A hollow shaft phased array detection probe and detection device

Abstract

This application relates to a phased array detection probe and detection device for hollow shafts, belonging to the field of hollow shaft detection technology. The phased array detection probe of this application includes a mounting shaft for extending into the hollow shaft. The mounting shaft has multiple mounting slots, and each mounting slot houses multiple sets of phased array detection components. Each set of phased array detection components includes an arc-shaped circuit board and several detector array crystals. At least two mounting slots are arranged with their orientations staggered at 70° to 110°. The inner mounting surface of some of the arc-shaped circuit boards is a cylindrical concave arc surface, while others are a conical concave arc surface. This application also provides a detection device incorporating the above-mentioned phased array detection probe. The phased array detection probe and detection device of this application can achieve comprehensive detection of internal defects in hollow shafts, improving detection accuracy and efficiency.

Description

Technical Field

[0001] This application relates to the field of hollow shaft testing equipment technology, and in particular to a phased array testing probe and testing device for hollow shafts. Background Technology

[0002] Hollow shafts are widely used because they effectively reduce weight, improve transmission efficiency, and lower material costs while ensuring structural strength. High-speed trains commonly employ hollow shaft structures, which both reduce train weight and increase speed. The structural strength of the hollow shaft is crucial to transmission stability and reliability, and for trains, this directly impacts the safety of passengers and their property. Therefore, flaw detection of hollow shafts is essential. The common method for flaw detection involves inserting a probe equipped with an ultrasonic probe into the shaft hole, using axial pushing and rotation to achieve full-process flaw detection.

[0003] Defects within hollow shafts are typically detected quickly using automated devices, and then their exact size and location are verified and analyzed manually. Hollow shafts usually have flat-bottomed holes for fastener insertion. Detecting defects within a hollow shaft requires inspecting both transverse defects on the inner wall and the inner wall of the flat-bottomed holes. Detecting defects within hollow shafts often necessitates the use of probes at different angles for verification. Traditionally, this involves designing multiple detection carriers with different probe angles, requiring the replacement of the entire carrier when multi-angle inspections are needed. This results in low overall detection efficiency and insufficient accuracy. Summary of the Invention

[0004] To improve the efficiency and accuracy of flaw detection of hollow shafts, this application provides a phased array detection probe and detection device for hollow shafts.

[0005] Firstly, the hollow shaft phased array detection probe provided in this application adopts the following technical solution:

[0006] A phased array detection probe with a hollow shaft includes a mounting shaft for extending into the hollow shaft, the mounting shaft having at least two mounting slots; all the mounting slots are spaced apart along the length of the mounting shaft and at least two of the mounting slots are staggered in orientation by 70° to 110°.

[0007] Each of the mounting slots is provided with at least three sets of phased array detection components; all phased array detection components are distributed sequentially along the length of the mounting axis, and each set of phased array detection components includes an arc-shaped circuit board disposed in the mounting slot and a plurality of detector array crystals disposed on the arc-shaped circuit board; at least one of the arc-shaped circuit boards in each mounting slot has an inner mounting surface that is coaxial with the mounting axis and is a cylindrical concave arc surface, and at least two of the arc-shaped circuit boards have inner mounting surfaces that are coaxial with the mounting axis and are conical concave arc surfaces;

[0008] Each of the arc-shaped circuit boards has at least 31 detector element wafers arranged in an array;

[0009] The mounting shaft is also fitted with a cable that is electrically connected to the phased array detection component, and the cable extends out from one end of the mounting shaft.

[0010] The phased array detection probe in this application has at least 186 detector element wafers, which are evenly arranged on the inner mounting surface of the arc-shaped circuit board. In use, the mounting shaft, carrying the phased array detection assembly, extends into the internal space of the hollow shaft. Multiple detector element wafers are set to be excited, and the focus is achieved by controlling the delay time at the inner surface of the mounting shaft on the opposite side. Without rotating the hollow shaft or the mounting shaft, the mounting shaft and the phased array detection assembly are moved from the starting end face of the hollow shaft to the ending end face of the hollow shaft to complete one detection. Based on the calculation of 10 detector element wafers being excited each time, the phased array detection assembly can cover an area of ​​at least 190° in a single detection. Then, the mounting shaft is rotated 180° and moved back from the ending end face of the hollow shaft to the starting end face of the hollow shaft for a second detection. Two detections can achieve 360° full coverage.

[0011] In this application, the detector array crystal on the concave arc surface of the cylinder is directly incident and is mainly used to detect flat-bottomed holes on hollow shafts, while the detector array crystal on the concave arc surface of the cone is obliquely incident and is mainly used to detect circumferential grooves on hollow shafts.

[0012] By adopting the above technical solution, the phased array detection component can perform comprehensive detection from different angles, ensuring the uniform distribution and focusing effect of the detection signal, improving the detection coverage, and completing the detection of the entire hollow shaft in one round trip. This not only achieves high-precision multi-directional detection of the hollow shaft, enhancing the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection.

[0013] Optionally, there are two mounting slots, each mounting slot is provided with three sets of phased array detection components, and each arc-shaped circuit board has 32 detector array crystals arranged in an array; in each mounting slot, the inner mounting surface of one arc-shaped circuit board is a cylindrical concave arc surface, and the inner mounting surfaces of the other two arc-shaped circuit boards are conical concave arc surfaces, and the two arc-shaped circuit boards with conical concave arc surfaces are distributed on both sides of the other arc-shaped circuit board with cylindrical concave arc surfaces.

[0014] By adopting the above technical solution, the phased array detection probe in this application can achieve all-round detection of the inner wall of the hollow shaft without rotating the hollow shaft. This application further optimizes the layout of the probe to ensure the comprehensiveness and accuracy of the detection, and sets at least 6 redundant detector array element crystals to ensure high-density coverage of the detection signal and improve the detection accuracy.

[0015] Optionally, the spacing between the detector array elements on the arc-shaped circuit board with the concave cylindrical surface is 0.5–0.7 mm, and the frequency is 4 Hz.

[0016] By adopting the above technical solution, the design dimensions of the detector array element wafers on the arc-shaped circuit board with a concave cylindrical surface can improve detection accuracy and resolution, effectively detecting defects inside hollow shafts, especially showing significant results in detecting flat-bottomed holes. This design reduces signal interference between detector array element wafers, improving the reliability and accuracy of detection.

[0017] Optionally, the spacing between the detector array crystals on the arc-shaped circuit board with a concave conical surface is 0.5 to 0.7 mm, and the frequency is 4 Hz; the inner side of the arc-shaped circuit board with a concave conical surface is tilted at an angle of 45° relative to the central axis of the mounting shaft.

[0018] By adopting the above technical solution, the detector array element chip on the arc-shaped circuit board with a concave conical surface improves the resolution and sensitivity of the detection signal, thereby enhancing detection accuracy. Simultaneously, the inner surface of the arc-shaped circuit board with the concave conical surface is tilted at a 45° angle relative to the central axis of the mounting shaft. This allows for better adaptation to the internal geometry of the hollow shaft during detection, enabling more accurate and reliable detection of the circumferential grooves on the hollow shaft, and ensuring effective propagation and reception of the detection signal, further improving the accuracy and reliability of the detection.

[0019] Secondly, the hollow shaft phased array detection device provided in this application adopts the following technical solution:

[0020] A phased array detection device with a hollow shaft includes at least one of the phased array detection probes described above. The phased array detection device further includes a first driving component for driving the mounting shaft in the phased array detection probe to move linearly and a second driving component for driving the mounting shaft in the phased array detection probe to rotate circumferentially. The second driving component is disposed on the first driving component.

[0021] By adopting the above technical solution, and by setting up the first driving component, the mounting shaft can move linearly along its axial direction inside the hollow shaft, thereby ensuring that the phased array detection component covers the entire area to be detected, improving the comprehensiveness and accuracy of the detection. By setting up the second driving component, the mounting shaft can rotate circumferentially inside the hollow shaft, ensuring that all directions of the hollow shaft can be covered during the detection process, improving the detection coverage and reliability. The mounting shaft can completely detect the entire hollow shaft in one round trip, realizing multi-directional high-precision detection of the hollow shaft, enhancing the accuracy and reliability of the detection, and significantly improving the efficiency of hollow shaft detection. Moreover, the overall automation level is high, and the movement of the mounting shaft is smooth and reliable, which helps to ensure detection accuracy.

[0022] Optionally, the first driving component includes a long strip-shaped base, a slide rail along the length of the base is provided on the upper side of the base, a sliding seat is slidably disposed on the slide rail, and a first driving member is provided on the base for driving the sliding seat to reciprocate on the slide rail.

[0023] By adopting the above technical solution, the design of the slide rail and sliding seat enables the mounting shaft to move stably back and forth along a predetermined path on the base, thereby ensuring the accurate position of the phased array detection component inside the hollow shaft.

[0024] Optionally, the first driving component is a stepper motor, and the base is provided with a rotatable lead screw. The length direction of the lead screw is consistent with the length direction of the slide rail. The sliding seat is threadedly connected to the lead screw through a nut. The stepper motor is fixed at one end of the base, and the output shaft of the stepper motor is connected to the lead screw and can drive the lead screw to rotate in both directions.

[0025] By adopting the above technical solution, the first driving component is driven by a stepper motor, which enables the sliding seat to move precisely on the slide rail, improving the positioning accuracy of the detection device and making it easy to control.

[0026] Optionally, a vertical mounting frame is fixed on the sliding seat. The mounting frame has a through hole in the middle and strip holes on both sides. The length direction of the strip holes is set along the height direction of the mounting frame. At least one mounting plate is provided at the through hole of the mounting frame. The two ends of the mounting plate are fixed to the mounting frame by connecting bolts inserted into the strip holes on both sides of the mounting frame.

[0027] Each mounting plate is provided with a mounting shaft, one end of which is rotatably connected to one side of the mounting plate via a connecting sleeve, and the other end of which extends outward along the length of the lead screw; the second drive assembly is provided on the mounting plate and is capable of driving the mounting shaft to rotate.

[0028] By adopting the above technical solution, a vertical mounting frame is fixedly installed on the sliding seat, ensuring the stability and reliability of the mounting shaft. The through hole in the middle of the mounting frame and the strip holes on both sides allow the mounting plate to be adjusted in height, improving the adaptability and flexibility of the equipment. Multiple mounting plates can be installed on the mounting frame, with one mounting shaft on each mounting plate, allowing for the simultaneous inspection of multiple hollow shafts, further improving inspection efficiency.

[0029] Optionally, the second drive assembly includes a knob rotatably mounted on the mounting plate, with indicator tips at both ends, and angle scale values ​​corresponding to the indicator tips provided on the side of the mounting plate; the central pin of the knob passes through the mounting plate and is connected to the connecting sleeve.

[0030] By adopting the above technical solution, the precise rotation of the mounting shaft can be achieved using a knob. The knob has indicator tips at both ends that correspond to the angle scale values ​​on the mounting plate, which improves the intuitiveness and accuracy of the operation. This allows the operator to easily adjust and confirm the rotation angle of the probe. The knob is operated manually, which is convenient and has a low cost.

[0031] Optionally, as another option, the second drive assembly includes a servo motor fixed on the mounting plate, the output shaft of the servo motor passing through the mounting plate and connected to the connecting sleeve.

[0032] By adopting the above technical solution, the servo motor, as the second drive component, can accurately control the rotation angle of the mounting shaft, thereby improving the automation level and detection accuracy of the detection device.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. The phased array detection component in this application can perform comprehensive detection from different angles, ensuring uniform distribution and focusing effect of the detection signal, improving detection coverage, and completing the detection of the entire hollow shaft in one round trip. This not only achieves multi-directional high-precision detection of the hollow shaft, enhancing the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection.

[0035] 2. By setting up a first drive component and a second drive component in this application, the mounting shaft can move linearly and rotate circumferentially inside the hollow shaft, ensuring that all directions of the hollow shaft can be covered during the detection process, improving the detection coverage and reliability, and the overall degree of automation is high. The movement of the mounting shaft is smooth and reliable, which is conducive to ensuring detection accuracy and detection efficiency.

[0036] 3. In this application, by setting up an installation frame and setting up multiple installation plates on the installation frame, and setting up an installation shaft on each installation plate, multiple hollow shafts can be detected simultaneously, further improving the detection efficiency.

[0037] 4. The through hole in the middle of the mounting frame and the strip holes on both sides in this application allow the mounting plate to be adjusted in the height direction, thereby adjusting the height position of the mounting and phased array detection components, improving the adaptability and flexibility of the equipment. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural diagram of the phased array detection probe in Embodiment 1 of this application.

[0039] Figure 2 This is a three-dimensional structural schematic diagram of the phased array detection device in Embodiment 2 of this application.

[0040] Figure 3 This is a schematic diagram of the installation structure of the second driving component of the phased array detection device in Embodiment 2 of this application.

[0041] Figure 4 This is a schematic diagram of the installation structure of the second drive component of the phased array detection device in Embodiment 3 of this application.

[0042] In the picture:

[0043] 10. Mounting shaft; 11. Mounting slot;

[0044] 20. Phased array detection component; 21. Arc-shaped circuit board; 211. Cylindrical concave arc surface; 212. Conical concave arc surface; 22. Detector array element chip;

[0045] 30. Cables;

[0046] 40. First drive assembly; 41. Base; 42. Slide rail; 43. Sliding seat; 44. First drive component; 45. Lead screw;

[0047] 50. Mounting frame; 51. Through hole; 52. Strip hole; 53. Mounting plate; 54. Connecting bolts;

[0048] 60. Second drive assembly; 61. Knob; 611. Indicator tip; 62. Connecting sleeve; 63. Servo motor. Detailed Implementation

[0049] The following will be combined with the appendix Figure 1 -Attached Figure 4 The technical solutions in the embodiments of the present invention are clearly and completely described herein. The described embodiments are merely possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can, in conjunction with the embodiments of the present invention, obtain other embodiments without creative effort, and these embodiments are also within the protection scope of the present invention.

[0050] Example 1

[0051] Reference Figure 1 As shown, in this embodiment, the phased array detection probe of the hollow shaft includes a mounting shaft 10; the mounting shaft 10 is used to extend into the hollow shaft to be tested, and at least two mounting slots 11 are provided on the mounting shaft 10; all mounting slots 11 are arranged at intervals along the length direction of the mounting shaft 10, and the orientations of at least two mounting slots 11 are staggered by 70° to 110°; at least three sets of phased array detection components 20 are provided in each mounting slot 11; all phased array detection components 20 are distributed sequentially along the length direction of the mounting shaft 10, and each set of phased array detection components 20 includes components provided in the mounting slot 11. The device includes an arc-shaped circuit board 21 and several detector array element wafers 22 disposed on the arc-shaped circuit board 21; at least one arc-shaped circuit board 21 in each mounting slot 11 has an inner mounting surface 211 that is coaxial with the mounting shaft 10 and a concave cylindrical arc surface 212 that is coaxial with the mounting shaft 10; at least 31 detector array element wafers 22 are arranged in an array on each arc-shaped circuit board 21; a cable 30 electrically connected to the phased array detection component 20 is also passed through the mounting shaft 10 and the cable 30 extends out from one end of the mounting shaft 10.

[0052] Furthermore, as a preferred embodiment, there are two mounting slots 11 in this embodiment, and the two mounting slots 11 are arranged at 90° offset. Each mounting slot 11 is provided with three sets of phased array detection components 20, and 32 detector array element crystals 22 are distributed in an array on each arc-shaped circuit board 21. The inner mounting surface of one arc-shaped circuit board 21 in each mounting slot 11 is a cylindrical concave arc surface 211, and the inner mounting surfaces of the other two arc-shaped circuit boards 21 are conical concave arc surfaces 212. The two arc-shaped circuit boards 21 with conical concave arc surfaces 212 are distributed on both sides of the other arc-shaped circuit board 21 with cylindrical concave arc surfaces 211.

[0053] In this application, the spacing between the detector array crystals 22 on the arc-shaped circuit board 21 with a cylindrical concave arc surface 211 is 0.5–0.7 mm, preferably 0.6 mm, and the frequency is 4 Hz. The spacing between the detector array crystals 22 on the arc-shaped circuit board 21 with a conical concave arc surface 212 is also 0.5–0.7 mm, preferably 0.6 mm, and the frequency is 4 Hz. The inner surface of the arc-shaped circuit board 21 with the conical concave arc surface 212 is tilted at an angle of 45° relative to the central axis of the mounting shaft 10. These design dimensions and parameters improve detection accuracy and resolution, effectively detect defects inside the hollow shaft, reduce signal interference between the detector array crystals 22, and improve the reliability and accuracy of the detection.

[0054] The implementation principle of this embodiment is as follows: The phased array detection probe in this application has 192 detector array element chips 22, of which at least 6 are redundant. The detector array element chips 22 are evenly arranged on the inner mounting surface of the arc-shaped circuit board 21 to ensure high-density coverage of the detection signal. In use, the mounting shaft 10, carrying the phased array detection component 20, extends into the internal space of the hollow shaft. Multiple detector array element chips 22 are set to be excited. By controlling the delay time, the signal is focused on the inner surface of the mounting shaft 10 on the opposite side. Without rotating the hollow shaft or the mounting shaft 10, the mounting shaft 10 and the phased array detection component 20 are moved from the starting end face of the hollow shaft to the ending end face of the hollow shaft to complete one detection. Based on the calculation of 10 detector array element chips 22 being excited each time, the phased array detection component 20 can cover an area of ​​at least 190° in a single detection. Then, the mounting shaft 10 is rotated 180° and moved back from the ending end face of the hollow shaft to the starting end face of the hollow shaft for a second detection. Two detections can achieve 360° full coverage.

[0055] In this application, the detector element crystal 22 on the concave arc surface 211 of the cylinder is a direct incident method, mainly used to detect flat-bottomed holes on the hollow shaft, while the detector element crystal 22 on the concave arc surface 212 of the cone is an oblique incident method, mainly used to detect circumferential grooves on the hollow shaft.

[0056] The phased array detection probe in this application can achieve omnidirectional detection of the inner wall of the hollow shaft without rotating the hollow shaft. By further optimizing the layout of the phased array detection component 20, this application enables the phased array detection component 20 to perform comprehensive detection from different angles, ensuring uniform distribution and focusing effect of the detection signal, improving the detection coverage, and completing the detection of the entire hollow shaft in one round trip. This not only achieves multi-directional high-precision detection of the hollow shaft, enhancing the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection.

[0057] Example 2

[0058] Reference Figure 2 As shown, the hollow shaft phased array detection device of this application includes a first drive assembly 40, a second drive assembly 60, and at least one phased array detection probe as described in Embodiment 1 above. The first drive assembly 40 includes an elongated base 41, a slide rail 42 along the length of the base 41 is provided on the upper side of the base 41, a sliding seat 43 is slidably disposed on the slide rail 42, and a first drive member 44 for driving the sliding seat 43 to reciprocate on the slide rail 42 is provided on the base 41; the second drive assembly 60 is disposed on the sliding seat 43 of the first drive assembly 40, and the second drive assembly 60 can move linearly together with the sliding seat 43 under the drive of the first drive member 44. The phased array detection probe is disposed on the second drive assembly 60, and the mounting shaft 10 of the phased array detection probe moves linearly together with the second drive assembly 60, while the second drive assembly 60 can also drive the mounting shaft 10 to rotate circumferentially.

[0059] Furthermore, refer to Figure 2 As shown, in this embodiment, the first driving component 44 is a stepper motor. The base 41 is provided with a rotatable lead screw 45. There are two slide rails 42, which are arranged in parallel and spaced apart. The length direction of the lead screw 45 is consistent with the length direction of the slide rails 42. The lead screw 45 is located between the two slide rails 42. The sliding seat 43 is connected to the lead screw 45 by a threaded nut. The stepper motor is fixed at one end of the base 41. The output shaft of the stepper motor is connected to the lead screw 45 and can drive the lead screw 45 to rotate in both directions. This allows the sliding seat 43 to move accurately on the slide rails 42, improving the positioning accuracy of the detection device and making it easy to control.

[0060] Alternatively, the first drive component 44 can also be a hydraulic cylinder or a pneumatic cylinder.

[0061] Reference Figure 2 and Figure 3As shown, a vertical mounting frame 50 is fixed on the sliding seat 43. The mounting frame 50 has a through hole 51 in the middle and strip holes 52 on both sides of the mounting frame 50. The length direction of the strip holes 52 is set along the height direction of the mounting frame 50. At least one mounting plate 53 is provided at the through hole 51 of the mounting frame 50. In this embodiment, two mounting plates 53 are used as an example. The two ends of the mounting plate 53 are fixed to the mounting frame 50 by connecting bolts 54 inserted into the strip holes 52 on both sides of the mounting frame 50. Each mounting plate 53 is equipped with a mounting shaft 10. One end of the mounting shaft 10 is rotatably connected to one side of the mounting plate 53 through a connecting sleeve 62. The other end of the mounting shaft 10 extends outward along the length direction of the lead screw 45. The second drive assembly 60 is set on the mounting plate 53 and can drive the mounting shaft 10 to rotate.

[0062] Reference Figure 3 As shown, in this embodiment, the second drive assembly 60 includes a knob 61 rotatably mounted on the mounting plate 53. Both ends of the knob 61 have indicator tips 611. The side of the mounting plate 53 has angle scale values ​​corresponding to the indicator tips 611. The central pin of the knob 61 passes through the mounting plate 53 and connects to the connecting sleeve 62. The knob 61 allows for precise rotation of the mounting shaft 10. The indicator tips 611 at both ends of the knob 61 correspond to the angle scale values ​​on the mounting plate 53, improving the intuitiveness and accuracy of the operation. This allows the operator to easily adjust and confirm the rotation angle of the mounting shaft 10. Each test only requires manual operation once, rotating the mounting shaft 10 180°, which is convenient and cost-effective.

[0063] The implementation principle of this embodiment is as follows: By setting the first driving component 40, the mounting shaft 10 of the phased array detection probe can move linearly along its axial direction inside the hollow shaft, thereby ensuring that the phased array detection component 20 covers the entire area to be detected, improving the comprehensiveness and accuracy of the detection. By setting the second driving component 60, the mounting shaft 10 can rotate circumferentially inside the hollow shaft, ensuring that all directions of the hollow shaft can be covered during the detection process, improving the detection coverage and reliability. The mounting shaft 10 can completely detect the entire hollow shaft in one round trip, realizing multi-directional high-precision detection of the hollow shaft, enhancing the accuracy and reliability of the detection, and significantly improving the efficiency of hollow shaft detection. Moreover, the overall automation level is high, and the movement of the mounting shaft 10 is smooth and reliable, which is conducive to ensuring detection accuracy.

[0064] Example 3

[0065] Reference Figure 4As shown, this embodiment is largely the same as embodiment 2, except that the second drive component 60 in this embodiment includes a servo motor 63 fixed on the mounting plate 53, and the output shaft of the servo motor 63 passes through the mounting plate 53 and is connected to the connecting sleeve 62. As the second drive component 60, the servo motor 63 can precisely control the rotation angle of the mounting shaft 10, thereby improving the automation level and detection accuracy of the detection device.

[0066] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A phased array detection probe with a hollow shaft, comprising a mounting shaft (10) for extending into the hollow shaft; characterized in that, At least two mounting slots (11) are provided on the mounting shaft (10); all the mounting slots (11) are arranged at intervals along the length direction of the mounting shaft (10) and the orientations of at least two of the mounting slots (11) are staggered by 70° to 110°. Each of the mounting slots (11) is provided with at least three sets of phased array detection components (20); all the phased array detection components (20) are distributed sequentially along the length direction of the mounting axis (10), and each set of phased array detection components (20) includes an arc-shaped circuit board (21) disposed in the mounting slot (11) and a plurality of detector array element crystals (22) disposed on the arc-shaped circuit board (21); at least one of the arc-shaped circuit boards (21) in each mounting slot (11) has an inner mounting surface that is a cylindrical concave arc surface (211) coaxial with the mounting axis (10), and at least two of the arc-shaped circuit boards (21) have inner mounting surfaces that are conical concave arc surfaces (212) coaxial with the mounting axis (10); Each of the arc-shaped circuit boards (21) has at least 31 detector element wafers (22) arranged in an array; The mounting shaft (10) is also provided with a cable (30) electrically connected to the phased array detection component (20), and the cable (30) extends out from one end of the mounting shaft (10).

2. The hollow shaft phased array detection probe according to claim 1, characterized in that, There are two mounting slots (11), and each mounting slot (11) is provided with three sets of phased array detection components (20). Each arc-shaped circuit board (21) has 32 detector array element crystals (22) arranged in an array. The inner mounting surface of one arc-shaped circuit board (21) in each mounting slot (11) is a cylindrical concave arc surface (211), and the inner mounting surfaces of the other two arc-shaped circuit boards (21) are conical concave arc surfaces (212). The two arc-shaped circuit boards (21) with conical concave arc surfaces (212) are distributed on both sides of the other arc-shaped circuit board (21) with cylindrical concave arc surfaces (211).

3. The hollow shaft phased array detection probe according to claim 2, characterized in that, The spacing between the detector array element wafers (22) on the arc-shaped circuit board (21) with the cylindrical concave arc surface (211) is 0.5 to 0.7 mm.

4. The hollow shaft phased array detection probe according to claim 2 or 3, characterized in that, The spacing between the detector array wafers (22) on the arc-shaped circuit board (21) with a concave concave arc surface (212) is 0.5 to 0.7 mm; the inner side surface of the arc-shaped circuit board (21) with a concave concave arc surface (212) is tilted at an angle of 45° relative to the central axis of the mounting shaft (10).

5. A phased array detection device with a hollow shaft, characterized in that, The phased array detection device includes the phased array detection probe according to any one of claims 1-4, and further includes a first drive assembly (40) for driving the mounting shaft (10) in the phased array detection probe to move linearly and a second drive assembly (60) for driving the mounting shaft (10) in the phased array detection probe to rotate circumferentially; the second drive assembly (60) is disposed on the first drive assembly (40).

6. The phased array detection device for hollow shafts according to claim 5, characterized in that, The first drive assembly (40) includes a long strip-shaped base (41), a slide rail (42) is provided on the upper side of the base (41) along the length direction of the base (41), a sliding seat (43) is slidably disposed on the slide rail (42), and a first drive member (44) is provided on the base (41) for driving the sliding seat (43) to reciprocate on the slide rail (42).

7. The phased array detection device for hollow shafts according to claim 6, characterized in that, The first driving component (44) is a stepper motor. The base (41) is provided with a rotatable lead screw (45). The length direction of the lead screw (45) is consistent with the length direction of the slide rail (42). The sliding seat (43) is connected to the lead screw (45) by a threaded nut. The stepper motor is fixed at one end of the base (41). The output shaft of the stepper motor is connected to the lead screw (45) and can drive the lead screw (45) to rotate in both directions.

8. The phased array detection device for hollow shafts according to claim 7, characterized in that, A vertical mounting frame (50) is fixed on the sliding seat (43). The mounting frame (50) has a through hole (51) in the middle and strip holes (52) on both sides of the mounting frame (50). The length direction of the strip holes (52) is set along the height direction of the mounting frame (50). At least one mounting plate (53) is provided at the through hole (51) of the mounting frame (50). The two ends of the mounting plate (53) are fixed to the mounting frame (50) by connecting bolts (54) inserted into the strip holes (52) on both sides of the mounting frame (50). Each of the mounting plates (53) is provided with a mounting shaft (10), one end of which is rotatably connected to one side of the mounting plate (53) via a connecting sleeve (62), and the other end of which extends outward along the length direction of the lead screw (45); the second drive assembly (60) is provided on the mounting plate (53) and is capable of driving the mounting shaft (10) to rotate.

9. The phased array detection device for hollow shafts according to claim 8, characterized in that, The second drive assembly (60) includes a knob (61) rotatably mounted on the mounting plate (53), both ends of which have indicator tips (611). An angle scale value corresponding to the indicator tips (611) is provided on the side of the mounting plate (53). The central pin of the knob (61) passes through the mounting plate (53) and is connected to the connecting sleeve (62).

10. The phased array detection device for hollow shafts according to claim 8, characterized in that, The second drive assembly (60) includes a servo motor (63) fixed on the mounting plate (53), the output shaft of which passes through the mounting plate (53) and is connected to the connecting sleeve (62).

Images