A mobile device for tunnel surface inspection equipment

Abstract

This invention provides a mobile device for tunnel surface inspection equipment, including an image acquisition module mounted on the mobile device via a mounting mechanism. The mobile device includes a base, an adjustable spacing assembly, and a roller mechanism. The roller mechanism is mounted on the adjustable spacing assembly, which includes an adjustable lead screw, a first motor, and a synchronous pulley mechanism. The adjustable lead screw is symmetrically and parallelly mounted below the base via mounting blocks. Both ends of the adjustable lead screw have threads, with one end having two threads with opposite directions of rotation. The first motor is fixedly mounted on the base, and its output drives the adjustable lead screw to rotate via a gear pair. The roller mechanism is arranged in pairs. This mobile device reduces equipment vibration during image acquisition, resulting in clearer image acquisition. Utilizing adjustable rollers, it is suitable for tunnels with various track spacings.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel engineering inspection technology, and in particular relates to a mobile device for tunnel surface inspection equipment. Background Technology

[0002] Tunnels are crucial infrastructure for highways and rail transit. With prolonged operation, tunnel structures, primarily made of concrete, exhibit surface defects such as water leakage, hollow areas, cracks, and spalling, as well as cross-sectional deformation. Therefore, regular surface inspections are necessary. Currently, tunnel inspections are mostly conducted manually, which suffers from low efficiency, poor reliability, and large inspection errors.

[0003] In existing technologies, most methods involve mounting inspection equipment (such as linear array cameras) on a carrier vehicle to move along the length of the tunnel and inspect for surface defects. However, this inspection process has its drawbacks. Firstly, if the tunnel contains soil clods or uneven surfaces, the carrier vehicle is prone to shaking during movement, affecting image acquisition by the linear array camera and leading to missed images or unclear images. Secondly, different types of tunnels have varying dimensions and track distances, requiring different carrier vehicles. Therefore, to address these issues, a detection device is needed that can be matched to tunnels with different track distances, offering strong applicability, reducing shaking during image acquisition, improving detection accuracy, and preventing missed images and unclear images. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a mobile device for tunnel surface inspection equipment, which solves the technical problem in the prior art that the shaking of the carrier vehicle will affect the image acquisition of the linear array acquisition camera, resulting in missed acquisitions and unclear images.

[0005] To achieve the above and other related objectives, this utility model provides a mobile device for a tunnel surface inspection equipment, comprising a base, an adjusting assembly, and a roller mechanism. The adjusting assembly is located on the lower side of the base, and the roller mechanism is located on the adjusting assembly. The adjusting assembly includes an adjusting screw, a first motor, and a synchronous pulley mechanism. The adjusting screws are symmetrically and parallelly installed below the base via mounting blocks. The two adjusting screws are connected by the synchronous pulley mechanism. Both ends of the adjusting screw have threads, and one end of the thread has two segments with opposite rotation directions. The first motor is fixedly installed on the base, and the output end of the first motor drives the adjusting screw to rotate through a gear pair. The roller mechanisms are arranged in pairs, with one roller mechanism on each of the two segments of the thread with opposite rotation directions at one end. When the adjusting screw rotates, the paired roller mechanisms on the same side move closer to or further away from each other.

[0006] In this way, the distance between the roller mechanisms can be adjusted through the distance adjustment mechanism, making the roller mechanisms suitable for tunnels with different track distances. At the same time, the roller mechanisms also have a buffering and shock absorption function, which can reduce the vibration of the equipment during the image acquisition process, making the acquired images clearer and easier to detect.

[0007] Optionally, the roller mechanism includes a movable frame, a shock-absorbing mechanism, and rollers. A limit groove is provided on the lower side of the base, and the upper end of the movable frame is slidably disposed within the limit groove. A nut that cooperates with the adjusting screw is fixedly installed on the movable frame. When the adjusting screw rotates, the nut causes the movable frame to move. Several shock-absorbing mechanisms are arranged linearly in the direction of movement of the base and are vertically fixed below the movable frame. The rollers are rotatably mounted on the shock-absorbing mechanisms. The shock-absorbing mechanism reduces device vibration during image acquisition, resulting in clearer images and facilitating inspection.

[0008] Optionally, the shock absorption mechanism includes a telescopic column, a spring, and a roller bracket. The upper end of the telescopic column is fixedly connected to the lower side of the movable frame, and the lower end is fixedly connected to the roller bracket. The spring is sleeved on the outside of the telescopic column, and its upper and lower ends are respectively pressed against the lower side of the movable frame and the upper side of the roller bracket. A mounting groove is provided on the lower side of the roller bracket away from the telescopic column, and the roller is rotatably mounted in the mounting groove. This reduces device vibration during image acquisition, resulting in clearer images and facilitating inspection.

[0009] Optionally, the lower end of the telescopic column is fixedly installed on one side of the roller bracket, so that the telescopic column and the roller bracket are arranged in an L-shape, and the roller bracket is oriented towards the other roller bracket in a pair. The L-shape arrangement facilitates the rolling of the roller on the track.

[0010] Optionally, a third motor is fixedly installed on the outer side of the mounting slot near the telescopic column. The output end of the third motor is fixedly connected to the rotating shaft of the roller, and the third motor drives the roller to rotate. The independently installed drive wheel facilitates steering and driving, and is better suited for curves.

[0011] Optionally, the installation mechanism includes a mounting frame, a movable frame, a fixed frame, an electric lifting column, and a rotating part. The lower end of the fixed frame is rotatably mounted on the base via the rotating part. The fixed frame has a sliding groove. The lower end of the electric lifting column is fixedly mounted on the bottom of the sliding groove, and the upper end of the electric lifting column is fixedly connected to the movable frame. The movable frame is slidably disposed within the sliding groove via the electric lifting column. The mounting frame is fixedly mounted on the top of the movable frame, and the image acquisition module is mounted on the mounting frame. The electric lifting column enables rapid adjustment of the overall height, allowing the linear camera to adapt to different tunnel clearances and facilitating image acquisition in various tunnels.

[0012] Optionally, the rotating part includes a second motor and a rotating base. The second motor is fixedly mounted on the base, and the rotating base is rotatably mounted on the base via a bracket. The output end of the second motor is fixedly connected to one end of the rotating shaft of the rotating base. Using the rotating part, the arc-shaped mounting plate can be laid flat to a horizontal position, facilitating transportation and maintenance.

[0013] Optionally, the mounting frame has an arc-shaped mounting plate, on which the image acquisition modules are evenly distributed and radially outward. The detection head of the linear camera and the emission head of the light source are also radially outward along the arc-shaped mounting plate. The arc-shaped mounting plate allows the image acquisition modules to achieve full coverage of the tunnel's top and sides.

[0014] Optionally, the base is provided with a plurality of support blocks to support the mounting mechanism after it is rotated to a horizontal position.

[0015] Optionally, the synchronous belt pulley mechanism includes synchronous pulleys and a synchronous belt. The synchronous pulleys are respectively fixedly sleeved on two parallel adjustable lead screws, and the synchronous belt is engaged with the two synchronous pulleys.

[0016] Optionally, an image acquisition module is also included, comprising a linear camera and a light source, which is mounted on the mobile device via a mounting mechanism. Mounting the image acquisition module on the mobile mechanism reduces device vibration during image acquisition, resulting in clearer image acquisition.

[0017] The beneficial effects of this utility model are as follows: when using this utility model, the moving device can reduce the shaking of the equipment during the image acquisition process, making the image acquisition clearer; the adjustable rollers can be used in tunnels with various track spacings; and the horizontally placed mounting frame facilitates transportation and maintenance. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0019] Figure 2 Displayed as Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 3 The diagram shows the overall structure of this utility model from different angles.

[0021] Figure 4 Displayed as Figure 3 Enlarged schematic diagram of the structure at point B.

[0022] Figure 5 The diagram shows the overall structure of this utility model from different angles.

[0023] Figure 6 Displayed as Figure 5 A magnified schematic diagram of the structure at point C.

[0024] Figure 7 Displayed as Figure 5 A magnified schematic diagram of the structure at point D. Figure 8 The diagram shows the installation structure of the electric rising bollard. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0026] Please see Figures 1 to 8It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0027] like Figures 1-8 As shown, a mobile device for tunnel surface inspection equipment includes a base 1. A roller mechanism 3 is installed below the base 1 via an adjusting assembly 2. The adjusting assembly 2 includes an adjusting screw 21, a first motor 22, and a synchronous belt pulley mechanism 23. Several mounting blocks 24 are symmetrically installed below both ends of the base 1. Rolling bearings 25 are installed within each mounting block 24. The adjusting screw 21 is rotatably mounted on the mounting block 24 via the rolling bearings 25. Two adjusting screws 21 are parallel to each other and perpendicular to the direction of movement of the base 1. Both ends of the adjusting screw 21 have threads, and one end of the thread consists of two sections of threads with opposite directions of rotation. Each section of the thread is equipped with... A roller mechanism 3 is provided. A first motor 22 is fixedly installed above one end of a base 1. A clearance groove 12 is provided on the base 1. The clearance groove 12 is located above one of the adjustable lead screws 21. The output end of the first motor 22 has a driving wheel 26. A driven wheel 27 is provided on the adjustable lead screw 21 below the clearance groove 12. The driving wheel 26 and the driven wheel 27 mesh. When the first motor 22 starts, the meshing gear pair can drive the adjustable lead screw 21 to rotate. The two adjustable lead screws 21 rotate synchronously through a synchronous belt pulley mechanism 23. After the adjustable lead screws 21 rotate, the roller mechanisms 3 on the same side with different helical threads can move closer or further away from each other.

[0028] The roller mechanism 3 includes a movable frame 31, a shock-absorbing mechanism 32, and rollers 33. Above the axis of the adjusting screw 21, a limiting groove 13 is formed on the base 1. The upper end of the movable frame 31 can slide within the limiting groove 13 to prevent the movable frame 31 from rotating. The movable frame 31 is fixedly mounted with a nut that is threadedly engaged with the adjusting screw 21. Through the nut, when the adjusting screw 21 rotates, the movable frame 31 moves on the adjusting screw 21, thereby realizing the adjustment of the distance between the movable frames 31 on the same end with different screw directions. The shock-absorbing mechanism 32 is linearly installed below the movable frame 31 in the direction of movement of the base 1. The shock-absorbing mechanism 32 includes a telescopic column 321, a spring 322, and a roller bracket 323. The telescopic column 321 is vertically arranged, and the two... The telescopic column 321 and the roller bracket 323 are respectively fixedly installed below the movable frame 31 and on the roller bracket 323. After installation, the telescopic column 321 and the roller bracket 323 are arranged in an L-shape, and the roller bracket 323 is set towards the other roller bracket 323 in a pair. The spring 322 is sleeved on the outside of the telescopic column 321, and the two ends of the spring 322 are pressed between the movable frame 31 and the roller bracket 323. The roller bracket 323 is provided with a mounting groove 3231 on the side away from the telescopic column 321. The roller 33 is rotatably installed in the mounting groove 3231. A third motor 35 is fixedly installed on the outer side of the mounting groove 3231 near the telescopic column 321. The output end of the third motor 35 is fixedly connected to the rotating shaft of the roller 33, and the roller 33 is driven to rotate by the third motor 35.

[0029] An installation mechanism 4 is rotatably mounted on the base 1. An image acquisition module 6 is mounted on the upper end of the installation mechanism 4 via an adjustment mechanism 5. The installation mechanism 4 includes an arc-shaped installation plate 45, an installation frame 44, a movable frame 42, a fixed frame 41, an electric lifting column 43, and a rotating part 46. The lower end of the fixed frame 41 is rotatably mounted on the base 1 via the rotating part 46. Both the fixed frame 41 and the movable frame 42 are hollow square tubes with a sliding groove 411 in the middle. The top of the movable frame 42 is closed, and the movable frame 42 is slidably mounted in the sliding groove 411 of the fixed frame 41. The bottom of the electric lifting column 43 is fixedly mounted on the bottom of the sliding groove 411, and the top is fixedly mounted on the top of the sliding groove of the movable frame 42. The arc-shaped installation plate 45 is mounted on the top of the movable frame 42 via the installation frame 44. The image acquisition module 6 is mounted on the arc-shaped installation plate 45 via the adjustment mechanism 5.

[0030] Specifically, the rotating part 46 includes a second motor 461 and a rotating seat 462. The second motor 461 is fixedly mounted on the base 1, and the rotating seat 462 is rotatably mounted on the base 1 through a bracket 463. The output end of the second motor 461 is fixedly connected to one end of the rotating shaft of the rotating seat 462, and the bottom of the fixing frame 41 is fixedly mounted on the rotating seat 462.

[0031] The adjustment mechanism 5 is arranged in several groups evenly distributed radially on the arc-shaped mounting plate 45 to acquire images of the entire tunnel surface. The adjustment mechanism 5 includes a mounting platform 51, a support plate 53, a linear slide rail slider module 52, and a drive mechanism 54. There are two mounting platforms 51 arranged radially on the arc-shaped mounting plate 45. The two ends of the linear slide rail slider module 52 are fixedly mounted on the mounting platform 51. The support plate 53 is fixedly mounted on the slider 521 of the linear slide rail slider module 52. The drive mechanism 54 is located on the mounting platform 51. The support plate 53 is connected to the drive mechanism 54. The drive mechanism 54 drives the support plate 53 to move on the linear slide rail slider module 52. The image acquisition module 6 is fixedly mounted on the support plate 53.

[0032] Specifically, the drive mechanism 54 includes a moving block 543, a fourth motor 541, and a ball screw module 542. The fourth motor 541 is fixedly mounted on a mounting platform 51 near the center of the arc-shaped mounting plate 45. The screw 5421 of the ball screw module 542 is rotatably disposed between the mounting platforms 51. The output end of the fourth motor 541 is connected to one end of the screw 5421 of the ball screw module 542. The moving block 543 is fixedly mounted on the lower side of the support plate 53, and the nut of the ball screw module 542 is fixedly mounted inside the moving block 543. When the fourth motor 541 is started, it can drive the moving block 543 and its support plate 53 to move on the linear slide rail slider module 52, thereby adjusting the position of the image acquisition module 6.

[0033] The image acquisition module 6 includes a linear camera 61, a light source 62, and a module protective shell 63. The linear camera 61 and the light source 62 are fixedly installed inside the module protective shell 63, which is fixedly installed on the support plate 53. The detection head of the linear camera 61 and the emitting end of the light source 62 are arranged radially outward along the arc-shaped mounting plate 45. Through the evenly distributed image acquisition module 6, comprehensive acquisition of the top and sides of the tunnel can be performed.

[0034] Specifically, the base 1 is provided with several support blocks 11, which support the fixed frame 41 and the arc-shaped mounting plate 45 after they are rotated to the horizontal position.

[0035] The base is also equipped with an electronic control component 7, which includes a power supply 72, a main unit, and a touch screen 71.

[0036] Working principle:

[0037] In using this invention, the distance between the rollers is first adjusted according to the width of the track in the tunnel to facilitate the rollers' rolling on the track. An independent motor on each roller drives it to roll on the track. A shock-absorbing mechanism on the rollers reduces equipment vibration during movement, resulting in clearer image acquisition. The electric telescopic column and adjustment mechanism facilitate the adjustment of the linear camera's focal length, allowing each set of linear cameras and light sources to move independently radially, enabling real-time matching of resolution and field of view. Placing the mounting frame horizontally facilitates transportation and reduces equipment damage. The above embodiments are merely illustrative of the principles and effects of this invention and are not intended to limit it. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this invention should still be covered by the claims of this invention.

Claims

1. A mobile device for tunnel surface inspection equipment, characterized in that, The device includes a moving unit, which comprises a base, an adjusting assembly, and a roller mechanism. The adjusting assembly is located on the lower side of the base, and the roller mechanism is located on the adjusting assembly. The adjusting assembly includes an adjusting screw, a first motor, and a synchronous pulley mechanism. The adjusting screws are symmetrically and parallelly mounted below the base via mounting blocks. The two adjusting screws are connected by the synchronous pulley mechanism. Each end of the adjusting screw has a thread, and one end of the thread has two segments with opposite directions of rotation. The first motor is fixedly mounted on the base, and the output end of the first motor drives the adjusting screw to rotate via a gear pair. The roller mechanisms are arranged in pairs, with one roller mechanism on each of the two segments of the thread with opposite directions of rotation. When the adjusting screw rotates, the paired roller mechanisms on the same side move closer to or further away from each other.

2. The mobile device for tunnel surface inspection equipment according to claim 1, characterized in that: The roller mechanism includes a movable frame, a shock-absorbing mechanism, and rollers. A limit groove is provided on the lower side of the base. The upper end of the movable frame is slidably disposed within the limit groove. A nut that cooperates with the adjusting screw is fixedly installed on the movable frame. When the adjusting screw rotates, the movable frame moves through the nut. Several shock-absorbing mechanisms are arranged linearly in the direction of movement of the base and are vertically fixedly installed below the movable frame. The rollers are rotatably mounted on the shock-absorbing mechanisms.

3. A mobile device for tunnel surface inspection equipment according to claim 2, characterized in that: The shock absorption mechanism includes a telescopic column, a spring, and a roller bracket. The upper end of the telescopic column is fixedly connected to the lower side of the movable frame, and the lower end is fixedly connected to the roller bracket. The spring is sleeved on the outside of the telescopic column, and its upper and lower ends are respectively pressed against the lower side of the movable frame and the upper side of the roller bracket. The roller bracket has an installation groove on the side away from the telescopic column, and the roller is rotatably installed in the installation groove.

4. A mobile device for tunnel surface inspection equipment according to claim 3, characterized in that: The lower end of the telescopic column is fixedly installed on one side of the roller bracket, so that the telescopic column and the roller bracket are arranged in an L-shape, and the roller bracket is oriented towards the other roller bracket in a pair.

5. A mobile device for a tunnel surface inspection equipment according to claim 3, characterized in that: A third motor is fixedly installed on the outer side of the mounting slot near the telescopic column. The output end of the third motor is fixedly connected to the rotating shaft of the roller, and the third motor drives the roller to rotate.

6. A mobile device for a tunnel surface inspection equipment according to claim 1, characterized in that: An installation mechanism is rotatably mounted on the base. The installation mechanism includes a mounting frame, a movable frame, a fixed frame, an electric lifting column, and a rotating part. The lower end of the fixed frame is rotatably mounted on the base via the rotating part. The fixed frame has a sliding groove. The lower end of the electric lifting column is fixedly mounted on the bottom of the sliding groove. The upper end of the electric lifting column is fixedly connected to the movable frame. The movable frame is slidably disposed in the sliding groove via the electric lifting column. The mounting frame is fixedly mounted on the top of the movable frame. An image acquisition module is mounted on the mobile device via the installation mechanism. The image acquisition module includes a linear camera and a light source.

7. A mobile device for a tunnel surface inspection equipment according to claim 6, characterized in that: The rotating part includes a second motor and a rotating base. The second motor is fixedly mounted on the base, and the rotating base is rotatably mounted on the base via a bracket. The output end of the second motor is fixedly connected to one end of the rotating shaft of the rotating base.

8. A mobile device for a tunnel surface inspection equipment according to claim 6, characterized in that: The mounting bracket has an arc-shaped mounting plate, the image acquisition module is evenly distributed on the arc-shaped mounting plate and faces outward radially along the arc-shaped mounting plate, and the detection head of the linear camera and the emission head of the light source are arranged outward radially along the arc-shaped mounting plate.

9. A mobile device for a tunnel surface inspection equipment according to claim 6, characterized in that: The base is provided with several support blocks, which support the installation mechanism after it is rotated to a horizontal position.

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