Omnibearing detector for inner surface of cavity

Abstract

The utility model discloses an omni-directional detector for the inner surface of a cavity. The omni-directional detector comprises a control system, a telescopic rod, a first steering system, a frame, a second steering system, a third steering system and a detection part, the first steering system controls the frame to rotate in the horizontal direction, the second steering system controls the detection part to rotate in the vertical direction, and the third steering system controls the detection part to rotate by 360 degrees. The detection part comprises an I-shaped turnover plate, lenses mounted on the two sides of the turnover plate, extension blocks mounted at the upper end and the lower end of the two sides of the turnover plate, pinhole cameras mounted on the opposite surfaces of the two extension blocks on the same side and LED lamp strips mounted on the turnover plate and located on the two sides of the lenses, and the third steering system is in transmission connection with the bottom of the turnover plate. According to the lens reflection imaging principle, images in the lens are shot in real time through the pinhole camera, and the images shot by the pinhole camera are watched through external display equipment, so that defect parts are quickly found out.

Description

Technical Field

[0001] The utility model relates to the technical field of cavity detection, in particular to an all-round detector for the inner surface of a cavity. Background Art

[0002] In the era of rapid development of railways, quality plays a vital role. Without the protection of high-quality products, the vigorous development of rail transit will be restricted and it will bring disaster to the country and the people. Only the production of reliable product quality reputation is inevitable for the development of enterprises, and only high-quality product quality is the cornerstone of enterprise development.

[0003] In the past, flaw detection inspections were mostly carried out through magnetic powder, penetration, ultrasonic, X-ray, eddy current and other methods. These inspection methods can inspect the quality of the outer surface, but require an operable plane, and some also require equipment assistance. Flaw detection inspectors must undergo training to obtain qualifications and be qualified to inspect and issue flaw detection reports. They also have the characteristics of high accuracy of inspection results, high cost, and long inspection cycle. The disadvantage is that quality defects at internal edges and corners cannot be inspected.

[0004] Radiographic inspection can realize comprehensive inspection of inner surfaces with cavities, but it requires qualifications, and the site and lead room must meet the requirements. Inspections can only be carried out after personnel have received special operation qualification training. It is only suitable for inspections of key parts in the running parts of rail vehicles, and is not suitable for inspections of other inner surfaces with cavities on rail vehicles.

[0005] Endoscopic inspection can insert the probe into the interior of the component to inspect the inner surface of the cavity. During use, the probe cannot be rotated flexibly due to the restriction of the probe's own wire. For example, when it cannot rotate 360° in a small space, it is easy to scratch and damage the probe and the lighting. Long-term use of the probe will cause multiple factors such as scratches and dust erosion during use, which will cause blurred images and mixed lens defects in the picture, which will affect the inspection of the inner surface of the cavity. In addition, the equipment itself is of high value, expensive maintenance costs, and is not suitable for carrying. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides an all-round detector for the inner surface of the cavity to solve the problems mentioned in the above-mentioned background technology, and has the characteristics of high efficiency, low economic cost and reliable inspection results. It can expand the scope of quality inspection, improve product quality, achieve a leap in improving product quality, and fill the gap in such inspection methods in the rail vehicle industry.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0008] A full-range detector for the inner surface of a cavity comprises a control system, a retractable rod, a first steering system, a frame, a second steering system, a third steering system and a detection unit, wherein the control system is connected to one end of the telescopic rod, the telescopic end of the telescopic rod is connected to the first steering system, the other end of the first steering system is connected to the frame, the second steering system is mounted on the other end of the frame, the second steering system is provided with a third steering system, and the detection unit is mounted on the third steering system; the first steering system controls the frame to rotate in the horizontal direction, the second steering system controls the detection unit to rotate in the vertical direction, and the third steering system controls the detection unit to rotate 360°; the detection unit comprises an I-shaped flip plate, lenses mounted on both sides of the flip plate, extension blocks mounted on the upper and lower ends of both sides of the flip plate, and pinhole cameras mounted on opposite surfaces of the two extension blocks on the same side, the detection unit also comprises an LED light strip mounted on the flip plate and located on both sides of the lens, and the third steering system is transmission-connected to the bottom of the flip plate.

[0009] Preferably, the control system includes a handle, a control panel installed in the handle and a first battery, the control panel is provided with a Bluetooth transmission module, and the end of the handle is provided with a first charging port.

[0010] Preferably, the first steering system includes two L-shaped first shells and second shells, a first motor installed in the first shell, and a first transmission shaft connected to the first motor through a coupling. The first shell and the second shell are mirror-arranged, the first transmission shaft is connected to the second shell, and mounting grooves are provided at opposite ends of the first shells and the second shells, one end of the telescopic rod is threadedly connected to the mounting groove on the first shell, and one end of the frame is threadedly connected to the mounting groove on the second shell.

[0011] Preferably, the second steering system includes a third housing, a first rotating shaft fixedly connected to both ends of the third housing, and a second motor installed inside one end of the frame. The two first rotating shafts are rotatably connected to the frame. The second motor is connected to a second transmission shaft through a coupling, and the second transmission shaft is connected to a main gear. One of the first rotating shafts is connected to a sub-gear, and the main gear is meshed with the sub-gear.

[0012] Preferably, the third steering system includes a third motor disposed in the upper inner portion of the third housing, the third motor is connected to a third transmission shaft via a coupling, and the third transmission shaft is threadedly connected to the bottom of the flip plate.

[0013] Preferably, a second storage battery is provided in the lower part of the third shell, and a second charging port is provided on one side of the third shell.

[0014] Preferably, the first motor, the control board are electrically connected to the first battery; the second motor, the third motor, the LED light strip, and the pinhole camera are all electrically connected to the second battery; there is a power switch and five direction keys on the handle, and the five direction keys are respectively used to control the operation of the first motor, the second motor, and the third motor.

[0015] Preferably, a memory card slot is provided at the top of the flip plate.

[0016] Preferably, a laser distance sensor is also installed on the extension block.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The detection part is extended into the interior of the object to be detected, the distance reached by the detection part is adjusted through the telescopic rod, the detection part is controlled to rotate in the horizontal direction through the first steering system, so as to adjust the angle of the detection part in the horizontal direction, the detection part is controlled to rotate in the vertical direction through the second steering system, so as to adjust the angle of the detection part in the vertical direction, and the detection part is controlled to rotate 360° through the third steering system, so as to realize the comprehensive adjustment of the direction of the detection part, realize non-blind detection, and improve the efficiency of detecting defects in the cavity.

[0019] During detection, the principle of lens reflection imaging is utilized, and the image inside the lens is actually captured by the pinhole camera, and the image captured by the pinhole camera is viewed through an external display device, so as to quickly find the defective part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the utility model;

[0021] Figure 2 is a schematic diagram of the first steering system;

[0022] Figure 3 is a schematic diagram of the second steering system and the third steering system;

[0023] Figure 4 is a top view of the frame, the second steering system and the third steering system;

[0024] Figure 5 is a schematic diagram of the detection part;

[0025] Figure 6 is a schematic diagram when the detection part is detecting;

[0026] In the figure: 1 - control system, 101 - handle, 102 - first charging port, 103 - power switch, 104 - direction keys, 2 - telescopic rod, 3 - first steering system, 301 - first housing, 302 - second housing, 303 - first motor, 304 - mounting groove, 4 - frame, 5 - second steering system, 501 - third housing, 502 - first rotating shaft, 503 - second motor, 504 - main gear, 505 - auxiliary gear, 506 - second battery, 507 - second charging port, 6 - third steering system, 601 - third motor, 602 - third transmission shaft, 7 - detection unit, 701 - flip plate, 702 - lens, 703 - extension block, 704 - pinhole camera, 705 - LED light strip, 706 - memory card slot. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] Please refer to Figures 1-5 , a full - range detector for the inner surface of a cavity, including a control system 1, a telescopic rod 2, a first steering system 3, a frame 4, a second steering system 5, a third steering system 6, and a detection unit 7. The control system 1 is connected to one end of the telescopic rod 2, the telescopic end of the telescopic rod 2 is connected to the first steering system 3, the other end of the first steering system 3 is connected to the frame 4, the second steering system 5 is installed at the other end of the frame 4, the third steering system 6 is provided on the second steering system 5, and the detection unit 7 is installed on the third steering system 6; the first steering system 3 controls the frame 4 to rotate in the horizontal direction, the second steering system 5 controls the detection unit 7 to rotate in the vertical direction, and the third steering system 6 controls the detection unit to rotate 360°. The telescopic rod 2 can be an electric telescopic rod or a manual telescopic rod and is positioned by bolts.

[0030] Specifically, the control system 1 includes a handle 101, a control board installed in the handle 101, and a first battery. The control board is provided with a Bluetooth transmission module to transmit signals to a mobile phone or other external displays. A first charging port 102 is provided at the end of the handle 101 to charge the first battery through the first charging port 102.

[0031] As Figure 2As shown in the figure, the first steering system 3 includes two L-shaped first housings 301 and second housings 302, a first motor 303 installed in the first housing, and a first transmission shaft connected to the first motor through a coupling. The first housings 301 and the second housings 302 are arranged in a mirror image. The first transmission shaft is connected to the second housing 302. Installation grooves 304 are provided at opposite ends of the two first housings 301 and the second housings 302. One end of the telescopic rod 2 is threadedly connected to the installation groove on the first housing 301, and one end of the frame 4 is threadedly connected to the installation groove on the second housing 302. Start the first motor 303 to drive the first transmission shaft to rotate, which can drive the second housing 302 to rotate, thereby adjusting the direction of the detection unit 7 in the horizontal plane.

[0032] As Figure 3 shown in the figure, the second steering system 5 includes a third housing 501, first rotating shafts 502 fixedly connected to both ends of the third housing, and a second motor 503 installed inside one end of the frame. The two first rotating shafts 502 are rotatably connected to the frame 4. A second transmission shaft is connected to the second motor 503 through a coupling, and a main gear 504 is connected to the second transmission shaft. A sub-gear 505 is connected to one of the first rotating shafts 502. The main gear 504 meshes with the sub-gear 505. Start the second motor 503 to drive the second transmission shaft to rotate. Through the cooperation of the main gear 504 and the sub-gear 505, the first rotating shaft is driven to rotate, thereby driving the third housing 501 to rotate to adjust the angle of the detection unit 7 in the vertical direction.

[0033] The third steering system 6 includes a third motor 601 provided in the upper part of the third housing. The third motor 601 is connected to a third transmission shaft 602 through a coupling, and the third transmission shaft 602 is threadedly connected to the bottom of the flip plate 701. Start the third motor 601 to drive the third transmission shaft 602 to rotate, thereby driving the detection unit to make a 360° rotation.

[0034] The detection unit 7 includes an I-shaped flip plate 701, lenses 702 installed on both sides of the flip plate, extension blocks 703 installed at the upper and lower ends on both sides of the flip plate, and pinhole cameras 704 installed on the opposite surfaces of the two extension blocks on the same side. The detection unit 7 further includes LED light strips 705 installed on the flip plate and located on both sides of the lenses. The third steering system 6 is drivingly connected to the bottom of the flip plate 701. Place the detection unit into the cavity, utilize the principle of reflection imaging of the lenses, and through the pinhole cameras, the images inside the lenses are captured in real time. View the images captured by the pinhole cameras through an external display device to quickly find the defective parts.

[0035] In addition, a second storage battery 506 is provided in the lower part of the third housing 501, and a second charging port 507 is provided on one side of the third housing 501. The second storage battery 506 is charged through the second charging port 507.

[0036] The first motor 303 and the control board are electrically connected to the first storage battery, and the first storage battery supplies power to the first motor and the control board. The second motor 503, the third motor 601, the LED light strip 705, and the pinhole camera 704 are all electrically connected to the second storage battery 506, and the second storage battery 506 supplies power to the second motor 503, the third motor 601, the LED light strip 705, and the pinhole camera 704. A power-on key 103 and five direction keys 104 are provided on the handle 101. The power-on key is used to start the device, and the five direction keys 104 are respectively used to control the operation of the first motor 303, the second motor 503, and the third motor 601 to control the left and right rotation, up and down rotation, or 360° self-rotation of the detection unit 7.

[0037] In addition, the first motor, the second motor, the third motor, and the pinhole camera are all electrically connected to the control board. A control program is provided in the control board to control the operation of the above components, and the image captured by the pinhole camera is transmitted to a mobile phone or other external display device through the Bluetooth transmission module for observation.

[0038] The working principle of this embodiment is as follows: The detection unit 7 is extended into the object to be detected. The distance reached by the detection unit 7 is adjusted through the telescopic rod 2. The detection unit 7 is controlled to rotate in the horizontal direction through the first steering system 3, thereby adjusting the angle of the detection unit 7 in the horizontal direction. The detection unit 7 is controlled to rotate in the vertical direction through the second steering system 5, thereby adjusting the angle of the detection unit 7 in the vertical direction. The detection unit 7 is controlled to perform 360° self-rotation through the third steering system 6, thereby realizing a comprehensive adjustment of the direction of the detection unit 7 and achieving non-blind detection, improving the efficiency of detecting defects in the cavity. During detection, the LED light strip 705 is used to provide illumination. Using the principle of plane mirror reflection imaging, the defective part is reflected to the pinhole camera 704 through the lens 702 (as Figure 6 shown), and the pinhole camera 704 captures the image in the lens 702 in real time and transmits it to the mobile phone or other external display through the Bluetooth transmission module. Through the observation of the worker, the defective part in the cavity can be quickly found.

[0039] In addition, a laser distance sensor is also installed on the extension block 703. Installing a laser distance sensor on the extension block 703 can measure the distance to the welding position. Combining it with the pinhole camera can find the undulating state of the spot welding position. The real-time image of the lens is captured by the camera and transmitted to the automatic welding machine equipment program for automatic welding through real-time imaging, avoiding the problem of unable to solve the offset problem due to the lack of real image transmission. Moreover, on the inner surface of the cavity, the welding machine can be fixed with an auxiliary tool through the function of the detector, and the welding equipment can be controlled blindly outside according to the real-time image, solving the problem that the inner surface of the cavity could not be welded in the past.

[0040] Embodiment 2

[0041] The difference between this embodiment and Embodiment 1 lies in that a memory card slot 706 is provided at the top of the flipping plate 701. A memory card is inserted into the memory card slot 706. The images captured by the pinhole camera are stored in the memory card. After the detection is completed, the memory card is removed and inserted into a display device such as a computer for the inspectors to further carefully analyze the defective parts.

[0042] It should be noted that the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including the said element.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An all-round detector for the inner surface of a cavity, characterized in that: The invention comprises a control system (1), a telescopic rod (2), a first steering system (3), a frame (4), a second steering system (5), a third steering system (6) and a detection unit (7); the control system (1) is connected to one end of the telescopic rod (2); the telescopic end of the telescopic rod (2) is connected to the first steering system (3); the other end of the first steering system (3) is connected to the frame (4); the second steering system (5) is mounted on the other end of the frame (4); the third steering system (6) is arranged on the second steering system (5); and the detection unit (7) is mounted on the third steering system (6); the first steering system (3) controls the frame (4) to rotate in the horizontal direction; the second steering system (5) controls the detection unit (7) to rotate in the vertical direction; and the third steering system (6) controls the detection unit (7) to rotate 360 ​​degrees; The detection unit (7) comprises an I-shaped flip plate (701), lenses (702) mounted on both sides of the flip plate, extension blocks (703) mounted on the upper and lower ends of both sides of the flip plate, and pinhole cameras (704) mounted on opposite surfaces of the two extension blocks on the same side. The detection unit (7) also comprises an LED light strip (705) mounted on the flip plate and located on both sides of the lenses. The third steering system (6) is drivingly connected to the bottom of the flip plate (701).

2. The cavity inner surface omnidirectional detector according to claim 1, characterized in that: The control system (1) comprises a handle (101), a control panel installed in the handle (101), and a first storage battery; the control panel is provided with a Bluetooth transmission module; and the end of the handle (101) is provided with a first charging port (102).

3. The cavity inner surface omnidirectional detector according to claim 2, characterized in that: The first steering system (3) comprises two L-shaped first shells (301) and a second shell (302), a first motor (303) installed in the first shell, and a first transmission shaft connected to the first motor via a coupling. The first shell (301) and the second shell (302) are arranged in a mirror image, the first transmission shaft is connected to the second shell (302), opposite ends of the first shells (301) and the second shells (302) are provided with mounting grooves (304), one end of the telescopic rod (2) is threadedly connected to the mounting groove on the first shell (301), and one end of the frame (4) is threadedly connected to the mounting groove on the second shell (302).

4. The cavity inner surface omnidirectional detector according to claim 3, characterized in that: The second steering system (5) comprises a third housing (501), a first rotating shaft (502) fixedly connected to both ends of the third housing, and a second motor (503) installed inside one end of the frame, the two first rotating shafts (502) are rotationally connected to the frame (4), the second motor (503) is connected to a second transmission shaft via a coupling, the second transmission shaft is connected to a main gear (504), one of the first rotating shafts (502) is connected to a sub-gear (505), and the main gear (504) is meshed with the sub-gear (505).

5. The cavity inner surface omnidirectional detector according to claim 4, characterized in that: The third steering system (6) comprises a third motor (601) arranged in the upper part of the third housing, the third motor (601) is connected to a third transmission shaft (602) via a coupling, and the third transmission shaft (602) is threadedly connected to the bottom of the flip plate (701).

6. The cavity inner surface omnidirectional detector according to claim 5, characterized in that: A second storage battery (506) is provided in the lower part of the third shell (501), and a second charging port (507) is provided on one side of the third shell (501).

7. The cavity inner surface omnidirectional detector according to claim 6, characterized in that: The first motor (303) and the control panel are electrically connected to the first battery; the second motor (503), the third motor (601), the LED light strip (705), and the pinhole camera (704) are all electrically connected to the second battery (506); a switch key (103) and five direction keys (104) are provided on the handle (101), and the five direction keys (104) are respectively used to control the operation of the first motor (303), the second motor (503), and the third motor (601).

8. The cavity inner surface omnidirectional detector according to claim 7, characterized in that: A storage card slot (706) is provided on the top of the flip plate (701).

9. The cavity inner surface omnidirectional detector according to claim 7, characterized in that: A laser distance sensor is also installed on the extension block.

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