Phased array detection probe of hollow shaft and detection device

Abstract

The invention relates to a phased array detection probe of a hollow shaft and a detection device, and relates to the technical field of hollow shaft detection. The phased array detection probe comprises a mounting shaft used for extending into a hollow shaft, a plurality of mounting notches are formed in the mounting shaft, a plurality of phased array detection assemblies are arranged in each mounting notch, and each phased array detection assembly comprises an arc-shaped circuit board and a plurality of detection array element wafers. At least two installation notches are arranged in a staggered mode in the direction of 70-110 degrees, the inner side installation faces of part of the arc-shaped circuit boards are cylindrical inwards-concave arc faces, and the other installation faces of the arc-shaped circuit boards are conical inwards-concave arc faces. The invention further provides a detection device comprising the phased array detection probe. According to the phased array detection probe and the detection device, comprehensive detection of internal defects of the hollow shaft can be realized, and the detection precision and the detection efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of hollow shaft detection equipment, and in particular to a phased array detection probe and a detection device for a hollow shaft. Background Art

[0002] Hollow shafts are widely used. While ensuring structural strength, they can effectively reduce weight, improve transmission efficiency, and reduce the material cost of shaft manufacturing. Currently, high-speed trains generally use hollow shaft structures, which can not only reduce the weight of the train, but also increase the speed of the train. The structural strength of the hollow shaft is related to the stability and reliability of the transmission, and for trains, it is related to the personal and property safety of a large number of passengers. Therefore, the flaw detection of hollow shafts cannot be ignored. When flaw detection of hollow shafts, the usual method is to place a probe rod equipped with an ultrasonic probe into the shaft hole, and achieve full-process flaw detection through axial pushing and self-rotation movement.

[0003] Defects in hollow shafts are usually first detected quickly by automatic devices, and then manual devices are often used to verify the size and precise location of the defects. Hollow shafts are usually provided with flat-bottom holes for plugging in fasteners. When detecting defects in hollow shafts, it is necessary to detect both the lateral defects on the inner wall of the hollow shaft and the inner wall of the flat-bottom hole. Detecting defects in hollow shafts often requires probes at different angles for detection and verification. The traditional method is to design multiple detection carriers with different probe angles, and replace the entire detection carrier when multi-angle detection is required. The overall detection efficiency is low and the detection accuracy is not high enough. Summary of the invention

[0004] In order to improve the efficiency and accuracy of flaw detection of hollow shafts, the present application provides a phased array detection probe and a detection device for a hollow shaft.

[0005] In the first aspect, the present application provides a hollow shaft phased array detection probe adopting the following technical solution: A phased array detection probe for a hollow shaft, comprising a mounting shaft for extending into the hollow shaft, the mounting shaft being provided with at least two mounting slots; all the mounting slots are arranged at intervals along the length direction of the mounting shaft and at least two of the mounting slots are arranged at an angle of 70° to 110°; At least three groups of phased array detection components are arranged in each of the installation slots; all the phased array detection components are sequentially distributed along the length direction of the installation axis, and each group of the phased array detection components includes an arc-shaped circuit board arranged in the installation slot and a plurality of detection array element chips arranged on the arc-shaped circuit board; at least one of the inner side mounting surfaces of the arc-shaped circuit board in each of the installation slots is a cylindrical concave arc surface coaxial with the installation axis, and at least two of the inner side mounting surfaces of the arc-shaped circuit boards are concave concave arc surfaces coaxial with the installation axis; At least 31 detection array element chips are distributed in an array on each of the arc-shaped circuit boards; A cable electrically connected to the phased array detection component is also passed through the installation shaft, and the cable passes through one end of the installation shaft.

[0006] The phased array detection probe in the present application is arranged with at least 186 detection array element chips, and the detection array element chips are evenly arranged on the inner mounting surface of the curved circuit board; when in use, the mounting shaft carries the phased array detection component into the internal space of the hollow shaft, and multiple detection array element chips are set to be excited. By controlling the delay time, the focus is on the inner surface of the mounting shaft on the opposite side. When the hollow shaft and the mounting shaft do not rotate, the mounting shaft and the phased array detection component are moved from the starting end face of the hollow shaft to the terminal end face of the hollow shaft to complete a detection. Calculated based on 10 detection array element chips being excited each time, a single detection of the phased array detection component can cover an area of ​​at least 190°; then the mounting shaft is rotated 180° and moved back from the terminal end face of the hollow shaft to the starting end face of the hollow shaft for a second detection. Two detections can provide 360° full coverage.

[0007] In the present application, the detection array element chip on the cylindrical concave arc surface is a direct incidence method, which is mainly used to detect the flat-bottom hole on the hollow shaft. The detection array element chip on the concave arc surface of the cone is an oblique incidence method, which is mainly used to detect the circumferential groove on the hollow shaft.

[0008] By adopting the above technical solution, the phased array detection component can perform comprehensive detection at different angles, ensuring the uniform distribution and focusing effect of the detection signal, improving the detection coverage, and completely detecting the entire hollow shaft in one round trip, which not only realizes multi-directional high-precision detection of the hollow shaft, enhances the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection.

[0009] Optionally, there are two mounting slots, three groups of phased array detection components are arranged in each mounting slot, and 32 detection array element chips are distributed in an array on each curved circuit board; the inner mounting surface of one curved circuit board in each mounting slot is a cylindrical concave curved surface, and the inner mounting surfaces of the other two curved circuit boards are conical concave curved surfaces, and the two curved circuit boards with conical concave curved surfaces are distributed on both sides of the other curved circuit board with a cylindrical concave curved surface.

[0010] By adopting the above-mentioned technical solution, the phased array detection probe in the present application can realize all-round detection of the inner wall of the hollow shaft without rotating the hollow shaft. The layout of the probe is further optimized in the present application to ensure the comprehensiveness and accuracy of the detection, and at least 6 redundant detection array element chips are provided to ensure high-density coverage of the detection signal and improve the detection accuracy.

[0011] Optionally, the detection array element chip spacing on the arc-shaped circuit board with a cylindrical concave arc surface is 0.5-0.7 mm, and the frequency is 4 Hz.

[0012] By adopting the above technical solution, the design size of the detection array element chip on the curved circuit board with a cylindrical concave curved surface can improve the detection accuracy and resolution, effectively detect the defects inside the hollow shaft, especially for the flat bottom hole. This design reduces the signal interference between the detection array element chips and improves the reliability and accuracy of the detection.

[0013] Optionally, the detection array element chip spacing on the arc-shaped circuit board with a conical concave surface is 0.5-0.7 mm, and the frequency is 4 Hz; the inner side surface of the arc-shaped circuit board with a conical concave surface is inclined at an angle of 45° relative to the central axis of the installation axis.

[0014] By adopting the above technical solution, the detection array element chip on the arc-shaped circuit board with a conical concave arc surface improves the resolution and sensitivity of the detection signal, thereby improving the detection accuracy. At the same time, the inner side surface of the arc-shaped circuit board with a conical concave arc surface is inclined at an angle of 45° relative to the central axis of the installation shaft, which can better adapt to the internal geometric shape of the hollow shaft during the detection process, more accurately and reliably detect the circumferential groove on the hollow shaft, and ensure the effective transmission and reception of the detection signal, further improving the accuracy and reliability of the detection.

[0015] In the second aspect, the present application provides a phased array detection device for a hollow shaft using the following technical solution: A phased array detection device for a hollow shaft comprises at least one of the above-mentioned phased array detection probes, the phased array detection device also comprising a first drive component for driving a mounting shaft in the phased array detection probe to move linearly and a second drive component for driving a mounting shaft in the phased array detection probe to rotate circumferentially; the second drive component is arranged on the first drive component.

[0016] By adopting the above technical solution, by setting the first drive component, the installation shaft can move in a straight line along its axial direction inside the hollow shaft, thereby ensuring that the phased array detection component covers the entire area to be detected, thereby improving the comprehensiveness and accuracy of the detection. By setting the second drive component, the installation shaft can rotate circumferentially inside the hollow shaft, ensuring that all directions of the hollow shaft can be covered during the detection process, thereby improving the coverage and reliability of the detection. The installation shaft can completely detect the entire hollow shaft in one go, which not only realizes multi-directional high-precision detection of the hollow shaft, enhances the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection. Moreover, the overall degree of automation is high, and the movement of the installation shaft is smooth and reliable, which is conducive to ensuring the detection accuracy.

[0017] Optionally, the first driving assembly includes an elongated base, a slide rail is arranged on the upper side of the base along the length direction of the base, a sliding seat is slidably arranged on the slide rail, and a first driving member for driving the sliding seat to reciprocate on the slide rail is arranged on the base.

[0018] By adopting the above technical solution, the design of the slide rail and the slide seat enables the mounting shaft to stably reciprocate along a predetermined path on the base, thereby ensuring the accurate position of the phased array detection component in the hollow shaft.

[0019] Optionally, the first driving member is a stepper motor, a rotatable screw rod is provided on the base, the length direction of the screw rod is consistent with the length direction of the slide rail, the sliding seat is connected to the screw rod through a nut thread, the stepper motor is fixed at one end of the base, the output shaft of the stepper motor is connected to the screw rod and can drive the screw rod to rotate forward and reverse.

[0020] By adopting the above technical solution, the first driving member is driven by a stepping motor, so that the sliding seat can move accurately on the slide rail, thereby improving the positioning accuracy of the detection device and facilitating control.

[0021] Optionally, a vertical mounting frame is fixedly provided on the sliding seat, a through hole is provided in the middle of the mounting frame, strip holes are provided on both sides of the mounting frame, the length direction of the strip holes is arranged along the height direction of the mounting frame, at least one mounting plate is provided at the through hole of the mounting frame, and both ends of the mounting plate are fixedly connected to the mounting frame by connecting bolts inserted into the strip holes on both sides of the mounting frame; A mounting shaft is provided on each mounting plate, one end of the mounting shaft is rotatably connected to one side of the mounting plate through a connecting sleeve, and the other end of the mounting shaft extends outward along the length direction of the screw rod; the second drive assembly is provided on the mounting plate and can drive the mounting shaft to rotate.

[0022] By adopting the above technical solution, a vertical mounting frame is fixedly arranged 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 enable the mounting plate to adjust its position in the height direction, improving the adaptability and flexibility of the equipment. Multiple mounting plates can be arranged on the mounting frame, and a mounting shaft is arranged on each mounting plate, so that multiple hollow shafts can be inspected at the same time, further improving the inspection efficiency.

[0023] Optionally, the second drive component includes a knob rotatably arranged on the mounting plate, both ends of the knob having an indicating tip, and the side surface of the mounting plate is provided with an angle scale value corresponding to the indicating tip; the center pin of the knob passes through the mounting plate and is connected to the connecting sleeve.

[0024] By adopting the above technical solution, the installation shaft can be accurately rotated using a knob. Indicator tips are provided at both ends of the knob and correspond to the angle scale values ​​on the installation plate, thereby improving the intuitiveness and accuracy of the operation, allowing the operator to easily adjust and confirm the rotation angle of the probe. The knob is manually operated, which is relatively convenient and low-cost.

[0025] Optionally, as another solution, the second driving assembly includes a servo motor fixedly mounted on the mounting plate, and an output shaft of the servo motor passes through the mounting plate and is connected to the connecting sleeve.

[0026] By adopting the above technical solution, the servo motor as the second drive component can accurately control the rotation angle of the installation shaft, thereby improving the automation level and detection accuracy of the detection device.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The phased array detection component in this application can perform comprehensive detection at different angles, ensuring the uniform distribution and focusing effect of the detection signal, improving the detection coverage, and completely detecting the entire hollow shaft in one round trip, which not only realizes multi-directional high-precision detection of the hollow shaft, enhances the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection.

[0028] 2. In the present application, by setting the first drive assembly and the second drive assembly, the installation shaft can move linearly and rotate circumferentially inside the hollow shaft, ensuring that all positions of the hollow shaft can be covered during the detection process, thereby improving the coverage and reliability of the detection, and the overall degree of automation is high, and the movement of the installation shaft is smooth and reliable, which is conducive to ensuring the detection accuracy and efficiency.

[0029] 3. In the present application, a mounting frame is provided and a plurality of mounting plates can be provided on the mounting frame, and a mounting shaft is provided on each mounting plate, so that a plurality of hollow shafts can be inspected at the same time, thereby further improving the inspection efficiency.

[0030] 4. The through hole in the middle of the mounting frame and the strip hole design on both sides in this application enable the mounting plate to be adjusted in height, thereby adjusting the height position of the mounting and phased array detection components, thereby improving the adaptability and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the phased array detection probe in Example 1 of the present application.

[0032] Figure 2 It is a schematic diagram of the three-dimensional structure of the phased array detection device in Example 2 of the present application.

[0033] Figure 3 It is a schematic diagram of the installation structure of the second drive assembly of the phased array detection device in Example 2 of the present application.

[0034] Figure 4 It is a schematic diagram of the installation structure of the second drive assembly of the phased array detection device in Example 3 of the present application.

[0035] In the figure: 10. Install the shaft; 11. Install the notch; 20. Phased array detection component; 21. Arc-shaped circuit board; 211. Concave arc surface of cylinder; 212. Concave arc surface of cone; 22. Detection array element chip; 30. Cable; 40. first driving assembly; 41. base; 42. slide rail; 43. sliding seat; 44. first driving member; 45. screw rod; 50. Mounting frame; 51. Through hole; 52. Strip hole; 53. Mounting plate; 54. Connecting bolt; 60. Second drive assembly; 61. Knob; 611. Indicator tip; 62. Connecting sleeve; 63. Servo motor. DETAILED DESCRIPTION

[0036] The following will be combined with the attached Figure 1 -Attached Figure 4 , the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0037] Example 1 Reference Figure 1 As shown, the phased array detection probe for the hollow shaft in this embodiment includes a mounting shaft 10; the mounting shaft 10 is used to extend into the hollow shaft to be detected, and 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 directions of at least two mounting slots 11 are staggered at 70° to 110°; at least three groups of phased array detection components 20 are arranged in each mounting slot 11; all the phased array detection components 20 are distributed in sequence along the length direction of the mounting shaft 10, and each group of phased array detection components 20 includes a plurality of phased array detection components 20 arranged in the mounting slot 11. The arc circuit board 21 inside and several detection array element chips 22 arranged on the arc circuit board 21; the inner side mounting surface of at least one arc circuit board 21 in each mounting slot 11 is a cylindrical concave arc surface 211 coaxial with the mounting axis 10, and the inner side mounting surfaces of at least two arc circuit boards 21 are concave arc surfaces 212 coaxial with the mounting axis 10; at least 31 detection array element chips 22 are distributed in an array on each arc circuit board 21; a cable 30 electrically connected to the phased array detection component 20 is also passed through the mounting axis 10 and the cable 30 passes through one end of the mounting axis 10.

[0038] Furthermore, as a preferred embodiment, the number of mounting slots 11 in this embodiment is two, and the orientations of the two mounting slots 11 are staggered by 90°, three groups of phased array detection components 20 are arranged in each mounting slot 11, and 32 detection array element chips 22 are distributed in an array on each curved circuit board 21; in each mounting slot 11, an inner mounting surface of an arc circuit board 21 is a cylindrical concave arc surface 211, and the inner mounting surfaces of the other two arc circuit boards 21 are conical concave arc surfaces 212, and the two arc circuit boards 21 with conical concave arc surfaces 212 are distributed on both sides of another arc circuit board 21 with a cylindrical concave arc surface 211.

[0039] In the present application, the spacing between the detection array element chips 22 on the curved circuit board 21 with a cylindrical concave arc surface 211 is 0.5 to 0.7 mm, preferably 0.6 mm, and the frequency is 4 Hz. The spacing between the detection array element chips 22 on the curved circuit board 21 with a conical concave arc surface 212 is 0.5 to 0.7 mm, preferably 0.6 mm, and the frequency is 4 Hz; the inner side surface of the curved circuit board 21 with a conical concave arc surface 212 is inclined at an angle of 45° relative to the central axis of the mounting shaft 10. The above-mentioned design dimensions and parameters can improve the detection accuracy and resolution, effectively detect defects inside the hollow shaft, reduce signal interference between the detection array element chips 22, and improve the reliability and accuracy of detection.

[0040] The implementation principle of this embodiment is as follows: the phased array detection probe in this application is arranged with 192 detection element chips 22, of which at least 6 are redundant detection element chips 22, and the detection element chips 22 are evenly arranged on the inner mounting surface of the arc-shaped circuit board 21, ensuring high-density coverage of the detection signal; when in use, the mounting shaft 10 carries the phased array detection component 20 and extends into the inner space of the hollow shaft, and multiple detection element chips 22 are set to be excited, and the delay time is controlled to focus on the inner surface of the mounting shaft 10 on the opposite side, and when the hollow shaft and the mounting shaft 10 do not rotate, 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, and calculated by exciting 10 detection element chips 22 each time, a single detection of the phased array detection component 20 can cover at least 190° of the area; 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, and two detections can achieve 360° full coverage.

[0041] In the present application, the detection array element chip 22 on the cylindrical concave arc surface 211 is in direct incidence mode, which is mainly used to detect the flat-bottom hole on the hollow shaft, and the detection array element chip 22 on the conical concave arc surface 212 is in oblique incidence mode, which is mainly used to detect the circumferential groove on the hollow shaft.

[0042] The phased array detection probe in the present application is able to achieve all-round detection of the inner wall of the hollow shaft without rotating the hollow shaft; in the present application, by further optimizing the layout of the phased array detection component 20, the phased array detection component 20 is able to perform comprehensive detection at different angles, ensuring the uniform distribution and focusing effect of the detection signal, and improving the detection coverage rate. The entire hollow shaft can be completely detected in one round trip, which not only realizes multi-directional and high-precision detection of the hollow shaft, enhances the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection.

[0043] Example 2 Reference Figure 2As shown, the phased array detection device for the hollow shaft in the present application includes a first drive assembly 40, a second drive assembly 60 and at least one phased array detection probe in the above-mentioned embodiment 1. The first drive assembly 40 includes a base 41 in an elongated shape, a slide rail 42 along the length direction of the base 41 is arranged on the upper side of the base 41, a slide seat 43 is slidably arranged on the slide rail 42, and a first drive member 44 for driving the slide seat 43 to reciprocate on the slide rail 42 is arranged on the base 41; the second drive assembly 60 is arranged on the slide seat 43 of the first drive assembly 40, and the second drive assembly 60 can move linearly with the slide seat 43 under the drive of the first drive member 44. A phased array detection probe is arranged on the second drive assembly 60, and the mounting shaft 10 of the phased array detection probe moves linearly with the second drive assembly 60, and the second drive assembly 60 can also drive the mounting shaft 10 to rotate circumferentially.

[0044] Further, see Figure 2 As shown, in this embodiment, the first driving member 44 is a stepper motor, a rotatable screw rod 45 is provided on the base 41, there are two slide rails 42, and the two slide rails 42 are arranged in parallel and spaced apart, the length direction of the screw rod 45 is consistent with the length direction of the slide rail 42, the screw rod 45 is located between the two slide rails 42, and the sliding seat 43 is connected to the screw rod 45 through a nut thread, and the stepper motor is fixed at one end of the base 41, and the output shaft of the stepper motor is connected to the screw rod 45 and can drive the screw rod 45 to rotate forward and reverse, so that the sliding seat 43 can move accurately on the slide rail 42, thereby improving the positioning accuracy of the detection device and facilitating control.

[0045] As an alternative, the first driving member 44 may also be a hydraulic cylinder or a pneumatic cylinder.

[0046] Reference Figure 2 and Figure 3 As shown, a vertical mounting frame 50 is fixedly provided on the sliding seat 43, and a through hole 51 is provided in the middle of the mounting frame 50. Strip holes 52 are provided on both sides of the mounting frame 50, and the length direction of the strip holes 52 is arranged along the height direction of the mounting frame 50. At least one mounting plate 53 is arranged at the through hole 51 of the mounting frame 50. In this embodiment, two mounting plates 53 are taken as an example, and both ends of the mounting plates 53 are fixedly connected to the mounting frame 50 by connecting bolts 54 inserted into the strip holes 52 on both sides of the mounting frame 50; a mounting shaft 10 is installed on each mounting plate 53, and one end of the mounting shaft 10 is rotatably connected to one side of the mounting plate 53 through a connecting sleeve 62, and the other end of the mounting shaft 10 extends outward along the length direction of the screw rod 45; the second driving assembly 60 is arranged on the mounting plate 53 and can drive the mounting shaft 10 to rotate.

[0047] Reference Figure 3As shown, in this embodiment, the second driving assembly 60 includes a knob 61 rotatably arranged on the mounting plate 53, both ends of the knob 61 have an indicating tip 611, and the side of the mounting plate 53 is provided with an angle scale value corresponding to the indicating tip 611; the central pin of the knob 61 passes through the mounting plate 53 and is connected to the connecting sleeve 62. The knob 61 can be used to realize the precise rotation of the mounting shaft 10. The indicating tips 611 are arranged at both ends of the knob 61 and correspond to the angle scale values ​​on the mounting plate 53, which improves the intuitiveness and accuracy of the operation, so that the operator can conveniently adjust and confirm the rotation angle of the mounting shaft 10. Each detection only requires manual operation once to rotate the mounting shaft 10 by 180°, which is more convenient and has a low cost.

[0048] The implementation principle of this embodiment is as follows: In this application, by setting the first drive component 40, the installation shaft 10 of the phased array detection probe can move in a straight line along its axial direction inside the hollow shaft, thereby ensuring that the phased array detection component 20 covers the entire area to be detected, thereby improving the comprehensiveness and accuracy of the detection. By setting the second drive component 60, the installation shaft 10 can rotate circumferentially inside the hollow shaft, ensuring that all directions of the hollow shaft can be covered during the detection process, thereby improving the coverage and reliability of the detection. The installation shaft 10 can completely detect the entire hollow shaft in one go, which not only realizes multi-directional high-precision detection of the hollow shaft, enhances the accuracy and reliability of the detection, but also significantly improves the efficiency of hollow shaft detection. Moreover, the overall degree of automation is high, and the movement of the installation shaft 10 is smooth and reliable, which is conducive to ensuring the detection accuracy.

[0049] Example 3 Reference Figure 4 As shown, this embodiment is substantially the same as the embodiment 2, except that in this embodiment, the second drive assembly 60 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. The servo motor 63, as the second drive assembly 60, can accurately control the rotation angle of the mounting shaft 10, thereby improving the automation level and detection accuracy of the detection device.

[0050] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A phased array detection probe for a hollow shaft, comprising a mounting shaft (10) for extending into the hollow shaft; characterized in that: At least two installation slots (11) are provided on the installation shaft (10); all the installation slots (11) are arranged at intervals along the length direction of the installation shaft (10), and at least two of the installation slots (11) are arranged at an angle of 70° to 110°; At least three groups of phased array detection components (20) are arranged in each of the installation slots (11); all the phased array detection components (20) are sequentially distributed along the length direction of the installation axis (10), and each group of the phased array detection components (20) comprises an arc-shaped circuit board (21) arranged in the installation slot (11) and a plurality of detection array element chips (22) arranged on the arc-shaped circuit board (21); in each of the installation slots (11), at least one of the arc-shaped circuit boards (21) has an inner mounting surface that is a cylindrical concave arc surface (211) coaxial with the installation 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 installation axis (10); At least 31 detection array element chips (22) are distributed in an array on each of the arc-shaped circuit boards (21); A cable (30) electrically connected to the phased array detection component (20) is also passed through the installation shaft (10), and the cable (30) passes through one end of the installation shaft (10).

2. The phased array detection probe for a hollow shaft according to claim 1, characterized in that: The number of the mounting notches (11) is two, and three groups of phased array detection components (20) are arranged in each mounting notch (11), and 32 detection array element chips (22) are distributed in an array on each curved circuit board (21); the inner mounting surface of one curved circuit board (21) in each mounting notch (11) is a cylindrical concave curved surface (211), and the inner mounting surfaces of the other two curved circuit boards (21) are concave concave curved surfaces (212), and the two curved circuit boards (21) with concave concave curved surfaces (212) are distributed on both sides of another curved circuit board (21) with a cylindrical concave curved surface (211).

3. The phased array detection probe for a hollow shaft according to claim 2, characterized in that: The detection array element chips (22) on the arc-shaped circuit board (21) having a cylindrical concave arc surface (211) have a spacing of 0.5 to 0.7 mm and a frequency of 4 Hz.

4. The phased array detection probe for a hollow shaft according to claim 2 or 3, characterized in that: The detection array element chips (22) on the arc-shaped circuit board (21) with a conical concave curved surface (212) have a spacing of 0.5 to 0.7 mm and a frequency of 4 Hz; the inner side surface of the arc-shaped circuit board (21) with a conical concave curved surface (212) has an inclination angle of 45° relative to the central axis of the installation shaft (10).

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

6. The phased array detection device for a hollow shaft according to claim 5, characterized in that: The first driving assembly (40) comprises a base (41) in the form of an elongated strip, a slide rail (42) is arranged on the upper side of the base (41) along the length direction of the base (41), a slide seat (43) is slidably arranged on the slide rail (42), and a first driving member (44) is arranged on the base (41) for driving the slide seat (43) to reciprocate on the slide rail (42).

7. The phased array detection device for a hollow shaft according to claim 6, characterized in that: The first driving member (44) is a stepping motor. A rotatable screw rod (45) is provided on the base (41). The length direction of the screw rod (45) is consistent with the length direction of the slide rail (42). The sliding seat (43) is connected to the screw rod (45) through a nut thread. The stepping motor is fixed to one end of the base (41). The output shaft of the stepping motor is connected to the screw rod (45) and can drive the screw rod (45) to rotate forward and reverse.

8. The phased array detection device for a hollow shaft according to claim 7, characterized in that: A vertical mounting frame (50) is fixedly arranged on the sliding seat (43), a through hole (51) is provided in the middle of the mounting frame (50), strip holes (52) are provided on both sides of the mounting frame (50), the length direction of the strip holes (52) is arranged along the height direction of the mounting frame (50), at least one mounting plate (53) is arranged at the through hole (51) of the mounting frame (50), and both ends of the mounting plate (53) are fixedly connected 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 the mounting shaft (10) is rotatably connected to one side of the mounting plate (53) via a connecting sleeve (62), and the other end of the mounting shaft (10) extends outwardly along the length direction of the screw rod (45); the second driving 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 a hollow shaft according to claim 8, characterized in that: The second driving assembly (60) comprises a knob (61) rotatably arranged on the mounting plate (53), both ends of the knob (61) having an indicating tip (611), and a side surface of the mounting plate (53) is provided with an angle scale value corresponding to the indicating tip (611); a central pin shaft 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 a hollow shaft according to claim 8, characterized in that: The second driving assembly (60) comprises a servo motor (63) fixedly mounted on the mounting plate (53), and an output shaft of the servo motor (63) passes through the mounting plate (53) and is connected to the connecting sleeve (62).

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