A pressure testing machine and intelligent control system

Abstract

The application relates to the technical field of pressure testing machines, and discloses a pressure testing machine and an intelligent control system, which comprise a control console, a downward pressing part and a fixing table, the inside of the fixing table is fixedly provided with a placing plate; a bidirectional screw rod is rotatably arranged in the inside of the placing plate, two screw nuts are threadedly connected to the bidirectional screw rod, and two mounting plates are fixedly arranged on the two screw nuts; a driving motor is arranged on the fixing table, the shaft output end of the driving motor is fixedly connected with the center of one end of the bidirectional screw rod; a moving plate is slidably arranged on each of the two mounting plates, and the moving plate is perpendicular to the corresponding mounting plate. The application can push the to-be-tested object to move on the X axis and the Y axis, so that the to-be-tested object is accurately positioned on the geometric center point of the pressure testing machine, the uniformity of stress and the accuracy of results are ensured, and the application can be suitable for to-be-tested objects with different specifications and sizes, and the application range is wider.

Description

Technical Field

[0001] This invention relates to the field of pressure testing machine technology, specifically to a pressure testing machine and an intelligent control system. Background Technology

[0002] Compression testing machines are experimental equipment widely used in engineering, production, scientific research and education. Their functions and roles involve the load-bearing capacity, strength, stability and quality of materials, components and products. They play an important role in the development, production, safety assurance and education and research of materials and products by testing the strength of materials and components.

[0003] A patent document with publication number CN211148302U discloses a concrete pressure testing machine, including a base. A fixed column is provided on the left side of the upper end face of the base. A top plate and a bottom plate are respectively connected to the right end face of the fixed column. A number of support columns are connected between the top plate and the bottom plate. A number of support rods are connected between the bottom plate and the base. A horizontal plate is provided between the top plate and the bottom plate. A hydraulic cylinder is installed in the middle of the upper end face of the top plate. The output end of the hydraulic cylinder passes through the horizontal plate and is fixedly connected to an upper pressure plate.

[0004] However, the above-mentioned device has the following problems when in use:

[0005] When conducting pressure tests on an object, to ensure uniform force distribution, data accuracy, and safety, the object must generally be positioned at the geometric center of the pressure testing machine. However, existing equipment lacks a corresponding positioning mechanism, and placement is typically based on experience. This lack of standardized placement can affect the accuracy of the test results.

[0006] To address these issues, we propose a pressure testing machine and intelligent control system. Summary of the Invention

[0007] The purpose of this invention is to solve the problems existing in the prior art, and to propose a pressure testing machine and intelligent control system that can push the test object to move on the X and Y axes, so that the test object is accurately located at the geometric center point of the pressure testing machine, ensuring the uniformity of force and the accuracy of the results. It can be applied to test objects of different specifications and sizes, and has a wider range of applications.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A pressure testing machine and intelligent control system include a control panel, a pressure section and a fixed platform, wherein a placement plate is fixedly installed inside the fixed platform;

[0010] The placement plate is internally mounted with a double-acting lead screw, and two lead screw nuts are threadedly connected to the double-acting lead screw. Each of the two lead screw nuts is fixedly mounted with a mounting plate.

[0011] A drive motor is mounted on the fixed platform, and the output end of the drive motor shaft is fixedly connected to the center of one end of a bidirectional lead screw.

[0012] Each of the two mounting plates has a movable plate that is slidably mounted on it, and the movable plate is perpendicular to the corresponding mounting plate.

[0013] Preferably, a servo motor is installed inside the fixed platform. A rotating rod is fixedly installed at the output end of the shaft of the servo motor, and a transmission gear is fixedly installed at the other end of the rotating rod. Two racks are fixedly installed at the bottom of the placement plate, and connecting blocks are fixedly installed on both racks. Sliding grooves are opened on both connecting blocks.

[0014] Preferably, a slider is fixedly installed at the bottom of both movable plates, and the slider can slide inside the corresponding groove.

[0015] Preferably, a slag discharge channel is provided on the fixed platform. The slag discharge channel is circular, and a slag collection plate is fixedly installed inside the fixed platform. The vertical projection of the slag discharge channel is completely on the slag collection plate.

[0016] Preferably, an installation ring is fixedly installed on the rotating rod, and a cleaning brush is fixedly installed on the installation ring. The cleaning brush is in direct contact with the slag collection plate, and a slag discharge trough is opened on the slag collection plate. A slag collection chamber is slidably installed inside the fixed platform, and the slag collection chamber is located directly below the slag discharge trough.

[0017] Preferably, cleaning sleeves are fixedly installed at both ends of the two lead screw nuts, and the cleaning sleeves are in direct contact with the bidirectional lead screw.

[0018] The intelligent control system of the present invention includes an intelligent control system, characterized in that the intelligent control system includes a machine vision module, a test analysis module, and a test object positioning and analysis module;

[0019] The machine vision module is used to capture external images of the object under test, and to identify the position, size, and shape of the object under test through image recognition algorithms; the position, size, and shape of the object under test are then labeled as visual information.

[0020] The test object positioning analysis module is used to receive visual information of the test object, and perform dynamic operation control analysis in the X-axis and Y-axis directions in combination with the performance parameters of the drive motor and servo motor to obtain the expected running time of the drive motor and servo motor respectively; and perform compensation analysis to obtain the duration compensation coefficient of the expected running time of the drive motor and servo motor respectively.

[0021] Upon receiving the positioning signal of the object under test, the drive motor is started, and the expected running time of the drive motor is dynamically adjusted according to the duration compensation coefficient H to ensure that the object under test can be accurately moved to the predetermined position; at the same time, the servo motor is driven, and the expected running time of the servo motor is dynamically adjusted according to the duration compensation coefficient.

[0022] Preferably, the present invention further includes a test analysis module;

[0023] The test analysis module is used to collect test data of the test object in real time and perform stress test analysis, specifically:

[0024] Acquire test data; test data includes maximum pressure, yield pressure, elastic modulus, displacement, temperature, vibration, and angle.

[0025] The initial time is taken as the time when the pressure testing machine is used, and the current time is taken as the second time. The time range between the initial time and the second time is marked as the test time zone, and the number of the acquisition time within the test time zone is identified.

[0026] Set the preset parameters of the test object, calculate the difference between any parameter in the test data and its corresponding preset parameter to obtain the test difference; process the test difference of parameters within the test time zone, and calculate the fluctuation value of the test difference using the variance formula, the difference between the maximum and minimum test difference, and the test difference at the current time by weighting the calculation to obtain the parameter evaluation value;

[0027] The parameter evaluation values ​​of all parameters in the test data are normalized to obtain the pressure resistance value of the pressure test specimen.

[0028] Preferably, the visual information of the object under test is received, and dynamic operation control analysis in the X-axis direction is performed in combination with the performance parameters of the drive motor and the servo motor to obtain the expected running time of the drive motor, specifically:

[0029] The process involves: determining the position of the object under test on the mounting plate; calculating the difference between the edge position of the object under test along the X-axis and the position of the mounting plate to obtain two movement distances; averaging these two movement distances to obtain the average movement distance; obtaining the standard operating power of the drive motor and the angular velocity of its output shaft; obtaining the radius of the drive motor's output shaft; calculating the torque of the drive motor using its standard operating power, angular velocity, and radius; and obtaining the weight of the object under test.

[0030] Assuming that the force required to move the object under test by the mounting plate is equal to the torque provided by the drive motor, the time required to move the mounting plate is calculated using the standard operating power, weight, and average movement of the drive motor and marked as the expected running time.

[0031] Preferably, the visual information of the object under test is received, and dynamic operation control analysis is performed in the X-axis direction in combination with the performance parameters of the drive motor to obtain the expected running time of the drive motor; and a compensation analysis is performed to obtain the duration compensation coefficient of the expected running time of the drive motor, specifically:

[0032] When the drive motor is working, the working time of the drive motor is taken as the initial time, and the time area between the initial time and the current time is marked as the drive time zone; the drive time zone is divided into several drive sub-time zones at equal intervals; the moving distance between the two mounting plates in the drive sub-time zone is identified and the average value is calculated to obtain the spacing value;

[0033] Using the standard operating power of the drive motor, the weight of the test object, and the drive time zone, the expected movement distance for each drive time zone is calculated and marked as the pre-distance value.

[0034] The difference between the drive time zone interval value and the pre-interval value is calculated to obtain the interval difference value; the interval difference value of each drive time zone is normalized to obtain the duration compensation coefficient; the duration compensation coefficient is used to dynamically adjust the expected running time of the drive motor.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) The present invention is provided with a drive motor, a two-way lead screw, a mounting plate, a moving plate, a slider, a connecting block, a slide groove, a rack, a servo motor, a rotating rod and a transmission gear. The two mounting plates and the two moving plates can push the test object to move on the X-axis and Y-axis respectively, so that the test object is accurately located at the geometric center point, ensuring the uniformity of force and the accuracy of the results. Moreover, the relative position of the mounting plate and the moving plate can be adjusted, so it can be applied to test objects of different specifications and sizes, and has a wider range of applications.

[0037] (2) The present invention uses the test object positioning analysis module to perform dynamic operation control analysis in combination with the performance parameters of the drive motor and the servo motor, and further optimizes the running time of the drive motor and the servo motor through compensation analysis to ensure that the test object can move to the predetermined position accurately and efficiently, reduce positioning error, ensure the consistency of positioning in each test and the repeatability of the results, thereby improving test efficiency and enhancing the intelligence and reliability of the entire system in terms of test object movement control. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of a pressure testing machine proposed in this invention.

[0039] Figure 2 This is a schematic diagram of the internal installation structure of a pressure testing machine mounting platform proposed in this invention.

[0040] Figure 3 This is a schematic diagram illustrating the moving principle of the mounting plate of a pressure testing machine proposed in this invention.

[0041] Figure 4 This is a schematic diagram illustrating the moving principle of the moving plate of a pressure testing machine proposed in this invention.

[0042] Figure 5 This is a schematic diagram illustrating the synchronous approach principle of a moving plate in a pressure testing machine, as proposed in this invention.

[0043] Figure 6 This is a schematic diagram illustrating the slag collection principle of a pressure testing machine proposed in this invention.

[0044] Figure 7 This is a schematic diagram of the intelligent control system for a pressure testing machine proposed in this invention.

[0045] In the diagram: 1. Control panel; 2. Pressing section; 3. Fixed platform; 4. Placement plate; 5. Drive motor; 6. Bidirectional lead screw; 7. Mounting plate; 8. Moving plate; 9. Slag collection chamber; 10. Slag discharge channel; 11. Lead screw nut; 12. Cleaning sleeve; 13. Sliding block; 14. Connecting block; 15. Slide groove; 16. Rack; 17. Servo motor; 18. Rotating rod; 19. Transmission gear; 20. Mounting ring; 21. Cleaning brush; 22. Slag collection plate; 23. Slag discharge trough. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Please see Figures 1 to 7 A pressure testing machine and intelligent control system include a control panel 1, a pressing part 2 and a fixed platform 3. A placement plate 4 is fixedly installed inside the fixed platform 3. The object to be tested is placed on the placement plate 4. It is worth noting that in order to ensure the balance of force, the object to be tested needs to be located at the geometric center point of the placement plate 4.

[0048] Commands are issued by buttons on control panel 1 to cause the pressing part 2 to descend. After it comes into contact with the object to be tested, force is applied to the object to be tested through the hydraulic system or other settings. When the object to be tested is obviously damaged, the magnitude of the force is recorded by control panel 1.

[0049] A bidirectional lead screw 6 is rotatably mounted inside the placement plate 4. Two lead screw nuts 11 are threadedly connected to the bidirectional lead screw 6. Mounting plates 7 are fixedly mounted on the two lead screw nuts 11. The two lead screw nuts 11 are located in different thread directions of the bidirectional lead screw 6, and they are equidistant from the center of the bidirectional lead screw 6. Therefore, the two lead screw nuts 11 can be moved closer or further apart depending on the size and shape of the object to be measured, thereby changing the distance between the two mounting plates 7.

[0050] The midpoint of the line connecting the two mounting plates 7 is always on the same plane as the center of the placement plate 4.

[0051] A drive motor 5 is installed on the fixed platform 3, and the output end of the shaft of the drive motor 5 is fixedly connected to the center of one end of the bidirectional lead screw 6.

[0052] When the drive motor 5 starts, it causes the bidirectional lead screw 6 to rotate. The rotation of the bidirectional lead screw 6 causes the two mounting plates 7 to move closer to each other, thereby pushing the object to be tested and completing the initial fixing of the object to be tested on the X-axis. At this time, the object to be tested can also move in the Y-axis direction, but the range of movement is limited.

[0053] Each of the two mounting plates 7 has a movable plate 8 slidably mounted on it, and the movable plate 8 is perpendicular to the corresponding mounting plate 7.

[0054] The midpoint of the line connecting the two movable plates 8 is always on the same plane as the center of the placed plate 4.

[0055] By making the two movable plates 8 move synchronously on the mounting plate 7, the distance between the two movable plates 8 can be adjusted according to the distance on the Y-axis of the object to be tested, and the object to be tested can be moved toward the center position.

[0056] When the object to be tested is held by both the mounting plate 7 and the moving plate 8, it is positioned precisely at the geometric center of the placement plate 4.

[0057] Pressure sensors can be installed on both the mounting plate 7 and the movable plate 8. As needed, once the object to be tested is at the geometric center point, the mounting plate 7 and the movable plate 8 can be made to no longer contact the object to be tested, thus avoiding affecting the test data.

[0058] The fixed platform 3 is equipped with a servo motor 17. A rotating rod 18 is fixedly installed at the output end of the shaft of the servo motor 17, and a transmission gear 19 is fixedly installed at the other end of the rotating rod 18.

[0059] When the servo motor 17 is started, it can cause the rotating rod 18 to rotate, and the rotation of the rotating rod 18 causes the transmission gear 19 to rotate synchronously.

[0060] Two racks 16 are fixedly installed at the bottom of the placement plate 4. A connecting block 14 is fixedly installed on each rack 16. A sliding groove 15 is opened on each connecting block 14.

[0061] Both racks 16 are meshed with the transmission gear 19.

[0062] When the transmission gear 19 rotates, the two racks 16 will move closer or further apart synchronously under the action of meshing. Since the moving plate 8 is located on the connecting block 14, it can drive the two moving plates 8 to move closer or further apart synchronously, thereby achieving the purpose of clamping and limiting the object to be measured on the Y-axis.

[0063] Both movable plates 8 have sliders 13 fixedly installed at their bottoms, and the sliders 13 can slide inside the corresponding grooves 15.

[0064] When the rack 16 is stationary and the two mounting plates 7 are close to each other, the slider 13 moves on the slide groove 15.

[0065] When the mounting plate 7 is stationary and the rack 16 moves, the connecting block 14 drives the moving plate 8 to slide on the mounting plate 7.

[0066] A slag discharge channel 10 is provided on the fixed platform 3. The slag discharge channel 10 is circular, and a slag collection plate 22 is fixedly installed inside the fixed platform 3. The vertical projection of the slag discharge channel 10 is completely on the slag collection plate 22.

[0067] The slag generated on the placement plate 4 can be directly brushed off. Under the action of the slag discharge channel 10, the slag will fall directly onto the surface of the slag collection plate 22 for unified collection.

[0068] It is worth noting that the slots that accommodate the bidirectional lead screw 6 and the connecting block 14 are all through slots, so the slag falling into the through slots will fall directly onto the slag collection plate 22 and will not affect the hygiene of the slots.

[0069] An installation ring 20 is fixedly installed on the rotating rod 18, and a cleaning brush 21 is fixedly installed on the installation ring 20. The cleaning brush 21 is in direct contact with the slag collection plate 22, and a slag discharge trough 23 is opened on the slag collection plate 22. A slag collection chamber 9 is slidably installed inside the fixed platform 3, and the slag collection chamber 9 is located directly below the slag discharge trough 23.

[0070] When the servo motor 17 is started, the rotating rod 18 will cause the mounting ring 20 to rotate. The cleaning brush 21 will directly contact the slag collection plate 22, so the cleaning brush 21 will drive the slag to move. The presence of the slag discharge trough 23 allows the slag to fall smoothly through the slag discharge trough 23 and then fall into the slag collection chamber 9 for collection. The slag collection chamber 9 is fitted with a handle for easy removal and cleaning.

[0071] Cleaning sleeves 12 are fixedly installed at both ends of the two lead screw nuts 11, and the cleaning sleeves 12 are in direct contact with the bidirectional lead screw 6.

[0072] When the lead screw nut 11 moves, the cleaning sleeve 12 can make pre-contact with the bidirectional lead screw 6, thereby cleaning the slag or debris attached to the bidirectional lead screw 6, so that it falls onto the surface of the slag collection plate 22 through the through groove, without affecting the normal operation of the lead screw nut 11.

[0073] The workflow of this invention is as follows: First, the object to be tested is placed on the placement plate 4, and the drive motor 5 is started, causing the bidirectional lead screw 6 to rotate. The rotation of the bidirectional lead screw 6 causes the two mounting plates 7 to move closer to each other, thereby pushing the object to be tested and completing the initial fixing of the object to be tested on the X-axis. At this time, the object to be tested can also move in the Y-axis direction, but the range of movement is limited.

[0074] Start the servo motor 17 to make the rotating rod 18 rotate. The rotation of the rotating rod 18 causes the transmission gear 19 to rotate synchronously. The two racks 16 will move closer to each other synchronously under the action of meshing relationship. Since the moving plate 8 is on the connecting block 14, it can drive the two moving plates 8 to move closer or further away synchronously, thereby achieving the purpose of clamping and limiting the object to be measured on the Y axis.

[0075] Once the Y-axis is in position, the device is activated, allowing the X-axis to complete its limiting action. Since the midpoint of the line connecting the two moving plates 8 and the two mounting plates 7 is always on the same plane as the center of the placement plate 4, when the object to be tested is simultaneously clamped by the mounting plate 7 and the moving plate 8, it is positioned precisely at the geometric center of the placement plate 4. After that, the pressure test can be performed.

[0076] The slots that accommodate the bidirectional lead screw 6 and the connecting block 14 are all through slots, so the slag falling into the through slots will fall directly onto the slag collection plate 22 and will not affect the hygiene of the slots.

[0077] When the servo motor 17 is started, the rotating rod 18 will cause the mounting ring 20 to rotate. The cleaning brush 21 will directly contact the slag collection plate 22, so the cleaning brush 21 will drive the slag to move. The presence of the slag discharge trough 23 allows the slag to fall smoothly through the slag discharge trough 23 and then fall into the slag collection chamber 9 for collection. The slag collection chamber 9 is fitted with a handle for easy removal and cleaning.

[0078] The intelligent control system of the present invention includes a machine vision module and a test object positioning and analysis module;

[0079] The machine vision module is used to capture external images of the object under test, and to identify the position, size, and shape of the object under test through image recognition algorithms; the position, size, and shape of the object under test are then labeled as visual information.

[0080] The test object positioning analysis module is used to receive visual information of the test object, and perform dynamic operation control analysis in the X-axis direction and Y-axis direction respectively in combination with the performance parameters of drive motor 5 and servo motor 17 to obtain the expected running time of drive motor 5 and servo motor 17 respectively; and perform compensation analysis to obtain the duration compensation coefficient of the expected running time of drive motor 5 and servo motor 17 respectively.

[0081] Upon receiving the positioning signal of the object under test, the drive motor 5 is started, and the expected running time of the drive motor 5 is dynamically adjusted according to the duration compensation coefficient to ensure that the object under test can be accurately moved to the predetermined position; at the same time, the servo motor 17 is driven, and the expected running time of the servo motor 17 is dynamically adjusted according to the duration compensation coefficient.

[0082] It should be noted that by dynamically adjusting the running time of drive motor 5 and servo motor 17, the test object can be accurately moved to the predetermined position in the X and Y axis directions, ensuring the consistency of each test and the repeatability of the results.

[0083] This invention also includes a test analysis module;

[0084] The test analysis module is used to collect test data of the test object in real time and perform stress test analysis, specifically:

[0085] Acquire test data; test data includes maximum pressure, yield pressure, elastic modulus, displacement, temperature, vibration, and angle.

[0086] The initial time is taken as the time when the pressure testing machine is used, and the current time is taken as the second time. The time range between the initial time and the second time is marked as the test time zone, and the acquisition time within the test time zone is marked as n.

[0087] Set the preset parameters for the test object, and calculate the difference between any parameter in the test data and its corresponding preset parameter to obtain the test difference U. Process the test differences of parameters within the test time zone by weighting the fluctuation value of the test difference calculated using the variance formula, the difference between the maximum and minimum test differences, and the test difference at the current time. Then, use the formula... The parameter evaluation value GF is obtained; where N represents the total number of collection times in the test time zone, nU represents the test difference at time n, u represents the mean of the test differences in the test time zone, Umax and Umin represent the maximum and minimum test differences in the test time zone, respectively, and a1, a2, and a3 represent the fluctuation value of the test difference, the difference between the maximum and minimum test differences, and the weight corresponding to the test difference at the current time, respectively.

[0088] The parameter evaluation values ​​of all parameters in the test data are normalized using the formula. The compressive strength C of the pressure test sample is obtained; where b represents the index of the parameter in the test data, and bGF represents the parameter evaluation value corresponding to parameter b. This represents the weight corresponding to the parameter evaluation value of parameter b.

[0089] In this invention, visual information of the object under test is received, and dynamic operation control analysis in the X-axis direction is performed in combination with the performance parameters of the drive motor 5 and the servo motor 17 to obtain the expected running time of the drive motor 5, specifically:

[0090] The position of the object under test placed on the placement plate 4 is obtained. The difference between the position of the edge line of the object under test in the X-axis direction and the position of the mounting plate 7 is calculated to obtain two moving distances, denoted as D1 and D2. The average of the two moving distances is calculated using the formula D=(D1+D2) / 2 to obtain the moving average D. The standard operating power P of the drive motor 5 and the angular velocity ω of its output shaft are obtained. The radius r of the output shaft of the drive motor 5 is obtained. The torque T of the drive motor 5 is calculated using the standard operating power of the drive motor 5, the angular velocity of its output shaft, and its radius, using the formula T=(P*9550) / (ω*2π*r). Where 9550 is the power conversion factor.

[0091] Obtain the weight F of the object to be measured;

[0092] Assuming that the force required for the mounting plate 7 to move the object under test is equal to the torque provided by the drive motor 5, the required time for the mounting plate 7 to move is calculated using the standard operating power P, weight F, and average movement value D of the drive motor 5, and marked as the expected running time t using the formula t=(D*F) / P.

[0093] In this invention, visual information of the object under test is received, and dynamic operation control analysis is performed in the X-axis direction in combination with the performance parameters of the drive motor 5 to obtain the expected running time of the drive motor 5; and compensation analysis is performed to obtain the duration compensation coefficient of the expected running time of the drive motor 5, specifically:

[0094] When the drive motor 5 is working, the working time of the drive motor 5 is taken as the initial time, and the time area between the initial time and the current time is marked as the drive time zone; the drive time zone is divided into several drive sub-time zones at equal intervals; the moving distance between the two mounting plates 7 in the drive sub-time zone is identified and the average value is calculated to obtain the spacing value S;

[0095] Using the standard operating power of drive motor 5, the weight of the object under test, and the drive time zone, the expected movement distance for each drive time zone is calculated using the formula d=(P*△t) / F and marked as the pre-distance value d; where △t=t2-t1, t2 and t1 represent the start and end times of the drive time zone, respectively.

[0096] The difference between the interval value of the driving time zone and the pre-interval value is calculated using the formula G=Sd to obtain the interval difference G; the interval difference value of each driving time zone is then normalized using the formula... The duration compensation coefficient H is obtained; where k represents the index of the drive time zone, kG represents the interval difference of the kth drive time zone, and f represents the weighting factor of the interval difference; the duration compensation coefficient is used to dynamically adjust the expected running time of the drive motor 5.

[0097] In this invention, it should be noted that the visual information of the object under test is received, and dynamic operation control analysis is performed in the Y-axis direction based on the performance parameters of the drive motor 5 and the servo motor 17 to obtain the expected running time of the servo motor 17; and a compensation analysis is performed to obtain the duration compensation coefficient of the expected running time of the servo motor 17. The principle of this dynamic control analysis in the Y-axis direction and its corresponding compensation analysis is the same as that of receiving the visual information of the object under test, and performing dynamic operation control analysis in the X-axis direction based on the performance parameters of the drive motor 5 to obtain the expected running time of the drive motor 5; and performing a compensation analysis to obtain the duration compensation coefficient of the expected running time of the drive motor 5. Therefore, it will not be elaborated in this invention.

[0098] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent control system for a pressure testing machine, characterized in that, The pressure testing machine includes a pressure testing machine body and an intelligent control system. The pressure testing machine body includes a control panel (1), a pressing part (2) and a fixed platform (3). The fixed platform (3) is characterized in that a placement plate (4) is fixedly installed inside the fixed platform (3). The placement plate (4) is rotatably mounted with a double-acting lead screw (6), and two lead screw nuts (11) are connected to the double-acting lead screw (6) by threads. Mounting plates (7) are fixedly mounted on both lead screw nuts (11). A drive motor (5) is set on the fixed platform (3), and the output end of the shaft of the drive motor (5) is fixedly connected to the center of one end of the double-acting lead screw (6). Moving plates (8) are slidably mounted on both mounting plates (7), and the moving plates (8) are perpendicular to the corresponding mounting plates (7). The fixed platform (3) is equipped with a servo motor (17). A rotating rod (18) is fixedly installed at the output end of the shaft of the servo motor (17). A transmission gear (19) is fixedly installed at the other end of the rotating rod (18). Two racks (16) are fixedly installed at the bottom of the placement plate (4). A connecting block (14) is fixedly installed on each of the two racks (16). A sliding groove (15) is opened on each of the two connecting blocks (14). The intelligent control system includes a machine vision module, a test object positioning and analysis module, and a test analysis module. The machine vision module is used to capture external images of the object under test, identify the external images using image recognition algorithms, obtain the position, size, and shape of the object under test, and mark the position, size, and shape of the object under test as visual information. The test object positioning analysis module is used to receive the visual information of the test object, and combine the performance parameters of the drive motor (5) and the servo motor (17) to perform dynamic operation control analysis in the X-axis direction and Y-axis direction respectively, and obtain the expected running time of the drive motor (5) and the servo motor (17) respectively, and perform compensation analysis to obtain the duration compensation coefficient of the expected running time of the drive motor (5) and the servo motor (17); when the positioning signal of the test object is received, the drive motor (5) is started first, and the expected running time of the drive motor (5) is dynamically adjusted according to the duration compensation coefficient to ensure that the test object can move accurately to the predetermined position in the X-axis direction; after the test object moves to the predetermined position in the X-axis direction, the servo motor (17) is driven again, and the expected running time of the servo motor (17) is dynamically adjusted according to the duration compensation coefficient to ensure that the test object can move accurately to the predetermined position in the Y-axis direction; The test analysis module is used to collect and analyze the pressure test data of the test object in real time. Specifically, it acquires test data, including maximum pressure, yield pressure, elastic modulus, displacement, temperature, vibration, and angle; it uses the time of use of the pressure testing machine as the initial time, the current time as the second time, marks the time zone between the initial and second times as the test time zone, and identifies the acquisition time number within the test time zone; it sets preset parameters for the test object, calculates the difference between any parameter in the test data and its corresponding preset parameter to obtain the test difference; it processes the test differences of parameters within the test time zone, weighting the fluctuation value of the test difference calculated using the variance formula, the difference between the maximum and minimum test differences, and the test difference at the current time to obtain the parameter evaluation value; and it normalizes the parameter evaluation values ​​of all parameters in the test data to obtain the compressive strength value of the test object.

2. The intelligent control system for a pressure testing machine according to claim 1, characterized in that, Both movable plates (8) have sliders (13) fixedly installed at their bottoms, and the sliders (13) can slide inside the corresponding grooves (15).

3. The intelligent control system for a pressure testing machine according to claim 1, characterized in that, A slag discharge channel (10) is provided on the fixed platform (3). The slag discharge channel (10) is circular, and a slag collection plate (22) is fixedly installed inside the fixed platform (3). The vertical projection of the slag discharge channel (10) is completely on the slag collection plate (22).

4. The intelligent control system for a pressure testing machine according to claim 1, characterized in that, An installation ring (20) is fixedly installed on the rotating rod (18), and a cleaning brush (21) is fixedly installed on the installation ring (20). The cleaning brush (21) is in direct contact with the slag collection plate (22), and a slag trough (23) is opened on the slag collection plate (22). A slag collection chamber (9) is slidably installed inside the fixed platform (3), and the slag collection chamber (9) is located directly below the slag trough (23).

5. The intelligent control system for a pressure testing machine according to claim 1, characterized in that, Cleaning sleeves (12) are fixedly installed at both ends of the two lead screw nuts (11), and the cleaning sleeves (12) are in direct contact with the bidirectional lead screw (6).

6. The intelligent control system for a pressure testing machine according to claim 1, characterized in that, The visual information of the object under test is received, and the dynamic operation control analysis in the X-axis direction is performed in combination with the performance parameters of the drive motor (5) and the servo motor (17) to obtain the expected running time of the drive motor (5), specifically: Obtain the position of the object to be tested on the placement plate (4), calculate the difference between the position of the edge line of the object to be tested in the X-axis direction and the position of the mounting plate (7) to obtain two moving distances; calculate the average of the two moving distances to obtain the moving average; obtain the standard operating power of the drive motor (5) and the angular velocity of its output shaft; Obtain the radius of the output shaft of the drive motor (5); calculate the torque of the drive motor (5) by using the standard operating power of the drive motor (5) and the angular velocity and radius of its output shaft; obtain the weight of the object to be measured; Assuming that the force required for the mounting plate (7) to move the object under test is equal to the torque provided by the drive motor (5), the time required for the mounting plate (7) to move is calculated by the standard operating power, weight and average movement of the drive motor (5) and marked as the expected running time.

7. The intelligent control system for a pressure testing machine according to claim 1, characterized in that, The visual information of the object under test is received, and dynamic operation control analysis is performed in the X-axis direction in combination with the performance parameters of the drive motor (5) to obtain the expected running time of the drive motor (5); and compensation analysis is performed to obtain the duration compensation coefficient of the expected running time of the drive motor (5), specifically: When the drive motor (5) is working, the working time of the drive motor (5) is taken as the initial time, and the time area between the initial time and the current time is marked as the drive time zone; the drive time zone is divided into several drive sub-time zones at equal intervals; Identify the moving distance between the two mounting plates (7) in the driving time zone and calculate the average value to obtain the distance value; Using the standard operating power of the drive motor (5), the weight of the object under test, and the drive time zone, calculate the expected movement distance for each drive time zone and mark it as the pre-distance value; The difference between the interval value of the driving time zone and the pre-interval value is calculated to obtain the interval difference; The interval difference of each driving time zone value is normalized to obtain the duration compensation coefficient; The duration compensation coefficient is used to dynamically adjust the expected running time of the drive motor (5).

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