Concrete defect detection device based on elastic waves

Abstract

The utility model discloses an elastic wave-based concrete defect detection device which comprises a shell, an installation box is arranged in the shell, a detection machine body is arranged in the installation box, an excitation detection assembly is arranged at the bottom of the detection machine body, and a display processing device is fixedly connected to the top of the shell. And the display processing device is electrically connected with the detection machine body. The utility model relates to the technical field of concrete detection, and in the concrete defect detection device based on elastic waves, through the cooperation of the shell, the detection machine body, the excitation detection assembly and the cleaning device, pebbles on the ground can be automatically cleaned during concrete detection, so that the phenomenon that the pebbles on the ground are damaged during detection can be avoided. The vibration of the pebbles affects the accuracy of the overall detection data, and meanwhile, the situation that the pebbles hurt and damage the equipment when the excitation detection assembly presses the top of the ground can be avoided, so that the use safety of the equipment is also ensured.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically a concrete defect detection device based on elastic waves. Background Technology

[0002] Concrete defect detection is a crucial method for assessing the presence of quality issues such as voids, cracks, honeycombing, and segregation within or on the surface of a structure. Concrete elastic wave testing is a non-destructive testing technique that utilizes the propagation characteristics of elastic waves (such as stress waves and ultrasonic waves) within concrete to evaluate its internal quality, defects, and mechanical properties. This method assesses the uniformity, cracks, voids, strength, and dynamic elastic modulus of concrete based on changes in parameters such as wave velocity, amplitude, frequency, and waveform.

[0003] Public document 202420741165.3 describes an exciter for detecting internal defects in concrete using elastic wave CT. The exciter includes a base plate with a support mechanism on one side. This support mechanism comprises a limiting rod, a limiting plate, a rotating block, a threaded plate, and a threaded rod. The outer wall of the limiting rod is fixedly connected to the inner wall of the limiting plate, one end of the limiting rod is fixedly connected to one side of the rotating block, and one side of the base plate is fixedly connected to one end of the threaded plate. This invention provides better support and fixation for the device, solving the problem that in actual use, the device is supported by three slender exciter adjustment rods, but the limited contact area between the rods and the ground makes it prone to shaking in windy or other inclement weather, posing a safety hazard. This invention improves the accuracy of the exciter's detection, increases work efficiency, and is practical and suitable for widespread promotion and use.

[0004] Current concrete internal defect detection devices require workers to clean the concrete floor before use, as the devices do not have a self-cleaning function. This results in high workload for workers and significantly impacts overall detection efficiency when conducting large-scale concrete floor inspections, causing inconvenience for workers. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a concrete defect detection device based on elastic waves. This solves the problem that current concrete internal defect detection devices require workers to clean the concrete surface before use, as the devices lack self-cleaning capabilities. This results in high workload for workers and significantly impacts overall detection efficiency when conducting large-scale concrete surface inspections, causing inconvenience for workers.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a concrete defect detection device based on elastic waves, comprising a housing, an installation box inside the housing, a detection body inside the installation box, an excitation detection component at the bottom of the detection body, a display processing device fixedly connected to the top of the housing and electrically connected to the detection body, and a cleaning device on one side of the installation box, the cleaning device comprising: a housing fixedly connected to the top of the housing away from the display processing device; a fan fixedly connected to the inside of the housing; a filter screen fixedly connected to the top of the housing by bolts; a retractable hose connected to the output end of the fan, with one end extending to the upper part of the inside of the housing; and a conduit connected to the end of the retractable hose and fixedly connected to the bottom of the installation box; wherein, the fan delivers air filtered by the filter screen through the retractable hose and the conduit, and then blows it onto the ground to clean the gravel.

[0007] Preferably, the lower part of the conduit is connected to multiple high-pressure nozzles.

[0008] Preferably, handles are fixedly connected to the upper sides of both sides of the outer wall of the housing, casters are fixedly connected to the bottom of the housing, and a driving device is provided on the upper sides of both sides of the inner wall of the housing. The driving device includes: multiple electric push rods, all fixedly connected to the top of the inner wall of the housing; multiple sliding plates, each fixedly connected to the output end of the multiple electric push rods; and multiple slide rails, each slidably engaged with the inner wall of the multiple sliding plates, and all fixedly connected to the inner wall of the housing. The electric push rods change the position and height of the detection body by changing the position of the sliding plate on the outer wall of the slide rail.

[0009] Preferably, the bottom of the mounting box is provided with a protective device, which includes: multiple pressure sensors, all fixedly connected to the bottom of the mounting box and electrically connected to the display processing device; multiple vertical rods, each fixedly connected to the bottom of the multiple pressure sensors; multiple sleeves, each sleeved under the outer wall of the multiple vertical rods; multiple springs, each sleeved under the outer wall of the multiple vertical rods, with their tops and bottoms fixedly connected to the outer walls of the multiple pressure sensors and the sleeves, respectively; and two horizontal rods, each fixedly connected to the bottom of the multiple sleeves. The springs provide cushioning and protection when the excitation detection component contacts the ground, and the pressure sensors detect the pressure magnitude of the excitation detection component.

[0010] Preferably, a rubber pad is fixedly connected to the bottom of the crossbar.

[0011] Beneficial effects

[0012] This invention provides a concrete defect detection device based on elastic waves. It offers the following advantages: Through the cooperation of the outer shell, detection body, excitation and detection components, and cleaning device, this concrete defect detection device can autonomously clean small stones from the ground during concrete testing. This avoids the vibration of small stones affecting the accuracy of the overall detection data. It also prevents small stones from damaging the device when the excitation and detection components are pressed against the top of the ground, thus ensuring the safety of the device during use.

[0013] By combining the drive device and the protective device, the position and height of the excitation detection component can be freely adjusted. Then, when the excitation detection component touches the ground, the force of the spring and the pressure sensor are used to monitor the force on the excitation detection component. This ensures that the excitation detection component can fit better with the ground and also avoids damage to the excitation detection component due to excessive pressure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A sectional view;

[0016] Figure 3 for Figure 2 A schematic diagram of the crossbar, spring, and pressure sensor;

[0017] Figure 4 for Figure 2 A structural diagram of the outer shell, housing, and fan.

[0018] In the diagram: 1. Outer shell; 2. Cleaning device; 21. Housing; 22. Fan; 23. Filter screen; 24. Telescopic hose; 25. Conduit; 251. High-pressure nozzle; 3. Protective device; 31. Pressure sensor; 32. Vertical rod; 33. Spring; 34. Sleeve; 35. Horizontal rod; 351. Rubber pad; 4. Drive device; 41. Electric push rod; 42. Slide plate; 43. Slide rail; 5. Mounting box; 6. Excitation detection component; 7. Display processing device; 8. Handle; 9. Casters; 10. Detection body. Detailed Implementation

[0019] 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.

[0020] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0021] Current concrete internal defect detection devices require workers to clean the concrete floor before use, as the devices do not have a self-cleaning function. This results in high workload for workers and significantly affects overall detection efficiency when conducting large-scale concrete floor inspections, thus causing inconvenience for workers.

[0022] In view of this, the present invention provides a concrete defect detection device based on elastic waves. Through the cooperation of the shell, detection body, excitation detection component and cleaning device, small stones on the ground can be automatically cleaned during concrete detection. This can avoid the vibration of small stones affecting the accuracy of the overall detection data during the detection process. At the same time, it can also avoid the small stones from damaging the equipment when the excitation detection component is pressed on the top of the ground, thus ensuring the safety of the equipment.

[0023] Example 1: By Figure 1 , 2 As shown in section 4, a concrete defect detection device based on elastic waves includes a housing 1, an installation box 5 inside the housing 1, a detection body 10 inside the installation box 5, an excitation detection component 6 at the bottom of the detection body 10, a display processing device 7 fixedly connected to the top of the housing 1, and the display processing device 7 electrically connected to the detection body 10. A cleaning device 2 is provided on one side of the installation box 5. The cleaning device 2 includes: a housing 21 fixedly connected to the top of the housing 1 away from the display processing device 7; a fan 22 fixedly connected to the inside of the housing 21; a filter screen 23 fixedly connected to the top of the housing 21 by bolts; a retractable hose 24 connected to the output end of the fan 22, with one end extending to the upper part of the inside of the housing 1; and a conduit 25 connected to the end of the retractable hose 24 and fixedly connected to the bottom of the installation box 5. The fan 22 delivers the air filtered by the filter screen 23 through the retractable hose 24 and the conduit 25, and then blows it onto the ground to clean the gravel.

[0024] In the specific implementation process, it is worth noting that the excitation detection component 6 has at least one striking mechanism and a signal receiving sensor, so that the striking mechanism can strike the ground, the signal receiving sensor can receive the elastic waves of the concrete ground, and then transmit them to the inside of the detection body 10. Finally, the detection body 10 transmits the signal to the inside of the display processing device 7, and the display processing device 7 performs signal processing and display. This case does not improve the detection principle, equipment connection method and operation steps, and this is the existing well-known technology of those skilled in the art. Those skilled in the art should interpret it in a broad sense. The filter screen 23 can filter and block dust in the air, thereby preventing air from entering the inside of the fan 22 and causing damage to the fan 22. The model of the fan 22 and the mesh size of the filter screen 23 are not limited, as long as they meet the usage requirements.

[0025] Furthermore, multiple high-pressure nozzles 251 are connected to the lower part of the conduit 25;

[0026] In the specific implementation process, it is worth noting that the high-pressure nozzle 251 can increase the airflow velocity, thereby improving the quality of cleaning;

[0027] Specifically, when using the elastic wave-based concrete defect detection device, the operator first moves the device to the location to be detected, then turns on the blower 22. The blower 22 blows the air filtered by the filter screen 23 into the interior of the retractable hose 24, which is then guided through the duct 25 and sprayed out from the high-pressure nozzle 251. The ground can then be cleaned. After that, the excitation detection component 6 can be used for detection, and finally, the display processing device 7 is used for data analysis and display.

[0028] Example 2: From Figure 1 and 2 It is known that handles 8 are fixedly connected to the upper sides of the outer wall of the outer shell 1, casters 9 are fixedly connected to the bottom of the outer shell 1, and drive devices 4 are provided on the upper sides of the inner side of the outer shell 1. The drive devices 4 include: multiple electric push rods 41, all fixedly connected to the top of the inner wall of the outer shell 1; multiple sliding plates 42, each fixedly connected to the output end of the multiple electric push rods 41; and multiple slide rails 43, each slidingly engaged with the inner wall of the multiple sliding plates 42, and all fixedly connected to the inner wall of the outer shell 1. The electric push rods 41 change the position and height of the detection body 10 by changing the position of the sliding plates 42 on the outer wall of the slide rails 43.

[0029] In the specific implementation process, it is worth noting that during the inspection, the staff can use the handle 8 to press down on the concrete defect detection device based on elastic waves, thereby ensuring the stability during the inspection. The design of the caster wheel 9 makes it easier for the staff to move the position of the concrete defect detection device based on elastic waves. The model of the electric push rod 41 is not limited, as long as it meets the usage requirements. The electric push rod 41 can change the position of the slide plate 42 on the surface of the slide rail 43, thereby changing the position and height of the detection body 10 and the excitation detection component 6.

[0030] Specifically, based on the above embodiment one, when testing is required, the staff will turn on the electric push rod 41, which will drive the slide plate 42 to move along the outer wall of the slide rail 43, thereby changing the position of the mounting box 5, and thus changing the position and height of the testing body 10 and the excitation detection component 6. When the excitation detection component 6 contacts the ground and applies a certain pressure, the electric push rod 41 can be turned off.

[0031] Example 3: From Figure 1 , 2 As shown in section 3, a protective device 3 is provided at the bottom of the mounting box 5. The protective device 3 includes: multiple pressure sensors 31, all fixedly connected to the bottom of the mounting box 5 and electrically connected to the display processing device 7; multiple vertical rods 32, each fixedly connected to the bottom of the multiple pressure sensors 31; multiple sleeves 34, each sleeved under the outer wall of the multiple vertical rods 32; multiple springs 33, each sleeved under the outer wall of the multiple vertical rods 32, with the top and bottom fixedly connected to the outer walls of the multiple pressure sensors 31 and the sleeves 34 respectively; and two horizontal rods 35, each fixedly connected to the bottom of the multiple sleeves 34. The springs 33 provide buffer protection when the excitation detection component 6 contacts the ground, and the pressure sensors 31 detect the pressure of the excitation detection component 6.

[0032] In the specific implementation process, it is worth noting that the model of pressure sensor 31 is not limited, as long as it meets the usage requirements. Pressure sensor 31 can detect the elastic force of spring 33 when spring 33 is compressed, that is, the pressure applied to the ground. Before operation, the operator should first record the magnitude of the elastic force applied by spring 33 to pressure sensor 31 when the excitation detection component 6 just contacts the ground, and then record the data of pressure sensor 31. Then, the excitation detection component 6 is pressed down again, and the difference between the pressure sensor 31 before and after can be used to determine the pressure between the excitation detection component 6 and the ground. It should be noted that the operator should replace spring 33 regularly to avoid the problem of decreased quality due to changes in the elastic coefficient of spring 33 after long-term use. The operator should also take dust prevention measures for pressure sensor 31, excitation detection component 6, detection body 10, display processing device 7 and electric push rod 41. The specific methods are not limited, as long as they meet the usage requirements. Pressure sensor 31 can transmit the detection signal to the inside of display processing device 7, and then the display processing device 7 performs information analysis and display.

[0033] Furthermore, a rubber pad 351 is fixedly connected to the bottom of the crossbar 35;

[0034] In the specific implementation process, it is worth noting that the rubber pad 351 can increase the friction between the crossbar 35 and the ground, thereby improving the stability during operation;

[0035] Specifically, based on the above embodiments one and two, when the driving device 4 adjusts the position of the detection body 10, when the horizontal bar 35 contacts the ground, due to the reaction force, the sleeve 34 can be driven to move along the outer wall of the vertical bar 32, and the spring 33 is compressed at the same time. At this time, the pressure sensor 31 can detect the elastic force of the spring 33. When the pressure sensor 31 reaches a certain value, that is, when the excitation detection component 6 contacts the ground, the driving device 4 is controlled again to adjust the excitation detection component 6 to move downward. Then, the pressure sensor 31 is used to detect subsequent data. The pressure intensity between the excitation detection component 6 and the ground is judged by the difference between the two values. When the difference is appropriate, the driving device 4 can be turned off, and then the detection work can be carried out.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete defect detection device based on elastic waves, comprising a housing (1), characterized in that: An installation box (5) is provided inside the outer casing (1), and a detection body (10) is installed inside the installation box (5). An excitation detection component (6) is provided at the bottom of the detection body (10). A display processing device (7) is fixedly connected to the top of the outer casing (1), and the display processing device (7) is electrically connected to the detection body (10). A cleaning device (2) is provided on one side of the installation box (5). The cleaning device (2) includes: The housing (21) is fixedly connected to the top of the outer shell (1) on the side away from the display processing device (7); The fan (22) is fixedly connected to the inside of the housing (21); The filter screen (23) is fixedly connected to the top of the housing (21) by bolts; A retractable hose (24) is connected to the output end of the fan (22), and one end extends to the upper part of the inner side of the housing (1); The conduit (25) is connected to the end of the retractable hose (24) and is fixedly connected to the bottom of the mounting box (5); The blower (22) delivers the air filtered by the filter screen (23) through the retractable hose (24) and the duct (25), and then blows it onto the ground to clean up the gravel.

2. The concrete defect detection device based on elastic waves according to claim 1, characterized in that: Multiple high-pressure nozzles (251) are connected to the lower part of the conduit (25).

3. The concrete defect detection device based on elastic waves according to claim 1, characterized in that: Handles (8) are fixedly connected to the upper sides of the outer wall of the outer shell (1), casters (9) are fixedly connected to the bottom of the outer shell (1), and drive devices (4) are provided on the upper sides of the inner sides of the outer shell (1). The drive devices (4) include: Multiple electric push rods (41) are provided, and all of them are fixedly connected to the top of the inner wall of the outer casing (1); Multiple sliding plates (42) are provided and are respectively fixedly connected to the output ends of multiple electric push rods (41); Multiple slide rails (43) are provided, which are respectively slidably engaged with the inner walls of multiple slide plates (42), and are all fixedly connected to the inner wall of the outer shell (1); The electric push rod (41) changes the position height of the detection body (10) by changing the position of the slide plate (42) on the outer wall of the slide rail (43).

4. The concrete defect detection device based on elastic waves according to claim 1, characterized in that: The bottom of the mounting box (5) is provided with a protective device (3), the protective device (3) including: Multiple pressure sensors (31) are provided and are fixedly connected to the bottom of the mounting box (5) and electrically connected to the display processing device (7); Multiple vertical rods (32) are provided and are fixedly connected to the bottom of multiple pressure sensors (31); Multiple sleeves (34) are provided and are respectively sleeved on the lower part of the outer wall of the multiple vertical rods (32); Multiple springs (33) are provided and are respectively sleeved on the outer wall of multiple vertical rods (32), and the top and bottom are respectively fixed to the outer wall of multiple pressure sensors (31) and sleeves (34); Two crossbars (35) are provided and are fixedly connected to the bottom of the plurality of sleeves (34); The spring (33) provides buffer protection when the excitation detection component (6) comes into contact with the ground, and the pressure sensor (31) detects the pressure of the excitation detection component (6).

5. The concrete defect detection device based on elastic waves according to claim 4, characterized in that: A rubber pad (351) is fixedly connected to the bottom of the crossbar (35).

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