A device and method for detecting the strength of a construction material

Abstract

The application relates to the technical field of building engineering material detection, and particularly discloses a building engineering material strength detection device and method, which comprises an installation platform, a test platform fixedly connected to the top of the installation platform, and a protective sleeve frame fixedly connected to the top of the installation platform. Through the arrangement of a first hydraulic rod, a mounting plate, a pressure sensor, an electric telescopic rod, an iron core ring, a connecting disc, a loading head, a negative magnetic attraction ring, a plug-in rod and a limiting hole, the first hydraulic rod drives the mounting plate to move up and down to transmit pressure, the pressure sensor monitors the applied pressure value in real time to ensure data accuracy, the electric telescopic rod is matched with the plug-in hole and the limiting hole to realize quick locking and releasing of the loading head, the iron core ring is adsorbed and fixed with the negative magnetic attraction ring after being electrified to ensure the stability of the loading head in the test process, and the connecting disc integrates multiple loading heads to adapt to different test requirements, so that the material strength detection effect is efficient, flexible and accurate.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building engineering material detection, and particularly relates to a building engineering material strength detection device and method. BACKGROUND

[0002] In the field of building engineering, material strength detection is a key link to ensure the safety and quality of engineering structures. With the continuous progress of building technology and the increasing requirements of engineering, higher requirements are put forward for the precision, efficiency and flexibility of building material strength detection. In recent years, the related technical field has made significant progress. From traditional destructive testing methods (such as core drilling method and rebound method), it gradually transits to non-destructive or micro-destructive testing technology, and combines with automation and intelligent control means to improve the accuracy and efficiency of detection.

[0003] Specifically, the traditional material strength detection method, such as the core drilling method, can directly obtain the actual strength information inside the material, but will cause irreversible damage to the measured material, and the detection process takes a long time, which is difficult to meet the needs of large-scale engineering detection. The rebound method and other non-destructive detection methods are simple to operate, but are affected by many factors such as material surface condition and detection angle, and the accuracy of the detection results has certain limitations. In addition, the detection device in the prior art often relies on manual operation in the selection and replacement of the loading head, which is not only low in efficiency, but also difficult to ensure the stability and positioning accuracy of the loading head in the testing process, thereby affecting the reliability of the detection data. Especially in the material strength detection under different environmental conditions (such as temperature change), the prior art is difficult to provide accurate and controllable environmental simulation means, which limits the comprehensiveness and accuracy of the detection, so it is necessary for the workers to improve it. SUMMARY

[0004] The purpose of the present application is to provide a building engineering material strength detection device and method to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A building engineering material strength detection device, comprising:

[0007] A mounting platform;

[0008] The top of the mounting platform is fixedly connected with a test platform, and the top of the mounting platform is fixedly connected with a protective sleeve frame, the inner top wall of the protective sleeve frame is fixedly connected with a positioning sleeve frame, and the bottom of the positioning sleeve frame is fixedly connected with a first hydraulic rod;

[0009] The bottom end of the first hydraulic rod is fixedly connected with a mounting plate, the inner wall of the mounting plate is fixedly connected with a pressure sensor, the bottom of the mounting plate is provided with a plug-in hole, the inner wall of the mounting plate is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod is plugged into the inner wall of the plug-in hole.

[0010] The upper side of the test platform is provided with a sleeve frame, the inner wall of the sleeve frame is rotatably connected with a connecting disc, the bottom of the connecting disc is fixedly connected with a placing sleeve around, the inner top wall of the connecting disc is plugged into the inner wall of the placing sleeve, the top of the connecting disc is fixedly connected with a loading head, the top of the loading head is fixedly connected with a fixed plate, the top of the fixed plate is fixedly connected with a negative magnetic attraction ring, the top of the negative magnetic attraction ring is adsorbed and connected to the bottom of the iron core ring, the top of the fixed plate is fixedly connected with a plug-in rod, the surface of the plug-in rod is provided with a limiting hole, and the surface of the plug-in rod is plugged into the inner wall of the plug-in hole.

[0011] The number of the loading head is four, and the four loading heads are metal conical head, metal flat head, rubber conical head and rubber flat head in turn.

[0012] Preferably, the top of the mounting platform is fixedly connected with an assembly rod on both sides, the top of one of the assembly rods is fixedly connected with a second hydraulic rod, and the output end of the second hydraulic rod is fixedly connected to one side of the sleeve frame, and the top of the other assembly rod is fixedly connected with a telescopic column on both sides, and the output ends of the two telescopic columns are fixedly connected to the other side of the sleeve frame.

[0013] Preferably, the surface of the sleeve frame is fixedly connected with a motor box, the inner wall of the motor box is fixedly connected with a servo motor, the output end of the servo motor is provided with a driving rod, the top of the driving rod is fixedly connected with a driving gear, the surface of the driving gear is meshed with a transmission gear, and the inner wall of the transmission gear is fixedly connected to the surface of the connecting disc.

[0014] Preferably, the inner wall of the mounting platform is fixedly connected with a heater on one side, the inner wall of the mounting platform is fixedly connected with a refrigerator on the other side, the output ends of the heater and the refrigerator are fixedly connected with a conveying pipe, and the inner wall of the conveying pipe is provided with a solenoid valve.

[0015] Preferably, the top of the conveying pipe is fixedly connected with a connecting pipeline, both ends of the connecting pipeline are fixedly connected with a collecting frame, the back of the collecting frame is fixedly connected to the surface of the assembly rod, the surface of the collecting frame is fixedly connected with a plurality of spray heads, and the spray heads are arranged above the test platform.

[0016] Preferably, the top of the test platform is slidably connected with a pressing plate on both sides, and the bottom of the pressing plate is fixedly connected with a positioning block.

[0017] Preferably, the inner wall of the mounting platform is fixedly connected with a group of first electric guide rails, the inner wall of the first electric guide rail is slidably connected with a sliding block, the top of the sliding block is fixedly connected to the bottom of the positioning block, and the surface of the mounting platform is fixedly connected with a control panel.

[0018] Preferably, the surface of the protective sleeve frame is fixedly connected with a second electric guide rail on both sides, the inner wall of the second electric guide rail is slidably connected with a moving block, and the back of the moving block is fixedly connected with a sealing door.

[0019] A building engineering material strength detection method, comprising the following steps:

[0020] S1, sample preparation and positioning: placing the material to be tested on the test platform, starting the first electric guide rail through the control panel, driving the pressing plate to slide along the test platform, and fixing the sample position through the pressing plate;

[0021] S2, loading head selection and installation: the control panel controls the servo motor to drive the driving gear and the transmission gear to mesh, rotates the connecting disc to the target loading head position, and retracts the electric telescopic rod to release the current loading head; the iron core ring is separated from the negative magnetic attraction ring by disconnecting the power supply, and the loading head is replaced and re-energized after the loading head is replaced; the plug-in rod is inserted into the plug-in hole of the mounting plate, and the output end of the electric telescopic rod is inserted into the limiting hole for locking;

[0022] S3, environmental condition simulation: set the temperature parameter through the control panel, start the heater or cooler, and the cold and hot medium is transported to the collection frame through the conveying pipe and the connecting pipeline, and is uniformly sprayed to the surface of the sample through the spray head;

[0023] S4, force detection: the first hydraulic rod drives the mounting plate to press down, and the pressure sensor monitors the pressure value in real time; if lateral pressure is needed, the second hydraulic rod and the telescopic column adjust the position of the sleeve frame, and the pressing plate applies lateral force through the first electric guide rail;

[0024] S5, data recording and analysis: the control panel collects the pressure sensor data, and generates a strength detection report in combination with the temperature parameter;

[0025] S6, end operation: after the test is completed, the sealing door is opened through the second electric guide rail, the sample is taken out, and the device is reset.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] (1) Through the setting of the first hydraulic rod, the mounting plate, the pressure sensor, the electric telescopic rod, the iron core ring, the connecting disc, the loading head, the negative magnetic attraction ring, the plug-in rod and the limiting hole, when in use, the first hydraulic rod drives the mounting plate to move up and down to transmit pressure, the pressure sensor monitors the applied pressure value in real time to ensure data accuracy, the electric telescopic rod cooperates with the plug-in hole and the limiting hole to realize quick locking and releasing of the loading head, the iron core ring is adsorbed and fixed with the negative magnetic attraction ring after being electrified to ensure the stability of the loading head in the test process, and the connecting disc integrates multiple loading heads to adapt to different test requirements, so that the material strength detection effect is efficient, flexible and accurate, and the operation convenience and data reliability are taken into account.

[0028] (2) Through the setting of the assembly rod, the second hydraulic rod, the telescopic column, the motor box, the servo motor, the drive rod, the drive gear and the transmission gear, when in use, the assembly rod is fixed on both sides of the mounting platform as a support frame, the second hydraulic rod pushes the sleeve frame to move horizontally to adapt to different test requirements, the telescopic column ensures the balance and stability of the sleeve frame during movement, the servo motor drives the connecting disc to rotate accurately through the meshing of the drive gear and the transmission gear, and the quick switching of the loading head is realized, so that the flexible adaptation effect of automatic operation and multi-angle test is realized, the efficiency of loading head positioning and the accuracy of force direction in the test process are improved, and the reliability and repeatability of detection data are further enhanced.

[0029] (3) Through the setting of the heater, the refrigerator, the conveying pipe, the electromagnetic valve, the connecting pipeline, the collection frame, the spray head, the pressurizing plate, the positioning block, the first electric guide rail, the sliding block, the control panel, the second electric guide rail, the moving block and the sealing door, when in use, the heater and the refrigerator uniformly spray cold and hot medium through the conveying pipe and the spray head to simulate material performance test under different temperature environments, the pressurizing plate is driven to slide by the electric guide rail to fix or laterally press the sample, the control panel integrates all electrical control functions to realize full-process automatic operation, and the sealing door is opened and closed by the second electric guide rail to protect the test environment and facilitate sample taking and placing, so that the comprehensive strength detection effect of building materials under different environmental conditions is realized, the comprehensiveness and accuracy of the test are significantly improved, and the operation convenience and safety are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is one of the perspective views of the application;

[0031] Figure 2 It is the second perspective view of the application;

[0032] Figure 3 It is a perspective view of the connecting disc of the application;

[0033] Figure 4 It is a perspective view of the sleeve frame of the application;

[0034] Figure 5 A perspective view of the loading head of the present application;

[0035] Figure 6 A perspective view of the spray head of the present application;

[0036] Figure 7 A perspective view of the first electric guide rail of the present application;

[0037] Figure 8 A perspective view of the heater of the present application;

[0038] In the figure: 1, mounting platform; 2, test platform; 3, protective sleeve frame; 4, positioning sleeve frame; 5, first hydraulic rod; 6, mounting plate; 7, pressure sensor; 8, electric telescopic rod; 9, iron core ring; 10, power connector; 11, wire; 12, sleeve frame; 13, connecting disc; 14, placement sleeve; 15, loading head; 16, fixed plate; 17, negative magnetic attraction ring; 18, plug-in rod; 19, limiting hole; 20, assembly rod; 21, second hydraulic rod; 22, telescopic column; 23, motor box; 24, servo motor; 25, drive rod; 26, drive gear; 27, transmission gear; 28, heater; 29, refrigerator; 30, conveying pipe; 31, electromagnetic valve; 32, connecting pipeline; 33, collection frame; 34, spray head; 35, pressurizing plate; 36, positioning block; 37, first electric guide rail; 38, sliding block; 39, control panel; 40, second electric guide rail; 41, moving block; 42, sealing door. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Embodiment one:

[0041] Please refer to Figures 1 to 8 the figure, a construction engineering material strength detection device, comprising: a mounting platform 1;

[0042] The top of the mounting platform 1 is fixedly connected with a test platform 2, and the top of the mounting platform 1 is fixedly connected with a protective sleeve frame 3, the inner top wall of the protective sleeve frame 3 is fixedly connected with a positioning sleeve frame 4, and the bottom of the positioning sleeve frame 4 is fixedly connected with a first hydraulic rod 5;

[0043] The bottom end of the first hydraulic rod 5 is fixedly connected with a mounting plate 6, the inner wall of the mounting plate 6 is fixedly connected with a pressure sensor 7, the bottom of the mounting plate 6 is provided with a plug-in hole, the inner wall of the mounting plate 6 is fixedly connected with an electric telescopic rod 8, and the output end of the electric telescopic rod 8 is plugged into the inner wall of the plug-in hole, the bottom of the mounting plate 6 is fixedly connected with an iron core ring 9, the inner wall of the mounting plate 6 is fixedly connected with an electric connector 10, the output end of the electric connector 10 is electrically connected with a wire 11, and the wire 11 and the iron core ring 9 are electrically connected with each other;

[0044] The upper side of the test platform 2 is provided with a sleeving frame 12, the inner wall of the sleeving frame 12 is rotatably connected with a connecting disc 13, the bottom of the connecting disc 13 is fixedly connected with a placing sleeve 14 around, the inner top wall of the connecting disc 13 is plugged into the inner wall of the placing sleeve 14 with a loading head 15, the top end of the loading head 15 is fixedly connected with a fixed plate 16, the top of the fixed plate 16 is fixedly connected with a negative magnetic ring 17, and the top of the negative magnetic ring 17 is adsorbed and connected to the bottom of the iron core ring 9, the top of the fixed plate 16 is fixedly connected with a plug-in rod 18, the surface of the plug-in rod 18 is provided with a limiting hole 19, and the surface of the plug-in rod 18 is plugged into the inner wall of the plug-in hole, and the output end of the electric telescopic rod 8 is plugged into the inner wall of the limiting hole 19;

[0045] The number of the loading head 15 is four, and the four loading heads 15 are a metal conical head, a metal flat head, a rubber conical head and a rubber flat head in turn.

[0046] In use, the installation platform 1 is used as a base support, the top fixedly connected test platform 2 is used for placing materials to be tested, and the protective sleeve frame 3 provides safety protection and structural stability. The positioning sleeve frame 4 at the top of the inside of the protective sleeve frame 3 fixes the first hydraulic rod 5, the first hydraulic rod 5 drives the embedded installation plate 6 below to move up and down, thereby transmitting pressure, the embedded pressure sensor 7 in the installation plate 6 monitors the applied pressure value in real time, ensuring data accuracy; the plug-in hole at the bottom cooperates with the electric telescopic rod 8, the output end of the electric telescopic rod 8 is inserted into the plug-in hole and the limiting hole 19 of the plug-in rod 18, the loading head 15 is quickly locked and released, the iron core ring 9 at the bottom of the installation plate 6 and the electric connector 10 form an electromagnetic field through the wire 11 after being electrified, and are adsorbed and fixed with the negative magnetic attraction ring 17 at the top of the loading head 15, ensuring the stability of the loading head 15 during the test process. The sleeve connection frame 12 above the test platform 2 integrates multiple placement sleeves 14 through the internally rotatable connecting disc 13, each sleeve can plug in different types of loading heads 15 (such as metal conical heads, metal flat heads, etc.), and different loading heads 15 are switched through the rotation of the connecting disc 13 to adapt to diversified test requirements. The fixed plate 16 at the top of the loading head 15 not only connects the negative magnetic attraction ring 17, but also fixes the plug-in rod 18, after the plug-in rod 18 is inserted into the plug-in hole of the installation plate 6, the limiting hole 19 is locked by the electric telescopic rod 8, forming a rigid connection, realizing the quick replacement, accurate positioning and stable pressure of the loading head 15, and at the same time, the pressure value is fed back in real time through the pressure sensor 7, combined with the accurate control of the first hydraulic rod 5, the multi-dimensional detection of the material's compression resistance, bending resistance and other strengths is completed. The overall design takes into account efficiency, flexibility and data reliability.

[0047] Embodiment two:

[0048] Please refer to Figures 1 to 8 As shown in the figure, the top of the installation platform 1 is fixedly connected with two assembly rods 20, one end of the second hydraulic rod 21 is fixedly connected to one side of the sleeve connection frame 12, the top of the other assembly rod 20 is fixedly connected with two telescopic columns 22, the output ends of the two telescopic columns 22 are fixedly connected to the other side of the sleeve connection frame 12, the surface of the sleeve connection frame 12 is fixedly connected with a motor box 23, the inner wall of the motor box 23 is fixedly connected with a servo motor 24, the output end of the servo motor 24 is installed with a drive rod 25, the top of the drive rod 25 is fixedly connected with a drive gear 26, the surface of the drive gear 26 is meshingly connected with a transmission gear 27, and the inner wall of the transmission gear 27 is fixedly connected to the surface of the connecting disc 13.

[0049] In use, the assembly rods 20 are fixed on both sides of the mounting platform 1 as a support frame, one end of the assembly rod 20 on one side is provided with the second hydraulic rod 21, and the telescopic movement of the second hydraulic rod 21 drives the sleeve frame 12 to move horizontally to adapt to different test requirements; the assembly rod 20 on the other side is connected with the telescopic column 22, which cooperates with the second hydraulic rod 21 to ensure that the sleeve frame 12 remains balanced and stable during movement, the servo motor 24 embedded in the motor box 23 drives the drive gear 26 to rotate through the drive rod 25 at the output end, and the drive gear 26 is engaged with the transmission gear 27 fixed on the surface of the connecting disc 13, thereby driving the connecting disc 13 to rotate accurately. This gear transmission system enables the four loading heads 15 to be quickly switched to meet the needs of different test scenarios (such as conical pressing and planar pressing). The high-precision control of the servo motor 24 in combination with the linkage adjustment of the second hydraulic rod 21 and the telescopic column 22 not only improves the positioning efficiency of the loading head 15, but also ensures the accuracy of the force direction during testing, further enhancing the reliability and repeatability of the test data, and achieving automatic operation and flexible adaptation of multi-angle testing.

[0050] Embodiment three:

[0051] Please refer to Figures 1 to 8 As shown in the figure, the inner wall of the mounting platform 1 is fixedly connected with a heater 28 on one side, and a refrigerator 29 on the other side, the output ends of the heater 28 and the refrigerator 29 are fixedly connected with a conveying pipe 30, the inner wall of the conveying pipe 30 is provided with an electromagnetic valve 31, the top end of the conveying pipe 30 is fixedly connected with a connecting pipe 32, both ends of the connecting pipe 32 are fixedly connected with a collection frame 33, the back surface of the collection frame 33 is fixedly connected to the surface of the assembly rod 20, the surface of the collection frame 33 is fixedly connected with a plurality of spray heads 34, the spray heads 34 are arranged above the test platform 2, both sides of the top of the test platform 2 are slidably connected with a pressing plate 35, the bottom of the pressing plate 35 is fixedly connected with a positioning block 36, the inner wall of the mounting platform 1 is fixedly connected with a group of first electric guide rails 37, the inner wall of the first electric guide rails 37 is slidably connected with a sliding block 38, the top of the sliding block 38 is fixedly connected to the bottom of the positioning block 36, the surface of the mounting platform 1 is fixedly connected with a control panel 39, both sides of the surface of the protective sleeve frame 3 are fixedly connected with second electric guide rails 40, the inner wall of the second electric guide rails 40 is slidably connected with a moving block 41, the back surface of the moving block 41 is fixedly connected with a sealing door 42.

[0052] In use, the device can simulate material strength testing under different temperature environments, the heater 28 and the refrigerator 29 deliver cold and hot medium to the connecting pipe 32 through the conveying pipe 30, and the flow is accurately controlled by the electromagnetic valve 31, the connecting pipe 32 is connected with the collecting frame 33 at both ends, the surface-mounted spray head 34 can uniformly spray cold and hot medium on the surface of the material on the test platform 2, so as to realize the performance evaluation of the material under extreme temperature conditions, the pressing plate 35 is connected with the sliding block 38 on the first electric guide rail 37 through the positioning block 36 at the bottom, and is driven to slide along the test platform 2 by the first electric guide rail 37, for fixing or laterally pressing the measured material, to ensure that it remains stable during the test, the control panel 39 integrates all electrical control functions, users can adjust temperature, pressure, loading speed and other parameters through it to realize full-process automatic operation, the second electric guide rail 40 is installed on the surface of the protective sleeve frame 3, and the moving block 41 on the second electric guide rail 40 drives the sealing door 42 to open and close, which not only protects the test process from external interference, but also facilitates the operator to quickly take and place samples, the whole system realizes the comprehensive strength detection of building materials under different environmental conditions through the combination of temperature regulation, mechanical pressing and intelligent control, and significantly improves the comprehensiveness and accuracy of the test.

[0053] Embodiment four:

[0054] Please refer to Figures 1 to 8 The building engineering material strength detection method comprises the following steps:

[0055] S1, sample preparation and positioning: place the material to be tested on the test platform 2, start the first electric guide rail 37 through the control panel 39, drive the pressing plate 35 to slide along the test platform 2, and fix the sample position through the pressing plate 35;

[0056] S2, loading head 15 selection and installation: control the servo motor 24 to drive the driving gear 26 and the transmission gear 27 to engage through the control panel 39, rotate the connecting disc 13 to the target loading head 15 position, and retract the electric telescopic rod 8 to release the current loading head 15; the electric connector 10 is powered off to separate the iron core ring 9 from the negative magnetic attraction ring 17, and is powered on again after replacing the loading head 15 to be adsorbed, the plug-in rod 18 is inserted into the plug-in hole of the mounting plate 6, and the output end of the electric telescopic rod 8 is inserted into the limiting hole 19 for locking;

[0057] S3, environmental condition simulation: set the temperature parameters through the control panel 39, start the heater 28 or the refrigerator 29, and uniformly spray the cold and hot medium on the sample surface through the spray head 34 after the cold and hot medium is delivered to the collecting frame 33 through the conveying pipe 30 and the connecting pipe 32;

[0058] S4, force detection: the first hydraulic rod 5 drives the mounting plate 6 to press down, and the pressure sensor 7 monitors the pressure value in real time; if lateral pressure is needed, the second hydraulic rod 21 and the telescopic column 22 adjust the position of the sleeve frame 12, and the pressing plate 35 applies lateral force through the first electric guide rail 37;

[0059] S5, data recording and analysis: the control panel 39 collects the data of the pressure sensor 7, and generates a strength detection report in combination with the temperature parameter;

[0060] S6, end operation: after the test is completed, the sealing door 42 is opened by the second electric guide rail 40, the sample is taken out, and the device is reset.

[0061] Example five:

[0062] Please refer to Figures 1 to 8 As shown in the figure, the commercial complex project needs to conduct strength acceptance of the C60 high-strength concrete used by the main structure during the construction process. In order to ensure that the performance of the concrete meets the standard under different working conditions (such as temperature change and multi-directional stress), the traditional detection method (such as rebound method and core drilling method) cannot meet the multi-dimensional and high-precision test requirements. The building engineering material strength detection device and method described in the application realize the integrated detection of the compressive strength, the bending strength and the temperature adaptability of the concrete test block.

[0063] The C60 concrete test block (150mmx150mmx150mm) of standard curing for 28 days is taken from the construction site and placed at the center position of the test platform 2.

[0064] The first electric guide rail 37 is started through the control panel 39, the two sides of the pressing plate 35 are driven to slide along the test platform 2, the test block is clamped and fixed through the pressing plate 35, and it is ensured that the test block is horizontal and has no deviation.

[0065] Compressive strength test: a metal flat head (one of the four loading heads 15) is selected for vertical pressure. Through the input instruction of the control panel 39, the servo motor 24 drives the driving gear 26 to mesh with the transmission gear 27, rotates the connecting disc 13 to the position of the metal flat head.

[0066] Quick switching: the electric telescopic rod 8 is retracted to release the current loading head 15, the power supply 10 is powered off to separate the iron core ring 9 from the negative magnetic attraction ring 17; after replacing the loading head 15, the power supply is reconnected for adsorption, the plug-in rod 18 is inserted into the plug-in hole of the mounting plate 6, and the output end of the electric telescopic rod 8 is inserted into the limiting hole 19 to complete the locking.

[0067] Simulation of summer high temperature (60℃) working condition: set the target temperature of the heater 28 through the control panel 39, open the electromagnetic valve 31, hot air is transported to the collection frame 33 through the delivery pipe 30 and the connecting pipe 32, and is uniformly sprayed to the surface of the test block through the spray head 34, so that the overall temperature of the test block reaches the standard for 10 minutes.

[0068] Vertical compression: The first hydraulic cylinder 5 drives the mounting plate 6 to press down at a speed of 2 mm / min, and the pressure sensor 7 records the pressure value in real time until the test block cracks. The peak pressure is 2850 kN, and the system automatically converts the compressive strength to 126.7 MPa (consistent with the C60 standard).

[0069] Lateral bending test: Switch to the rubber cone head, the second hydraulic cylinder 21 pushes the sleeve frame 12 to adjust the position of the loading head 15, and the pressing plate 35 applies lateral force through the first electric guide rail 37. The measured bending strength is 8.5 MPa.

[0070] Switch the refrigerator 29 to simulate a low temperature of -10°C, and the spray head 34 sprays cold medium. Repeat the compression test to confirm that the strength decay rate of the concrete at low temperature is less than 5%.

[0071] The control panel 39 automatically integrates temperature and pressure data to generate a test report containing stress-strain curves and temperature effects.

[0072] After the test is completed, the sealing door 42 is opened by the second electric guide rail 40, the test block debris is removed, and the device automatically resets to standby state.

[0073] Working principle: The installation platform 1 is the basic support structure, the test platform 2 is fixed on it for placing the material to be tested, and the protective sleeve frame 3 provides safety protection and overall stability. During testing, first start the first electric guide rail 37 through the control panel 39 to drive the pressing plate 35 to slide to clamp and fix the sample, ensuring its position accurate and no deviation. The selection and installation of the loading head 15 are realized by the servo motor 24 driving the gear system, after the connecting disc 13 rotates to the target loading head 15 (such as metal conical head, flat head or rubber head) position, the electric telescopic rod 8 retracts to release the current loading head 15, the iron core ring 9 is powered off and separated from the negative magnetic attraction ring 17, after replacing the new loading head 15, it is re-powered and adsorbed, the plug-in rod 18 is inserted into the plug-in hole of the mounting plate 6 and locked in the limiting hole 19 by the electric telescopic rod 8, forming a rigid connection. The device can simulate different environmental conditions, the heater 28 or the refrigerator 29 uniformly sprays cold and hot medium to the sample surface through the conveying pipe 30 and the spray head 34, to test the performance of the material under extreme temperature. In the force detection stage, the first hydraulic rod 5 drives the mounting plate 6 to press down, and the pressure sensor 7 monitors the vertical pressure in real time; if lateral pressure is needed, the second hydraulic rod 21 and the telescopic column 22 adjust the position of the sleeve frame 12, and the pressing plate 35 applies lateral force through the first electric guide rail 37 to realize multidimensional stress test. During the test process, the control panel 39 collects pressure data in real time and combines with temperature parameters to automatically generate strength detection report. The sealing door 42 is opened and closed by the second electric guide rail 40, which is convenient for sample taking and placing and protects the test environment. The whole device realizes comprehensive, efficient and accurate detection of the strength of building materials such as compression resistance, bending resistance and bending resistance through the synergistic effect of hydraulic system, electromagnetic adsorption, gear transmission, temperature regulation and intelligent control, and supports performance evaluation under different environmental conditions, which significantly improves the flexibility and reliability of the detection.

[0074] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A strength testing device for building materials, characterized in that, Include: The installation platform (1); The top of the installation platform (1) is fixedly connected with a test platform (2), the top of the installation platform (1) is fixedly connected with a protective sleeve frame (3), the inner top wall of the protective sleeve frame (3) is fixedly connected with a positioning sleeve frame (4), and the bottom of the positioning sleeve frame (4) is fixedly connected with a first hydraulic rod (5); The bottom end of the first hydraulic rod (5) is fixedly connected with a mounting plate (6), the inner wall of the mounting plate (6) is fixedly connected with a pressure sensor (7), the bottom of the mounting plate (6) is provided with a plug-in hole, the inner wall of the mounting plate (6) is fixedly connected with an electric telescopic rod (8), and the output end of the electric telescopic rod (8) is plugged into the inner wall of the plug-in hole, the bottom of the mounting plate (6) is fixedly connected with an iron core ring (9), the inner wall of the mounting plate (6) is fixedly connected with an electric connector (10), the output end of the electric connector (10) is electrically connected with a wire (11), and the wire (11) and the iron core ring (9) are electrically connected with each other; The top of the test platform (2) is provided with a sleeve frame (12), the inner wall of the sleeve frame (12) is rotatably connected with a connecting disc (13), the bottom of the connecting disc (13) is fixedly connected with a placing sleeve (14) around, the inner top wall of the connecting disc (13) is plugged into the inner wall of the placing sleeve (14) with a loading head (15), the top end of the loading head (15) is fixedly connected with a fixed plate (16), the top of the fixed plate (16) is fixedly connected with a negative magnetic ring (17), and the top of the negative magnetic ring (17) is adsorbed and connected to the bottom of the iron core ring (9), the top of the fixed plate (16) is fixedly connected with a plug-in rod (18), the surface of the plug-in rod (18) is provided with a limiting hole (19), and the surface of the plug-in rod (18) is plugged into the inner wall of the plug-in hole, and the output end of the electric telescopic rod (8) is plugged into the inner wall of the limiting hole (19); The number of the loading head (15) is four, and the four loading heads (15) are metal conical head, metal flat head, rubber conical head and rubber flat head in turn; The top of the installation platform (1) is fixedly connected with an assembly rod (20) on both sides, the top end of one of the assembly rods (20) is fixedly connected with a second hydraulic rod (21), and the output end of the second hydraulic rod (21) is fixedly connected to one side of the sleeve frame (12), the top end of the other assembly rod (20) is fixedly connected with a telescopic column (22) on both sides, and the output ends of the two telescopic columns (22) are fixedly connected to the other side of the sleeve frame (12); The surface of the sleeve frame (12) is fixedly connected with a motor box (23), the inner wall of the motor box (23) is fixedly connected with a servo motor (24), the output end of the servo motor (24) is provided with a driving rod (25), the top end of the driving rod (25) is fixedly connected with a driving gear (26), the surface of the driving gear (26) is meshed with a transmission gear (27), and the inner wall of the transmission gear (27) is fixedly connected to the surface of the connecting disc (13).

2. The construction material strength detection device according to claim 1, wherein: The inner wall of the mounting platform (1) is fixedly connected with a heater (28), and the other side of the inner wall of the mounting platform (1) is fixedly connected with a refrigerator (29), and the output ends of the heater (28) and the refrigerator (29) are fixedly connected with a conveying pipe (30), and the inner wall of the conveying pipe (30) is provided with an electromagnetic valve (31).

3. A construction material strength detection device according to claim 2, characterized in that: The top end of the conveying pipe (30) is fixedly connected with a connecting pipeline (32), both ends of the connecting pipeline (32) are fixedly connected with a collecting frame (33), and the back surface of the collecting frame (33) is fixedly connected to the surface of the assembly rod (20), and the surface of the collecting frame (33) is fixedly connected with a plurality of spray heads (34), and the spray heads (34) are arranged above the test platform (2).

4. The construction material strength detection device of claim 1, wherein: The top of the test platform (2) is slidably connected with a pressurizing plate (35), and the bottom of the pressurizing plate (35) is fixedly connected with a positioning block (36).

5. The construction material strength detection device of claim 1, wherein: The inner wall of the mounting platform (1) is fixedly connected with a first electric guide rail (37), the inner wall of the first electric guide rail (37) is slidably connected with a sliding block (38), and the top of the sliding block (38) is fixedly connected to the bottom of the positioning block (36), and the surface of the mounting platform (1) is fixedly connected with a control panel (39).

6. The construction material strength detection device of claim 1, wherein: The surface of the protective sleeve frame (3) is fixedly connected with a second electric guide rail (40) on both sides, the inner wall of the second electric guide rail (40) is slidably connected with a moving block (41), and the back surface of the moving block (41) is fixedly connected with a sealing door (42).

7. A method for detecting the strength of construction engineering material, which is suitable for the construction engineering material strength detection device according to any one of claims 1 to 6, characterized in that, The steps include: S1, sample preparation and positioning: place the material to be tested on the test platform (2), start the first electric guide rail (37) through the control panel (39), drive the pressurizing plate (35) to slide along the test platform (2), and fix the sample position through the pressurizing plate (35); S2, load head selection and installation: control the servo motor (24) to drive the drive gear (26) and the transmission gear (27) to engage through the control panel (39), rotate the connecting disc (13) to the target load head (15) position, and retract the electric telescopic rod (8) to release the current load head (15); disconnect the power of the electric connector (10) to separate the iron core ring (9) and the negative magnetic attraction ring (17), and re-energize after replacing the load head (15) to attract, the plug-in rod (18) is inserted into the plug-in hole of the mounting plate (6), and the output end of the electric telescopic rod (8) is inserted into the limiting hole (19) for locking; S3, environmental condition simulation: set the temperature parameters through the control panel (39), start the heater (28) or the refrigerator (29), and the cold and hot medium is conveyed to the collecting frame (33) through the conveying pipe (30) and the connecting pipeline (32), and is uniformly sprayed to the surface of the sample by the spray head (34); S4, force detection: the first hydraulic rod (5) drives the mounting plate (6) to press down, and the pressure sensor (7) monitors the force value in real time; if lateral pressure is needed, the second hydraulic rod (21) and the telescopic column (22) adjust the position of the sleeve frame (12), and the pressurizing plate (35) applies lateral force through the first electric guide rail (37); S5, data recording and analysis: the control panel (39) collects pressure sensor data, combines temperature parameters to generate strength test reports; S6, end operation: after the test is completed, the sealing door (42) is opened through the second electric guide rail (40), the sample is taken out and the device is reset.

Images