Suspension type permanent magnetic floating track beam inner width detection device

Abstract

The embodiment of the application provides a kind of suspension type permanent magnetic levitation track beam inner width detection device, belong to magnetic levitation track technical field.Track beam is the inverted U type box beam with internal accommodating space, the web of track beam is oppositely provided with permanent magnetic track along the extension direction of track beam, device includes: support frame;Walking mechanism is set in support frame bottom, walking mechanism can walk along permanent magnetic track, make support frame move in the internal accommodating space of track beam along the extension direction of track beam;Guiding mechanism is set on the two opposite sides of support frame, and is in contact with the two side webs of track beam;Distance detection mechanism is set on support frame, for obtaining the inner width of track beam at different positions in extension direction in the process that walking mechanism walks along permanent magnetic track.The detection device of the application has the advantages of simple structure, convenient maintenance, high detection precision, high detection efficiency and wide application range.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation track technology, and more specifically to a device for detecting the inner width of a suspended permanent magnet maglev track beam. Background Technology

[0002] Suspended monorail is a special type of rail transit with a series of advantages, including safety and reliability, flexible train formation, short construction period, low cost, small land occupation and demolition area, strong line adaptability, and the ability to be disassembled and reused. Suspended monorail breaks away from the past ground-based rail transit model and develops into an elevated rail transit system, having minimal impact on existing ground and underground transportation systems. It saves urban infrastructure space while effectively alleviating urban traffic congestion, becoming an excellent choice for relieving current urban traffic pressure.

[0003] Compared to traditional wheel-rail vehicle systems, maglev vehicles eliminate the adhesion limits of wheel-rail vehicles through their "non-contact" operation, avoiding the problems of serpentine motion and idling. They can achieve frictionless operation and have characteristics such as low noise, low energy consumption, and good stability. Therefore, maglev trains have the potential to become a future ultra-high-speed transportation tool and are an inevitable development trend for high-comfort rail transit. Permanent magnet levitation trains utilize the magnetic repulsion between onboard permanent magnet blocks and permanent magnet tracks to achieve passive levitation of the vehicle. They can achieve static and dynamic permanent levitation without the need for complex control systems, and have the potential for "zero-power" levitation, providing a new research idea and direction for the development of maglev vehicles.

[0004] The suspended permanent magnet maglev rail transit system is a deep and organic integration of suspended monorail and permanent magnet maglev technologies. It combines the technological advantages of both suspended monorail trains and permanent magnet maglev trains, breaking through the speed limit of wheel-rail monorails while avoiding the high costs of electromagnetic levitation and superconducting levitation. As a brand-new transportation mode, it uses a suspension device to suspend the car body below the track beam, which is an elevated structure supported by columns, allowing the suspended maglev train to run smoothly and safely in mid-air.

[0005] In the entire suspended rail transit system, the track beams serve to support vehicles, traction power grid carriers, and define the driving route. They are the guarantee for fulfilling the load-bearing task and the foundation of the entire transportation system. On the other hand, the track beams not only control train operation and vehicle guidance but also reflect many track variation factors, such as horizontal curves, transition curves, and vertical curves.

[0006] However, during train system operation, frequent emergency braking, train passage through curves, and suspension height drift all cause the guide rubber wheels to exert long-term pressure on the track beam, leading to deformation of the track beam web. Furthermore, without considering external forces, the track beam web surface is prone to abrasion, rust, and defects. These factors contribute to unevenness in the track beam web, affecting train safety and passenger comfort, and are also a cause of increased vehicle vibration. To prevent these phenomena, or even their exacerbation, it is necessary to regularly inspect the inner width of the track beam and promptly repair any abnormalities based on the inspection results, ensuring the track beam smoothness required for safe operation. If the inner width of the track beam is manually measured along the train's direction of travel using equipment, the inspection process is time-consuming, labor-intensive, cumbersome, and has low accuracy, ultimately significantly affecting the accuracy of the detected track beam geometric parameters. Summary of the Invention

[0007] The purpose of this invention is to provide a suspended permanent magnet maglev track beam inner width detection device. This device solves the problem that relying on manual measurement of the track beam inner width by carrying equipment is time-consuming, labor-intensive, involves many steps, is labor-intensive, and has low detection accuracy, which ultimately leads to a significant impact on the accuracy of the detected track beam geometric parameters.

[0008] To achieve the above objectives, embodiments of the present invention provide a suspended permanent magnet maglev track beam inner width detection device. The track beam is an inverted U-shaped box beam with an internal accommodating space. Permanent magnet tracks are arranged opposite each other on the web of the track beam along its extension direction. The device includes:

[0009] Support frame;

[0010] A traveling mechanism is provided at the bottom end of the support frame. The traveling mechanism is able to travel along the permanent magnet track, so that the support frame can move in the internal accommodating space of the track beam along the extension direction of the track beam.

[0011] The guide mechanism is disposed on two opposite sides of the support frame and contacts the two side webs of the track beam;

[0012] A distance detection mechanism is installed on the support frame to obtain the inner width of the track beam at different positions in the extension direction during the travel of the walking mechanism along the permanent magnet track.

[0013] Optionally, the device further includes:

[0014] A height adjustment mechanism is disposed between the support frame and the traveling mechanism for adjusting the height of the support frame relative to the traveling mechanism.

[0015] Optionally, the height adjustment mechanism includes:

[0016] Multiple electric cylinders are symmetrically arranged between the support frame and the traveling mechanism. The fixed end of each electric cylinder is connected to the traveling mechanism, and the free end of each electric cylinder is connected to the support frame; or

[0017] Multiple hydraulic cylinders are symmetrically arranged between the support frame and the traveling mechanism. The fixed end of the hydraulic cylinder is connected to the traveling mechanism, and the free end of the hydraulic cylinder is connected to the support frame.

[0018] Optionally, the walking mechanism includes:

[0019] Mounting bracket for supporting the support frame;

[0020] A drive motor, mounted on the mounting bracket, is used to generate driving force;

[0021] A set of drive wheels are arranged opposite to each other at one end of the mounting frame and connected to the drive shaft of the drive motor via a reducer;

[0022] A set of wheels is positioned opposite to the other end of the mounting frame.

[0023] Optionally, the guiding mechanism includes:

[0024] The first guide mechanism is fixedly installed on one side of the support frame and contacts one side web of the track beam;

[0025] The second guide mechanism is telescopically mounted on the other side of the support frame and contacts the other side web of the track beam.

[0026] Optionally, the first guiding mechanism includes:

[0027] Multiple first rollers are spaced apart on one side of the support frame by support rods and contact one side web of the track beam.

[0028] Optionally, the second guiding mechanism includes:

[0029] Multiple second rollers are spaced apart on one side of the support frame by spring sets and contact one side web of the track beam.

[0030] Optionally, the distance detection mechanism includes:

[0031] At least one distance detection sensor is mounted on the support frame to acquire a distance detection signal between itself and the web of the track beam;

[0032] The processor, mounted on the support frame, is communicatively connected to the distance detection sensor and determines the inner width of the track beam based on the received distance detection signal.

[0033] Optionally, the device further includes:

[0034] A shielding cover is mounted on a support frame, and the distance detection mechanism is located inside the shielding cover. The shielding cover is used to shield external magnetic fields.

[0035] Optionally, the support frame is a frame-type support frame; at least one fixed crossbar is provided inside the support frame, and the distance detection mechanism is disposed on the fixed crossbar.

[0036] The detection device of this technical solution can obtain the inner width of the track beam at different positions in the extension direction during the movement along the permanent magnet track. The detection device has a simple structure, is easy to maintain, and can improve the efficiency and quality of detection, increase the detection accuracy, reduce the detection cost and save time. It avoids the errors and tedious steps of manual detection, and obtains an intuitive view of the smoothness of the track beam web, providing a reliable data source for subsequent maintenance.

[0037] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0038] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0039] Figure 1 This is a schematic diagram of the structure of the first suspended permanent magnet maglev track beam inner width detection device provided by the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the second type of suspended permanent magnet maglev track beam inner width detection device provided by the present invention;

[0041] Figure 3 This is a top view of the suspended permanent magnet maglev track beam inner width detection device provided by the present invention;

[0042] Figure 4 This is a partial structural schematic diagram of the walking mechanism of the suspended permanent magnet maglev track beam inner width detection device provided by the present invention;

[0043] Figure 5 This is a flowchart of the detection process of the suspended permanent magnet maglev track beam inner width detection device provided by the present invention.

[0044] Explanation of reference numerals in the attached figures

[0045] 1- Track beam; 2- Support frame;

[0046] 3-Walking mechanism; 4-Guiding mechanism;

[0047] 5-Distance detection mechanism; 6-Height adjustment mechanism;

[0048] 7-Shielding cover; 11-Permanent magnet track;

[0049] 21-Fixed crossbar; 31-Mounting bracket;

[0050] 32-Drive motor; 33-Drive wheel;

[0051] 34-Reducer; 41-First guide mechanism;

[0052] 42-Second guiding mechanism; 51-Distance detection sensor;

[0053] 52 - Processor; 101 - Abdomen;

[0054] 102 - Horizontal connecting plate; 411 - First roller;

[0055] 412 - Support rod; 421 - Second roller;

[0056] 422 - Spring assembly. Detailed Implementation

[0057] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0058] In the embodiments of the present invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use.

[0059] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0060] The terms "parallel" and "perpendicular" do not mean that the components must be absolutely parallel or perpendicular, but rather that they can be slightly tilted. For example, "parallel" simply means that its direction is more parallel than "perpendicular," not that the structure must be completely parallel, but that it can be slightly tilted.

[0061] The terms "horizontal," "vertical," and "sag" do not imply that a component must be absolutely horizontal, vertical, or sagging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] Furthermore, terms like "roughly" and "basically" are used to indicate that the content does not require absolute precision, but rather allows for a certain degree of deviation. For example, "roughly equal" does not simply mean absolute equality; in actual production and operation, achieving absolute "equality" is difficult, and a certain degree of deviation is generally present. Therefore, besides absolute equality, "roughly equal to" also includes the aforementioned situation where a certain degree of deviation exists. Using this as an example, in other cases, unless otherwise specified, terms like "roughly" and "basically" have similar meanings.

[0063] In the description of this invention, 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 invention based on the specific circumstances.

[0064] Figure 1 This is a schematic diagram of the structure of the first suspended permanent magnet maglev track beam inner width detection device provided by the present invention; Figure 2 This is a schematic diagram of the structure of the second type of suspended permanent magnet maglev track beam inner width detection device provided by the present invention; Figure 3 This is a top view of the suspended permanent magnet maglev track beam inner width detection device provided by the present invention; Figure 4 This is a partial structural schematic diagram of the walking mechanism of the suspended permanent magnet maglev track beam inner width detection device provided by the present invention; Figure 5 This is a flowchart of the detection process of the suspended permanent magnet maglev track beam inner width detection device provided by the present invention.

[0065] like Figure 1-3 This embodiment provides a suspended permanent magnet maglev track beam inner width detection device. The track beam 1 is an inverted U-shaped box girder with an internal accommodating space. A permanent magnet track 11 is arranged on the web 101 of the track beam 1 along the extending direction of the track beam 1. The device includes:

[0066] Support frame 2;

[0067] The walking mechanism 3 is located at the bottom of the support frame 2. The walking mechanism 3 can travel along the permanent magnet track 11, so that the support frame 2 can move in the internal accommodating space of the track beam 1 along the extension direction of the track beam 1.

[0068] The guide mechanism 4 is disposed on two opposite sides of the support frame 2 and contacts the two side webs 101 of the track beam 1;

[0069] The distance detection mechanism 5 is installed on the support frame 2 and is used to obtain the inner width of the track beam 1 at different positions in the extension direction during the process of the walking mechanism 3 traveling along the permanent magnet track 11.

[0070] Specifically, the track beam 1 is an inverted U-shaped box girder composed of a transverse connecting plate 102 and two web plates 101. The transverse connecting plate 102 and the two web plates 101 constitute the internal accommodating space of the track beam 1. The support frame 2 has a certain structural strength and can support the distance detection mechanism 5. The support frame 2 adopts a frame structure, which has the advantages of light weight, low cost and less material usage. The light weight of the detection device makes it less damaging to the interior of the track beam 1 and the permanent magnet track 11 when it travels on the permanent magnet track 11. The walking mechanism 3 can generate driving force to drive the support frame 2 to move along the extension direction of the track beam 1 in the internal accommodating space of the track beam 1, thereby realizing the detection of the inner width at different positions in the extension direction of the track beam 1. The guide mechanism 4 is always in contact with the two web plates 101 on both sides of the track beam 1 to ensure that the detection device can move smoothly when there are unevenness in the web plates 101 of the track beam 1 or when turning at the curved part of the track beam 1.

[0071] Furthermore, the device also includes:

[0072] A height adjustment mechanism 6 is disposed between the support frame 2 and the traveling mechanism 3, and is used to adjust the height of the support frame 2 relative to the traveling mechanism 3.

[0073] Specifically, since suspended permanent magnet maglev vehicles typically have numerous guide wheels, and the contact positions between different guide wheels and the web 101 of the track beam 1 are at different heights, the detection device is configured with a height adjustment function to accurately detect different contact positions of the track beam 1. In this embodiment, a height adjustment mechanism 6 is installed between the support frame 2 and the traveling mechanism 3. The height adjustment mechanism 6 can adjust the height of the support frame 2 relative to the traveling mechanism 3, thereby enabling the detection of different heights of the web 101 of the track beam 1.

[0074] Furthermore, the height adjustment mechanism 6 includes:

[0075] Multiple electric cylinders are symmetrically arranged between the support frame 2 and the traveling mechanism 3. The fixed end of each electric cylinder is connected to the traveling mechanism 3, and the free end of each electric cylinder is connected to the support frame 2; or

[0076] Multiple hydraulic cylinders are symmetrically arranged between the support frame 2 and the traveling mechanism 3. The fixed end of the hydraulic cylinder is connected to the traveling mechanism 3, and the free end of the hydraulic cylinder is connected to the support frame 2.

[0077] Specifically, in this embodiment, to simplify the overall structure of the detection device and facilitate rapid height adjustment, the height adjustment mechanism 6 is configured to adjust the height via a pneumatic cylinder, electric cylinder, hydraulic cylinder, or screw lifting mechanism. When using multiple electric cylinders or multiple hydraulic cylinders or screw lifting mechanisms, four can be used, arranged in a rectangular structure. When height adjustment is required, all four pneumatic cylinders, electric cylinders, hydraulic cylinders, or screw lifting mechanisms are adjusted synchronously to improve overall stability. The specific connection structure for lifting via electric cylinders, hydraulic cylinders, or screw lifting mechanisms is prior art known to those skilled in the art and will not be described further here.

[0078] Furthermore, such as Figure 4 As shown, the walking mechanism 3 includes:

[0079] Mounting bracket 31 is used to support the support frame 2;

[0080] A drive motor 32 is mounted on the mounting bracket 31 and is used to generate driving force;

[0081] A set of drive wheels 33 are disposed opposite to one end of the mounting bracket 31 and connected to the drive shaft of the drive motor 32 via a reducer 34;

[0082] A set of wheels is positioned opposite to the other end of the mounting bracket 31.

[0083] Specifically, in this embodiment, the walking mechanism 3 includes a mounting frame 31, on which a drive motor 32 is mounted. The output shaft of the drive motor 32 is connected to a reducer 34, and the output shaft of the reducer 34 is connected to a drive wheel 33. The drive motor 32 enables the drive wheel 33 to rotate, thereby moving the detection device. Specifically, the mounting frame 31 is fixed to the height adjustment mechanism 6. A set of two drive wheels 33 are arranged opposite each other at one end of the mounting frame 31; a set of two walking wheels are arranged opposite each other at the other end of the mounting frame 31; the two walking wheels and the two drive wheels 33 form a rectangular distribution, thereby achieving structural stability.

[0084] Furthermore, the guiding mechanism 4 includes:

[0085] The first guide mechanism 41 is fixedly installed on one side of the support frame 2 and contacts one side web plate 101 of the track beam 1.

[0086] The second guide mechanism 42 is telescopically mounted on the other side of the support frame 2 and contacts the other side web plate 101 of the track beam 1.

[0087] Specifically, in this embodiment, in order to guide the support frame 2, guide mechanisms 4 are provided on both sides of the support frame 2, including: a first guide mechanism 41 and a second guide mechanism 42, to ensure that the device can move smoothly when there are unevenness in the web 101 of the track beam 1 and when turning at the curved part of the track beam 1.

[0088] Furthermore, the first guiding mechanism 41 includes:

[0089] Multiple first rollers 411 are spaced apart on one side of the support frame 2 by support rods 412 and contact one side web plate 101 of the track beam 1.

[0090] Specifically, in this embodiment, the wheel bodies of the first rollers 411 are all made of non-magnetic stainless steel, reducing interference from the permanent magnet magnetic field and effectively reducing the diffusion of magnetic field lines, thereby reducing the measurement error of the equipment. Multiple first rollers 411 are spaced apart and symmetrically arranged on one side of the support frame 2, and the rolling direction of the first rollers 411 is along the extension direction of the track beam 1. Specifically, four first rollers 411 can be provided, distributed in a rectangular structure on one side of the support frame 2.

[0091] Furthermore, the second guide mechanism 42 includes:

[0092] Multiple second rollers 421 are spaced apart on one side of the support frame 2 by spring groups 422 and contact one side web plate 101 of the track beam 1.

[0093] Specifically, in this embodiment, the wheel bodies of the second rollers 421 are all made of non-magnetic stainless steel, reducing interference from the permanent magnet field and effectively reducing the diffusion of magnetic field lines, thereby reducing the measurement error of the equipment. Multiple second rollers 421 are spaced apart and symmetrically arranged on another side of the support frame 2, that is, the side opposite to the multiple first rollers 411, and the rolling direction of the second rollers 421 is along the extension direction of the track beam 1. Specifically, two second rollers 421 can be provided, distributed at the same height on the other side of the support frame 2. Furthermore, to ensure smooth movement of the device when there are uneven surfaces on the web 101 of the track beam 1 or when turning at curved sections of the track beam 1, each second roller 421 is connected to the corresponding side of the support frame 2 via a spring assembly 422. During the detection process, the spring assembly 422 is always in a compressed state, with a deformation of ±50mm, ensuring that during movement, both the first rollers 411 and the second rollers 421 are in close contact with the web 101 of the track beam 1.

[0094] In this embodiment, in order to ensure that the second guide mechanism 42 has a certain deformation recovery capability, the spring group 422 can specifically be provided with three springs. The three springs are on the same plane, and one end of the three springs is connected to the roller 411, while the other end of the three springs is connected to different positions of the support frame 2.

[0095] Furthermore, the distance detection mechanism 5 includes:

[0096] At least one distance detection sensor 51 is mounted on the support frame 2 for acquiring a distance detection signal between itself and the web 101 of the track beam 1;

[0097] The processor 52 is mounted on the support frame 2 and is communicatively connected to the distance detection sensor 51. It determines the inner width of the track beam 1 based on the received distance detection signal.

[0098] Specifically, the distance detection sensor 51 and the processor 52 transmit data via a data transmission line. The sampling frequency of the distance detection sensor 51 can be 0.1 to 3000 Hz. In this embodiment, the distance between the web 101 of the track beam 1 on one side of the first guide mechanism 41 and the mounting point of the distance detection sensor 51 is set to a fixed value 'a', and the distance between the web 101 of the track beam 1 on one side of the second guide mechanism 42 and the mounting point of the distance detection sensor 51 is the actual measured value 'b'. The total width of the track beam can be expressed as a + b. Data 'b' is fed back in the form of an electrical signal, then transmitted to the data acquisition card via the data transmission line, and finally stored by the processor 52. During the movement, the spring assembly 422 can freely extend and retract to adapt to changes in the inner width of the track beam, ensuring that the guide wheels on both sides are in close contact with the inner wall of the track beam 1 during the movement of the detection device. When the distance from the sensor mounting point to the web 101 of the track beam 1 changes, the corresponding value 'b' will also change. The processor 52 can be a microcontroller or a processing chip with certain computing capabilities.

[0099] More specifically, in this embodiment, the sampling frequency of the distance detection sensor 51 is set to 2000Hz. When the detection device travels along the extension direction of the track beam 1 for 1 second, it can capture 2000 sampling points between the web plates 101 of the track beam 1. The increase in the number of sampling points can greatly reduce the measurement error. The width of the support frame 2 is set to 680mm. The width of the support frame 2 is designed under the premise of knowing the inner width of the track beam 1. The support frame 2 is required to be easily placed inside the track beam 1. The deformation degree of the spring of the second roller 421 is ±50mm. The second roller 421 can well match the width change between the web plates 101 of the track beam 1 within the deformation range.

[0100] In another embodiment, since suspended permanent magnet maglev vehicles are usually equipped with a number of guide wheels, and the contact positions of different guide wheels with the track beam 1 are at different heights, in order to achieve accurate and simultaneous detection of different contact positions of the track beam 1 and improve detection efficiency, multiple distance detection sensors 51 are set, and the multiple distance detection sensors 51 are at different heights to obtain distance detection signals between the guide wheels and the web plate 101 of the track beam 1 at different heights. The specific height of the multiple distance detection sensors 51 is determined by the contact position of the guide wheels of the maglev train with the web plate 101 of the track beam 1.

[0101] Furthermore, the device also includes:

[0102] A shielding cover 7 is mounted on a support frame 2, and the distance detection mechanism 5 is located inside the shielding cover 7. The shielding cover 7 is used to shield external magnetic fields.

[0103] Specifically, compared to traditional wheel-rail track beams, permanent magnet maglev trains rely on permanent magnet tracks for stable levitation. The internal space of the track beam 1 has a significant strong magnetic field, which can cause electromagnetic interference to the measuring equipment, further increasing the difficulty of track beam testing. Therefore, in this embodiment, a shielding cover 7 is fixedly installed on the support frame 2, and the distance detection mechanism 5 is placed inside the shielding cover 7. The shielding cover 7 is made of a ferromagnetic material with high magnetic permeability, which allows most of the magnetic induction lines of the external magnetic field to pass through the ferromagnetic material shell, effectively isolating the external magnetic field from entering and preventing external electromagnetic interference from affecting the distance detection mechanism 5. Through holes can be opened at the corresponding positions of the distance detection mechanism 5 on the shielding cover 7 to ensure that the distance detection mechanism 5 can collect data normally.

[0104] Furthermore, the support frame 2 is a frame-type support frame; at least one fixed crossbar 21 is provided inside the support frame 2, and the distance detection mechanism 5 is disposed on the fixed crossbar 21.

[0105] Specifically, in this embodiment, the support frame 2 is configured as a rectangular frame structure, fixed by multiple mutually perpendicular connecting rods. Furthermore, to further enhance the structural strength and stability of the frame, a fixed crossbar 21 is provided on the support frame 2. More specifically, the distance detection mechanism 5 and the shielding cover 7 are also mounted on the fixed crossbar 21, and the distance detection sensor 51 and the processor 52 are mounted at a certain distance from each other on the fixed crossbar 21. The distance detection mechanism 5 is located on the side closer to the second guide mechanism 42, and the processor 52 is located on the side closer to the first guide mechanism 41.

[0106] In another embodiment, when multiple distance detection sensors 51 are set, multiple corresponding fixed crossbars 21 are set, such that a distance detection sensor 51 is fixed on each fixed crossbar 21, and the two ends of the multiple fixed crossbars 21 are respectively fixed on a vertical connecting rod in the support frame 2.

[0107] Specifically, such as Figure 5 As shown, when using the above-mentioned detection device to detect the inner width of the track beam 1 at different positions in the extension direction: based on the setting position of the guide wheel of the permanent magnet levitation train, the friction position between the guide wheel and the web plate 101 of the track beam 1 is determined, and the height at which the inner width needs to be detected is determined; the height of the support frame 2 is adjusted using the height adjustment mechanism 6; after the support frame 2 is adjusted to the preset position, the entire device is installed inside the track beam 1; the distance detection mechanism is driven by the walking mechanism 3 to determine the inner width of the track beam at different positions in the extension direction at the modified height.

[0108] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0109] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0110] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A suspended permanent magnet maglev track beam inner width detection device, wherein the track beam (1) is an inverted U-shaped box girder with an internal accommodating space, and permanent magnet tracks (11) are arranged opposite each other on the web plate (101) of the track beam (1) along the extension direction of the track beam (1), characterized in that, The device includes: Support frame (2); The walking mechanism (3) is located at the bottom of the support frame (2). The walking mechanism (3) can walk along the permanent magnet track (11), so that the support frame (2) can move in the inner accommodating space of the track beam (1) along the extension direction of the track beam (1). The guide mechanism (4) is provided on two opposite sides of the support frame (2) and contacts the two side webs (101) of the track beam (1); Distance detection mechanism (5) is set on the support frame (2) and is used to obtain the inner width of the track beam (1) at different positions in the extension direction during the process of the walking mechanism (3) walking along the permanent magnet track (11); The guiding mechanism (4) includes: The first guide mechanism (41) is fixedly installed on one side of the support frame (2) and contacts one side web plate (101) of the track beam (1); The second guide mechanism (42) is telescopically mounted on the other side of the support frame (2) and contacts the other side web plate (101) of the track beam (1); The first guiding mechanism (41) includes: Multiple first rollers (411) are spaced apart on one side of the support frame (2) by support rods (412) and contact one side web plate (101) of the track beam (1); The second guiding mechanism (42) includes: Multiple second rollers (421) are spaced apart on one side of the support frame (2) by spring assembly (422) and contact one side web plate (101) of the track beam (1); Distance detection agency (5) includes: Multiple distance detection sensors (51) are set on the support frame (2) at different heights to obtain distance detection signals between the sensor and the web 101 of the track beam 1 at different heights. The setting height of the multiple distance detection sensors 51 is determined by the contact position between the guide wheel of the maglev train and the web 101 of the track beam 1. The device further includes: A shield (7) is set on a support frame (2), and the distance detection mechanism (5) is located inside the shield (7). The shield (7) is used to shield external magnetic fields.

2. The device for detecting the inner width of a suspended permanent magnet maglev track beam according to claim 1, characterized in that, The device further includes: A height adjustment mechanism (6) is provided between the support frame (2) and the walking mechanism (3) for adjusting the height of the support frame (2) relative to the walking mechanism (3).

3. The suspended permanent magnet maglev track beam inner width detection device according to claim 2, characterized in that, The height adjustment mechanism (6) includes: Multiple electric cylinders are symmetrically arranged between the support frame (2) and the traveling mechanism (3). The fixed end of each electric cylinder is connected to the traveling mechanism (3), and the free end of each electric cylinder is connected to the support frame (2); or Multiple hydraulic cylinders are symmetrically arranged between the support frame (2) and the traveling mechanism (3). The fixed end of the hydraulic cylinder is connected to the traveling mechanism (3), and the free end of the hydraulic cylinder is connected to the support frame (2).

4. The device for detecting the inner width of a suspended permanent magnet maglev track beam according to claim 1, characterized in that, The walking mechanism (3) includes: Mounting bracket (31) is used to support the support frame (2); A drive motor (32) is mounted on the mounting bracket (31) and is used to generate driving force; A set of drive wheels (33) are disposed opposite to one end of the mounting bracket (31) and connected to the drive shaft of the drive motor (32) via a reducer (34); A set of wheels is positioned opposite to the other end of the mounting bracket (31).

5. The device for detecting the inner width of a suspended permanent magnet maglev track beam according to claim 1, characterized in that, The distance detection mechanism (5) also includes: The processor (52) is mounted on the support frame (2) and is communicatively connected to the distance detection sensor (51) to determine the inner width of the track beam (1) based on the received distance detection signal.

6. The device for detecting the inner width of a suspended permanent magnet maglev track beam according to claim 1, characterized in that, The support frame (2) is a frame-type support frame; at least one fixed crossbar (21) is provided inside the support frame (2), and the distance detection mechanism (5) is provided on the fixed crossbar (21).

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