Concrete crack resistance testing device

Abstract

The utility model discloses a concrete crack resistance testing device, which belongs to the technical field of concrete detection and is characterized in that two groups of fixed lifting seats are arranged on a bottom plate, a moving plate is arranged in a lifting groove in a sliding manner, and a top plate is arranged at the top of the moving plate; eccentric gears meshed with each other are installed in the middles of the first rotating shaft and the second rotating shaft. The first rotating shaft is further provided with a first linkage wheel, and the second rotating shaft is further provided with a second linkage wheel. Symmetrical vertical frames are further arranged on the bottom plate, and a fixing plate located above the top plate is fixedly arranged at the tops of the vertical frames. A test bed is further installed between the vertical frames, and a sensor is installed on the fixing plate. The top plate can be driven to reciprocate through the eccentric gear, concrete is placed on the test bed during testing, and the top plate can push the test bed to slide towards the fixing plate. After the test is completed, the sliding arm slides downwards along the vertical groove and then slides along the horizontal groove, when the sliding arm moves to the overturning part, the test bed deflects and dumps residues, and the design improves the machining efficiency and effect.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically a concrete crack resistance testing device. Background Technology

[0002] Concrete, often simply called PT, is a general term for engineering composite materials made by binding aggregates together with cementing materials. The term "concrete" usually refers to cement concrete, also known as ordinary concrete, which is made by mixing cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion. It is widely used in civil engineering. Concrete crack resistance refers to its ability to resist cracking. Crack resistance is a comprehensive property, related to tensile strength, ultimate tensile deformation capacity, tensile modulus of elasticity, autogenous volume deformation, creep, and thermal properties. To ensure the rationality of concrete mix design in practical applications, crack resistance tests are usually conducted on the concrete.

[0003] Patent CN220251579U discloses a concrete crack resistance testing device, including a test shell with a test chamber inside. The test chamber contains four limiting blocks for placing and restricting the movement of a placement mechanism. The placement mechanism includes a first test mechanism and a second test mechanism. The test chamber contains two symmetrically positioned power mechanisms to provide power to the first and second test mechanisms. The first test mechanism can fix the concrete to a tension plate by rotating a threaded sleeve shaft. Then, by moving the tension plate, an outward tensile force is applied to the concrete, thus testing its crack resistance under this outward force. The tension plate can uniformly apply pressure to the concrete, allowing for better detection of the overall crack resistance of the concrete.

[0004] The concrete crack resistance testing devices mentioned above have low testing efficiency and cannot quickly clean up concrete residue after the test. Therefore, a concrete crack resistance testing device was designed here to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a concrete crack resistance testing device to address the problems of low testing efficiency and inability to quickly clean up concrete residue after testing in traditional concrete crack resistance testing devices.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a concrete crack resistance testing device, comprising a base plate, on which two sets of fixed lifting seats are provided, a lifting groove is provided on the top of each lifting seat, a moving plate is slidably arranged in the lifting groove, and a top plate is provided on the top of the moving plate; a first rotating shaft is movably installed between the lifting seats, and a second rotating shaft is movably installed between the moving plates; eccentric gears that mesh with each other are installed in the middle of the first and second rotating shafts; a first linkage wheel is also installed on the first rotating shaft, and a second linkage wheel is also installed on the second rotating shaft; both the first and second linkage wheels are eccentric structures, a groove is provided on the side of the second linkage wheel, and a protrusion that mates with the groove is provided on the side of the first linkage wheel; symmetrical vertical frames are also provided on the base plate, and a fixed plate located above the top plate is fixedly installed on the top of each vertical frame; a test platform is movably installed between the vertical frames, and multiple sets of sensors are installed on the fixed plate.

[0007] As a further improvement of this utility model: symmetrical sliders are provided on the inner wall of the lifting groove, and sliding grooves that cooperate with the sliders are opened on both sides of the moving plate.

[0008] As a further improvement of this utility model, a lifting motor connected to the second rotating shaft is also installed on the lifting seat.

[0009] As a further improvement of this utility model: the test bench is provided with sliding arms on both sides, and a swing shaft is fixedly provided on the side of the sliding arms.

[0010] As a further embodiment of this utility model: vertical grooves that cooperate with the sliding arm are provided on the inner walls of both sides of the vertical frame, and a horizontal groove is also provided at the bottom of the vertical groove. A through groove that cooperates with the swing shaft is also provided in the middle of the vertical groove and the horizontal groove, and a flipping part that cooperates with the sliding arm is also provided at the end of the horizontal groove.

[0011] As a further improvement of this utility model: the back of the test bench is also provided with a handle, and a collection box is also installed at the bottom of the base plate.

[0012] This utility model provides an improved concrete crack resistance testing device, which has the following improvements and advantages compared with the prior art:

[0013] This invention utilizes an eccentric gear to drive the top plate in a reciprocating motion. When a test is required, the concrete to be tested is placed on the test platform. As the top plate moves upward, it pushes the test platform towards the fixed plate. After the test is completed, the test platform first slides downward along the vertical groove, then along the horizontal groove. When the sliding arm reaches the tilting part, the test platform deflects and the residue is poured into the collection box. This design improves the processing efficiency and effectiveness of the concrete crack resistance testing device. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the test bench in this utility model;

[0017] Figure 3 This is a partial sectional view of the vertical frame in this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Base plate; 2. Lifting seat; 3. Lifting groove; 4. Moving plate; 5. Slider; 6. Slide groove; 7. First rotating shaft; 8. Second rotating shaft; 9. Eccentric gear; 10. Lifting motor; 11. First linkage wheel; 12. Second linkage wheel; 13. Groove; 14. Protrusion; 15. Top plate; 16. Vertical frame; 17. Fixing plate; 18. Sensor; 19. Vertical groove; 20. Horizontal groove; 21. Through groove; 22. Tilting part; 23. Test bench; 24. Sliding arm; 25. Swing shaft; 26. Handle; 27. Collection box. Detailed Implementation

[0020] The following will be combined with the appendix Figures 1 to 3 This utility model will be described in detail, and the technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] This utility model provides an improved concrete crack resistance testing device, such as... Figures 1-3As shown, a concrete crack resistance testing device includes a base plate 1, on which two sets of fixed lifting seats 2 are mounted. A lifting groove 3 is formed on the top of each lifting seat 2, and a moving plate 4 is slidably mounted within the lifting groove 3. A top plate 15 is mounted on the top of each moving plate 4. A first rotating shaft 7 is movably mounted between the lifting seats 2, and a second rotating shaft 8 is movably mounted between the moving plates 4. An eccentric gear 9 that meshes with each other is mounted at the middle of the first rotating shaft 7 and the second rotating shaft 8. A first linkage wheel 11 is also mounted on the first rotating shaft 7. A second linkage wheel 12 is also installed on the second rotating shaft 8; both the first linkage wheel 11 and the second linkage wheel 12 are eccentric structures, the side of the second linkage wheel 12 is provided with a groove 13, and the side of the first linkage wheel 11 is provided with a protrusion 14 that cooperates with the groove 13; symmetrical vertical frames 16 are also provided on the base plate 1, and a fixing plate 17 located above the top plate 15 is fixedly provided on the top of the vertical frames 16; a test bench 23 is also movably installed between the vertical frames 16, and multiple sets of sensors 18 are installed on the fixing plate 17.

[0022] This invention uses an eccentric gear 9 to drive the top plate 15 to reciprocate up and down. When a test is needed, the concrete to be tested is placed on the test platform 23. When the top plate 15 moves upward, it pushes the test platform 23 to slide towards the fixed plate 17. After the test is completed, the test platform 23 first slides downward along the vertical groove 19, and then along the horizontal groove 20. When the sliding arm 24 moves to the flipping part 22, the test platform 23 deflects and dumps the residue into the collection box 27. This design improves the processing efficiency and effectiveness of the concrete crack resistance testing device.

[0023] See appendix Figure 1 Symmetrical sliders 5 are provided on the inner wall of the lifting groove 3, and sliding grooves 6 that cooperate with the sliders 5 are provided on both sides of the moving plate 4.

[0024] In this embodiment: when the moving plate 4 moves up and down along the lifting groove 3, a slider 5 and a groove 6 structure are designed to further improve stability.

[0025] See appendix Figure 1 The lifting seat 2 is also equipped with a lifting motor 10 that is connected to the second rotating shaft 8.

[0026] In this embodiment: In order to drive the second rotating shaft 8 to rotate, thereby further realizing the lifting and lowering of the top plate 15, a lifting motor 10 is designed.

[0027] See appendix Figure 2 - Appendix Figure 3The test bench 23 is provided with sliding arms 24 on both sides, and a swing shaft 25 is fixedly provided on the side of the sliding arms 24. Vertical grooves 19 that cooperate with the sliding arms 24 are provided on the inner walls of both sides of the vertical frame 16. A horizontal groove 20 is provided at the bottom of the vertical groove 19. A through groove 21 that cooperates with the swing shaft 25 is provided in the middle of the vertical groove 19 and the horizontal groove 20. A flipping part 22 that cooperates with the sliding arms 24 is provided at the end of the horizontal groove 20.

[0028] In this embodiment: the width of the vertical groove 19 is the same as the width of the sliding arm 24, the height of the horizontal groove 20 is the same as the thickness of the sliding arm 24, and the swing shaft 25 is movably disposed in the through groove 21. After the test is completed, the test platform 23 is first slid downward along the vertical groove 19, and then along the horizontal groove 20. When the sliding arm 24 moves to the flipping part 22, the test platform 23 is deflected and the residue is poured into the collection box 27.

[0029] See appendix Figure 1 and attached Figure 2 The back of the test bench 23 is also equipped with a handle 26, and a collection box 27 is installed at the bottom of the base plate 1.

[0030] In this embodiment: a handle 26 is designed to facilitate the movement and deflection of the test platform 23. A collection box 27 is designed to collect concrete residue after the test.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A testing device for the crack resistance of concrete, characterized in that: The system includes a base plate (1), on which two sets of fixed lifting seats (2) are provided. A lifting groove (3) is provided on the top of each lifting seat (2), and a moving plate (4) is slidably disposed within the lifting groove (3). A top plate (15) is provided on the top of each moving plate (4). A first rotating shaft (7) is movably installed between the lifting seats (2), and a second rotating shaft (8) is movably installed between the moving plates (4). An eccentric gear (9) meshes with each other at the middle of the first rotating shaft (7) and the second rotating shaft (8). A first linkage wheel (11) is also installed on the first rotating shaft (7), and a first linkage wheel (11) is installed on the second rotating shaft (8). A second linkage wheel (12) is also installed; both the first linkage wheel (11) and the second linkage wheel (12) are eccentric structures. The side of the second linkage wheel (12) is provided with a groove (13), and the side of the first linkage wheel (11) is provided with a protrusion (14) that cooperates with the groove (13). Symmetrical vertical frames (16) are also provided on the base plate (1). A fixed plate (17) located above the top plate (15) is fixedly provided on the top of the vertical frames (16). A test bench (23) is also movably installed between the vertical frames (16). Multiple sets of sensors (18) are installed on the fixed plate (17).

2. The concrete crack resistance testing device according to claim 1, characterized in that: Symmetrical sliders (5) are provided on the inner wall of the lifting groove (3), and sliding grooves (6) that cooperate with the sliders (5) are provided on both sides of the moving plate (4).

3. The concrete crack resistance testing device according to claim 1, characterized in that: The lifting seat (2) is also equipped with a lifting motor (10) connected to the second rotating shaft (8).

4. The concrete crack resistance testing device according to claim 1, characterized in that: The test bench (23) is provided with sliding arms (24) on both sides, and a swing shaft (25) is fixedly provided on the side of the sliding arms (24).

5. The concrete crack resistance testing device according to claim 4, characterized in that: The vertical frame (16) has vertical grooves (19) on both sides of its inner wall that cooperate with the sliding arm (24). A horizontal groove (20) is also provided at the bottom of the vertical groove (19). A through groove (21) that cooperates with the swing shaft (25) is also provided in the middle of the vertical groove (19) and the horizontal groove (20). A flipping part (22) that cooperates with the sliding arm (24) is also provided at the end of the horizontal groove (20).

6. The concrete crack resistance testing device according to claim 1, characterized in that: The test bench (23) is also provided with a handle (26) on the back, and a collection box (27) is also installed at the bottom of the base plate (1).

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