Device for detecting strength of building component based on ultrasonic waves

Abstract

The invention discloses a device for detecting the strength of a building component based on ultrasonic waves, the device comprises a workbench and a support frame arranged on the upper end face of the workbench, and an ultrasonic detector is arranged above the workbench and is used for detecting the surface defects and the internal structure of the building component through the ultrasonic waves; a detection point position adjusting assembly is arranged above the ultrasonic detector and connected to the supporting frame through an air cylinder. Through the arrangement of the outer detection point position adjusting assembly, the detection point positions of the ultrasonic detectors can be intermittently adjusted, and the ultrasonic detectors which are momentarily stopped at the detection point positions can be automatically started, so that the ultrasonic detectors can carry out multi-point-position detection on building components; therefore, the problem that the detection accuracy of the building component is affected due to the fact that the part, away from the ultrasonic detector, of the building component receives weak sound waves emitted by the ultrasonic detector because the detection range of the ultrasonic detector on the building component is large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building component strength detection, in particular to a detection device for building component strength based on ultrasonic waves. Background Art

[0002] Strength testing of building components is the process of evaluating the strength of various structural components in a building (such as beams, columns, floor slabs, walls, etc.). This test is designed to ensure that building components can withstand the loads predetermined during design, ensuring the safety and service life of the building. Common strength tests for building components include: 1. Rebound method: Use a rebound instrument to measure the rebound of the concrete surface to evaluate its strength; 2. Ultrasonic testing: Use the propagation speed of ultrasonic waves to measure the density and strength of concrete; 3. Sound wave transmission method: Judge the density and strength of the material by the propagation of sound waves; 4. X-ray / CT scanning: Used to check for internal defects in components.

[0003] At present, when a detection device for the strength of building components based on ultrasound is detecting building components, the ultrasonic detector will conduct an all-round detection of the exterior and interior of the building components directly below it. Since the detection range of the ultrasonic detector is trumpet-shaped, although the ultrasonic detector can detect building components in a larger range, as the sound waves move away from the ultrasonic detector, the sound waves transmitted and received by the ultrasonic detector will weaken, which can easily lead to incorrect judgments on the strength of building components, thereby reducing the detection accuracy of building components. Summary of the invention

[0004] In order to overcome the defects in the prior art, the present invention provides a detection device for the strength of building components based on ultrasound, which solves the problem mentioned in the background art that the traditional detection device for the strength of building components based on ultrasound will result in weak detection signals for parts of the building components far away from the detection center due to large-range detection.

[0005] The technical solution adopted by the present invention to solve its technical problem is: an ultrasonic-based detection device for the strength of building components, including a workbench and a support frame arranged on the upper end surface of the workbench, an ultrasonic detector is arranged above the workbench for detecting surface defects and internal structures of building components through ultrasonic waves, a detection point adjustment component is arranged above the ultrasonic detector, the detection point adjustment component is connected to the support frame through a cylinder, the detection point adjustment component is used to intermittently adjust the detection point of the ultrasonic detector, and the ultrasonic detector that is temporarily stagnant at the detection point can start automatically.

[0006] The above-described detection device for the strength of building components based on ultrasonic waves, wherein the detection point adjustment assembly includes a connection box connected to a cylinder and a disc provided on the lower end surface of the connection box. The disc is a hollow disc. A driving disc and a driven disc are rotatably provided inside the connection box. On one side of the upper end surface of the connection box, a first driving motor is provided, and the output end of the first driving motor is docked with the driving disc.

[0007] The above-described detection device for the strength of building components based on ultrasonic waves, wherein a sinking groove is provided on the upper end surface of the driving disc, and a clamping block is provided at the bottom end inside the sinking groove. The lower end surface of the driven disc is at the same horizontal plane as the sinking groove. A plurality of arc-shaped grooves are provided on the driven disc, and the arc-shaped grooves cooperate with the driving disc.

[0008] The above-described detection device for the strength of building components based on ultrasonic waves, wherein a clamping groove is provided on the driven disc, and the clamping groove is provided between two adjacent arc-shaped grooves. The clamping block on the driving disc can be rotatably clamped in the clamping groove on the driven disc.

[0009] The above-described detection device for the strength of building components based on ultrasonic waves, wherein a rotating block is rotatably provided at the bottom end inside the disc, the driving disc is docked with the rotating block, a moving cross plate is inserted on the rotating block, a slider is provided on one side of the lower end surface of the moving cross plate, and a guiding groove is provided at the bottom end inside the disc. The guiding groove is in a spiral shape, and the slider is slidably connected in the guiding groove.

[0010] The above-described detection device for the strength of building components based on ultrasonic waves, wherein the ultrasonic detector is connected to the slider through a connecting block. On one side of the upper end surface of the connecting block, a start key is provided, and the start key is electrically connected to the ultrasonic detector. A protective cover is provided on the upper end surface of the connecting block, and the protective cover covers the start key.

[0011] The above-described detection device for the strength of building components based on ultrasonic waves, wherein a reset spring is provided on the upper end surface of the connecting block, and the reset spring is outside the ultrasonic detector. A top block is inserted inside the protective cover. A plurality of convex blocks are provided on the lower end surface of the disc, and the plurality of convex blocks are sequentially arranged at the intermittent stopping and detecting positions of the ultrasonic detector. Chamfers are provided at the two bottom corners of the lower end surface of the convex block and at the two side corners of the upper end surface of the top block.

[0012] The above-described detection device for the strength of building components based on ultrasonic waves, wherein a backing plate is provided on the upper end surface of the workbench, and a centering and limiting assembly is provided on the upper end surface of the backing plate. The centering and limiting assembly includes a transmission gear rotatably connected inside the backing plate and a second driving motor provided inside the workbench. The output end of the second driving motor is docked with the transmission gear.

[0013] In the above-described device for detecting the strength of building components based on ultrasonic waves, toothed plates are provided on both sides of the transmission gear. One end of each of the two toothed plates passes through the backing plate. A centering clamp plate is provided on the toothed plate passing through the backing plate. Guide plates are provided on one side of each toothed plate, and one end of each guide plate is inserted into the backing plate.

[0014] In the above-described device for detecting the strength of building components based on ultrasonic waves, mounting plates are provided on the front and rear side walls of the centering clamp plate. A pressing plate is rotatably provided between the two mounting plates. Grooves are formed at two corners of the centering clamp plate away from the toothed plate. A spiral spring is provided in the groove. One end of the spiral spring is connected to the lower end surface of the pressing plate. One end of the pressing plate extends to one side of the upper end surface of the centering clamp plate. An inclined angle is formed at the lower corner of one end of the pressing plate.

[0015] The present invention provides a device for detecting the strength of building components based on ultrasonic waves, having the following beneficial effects: Through the setting of the external detection point adjustment component of the present invention, the detection points of the ultrasonic detector can be adjusted intermittently, and the ultrasonic detector that briefly stops at the detection point can start by itself. In this way, not only can the ultrasonic detector perform multi-point detection on the building component, but also the problem that the part of the building component far from the ultrasonic detector receives weaker sound waves emitted by the ultrasonic detector, which affects the detection accuracy of the building component due to the large detection range of the ultrasonic detector for the building component, can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the first perspective view of the overall structure of the device for detecting the strength of building components based on ultrasonic waves; Figure 2 is the second perspective view of the overall structure of the device for detecting the strength of building components based on ultrasonic waves; Figure 3 is the three-dimensional view of the detection point adjustment component of the device for detecting the strength of building components based on ultrasonic waves; Figure 4 is the exploded view of the detection point adjustment component of the device for detecting the strength of building components based on ultrasonic waves; Figure 5 is for the device for detecting the strength of building components based on ultrasonic waves Figure 4 enlarged view at A in; Figure 6 is the three-dimensional view of the connection between the ultrasonic detector and the slider of the device for detecting the strength of building components based on ultrasonic waves; Figure 7 is the disassembled view of the top block and the protective cover of the device for detecting the strength of building components based on ultrasonic waves; Figure 8Exploded view of the backing plate and the centering clamping plate of the device for detecting the strength of building components based on ultrasonic waves; Figure 9 For the device for detecting the strength of building components based on ultrasonic waves Figure 8 Enlarged view at position B in; Figure 10 Three-dimensional internal view of the transmission gear of the device for detecting the strength of building components based on ultrasonic waves; Figure 11 Three-dimensional view of the connection between the backing plate and the second driving motor of the device for detecting the strength of building components based on ultrasonic waves.

[0017] Explanation of reference numerals: 1. Workbench; 2. Support frame; 3. Ultrasonic detector; 4. Detection point adjustment component; 41. Connection box; 42. Disc; 43. Driving disc; 44. Driven disc; 45. Sinking groove; 46. Engaging block; 47. Arc groove; 48. Engaging groove; 49. First driving motor; 410. Rotating block; 411. Moving cross plate; 412. Guide groove; 413. Slide block; 414. Connection block; 415. Start key; 416. Protective cover; 417. Return spring; 418. Top block; 419. Protruding block; 5. Backing plate; 6. Centering limit component; 61. Transmission gear; 62. Rack; 63. Guide plate; 64. Centering clamping plate; 65. Mounting plate; 66. Pressing plate; 67. Groove; 68. Helical spring; 69. Second driving motor; 7. Cylinder. Detailed implementation manners

[0018] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0019] Please refer to Figure 1 and Figure 2 , the present invention provides a solution: a device for detecting the strength of building components based on ultrasonic waves, including a workbench 1 and a support frame 2 arranged on the upper end surface of the workbench 1. Above the workbench 1, there is an ultrasonic detector 3 for detecting surface defects and internal structures of building components through ultrasonic waves. Above the ultrasonic detector 3, there is a detection point adjustment component 4, and the detection point adjustment component 4 is connected to the support frame 2 through a cylinder 7. The detection point adjustment component 4 is used to intermittently adjust the detection points of the ultrasonic detector 3, and the ultrasonic detector 3 that briefly stops at the detection points can start by itself.

[0020] Among them, the ultrasonic detector 3 is connected to the detection point adjustment component 4, and the air cylinder 7 can control the distance between the ultrasonic detector 3, the detection point adjustment component 4 and the building component.

[0021] Please refer to Figures 3 - 7 , in this embodiment, the detection point adjustment component 4 includes a connection box 41 connected to the air cylinder 7 and a disc 42 provided on the lower end surface of the connection box 41. The disc 42 is a hollow disc. A driving disc 43 and a driven disc 44 are rotatably provided inside the connection box 41. One side of the upper end surface of the connection box 41 is provided with a first driving motor 49, and the output end of the first driving motor 49 is docked with the driving disc 43. A sinking groove 45 is formed on the upper end surface of the driving disc 43, and a clamping block 46 is provided at the bottom end inside the sinking groove 45. The lower end surface of the driven disc 44 is at the same horizontal level as the sinking groove 45. A plurality of arc grooves 47 are formed on the driven disc 44, and the arc grooves 47 cooperate with the driving disc 43. Among them, the setting of the arc grooves 47 makes the driven disc 44 adhere to the driving disc 43 and plays a role in restricting the position of the driven disc 44. A clamping groove 48 is formed on the driven disc 44, and the clamping groove 48 is provided between two adjacent arc grooves 47. The clamping block 46 on the driving disc 43 can be rotatably clamped in the clamping groove 48 on the driven disc 44. Among them, the positions of the clamping groove 48 and the clamping block 46 correspond to each other. A rotating block 410 is rotatably provided at the bottom end inside the disc 42, the driving disc 43 is docked with the rotating block 410, a moving cross plate 411 is inserted on the rotating block 410, the moving cross plate 411 can move horizontally on the rotating block 410, and one side of the lower end surface of the moving cross plate 411 is provided with a slider 413. A guiding groove 412 is formed at the bottom end inside the disc 42, and the guiding groove 412 is in a spiral shape. The slider 413 is slidably connected in the guiding groove 412, and the setting of the guiding groove 412 plays a guiding role in the movement of the slider 413. The ultrasonic detector 3 is connected to the slider 413 through a connecting block 414. A start key 415 is provided on one side of the upper end surface of the connecting block 414, and the start key 415 is electrically connected to the ultrasonic detector 3. A protective cover 416 is provided on the upper end surface of the connecting block 414, and the protective cover 416 covers the start key 415. The setting of the start key 415 can control the start of the ultrasonic detector 3. A return spring 417 is provided on the upper end surface of the connecting block 414, and the return spring 417 is outside the ultrasonic detector 3. A top block 418 is inserted into the protective cover 416. A plurality of convex blocks 419 are provided on the lower end surface of the disc 42, and the plurality of convex blocks 419 are sequentially arranged at the intermittent stop detection positions of the ultrasonic detector 3. Chamfers are formed at the two corners of the lower end surface of the convex block 419 and the two sides of the upper end surface of the top block 418.

[0022] It should be noted that in the present invention, four engaging grooves 48 and four arc grooves 47 are formed on the driven disk 44, so that the angle of rotation of the driven disk 44 for one intermittent rotation is 90 degrees. However, the number of engaging grooves 48 and arc grooves 47 on the driven disk 44 in the present invention is not limited to four. For example, six engaging grooves 48 and six arc grooves 47 can also be formed on the driven disk 44, so that the angle of rotation of the driven disk 44 for one intermittent rotation is 60 degrees.

[0023] During use, the detection point adjustment assembly 4 and the ultrasonic detector 3 are moved to appropriate positions by the cylinder 7, and then the first driving motor 49 is started. The first driving motor 49 drives the driving disk 43 to rotate, and the driving disk 43 drives the engaging block 46 to rotate. When the engaging block 46 is engaged in the engaging groove 48 on the driven disk 44, the driving disk 43 drives the driven disk 44 to rotate through the engaging block 46. The driven disk 44 drives the rotating block 410 to rotate, and the rotating block 410 drives the slider 413 to move along the guiding groove 412. The slider 413 drives the ultrasonic detector 3 to move. When the engaging block 46 on the driving disk 43 is separated from the engaging groove 48 on the driven disk 44, the arc groove 47 on the driven disk 44 is attached to the driving disk 43, and the driven disk 44 stops rotating. At this time, the ultrasonic detector 3 stops moving, and the start key 415 on the slider 413 on the upper end face of the ultrasonic detector 3 is located below a convex block 419 on the lower end face of the disk 42. At this time, the convex block 419 presses the top block 418 on the protective cover 416 covering the start key 415, and the top block 418 moves downward under force to press the start key 415. At this time, the ultrasonic detector 3 is started. The ultrasonic detector 3 emits and receives high-frequency sound waves, and then detects the surface and internal structure of the building component by receiving the ultrasonic signal reflected from the target object. When the engaging block 46 on the driving disk 43 is engaged in the engaging groove 48 on the driven disk 44 again, the steps are the same as above, and this is repeated to enable the ultrasonic detector 3 to intermittently detect multiple points on the surface of the building component.

[0024] Through the setting of the external detection point adjustment assembly 4, the detection points of the ultrasonic detector 3 can be adjusted intermittently, and the ultrasonic detector 3 that stays briefly at the detection point can be started automatically. This can not only enable the ultrasonic detector 3 to perform multi-point detection on the building component, but also avoid the problem that the part of the building component far from the ultrasonic detector 3 receives weaker sound waves emitted by the ultrasonic detector 3 due to the large detection range of the ultrasonic detector 3 for the building component, thus affecting the detection accuracy of the building component.

[0025] Please refer to Figures 8 - 11, in this embodiment, a backing plate 5 is provided on the upper end surface of the workbench 1, and a centering and limiting assembly 6 is provided on the upper end surface of the backing plate 5. The centering and limiting assembly 6 includes a transmission gear 61 rotatably connected in the backing plate 5 and a second drive motor 69 provided inside the workbench 1. The output end of the second drive motor 69 is docked with the transmission gear 61. Tooth plates 62 are provided on both sides of the transmission gear 61. One end of each of the two tooth plates 62 passes through the backing plate 5. A centering clamp plate 64 is provided on the tooth plate 62 passing through the backing plate 5. Guide plates 63 are provided on one side of each tooth plate 62. One end of the guide plate 63 is inserted into the backing plate 5. Mounting plates 65 are provided on the front and rear side walls of the centering clamp plate 64. A pressing plate 66 is rotatably provided between the two mounting plates 65. Grooves 67 are formed at two corners of the centering clamp plate 64 away from the tooth plate 62. A spiral spring 68 is provided in the groove 67. One end of the spiral spring 68 is connected to the lower end surface of the pressing plate 66. One end of the pressing plate 66 extends to one side of the upper end surface of the centering clamp plate 64. An inclined angle is formed at the lower corner of one end of the pressing plate 66.

[0026] During use, first place the building component on the upper end surface of the backing plate 5, and then start the second drive motor 69. The second drive motor 69 drives the transmission gear 61 to rotate. The transmission gear 61 drives the two tooth plates 62 to move in opposite directions. The tooth plates 62 drive the centering clamp plate 64 to move. The centering clamp plate 64 centrally clamps the building component placed on the upper end surface of the backing plate 5. When the building component is at the middle of the upper end surface of the backing plate 5, the centering clamp plate 64 continues to apply force to clamp the building component. At this time, the pressing plate 66 is forced to turn upward, and the pressing plate 66 slides to the upper end surface of the building component through the inclined angle. The turned pressing plate 66 presses the building component on the upper end surface of the backing plate 5 under the pulling of the spiral spring 68, so as to limit the position of the building component.

[0027] The backing plate 5 is provided for placing the building component to be detected. Through the setting of the centering and limiting assembly 6, the building component placed on the upper end surface of the backing plate 5 can be centered, which can avoid the building component being placed offset from the detection range of the ultrasonic detector 3, thus affecting the accuracy of the building component detection.

[0028] The working process and principle of the present invention: First, place the building component on the upper end surface of the backing plate 5. Then, start the second driving motor 69. The second driving motor 69 drives the transmission gear 61 to rotate. The transmission gear 61 drives the two toothed plates 62 to move in opposite directions. The toothed plates 62 drive the centering clamp plate 64 to move. The centering clamp plate 64 centrally clamps the building component placed on the upper end surface of the backing plate 5. When the building component is at the middle of the upper end surface of the backing plate 5, the centering clamp plate 64 continues to apply force to clamp the building component. At this time, the pressing plate 66 is forced to turn upward, and the pressing plate 66 slides to the upper end surface of the building component through the inclined angle. The turned pressing plate 66 presses the building component on the upper end surface of the backing plate 5 under the pulling of the spiral spring 68, so as to limit the position of the building component. Then, move the detection point adjustment assembly 4 and the ultrasonic detector 3 to the appropriate position through the cylinder 7. Then, start the first driving motor 49. The first driving motor 49 drives the driving disk 43 to rotate. The driving disk 43 drives the engaging block 46 to rotate. When the engaging block 46 is engaged in the engaging groove 48 on the driven disk 44, the driving disk 43 drives the driven disk 44 to rotate through the engaging block 46. The driven disk 44 drives the rotating block 410 to rotate. The rotating block 410 drives the sliding block 413 to move along the guiding groove 412. The sliding block 413 drives the ultrasonic detector 3 to move. When the engaging block 46 on the driving disk 43 is separated from the engaging groove 48 on the driven disk 44, the arc groove 47 on the driven disk 44 is attached to the driving disk 43, and the driven disk 44 stops rotating. At this time, the ultrasonic detector 3 stops moving, and the start key 415 on the sliding block 413 on the upper end surface of the ultrasonic detector 3 is located below a convex block 419 on the lower end surface of the disk 42. At this time, the convex block 419 presses the top block 418 on the protective cover 416 covering the start key 415. The top block 418 is forced to move downward, so as to press the start key 415. At this time, the ultrasonic detector 3 is started. The ultrasonic detector 3 emits and receives high-frequency sound waves, and then detects the surface and internal structure of the building component by receiving the ultrasonic signal reflected from the target object. When the engaging block 46 on the driving disk 43 is engaged in the engaging groove 48 on the driven disk 44 again, the steps are the same as above. Repeating this way, the ultrasonic detector 3 can intermittently detect multiple points on the surface of the building component.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultrasonic-based detection device for the strength of building components, comprising a workbench (1) and a support frame (2) arranged on the upper end surface of the workbench (1), characterized in that: Above the workbench (1), there is an ultrasonic detector (3) for detecting surface defects and internal structures of building components through ultrasonic waves. Above the ultrasonic detector (3), there is a detection point adjustment component (4). The detection point adjustment component (4) is connected to the support frame (2) through a cylinder (7). The detection point adjustment component (4) is used to intermittently adjust the detection points of the ultrasonic detector (3), and the ultrasonic detector (3) that briefly stops at the detection point can start by itself.

2. The device for detecting the strength of building components based on ultrasonic waves according to claim 1, characterized in that: The detection point adjustment component (4) includes a connection box (41) connected to the cylinder (7) and a disc (42) provided on the lower end face of the connection box (41). The disc (42) is a hollow disc. Inside the connection box (41), a driving disc (43) and a driven disc (44) are rotatably arranged. On one side of the upper end face of the connection box (41), there is a first driving motor (49), and the output end of the first driving motor (49) is butted against the driving disc (43).

3. The detection device for the strength of building components based on ultrasonic waves according to claim 2, characterized in that: On the upper end face of the driving disc (43), there is a sunken groove (45). At the bottom end inside the sunken groove (45), there is a clamping block (46). The lower end face of the driven disc (44) is at the same horizontal plane as the sunken groove (45). On the driven disc (44), there are a plurality of arc grooves (47), and the arc grooves (47) cooperate with the driving disc (43).

4. The detecting device for the strength of building components based on ultrasonic waves according to claim 3, characterized in that: On the driven disc (44), there is a clamping groove (48). The clamping groove (48) is arranged between two adjacent arc grooves (47). The clamping block (46) on the driving disc (43) can be rotatably clamped in the clamping groove (48) on the driven disc (44).

5. The detecting device for the strength of building components based on ultrasonic waves according to claim 2, wherein: At the bottom end inside the disc (42), a rotating block (410) is rotatably arranged. The driving disc (43) is butted against the rotating block (410). A moving cross plate (411) is inserted on the rotating block (410). On one side of the lower end face of the moving cross plate (411), there is a slider (413). On the bottom end inside the disc (42), there is a guiding groove (412). The guiding groove (412) is in the shape of a spiral curve, and the slider (413) is slidably connected in the guiding groove (412).

6. The detection device for the strength of building components based on ultrasonic waves according to claim 5, characterized in that: The ultrasonic detector (3) is connected to the slider (413) through a connecting block (414). On one side of the upper end face of the connecting block (414), there is a start key (415). The start key (415) is electrically connected to the ultrasonic detector (3). On the upper end face of the connecting block (414), there is a protective cover (416), and the protective cover (416) covers the start key (415).

7. The device for detecting the strength of building components based on ultrasonic waves according to claim 6, characterized in that: A reset spring (417) is provided on the upper end surface of the connection block (414). The reset spring (417) is located outside the ultrasonic detector (3). A top block (418) is inserted into the protective cover (416). Multiple bumps (419) are provided on the lower end surface of the disc (42). The multiple bumps (419) are sequentially arranged at the intermittent detection positions of the ultrasonic detector (3). Chamfers are provided at both corners of the lower end surface of the bump (419) and both corners of the upper end surface of the top block (418).

8. The device for detecting the strength of building components based on ultrasonic waves according to claim 1, characterized in that: A backing plate (5) is provided on the upper end surface of the workbench (1). A centering and limiting assembly (6) is provided on the upper end surface of the backing plate (5). The centering and limiting assembly (6) includes a transmission gear (61) rotatably connected to the backing plate (5) and a second drive motor (69) provided inside the workbench (1). The output end of the second drive motor (69) is connected to the transmission gear (61).

9. The detection device for the strength of building components based on ultrasonic waves according to claim 8, characterized in that: Toothed plates (62) are provided on both sides of the transmission gear (61). One end of each of the two toothed plates (62) passes through the backing plate (5). A centering clamping plate (64) is provided on the toothed plate (62) passing through the backing plate (5). Guide plates (63) are provided on one side of each toothed plate (62). One end of the guide plate (63) is inserted into the backing plate (5).

10. The detection device for the strength of building components based on ultrasonic waves according to claim 9, characterized in that: Mounting plates (65) are provided on the front and rear side walls of the centering clamping plate (64). A pressing plate (66) is rotatably arranged between the two mounting plates (65). Grooves (67) are provided at both corners of the centering clamping plate (64) away from the toothed plate (62). A spiral spring (68) is provided in the groove (67). One end of the spiral spring (68) is connected to the lower end surface of the pressing plate (66). One end of the pressing plate (66) extends to one side of the upper end surface of the centering clamping plate (64). An inclined angle is provided at the lower corner of one end of the pressing plate (66).

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