A track inspection device and method

Abstract

This invention relates to the field of railway track technology and discloses a track inspection device and method. The track inspection device includes a base plate, a drive unit on the top of the base plate, a set of frames connected to the drive unit, and movable wheels on both sides of the lower part of the frames. A motor is connected to the input end of each movable wheel, and a disc is provided between the motor and the frame, with a direction sensor on the disc. A second motor is located at the bottom center of the base plate, and a support plate is located at the bottom of the second motor. A limiting part is located at the bottom of the support plate, and the limiting part is adapted to a side groove on the side of the track. A detection module and a phase acquisition module are installed on the limiting part. Beneficial effects: This solves the problem of needing to manually inspect tracks in existing systems and reduces the labor required for manual inspection operations.

Description

Technical Field

[0001] This invention relates to the field of railway track technology, and more specifically, to a track inspection device and method. Background Technology

[0002] A power supply rail, also known as a third rail, is a dedicated rail installed alongside urban rail lines such as subways and light rail systems. It works in conjunction with current collectors, collector shoes, and other components to provide power to all equipment on the rail transit trains.

[0003] The contact between rail transit trains and the power supply rails is physical, and the trains operate at high speeds. Specifically, the train's current collector contacts and slides on the power supply rails, transmitting power to the train. However, during the sliding process, high-voltage arcs are generated, forming weld points on the rail surface and creating irregular scratches, causing wear on the rail surface. This damage affects the performance of both the power supply rails and the current collectors, necessitating routine inspection of the rail surface during maintenance. While some automated track inspection equipment can perform basic rail surface inspection, it suffers from two major drawbacks: first, the lack of coordination between the phase acquisition and detection modules makes it impossible to directly trace the location of damage; second, the adaptive adjustment mechanism and the limit stabilization mechanism operate independently, leading to instability after adjustment when there are significant track height differences, thus failing to meet the requirements for efficient and accurate inspection of power supply rails. Summary of the Invention

[0004] The technical objective of this invention is to address the above-mentioned shortcomings by providing a track detection device and method to solve the problems mentioned above.

[0005] The technical solution of this invention is implemented as follows:

[0006] According to one aspect of the present invention, a track detection device is provided.

[0007] The device includes a base plate, a drive unit on top of which is connected to a frame. Both sides of the lower part of the frame have casters, and the input ends of the casters are connected to a motor. A disc is located between the motor and the frame, and the disc has a direction sensor for identifying the device's direction of travel. A second motor is located at the center of the bottom of the base plate, and a support plate is located at the bottom of the second motor. A limiting part is located at the bottom of the support plate, and this limiting part is adapted to the side groove of the track. A detection module and a phase acquisition module are installed on the limiting part. The drive unit is used to drive the frame to adaptively adjust its angle to accommodate the track height difference. The detection module is used to detect wear, weld points, and scratches on the power supply rail surface. The phase acquisition module is used to acquire and store images of the power supply rail surface.

[0008] Preferably, the drive unit includes a set of first support columns located at the center of both sides of the top of the base plate, a second support column located inside the first support column, and the bottom of the second support column fixed to the top side of the base plate; a third support column is located on both sides of the top of the base plate perpendicular to the second support column, and a connecting shaft is provided transversely between the third support columns, with a second bevel gear sleeved at one end of the connecting shaft located inside the third support column; a first shaft and a second shaft are respectively provided transversely between the upper parts of the first support columns and the second support columns on both sides; a first bevel gear that meshes with the second bevel gear is located at the inner end of the first shaft; and a third bevel gear that meshes with the second bevel gear is located at the inner end of the second shaft.

[0009] The drive unit achieves adaptive oscillation within a ±15° range of the frame through a bridge transmission of the first bevel gear, the second bevel gear, and the third bevel gear. Compared with single gear transmission, this reduces transmission jamming caused by track height differences and improves adjustment stability.

[0010] Preferably, the spacing between the frames is adapted to the spacing formed between two adjacent tracks.

[0011] Preferably, a hand-held push rod is provided at the center of one side of the base plate.

[0012] Preferably, the frame is configured as an inverted U-shaped structure, with a protruding V-shaped groove at the top center of the groove inside the inverted U-shaped structure, and the outer ends of the first shaft and the second shaft respectively inserted into the middle of the V-shaped groove.

[0013] Preferably, a rotating mechanism is provided between the detection module and the phase acquisition module and the limiting part.

[0014] Preferably, the limiting part includes a second track located at the center of both sides of the bottom of the support plate, a matching second slider on the second track, a horizontal plate one at the bottom of the second slider, support rods on both sides of the bottom of the horizontal plate one, a horizontal plate two at the bottom of the support rods, and a number of limiting abutments at the bottom of the horizontal plate two.

[0015] Preferably, a rotating disk is provided at the bottom center of the support plate, and an output shaft is provided at the top center of the rotating disk. The output shaft passes through the support plate and is connected to the second motor. A rotating plate is provided at the bottom center of the rotating disk, and a shaft is provided at both ends of the bottom of the rotating plate. A symmetrical drive rod is provided at the bottom of the shaft, and the end of the drive rod away from the shaft is movably connected to the bottom center of the first horizontal plate.

[0016] Preferably, a first track is provided on one side of both sides of the support plate, and a first slider is provided on the first track. The bottom of the first slider is fixed on the top two sides of the horizontal plate. Limiting blocks are provided on the corresponding sides of the first track on both sides.

[0017] According to another aspect of the present invention, a method for track detection is provided.

[0018] The orbit detection method includes the following steps:

[0019] Place the device on the track where it needs to be tested;

[0020] The drive motor starts running;

[0021] Once the motor drives the moving wheel to move on the track, the track is detected by the detection module during the movement. When the detection module detects that the wear depth of the rail surface is greater than or equal to 0.3mm or the diameter of the weld point is greater than or equal to 5mm, the image acquisition module automatically focuses on the area and marks the image, and at the same time, the detection data is associated with and stored with the corresponding image.

[0022] The second drive motor will start running within 5-10 seconds after the equipment starts moving.

[0023] Motor 2 drives the rotating disk to rotate at an angle;

[0024] The rotating disk drives the rotating plate to move, and the rotating plate drives the drive rods on both sides to achieve stretching or pushing motion;

[0025] When the two drive rods are pushed to both sides at the same time, the limit stop wheel abuts against the side groove of the track, maintaining the stability of the entire equipment during the inspection operation.

[0026] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0027] 1. The three-bevel gear bridge transmission of the drive unit enables the frame to swing adaptively by ±15°, ensuring that the equipment can still move stably when the track height difference is less than or equal to 50mm; the double-track slider of the limit unit cooperates with the limit stop wheel to control the shaking amplitude of the equipment during the detection process within ±2mm.

[0028] 2. When the equipment is moving and encounters different heights on the two sides of the track, it can automatically adjust according to the different concave and convex surfaces to maintain the stability of the entire equipment. This avoids the situation of tipping over or stopping due to the influence of different track heights, solves the trouble of manual inspection required in the existing system, and reduces the labor generated by manual inspection operations.

[0029] 3. By setting a limiting part at the bottom of the base plate, the limiting abutment wheel of the limiting part is pushed to both sides at the same time, and the limiting abutment wheel will abut against the side of the track on both sides, so that the equipment plays a certain limiting role during the movement of the equipment, maintains the stability of the entire equipment, and facilitates the testing. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the connection structure between the limiting part and the base plate according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the limiting part structure according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the drive unit structure according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the connection structure between the support column and the base plate according to an embodiment of the present invention.

[0036] In the picture:

[0037] 1. Base plate; 2. Frame; 3. Casters; 4. Motor 1; 5. Disc; 6. Motor 2; 7. Support plate; 8. Limiting part; 9. First support column; 10. Second support column; 11. Third support column; 12. Connecting shaft; 13. Second bevel gear; 14. First shaft; 15. Second shaft; 16. First bevel gear; 17. Third bevel gear; 18. Hand push rod; 19. Second track; 20. Second slider; 21. Horizontal plate 1; 22. Support rod; 23. Horizontal plate 2; 24. Limiting stop wheel; 25. Rotating disk; 26. Rotating plate; 27. Shaft; 28. Drive rod; 29. ​​First track; 30. First slider; 31. Limiting stop. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Example 1

[0040] like Figures 1-5 As shown in the document:

[0041] This invention provides a track inspection device, including a base plate 1. A drive unit is provided on the top of the base plate 1, and a set of frames 2 are connected to the drive unit. The lower two sides of the frame 2 are provided with moving wheels 3. The input end of the moving wheels 3 is connected to a motor 4. A disc 5 is provided between the motor 4 and the frame 2. The disc 5 is provided with a direction sensor for identifying the direction of movement of the device. A second motor 6 is provided at the bottom center of the base plate 1. A support plate 7 is provided at the bottom of the second motor 6. A limiting part 8 is provided at the bottom of the support plate 7. The limiting part 8 is adapted to the side groove of the track side. A detection module and a phase acquisition module are installed on the limiting part 8. The drive unit is used to drive the frame 2 to adaptively adjust the angle to adapt to the track height difference. The detection module is used to detect wear, weld points and scratches on the power supply rail surface. The phase acquisition module is used to acquire and store images of the power supply rail surface.

[0042] The orientation sensor, detection module, and phase acquisition module are all existing structures.

[0043] Optionally, the spacing between the two side frames 2 can be adjusted according to site requirements.

[0044] The drive unit includes a set of first support columns 9 located at the center of both sides of the top of the base plate 1. A second support column 10 is located inside the first support column 9, and the bottom of the second support column 10 is fixed to the top side of the base plate 1. A third support column 11 is located on both sides of the top of the base plate 1, perpendicular to the second support column 10. A connecting shaft 12 passes through the third support column 11, and a second bevel gear 13 is fitted onto one end of the connecting shaft 12 inside the third support column 11. A first shaft 14 and a second shaft 15 pass through the upper parts of the first support column 9 and the second support column 10 on both sides, respectively. The inner end of the first shaft 14 is provided with a first bevel gear 16 that meshes with the second bevel gear 13; the inner end of the second shaft 15 is provided with a third bevel gear 17 that meshes with the second bevel gear 13. The spacing between the frame bodies 2 is adapted to the spacing formed between two adjacent tracks. A hand-held push rod 18 is provided at the center of one side of the base plate 1. The frame body 2 is set as an inverted U-shaped structure. A protruding V-shaped groove is provided at the top center of the groove in the inverted U-shaped structure. The outer ends of the first shaft 14 and the second shaft 15 are respectively inserted into the middle of the V-shaped groove. A rotating mechanism is provided between the detection module and the phase acquisition module and the limiting part.

[0045] Optionally, the rotating mechanism is an existing structure, mainly for the purpose of facilitating the rotation of the detection module or the phase acquisition module to enable multi-angle acquisition or detection from different orientations.

[0046] Optionally, a hand-operated push rod 18 can be detachably mounted on the side of the base plate 1, allowing the device to be pushed manually.

[0047] The limiting part 8 includes a second track 19 located at the center of both sides of the bottom of the support plate 7. A matching second slider 20 is provided on the second track 19. A horizontal plate 21 is provided at the bottom of the second slider 20. Support rods 22 are provided on both sides of the bottom of the horizontal plate 21. A second horizontal plate 23 is provided at the bottom of the support rods 22. Several limiting rollers 24 are provided at the bottom of the second horizontal plate 23. A rotating disk 25 is located at the center of the bottom of the support plate 7. An output shaft is located at the center of the top of the rotating disk 25. The output shaft passes through the support plate 7 and connects to the second motor 6. A rotating plate 26 is provided at the bottom center of the rotating disk 25. A shaft 27 is provided at both ends of the bottom of the rotating plate 26. A symmetrical drive rod 28 is provided at the bottom of the shaft 27. The end of the drive rod 28 away from the shaft 27 is movably connected to the bottom center of the horizontal plate 21. A first track 29 is provided on one side of both sides of the support plate 7. A first slider 30 is provided on the first track 29. The bottom of the first slider 30 is fixed on the top two sides of the horizontal plate 21. A limit stop 31 is provided on the corresponding side of the first track 29 on both sides.

[0048] Among them, the limiting wheel 24 is made of elastic and wear-resistant material, and a groove is opened in the center of the side. Several steel balls are evenly embedded in the groove, and the protruding surface of the steel balls contacts the groove on the side of the track. Example 2

[0049] A method for orbit detection includes the following steps:

[0050] S101: Place the device on the track that needs to be inspected;

[0051] S103: Drive motor 4 is running;

[0052] S105: Motor 4 drives the moving wheel 3 to walk on the track. During the walking process, the detection module detects the track. When the detection module detects that the wear depth of the track surface is greater than or equal to 0.3mm or the diameter of the weld point is greater than or equal to 5mm, the image acquisition module automatically focuses on the area and marks the image. At the same time, the detection data is associated with and stored with the corresponding image.

[0053] S107: Start motor 6 within 5-10 seconds after the equipment starts moving;

[0054] S109: Motor 26 drives the rotating disk 25 to rotate at an angle;

[0055] S1011: The rotating disk 25 drives the rotating plate 26 to move, and the rotating plate 26 drives the two drive rods 28 on both sides to achieve stretching or pushing motion;

[0056] S1013: When the two drive rods 28 are pushed to both sides at the same time, the limit stop wheel 24 abuts against the side groove of the track, maintaining the stability of the entire equipment during the inspection operation.

[0057] Detailed usage and function of this embodiment:

[0058] The device is placed on the track to be tested, and the drive motor 4 runs synchronously. Motor 4 drives the connected moving wheel 3, which moves on the track. During the movement, the direction of movement is automatically identified by the direction sensor on the disc 5. During the movement, because the V-shaped groove in the inverted U-shaped groove of the frame 2 is in contact with the outer end of the second shaft 15, when the track height changes and the frame 2 tilts, the V-shaped groove generates a radial thrust on the second shaft 15, causing the second shaft 15 to rotate. This, in turn, drives the third bevel gear 17 to mesh with the second bevel gear 13. The second bevel gear 13 drives the first bevel gear 16. At this time, the three bevel gears... The gears form a bridge-like transmission motion. When the track has variations such as elevation changes, the first bevel gear 16, the second bevel gear 13, and the third bevel gear 17 will swing flexibly with the frame 2 according to the track shape. During the swinging process of the frame 2, in addition to transmitting power, the first bevel gear 16, the second bevel gear 13, and the third bevel gear 17 can also synchronously adjust the posture of the base plate 1 through the interaction between the gears, so that the base plate 1, the detection module installed on it, and the limiting part set at the bottom always maintain a relatively stable state, avoiding tilting or jamming due to uneven track, thereby achieving smooth and adaptive operation of the device on the track.

[0059] Simultaneously, within 5-10 seconds after the equipment starts, motor 26 is activated. Motor 26 drives the rotating disk 25 to rotate, which in turn drives the rotating plate 26 connected to the bottom to move. After the rotating plate 26 moves, it drives the shafts 27 connected to both ends of the bottom. When the shafts 27 on both sides rotate synchronously in the same direction, the shafts 27 will pull the connected drive rods 28, causing the two drive rods 28 to pull the horizontal plate 21 to move to both sides or to the center at the same time. When the horizontal plate 21 moves to both sides at the same time, the horizontal plate 21 carries the support rod 22 connected below. The support rod 22 drives the horizontal plate 23, and the horizontal plate 23 drives the lower limit wheel 24 to abut against the side of the track to limit movement. In this way, the entire equipment will always be in a stable state during the movement.

[0060] Through the above specific embodiments, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A track detection device, characterized in that The utility model relates to a kind of track inspection vehicle, including bottom plate (1), the top of bottom plate (1) is equipped with driving part, a group of frame body (2) is connected on driving part, the lower portion both sides of frame body (2) are equipped with moving wheel (3), the input end of moving wheel (3) is connected with motor one (4), and motor one (4) is equipped with disc (5) between frame body (2), disc (5) is equipped with direction sensor for identifying equipment walking direction; The bottom center of bottom plate (1) is equipped with motor two (6), the bottom of motor two (6) is equipped with support plate (7), the bottom of support plate (7) is equipped with limiting portion (8), limiting portion (8) is matched with the side groove of track side; Detection module and phase acquisition module are installed on limiting portion (8); Wherein, driving part is used to drive frame body (2) to adaptively adjust angle to adapt track height difference; Detection module is used to detect wear, weld and scratch of power supply rail surface; Phase acquisition module is used to collect power supply rail surface image and store; Driving part includes a group of first support column (9) arranged at the top of bottom plate (1) both sides center position, the inner side of first support column (9) is equipped with second support column (10), and the bottom of second support column (10) is fixed on the top side of bottom plate (1);The top of bottom plate (1) and second support column (10) are vertically equipped with third support column (11) on both sides, and crosswise equipped with connecting shaft (12) between third support column (11), and the inner side of one end of connecting shaft (12) is located third support column (11) and is equipped with second bevel gear (13) with sleeve;First shaft (14) and second shaft (15) are respectively crosswise equipped between the upper portion of first support column (9) and second support column (10) arranged on both sides;The inner end of first shaft (14) is equipped with first bevel gear (16) engaged with second bevel gear (13);The inner end of second shaft (15) is equipped with third bevel gear (17) engaged with second bevel gear (13);Wherein, driving part is realized frame body (2) ±15 ° range adaptive swing by the bridge transmission of first bevel gear (16), second bevel gear (13) and third bevel gear (17), compared with single gear transmission, can reduce the transmission jam caused by track height difference, and improve the adjustment stability; Frame body (2) is arranged as inverted U-shaped structure, and protruding V-shaped groove is arranged at the top center of the groove of inverted U-shaped structure, and the outer end of first shaft (14) and second shaft (15) is respectively inserted in the middle part of V-shaped groove.

2. A track detection device according to claim 1, characterised in that The spacing between frame body (2) is matched with the spacing formed between adjacent two tracks.

3. A track detection device according to claim 2, characterised in that Hand-held push rod (18) is arranged at the center of one side of bottom plate (1).

4. A track detection device according to claim 3, characterised in that Rotating mechanism is arranged between detection module, phase acquisition module and limiting portion.

5. A track detection device according to claim 4, characterised in that Limiting portion (8) includes second track (19) arranged at the bottom of support plate (7) both sides center, and second slide block (20) is arranged on second track (19), the bottom of second slide block (20) is equipped with horizontal plate one (21), the bottom both sides of horizontal plate one (21) are equipped with support rod (22), the bottom of support rod (22) is equipped with horizontal plate two (23), and the bottom of horizontal plate two (23) is equipped with a plurality of limiting abutment wheel (24).

6. A track detection device according to claim 5, characterised in that The bottom center of the support plate (7) is provided with a rotating disc (25), the top center of the rotating disc (25) is provided with an output shaft, the output shaft penetrates through the support plate (7) and is connected with the motor two (6); The bottom center of the rotating disc (25) is provided with a rotating plate (26), the bottom two ends of the rotating plate (26) are respectively provided with shaft rods (27), the bottom of the shaft rod (27) is provided with symmetrical drive rods (28), one end of the drive rod (28) away from the shaft rod (27) is movably connected at the bottom center of the horizontal plate one (21).

7. A track detection device according to claim 6, characterised in that The two sides of the support plate (7) are both provided with first rails (29), the first rails (29) are provided with matched first sliding blocks (30), the bottom of the first sliding block (30) is fixed on the top of the two sides of the horizontal plate one (21); The corresponding side edges of the two first rails (29) are respectively provided with limiting stoppers (31).

8. A method of track detection, characterized in that The track detection device of claim 7 comprises the following steps: Place the device on the track to be detected; Drive the motor one (4) to run; The motor one (4) drives the moving wheel (3) to walk on the track, and the detection module detects the track in the walking process, when the detection module detects that the track surface wear depth is greater than or equal to 0.3mm or the welding point diameter is greater than or equal to 5mm, the image acquisition module automatically focuses on the area and marks the image, and the detection data and the corresponding image are associated and stored; Start driving the motor two (6) to run within 5-10 seconds after the device starts walking; The motor two (6) drives the rotating disc (25) to rotate at an angle; The rotating disc (25) drives the rotating plate (26) to move, and the rotating plate (26) drives the two drive rods (28) to realize stretching or pushing movement; When the two drive rods (28) simultaneously push to both sides, the limiting resistance wheel (24) abuts against the side groove of the track, and the stability of the whole device is maintained during the detection operation.

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