A large-angle vision module for borehole defect detection

Abstract

The application relates to the technical field of industrial detection equipment, and discloses a wide-angle visual module for hole defect detection, which comprises a detection cylinder shell, an annular mounting seat is installed on the detection cylinder shell, an annular adjusting seat is rotatably installed on the annular mounting seat, a fisheye camera is arranged on the detection cylinder shell, adjusting grooves are arranged on the annular adjusting seat, LED lamp beads are arranged on the annular mounting seat, connecting balls are nested on the LED lamp beads, the connecting balls are matched with the adjusting grooves, the annular mounting seat and the adjusting grooves are arranged, the connecting balls on the LDE lamp beads are matched, the irradiation direction of the LDE lamp beads can be adjusted by rotating the annular mounting seat, when hole defect detection is carried out, the irradiation direction of the LED lamp beads can be adjusted by rotating the rotating shaft on the outside, when the fisheye camera reflects light during shooting, the fisheye camera can be corrected in time, and the accuracy of hole defect detection is ensured.

Description

Technical Field

[0001] This invention relates to the field of industrial inspection equipment technology, specifically to a wide-angle vision module for detecting defects inside holes. Background Technology

[0002] In industrial production, in order to ensure that the holes in the equipment or the inner holes in the pipes are in a qualified state, it is necessary to inspect the inner wall of the hole. Among the existing inspection methods, there is visual inspection, which involves inserting a camera into the hole to take pictures of the inner wall of the hole and uploading the video and pictures to the inspection system. The system or a person then judges whether there are any defects in the hole. After the camera enters the hole, since the environment inside the hole is dark, it is necessary to use a lighting module for illumination.

[0003] In the prior art, there is a wide-angle vision module for detecting defects inside holes (publication number: CN118533866A). It improves brightness by using a ring light source with LED beads arranged outwards. It also improves the shooting effect by using a fisheye lens to achieve wide-angle shooting, thus solving the problems of low resolution and unclear images in the detection of defects in the inner wall of cylinder bores of existing automotive parts.

[0004] However, in actual use of the device, the LED beads used in the ring light source illuminate the inner wall of the hole. Due to the different internal conditions of different holes, reflections may occur on the inner wall of the hole when the LED beads are used for illumination, which will affect the shooting of the fisheye lens and affect the detection of defects inside the hole. Summary of the Invention

[0005] The purpose of this invention is to provide a wide-angle vision module for detecting defects inside holes, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a wide-angle vision module for detecting defects inside holes, comprising a detection cylindrical shell, an annular mounting base mounted on the detection cylindrical shell, an annular adjustment base rotatably mounted on the annular mounting base, a fisheye camera disposed on the detection cylindrical shell, an adjustment groove formed on the annular adjustment base, an LED bead disposed on the annular mounting base, a connecting ball nested on the LED bead, the connecting ball being adapted to the adjustment groove; a rotating shaft rotatably mounted on the detection cylindrical shell, and a transmission assembly disposed on the detection cylindrical shell, the transmission assembly causing the rotating shaft to drive the annular adjustment base to rotate.

[0008] Furthermore, a fixed frame is installed on the outer shell of the detection cylinder, one end of the rotating shaft is rotatably connected to the fixed frame, a transmission rod is rotatably installed on the fixed frame, the transmission rod is connected to the rotating shaft through a gear set, an adjusting gear is sleeved on the transmission rod, and an arc-shaped rack is installed on the annular adjusting seat, the arc-shaped rack meshing with the adjusting gear.

[0009] Furthermore, an arc-shaped limiting rod is installed on the annular mounting base, and a sliding block is installed on the arc-shaped rack. The arc-shaped limiting rod passes through the sliding block, and two return springs are sleeved on the arc-shaped limiting rod. The two return springs are symmetrically arranged on both sides of the sliding block to reset the tilted sliding block, thereby indirectly achieving the correction of the annular adjusting base.

[0010] Furthermore, a movable frame is slidably mounted on the outer shell of the detection cylinder. The movable frame is connected to the fisheye camera. An adjusting screw is rotatably mounted on the fixed frame. The adjusting screw passes through the movable frame and is threadedly connected to the movable frame. The adjusting screw is connected to the rotating shaft through a gear set two. By rotating the rotating shaft, the adjusting screw is driven to rotate, which in turn drives the fisheye camera to move, making it easy to adjust the position of the fisheye camera.

[0011] Furthermore, the annular mounting base has an opening for the fisheye camera to capture images. A baffle is slidably mounted on the annular mounting base to block the opening. A roller frame is mounted on the outer shell of the detection cylinder, and a connecting steel wire is mounted on the movable frame. The connecting steel wire is connected to the baffle after passing through the roller frame, and the position of the baffle is adjusted by moving the movable frame.

[0012] Furthermore, an adjusting air cylinder is installed on the outer shell of the detection cylinder, and a piston is slidably installed inside the adjusting air cylinder. A connecting rod is installed on the fisheye camera, which passes through the adjusting air cylinder and is connected to the piston. An air guide pipe is installed on the adjusting air cylinder, a nozzle is installed on the air guide pipe, an air supply branch pipe is installed on the air guide pipe, and an air inlet pipe is installed on the adjusting air cylinder. Both the air inlet pipe and the air guide pipe are equipped with one-way valves.

[0013] Furthermore, the adjusting groove is inclined, and when the annular adjusting seat rotates, it will adjust the height of the connecting ball, which in turn drives the LED beads to rotate and adjust the illumination angle of the LED beads.

[0014] Furthermore, the gear set two consists of a circular gear one, a circular gear two, and a circular gear three. The circular gear one is mounted on the rotating shaft, the circular gear two is rotatably mounted on the fixed frame, and the circular gear three is mounted on the adjusting screw. The circular gear two is located between the circular gear one and the circular gear three and meshes with the circular gear one and the circular gear three. The circular gear one is provided with a notch. When the adjusting gear and the arc rack are in the meshing state, the notch on the circular gear one faces the circular gear two.

[0015] Furthermore, a hand-held tube is installed on the outer shell of the detection cylinder. The hand-held tube is sleeved on the rotating shaft and rotatably connected to the rotating shaft. A rotating wheel is sleeved on one end of the rotating shaft.

[0016] The present invention has the following beneficial effects:

[0017] (1) The present invention sets up an annular mounting base and opens an adjustment groove thereon. With the cooperation of the connecting ball on the LDE lamp bead, the illumination direction of the LDE lamp bead can be adjusted by rotating the annular mounting base. Thus, when performing hole defect detection, the illumination direction of the LED lamp bead can be adjusted by rotating the rotating shaft on the outside. This allows the fisheye camera to correct the reflection in time during the shooting process, ensuring the accuracy of hole defect detection.

[0018] (2) By setting up a gear set two and an adjusting screw, the position of the fisheye camera is adjusted when the fisheye camera is used to detect defects inside the hole. In this process, the position of the baffle is adjusted by setting up a connecting steel wire. The baffle can block the opening on the ring mounting base, thereby avoiding damage to the fisheye camera by external objects, improving the protection of the fisheye camera, and thus ensuring the service life of the vision module.

[0019] (3) By setting up an adjusting air cylinder and a piston, the fisheye camera can push the piston to move inside the adjusting air cylinder during the movement process, so that the gas in the adjusting air cylinder is delivered through the air guide pipe, and then acts on the fisheye camera and LED beads through the nozzle and air supply branch pipe respectively, to clean the dust and impurities on the surface of the two. In this process, the lighting effect of the LED beads can be guaranteed, and the shooting effect of the fisheye camera can also be guaranteed, thereby ensuring the accurate detection effect of defects inside the hole.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial structural schematic diagram of the present invention;

[0024] Figure 3This is a cross-sectional structural diagram of the present invention;

[0025] Figure 4 for Figure 3 The diagram shows the structure of part A.

[0026] Figure 5 This is a schematic diagram of the structure of gear set one and gear set two in this invention;

[0027] Figure 6 This is a cross-sectional view of the annular mounting base in this invention.

[0028] Figure 7 This is a schematic diagram of the adjusting gear and the arc-shaped rack in this invention;

[0029] Figure 8 This is a schematic diagram of the structure of the regulating air cylinder, air guide tube, and piston in this invention;

[0030] Figure 9 This is a schematic diagram of the structure of the annular adjusting seat in this invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] In the diagram: 1. Detector cylinder shell; 2. Annular mounting base; 3. LED bead; 4. Annular adjusting base; 5. Connecting ball; 6. Fisheye camera; 7. Handheld cylinder; 8. Rotating shaft; 9. Fixing frame; 10. Gear set one; 11. Transmission rod; 12. Adjusting gear; 13. Gear set two; 14. Adjusting screw; 15. Moving frame; 16. Baffle plate; 17. Roller frame; 18. Connecting steel wire; 19. Adjusting air cylinder; 20. Air guide pipe; 21. Air supply branch pipe; 22. Piston. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1-9As shown, this invention is a wide-angle vision module for detecting defects inside holes, including a detection cylindrical shell 1, an annular mounting base 2 mounted on the detection cylindrical shell 1, an annular adjusting base 4 rotatably mounted on the annular mounting base 2, a fisheye camera 6 disposed on the detection cylindrical shell 1, the fisheye camera 6 being constructed using existing technology, an adjusting groove formed on the annular adjusting base 4, LED beads 3 disposed on the annular mounting base 2, a spherical through groove formed on the annular mounting base 2, the LED beads 3 fitting into the inner wall of the spherical through groove, an arc-shaped groove formed within the spherical through groove, and an LED bead 3 mounted on the LED beads 3. An arc-shaped block is slidably connected to an arc-shaped groove. Adjusting springs are installed on both sides of the arc-shaped block, and the other end of the adjusting spring is connected to the inner wall of the arc-shaped groove. A connecting ball 5 is nested on the LED bead 3. The connecting ball 5 is adapted to the adjusting groove. The adjusting groove is inclined. When the annular adjusting seat 4 rotates, it will adjust the height of the connecting ball 5, thereby driving the LED bead 3 to rotate and adjusting the illumination angle of the LED bead 3. A rotating shaft 8 is rotatably installed on the detection cylindrical shell 1. A transmission component is provided on the detection cylindrical shell 1. The rotating shaft 8 drives the annular adjusting seat 4 to rotate through the transmission component.

[0035] A fixed frame 9 is installed on the outer shell 1 of the testing cylinder. One end of the rotating shaft 8 is rotatably connected to the fixed frame 9. A transmission rod 11 is rotatably installed on the fixed frame 9. The transmission rod 11 is connected to the rotating shaft 8 through a gear set 10. The gear set 10 consists of a circular gear four and a circular gear five. The circular gear four is sleeved on the rotating shaft 8, and the circular gear five is sleeved on the transmission rod 11. The circular gear four and the circular gear five are meshed together. An adjusting gear 12 is sleeved on the transmission rod 11. An arc-shaped rack is installed on the annular adjusting seat 4. The arc-shaped rack is meshed with the adjusting gear 12. An arc-shaped limiting rod is installed on the annular mounting seat 2. A sliding block is installed on the arc-shaped rack, and an arc-shaped limiting rod passes through the sliding block. Two return springs are sleeved on the arc-shaped limiting rod. The two return springs are symmetrically arranged on both sides of the sliding block to reset the tilted sliding block, thereby indirectly achieving the correction of the annular adjusting seat 4. When the adjusting gear 12 rotates with the transmission rod 11, the arc-shaped rack will disengage from the adjusting gear 12 as the adjusting gear 12 rotates. In this state, the rotation of the adjusting gear 12 no longer drives the arc-shaped rack to rotate, and under the action of the return spring, when the adjusting gear 12 rotates in the opposite direction, the adjusting gear 12 and the arc-shaped rack re-mesh and connect.

[0036] A movable frame 15 is slidably mounted on the outer shell 1 of the detection cylinder. The movable frame 15 is connected to the fisheye camera 6. An adjusting screw 14 is rotatably mounted on the fixed frame 9. The adjusting screw 14 passes through the movable frame 15 and is threadedly connected to the movable frame 15. The adjusting screw 14 is connected to the rotating shaft 8 through a gear set 2 13. The gear set 2 13 consists of a circular gear 1, a circular gear 2, and a circular gear 3. The circular gear 1 is mounted on the rotating shaft 8. The circular gear 2 is rotatably mounted on the fixed frame 9. The circular gear 3 is mounted on the adjusting screw 14. The circular gear 2 is located between the circular gear 1 and the circular gear 3 and meshes with the circular gear 1 and the circular gear 3. The circular gear 1 has a notch. When the adjusting gear 12 is meshed with the arc-shaped rack, the notch on the circular gear 1 faces the circular gear 2. By rotating the rotating shaft... 8 drives the adjusting screw 14 to rotate, which in turn drives the fisheye camera 6 to move, making it easier to adjust the position of the fisheye camera 6. The annular mounting base 2 has an opening for the fisheye camera 6 to take pictures. A baffle 16 is slidably mounted on the annular mounting base 2 to block the opening. A roller frame 17 is mounted on the detection cylindrical shell 1. A connecting steel wire 18 is mounted on the moving frame 15. The connecting steel wire 18 is connected to the baffle 16 after passing through the roller frame 17. The position of the baffle 16 is adjusted by moving the moving frame 15. A limit rod is mounted on the annular mounting base 2. The limit rod passes through the baffle 16 and is slidably connected to the baffle 16. A push spring is sleeved on the limit rod. The push spring is connected to the baffle 16 and is used to push the baffle 16 to move and block the opening on the annular mounting base 2 when the fisheye camera 6 retracts.

[0037] An adjusting air cylinder 19 is installed on the outer shell 1 of the detection cylinder. A piston 22 is slidably installed inside the adjusting air cylinder 19. A connecting rod is installed on the fisheye camera 6. The connecting rod passes through the adjusting air cylinder 19 and is connected to the piston 22. An air guide pipe 20 is installed on the adjusting air cylinder 19. A nozzle is installed on the air guide pipe 20. The nozzle is set at an angle so that the airflow ejected from the nozzle can act on the lens of the fisheye camera 6 during the movement of the fisheye camera 6. An air supply branch pipe 21 is installed on the air guide pipe 20. An air inlet pipe is installed on the adjusting air cylinder 19. A one-way valve is installed on both the air inlet pipe and the air guide pipe 20.

[0038] A hand-held tube 7 is installed on the outer shell 1 of the detection cylinder. The hand-held tube 7 is used by the operator to pick up the tube. The hand-held tube 7 is sleeved on the rotating shaft 8 and is rotatably connected to the rotating shaft 8. A rotating wheel is sleeved on one end of the rotating shaft 8.

[0039] In actual use, the rotation power of the rotating shaft 8 can be controlled by a motor, which can improve the adjustment accuracy of the LED beads 3. Similarly, in actual use, a fixing device can be set on the outside of the hand grip 7 to fix the hand grip 7 in the hole when the hole is being tested, and set coaxially with the hole. The fixing device can be a ring that is sleeved on the hand grip 7 and has the same inner diameter as the hole.

[0040] In use, the operator holds the hand-held cylinder 7 and places the outer shell 1 of the detection cylinder into the hole to be detected. Rotating the rotating shaft 8 causes the adjusting screw 14 to rotate via the gear set 2 13, thereby moving the moving frame 15 and the fisheye camera 6. During the movement of the fisheye camera 6, the connecting steel wire 18 moves the baffle 16, opening the opening on the annular mounting base 2. The fisheye camera 6 then captures images of the hole through the opening. After the fisheye camera 6 is moved to the appropriate position, the rotating shaft 8 needs to be rotated slightly to engage the adjusting gear 12 with the arc-shaped rack, ensuring the LED beads 3 are in a vertical illumination state. In this state, the notch on the circular gear 1 faces the circular gear 2. At this point, by rotating the rotating shaft 8 slightly, the gear set 10 and the transmission rod 11 cause the annular adjusting base 4 to rotate, thereby adjusting the angle of the LED beads 3 to adapt to different lighting requirements and avoid glare.

[0041] When dust appears on the fisheye camera 6 or LED beads 3 and affects the shooting effect, the fisheye camera 6 can be retracted into the detection cylinder shell 1 by rotating the rotating shaft 8. At this time, the piston 22 will be pushed to move the regulating air cylinder 19. During this process, the gas in the regulating air cylinder 19 is transported through the air guide pipe 20 and acts on the fisheye camera 6 and LED beads 3 through the nozzle and air supply branch pipe 21 respectively, so as to clean the fisheye camera 6 and LED beads 3 in time and ensure the detection effect of the vision module.

[0042] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wide-angle vision module for detecting defects inside holes, comprising a cylindrical outer shell (1) for detection, characterized in that: An annular mounting seat (2) is installed on the outer shell (1) of the detection cylinder. An annular adjusting seat (4) is rotatably installed on the annular mounting seat (2). A fisheye camera (6) is provided on the outer shell (1) of the detection cylinder. An adjusting groove is provided on the annular adjusting seat (4). An LED bead (3) is provided on the annular mounting seat (2). A connecting ball (5) is nested on the LED bead (3). The connecting ball (5) is adapted to the adjusting groove. A rotating shaft (8) is rotatably mounted on the outer shell (1) of the detection cylinder. A transmission assembly is provided on the outer shell (1) of the detection cylinder. The rotating shaft (8) drives the annular adjusting seat (4) to rotate through the transmission assembly. A fixed frame (9) is installed on the outer shell (1) of the test cylinder. One end of the rotating shaft (8) is rotatably connected to the fixed frame (9). A transmission rod (11) is rotatably installed on the fixed frame (9). The transmission rod (11) is connected to the rotating shaft (8) through a gear set (10). An adjusting gear (12) is sleeved on the transmission rod (11). An arc rack is installed on the annular adjusting seat (4). The arc rack meshes with the adjusting gear (12). An arc-shaped limiting rod is installed on the annular mounting base (2), and a sliding block is installed on the arc-shaped rack. The arc-shaped limiting rod passes through the sliding block, and two reset springs are sleeved on the arc-shaped limiting rod. The two reset springs are symmetrically arranged on both sides of the sliding block to reset the tilted sliding block, thereby indirectly achieving the correction of the annular adjusting base (4). A movable frame (15) is slidably mounted on the outer shell (1) of the detection cylinder. The movable frame (15) is connected to the fisheye camera (6). An adjusting screw (14) is rotatably mounted on the fixed frame (9). The adjusting screw (14) passes through the movable frame (15) and is threadedly connected to the movable frame (15). The adjusting screw (14) is connected to the rotating shaft (8) through the gear set two (13). By rotating the rotating shaft (8), the adjusting screw (14) is driven to rotate, which in turn drives the fisheye camera (6) to move, so as to facilitate the adjustment of the position of the fisheye camera (6). Gear set 1 (10) consists of circular gear 4 and circular gear 5. Circular gear 4 is mounted on the rotating shaft (8), and circular gear 5 is mounted on the transmission rod (11). Circular gear 4 and circular gear 5 are meshed and connected. Gear set two (13) consists of circular gear one, circular gear two and circular gear three. Circular gear one is mounted on the rotating shaft (8), circular gear two is rotatably mounted on the fixed frame (9), and circular gear three is mounted on the adjusting screw (14). Circular gear two is located between circular gear one and circular gear three and meshes with circular gear one and circular gear three. Circular gear one is provided with a notch. When the adjusting gear (12) and the arc rack are in meshing state, the notch on circular gear one faces circular gear two.

2. The wide-angle vision module for detecting defects inside holes according to claim 1, characterized in that: An opening is provided on the annular mounting base (2) for the fisheye camera (6) to take pictures. A baffle (16) is slidably installed on the annular mounting base (2) to block the opening. A roller frame (17) is installed on the detection cylindrical shell (1). A connecting wire (18) is installed on the movable frame (15). The connecting wire (18) is connected to the baffle (16) after passing through the roller frame (17). The position of the baffle (16) is adjusted by moving the movable frame (15).

3. The wide-angle vision module for detecting defects inside holes according to claim 2, characterized in that: An adjusting air cylinder (19) is installed on the outer shell (1) of the detection cylinder. A piston (22) is slidably installed inside the adjusting air cylinder (19). A connecting rod is installed on the fisheye camera (6). The connecting rod passes through the adjusting air cylinder (19) and is connected to the piston (22). An air guide pipe (20) is installed on the adjusting air cylinder (19). A nozzle is installed on the air guide pipe (20). An air supply branch pipe (21) is installed on the air guide pipe (20). An air inlet pipe is installed on the adjusting air cylinder (19). A one-way valve is installed on both the air inlet pipe and the air guide pipe (20).

4. A wide-angle vision module for detecting defects inside holes according to claim 3, characterized in that: The adjustment groove is inclined. When the annular adjustment seat (4) rotates, it will adjust the height of the connecting ball (5), which will then drive the LED lamp bead (3) to rotate and adjust the illumination angle of the LED lamp bead (3).

5. A wide-angle vision module for detecting defects inside holes according to claim 4, characterized in that: A hand-held tube (7) is installed on the outer shell (1) of the detection cylinder. The hand-held tube (7) is sleeved on the rotating shaft (8) and rotatably connected to the rotating shaft (8). A rotating wheel is sleeved on one end of the rotating shaft (8).

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