A column surface defect detection device

Abstract

The utility model belongs to visual inspection technical field, concretely relates to a kind of column surface defect detection device, to solve the problem that due to manual visual inspection is susceptible to the experience and fatigue degree of detection personnel, and part of subtle crack and erosion need close observation can be identified, lead to prone to miss or misjudgment situation problem.The utility model includes drive mechanism, multiple detection camera and multiple lifting mechanism;Drive mechanism is used to move along the length direction of column, and can dynamically adapt the change of column outer diameter in its moving process.The column surface defect detection device provided by the utility model when using, through multiple detection camera around column axis circumferential array distribution, to collect annular graph around column periphery, then drive mechanism drives multiple detection camera to move along the length direction of column, to gradually collect image along the length direction of column, and then detect column according to the image of detection camera detection.

Description

Technical Field

[0001] This utility model belongs to the field of visual inspection technology, and specifically relates to a device for detecting defects on the surface of a column. Background Technology

[0002] A column is a vertical or near-vertical supporting component, mainly used to bear axial pressure in order to support the load of the superstructure and maintain the stability of the overall structure. Columns are widely used in construction, bridges, power facilities, rail transit and industrial equipment, and are usually made of metal or concrete.

[0003] During long-term use, columns may be affected by environmental corrosion, alternating mechanical stress, fatigue loads or material aging, leading to structural defects such as cracks, pitting, peeling, and cross-sectional thinning on their surface or inside, thereby reducing the load-bearing capacity and structural safety of the columns. Therefore, it is necessary to conduct structural health status tests on them regularly.

[0004] In the existing technology, the inspection of columns mainly adopts the manual pole climbing inspection method. The inspectors need to climb to different heights of the column and inspect the surface of the column by visual inspection or simple tools. However, manual visual inspection is easily affected by the inspector's experience and fatigue level, and some fine cracks and corrosion can only be identified by close observation, which can easily lead to missed inspections or misjudgments, thus affecting the accuracy and reliability of the column inspection results. Utility Model Content

[0005] To address the aforementioned problems in existing technologies—namely, the ease with which manual visual inspection can be affected by the experience and fatigue of the inspectors, and the fact that some minute cracks and corrosion require close observation to be identified, leading to missed detections or misjudgments—this invention provides a column surface defect detection device.

[0006] The device includes a drive mechanism, multiple detection cameras, and multiple lifting mechanisms. The drive mechanism is used to move along the length of the column and can dynamically adapt to changes in the outer diameter of the column during its movement. The multiple detection cameras are arranged in a circumferential array around the axis of the column, and their detection ends all face the surface of the column to collect images of the column surface. The fixed ends of the multiple lifting mechanisms are connected to the drive mechanism, and their telescopic ends are respectively connected to the multiple detection cameras to drive the detection cameras to extend or retract relative to the drive mechanism along the length of the column.

[0007] Furthermore, the drive mechanism has an intermittent detection mode and a continuous detection mode; in the intermittent detection mode, the drive mechanism moves intermittently in segments along the length of the column, and the moving distance is less than the axial detection range of the detection camera, so that the detection camera can capture images of the column surface during the pause; in the continuous detection mode, the drive mechanism moves at a constant speed along the length of the column, and the detection camera synchronously and continuously captures images of the column surface.

[0008] Furthermore, the driving mechanism includes a clamping structure and two traveling structures; the clamping structure includes two detachably connected clamping arc plates for surrounding and adapting to the outer periphery of the column; the traveling structure includes a deflecting arm, a follower shaft, a traveling roller, and a pressure spring plate; the deflecting arm is rotatably mounted on the clamping arc plate; the follower shaft is rotatably mounted on the end of the deflecting arm away from the clamping arc plate and is capable of rotating about its own axis; the traveling roller is fitted onto the follower shaft; one end of the pressure spring plate is connected to the clamping arc plate, and the other end is connected to the deflecting arm, for applying a preload towards the column to the traveling roller, causing it to roll and adhere to the surface of the column; the two traveling structures are respectively mounted on the two clamping arc plates and are symmetrically arranged with the column as the center.

[0009] Furthermore, the clamping structure also includes a locking screw, two locking nuts, and two preload springs; both clamping arc plates are slidably fitted onto the locking screw; the two locking nuts are threaded to both ends of the locking screw; one end of each of the two preload springs abuts against the two locking nuts, and the other end abuts against the two clamping arc plates.

[0010] Furthermore, the clamping structure also includes two adapter supports; both adapter supports are slidably fitted onto the locking screw; one end of each adapter support is inserted into the preload spring, and the other end abuts against the locking nut.

[0011] Furthermore, the traveling structure also includes a drive motor and a transmission component; the drive motor is mounted on the deflection arm, and its rotation shaft is connected to the follower shaft via the transmission component, for driving the follower shaft to rotate around its own axis.

[0012] Furthermore, the lifting mechanism includes an electric push rod; the electric push rod is mounted on the clamping arc plate, and its telescopic end is connected to the detection camera, used to drive the detection camera to move along the length direction of the column.

[0013] Furthermore, the lifting mechanism also includes an extension rod; one end of the extension rod is connected to the telescopic end of the electric push rod, and the other end is connected to the detection camera, for extending the extension distance of the detection camera relative to the drive mechanism.

[0014] Furthermore, the traveling structure includes two traveling rollers; both traveling rollers are mounted on the follower shaft and are symmetrically arranged with respect to the transmission component.

[0015] Furthermore, the driving mechanism includes four traveling structures, which are divided into two groups; each group of two traveling structures is mounted on the clamping arc plate and arranged symmetrically with the clamping arc plate as the center.

[0016] The beneficial effects of this utility model are:

[0017] The device includes a drive mechanism, multiple detection cameras, and multiple lifting mechanisms. The drive mechanism is used to move along the length of the column and can dynamically adapt to changes in the outer diameter of the column during its movement. The multiple detection cameras are arranged in a circumferential array around the axis of the column, and their detection ends are all facing the surface of the column to collect images of the column surface. The fixed ends of the multiple lifting mechanisms are all connected to the drive mechanism, and their telescopic ends are respectively connected to the multiple detection cameras to drive the detection cameras to extend or retract relative to the drive mechanism along the length of the column.

[0018] The column surface defect detection device provided by this utility model uses multiple detection cameras arranged in a circular array around the column axis to collect annular patterns around the outer circumference of the column. Then, a drive mechanism moves the multiple detection cameras along the length of the column to gradually collect images along the length of the column. The column is then inspected based on the images detected by the detection cameras. This solves the problem that manual visual inspection is easily affected by the experience and fatigue of the inspectors, and some fine cracks and corrosion can only be identified by close observation, which can easily lead to missed detections or misjudgments.

[0019] In addition, by setting the drive mechanism to dynamically adapt to changes in the outer diameter of the column during its movement, so as to adapt to the column whose outer diameter changes along the length direction, the drive mechanism can be ensured to move smoothly along the length direction of the column, thereby expanding the applicability of the device.

[0020] In addition, when there are obstacles in the movement path of the drive mechanism, multiple detection cameras are arranged in a circular array around the axis of the column so that the obstacles are between adjacent detection cameras. After the drive mechanism comes into contact with the obstacle, the lifting mechanism drives the detection cameras to extend relative to the drive mechanism along the length of the column so as to collect images of the column area above the obstacle. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the column surface defect detection device provided in this embodiment of the utility model;

[0023] Figure 2 This is a front view of the column surface defect detection device provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the drive mechanism provided in an embodiment of the present invention;

[0025] Figure 4 This is a front view of the drive mechanism provided in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the clamping structure provided in the embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the traveling structure provided in this embodiment of the utility model;

[0028] Figure 7 This is a schematic diagram of the assembly structure of the detection camera and lifting mechanism provided in this embodiment of the utility model. Detailed Implementation

[0029] The present application 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 for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] This utility model provides a device for detecting defects on the surface of a column.

[0032] It includes a drive mechanism 100, multiple detection cameras 200, and multiple lifting mechanisms 300. The drive mechanism 100 is used to move along the length of the column and can dynamically adapt to changes in the outer diameter of the column during its movement. The multiple detection cameras 200 are arranged in a circumferential array around the axis of the column, and their detection ends are all facing the surface of the column, for collecting images of the column surface. The fixed ends of the multiple lifting mechanisms 300 are all connected to the drive mechanism 100, and their telescopic ends are respectively connected to the multiple detection cameras 200, for driving the detection cameras 200 to extend or retract relative to the drive mechanism 100 along the length of the column.

[0033] In this embodiment, multiple detection cameras 200 are arranged in a circular array around the axis of the column to collect a ring-shaped pattern around the outer perimeter of the column. Then, the driving mechanism 100 drives the multiple detection cameras 200 to move along the length of the column to gradually collect images along the length of the column. The column is then detected based on the images detected by the detection cameras 200.

[0034] In addition, by setting the drive mechanism 100 to dynamically adapt to the change in the outer diameter of the column during its movement, so as to adapt to the column whose outer diameter changes along the length direction, the drive mechanism 100 can be ensured to move smoothly along the length direction of the column, thereby expanding the applicability of the device.

[0035] In addition, when there is an obstacle in the movement path of the drive mechanism 100, multiple detection cameras 200 are arranged in a circular array around the axis of the column so that the obstacle is between adjacent detection cameras 200. After the drive mechanism 100 comes into contact with the obstacle, the lifting mechanism 300 drives the detection cameras 200 to extend relative to the drive mechanism 100 along the length of the column so as to collect images of the column area above the obstacle.

[0036] The method for detecting images of the column surface captured by camera 200 is as follows:

[0037] like Figures 1-2 As shown, the drive mechanism 100 has an intermittent detection mode and a continuous detection mode. In the intermittent detection mode, the drive mechanism 100 moves intermittently in segments along the length of the column, and the moving distance is less than the axial detection range of the detection camera 200, so that the detection camera 200 can collect images of the column surface during the pause. In the continuous detection mode, the drive mechanism 100 moves at a constant speed along the length of the column, and the detection camera 200 synchronously and continuously collects images of the column surface.

[0038] In this embodiment, when the drive mechanism 100 is in intermittent detection mode, the drive mechanism 100 moves intermittently in segments along the length of the column, and the detection camera 200 collects images of the column surface during the pause of the drive mechanism 100; at the same time, the moving distance of the drive mechanism 100 is set to be less than the axial detection range of the detection camera 200 so that the images collected by the detection camera 200 partially overlap, thereby avoiding the phenomenon of missing images.

[0039] When the drive mechanism 100 is in continuous detection mode, the drive mechanism 100 moves at a constant speed along the length of the column. The drive mechanism 100 drives the detection camera 200 to move through the lifting mechanism 300, so that the detection camera 200 can synchronously and continuously acquire images of the column surface as the drive mechanism 100 moves.

[0040] In order for the drive mechanism 100 to move along the length of the column and to dynamically adapt to changes in the outer diameter of the column during its movement:

[0041] like Figures 3-6 As shown, the drive mechanism 100 includes a clamping structure 110 and two traveling structures 120. The clamping structure 110 includes two detachably connected clamping arc plates 111 for surrounding and adapting to the outer periphery of the column. The traveling structure 120 includes a deflecting arm 121, a follower shaft 122, a traveling roller 123, and a pressure spring plate 124. The deflecting arm 121 is rotatably mounted on the clamping arc plate 111. The follower shaft 122 is rotatably mounted on the end of the deflecting arm 121 away from the clamping arc plate 111 and can rotate around its own axis. The traveling roller 123 is fitted onto the follower shaft 122. One end of the pressure spring plate 124 is connected to the clamping arc plate 111, and the other end is connected to the deflecting arm 121 for applying a preload toward the column to the traveling roller 123, so that it rolls and adheres to the surface of the column. The two traveling structures 120 are respectively mounted on the two clamping arc plates 111 and are symmetrically arranged with the column as the center.

[0042] To allow for the detachable connection of the two clamping arc plates 111 and to further increase the upper limit of dynamically adapting to changes in the outer diameter of the column:

[0043] The clamping structure 110 also includes a locking screw 112, two locking nuts 113 and two preload springs 114; both clamping arc plates 111 are slidably fitted onto the locking screw 112; the two locking nuts 113 are threaded to both ends of the locking screw 112; one end of each of the two preload springs 114 abuts against the two locking nuts 113, and the other end abuts against the two clamping arc plates 111.

[0044] In this embodiment, the column is first placed between two clamping arc plates 111. Then, the two locking nuts 113 are rotated around the axis of the locking screw 112. The locking nuts 113 move along the locking screw 112 under the engagement of the threads. The moving locking nuts 113 drive the preload spring 114 to compress under the engagement of the clamping arc plates 111. The compressed preload spring 114 drives the two clamping arc plates 111 to move towards each other. During this process, the two clamping arc plates 111 drive the two traveling structures 120 to move towards the column. After the traveling roller 123 in the traveling structure 120 is in contact with the column, the traveling roller 123 drives the deflection arm 121 to rotate. The rotating deflection arm 121 drives the pressure spring plate 124 to elastically deform under the engagement of the clamping arc plates 111. The preload spring 114 and the pressure spring plate 124 abut the traveling roller 123 against the column, thereby causing the drive mechanism 100 to move along the length of the column.

[0045] When the outer diameter of the column decreases, the preload spring 114 and the compression spring plate 124 restore their deformation to drive the traveling roller 123 to abut against the column, thus adapting to the scenario of the column outer diameter decreasing; when the outer diameter of the column increases, the preload spring 114 and the compression spring plate 124 continue to compress, thus adapting to the scenario of the column outer diameter increasing, thereby enabling the drive mechanism 100 to dynamically adapt to the change in the outer diameter of the column during movement.

[0046] To avoid damage to the preload spring 114 during the rotation of the locking nut 113:

[0047] like Figure 5 As shown, the clamping structure 110 also includes two adapter supports 115; both adapter supports 115 are slidably fitted onto the locking screw 112; one end of the adapter support 115 is inserted into the preload spring 114, and the other end abuts against the locking nut 113.

[0048] In this embodiment, by inserting one end of the adapter support 115 into the preload spring 114 and the other end abutting against the locking nut 113, the rotating locking nut 113 slides relative to the adapter support 115, thereby reducing the torsional stress of the locking nut 113 on the preload spring 114, thus avoiding the torsion of the preload spring 114 caused by the rotation of the locking nut 113.

[0049] To drive the travel roller 123 to roll along the column surface:

[0050] like Figure 6 As shown, the traveling structure 120 also includes a drive motor 125 and a transmission component 126; the drive motor 125 is mounted on the deflection arm 121, and its rotation shaft is connected to the follower shaft 122 through the transmission component 126, for driving the follower shaft 122 to rotate around its own axis.

[0051] In this embodiment, the drive motor 125 drives the follower shaft 122 to rotate around its own axis through the transmission component 126. The follower shaft 122 drives the traveling roller 123 to rotate around its own axis. The rotating traveling roller 123 rolls along the surface of the column. The type of the transmission component 126 includes, but is not limited to, a combination of synchronous pulley and synchronous belt.

[0052] To enable the lifting mechanism 300 to extend or retract the detection camera 200 relative to the drive mechanism 100 along the length of the column:

[0053] like Figure 7 As shown, the lifting mechanism 300 includes an electric push rod 310; the electric push rod 310 is installed on the clamping arc plate 111, and its telescopic end is connected to the detection camera 200, which is used to drive the detection camera 200 to move along the length direction of the column.

[0054] In this embodiment, after the drive mechanism 100 contacts the obstacle, the electric push rod 310 extends to drive the detection camera 200 to move along the length of the column, thereby causing the detection camera 200 to extend relative to the drive mechanism 100; after the detection camera 200 completes image acquisition, the electric push rod 310 retracts to drive the detection camera 200 to move along the length of the column, thereby causing the detection camera 200 to retract relative to the drive mechanism 100.

[0055] In order to extend the distance of the detection camera 200 relative to the drive mechanism 100:

[0056] like Figure 7 As shown, the lifting mechanism 300 also includes an extension rod 320; one end of the extension rod 320 is connected to the telescopic end of the electric push rod 310, and the other end is connected to the detection camera 200, for extending the extension distance of the detection camera 200 relative to the drive mechanism 100.

[0057] In this embodiment, by setting an extension rod 320 between the detection camera 200 and the electric push rod 310, the detection camera 200 partially extends out of the drive mechanism 100 when the electric push rod 310 is in the retracted state, thereby extending the extension distance of the detection camera 200 relative to the drive mechanism 100; for the lower part of the column that the detection camera 200 fails to detect, it can be detected by visual inspection.

[0058] To increase the contact area between the drive mechanism 100 and the column:

[0059] like Figure 6 As shown, the traveling structure 120 includes two traveling rollers 123; both traveling rollers 123 are mounted on the follower shaft 122 and are symmetrically arranged with the transmission component 126 as the center.

[0060] In this embodiment, by mounting both traveling rollers 123 on the follower shaft 122 and symmetrically arranging them with the transmission component 126 as the center, the highest point of the column is avoided, thereby enabling both traveling rollers 123 to abut against the surface of the column, thus increasing the contact area between the drive mechanism 100 and the column.

[0061] To improve the stability of the drive mechanism 100 during its movement:

[0062] like Figures 3-4 As shown, the drive mechanism 100 includes four traveling structures 120, which are divided into two groups; each group of two traveling structures 120 is mounted on the clamping arc plate 111 and arranged symmetrically with the clamping arc plate 111 as the center.

[0063] In this embodiment, by installing each set of two traveling structures 120 on the clamping arc plate 111 and symmetrically arranging them with the clamping arc plate 111 as the center, the clamping arc plate 111 is supported on both sides along the column direction, thereby improving the stability of the drive mechanism 100 during movement.

[0064] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0065] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A device for detecting defects on the surface of a column, characterized in that: It includes a drive mechanism (100), multiple detection cameras (200) and multiple lifting mechanisms (300). The drive mechanism (100) is used to move along the length of the column and can dynamically adapt to changes in the outer diameter of the column during its movement; Multiple detection cameras (200) are arranged in a circular array around the axis of the column, and their detection ends are all facing the surface of the column, for acquiring images of the column surface; The fixed ends of the multiple lifting mechanisms (300) are all connected to the driving mechanism (100), and their telescopic ends are respectively connected to the multiple detection cameras (200) to drive the detection cameras (200) to extend or retract relative to the driving mechanism (100) along the length direction of the column.

2. The column surface defect detection device according to claim 1, characterized in that: The drive mechanism (100) has an intermittent detection mode and a continuous detection mode; In the intermittent detection mode, the drive mechanism (100) moves intermittently in segments along the length of the column, and the moving distance is less than the axial detection range of the detection camera (200), so that the detection camera (200) can capture images of the column surface during the pause. In the continuous detection mode, the drive mechanism (100) moves at a constant speed along the length of the column, and the detection camera (200) synchronously and continuously acquires images of the column surface.

3. The column surface defect detection device according to claim 2, characterized in that: The drive mechanism (100) includes a clamping structure (110) and two traveling structures (120). The clamping structure (110) includes two detachably connected clamping arc plates (111) for surrounding and fitting the outer periphery of the column; The traveling structure (120) includes a deflection arm (121), a follower shaft (122), a traveling roller (123), and a pressure spring plate (124). The deflection arm (121) is rotatably mounted on the clamping arc plate (111). The follower shaft (122) is rotatably mounted on the end of the deflection arm (121) away from the clamping arc plate (111), and can rotate around its own axis; The traveling roller (123) is fitted onto the follower shaft (122). One end of the compression spring plate (124) is connected to the clamping arc plate (111), and the other end is connected to the deflection arm (121), which is used to apply a pre-pressure toward the column to the traveling roller (123) so that it rolls and fits against the surface of the column; The two traveling structures (120) are respectively installed on the two clamping arc plates (111) and are arranged symmetrically with the column as the center.

4. The column surface defect detection device according to claim 3, characterized in that: The clamping structure (110) also includes a locking screw (112), two locking nuts (113) and two preload springs (114). Both clamping arc plates (111) are slidably fitted onto the locking screw (112). The two locking nuts (113) are respectively threaded to both ends of the locking screw (112); One end of each of the two preloaded springs (114) abuts against the two locking nuts (113), and the other end abuts against the two clamping arc plates (111).

5. The column surface defect detection device according to claim 4, characterized in that: The clamping structure (110) also includes two adapter supports (115). Both of the adapter supports (115) are slidably fitted onto the locking screw (112); one end of the adapter support (115) is inserted into the preload spring (114), and the other end abuts against the locking nut (113).

6. The column surface defect detection device according to claim 5, characterized in that: The traveling structure (120) also includes a drive motor (125) and a transmission component (126). The drive motor (125) is mounted on the deflection arm (121), and its rotation shaft is connected to the follower shaft (122) through the transmission component (126) to drive the follower shaft (122) to rotate around its own axis.

7. The column surface defect detection device according to claim 6, characterized in that: The lifting mechanism (300) includes an electric push rod (310); The electric push rod (310) is installed on the clamping arc plate (111), and its telescopic end is connected to the detection camera (200) to drive the detection camera (200) to move along the length of the column.

8. The column surface defect detection device according to claim 7, characterized in that: The lifting mechanism (300) also includes an extension rod (320); One end of the extension rod (320) is connected to the telescopic end of the electric push rod (310), and the other end is connected to the detection camera (200), for extending the extension distance of the detection camera (200) relative to the drive mechanism (100).

9. The column surface defect detection device according to claim 8, characterized in that: The traveling structure (120) includes two traveling rollers (123). Both of the traveling rollers (123) are mounted on the follower shaft (122) and are arranged symmetrically with respect to the transmission component (126).

10. The column surface defect detection device according to claim 9, characterized in that: The drive mechanism (100) includes four of the traveling structures (120), each divided into two groups; Each pair of the two traveling structures (120) are mounted on the clamping arc plate (111) and arranged symmetrically with the clamping arc plate (111) as the center.

Images