Device and method for detecting strength of constructional engineering material

Abstract

The invention relates to the technical field of constructional engineering material detection, and particularly discloses a constructional engineering material strength detection device and method.The constructional engineering material strength detection device comprises a mounting platform, 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; through arrangement of the first hydraulic rod, the mounting plate, a pressure sensor, an electric telescopic rod, an iron core ring, a connecting disc, a loading head, a negative pole magnetic suction ring, an inserting rod and a limiting hole, during use, the first hydraulic rod drives the mounting plate to move up and down to transmit pressure, and the pressure sensor monitors an applied pressure value in real time to ensure data accuracy; the electric telescopic rod is matched with the inserting hole and the limiting hole to achieve rapid locking and releasing of the loading heads, the iron core ring is attracted and fixed to the negative magnetic attraction ring after being powered on, the stability of the loading heads in the testing process is ensured, the multiple loading heads are integrated on the connecting disc to meet different testing requirements, and therefore the efficient, flexible and accurate material strength detection effect is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction material detection, and in particular relates to a construction material strength detection device and method. Background Art

[0002] In the field of construction engineering, material strength testing is a key link in ensuring the safety and quality of engineering structures. With the continuous advancement of construction technology and the increasing requirements of engineering projects, higher requirements are placed on the accuracy, efficiency and flexibility of building material strength testing. In recent years, significant progress has been made in related technical fields, gradually transitioning from traditional destructive testing methods (such as core drilling and rebound methods) to non-destructive or micro-destructive testing technologies, while combining automation and intelligent control methods to improve the accuracy and efficiency of testing.

[0003] Specifically, traditional material strength testing methods, such as the core drilling method, can directly obtain the actual strength information inside the material, but will cause irreversible damage to the material being tested, and the testing process is time-consuming, which is difficult to meet the needs of large-scale engineering testing. Non-destructive testing methods such as the rebound method are easy to operate, but are affected by various factors such as the surface condition of the material and the testing angle, and the accuracy of the test results is limited. In addition, the testing devices in the existing technology often rely on manual operation for the selection and replacement of the loading head, which is not only inefficient, but also difficult to ensure the stability and positioning accuracy of the loading head during the test, thereby affecting the reliability of the test data. In particular, when it is necessary to simulate material strength testing under different environmental conditions (such as temperature changes), the existing technology is difficult to provide accurate and controllable environmental simulation means, which limits the comprehensiveness and accuracy of the test, and therefore requires staff to improve it. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and method for detecting the strength of construction materials to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A construction material strength detection device, comprising: Installation platform; The top of the mounting platform is fixedly connected to a test platform, the top of the mounting platform is fixedly connected to a protective sleeve frame, the inner top wall of the protective sleeve frame is fixedly connected to a positioning sleeve frame, and the bottom of the positioning sleeve frame is fixedly connected to a first hydraulic rod; The bottom end of the first hydraulic rod is fixedly connected to a mounting plate, the inner wall of the mounting plate is fixedly connected to a pressure sensor, the bottom of the mounting plate is provided with a plug hole, the inner wall of the mounting plate is fixedly connected to an electric telescopic rod, and the output end of the electric telescopic rod is plugged into the inner wall of the plug hole, the bottom of the mounting plate is fixedly connected to an iron core ring, the inner wall of the mounting plate is fixedly connected to an electrical connector, the output end of the electrical connector is electrically connected to a wire, and the wire and the iron core ring are electrically connected to each other; A socket frame is provided above the test platform, and the inner wall of the socket frame is rotatably connected to a connecting disk, and a placement sleeve is fixedly connected to the four sides of the bottom of the connecting disk, and the inner top wall of the connecting disk is located at the inner wall of the placement sleeve and is plugged with a loading head, and the top of the loading head is fixedly connected to a fixing plate, and the top of the fixing plate is fixedly connected to a negative magnetic ring, and the top of the negative magnetic ring is adsorbed and connected to the bottom of the iron core ring, and the top of the fixing plate is fixedly connected to a plug-in rod, and a limiting hole is provided on the surface of the plug-in rod, and the surface of the plug-in rod is plugged into the inner wall of the plug-in hole, and the output end of the electric telescopic rod is plugged into the inner wall of the limiting hole; The number of the loading heads is four, and the four loading heads are a metal conical head, a metal flat head, a rubber conical head and a rubber flat head in sequence.

[0006] Preferably, both sides of the top of the mounting platform are fixedly connected to assembly rods, the top of one of the assembly rods is fixedly connected to 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 to telescopic columns on both sides, and the output ends of the two telescopic columns are fixedly connected to the other side of the sleeve frame.

[0007] Preferably, the surface of the sleeve frame is fixedly connected to a motor box, the inner wall of the motor box is fixedly connected to a servo motor, the output end of the servo motor is installed with a driving rod, the top end of the driving rod is fixedly connected to 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 plate.

[0008] Preferably, a heater is fixedly connected to one side of the inner wall of the mounting platform, and a refrigerator is fixedly connected to the other side of the inner wall of the mounting platform. The output ends of the heater and the refrigerator are fixedly connected to a delivery pipe, and a solenoid valve is installed on the inner wall of the delivery pipe.

[0009] Preferably, the top of the delivery pipe is fixedly connected to a connecting pipe, both ends of the connecting pipe are fixedly connected to a collection frame, and the back of the collection frame is fixedly connected to the surface of the assembly rod, and the surface of the collection frame is fixedly connected to multiple groups of nozzles, and the nozzles are arranged above the test platform.

[0010] Preferably, both sides of the top of the test platform are slidably connected with a pressure plate, and the bottom of the pressure plate is fixedly connected with a positioning block.

[0011] Preferably, a group of first electric guide rails are fixedly connected to the inner wall of the mounting platform, a sliding block is slidably connected to the inner wall of the first electric guide rail, and the top of the sliding block is fixedly connected to the bottom of the positioning block, and a control panel is fixedly connected to the surface of the mounting platform.

[0012] Preferably, both sides of the surface of the protective sleeve frame are fixedly connected with second electric guide rails, 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.

[0013] A method for testing the strength of construction materials comprises the following steps: S1. Sample preparation and positioning: Place the material to be tested on the test platform, activate the first electric guide rail through the control panel, drive the pressure plate to slide along the test platform, and fix the position of the sample through the pressure plate; S2. Loading head selection and installation: Use the control panel to control the servo motor to drive the drive gear to mesh with the transmission gear. Rotate the connecting plate to the target loading head position, and the electric telescopic rod retracts to release the current loading head. Turn off the power to the electrical connector to separate the core ring from the negative magnetic ring. After replacing the loading head, turn on the power again to attract it. Insert the plug rod into the plug hole of the mounting plate, and insert the output end of the electric telescopic rod into the limit hole to lock it. S3. Environmental condition simulation: Set the temperature parameters through the control panel, start the heater or refrigerator, and deliver the hot and cold media to the collection frame through the delivery pipe and connecting pipes, and then spray them evenly onto the sample surface through the nozzle; S4. Force detection: The first hydraulic rod drives the mounting plate downward, and the pressure sensor monitors the pressure value in real time. If lateral pressure is required, the second hydraulic rod and the telescopic column adjust the position of the sleeve frame, and the pressure plate applies lateral force through the first electric guide rail. S5. Data recording and analysis: The control panel collects pressure sensor data and generates a strength test report based on temperature parameters; S6. End operation: After the test is completed, the sealed door is opened by the second electric guide rail, the sample is taken out and the device is reset.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) Through the arrangement of the first hydraulic rod, the mounting plate, the pressure sensor, the electric telescopic rod, the iron core ring, the connecting plate, the loading head, the negative magnetic ring, the plug rod and the limit 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 the accuracy of the data, the electric telescopic rod cooperates with the plug hole and the limit hole to realize the rapid locking and release of the loading head, the iron core ring is adsorbed and fixed with the negative magnetic ring after being energized, ensuring the stability of the loading head during the test, and the connecting plate integrates multiple loading heads to adapt to different test requirements, thereby achieving an efficient, flexible and accurate material strength detection effect, while taking into account the convenience of operation and the reliability of data.

[0015] (2) Through the arrangement 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 installation platform as a support frame, the second hydraulic rod pushes the sleeve frame to move horizontally to adapt to the test requirements of different sizes, the telescopic column ensures the balance and stability of the sleeve frame during movement, and the servo motor drives the connecting disk to rotate precisely through the engagement of the drive gear and the transmission gear, thereby realizing rapid switching of the loading head, thereby achieving a flexible adaptation effect of automated operation and multi-angle testing, while improving the efficiency of loading head positioning and the accuracy of force direction during the test, further enhancing the reliability and repeatability of the test data.

[0016] (3) Through the setting of heater, cooler, delivery pipe, solenoid valve, connecting pipe, collection frame, nozzle, pressure plate, positioning block, first electric guide rail, sliding block, control panel, second electric guide rail, moving block and sealing door, when in use, the heater and cooler evenly spray hot and cold media through the delivery pipe and nozzle to simulate the material performance test under different temperature environments. The pressure plate is driven to slide by the electric guide rail to fix or laterally pressurize the sample. The control panel integrates all electrical control functions to realize full-process automated operation. The sealing door is opened and closed by the second electric guide rail to protect the test environment and facilitate the sample to be taken and placed, thereby achieving the comprehensive strength test effect of building materials under different environmental conditions, significantly improving the comprehensiveness and accuracy of the test, and enhancing the convenience and safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is one of the three-dimensional diagrams of the present invention; Figure 2 This is the second stereogram of the present invention; Figure 3 A perspective view of the connection disk of the present invention; Figure 4 A three-dimensional diagram of the sleeve frame of the present invention; Figure 5 A perspective view of a loading head according to the present invention; Figure 6 A perspective view of the nozzle of the present invention; Figure 7 is a perspective view of the first electric guide rail of the present invention; Figure 8 is a perspective view of the heater of the present invention; Figure: 1, installation 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, core ring; 10, electrical connection; 11, wire; 12, sleeve frame; 13, connecting plate; 14, placement sleeve; 15, loading head; 16, fixing plate; 17, negative magnetic ring; 18, plug rod; 19, limit hole; 20, assembly rod; 21, second hydraulic rod; 2 2. Telescopic column; 23. Motor box; 24. Servo motor; 25. Drive rod; 26. Drive gear; 27. Transmission gear; 28. Heater; 29. ​​Refrigerator; 30. Delivery pipe; 31. Solenoid valve; 32. Connecting pipe; 33. Collection frame; 34. Nozzle; 35. Pressure 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

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1: See also Figures 1 to 8 As shown, a construction material strength detection device includes: a mounting platform 1; The top of the mounting platform 1 is fixedly connected to the test platform 2, the top of the mounting platform 1 is fixedly connected to the protective sleeve 3, the inner top wall of the protective sleeve 3 is fixedly connected to the positioning sleeve 4, and the bottom of the positioning sleeve 4 is fixedly connected to the first hydraulic rod 5; The bottom end of the first hydraulic rod 5 is fixedly connected to a mounting plate 6, the inner wall of the mounting plate 6 is fixedly connected to a pressure sensor 7, a plug hole is provided at the bottom of the mounting plate 6, an electric telescopic rod 8 is fixedly connected to the inner wall of the mounting plate 6, and the output end of the electric telescopic rod 8 is plugged into the inner wall of the plug hole, the bottom of the mounting plate 6 is fixedly connected to an iron core ring 9, the inner wall of the mounting plate 6 is fixedly connected to an electrical connector 10, the output end of the electrical connector 10 is electrically connected to a wire 11, and the wire 11 and the iron core ring 9 are electrically connected to each other; A socket frame 12 is provided above the test platform 2. The inner wall of the socket frame 12 is rotatably connected to a connecting disk 13. The bottom of the connecting disk 13 is fixedly connected with a placement sleeve 14. The inner top wall of the connecting disk 13 is located on the inner wall of the placement sleeve 14 and is plugged with a loading head 15. The top of the loading head 15 is fixedly connected to a fixing plate 16. The top of the fixing plate 16 is fixedly connected to 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 fixing plate 16 is fixedly connected to a plug rod 18. A limiting hole 19 is provided on the surface of the plug rod 18, and the surface of the plug rod 18 is plugged into the inner wall of the plug hole. The output end of the electric telescopic rod 8 is plugged into the inner wall of the limiting hole 19. There are four loading heads 15 , which are a metal conical head, a metal flat head, a rubber conical head and a rubber flat head in sequence.

[0020] When in use, the mounting platform 1 serves as a basic support, the test platform 2 fixedly connected to the top is used to place the material to be tested, and the protective sleeve frame 3 provides safety protection and structural stability. The positioning sleeve 4 at the top of the protective sleeve frame 3 fixes the first hydraulic rod 5. The extension and retraction of the first hydraulic rod 5 drives the mounting plate 6 connected below to move up and down, thereby transmitting pressure. The pressure sensor 7 embedded in the mounting plate 6 monitors the applied pressure value in real time to ensure data accuracy. The plug hole opened at its bottom cooperates with the electric telescopic rod 8. By inserting the output end of the electric telescopic rod 8 into the plug hole and the limit hole 19 of the plug rod 18, the loading head 15 can be quickly locked and released. The iron core ring 9 at the bottom of the mounting plate 6 and the electrical connector 10 are energized through the wire 11 to form an electromagnetic field, which is adsorbed and fixed with the negative magnetic ring 17 on the top of the loading head 15 to ensure the stability of the loading head 15 during the test. The sleeve frame 12 above the test platform 2 integrates multiple placement sleeves 14 through an internal rotatable connection disk 13. Each sleeve can be plugged with different types of loading heads 15 (such as metal conical heads, metal flat heads, etc.). Different loading heads 15 are switched by rotating the connection disk 13 to meet diverse testing needs. The fixing plate 16 at the top of the loading head 15 not only connects to the negative magnetic ring 17 but also secures the plug rod 18. Once the plug rod 18 is inserted into the socket of the mounting plate 6, the electric telescopic rod 8 locks the stopper hole 19, forming a rigid connection. This enables rapid replacement of the loading head 15, precise positioning, and stable pressure application. Simultaneously, real-time pressure feedback from the pressure sensor 7, combined with precise control of the first hydraulic rod 5, enables multi-dimensional testing of the material's compressive and bending strength. The overall design balances efficiency, flexibility, and data reliability.

[0021] Example 2: See also Figures 1 to 8As shown, both sides of the top of the mounting platform 1 are fixedly connected with assembly rods 20, wherein the top of one assembly rod 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, wherein both sides of the top of the other assembly rod 20 are fixedly connected with telescopic columns 22, 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 installed with a driving rod 25, the top 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 plate 13.

[0022] During operation, assembly rods 20 serve as support frames fixed to both sides of the mounting platform 1. A second hydraulic rod 21 is mounted on the top of one assembly rod 20, which, through its telescopic motion, propels the horizontal movement of the sleeve frame 12 to accommodate testing requirements of varying sizes. The other assembly rod 20 is connected to a telescopic column 22, which, in conjunction with the second hydraulic rod 21, ensures that the sleeve frame 12 maintains balance and stability during movement. A servo motor 24 embedded in a motor box 23 rotates a drive gear 26 via a drive rod 25 at its output end. This drive gear 26 engages a transmission gear 27 fixed to the surface of the connecting plate 13, thereby precisely rotating the connecting plate 13. This gear transmission system enables rapid switching between the four loading heads 15, meeting the requirements of various testing scenarios (such as conical press-fit and flat press-fit). The high-precision control of the servo motor 24, combined with the coordinated adjustment of the second hydraulic rod 21 and telescopic column 22, not only improves the efficiency of positioning the loading heads 15 but also ensures the accuracy of force application during testing, further enhancing the reliability and repeatability of test data. Overall, this system enables automated operation and flexible adaptation to multi-angle testing.

[0023] Example 3: See also Figures 1 to 8As shown, a heater 28 is fixedly connected to one side of the inner wall of the mounting platform 1, and a refrigerator 29 is fixedly connected to the other side of the inner wall of the mounting platform 1. The output ends of the heater 28 and the refrigerator 29 are fixedly connected to a delivery pipe 30. A solenoid valve 31 is installed on the inner wall of the delivery pipe 30. The top of the delivery pipe 30 is fixedly connected to a connecting pipe 32. Both ends of the connecting pipe 32 are fixedly connected to a collection frame 33, and the back 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 to multiple groups of nozzles 34, and the nozzles 34 are arranged above the test platform 2. The top sides of the platform 2 are slidably connected to pressure plates 35, the bottom of the pressure plate 35 is fixedly connected to a positioning block 36, the inner wall of the mounting platform 1 is fixedly connected to a group of first electric guide rails 37, the inner wall of the first electric guide rail 37 is slidably connected to a sliding block 38, and 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 to a control panel 39, the surface of the protective sleeve frame 3 is fixedly connected to the second electric guide rails 40 on both sides, the inner wall of the second electric guide rail 40 is slidably connected to a moving block 41, and the back of the moving block 41 is fixedly connected to a sealing door 42.

[0024] When in use, the device can simulate material strength tests under different temperature environments. The heater 28 and the refrigerator 29 transport the hot and cold media to the connecting pipe 32 through the delivery pipe 30, and the flow is accurately controlled by the solenoid valve 31. The two ends of the connecting pipe 32 are connected to the collection frame 33. The nozzle 34 installed on the surface can evenly spray the hot and cold media on the surface of the material on the test platform 2, thereby realizing the performance evaluation of the material under extreme temperature conditions. The pressure plate 35 is connected to the sliding block 38 on the first electric guide rail 37 through the positioning block 36 at the bottom, and is driven by the first electric guide rail 37 to slide along the test platform 2 for fixing or The material being tested is pressurized laterally to ensure that it remains stable during the test. The control panel 39 integrates all electrical control functions, through which the user can adjust parameters such as temperature, pressure, loading speed, etc. to achieve full-process automated operation. The second electric guide rail 40 is installed on the surface of the protective sleeve frame 3, and the moving block 41 thereon 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 entire system realizes the comprehensive strength detection of building materials under different environmental conditions through the combination of temperature control, mechanical pressurization and intelligent control, which significantly improves the comprehensiveness and accuracy of the test.

[0025] Example 4: See also Figures 1 to 8 As shown, a method for testing the strength of construction materials comprises the following steps: S1. Sample preparation and positioning: Place the material to be tested on the test platform 2, activate the first electric guide rail 37 through the control panel 39, drive the pressure plate 35 to slide along the test platform 2, and fix the position of the sample through the pressure plate 35; S2. Select and install the loading head 15: Control the servo motor 24 via the control panel 39 to drive the drive gear 26 to engage with the transmission gear 27, rotate the connecting plate 13 to the target loading head 15 position, and retract the electric telescopic rod 8 to release the current loading head 15; disconnect the electrical connector 10 to separate the core ring 9 from the negative magnetic ring 17, and re-energize the loading head 15 after replacing it. Insert the plug rod 18 into the plug hole of the mounting plate 6, and insert the output end of the electric telescopic rod 8 into the limit hole 19 to lock it; S3, environmental condition simulation: temperature parameters are set through the control panel 39, the heater 28 or the refrigerator 29 is started, and the hot and cold media are transported to the collection frame 33 through the delivery pipe 30 and the connecting pipe 32, and are evenly sprayed onto the sample surface by the nozzle 34; S4. Force detection: The first hydraulic rod 5 drives the mounting plate 6 downward, and the pressure sensor 7 monitors the pressure value in real time. If lateral pressure is required, the second hydraulic rod 21 and the telescopic column 22 adjust the position of the sleeve frame 12, and the pressure plate 35 applies lateral force through the first electric guide rail 37. S5. Data recording and analysis: The control panel 39 collects data from the pressure sensor 7 and generates a strength test report based on temperature parameters; S6. End of 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.

[0026] Embodiment 5: See also Figures 1 to 8 As shown, during the construction of a commercial complex project, the C60 high-strength concrete used in the main structure required strength inspection. To ensure that the concrete meets performance standards under different working conditions (such as temperature fluctuations and multi-directional loads), traditional testing methods (such as rebound and core drilling) cannot meet the multi-dimensional and high-precision testing requirements. The construction material strength testing device and method described in this application can achieve integrated testing of the compressive strength, flexural strength, and temperature adaptability of concrete test blocks.

[0027] A C60 concrete specimen (150 mm × 150 mm × 150 mm) with a standard curing period of 28 days was taken from the construction site and placed in the center of test platform 2.

[0028] The first electric guide rail 37 is activated through the control panel 39 to drive the pressure plates 35 on both sides to slide along the test platform 2. The test block is clamped and fixed by the pressure plates 35 to ensure that it is level and has no deviation.

[0029] Compressive Strength Test: Select a metal flat head (one of the four loading heads 15) for vertical pressure application. Input commands through the control panel 39, and the servo motor 24 drives the drive gear 26 to engage with the transmission gear 27, rotating the connecting plate 13 to the metal flat head position.

[0030] Quick switching: the electric telescopic rod 8 retracts to release the current loading head 15, and the electrical connector 10 is powered off to separate the core ring 9 from the negative magnetic ring 17; after replacing the loading head 15, power is turned on again for adsorption, the plug-in rod 18 is inserted into the plug hole of the mounting plate 6, and the output end of the electric telescopic rod 8 is inserted into the limit hole 19 to complete the locking.

[0031] Simulate high temperature (60°C) working conditions in summer: set the target temperature of heater 28 through control panel 39, open solenoid valve 31, and deliver hot air to collection frame 33 through delivery pipe 30 and connecting pipe 32. Then, hot air is evenly sprayed onto the surface of test block by nozzle 34 for 10 minutes until the overall temperature of test block reaches the target.

[0032] Vertical pressurization: The first hydraulic rod 5 drives the mounting plate 6 to press down at a speed of 2 mm / min. The pressure sensor 7 records the pressure value in real time until the test block cracks. The peak pressure is 2850 kN. The system automatically converts the compressive strength to 126.7 MPa (in line with the C60 standard).

[0033] Lateral flexural strength test: Switching to the rubber cone head, the second hydraulic rod 21 pushes the sleeve frame 12 to adjust the position of the loading head 15, and the pressure plate 35 applies lateral force through the first electric guide rail 37. The measured flexural strength is 8.5 MPa.

[0034] The refrigerator 29 is switched to simulate a low temperature of -10°C, and the nozzle 34 sprays a cold medium. The pressure test is repeated to confirm that the strength attenuation rate of the concrete at low temperature is less than 5%.

[0035] The control panel 39 automatically integrates the temperature and pressure data and generates a test report including the stress-strain curve and the temperature effect.

[0036] After the test is completed, the sealed door 42 is opened by the second electric guide rail 40, the test block debris is taken out, and the device automatically resets to the standby state.

[0037] Working Principle: The mounting platform 1 serves as the base support structure, upon which the test platform 2 is fixed for placing the test material. The protective housing 3 provides safety and overall stability. During testing, the control panel 39 first activates the first motorized guide rail 37, which drives the pressure plate 35 to slide and clamp the specimen, ensuring precise positioning and no misalignment. The selection and installation of the loading head 15 is achieved via a servo motor 24-driven gear system. After the connecting plate 13 rotates to the desired loading head 15 (e.g., a metal conical head, a flat head, or a rubber head), the electric telescopic rod 8 retracts and releases the current loading head 15. The core ring 9 is de-energized and separated from the negative magnetic ring 17. A new loading head 15 is replaced and re-energized. The plug-in rod 18 is inserted into the socket of the mounting plate 6 and locked into the stopper hole 19 by the electric telescopic rod 8, forming a rigid connection. The device can simulate various environmental conditions. A heater 28 or a cooler 29 evenly sprays hot and cold media onto the specimen surface through a delivery pipe 30 and a nozzle 34 to test the material's performance under extreme temperatures. During 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 required, the second hydraulic rod 21 and the telescopic column 22 adjust the position of the sleeve frame 12, and the pressure plate 35 applies lateral force through the first electric guide rail 37 to achieve multi-dimensional force testing. During the test, the control panel 39 collects pressure data in real time and combines it with temperature parameters to automatically generate a strength test report. The sealing door 42 is opened and closed by the second electric guide rail 40 to facilitate the removal and placement of samples and protect the test environment. The entire device realizes comprehensive, efficient and accurate testing of the compressive, flexural and bending strength of building materials through the synergistic effect of hydraulic systems, electromagnetic adsorption, gear transmission, temperature control and intelligent control, while supporting performance evaluation under different environmental conditions, significantly improving the flexibility and reliability of detection.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A construction material strength detection device, characterized in that: include: Installation platform (1); The top of the installation platform (1) is fixedly connected to a test platform (2), the top of the installation platform (1) is fixedly connected to a protective sleeve frame (3), the inner top wall of the protective sleeve frame (3) is fixedly connected to a positioning sleeve frame (4), and the bottom of the positioning sleeve frame (4) is fixedly connected to a first hydraulic rod (5); The bottom end of the first hydraulic rod (5) is fixedly connected to a mounting plate (6), the inner wall of the mounting plate (6) is fixedly connected to a pressure sensor (7), a plug hole is provided at the bottom of the mounting plate (6), the inner wall of the mounting plate (6) is fixedly connected to an electric telescopic rod (8), and the output end of the electric telescopic rod (8) is plugged into the inner wall of the plug hole, the bottom of the mounting plate (6) is fixedly connected to an iron core ring (9), the inner wall of the mounting plate (6) is fixedly connected to an electrical connector (10), the output end of the electrical connector (10) is electrically connected to a wire (11), and the wire (11) and the iron core ring (9) are electrically connected to each other; A sleeve frame (12) is provided above the test platform (2), the inner wall of the sleeve frame (12) is rotatably connected to a connecting disk (13), the bottom of the connecting disk (13) is fixedly connected to a placement sleeve (14) at all four sides, the inner top wall of the connecting disk (13) is located on the inner wall of the placement sleeve (14) and is plugged with a loading head (15), the top of the loading head (15) is fixedly connected to a fixing plate (16), the top of the fixing plate (16) is fixedly connected to a negative pole magnetic ring (17), and the top of the negative pole magnetic ring (17) is adsorbed and connected to the bottom of the core ring (9), the top of the fixing plate (16) is fixedly connected to a plug rod (18), a limiting hole (19) is provided on the surface of the plug rod (18), and the surface of the plug rod (18) is plugged into the inner wall of the plug 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 heads (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 sequence.

2. A construction material strength detection device according to claim 1, characterized in that: Both sides of the top of the mounting platform (1) are fixedly connected to assembly rods (20), the top of one of the assembly rods (20) is fixedly connected to 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), and both sides of the top of the other assembly rod (20) are fixedly connected to telescopic columns (22), and the output ends of the two telescopic columns (22) are fixedly connected to the other side of the sleeve frame (12).

3. A construction material strength detection device according to claim 1, characterized in that: A motor box (23) is fixedly connected to the surface of the sleeve frame (12), a servo motor (24) is fixedly connected to the inner wall of the motor box (23), a driving rod (25) is installed at the output end of the servo motor (24), a top end of the driving rod (25) is fixedly connected to a driving gear (26), a surface of the driving gear (26) is meshedly connected to a transmission gear (27), and an inner wall of the transmission gear (27) is fixedly connected to the surface of the connecting plate (13).

4. A construction material strength detection device according to claim 1, characterized in that: A heater (28) is fixedly connected to one side of the inner wall of the mounting platform (1), and a refrigerator (29) is fixedly connected to the other side of the inner wall of the mounting platform (1). Output ends of the heater (28) and the refrigerator (29) are both fixedly connected to a delivery pipe (30), and an electromagnetic valve (31) is installed on the inner wall of the delivery pipe (30).

5. A construction material strength detection device according to claim 4, characterized in that: The top end of the delivery pipe (30) is fixedly connected to a connecting pipe (32), both ends of the connecting pipe (32) are fixedly connected to a collecting frame (33), and the back 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 to multiple groups of nozzles (34), and the nozzles (34) are arranged above the test platform (2).

6. A construction material strength detection device according to claim 1, characterized in that: Both sides of the top of the test platform (2) are slidably connected to pressure plates (35), and the bottom of the pressure plates (35) is fixedly connected to a positioning block (36).

7. The construction material strength detection device according to claim 1, characterized in that: A set of first electric guide rails (37) are fixedly connected to the inner wall of the mounting platform (1), a sliding block (38) is slidably connected to the inner wall of the first electric guide rail (37), and the top of the sliding block (38) is fixedly connected to the bottom of the positioning block (36), and a control panel (39) is fixedly connected to the surface of the mounting platform (1).

8. The construction material strength detection device according to claim 1, characterized in that: Second electric guide rails (40) are fixedly connected to both sides of the surface of the protective sleeve frame (3); a moving block (41) is slidably connected to the inner wall of the second electric guide rail (40); and a sealing door (42) is fixedly connected to the back of the moving block (41).

9. A construction material strength testing method, applicable to a construction material strength testing device according to any one of claims 1 to 8, characterized in that: The following steps are involved: 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 pressure plate (35) to slide along the test platform (2), and fix the position of the sample through the pressure plate (35); S2. Selection and installation of the loading head (15): Control the servo motor (24) through the control panel (39) to drive the driving gear (26) to engage with the transmission gear (27), rotate the connecting plate (13) to the target loading head (15) position, and retract the electric telescopic rod (8) to release the current loading head (15); disconnect the power supply of the electrical device (10) to separate the core ring (9) from the negative magnetic ring (17), replace the loading head (15) and re-energize it for adsorption, insert the plug rod (18) into the plug hole of the mounting plate (6), and insert the output end of the electric telescopic rod (8) into the limit hole (19) to lock it; S3, environmental condition simulation: temperature parameters are set through the control panel (39), the heater (28) or the refrigerator (29) is started, and the hot and cold media are transported to the collection frame (33) through the delivery pipe (30) and the connecting pipe (32), and are evenly sprayed onto the surface of the sample by the nozzle (34); S4, force detection: the first hydraulic rod (5) drives the mounting plate (6) to press downward, and the pressure sensor (7) monitors the pressure value in real time; if lateral pressure is required, the second hydraulic rod (21) and the telescopic column (22) adjust the position of the sleeve frame (12), and the pressure plate (35) applies lateral force through the first electric guide rail (37); S5. Data recording and analysis: The control panel (39) collects data from the pressure sensor (7) and generates a strength test report in combination with temperature parameters; S6. End of operation: After the test is completed, the sealed door (42) is opened via the second electric guide rail (40), the sample is taken out and the device is reset.

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