Concrete crack detection device

Abstract

The utility model discloses a concrete crack detection device, which relates to the technical field of crack detection, and comprises a base, the top of the base is fixedly connected with a support frame, a motor is arranged in the base, the output end of the motor is fixedly connected with a screw rod, the screw rod penetrates through the support frame, the outer side of the screw rod is rotatably provided with a moving block, and the moving block is fixedly connected with the support frame. An electric push rod is mounted in the bottom end of the moving block; the electric push rod is started to drive the telescopic shaft and the blocking ring to move, the movable shaft drives the limiting rod and the connecting shaft to move under the action of the spring, the connecting shaft drives the movable plate, the movable rod and the sensor to move when moving, the sensor extends into the crack, and then the telescopic shaft continues to move. When the telescopic shaft moves, the connecting rod is driven to move through the first transmission rod, when the connecting rod moves, the moving rod and the sensor are driven to move, in the design, the width of the crack can be measured while the crack is detected, and the working efficiency is improved.

Description

Technical Field

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

[0002] Concrete is a commonly used engineering material in various infrastructure projects (including prefabricated buildings). Concrete cracks are physical structural changes caused by internal and external factors in the concrete structure. Cracks are the main reason for the reduction in the load-bearing capacity, durability and waterproofing of concrete structures.

[0003] In a simple concrete crack detection device with patent number CN217766048U, a servo stepper motor drives the active tooth at its output end to rotate, which in turn drives the driven tooth, which is meshed with the active tooth, to rotate. When the driven tooth rotates, it drives the threaded screw to rotate from inside the connecting frame. Since the threaded collar is threadedly connected to the outside of the threaded screw and the threaded collar is limited in the lateral direction, it makes a linear up-and-down movement along the outside of the threaded screw when the threaded screw rotates, thereby changing the overall height of the detection component. This facilitates the detection of concrete cracks at different heights and has a simple structure.

[0004] However, existing crack detection devices have limitations in their use. They cannot measure the width of cracks during the detection process, which reduces work efficiency. Furthermore, it is difficult to clean the concrete before detection, which makes it impossible to guarantee the accuracy of the detection. Utility Model Content

[0005] The purpose of this invention is to provide a concrete crack detection device to address the problems of not being able to measure the width of cracks during concrete crack detection, which reduces work efficiency, and the difficulty in cleaning the concrete before detection, which makes it impossible to guarantee the accuracy of the detection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a concrete crack detection device, comprising a base, a support frame fixedly connected to the top of the base for support, a motor installed inside the base for power, a lead screw fixedly connected to the output end of the motor for rotation, the lead screw passing through the support frame, a movable block rotatably connected to the outside of the lead screw for movement, an electric push rod installed inside the bottom end of the movable block for extension and retraction, a telescopic shaft fixedly connected to one end of the electric push rod for extension and retraction, a blocking ring fixedly connected to the outside of the telescopic shaft for blocking, a movable shaft slidably connected inside the base for movement, a limit rod fixedly connected to the outside of the movable shaft for limiting, the limit rod being located on one side of the blocking ring, a connecting shaft fixedly connected to one end of the movable shaft for connection, and a spring provided inside the movable block at the other end of the movable shaft for elasticity, one end of the spring being fixedly connected to the movable shaft.

[0007] As a further embodiment of this utility model: a movable plate is slidably connected inside the movable block, allowing it to move; the other end of the connecting shaft is fixedly connected to the movable plate; a movable rod is slidably connected to one side of the movable plate; a connecting rod is fixedly connected to the top of the movable rod, serving as a connection; a first transmission rod is rotatably connected to the outside of the telescopic shaft, enabling transmission; the other end of the first transmission rod is rotatably connected to the top of the connecting rod; and a sensor is provided at the other end of the movable rod, enabling measurement.

[0008] As a further embodiment of this utility model: a disc is fixedly connected to the top of the lead screw, which can rotate; a limiting shaft is fixedly connected to the top of the disc, which can limit the movement; a cleaning plate is slidably connected to the top of the base, which can perform cleaning; and a second transmission rod is fixedly connected to the top of the cleaning plate, which can perform transmission.

[0009] As a further improvement of this utility model, the moving block has a moving groove inside that cooperates with the moving shaft, so that the moving shaft can move inside the moving block.

[0010] As a further improvement of this utility model, the top of the moving block is provided with a square groove that cooperates with the limiting rod, so that the limiting rod can move at the top of the moving block.

[0011] As a further improvement of this utility model, a sliding groove is provided on one side of the movable plate to cooperate with the movable rod, so that the movable rod can slide on one side of the movable plate.

[0012] As a further improvement of this utility model: the interior of the second transmission rod is provided with a rectangular groove that cooperates with the limiting shaft. The limiting shaft is slidably connected to the second transmission rod, so that the limiting shaft can drive the second transmission rod to move when it rotates.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. During operation, the electric push rod is activated, which drives the blocking ring to move via the telescopic shaft. Under the elastic force of the spring, the moving shaft drives the limit rod and the connecting shaft to move. When the connecting shaft moves, it drives the moving rod and the sensor to move via the moving plate, allowing the sensor to extend into the crack. Then the telescopic shaft continues to move. When the telescopic shaft moves, it drives the connecting rod to move via the first transmission rod. When the connecting rod moves, it drives the moving rod and the sensor to move. In this design, the width of the crack can be measured while the crack is being detected, which improves work efficiency.

[0015] 2. When in motion, the motor is started, which drives the lead screw to rotate. As the lead screw rotates, it moves the moving block, adjusting its position. Simultaneously, the rotation of the lead screw drives the disc to rotate, which in turn drives the limit shaft to rotate. The limit shaft then moves the second transmission rod, which in turn moves the cleaning plate to clean the concrete. In this design, the concrete can be cleaned while the position of the moving block is being adjusted, improving the accuracy of the inspection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the sensor connection of this utility model;

[0018] Figure 3 This is a schematic diagram of the cleaning plate connection of this utility model;

[0019] Figure 4 This is an enlarged view of section A of this utility model.

[0020] In the diagram: 1. Base; 2. Motor; 3. Support frame; 4. Lead screw; 5. Moving block; 6. Electric push rod; 7. Telescopic shaft; 8. Blocking ring; 9. Moving shaft; 10. Limiting rod; 11. Connecting shaft; 12. Moving plate; 13. Moving rod; 14. First transmission rod; 15. Connecting rod; 16. Sensor; 17. Spring; 18. Disc; 19. Limiting shaft; 20. Second transmission rod; 21. Cleaning plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 In this embodiment of the invention, a concrete crack detection device includes a base 1, a support frame 3 fixedly connected to the top of the base 1, a motor 2 installed inside the base 1, a lead screw 4 fixedly connected to the output end of the motor 2, the lead screw 4 passing through the support frame 3, a movable block 5 rotating on the outside of the lead screw 4, an electric push rod 6 installed inside the bottom end of the movable block 5, a telescopic shaft 7 fixedly connected to one end of the electric push rod 6, a blocking ring 8 fixedly connected to the outside of the telescopic shaft 7, a sliding shaft 9 slidably connected inside the base 1, a limiting rod 10 fixedly connected to the outside of the sliding shaft 9, and the limiting rod 10 located on one side of the blocking ring 8. One end of the moving shaft 9 is fixedly connected to the connecting shaft 11. A spring 17 is provided inside the moving block 5 at the other end of the moving shaft 9. One end of the spring 17 is fixedly connected to the moving shaft 9. A moving plate 12 is slidably connected inside the moving block 5. The other end of the connecting shaft 11 is fixedly connected to the moving plate 12. A moving rod 13 is slidably connected to one side of the moving plate 12. A connecting rod 15 is fixedly connected to the top of the moving rod 13. A first transmission rod 14 is rotatably connected to the outside of the telescopic shaft 7. The other end of the first transmission rod 14 is rotatably connected to the top of the connecting rod 15. A sensor 16 is provided at the other end of the moving rod 13.

[0023] In this embodiment: The electric push rod 6 is activated, which drives the telescopic shaft 7 to move. As the telescopic shaft 7 moves, it drives the blocking ring 8 to move. After the blocking ring 8 moves, under the elastic force of the spring 17, the moving shaft 9 drives the limiting rod 10 to move. Simultaneously, the moving shaft 9 drives the connecting shaft 11 to move, which in turn drives the moving plate 12 to move. The moving plate 12 then drives the moving rod 13 to move, which in turn drives the sensor 16 to move, allowing the sensor 16 to extend into the crack. Then, the telescopic shaft 7 continues to move, driving the first transmission rod 14 to move. The first transmission rod 14 then drives the connecting rod 15 to move, which in turn drives the moving rod 13 and the sensor 16 to move. This allows for simultaneous crack detection and crack width measurement, improving work efficiency.

[0024] Please refer to this carefully. Figure 1 and Figure 4A disc 18 is fixedly connected to the top of the lead screw 4, and a limit shaft 19 is fixedly connected to the top of the disc 18. A cleaning plate 21 is slidably connected to the top of the base 1, and a second transmission rod 20 is fixedly connected to the top of the cleaning plate 21.

[0025] In this embodiment: by starting the motor 2, the motor 2 drives the lead screw 4 to rotate. When the lead screw 4 rotates, it drives the moving block 5 to move, adjusting the position of the moving block 5. At the same time, when the lead screw 4 rotates, it drives the disc 18 to rotate. When the disc 18 rotates, it drives the limiting shaft 19 to rotate. When the limiting shaft 19 rotates, it drives the second transmission rod 20 to move. When the second transmission rod 20 moves, it drives the cleaning plate 21 to move, cleaning the concrete. The concrete can be cleaned while the position of the moving block 5 is adjusted, which can improve the accuracy of the detection.

[0026] Please refer to this carefully. Figure 2 and Figure 4 The moving block 5 has a moving groove inside that cooperates with the moving shaft 9. The top of the moving block 5 has a square groove that cooperates with the limiting rod 10. The side of the moving plate 12 has a sliding groove that cooperates with the moving rod 13. The second transmission rod 20 has a rectangular groove inside that cooperates with the limiting shaft 19. The limiting shaft 19 and the second transmission rod 20 are slidably connected.

[0027] In this embodiment: the movable groove allows the movable shaft 9 to move inside the movable block 5; the square groove allows the limiting rod 10 to move at the top of the movable block 5; the sliding groove allows the movable rod 13 to slide on one side of the movable plate 12; and the rectangular groove allows the limiting shaft 19 to drive the second transmission rod 20 to move when it rotates.

[0028] The working principle of this utility model is as follows: During use, the motor 2 is started, driving the lead screw 4 to rotate. The rotation of the lead screw 4 moves the moving block 5, adjusting its position. Simultaneously, the rotation of the lead screw 4 drives the disc 18 to rotate, which in turn drives the limiting shaft 19 to rotate. The limiting shaft 19 then moves the second transmission rod 20, which in turn moves the cleaning plate 21 to clean the concrete. This allows for simultaneous adjustment of the moving block 5's position and concrete cleaning, improving detection accuracy. Once the moving block 5 reaches the designated position, the electric push rod 6 is activated, driving the telescopic shaft 7 to move. The telescopic shaft 7's movement then drives the blocking ring... The moving shaft 9 moves the limiting rod 10 under the elastic force of the spring 17. Simultaneously, the moving shaft 9 moves the connecting shaft 11, which in turn moves the moving plate 12. The moving plate 12 then moves the moving rod 13, which in turn moves the sensor 16, allowing the sensor 16 to extend into the crack. Then, the telescopic shaft 7 continues to move, driving the first transmission rod 14. The first transmission rod 14 then moves the connecting rod 15, which in turn moves the moving rod 13 and the sensor 16. This allows for simultaneous crack detection and crack width measurement, improving work efficiency.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A concrete crack detection device comprising a base (1), characterized in that, A support frame (3) is fixedly connected to the top of the base (1). A motor (2) is installed inside the base (1). A lead screw (4) is fixedly connected to the output end of the motor (2). The lead screw (4) passes through the support frame (3). A moving block (5) rotates on the outside of the lead screw (4). An electric push rod (6) is installed inside the bottom end of the moving block (5). A telescopic shaft (7) is fixedly connected to one end of the electric push rod (6). A blocking ring (8) is fixedly connected to the outside of the telescopic shaft (7). A moving shaft (9) is slidably connected inside the base (1). A limit rod (10) is fixedly connected to the outside of the moving shaft (9). The limit rod (10) is located on one side of the blocking ring (8). A connecting shaft (11) is fixedly connected to one end of the moving shaft (9). A spring (17) is provided inside the moving block (5) at the other end of the moving shaft (9). One end of the spring (17) is fixedly connected to the moving shaft (9).

2. The concrete crack detection apparatus of claim 1, wherein The movable block (5) is internally slidably connected to a movable plate (12), and the other end of the connecting shaft (11) is fixedly connected to the movable plate (12). A movable rod (13) is slidably connected to one side of the movable plate (12), and a connecting rod (15) is fixedly connected to the top of the movable rod (13). A first transmission rod (14) is rotatably connected to the outside of the telescopic shaft (7), and the other end of the first transmission rod (14) is rotatably connected to the top end of the connecting rod (15). A sensor (16) is provided at the other end of the movable rod (13).

3. The concrete crack detection apparatus of claim 1, wherein A disc (18) is fixedly connected to the top of the lead screw (4), a limit shaft (19) is fixedly connected to the top of the disc (18), a cleaning plate (21) is slidably connected to the top of the base (1), and a second transmission rod (20) is fixedly connected to the top of the cleaning plate (21).

4. The concrete crack detection apparatus of claim 1, wherein The moving block (5) has a moving groove inside that cooperates with the moving shaft (9).

5. The concrete crack detection apparatus of claim 1, wherein The top of the moving block (5) is provided with a square groove that cooperates with the limiting rod (10).

6. The concrete crack detection apparatus of claim 2, wherein The movable plate (12) has a sliding groove on one side that cooperates with the movable rod (13).

7. The concrete crack detection apparatus of claim 3, wherein The second transmission rod (20) has a rectangular groove inside that cooperates with the limiting shaft (19), and the limiting shaft (19) is slidably connected to the second transmission rod (20).

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