Solid axle flaw detection apparatus

Abstract

The utility model discloses a kind of solid axle flaw detection detection equipment, including mechanical arm, detection equipment and detection gripper, detection gripper is located on mechanical arm, to hold detection equipment;Detection equipment includes installation box, annular electromagnet, sealing cover, positioning shaft, two detection probes and probe moving assembly, annular electromagnet is located at installation box one end, for adsorbing on detection surface;Probe moving assembly is located in installation box, drive two detection probes rotate around shaft, the adjusting component in it can independently adjust two detection probe positions, sealing cover is located at annular electromagnet end, pass through telescopic sealing structure and detection probe linkage, ensure that detection probe is sealed reliable when moving;Positioning shaft is located in sealing cover middle part, and is opened with coupling liquid spraying hole.Advantage, realize detection probe automatic rotation and independent position adjustment by probe moving assembly, support multi-angle, multi-stroke flaw detection, without replacing probe, realize to axle dead angle comprehensive detection, it is convenient to operate and detection reliability is high.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic flaw detection, specifically to a flaw detection and testing device for solid axles. Background Technology

[0002] Wheel axles are key components for train operation and are also the main components that bear the weight of motors and wheelsets. The safety performance of wheel axles is crucial to the normal operation of trains. During train operation, the axles are subjected to complex forces and are prone to fatigue cracks. Moreover, the location of the cracks is hidden. If the axle suffers fatigue damage and continues to propagate, it will lead to axle breakage, which will seriously affect train safety, operational efficiency and economic benefits.

[0003] Therefore, the detection of surface and internal defects of axles is of great significance to ensuring train operation safety. In order to detect fatigue cracks in axles in a timely manner, prevent axle breakage accidents, and ensure the safe operation of trains, it is necessary to conduct flaw detection on axles regularly. Due to its advantages such as non-destructive and high sensitivity, ultrasonic flaw detection technology has become the mainstream technology for axle defect detection. Existing axle ultrasonic flaw detection equipment is mainly divided into two categories: fixed automated flaw detection systems and portable flaw detection devices.

[0004] Fixed automated systems are typically integrated into train maintenance depots. After the axle is disassembled, it is clamped and rotated by a mechanical device, and multiple ultrasonic probes scan it at preset positions. Although the level of automation is high, this type of equipment has significant drawbacks: 1. The fixed detection position cannot adapt to the complex geometric contour changes of different types of axles (such as freight car axles, bus axles, and EMU axles). The diameter and length of key parts such as journals and wheel seats of different types of axles vary greatly. The fixed position of the probe will lead to blind spots or decreased sensitivity, resulting in a high risk of missed detection. 2. The equipment is highly specialized but lacks flexibility. Each testing line can usually only test a specific model of axle. If a new model is to be tested, it often requires complicated and expensive modifications to the mechanical structure and probe layout, which is time-consuming and labor-intensive. While portable flaw detection devices offer relatively high flexibility, their testing process heavily relies on the operator's experience and sense of responsibility. During testing, the position and angle of the probe need to be manually adjusted, and coupling agent needs to be applied. Different ultrasonic probes need to be used for testing different parts of the same axle type or different models of axles. Furthermore, each time a probe is changed, a flaw detection process corresponding to that probe needs to be selected. The entire flaw detection process is labor-intensive and inefficient.

[0005] In summary, existing ultrasonic flaw detection equipment for train axles, whether automated or manual, suffers from technical bottlenecks such as "limited detection location and poor adaptability" and "complex probe distance adjustment process." These limitations severely restrict the improvement of detection efficiency and the reliability of detection results, failing to meet the urgent needs of modern railway operation and maintenance for multi-model, high-efficiency, and high-precision flaw detection.

[0006] Therefore, there is an urgent need for a new type of ultrasonic flaw detection equipment that can quickly adapt to the geometric characteristics of different axle models, achieve precise probe detection position and adaptive adjustment, and improve detection efficiency and reliability. Utility Model Content

[0007] The technical problem to be solved by this utility model is that the existing solid axle flaw detection equipment mentioned in the background art has a single detection position, cannot be adapted to adjustment, and has a complicated probe distance adjustment problem.

[0008] To address the aforementioned technical problems, a solid axle flaw detection device is proposed, achieved through the following technical solution: A solid axle flaw detection device includes a robotic arm, a detection device, and a detection gripper. The detection gripper is mounted on the robotic arm and can move to grip the detection device. The detection device includes a mounting box, a ring electromagnet, a sealing cover, a positioning shaft, a detection probe, and a probe moving assembly. The ring electromagnet is located at one end of the mounting box, and the detection device is attracted to the detection surface by the ring electromagnet. The probe moving assembly is located inside the mounting box and connected to the detection probes. There are two detection probes, and the probe moving assembly drives the two detection probes to rotate along the axis of the mounting box. The probe moving assembly includes an adjustment assembly, which is connected to the two detection probes respectively, and the positions of the two detection probes are adjusted independently by the adjustment assembly. The sealing cover is located at the end of the ring electromagnet and is connected to the detection probes through a telescopic sealing structure. The telescopic sealing structure moves with the detection probes to ensure the sealing effect of the sealing cover. The positioning shaft is located in the middle of the sealing cover, and a spray hole for spraying coupling fluid during flaw detection is opened on the positioning shaft.

[0009] In a preferred embodiment of the present invention, the probe moving assembly includes a moving assembly and a rotating assembly, which are connected. The rotating assembly drives the moving assembly to rotate. The rotating assembly is designed to facilitate the rotation of the detection probe, enabling multi-angle flaw detection and ensuring comprehensive flaw detection of the axle. This eliminates the need to replace probes with different angles, thus improving efficiency during the flaw detection process.

[0010] In a preferred embodiment of the present invention, the moving component includes a slide rail and a slider, and the detection probe is mounted on the slider via a probe mounting block; the rotating component includes a motor, a main gear, a driven gear, and a rotating connector, with the main gear mounted on the motor, the driven gear meshing with the main gear, and the driven gear and the rotating connector respectively connected to the moving component. The moving component facilitates the movement of the detection probe, enabling multi-stroke flaw detection, ensuring all-around flaw detection of the axle, and improving efficiency during the flaw detection process.

[0011] In a preferred embodiment of the present invention, the detection probe is provided with a guide stroke hole, a compression spring, and a guide screw. The guide screw is inserted into the guide stroke hole and connected to the probe mounting block. The compression spring is sleeved on the outside of the guide screw. The distance between the detection probe and the probe mounting block dynamically changes along the guide screw under the action of the compression spring. This arrangement ensures that the detection probe can maintain a reasonable and stable coupling layer distance with the detection surface even on uneven surfaces or surfaces with height differences, thus guaranteeing the detection effect.

[0012] In a preferred embodiment of the present invention, the adjustment assembly includes a worm gear mechanism, a gear and rack mechanism, and an adjustment shaft. In the gear and rack mechanism, the rack is mounted on the probe mounting block on the detection probe. In the worm gear mechanism, the worm is coaxially connected to the gear in the gear and rack mechanism. The adjustment shaft passes through the sealing cover and is connected to the worm in the worm gear mechanism. The adjustment assembly facilitates the quick and easy adjustment of the positions of the two detection probes, making it convenient to use.

[0013] In a preferred embodiment of the present invention, the telescopic sealing structure includes a telescopic sheet and a connecting skirt. The telescopic sheet connects the sealing cover and the connecting skirt, and the connecting skirt connects to the detection probe. This design prevents coupling fluid from flowing into the equipment during the detection process and causing damage to the equipment, while also ensuring the normal position adjustment of the detection probe.

[0014] In a preferred embodiment of the present invention, a ball bearing plate with rolling balls is provided on the detection probe, wherein the rolling balls in the ball bearing plate are higher than the surface of the detection probe. This arrangement avoids the problem of damage caused by friction between the detection probe and the detection surface during the detection process, thereby improving the service life of the detection probe.

[0015] In a preferred embodiment of the present invention, an annular sealing ring is provided on the sealing cover. The annular sealing ring, the sealing cover, and the detection surface form a coupling liquid cavity, and the end face of the annular sealing ring is higher than the spray hole on the positioning shaft. With this arrangement, the coupling liquid fills the coupling liquid cavity during detection, providing a good foundation for the stability and accuracy of the detection.

[0016] In a preferred embodiment of the present invention, the detection gripper includes two grippers, a movable gripper bar, a fixed gripper bar, and a servo drive. The two grippers are connected to the servo drive, which adjusts the distance between the two grippers. The movable gripper bar is mounted on the grippers, and the fixed gripper bar is mounted on the mounting box. The movable gripper bar and the fixed gripper bar are detachably coupled through a slot. This configuration facilitates quick connection between the detection equipment and the robotic arm, and makes use and replacement convenient.

[0017] The advantages of this utility model compared with the prior art are: The technical solution of this utility model uses a moving component to install the detection probe onto a rotating component, allowing the detection probe to automatically rotate under the action of the rotating component during the detection process, thus achieving multi-angle flaw detection. An adjusting component controls the movement of two detection probes along the moving component, allowing for easy adjustment of the individual positions of the two probes as needed. This enables multi-stroke flaw detection. Through the cooperation of the adjusting component, the moving component, and the rotating component, multi-angle, multi-stroke flaw detection of the axle is achieved, ensuring all-around flaw detection of the axle without the need to change probes of different angles. This convenient and quick method also guarantees the detection effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present application (including the robotic arm); Figure 2 A three-dimensional schematic diagram of the testing equipment; Figure 3 This is a three-dimensional schematic diagram of the sealing cap; Figure 4 This is a three-dimensional schematic diagram of the positioning axis; Figure 5 This is a partial sectional view of the testing equipment during the inspection of wheel axles; Figure 6 A three-dimensional schematic diagram of the moving component (including the detection probe and adjustment component); Figure 7 A partial cross-sectional view of the detection probe; Figure 8 This is a three-dimensional schematic diagram of the rotating component; Figure 9 Exploded view of the testing equipment; Figure 10 A three-dimensional schematic diagram of the inspection gripper; Explanation of reference numerals in the attached drawings: 1-Detection equipment, 11-Mounting box, 12-Annular electromagnet, 13-Sealing cover, 14-Rotating component mounting plate, 15-Probe mounting plate, 16-Annular sealing ring, 17-Probe mounting port, 2-Detection gripper, 21-Grip piece, 22-Modible clamping bar, 23-Fixed clamping bar, 24-Servo drive component, 25-Limiting groove, 26-Limiting block, 3-Positioning shaft, 31-Positioning shaft mounting base, 32-Spray hole, 4-Detection probe, 4 1-Telescopic sealing structure, 42-Ball plate, 43-Compression spring, 44-Guide screw, 45-Guide stroke hole, 46-Telescopic plate, 47-Connecting skirt, 5-Moving assembly, 51-Slide rail, 52-Slider, 53-Probe mounting block, 6-Adjusting assembly, 61-Worm gear mechanism, 62-Gear and rack mechanism, 63-Mounting plate, 64-Adjusting shaft, 7-Rotating assembly, 71-Motor, 72-Main gear, 73-Driven gear, 74-Rotating connector. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figure 1 - Appendix Figure 10 The technical solutions in the embodiments of this utility model will be described in detail below. Example

[0020] like Figure 1 and Figure 9 As shown, a solid axle flaw detection and inspection device includes a robotic arm, an inspection device 1, and an inspection gripper 2. The inspection device 1 is connected to the robotic arm through the inspection gripper 2. The robotic arm drives the inspection device 1 to inspect the axle, avoiding manual inspection by workers.

[0021] The testing device 1 includes a mounting box 11, an annular electromagnet 12, a sealing cover 13, a positioning shaft 3, a testing probe 4, and a probe moving assembly. The annular electromagnet 12 is installed at one end of the mounting box 11. The testing probe 4 is connected to the probe moving assembly, which is installed inside the mounting box 11. The sealing cover 13 is connected to the testing probe 4, and an annular sealing ring 16 is provided on the sealing cover 13. The annular sealing ring 16, the sealing cover 13, and the testing surface form a coupling fluid cavity. The positioning shaft 3 is installed at the center of the sealing cover 13 and can rotate along the sealing cover 13. During testing, the positioning shaft 3 is inserted into the positioning hole on the end face of the wheel axle.

[0022] The main function of the mounting box 11 is to serve as a carrier for the installation of various components in the testing equipment 1. The annular electromagnet 12, the sealing cover 13, the positioning shaft 3, the testing probe 4, and the probe moving assembly are all installed on the mounting box 11.

[0023] The main function of the ring electromagnet 12 is to attract the detection device 1 to the detection end face of the wheel axle during detection, so as to facilitate the detection of the wheel axle.

[0024] The main function of the sealing cover 13 is that when the annular electromagnet 12 is attracted to the detection surface of the wheel axle, the annular sealing ring 16, the sealing cover 13 and the detection surface can form a coupling liquid cavity, and the coupling liquid is sprayed into the coupling liquid cavity through the spray hole 32 opened on the positioning shaft 3 until the coupling liquid fills the coupling liquid cavity, which provides a good foundation for detection stability and accuracy.

[0025] The detection probe 4 is an existing device, whose main function is to emit ultrasound to detect defects inside the wheel axle.

[0026] The main function of the probe moving assembly is to move the detection probe 4 horizontally, adjust the distance between the two detection probes 4 and the relative position of each detection probe 4 to achieve stroke detection. In addition, the probe moving assembly can drive the detection probe 4 to rotate relative to the wheel axle to achieve multi-angle detection.

[0027] Definition: In this embodiment, the ring electromagnet 12 and the mounting box 11 are used as references. The end of the mounting box 11 where the ring electromagnet 12 is mounted is the upper end, and the other end is the lower end.

[0028] like Figure 1 and Figure 2 As shown, the mounting box 11 is a hollow metal tube with a circular cross-section. The two ends of the mounting box 11 are open. In order to facilitate the installation of the rotating component 7, a rotating component mounting plate 14 is installed inside the mounting box 11.

[0029] The rotating component mounting plate 14 is a circular metal plate. The outer diameter of the rotating component mounting plate 14 is the same as the inner diameter of the mounting box 11. The rotating component mounting plate 14 is connected to the outer wall of the mounting box 11 by screws.

[0030] To facilitate the installation of the motor 71 and gear in the rotating assembly 7, corresponding clearance holes are provided on the rotating assembly mounting plate 14, and the motor 71 is mounted on the rotating assembly mounting plate 14 by screws.

[0031] The annular electromagnet 12 is an existing circular electromagnet. The outer diameter of the annular electromagnet 12 is the same as the outer diameter of the mounting box 11, and the inner diameter of the annular electromagnet 12 is the same as the inner diameter of the mounting box 11. The two are fixed together by screws. Specifically, the annular electromagnet 12 is fixed on the end face of the mounting box 11, and the two are coaxial. When the annular electromagnet 12 is energized, it generates magnetic force, which attracts the entire detection device 1 to the end face of the wheel axle.

[0032] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the probe moving assembly includes a moving assembly 5, an adjusting assembly 6, and a rotating assembly 7. The rotating assembly 7 is mounted on the rotating assembly mounting plate 14. The moving assembly 5 is connected to the rotating assembly 7 via a rotating connector 74. The detection probe 4 is mounted on the moving assembly 5. The moving assembly 5 can drive the detection probe 4 to move horizontally. The rotating assembly 7 can drive the moving assembly 5 and the detection probe 4 to rotate along the axis of the mounting box 11.

[0033] The rotating assembly 7 includes a motor 71, a main gear 72, and a driven gear 73. The motor 71 is fixed to the rotating assembly mounting plate 14 with screws and is offset from the center of the rotating assembly mounting plate 14. The main gear 72 is fixed to the main shaft of the motor 71 with a pin. The main gear 72 meshes with the driven gear 73, and the center of the driven gear 73 is coaxial with the center of the rotating assembly mounting plate 14.

[0034] To facilitate connection between the gear 73 and the moving assembly 5, a rotating connector 74 and a probe mounting plate 15 are installed inside the mounting box 11. The rotating connector 74 can be a bearing or other structure that can perform the same function as a bearing. In this embodiment, the rotating connector 74 includes an outer ring and five inner wheels. The outer ring is fixed inside the mounting box 11 with screws, and the inner wheels fit against the inner side of the outer ring. A triangular track with a cross-section protrudes from the inner side of the outer ring to cooperate with the inner wheels. The inner wheels cooperate with the track. The five inner wheels are evenly installed on the probe mounting plate 15 with screws. Furthermore, the gear 73 is connected to the lower surface of the probe mounting plate 15 with screws. This arrangement allows the rotating assembly 7 to drive the probe mounting plate 15 to rotate when it rotates. At the same time, the design of the inner wheels and outer ring of the rotating connector 74 also avoids radial wobble between the inner wheels and the outer ring during rotation, ensuring the stability of the detection probe 4 during the rotation detection process.

[0035] The moving component 5 includes a slide rail 51 and two sliders 52. The slide rail 51 is mounted on the upper surface of the probe mounting plate 15 with screws. The sliders 52 cooperate with the slide rail 51. In order to facilitate the installation of the detection probe 4, a rectangular block is fixed on the slider 52 with screws. This rectangular block is named the probe mounting block 53. The detection probe 4 is connected to the probe mounting block 53.

[0036] To enable the detection probe 4 to be applicable to uneven or uneven detection surfaces, and to ensure that the detection probe 4 maintains a reasonable and stable coupling layer distance with the detection surface to guarantee the detection effect, a two-section guide stroke hole 45 is provided on the outer shell of the detection probe 4. That is, the inner diameter of the upper end of the guide stroke hole 45 is larger than the inner diameter of the lower end. A guide screw 44 is inserted into the guide stroke hole 45. The guide screw 44 passes through the guide stroke hole 45 and is screwed to the probe mounting block 53. The detection probe 4 can move up and down along the guide screw 44.

[0037] In order to enable the detection probe 4 to move up and down adaptively along the guide screw 44, a compression spring 43 is fitted at the lower end of the guide screw 44. One end of the compression spring 43 contacts the lower end of the detection probe 4, and the other end contacts the upper end of the probe mounting block 53. When the detection probe 4 is squeezed, the detection probe 4 moves down along the guide screw 44, and at this time the compression spring 43 is compressed.

[0038] Four guide screws 44 and compression springs 43 are provided on the detection probe 4, and are located at the four corners of the detection probe 4 respectively.

[0039] Two detection probes 4 are provided. In this embodiment, one is preferably an existing phased array probe and the other is a conventional ultrasonic probe. The ultrasonic waves emitted by the two detection probes 4 have different angles and directions, which can form angular complementarity, making the detection more comprehensive and preventing missed detections.

[0040] During testing, to prevent the surface of the probe 4 from contacting the testing surface and causing wear, thus affecting its service life, two rectangular ball bearing plates 42 are installed on the upper surface of the probe 4 using screws. The ball bearing plates 42 are plates with multiple balls on their surface, and the height of the balls is higher than the surface of the probe 4. In this way, when in contact with the testing surface, the balls can rotate freely, while the surface of the probe 4 does not contact the testing surface, thus avoiding wear on the probe 4 and improving its service life.

[0041] To facilitate stable contact between the detection device 1 and the wheel axle and stable rotation of the detection probe 4, an inverted "U"-shaped positioning shaft mounting seat 31 is installed in the center of the upper surface of the probe mounting plate 15 using screws.

[0042] A mounting hole is provided on the positioning shaft mounting base 31, and the positioning shaft 3 is mounted at the mounting hole through a bearing. The positioning shaft 3 can rotate relative to the positioning shaft mounting base 31 along the bearing.

[0043] like Figure 3 , Figure 4 and Figure 5 As shown, the positioning shaft 3 is a metal cone. A pipe for the flow of coupling fluid is provided in the middle of the positioning shaft 3. At the same time, multiple spray holes 32 connected to the pipe are provided on the cone surface of the positioning shaft 3. The positioning shaft 3 is connected to the external liquid supply pipe through the existing rotary liquid supply joint. The liquid supply pipe supplies coupling fluid into the positioning shaft 3, and the coupling fluid is sprayed out through the spray holes 32.

[0044] To facilitate the wiring of the liquid supply tube and the wires on the detection probe 4, the components installed in the mounting box 11 are all made to give way to them. This is a conventional technical solution and is known to those skilled in the art.

[0045] To facilitate the removal of air between the detection probe 4 and the axle surface, enabling ultrasonic waves to efficiently penetrate the workpiece, a sealing cover 13 is installed on the detection probe 4. The sealing cover 13 is connected to the detection probe 4 via a telescopic sealing structure 41. A ring-shaped sealing ring, named the ring-shaped sealing ring 16, is also fixed to the upper surface of the sealing cover 13. The ring-shaped sealing ring 16 is made of rubber. The ring-shaped sealing ring 16, the sealing cover 13, and the detection surface form a coupling fluid cavity. During detection, this arrangement ensures that the coupling fluid fills the coupling fluid cavity, providing a good foundation for the stability and accuracy of the detection.

[0046] The sealing cover 13 is a circular plastic cover. The outer diameter of the sealing cover 13 is slightly smaller than the inner diameter of the annular electromagnet 12. The sealing cover 13 is fixedly connected to the probe mounting plate 15 with screws. Two rectangular probe mounting ports 17 and a circular through hole are opened on the upper surface of the sealing cover 13. The detection probe 4 passes through the probe mounting port 17, the positioning shaft 3 passes through the circular through hole, and the spray hole 32 extends beyond the upper surface of the sealing cover 13. The size of the probe mounting port 17 is larger than the size of the detection probe 4. The probe mounting port 17 provides space for the detection probe 4 to move left and right.

[0047] To ensure airtightness and prevent coupling fluid from entering the mounting box 11, a sealing treatment is applied at the connection between the positioning shaft 3 and the sealing cover 13. At the same time, the telescopic sealing structure 41 is used to connect the probe mounting port 17 and the detection probe 4.

[0048] The telescopic sealing structure 41 can be a "belt cover" type telescopic structure made of elastic material or ordinary material, or a combination of the two. This embodiment preferably adopts a telescopic structure that combines the two methods.

[0049] The telescopic sealing structure 41 includes four rubber telescopic pieces 46 and a rectangular connecting skirt 47 connected to one end of each telescopic piece 46. The telescopic pieces 46 are corrugated thin sheets of rubber. The four telescopic pieces 46 are connected to each other in pairs to form a pyramid shape. One end of each telescopic piece 46 is fixedly connected to the side wall of the probe mounting port 17, and the other end is connected to the connecting skirt 47. The connecting skirt 47 is a rectangular ring made of rubber. The connecting skirt 47 can be connected to the surface of the detection probe 4 with screws, and a sealing treatment is applied at the connection. In this way, the detection probe 4 can move up, down, left, and right under the telescopic sealing structure 41 without causing coupling fluid to enter the mounting box 11.

[0050] When the annular sealing ring 16, the sealing cover 13 and the detection surface form a coupling liquid cavity, the annular sealing ring 16 is slightly higher than the upper surface of the annular electromagnet 12, and the upper surface of the annular sealing ring 16 exceeds the spray hole 32.

[0051] like Figure 6As shown, in order to achieve multi-stroke detection and facilitate adjustment of the distance between the two detection probes 4, an adjustment component 6 is also installed on the probe mounting plate 15.

[0052] The adjustment assembly 6 includes a worm gear mechanism 61, a rack and pinion mechanism 62, a mounting plate 63, and an adjustment shaft 64. The rack in the rack and pinion mechanism 62 is fixed to the probe mounting block 53 with screws. The worm in the worm gear mechanism 61 is mounted on the upper surface of the probe mounting plate 15 via the mounting shaft. The worm gear and worm cooperate, and the worm gear and gear are coaxially and fixedly connected. Rotating the mounting shaft drives the worm to rotate, which in turn drives the rack to move through the transmission of the worm gear and gear, thereby adjusting the position of the detection probe 4. To better display the distance the detection probe 4 has moved, this embodiment preferably prints a scale on the sealing cover 13 to display the distance the detection probe 4 has moved, making it convenient to use.

[0053] Mounting plate 63 is an "L" shaped metal plate. The worm gear is hinged to mounting plate 63. Mounting plate 63 is fixed to probe mounting plate 15 by screws.

[0054] To facilitate the rotation of the mounting shaft connected to the worm gear, a circular adjusting shaft 64 is inserted into the mounting shaft. One end of the adjusting shaft 64 passes through the sealing cover 13 and is inserted into the mounting shaft. An internal hexagonal hole is provided at the upper end of the adjusting shaft 64, which can be rotated by using an internal hexagonal wrench. To ensure sealing, the adjusting shaft 64 is connected to the sealing cover 13 through a bearing, and the contact point is sealed to ensure that the adjusting shaft 64 can rotate relative to the sealing cover 13, while also ensuring that the coupling fluid will not enter the mounting box 11 through the adjusting shaft 64.

[0055] There are two sets of adjustment components 6, and each set of adjustment components 6 is connected to a detection probe 4.

[0056] like Figure 1 and Figure 10 As shown, the detection gripper 2 includes a gripper piece 21, a movable gripper bar 22, a fixed gripper bar 23, and a servo drive component 24.

[0057] The claw 21 is an "L"-shaped metal piece. The two claws 21 are connected to the servo drive 24 respectively. The distance between the two claws 21 can be adjusted by the servo drive 24 to realize the gripping and releasing functions (adjusting the distance between the claws by the servo drive is existing technology).

[0058] The movable clamping bar 22 is a rectangular rubber sheet. The movable clamping bar 22 is installed on the claw plate 21 by screws. A rectangular limiting groove 25 is recessed in the clamping surface of the movable clamping bar 22.

[0059] The fixing clip 23 is a rectangular rubber sheet. The fixing clip 23 is fixed to the outer wall of the mounting box 11 with screws. A rectangular limiting block 26 protrudes from the fixing clip 23. The fixing clip 23 and the movable clip 22 can cooperate through the limiting block 26 and the limiting groove 25 to improve the stability of clamping.

[0060] The usage process of this embodiment is as follows: When in use, first align the positioning shaft 3 with the positioning hole on the detection surface, and then energize the annular electromagnet 12. At this time, the detection device 1 is attracted to the detection surface. During this process, the ball plate 42 on the detection probe 4 first contacts the detection surface, and the detection probe 4 retracts accordingly. At this time, the annular sealing ring 16, the sealing cover 13 and the detection surface form a coupling liquid cavity. The coupling liquid is injected into the coupling liquid cavity through the spray hole 32 until the coupling liquid cavity is full of coupling liquid. At this time, the detection can be performed. When multi-angle detection is required, the rotating component 7 is activated, driving the detection probe 4 to rotate around the positioning axis 3 to achieve multi-angle rotation. When it is necessary to adjust the position of the detection probe 4, the adjustment shaft 64 is rotated using an Allen wrench. At this time, the worm gear mechanism 61 and the gear and rack mechanism 62 move to adjust the position of the detection probe 4.

[0061] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A solid axle flaw detection apparatus comprising a robotic arm, characterized by: It also includes a detection device (1) and a detection gripper (2). The detection gripper (2) is mounted on the robotic arm and can move to grip the detection device (1). The testing device (1) includes a mounting box (11), a ring electromagnet (12), a sealing cover (13), a positioning shaft (3), a testing probe (4), and a probe moving assembly. The ring electromagnet (12) is located at one end of the mounting box (11). The testing device (1) is attracted to the testing surface by the ring electromagnet (12). The probe moving assembly is located inside the mounting box (11) and connected to the testing probe (4). There are two testing probes (4). The probe moving assembly drives the two testing probes (4) to rotate along the axis of the mounting box (11). The probe moving assembly includes an adjustment assembly (6), which is connected to two detection probes (4) respectively. The positions of the two detection probes (4) are adjusted individually by the adjustment assembly (6). The sealing cover (13) is located at the end of the annular electromagnet (12) and is connected to the detection probe (4) through the telescopic sealing structure (41). The telescopic sealing structure (41) moves with the detection probe (4) to ensure the sealing effect of the sealing cover (13). The positioning shaft (3) is located in the middle of the sealing cover (13) and a spray hole (32) for spraying coupling fluid during flaw detection is opened on the positioning shaft (3).

2. The solid axle inspection apparatus of claim 1, wherein: The probe moving assembly includes a moving assembly (5) and a rotating assembly (7), which are connected. The rotating assembly (7) drives the moving assembly (5) to rotate.

3. The solid axle inspection apparatus of claim 2, wherein: The moving component (5) includes a slide rail (51) and a slider (52), and the detection probe (4) is mounted on the slider (52) via a probe mounting block (53); The rotating assembly (7) includes a motor (71), a main gear (72), a driven gear (73), and a rotating connector (74). The main gear (72) is mounted on the motor (71), the driven gear (73) meshes with the main gear (72), and the driven gear (73) and the rotating connector (74) are respectively connected to the moving assembly (5).

4. The solid axle inspection apparatus of claim 3, wherein: The detection probe (4) is provided with a guide stroke hole (45), a compression spring (43) and a guide screw (44). The guide screw (44) is inserted into the guide stroke hole (45) and connected to the probe mounting block (53). The compression spring (43) is sleeved on the outside of the guide screw (44). The distance between the detection probe (4) and the probe mounting block (53) changes dynamically along the guide screw (44) under the action of the compression spring (43).

5. The solid axle inspection apparatus of claim 1, wherein: The adjustment assembly (6) includes a worm gear mechanism (61), a gear and rack mechanism (62), and an adjustment shaft (64). In the gear and rack mechanism (62), the rack is mounted on the probe mounting block (53) on the detection probe (4). In the worm gear mechanism (61), the worm is coaxially connected to the gear in the gear and rack mechanism (62). The adjustment shaft (64) passes through the sealing cover (13) and is connected to the worm in the worm gear mechanism (61).

6. The solid axle flaw detection apparatus of claim 1, wherein: The telescopic sealing structure (41) includes a telescopic sheet (46) and a connecting skirt (47). The telescopic sheet (46) connects the sealing cover (13) and the connecting skirt (47). The connecting skirt (47) is connected to the detection probe (4).

7. The solid axle flaw detection apparatus of claim 1, wherein: A ball plate (42) with balls is provided on the detection probe (4), and the balls in the ball plate (42) are higher than the surface of the detection probe (4).

8. The solid axle inspection apparatus of claim 1, wherein: An annular sealing ring (16) is provided on the sealing cover (13). The annular sealing ring (16), the sealing cover (13) and the detection surface form a coupling liquid cavity, and the end face of the annular sealing ring (16) is higher than the spray hole (32) on the positioning shaft (3).

9. The solid axle flaw detection apparatus of claim 1, wherein: The detection gripper (2) includes two grippers (21), a movable gripper (22), a fixed gripper (23), and a servo drive (24). The two grippers (21) are connected to the servo drive (24), and the servo drive (24) adjusts the distance between the two grippers (21). The movable gripper (22) is set on the gripper (21), and the fixed gripper (23) is set on the mounting box (11). The movable gripper (22) and the fixed gripper (23) are detachably engaged through a slot.

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