Layering defect detection device based on air coupling

Abstract

The utility model relates to the technical field of ultrasonic detection equipment, in particular to a layering defect detection device based on air coupling, which comprises a scanning piece, a scanning frame, an ultrasonic probe and a placing piece, the scanning frame is arranged at one end of the scanning piece, and the ultrasonic probe is fixedly mounted at the bottom of the scanning frame. The scanning frame comprises a scanning piece, a feeding piece is arranged at the position, located below the ultrasonic probe, of one side of the scanning piece, a pre-amplifier is arranged at the other side of the scanning piece and connected with a signal generator through a wire, and a displayer is vertically arranged on the signal generator; an electric telescopic rod is vertically fixed to the output end of the rotating motor. The utility model overcomes the defects that the existing ultrasonic transmitter is vertically arranged, can only scan transversely and cannot scan circumferentially and vertically, so that the ultrasonic transmitter can only scan sheet-shaped CFRP materials transversely and cannot scan cylindrical CFRP materials, and the range of ultrasonic detection of the CFRP materials is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic detection equipment, in particular to a delamination defect detection device based on air coupling. Background Art

[0002] CFRP material, or carbon fiber reinforced polymer or plastic, is a high-performance composite material known for its light weight, high strength and rigidity. After processing, CFRP material needs to be delaminated to detect whether there is any delamination inside the CFRP material. Existing CFRP material testing mostly uses air-coupled acoustic wave testing.

[0003] The existing announcement number is CN221506800U, and its name is a composite material delamination defect detection device based on ultrasonic guided waves, which includes a three-dimensional scanning frame and a signal analysis device. The upper lateral sides of the three-dimensional scanning frame are respectively provided with an ultrasonic sensor longitudinal movement mechanism and a vibrometer longitudinal movement mechanism. A plurality of bracket mechanisms for placing composite materials are symmetrically arranged between the ultrasonic sensor longitudinal movement mechanism and the vibrometer longitudinal movement mechanism. The ultrasonic sensor longitudinal movement mechanism is connected to a telescopic rod with an adjustable angle. The front end of the telescopic rod extends toward the direction of the vibrometer longitudinal movement mechanism and is provided with a rotatable ultrasonic sensor universal joint. The front end of the ultrasonic sensor universal joint is provided with a rotatable ultrasonic sensor universal joint. The end is connected to an air-coupled ultrasonic sensor, and an inclination sensor is installed on the outside of the air-coupled ultrasonic sensor. The longitudinal moving mechanism of the vibrometer is connected to the vertical moving mechanism of the vibrometer, and the vertical moving mechanism of the vibrometer is connected to the laser Doppler vibrometer. The air-coupled ultrasonic sensor signal is connected to the ultrasonic transmitter. The air-coupled ultrasonic sensor, the inclination sensor, the laser Doppler vibrometer, and the ultrasonic transmitter are respectively connected to the signal analysis device. The composite material delamination defect detection device based on ultrasonic guided waves can realize composite material delamination defect detection on a large area, quickly, accurately and visually. Compared with the existing technology, it has significant innovation and application value.

[0004] However, the ultrasonic transmitter is vertically arranged and can only scan horizontally but not circumferentially. This results in the ultrasonic transmitter being able to scan only sheet CFRP materials horizontally but not cylindrical CFRP materials, thus affecting the range of ultrasonic detection of CFRP materials. Utility Model Content

[0005] The utility model solves the problems in the related art and proposes a delamination defect detection device based on air coupling.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions: a layered defect detection device based on air coupling, comprising a scanning piece, a scanning frame, an ultrasonic probe and a discharge piece, a scanning frame is provided at one end of the scanning piece, and an ultrasonic probe is fixedly installed at the bottom of the scanning frame, a discharge piece is provided on one side of the scanning piece below the ultrasonic probe, and a preamplifier is provided on the other side of the scanning piece, the preamplifier is connected to a signal generator through a wire, and a display is vertically provided on the signal generator, the scanning frame includes a support, a rotating motor is vertically fixed on the support, and an electric telescopic rod is vertically fixed to the output end of the rotating motor, a flip piece is vertically provided at the bottom end of the electric telescopic rod, and the ultrasonic probe is fixed on the flip piece.

[0007] As a preferred solution, the scanning part includes a scanning seat, a sliding frame is horizontally fixed on the top surface of the scanning seat close to the side of the preamplifier, and a moving screw is horizontally connected in the sliding frame for rotation. A moving motor is horizontally fixed at one end of the sliding frame, and the output end of the moving motor is fixed at the end of the moving screw.

[0008] As a preferred solution, a sliding seat is assembled on the sliding frame for horizontal sliding, and a screw hole is horizontally opened in the middle of the sliding seat to cooperate with the thread of the moving screw.

[0009] As a preferred solution, a hydraulic rod is horizontally fixed on the top of the slide, and the output end of the hydraulic rod is fixed on the support.

[0010] As a preferred solution, the flip part includes a swivel seat, which is vertically fixed to the bottom end of the electric telescopic rod, and a plurality of limiting holes are evenly and horizontally opened on one end face of the swivel seat. A rotating cylinder is horizontally connected to the rotating hole of the swivel seat, and an ultrasonic probe is vertically fixed to one end of the rotating cylinder.

[0011] As a preferred solution, the other end of the rotating drum slides horizontally through the limit frame, and a first spring is horizontally sleeved on the outside of the limit frame, with both ends of the first spring respectively fixed to the inner wall of the rotating drum and the end of the limit frame.

[0012] As a preferred solution, a limiting column is horizontally fixed to the outer end of the limiting frame, and the limiting column is plugged into the limiting hole on the swivel seat.

[0013] As a preferred solution, the discharge part includes a placement frame, a sliding box frame is vertically fixed on the top surface of the placement frame, and a lifting screw is vertically rotatably connected in the sliding box frame, a discharge frame is horizontally arranged on the sliding box frame, and a screw hole block is horizontally fixed in the middle of one end surface of the discharge frame, the screw hole block is vertically slidably assembled in the sliding box frame, and the screw hole block is threadedly connected to the lifting screw.

[0014] As a preferred solution, a moving bar is assembled in the horizontal sliding manner inside the discharge frame, and multiple second springs are horizontally fixed on one end face of the moving bar, and the other ends of the multiple second springs are fixed on the inner end face of the discharge frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is used to detect layered defects in CFRP materials, the CFRP material to be detected is placed on the material discharge piece, and then the ultrasonic probe is assembled on the scanning frame. When detecting the CFRP material, the ultrasonic probe is flipped and rotated on the turntable according to the external structure of the CFRP material, and the direction of occurrence is changed to scan CFRP materials with different external structures. When scanning, the electric telescopic rod is started to extend and push the ultrasonic probe into the inside of the CFRP material to be scanned, and then the rotating motor is started to drive the ultrasonic probe to rotate around the CFRP material for scanning. At the same time, the signal scanned by the ultrasonic probe is amplified by the preamplifier and transmitted to the signal generator, and then the signal generator transmits the signal information to the display for display, so that the scanning position and angle of the ultrasonic probe can be switched according to the external structure, and the cylindrical CFRP material can be scanned and processed, thereby expanding the scope of ultrasonic detection of CFRP materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the scanning unit in the disassembled state according to the embodiment of the present invention;

[0018] Figure 3 This is a schematic structural diagram of the scanning frame in the disassembled state according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic structural diagram of the flip member in the disassembled state in an embodiment of the present utility model;

[0020] Figure 5 It is a structural schematic diagram of the material discharging part in the embodiment of the present utility model in the decomposed state.

[0021] In the figure: 1. Scanning part; 11. Scanning seat; 12. Slide frame; 13. Moving screw; 14. Moving motor; 15. Slide; 16. Hydraulic rod; 2. Scanning frame; 21. Support; 22. Rotating motor; 23. Electric telescopic rod; 24. Flipping part; 241. Rotating seat; 242. Limiting hole; 243. Rotating drum; 244. Limiting frame; 245. First spring; 246. Limiting column; 3. Ultrasonic probe; 4. Discharging part; 41. Placing frame; 42. Slide box frame; 43. Screw hole block; 44. Discharging frame; 45. Moving bar; 46. Second spring; 47. Lifting screw; 5. Preamplifier; 6. Signal generator; 7. Display. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0025] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0028] like Figures 1 to 5As shown, a delamination defect detection device based on air coupling includes a scanning piece 1, a scanning frame 2, an ultrasonic probe 3 and a material discharge piece 4. The scanning frame 2 is provided at one end of the scanning piece 1, and the ultrasonic probe 3 is fixedly installed at the bottom of the scanning frame 2. A material discharge piece 4 is provided on one side of the scanning piece 1 below the ultrasonic probe 3, and a preamplifier 5 is provided on the other side of the scanning piece 1. The preamplifier 5 is connected to a signal generator 6 through a wire, and a display 7 is vertically provided on the signal generator 6. The scanning frame 2 includes a support 21, a rotating motor 22 is vertically fixed on the support 21, and an electric telescopic rod 23 is vertically fixed at the output end of the rotating motor 22. A flip piece 24 is vertically provided at the bottom end of the electric telescopic rod 23, and the ultrasonic probe 3 is fixed on the flip piece 24. When performing delamination defect detection on CFRP material during use, the CFRP material to be detected is placed on the support 21. The material is placed on the material discharging part 4, and then the ultrasonic probe 3 is assembled on the scanning frame 2. When detecting the CFRP material, the ultrasonic probe 3 is flipped and rotated on the rotating seat 241 according to the external structure of the CFRP material, and the direction of occurrence is changed to scan the CFRP materials with different external structures. When scanning, the electric telescopic rod 23 is started to extend and push the ultrasonic probe 3 to insert into the CFRP material to be scanned, and then the rotating motor 22 is started to drive the ultrasonic probe 3 to rotate around the CFRP material for scanning. At the same time, the signal scanned by the ultrasonic probe 3 is amplified by the preamplifier 5 and transmitted to the signal generator 6, and then the signal generator 6 transmits the signal information to the display 7 for display. In this way, the scanning position and angle of the ultrasonic probe 3 can be switched according to the external structure, and the cylindrical CFRP material can be scanned and processed, thereby expanding the scope of ultrasonic detection of CFRP materials.

[0029] In one embodiment, Figure 2 As shown, the scanning part 1 includes a scanning seat 11, and a sliding frame 12 is horizontally fixed on the top surface of the scanning seat 11 near the side of the preamplifier 5, and a moving screw 13 is horizontally connected to the sliding frame 12 for horizontal rotation. A moving motor 14 is horizontally fixed to one end of the sliding frame 12, and the output end of the moving motor 14 is fixed to the end of the moving screw 13. A slide 15 is assembled on the sliding frame 12 for horizontal sliding, and a screw hole is horizontally penetrated in the middle of the slide 15 to cooperate with the thread of the moving screw 13. When the horizontal position of the CFRP material is switched horizontally along the X-axis direction for scanning, the moving motor 14 is started to drive the moving screw 13 to rotate, and the thread drives the slide 15 to slide horizontally in the slide frame 12, driving the slide 15 to move horizontally at the top of the horizontally set slide frame 12, so that when scanning the CFRP material later, the horizontal position of the CFRP material is switched horizontally along the X-axis direction for scanning, which is conducive to comprehensive and uniform scanning of the CFRP material.

[0030] In one embodiment, Figure 2 and 3As shown, a hydraulic rod 16 is horizontally fixed on the top of the slide 15, and the output end of the hydraulic rod 16 is fixed on the support 21. When in use, in order to switch the horizontal position of the CFRP material horizontally along the Y-axis direction for scanning, the hydraulic rod 16 is started to extend horizontally, driving the flip member 24 to move horizontally, so as to facilitate the horizontal position of the CFRP material to be switched horizontally along the Y-axis direction for scanning, which is beneficial to the comprehensive and uniform scanning of the CFRP material.

[0031] Scanning at different positions is achieved by driving the scanning structure to move on the X and Y axes, and the combined control drive software can achieve array movement or circular movement.

[0032] In one embodiment, Figure 3 and 4 As shown, the flip member 24 includes a rotating seat 241, which is vertically fixed to the bottom end of the electric telescopic rod 23, and a plurality of limiting holes 242 are uniformly and horizontally penetrated on one side end surface of the rotating seat 241. A rotating cylinder 243 is horizontally connected to the rotating hole of the rotating seat 241, and an ultrasonic probe 3 is vertically penetrated and fixed at one end of the rotating cylinder 243. The rotating cylinder 243 can rotate horizontally on the rotating seat 241, which is convenient for horizontally deflecting the ultrasonic probe 3 at the end of the rotating cylinder 243 to emit the direction of the sound wave. When scanning the CFRP material, the scanning position and angle of the ultrasonic probe 3 can be switched according to the external structure, and the cylindrical CFRP material can be scanned and processed, thereby expanding the scope of ultrasonic detection of CFRP materials.

[0033] In one embodiment, Figure 3 and 4 As shown, the other end of the rotating cylinder 243 slides horizontally through the connected limiting frame 244, and the outer side of the limiting frame 244 is horizontally sleeved with a first spring 245, and the two ends of the first spring 245 are respectively fixed to the inner wall of the rotating cylinder 243 and the end of the limiting frame 244, and the outer end of the limiting frame 244 is horizontally fixed with a limiting column 246, and the limiting column 246 is plugged into the limiting hole 242 on the rotating seat 241. In use, in order to limit the direction of the sound wave generated by the ultrasonic probe 3 during scanning, when the rotating cylinder 243 deflects in the rotating seat 241, the limiting frame 244 is pulled to slide horizontally in the rotating cylinder 243, squeezing the first spring 245. The spring 245 is deformed, and the pulled limit frame 244 drives the limit column 246 to pull out the limit hole 242 at the end of the rotating seat 241. The rotating drum 243 rotates in the rotating seat 241. After switching the direction of the sound wave generated by the ultrasonic probe 3, the limit frame 244 is released. Under the action of the deformation force of the first spring 245, the limit frame 244 is pushed to slide horizontally in the rotating drum 243, driving the limit column 246 on the limit frame 244 to insert into the limit hole 242 on the rotating seat 241. The position of the limiting rotating drum 243 in the limit frame 244 effectively keeps the direction of the ultrasonic probe 3 stable after the conversion occurs.

[0034] In one embodiment, Figure 1 and5 As shown, the discharge part 4 includes a placement frame 41, a sliding box frame 42 is vertically fixed on the top surface of the placement frame 41, and a lifting screw 47 is vertically rotatably connected in the sliding box frame 42, a discharge frame 44 is horizontally arranged on the sliding box frame 42, and a screw hole block 43 is horizontally fixed in the middle of one side end surface of the discharge frame 44, the screw hole block 43 is vertically slidably assembled in the sliding box frame 42, and the screw hole block 43 is threadedly connected with the lifting screw 47. During use, according to the shape of the supported CFRP material, the lifting screw 47 on the sliding box frame 42 is rotated, and the lifting screw 47 is threadedly matched with the screw hole block 43, and the screw hole block 43 on one side of the discharge frame 44 is driven by the thread to vertically lift and lower on the sliding box frame 42, lifting the discharge frame 44 to vertically move and switch the distance between the CFRP material and the ultrasonic probe 3, so that the height of the lifted CFRP material can be adjusted vertically.

[0035] In one embodiment, Figure 1 and 5 As shown, the internal horizontal sliding assembly of the discharge frame 44 is equipped with a moving bar 45, and a plurality of second springs 46 are horizontally fixed on one end face of the moving bar 45, and the other ends of the plurality of second springs 46 are fixed on the inner end face of the discharge frame 44. In use, in order to be suitable for CFRP materials with different external structures, a moving bar 45 is provided for horizontal sliding in the discharge frame 44. The moving bar 45 is deformed by the elastic force of the plurality of second springs 46, pushing the moving bar 45 to slide horizontally in the discharge frame 44 to clamp the CFRP materials with different external structures to maintain stability, thereby expanding the stable clamping range for CFRP materials with different outer diameter structures.

[0036] In this embodiment, when performing delamination defect detection on CFRP materials during use, the CFRP material to be inspected is placed on the material discharge piece 4, and then the ultrasonic probe 3 is assembled on the scanning frame 2. When inspecting the CFRP material, the ultrasonic probe 3 is flipped and rotated on the rotating seat 241 according to the external structure of the CFRP material, and the direction of occurrence is changed to scan CFRP materials with different external structures. During scanning, the electric telescopic rod 23 is started to extend and push the ultrasonic probe 3 to insert into the CFRP material to be scanned, and then the rotating motor 22 is started to drive the ultrasonic probe 3 to rotate around the CFRP material for scanning. At the same time, the signal scanned by the ultrasonic probe 3 is amplified by the preamplifier 5 and transmitted to the signal generator 6, and then the signal generator 6 transmits the signal information to the display 7 for display.

[0037] The above is a preferred embodiment of the present invention. Technicians in the field of the present invention can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment. Any obvious improvements, replacements or modifications made by technicians in this field on the basis of the present invention are within the scope of protection of the present invention.

Claims

1. A delamination defect detection device based on air coupling, characterized in that: The invention comprises a scanning part (1), a scanning frame (2), an ultrasonic probe (3) and a discharge part (4), wherein the scanning part (1) is provided with a scanning frame (2) at one end, and the ultrasonic probe (3) is fixedly installed at the bottom of the scanning frame (2), a discharge part (4) is provided on one side of the scanning part (1) and is located below the ultrasonic probe (3), and a preamplifier (5) is provided on the other side of the scanning part (1), the preamplifier (5) is connected to a signal generator (6) through a wire, and a display (7) is vertically provided on the signal generator (6), the scanning frame (2) comprises a support (21), a rotating motor (22) is vertically fixed on the support (21), and an electric telescopic rod (23) is vertically fixed to the output end of the rotating motor (22), a flip part (24) is vertically provided at the bottom end of the electric telescopic rod (23), and the ultrasonic probe (3) is fixed on the flip part (24).

2. The delamination defect detection device based on air coupling according to claim 1, characterized in that: The scanning member (1) includes a scanning seat (11), a sliding frame (12) is horizontally fixed on the top surface of the scanning seat (11) near the side of the preamplifier (5), and a moving screw (13) is horizontally rotatably connected in the sliding frame (12), a moving motor (14) is horizontally fixed at one end of the sliding frame (12), and the output end of the moving motor (14) is fixed to the end of the moving screw (13).

3. The delamination defect detection device based on air coupling according to claim 2, characterized in that: A sliding seat (15) is assembled on the sliding frame (12) for horizontal sliding, and a screw hole is horizontally penetrated through the middle of the sliding seat (15) to cooperate with the thread of the moving screw rod (13).

4. The delamination defect detection device based on air coupling according to claim 3, characterized in that: A hydraulic rod (16) is horizontally fixed on the top of the slide (15), and the output end of the hydraulic rod (16) is fixed on the support (21).

5. The delamination defect detection device based on air coupling according to claim 4, characterized in that: The flip member (24) includes a rotating seat (241), which is vertically fixed to the bottom end of the electric telescopic rod (23), and a plurality of limiting holes (242) are evenly and horizontally opened on one end surface of the rotating seat (241), a rotating cylinder (243) is horizontally connected to the rotating hole of the rotating seat (241), and an ultrasonic probe (3) is vertically penetrated and fixed at one end of the rotating cylinder (243).

6. The delamination defect detection device based on air coupling according to claim 5, characterized in that: The other end of the rotating drum (243) slides horizontally through the limit frame (244), and the outside of the limit frame (244) is horizontally sleeved with a first spring (245), and the two ends of the first spring (245) are respectively fixed to the inner wall of the rotating drum (243) and the end of the limit frame (244).

7. The delamination defect detection device based on air coupling according to claim 6, characterized in that: A limiting column (246) is horizontally fixed to the outer end of the limiting frame (244), and the limiting column (246) is plugged into the limiting hole (242) on the rotating seat (241).

8. The delamination defect detection device based on air coupling according to claim 7, characterized in that: The material discharging member (4) comprises a placing frame (41), a sliding box frame (42) is vertically fixed on the top surface of the placing frame (41), and a lifting screw (47) is vertically rotatably connected in the sliding box frame (42), a material discharging frame (44) is horizontally arranged on the sliding box frame (42), and a screw hole block (43) is horizontally fixed in the middle of one end surface of the material discharging frame (44), the screw hole block (43) is vertically slidably assembled in the sliding box frame (42), and the screw hole block (43) is threadedly connected to the lifting screw (47).

9. The delamination defect detection device based on air coupling according to claim 8, characterized in that: The interior of the material discharging frame (44) is horizontally slidably assembled with a moving bar (45), and a plurality of second springs (46) are horizontally fixed on one end face of the moving bar (45), and the other ends of the plurality of second springs (46) are fixed on the inner end face of the material discharging frame (44).

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