Ultrasonic detection mechanism for rim and spoke of motor train unit

Abstract

The utility model relates to an ultrasonic detection mechanism for a rim and a spoke of a motor train unit, and relates to the technical field of rim and spoke detection equipment. The ultrasonic detection mechanism comprises a base bracket and a mounting bracket, a supporting frame used for vertically placing a rim and a spoke is fixedly arranged on the base support. The mounting bracket is fixedly arranged on the base bracket and corresponds to the support frame; the mounting bracket is rotationally connected with a swing frame facing the direction of the supporting frame, and a plurality of first detection probes are distributed on the swing frame in the arc direction; a side moving frame is arranged on one side of the swing frame and can move in a reciprocating mode in the direction of the swing frame. A plurality of second detection probes facing the swing frame are distributed on the lateral moving frame; the ultrasonic detection mechanism further comprises a first driving part used for driving the swing frame to swing and a second driving part used for driving the lateral moving frame to transversely move. According to the ultrasonic detection mechanism, the first detection probe and the second detection probe can be conveniently adjusted, the universality is high, the adaptability is good, and all-dimensional dead-corner-free detection can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of wheel rim and spoke detection equipment, and in particular to an ultrasonic detection mechanism for wheel rims and spokes of EMUs. Background Art

[0002] Wheels are key components of the running systems of trains (locomotives), including EMUs. Wheels typically consist of a hub, spokes, and rims. The outer surface of the rim includes a flange and tread. The internal condition of the wheel and the presence of surface cracks are directly related to driving safety. The rapid development of railway speed increases and the widespread operation of high-speed EMUs have placed higher demands on wheel quality. To ensure wheelset quality and train safety, regular flaw detection of the rims and spokes is necessary. Currently, ultrasonic testing is a highly effective method for wheel flaw detection. Its principle is that if defects such as pores, cracks, delamination (gas inclusions in the defect), or inclusions in the medium (i.e., the wheel), are detected, ultrasonic waves are fully or partially reflected at the interface between the medium and the defect. The reflected ultrasound waves are received by a probe, and the depth, location, and shape of the defect within the workpiece can be determined based on the waveform characteristics. Ultrasonic testing offers advantages such as wide detection range, high sensitivity, high speed, low cost, and safety to humans. It can locate and quantify defects, making it suitable for nondestructive testing of rims and spokes.

[0003] The current inspection requirements for EMU wheel rims and spokes are as follows: equivalent defects in any part of the rim are not allowed to reach the equivalent size of a Ф3mm transverse hole; equivalent defects in any part of the spoke are not allowed to reach the equivalent size of a 15mm*3mm (length*depth) groove; equivalent defects in the rim are not allowed to reach the equivalent size of a 10mm*3mm groove.

[0004] In the prior art, commonly used ultrasonic testing equipment typically includes multiple pairs of single-transmitter / receiver probes and several integrated transmitter / receiver probes. For example, a Chinese patent (publication number: CN201548525U; publication date: August 11, 2010) discloses an ultrasonic testing device for train wheel spoke defects. The device utilizes four pairs of single-transmitter / receiver probes and six integrated transmitter / receiver probes. These probes are arranged in specific positions, enabling comprehensive detection of wheel spoke defects. Furthermore, the device utilizes a variety of probe types, such as straight and angled probes, to accommodate testing requirements at various locations and angles. While this device achieves high detection accuracy, its flexibility and applicability remain limited.

[0005] Existing ultrasonic detection equipment for wheel rims and spokes generally has problems such as poor adjustability and adaptability, limited detection range, and difficulty in achieving all-round detection without blind spots. Utility Model Content

[0006] In order to improve the adjustability of an ultrasonic detection mechanism for an EMU wheel rim and spoke, the present application provides an ultrasonic detection mechanism for an EMU wheel rim and spoke.

[0007] The ultrasonic detection mechanism for the wheel rim and spokes of an EMU provided in this application adopts the following technical solution:

[0008] An ultrasonic detection mechanism for the wheel rim and spokes of an EMU train comprises a base bracket and a mounting bracket; a support frame for vertically placing the wheel rim and spokes is fixed on the base bracket;

[0009] The mounting bracket is fixed on the base bracket and is arranged corresponding to the support bracket;

[0010] The mounting bracket is rotatably connected to a swing frame facing the support frame, and a plurality of first detection probes are distributed on the swing frame along an arc direction;

[0011] A side shift frame is provided on one side of the swing frame and the side shift frame can reciprocate in the direction of the swing frame; a plurality of second detection probes facing the direction of the swing frame are distributed on the side shift frame;

[0012] The ultrasonic detection mechanism also includes a first driving member for driving the swing frame to swing and a second driving member for driving the side shift frame to move laterally.

[0013] The technical solution in this application is mainly based on phased array technology and traditional ultrasonic testing technology. Phased array probes are combined with traditional UT probes. According to the distribution of probes on the inner side of the rim and the tread, a complete set of ultrasonic testing mechanisms is developed and designed. By installing a number of swing frames for first detection probes and a number of side shift frames for second detection probes, the position of the probe group is adjusted to realize circumferential, radial, oblique and axial fatigue defect detection of the rim and spokes of the EMU wheels, thereby enabling all-round and no-dead-angle detection of wheels, thereby improving the accuracy and efficiency of flaw detection.

[0014] Optionally, there are two swing frames, which are arranged on both sides of the mounting bracket. One end of the swing frame is rotatably connected to the mounting bracket through a rotating shaft, and the other end of the swing frame extends in an arc shape toward a side away from the mounting bracket. The side portion of the swing frame close to the mounting bracket has a connecting arm; the first driving member is arranged between the connecting arms of the two swing frames, and is used to drive the two swing frames to swing towards and away from each other.

[0015] By adopting the above technical solution, two swing frames are arranged on either side of the mounting bracket, and the other end of the swing frame extends in an arc shape away from the mounting bracket, so that the multiple first detection probes are distributed in two arc sections to adapt to the shape requirements of the rim and spokes. In this way, more first detection probes can be installed for simultaneous detection, thereby making the detection range wider, covering different areas of the rim and spokes, improving the detection coverage rate, and at the same time improving the detection efficiency. In this technical solution, the first drive member is used to synchronously drive the two swing frames to swing towards and away from each other, and the position of the swing frame can be quickly adjusted according to different detection requirements such as the size of the rim and spokes, thereby achieving efficient and accurate detection.

[0016] Optionally, the swing frame includes a first side plate and a second side plate arranged at intervals and a connecting rod for fixing the first side plate and the second side plate; a plurality of mounting frames are fixed between the first side plate and the second side plate, and the plurality of mounting frames are spaced apart along the length direction of the first side plate and the second side plate, and at least two of the first detection probes are correspondingly installed on each of the mounting frames.

[0017] By adopting the above technical solution, the entire swing frame has a frame structure with sufficient width, and multiple first detection probes can be arranged in the same row in the thickness direction of the rim spoke, thereby improving the detection coverage and detection accuracy, and ensuring the stability and rigidity of the structure while achieving lightweighting of the entire structure, reducing errors caused by mechanical vibration during the detection process.

[0018] Optionally, each of the mounting frames is provided with strip-shaped mounting holes on both sides, and the length direction of the strip-shaped mounting holes is consistent with the length direction of the connecting rod; each of the mounting frames is connected to several mounting plates by connecting bolts inserted into the strip-shaped mounting holes, and the first detection probe is fixed on the corresponding mounting plate.

[0019] By adopting this technical solution, the first detection probe can be flexibly installed and adjusted on the mounting frame. The strip-shaped mounting hole design allows the mounting plate to move within a certain range along the length of the connecting rod, making it easy to adjust the position of the first detection probe, ensuring that the probe can be accurately aligned with the area to be detected, and improving detection accuracy and adaptability.

[0020] Optionally, a mounting block is rotatably mounted on the bottom of the mounting plate, a knob for rotating the mounting block is provided on the upper side of the mounting plate, and a vertical adjustment plate is slidably mounted on one end of the mounting block; the first detection probe is connected to the end of the adjustment plate.

[0021] By adopting this technical solution, the installation angle and position of the first detection probe can be flexibly adjusted, adapting to the inspection requirements of different models of EMU wheel rims and spokes, improving detection flexibility and accuracy. This adjustable structure also simplifies the debugging process, reduces operational difficulty, and further improves detection efficiency.

[0022] Optionally, the connecting arms of the two swing frames are connected to a connecting shaft, and the connecting shaft is fixedly connected to a limiting swing arm extending radially along the connecting shaft; a vertical slide rail is fixedly provided on the side wall of the mounting bracket, and a slider is slidably provided on the slide rail, and the ends of the two limiting swing arms away from the connecting shaft are movably connected to the slider.

[0023] By adopting this technical solution, the sliding of the slider on the rail can act as a guide, making the swing frame's swing more stable, ensuring precise alignment of the probe during testing, and improving the accuracy and reliability of testing. It can also limit the swing range of the swing frame to prevent excessive swing amplitude, thereby enhancing the flexibility, adaptability, and reliability of the testing mechanism.

[0024] Optionally, at least two parallel and spaced guide rods are fixed on one side of the swing frame, the side shift frame is plate-shaped and is provided with through holes corresponding one to one with the guide rods, the side shift frame is slidably mounted on the guide rods through the through holes, the second driving member is fixed on the side of the swing frame and the output shaft of the second driving member is fixedly connected to the side shift frame.

[0025] By adopting this technical solution, the side-shifting frame can move smoothly along a predetermined path under the guidance of the guide rod, ensuring the precision and stability of the second detection probe's position during the inspection process, thereby improving detection accuracy and reliability. Furthermore, the fixed connection between the output shaft of the second drive element and the swing frame ensures efficient transmission of driving force, enhancing the system's response speed and dynamic performance, further improving detection efficiency.

[0026] Optionally, a limiting sleeve is provided in the through hole of the side shift frame, the limiting sleeve is sleeved on the corresponding guide rod and the end of the limiting sleeve can abut against the side of the swing frame.

[0027] By adopting the above technical solution, the limiting sleeve can effectively limit the lateral movement range of the side shift frame, preventing it from offsetting or detaching from the guide rod during movement, ensuring the precise positioning of the detection probe, thereby improving the stability and reliability of the detection.

[0028] Optionally, a plurality of mounting through holes are provided on the side shift frame, a guide rail is provided on one side of the mounting through hole, and the second detection probe is slidably connected to the guide rail via a guide adjustment block.

[0029] By adopting this technical solution, the second detection probe can slide on the guide rail, enabling precise detection of rim and spoke locations at different locations, improving detection flexibility and accuracy. Furthermore, the design of the guide adjustment block facilitates installation and adjustment of the second detection probe, further improving detection efficiency.

[0030] Optionally, the mounting bracket includes a first column and a second column fixedly arranged on the base bracket at intervals, a crossbeam being arranged on the upper ends of the first column and the second column; a connecting bracket for mounting the swing frame is fixedly arranged on the crossbeam;

[0031] The base bracket includes a rectangular frame structure formed by connecting a plurality of horizontal bars and a plurality of longitudinal bars. A plurality of rollers with a locking function are provided at the bottom of the base bracket; the rollers are distributed at the four corner positions of the base bracket, and the first column and the second column are respectively fixed to the middle positions on both sides of the base bracket;

[0032] The support frame is provided with a bearing seat, and a support shaft for inserting into the center hole of the rim spoke is rotatably connected in the bearing seat. The support frame is also provided with a screw fastening member for locking the rotation of the rim spoke.

[0033] By adopting the above-mentioned technical solution, the design of the bearing seat and support shaft on the support frame allows the wheel rim and spokes to be easily rotated, thereby enabling detection at different positions. The screw fastener can position the wheel rim and spokes, effectively preventing them from rotating during the detection process, thereby improving the accuracy and reliability of the detection. The structural design of the entire mounting bracket not only ensures the stability and reliability of the detection mechanism, but also facilitates production and assembly at a low cost. The rectangular frame structure of the base bracket and the roller design with a locking function not only increase the mobile flexibility of the detection mechanism, but also ensure the stability of the mechanism during the detection process.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. In this application, the position of the probe group is adjusted by a swing frame and a side shift frame to realize the circumferential, radial, oblique and axial fatigue defect detection of the wheel rim and spoke of the EMU wheel, thereby being able to detect the wheels in all directions without blind spots, thereby improving the accuracy and efficiency of flaw detection.

[0036] 2. In this application, by setting up a number of fine-tuning structures, the positions of the first detection probe and the second detection probe can be accurately adjusted, thereby meeting a variety of different needs, with high versatility, good adaptability, and more accurate and reliable detection.

[0037] 3. In this application, automatic adjustment is achieved through the first driving member and the second driving member, which has a high degree of automation and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the ultrasonic detection mechanism of this application.

[0039] Figure 2 It is a partial structural diagram of the ultrasonic detection mechanism of the present application from the first perspective.

[0040] Figure 3 It is a partial structural diagram of the second viewing angle of the ultrasonic detection mechanism of the present application.

[0041] Figure 4 This is a schematic diagram of the installation structure of the first detection probe in this application.

[0042] Figure 5 yes Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0043] Figure 6 yes Figure 3 Schematic diagram of the local enlarged structure at point B in the middle.

[0044] In the picture:

[0045] 10. Base bracket; 11. Horizontal bar; 12. Vertical bar; 13. Roller;

[0046] 20. Mounting bracket; 21. Rotating shaft; 22. Slide rail; 23. First column; 24. Second column; 25. Crossbeam; 26. Connecting bracket; 27. Limit block;

[0047] 30. Support frame; 31. Support frame; 32. Bearing seat; 33. Support shaft; 34. Screw fastener; 341. Threaded rod; 342. Fastener head; 35. Mounting member; 36. Support column; 37. Connecting column;

[0048] 40. Swing frame; 41. Connecting arm; 42. First side panel; 43. Second side panel; 44. Connecting rod; 45. Mounting frame; 451. Bar-shaped mounting hole; 452. Connecting bolt; 453. Mounting plate; 454. Mounting block; 455. Knob; 456. Adjustment plate; 46. Connecting shaft; 47. Limit swing arm; 48. Slider;

[0049] 50. First detection probe;

[0050] 60. Side shift frame; 61. Guide rod; 62. Limit sleeve; 63. Mounting through hole; 64. Guide rail; 65. Guide adjustment block;

[0051] 70. Second detection probe;

[0052] 80. First driving member;

[0053] 90. Second driving member;

[0054] 100. Rim and spokes. DETAILED DESCRIPTION

[0055] The following will be combined with the Figure 1 - Attachment Figure 6 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 and do not represent all possible implementations. Those skilled in the art can fully combine the embodiments of the present invention to derive other embodiments without inventive work, and these embodiments are also within the scope of protection of the present invention.

[0056] The ultrasonic testing mechanism in this application is mainly used for fatigue damage detection of EMU wheel rims and spokes, and can also be used for pre-delivery inspection of wheel rims and spokes. Of course, it can also be used for the inspection of other similar wheel products.

[0057] Reference Figure 1 As shown, the ultrasonic detection mechanism of the wheel rim and spoke of the EMU in the present application includes a base bracket 10, a mounting bracket 20 and a support frame 30; wherein, the base bracket 10 includes a rectangular frame structure formed by a plurality of cross bars 11 and a plurality of longitudinal bars 12 fixedly connected, and a plurality of rollers 13 with a locking function are provided at the bottom of the base bracket 10; for example, it can be a rectangular frame structure formed by two cross bars 11 and two longitudinal bars 12 fixedly connected, and both ends of the two longitudinal bars 12 are fixed to the upper side of the end of the cross bar 11 by angle irons and bolts, and the number of rollers 13 is four, and the four rollers 13 are distributed at the bottom positions of the two ends of the two cross beams 25. When the entire ultrasonic detection mechanism needs to be moved, the rollers 13 are used for transfer by rolling, which is more labor-saving. When it arrives at the predetermined place and needs to be used, the rollers 13 are locked by the locking function of the locking structure to prevent them from moving, thereby ensuring the stability and reliability of the use of the entire ultrasonic detection mechanism.

[0058] Reference Figure 1 As shown, the mounting bracket 20 includes a first column 23 and a second column 24 fixed at intervals on the base bracket 10, the lower end of the first column 23 is fixed to the upper middle position of one of the longitudinal rods 12 by an angle iron and bolts, and the lower end of the second column 24 is fixed to the upper middle position of the other longitudinal rod 12 by an angle iron and bolts, and a cross beam 25 is mounted on the upper ends of the first column 23 and the second column 24; a connecting bracket 26 is fixed to the middle of the cross beam 25, and the specific installation position of the connecting bracket 26 on the cross beam 25 can be adjusted according to actual needs.

[0059] Reference Figure 1As shown, the support frame 30 is disposed below the connecting bracket 26 and comprises two isosceles trapezoidal support frames 31. The two support frames 31 are spaced apart and arranged in parallel and are both mounted on the two crossbars 11. Support columns 36 are also provided in the middle of the two support frames 31. The upper sides of the two support frames 31 are connected to the first column 23 and the second column 24 via connecting columns 37 to enhance the support strength and stability of the support frames 31. Bearing blocks 32 are provided on the upper sides of the two support frames 31. Support shafts 33, which are rotatably connected to the bearings in the two bearing blocks 32 and are inserted into the center holes of the rim spokes 100. The rim spokes 100 to be inspected are placed vertically between the two support frames 31. The support shafts 33 pass through the center holes of the rim spokes 100 to support the rim spokes 100. The rim spokes 100 can be rotated to adjust to different inspection positions. The sides of the two support frames 31 are also provided with screw clamps 34 for locking the rotation of the rim spokes 100; the sides of the support frames 31 are fixed with mounting members 35, and the mounting members 35 are provided with threaded holes. The screw clamps 34 include a threaded rod 341 and a clamping head 342 at the end of the threaded rod 341. The threaded rod 341 passes through the threaded hole and is threadedly connected to the mounting member 35. The threaded rod 341 is rotated, and the clamping head 342 at the end of the threaded rod 341 can be pressed against the side of the rim spoke 100. Similar to the principle of the brake disc, the clamping head 342 can limit the rotation of the rim spoke 100, thereby facilitating and accurately detecting the rim spoke 100.

[0060] Reference Figure 2 and Figure 3 As shown, the connecting bracket 26 is rotatably connected to a swinging frame 40 facing the support frame 30. There are two swinging frames 40, which are respectively located on both sides of the connecting bracket 26. One end of the swinging frame 40 is rotatably connected to the mounting bracket 20 through a rotating shaft 21, and the other end of the swinging frame 40 extends in an arc shape toward a side away from the mounting bracket 20. A number of first detection probes 50 are distributed along the arc direction on the two swinging frames 40; the side portion of the end of the swinging frame 40 close to the mounting bracket 20 has a connecting arm 41; a first driving member 80 for driving the swinging frame 40 to swing is provided between the two swinging frames 40. The first driving member 80 can be a hydraulic cylinder or an air cylinder. The shell of the first driving member 80 is rotatably connected to the connecting arm 41 of one of the swinging frames 40, and the output shaft of the first driving member 80 is rotatably connected to the connecting arm 41 of the other swinging frame 40. When the first driving member 80 is working, it can drive the two swinging frames 40 to swing towards and away from each other.

[0061] Reference Figure 2 and Figure 3As shown, a side shift frame 60 is provided on one side of each of the two swing frames 40. The side shift frame 60 is plate-shaped, and at least two parallel and spaced guide rods 61 are fixed to one side of the swing frame 40. One end of the guide rod 61 is fixedly connected to the side of the swing frame 40, and the other end of the guide rod 61 extends away from the swing frame 40. The side shift frame 60 is provided with a through hole corresponding to the guide rod 61. A limit sleeve 62 is provided in the through hole of the side shift frame 60. One end of the limit sleeve 62 is fixed to the side shift frame 60 via a flange, and the other end of the limit sleeve 62 extends toward the swing frame 40. The limit sleeve 62 is sleeved on the corresponding guide rod 61, and the end of the limit sleeve 62 can abut against the side of the swing frame 40. A second driving member 90 is provided on the side of the swing frame 40 for driving the side shift frame 60 to move laterally on the guide rod 61. The second driving member 90 can be a hydraulic cylinder or a pneumatic cylinder. The shell end of the second driving member 90 is fixedly arranged on the side of the swing frame 40, and the output shaft of the second driving member 90 is fixedly connected to the side shift frame 60. A number of second detection probes 70 facing the swing frame 40 are distributed on the side shift frame 60. The side shift frame 60 can move smoothly along the predetermined path under the guidance of the guide rod 61, ensuring the accuracy and stability of the position of the second detection probe 70 during the detection process, thereby improving the accuracy and reliability of the detection. The limiting sleeve 62 can reduce the sliding wear of the guide rod 61 and the side shift frame 60, and at the same time effectively limit the lateral movement range of the side shift frame 60, preventing it from offsetting or detaching from the guide rod 61 during the movement, ensuring the precise positioning of the detection probe, and thus improving the stability and reliability of the detection.

[0062] Further, refer to Figure 2 and Figure 3 As shown, the swing frame 40 includes a first side plate 42 and a second side plate 43 spaced apart and connected by a plurality of connecting rods 44. A plurality of mounting frames 45 are fixedly disposed between the first and second side plates 42, 43. These mounting frames 45 are spaced apart along the lengths of the first and second side plates 42, 43, and each mounting frame 45 is mounted with at least two first detection probes 50. The entire swing frame 40 is a frame structure with sufficient width to accommodate multiple first detection probes 50 arranged in a row along the thickness direction of the rim spokes 100. This improves detection coverage and accuracy, while ensuring structural stability and rigidity while achieving overall structural lightweighting, and reduces errors caused by mechanical vibration during the detection process.

[0063] Reference Figure 4As shown, each mounting frame 45 has strip-shaped mounting holes 451 on both sides. The length of the strip-shaped mounting holes 451 is aligned with the length of the connecting rod 44. The mounting frames 45 are also provided with length scales along the length of the strip-shaped mounting holes 451. Each mounting frame 45 is connected to a plurality of mounting plates 453 via connecting bolts 452 inserted into the strip-shaped mounting holes 451. The first detection probes 50 are fixed to corresponding mounting plates 453. This allows the mounting plates 453 to move within a certain range along the length of the connecting rod 44, enabling flexible installation and adjustment of the first detection probes 50 on the mounting frame 45. This facilitates adjustment of the position of the first detection probes 50, ensuring that the probes are accurately aligned with the area to be detected, and improving detection accuracy and adaptability.

[0064] Reference Figure 4 As shown, a mounting block 454 is rotatably mounted on the bottom of the mounting plate 453. A knob 455 for rotating the mounting block 454 is provided on the upper side of the mounting plate 453. An angle scale is provided on the mounting plate 453 along the rotation direction of the knob 455. A vertical adjustment plate 456 is slidably mounted on one end of the mounting block 454. The adjustment plate 456 and the mounting block 454 are connected by a guide rail assembly. The adjustment plate 456 is provided with a plurality of locking holes spaced along the length direction. The locking holes are inserted into the locking holes and can be locked and fixed after the positions of the adjustment plate 456 and the mounting block 454 are adjusted into place. The first detection probe 50 is connected to the end of the adjustment plate 456. This allows the installation angle and position of the first detection probe 50 to be flexibly adjusted, thereby being able to meet the detection requirements of different models of EMU wheel rims and spokes 100, thereby improving the flexibility and accuracy of detection. At the same time, this adjustable structure simplifies the debugging process, reduces the difficulty of operation, and further improves the detection efficiency.

[0065] Reference Figure 5 As shown, the side shift frame 60 is provided with a plurality of mounting holes 63, one side of which is provided with a guide rail 64. The second detection probe 70 is slidably connected to the guide rail 64 via a guide adjustment block 65. The same structure as that between the first detection probe 50 and the mounting plate 453 can also be provided between the second detection probe 70 and the guide adjustment block 65, which will not be repeated here. The second detection probe 70 can slide on the guide rail 64, thereby achieving precise detection of the rim spokes 100 at different positions, improving the flexibility and accuracy of the detection. Furthermore, the design of the guide adjustment block 65 facilitates the installation and adjustment of the second detection probe 70, further improving detection efficiency.

[0066] Reference Figure 6As shown, each swing frame 40 has a connecting arm 41 on its first side plate 42 and second side plate 43. A connecting shaft 46 is connected between the two connecting arms 41 of the same swing frame 40. The end of the connecting shaft 46 is used to connect to the first drive member 80. The connecting shaft 46 is also fixedly connected to a limiting swing arm 47 extending radially along the connecting shaft 46. A vertical slide rail 22 is fixedly provided on the side wall of the mounting bracket 20. The end of the slide rail 22 has a limiting block 27. A slider 48 is slidably provided on the slide rail 22. The ends of the two limiting swing arms 47 away from the connecting shaft 46 are movably connected to the slider 48. The sliding of the slider 48 on the slide rail 22 acts as a guide, making the swing of the swing frame 40 more stable, ensuring the precise alignment of the probe during the detection process, and improving the accuracy and reliability of the detection. At the same time, the swing range of the swing frame 40 can be limited to prevent excessive swing amplitude, thereby enhancing the flexibility, adaptability, and reliability of the detection mechanism.

[0067] The implementation principle of this embodiment is as follows: the two swing frames 40 of the present application are respectively arranged on both sides of the mounting bracket 20, and the other end of the swing frame 40 is curved and extended toward the side away from the mounting bracket 20, so that a plurality of first detection probes 50 are distributed in two arc sections to adapt to the shape requirements of the rim spoke 100. A large number of first detection probes 50 can be installed on each swing frame 40 for simultaneous detection, so that the detection range is wide and can cover different areas of the rim spoke 100, thereby improving the detection coverage rate and the detection efficiency. In the present application, the first driving member 80 is used to synchronously drive the two swing frames 40 to swing towards and away from each other, and the position of the swing frame 40 is quickly adjusted according to different detection requirements such as the size of the rim spoke 100, thereby achieving efficient and accurate detection. In the present application, the second driving member 90 is also used to drive the lateral movement of the two side shifting frames 60 to adjust the distance between the second detection probe 70 and the rim spoke 100 to be detected, thereby improving the detection accuracy.

[0068] The technical solution in this application is based on phased array technology and traditional ultrasonic testing technology. Phased array probes are combined with traditional UT probes. According to the distribution of probes on the inner side of the rim and the tread, a complete set of ultrasonic testing mechanisms is developed and designed. By installing a swing frame 40 for installing several first detection probes 50 and a side shift frame 60 for installing several second detection probes 70, the position of the probe group is adjusted to realize circumferential, radial, oblique and axial fatigue defect detection of the rim and spoke 100 of the EMU wheel, thereby enabling all-round and no-dead-angle detection of the wheel, thereby improving the accuracy and efficiency of flaw detection.

[0069] The examples of this specific embodiment are all 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, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. An ultrasonic detection mechanism for a rim and spoke of a train set, comprising a base bracket (10) and a mounting bracket (20); a support frame (30) for vertically placing the rim and spoke (100) is fixedly provided on the base bracket (10); The mounting bracket (20) is fixed on the base bracket (10) and is arranged corresponding to the support bracket (30); It is characterized by: The mounting bracket (20) is rotatably connected to a swing bracket (40) facing the support bracket (30), and a plurality of first detection probes (50) are distributed on the swing bracket (40) along an arc direction; A side shift frame (60) is provided on one side of the swing frame (40), and the side shift frame (60) is capable of reciprocating in the direction of the swing frame (40); a plurality of second detection probes (70) facing the direction of the swing frame (40) are distributed on the side shift frame (60); The ultrasonic detection mechanism further includes a first driving member (80) for driving the swing frame (40) to swing and a second driving member (90) for driving the side shift frame (60) to move laterally.

2. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 1, characterized in that: There are two swing frames (40), and the two swing frames (40) are respectively arranged on both sides of the mounting bracket (20). One end of the swing frame (40) is rotatably connected to the mounting bracket (20) through a rotating shaft (21), and the other end of the swing frame (40) is curved and extended to a side away from the mounting bracket (20). The side portion of one end of the swing frame (40) close to the mounting bracket (20) has a connecting arm (41); the first driving member (80) is arranged between the connecting arms (41) of the two swing frames (40) and is used to drive the two swing frames (40) to swing towards and away from each other.

3. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 2, characterized in that: The swing frame (40) comprises a first side plate (42) and a second side plate (43) arranged at intervals, and a connecting rod (44) for connecting the first side plate (42) and the second side plate (43); a plurality of mounting frames (45) are fixed between the first side plate (42) and the second side plate (43), and the plurality of mounting frames (45) are distributed at intervals along the length direction of the first side plate (42) and the second side plate (43), and at least two of the first detection probes (50) are correspondingly mounted on each of the mounting frames (45).

4. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 3, characterized in that: Each of the mounting frames (45) is provided with strip-shaped mounting holes (451) on both sides, and the length direction of the strip-shaped mounting holes (451) is consistent with the length direction of the connecting rod (44); each of the mounting frames (45) is connected to a plurality of mounting plates (453) via connecting bolts (452) inserted into the strip-shaped mounting holes (451), and the first detection probe (50) is fixed on the corresponding mounting plate (453).

5. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 4, characterized in that: A mounting block (454) is rotatably mounted on the bottom of the mounting plate (453); a knob (455) for rotating the mounting block (454) is provided on the upper side of the mounting plate (453); a vertical adjustment plate (456) is slidably mounted on one end of the mounting block (454); and the first detection probe (50) is connected to the end of the adjustment plate (456).

6. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 2, characterized in that: The connecting arms (41) of the two swing frames (40) are both connected to a connecting shaft (46), and the connecting shaft (46) is fixedly connected to a limiting swing arm (47) extending radially along the connecting shaft (46); a vertical slide rail (22) is fixedly provided on the side wall of the mounting bracket (20), and a slider (48) is slidably provided on the slide rail (22), and one end of the two limiting swing arms (47) away from the connecting shaft (46) is movably connected to the slider (48).

7. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 1, characterized in that: At least two parallel and spaced guide rods (61) are fixed on one side of the swing frame (40); the side shift frame (60) is plate-shaped and has through holes corresponding to the guide rods (61) on the side shift frame (60); the side shift frame (60) is slidably mounted on the guide rods (61) through the through holes; the second driving member (90) is fixed on the side of the swing frame (40) and the output shaft of the second driving member (90) is fixedly connected to the side shift frame (60).

8. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 7, characterized in that: A limiting sleeve (62) is provided in the through hole of the side shift frame (60), the limiting sleeve (62) is sleeved on the corresponding guide rod (61), and the end of the limiting sleeve (62) can abut against the side of the swing frame (40).

9. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 8, characterized in that: The side shift frame (60) is provided with a plurality of mounting through holes (63), one side of the mounting through hole (63) is provided with a guide rail (64), and the second detection probe (70) is slidably connected to the guide rail (64) via a guide adjustment block (65).

10. The ultrasonic detection mechanism for EMU wheel rims and spokes according to claim 1, characterized in that: The mounting bracket (20) comprises a first column (23) and a second column (24) fixedly mounted on the base bracket (10) at intervals, a crossbeam (25) being mounted on the upper ends of the first column (23) and the second column (24); a connecting bracket (26) for mounting the swing frame (40) is fixedly mounted on the crossbeam (25); The base bracket (10) comprises a rectangular frame structure formed by connecting a plurality of transverse bars (11) and a plurality of longitudinal bars (12); a plurality of rollers (13) with a locking function are provided at the bottom of the base bracket (10); the rollers (13) are distributed at the four corner positions of the base bracket (10); the first column (23) and the second column (24) are respectively connected to the middle positions of both sides of the base bracket (10); The support frame (30) is provided with a bearing seat (32), and a support shaft (33) for inserting into the center hole of the rim spoke (100) is rotatably connected in the bearing seat (32). The support frame (30) is also provided with a screw fastening member (34) for locking the rotation of the rim spoke (100).

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