Parameter detection device for rail transit contact rail

Abstract

The utility model discloses a parameter detection device for a rail transit contact rail, which comprises a main control module, a mechanical body and a special carrying platform, a first camera is carried at the far end of the mechanical body, and a second camera, a third camera, a fourth camera and a distance measuring sensor are carried at the near end of the mechanical body. The two sets of distance measuring sensors are respectively used for collecting bolt image information on the side surface and the bottom surface of an insulating bracket, collecting video information on the lower surface of a contact rail in real time and collecting height information away from the contact rail, two sides of the near end are respectively provided with a set of distance measuring sensors, and the middle position is provided with a laser contour detector; the first camera is used for collecting label image information on an insulation support housing, the laser contour detector is used for collecting contour information of the lower surface of a contact rail in real time, the two distance sensor sets are used for collecting multiple pieces of distance information meeting the side edge of an insulation support first in the running direction, and the master control module is used for receiving the distance information and sending the distance information to the camera. And controlling the first to third cameras and the distance measuring sensor to carry out acquisition.

Description

Technical Field

[0001] This utility model belongs to the technical field of rail transit testing, specifically relating to a parameter testing device for rail transit contact rails. Background Technology

[0002] The contact rail is a device that transmits electrical energy to the electric traction vehicles of subway and urban rail transit systems. Therefore, the installation accuracy and contact surface condition of the contact rail will affect the safety of train operation.

[0003] Currently, in the installation and maintenance of contact rails in rail transit, specialized measuring tools are required to measure various positional information of the contact rail on the track bed. This includes the vertical height of the contact rail perpendicular to the top plane of the running rail (guide height value H) and the distance from the center of the contact rail to the center of the running rail in the direction of the top plane of the running rail (pull-out value L). Figure 1 As shown, this contact detection method not only requires a lot of manpower and time, and the measurement accuracy is difficult to guarantee, but also the contact between the detection equipment and the contact rail during operation can easily cause wear and tear on the equipment.

[0004] Non-contact detection, primarily based on computer vision principles, is a non-contact dynamic detection method that integrates technologies such as CCD, structured light, and computer vision. It uses camera acquisition devices to capture images of the contact rail, obtain contour data, further perform digital image processing, and calculate the spatial coordinates of the contact rail. For example, patent number CN115127447A, entitled "Comprehensive Detection Device and System for Spatial Form and Position Parameters of Rail Transit Contact Rail," only uses distance detection data to determine whether the position of the insulating support has been reached. This is prone to misjudgment due to obstruction by foreign objects, which is not conducive to the accurate detection of subsequent spatial parameters. In addition, the spacing between the contact rail and the running rail varies in different regions, and the existing detection devices are of a single size, which cannot meet the actual measurement needs. Utility Model Content

[0005] This utility model provides a parameter detection device for rail contact rails in rail transit, which solves the technical problems of existing detection devices, such as limited size, poor applicability, and reliance on distance detection data to determine the position of the insulating support, which is prone to misjudgment.

[0006] This utility model can be achieved through the following technical solutions:

[0007] A parameter detection device for rail contact rails in rail transit includes a main control module and a mechanical body. One end of the mechanical body is connected to a dedicated mounting platform, and the other end extends directly below the contact rail and runs along a travel track under the drive of the dedicated mounting platform. The end closer to the dedicated mounting platform is designated as the far end, and the end closer to the contact rail as the near end. A first camera is mounted on the far end, and a second to fourth camera and a ranging sensor are mounted on the near end. A set of ranging sensors is mounted on each side of the near end. A laser profile detector is mounted in the middle of the mechanical body, and the main control module is installed inside.

[0008] The first camera is used to capture image information of the label on the insulating bracket cover; the second and third cameras are used to capture image information of the bolts on the side and bottom surfaces of the insulating bracket, respectively; the fourth camera is used to capture video information of the lower surface of the contact rail in real time; the distance sensor is used to capture height information of the distance from the contact rail; the laser profile detector is used to capture profile information of the lower surface of the contact rail in real time; and the two sets of distance sensors are used to capture multiple spacing information of the first point of contact rail contact with the side of the insulating bracket in the direction of travel.

[0009] The main control module is electrically connected to the first to fourth cameras, the laser contour detector, the distance sensor, and the two distance sensor groups. It is used to receive distance information and control the first to third cameras and the distance sensor to collect data.

[0010] Furthermore, each of the distance sensor groups is provided with two distance sensors, one of which has its detection end horizontally facing the side of the insulating bracket, and the other has its detection end angled downward toward the bottom corner of the insulating bracket.

[0011] Furthermore, the mechanical body has a bent rod-shaped structure with an internal skeleton structure. The skeleton structure includes a sheet-like main frame, on which multiple annular auxiliary frames are spaced apart, which together support the skin wrapped around the outside of the skeleton structure.

[0012] Furthermore, the sheet-like main frame adopts a hollow structure at the bending point, and the laser contour detector is set inside the hollow structure and is set obliquely upward, with a light shielding plate set directly above its detection end.

[0013] Furthermore, a left reinforcing plate and a right reinforcing plate are respectively provided on both sides near the proximal end of the sheet-like main frame. A second camera and a fourth camera are arranged between the left reinforcing plate and the sheet-like main frame, and a third camera and a ranging sensor are arranged between the right reinforcing plate and the sheet-like main frame.

[0014] The detection end of the third camera is positioned facing the bottom surface of the insulating bracket, the detection end of the second camera is positioned facing the side of the insulating bracket, and the detection ends of the fourth camera and the ranging sensor are positioned facing the lower surface of the contact rail.

[0015] A range sensor group is installed on the outer side of each of the left and right reinforcing plates.

[0016] Furthermore, a first camera is provided on the upper part of the sheet-like main frame near the far end, and main control modules are provided on both sides. The detection end of the first camera is positioned towards the label position on the cover, and a light shield is also provided directly above it.

[0017] Furthermore, four annular auxiliary frames are provided, located at the distal end, proximal end, and both sides of the bend.

[0018] Furthermore, the remote end is detachably connected to the dedicated mounting platform via an extension conversion block, and the electrical connection between the main control module, the extension conversion block, and the dedicated mounting platform is achieved through a quick-connect interface.

[0019] The beneficial technical effects of this utility model are as follows:

[0020] 1. By using a range sensor array to detect multiple spacing information on the side of the insulating bracket, instead of a single distance information, it is possible to effectively reduce misjudgments caused by obstruction, improve the accuracy of the detection device in detecting the insulating bracket, and use this spacing information as a start signal to control the first to third cameras and range sensors to perform the data acquisition operation. This improves the accuracy of acquiring images of bolts inside the insulating bracket, images of labels on the cover, and height information of the contact rail. It can also effectively save energy consumption of the entire device, making it more practical and easier to promote and apply.

[0021] 2. The use of a skeleton structure with skin achieves a lightweight structural design for the entire device, which can effectively reduce the weight of the detection device, improve portability and practicality, and better meet the actual operational needs of rail transit personnel.

[0022] 3. The skeleton structure consists of a sheet-like main frame and an annular auxiliary frame. The sheet-like main frame is divided into two parts by the laser contour detector. The near end serves as the detection body and is equipped with the second to fourth cameras, two range sensor groups, and a separate range sensor. Combined with the left and right reinforcing plates, these are arranged on both sides of the sheet-like main frame at the near end. The far end is equipped with the first camera, and the main control module is mounted on both sides of the sheet-like main frame at the far end. This allows for the rational distribution of various detection devices within the skeleton structure, making full use of the internal space, effectively reducing the overall size of the device, and facilitating a lightweight design.

[0023] 4. The parameter detection device of this utility model is also equipped with an extension conversion block, which is equipped with a quick-connect connector. Multiple extension conversion blocks of different lengths can be designed according to the actual application scenario, so as to better adapt to the actual measurement needs while ensuring the electrical connection between the main control module and the dedicated mounting platform. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the measurement of the guide height and pull-out value of the contact rail in existing technologies.

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 2 ;

[0028] Among them, 1-mechanical body, 101-sheet main frame, 102-ring auxiliary frame, 2-dedicated mounting platform, 3-contact rail, 4-traverse rail, 5-8-first to fourth cameras, 9-distance sensor, 10-distance sensor group, 11-laser contour detector, 12-main control module, 13-extension conversion block, 14-light shield, 15-left reinforcing plate, 16-right reinforcing plate. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0030] like Figure 2-4 As shown, this utility model provides a parameter detection device for rail contact rails in rail transit, including a main control module and a mechanical body 1. One end of the mechanical body 1 is connected to a dedicated mounting platform 2, and the other end extends directly below the contact rail 3 and runs along the travel rail 4 under the drive of the dedicated mounting platform 2. The end closer to the dedicated mounting platform 2 is called the far end, and the end closer to the contact rail 3 is called the near end. A first camera 5 is mounted on the far end, and a second to fourth camera 6-8 and a ranging sensor 9 are mounted on the near end. A set of ranging sensors 10 is mounted on each side of the near end. A laser profile detector 11 is mounted in the middle of the mechanical body 1, and the main control module 12 is installed inside.

[0031] The first camera 5 is used to capture image information of the label on the insulating support housing; the second and third cameras 6 and 7 are used to capture image information of the bolts on the side and bottom surfaces of the insulating support, respectively; the fourth camera 8 is used to capture video information of the lower surface of the contact rail in real time; the distance sensor 9 is used to capture height information of the distance from the contact rail; the laser profile detector 11 is used to capture profile information of the lower surface of the contact rail in real time; and the two distance sensor groups 10 are used to capture multiple spacing information of the side of the insulating support that is first encountered in the running direction.

[0032] The main control module 12 is electrically connected to the first to fourth cameras 5-8, the laser contour detector 11, the distance sensor 9, and two distance sensor groups 10. It receives spacing information and controls the first to third cameras and the distance sensors to collect data. By using the distance sensor groups to detect multiple spacing information points on the side of the insulating support, instead of a single distance point, it effectively reduces misjudgments caused by obstructions, improving the accuracy of the detection device in detecting the insulating support. Simultaneously, using this spacing information as a start signal controls the first to third cameras and the distance sensors to perform data acquisition, improving the accuracy of acquiring images of bolts inside the insulating support, labels on the cover, and the height information of the contact rail. Furthermore, it effectively saves energy for the entire device, making it more practical and easier to promote and apply.

[0033] Specifically as follows:

[0034] After a thorough investigation of the facilities surrounding the insulating support, each ranging sensor group 10 is equipped with two ranging sensors. One ranging sensor has its detection end horizontally facing the side of the insulating support, while the other ranging sensor has its detection end angled downwards towards the bottom corner of the insulating support. In this way, by using the distance information between different positions of the insulating support and the ranging sensor group, it is possible to relatively accurately determine that the object in front is the insulating support, so as to use this as a start signal to control the operation of the first to third cameras and the ranging sensors.

[0035] The remote end can be detachably connected to the dedicated mounting platform 2 via the extension conversion block 13, and the electrical connection between the main control module 12, the extension conversion block 13 and the dedicated mounting platform 2 is realized through the quick-connect interface. The quick-connect interface can be a mother-daughter structure aviation electrical connector, which is assembled on both sides of the extension conversion block. This allows for the electrical connection between the main control module and the dedicated mounting platform while extending the entire device, which is beneficial to expanding the application range of the detection device. At the same time, the length of the extension conversion block can be set to multiple lengths according to the requirements of the actual application scenario.

[0036] like Figure 3-4As shown, the mechanical body 1 has a bent rod-shaped structure with an internal skeleton structure. The skeleton structure includes a sheet-like main frame 101, on which multiple annular auxiliary frames 102 are spaced apart. For example, four are provided, located at the far end, the near end, and both sides of the bend. They together support the skin wrapped around the outside of the skeleton structure. The skin can be made of carbon fiber material to reduce the weight of the entire device.

[0037] The sheet-like main frame 101 has a hollow structure at the bend. The laser contour detector 11 is set inside the hollow structure and is tilted upwards. Its tilt angle is based on the scanning range of the detection laser being able to cover the lower surface of the contact rail 3, ensuring that the entire lower surface can be scanned. At the same time, a light shield 14 is also set directly above the detection end of the laser contour detector 10 to minimize the influence of the light in the environment where the insulating support is located on the detection of the laser contour detector 11. Similarly, a light shield 14 is also set directly above the detection end of the first camera 5.

[0038] The sheet-like main frame 101 has a left reinforcing plate 15 and a right reinforcing plate 16 on its near-end positions. A second camera 6 and a fourth camera 8 are arranged between the left reinforcing plate 15 and the sheet-like main frame 101. A third camera 7 and a distance sensor 9 are arranged between the right reinforcing plate 16 and the sheet-like main frame 101. The detection end of the third camera 7 faces the bottom surface of the insulating support, the detection end of the second camera 6 faces the side of the insulating support, and the detection ends of the fourth camera 8 and the distance sensor 9 face the lower surface of the contact rail 3. A distance sensor group 10 is arranged on the outer side of the left reinforcing plate 15 and the right reinforcing plate 16. They can all be bolted to the sheet-like main frame 101, the left reinforcing plate 14, and the right reinforcing plate 15 for easy maintenance.

[0039] Meanwhile, two strip lights are spaced apart at the top near the camera, and strip lights are also arranged around the first camera 5, thus providing a good measurement environment for each detection device.

[0040] A first camera 5 is installed on the upper part of the sheet-like main frame 101 near the far end, and a main control module 12 is installed on both sides. The detection end of the first camera 5 is set towards the label position of the cover to facilitate the acquisition of label images. The main control module 12 includes two circuit boards, which are arranged on both sides of the sheet-like main frame 101 between the first camera 5 and the laser contour detector 11. This makes full use of the space of the skeleton structure, improves the space utilization rate, and reduces the volume of the entire device.

[0041] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples. Various changes or modifications can be made to these embodiments without departing from the principles and essence of the present invention. Therefore, the scope of protection of the present invention is defined by the appended claims.

Claims

1. A parameter detection device for a contact rail of a rail transit, comprising a main control module and a mechanical body, one end of the mechanical body being connected to a special mounting platform, the other end extending directly below the contact rail and running along a walking rail under the drive of the special mounting platform, characterized in that: Close to the end of the special mounting platform as the far end, close to the end of the contact rail as the near end, the first camera is mounted on the far end, the second to fourth cameras and the distance measuring sensor are mounted on the near end, one distance measuring sensor group is mounted on each side of the near end, the laser profile detector is mounted at the middle position of the mechanical body, and the main control module is mounted inside, The first camera is used to collect label image information on the insulating support shell, the second and third cameras are respectively used to collect bolt image information on the side and bottom surfaces of the insulating support, the fourth camera is used to collect video information on the lower surface of the contact rail in real time, the distance measuring sensor is used to collect height information from the contact rail, the laser profile detector is used to collect profile information on the lower surface of the contact rail in real time, and the two distance measuring sensor groups are respectively used to collect multiple spacing information of the first encountered side edge of the insulating support in the running direction, The main control module is electrically connected with the first to fourth cameras, the laser profile detector, the distance measuring sensor and the two distance measuring sensor groups, and is used to receive the spacing information and control the first to third cameras and the distance measuring sensor to collect.

2. The parameter detection device for a contact rail of a rail transit according to claim 1, characterized in that: Each distance measuring sensor group is provided with two distance measuring sensors, one detection end of which is horizontally arranged opposite to the side surface of the insulating support, and the other detection end of which is obliquely arranged downward to the bottom corner of the insulating support.

3. The parameter detection device for a contact rail of a rail transit according to claim 1, characterized in that: The mechanical body is in a bent rod structure, the inside of which adopts a framework structure, the framework structure includes a sheet-shaped main frame, a plurality of ring-shaped auxiliary frames are sleeved on the sheet-shaped main frame at intervals, and they jointly support the skin wrapped outside the framework structure.

4. The parameter detection device for a contact rail of a rail transit according to claim 3, characterized in that: The sheet-shaped main frame adopts a hollow structure at the bending part, the laser profile detector is arranged inside the hollow structure and obliquely upward, and a light shield plate is arranged above the detection end of the laser profile detector.

5. The parameter detection device for a contact rail of a rail transit according to claim 3, characterized in that: The sheet-shaped main frame is provided with a left reinforcing plate and a right reinforcing plate on both sides near the near end, the second camera and the fourth camera are arranged between the left reinforcing plate and the sheet-shaped main frame, and the third camera and the distance measuring sensor are arranged between the right reinforcing plate and the sheet-shaped main frame, The detection end of the third camera is arranged toward the bottom surface of the insulating support, the detection end of the second camera is arranged toward the side surface of the insulating support, and the detection ends of the fourth camera and the distance measuring sensor are arranged opposite to the lower surface of the contact rail, One distance measuring sensor group is arranged on the outside of each of the left reinforcing plate and the right reinforcing plate.

6. The parameter detection device for a contact rail of a rail transit according to claim 3, characterized in that: The upper part of the sheet-shaped main frame near the far end is provided with the first camera, and the main control module is arranged on both sides, the detection end of the first camera is arranged toward the label position of the shell, and a light shield plate is also arranged above the detection end.

7. The parameter detection device for a contact rail of a rail transit according to claim 3, characterized in that: The ring-shaped auxiliary frame is provided with four, which are respectively located at the far end, the near end and both sides of the bending part.

8. The parameter detection device for a contact rail of a rail transit according to claim 1, characterized in that: The far end is detachably connected with the special mounting platform through an extension conversion block, and the electrical connection between the main control module, the extension conversion block and the special mounting platform is realized through a quick plug interface.

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