Portable contact net dynamic inspection device

Abstract

The utility model discloses a portable contact net dynamic inspection device, including the walking mechanism of direct erection on the rail, and the rack of walking mechanism still includes binocular detection module, binocular detection laser, pendant imaging module, suspension imaging module and limit detection module, binocular detection module symmetry sets up on the upper surface of both sides of rack, and binocular detection laser sets up in the upper surface middle part of rack, and pendant imaging module symmetry sets up on the upper surface of both sides of rack and forms the opposite direction of imaging, and limit detection module sets up in the upper surface middle part of rack close to binocular detection laser, and suspension imaging module sets up between pendant imaging module and limit detection module. The utility model can realize dynamic detection to contact net geometric state, suspension state and limit state simultaneously, and the structure is reasonable, compact, and the function integration degree is high, and the installation and use are convenient and flexible, and the whole operation of installation, use and recovery can be completed only by less manual operation on the spot.

Description

Technical Field

[0001] This utility model relates to the field of contact wire inspection technology for rail transit, and in particular to a portable dynamic inspection device for contact wire. Background Technology

[0002] With the continuous increase in the mileage of railway construction in my country, and the increasingly frequent construction on operating lines and engineering lines, the condition monitoring and maintenance of the overhead contact system, a crucial component of the railway, has become particularly important. Existing railway overhead contact system inspection equipment mainly includes the following types: Manual testing equipment, including manual operation and measurement with special measuring rods and instruments, has the advantage of low equipment cost, but its disadvantages are particularly significant: high labor costs, poor safety performance, and low efficiency and measurement accuracy.

[0003] Single-function inspection equipment; this type of equipment only has the function of detecting a single type of contact network condition, such as contact network geometric parameter measuring equipment and contact network encroachment detection equipment, etc.; its disadvantage is that it has a single function, and if all the inspection items are to be completed, multiple equipment need to be used, which will inevitably lead to an increase in inspection time.

[0004] Split-type vehicle-mounted testing equipment: This type of equipment is for dynamic testing, but it suffers from drawbacks such as complex split-type structure, large size and heavy weight, and the degree of integration is also low.

[0005] Integrated vehicle-mounted inspection equipment: This type of equipment involves dynamic detection and has a high degree of integration, making it the most popular railway inspection equipment at present. However, existing products have many integrated functions, resulting in a large number of devices mounted on them. Inefficient device layout often necessitates addressing interference issues between devices by increasing structural complexity (e.g., adding more mounting rack layers or enlarging the overall installation space). Such equipment is often unsuitable for portability, requiring dedicated personnel and vehicles for transportation and on-site installation, thus exhibiting poor portability. Utility Model Content

[0006] To address the above problems, the purpose of this utility model is to provide a portable contact network dynamic inspection device that is structurally reasonable and compact, highly integrated in function, and relatively simple to install and use.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The portable contact network dynamic inspection device includes a traveling mechanism directly mounted on the rails and a frame connected to the traveling mechanism, as well as a binocular detection module, a binocular detection laser, a suspension imaging module, a suspension imaging module, and a clearance detection module. The binocular detection module is symmetrically arranged on the upper surfaces of the left and right sides of the frame, and the binocular detection laser is located in the middle of the upper surface of the frame; The suspension wire imaging modules are symmetrically arranged on the upper surfaces of the left and right sides of the frame and have opposite imaging directions; The clearance detection module is located in the middle of the upper surface of the frame, near the binocular detection laser; The suspended imaging module is positioned between the suspension wire imaging module and the clearance detection module.

[0008] In some preferred embodiments, the suspended imaging module includes a symmetrically arranged forward suspended imaging module and a reverse suspended imaging module.

[0009] In some preferred embodiments, the system further includes a control module, a human-machine interface module, and a video monitoring module disposed on the upper surface of the rack and near the outer side; The control module is signal-connected to the binocular detection module, binocular detection laser, suspension imaging module, hanging imaging module, clearance detection module, human-computer interaction module, and video monitoring module.

[0010] In some preferred embodiments, a battery module is also included; The battery module is electrically connected to the binocular detection module, binocular detection laser, suspension imaging module, hanging imaging module, clearance detection module, human-computer interaction module, video monitoring module, and control module.

[0011] In some preferred embodiments, a vibration compensation module is also included; the vibration compensation module is symmetrically arranged on the left and right sides of the lower part of the frame.

[0012] The beneficial effects of this utility model are: This invention can simultaneously achieve dynamic detection of the contact wire's geometric state, suspension state, and clearance state; it has a reasonable and compact structure, high functional integration, and is relatively convenient and flexible to install and use. Only a small number of personnel are needed on-site to complete all operations of installation, use, and recycling. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of a preferred embodiment of the present invention; Figure 2 This is a top view of a preferred embodiment of the present invention. Figure 3 This is a schematic diagram of the axial side structure of a preferred embodiment of the present invention; Figure 4 This is a distorted image of a light stripe on a contact line captured by a binocular detection module in a preferred embodiment of the present invention. Figure 5 This is a suspended state image captured by the suspended imaging module in a preferred embodiment of the present invention; Figure 6This is a dropper state image captured by the dropper imaging module in a preferred embodiment of the present invention; In the diagram: 1. Walking mechanism; 2. Frame; 3. Binocular detection module; 4. Binocular detection laser; 5. Suspension wire imaging module; 6. Suspension imaging module; 7. Clearance detection module; 8. Control module; 9. Human-machine interaction module; 10. Video monitoring module; 11. Battery module; 12. Vibration compensation module; Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings, further elaborates on this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] This utility model provides a portable dynamic inspection device for overhead contact lines, such as... Figures 1-3 As shown, the system includes a traveling mechanism 1 directly mounted on the rails, and a frame 2 connected to the traveling mechanism 1. It also includes a binocular detection module 3, a binocular detection laser 4, a suspension imaging module 5, a suspension imaging module 6, and a clearance detection module 7. It should be understood that the frame 2 and the traveling mechanism 1 are connected in a movable manner, which facilitates installation and use. Only a small amount of manpower is needed on site to complete all operations of installation, use, and recycling.

[0016] The binocular detection module 3 is symmetrically arranged on the upper surfaces of the left and right sides of the frame 2, and the binocular detection laser 4 is arranged in the middle of the upper surface of the frame 2; The suspension wire imaging module 5 is symmetrically arranged on the upper surfaces of the left and right sides of the frame 2 and the imaging directions are opposite. The clearance detection module 7 is disposed in the middle of the upper surface of the frame 2, near the binocular detection laser 4; The suspended imaging module 6 is disposed between the suspension wire imaging module 5 and the boundary detection module 7.

[0017] The walking mechanism 1 described in this utility model has both electric and manual drive functions, such as... Figure 1 As shown, at least one side of the walking mechanism 1 is connected to a speed pulse module and a braking module for driving and braking the walking mechanism 1. When the system is not powered, both the braking and driving modules stop working, so that the trolley is in a manually pushable state (corresponding to the state of a car in neutral and with the handbrake released).

[0018] The contact wire geometric parameters detected by this utility model mainly include: contact wire geometric parameters under static conditions, including contact wire height, pull-out value, height difference between two contact wires, lateral distance between two contact wires, contact wire slope, contact wire deflection angle (changing direction in the horizontal plane), support position, dropper position, span, kilometer marker, etc. The equipment for measuring these geometric parameters mainly includes a binocular detection module 3 and a binocular detection laser 4, and its working process is as follows: The binocular detection module 3 mainly includes a high-speed industrial area array digital camera, and the binocular detection laser 4, as a light source, mainly includes a line laser. The binocular detection laser 4 projects laser light upwards onto the contact line, and the high-speed industrial area array digital camera tilts at a certain angle to capture the distorted image of the light stripe on the contact line. The image capture result is as follows: Figure 4 As shown in the figure, the image displays an 8-bit grayscale bitmap image output by a high-speed digital camera. These are cropped portions of the images at the anchor joints of flexible and rigid contact wires, with the highlighted areas representing the distortion curves formed by the laser beam at the contact wire and busbar. It can be seen from the figure that the position of the distortion curves formed by the laser beam on the contact wire varies depending on the height and lateral position of the contact wire. Using specialized image processing algorithms, the pixel coordinates of the bottom of the contact wire in the image are determined. Then, through a series of coordinate system calculations, the geometric position of the contact wire in actual space, namely the conductor height and pull-out value, is obtained. In sections with two contact wires, the pull-out value and contact wire height of each conductor are calculated separately. The absolute value of the difference in pull-out values ​​is the parallel spacing between the two contact wires, and the absolute value of the difference between the heights of the two contact wires is the desired height difference. The same principle can be used to measure the parallel spacing and height difference of the contact wires at anchor joints, wire branches, etc. Measurements of other geometric parameters can be performed using conventional calculation methods in this field, which will not be detailed here.

[0019] The contact wire suspension status detected by this utility model mainly includes: missing cotter pins and nuts, foreign objects, detached parts, broken or bent suspension wires, defects in the U-ring of the positioner, whether the positioning clamp is tight, defects in the stop washer, and other inspection items specified in the 6C technical conditions. The equipment for detecting the contact wire suspension status mainly includes: a suspension imaging module 6 and a suspension wire imaging module 5, and its working process is as follows: The suspended imaging module 6 and the dropper imaging module 5 mainly include several integrated high-definition industrial area array cameras and high-power supplementary lights. When the device moves to a position containing the suspension support, the high-definition industrial area array cameras and high-power supplementary lights operate to acquire high-definition images of the contact wire suspension position and the dropper. The high-definition image acquisition results are as follows: Figure 5 , Figure 6As shown. After each inspection task is completed, the acquired high-definition images are stored locally or in the cloud in a one-pole-one-segment format, so that technicians can view, analyze, annotate defects, and export defect reports. In some preferred embodiments, in order to achieve imaging of the front and back sides of the overhead contact line suspension, the suspension imaging module 6 includes a symmetrically arranged front suspension imaging module 6 and a reverse suspension imaging module 6. It should be understood that the symmetrical arrangement here specifically refers to a symmetrical back-to-back layout.

[0020] The clearance conditions detected by this utility model mainly include: lateral clearance and railway line building clearance. The equipment for clearance detection mainly includes: clearance detection module 7, and its working process is as follows: The clearance detection module 7 mainly includes a laser scanning radar. Based on the TOF (Time-of-Flight) principle, the laser scanning radar continuously emits laser pulses outward. A rotating optical mechanism emits the laser pulses at certain angular intervals (angular resolution) in various directions within the scanning angle, forming a two-dimensional scanning surface with radial coordinates as the reference. The position information of the object being measured is given through the distance from the scanner to the object and the corresponding angle data. The scanning radar uses a built-in high-speed DSP to sample and analyze the returned laser waveform. The echoes from external interference and the echoes from the actual object being measured will differ in waveform and time distribution, thus accurately identifying the signal of the real object being measured. The use of multiple echo technology can greatly improve the reliability of detection, especially since the detection environment of this invention is often a harsh environment with high dust and fog. Furthermore, in some preferred embodiments, the building clearance outline can be drawn based on the above feedback data to determine in real time whether there is any encroachment.

[0021] In some preferred embodiments, to enhance the functionality of this invention, including facilitating human-machine interaction and equipment control, the portable contact network dynamic inspection device further includes a control module 8, a human-machine interaction module 9, and a video monitoring module 10 disposed on the upper surface of the frame 2 near the outer side. The control module 8 is signal-connected to the binocular detection module 3, the binocular detection laser 4, the suspension imaging module 5, the suspension imaging module 6, the clearance detection module 7, the human-machine interaction module 9, and the video monitoring module 10. It should be understood that the signal connection in this invention can be at least one of wired or wireless connection. Furthermore, those skilled in the art should recognize that the control module 8 has built-in supporting software and applications that implement all the functions described in the above embodiments. The control module 8, the human-machine interaction module 9, and the video monitoring module 10 are positioned on the upper surface of the frame 2 near the outer side to facilitate operation by on-site technicians. The specific location of these components is not further limited in this invention; their placement is based on the actual space on the frame 2.

[0022] In some preferred embodiments, to achieve self-driving of the portable contact network dynamic inspection device, a battery module 11 is also considered. The battery module 11 is electrically connected to the binocular detection module 3, binocular detection laser 4, suspension imaging module 5, suspension imaging module 6, clearance detection module 7, human-machine interaction module 9, video monitoring module 10, and control module 8, providing power to each device. Furthermore, other external power sources can also be used as energy input, such as solar panels or generators.

[0023] Furthermore, to eliminate or reduce the vibration transmitted from the traveling mechanism 1 to the frame 2 during dynamic operation on the track, thus ensuring the measurement accuracy and imaging quality of each detection module, this invention also includes a vibration compensation module 12. The vibration compensation module 12 is symmetrically arranged on the lower left and right sides of the frame 2. Specifically, during dynamic inspection, the contact between the traveling mechanism 1 and the track inevitably generates vibration. If this vibration is directly transmitted to the frame 2, it will cause the imaging devices such as the binocular detection module 3, the suspension imaging module 5, and the suspension imaging module 6 mounted on the frame 2 to shake when acquiring images, resulting in blurred images and affecting the accurate identification of defects in the contact wire suspension status. Simultaneously, this vibration will also adversely affect the accuracy of the measuring devices such as the binocular detection module 3 and the clearance detection module 7, leading to errors in the measurement data. The vibration compensation module 12 can effectively absorb and suppress the aforementioned vibrations, providing a relatively stable working platform for various detection modules on the frame 2, thereby ensuring the imaging clarity and measurement accuracy during dynamic operation and improving the overall detection reliability and data accuracy of this invention.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable overhead line system dynamic inspection device, comprising a walking mechanism (1) directly erected on a rail, and a rack (2) connected with the walking mechanism (1), characterized in that: It also includes a binocular detection module (3), a binocular detection laser (4), a suspension imaging module (5), a suspension imaging module (6), and a limit detection module (7); The binocular detection module (3) is symmetrically arranged on the upper surfaces of the left and right sides of the frame (2), and the binocular detection laser (4) is arranged in the middle of the upper surface of the frame (2); The suspension wire imaging module (5) is symmetrically arranged on the upper surfaces of the left and right sides of the frame (2) and the imaging directions are opposite. The clearance detection module (7) is located in the middle of the upper surface of the frame (2) near the binocular detection laser (4); The suspended imaging module (6) is located between the suspension wire imaging module (5) and the boundary detection module (7).

2. The portable overhead line dynamic inspection device of claim 1, wherein: The suspended imaging module (6) includes a forward suspended imaging module (6) and a reverse suspended imaging module (6) arranged symmetrically.

3. The portable overhead line dynamic inspection device of claim 1, wherein: It also includes a control module (8), a human-machine interaction module (9), and a video monitoring module (10) disposed on the upper surface of the rack (2) and near the outside; The control module (8) is signal-connected to the binocular detection module (3), binocular detection laser (4), suspension imaging module (5), suspension imaging module (6), boundary detection module (7), human-computer interaction module (9) and video monitoring module (10).

4. The portable overhead line dynamic inspection device of claim 1, wherein: It also includes a battery module (11); The battery module (11) is electrically connected to the binocular detection module (3), binocular detection laser (4), suspension imaging module (5), suspension imaging module (6), clearance detection module (7), human-computer interaction module (9), video monitoring module (10) and control module (8).

5. The portable overhead line dynamic inspection device of claim 1, wherein: It also includes a vibration compensation module (12); the vibration compensation module (12) is symmetrically arranged on the left and right sides of the lower part of the frame (2).

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