A measuring device for geometric irregularities of a high-temperature superconducting maglev system

Abstract

The utility model relates to high temperature superconducting maglev system unevenness detection technical field, more specifically, relate to a kind of high temperature superconducting maglev system geometric unevenness measuring device, the device includes car body, travelling device, synchronous lifting device and detection component, car body is set above permanent magnet track, car body is parallelly arranged with permanent magnet track;Travelling device is set below car body;Synchronous lifting device is set between car body and travelling device, synchronous lifting device is provided with four, synchronous lifting device is respectively set in four corners of car body, and synchronous lifting device is used to drive car body synchronous lifting along the vertical direction of permanent magnet track;Detection component includes hall sensor and laser displacement sensor, hall sensor and laser displacement sensor are all set in the side of car body close to permanent magnet track, the utility model, significantly improve the detection efficiency, provide reliable technical support for the safe operation and state evaluation of high temperature superconducting maglev system.

Description

Technical Field

[0001] This utility model relates to the field of non-roughness detection technology for high-temperature superconducting magnetic levitation systems, and more specifically, to a measuring device for geometric non-roughness in high-temperature superconducting magnetic levitation systems. Background Technology

[0002] High-temperature superconducting pinned maglev technology, as an advanced rail transit mode with self-stabilizing characteristics, relies directly on the magnetic field quality provided by the permanent magnet track for its levitation and guidance performance. However, due to unavoidable geometric errors during the manufacturing and installation of permanent magnets, geometric irregularities such as uneven joints, misaligned teeth, and low joints can occur in the track, leading to uneven magnetic field distribution, affecting the stability of the levitation gap, and potentially endangering train safety in severe cases. Existing detection devices mostly rely on complex integrated structures, which are costly, have limited adaptability, and cannot simultaneously achieve high-precision multi-scale measurements of geometric and magnetic field parameters. Therefore, there is an urgent need to develop a new irregularity detection method that can adapt to different operating conditions and simultaneously capture geometric and magnetic field characteristics. Utility Model Content

[0003] The purpose of this invention is to provide a measuring device for geometric irregularities in high-temperature superconducting magnetic levitation systems, thereby improving the aforementioned problems. To achieve this objective, the technical solution adopted by this invention is as follows:

[0004] This application provides a measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system. The device includes a vehicle body, a traveling device, a synchronous lifting device, and a detection component. The vehicle body is positioned above and parallel to the permanent magnet track. The traveling device is positioned below the vehicle body. Four synchronous lifting devices are positioned between the vehicle body and the traveling device, respectively located at the four corners of the vehicle body. The synchronous lifting devices are used to drive the vehicle body to move synchronously up and down along the vertical direction of the permanent magnet track. The detection component includes a Hall sensor and a laser displacement sensor, both of which are located on the side of the vehicle body closest to the permanent magnet track.

[0005] Optionally, the vehicle body includes a transverse web and wing plates, the wing plates being disposed on both sides of the transverse web, and data acquisition devices being disposed on the wing plates.

[0006] Optionally, a mounting hole is provided on the transverse web plate, and a triaxial acceleration sensor is installed in the mounting hole. The triaxial acceleration sensor is arranged parallel to the upper surface of the vehicle body.

[0007] Optionally, the synchronous lifting device includes a lifting platform, a lifting rod, a transmission rod, a gearbox, and a rotating handle. The lifting platform is mounted on the lifting rod, and two adjacent lifting platforms are connected by the transmission rod. The gearbox is mounted on the transmission rod, and the rotating handle is connected to the gearbox.

[0008] Optionally, the lifting rod is provided with threads.

[0009] Optionally, the walking device includes a base and wheels, the base being disposed at the bottom of the lifting rod, and the wheels being fixedly connected to the base.

[0010] Optionally, a guide rod is provided between the bases, the guide rod is provided along the extension direction of the permanent magnet track, two adjacent bases are connected by the guide rod, and a guide wheel is provided on the guide rod, the guide wheel is perpendicular to the walking wheel.

[0011] Optionally, the Hall sensor is positioned directly above the permanent magnet track, and the Hall sensor is arranged parallel to the permanent magnet track.

[0012] Optionally, the laser displacement sensor includes at least two sets, which are respectively positioned directly above the permanent magnet track and the traveling track.

[0013] Optionally, three laser profile scanners are provided on the side of the vehicle body near the permanent magnet track, and the laser profile scanners are respectively positioned directly above the permanent magnet track and the linear motor stator.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention achieves high-precision synchronous detection of geometric and magnetic irregularities in permanent magnet tracks by employing an integrated structural design comprising a vehicle body, a traveling device, a synchronous lifting device, and a detection component. The vehicle body is positioned parallel to the permanent magnet track, the traveling device ensures stable movement, and four synchronous lifting devices are located at the four corners of the vehicle body. The vehicle body is raised and lowered synchronously in the vertical direction by rotating a handle, gearbox, and transmission rod, allowing for flexible adjustment of the detection height to meet different magnetic field measurement requirements. The Hall effect sensor in the detection component detects the magnetic field strength above the permanent magnet track, while the laser displacement sensor directly measures the track's geometric irregularities based on the string measurement principle. The combination of these two components effectively improves the comprehensiveness and accuracy of the data. This device has a reasonable structure, is easy to operate, and significantly improves detection efficiency, providing reliable technical support for the safe operation and condition assessment of high-temperature superconducting maglev systems.

[0016] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the measuring device for geometric irregularities in the high-temperature superconducting magnetic levitation system described in this utility model.

[0019] Figure 2 This is a bottom view of the measuring device for geometrically irregularities in a high-temperature superconducting magnetic levitation system.

[0020] Figure 3 This is a side view of the measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system.

[0021] The markings in the diagram are: 1. Car body; 2. Transverse web plate; 3. Wing plate; 4. Data acquisition device; 5. Triaxial accelerometer; 6. Elevator; 7. Lifting rod; 8. Transmission rod; 9. Gearbox; 10. Rotating handle; 11. Base; 12. Traveling wheel; 13. Guide rod; 14. Guide wheel; 15. Hall sensor; 16. Laser displacement sensor; 17. Laser profile scanner; 18. Permanent magnet track; 19. Traveling rail; 20. Linear motor stator. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system. The device includes a vehicle body 1, a traveling device, a synchronous lifting device, and a detection component. The vehicle body 1 is positioned above a permanent magnet track 18, and the vehicle body 1 is parallel to the permanent magnet track 18. The traveling device is positioned below the vehicle body 1. Four synchronous lifting devices are positioned between the vehicle body 1 and the traveling device, and are respectively located at the four corners of the vehicle body 1. The synchronous lifting devices are used to drive the vehicle body 1 to move synchronously up and down along the vertical direction of the permanent magnet track 18. The detection component includes a Hall sensor 15 and a laser displacement sensor 16, both of which are located on the side of the vehicle body 1 closest to the permanent magnet track 18. This invention addresses the shortcomings of existing permanent magnet track irregularity detection technologies, such as measurement limitations due to speed, difficulty in separately acquiring random geometric irregularities caused by permanent magnet track installation errors, inability to identify short-wavelength irregularities caused by permanent magnet splicing seams, and the high cost and inability to simultaneously and accurately measure both geometric irregularities and magnetic field inhomogeneity of the permanent magnet track. By designing an integrated structure encompassing the vehicle body 1, the traveling device, the synchronous lifting device, and the detection components, this invention achieves speed-independent, flexible adaptation to different wavelength ranges for geometric irregularity detection and different height magnetic field strength measurements, while simultaneously acquiring geometric and magnetic field irregularity parameters of the permanent magnet track. This provides reliable technical support for the safe operation and condition assessment of high-temperature superconducting maglev systems.

[0025] In one specific embodiment of this disclosure, the vehicle body 1 includes a transverse web plate 2 and a wing plate 3. The wing plate 3 is disposed on both sides of the transverse web plate 2. A data acquisition device 4 is disposed on the wing plate 3. The data acquisition device 4 realizes centralized collection and integration of detection data from various sensors such as the Hall sensor 15 and the laser displacement sensor 16 in the detection assembly, avoiding the problem of low detection efficiency caused by data dispersion, ensuring the integrity and uniformity of the detection data, providing reliable data support for the accurate analysis of the geometric irregularities and magnetic field irregularities of the permanent magnet track in the future, and further improving the practicality and convenience of the device for detection.

[0026] In one specific embodiment of this disclosure, a mounting hole is provided on the transverse web plate 2, and a triaxial accelerometer 5 is installed in the mounting hole. The triaxial accelerometer 5 is arranged parallel to the upper surface of the vehicle body 1. The triaxial accelerometer 5 accurately measures the acceleration in the three coordinate axes of the vehicle body 1, thereby correcting the measurement error caused by the attitude deviation of the vehicle body 1 during the detection process to the detection components such as the laser displacement sensor 16, further improving the accuracy of the detection of geometric irregularities and magnetic field irregularities of the permanent magnet track, and ensuring the reliability of the detection data.

[0027] In one specific embodiment of this disclosure, the synchronous lifting device includes a lifting platform 6, a lifting rod 7, a transmission rod 8, a gearbox 9, and a rotating handle 10. The lifting platform 6 is mounted on the lifting rod 7, and adjacent lifting platforms 6 are connected by the transmission rod 8. The gearbox 9 is mounted on the transmission rod 8, and the rotating handle 10 is connected to the gearbox 9. By rotating the rotating handle 10 connected to the gearbox 9, the gear inside the gearbox 9 is driven to rotate. The gear transmission drives the transmission rod 8 connected to it to rotate synchronously. Since the four lifting platforms 6 are connected to each other through the transmission rod 8, the rotation of the transmission rod 8 will be transmitted synchronously to each lifting platform 6, so that the lifting platform 6 moves synchronously in the vertical direction along the lifting rod 7, thereby driving the car body 1 connected to the lifting platform 6 to achieve smooth vertical lifting and lowering, and finally achieving the control objective of adjusting the height between the car body 1 and the permanent magnet track 18, adapting to different magnetic field strengths at different heights, and detecting track irregularities.

[0028] In one specific embodiment of this disclosure, the lifting rod 7 is provided with threads. By providing threads on the lifting rod 7, the lifting machine 6 and the lifting rod 7 form a threaded transmission engagement, which improves the adjustment accuracy and positioning stability of the car body 1 during the lifting process, avoids loosening or deviation during the lifting process, ensures the relative position accuracy of the car body 1 and the permanent magnet track 18 when detecting at different heights, and provides structural support for the accurate measurement of magnetic field strength and track irregularity parameters.

[0029] In one specific embodiment of this disclosure, the walking device includes a base 11 and a walking wheel 12. The base 11 is disposed at the bottom of the lifting rod 7, and the walking wheel 12 is fixedly connected to the base 11.

[0030] In one specific embodiment of this disclosure, a guide rod 13 is provided between the bases 11. The guide rod 13 is arranged along the extension direction of the permanent magnet track 18. Two adjacent bases 11 are connected by the guide rod 13. A guide wheel 14 is provided on the guide rod 13. The guide wheel 14 is arranged perpendicular to the traveling wheel 12. The guide wheel 14, which is perpendicular to the traveling wheel 12, is provided on the guide rod 13 to constrain the lateral degree of freedom of the vehicle body 1, avoid the vehicle body 1 from serpentine movement or lateral deviation during the detection process, further improve the stability and directionality of the device when it moves, ensure that the detection component is always aligned with the detection target, and ensure the accuracy of the detection data.

[0031] In one specific embodiment of this disclosure, the Hall sensor 15 is disposed directly above the permanent magnet track 18 and is parallel to the permanent magnet track 18. By disposing the Hall sensor 15 directly above and parallel to the permanent magnet track 18, the Hall sensor 15 can more accurately capture the magnetic field distribution of the permanent magnet track 18, reduce the magnetic field strength measurement error caused by installation angle or position deviation, and ensure the accuracy of magnetic field irregularity parameter detection.

[0032] In one specific embodiment of this disclosure, the laser displacement sensor 16 includes at least two sets, and the two sets of laser displacement sensors 16 are respectively disposed directly above the permanent magnet track 18 and the traveling track 19.

[0033] In one specific embodiment of this disclosure, three laser profile scanners 17 are installed on the side of the vehicle body 1 closest to the permanent magnet track 18. The laser profile scanners 17 are respectively positioned directly above the permanent magnet track 18 and the linear motor stator 20. In the high-temperature superconducting pinned maglev system, the linear motor, in addition to providing traction force, also generates a normal force related to the suspension gap. However, structural irregularities in the linear motor stator 20 caused by installation errors can lead to fluctuations in the normal force, thereby affecting the stability and comfort of the train operation. By installing three laser profile scanners 17 on the side of the vehicle body closest to the permanent magnet track 18, respectively corresponding to the permanent magnet track 18 and the linear motor stator 20, point cloud images of the surfaces of both can be collected, their true geometric state can be inverted, and irregularities such as joints and misalignments on the surface of the permanent magnet track 18 and geometric irregularities on the surface of the linear motor stator 20 can be accurately identified. This compensates for the shortcomings of laser displacement sensors in detecting surface details, and comprehensively grasps the irregularities of the permanent magnet track 18 and the linear motor stator 20, providing a more comprehensive and reliable technical basis for the evaluation and optimization of the suspension performance of the high-temperature superconducting maglev system.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system, characterized in that, include: The vehicle body (1) is positioned above the permanent magnet track (18) and is arranged parallel to the permanent magnet track (18); A walking device is disposed below the vehicle body (1); Synchronous lifting device, the synchronous lifting device is set between the vehicle body (1) and the traveling device, the synchronous lifting device is set in four, the synchronous lifting device is set at the four corners of the vehicle body (1), the synchronous lifting device is used to drive the vehicle body (1) to rise and fall synchronously along the vertical direction of the permanent magnet track (18); The detection component includes a Hall sensor (15) and a laser displacement sensor (16), both of which are located on the side of the vehicle body (1) near the permanent magnet track (18).

2. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 1, characterized in that: The vehicle body (1) includes a transverse web (2) and a wing (3). The wing (3) is disposed on both sides of the transverse web (2), and a data acquisition device (4) is disposed on the wing (3).

3. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 2, characterized in that: The transverse web (2) is provided with mounting holes, and a triaxial acceleration sensor (5) is provided in the mounting holes. The triaxial acceleration sensor (5) is arranged parallel to the upper surface of the vehicle body (1).

4. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 1, characterized in that: The synchronous lifting device includes a lifting machine (6), a lifting rod (7), a transmission rod (8), a gearbox (9), and a rotating handle (10). The lifting machine (6) is sleeved on the lifting rod (7), and two adjacent lifting machines (6) are connected by the transmission rod (8). The gearbox (9) is set on the transmission rod (8), and the rotating handle (10) is connected to the gearbox (9).

5. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 4, characterized in that: The lifting rod (7) is threaded.

6. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 4, characterized in that: The walking device includes a base (11) and a walking wheel (12). The base (11) is located at the bottom of the lifting rod (7), and the walking wheel (12) is fixedly connected to the base (11).

7. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 6, characterized in that: A guide rod (13) is provided between the bases (11). The guide rod (13) is provided along the extension direction of the permanent magnet track (18). Two adjacent bases (11) are connected by the guide rod (13). A guide wheel (14) is provided on the guide rod (13). The guide wheel (14) is perpendicular to the walking wheel (12).

8. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 1, characterized in that: The Hall sensor (15) is positioned directly above the permanent magnet track (18), and the Hall sensor (15) is arranged parallel to the permanent magnet track (18).

9. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 1, characterized in that: The laser displacement sensor (16) includes at least two sets, with the two sets of laser displacement sensors (16) respectively positioned directly above the permanent magnet track (18) and the travel track (19).

10. The measuring device for geometric irregularities in a high-temperature superconducting magnetic levitation system according to claim 1, characterized in that: Three laser profile scanners (17) are provided on the side of the vehicle body (1) near the permanent magnet track (18), and the laser profile scanners (17) are respectively located directly above the permanent magnet track (18) and the linear motor stator (20).

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