Self-adaptive vehicle-mounted nondestructive testing system and method

Abstract

The invention discloses a self-adaptive vehicle-mounted nondestructive testing system and a self-adaptive vehicle-mounted nondestructive testing method, belongs to the technical field of nondestructive testing, and is used for solving the technical problem that a rotating body of a vehicle-mounted vertical nondestructive testing system needs a rapid balance adjustment function and higher balance compensation capability. The vehicle-mounted nondestructive testing system comprises a moving unit, a detecting unit and a channel unit, the channel unit is communicated with the detecting unit, the detecting unit is fixed on the moving unit, the detecting unit comprises a vertical rotating body, a driving mechanism and a rotating balance mechanism, and the rotating balance mechanism is used for balancing eccentric torque when the vertical rotating body rotates. According to the self-adaptive vehicle-mounted nondestructive testing system and method disclosed by the invention, the vertical rotating body can realize self-adaptive rotating balance, so that the scanning precision is improved, and the quality and the service life of key parts of a product are ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of non-destructive testing, and relates to an adaptive vehicle-mounted non-destructive testing system and method. Background Art

[0002] In industrial nondestructive testing systems, vertical nondestructive testing systems are widely used because their radiation sources and detectors are integrated into a vertical rotating structure, enabling multi-angle tomographic scanning of workpieces through 360-degree continuous rotation. Due to certain restrictions, some workpieces need to be inspected outdoors, often requiring the use of vehicle-mounted vertical nondestructive testing systems.

[0003] Since the center of mass and the center of rotation of the rotating body of a vertical nondestructive testing system often deviate, imbalance will occur during rotational scanning, which will affect the rotation accuracy, reduce the system's performance stability and image quality, and ultimately lead to a decrease in the reliability of the inspection results of the workpiece to be tested. In particular, vehicle-mounted vertical nondestructive testing systems require greater portability and rapid deployment, and are often moved frequently to different locations, resulting in different support conditions each time. Therefore, they need to have a fast balance calibration function; in addition, since the vertical nondestructive testing system is fixed on the vehicle, the rotating body requires a higher balance compensation capability when rotating at high speed. The current method of adjusting the balance by loading counterweights is extremely labor-intensive and has a long adjustment cycle, which cannot meet the use requirements of vehicle-mounted vertical nondestructive testing systems. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide an adaptive vehicle-mounted non-destructive testing system and method to solve the technical problem that the rotating body of the vehicle-mounted vertical non-destructive testing system requires a rapid balance adjustment function and a higher balance compensation capability.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions.

[0006] A first aspect of the present invention provides an adaptive vehicle-mounted nondestructive testing system, comprising a mobile unit, a detection unit and a channel unit; the channel unit is connected to the detection unit, and the detection unit is fixed on the mobile unit; the detection unit comprises a vertical rotating body and a driving mechanism, the vertical rotating body comprises a scanning assembly, and the driving mechanism can drive the scanning assembly to perform nondestructive testing around the workpiece to be tested.

[0007] Furthermore, the vertical rotating body also includes a rotating gear disc, the scanning assembly is fixedly connected to the rotating gear disc, and the driving mechanism includes a driving motor, which drives the rotating gear disc to rotate the scanning assembly.

[0008] Furthermore, the detection unit also includes a rotation balancing mechanism, which is arranged directly below the rotating gear disc and is used to balance the eccentric torque when the vertical rotating body rotates.

[0009] Furthermore, the rotation balancing mechanism includes a first mounting seat and a second mounting seat, and the first mounting seat and the second mounting seat are slidably connected.

[0010] Furthermore, the rotation balancing mechanism further includes a guide member, and the first mounting seat slides up and down relative to the second mounting seat via the guide member.

[0011] Furthermore, the rotation balancing mechanism also includes a compression spring, which is arranged vertically and has two ends connected to the first mounting seat and the second mounting seat respectively.

[0012] Furthermore, the channel unit includes a first channel and a second channel, and the first channel and the second channel are respectively connected to two ends of the detection unit.

[0013] Furthermore, the rotation balancing mechanism also includes an eccentric gear, which is meshed with the rotating gear disc.

[0014] Furthermore, the eccentric gear is mounted on the first mounting seat through a bearing. When the eccentric gear rotates, the first mounting seat can slide up and down periodically on the second mounting seat, thereby causing the first mounting seat to periodically compress the compression spring.

[0015] Furthermore, the rotation balancing mechanism also includes an adjusting member, which includes a retaining ring, and the bottom end of the compression spring abuts against one side of the retaining ring.

[0016] Furthermore, the adjusting member also includes a screw, which is located on the other side of the retaining ring and is threadedly connected to the second mounting seat.

[0017] Another aspect of the present invention discloses a vehicle-mounted nondestructive testing method, which uses any vehicle-mounted nondestructive testing system according to the first aspect of the present invention, comprising the following steps:

[0018] Step S100: Start the moving unit to move the vehicle-mounted nondestructive testing system to the position to be tested;

[0019] Step S200 detects the position of the rotating body mass center G of the detection unit and sets the mass center position mark M according to the detection result;

[0020] Step S300: assembling the rotation balancing mechanism according to the position of the mass center position mark M;

[0021] Step S400: placing the workpiece to be tested in the channel unit;

[0022] Step S500: The detection unit performs scanning detection on the workpiece to be detected;

[0023] At step S600 , the scanning is completed, the nondestructive testing system is turned off, and the workpiece is removed from the channel unit.

[0024] Furthermore, the driving mechanism includes a driving motor, and step S200 determines the position of the center of mass G of the rotating body by monitoring the current value of the driving motor.

[0025] Furthermore, step S200 includes the following sub-steps:

[0026] S210 sets a zero angle mark M0 on the rotating body with the rotation center C of the rotating body as the center of the circle, and takes the initial position of the zero angle mark MO as the zero angle position of the vertical rotating body;

[0027] S220 starts the driving motor to rotate the vertical rotating body and monitors the current value of the driving motor;

[0028] S230 draws a current / angle curve of the driving motor to determine the mass center angle A where the mass center G of the rotating body is located;

[0029] S240 sets a mass center position mark M at the position of the mass center angle A on the rotating body according to the zero angle mark M0.

[0030] Furthermore, the assembly process of step S300 includes the following sub-steps:

[0031] S310: rotating the vertical rotating body so that the vertical rotating body stops at a position where the center of mass position mark M rotates downward and the line connecting the center of rotation C is horizontal;

[0032] The S320 assembles the rotary balancing mechanism directly below the vertical rotating body, so that the distal end of the eccentric gear meshes with the rotating toothed disc;

[0033] S330 detects the current value of the driving motor, and when the current value amplitude is greater than a preset threshold value, rotates the adjustment member to increase the preload of the compression spring.

[0034] Furthermore, step S500 includes the following sub-steps:

[0035] S510 workpiece conveyor moves the workpiece to be tested from the first channel to the second channel;

[0036] The S520 vertical swivel body rotates and achieves adaptive balance;

[0037] The S530 scanning component scans the workpiece to be measured to obtain a three-dimensional scanning image;

[0038] Wherein, sub-step S520 includes the following sub-steps:

[0039] The S521 eccentric gear moves up and down during rotation, causing the compression spring to be repeatedly compressed and extended;

[0040] The compression spring S522 applies an upward radial reaction force F1 to the eccentric gear according to the amount of compression;

[0041] S523 The eccentric gear transmits the radial reaction force F1 to the rotating gear plate through meshing, and part of the radial reaction force F1 is decomposed into a tangential rotational resistance F2 on the rotating gear plate, causing the rotating gear plate to be subjected to a rotational resistance torque;

[0042] S524 When the center of mass position mark M of the rotating body rotates downward and the line connecting it with the center of rotation C is horizontal, the eccentric gear and the distal end of the rotating toothed disc are engaged with the eccentric gear, and the compression amount of the compression spring is the largest, so that the rotating toothed disc is subjected to the maximum rotational resistance torque to balance the maximum eccentric torque borne by the vertical rotating body.

[0043] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0044] 1. The vehicle-mounted nondestructive testing system of the present invention, by providing a rotational balancing mechanism comprising an eccentric gear and a compression spring, can generate an adaptive resistance torque against the eccentric torque of the vertical rotating body, thereby achieving adaptive rotational balance of the vertical rotating body of the testing unit. This improves the balance compensation capability of the vehicle-mounted nondestructive testing system, enhances the scanning detection accuracy, and ensures the quality and service life of key product components.

[0045] 2. The vehicle-mounted nondestructive testing system of the present invention, by providing a guide unit in the rotation balancing mechanism, can make the periodic up and down movement of the eccentric gear more stable and smooth, thereby ensuring the adaptive balancing effect of the rotation balancing mechanism on the vertical rotating body.

[0046] 3. The vehicle-mounted nondestructive testing method of the present invention, through steps S200 and S300, significantly reduces the time and resources occupied when adjusting the balance of the vertical rotating body, realizes rapid balance calibration and precise assembly of the vehicle-mounted nondestructive testing system, and meets the requirements for rapid deployment of the vehicle-mounted nondestructive testing system.

[0047] 4. The vehicle-mounted nondestructive testing method of the present invention, in step S400, decomposes the radial reaction force acting on the rotating toothed disc by the eccentric gear into a tangential rotational resistance to the rotating toothed disc, thereby achieving adaptive balance of the vertical rotating body during the rotation process, improving the stability and inspection image quality of the vehicle-mounted nondestructive testing system, enhancing the scanning inspection accuracy, and ensuring the quality and service life of key product components.

[0048] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the embodiments of the description and the contents particularly pointed out in the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Schematic diagram of the overall structure of the adaptive vehicle-mounted non-destructive testing system according to Example 1 of the present invention;

[0050] Figure 2 Schematic diagram of the internal structure of the detection unit of Example 1 of the present invention;

[0051] Figure 3 Schematic diagram of the structure of the rotation balancing mechanism according to an embodiment of the present invention;

[0052] Figure 4 Schematic diagram of the cross-sectional structure of the rotation balancing mechanism according to an embodiment of the present invention;

[0053] Figure 5 Schematic diagram of the adaptive balancing principle of the rotation balancing mechanism according to an embodiment of the present invention;

[0054] Figure 6 Schematic diagram of the steps of the adaptive vehicle-mounted non-destructive testing method according to embodiment 2 of the present invention;

[0055] Figure 7 Schematic diagram of a current-angle curve of a motor in step S200 of embodiment 2 of the present invention;

[0056] Figure 8 This is a schematic diagram of sub-steps S520 of embodiment 2 of the present invention.

[0057] Reference numerals:

[0058] 1- mobile unit;

[0059] 2-Detection unit;

[0060] 21- vertical rotating body; 211- scanning component; 212- rotating gear disc;

[0061] 22- driving mechanism;

[0062] 221-driving motor; 222-driving gear;

[0063] 23-rotational balancing mechanism; 231-eccentric gear; 2311-gear spindle; 232-compression spring; 233-guide member; 2331-guide rail; 2332-slider; 234-first mounting seat; 2341-mounting plate; 2342-bearing; 2343-sleeve; 2344-spacer sleeve; 2345-extrusion limiter; 235-second mounting seat; 2351-spring seat; 236-adjusting member; 2361-limiting block;

[0064] 2362- retaining ring; 2363- screw;

[0065] 24-support assembly;

[0066] 3-channel unit; 31-first channel; 32-second channel;

[0067] A-center of mass angle; C-center of rotation; F1-radial reaction force; F2-tangential rotation resistance; G-center of mass of rotating body; L-center line; M0-zero angle mark; M-center of mass position mark. DETAILED DESCRIPTION

[0068] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0069] Example 1

[0070] This embodiment discloses an adaptive vehicle-mounted nondestructive testing system that can perform accurate nondestructive testing on workpieces under indoor and outdoor conditions, such as Figure 1 As shown, the vehicle-mounted non-destructive testing system of this embodiment includes a mobile unit 1 , a testing unit 2 and a channel unit 3 .

[0071] The mobile unit 1 includes a carrying vehicle for carrying and transporting the detection unit 2 and the channel unit 3. The type and model of the carrying vehicle can be selected according to the detection site, the weight and size of the detection unit.

[0072] like Figure 2 As shown, the detection unit 2 is fixedly mounted on the carrying platform of the carrying vehicle, and includes a vertical rotating body 21, a driving mechanism 22, a rotating balancing mechanism 23 and a supporting assembly 24; the supporting assembly 24 includes a workpiece supporting platform and a supporting frame, the driving mechanism 22 is mounted on the supporting frame, the vertical rotating body 21 includes a scanning assembly 211 and a rotating gear disk 212, and the driving mechanism 22 can drive the vertical rotating body 21 to rotate around the workpiece to be measured on the workpiece supporting platform to complete non-destructive scanning detection of the workpiece to be measured.

[0073] Scanning assembly 211 includes a high-energy X-ray source and detector, a linear accelerator, a modulator (PU), and other components. The high-energy X-ray source emits X-rays, while the detector detects the transmitted X-rays to obtain measurement data. The linear accelerator uses an electromagnetic field to accelerate charged particles to a speed close to the speed of light, generating X-rays upon impact. Compared to conventional X-ray detectors, the generated X-rays are both high-energy and high-intensity. Industrial CT electron linear accelerators offer high energy, high dose rates, high stability, and a compact size. The modulator (PU) is used to modulate and demodulate signals. The scanning assembly 211 of the present invention can utilize the scanning assembly of existing industrial spiral CT equipment, and its structural principles and operating performance are not described in detail here.

[0074] The driving mechanism 22 is as follows Figure 2 As shown, the drive mechanism 22 includes a drive motor 221 and a drive gear 222. The drive motor 221 is mounted on the support frame and is used to control the rotation of the drive gear 222. The drive gear 222 engages with the rotating gear disc 212, allowing the drive motor 221 to control the rotation of the rotating gear disc 212 through the drive gear 222. The rotating gear disc 212 then drives the scanning assembly 211 to rotate around the periphery of the workpiece to be tested, achieving three-dimensional non-destructive testing of the workpiece to be tested. The rotating gear disc 212 is an annular gear disc, and the interior of the annular gear disc is a scanning channel for accommodating the workpiece support platform and the workpiece to be tested.

[0075] The center of mass and center of rotation of the vertical rotating body 21 in the detection unit 2 often deviate, resulting in imbalance during rotational scanning. This affects rotational accuracy, reduces system performance stability and image quality, and ultimately leads to a decrease in the reliability of the inspection results for the workpiece. To this end, this embodiment provides a rotational balancing mechanism 23 to achieve rotational balance on the vertical rotating body 21, improving scanning accuracy and ensuring the quality and service life of key product components. It also significantly reduces the time and resources required to adjust the balance of the vertical rotating body 21, significantly improving production efficiency.

[0076] The rotation balancing mechanism 23 is arranged directly below the rotating gear disc 212. Figure 3 and Figure 4As shown, it includes an eccentric gear 231, a compression spring 232, a guide 233, a first mounting seat 234, and a second mounting seat 235. The eccentric gear 231 is mounted on the first mounting seat 234, and the first mounting seat 234 is slidably connected to the second mounting seat 235 via the guide 233, so that when the eccentric gear 231 rotates, the first mounting seat 234 can slide in the vertical direction on the second mounting seat 235; the upper end of the compression spring 232 is arranged below the first mounting seat 234. When the eccentric gear 231 rotates, the compression spring 232 can apply force to the eccentric gear 231, so that the eccentric gear 231 generates an adaptive resistance torque on the vertical rotating body 21 when an eccentric torque exists on the vertical rotating body 21.

[0077] like Figure 4 and Figure 5 As shown, the eccentric gear 231 meshes with the rotating toothed disc 212, with the center line L connecting the eccentric gear 231 and the rotating toothed disc 212 being arranged vertically. The gear ratio between the rotating toothed disc 212 and the eccentric gear 231 must be an integer to ensure that the number of rotations of the eccentric gear 231 is an integer multiple of the number of rotations of the rotating toothed disc 212. The eccentric gear 231 includes a gear spindle 2311, which is rotatably mounted on the first mounting base 234 via the gear spindle 2311.

[0078] A preferred solution of this embodiment is as follows Figure 4 As shown, the compression spring 232 is vertically arranged below the gear core shaft 2311, and its two ends are respectively mounted on the first mounting seat 234 and the second mounting seat 235.

[0079] like Figure 3 As shown, the guide member 233 is arranged vertically and is used to guide the movement of the eccentric gear 231 along the centerline L. The guide member 233 includes a guide rail 2331 and a slider 2332. The guide rail 2331 is fixed to the second mounting base 235. The slider 2332 is slidably connected to the guide rail 2331 on one side and fixedly connected to the mounting plate 2341 on the other side. Preferably, the guide member 233 is provided in two sets, one on each side of the gear core shaft 2311.

[0080] like Figure 4 As shown, the first mounting seat 234 includes a mounting plate 2341 , a bearing 2342 , a shaft sleeve 2343 , a spacer sleeve 2344 and an extrusion limiter 2345 .

[0081] Preferably, Figure 4 As shown, the mounting plate 2341 is a rectangular plate, the shaft sleeve 2343 is located at the center of the mounting plate 2341, the gear core shaft 2311 is passed through the shaft sleeve 2343, and the bearing 2342 is assembled between the gear core shaft 2311 and the shaft sleeve 2343, so that the eccentric gear 231 can rotate around the gear core shaft 2311 on the mounting plate 2341.

[0082] Preferably, Figure 4 As shown, there are two bearings 2342 with a spacer sleeve 2344 in the middle, and the end of the gear core shaft 2311 is threadedly engaged with two locking nuts to be locked.

[0083] like Figure 4 As shown, the extrusion limiter 2345 is located at the bottom of the mounting plate 2341 and is used to squeeze and limit the upper end of the compression spring 232. Preferably, the extrusion limiter 2345 has a T-shaped cross section and includes a horizontal block and a vertical block; the bottom of the horizontal block abuts against the upper end of the compression spring 232, causing the upper end of the compression spring 232 to be squeezed and deformed; the vertical block is cylindrical and inserted into the upper end of the compression spring 232 to limit the upper end of the compression spring 232.

[0084] like Figure 3 The second mounting seat 235 is fixedly mounted on the support frame 24 . The second mounting seat 235 includes a spring seat 2351 for limiting the bottom end of the compression spring 232 .

[0085] After the second mounting base 235 is mounted on the support frame 231, the eccentric gear 231 meshes with the rotating toothed disc 212, and the compression spring 232 is arranged vertically. When the non-destructive testing system is activated and the drive motor 221 drives the vertical rotating body 21 to rotate for scanning and testing, the rotating toothed disc 212 rotates and drives the eccentric gear 231 to rotate. As the eccentric gear 231 rotates, it periodically moves up and down under the guidance of the guide member 233, thereby causing the extrusion limiter 2345 to generate a periodically changing pressure on one end of the compression spring 232. Accordingly, the radial reaction force of the compression spring 232 on the eccentric gear 231 also periodically changes with the amount of compression of the compression spring 232.

[0086] It should be noted that if Figure 5 As shown, during installation, it is necessary to ensure that when the vertical rotating body 21 rotates to the position where the eccentric torque is maximum, the distal end of the eccentric gear 231 is meshed with the rotating toothed disc 212 .

[0087] like Figure 5 and Figure 6As shown, the rotational balancing mechanism of this embodiment, by assembling and meshing the eccentric gear 231 with the rotating toothed disc, can decompose part of the radial force between the eccentric gear 231 and the rotating toothed disc into tangential resistance, thereby generating a rotational resistance torque of the rotating toothed disc. The radial reaction force exerted by the compression spring 232 on the eccentric gear 231 also varies periodically with the amount of compression of the compression spring 232. Therefore, during the rotation of the vertical rotating body 21, not only does the position of the rotating body's center of mass G change periodically, but the rotational resistance torque exerted by the eccentric gear 231 on the vertical rotating body 21 also varies periodically. Since the tooth ratio of the rotating toothed disc 212 and the eccentric gear 231 is an integer, and the assembly condition of the present device satisfies the assembly condition that the distal end of the eccentric gear 231 is engaged with the rotating toothed disc when the center of mass G of the rotating body is located at the position where the eccentric load torque generated is the largest, thereby ensuring that each time the vertical rotating body 21 rotates to the position where the eccentric torque generated by the center of mass G of the rotating body is the largest, the rotational resistance torque exerted by the eccentric gear 231 on the rotating toothed disc 212 is the maximum value, so as to balance the maximum eccentric torque exerted on the vertical rotating body 21.

[0088] For example, Figure 5 As shown, when the center of mass G of the rotating body rotates downward and is horizontal to the line connecting the rotating center C, the eccentricity of the eccentric gear 231 is the largest, the compression amount of the compression spring 232 is the largest, the radial reaction force of the compression spring 232 on the eccentric gear 231 is the largest, the corresponding tangential component force is also the largest, and the balancing resistance torque generated by the eccentric gear 231 on the vertical rotating body 21 is also the largest; therefore, each time the center of mass G of the rotating body approaches Figure 5 When the vertical rotating body 21 is in the neutral position, the gravitational torque of the vertical rotating body 21 is most likely to be greater than the friction torque within the vertical rotating body 21, generating an eccentric torque. According to the arrangement of this device, since the tooth ratio between the rotating toothed disc 212 and the eccentric gear 231 is an integer, the rotational resistance exerted by the eccentric gear 231 on the rotating toothed disc 212 at this time is always at its maximum value, and increases and decreases synchronously with the increase or decrease of the eccentric torque. This achieves the beneficial effect of adaptively adjusting the rotational balance of the vertical rotating body 21, improving scanning accuracy, and ensuring the quality and service life of key product components. On the other hand, due to the backlash between the drive gear 222 and the rotating toothed disc 212 and the rotational inertia of the rotating toothed disc 212, the rotating toothed disc 212 is prone to overshoot, resulting in a loss of rotational precision. The balancing resistance torque exerted by the eccentric gear 231 on the vertical rotating body 21 in this embodiment can offset the rotational inertia of the rotating toothed disc 212, preventing overshoot and further achieving adaptive balance of the vertical rotating body 21 during 360° rotation.

[0089] like Figure 1As shown, the channel unit 3 includes a first channel 31 and a second channel 32, which are respectively installed at the two ends of the detection unit 2 and are both connected to the rotation scanning channel of the vertical rotating body 21. Workpiece conveyor belts are provided in the first channel 31 and the second channel 32, and the two workpiece conveyor belts are adjacent to the two ends of the workpiece support platform to drive the workpiece to be measured to move horizontally in the detection unit 2, thereby completing the overall three-dimensional scanning detection of the workpiece to be measured by the scanning component 211.

[0090] Exemplarily, a shielding door is provided at the end of the first channel 31 for loading and unloading workpieces to be measured; the end of the second channel is closed.

[0091] Example 2

[0092] The adaptive vehicle-mounted nondestructive testing system of this embodiment differs from that of Embodiment 1 in that the rotation balancing mechanism 23 further includes an adjusting member 236 , which is used to adjust the base value of the radial reaction force of the compression spring 232 acting on the eccentric gear 231 .

[0093] like Figure 3 and Figure 4 As shown, the adjusting member 236 includes a limit block 2361 , a retaining ring 2362 and a screw 2363 , and the adjusting member 236 is threadedly connected to the spring seat 2351 .

[0094] like Figure 4 As shown, a stop block 2361 and a screw rod 2363 are located at either end of the adjusting member 236, respectively, with a retaining ring 2362 located between the stop block 2361 and the screw rod 2363. A screw hole is defined on the spring seat 2351 to mate with the screw rod 2363. The stop block 2361 is positioned opposite the extrusion stop member 2345, so that the bottom end of the compression spring 232 is positioned around the outer periphery of the stop block 2361 and rests on the retaining ring 2362, thereby ensuring the expansion and contraction direction of the compression spring 232.

[0095] Since the eccentric torques of different vertical rotating bodies 21 are of different sizes and will change during use, in order to make the balancing resistance torque of the eccentric gear 231 on the vertical rotating body 21 relatively balanced with the eccentric torque of the vertical rotating body 21, by rotating the screw 2363, the retaining ring 2362 moves upward on the spring seat 2351, and the retaining ring 2362 will squeeze the compression spring 232, thereby increasing the base value of the radial reaction force of the compression spring 232 on the eccentric gear 231, so as to ensure that the balancing resistance torque of the eccentric gear 231 on the vertical rotating body 21 is relatively balanced with the eccentric torque of the vertical rotating body 21.

[0096] In this embodiment, by providing the adjustment member 236 , there is no need to replace the compression spring 232 with different rigidities, so that the detection unit has better flexibility and adaptability.

[0097] Example 3

[0098] This embodiment discloses an adaptive vehicle-mounted nondestructive testing method, which adopts the adaptive vehicle-mounted nondestructive testing system of embodiment 1 or embodiment 2.

[0099] like Figure 6 As shown, the nondestructive testing method of this embodiment includes the following steps:

[0100] Step S100: Start the moving unit to move the nondestructive testing device to the position to be tested;

[0101] Step S200 detects the position of the rotating body's center of mass G, and sets a center of mass position mark M at the position of the rotating body's center of mass G according to the detection result;

[0102] Step S300: assemble the rotation balancing mechanism 23 according to the position of the mass center position mark M;

[0103] Step S400: Place the workpiece to be tested in the channel unit 3 and start the non-destructive testing system;

[0104] Step S500: The scanning component 211 performs scanning detection on the workpiece to be detected;

[0105] After the scanning is completed in step S600 , the nondestructive testing system is turned off and the workpiece to be tested is taken out from the first channel 31 .

[0106] The nondestructive testing method of this embodiment, by installing a rotational balancing mechanism 23, enables the vertical rotating body 21 to achieve adaptive balance during the rotation process, thereby improving the performance stability of the nondestructive testing device. At the same time, it also greatly reduces the time and resources occupied when adjusting the balance of the vertical rotating body 21, significantly improving production efficiency.

[0107] Furthermore, step S200 includes the following sub-steps:

[0108] S210 sets a zero angle mark M0 on the rotating gear disc 212 with the rotation center C of the rotating gear disc 212 as the center of the circle, and takes the initial position of the zero angle mark MO as the zero angle position of the vertical rotating body 21;

[0109] S220 starts the driving motor 221 to rotate the vertical rotating body 21 and monitors the current value of the driving motor 221;

[0110] S230 draws a current-angle curve of the driving motor 221 to determine the mass center angle A of the rotating body mass center G;

[0111] S240 sets a mass center position mark M at the mass center angle A on the rotating gear disc 212 according to the zero angle mark M0.

[0112] The method for determining the mass center angle A of the mass center G of the vertical rotating body 21 in sub-step S230 is as follows:

[0113] like Figure 5 and Figure 7 As shown, since the rotation of the vertical rotating body 21 is driven by the driving motor 221 to drive the driving gear 222, and then the driving gear 222 drives the rotating gear plate 212 to rotate, and for the driving motor 221, the vertical rotating body 21 is a load, if the rotating body mass center G coincides with the rotation center C, the current value of the driving motor 221 is constant; if the rotating body mass center G deviates from the rotation center C, such as Figure 8 As shown, during the rotation process, the current of the driving motor 221 will generate different current magnitudes when the rotating body mass center G rotates to different angular directions. The rotation center C of the vertical rotating body 21 of this embodiment is the wheel center of the rotating gear disc 212.

[0114] Taking the clockwise rotation of the vertical rotating body 21 as an example, in sub-step S210, a zero angle mark M0 is set at the three o'clock position on the rotating gear disc 212. When the rotating body mass center G rotates to a horizontal position with the rotation center C and the rotating body mass center G rotates upward, the current of the driving motor 221 is the largest; when the rotating body mass center G rotates to a horizontal position with the rotation center C and the rotating body mass center G rotates downward, the current of the driving motor 221 is the smallest. Therefore, after completing sub-step S220, the following is obtained in sub-step S230. Figure 8 In the current-angle curve (partial curve) shown, the angle corresponding to the minimum current value in the current-angle curve is the center of mass angle A of the rotating body's center of mass G. Finally, based on the zero angle mark M0 marked in substep S210, a center of mass position mark M is set counterclockwise at the location of the center of mass angle A on the rotating gear plate 212. Exemplarily, the center of mass position mark M is located near the gear tooth corresponding to the center of mass angle A.

[0115] Furthermore, the assembly process of step S300 includes the following sub-steps:

[0116] S310: rotating the vertical rotating body 21 so that the vertical rotating body 21 stops at a position where the center of mass position mark M rotates downward and the line connecting the center of rotation C is horizontal;

[0117] like Figure 5 As shown, taking the clockwise rotation of the vertical rotating body 21 as an example, when the center of mass position mark M rotates downward and the line connecting it with the rotation center C is in a horizontal position, the eccentric moment of the rotating body center of mass G is the largest.

[0118] S320: Assemble the rotation balancing mechanism 23 directly below the vertical rotating body 21, so that the distal end of the eccentric gear 231 is engaged with the rotating toothed disc 212;

[0119] Because the gear ratio between the rotating toothed disc 212 and the eccentric gear 231 is an integer, the assembly method of step S300 ensures that the distal end of the eccentric gear 231 meshes with the rotating toothed disc 212 each time the vertical rotating body 21 rotates to the position where the eccentric torque generated by the rotating body's center of mass G is maximized. In this step, the vertical rotating body 21 can also be stopped at a position directly below the center of mass position mark M, and the corresponding teeth of the eccentric gear 231 are meshed with the rotating toothed disc 212 by calculating the gear ratio. However, it is necessary to ensure that the distal end of the eccentric gear 231 meshes with the rotating toothed disc 212 each time the vertical rotating body 21 rotates to the position where the eccentric torque generated by the rotating body's center of mass G is maximized.

[0120] S330 detects the current value of the driving motor 221 , and when the current value amplitude is greater than a preset threshold, rotates the adjustment member 236 to increase the preload of the compression spring 232 .

[0121] Since the eccentric torques of different vertical rotating bodies 21 are of different sizes and will change during use, in order to balance the balancing resistance torque of the eccentric gear 231 on the vertical rotating body 21 with the eccentric torque of the vertical rotating body 21, the non-destructive testing method of this embodiment, through step S330, can change the basic elastic force of the compression spring 232 by adjusting the adjusting member 236, without the need to frequently replace compression springs 232 of different rigidities, so that the rotation balancing mechanism 23 has better flexibility and adaptability.

[0122] The nondestructive testing method of this embodiment achieves the beneficial effect of adaptively adjusting the rotational balance of the vertical rotating body 21 by assembling the rotational balancing mechanism 23 of Example 1 or Example 2 on the vertical rotating body 21, thereby improving the scanning accuracy and ensuring the quality and service life of key components of the product.

[0123] Furthermore, step S500 includes the following sub-steps:

[0124] S510 The workpiece conveyor belt drives the workpiece to be tested to move from the first channel 31 to the second channel 32;

[0125] S520 vertical rotating body 21 rotates and achieves adaptive balance;

[0126] S530 The scanning component 211 scans the workpiece to be measured to obtain a three-dimensional scanning image.

[0127] like Figure 8 As shown, the adaptive balancing of the vertical rotating body 21 in step S520 includes the following processes:

[0128] S521 The eccentric gear 231 moves up and down during rotation, causing the compression spring 232 to be repeatedly compressed and extended;

[0129] S522 The compression spring 232 applies an upward radial reaction force F1 to the eccentric gear 231 according to the amount of compression;

[0130] S523: The eccentric gear 231 transmits the radial reaction force F1 to the rotating toothed disc 212 through meshing, and a portion of the radial reaction force F1 is decomposed into a tangential rotational resistance F2 on the rotating toothed disc 212, so that the rotating toothed disc 212 is subjected to a rotational resistance torque.

[0131] S524 When the center of mass position mark M of the rotating body rotates downward and the line connecting it with the center of rotation C is horizontal, the eccentric gear 231 and the distal end of the rotating toothed disc 212 are engaged with the eccentric gear 231, and the compression amount of the compression spring 232 is the largest, so that the rotating toothed disc 212 is subjected to the largest rotational resistance torque to balance the maximum eccentric torque exerted on the vertical rotating body 21.

[0132] The nondestructive testing method of this embodiment, by employing the assembly method of step S300, ensures that when the vertical rotating body 21 rotates to the position where the center of mass eccentric load torque is maximum, the eccentric gear 231 compresses the compression spring 232 to the maximum extent, thereby maximizing the reaction force of the compression spring 232 on the eccentric gear 231. Consequently, the tangential rotational resistance F2 exerted by the eccentric gear 231 on the rotating toothed disc 212 is also maximized. Consequently, the rotational resistance torque experienced by the vertical rotating body 21 is also maximized when the eccentric torque is maximum, thereby ensuring the rotational balance of the vertical rotating body 21. Because the rotational speed ratio between the rotating toothed disc 212 and the eccentric gear 231 is an integer, the tangential rotational resistance F2 exerted by the eccentric gear 231 on the rotating toothed disc 212 is maximized each time the vertical rotating body 21 rotates to the position where the eccentric torque is maximum in this step.

[0133] Furthermore, in step S524 , when the eccentric torque of the vertical rotating body 21 increases or decreases, the rotational resistance torque on the rotating gear disc 212 also increases or decreases, thereby enabling the vertical rotating body 21 to achieve adaptive balance.

[0134] Since when the center of mass position mark M of the rotating body rotates downward and the line connecting it with the center of rotation C is close to horizontal, the change of the eccentric torque of the vertical rotating body 21 is a gradual increase and decrease process, and the compression amount of the compression spring 232 by the eccentric gear 231 also gradually increases and decreases, so that the tangential rotation resistance F2 acting on the rotating gear disc 212 by the eccentric gear 231 also increases and decreases accordingly, thereby enabling the vertical rotating body 21 to achieve adaptive balance during the rotation process.

[0135] Furthermore, after the scanning component 211 completes scanning the workpiece to be measured in step S600 , the workpiece conveyor belt will reverse and send the workpiece to be measured back to the first channel 31 , so that the workpiece to be measured is taken out from the shielding door of the first channel 31 .

[0136] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the scope of protection of the present invention.

Claims

1. An adaptive vehicle-mounted non-destructive testing system, characterized in that: It comprises a moving unit (1), a detection unit (2) and a channel unit (3); The channel unit (3) is connected to the detection unit (2), and the detection unit (2) is fixed on the moving unit (1); The detection unit (2) comprises a vertical rotating body (21) and a driving mechanism (22); the vertical rotating body (21) comprises a scanning assembly (211); and the driving mechanism (22) is capable of driving the scanning assembly (211) to perform nondestructive testing around a workpiece to be tested.

2. The vehicle-mounted nondestructive testing system according to claim 1, characterized in that: The vertical rotating body (21) further comprises a rotating toothed disc (212), the scanning assembly (211) is fixedly connected to the rotating toothed disc (212), and the driving mechanism (22) comprises a driving motor (221), and the driving motor (221) drives the rotating toothed disc (212) to rotate the scanning assembly (211).

3. The vehicle-mounted nondestructive testing system according to claim 2, characterized in that: The detection unit (2) further comprises a rotation balancing mechanism (23), which is arranged directly below the rotating toothed disc (212) and is used to balance the eccentric torque of the vertical rotating body (21) during rotation.

4. The vehicle-mounted nondestructive testing system according to claim 3, characterized in that: The rotation balancing mechanism (23) comprises a first mounting seat (234) and a second mounting seat (235), and the first mounting seat (234) and the second mounting seat (235) are slidably connected.

5. The vehicle-mounted nondestructive testing system according to claim 4, characterized in that: The rotation balancing mechanism (23) further includes a guide member (233), and the first mounting seat (234) slides up and down relative to the second mounting seat (235) via the guide member (233).

6. The vehicle-mounted nondestructive testing system according to claim 5, characterized in that: The rotation balancing mechanism (23) further includes a compression spring (232), which is arranged vertically and has two ends connected to the first mounting seat (234) and the second mounting seat (235), respectively.

7. The vehicle-mounted nondestructive testing system according to any one of claims 2 to 6, characterized in that: The channel unit (3) comprises a first channel (31) and a second channel (32), and the first channel (31) and the second channel (32) are respectively connected to two ends of the detection unit (2).

8. A vehicle-mounted nondestructive testing method, characterized in that: The vehicle-mounted nondestructive testing system according to any one of claims 1 to 7 comprises the following steps: Step S100: activating the mobile unit (1) to move the vehicle-mounted nondestructive testing system to a position to be tested; Step S200 detects the position of the center of mass G of the rotating body of the detection unit (2), and sets a center of mass position mark M according to the detection result; Step S300: assembling the rotation balancing mechanism (23) according to the position of the center of mass position mark M; Step S400: placing the workpiece to be tested in the channel unit (3); In step S500, the detection unit (2) performs scanning detection on the workpiece to be detected; At step S600, the scanning is completed, the non-destructive testing system is turned off, and the workpiece is taken out from the channel unit (3).

9. The vehicle-mounted nondestructive testing method according to claim 8, characterized in that: The driving mechanism (22) includes a driving motor (221), and the step S200 determines the position of the center of mass G of the rotating body by monitoring the current value of the driving motor (221).

10. The vehicle-mounted nondestructive testing method according to claim 9, characterized in that: The step S200 includes the following sub-steps: S210 sets a zero angle mark M0 on the rotating body (21) with the rotation center C of the rotating body (21) as the center of the circle, and takes the initial position of the zero angle mark MO as the zero angle position of the vertical rotating body; S220 starts the driving motor (221) to rotate the vertical rotating body and monitors the current value of the driving motor (221); S230 draws a current / angle curve of the driving motor (221) to determine the mass center angle A where the mass center G of the rotating body is located; S240 sets a mass center position mark M at the position of the mass center angle A on the rotating body (21) according to the zero angle mark M0.

Images