An ultrasonic device for detecting defects in concrete
By designing a device that includes an outer frame, an ultrasonic probe holder, a locking device, a ceramic liner, and a scale, the problem of accurately locating the measuring point in the ultrasonic testing of concrete structures was solved, achieving efficient and safe testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN HIGHWAY PLANNING SURVEY DESIGN AND RESEARCH INSTITUTE LTD
- Filing Date
- 2023-04-08
- Publication Date
- 2026-07-10
AI Technical Summary
Existing ultrasonic testing instruments have problems such as difficulty in accurately locating the measuring point, inconvenience in operation, and poor safety in concrete structure testing, which affect the accuracy of test results and the safety of operators.
A device comprising an outer frame, an ultrasonic probe holder, a locking device, a ceramic liner, a locator, and a scale is designed. The device achieves precise positioning and fixation of the ultrasonic probe through a sliding and automatic locking mechanism, and ensures distance measurement accuracy and safety by combining the ceramic liner and the scale pointer.
It improves the testing accuracy and efficiency of ultrasonic testing for concrete defects, ensures operator safety, avoids injuries caused by leakage, and simplifies the process of locating test points.
Smart Images
Figure CN116482222B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete testing technology, specifically to an ultrasonic device for detecting defects in concrete. Background Technology
[0002] Currently, ultrasonic testing is commonly used for non-destructive testing of concrete structures, including crack depth measurement, detection of loose areas and voids, concrete bonding quality, and surface damage layers. Core drilling is used for verification in cases of localized damage. The principle of ultrasonic testing for concrete defects is as follows: Concrete defects refer to those that disrupt the continuity and integrity of concrete, reducing its strength and durability to a certain extent, such as loose areas, voids, cracks, or inclusions. When the basic conditions of the concrete being tested are consistent, the acoustic parameters such as sound velocity, amplitude, and dominant frequency at each measuring point are relatively stable and generally do not show significant differences. However, if a certain area of concrete contains defects such as loose areas, voids, cracks, or inclusions, the ultrasonic waves transmitted through that area will show a significantly longer duration (or decreased sound velocity), significantly reduced amplitude and frequency, and waveform distortion compared to other normal areas. The defects in the concrete are then determined based on the relative changes and characteristics of these acoustic parameters.
[0003] In current ultrasonic testing equipment, the layout of measuring points is hand-drawn on the concrete surface using tools such as markers and measuring tapes. The ultrasonic transducer contacts the concrete structure through a coupling medium, and the operator holds the transducer firmly against the concrete surface. During testing, when the center distance of the ultrasonic probe needs to be measured, the measuring point marks are easily smudged by the coupling agent, and the measuring point positions are obscured by the probe. When the inner edge distance of the ultrasonic probe needs to be measured, the on-site markings are rough, inaccurate, and easily smudged. Furthermore, the operator's hand position is prone to slippage, and it is common to misjudge the relative position during measurement. This results in large regression line errors when testing defect-free concrete structures, and when testing for defects, inaccurate distances and poor coupling render many measuring points unusable, severely affecting the accuracy of test results and the identification of structural defects. Even worse, during normal calibration cycles, due to transportation, operational errors, or years of neglect, leakage at the transducer connectors has occurred, causing operators to be struck by pulsed currents and resulting in injuries. Therefore, the purpose of this invention is to ensure the safety of test personnel, improve test accuracy and efficiency, and thus improve test quality. Summary of the Invention
[0004] The present invention aims to solve the above-mentioned technical problems by providing a safe, easy-to-adjust, accurate, and efficient device for detecting defects in concrete structures.
[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:
[0006] An ultrasonic device for detecting defects in concrete, comprising:
[0007] The outer frame is a rectangular frame composed of long arms and short arms;
[0008] An ultrasonic probe holder, comprising multiple ultrasonic probe holders slidably disposed within an outer frame.
[0009] The locking device is located on both sides of the ultrasonic probe holder, and the ultrasonic probe holder is locked by the automatic locking device after sliding to a certain position.
[0010] A ceramic liner is installed inside the ultrasonic probe holder, and two reading pointers are provided at the upper end of the ultrasonic probe holder.
[0011] Positioners, two of which can be mounted on opposite sides of two long arms and are rotatable by an angle;
[0012] Automatic positioning plates, two of which are mounted on opposite sides of two long arms and limit the positioner;
[0013] A scale is set on the upper end face of the long arm near the reading pointer side of the ultrasonic probe holder.
[0014] Preferably, the inner side of the outer frame is provided with a sliding groove, and the two sides of the ultrasonic probe holder are provided with sliders that cooperate with the sliding groove.
[0015] Preferably, the locking device includes grooves on both sides of the ultrasonic probe holder, a spring is provided inside the groove, and a limiting block is provided at the other end of the spring and the limiting block is located in the slide groove.
[0016] Preferably, the side of the limiting block away from the first spring is an arc-shaped structure, and the opposite surfaces of the two sliding grooves are provided with arc-shaped limiting grooves for use with the limiting block. The first spring pushes the limiting block into the arc-shaped limiting groove to achieve automatic locking.
[0017] Preferably, the automatic positioning plate includes a limiting post disposed on the long arm, a second spring is provided on the outer side of the limiting post and one end of the second spring is fixedly connected to the long arm, and a fixing plate is provided on the other end of the second spring, and a through hole is provided on the fixing plate to cooperate with the limiting post.
[0018] Preferably, the locator is provided with a limiting groove at a position 90° or 180° rotated according to the coordinates of the long arm, and the fixing plate is provided with a protrusion at one end near the locator to cooperate with the limiting groove.
[0019] Preferably, the extension line of one of the reading pointers is located at the center of the ultrasonic probe holder, and the extension line of the other reading pointer is tangent to the inner diameter of the ceramic liner.
[0020] Preferably, a movable groove is provided inside one side of the short arm, and a movable handle is hinged in the movable groove.
[0021] With the above structure, the present invention has the following advantages:
[0022] This invention, by placing the ultrasonic probe within a ceramic liner, effectively prevents operator injury due to transducer leakage. The ultrasonic probe is slidably mounted within the outer frame, and after sliding to a certain position, it is automatically locked in place. The distance can be adjusted to any desired level, and the reading is directly taken from a scale. When the required distance is reached, the automatic locking device fixes the probe in place. After accurate positioning using the scale reading, testing can begin. This eliminates the need for manual measurement, marking, and positioning, thus improving testing accuracy and efficiency.
[0023] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the structure of the present invention.
[0026] Figure 2 This is the front view of the outer frame of the present invention.
[0027] Figure 3 This is a front view of the locator of the present invention from another direction.
[0028] Figure 4 This is a cross-sectional view of point AA of the present invention.
[0029] Figure 5 This is a partially enlarged view of the present invention.
[0030] Figure 6 This is a schematic diagram of the ultrasonic probe holder of the present invention.
[0031] Figure 7 This is a top view of the ultrasonic probe holder of the present invention.
[0032] Figure 8 This is a cross-sectional view of point BB of the present invention.
[0033] Figure 9 This is a schematic diagram of the scale of the present invention.
[0034] Figure 10 This is a top view of the scale of this invention.
[0035] As shown in the figure: 1. Outer frame; 2. Ultrasonic probe holder; 3. Locking device; 3.1. Groove; 3.2. Spring 1; 3.3. Limiting block; 3.4. Arc-shaped limiting groove; 4. Ceramic liner; 5. Reading pointer; 6. Positioner; 6.1. Limiting groove; 7. Automatic positioning piece; 7.1. Limiting post; 7.2. Spring 2; 7.3. Fixing piece; 7.4. Through hole; 8. Scale; 9. Movable handle. Detailed Implementation
[0036] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0038] The present invention will now be described in further detail with reference to the full text.
[0039] Combined with appendix Figures 1-10 An ultrasonic device for detecting defects in concrete includes an outer frame 1, an ultrasonic probe holder 2, a locking device 3, a ceramic liner 4, a locator 6, an automatic positioning plate 7, and a scale 8.
[0040] like Figure 1 and Figure 2 As shown, the outer frame 1 is a rectangular frame composed of long arms and short arms. In specific implementation, the long arms and short arms can be fixed together by bolts, or they can be connected together by welding or other methods.
[0041] like Figure 1 , Figure 4 and Figure 6 As shown, multiple ultrasonic probe holders 2 are slidably disposed within the outer frame 1. In a specific implementation, two ultrasonic probe holders 2 can be provided. The inner side of the outer frame 1 is provided with a sliding groove 1.1, and the two sides of the ultrasonic probe holders 2 are provided with sliders 2.1 that cooperate with the sliding groove. The ultrasonic probe holders 2 can be manually pushed to slide within the sliding groove 1.1 via the sliders.
[0042] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the locking device 3 is located on both sides of the ultrasonic probe holder 2. After the ultrasonic probe holder 2 slides to a certain position, it is locked by the automatic locking device 3. The side of the limiting block 3.3 away from the spring 3.2 is an arc-shaped structure. The opposite surfaces of the two sliding grooves 1.1 are provided with arc-shaped limiting grooves 3.4 that cooperate with the limiting block 3.3. The spring 3.2 pushes the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve locking. Because the side of the limiting block 3.3 away from the spring 3.2 is an arc-shaped structure and cooperates with the arc-shaped limiting groove 3.4, when the ultrasonic probe holder 2 can be manually pushed to slide in the sliding groove 1.1 through the slider, the spring 3.2 automatically retracts, causing the ultrasonic probe holder 2 to move. When it reaches the appropriate position, the spring 3.2 extends and pushes the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve limiting.
[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the ceramic liner 4 is installed inside the ultrasonic probe holder 2. The upper end of the ultrasonic probe holder 2 has two reading pointers 5. The two locators 6 can be installed on opposite sides of the two long arms, and the locators 6 are rotatable. When performing cross-crack detection, the locators 6 can be used to locate the crack. After the ultrasonic probe holder 2 is locked in the corresponding position, it is pressed against the test position for testing. This ultrasonic testing device for concrete structure defects can accurately locate the test area without drawing test area lines, and tightly couple the ultrasonic probe for use in detecting defects in concrete structures.
[0044] like Figure 2 , Figure 3 and Figure 5As shown, the two automatic positioning plates 7 are installed on the opposite sides of the two long arms and limit the positioning device 6; the positioning device 6 is provided with a limiting groove 6.1 at a position rotated 90° or 180° with respect to the coordinates of the long arms; the fixing plate 7.3 is provided with an arc-shaped protrusion at one end near the positioning device 6 to cooperate with the limiting groove 6.1. In actual use, the positioning device 6 rotates on the outside of the long arms via the shaft. The positioning device 6 is provided with a limiting groove 6.1 at a position rotated 90° or 180° with respect to the coordinates of the long arms. The protrusion of the fixing plate 7.3 is installed in the limiting groove 6.1 by the action of the spring 7.2 to achieve the limiting.
[0045] like Figure 9 As shown, the scale 8 is set on the upper end face of the long arm and the reading is read directly on the scale 8. The scale 8 is divided into two size marks, one of which increases by 25mm from the middle to both sides, and the other increases by 1mm from one side to the other side. At the same time, the locator 6 is located at the starting point of the scale that increases by 25mm from the middle to both sides.
[0046] Figure 5 As shown, the automatic positioning plate 7 includes a limiting post 7.1 mounted on the long arm. A second spring 7.2 is provided on the outer side of the limiting post 7.1, with one end of the second spring 7.2 fixedly connected to the long arm. A fixing plate 7.3 is provided on the other end of the second spring 7.2. A through hole 7.4 is provided on the fixing plate 7.3 to cooperate with the limiting post 7.1. The fixing plate can be manually pulled...
[0047] 7.3 Moves outside the limiting post 7.1 through the through hole 7.4. The spring 7.2 stretches and moves the fixing piece 7.3 away from the locator 6, thus unlocking. Conversely, the protrusion of the fixing piece 7.3 is installed in the limiting groove 6.1 by the action of the spring 7.2, thus limiting the position.
[0048] One of the reading pointers 5 has an extension line located at the center of the ultrasonic probe holder 2, and the other reading pointer 5 has an extension line tangent to the inner diameter of the ceramic liner 4.
[0049] Figure 1 As shown, a movable groove is provided inside one side of the short arm, and a movable handle 9 is hinged in the movable groove. The movable handle 9 can rotate out of the movable groove and can be installed in the required position during specific implementation, or it can be easily carried by hand.
[0050] In actual use, the ultrasonic probes are all placed in the ceramic liner 4 to ensure the safety of the test operators.
[0051] 1. Single-sided flat measurement of cracks in concrete structures:
[0052] When testing data without crossing joints, the method of use is as follows: First, place the device at the location in the concrete to be tested. Rotate the two locators 6 on the long arm of the outer frame 1 180° according to the coordinates of the long arm and lock them in the limiting groove 6.1. Then, manually push the two ultrasonic probe holders 2 to slide in the slide groove 1.1 through the slider. The spring 3.2 will automatically retract, allowing the two ultrasonic probe holders 2 to move back and forth in the slide groove 1.1. When they reach the appropriate position, the spring 3.2 will extend and push the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve the limiting. The reading is obtained by reading the distance between the extended line of the reading pointer 5 and the inner diameter of the ceramic liner 4 on the scale 8, which is 1mm apart. The difference between the readings of the extended line of the reading pointer 5 of the two probe holders 2 and the inner diameter of the ceramic liner 4 is the test distance. After applying coupling agent to the end face of the ultrasonic probe, press the device to test the data. Repeat the above steps when you need to test the next distance.
[0053] When testing cross-crack data, the method of use is as follows: First, place the device at the location in the concrete to be tested. Rotate the two locators 6 on the long arm of the outer frame 1 by 90° according to the coordinates of the long arm and lock them in the limiting groove 6.1. The conical heads of the two locators 6 are stuck on the crack, so that the device always remains perpendicular to the crack in the plane direction. Then, manually push the two ultrasonic probe holders 2 to slide through the slider. The spring 3.2 automatically retracts, so that the two ultrasonic probe holders 2 move symmetrically with respect to the two locators 6 in the slide groove 1.1. Once the device reaches the appropriate position, the spring 3.2 will extend and push the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve the limiting. The reading on the scale 8 corresponding to the reading pointer 5 whose extension line is tangent to the inner diameter of the ceramic liner 4 is 25mm apart. The sum of the readings of the reading pointers 5 whose extension lines are tangent to the inner diameter of the ceramic liner 4 is the test distance. After applying coupling agent to the end face of the ultrasonic probe, the device can be pressed to obtain the test data. When the next distance measurement needs to be tested, the above steps are repeated.
[0054] 2. Double-sided oblique measurement of cracks in concrete structures:
[0055] First, two sets of this device are placed at the required testing positions on two opposite parallel surfaces of the concrete structure. The two locators 6 on the long arm of the outer frame 1 are rotated 180° according to the coordinates of the long arm and locked in the limiting groove 6.1. Then, the two ultrasonic probe holders 2 are manually pushed to slide in the slide groove 1.1 via the slider. The spring 3.2 automatically retracts, allowing the two ultrasonic probe holders 2 to move back and forth in the slide groove 1.1. When they reach the appropriate position, the spring 3.2 extends and pushes the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve limiting. The reading is obtained by reading the scale 8 at a distance of 1mm between the extended line of the reading pointer 5 and the center of the ultrasonic probe holder 2. The difference between the readings of the extended lines of the reading pointers 5 of the two probe holders 2 and the center of the ultrasonic probe holder 2 is the test distance. During the test, the test distance of the two sets of this device is always kept consistent. After applying coupling agent to the end face of the ultrasonic probe, the device is pressed to obtain the test data. The above steps are repeated when the next distance measurement is required.
[0056] 3. Concrete surface damage layer test:
[0057] First, place the device at the location on the concrete to be tested. Rotate the two locators 6 on the long arm of the outer frame 1 180° according to the coordinates of the long arm and lock them in the limiting groove 6.1. Then, manually push the two ultrasonic probe holders 2 to slide in the slide groove 1.1 through the slider. The spring 3.2 automatically retracts, allowing the two ultrasonic probe holders 2 to move back and forth in the slide groove 1.1. When they reach the appropriate position, the spring 3.2 extends and pushes the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve the limiting. The reading is obtained by reading the distance between the extended line of the reading pointer 5 and the inner diameter of the ceramic liner 4 on the scale 8, which is 1mm apart. The difference between the readings of the extended line of the reading pointer 5 of the two probe holders 2 and the inner diameter of the ceramic liner 4 is the test distance. After applying coupling agent to the end face of the ultrasonic probe, press the device to obtain the test data. Repeat the above steps when you need to test the next distance.
[0058] 4. Testing of concrete bonding surface quality, loose areas, and voids:
[0059] First, two sets of this device are placed at the required testing positions on two opposite parallel surfaces of the concrete structure. The two locators 6 on the long arm of the outer frame 1 are rotated 180° according to the coordinates of the long arm and locked in the limiting groove 6.1. Then, the two ultrasonic probe holders 2 are manually pushed to slide in the slide groove 1.1 via the slider. The spring 3.2 automatically retracts, allowing the two ultrasonic probe holders 2 to move back and forth in the slide groove 1.1. When they reach the appropriate position, the spring 3.2 extends and pushes the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve limiting. The reading is obtained by reading the scale 8 at a distance of 1mm between the extended line of the reading pointer 5 and the center of the ultrasonic probe holder 2. The difference between the readings of the extended lines of the reading pointers 5 of the two probe holders 2 and the center of the ultrasonic probe holder 2 is the test distance. During the test, the test distance of the two sets of this device is always kept consistent. After applying coupling agent to the end face of the ultrasonic probe, the device is pressed to obtain the test data. The above steps are repeated when the next distance measurement is required.
[0060] This ultrasonic testing device for concrete structure defects can accurately locate the test area and cracks without drawing test area lines. It is tightly coupled with an ultrasonic probe for ultrasonic testing of concrete structure defects.
[0061] Working principle of the invention:
[0062] First, place the device at the desired location on the concrete surface. Then, manually push the ultrasonic probe holder 2 to slide within the groove 1.1 via the slider. Spring 3.2 automatically retracts, moving the ultrasonic probe holder 2. Once in the correct position, spring 3.2 extends, pushing the limiting block 3.3 into the arc-shaped limiting groove 3.4 to achieve positioning. Read the scale 8 directly using the reading pointer 5. When the center distance of the ultrasonic probe needs to be measured, read the reading where the extension of the reading pointer 5 is at the center of the ultrasonic probe holder 2. When the inner edge distance of the ultrasonic probe needs to be measured, read the reading where the extension of the reading pointer 5 is tangent to the inner diameter of the ceramic liner 4. Once the required distance is reached, the device automatically locks the position. After accurate positioning using the scale reading, testing can begin. This eliminates the need for manual measurement, marking, and positioning, thus improving testing efficiency and accuracy. When inspecting cracks across concrete structures, two locators 6 of this device can be used to locate the crack, ensuring the test distance is perpendicular to the crack direction. After the ultrasonic probe holder 2 is locked in the corresponding position, it can be pressed into the test location to begin testing. When testing concrete structural defects on both sides is required, two sets of this device can be arranged on opposite sides of the structure being tested using the above method. When the test range is expanded, simply move the device in parallel and use the same method for testing. This ultrasonic testing device for concrete structural defects can accurately locate the test area without drawing test area lines, and tightly couple the ultrasonic probe for use in detecting concrete structural defects.
[0063] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.
Claims
1. An ultrasonic device for detecting defects in concrete, characterized in that, include: The outer frame (1) is a rectangular frame composed of a long arm and a short arm; An ultrasonic probe holder (2) is provided, and multiple ultrasonic probe holders (2) are slidably disposed within the outer frame (1). Locking device (3) is provided on both sides of ultrasonic probe holder (2), and the ultrasonic probe holder (2) is locked by automatic locking device (3) after sliding to a certain position. Ceramic liner (4), the ceramic liner (4) is set inside the ultrasonic probe holder (2), and the upper end of the ultrasonic probe holder (2) is provided with two reading pointers (5). Positioner (6), two of the positioners (6) are installed on the opposite sides of two long arms, and the positioners (6) are provided with limiting grooves (6.1) at positions rotated 90° or 180° according to the coordinates of the long arms; Automatic positioning plates (7), two of the automatic positioning plates (7) are installed on the opposite sides of the two long arms and limit the positioner (6); The scale (8) is set on the upper surface of the long arm of the outer frame (1) near the reading pointer (5).
2. The ultrasonic testing device for concrete defects according to claim 1, characterized in that: The outer frame (1) has a sliding groove (1.1) on its inner side, and the ultrasonic probe holder (2) has sliders (2.1) on both sides that cooperate with the sliding groove.
3. The ultrasonic testing device for concrete defects according to claim 2, characterized in that: The locking device (3) includes grooves (3.1) on both sides of the ultrasonic probe holder (2). A spring (3.2) is provided inside the groove (3.1). A limiting block (3.3) is provided at the other end of the spring (3.2) and the limiting block (3.3) is located in the slide groove (1.1).
4. The ultrasonic testing device for concrete defects according to claim 3, characterized in that: The side of the limiting block (3.3) away from the spring (3.2) is an arc-shaped structure. The opposite surfaces of the two slides (1.1) are provided with arc-shaped limiting grooves (3.4) for use with the limiting block (3.3). The spring (3.2) pushes the limiting block (3.3) into the arc-shaped limiting groove (3.4) to achieve automatic locking.
5. The ultrasonic testing device for concrete defects according to claim 1, characterized in that: The automatic positioning piece (7) includes a limiting post (7.1) set on the long arm. A second spring (7.2) is provided on the outside of the limiting post (7.1), and one end of the second spring (7.2) is fixedly connected to the long arm. A fixing piece (7.3) is provided on the other end of the second spring (7.2). A through hole (7.4) is opened on the fixing piece (7.3) to cooperate with the limiting post (7.1).
6. The ultrasonic testing device for concrete defects according to claim 1, characterized in that: One of the reading pointers (5) has an extension line located at the center of the ultrasonic probe holder (2), and the other reading pointer (5) has an extension line tangent to the inner diameter of the ceramic liner (4).
7. The ultrasonic testing device for concrete defects according to claim 1, characterized in that: The short arm has a movable groove inside one side, and a movable handle (9) is hinged in the movable groove.