Omnibearing detector for inner surface of cavity

Abstract

The invention 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 invention 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. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides an all-round detector for the inner surface of the cavity to solve the problems mentioned in the above background technology. It 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 present invention 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 and 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; a switch key and five direction keys are provided on the handle, and the five direction keys are used to control the operation of the first motor, the second motor, and the third motor respectively.

[0015] Preferably, a storage card slot is provided on 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 present invention has the following beneficial effects:

[0018] The detection part is extended to the inside of the object to be detected, and the distance reached by the detection part is adjusted by the telescopic rod. The detection part is controlled to rotate in the horizontal direction by the first steering system, thereby adjusting the angle of the detection part in the horizontal direction. The detection part is controlled to rotate in the vertical direction by the second steering system, thereby adjusting the angle of the detection part in the vertical direction. The detection part is controlled to rotate 360° by the third steering system, thereby realizing comprehensive adjustment of the direction of the detection part, realizing detection without blind spots, and improving the efficiency of detecting defects in the cavity.

[0019] During inspection, the principle of lens reflection imaging is used, and the image inside the lens is captured in real time through a pinhole camera. The image captured by the pinhole camera is viewed through an external display device to quickly identify defective areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the present invention;

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

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

[0025] Figure 6 It is a schematic diagram of the detection unit during detection;

[0026] In the figure: 1-control system, 101-handle, 102-first charging port, 103-on / off key, 104-direction key, 2-telescopic rod, 3-first steering system, 301-first shell, 302-second shell, 303-first motor, 304-installation slot, 4-frame, 5-second steering system, 501-third shell, 502-first rotating shaft, 503-second motor, 504-main gear, 505-secondary 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-storage card slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figure 1-5 A cavity inner surface all-round detector includes 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 second steering system 5 is provided with a third steering system 6, 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 panel installed in the handle 101, and a first battery. The control panel is provided with a Bluetooth transmission module to transmit signals to a mobile phone or other external display. A first charging port 102 is provided at the end of the handle 101, and the first battery is charged through the first charging port 102.

[0031] like Figure 2As shown, the first steering system 3 includes two L-shaped first shells 301 and second shells 302, a first motor 303 installed in the first shell, and a first transmission shaft connected to the first motor through a coupling. The first shell 301 and the second shell 302 are arranged in mirror image, and the first transmission shaft is connected to the second shell 302. The opposite ends of the first shells 301 and the second shells 302 are both 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. Start the first motor 303 to drive the first transmission shaft to rotate, which can drive the second shell 302 to rotate, thereby adjusting the direction of the detection part 7 in the horizontal plane.

[0032] like Figure 3 As shown, the second steering system 5 includes 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 rotatably connected to the frame 4. The second motor 503 is connected to a second transmission shaft through a coupling, and 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. Start the second motor 503 to drive the second transmission shaft to rotate, and through the cooperation of the main gear 504 and the sub-gear 505, drive the first rotating shaft to rotate, thereby driving the third housing 501 to rotate, so as to adjust the angle of the detection part 7 in the vertical direction.

[0033] The third steering system 6 includes a third motor 601 disposed in the upper inner portion 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. When the third motor 601 is started, the third transmission shaft 602 is driven to rotate, thereby driving the detection part to rotate 360°.

[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 on the upper and lower ends of both sides of the flip plate, and pinhole cameras 704 installed on the opposite sides of the two extension blocks on the same side. The detection unit 7 also includes an LED light strip 705 installed on the flip plate and located on both sides of the lenses. The third steering system 6 is connected to the bottom of the flip plate 701. The detection unit is placed in the mold cavity, and the image in the lens is captured by the pinhole camera in real time using the lens reflection imaging principle, and the image captured by the pinhole camera is viewed through the external display equipment, so as to quickly find the defective part.

[0035] In addition, a second storage battery 506 is disposed at the lower portion of the third housing 501 , and a second charging port 507 is disposed at one side of the third housing 501 , through which the second storage battery 506 is charged.

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

[0037] In addition, the first motor, the second motor, the third motor, and the pinhole camera are all electrically connected to the control board. The control board is provided with a control program for controlling the operation of the above components and transmitting the images taken by the pinhole camera to a mobile phone or other external display device via a Bluetooth transmission module for observation.

[0038] The working principle of this embodiment is as follows: extend the detection part 7 to the inside of the object to be detected, adjust the distance reached by the detection part 7 through the telescopic rod 2, control the detection part 7 to rotate in the horizontal direction through the first steering system 3, thereby adjusting the angle of the detection part 7 in the horizontal direction, control the detection part 7 to rotate in the vertical direction through the second steering system 5, thereby adjusting the angle of the detection part 7 in the vertical direction, and control the detection part 7 to rotate 360° through the third steering system 6, thereby achieving comprehensive adjustment of the direction of the detection part 7, achieving detection without blind spots, and improving the efficiency of detecting defects in the cavity. During detection, the LED light strip 705 is used to provide lighting, and the plane mirror reflection imaging principle is used to reflect the defective part through the lens 702 to the pinhole camera 704 (such as Figure 6 As shown), the pinhole camera 704 takes real-time images of the inside of the lens 702 and transmits them to an external mobile phone or other external display via a Bluetooth transmission module. Through observation by workers, defective parts in the cavity can be quickly found.

[0039] In addition, a laser distance sensor is also installed on the extension block 703. The laser distance sensor is installed on the extension block 703 to measure the distance from the welding position. When combined with the needle camera, the undulating state of the spot welding position can be found. The real-time image of the lens is captured by the camera, and the real-time imaging is transmitted to the automatic welding machine equipment program for automatic welding, so as to avoid the problem of being unable to solve the offset problem due to the lack of real image transmission. Moreover, on the inner surface of the cavity, through the function of the detector, the welding machine can be fixed with auxiliary tooling, and the welding equipment can be controlled outside according to the real-time image for blind welding, which can solve the problem that the inner surface of the cavity cannot be welded in the past.

[0040] Example 2

[0041] The difference between this embodiment and the first embodiment is that a memory card slot 706 is provided on the top of the flip plate 701. A memory card is inserted into the memory card slot 706, and the images taken by the pinhole camera are stored in the memory card. After the inspection is completed, the memory card is removed and inserted into a display device such as a computer, so that the inspector can further analyze the defective parts in detail.

[0042] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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.

Images