A concrete crack width monitoring device

Abstract

The utility model belongs to the field of concrete crack monitoring, specifically is a kind of concrete crack width monitoring device, it include: fixed plate, the rear end of fixed plate is provided with support assembly;Detection component, detection component is arranged in the inside of fixed plate;Pushing assembly, pushing assembly is arranged in the surface of detection component;The detection component includes the threaded rod of rotation connection in the inside of fixed plate, the left and right ends of threaded rod are all fixedly connected with handle;The utility model can be pasted in concrete surface by the suction disc of fixed plate rear end, at this time, the middle part of fixed plate can be ensured to be in the position of crack according to the scale line of fixed plate surface, then can rotate handle and adjust the distance of two internal thread blocks from crack, and in this process, the distance of two internal thread blocks is same, i.

Description

Technical Field

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

[0002] When periodically measuring the width and changes of cracks on or inside concrete structures, it is necessary to use concrete width monitoring devices for detection. These devices collect and analyze crack data through physical, optical, electronic, or acoustic sensing technologies to assess the safety, durability, and stability of the structure, providing a scientific basis for engineering maintenance, repair, and disaster early warning. The most common detection device is an ultrasonic detector, which calculates the crack width by measuring the time difference of ultrasonic waves propagating at the crack.

[0003] Currently, there are two common methods for monitoring crack width using ultrasonic detectors: cross-crack measurement and non-cross-crack measurement. In cross-crack measurement, it's crucial to ensure that the two transducers of the ultrasonic detector are equidistant from the crack. Currently, operators typically use a ruler to measure the spacing. However, if the concrete on both sides of the crack is damaged within a small area, the ruler cannot be placed horizontally for accurate spacing measurement. The operator must rely on direct observation or experience to position the two transducers, leading to errors in the distance between the two transducers and the crack, which in turn results in inaccurate crack width monitoring data. Therefore, this paper proposes a concrete crack width monitoring device to address these issues. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and avoid errors in monitoring the width of concrete cracks, this utility model proposes a concrete crack width monitoring device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a concrete crack width monitoring device, comprising:

[0006] A fixing plate, wherein a support component is provided at the rear end of the fixing plate;

[0007] The detection component is disposed inside the fixed plate;

[0008] A pushing component is disposed on the surface of the detection component;

[0009] The detection assembly includes a threaded rod rotatably connected inside a fixed plate. Handles are fixedly connected to both ends of the threaded rod. An internal threaded block is threaded onto the surface of the threaded rod. A vertical rod is fixedly connected to the top front of the internal threaded block. A connecting sleeve is fixedly connected to the top of the vertical rod. A second electric telescopic rod is fixedly connected to the rear end of the connecting sleeve. A support sleeve is fixedly connected to the rear end of the second electric telescopic rod. Connecting telescopic rods are fixedly connected to both the left and right sides of the rear end of the connecting sleeve. A transducer is slidably connected inside the support sleeve.

[0010] Preferably, the support assembly includes an electric telescopic rod fixedly connected to the rear end of the fixed plate, a suction cup fixedly connected to the rear end of the electric telescopic rod, a connecting block fixedly connected to the surface of the suction cup near the electric telescopic rod, and a blocking block fixedly connected to the surface of the connecting block.

[0011] Preferably, the front end of the fixing plate is provided with scale lines, and there are four electric telescopic rods, which are respectively set at the four corners of the rear end of the fixing plate. Any two electric telescopic rods set diagonally can be used to stably support the fixing plate through suction cups. The plug is adapted to be inserted into the inside of the suction cup. After the plug is pulled out from the inside of the suction cup, the suction cup can be removed from the adsorbed concrete surface.

[0012] Preferably, the left and right ends of the threaded rod pass through the left and right sides of the fixing plate, respectively, and the two handles are located outside the left and right sides of the fixing plate, respectively. The rotatable handles can drive the threaded rod to rotate.

[0013] Preferably, the internal threaded blocks are slidably connected inside the fixed plate, and the threads inside the two internal threaded blocks are opened in opposite directions. After the threaded rod rotates, it will drive the two internal threaded blocks to move in opposite directions.

[0014] Preferably, the end of the connecting telescopic rod away from the connecting sleeve is fixedly connected to the front end of the support sleeve, and the connecting telescopic rod can provide stable support for the support sleeve. The rear end of the transducer extends to the rear side of the support sleeve.

[0015] Preferably, the pushing assembly includes a crossbar fixedly connected to the front end of the top of the support sleeve, a sliding disc fixedly connected to the front end of the crossbar, a pressure spring wound around the surface of the crossbar, and a rotating block rotatably connected to the surface of the sliding disc.

[0016] Preferably, the two ends of the pressure spring are fixedly connected to the near ends of the sliding disc and the support sleeve, respectively. The rotating block and the front end of the transducer are adapted to each other and make contact. The elastic force of the pressure spring will pull the rotating block to push the transducer. At this time, the transducer is pushed and fits tightly against the concrete surface, thereby enabling accurate detection of the crack width on the concrete surface.

[0017] The advantages of this utility model are:

[0018] This invention attaches the suction cup at the rear end of the fixing plate to the concrete surface. At this time, the center of the fixing plate can be ensured to be at the crack position according to the scale line on the surface of the fixing plate. Then, the handle can be rotated to adjust the distance between the two internal threaded blocks and the crack. During this process, the two internal threaded blocks move the same distance, that is, the distance between the two transducers and the crack is always the same, ensuring the accuracy of the two transducers in detecting the crack depth across the crack. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the support component structure of this utility model;

[0022] Figure 3 This is a partial structural diagram of the fixing plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the surface structure of the support sleeve of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the pushing component of this utility model.

[0025] In the diagram: 1. Fixed plate; 2. Support assembly; 21. Electric telescopic rod one; 22. Suction cup; 23. Connecting block; 24. Block; 3. Detection assembly; 31. Threaded rod; 32. Handle; 33. Internal threaded block; 34. Vertical rod; 35. Connecting sleeve; 36. Electric telescopic rod two; 37. Support sleeve; 38. Connecting telescopic rod; 39. Transducer; 4. Push assembly; 41. Horizontal bar; 42. Sliding disc; 43. Pressure spring; 44. Rotating block. Detailed Implementation

[0026] 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 scope of protection of the present utility model.

[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail as follows:

[0028] This application discloses a device for monitoring the width of concrete cracks. (Refer to...) Figure 1 A concrete crack width monitoring device, comprising:

[0029] Fixed plate 1, with a support component 2 at its rear end;

[0030] Detection component 3 is installed inside the fixed plate 1;

[0031] Push component 4 is positioned on the surface of detection component 3;

[0032] Reference Figures 3-4 The detection component 3 includes a threaded rod 31 rotatably connected inside the fixed plate 1. Handles 32 are fixedly connected to both ends of the threaded rod 31. The left and right ends of the threaded rod 31 pass through the left and right sides of the fixed plate 1, respectively. The two handles 32 are located outside the left and right sides of the fixed plate 1, respectively. Rotating the handles 32 causes the threaded rod 31 to rotate. Internal threaded blocks 33 are threadedly connected to the surface of the threaded rod 31. The internal threaded blocks 33 are slidably connected inside the fixed plate 1. The threads inside the two internal threaded blocks 33 are in opposite directions. Rotation of the threaded rod 31 causes the two internal threaded blocks 33 to move in opposite directions. A vertical rod 34 is fixedly connected to the top of the front side of the threaded block 33. A connecting sleeve 35 is fixedly connected to the top of the vertical rod 34. An electric telescopic rod 36 is fixedly connected to the rear end of the connecting sleeve 35. A support sleeve 37 is fixedly connected to the rear end of the electric telescopic rod 36. Connecting telescopic rods 38 are fixedly connected to both the left and right sides of the rear end of the connecting sleeve 35. A transducer 39 is slidably connected inside the support sleeve 37. The end of the connecting telescopic rod 38 away from the connecting sleeve 35 is fixedly connected to the front end of the support sleeve 37. The connecting telescopic rod 38 can provide stable support for the support sleeve 37. The rear end of the transducer 39 extends to the rear side of the support sleeve 37.

[0033] Reference Figure 2 The support assembly 2 includes an electric telescopic rod 21 fixedly connected to the rear end of the fixed plate 1. A suction cup 22 is fixedly connected to the rear end of the electric telescopic rod 21. A connecting block 23 is fixedly connected to the surface of the suction cup 22 near the electric telescopic rod 21. A blocking block 24 is fixedly connected to the surface of the connecting block 23. The front end of the fixed plate 1 is provided with scale lines. There are four electric telescopic rods 21, which are respectively set at the four corners of the rear end of the fixed plate 1. Any two electric telescopic rods 21 set diagonally can provide stable support for the fixed plate 1 through the suction cup 22. The blocking block 24 is adapted to be inserted into the inside of the suction cup 22. After the blocking block 24 is pulled out from the inside of the suction cup 22, the suction cup 22 can be removed from the adsorbed concrete surface.

[0034] Reference Figures 4-5 The pushing component 4 includes a crossbar 41 fixedly connected to the front end of the top of the support sleeve 37. A sliding disk 42 is fixedly connected to the front end of the crossbar 41. A pressure spring 43 is wound around the surface of the crossbar 41. A rotating block 44 is rotatably connected to the surface of the sliding disk 42. The two ends of the pressure spring 43 are fixedly connected to the near ends of the sliding disk 42 and the support sleeve 37, respectively. The rotating block 44 and the front end of the transducer 39 are adapted to each other and make contact. The elastic force of the pressure spring 43 will pull the rotating block 44 to push the transducer 39. At this time, the transducer 39 is pushed and closely fits the concrete surface, thereby enabling accurate detection of the crack width on the concrete surface.

[0035] Working principle: The operator observes the scale lines set on the surface of the fixing plate 1 so that the middle of the fixing plate 1 is located at the crack position. At this time, the suction cup 22 is placed on a relatively flat concrete surface, and then the fixing plate 1 is pushed directly towards the concrete plane. At this time, the electric telescopic rod 21 is not driven and will not extend or retract. Therefore, the fixing plate 1 will push the suction cup 22 to adhere to the concrete plane through the electric telescopic rod 21.

[0036] The operator can then rotate the handle 32, which will drive the threaded rod 31 to rotate. The threaded rod 31 will then drive the two internal threaded blocks 33 on the surface to move. Since the threads inside the two internal threaded blocks 33 are in opposite directions, the two internal threaded blocks 33 are driven to move in opposite directions. During this process, the two internal threaded blocks 33 move at the same amplitude. At this time, the distance between the two internal threaded blocks 33 and the crack can be adjusted according to the scale line.

[0037] After adjustment, connect transducer 39 to the ultrasonic detector, apply coupling agent to the rear end of both transducers 39, then pull the sliding plate 42 to stretch the pressure spring 43 and place the transducer 39 inside the support sleeve 37. Then rotate the rotating block 44 so that it rotates below the sliding plate 42. Then release the rotating block 44. At this time, the rotating block 44 and the sliding plate 42 will push the transducer 39 under the rebound force of the pressure spring 43, so that the rear end of the transducer 39 is in contact with the concrete surface. At this time, the width of the crack is detected by the two transducers 39.

[0038] After the measurement is completed, the operator first pulls the rotating block 44 away from the transducer 39. At this time, the transducer 39 is removed from the inside of the support sleeve 37. Then, the block 24 is removed from the inside of the suction cup 22. At this time, the pressure inside the suction cup 22 is the same as the external atmospheric pressure. At this time, the fixing plate 1 can be removed directly.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A concrete crack width monitoring device, characterized in that: include: A fixing plate (1) is provided with a support component (2) at its rear end; The detection component (3) is disposed inside the fixed plate (1); A pushing component (4) is disposed on the surface of the detection component (3); The detection component (3) includes a threaded rod (31) rotatably connected inside the fixed plate (1). Both ends of the threaded rod (31) are fixedly connected to handles (32). The surface of the threaded rod (31) is threadedly connected to an internal threaded block (33). The top of the front side of the internal threaded block (33) is fixedly connected to a vertical rod (34). The top of the vertical rod (34) is fixedly connected to a connecting sleeve (35). The rear end of the connecting sleeve (35) is fixedly connected to an electric telescopic rod II (36). The rear end of the electric telescopic rod II (36) is fixedly connected to a support sleeve (37). Both the left and right sides of the rear end of the connecting sleeve (35) are fixedly connected to connecting telescopic rods (38). The inside of the support sleeve (37) is slidably connected to a transducer (39).

2. The concrete crack width monitoring device according to claim 1, characterized in that: The support assembly (2) includes an electric telescopic rod (21) fixedly connected to the rear end of the fixed plate (1). A suction cup (22) is fixedly connected to the rear end of the electric telescopic rod (21). A connecting block (23) is fixedly connected to the surface of the suction cup (22) near the electric telescopic rod (21). A blocking block (24) is fixedly connected to the surface of the connecting block (23).

3. The concrete crack width monitoring device according to claim 2, characterized in that: The front end of the fixed plate (1) is provided with scale lines, and there are four electric telescopic rods (21) respectively located at the four corners of the rear end of the fixed plate (1). The plug (24) is adapted to be inserted into the inside of the suction cup (22).

4. The concrete crack width monitoring device according to claim 1, characterized in that: The left and right ends of the threaded rod (31) pass through the left and right sides of the fixing plate (1) respectively, and the two handles (32) are located outside the left and right sides of the fixing plate (1) respectively.

5. A concrete crack width monitoring device according to claim 1, characterized in that: The internal threaded block (33) is slidably connected inside the fixed plate (1), and the threads inside the two internal threaded blocks (33) are opened in opposite directions.

6. The concrete crack width monitoring device according to claim 1, characterized in that: The end of the connecting telescopic rod (38) away from the connecting sleeve (35) is fixedly connected to the front end of the support sleeve (37), and the rear end of the transducer (39) extends to the rear side of the support sleeve (37).

7. The concrete crack width monitoring device according to claim 1, characterized in that: The pushing assembly (4) includes a crossbar (41) fixedly connected to the front end of the top of the support sleeve (37), a sliding disk (42) fixedly connected to the front end of the crossbar (41), a pressure spring (43) wound around the surface of the crossbar (41), and a rotating block (44) rotatably connected to the surface of the sliding disk (42).

8. A concrete crack width monitoring device according to claim 7, characterized in that: The two ends of the pressure spring (43) are fixedly connected to the near ends of the sliding disk (42) and the support sleeve (37), respectively, and the front end of the rotating block (44) and the transducer (39) are adapted to each other in contact.

Images