A track geometry detection device
By designing a track geometry parameter detection device with multi-degree-of-freedom adjustment, the problem of poor environmental adaptability of existing devices has been solved, the detection accuracy and reliability have been improved, it can adapt to different track types and reduce the difficulty of equipment maintenance, and achieve efficient and economical detection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA RAILWAY HI TECH IND CORP LTD
- Filing Date
- 2026-05-14
- Publication Date
- 2026-06-16
AI Technical Summary
Existing track geometry parameter detection devices have poor environmental adaptability, resulting in low accuracy of measurement results.
A detection device is designed, comprising a vehicle body, a running mechanism, a line structured light sensor, and a sensor mounting assembly. The vehicle body is composed of a frame with a preset cross-section profile and mounting grooves on the frame. The wheels of the running mechanism are adjustable. The sensor mounting assembly has multi-degree-of-freedom adjustment functions, including lateral position, height, and rotation angle adjustment.
It improves the versatility and detection accuracy of the device, enhances its adaptability to complex working conditions, lowers the threshold for equipment deployment and maintenance, and achieves efficient and economical integrated detection.
Smart Images
Figure CN122211432A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rail transit inspection technology, and in particular to a track geometry parameter detection device. Background Technology
[0002] As the fundamental load-bearing and guiding structure for train operation, the precision and stability of railway track geometry are prerequisites for ensuring train safety, improving passenger comfort, extending equipment life, and achieving high-speed, heavy-haul transportation. Track geometry primarily refers to the relative position and shape of the rails in space, with core parameters including: gauge, superelevation, elevation, alignment, triangular dents (torsion), and rail cross-sectional wear. These parameters collectively define the spatial geometry of the track. Any deviation exceeding the allowable range can lead to decreased train stability, abnormally increased wheel-rail forces, and even serious safety accidents such as derailment. Therefore, track geometry detection refers to the continuous, accurate, and efficient measurement, analysis, and evaluation of these geometric parameters using specialized equipment and techniques. Its fundamental purpose is to promptly detect track defects, guide maintenance operations, and ensure that the track condition remains within safety standards, making it a core aspect of railway infrastructure maintenance. The significance of track geometry detection is profound, primarily in the following aspects: First, it is a crucial guarantee for train safety. Through periodic inspections, potential safety hazards can be warned and eliminated, preventing accidents. Secondly, it serves as the basis for scientific maintenance decisions. Based on the testing data, precise maintenance plans can be formulated, enabling a shift from "periodic maintenance" to "condition-based maintenance," thereby optimizing resource allocation and reducing total life-cycle costs. Furthermore, for high-speed railways, optimal geometric smoothness is a key technical indicator for achieving high comfort and stability, and testing technology directly supports the operational quality of high-speed railways. Finally, the long-term accumulation of testing data provides a valuable data foundation for the study of track degradation patterns and track design optimization.
[0003] In related technologies, existing inspection methods mainly rely on manual measurement using tools such as track gauges and levels, which has limitations such as low efficiency, strong data subjectivity, and disruption to normal train operation. Therefore, to improve inspection efficiency, with the advancement of inspection technology, the mainstream technology has now developed into automated inspection methods based on optical measurement. Among them, line laser 3D scanning technology has become an advanced technological development direction in this field due to its significant advantages such as high precision, high speed, and non-contact measurement. This technology projects a line laser beam onto the track surface, uses a camera to collect images of the deformation of the laser line on the track contour, and then combines the principles of triangulation to reconstruct the three-dimensional shape of the track, thereby calculating various geometric parameters.
[0004] However, current track geometry parameter detection devices have the following technical problems:
[0005] Existing track geometry parameter detection devices have poor environmental adaptability, resulting in low accuracy of measurement results. Summary of the Invention
[0006] Therefore, it is necessary to provide a track geometry parameter detection device that can improve the environmental adaptability and anti-interference ability of track geometry parameter detection, and improve the accuracy of geometry parameter detection.
[0007] This application provides a track geometry parameter detection device, including:
[0008] The vehicle body is composed of a frame with a preset cross-section profile, and the frame is provided with at least one mounting groove along the length direction.
[0009] The traveling mechanism includes at least one pair of wheels, which are slidably mounted in the mounting groove at the bottom of the frame via a first connecting assembly, so that the wheel track between the wheels is adjustable;
[0010] A line structured light sensor is used to project linear light onto the track surface and acquire images of the track contour.
[0011] A sensor mounting assembly for mounting the line structured light sensor onto the frame;
[0012] The sensor mounting assembly is provided with a first adjustment mechanism between itself and the frame, which is used to adjust the position of the line structured light sensor along the lateral direction of the frame; the sensor mounting assembly itself is provided with a second adjustment mechanism, which is used to adjust the position of the line structured light sensor in the height direction and the rotation angle around its optical axis.
[0013] In one embodiment, the sensor mounting assembly includes:
[0014] The base is connected to the frame via the first adjustment mechanism;
[0015] A clamping element, movably connected to the base, is used to clamp and fix the wire structured optical sensor;
[0016] The second adjustment mechanism is disposed between the base and the clamping member, and includes at least one manual locking member. By operating the manual locking member, the clamping member can be locked relative to the base in the height direction and the rotation direction.
[0017] In one embodiment, the base is L-shaped, one side of the base is connected to the frame, and the other side of the base is provided with the clamping member;
[0018] The clamping component is a pressure plate adapted to the outer contour of the linear structured light sensor.
[0019] In one embodiment, the first adjustment mechanism includes a slider or slider nut that mates with the mounting groove, thereby achieving relative fixation or sliding between the sensor mounting assembly and the frame by tightening or loosening the first fastener.
[0020] In one embodiment, the first connecting component includes a slider or slider nut that mates with the mounting groove, thereby fixing or adjusting the mounting position of the wheel within the mounting groove by tightening or loosening a second fastener.
[0021] In one embodiment, the preset cross-section profile is an industrial aluminum profile with the mounting groove on its surface, and the frame is assembled by multiple corner connectors.
[0022] In one embodiment, the device further includes a ranging element mounted on the traveling mechanism for detecting the travel distance of the device.
[0023] In one embodiment, the line structured light sensor is a laser profile scanner based on triangulation.
[0024] In one embodiment, the mounting groove is a T-groove, a dovetail groove, or a U-groove.
[0025] In one embodiment, the manual locking element is a wing nut, a star-shaped handwheel, or a quick-clamping handle.
[0026] The above-described track geometry parameter detection device, derived from the technical features in the embodiments, can achieve the following beneficial effects to address the technical problems raised in the background art:
[0027] This application provides a track geometry parameter detection device, including a vehicle body, a running mechanism, a line structured light sensor, and a sensor mounting assembly. The vehicle body is constructed from a frame with a preset cross-sectional profile, and the frame has at least one mounting groove along its length. The running mechanism includes at least one pair of wheels, which are slidably mounted in the mounting groove at the bottom of the frame via a first connecting assembly, allowing for adjustable wheel spacing. The line structured light sensor projects linear light onto the track surface and acquires a track contour image. The sensor mounting assembly mounts the line structured light sensor onto the frame. A first adjustment mechanism is provided between the sensor mounting assembly and the frame to adjust the position of the line structured light sensor laterally along the frame. The sensor mounting assembly itself has a second adjustment mechanism to adjust the position of the line structured light sensor in the height direction and its rotation angle around its optical axis. In implementation, the cooperation between the mounting groove on the vehicle frame and the first connecting assembly enables stepless or stepped adjustment of the wheel spacing, helping the same device to adapt to tracks with different gauges and improving the device's versatility. The mounting assembly, specifically designed for line structured light sensors, integrates multi-degree-of-freedom adjustment capabilities. Specifically, the first adjustment mechanism allows for flexible lateral positioning of the sensor within the vehicle body to adapt to different track types; the second adjustment mechanism enables precise adjustment of the sensor height and projection angle. This combined adjustment mechanism allows operators to quickly optimize the sensor's spatial pose and laser projection angle based on the on-site track type, lighting conditions, and testing requirements, ensuring the acquisition of clear, complete, and high signal-to-noise ratio 3D images of the track contour from the outset. Thus, while improving detection accuracy and reliability, the device significantly enhances its adaptability to complex working conditions and lowers the barriers to deployment, calibration, and maintenance, achieving efficient and economical integrated testing. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0029] Figure 1 This is a schematic diagram of the assembly structure of a track geometry parameter detection device according to an embodiment of this application;
[0030] Figure 2 This is a schematic diagram of the assembly structure of a track geometry parameter detection device from another perspective in an embodiment of this application;
[0031] Figure 3This is a schematic diagram of the sensor mounting assembly in an embodiment of this application;
[0032] Figure 4 This is a schematic diagram of the sensor mounting assembly in an embodiment of this application.
[0033] Explanation of reference numerals in the attached drawings: 1. Sensor mounting assembly; 2. Linear structured light sensor; 3. Vehicle body; 4. Running gear; 5. Distance measuring element. Detailed Implementation
[0034] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0036] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
[0037] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.
[0038] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.
[0039] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.
[0040] This application was made by the inventor based on his understanding and research into the following issues:
[0041] In related technologies, existing inspection methods mainly rely on manual measurement using tools such as track gauges and levels, which has limitations such as low efficiency, strong data subjectivity, and disruption to normal train operation. Therefore, to improve inspection efficiency, with the advancement of inspection technology, the mainstream technology has now developed into automated inspection methods based on optical measurement. Among them, line laser 3D scanning technology has become an advanced technological development direction in this field due to its significant advantages such as high precision, high speed, and non-contact measurement. This technology projects a line laser beam onto the track surface, uses a camera to collect images of the deformation of the laser line on the track contour, and then combines the principles of triangulation to reconstruct the three-dimensional shape of the track, thereby calculating various geometric parameters.
[0042] However, current track geometry parameter detection devices have the following technical problems:
[0043] Existing track geometry parameter detection devices have poor environmental adaptability, resulting in low accuracy of measurement results.
[0044] Specifically, existing line laser sensors in inspection devices are typically fixedly installed, making it difficult to quickly adapt to different track types (such as standard railway rails with different gauges like 60kg / m and 50kg / m, as well as special cross-section rails like grooved rails). For specific rail types, a fixed laser projection angle may not fully cover key inspection areas such as the rail head and rail web, leading to missing contour data or reduced accuracy. Track inspection environments are complex and variable, often involving oil stains, corrosion, rain and snow, and strong ambient light interference. Fixed sensors cannot adjust the laser projection angle to avoid reflective areas or highlight effective features, resulting in low signal-to-noise ratios in the acquired images and severely impacting the accuracy of measurement results. After long-term use or transportation, the optical measurement system may experience slight shifts due to vibration and impact. The fixed structure makes rapid on-site calibration difficult, often requiring factory returns or complex adjustments using specialized tools, affecting the continuity and efficiency of inspection work. Existing specialized testing equipment is usually complex in design, has high manufacturing costs, and long production cycles, making it difficult to meet the needs of rapid and flexible on-site testing. In particular, it cannot easily verify the accuracy and optimize the position of 3D line laser measuring instruments.
[0045] To address the aforementioned issues, this application provides a device for detecting track geometry parameters.
[0046] This application provides a track geometry parameter detection device that can, as follows: Figure 1 and Figure 2 As shown, it includes: vehicle body, running gear, line structured light sensor and sensor mounting assembly.
[0047] The vehicle body is composed of a frame with a pre-defined cross-section profile, and the frame has at least one mounting groove along its length.
[0048] The traveling mechanism includes at least one pair of wheels, which are slidably mounted in the mounting groove at the bottom of the frame via a first connecting component, so that the wheel track between the wheels is adjustable.
[0049] Among them, the line structured light sensor is used to project linear light onto the track surface and acquire track contour images.
[0050] The sensor mounting assembly is used to mount the line structured light sensor onto the frame.
[0051] The sensor mounting assembly is provided with a first adjustment mechanism between itself and the frame, which is used to adjust the position of the line structured light sensor along the lateral direction of the frame; the sensor mounting assembly itself is provided with a second adjustment mechanism, which is used to adjust the position of the line structured light sensor in the height direction and the rotation angle around its optical axis.
[0052] By implementing the above-described track geometry parameter detection device, the following beneficial effects can be achieved:
[0053] This application provides a track geometry parameter detection device, including a vehicle body, a running mechanism, a line structured light sensor, and a sensor mounting assembly. The vehicle body is constructed from a frame with a preset cross-sectional profile, and the frame has at least one mounting groove along its length. The running mechanism includes at least one pair of wheels, which are slidably mounted in the mounting groove at the bottom of the frame via a first connecting assembly, allowing for adjustable wheel spacing. The line structured light sensor projects linear light onto the track surface and acquires a track contour image. The sensor mounting assembly mounts the line structured light sensor onto the frame. A first adjustment mechanism is provided between the sensor mounting assembly and the frame to adjust the position of the line structured light sensor laterally along the frame. The sensor mounting assembly itself has a second adjustment mechanism to adjust the position of the line structured light sensor in the height direction and its rotation angle around its optical axis. In implementation, the cooperation between the mounting groove on the vehicle frame and the first connecting assembly enables stepless or stepped adjustment of the wheel spacing, helping the same device to adapt to tracks with different gauges and improving the device's versatility. The mounting assembly, specifically designed for line structured light sensors, integrates multi-degree-of-freedom adjustment capabilities. Specifically, the first adjustment mechanism allows for flexible lateral positioning of the sensor within the vehicle body to adapt to different track types; the second adjustment mechanism enables precise adjustment of the sensor height and projection angle. This combined adjustment mechanism allows operators to quickly optimize the sensor's spatial pose and laser projection angle based on the on-site track type, lighting conditions, and testing requirements, ensuring the acquisition of clear, complete, and high signal-to-noise ratio 3D images of the track contour from the outset. Thus, while improving detection accuracy and reliability, the device significantly enhances its adaptability to complex working conditions and lowers the barriers to deployment, calibration, and maintenance, achieving efficient and economical integrated testing.
[0054] In one embodiment, it can be as follows Figure 1 and Figure 3 As shown, the sensor mounting assembly includes:
[0055] The base is connected to the frame via the first adjustment mechanism;
[0056] A clamping element, movably connected to the base, is used to clamp and fix the wire structured optical sensor;
[0057] The second adjustment mechanism is disposed between the base and the clamping member, and includes at least one manual locking member. By operating the manual locking member, the clamping member can be locked relative to the base in the height direction and the rotation direction.
[0058] In this embodiment, the movable clamping component, in conjunction with a second adjustment mechanism equipped with a manual locking component, enables integrated and rapid fine-tuning of the height and angle of the line structured light sensor. This design is not only intuitive and convenient to operate, facilitating on-site optimization based on track type or ambient light conditions, but also features a compact structure and reliable locking, effectively ensuring the sensor's pose stability during dynamic detection, thereby guaranteeing the continuity and accuracy of measurement data.
[0059] In one embodiment, it can be as follows Figure 3 and Figure 4 As shown, the base is L-shaped, one side of the base is connected to the frame, and the other side of the base is provided with the clamping member;
[0060] The clamping component is a pressure plate adapted to the outer contour of the linear structured light sensor.
[0061] In this embodiment, the L-shaped base provides a stable and extended mounting surface for the sensor, facilitating clamping and adjustment from the side. The pressure plate, adapted to the sensor's shape, provides uniform and reliable clamping force, effectively preventing the sensor from shifting or rotating during vibration and ensuring the stability of its optical central axis position. This simple yet ingenious structure achieves stable installation while minimizing obstruction and interference to the sensor's own structure and optical field of view.
[0062] In one embodiment, the first adjustment mechanism includes a slider or slider nut that mates with the mounting groove, thereby achieving relative fixation or sliding between the sensor mounting assembly and the frame by tightening or loosening the first fastener.
[0063] In this embodiment, the key component of the first adjustment mechanism is the slider or slider nut that mates with the mounting groove. This structure enables a sliding connection and precise positioning between the sensor mounting assembly and the vehicle frame. By simply tightening or loosening the first fastener, the assembly can slide smoothly along the groove to find the optimal lateral position during adjustment, and then be quickly and securely locked after the position is determined. This design integrates linear stepless adjustment with a stable locking function, making the lateral positioning adjustment process both flexible and efficient, while ensuring that the sensor does not shift laterally during detection operations, thus guaranteeing the stability of the measurement reference.
[0064] In one embodiment, the first connecting component includes a slider or slider nut that mates with the mounting groove, thereby fixing or adjusting the mounting position of the wheel within the mounting groove by tightening or loosening a second fastener.
[0065] In this embodiment, a slider or slider nut that mates with the mounting groove is used as the first connecting component, combined with a second fastener, providing the wheel with continuous sliding and precise positioning capabilities within the groove. This allows operators to easily and steplessly adjust the distance between the left and right wheels without the need for complex tools, simply by tightening or loosening the second fastener, thus quickly adapting the device to tracks with different standard or non-standard gauges. This design not only greatly enhances the versatility of the equipment, but its adjustment process is also intuitive and reliable, ensuring stable support and smooth operation of the traveling mechanism under different track gauges.
[0066] In one embodiment, the preset cross-section profile is an industrial aluminum profile with the mounting groove on its surface, and the frame is assembled by multiple corner connectors.
[0067] In this embodiment, the preferred materials and connection methods for the vehicle body frame are specified. Industrial aluminum profiles with pre-fabricated mounting grooves are selected and used in combination with standardized corner connectors, enabling rapid modular assembly of the vehicle body. This structure is not only easy to process and assemble flexibly, but also lightweight overall. Furthermore, the pre-fabricated grooves provide a unified and reliable installation and adjustment benchmark for all functional modules (such as sensor mounting components and wheels), eliminating the need for secondary processing. This significantly reduces manufacturing costs and assembly difficulty, and improves the structural consistency, maintainability, and expandability of the equipment.
[0068] In one embodiment, the device further includes a ranging element mounted on the traveling mechanism for detecting the travel distance of the device.
[0069] In this embodiment, the ranging element is an essential functional component of the device. Integrated into the traveling mechanism, the ranging element synchronously and accurately records the device's travel mileage along the track. After synchronizing this mileage data with the contour image data acquired by the line structured light sensor in time or position, discrete cross-sectional contours can be precisely mapped onto continuous track alignments. This enables accurate calculation and evaluation of the continuous changes in track geometric parameters (such as gauge, elevation, and level) along the mileage direction, greatly improving the spatial positioning accuracy and systematic analysis capabilities of the detection data.
[0070] In one embodiment, the line structured light sensor is a laser profile scanner based on triangulation.
[0071] This embodiment clarifies the specific type of the core measurement component. A laser profile scanner based on triangulation is used as the line structured light sensor, whose working principle is mature and stable. It emits a laser line and receives the deformed profile formed on the track surface, and through precise calculation, can quickly reconstruct a high-precision three-dimensional morphology of the track cross-section. This provides a reliable, high-resolution raw data foundation for subsequent calculations of key geometric parameters such as track gauge, wear, and levelness, and is the core guarantee for achieving non-contact, high-precision automated detection.
[0072] In one embodiment, the mounting groove is a T-groove, a dovetail groove, or a U-groove.
[0073] In this embodiment, the connection structure has multiple specific implementation methods. Different types of implementation methods not only provide reliable sliding tracks and bearing surfaces for connecting parts such as sliders and nuts, but their unique cross-sectional shapes can also effectively prevent the connecting parts from accidentally coming out of the groove, and facilitate loading, unloading, and position adjustment from the groove opening. By adopting this kind of universal groove type, the modular design of the entire device can be realized. All components (such as wheels and sensor mounting bases) can be flexibly and stably installed and adjusted based on the same benchmark, greatly improving the assembly convenience, structural rigidity, and maintainability of the equipment.
[0074] In one embodiment, the manual locking element is a wing nut, a star-shaped handwheel, or a quick-clamping handle.
[0075] In one most specific embodiment, a track geometry parameter detection device is provided, which can, as in... Figure 1 and Figure 2 As shown.
[0076] For example, the vehicle body uses industrial aluminum profiles (such as 8080 or 4040 specifications) to build a frame structure, which is assembled using angle bracket connectors. T-slots on the aluminum profile surface engage with T-nuts, facilitating the installation and position adjustment of various functional modules. This design not only ensures structural strength but also achieves a high degree of modularity and adjustability. The fixture employs an innovative combination structure of an L-shaped base plate and a straight pressure plate. The L-shaped plate is fixed to the aluminum profile, and the tail of the straight pressure plate has a threaded adjustment rod, which is quickly locked using washers and wing bolts. Loosening the wing bolts adjusts the sensor's tilt angle and vertical position, while tightening them provides reliable fixation. The wheels are installed at the bottom of the aluminum profile vehicle body via angle bracket connectors and T-nuts. By loosening the fasteners, the wheel mounting position can be moved along the T-slots of the aluminum profile, enabling continuous or graded adjustment of the wheel track, allowing one set of equipment to adapt to the detection needs of various track gauges. The sensor mounting assembly, in conjunction with the first adjustment mechanism, achieves three degrees of freedom for sensor adjustment, specifically:
[0077] Left and right adjustment: By loosening the T-nuts connecting the clamps to the aluminum profiles, the entire sensor assembly can be slid laterally along the vehicle body;
[0078] Vertical adjustment: By adjusting the butterfly bolt, the vertical installation height of the sensor can be changed;
[0079] Rotation adjustment: By loosening the butterfly bolt, the sensor can be rotated around its optical central axis, changing the projection angle of the laser line.
[0080] This multi-degree-of-freedom adjustment mechanism allows operators to quickly and accurately adjust the 3D line laser measuring instrument to the optimal working position and posture according to specific testing needs, laying the foundation for high-quality data acquisition.
[0081] It is understood that the above-mentioned track geometry parameter detection device can also take other forms, and is not limited to the forms mentioned in the above embodiments, as long as it can achieve the functions of improving the environmental adaptability and anti-interference ability of track geometry parameter detection, and improving the accuracy of geometry parameter detection.
[0082] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.
[0083] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0084] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A device for detecting track geometry parameters, characterized in that, include: The vehicle body is composed of a frame with a preset cross-section profile, and the frame is provided with at least one mounting groove along the length direction. The traveling mechanism includes at least one pair of wheels, which are slidably mounted in the mounting groove at the bottom of the frame via a first connecting assembly, so that the wheel track between the wheels is adjustable; A line structured light sensor is used to project linear light onto the track surface and acquire images of the track contour. A sensor mounting assembly for mounting the line structured light sensor onto the frame; The sensor mounting assembly and the frame are provided with a first adjustment mechanism for adjusting the position of the line structured light sensor along the lateral direction of the frame; the sensor mounting assembly itself is provided with a second adjustment mechanism for adjusting the position of the line structured light sensor in the height direction and adjusting the rotation angle around its optical axis.
2. The track geometry parameter detection device according to claim 1, characterized in that, The sensor mounting assembly includes: The base is connected to the frame via the first adjustment mechanism; A clamping element, movably connected to the base, is used to clamp and fix the wire structured optical sensor; The second adjustment mechanism is disposed between the base and the clamping member, and includes at least one manual locking member. By operating the manual locking member, the clamping member can be locked relative to the base in the height direction and the rotation direction.
3. The track geometry parameter detection device according to claim 2, characterized in that: The base is L-shaped, one side of the base is connected to the frame, and the other side of the base is provided with the clamping member; The clamping component is a pressure plate adapted to the outer contour of the linear structured light sensor.
4. The track geometry parameter detection device according to claim 2, characterized in that, The first adjustment mechanism includes a slider or slider nut that cooperates with the mounting groove, and the relative fixation or sliding between the sensor mounting assembly and the frame is achieved by tightening or loosening the first fastener.
5. The track geometry parameter detection device according to claim 1, characterized in that, The first connecting component includes a slider or slider nut that mates with the mounting groove, and the mounting position of the wheel within the mounting groove is fixed or adjusted by tightening or loosening the second fastener.
6. A track geometry parameter detection device according to any one of claims 1 to 5, characterized in that, The preset cross-section profile is an industrial aluminum profile with the mounting groove on its surface, and the frame is assembled by multiple corner connectors.
7. The track geometry parameter detection device according to claim 1, characterized in that, The device also includes a ranging element mounted on the traveling mechanism for detecting the traveling distance of the device.
8. The track geometry parameter detection device according to claim 1, characterized in that, The line structured light sensor is a laser profile scanner based on triangulation.
9. The track geometry parameter detection device according to claim 1, characterized in that, The mounting groove is a T-groove, dovetail groove, or U-groove.
10. The track geometry parameter detection device according to claim 1, characterized in that, The manual locking component is a wing nut, a star-shaped handwheel, or a quick-clamping handle.