Railway track detection device

Abstract

The application provides a rail detection device for rail transit, and relates to the technical field of rail detection. The device comprises a frame assembly, a visual detection assembly, a knocking assembly, a sound detection assembly, a walking assembly, an illuminating spotlight, a marking assembly and an observation camera. The frame assembly is arranged across a rail piece to provide a mounting position. The visual detection assembly is arranged at the back side of the frame assembly to take pictures of the annular positions of the rail. The knocking assembly is arranged at the side end of the frame assembly to generate longitudinal and transverse knocking forces. The sound detection assembly is arranged at the knocking assembly to collect knocking sounds and perform comparison detection. The walking assembly is arranged below the frame assembly to provide a walking function. The illuminating spotlight is arranged on the frame assembly to provide an illuminating function. The visual detection assembly can take pictures of each position of the annular rail, thereby ensuring the comprehensiveness of detection.

Description

Technical Field

[0001] This invention relates to the field of railway track inspection technology, specifically to a railway track inspection device for rail transit. Background Technology

[0002] As a key component of rail transit, the integrity and reliability of rail tracks play a crucial role in the safe operation of rail transit. Therefore, it is necessary to regularly inspect the rails to prevent cracks, damage, loose screws, and other issues from appearing on the rails.

[0003] In related technologies, such as the one disclosed in CN120422900A, a sound-detection-based self-balancing wheeled rail inspection device and method includes a self-balancing wheeled rail inspection device and a server terminal. The self-balancing wheeled rail inspection device is placed on the rail. During movement, a gyroscope detects the device's attitude and balance. A track-following camera identifies rail images, controlling the self-balancing wheeled inspection device to maintain its self-balancing state and follow the track along a single rail. During movement, the device taps the rail at regular intervals or distances to collect sound, which is then transmitted to the server terminal for real-time sound detection, enabling the classification and determination of rail conditions based on sound.

[0004] The aforementioned detection device generates sound by tapping the rails, collects the sound, and compares it to determine whether there is any abnormality in the rails. However, it cannot detect whether bolts or fasteners are loose, and manual tapping is required, which is not convenient for detection. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a rail inspection device for rail transit, which solves the problem of not being able to automatically detect whether bolts, fasteners, and other parts are loose.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rail inspection device for rail transit, used for inspecting rail components, comprising: A frame assembly spanning the rail section, used to provide an installation location; A visual inspection component, located on the rear side of the frame component, is used to capture images of the circular position of the railway track. A striking component, located at the side end of the frame component, is used to generate longitudinal and lateral striking forces; A sound detection component, located at the tapping component, is used to collect and compare tapping sounds. A walking component, located below the frame component, is used to provide walking functionality; A spotlight, mounted on the frame assembly, for providing illumination; A marking component, located on the side of the frame component, is used to provide marking functionality; An observation camera, located at the end of the frame assembly, is used to observe the condition of bolts and fasteners. The visual inspection component captures images of various locations around the rail ring, ensuring comprehensive inspection. The striking component generates longitudinal and lateral striking forces, enabling all-around inspection of the rails, bolts, and fasteners; this reliable inspection eliminates the need for manual striking and increases efficiency. Furthermore, the sound detection component and the observation camera utilize the sound generated by the striking component to determine if any components are malfunctioning, and the observation camera can detect whether bolts or fasteners are loose, ensuring the safety of rail transit operations.

[0007] Preferably, the frame assembly includes a main frame, with handles fixedly connected to both ends of the main frame and an external frame fixedly connected to the middle of the main frame.

[0008] Preferably, the visual inspection component includes a mounting bracket fixedly installed on the main frame, a ring slide rail fixedly connected to the lower part of the mounting bracket, a driven gear ring slidably connected inside the ring slide rail, a servo motor fixedly installed on the outer side of the ring slide rail, a drive gear fixedly connected to the output end of the servo motor, the drive gear meshing with the driven gear ring, and a line scan camera fixedly installed on the inner ring of the driven gear ring.

[0009] Preferably, the striking assembly includes a mounting base fixedly installed on the main frame, a drive cylinder rotatably connected to the mounting base, a connecting frame rotatably connected to the telescopic end of the drive cylinder, a striking arm fixedly connected to the connecting frame, a rotating seat rotatably connected to the upper part of the striking arm, the rotating seat being fixedly connected to the main frame, a long striking head fixedly connected to the striking arm, a lower striking head fixedly connected to the lower part of the striking arm, the lower striking head having an isosceles trapezoidal cross-section, a carrying piece fixedly connected to the inner side of the lower striking head, a striking frame provided on the outer side of the striking arm, the striking frame rotatably connected to the main frame, and horizontal striking heads symmetrically slidably connected to the bottom of the striking frame, with tension springs fixedly connected between the horizontal striking heads.

[0010] Preferably, the sound detection component includes a collecting microphone, a detection host, and an indicator light. The collecting microphone is fixedly installed on the striking frame, and the detection host and indicator light are fixedly installed on the main frame.

[0011] Preferably, the walking assembly includes a walking wheel and a walking motor, with the output end of the walking motor fixedly connected to the walking wheel, and both the walking wheel and the walking motor are fixedly installed on the lower part of the main frame.

[0012] Preferably, the marking assembly includes an electric actuator, the output end of which is fixedly connected to a marking pen.

[0013] Preferably, an auxiliary light is fixedly mounted on the inner ring of the driven gear ring, located outside the line scan camera.

[0014] Preferably, a surrounding plate is fixedly connected to one side of the horizontal striking head, and a contact component is installed on both the surrounding plate and the other side of the horizontal striking head. The contact component can generate a tightening force on the bolt. The contact component includes an outer shell, a contact post is slidably connected inside the outer shell, a contact spring is provided inside the outer shell, the contact spring provides elastic support force for the contact post, and the end of the contact post is provided with a conical portion.

[0015] This invention provides a rail inspection device for rail transit. It has the following advantages: 1. The present invention, through the set visual inspection component, can take pictures of various positions in the railway track loop, ensuring the comprehensiveness of the inspection.

[0016] 2. The present invention, through its set-up striking components, can generate longitudinal and lateral striking forces, enabling comprehensive inspection of rails, bolts, and fasteners. The inspection is reliable, requires no manual striking, and has high inspection efficiency.

[0017] 3. This invention, through the setting of a sound detection component and an observation camera, uses the sound generated by the tapping component to determine whether there is any abnormality in each component, and the observation camera can observe whether bolts or fasteners are loose, thus ensuring the safety of rail transit operation. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention in use; Figure 2 This is a schematic diagram of the frame component in this invention; Figure 3 This is a schematic diagram of the structure of the visual detection component in this invention; Figure 4 This is a schematic diagram of the striking component in this invention; Figure 5 This is a structural schematic diagram of the striking component in this invention from another perspective; Figure 6 This is a schematic diagram of the striking arm portion in this invention; Figure 7 This is a schematic diagram of the structure of the marking component in this invention; Figure 8 This is a schematic diagram of the contact component in the tapping state in Embodiment 2 of the present invention; Figure 9This is a schematic diagram of the contact component in Embodiment 2 of the present invention.

[0019] Among them, 1. Rail components; 2. Frame assembly; 3. Vision inspection assembly; 4. Impact assembly; 5. Sound detection assembly; 6. Walking assembly; 7. Illumination spotlight; 8. Marking assembly; 9. Observation camera; 201. Main frame; 202. Handle; 203. External frame; 301. Mounting bracket; 302. Ring slide rail; 303. Line scan camera; 304. Servo motor; 305. Drive gear; 306. Driven gear ring; 307. Auxiliary light; 401. Drive cylinder; 402. Mounting base; 403. Rotating base; 40 4. Striking arm; 405. Long striking head; 406. Striking frame; 4041. Lower striking head; 4042. Carrying piece; 407. Horizontal striking head; 408. Tension spring; 409. Connecting frame; 601. Traveling wheel; 602. Traveling motor; 501. Indicator light; 502. Detection host; 503. Microphone collection; 801. Electric push rod; 802. Marking pen; 10. Contact assembly; 1001. Outer shell; 1002. Contact spring; 1003. Contact post; 1004. Conical part; 11. Surrounding plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: like Figures 1-7 As shown, this embodiment of the invention provides a rail inspection device for rail transit, used to inspect rail components 1. Rail components 1 include rails, fasteners, bolts, sleepers and other parts. During inspection, it is necessary not only to ensure that the rails are in good condition, but also to ensure that the bolts and fasteners are not loose, in order to ensure the normal operation of rail transit.

[0022] include: refer to Figure 1 , Figure 2 Frame assembly 2 spans the rail component 1 and is used to provide an installation position; frame assembly 2 includes a main frame 201, with handles 202 fixedly connected to both ends of the main frame 201, and an external frame 203 fixedly connected to the middle of the main frame 201. Frame component 2 can be assembled from aluminum alloy materials, ensuring that the overall strength meets the usage requirements.

[0023] refer to Figure 1 , Figure 3The visual inspection component 3 is located on the rear side of the frame component 2 and is used to capture images of the circular position of the railway track. The visual inspection component 3 includes a mounting bracket 301 fixedly installed on the main frame 201. A ring slide rail 302 is fixedly connected to the lower part of the mounting bracket 301. A driven gear ring 306 is slidably connected inside the ring slide rail 302. A servo motor 304 is fixedly installed on the outer side of the ring slide rail 302. A drive gear 305 is fixedly connected to the output end of the servo motor 304. The drive gear 305 meshes with the driven gear ring 306. A line scan camera 303 is fixedly installed on the inner ring of the driven gear ring 306. An auxiliary light 307 is fixedly installed on the inner ring of the driven gear ring 306 and outside the line scan camera 303. During visual inspection, when the entire device moves to the inspection position, the servo motor 304 operates under the control of the external power supply and controller, driving the drive gear 305 to rotate. The drive gear 305 then drives the driven gear ring 306 to rotate. The driven gear ring 306 has a notch, which is used for device insertion and to prevent bolts and fasteners from colliding with the driven gear ring 306. The rotation of the driven gear ring 306 drives the line scan camera 303 to move synchronously. The line scan camera 303 can take pictures of the upper, side, and lower surfaces of the rail from all angles, directly capturing images of whether the rail has cracks, corrosion, or foreign object intrusion, ensuring that the rail is in good condition. The auxiliary light 307 provides auxiliary lighting to ensure good shooting results even in nighttime environments. One or two line scan cameras 303 can be installed to ensure comprehensive image capture. Since there is only one servo motor 304, the driven gear ring 306 can reciprocate, with each rotation angle ranging from 180° to 200°. The specific rotation angle can be freely selected according to the actual situation.

[0024] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6The striking component 4 is located at the side end of the frame component 2 and is used to generate longitudinal and lateral striking forces. The striking component 4 includes a mounting base 402 fixedly mounted on the main frame 201. A drive cylinder 401 is rotatably connected to the mounting base 402. A connecting frame 409 is rotatably connected to the telescopic end of the drive cylinder 401. A striking arm 404 is fixedly connected to the connecting frame 409. A rotating seat 403 is rotatably connected to the upper part of the striking arm 404. The rotating seat 403 is fixedly connected to the main frame 201. A long striking head 405 is fixedly connected to the upper part of the striking arm 404, and a lower striking head 4041 is fixedly connected to the lower part of the striking arm 404. The cross-sectional shape of the lower striking head 4041 is an isosceles trapezoid. A carrying piece 4042 is fixedly connected to the inner side of the lower striking head 4041. A striking frame 406 is provided on the outer side of the striking arm 404. The striking frame 406 is rotatably connected to the main frame 201. A horizontal striking head 407 is symmetrically slidably connected to the bottom of the striking frame 406. A tension spring 408 is fixedly connected between the horizontal striking heads 407. During the striking operation, in the non-striking state, the drive cylinder 401 works under the action of the external air source and controller, and drives the striking arm 404 to rotate outward through the connecting frame 409. During the outward rotation, the tension spring 408 will pull the two horizontal striking heads 407 to press against the lower striking head 4041. The carrying plate 4042 will contact and drive the horizontal striking head 407 and the striking frame 406 to rotate outward. The horizontal striking head 407 will not contact the bolts or fasteners, and will not affect the normal forward movement of the whole. During the striking action, the drive cylinder 401 operates under the influence of an external air source and controller, driving the striking arm 404 to rotate inward via the connecting bracket 409. The long striking head 405 strikes the rail to produce a sound, while the lower striking head 4041, due to its shape, causes the two horizontal striking heads 407 to move away from each other. The horizontal striking heads 407 overcome the elastic force of the tension spring 408 and strike the bolts and fasteners, producing another sound. The two sounds are those from the rail and the bolts / fasteners, respectively. Simultaneously, the camera 9 takes pictures of the state of the bolts and fasteners during the striking action to determine whether they have become loose. Therefore, it can detect two positions with a single striking action, providing comprehensive and efficient detection.

[0025] refer to Figure 1 , Figure 2 The sound detection component 5 is located at the striking component 4 and is used to collect and compare striking sounds. The sound detection component 5 includes a collecting microphone 503, a detection host 502, and an indicator light 501. The collecting microphone 503 is fixedly installed on the striking frame 406, and the detection host 502 and the indicator light 501 are fixedly installed on the main frame 201. During sound detection, the collecting microphone 503 can collect the sound of two taps and wirelessly transmit it to the detection host 502. The detection host 502 uses its built-in filtering circuit, amplification circuit, processor and other components to compare the sound. If the sound waveform is the same as the sound waveform under normal conditions, it is qualified; otherwise, it is unqualified. Then, the indicator light 501 emits red or green light to help the staff judge the detection status in time. For example, the processor is composed of a K210 chip and a PYAI-K210 motherboard.

[0026] refer to Figure 1 , Figure 2 The walking component 6 is located below the frame component 2 and is used to provide walking function. The walking component 6 includes a walking wheel 601 and a walking motor 602. The output end of the walking motor 602 is fixedly connected to the walking wheel 601. Both the walking wheel 601 and the walking motor 602 are fixedly installed on the lower part of the main frame 201. During the walking operation, the walking motor 602 works under the action of the external power supply and controller, driving the walking wheel 601 to rotate. The walking wheel 601 comes into contact with the rail, and the overall movement function is achieved by using the friction between the two.

[0027] refer to Figure 1 The lighting spotlight 7 is mounted on the frame assembly 2 and is used to provide lighting functions; the lighting spotlight 7 is used to selectively provide lighting according to needs, and the lighting intensity is high.

[0028] refer to Figure 1 , Figure 7 The marking component 8 is located on the side of the frame component 2 and is used to provide marking function; the marking component 8 includes an electric push rod 801, and a marking pen 802 is fixedly connected to the output end of the electric push rod 801. During the marking operation, the electric push rod 801 works under the action of the external power supply and controller, which drives the marking pen 802 to work. The tip of the marking pen 802 comes into contact with the rail, thereby realizing the marking function.

[0029] Observation camera 9 is located at the end of frame assembly 2 and is used to observe the status of bolts and fasteners.

[0030] Working principle: First, place the entire assembly on the rails; When the walking motor 602 is working, it drives the walking wheel 601 to rotate. The walking wheel 601 comes into contact with the rail, and the overall movement function is achieved by using the friction between the two. When the entire device moves to the detection position, the servo motor 304 works, driving the drive gear 305 to rotate. The drive gear 305 drives the driven gear ring 306 to rotate. The rotation of the driven gear ring 306 will drive the line scan camera 303 to move synchronously. The line scan camera 303 can take pictures of the upper surface, side surface and lower surface of the rail from all directions. It can directly capture whether the rail has cracks, corrosion, foreign object intrusion and other conditions, to ensure that the rail is in good condition. During the striking action, the drive cylinder 401 operates, which drives the striking arm 404 to rotate inward via the connecting bracket 409. The long striking head 405 strikes the rail to produce a sound, while the lower striking head 4041, due to its shape, causes the two horizontal striking heads 407 to move away from each other. The horizontal striking heads 407 overcome the elastic force of the tension spring 408 and strike the bolts and fasteners, producing a sound again. The two sounds are those produced by the rail and the bolts and fasteners, respectively. At the same time, the observation camera 9 takes pictures of the state of the bolts and fasteners during the striking action to determine whether the bolts and fasteners have become loose. Therefore, it can achieve the function of detecting two positions with one striking action, which is comprehensive and efficient. The microphone 503 can collect the sound of two taps and wirelessly transmit it to the detection host 502. The detection host 502 uses its built-in filtering circuit, amplification circuit, processor and other components to compare the sound. If the sound waveform is the same as the sound waveform under normal conditions, it is qualified; otherwise, it is unqualified. Then, the indicator light 501 emits red or green light to help the staff judge the detection status in time.

[0031] Example 2: refer to Figure 8 , Figure 9 The difference from Embodiment 1 is that: a surrounding plate 11 is fixedly connected to one side of the horizontal striking head 407, and a contact component 10 is installed on both the surrounding plate 11 and the other side of the horizontal striking head 407. The contact component 10 can generate a tightening force on the bolt. The contact component 10 includes an outer shell 1001, a contact post 1003 is slidably connected inside the outer shell 1001, and a contact spring 1002 is provided inside the outer shell 1001. The contact spring 1002 provides elastic support force for the contact post 1003, and the end of the contact post 1003 is provided with a conical part 1004. The purpose of the contact component 10 is to generate a tightening force on the bolt while it is being struck, so as to tighten the bolt during routine maintenance and inspection, prevent the bolt from loosening, and save the subsequent manual tightening of the bolt. During operation, the horizontal striking head 407 moves closer to the bolt, causing the contact component 10 on it to approach the bolt. The conical part 1004 strikes the bolt, and under the action of the compressed deformation of the contact spring 1002, it continuously applies pressure to the bolt head, thus tightening the bolt. Since the two bolts are tightened in different directions, a surrounding plate 11 is provided to change the striking position of the contact component 10 without affecting the normal rotation of the bolt head. This allows the bolts on both sides to rotate in both clockwise and counterclockwise directions, ensuring that both bolts can be tightened.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rail inspection device for rail transit, used for inspecting rail components (1), characterized in that, include: Frame assembly (2), which spans the rail piece (1) and provides an installation location; A visual inspection component (3) is located on the rear side of the frame component (2) and is used to take pictures of the circular position of the rail. A striking component (4) is provided at the side end of the frame component (2) for generating longitudinal and lateral striking forces; Sound detection component (5), which is located at the striking component (4), is used to collect striking sounds and compare and detect them; Walking component (6), which is located below frame component (2) and is used to provide walking function; A spotlight (7) is mounted on the frame assembly (2) and is used to provide lighting functionality; A marking component (8) is disposed on the side of the frame component (2) and is used to provide marking functionality; An observation camera (9) is located at the end of the frame assembly (2) and is used to observe the status of bolts and fasteners.

2. The rail inspection device for rail transit according to claim 1, characterized in that: The frame component (2) includes a main frame (201), with handles (202) fixedly connected to both ends of the main frame (201) and an external frame (203) fixedly connected to the middle of the main frame (201).

3. The rail inspection device for rail transit according to claim 2, characterized in that: The visual inspection component (3) includes a mounting bracket (301) fixedly installed on the main frame (201). A ring slide rail (302) is fixedly connected to the lower part of the mounting bracket (301). A driven gear ring (306) is slidably connected inside the ring slide rail (302). A servo motor (304) is fixedly installed on the outer side of the ring slide rail (302). A drive gear (305) is fixedly connected to the output end of the servo motor (304). The drive gear (305) meshes with the driven gear ring (306). A line scanning camera (303) is fixedly installed on the inner ring of the driven gear ring (306).

4. A rail inspection device for rail transit according to claim 2, characterized in that: The striking assembly (4) includes a mounting base (402) fixedly mounted on the main frame (201). A drive cylinder (401) is rotatably connected to the mounting base (402). A connecting frame (409) is rotatably connected to the telescopic end of the drive cylinder (401). A striking arm (404) is fixedly connected to the connecting frame (409). A rotating seat (403) is rotatably connected to the upper part of the striking arm (404). The rotating seat (403) is fixedly connected to the main frame (201). A long striking head (405) is fixedly connected to the striking arm (404). The lower part of the striking arm (404) is fixedly connected to a lower striking head (4041). The cross-sectional shape of the lower striking head (4041) is an isosceles trapezoid. The inner side of the lower striking head (4041) is fixedly connected to a carrying piece (4042). The outer side of the striking arm (404) is provided with a striking frame (406). The striking frame (406) is rotatably connected to the main frame (201). The bottom of the striking frame (406) is symmetrically slidably connected to a horizontal striking head (407). A tension spring (408) is fixedly connected between the horizontal striking heads (407).

5. A rail inspection device for rail transit according to claim 2, characterized in that: The sound detection component (5) includes a collection microphone (503), a detection host (502), and an indicator light (501). The collection microphone (503) is fixedly installed on the tapping frame (406), and the detection host (502) and the indicator light (501) are fixedly installed on the main frame (201).

6. A rail inspection device for rail transit according to claim 2, characterized in that: The walking component (6) includes a walking wheel (601) and a walking motor (602). The output end of the walking motor (602) is fixedly connected to the walking wheel (601). The walking wheel (601) and the walking motor (602) are both fixedly installed on the lower part of the main frame (201).

7. A rail inspection device for rail transit according to claim 1, characterized in that: The marking assembly (8) includes an electric push rod (801), and a marking pen (802) is fixedly connected to the output end of the electric push rod (801).

8. A rail inspection device for rail transit according to claim 3, characterized in that: An auxiliary light (307) is fixedly installed on the inner ring of the driven gear ring (306) and on the outside of the line scan camera (303).

9. A rail inspection device for rail transit according to claim 4, characterized in that: A surrounding plate (11) is fixedly connected to one side of the horizontal striking head (407). A contact assembly (10) is installed on both the surrounding plate (11) and the other side of the horizontal striking head (407). The contact assembly (10) can generate a tightening force on the bolt. The contact assembly (10) includes an outer shell (1001). A contact post (1003) is slidably connected inside the outer shell (1001). A contact spring (1002) is provided inside the outer shell (1001). The contact spring (1002) provides elastic support force for the contact post (1003). The end of the contact post (1003) is provided with a conical part (1004).

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