Flexible contact line abrasion continuous measuring device

Abstract

The utility model belongs to the field of contact line measurement, particularly relates to a continuous measurement device for abrasion of a flexible contact line, and aims to solve the problems of high safety risk, high cost, single measurement data and poor adaptability of the conventional contact line abrasion detection method. The device comprises a guiding device and a measuring device moving along the guiding device. The measuring device comprises a line laser, a 3D scanning camera and a laser scanning radar. The 3D scanning camera is in driving connection with the rotating device, the rotating device moves along the guiding device, and the rotating device is used for controlling the swing angle of the 3D scanning camera so as to change the measurement range; the laser scanning radar is used for detecting the height difference between the laser scanning radar and the contact line so as to adjust the distance between the line laser and the 3D scanning camera and the swing angle of the 3D scanning camera. The contact line abrasion detection device adopts a non-contact measurement technology, has the advantages of being high in safety, comprehensive in data coverage rate, low in cost, low in installation requirement, high in precision and the like, and effectively improves the efficiency and the reliability of contact line abrasion detection.

Description

Technical Field

[0001] The utility model belongs to the field of contact line measurement, and in particular relates to a flexible contact line wear continuous measurement device. Background Art

[0002] With the rapid development of rail transportation, the contact wire, as a key component of power transmission, is directly related to the safety and reliability of train operation. Therefore, the wear monitoring of the contact wire has become one of the important links to ensure the safety of railway transportation. At present, the detection of contact wire wear mainly adopts two methods:

[0003] Traditional manual measurement: This method is similar to using handheld measuring tools such as vernier calipers. The operator needs to use an insulating operating rod to lift the measuring equipment to the contact line, measure the remaining height of the contact line by direct contact, and calculate the wear amount based on the original size. The advantages of this method are low cost, simple operation and high measurement accuracy, which is why it is more common in practical applications. However, it also has significant problems: First, there are greater safety risks. Since the equipment needs to be lifted to a high altitude for operation, once the insulating rod fails or is improperly operated, it is very likely to cause a safety accident; second, the measurement data is obviously limited. Only data from a limited number of points can be obtained, which cannot fully and accurately reflect the overall wear condition of the contact line, which may result in potential wear diseases not being discovered and treated in a timely manner.

[0004] Non-contact laser scanning: As an emerging detection method, non-contact laser scanning technology can efficiently and accurately obtain three-dimensional morphological information of the contact line surface by fixing the laser scanner on a dedicated detection vehicle and using continuous scanning while the vehicle is driving. Compared with traditional methods, laser scanning not only greatly improves the detection efficiency and coverage, but also provides richer and more detailed data support, which helps to identify and warn of potential safety hazards earlier. However, this technology also faces some challenges: on the one hand, the high cost limits its widespread application, especially for developing countries, where the high cost of equipment procurement has become a major obstacle; on the other hand, since most commercial laser scanning equipment is foreign products, its factory settings are often difficult to meet the specific needs of railway systems in different countries and regions (such as the difference in height between my country's high-speed railways and existing lines). This not only affects the adaptability and flexibility of the equipment, but also may lead to a decrease in measurement accuracy.

[0005] Based on this, the utility model proposes a flexible contact wire wear continuous measurement device. Utility Model Content

[0006] In order to solve the above-mentioned problems in the prior art, namely, the existing contact wire wear detection methods have high safety risks, high costs, single measurement data and poor adaptability, the utility model provides a flexible contact wire wear continuous measurement device, which is installed on a platform on the top of the inspection vehicle and includes a guide device and a measuring device that moves along the guide device;

[0007] The measuring device includes a line laser, a 3D scanning camera and a laser scanning radar;

[0008] The 3D scanning camera is drivingly connected to a rotating device, the rotating device moves along the guide device, and the rotating device is used to control the swing angle of the 3D scanning camera to change the measurement range;

[0009] The laser scanning radar is used to detect the height difference between it and the contact line to adjust the distance between the line laser and the 3D scanning camera and the swing angle of the 3D scanning camera.

[0010] In some preferred embodiments, the laser scanning radar is disposed on a side of the line laser away from the 3D scanning camera.

[0011] In some preferred embodiments, the guide device includes a slide rail, a slider, and a driving device;

[0012] The line laser and the 3D scanning camera are respectively mounted on two different sliders, the sliders are configured on and move along the slide rail, and the slide rail is mounted on the platform;

[0013] The driving device is fixed on the slide rail and is used for driving the slider to move along the slide rail.

[0014] In some preferred embodiments, the measuring device, the driving device and the rotating device are all electrically connected to a control module, and the control module is mounted on the platform;

[0015] The control module is used to control the opening and closing of the measuring device, the driving parameters of the driving device and the working parameters of the rotating device.

[0016] In some preferred embodiments, the control module has a built-in power supply module, and the power supply module is used to supply power to the measuring device, the driving device and the rotating device.

[0017] In some preferred embodiments, a rotation speed sensor is installed on the inspection vehicle, and the rotation speed sensor is electrically connected to the control module.

[0018] In some preferred embodiments, the rotation speed sensor is electrically connected to the control module via a first signal line.

[0019] In some preferred embodiments, the control module is connected to a computer via a second signal line, and the computer is used to process the data acquired by the measuring device to obtain wear data.

[0020] In some preferred embodiments, the slide rail and the control module are both mounted on a mounting base, and the mounting base is mounted on a platform.

[0021] In some preferred embodiments, the line laser comprises a Powell prism.

[0022] Beneficial effects of the utility model:

[0023] Safe and reliable: The use of non-contact measurement technology effectively avoids the risks of high-altitude operations in traditional manual measurement methods. It neither causes physical damage to the contact line nor safety accidents caused by human operational errors, greatly improving the safety of detection work.

[0024] High data coverage: During operation, the inspection vehicle continuously scans the entire contact wire area, enabling comprehensive measurement. This method not only effectively detects wear and tear points but also significantly reduces the risk of contact wire breakage, providing a solid guarantee for railway transportation safety.

[0025] Lower Cost: The device features a split design, with 80% of its main components made from domestically produced, standard parts. This not only reduces initial procurement costs but also simplifies subsequent maintenance and replacement. Even if components become aged or damaged, they can be quickly and easily replaced, significantly improving the device's cost-effectiveness and practicality.

[0026] Low installation requirements and high precision: The device features an adjustable design, allowing it to be easily mounted on the platform on the roof of the inspection vehicle and begin operation. Uniquely, it automatically adjusts the angle of the 3D scanning camera and the position of the line laser based on the actual height of the contact line, enabling dynamic adjustment of the inspection range. This feature resolves the issue of inconsistent conductor heights across different lines while maintaining extremely high resolution and accuracy within a narrow measurement range, ensuring data accuracy and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 This is a front view of a flexible contact wire wear continuous measuring device of the utility model;

[0029] Figure 2This is a top view of a flexible contact wire wear continuous measurement device of the utility model;

[0030] Figure 3 It is a partial schematic diagram of a 3D scanning camera in a flexible contact wire wear continuous measurement device of the present invention.

[0031] In the figure: 1. Platform; 2. Mounting base; 3. Line laser; 4. Slide rail; 5. Control module; 6. Lens; 7. Rotation device; 8. 3D scanning camera; 9. Second signal line; 10. First signal line; 11. Laser scanning radar. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only portions relevant to the relevant utility model are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] like Figure 1-Figure 3 As shown, the utility model provides a flexible contact wire wear continuous measuring device, which is installed on a platform 1 on the top of the inspection vehicle and includes a guide device and a measuring device moving along the guide device;

[0035] The measuring device includes a line laser 3, a 3D scanning camera 8 and a laser scanning radar 11;

[0036] The 3D scanning camera 8 is drivingly connected to the rotating device 7, and the rotating device 7 moves along the guide device. The rotating device 7 is used to control the swing angle of the 3D scanning camera 8 to change the measurement range;

[0037] The laser scanning radar 11 is used to detect the height difference between it and the contact line to adjust the distance between the line laser 3 and the 3D scanning camera 8 and the swing angle of the 3D scanning camera 8 .

[0038] The platform 1 is mounted on the top of the inspection vehicle and serves as the foundation of the entire measuring device. The guide device is used to carry and guide the line laser 3 and the 3D scanning camera 8 to move along the contact line direction.

[0039] As a further explanation of the present invention, the guide device includes a slide rail 4, a slider and a drive device;

[0040] The line laser 3 and the 3D scanning camera 8 are respectively mounted on two different sliders, the sliders are configured on and move along the slide rail 4, and the slide rail 4 is mounted on the platform 1;

[0041] The driving device is fixed on the slide rail 4 and is used to drive the slider to move along the slide rail 4.

[0042] The laser scanning radar 11 is disposed on a side of the line laser 3 away from the 3D scanning camera 8 .

[0043] In this embodiment, the line laser 3 is fixed to the slide rail 4 via a slider. A Powell prism is used to convert the collimated beam into a uniformly distributed one-dimensional laser line, which is then irradiated onto the contact line to form a light band. The 3D scanning camera 8 captures the light band image produced by the line laser and converts it into a two-dimensional cross-sectional point cloud data.

[0044] Furthermore, the slide rail 4 and the control module 5 are both mounted on a mounting base 2 , and the mounting base 2 is mounted on the platform 1 .

[0045] The slide rail 4 in this embodiment is made of high-strength aluminum alloy, offering excellent corrosion resistance and lightweight properties, making it suitable for prolonged outdoor use. It is preferably in the form of a long strip, secured to the platform 1 at both ends to ensure stability and straightness. Its length is determined by the dimensions of the inspection vehicle's top platform and the detection range of the contact line, and is typically several meters.

[0046] In this embodiment, two sliders are used, one for mounting the line laser 3 and the other for mounting the 3D scanning camera 8. These sliders are constructed of high-strength plastic or lightweight metal with a low coefficient of friction, ensuring smooth sliding. Each slider is equipped with a roller or a slide groove that fits snugly with the rail 4, ensuring smooth movement along the rail. The sliders are equipped with mounting holes or clips for securely mounting the line laser 3 and 3D scanning camera 8.

[0047] The drive device in this embodiment can be a stepper motor or a servo motor, which features high precision and fast response. The drive device is fixed to one end of the slide rail 4 and connected to the slider via a transmission mechanism such as a belt, gear, or nut-screw mechanism. The specific transmission mechanism is known in the art and can be selected by those skilled in the art based on practical circumstances. This utility model does not elaborate here. The drive device sends commands via a control system, driving the motor to precisely control the movement speed and position of the slider.

[0048] Specifically, 3D scanning camera 8 is mounted on a slide via a rotating mechanism 7. Rotating mechanism 7 can be rotated to adjust the angle between 3D scanning camera 8 and slide rail 4, thereby varying the measurement range. A control system coordinates the movement of the line laser 3 and the 3D scanning camera 8's slide, ensuring they maintain an appropriate distance and relative position for optimal measurement results.

[0049] The working principle of this utility model is as follows:

[0050] initialization:

[0051] Before starting the inspection vehicle, the initial measurement range is set according to the standard parameters of the contact line, including the distance between the line laser 3 and the 3D scanning camera 8, the angle between the 3D scanning camera 8 and the slide rail 4, etc.

[0052] The driving device moves the slider to a predetermined position, ensuring that the line laser 3 and the 3D scanning camera 8 are in the initial measurement position.

[0053] Measurement process:

[0054] Laser line generation: Line laser 3 emits linear laser processed by Powell prism to form a uniformly distributed one-dimensional laser straight line, which is irradiated onto the contact line.

[0055] Image capture: The 3D scanning camera 8 captures the reflected laser light band images, which contain the shape information of the contact line surface.

[0056] Height difference measurement: The laser scanning radar 11 measures the height difference between the contact line and the measuring unit in real time. This information is used to dynamically adjust the position and angle of the measuring device.

[0057] Position and angle adjustment:

[0058] According to the height difference measured by the laser scanning radar 11 , the driving device controls the movement of the slider to adjust the distance between the line laser 3 and the 3D scanning camera 8 .

[0059] The rotating device 7 adjusts the angle between the 3D scanning camera 8 and the slide rail 4 according to the height difference, ensuring that the laser light band always falls within the field of view of the 3D scanning camera 8.

[0060] Data processing: The 3D scanning camera 8 converts the captured image into two-dimensional cross-sectional point cloud data through internal algorithms. These data reflect the morphological characteristics of the contact line surface.

[0061] Calibration and Analysis: Algorithms within the measurement unit calibrate the collected data based on real-time adjusted parameters, ensuring data accuracy and reliability. The data is then further processed to generate a wear report for the contact line.

[0062] Furthermore, the measuring device, the driving device and the rotating device 7 are all electrically connected to the control module 5, and the control module 5 is installed on the platform 1;

[0063] The control module 5 is used to control the opening and closing of the measuring device, the driving parameters of the driving device and the working parameters of the rotating device 7.

[0064] The control module 5 has a built-in power supply module, which is used to supply power to the measuring device, the driving device and the rotating device 7 .

[0065] Specifically, the control module 5 is installed on the platform 1 to facilitate electrical connection with the measuring device, the driving device and the rotating device 7. It is responsible for controlling the opening and closing of the measuring device, the driving parameters of the driving device and the working parameters of the rotating device 7.

[0066] The hardware components of the control module 5 include:

[0067] Microprocessor: Central processing unit used to execute various control algorithms and data processing tasks.

[0068] Input / output interface: used to communicate with the measuring device, driving device and rotating device 7, receive sensor data and send control signals.

[0069] Memory: used to store program code, measurement data and configuration parameters.

[0070] Communication module: supports wired or wireless communication such as Wi-Fi, Bluetooth, RS-485, etc., used for data exchange with external devices such as laptops and servers.

[0071] The power module in this embodiment can be a rechargeable lithium battery, the capacity of which is determined according to actual usage requirements to ensure long-term continuous operation. The power module provides a standard charging interface such as USB-C to facilitate user charging operations.

[0072] The power module is equipped with power management circuits: including voltage converters, voltage regulators and protection circuits, to ensure that the battery can safely and reliably power various components.

[0073] Power monitoring: Built-in power monitoring circuit, real-time monitoring of battery power, and display of power information through the control module 5.

[0074] The electrical connections of the control module are as follows:

[0075] Measuring device: The line laser 3 and the 3D scanning camera 8 are connected to the control module 5 via a second signal line 9 to receive power and control signals.

[0076] Driving device: The stepper motor or servo motor is connected to the control module 5 through a cable to receive driving parameters and control signals.

[0077] Rotating device 7: The electric turntable is connected to the control module 5 through a cable to receive working parameters and control signals.

[0078] Control logic:

[0079] Measuring device control:

[0080] On / off control: The control module 5 controls the opening and closing of the line laser 3 and the 3D scanning camera 8 according to a preset program or external command, and can also control the focal length of the lens 6 in the 3D scanning camera 8.

[0081] Parameter setting: According to the measurement requirements, the control module 5 can adjust parameters such as the power of the line laser 3 and the exposure time of the 3D scanning camera 8.

[0082] Drive control:

[0083] Position control: The control module 5 sends instructions to the drive device based on the height difference measured by the laser scanning radar 11 to adjust the position of the slider on the slide rail 4 to ensure that the line laser 3 and the 3D scanning camera 8 maintain an appropriate relative position.

[0084] Speed ​​control: The control module 5 can adjust the moving speed of the driving device according to the measurement speed requirement.

[0085] Rotating device control:

[0086] Angle control: The control module 5 sends instructions to the rotation device 7 according to the height difference and measurement requirements to adjust the tilt angle of the 3D scanning camera 8 to ensure that the laser light band always falls within the field of view of the 3D scanning camera 8.

[0087] Technological advantages

[0088] Independence: Powered by a built-in rechargeable lithium battery, it does not rely on vehicle power, which improves the independence and flexibility of the device.

[0089] Safety: It avoids the connection with the vehicle power supply, reducing electrical failures and safety hazards.

[0090] Convenience: Through the standard charging port, users can easily charge the device, extending the service life of the device.

[0091] Intelligent control: The control module 5 integrates multiple functions and can achieve precise control of the measuring device, driving device and rotating device, thereby improving the measurement accuracy and efficiency.

[0092] Furthermore, a rotation speed sensor is installed on the inspection vehicle, and the rotation speed sensor is electrically connected to the control module 5 .

[0093] Specifically, the speed sensor is installed on the axle side of the inspection vehicle and can sense the rotational speed of the wheel. Its working principle is to generate a pulse signal proportional to the wheel speed through magnetic induction or photoelectric induction.

[0094] The rotation speed sensor is electrically connected to the control module 5 via a first signal line 10 , and transmits a pulse signal to the control module 5 .

[0095] The first signal line 10 can be a shielded signal line to ensure the stability and anti-interference ability of signal transmission. One end of the first signal line 10 is connected to the speed sensor, and the other end is connected to the input interface of the control module 5.

[0096] Data processing of control module 5

[0097] Pulse signal processing:

[0098] Receiving pulse signals: The control module 5 receives the pulse signals generated by the speed sensor through the signal line 10 .

[0099] Calculate mileage: Based on the wheel diameter and the number of pulses generated per revolution, the control module 5 calculates the mileage of the inspection vehicle. The calculation formula is as follows:

[0100] Mileage = Number of pulses / Number of pulses per lap × π × Wheel diameter

[0101] Data format: The control module 5 stores the calculated mileage data in the form of digital signals.

[0102] Data transmission: The mileage data is transmitted to the measuring device via the second signal line 9.

[0103] Data acquisition and transmission of measuring devices

[0104] Data collection:

[0105] Two-dimensional cross-sectional point cloud data: The 3D scanning camera 8 captures the laser light band image and generates two-dimensional cross-sectional point cloud data through an internal algorithm.

[0106] Position data: The control module 5 transmits the mileage data to the measurement unit via the second signal line 9 , and the measurement unit associates the mileage data with the two-dimensional profile point cloud data.

[0107] Data transmission:

[0108] Second signal line 9: The measurement unit is connected to the computer installed in the carriage through the signal line 9, and transmits the collected two-dimensional profile point cloud data and the corresponding position data kilometer mark to the computer.

[0109] Computer data processing

[0110] Data reception:

[0111] Data interface: The computer receives data transmitted by the measuring device through the second signal line 9, including two-dimensional profile point cloud data and position data kilometer markers.

[0112] Data sorting and splicing:

[0113] Data sorting: The computer sorts the 2D profile point cloud data according to the mileage data to ensure the continuity and consistency of the data.

[0114] Data stitching: stitch the sorted 2D section point cloud data together to form complete contact line 3D scanning point cloud data.

[0115] Data comparison and analysis:

[0116] Comparison with original model: The computer compares the generated 3D scanning point cloud data with the original contact line 3D model to calculate the wear of the contact line.

[0117] Wear data generation: Generate detailed contact line wear data through comparative analysis, including wear depth, wear area and other information.

[0118] Data presentation and reporting:

[0119] Data visualization: The computer displays the wear data in the form of charts or three-dimensional models, which is convenient for technicians to view intuitively.

[0120] Report generation: Generate a wear report based on the analysis results, including detailed information such as wear location and wear degree, for reference by maintenance personnel.

[0121] Technological advantages

[0122] High precision: The precise coordination of the speed sensor and control module ensures the accuracy of mileage data, thereby improving the positioning accuracy of the measurement data.

[0123] Real-time: Real-time data transmission between the measuring unit and the computer ensures timely processing and analysis of data.

[0124] Automation: The entire process from data collection to data analysis is highly automated, reducing human intervention and improving work efficiency.

[0125] Reliability: Multiple data verification and redundancy design ensure the stability and reliability of the system.

[0126] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0127] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0128] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0129] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A flexible contact wire wear continuous measurement device, mounted on a platform (1) on top of a testing vehicle, characterized in that: comprising a guide device and a measuring device moving along the guide device; The measuring device comprises a line laser (3), a 3D scanning camera (8) and a laser scanning radar (11); The 3D scanning camera (8) is drivingly connected to the rotating device (7), the rotating device (7) moves along the guide device, and the rotating device (7) is used to control the swing angle of the 3D scanning camera (8) to change the measurement range; The laser scanning radar (11) is used to detect the height difference between it and the contact line to adjust the distance between the line laser (3) and the 3D scanning camera (8) and the swing angle of the 3D scanning camera (8).

2. A flexible contact wire wear continuous measurement device according to claim 1, characterized in that: The laser scanning radar (11) is arranged on a side of the line laser (3) away from the 3D scanning camera (8).

3. The flexible contact wire wear continuous measurement device according to claim 1, characterized in that: The guide device comprises a slide rail (4), a slider and a driving device; The line laser (3) and the 3D scanning camera (8) are respectively mounted on two different sliders, the sliders are arranged on and move along the slide rail (4), and the slide rail (4) is mounted on the platform (1); The driving device is fixed on the slide rail (4) and is used to drive the slider to move along the slide rail (4).

4. A flexible contact wire wear continuous measurement device according to claim 3, characterized in that: The measuring device, the driving device and the rotating device (7) are all electrically connected to the control module (5), and the control module (5) is installed on the platform (1); The control module (5) is used to control the opening and closing of the measuring device, the driving parameters of the driving device and the operating parameters of the rotating device (7).

5. The flexible contact wire wear continuous measurement device according to claim 4, characterized in that: The control module (5) has a built-in power supply module, and the power supply module is used to supply power to the measuring device, the driving device and the rotating device (7).

6. The flexible contact wire wear continuous measurement device according to claim 4, characterized in that: A rotation speed sensor is installed on the detection vehicle, and the rotation speed sensor is electrically connected to the control module (5).

7. A flexible contact wire wear continuous measurement device according to claim 6, characterized in that: The rotation speed sensor is electrically connected to the control module (5) via a first signal line (10).

8. The flexible contact wire wear continuous measurement device according to claim 7, characterized in that: The control module (5) is connected to a computer via a second signal line (9), and the computer is used to process the data acquired by the measuring device to obtain wear data.

9. The flexible contact wire wear continuous measurement device according to claim 4, characterized in that: The slide rail (4) and the control module (5) are both mounted on a mounting base (2), and the mounting base (2) is mounted on a platform (1).

10. The flexible contact wire wear continuous measurement device according to claim 1, characterized in that: The line laser (3) comprises a Powell prism.

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