A subway track inspection auxiliary device

By designing an auxiliary device for subway track inspection, utilizing multi-wheel support, gear transmission, and lighting, the problem of traditional inspection trolleys being unable to directly inspect tracks was solved, achieving stable movement and efficient inspection, thus improving inspection efficiency and safety.

CN224465865UActive Publication Date: 2026-07-07HEBEI TRANSPORTATION PLANNING & DESIGN INSTITUTE CO LTD UNDERGROUND ENGINEERING BRANCH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI TRANSPORTATION PLANNING & DESIGN INSTITUTE CO LTD UNDERGROUND ENGINEERING BRANCH
Filing Date
2025-09-25
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Traditional subway track inspection trolleys cannot directly inspect track conditions on the vehicle, requiring frequent boarding and alighting for inspection, resulting in low efficiency and safety risks.

Method used

A subway track inspection auxiliary device was designed, including a movable base plate, a support plate, connecting protective components, and a movable auxiliary component. Through the coordinated work of multi-wheel support, gear transmission, and lighting, the device can move stably on the track and provide a clear inspection field of view. It is also equipped with side guardrails and rear guardrails to ensure personnel safety.

Benefits of technology

It achieves stable movement and efficient inspection on the track, reduces non-inspection time consumption, improves inspection efficiency and safety, and adapts to the complex environment of subway tunnels.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present disclosure relates to the technical field of subway track inspection assistance, and an embodiment of the present disclosure provides a subway track inspection assistance device, which comprises a mobile base plate and a bearing plate, the bearing plate is horizontally connected to the side end face of the mobile base plate through a pin shaft, a connection protection assembly is arranged between the mobile base plate and the bearing plate, a mobile assistance assembly is arranged on the mobile base plate and the bearing plate, the mobile assistance assembly comprises a pair of inspection ports, the inspection ports are arranged at both ends of the surface of the mobile base plate, a pair of mobile wheels are rotatably connected to both ends of the bottom surface of the mobile base plate and the bearing plate, a pair of drive wheels are arranged on the bottom surface of the mobile base plate, and drive gears driven by electricity are arranged at the opposite ends of the mobile base plate. Through the above technical scheme, the technical problem that the existing technology can only carry inspection personnel to move on the track and cannot directly complete track condition inspection operation on the trolley and the staff need to frequently get on and off the trolley for detection is solved.
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Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of subway track inspection assistance, specifically, to a subway track inspection assistance device. Background Technology

[0002] In subway operation and maintenance, track inspection is a core component of ensuring train operation safety. Regular checks are required to inspect rail wear, loose fasteners, and track bed settlement, promptly eliminating potential safety hazards. To improve inspection mobility, current inspections largely rely on inspection trolleys as mobile vehicles. However, the limitations of traditional subway track inspection trolleys are becoming increasingly apparent: these trolleys are generally small vehicles, only able to carry inspection personnel along the track. They cannot directly perform track condition checks on the trolley itself, requiring staff to frequently board and alight from the trolley for inspections. This is not only inconvenient but also severely restricts inspection efficiency and increases operational safety risks.

[0003] Traditional inspection trolleys are designed with only mobility in mind, lacking auxiliary structures for track inspection. After arriving at the inspection point, inspectors must stop and get off the trolley before manually measuring or checking the track condition using inspection tools (such as gauges and flaw detectors). After completing the inspection of a single point, they must get back on the trolley and move to the next point. This repeated up-and-down process consumes a lot of time in non-inspection steps, making it difficult to achieve continuous and efficient inspections.

[0004] Therefore, the development of subway track inspection auxiliary devices that can support track inspections to be completed directly on the vehicle and reduce the need for up-and-down operations has become an urgent need to improve inspection efficiency and safety. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a subway track inspection auxiliary device, which solves the technical problem in the prior art that can only carry inspection personnel to move on the track, and cannot directly complete the track condition inspection operation on the trolley, requiring staff to frequently get on and off the trolley to carry out the inspection.

[0006] According to one aspect, at least one embodiment of this disclosure provides a subway track inspection auxiliary device, comprising:

[0007] A movable base plate and a support plate, wherein the support plate is horizontally connected to the side end face of the movable base plate by a pin;

[0008] A connecting protective assembly is disposed between the movable base plate and the support plate;

[0009] A mobility assist component is disposed on the mobile base plate and the support plate;

[0010] The mobile auxiliary component includes a pair of inspection ports, which are located at both ends of the surface of the mobile base plate. The mobile base plate and the bottom surface of the support plate are rotatably connected to both ends of the mobile base plate. A pair of drive wheels are provided on the bottom surface of the mobile base plate, and drive gears that are driven to rotate by electricity are provided at opposite ends of the mobile base plate.

[0011] As a further technical solution, both ends of the surface of the movable base plate are provided with openings, the drive gear is located in the openings, and a driven gear is provided at one end of the drive wheel, the driven gear meshing with the drive gear.

[0012] As a further technical solution, a pair of side frames are provided at both ends of the surface of the movable base plate, and lighting lamps are provided on the side end faces of the side frames. The lighting lamps are all tilted downwards, and the drive wheel is located at the center of the inspection port.

[0013] According to another aspect, in at least one embodiment of the present invention, the connecting protective assembly includes a pair of side guardrails, the side guardrails being fixed at both ends of the surface of the movable base plate, and each side end face of the side guardrails being rotatably connected to a mating guardrail via a pin.

[0014] As a further technical solution, a rear guardrail is provided at one end of the surface of the movable base plate, and the docking guardrails are respectively attached to the rear guardrail and both sides of the bearing plate. Slots are provided on both sides of the movable base plate and the bearing plate, as well as on the side end face of the side guardrail.

[0015] As a further technical solution, a docking frame is inserted into the slot, and a bolt is inserted into the outside of the docking frame. One end of the bolt is connected to the two end faces of the movable base plate by threading. The docking guardrail is fixed to both sides of the bearing plate by the docking frame.

[0016] As a further technical solution, the support plate can rotate 90° through the pin connection with the movable base plate.

[0017] As a further technical solution, both the moving wheel and the driving wheel have an I-shaped cross-section.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] In this disclosure, the mobile auxiliary component solves the problems of unstable movement and insufficient field of vision of traditional inspection vehicles through multi-wheel coordination and precise lighting. The drive wheels and moving wheels form a multi-wheel support system, which, together with the I-beam structure, conforms to the track to prevent the device from shifting or derailing, ensuring stable movement. The drive gear and driven gear mesh to ensure uniform movement speed and avoid swaying when personnel are standing. The inspection port provides inspection personnel with a window to directly observe the track, allowing for inspection without disembarking. The side-mounted lighting illuminates the track details clearly, eliminating blind spots in dimly lit environments. This structure enables stable device movement and efficient track inspection, reduces non-inspection time, improves inspection efficiency, and provides personnel with safe and clear working conditions, making it suitable for the complex inspection environment of subway tunnels. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0022] Figure 2 This is an isometric drawing of the present disclosure;

[0023] Figure 3 Appendix to this disclosure Figure 1 Enlarged view of part A in the middle;

[0024] In the diagram: 1. Movable base plate; 2. Support plate; 3. Movable auxiliary components; 3-1. Inspection port; 3-2. Movable wheels; 3-3. Drive wheels; 3-4. Drive gear; 3-5. Through port; 3-6. Driven gear; 3-7. Side frame; 3-8. Lighting; 4. Connecting protective components; 4-1. Side guardrail; 4-2. Docking guardrail; 4-3. Rear guardrail; 4-4. Slot; 4-5. Docking frame; 4-6. Bolt. Detailed Implementation

[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-3 As shown, it illustrates a subway track inspection auxiliary device according to an embodiment of the present disclosure, comprising:

[0032] The movable base plate 1 and the support plate 2 are horizontally connected to the side end face of the movable base plate 1 by a pin.

[0033] A connecting protective component 4 is disposed between the movable base plate 1 and the bearing plate 2;

[0034] A mobile auxiliary component 3 is disposed on the mobile base plate 1 and the support plate 2;

[0035] The mobile auxiliary component 3 includes a pair of inspection ports 3-1, which are located at both ends of the surface of the mobile base plate 1. The mobile base plate 1 and the bottom surfaces of the support plate 2 are rotatably connected to the mobile wheels 3-2. The bottom surface of the mobile base plate 1 is provided with a pair of drive wheels 3-3. The opposite ends of the mobile base plate 1 are provided with drive gears 3-4 that are driven by electricity. Both ends of the surface of the mobile base plate 1 are provided with openings 3-5. The drive gears 3-4 are located in the openings 3-5. One end of the drive wheel 3-3 is provided with a driven gear 3-6, which meshes with the drive gear 3-4. Both ends of the surface of the mobile base plate 1 are provided with a pair of side frames 3-7. The side end faces of the side frames 3-7 are provided with lighting lamps 3-8. The lighting lamps 3-8 are all tilted downwards. The drive wheel 3-3 is located in the center of the inspection port 3-1.

[0036] In some examples, in order to achieve stable movement of the device on the subway track and provide a clear inspection field of view for the inspectors, and to avoid deviation or insufficient field of view during movement affecting the inspection efficiency, a moving auxiliary component 3 is designed. This component includes moving wheels 3-2 that are rotatably connected to the bottom ends of the moving base plate 1 and the support plate 2. Together with a pair of drive wheels 3-3 on the bottom surface of the moving base plate 1, a multi-wheel support structure is formed. The moving wheels 3-2 provide auxiliary support from both sides, and the drive wheels 3-3 provide the moving power, ensuring that the device is subjected to balanced force when moving on the track, and avoiding tilting or deviation due to force on one side.

[0037] The drive wheel 3-3 is located in the center of the inspection port 3-1, which reduces the obstruction of the inspection personnel's view of the track through the inspection port 3-1, and makes it convenient for personnel to directly check the track status through the inspection port 3-1, thus improving the convenience of inspection.

[0038] The drive gears 3-4, which are electrically driven to rotate at opposite ends of the movable base plate 1, mesh with the driven gear 3-6 at one end of the drive wheel 3-3, forming a stable gear transmission mechanism. The electric drive drives the drive gear 3-4 to rotate, and transmits power to the drive wheel 3-3 through the driven gear 3-6, causing the drive wheel 3-3 to rotate and drive the entire device to move.

[0039] The precision of gear transmission ensures stable rotation speed of drive wheel 3-3, preventing sudden changes in device speed and ensuring stability for inspection personnel when standing. The openings 3-5 at both ends of the surface of the movable base plate 1 provide installation and meshing space for drive gear 3-4 and driven gear 3-6, while also facilitating later maintenance and repair.

[0040] The lighting lamps 3-8 on the side frames 3-7 at both ends of the movable base plate 1 are tilted downwards, which can accurately project light onto the track surface. Even in the dim environment of the subway tunnel, the track details (such as cracks, foreign objects, etc.) can be clearly illuminated, avoiding the omission of inspection due to insufficient light. The lighting lamps 3-8 on both sides are symmetrically distributed to ensure uniform lighting on both sides of the track and no blind spots.

[0041] During operation, drive gear 3-4 drives drive wheel 3-3 to move the device. Inspectors observe the track through inspection port 3-1, and lighting 3-8 provides illumination. Multi-wheel support ensures stable movement, gear transmission controls movement speed, and lighting enhances inspection clarity. All components work together to achieve stable device movement and track inspection, meeting inspection requirements.

[0042] like Figures 1-3 As shown in the figure, the connecting protection component 4 in this embodiment includes a pair of side guardrails 4-1. The side guardrails 4-1 are fixed at both ends of the surface of the movable base plate 1. The side end faces of the side guardrails 4-1 are rotatably connected to the docking guardrails 4-2 by pins. A rear guardrail 4-3 is provided at one end of the surface of the movable base plate 1. The docking guardrails 4-2 are respectively attached to the rear guardrail 4-3 and both sides of the support plate 2. Slots 4-4 are provided on both sides of the movable base plate 1 and the support plate 2, as well as on the side end faces of the side guardrails 4-1. A docking bracket 4-5 is inserted into the slot 4-4. A bolt 4-6 is inserted into the outside of the docking bracket 4-5. One end of the bolt 4-6 is screwed to both end faces of the movable base plate 1 by threads. The docking guardrails 4-2 are fixed to both sides of the support plate 2 by the docking brackets 4-5.

[0043] In some examples, in order to provide a safe standing space and all-round protection for inspection personnel, prevent personnel from falling from the sides or rear during device movement or inspection, and meet the continuous movement requirements of the mobile auxiliary component 3, ensuring that personnel do not need to repeatedly go up and down during inspection, a connecting protection component 4 is designed. This component includes side guardrails 4-1 at both ends of the surface of the mobile base plate 1, forming basic protection from both sides of the device to prevent personnel from falling to the sides.

[0044] The side guardrail 4-1 has a pivot guardrail 4-2 that rotates around the pivot. When the support plate 2 is horizontally unfolded for people to stand on, the pivot guardrail 4-2 flips to fit against both sides of the support plate 2, forming a continuous side protection with the side guardrail 4-1. When the support plate 2 is folded and stored, the pivot guardrail 4-2 can flip to fit against the side guardrail 4-1, reducing space occupation.

[0045] The rear guardrail 4-3 at one end of the surface of the movable base plate 1 forms a protective barrier from the rear of the device to prevent personnel from falling backward. Together with the guardrails 4-1 on both sides, it forms a three-sided protection to fully ensure the safety of personnel.

[0046] The slots 4-4 on both sides of the movable base plate 1 and the bearing plate 2, as well as the side end faces of the side guardrail 4-1, cooperate with the docking frame 4-5 to form a fixed structure. The docking frame 4-5 is inserted into the slot 4-4, and then the docking frame 4-5 is fixed to the side end faces of the movable base plate 1 by bolts 4-6, so that the docking guardrail 4-2 is firmly fixed to both sides of the bearing plate 2. This prevents the docking guardrail 4-2 from flipping due to vibration when the device is moved, ensuring the stability of the protective structure. The detachable nature of the bolts 4-6 makes it easy to adjust the position of the docking guardrail 4-2 according to the needs in the future, improving the flexibility of the components.

[0047] The connection between guardrail 4-2 and the rear guardrail 4-3 and the two sides of the load-bearing plate 2 can further enhance the continuity of protection and avoid gaps between guardrails that may cause safety hazards. The connection and fixation between guardrail 4-2 and load-bearing plate 2 can also provide a certain support for load-bearing plate 2, enhance the stability of load-bearing plate 2 in a horizontal state, and improve the safety of personnel when standing.

[0048] During operation, the connecting guardrail 4-2 flips to fit against the support plate 2 and the rear guardrail 4-3, and is fixed by the connecting frame 4-5 and bolts 4-6, forming a safe standing space. After inspection, the connecting guardrail 4-2 and the support plate 2 can be folded by removing bolts 4-6. The guardrail splicing provides comprehensive protection, and the slot 4-4 ensures stable fixation. All components work together to achieve a safe standing space and protection, meeting the inspection needs of personnel without having to repeatedly climb up and down the device.

[0049] For example, such as Figure 1 As shown, the support plate 2 can rotate 90° through the pin connection with the movable base plate 1.

[0050] In some examples, the support plate 2 can rotate 90° through the pin connection with the movable base plate 1. This rotation angle design allows the support plate 2 to have two states: horizontal unfolding and vertical storage. When horizontally unfolded, the support plate 2 and the movable base plate 1 form a continuous standing platform, providing ample standing space for inspection personnel. Together with the guardrail connecting the protective component 4, it forms a safe working area. When vertically stored, the support plate 2 is close to the side of the movable base plate 1, which greatly reduces the overall space occupied by the device. This makes it easy to move or transport in the narrow passage of subway tunnels without the need for additional disassembly of parts, improving the flexibility of the device and adapting to the space requirements of different inspection scenarios.

[0051] For example, such as Figure 2 As shown, both the moving wheel 3-2 and the driving wheel 3-3 have an I-shaped cross-section.

[0052] In some examples, both the moving wheel 3-2 and the driving wheel 3-3 have an I-shaped cross-section. The raised part in the middle of the I-shaped structure can fit precisely with the rail head of the subway track, limiting the wheel's deviation laterally and preventing the device from derailing to the sides when moving on the track, thus ensuring the stability of movement. The discs on the upper and lower sides can increase the contact area between the wheel and the track, distribute the weight of the device, reduce the pressure of the wheel on the track surface, and avoid excessive wear on the track or wheel.

[0053] In practical use: Move the device to the starting position of the subway track, rotate the bearing plate 2 by the pin to make it horizontally unfold, flip the docking guardrail 4-2 on the side guardrail 4-1 of the moving base plate 1 so that it fits against the two sides of the bearing plate 2 and the rear guardrail 4-3 respectively, insert the docking frame 4-5 into the slots 4-4 of the moving base plate 1, the bearing plate 2 and the side guardrail 4-1, and fix the docking frame 4-5 with bolts 4-6 to form a complete protective space. Start the moving auxiliary component 3, and the electric drive drives the drive gears 3-4 at both ends of the moving base plate 1 to rotate. The drive gears 3-4 mesh with the driven gears 3-6 of the drive wheel 3-3, driving the drive wheel 3-3 to rotate, which, together with the moving wheel 3-2, enables the device to move along the track. The inspection personnel stand on the moving base plate 1 and the bearing plate 2, observe the track condition through the inspection port 3-1 of the moving base plate 1, and turn on the lighting 3-8 on the side frame 3-7 to illuminate the track details for accurate inspection. After completing the inspection of the current area, there is no need to get off the vehicle. Continue to drive the device to the next point. The entire track inspection can be completed on the device. After the inspection is completed, remove bolts 4-6 and take out the docking frame 4-5. Fold the docking guardrail 4-2 and the bearing plate 2 to reduce the size of the device for easy storage or transportation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A subway track inspection auxiliary device, characterized in that, include: The movable base plate (1) and the support plate (2) are horizontally connected to the side end face of the movable base plate (1) by a pin. A connecting protective component (4) is disposed between the movable base plate (1) and the bearing plate (2); A mobile auxiliary component (3) is disposed on the mobile base plate (1) and the support plate (2); The mobile auxiliary component (3) includes a pair of inspection ports (3-1), which are opened at both ends of the surface of the mobile base plate (1). The mobile base plate (1) and the bottom ends of the support plate (2) are rotatably connected to the mobile wheels (3-2). The bottom surface of the mobile base plate (1) is provided with a pair of drive wheels (3-3). The opposite ends of the mobile base plate (1) are provided with drive gears (3-4) that are driven by electricity to rotate.

2. The subway track inspection auxiliary device according to claim 1, characterized in that, The movable base plate (1) has openings (3-5) at both ends. The drive gear (3-4) is located in the opening (3-5). One end of the drive wheel (3-3) is provided with a driven gear (3-6), which meshes with the drive gear (3-4).

3. The subway track inspection auxiliary device according to claim 2, characterized in that, The movable base plate (1) has a pair of side frames (3-7) at both ends. Each side frame (3-7) has a lighting lamp (3-8) on its side end face. The lighting lamp (3-8) is tilted downwards. The drive wheel (3-3) is located in the center of the inspection port (3-1).

4. The subway track inspection auxiliary device according to claim 1, characterized in that, The connecting protective assembly (4) includes a pair of side guardrails (4-1), which are fixed at both ends of the surface of the movable base plate (1). The side end faces of the side guardrails (4-1) are rotatably connected to the mating guardrails (4-2) by pins.

5. The subway track inspection auxiliary device according to claim 4, characterized in that, The movable base plate (1) is provided with a rear guardrail (4-3) at one end of its surface. The docking guardrail (4-2) is respectively attached to the rear guardrail (4-3) and the two sides of the bearing plate (2). Slots (4-4) are provided on both sides of the movable base plate (1), the bearing plate (2), and the side end face of the side guardrail (4-1).

6. The subway track inspection auxiliary device according to claim 5, characterized in that, A docking frame (4-5) is inserted into the slot (4-4), and a bolt (4-6) is inserted into the outside of the docking frame (4-5). One end of the bolt (4-6) is connected to the two end faces of the movable base plate (1) by thread screwing. The docking guardrail (4-2) is fixed to both sides of the bearing plate (2) by the docking frame (4-5).

7. The subway track inspection auxiliary device according to claim 1, characterized in that, The support plate (2) can rotate 90° through the pin connection with the movable base plate (1).

8. The subway track inspection auxiliary device according to claim 1, characterized in that, Both the moving wheel (3-2) and the driving wheel (3-3) have an I-shaped cross-section.