A concrete strength measuring device for civil construction projects

Abstract

This invention discloses a concrete strength measuring device for civil engineering construction, comprising a machine base. A fixed clamp and three columns are fixedly connected to the upper end of the machine base. The fixed clamp and three columns are arranged in a rectangular pattern. A common top plate is fixedly connected to the upper end of the three columns. A hydraulic cylinder is fixedly installed on the upper end of the top plate. The telescopic end of the hydraulic cylinder penetrates downward through the top plate and is fixedly connected to an installation rod. A pressing mechanism is provided at the lower end of the installation rod. A placement platform is located directly below the pressing mechanism on the inner side of the machine base. Two support blocks are symmetrically arranged on the upper end of the placement platform. A device cavity is provided inside the placement platform. This invention enables rapid testing of concrete test blocks, providing quick and efficient testing, and obtaining multiple strength test results for the concrete test blocks, resulting in more comprehensive testing, high accuracy, and good safety.

Description

Technical Field

[0001] This invention relates to the field of strength measurement device technology, and in particular to a concrete strength measurement device for civil engineering construction. Background Technology

[0002] Concrete strength testing is an essential step in engineering construction. In the existing technology, the concrete strength testing process involves placing the concrete sample on a test table and then applying pressure to it with a pressure plate to test the load at failure. However, most existing concrete strength measuring devices directly place the concrete test block on the work table for compression.

[0003] Chinese Patent Publication No. CN110672404A discloses a concrete strength measuring device for civil engineering construction supervision, including a base and a translation mechanism above the base that drives a platform to move horizontally in a linear motion. The platform is rectangular, with baffles perpendicularly connected to adjacent two side edges. A cuboid concrete sample is placed on the platform, with two sides of the sample abutting against the surfaces of the two baffles. In this patent, the concrete sample lacks proper positioning during compression testing, resulting in unstable testing positions and affecting the accuracy of the results. Furthermore, fragments from broken concrete samples can scatter during testing, posing a significant safety hazard, and the testing of the concrete sample is not comprehensive enough. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a concrete strength measuring device for civil engineering construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A concrete strength measuring device for civil engineering construction includes a machine base. A fixed clamping rod and three columns are fixedly connected to the upper end of the machine base. The fixed clamping rod and the three columns are arranged in a rectangular pattern. A common top plate is fixedly connected to the upper end of the three columns. A hydraulic cylinder is fixedly installed on the upper end of the top plate. The telescopic end of the hydraulic cylinder penetrates downward through the top plate and is fixedly connected to an installation rod. A pressing mechanism is provided at the lower end of the installation rod. A placement platform is located on the inner side of the machine base, directly below the pressing mechanism. Two support blocks are symmetrically arranged on the upper end of the placement platform. A device cavity is provided inside the placement platform. A moving mechanism connected to the two support blocks is provided inside the device cavity. Positioning mechanisms are provided on the side walls of each of the three columns. A moving plate is fixedly sleeved on the installation rod. The columns penetrate the moving plate, and the moving plate is slidably connected to the columns. Three pressing rods corresponding to the positioning mechanisms are provided at the lower end of the moving plate. A pressure switch is installed at the lower end of the top plate.

[0007] As a further improvement of the present invention, the pressing mechanism includes a mounting block fixedly connected to the lower end of the mounting rod, a pressure head provided below the mounting block, a pressure sensor connected between the mounting block and the pressure head, two connecting rods fixedly connected to the upper end of the pressure head, the two connecting rods being symmetrically arranged on both sides of the pressure sensor, two movable grooves adapted to the connecting rods provided at the lower end of the mounting block, the connecting rods being slidably inserted into the movable grooves, a spring provided inside the movable groove, the upper end of the spring being connected to the inner top wall of the movable groove, and the lower end of the spring being connected to the upper end of the connecting rod.

[0008] As a further improvement of the present invention, the moving mechanism is set in a turntable inside the device cavity. A first rotating shaft is fixedly connected to the lower center of the turntable. The lower end of the first rotating shaft is rotatably connected to the inner bottom wall of the device cavity. An intermittent rotating structure connected to the first rotating shaft is provided inside the device cavity. Two movable rods are symmetrically arranged inside the device cavity. Both movable rods are located above the turntable. A second tension spring is connected between the two movable rods. The ends of the two movable rods away from the second tension spring penetrate the inner side wall of the device cavity and extend to the outer side of the placement platform. The two movable rods are fixedly connected to two support blocks respectively. A sliding column is rotatably connected to the lower side wall of each of the two movable rods. A groove is provided at the upper end of the turntable. A pressing block is fixedly connected to the middle of the inner bottom wall of the groove. The sliding column contacts the side wall of the pressing block.

[0009] As a further improvement of the present invention, the positioning mechanism includes a positioning clamp rod horizontally disposed through the column, the positioning clamp rod being slidably connected to the column, a fixing ring being fixedly sleeved on the positioning clamp rod, and a first tension spring being sleeved on the positioning clamp rod, one end of the first tension spring being connected to the column, and the other end of the first tension spring being connected to the fixing ring.

[0010] As a further improvement of the present invention, the intermittent rotation structure includes a motor installed on the bottom wall of the device cavity. The output shaft of the motor faces upward and is fixedly connected to a second rotating shaft. A disc and a limiting disc are fixedly sleeved on the second rotating shaft, with the limiting disc located above the disc. A dial is fixedly sleeved on the first rotating shaft. Four limiting grooves adapted to the limiting disc are provided at equal intervals along the circumference on the side wall of the dial. Four dial slots are provided at equal intervals along the circumference on the side wall of the dial. The four dial slots are spaced apart from the four limiting grooves. A toothed post adapted to the dial slot is fixedly connected to the upper end of the disc.

[0011] As a further improvement of the present invention, a protective cover is slidably fitted on the mounting rod, and the protective cover is located below the movable plate.

[0012] As a further improvement of the present invention, the protective cover is made of transparent resin material.

[0013] As a further improvement of the present invention, a waste discharge port is provided on the side wall of the machine tool.

[0014] As a further improvement of the present invention, the inner bottom wall of the machine is an inclined surface that slopes downward toward the discharge port.

[0015] The beneficial effects of this invention are:

[0016] 1. By setting up a pressing mechanism and support blocks, the concrete test block is supported by two support blocks, and the pressing mechanism is driven by the extension of the hydraulic cylinder to press down on the concrete test block, which can complete the rapid testing of the concrete test block. The testing is fast and efficient.

[0017] 2. By setting up a moving plate, a pressing rod, and a positioning mechanism, when the hydraulic cylinder extends and drives the moving plate to move downward, the moving plate can drive the pressing rod to move downward. The pressing rod can press the positioning mechanism to perform the action. The positioning mechanism can position the concrete test block and ensure the consistency of the concrete test block's position on the support block, thus ensuring the accuracy of the concrete test block test results.

[0018] 3. By setting up a pressure switch, a moving mechanism, and a hydraulic cylinder to drive the moving plate to move upward and reset each time, the moving plate contacts the pressure switch, which in turn controls the moving mechanism to move once. This in turn drives the two support blocks to complete one spacing adjustment. This allows for continuous strength testing of concrete test blocks under different support block spacing conditions, thus obtaining multiple strength test results for the concrete test blocks, making the testing more comprehensive.

[0019] 4. By setting up a protective cover, when the hydraulic cylinder extends and drives the mounting rod to move down, the protective cover will descend with the mounting rod and cover the placement platform. This will provide protection when the concrete test block is being tested for strength, preventing fragments of the concrete test block from scattering out, making it safer. It also allows for the centralized collection of fragments from the concrete test block afterward.

[0020] This invention enables rapid testing of concrete test blocks, providing quick and efficient testing, and obtaining multiple strength test results for the concrete test blocks, resulting in more comprehensive testing, high accuracy, and good safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a concrete strength measuring device for civil engineering construction proposed in this invention;

[0022] Figure 2 This is a side view of the moving plate and extrusion rod of a concrete strength measuring device for civil engineering proposed in this invention.

[0023] Figure 3This is a schematic diagram of the pressing mechanism of a concrete strength measuring device for civil engineering construction proposed in this invention.

[0024] Figure 4 This is a three-dimensional structural schematic diagram of the protective cover of a concrete strength measuring device for civil engineering proposed in this invention.

[0025] Figure 5 This is a schematic diagram of the internal structure of the placement platform of a concrete strength measuring device for civil engineering proposed in this invention.

[0026] Figure 6 This is a top view schematic diagram of the intermittent rotating structure of a concrete strength measuring device for civil engineering proposed in this invention;

[0027] Figure 7 This is a top view schematic diagram of the turntable, groove, and extrusion block of a concrete strength measuring device for civil engineering proposed in this invention.

[0028] In the diagram: 1. Machine base, 2. Extrusion rod, 3. Column, 4. Moving plate, 5. Top plate, 6. Pressure switch, 7. Hydraulic cylinder, 8. Mounting rod, 9. Protective cover, 10. Mounting block, 11. Pressure sensor, 12. Press head, 13. Positioning clamping rod, 14. Fixing ring, 15. First tension spring, 16. Fixing clamping rod, 17. Support block, 18. Movable rod, 19. Placement platform, 20. Waste discharge port, 21. Movable groove, 22. Spring, 23. Connecting rod, 24. Second tension spring, 25. Sliding column, 26. Turntable, 27. Device cavity, 28. Limiting plate, 29. Disc, 30. First rotating shaft, 31. Second rotating shaft, 32. Motor, 33. Gutter, 34. Limiting groove, 35. Tooth column, 36. Gutter, 37. Groove, 38. Extrusion block. Detailed Implementation

[0029] 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.

[0030] Figures 1-7A concrete strength measuring device for civil engineering construction includes a machine base 1. A fixed clamping rod 16 and three columns 3 are fixedly connected to the upper end of the machine base 1. The fixed clamping rod 16 and the three columns 3 are arranged in a rectangular pattern. A common top plate 5 is fixedly connected to the upper end of the three columns 3. A hydraulic cylinder 7 is fixedly installed on the upper end of the top plate 5. The telescopic end of the hydraulic cylinder 7 penetrates downward through the top plate 5 and is fixedly connected to an installation rod 8. A pressing mechanism is provided at the lower end of the installation rod 8. A placement platform 19 is located on the inner side of the machine base 1, directly below the pressing mechanism. Two support blocks 17 are symmetrically arranged on the upper end of the placement platform 19. A device cavity 27 is provided inside the placement platform 19. A moving mechanism connected to the two support blocks 17 is provided inside the device cavity 27. A positioning mechanism is provided on the side wall of each of the three columns 3. A moving plate is fixedly sleeved on the installation rod 8. 4. The column 3 passes through the movable plate 4, and the movable plate 4 is slidably connected to the column 3. The lower end of the movable plate 4 is provided with three extrusion rods 2 corresponding to the positioning mechanism. The lower end of the top plate 5 is equipped with a pressure switch 6. A protective cover 9 is slidably mounted on the mounting rod 8. The protective cover 9 is located below the movable plate 4. The protective cover 9 is made of transparent resin. When the hydraulic cylinder 7 extends and drives the mounting rod 8 to move down, the protective cover 9 will descend with the mounting rod 8 and cover the placement platform 19. In this way, it can play a protective role when the concrete test block is tested for strength, preventing the concrete test block fragments from flying out, making it safer. The side wall of the machine platform 1 is provided with a debris discharge port 20. The inner bottom wall of the machine platform 1 is a sloped surface that slopes downward toward the debris discharge port 20. The fragments generated by the concrete test block can fall into the machine platform 1 and be discharged through the debris discharge port 20.

[0031] In this invention, the pressing mechanism includes a mounting block 10 fixedly connected to the lower end of the mounting rod 8. A pressure head 12 is provided below the mounting block 10. A pressure sensor 11 is connected between the mounting block 10 and the pressure head 12. Two connecting rods 23 are fixedly connected to the upper end of the pressure head 12. The two connecting rods 23 are symmetrically arranged on both sides of the pressure sensor 11. The lower end of the mounting block 10 is provided with two movable grooves 21 that are adapted to the connecting rods 23. The connecting rods 23 are slidably inserted into the movable grooves 21. A spring 22 is provided inside the movable groove 21. The upper end of the spring 22 is connected to the inner top wall of the movable groove 21, and the lower end of the spring 22 is connected to the upper end of the connecting rod 23.

[0032] The specific moving mechanism is set in a turntable 26 inside the device cavity 27. A first rotating shaft 30 is fixedly connected to the lower center of the turntable 26. The lower end of the first rotating shaft 30 is rotatably connected to the inner bottom wall of the device cavity 27. The device cavity 27 has an intermittent rotating structure connected to the first rotating shaft 30. Two movable rods 18 are symmetrically arranged inside the device cavity 27. Both movable rods 18 are located above the turntable 26. A second tension spring 24 connects the two movable rods 18. The ends of the two movable rods 18 away from the second tension spring 24 pass through the inner side wall of the device cavity 27 and extend to the outer side of the placement platform 19. The two movable rods 18 are fixedly connected to two support blocks 17 respectively. Sliding columns 25 are rotatably connected to the lower side walls of the two movable rods 18. The upper end of the turntable 26 has a groove 37. A pressing block 38 is fixedly connected to the middle of the inner bottom wall of the groove 37, and the sliding column 25 contacts the side wall of the pressing block 38. The intermittent rotation structure includes a motor 32 installed on the inner bottom wall of the device cavity 27, a pressure switch 6 electrically connected to the motor 32, the output shaft of the motor 32 facing upward and fixedly connected to a second rotating shaft 31, a disc 29 and a limiting disc 28 fixedly sleeved on the second rotating shaft 31, and the limiting disc 28 is located above the disc 29. A dial 36 is fixedly sleeved on the first rotating shaft 30. Four limiting grooves 34 that are adapted to the limiting disc 28 are provided at equal intervals along the circumference on the side wall of the dial 36. Four dial slots 33 are provided at equal intervals along the circumference on the side wall of the dial 36. The four dial slots 33 and the four limiting grooves 34 are spaced apart. A toothed column 35 that is adapted to the dial slot 33 is fixedly connected to the upper end of the disc 29.

[0033] The specific positioning mechanism includes a positioning clamp rod 13 horizontally mounted on the column 3. The positioning clamp rod 13 is slidably connected to the column 3. A fixing ring 14 is fixedly sleeved on the positioning clamp rod 13. A first tension spring 15 is mounted on the positioning clamp rod 13. One end of the first tension spring 15 is connected to the column 3, and the other end of the first tension spring 15 is connected to the fixing ring 14. The three positioning clamp rods 13 and the fixing clamp rod 16 can move synchronously to position the concrete test block, ensuring the consistency of the concrete test block's position on the support block 17 and ensuring the accuracy of the concrete test block's test results.

[0034] When using this invention, the concrete sample block to be tested is placed above two support blocks 17. The hydraulic cylinder 7 is activated to extend, which drives the mounting rod 8 to descend. The descent of the mounting rod 8 can drive the moving plate 4 to descend. The descent of the moving plate 4 can drive the extrusion rod 2 to move down. The extrusion rod 2 can extrude the positioning clamp rod 13 to move. The three positioning clamp rods 13 can move synchronously to position the concrete sample block.

[0035] As the mounting rod 8 moves down, the protective cover 9 descends with the mounting rod 8 and covers the top of the placement platform 19, thus providing protection when the concrete test block is tested for strength. Then, the hydraulic cylinder 7 continues to extend and drives the pressing mechanism to press down on the concrete test block, which can complete the rapid testing of the concrete test block. The pressure sensor 11 can intuitively understand the test pressure value.

[0036] Then, the hydraulic cylinder 7 is activated to retract, causing the moving plate 4 to move upward and reset. When the moving plate 4 moves upward and resets to its limit position, it contacts the pressure switch 6, which in turn controls the moving mechanism to move once, i.e., the motor 32 rotates once, causing the disc 29 and the limit disc 28 to rotate, which in turn causes the toothed column 35 to rotate the dial 36 once. The dial 36 rotates at an angle of 90 degrees. The rotation of the dial 36 causes the first rotating shaft 30 to rotate, which in turn causes the turntable 26 to rotate. The rotation of the turntable 26 causes the extrusion block 38 to rotate, which in turn causes the extrusion block 38 to extrude the movable rod 18, thereby causing the two support blocks 17 to complete a spacing adjustment. This allows for four strength tests on the concrete test block under four different spacing conditions of the support blocks 17, thus obtaining multiple strength test results for the concrete test block, making the test more comprehensive.

[0037] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A concrete strength measuring device for civil engineering construction, comprising a machine base (1), characterized in that, The upper end of the machine base (1) is fixedly connected to a fixed clamp rod (16) and three columns (3). The fixed clamp rod (16) and the three columns (3) are arranged in a rectangular shape. The upper ends of the three columns (3) are fixedly connected to the same top plate (5). A hydraulic cylinder (7) is fixedly installed on the upper end of the top plate (5). The telescopic end of the hydraulic cylinder (7) passes downward through the top plate (5) and is fixedly connected to an installation rod (8). The lower end of the installation rod (8) is provided with a pressing mechanism. The inner side of the machine base (1) is provided with a placement platform (19) located directly below the pressing mechanism. The placement platform (19) is provided with a pressing mechanism. Two support blocks (17) are symmetrically provided at the upper end of the 9). The placement platform (19) is provided with a device cavity (27). The device cavity (27) is provided with a moving mechanism connected to the two support blocks (17). The side walls of the three columns (3) are provided with positioning mechanisms. A moving plate (4) is fixedly sleeved on the mounting rod (8). The column (3) passes through the moving plate (4), and the moving plate (4) is slidably connected to the column (3). The lower end of the moving plate (4) is provided with three pressing rods (2) corresponding to the positioning mechanism. A pressure switch (6) is installed at the lower end of the top plate (5). The moving mechanism is set in a turntable (26) inside the device cavity (27). A first rotating shaft (30) is fixedly connected to the center of the lower end of the turntable (26). The lower end of the first rotating shaft (30) is rotatably connected to the inner bottom wall of the device cavity (27). The device cavity (27) is provided with an intermittent rotation structure connected to the first rotating shaft (30). Two movable rods (18) are symmetrically arranged inside the device cavity (27). Both movable rods (18) are located above the turntable (26). A second [mechanism] connects the two movable rods (18). The tension spring (24), the ends of the two movable rods (18) away from the second tension spring (24) both penetrate the inner wall of the device cavity (27) and extend to the outer side of the placement platform (19), and the two movable rods (18) are respectively fixedly connected to the two support blocks (17), and the lower side walls of the two movable rods (18) are rotatably connected to the sliding column (25), the upper end of the turntable (26) is provided with a groove (37), and the middle of the inner bottom wall of the groove (37) is fixedly connected to the extrusion block (38), and the sliding column (25) contacts the side wall of the extrusion block (38); The rotation of the turntable causes the extrusion block to rotate, which in turn causes the extrusion block to press against the movable rod, thereby causing the two support blocks to complete one spacing adjustment. Under the condition of four different spacings of the support blocks, four strength tests of the concrete test block are completed.

2. The concrete strength measuring device for civil construction projects according to claim 1, characterized in that, The pressing mechanism includes a mounting block (10) fixedly connected to the lower end of the mounting rod (8). A pressure head (12) is provided below the mounting block (10). A pressure sensor (11) is connected between the mounting block (10) and the pressure head (12). Two connecting rods (23) are fixedly connected to the upper end of the pressure head (12). The two connecting rods (23) are symmetrically arranged on both sides of the pressure sensor (11). The lower end of the mounting block (10) is provided with two movable grooves (21) adapted to the connecting rods (23). The connecting rods (23) are slidably inserted into the movable grooves (21). A spring (22) is provided inside the movable groove (21). The upper end of the spring (22) is connected to the inner top wall of the movable groove (21), and the lower end of the spring (22) is connected to the upper end of the connecting rod (23).

3. The concrete strength measuring device for civil construction engineering according to claim 1, characterized in that, The positioning mechanism includes a positioning clamp rod (13) that is horizontally disposed on the column (3). The positioning clamp rod (13) is slidably connected to the column (3). A fixing ring (14) is fixedly sleeved on the positioning clamp rod (13). A first tension spring (15) is sleeved on the positioning clamp rod (13). One end of the first tension spring (15) is connected to the column (3), and the other end of the first tension spring (15) is connected to the fixing ring (14).

4. The concrete strength measuring device for civil construction engineering according to claim 1, characterized in that, The intermittent rotation structure includes a motor (32) installed on the bottom wall of the device cavity (27). The output shaft of the motor (32) faces upward and is fixedly connected to a second rotating shaft (31). A disc (29) and a limiting disc (28) are fixedly sleeved on the second rotating shaft (31), and the limiting disc (28) is located above the disc (29). A dial (36) is fixedly sleeved on the first rotating shaft (30). The side wall of the dial (36) is provided with four limiting grooves (34) that are adapted to the limiting disc (28) at equal intervals along the circumference. The side wall of the dial (36) is provided with four dial slots (33) at equal intervals along the circumference. The four dial slots (33) and the four limiting grooves (34) are spaced apart. The upper end of the disc (29) is fixedly connected to a toothed post (35) that is adapted to the dial slot (33).

5. A concrete strength measuring device for civil engineering construction according to claim 1, characterized in that, A protective cover (9) is slidably fitted onto the mounting rod (8), and the protective cover (9) is located below the movable plate (4).

6. The concrete strength measuring device for civil construction engineering according to claim 5, characterized in that, The protective cover (9) is made of transparent resin.

7. The concrete strength measuring device for civil construction engineering according to claim 1, characterized in that, The machine tool (1) has a waste discharge port (20) on its side wall.

8. A concrete strength measuring device for civil construction projects according to claim 7, characterized in that, The inner bottom wall of the machine (1) is an inclined surface that slopes downward toward the discharge port (20).

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