatably mounted on the first mounting seat 14, and a waist-shaped groove is formed in the middle of the lever 15. A bearing is rotatably mounted in the second mounting seat 16, and the bearing slides in the waist-shaped groove. A lever 17 is fixedly mounted on the end of the lever 17 away from the first mounting seat 14, and the lever 17 is located outside the outer casing 105.

[0057] Once the sample plate 52 is clamped and fixed, and the fixing fixture 20 is removed from the mounting mechanism 30, pull the outer casing 105 outward to slide (refer to...). Figure 6The fixing clamp 20 is placed into the housing 105 through the opening at the top of the test chamber 11. The lever 17 drives the lever 15 to rotate on the first mounting base 14. The lever 17 drives the fixing block 12 to slide inside the housing 105 through the second mounting base 16. The fixing block 12 drives the first guide rail 13 to slide and adjust its position, so that the first slider 202 can be slidably installed on the first guide rail 13, thereby causing the toothed block 201 to drive the sample plate 52 into the housing 105.

[0058] Subsequently, the hydraulic drive 106 pushes the first guide rail 13 through the fixing block 12 to compress the toothed block 201, thereby clamping the sample plate 52, and then pushing the outer shell 105 to move and reset. The outer shell 105 adopts a fully enclosed design. When the hydraulic drive 106 applies a large thrust, the fully enclosed outer shell 105 can evenly distribute the thrust, thereby improving the stability during testing and making the performance test more accurate.

[0059] The pressurizing assembly 103 includes an upper die handle 1031, a pressure ball 1032, a top block 1033, four connecting parts 1034, and a first elastic element 1035. A pressurizing beam 102 is mounted on the frame 101 and connected to a hydraulic drive component. An upper sleeve 18 is fixedly installed on the bottom wall of the pressurizing beam 102. The top of the upper die handle 1031 is inserted into the upper sleeve 18, and the upper die handle 1031 and the upper sleeve 18 are fixedly connected by a pin. An upper locking ring 19 is threaded onto the upper die handle 1031, and the top of the upper locking ring 19 abuts against the bottom of the upper sleeve 18, thereby firmly fixing the upper die handle 1031 to the bottom of the pressurizing beam 102.

[0060] Four first elastic elements 1035 are installed at the four corners of the upper mold shank 1031. Four connecting elements 1034 are installed inside the four first elastic elements 1035 through gaskets. A top block 1033 is installed at the bottom of the upper mold shank 1031. The four connecting elements 1034 pass through the upper mold shank 1031 and are fixedly connected to the top block 1033. In this application, the connecting elements 1034 can be bolts. A pressure ball 1032 is installed between the upper mold shank 1031 and the top block 1033, and there is a floating gap 45 between the upper mold shank 1031 and the top block 1033.

[0061] A pad 46 is fixedly installed inside the outer casing 105. After the fixing fixture 20 is placed inside the outer casing 105, the two toothed blocks 201 abut against the pad 46. When the outer casing 105 moves and resets to below the pressure beam 102, the hydraulic drive component drives the top block 1033 to move downward through the pressure beam 102, the upper sleeve 18, and the upper mold handle 1031. The top block 1033 contacts the two toothed blocks 201 and applies a load to the sample plate 52.

[0062] To ensure pressurization accuracy, the top block 1033 is floatingly mounted on the upper die handle 1031 via a special connector 1034 and the first elastic element 1035. The pressure ball 1032 can automatically correct the load direction. If there is a coaxiality deviation between the upper die handle 1031 and the top block 1033, the transmission path can be adjusted in real time to ensure that the load acts perpendicularly on the tooth block 201.

[0063] The implementation principle of the composite board compression performance testing device according to this application embodiment is as follows: First, two first sliders 202 are installed on the positioning guide rail 306 of the base plate 302. Then, the sample plate 52 is placed stably on the two toothed blocks 201. Next, two positioning blocks 307 are placed at the ends of the two toothed blocks 201 that are far apart from each other. The positioning groove 38 of the positioning block 307 is engaged with the end of the sample plate 52, so that the center line of the sample plate 52 coincides with the central axis of the toothed block 201 and is stably located in the middle of the toothed block 201. After the initial positioning is completed, two more first sliders 202 are installed on the positioning guide rail 306 of the pressure plate 303. The lifting drive 305 is started, and the power drives the toothed blocks 201 to descend through the pressure plate 303. The four toothed blocks 201 stably clamp the two ends of the sample plate 52. Then, the locking member 203 is used to lock the toothed blocks 201. The fixing fixture 20 can then be slidably removed from the installation mechanism 30 by the first sliders 202 and the positioning guide rail 306. Pull the outer casing 105 outward to slide it, and insert the fixing clamp 20 into the outer casing 105 through the opening at the top of the test chamber 11. Use the lever 17 to drive the lever 15 to rotate on the first mounting base 14. The lever 17 drives the fixing block 12 to slide inside the outer casing 105 through the second mounting base 16. The fixing block 12 drives the first guide rail 13 to slide and adjust its position, so that the first slider 202 can slide and be installed on the first guide rail 13, thereby allowing the toothed block 201 to drive the sample plate 52 into the outer casing 105. The hydraulic drive component 106 then pushes the first guide rail 13 through the fixing block 12 to squeeze the toothed block 201, thereby clamping the sample plate 52. Then, push the outer casing 105 to move and reset to below the pressure beam 102. The hydraulic drive component drives the top block 1033 to move downward through the pressure beam 102, the upper sleeve 18, and the upper mold handle 1031. The top block 1033 contacts the two toothed blocks 201 and applies a load to the sample plate 52.

[0064] Example 2:

[0065] Reference Figure 7 and Figure 8The difference between this embodiment and Embodiment 1 is that the locking member 203 includes a locking rod 2031 and a locking sleeve 2032. In a set of toothed blocks 201, the locking rod 2031 is rotatably mounted in one toothed block 201, and the locking sleeve 2032 is fixedly mounted on another toothed block 201, with the locking rod 2031 slidably inserted into the locking sleeve 2032. A second elastic member 26 is installed on the toothed block 201 at the rotation point of the locking rod 2031. In this application, the second elastic member 26 can be a torsion spring, and both ends of the second elastic member 26 are fixedly connected to the toothed block 201 and the locking rod 2031, respectively.

[0066] A locking block 23 is fixedly installed on the outer side wall of the locking rod 2031. A sliding groove 24 is obliquely opened on the inner side wall of the locking sleeve 2032. The top of the sliding groove 24 is open. The locking sleeve 2032 is located at the bottom of the sliding groove 24 and has a locking groove 25 communicating with the sliding groove 24. The locking block 23 is slidably installed in the sliding groove 24 and the locking groove 25.

[0067] Gears 47 are fixedly mounted on the top of the two locking levers 2031, and a rack 48 is slidably mounted inside the first slider 202, meshing with the two gears 47. An unlocking lever 49 is fixedly mounted on each locking lever 2031, and a synchronizing rod 53 is rotatably mounted on the unlocking lever 49 of the two locking levers 2031 with gears 47 mounted. The other end of the synchronizing rod 53 is rotatably connected to the unlocking lever 49 of the locking lever 2031 without gears 47 mounted.

[0068] The implementation principle of Embodiment 2 of this application is as follows: When the installation mechanism 30 clamps the sample plate 52 through the fixing clamp 20, two toothed blocks 201 clamp the sample plate 52. One toothed block 201 drives the locking rod 2031 to slide along a preset trajectory and accurately insert into the locking sleeve 2032 of the other toothed block 201. During the insertion process, the locking rod 2031 drives the locking block 23 to slide directionally within the slide groove 24. The slide groove 24 drives the locking rod 2031 to rotate through the locking block 23, thereby causing the second elastic element 26 to deform and store elastic potential energy. When the toothed block 201 completes the stable clamping of the sample plate 52, the locking block 23 just slides to the bottom of the slide groove 24, triggering the locking action. At this time, the second elastic element 26 releases potential energy, driving the locking rod 2031 to rotate in the opposite direction. Finally, the locking block 23 is locked in the locking groove 25, restricting the movement of the locking rod 2031, realizing the automatic locking of the two toothed blocks 201, and ensuring the stability of the clamping state in subsequent tests. When the test is completed and the toothed block 201 needs to be disassembled, rotate any one of the unlocking rods 49. The unlocking rod 49 drives another locking rod 2031 to rotate synchronously through the synchronizing rod 53. The locking rod 2031 drives another set of locking rods 2031 to rotate through the gear 47 and rack 48. The four locking rods 2031 drive the locking block 23 to rotate into the slide groove 24, so that the locking part 203 can be quickly disassembled.

[0069] Example 3:

[0070] Reference Figure 9 The difference between this embodiment and Embodiment 1 is that the mounting mechanism 30 is mounted on the testing mechanism 10, and a lifting plate 28 is slidably mounted on the frame 101 in the vertical direction. The lifting plate 28 is driven to move up and down by a motor and a lead screw structure inside the testing mechanism 10. A rotating plate 50 is fixedly mounted on one side of the top plate 301 and the bottom plate 302. The rotating plate 50 is rotatably mounted on the lifting plate 28 via a rotating shaft, and the rotating plate 50 is driven to rotate by a motor and a worm gear structure.

[0071] Reference Figure 10 , Figure 11 and Figure 12 Each of the two first guide rails 13 has a mating groove 29 at its top end. A mating block 31 is slidably mounted on one end of each of the two positioning guide rails 306. One end of the mating block 31 is located outside the positioning guide rail 306. A third elastic element 32 is installed inside the positioning guide rail 306. In this application, the third elastic element 32 can be a spring, and it abuts against the end of the mating block 31 located inside the positioning guide rail 306. A chamfer 51 is formed at the end of the mating block 31 to facilitate insertion of the mating block 31 into the mating groove 29.

[0072] Two stops 33 are slidably installed within each positioning guide rail 306 along the moving direction of the vertical docking block 31. Push grooves 35 are formed on the opposite side walls of the docking block 31, with the depth of the push grooves 35 gradually increasing away from the positioning mechanism. Two fourth elastic elements 34 connect the two stops 33. In this application, the two fourth elastic elements 34 can be pull rings, and they pull the ends of the two stops 33 that are close to each other into the push grooves 35.

[0073] The implementation principle of Embodiment 3 of this application is as follows: After the toothed block 201 completes the clamping operation of the sample plate 52 within the mounting mechanism 30, the mounting mechanism 30 is first rotated from a horizontal state to a vertical state via the rotating plate 50. In this state, the positioning guide rail 306 of the mounting mechanism 30 is directly above the first guide rail 13 of the testing mechanism 10, forming a preset docking position relationship. At this time, the ends of the two stops 33 extend out of the positioning guide rail 306, blocking the fixing clamp 20 within the mounting mechanism 30 and preventing the fixing clamp 20 from falling or moving.

[0074] After the adjustment is completed, the lifting plate 28 drives the installation mechanism 30 to descend vertically. During the descent, the positioning guide rail 306 of the installation mechanism 30 simultaneously moves the docking block 31, allowing the docking block 31 to slide precisely and insert into the docking groove 29 of the first guide rail 13. When the end of the docking block 31 fully abuts against the bottom of the docking groove 29, the initial docking operation between the first guide rail 13 and the positioning guide rail 306 is completed.

[0075] As the mounting mechanism 30 continues to descend, the positioning guide rail 306 moves further downward. At this time, the docking block 31 slides vertically upward inside the positioning guide rail 306, simultaneously exerting a squeezing effect on the third elastic element 32, causing the third elastic element 32 to undergo elastic deformation. During this process, the fourth elastic element 34 releases its elastic force, pulling the two stops 33 to slide along the internal trajectory of the push groove 35, causing the two stops 33 to completely retract into the positioning guide rail 306, thereby releasing the obstruction constraint on the fixing fixture 20. After the obstruction is removed, the first slider 202 on the fixing fixture 20 slides along the guide trajectory of the positioning guide rail 306, smoothly transitioning to the first guide rail 13, ultimately realizing the automatic loading of the fixing fixture 20 into the testing mechanism 10.

[0076] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A composite board compression performance testing apparatus, characterized by: The utility model relates to a test device for testing the tensile strength of sample plate, which comprises a test mechanism (10), a fixed clamp (20) and a mounting mechanism (30), wherein the fixed clamp (20) is detachably arranged in the mounting mechanism (30), and the mounting mechanism (30) is used for mounting the sample plate (52) in the fixed clamp (20). The test mechanism (10) comprises a rack (101), a press beam (102), a press assembly (103), a base (104), a shell (105) and a hydraulic drive (106), the base (104) is arranged on the rack (101), the shell (105) is slidably arranged on the base (104), a test cavity (11) with a top opening is formed in the shell (105), the shell (105) adopts a full-enclosing design, the fixed clamp (20) is mounted into the shell (105) from the top opening of the test cavity (11), the hydraulic drive (106) is arranged in the shell (105) and used for clamping the sample plate (52) by the fixed clamp (20), and the press assembly (103) is arranged at the bottom of the press beam (102) and abuts against the fixed clamp (20). The fixed clamp (20) comprises four tooth blocks (201), first sliding blocks (202) and a plurality of locking members (203), every two tooth blocks (201) are clamped at one end of the sample plate (52), four first sliding blocks (202) are fixedly arranged on the side walls of the four tooth blocks (201) away from the sample plate (52), and the locking members (203) are arranged on the tooth blocks (201) and used for fixing the opposite two tooth blocks (201). The mounting mechanism (30) comprises a top plate (301), a bottom plate (302), a pressing plate (303), a guide column (304), a lifting drive (305), a positioning guide rail (306) and a positioning block (307), the two ends of the guide column (304) are connected with the top plate (301) and the bottom plate (302) respectively, the pressing plate (303) is slidably arranged on the guide column (304), the lifting drive (305) is arranged on the top plate (301) and used for driving the pressing plate (303) to move, the positioning guide rails (306) are arranged on the side walls of the pressing plate (303) and the bottom plate (302) which are close to each other, the first sliding blocks (202) slide on the positioning guide rails (306), and the positioning blocks (307) are arranged on the tooth blocks (201) and used for positioning the sample plate (52). A fixed block (12) is slidably arranged in the shell (105), the driving end of the hydraulic drive (106) abuts against the fixed block (12), first guide rails (13) are arranged on the side wall of the fixed block (12) away from the hydraulic drive (106) and the inner wall of the shell (105), and the first sliding blocks (202) slide on the first guide rails (13). The rack (101) is provided with a lifting plate (28) for lifting and sliding, the mounting mechanism (30) is rotationally arranged on the lifting plate (28), the top end of the first guide rail (13) is provided with a butt joint groove (29), the end of the positioning guide rail (306) is slidably provided with a butt joint block (31), the positioning guide rail (306) is provided with a third elastic member (32) abutting the end of the butt joint block (31), the butt joint block (31) is slidably inserted into the butt joint groove (29), and the positioning guide rail (306) is symmetrically provided with two stop blocks (33) slidably arranged therein, and the fourth elastic member (34) is connected between the two stop blocks (33). Push grooves (35) are formed in the opposite two side walls of the butt joint block (31), and the ends of the two stop blocks (33) are slidably arranged in the two push grooves (35), respectively.

2. The composite board compression performance testing device according to claim 1, wherein: The inner wall of the shell (105) is fixedly provided with a first mounting seat (14), the first mounting seat (14) is rotationally provided with a dial piece (15), the side wall of the fixed block (12) close to the hydraulic drive (106) is fixedly provided with a second mounting seat (16), the middle part of the dial piece (15) is connected with the second mounting seat (16), and the end part of the dial piece (15) is provided with a dial rod (17). The dial rod (17) is located outside the shell (105).

3. The composite board compression performance testing device according to claim 1, wherein: The pressing assembly (103) comprises an upper die handle (1031), a pressing ball (1032), a top block (1033), a connecting piece (1034) and a first elastic member (1035). The upper die handle (1031) is connected with the pressing beam (102), the first elastic member (1035) is arranged on the upper die handle (1031), the connecting piece (1034) is arranged on the first elastic member (1035), the connecting piece (1034) penetrates through the upper die handle (1031) and is fixedly connected with the top block (1033), and the pressing ball (1032) is arranged between the upper die handle (1031) and the top block (1033). The bottom end of the top block (1033) away from the upper die handle (1031) abuts against the tooth block (201).

4. The composite board compression performance testing apparatus according to claim 3, wherein: The bottom wall of the pressing beam (102) is fixedly provided with an upper sleeve (18), the upper die handle (1031) is inserted into the upper sleeve (18), the upper die handle (1031) and the upper sleeve (18) are connected through a pin shaft, and the upper die handle (1031) is threadedly provided with an upper locking ring (19), and the top wall of the upper locking ring (19) abuts against the bottom wall of the upper sleeve (18).

5. The composite board compression performance testing apparatus according to claim 1, wherein: The base (104) is provided with a second guide rail (21), the bottom wall of the shell (105) is provided with a second sliding block (22), the second sliding block (22) is slidably arranged on the second guide rail (21), and the base (104) is provided with a limiting block (27) at each end along the length direction of the second guide rail (21).

6. The composite board compression performance testing apparatus according to claim 1, wherein: The locking piece (203) comprises a locking rod (2031) and a locking sleeve (2032), the locking rod (2031) is rotationally arranged in one tooth block (201) on both sides of the sample plate (52), the locking sleeve (2032) is fixedly arranged on the other tooth block (201), the locking rod (2031) is slidingly inserted into the locking sleeve (2032), a locking block (23) is fixedly arranged on the outer side wall of the locking rod (2031), an inclined sliding groove (24) is arranged on the inner wall of the locking sleeve (2032), a locking groove (25) is arranged at the bottom of the sliding groove (24), and the tooth block (201) is provided with a second elastic member (26) for driving the locking rod (2031) to rotate and reset and enabling the locking block (23) to be clamped in the locking groove (25).

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