Urban rail transit detection device

Abstract

The utility model discloses an urban rail transit detection device which comprises a detection trolley, a monitoring assembly, a cleaning assembly and a detection assembly. The detection trolley is composed of a bridge connecting the first frame and the second frame, and a driving structure at the bottom of the second frame achieves automatic walking. A camera of the monitoring assembly shoots the surface condition of the track in real time. The cleaning assembly works cooperatively through the cleaning liquid adding part, the cleaning part and the wiping part, the track is cleaned in the detection process, and interference of dirt on detection is reduced. The detection assembly detects rail surface damage through an ultrasonic flaw detector, the first laser range finder and the second laser range finder measure the height and the direction of a rail, the inertial measurement unit assists in obtaining rail parameters, and multi-aspect accurate measurement is achieved. All the components are in communication connection through the control panel, centralized control and data unified management are achieved, the detection precision and the intelligent and automatic level are improved, maintenance and upgrading are convenient, and powerful guarantee is provided for urban rail transit rail safety detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to the track detection field. More specifically, the utility model relates to a track traffic detection device. BACKGROUND

[0002] As an important part of urban public transportation, urban rail transit plays a crucial role in alleviating urban traffic congestion and improving urban operational efficiency due to its advantages such as efficiency, convenience, and environmental protection. With the rapid development of cities, the mileage of urban rail transit is continuously increasing, and the passenger flow is continuously rising, so its safe operation has become the key to ensuring the normal operation of the city and the safety of residents' travel.

[0003] As the core infrastructure of urban rail transit, the track is subjected to the pressure of trains, friction, and complex environmental factors for a long time, and the track surface inevitably accumulates various dirt. These dirt comes from a wide range of sources, including dust raised during train travel, impurities in the surrounding environment of the track, and debris generated by the wear of train parts. Over time, dirt gradually accumulates, and some of it adheres tightly to the track surface, forming stubborn stains that are difficult to clean.

[0004] The dirt on the track surface has caused great trouble to track detection work and seriously affected the accuracy of the detection results. In terms of track height detection, the presence of dirt can interfere with the recognition of the true profile of the track by detection equipment. For example, detection methods such as laser ranging rely on the emission and reception of light to measure the height fluctuations of the track surface. Dirt can absorb and scatter light, causing detection signals to be distorted, causing detection equipment to misjudge the height of the track, and thus affecting the evaluation of the smoothness of the track. Inaccurate track height detection results may mislead maintenance personnel in judging the state of the track, delay track maintenance opportunities, and, over a long period of time, may cause train operation to be bumpy, derail, and other safety accidents.

[0005] In terms of track surface damage detection, the negative impact of dirt is also significant. Minor damage to the track surface, such as cracks and wear, is an important hidden danger to track safety. Ultrasonic flaw detectors and other detection equipment detect internal and surface damage to the track by emitting and receiving ultrasonic waves, but dirt can hinder the propagation and reflection of ultrasonic waves, making detection signals unclear and making it difficult to accurately determine the location, size, and severity of damage. Some minor damage may be covered by dirt and cannot be discovered and addressed in a timely manner, and as the train continues to run, the damage may gradually expand, ultimately threatening the integrity of the track structure and the safety of train operation.

[0006] Existing urban rail transit inspection technologies and equipment have many shortcomings in dealing with track surface contamination. Traditional inspection methods often rely on manual wiping of the track surface before inspection, which is inefficient and difficult to completely remove stubborn contaminants, failing to fundamentally address the issue of compromised inspection accuracy. While some automated inspection equipment can reduce the workload to some extent, its ability to handle track surface contamination is limited, and it remains susceptible to interference from contaminants during the inspection process, leading to unreliable results.

[0007] Therefore, designing an urban rail transit inspection device that can efficiently remove dirt that is difficult to wipe off the track surface, avoid dirt interference, and thus accurately detect track elevation and surface damage has become a pressing technical challenge in the current urban rail transit field. Utility Model Content

[0008] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0009] Another objective of this invention is to provide an urban rail transit inspection device that can perform inspections while cleaning the tracks, thereby improving the accuracy and efficiency of urban rail transit inspections.

[0010] To achieve these objectives and other advantages according to the present invention, an urban rail transit detection device is provided, comprising:

[0011] The inspection trolley includes a bridge connecting a first frame and a second frame. The bottom of the first frame and the second frame are respectively provided with a first row of wheels and a second row of wheels that travel on a track. The bottom of the second frame is provided with a drive structure that drives the second row of wheels to travel.

[0012] The monitoring component includes a pair of cameras positioned at the front end of the first frame, each camera facing a pair of track surfaces.

[0013] The cleaning assembly includes a pair of cleaning fluid addition parts and a pair of cleaning parts disposed at the bottom of the first frame and facing a pair of track surfaces, and multiple pairs of wiping parts disposed at the bottom of the bridge frame and facing a pair of track surfaces;

[0014] The detection assembly includes a pair of ultrasonic flaw detectors and a pair of first laser rangefinders disposed at the bottom of the second frame and facing a pair of track surfaces;

[0015] Along the direction of travel when disembarking from the inspection vehicle, the first vehicle frame is located in front of the second vehicle frame.

[0016] Preferably, the cable tray includes:

[0017] four upright posts including a pair of first upright posts disposed on the first frame near a first frame end and a pair of second upright posts disposed on the second frame near a second frame end;

[0018] a pair of connecting frames facing the pair of track surfaces, each connecting frame connecting a first upright post and a second upright post;

[0019] wherein the wiping portion is disposed at a bottom of the connecting frame.

[0020] Preferably, a pair of cameras are disposed at both ends of a first crossbar, the first crossbar is disposed on a side of the first frame away from the second frame, and the first crossbar is connected to the first frame by a straight bar.

[0021] Preferably, the urban rail transit detection device further comprises a pair of second crossbars disposed on both sides of the first frame respectively, the second crossbar near the first crossbar is located between the first crossbar and the first frame, each second crossbar is provided with a pair of positioning rollers at both ends, a pair of positioning roller surfaces respectively abut against both sides of the track, and each positioning roller surface is provided with a circumferential first brush body, and the first brush body abuts against the side of the track.

[0022] Preferably, the second frame is provided with an inertial measurement unit through a buffer base, and the second frame is provided with a second laser range finder respectively facing the inner sides of the pair of tracks in the middle of the bottom.

[0023] Preferably, the cleaning liquid adding portion comprises a cleaning liquid tank disposed on the first frame and a cleaning liquid adding cavity disposed on the bottom of the first frame and facing the track surface, the cleaning liquid adding cavity is in communication with the cleaning liquid tank through a connecting pipe, and the bottom of the cleaning liquid adding cavity is provided with a small flow control valve.

[0024] Preferably, the first frame is provided with a control panel, and the camera, the small flow control valve, the inertial measurement unit, the first laser range finder, the second laser range finder and the ultrasonic flaw detector are in communication connection with the control panel.

[0025] Preferably, the cleaning portion comprises a cleaning seat disposed on the bottom of the first frame and a second brush body disposed on the bottom of the cleaning seat, the cleaning seat and the cleaning liquid adding cavity are respectively located on both sides of the first track wheel, and the bottom of the second brush body abuts against the track surface.

[0026] Preferably, the wiping portion comprises a connecting rod disposed on the bottom of the connecting frame and a wiping head disposed on the bottom of the connecting rod, the bottom of the wiping head is provided with a clamping groove so that the bottom of the wiping head is clamped on the track, and the bottom of the wiping head is detachably provided with a wiping cloth.

[0027] The utility model at least has following beneficial effects:

[0028] First, the urban rail transit detection device provided by the utility model realizes clean detection integration, the cleaning liquid adding part, the cleaning part and the wiping part of the cleaning assembly work cooperatively, the track surface dirt can be removed in time while the detection assembly detects the track, the interference of the dirt on the detection result is avoided, the accuracy of the detection data is ensured, and the detection efficiency is improved;

[0029] Second, the urban rail transit detection device provided by the utility model adopts the structural design of four stand columns and a pair of continuous frames, unnecessary material use is reduced under the premise of ensuring the stability of the overall structure, the weight of the detection trolley is reduced, the transportation and installation of the equipment are facilitated, the bearing pressure of the track is reduced, and the service life of the track is prolonged;

[0030] Third, the urban rail transit detection device provided by the utility model detects the track surface damage through a pair of ultrasonic flaw detectors arranged at the bottom of the second frame; a pair of first laser range finders and the second laser range finder in the middle can measure the track height; in combination with the inertial measurement unit, the track direction and other parameters can be detected, the design of multiple components working cooperatively is adopted, the measurement of track data in multiple aspects is realized, rich data support for the comprehensive evaluation of the track condition is provided, the problems existing in the track can be found in time and maintained, and the safe operation of the urban rail transit is ensured;

[0031] Fourth, the driving structure at the bottom of the second frame of the urban rail transit detection device provided by the utility model drives the second track wheel to walk, so that the detection trolley can move along the track automatically without manual pushing, the labor intensity of the operator is reduced, and the detection process is more coherent and efficient, and the continuous detection of long-distance tracks can be realized.

[0032] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0033] Fig. 1 It is a structural schematic view of the urban rail transit detection device in one technical scheme of the utility model;

[0034] Fig. 2 It is a structural schematic view of the detection trolley in another technical scheme of the utility model;

[0035] Fig. 3 It is a structural schematic view of the bottom structure of the second frame in another technical scheme of the utility model;

[0036] Wherein, 1, track; 2, buffer base; 3, inertial measurement unit; 4, second stand; 5, connecting frame; 6, cleaning liquid tank; 7, first stand; 8, manifold; 9, second cross bar; 10, first cross bar; 11, first laser range finder; 12, second trolley wheel; 13, ultrasonic flaw detector; 14, wiping head; 15, connecting rod; 16, cleaning part; 17, first trolley wheel; 18, cleaning liquid adding cavity; 19, camera; 20, straight bar; 21, second frame; 22, first frame; 23, second laser range finder. DETAILED DESCRIPTION

[0037] The utility model makes further detailed description in combination with the drawings below, so that the person skilled in the art can implement according to the description text.

[0038] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0039] As Figs. 1-3 shown, the utility model provides a kind of urban rail transit detection device, comprising:

[0040] Detection trolley, it includes the bridge frame of connecting first frame 22 and second frame 21, and the first frame 22 and second frame 21 bottom are separately equipped with the first trolley wheel 17 and the second trolley wheel 12 walking on track 1, wherein, second frame 21 bottom is equipped with the drive structure of driving second trolley wheel 12 walking;

[0041] Monitoring component, it includes the pair of camera 19 of setting first frame 22 front end, and the pair of camera 19 respectively opposite a pair of track surface;

[0042] Cleaning component, it includes the pair of cleaning liquid adding part of setting in the first frame 22 bottom and opposite a pair of track surface, a pair of cleaning part 16, and multiple pairs of wiping part of setting in the bridge frame bottom and opposite a pair of track surface;

[0043] Detection component, it includes the pair of ultrasonic flaw detector 13 of setting in the second frame 21 bottom and opposite a pair of track surface, a pair of first laser range finder 11;

[0044] Wherein, along the direction of walking of checking off car, the first frame 22 is located in the front of second frame 21.

[0045] As Fig. 1 and Fig. 2As shown in the above technical solution, the urban rail transit detection device comprises a detection trolley, a monitoring component, a cleaning component and a monitoring component, wherein the detection trolley, as the carrier of the whole device, takes into account mobility and stability in design, the detection trolley is composed of a first frame 22, a second frame 21 and a bridge connecting the two, the first frame 22 and the second frame 21 are respectively provided with a first running wheel 17 and a second running wheel 12 at the bottom, so that the detection trolley can walk on the track 1, the driving structure at the bottom of the second frame 21 drives the second running wheel 12 to rotate, thereby driving the whole trolley to move forward along the track 1, realizing the automatic walking function. The design of the driving structure makes the detection process not need a large amount of manpower to push, not only reduces the labor intensity, but also guarantees the stability and continuity of the detection path, avoids the detection error caused by manual pushing, improves the detection efficiency, the bridge plays the role of connection and support, it connects the first frame 22 and the second frame 21 stably through four columns (a pair of first columns 7 arranged on the first frame 22 near the end of the first frame 22 and a pair of second columns 4 arranged on the second frame 21 near the end of the second frame 21) and a pair of connecting frames 5 (connecting the first column 7 and the second column 4 respectively), provides a stable installation platform for other components, ensures the relative position of each component fixed during the detection process, and guarantees the accuracy of the detection data. The driving structure comprises a driving motor, a driving sprocket, a driven sprocket and a chain, wherein the driving motor is arranged at the bottom of the second frame 21, the driving sprocket is installed on the output shaft of the driving motor and connected with the output shaft of the driving motor through a key, to ensure synchronous rotation of the two, the driven sprocket is installed on the axle of the second running wheel 12 and connected with the axle of the second running wheel 12 through a key, so that the rotation of the driven sprocket can drive the second running wheel to rotate synchronously, the chain is wound between the driving sprocket and the driven sprocket, and the chain link and the sprocket teeth are meshed with each other, to realize power transmission, finally under the action of the driving motor, the second running wheel 12 automatically walks.

[0046] In the above technical scheme, the monitoring component is mainly composed of a pair of cameras 19 arranged at the front end of the first frame 22, and the pair of cameras 19 respectively faces a pair of track surfaces. When the detection trolley moves along the track 1, the cameras 19 continuously shoot images of the track surface. The images shot by the cameras 19 can reflect the condition of the track surface in real time. On the one hand, according to the images shot by the cameras 19, the dirt on the track surface is reflected. If there is dirt, the cleaning liquid adding part is started to release cleaning liquid onto the track 1. On the other hand, the images shot can also be used as supplementary detection data, combined with the data obtained by other detection components, to provide more comprehensive information for comprehensive evaluation of the condition of the track 1. For example, when the ultrasonic flaw detector 13 detects that there may be damage inside the track 1, the surface image shot by the camera 19 can assist in judging whether the damage has been manifested on the surface, so as to more accurately evaluate the severity of the damage. The track cleaning liquid is mainly composed of base solvent, surfactant, builder, special additive and the like. The base solvent is generally water; the surfactant can be selected from anionic surfactant (such as sodium linear alkyl benzene sulfonate), cationic surfactant (such as quaternary ammonium salt), non-ionic surfactant (such as fatty alcohol polyoxyethylene ether) and the like. When cleaning oil stains on the track surface, the lipophilic group of the surfactant will be adsorbed on the oil stain, and the hydrophilic group will be combined with water, so that the oil stain is emulsified and dispersed in water, facilitating cleaning and removal; the builder is generally selected from sodium tripolyphosphate and sodium citrate, to improve the cleaning effect of the cleaning liquid; the special additive is appropriately added according to the condition of the track 1. For example, in order to remove rust on the track surface, rust remover (such as phosphoric acid) is added; in order to inhibit the growth of bacteria during cleaning, bactericide (such as isothiazolinone) is added; in order to improve the cleaning speed of the cleaning liquid, accelerant (such as ethanolamine) is added. For example, the cleaning liquid includes the following raw materials in mass percentage: deionized water 70-80%, sodium dodecyl benzene sulfonate 5-10%, sodium tripolyphosphate 3-5%, phosphoric acid 2-3%, ethanolamine 2-3%, isothiazolinone 0.3-1%.

[0047] In the above technical scheme, the cleaning component includes a plurality of sub-components that work cooperatively. A pair of cleaning liquid adding parts is arranged at the bottom of the first frame 22 and faces the track surface. A pair of cleaning parts 16 is also arranged at the bottom of the first frame 22 and cooperates with the cleaning liquid adding parts to brush and clean the track surface when the trolley moves, further removing dirt. A plurality of wiping parts arranged at the bottom of the bridge wipe the track 1 after brushing, effectively wiping off the remaining cleaning liquid and small dirt on the track surface, keeping the track surface clean and creating good conditions for accurate detection by subsequent detection components. The design of moving and cleaning simultaneously in the present application effectively avoids the interference of dirt on the track surface on the detection result, ensuring that the detection components such as the ultrasonic flaw detector 13 and the laser range finder can obtain accurate data.

[0048] In the above technical scheme, the detection assembly is installed at the bottom of the second frame 21 and is directly responsible for obtaining key detection data of the track 1, the pair of ultrasonic flaw detectors 13 faces the track surface, uses the reflection principle of ultrasonic waves to detect whether there are cracks, looseness and other damage in the track 1, and adopts the ultrasonic nondestructive testing method to timely find potential hazards in the track 1 without damaging the structure of the track 1, thereby providing an important basis for maintenance and repair of the track 1; the pair of first laser range finders 11 is also arranged at the bottom of the second frame 21, emits and receives laser beams to accurately measure the height change of the track surface, and comprehensively detects data to comprehensively reflect the geometric state and internal quality state of the track 1, and realize accurate measurement of the track 1 in multiple aspects. The detection assembly is closely matched with the cleaning assembly to detect the cleaned track surface, thereby greatly improving the accuracy and reliability of the detection result.

[0049] In the above technical scheme, the urban rail transit detection device has at least the following beneficial effects:

[0050] 1. The cleaning assembly and the detection assembly work cooperatively, the cleaning liquid adding part, the cleaning part 16 and the wiping part can timely remove dirt on the track surface during the detection trolley, so that the ultrasonic flaw detector 13 and the first laser range finder 11 are not disturbed by dirt, accurate track surface damage and height data are obtained, the detection accuracy is improved, and a reliable basis is provided for track 1 maintenance;

[0051] 2. The pair of cameras 19 at the front end of the first frame 22 can timely spray cleaning liquid to avoid waste of cleaning liquid, and can also comprehensively analyze the detection data to make more accurate judgments on the overall condition of the track 1;

[0052] 3. The driving structure at the bottom of the second frame 21 drives the second traveling wheel 12 to automatically walk, so that the detection process does not need a large amount of manpower to push, not only reduces the burden of the operator, but also maintains the continuity and stability of the detection, improves the detection efficiency, and adapts to the long-distance track 1 detection requirement;

[0053] 4. The detection device integrates multiple functional components such as walking, monitoring, cleaning and detection, realizes measurement of track surface damage, height and other aspects through the ultrasonic flaw detector 13 and the first laser range finder 11, comprehensively obtains track 1 condition information, one-stop satisfies multiple requirements of track 1 detection, avoids complicated operation and high cost caused by using multiple independent devices.

[0054] In another technical scheme of the utility model, the bridge frame comprises:

[0055] four uprights, including a pair of first uprights 7 arranged on the first frame 22 near the ends thereof and a pair of second uprights 4 arranged on the second frame 21 near the ends thereof;

[0056] a pair of connecting frames 5, each connecting frame 5 connecting a first upright 7 and a second upright 4, and facing a pair of track surfaces;

[0057] wherein the wiping parts are arranged at the bottom of the connecting frames 5.

[0058] In the above technical solution, the four uprights are divided into two groups, a pair of first uprights 7 arranged on the first frame 22 near the ends thereof and a pair of second uprights 4 arranged on the second frame 21 near the ends thereof. The four uprights are the main support components of the bridge frame, which bear the important task of connecting the frames and bearing the connecting frames 5 and other components. Any upright is made of high-strength metal material, such as aluminum alloy or steel, to ensure sufficient strength and stability, which can withstand various forces generated during the operation of the detection device, including its own weight, the weight of the detection components, and the shock and impact forces received when walking on the track 1. The height of the uprights needs to ensure that the connecting frames 5 and the wiping parts can clean the track 1 at the appropriate position. A pair of connecting frames 5 respectively face a pair of track surfaces, and each connecting frame 5 connects a first upright 7 and a second upright 4, forming a structure that spans the track 1. The main function of the connecting frame 5 is to connect the uprights into a stable whole and provide a mounting platform for the wiping parts. The connecting frame 5 is also made of high-strength material and has a certain rigidity to ensure that the wiping parts can always remain in the correct position to effectively wipe the track 1 during the operation of the detection device, even if it is subjected to vibration and external force. The length and width of the connecting frame 5 are designed according to the spacing of the track 1 and the layout of the wiping parts to ensure that the wiping parts can cover the entire cleaning area of the track 1. In addition, the structural design of the connecting frame 5 also considers compatibility with other components, such as reserving interfaces and fixing devices on the connecting frame 5 for installing the wiping parts, which facilitates the installation, removal and replacement of the wiping parts. The wiping parts are arranged at the bottom of the connecting frame 5, so that the wiping parts can directly act on the track surface. When the detection trolley moves along the track 1, the wiping parts move with the connecting frame 5 to perform the final wiping work on the track surface cleaned by the cleaning liquid. Since the wiping parts are in direct contact with the track surface, their cleaning effect directly affects the accuracy of the subsequent detection data. The number and distribution of the wiping parts are reasonably arranged according to the cleaning requirements of the track 1. The part of the wiping parts in contact with the track 1 is usually made of soft and wear-resistant material, such as special rubber or fiber material, which can effectively remove residual dirt and moisture on the track surface without damaging the track surface.

[0059] In the above technical scheme, the four upright columns are connected with the first and second frames 21 respectively, and are stably connected through a pair of connecting frames 5, so that a stable bridge structure is constructed, so that the detection device can effectively resist vibration and bumping when running, and the overall stability is maintained, the relative positions of the wiping part, the detection assembly and other components are fixed by the stable structure, the accuracy of the detection data of the ultrasonic flaw detector 13, the first laser range finder 11 and the like is ensured, and strong support is provided for accurate evaluation of the track 1 condition; The structure design of the bridge makes the installation position of the wiping part clear and easy to contact, when the wiping part is worn or needs to be replaced, the worker can conveniently operate, without complex disassembly process, at the same time, the inspection, maintenance and replacement of other parts of the bridge are more convenient, the maintenance cost is reduced, and the use efficiency of the equipment is improved; The standardized upright column and connecting frame 5 structure are convenient for adjusting according to the spacing of different tracks 1, detection requirements and the like, for example, the length of the connecting frame 5 is adjusted to adapt to different track 1 widths, or other auxiliary detection or cleaning equipment is added on the connecting frame 5, so that the detection device can better meet the diversified urban rail transit detection scene, and the universality and expansibility of the equipment are improved.

[0060] In another technical scheme of the utility model, a pair of cameras 19 are arranged at both ends of the first horizontal rod 10, the first horizontal rod 10 is arranged on the side of the first frame 22 far away from the second frame 21, and is connected with the first frame 22 through a straight rod 20.

[0061] In the above technical scheme, the pair of cameras 19 are arranged at the two ends of the first horizontal rod 10, which can realize comprehensive coverage of the surfaces of the pair of tracks, and each camera 19 focuses on one track 1 respectively, and simultaneously obtains image information of the surfaces of the two tracks, so that in the process of detecting the trolley, the key parts of the track 1 are all within the monitoring range of the camera 19, and no abnormality is missed; the first horizontal rod 10 is arranged on the side of the first frame 22 away from the second frame 21, that is, the first horizontal rod 10 is located in front of the first frame 22, which provides relatively accurate timing for the release of the cleaning liquid and reduces the waste of the cleaning liquid; the existence of the horizontal rod also plays a certain supporting and protecting role, which avoids collision or damage of the camera 19 in the detection process; the first horizontal rod 10 is connected with the first frame 22 through the straight rod 20, and the length and angle of the straight rod 20 can be adjusted according to actual needs, so that the height and angle of the camera 19 can be flexibly changed to adapt to different track detection scenes, and meanwhile the straight rod 20 also facilitates the installation and disassembly of the camera 19, so that when the camera 19 needs to be maintained, replaced or upgraded, the staff can operate more conveniently. The connection of the straight rod 20 also keeps the camera 19 at a distance from the first frame 22, which effectively buffers the vibration of the frame during operation, avoids vibration interference with the shooting of the camera 19, ensures the stability and clarity of the shot image, and improves the accuracy of the detection data. The above structure is simple, the camera 19 is installed at the two ends of the horizontal rod, and the straight rod 20 is connected in a manner facilitating disassembly and installation, so that whether a new camera 19 is installed or the existing camera 19 is maintained, replaced or upgraded, no complex operation is needed, the maintenance cost is reduced, and the equipment maintenance efficiency is improved.

[0062] In another technical scheme of the utility model, the urban rail transit detection device further includes a pair of second horizontal rods 9 arranged on the two sides of the first frame 22 respectively, the second horizontal rod 9 close to the first horizontal rod 10 is located between the first horizontal rod 10 and the first frame 22, a pair of positioning rollers (not shown in the drawing) are arranged at the two ends of any second horizontal rod 9, the surfaces of the pair of positioning rollers abut against the two side surfaces of the track 1 respectively, and a circumferential first brush body is arranged on the surface of any positioning roller, and the first brush body abuts against the side surface of the track 1.

[0063] In the above technical scheme, the second cross bars 9 are arranged on both sides of the first frame 22, and the symmetrical layout ensures the force balance of the device on the track 1, which helps to improve the stability during the detection process. The position design of the second cross bar 9 close to the first cross bar 10 and between the first cross bar 10 and the first frame 22 makes full use of the space of the device, and the overall structure is more compact and reasonable. A pair of positioning rollers is installed at the two ends of each second cross bar 9, and the surfaces of the pair of positioning rollers are in close contact with the two side surfaces of the track 1, respectively. The positioning rollers limit the lateral displacement of the device when the device moves along the track 1, ensuring that the detection device always moves in the correct direction of the track 1, and avoiding the deviation from the track 1. In the track 1 turning or the road section with certain error, the positioning rollers can adapt to the change of the track 1 direction by rolling, ensuring the continuity and accuracy of the detection work. The surface of each positioning roller is provided with a circumferential first brush body, and the first brush body is in contact with the side surface of the track 1. During the operation of the detection device, the positioning rollers roll with the movement of the device, and at this time the first brush body also rotates. The side surface of the track 1 will accumulate various dirt during the long-term operation of the train, including dust, oil stains and debris generated during train braking, etc. The first brush body realizes the continuous cleaning function of the side surface of the track 1. After effectively removing the dirt, the first brush body can effectively prevent the dirt from accumulating and causing corrosion to the track 1, prolonging the service life of the track 1. The existence of the first brush body can also improve the contact condition between the track 1 and the wheel to a certain extent, reduce the unstable problem of friction caused by dirt, and improve the safety and comfort of train operation. In the above technical scheme, the second cross bar 9, the positioning roller and the first brush body jointly constitute a component with positioning and cleaning functions, which cooperates with other parts of the device. The positioning function of the positioning roller provides guidance for the walking of the detection device, ensuring that the detection components (such as ultrasonic flaw detector 13, laser range finder, etc.) can accurately detect the track 1, and improving the reliability of the detection data. The cleaning function of the first brush body creates a better detection environment for the detection components, avoiding the influence of the dirt on the side surface of the track 1 on the accuracy of the detection result. When the detection device is running, the low-positioned roller cooperates with the driving structure, the detection component and the cleaning component to form an efficient and stable track 1 detection system. In order to avoid the wear of the positioning roller affecting the positioning accuracy and cleaning performance, the positioning roller is detachably arranged relative to the mounting frame. One implementation way is that the mounting frame is provided with a through hole, the mounting frame is made of plastic with a certain elasticity, and the both ends of the positioning roller are provided with protrusions penetrating through the through hole. When the mounting frame is slightly deformed, the positioning roller is installed, and after installation is completed, the mounting frame automatically resets.

[0064] In another technical scheme of the utility model, the second frame 21 is provided with an inertial measurement unit 3 through the buffer base 2, and the second frame 21 is provided with a second laser range finder 23 respectively facing the inner sides of a pair of tracks 1 in the middle of the bottom.

[0065] In the above technical solution, the inertial measurement unit 3 is installed on the second frame 21 through the buffer base 2, and the buffer base 2 plays a key role, which can effectively isolate the vibration and impact generated when the detection trolley runs on the track 1, avoid damage to the inertial measurement unit 3 by these external forces, and ensure its stable work, and the buffer base 2 can be made of rubber or polyurethane. The inertial measurement unit 3 can reflect the attitude of the detection trolley in real time. The second laser range finder 23 is arranged at the bottom of the second frame 21 and faces the inner side of the track 1. The second laser range finder 23 is located at the bottom of the frame, which can accurately measure the inner side of the track 1 during the movement of the detection trolley, and in combination with the attitude of the detection trolley fed back by the inertial measurement unit 3, the track direction can be effectively judged, and the distance of the inner side of the track 1 at different positions can be measured to judge whether the track 1 has deformation, track spacing change and other problems. On the basis of cleaning the inner side of the track 1 by the positioning roller, the accuracy of the detection of the second laser range finder 23 is ensured. The inertial measurement unit 3 and the second laser range finder 23 work cooperatively to provide more comprehensive and accurate data for track 1 detection. Through comprehensive analysis of the obtained data, the overall condition of the track 1 can be more accurately evaluated, not only the height, damage and other problems of the track surface can be detected, but also the geometric shape and spatial position change of the track 1 can be deeply understood. The multi-dimensional data acquisition and analysis method greatly improves the detection accuracy and reliability, and provides a strong guarantee for the safe operation of urban rail transit.

[0066] In another technical solution of the utility model, the cleaning liquid adding part includes a cleaning liquid tank 6 arranged on the first frame 22 and a cleaning liquid adding cavity 18 arranged at the bottom of the first frame 22 and facing the track surface, the cleaning liquid adding cavity 18 is communicated with the cleaning liquid tank 6 through a connecting pipe 8, and a small flow control valve is arranged at the bottom of the cleaning liquid adding cavity 18.

[0067] In the above technical solution, the cleaning liquid tank 6 is installed on the first vehicle frame 22, and its main function is to store a sufficient amount of cleaning liquid to meet the needs of the detection device for long-distance operation on the track 1. The volume of the cleaning liquid tank 6 is designed according to the length of the detection task and the cleaning difficulty of the track 1, so that the detection device can complete the cleaning and detection work of a relatively long track 1 after being filled with cleaning liquid once, reducing the number of intermediate cleaning liquid replenishment and improving work efficiency. The cleaning liquid tank 6 is usually made of corrosion-resistant and high-pressure-resistant materials to prevent the cleaning liquid from corroding the tank body and ensure the safety of cleaning liquid storage and stable quality. The cleaning liquid adding cavity 18 is arranged at the bottom of the first vehicle frame 22 and faces the track surface. It is a key component for delivering cleaning liquid to the track surface, ensuring that the cleaning liquid can be directly and accurately sprayed onto the track 1, avoiding waste and splashing of the cleaning liquid. The cleaning liquid flowing out of the bottom of the cleaning liquid adding cavity 18 forms a uniform cover on the track surface, improving the cleaning effect. The small flow control valve can accurately adjust the outflow of the cleaning liquid, realizing precise control of the amount of cleaning liquid added. The small flow control valve can also realize automatic control and be connected to the control system of the detection device, and the opening and closing of the small flow control valve can be realized according to the image information of the camera, improving the intelligent level of the cleaning operation.

[0068] In another technical solution of the present application, the first vehicle frame 22 is provided with a control panel, and the camera 19, the small flow control valve, the inertial measurement unit 3, the first laser range finder 11, the second laser range finder 23 and the ultrasonic flaw detector 13 are all connected to the control panel. The control panel realizes integrated management of multiple key detection and control components. The control panel can not only coordinate the working order and rhythm of each component according to the preset program or the operator's instructions, but also can collect detection data of each component in real time, and comprehensively analyze and process these data, and even realize real-time monitoring of the working state of each component. Once an abnormality is found in a component, an alarm can be sent in time and corresponding measures can be taken to ensure the reliability and continuity of the detection work.

[0069] In another technical solution of the present application, the cleaning part 16 includes a cleaning seat arranged at the bottom of the first vehicle frame 22 and a second brush body arranged at the bottom of the cleaning seat. The cleaning seat and the cleaning liquid adding cavity 18 are respectively located on both sides of the first vehicle wheel 17, and the bottom of the second brush body abuts against the track surface.

[0070] In the above technical solution, the cleaning seat is arranged at the bottom of the first vehicle frame 22 and serves to support and fix the second brush body. The material of the cleaning seat is usually selected from materials with high strength and good shock absorption performance (such as high-strength engineering plastic or light alloy), which can not only ensure stable bearing of the second brush body during the movement of the detection trolley, but also reduce the influence of vibration on the cleaning effect of the second brush body. The second brush body is installed at the bottom of the cleaning seat, and the bristles thereof directly abut against the surface of the track. The material of the bristles of the second brush body is usually selected from materials with good wear resistance and cleaning ability (such as nylon or special fiber), and the material of the bristles of the second brush body is selected to be moderately hard, so that the bristles can better fit the fine concave-convex surface of the track and deeply enter the gap to remove dirt. When the detection trolley moves along the track 1, the second brush body moves synchronously with the cleaning seat to continuously brush and clean the surface of the track. The cleaning seat and the cleaning liquid adding cavity 18 are respectively arranged on the two sides of the first row of wheels 17, and the continuity and efficiency of the cleaning process are fully considered. The cleaning liquid adding cavity 18 is responsible for spraying cleaning liquid to the surface of the track to preliminarily soften and decompose the dirt, and the cleaning seat brushes the wet track surface after the cleaning liquid is sprayed. The spraying and brushing actions are closely connected, the evaporation or loss of the cleaning liquid on the surface of the track is avoided, the utilization rate of the cleaning liquid is improved, and the cleaning effect is enhanced. Moreover, the first row of wheels 17 serves to isolate and stabilize the cleaning seat and the cleaning liquid adding cavity 18, so that the two do not interfere with each other during the working process and the stable operation of the entire cleaning system is ensured. When the detection trolley starts to work, the cleaning liquid adding cavity 18 first sprays cleaning liquid to the surface of the track, the cleaning liquid forms a wet film on the surface of the track, penetrates into the dirt, and reduces the adhesion of the dirt to the surface of the track. With the movement of the detection trolley, the second brush body at the bottom of the cleaning seat then contacts the wet surface of the track and starts to brush. The second brush body uses the friction of the bristles to separate the softened dirt from the surface of the track and make the dirt suspended in the cleaning liquid. The sewage and dirt after brushing are further cleaned by the subsequent wiping part, so that the surface of the track is completely cleaned.

[0071] In another technical solution of the utility model, the wiping part includes a connecting rod 15 arranged at the bottom of the connecting frame 5 and a wiping head 14 arranged at the bottom of the connecting rod 15. The bottom of the wiping head 14 is provided with a clamping groove, so that the bottom of the wiping head 14 is clamped on the track 1. The wiping head 14 is detachably provided with a wiping cloth at the bottom.

[0072] In the above technical solution, the connecting rod 15 is installed at the bottom of the connecting frame 5 and mainly serves to connect and support the wiping head 14. The connecting rod 15 is made of stainless steel or high-strength plastic, which is strong enough to stably bear the weight of the wiping head 14 and resist various external force impacts during the operation of the detection trolley. The wiping head 14 is arranged at the bottom of the connecting rod 15 and is designed with a clamping groove at the bottom, so that the wiping head 14 can be firmly clamped on the track 1. The size and shape of the clamping groove are accurately designed according to the specifications of the track 1 to ensure a tight fit with the track 1 and prevent the wiping head 14 from shifting or falling off during operation. When the detection trolley moves along the track 1, the wiping head 14 moves synchronously with the connecting rod 15 to wipe the surface of the track. The wiping head 14 is detachably provided with a wiping cloth at the bottom. The wiping cloth is generally made of a material with strong water absorption, soft texture, and good decontamination ability (such as superfine fiber cloth). The strong water absorption of the wiping cloth enables it to quickly absorb the cleaning liquid and dirt remaining on the surface of the track, preventing the cleaning liquid from drying out and leaving marks on the surface of the track. The soft texture ensures that the wiping cloth will not scratch the surface of the track during wiping, protecting the integrity of the track 1. The good decontamination ability of the wiping cloth enables it to further remove the fine dirt remaining after brushing, achieving a higher cleanliness of the track surface. The detachable design of the wiping cloth facilitates replacement and maintenance. When the wiping cloth has been used for a period of time and has absorbed a large amount of dirt, the cleaning effect decreases, and the operator can easily remove it from the wiping head 14 and replace it with a new one, ensuring the continuous and efficient performance of the wiping work. One way to detachably arrange the wiping cloth at the bottom of the wiping head 14 is to arrange a plurality of buckles at the bottom of the wiping head 14 and a clamping groove or hole on the wiping cloth at the corresponding position. During installation, align the clamping groove or hole on the wiping cloth with the buckles on the wiping head 14, press the buckles to make them fit into the clamping groove or hole, and then fix them. During disassembly, press the unlocking part of the buckle to make it separate from the clamping groove or hole, and then remove the wiping cloth. Alternatively, the wiping part is attached to the bottom of the wiping head 14 using a magic tape, or the wiping part is detachable using a magnetic attraction structure. When the detection device cleans the track 1, the cleaning liquid is first sprayed by the cleaning liquid adding part, and the track 1 is brushed by the cleaning part 16 to remove the dirt from the track surface. Then, the wiping part starts to work, the wiping head 14 is clamped on the track 1, and the wiping cloth is in close contact with the track surface as the detection trolley moves, wiping the track surface after brushing. The wiping cloth absorbs the remaining cleaning liquid and dirt, making the track surface dry and clean, providing good conditions for subsequent detection work. During the entire cleaning process, the wiping part cooperates with the cleaning liquid adding part and the cleaning part 16 to form a complete cleaning system, ensuring that the track surface is thoroughly and efficiently cleaned.

[0073] The number of devices and the scale of processing described herein are used to simplify the description of the present application. The application, modification and change of the urban rail transit detection device of the present application are obvious to those skilled in the art.

[0074] Although the embodiments of the present application have been disclosed as above, it is not limited to the application and the embodiments listed in the specification, and it can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. A device for detecting urban rail traffic, characterized in that, The utility model relates to a rail inspection vehicle, comprising: a detection trolley, comprising a bridge connecting a first frame and a second frame, the first frame and the second frame are respectively provided with a first running wheel and a second running wheel at the bottom for walking on the rail, wherein the second frame is provided with a driving structure at the bottom for driving the second running wheel to walk; a monitoring assembly, comprising a pair of cameras arranged at the front end of the first frame, and the pair of cameras respectively face a pair of rail surfaces; a cleaning assembly, comprising a pair of cleaning liquid adding parts arranged at the bottom of the first frame and facing a pair of rail surfaces, a pair of cleaning parts, and a plurality of wiping parts arranged at the bottom of the bridge and facing a pair of rail surfaces; a detection assembly, comprising a pair of ultrasonic flaw detectors arranged at the bottom of the second frame and facing a pair of rail surfaces, and a pair of first laser range finders; wherein, along the walking direction of the inspection trolley, the first frame is located in front of the second frame.

2. The urban rail transit detection device of claim 1, wherein, The bridge comprises: four vertical columns, comprising a pair of first vertical columns arranged on the first frame near the end of the first frame, and a pair of second vertical columns arranged on the second frame near the end of the second frame; a pair of connecting frames, facing a pair of rail surfaces, and any connecting frame connecting a first vertical column and a second vertical column; wherein, the wiping part is arranged at the bottom of the connecting frame.

3. The urban rail transit detection device of claim 2, wherein, A pair of cameras are arranged at the two ends of the first horizontal rod, the first horizontal rod is arranged on the side of the first frame away from the second frame, and the first horizontal rod is connected with the first frame through a vertical rod.

4. The urban rail transit detection device of claim 3, wherein, Further comprising a pair of second horizontal rods arranged on both sides of the first frame respectively, the second horizontal rod near the first horizontal rod is located between the first horizontal rod and the first frame, any second horizontal rod is provided with a pair of positioning rollers at both ends, a pair of positioning roller surfaces respectively abut the two side surfaces of the rail, and any positioning roller surface is provided with a circumferential first brush body, and the first brush body abuts the side surface of the rail.

5. The urban rail transit detection device of claim 4, wherein, The second frame is provided with an inertial measurement unit through a buffer base, and the second frame is provided with a second laser range finder facing the inner side of a pair of rails at the middle part of the bottom.

6. The urban rail transit detection device of claim 5, wherein, The cleaning liquid adding part comprises a cleaning liquid tank arranged on the first frame and a cleaning liquid adding cavity arranged on the bottom of the first frame and facing the rail surface, the cleaning liquid adding cavity is communicated with the cleaning liquid tank through a connecting pipe, and the bottom of the cleaning liquid adding cavity is provided with a small flow control valve.

7. The urban rail transit detection device of claim 6, wherein, The first frame is provided with a control panel, and the camera, the small flow control valve, the inertial measurement unit, the first laser range finder, the second laser range finder and the ultrasonic flaw detector are in communication connection with the control panel.

8. The urban rail transit detection device of claim 7, wherein, The cleaning part comprises a cleaning seat arranged at the bottom of the first frame and a second brush body arranged at the bottom of the cleaning seat, and the cleaning seat and the cleaning liquid adding cavity are respectively located on both sides of the first running wheel, and the bottom of the second brush body abuts the rail surface.

9. The urban rail transit detection device of claim 8, wherein, The wiping part comprises a connecting rod arranged at the bottom of the connecting frame and a wiping head arranged at the bottom of the connecting rod, the wiping head is provided with a clamping groove at the bottom so that the wiping head is clamped on the rail, and the wiping head is detachably provided with a wiping cloth at the bottom.

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