A microcomputer-controlled electronic compression testing machine

Abstract

The present invention relates to the technical field of compression testing machines, and in particular to a microcomputer-controlled electronic compression testing machine, comprising a mounting platform, a console and two groups of fixed rods are respectively fixedly mounted on the top of the mounting platform, the two groups of fixed rods are symmetrical to each other, and a fixed block is commonly mounted on the outer sides of the two groups of fixed rods near the top positions, and also comprises a load device, and the load device comprises a sliding assembly and a load application assembly. The present invention can evaluate the ability of materials to resist bending and fracture by applying loads to the materials to be tested through the mutual cooperation of the load device, the support device and the laser device, and when the load device is used to perform compression tests on materials with larger areas, the local stress concentration on the materials can be reduced by a dispersed pressurization method, so as to avoid the situation where the applied stress is too concentrated and the compressive strength data is inaccurate, and the material can be prevented from being damaged prematurely at the stress concentration point, thereby ensuring the accuracy of the compressive strength data.

Description

Technical Field

[0001] The invention relates to the technical field of compression testing machines, in particular to a microcomputer-controlled electronic compression testing machine. Background Art

[0002] The microcomputer-controlled electronic compression testing machine is a device specially used for compressive strength testing of materials. It has the characteristics of high precision and high efficiency, and can perform compressive strength tests on various materials. It is widely used in construction and building materials, aerospace, machinery manufacturing, wire and cable, rubber and plastics, textiles, home appliances and other industries.

[0003] When existing compression testing machines perform compression tests on measured materials, most of them apply pressure to the measured materials through a separate pressure plate. When performing compression tests on materials whose area exceeds that of the pressure plate, if pressure is still applied through a separate pressure plate, a certain part of the measured material will be subjected to concentrated pressure, resulting in excessive concentration of stress on the measured material, making it impossible to accurately obtain the compressive strength of the measured material. At the same time, excessive concentration of stress can easily cause premature damage to the stress concentration point of the measured material, greatly reducing the accuracy of the compressive strength data. In addition, if the single pressure plate is simply replaced with multiple pressure plates to apply stress, the consistency of the pressure applied by the multiple pressure plates cannot be guaranteed, resulting in uneven stress application, and thus the accuracy of the compressive strength data cannot be guaranteed, and the practicality is poor. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when the compression testing machine in the prior art performs compression testing on materials with a large area, due to the single pressure-applying tool, the stress on the material is easily excessively concentrated, thereby causing inaccurate compressive strength data, and a microcomputer-controlled electronic compression testing machine is proposed.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a microcomputer-controlled electronic compression testing machine, comprising a mounting platform, a console and two sets of fixing rods are fixedly mounted on the top of the mounting platform, the two sets of fixing rods are symmetrical to each other, and a fixing block is commonly installed on the outer side of the two sets of fixing rods near the top, and also includes:

[0006] A load device, the load device comprises a sliding assembly and a load applying assembly, the sliding assembly is fixedly arranged at the bottom of the fixed block and is used to adjust the position of the load applying assembly, the load applying assembly comprises a rotating component and four groups of cylinders, the rotating component is arranged at the bottom of the sliding component and is used to rotate the four groups of cylinders, the four groups of cylinders are all installed at the bottom of the rotating component, and the output ends of the four groups of cylinders are all fixedly connected with load seats, the four groups of load seats are all in a quarter circle shape, and multiple groups of electromagnetic blocks are installed on both sides of the four groups of load seats facing inward, and the two sides of the four groups of load seats facing inward are abutted against each other through the multiple groups of electromagnetic blocks;

[0007] The supporting device is arranged on the top of the mounting platform and is located directly below the load device, and is used for placing the material to be tested.

[0008] In the above-mentioned microcomputer-controlled electronic compression testing machine, the sliding assembly includes a sliding plate and four groups of sliding tables, the sliding plate is fixedly installed at the bottom of the fixed block, and two groups of linear slide rails are symmetrically installed at the bottom of the sliding plate, the bottom ends of the two groups of linear slide rails are opened with grooves, ball screws are installed in the two groups of grooves, and motors for driving the ball screws to rotate are installed inside the two groups of linear slide rails. The four groups of sliding tables are symmetrical in pairs, two groups of sliding tables are slidably connected to one group of linear slide rails and threadedly connected to one group of ball screws, and the other two groups of sliding tables are slidably connected to another group of linear slide rails and threadedly connected to another group of ball screws, and the rotating parts are arranged at the bottom ends of the four groups of sliding tables.

[0009] In the above-mentioned microcomputer-controlled electronic compression testing machine, the two sets of linear slide rails are made of hardened steel.

[0010] In the above-mentioned microcomputer-controlled electronic compression testing machine, laser devices are installed on both sides of the sliding plate to scan the surface of the material to be tested.

[0011] In the above-mentioned microcomputer-controlled electronic compression testing machine, the rotating component includes four groups of connecting bearings, which are respectively fixedly installed on the bottom ends of four groups of sliding tables, and the bottom ends of the four groups of connecting bearings are rotatably connected with rotating shafts, the bottom ends of the four groups of rotating shafts are provided with internal threads, the top ends of the four groups of cylinders are fixedly installed with screws matching the internal threads, and the four groups of cylinders are detachably installed on the bottom ends of the four groups of rotating shafts through screws.

[0012] In the above-mentioned microcomputer-controlled electronic compression testing machine, the four groups of rotating shafts and the four groups of load seats are all made of steel.

[0013] In the above-mentioned microcomputer-controlled electronic compression testing machine, the supporting device includes a base, a connecting column is fixedly connected at the middle position of the bottom end of the base, and the base is fixedly mounted on the top of the mounting platform through the connecting column, and supporting slide rails are installed on both sides of the base near the top position, and two groups of support blocks are slidably connected on the two groups of support slide rails, and a fixing component is arranged on the top of the base for fixing the two groups of support blocks.

[0014] In the above-mentioned microcomputer-controlled electronic compression testing machine, the fixing assembly includes an electromagnetic plate, which is fixedly mounted on the top of the base, and the top of the electromagnetic plate abuts against the bottom ends of the two groups of support blocks.

[0015] In the above-mentioned microcomputer-controlled electronic compression testing machine, pressure sensors are installed on the top ends of the two groups of support blocks.

[0016] In the above-mentioned microcomputer-controlled electronic compression testing machine, the two groups of support blocks are both made of titanium alloy material.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The present invention can evaluate the ability of the material to resist bending and fracture by applying load to the material to be tested through the cooperation of the load device, the support device and the laser device. The setting of the load device can reduce the local stress concentration on the material by a dispersed pressurization method when performing a compressive test on a material with a large area according to its own needs, thereby avoiding the situation that the applied stress is too concentrated and causes inaccurate compressive strength data. At the same time, it can prevent the tested material from being damaged prematurely at the stress concentration point, thereby ensuring the accuracy of the compressive strength data. When the test material is pressurized by a dispersed pressurization method, the coordinated movement of the four load seats can be guaranteed, thereby ensuring the consistency of the pressure stress applied by the four load seats, thereby avoiding the situation that the stress is unevenly applied, and finally obtaining more accurate compressive strength data.

[0019] 2. The present invention, through the setting of the load device and the laser device, can make the compression testing machine suitable for more materials of different sizes and shapes, and can also obtain more accurate compressive strength data. When the shape and size of the material to be tested is just suitable for the load seat of the initial shape, there is no need to adjust the position and shape at this time, and it is only necessary to control the load seat to press down directly through four groups of cylinders. If the shape and size of the material to be tested is relatively special, then according to the data scanned by the laser device, the cross-sectional area between the four groups of load seats is elongated through displacement, so that the four groups of load seats can adapt to materials of different sizes and shapes, thereby achieving the best structural adjustment. After that, the four groups of load seats are enabled to work together through the electromagnetic block, and the four groups of cylinders are rotated as a whole through the rotating shaft, so that the application of stress can be concentrated in the middle of the material. At this time, the application of stress can be perpendicular to the material to ensure uniform stress application. If the test material is small, it can also be combined with two or so load seats to apply load to the test material to ensure uniform stress.

[0020] 3. The present invention, through the arrangement of the electromagnetic plate in the support device, can move or fix the support block by powering on and off according to its own needs, thereby adjusting or fixing the position of the support block. After the position adjustment of the support block is completed, the electromagnetic plate is energized through the console to fix the electromagnetic plate and the support block together, providing a stable support structure to ensure that the support device will not be displaced during the load application process, thereby ensuring the accuracy of the test results.

[0021] 4. The present invention can monitor and record the load applied to the material in real time by setting the pressure sensor in the support device, ensure the precise control of the applied load, and can measure the load with high precision and feed back to the control console in conjunction with the load device. In addition, when the material to be tested is placed on the support block, if the pressure on the left and right sides of the pressure sensor is different, the position of the material and the position of the load applying component can be fine-tuned to ensure that the load application point is always in the middle position, thereby ensuring the accuracy of the compression test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall front view structure of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the overall isometric structure of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the axonometric structure of a load device of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0025] Figure 4 This is a bottom view structural schematic diagram of a sliding system of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the axonometric structure of a sliding system of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0027] Figure 6 This is a front view structural schematic diagram of a load application system of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the isometric structure of a load application system of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0029] Figure 8 This is a front view structural schematic diagram of a support device of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0030] Fig. 9 This is a schematic diagram of the isometric structure of a load application system of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0031] Fig.10 This is a structural schematic diagram of the first stage of an example diagram of the shape change of an electromagnetic plate of a microcomputer-controlled electronic compression testing machine proposed by the present invention;

[0032] Fig.11 This is a structural schematic diagram of the second stage of an example diagram of the shape change of an electromagnetic plate of a microcomputer-controlled electronic compression testing machine proposed by the present invention.

[0033] In the figure: 1 load device, 11 sliding assembly, 111 linear slide rail, 112 sliding table, 113 laser device, 114 ball screw, 115 sliding plate, 12 load application assembly, 121 connecting bearing, 122 rotating shaft, 123 cylinder, 124 load seat, 125 electromagnetic block, 2 support device, 21 support block, 22 supporting slide rail, 23 base, 24 pressure sensor, 25 electromagnetic plate, 26 connecting column, 3 control console, 4 mounting table, 5 fixing rod, 6 fixing block. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figures 1 to 5A microcomputer-controlled electronic compression testing machine includes a mounting platform 4, a console 3 and two sets of fixing rods 5 are fixedly installed on the top of the mounting platform 4, the two sets of fixing rods 5 are symmetrical to each other, and a fixing block 6 is installed on the outer side of the two sets of fixing rods 5 near the top. A load device 1 is arranged at the middle position of the bottom end of the fixing block 6, which is used to apply a load to the material to be tested. A support device 2 is arranged on the top of the mounting platform 4 for placing the material to be tested. The support device 2 is located directly below the load device 1. The load device 1 includes a sliding component 11 and a load applying component 12, which are respectively used to adjust the position of the load applying component 12 and for applying load, the sliding assembly 11 is fixedly arranged at the bottom of the fixed block 6, the load applying assembly 12 is arranged at the bottom of the sliding assembly 11, the sliding assembly 11 includes a sliding plate 115 and four sets of sliding tables 112, the sliding plate 115 is fixedly arranged at the bottom of the fixed block 6, and two sets of linear guide rails 111 are symmetrically arranged at the bottom of the sliding plate 115, the bottoms of the two sets of linear guide rails 111 are provided with grooves, ball screws 114 are installed in the two sets of grooves, motors for driving the ball screws 114 to rotate are installed inside the two sets of linear guide rails 111, and the four sets of sliding tables 112 are symmetrical in pairs, wherein the two sets of sliding tables 112 is slidably connected to a set of linear guide rails 111 and is threadedly connected to a set of ball screws 114. The other two sets of sliding tables 112 are slidably connected to another set of linear guide rails 111 and are threadedly connected to another set of ball screws 114. The load applying assembly 12 is arranged at the bottom of the four sets of sliding tables 112. The two sets of linear guide rails 111 are made of hardened steel. The hardened steel has high wear resistance and low friction coefficient, ensuring that the movement of the sliding table 112 is smooth and accurate. Laser devices 113 are installed on both sides of the sliding plate 115. The laser device 113 is a prior art, and its specific structural design is not repeated here. When in use First, place the material to be tested on the support device 2. After placing the material, the laser device 113 starts to scan the surface of the material to obtain its shape and position data. These data will be used to determine whether the sliding table 112 moves and how the sliding table 112 moves, so that the load device 1 can accurately align with the material to be tested. According to the scanning result of the laser device 113, the motors inside the two sets of linear slide rails 111 are started through the control console 3, so that the two sets of ball screws 114 start to rotate, thereby causing the sliding table 112 to start moving, and then the load application assembly 12 on the sliding table 112 is adjusted to a suitable position.

[0036] Reference Figures 3 to 11The load applying assembly 12 includes a rotating component and four groups of cylinders 123. The rotating component is arranged at the bottom end of the four groups of sliding tables 112, and is used to rotate the four groups of cylinders 123. The four groups of cylinders 123 are all installed at the bottom end of the rotating component, and the output ends of the four groups of cylinders 123 are fixedly connected with load seats 124. The four groups of load seats 124 are all in a quarter circle shape, and multiple groups of electromagnetic blocks 125 are installed on both sides of the four groups of load seats 124 facing inward. The four groups of load seats 124 are abutted against each other on both sides facing inward by multiple groups of electromagnetic blocks 125. The rotating component includes four groups of connecting bearings 121, and the four groups of connecting bearings 121 are respectively fixedly installed at the bottom ends of the four groups of sliding tables 112, and the bottom ends of the four groups of connecting bearings 121 are rotatably connected with rotating shafts 122. The bottom ends of the four groups of rotating shafts 122 are all provided with internal threads. The tops of the four groups of cylinders 123 are fixedly installed with screws matching the internal threads. The four groups of cylinders 123 are detachably installed through screws Installed at the bottom end of the four groups of rotating shafts 122, the four groups of rotating shafts 122 can be controlled to rotate separately through the control console 3, so that the four groups of cylinders 123 can be controlled to rotate separately, and then the angles of the four load seats 124 can be adjusted separately according to their own needs. The electromagnetic block 125 is installed on the side of the load seat 124 to fix the position of the load seat 124. The electromagnetic block 125 generates a magnetic field by energizing to generate an adsorption force. When the load seat 124 is adjusted to the optimal position, the four load seats 124 will be tightly connected through the electromagnetic block 125 to ensure the overall coordination during the load application process, and ensure that the load seat 124 will not be displaced during the load application process, thereby ensuring the accuracy of the test. During the test, the cylinder 123 is controlled by the control console 3 to gradually increase the applied load to simulate the stress condition of the material in actual use. When the shape and size of the material to be tested is just suitable for the initial shape of the load seat 124 (such as Figure 3 ), at this time, there is no need to adjust the position and shape, just control the load seat 124 to press down directly through the four groups of cylinders 123. If the shape and size are special, adjustment is required. The following is an example. Fig.10 The first stage is an example of the shape change of the load seat 124. The position adjustment is changed according to the scanning of the laser device 113. The cross-sectional area between the four groups of load seats 124 is elongated through displacement to adapt to materials of different sizes, thereby achieving the best structural adjustment. After the structural adjustment is completed, the electromagnetic block 125 starts to operate, so that the four groups of load seats 124 can be closely connected, so that the four groups of load seats 124 can work together. In addition, it can be seen from the figure that the direction of force application is generally an oblique angle. Fig.11This is an example diagram of the shape change of the load seat 124. In the second stage, after the structure is adjusted, the four groups of cylinders 123 are rotated as a whole through the rotating shaft 122, so that the application of stress can be concentrated in the middle of the material. At this time, the application of stress can be perpendicular to the material, thereby avoiding the dispersion of stress when it is applied. Generally speaking, when a material with an area exceeding the pressure plate is subjected to a compression test, the applied stress will be too concentrated, resulting in inaccurate compressive strength data; if the pressure plate is simply changed into four parts to apply stress to four points on the material, since the four parts cannot move in coordination, it is impossible to ensure the consistency of the pressure stress of multiple pressure plates, resulting in uneven stress application and failure to obtain reliable compressive strength data. This design uses four cylinders 123 to apply loads separately, which can be more accurate. The load at each position is precisely controlled to ensure that the force applied to the entire test material is more uniform. The dispersed pressurization method can reduce the local stress concentration on the material, avoid the situation where the applied stress is too concentrated and cause inaccurate compressive strength data, and prevent the tested material from being damaged prematurely at the stress concentration point. If the test material is small, the load can be applied to the test material through a combination of two or so load seats 124 to ensure uniform stress, so that the compression testing machine can be suitable for more materials of different sizes and shapes while obtaining more accurate compressive strength data. The four sets of rotating shafts 122 and the four sets of load seats 124 are all made of high-strength steel to ensure their stability and durability under high loads, and to ensure that they are not deformed or offset during the load application process.

[0037] Reference Figure 2 , Figure 8 and Fig. 9The supporting device 2 includes a base 23, a connecting column 26 is fixedly connected at the middle position of the bottom end of the base 23, and the base 23 is fixedly mounted on the top end of the mounting platform 4 through the connecting column 26. Support slide rails 22 are installed on both sides of the base 23 near the top end. Two groups of support blocks 21 are slidably connected on the two groups of support slide rails 22. A fixing component is arranged at the top end of the base 23 for fixing the two groups of support blocks 21. The fixing component includes an electromagnetic plate 25, which is fixedly mounted on the top end of the base 23, and the top end of the electromagnetic plate 25 abuts against the bottom ends of the two groups of support blocks 21. When the area of ​​the material is large or small, the electromagnetic plate 25 is put in a power-off state through the control console 3. At this time, the support blocks 21 on the support slide rail 22 are in a movable state. Then, the two groups of support blocks 21 on the support slide rail 22 are adjusted according to the area of ​​the material. After the position adjustment is completed, the electromagnetic plate 25 is energized through the control console 3 so that the electromagnetic plate 25 generates a magnetic field, thereby generating an adsorption force on the support block 21. At this time, the electromagnetic plate 25 and the support block 21 will be fixed together to provide a stable support structure to ensure that the support device 2 will not be displaced during the load application process, and pressure sensors 24 are installed on the top of the two groups of support blocks 21. The pressure sensors 24 are used to monitor and record the load applied to the material in real time to ensure accurate control of the applied load. In conjunction with the load device 1, the load can be measured with high precision and fed back to the console 3. In addition, when the material to be tested is placed on the support block 21, if the pressure on the left and right sides of the pressure sensor 24 is different, the position of the material and the position of the load application component 12 can be fine-tuned to ensure that the load application point is always in the middle position, thereby ensuring the accuracy of the compression test results. The two groups of support blocks 21 are made of titanium alloy material, have high rigidity and durability, and can withstand large loads without deformation.

[0038] The present invention is mainly used for testing the compressive performance of materials, and the ability of materials to resist bending and breaking is evaluated by applying load to the materials. The testing machine is mainly composed of a load device 1, a support device 2 and a control console 3.

[0039] First, the material to be tested is placed on the support device 2, which is used to support and guide the movement of the load device 1 and provide a stable reference. After the material is placed, the laser device 113 is turned on through the control console 3 to scan the surface of the material to obtain the material shape and position data. These data will be used to determine whether the slide table 112 moves and how the slide table 112 moves, so that the load device 1 can accurately align with the material to be tested. According to the scanning results of the laser device 113, the motors inside the two sets of linear slide rails 111 are started through the control console 3, so that the two sets of ball screws 114 start to rotate, so that the slide table 112 starts to move, and then the load application assembly 12 on the slide table 112 is adjusted to a suitable position.

[0040] The support device 2 is composed of a support block 21, a support rail 22, a base 23, a pressure sensor 24 and an electromagnetic plate 25. The support block 21 is used to directly contact the material bearing load device 1 to ensure its stability during the load application process. The support block 21 is made of titanium alloy material, has high rigidity and durability, and can withstand large loads without deformation. The support rail 22 is used to guide the movement of the support block 21 and adjust the position according to the size of the material to ensure that different materials are in the optimal position for applying the load. The support rail 22 is usually composed of a high-precision guide rail and a slider, with a low friction coefficient and high wear resistance. The base 23 is the foundation of the entire compression testing machine, carrying and fixing all components. The base 23 is made of high-strength steel to ensure stability and durability under high loads. The pressure sensor 24 is used to monitor and record the load applied to the material in real time to ensure accurate control of the applied load. The pressure sensor 24 is installed on the support block 21. It can measure the load with high precision and feedback to the console 3 in cooperation with the load device 1. In addition, when the material to be tested is placed on the support block 21, if the pressure on the left and right sides of the pressure sensor 24 is different, the position of the material and the position of the load application component 12 can be fine-tuned to ensure that the load application point is always in the middle position, thereby ensuring the accuracy of the compression test results. The electromagnetic plate 25 is a device that uses electromagnetic force to fix. When the area of ​​the material is large or small, the electromagnetic plate 25 is powered off through the console 3. At this time, the support block 21 on the support rail 22 is in a movable state. Then, the two groups of support blocks 21 on the support rail 22 are adjusted according to the area of ​​the material. After the position adjustment is completed, the electromagnetic plate 25 is powered on through the console 3 so that the electromagnetic plate 25 generates a magnetic field, thereby generating an adsorption force on the support block 21. At this time, the electromagnetic plate 25 and the support block 21 will be fixed together to provide a stable support structure to ensure that the support device 2 will not be displaced during the load application process.

[0041] The sliding assembly 11 mainly ensures that the load device 1 can contact the material in the best position structure before applying the load, so that the load device 1 can apply the load smoothly and evenly. The assembly is mainly composed of a linear slide 111, a slide table 112, a laser device 113, a ball screw 114 and a slide plate 115. The linear slide 111 is a high-precision guide rail used to guide the slide table 112 to move linearly on a horizontal plane. It is made of hardened steel with high wear resistance and low friction coefficient, ensuring that the movement of the slide table 112 is smooth and precise. The slide table 112 is mounted on the linear slide 111 and moves thereon. A ball screw 114 is mounted on the sliding table 112 and driven by the ball screw 114. The ball screw 114 is a mechanical element that converts rotational motion into linear motion, thereby achieving precise movement of the load device 1 on a horizontal plane to ensure that the load application assembly 12 can be accurately aligned with the material to be tested. The combined use of the linear slide 111 and the ball screw 114 can further improve the overall positioning accuracy of the sliding assembly 11. The linear slide 111 ensures the smooth movement of the slider, while the ball screw 114 provides high-precision transmission. The two complement each other. At the same time, the high rigidity of the linear slide 111 combined with the transmission capacity of the ball screw 114 enhances the rigidity and stability of the entire sliding assembly 11, and helps to resist external interference and vibration.

[0042] The laser device 113 is used to scan and locate the position and size of the material to be tested. It is installed on both sides of the sliding assembly 11. The laser device 113 can generate a high-precision laser beam to scan the surface of the material and obtain its shape and position data. These data will be used to guide the movement of the sliding table 112 so that the load device 1 can accurately align with the material to be tested to ensure the accuracy of the test. After the material is prepared, the load application stage begins. The cylinder 123 is started through the control console 3, and the drive movement generates a linear thrust to transfer the load to the load seat 124 to apply the load to the material to be tested.

[0043] The load application assembly 12 is a key part for applying load in the test machine, and is composed of a connecting bearing 121, a rotating shaft 122, a cylinder 123, a load seat 124, and an electromagnetic block 125. The console 3 can control the rotation of the four groups of rotating shafts 122, thereby controlling the rotation of the four groups of cylinders 123, and then adjusting the angles of the four load seats 124 according to their own needs. The rotating shaft 122 is usually made of high-strength steel to ensure its stability and durability under high loads, and to ensure that no deformation or displacement occurs during the load application process. The cylinder 123 is a device that generates linear thrust through air pressure for applying loads. Its advantages are simple structure, flexible control, and rapid response. The load seat 124 is a component that carries and transmits the load to the material to be tested, and is made of high-strength steel to ensure its stability and durability under high loads. The electromagnetic block 125 is installed on the side of the load seat 124 and is used to fix the position of the load seat 124. The electromagnetic block 125 generates a magnetic field by energizing to generate an adsorption force. When the load seat 124 is adjusted to the optimal position, the four load seats 124 will be tightly connected through the electromagnetic block 125 to ensure the overall coordination during the load application process, ensuring that the load seat 124 will not be displaced during the load application process, thereby ensuring the accuracy of the test.

[0044] During the test, the cylinder 123 is controlled by the console 3 to gradually increase the applied load to simulate the stress of the material in actual use. The console 3 monitors and records the load and material deformation in real time to generate test data. The data generated during the test is recorded for subsequent analysis and evaluation.

[0045] If the shape and size of the material to be tested is just suitable for the initial shape of the load holder 124 (such as Figure 3 ), at this time, there is no need to adjust the position and shape, just control the load seat 124 to press down directly through the four groups of cylinders 123. If the shape and size are special, adjustment is required. The following is an example. Fig.10 The first stage is an example of the shape change of the load seat 124. The position adjustment is changed according to the scanning of the laser device 113. The cross-sectional area between the four groups of load seats 124 is elongated through displacement to adapt to materials of different sizes, thereby achieving the best structural adjustment. After the structural adjustment is completed, the electromagnetic block 125 starts to operate, so that the four groups of load seats 124 can be closely connected, so that the four groups of load seats 124 can work together. In addition, it can be seen from the figure that the direction of force application is generally an oblique angle. Fig.11This is the second stage of the example diagram of the shape change of the load seat 124. After the structure is adjusted, the four groups of cylinders 123 are rotated as a whole through the rotating shaft 122, so that the application of stress can be concentrated in the middle of the material. At this time, the application of stress can be perpendicular to the material, thereby avoiding the dispersion of stress when it is applied. Generally speaking, when a compression test is performed on a material whose area exceeds that of the pressure plate, the applied stress will be too concentrated, resulting in inaccurate compressive strength data; if the pressure plate is simply changed into four parts to apply stress to four points on the material, the four parts cannot move in coordination, and thus the consistency of the pressure applied by multiple pressure plates cannot be guaranteed, resulting in uneven stress application and no reliable compressive strength data can be obtained. This design uses four cylinders 123 to apply loads separately, so that the load at each position can be controlled more accurately to ensure that the force applied to the entire test material is more uniform. The dispersed pressurization method can reduce the local stress concentration on the material, avoid the situation where the applied stress is too concentrated and the compressive strength data is inaccurate, and at the same time prevent the tested material from being damaged prematurely at the stress concentration point. If the test material is small, it can also be combined with two or so load seats 124 to apply load to the test material to ensure uniform stress, so that the compression testing machine can be suitable for more materials of different sizes and shapes while also being able to obtain more accurate compressive strength data.

[0046] After the test is completed, the cylinder 123 is controlled by the console 3 to gradually reduce the applied load until it is completely unloaded. The material to be tested is removed from the load seat 124 and its surface and internal deformation are checked. According to the data generated during the test, the compressive properties of the material are analyzed and its reliability and durability in actual use are evaluated. The console 3 is the operation and control center of the compression testing machine, which is used to control the entire test process and control and monitor the various parts of the testing machine through software. Through the above process, the compression testing machine can accurately apply and control the load, perform compression tests on various materials and structures, and provide reliable data support.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A microcomputer-controlled electronic compression testing machine, comprising a mounting platform (4), wherein a control console (3) and two sets of fixing rods (5) are fixedly mounted on the top of the mounting platform (4), the two sets of fixing rods (5) are symmetrical to each other, and a fixing block (6) is commonly mounted on the outer side of the two sets of fixing rods (5) near the top, wherein: Also includes: A load device (1), the load device (1) comprising a sliding assembly (11) and a load applying assembly (12), the sliding assembly (11) being fixedly arranged at the bottom end of a fixed block (6) and used for adjusting the position of the load applying assembly (12), the load applying assembly (12) comprising a rotating component and four groups of cylinders (123), the rotating component being arranged at the bottom end of the sliding assembly (11) and used for rotating the four groups of cylinders (123), the four groups of cylinders (123) being all mounted at the bottom end of the rotating component, and the output ends of the four groups of cylinders (123) being all fixedly connected to a load seat (124), the four groups of load seats (124) being all in a quarter-circular shape, and a plurality of groups of electromagnetic blocks (125) being mounted on both sides of the four groups of load seats (124) facing inwards, and the four groups of load seats (124) facing inwards being abutted against each other via the plurality of groups of electromagnetic blocks (125); A support device (2), wherein the support device (2) is arranged on the top of the mounting platform (4), and the support device (2) is located directly below the load device (1), and is used to place the material to be tested; The sliding assembly (11) comprises a sliding plate (115) and four groups of sliding tables (112), wherein the sliding plate (115) is fixedly mounted on the bottom end of the fixed block (6), and two groups of linear guide rails (111) are symmetrically mounted on the bottom end of the sliding plate (115), the bottom ends of the two groups of linear guide rails (111) are provided with grooves, and ball screws (114) are mounted in the two groups of grooves, and motors for driving the ball screws (114) to rotate are mounted inside the two groups of linear guide rails (111), and the four groups of sliding tables (112) are symmetrical in pairs, wherein two groups of sliding tables (112) are slidably connected to one group of linear guide rails (111) and are threadedly connected to one group of ball screws (114), and the other two groups of sliding tables (112) are slidably connected to another group of linear guide rails (111) and are threadedly connected to another group of ball screws (114), and the rotating components are arranged at the bottom ends of the four groups of sliding tables (112); The rotating component comprises four groups of connecting bearings (121), the four groups of connecting bearings (121) are respectively fixedly mounted on the bottom ends of the four groups of sliding platforms (112), and the bottom ends of the four groups of connecting bearings (121) are rotatably connected with rotating shafts (122), the bottom ends of the four groups of rotating shafts (122) are all provided with internal threads, the top ends of the four groups of cylinders (123) are all fixedly mounted with screws matching the internal threads, and the four groups of cylinders (123) are all detachably mounted on the bottom ends of the four groups of rotating shafts (122) through the screws; The four sets of rotating shafts (122) and the four sets of load seats (124) are all made of steel.

2. A microcomputer-controlled electronic compression testing machine according to claim 1, characterized in that: Both sets of linear guide rails (111) are made of hardened steel.

3. A microcomputer-controlled electronic compression testing machine according to claim 1, characterized in that: Laser devices (113) are installed on both sides of the sliding plate (115) for scanning the surface of the material to be tested.

4. A microcomputer-controlled electronic compression testing machine according to claim 1, characterized in that: The support device (2) comprises a base (23), a connecting column (26) is fixedly connected at the middle position of the bottom end of the base (23), and the base (23) is fixedly mounted on the top end of the mounting platform (4) through the connecting column (26), support slide rails (22) are installed on both sides of the base (23) near the top end, two groups of support blocks (21) are slidably connected to the two groups of support slide rails (22), and a fixing component is arranged at the top end of the base (23) for fixing the two groups of support blocks (21).

5. A microcomputer-controlled electronic compression testing machine according to claim 4, characterized in that: The fixing assembly comprises an electromagnetic plate (25), wherein the electromagnetic plate (25) is fixedly mounted on the top of the base (23), and the top of the electromagnetic plate (25) abuts against the bottom ends of the two groups of support blocks (21).

6. A microcomputer-controlled electronic compression testing machine according to claim 5, characterized in that: Pressure sensors (24) are installed on the top ends of the two groups of support blocks (21).

7. A microcomputer-controlled electronic compression testing machine according to claim 6, characterized in that: The two groups of support blocks (21) are both made of titanium alloy material.

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