Non-contact line surface inspection device

Abstract

The invention discloses a non-contact line surface inspection device, and relates to the technical field of track line inspection, the non-contact line surface inspection device comprises an under-vehicle inspection beam and dead angle mapping assemblies, a first linear array camera is arranged in the middle of the surface of the under-vehicle inspection beam, and the dead angle mapping assemblies are arranged at the two ends of the under-vehicle inspection beam. The dead angle mapping assembly comprises a fixing frame, a protective shell, a mapping hole and a reflector, the protective shell is fixed to the bottom of the fixing frame, and the mapping hole is formed in the middle of the side face of the protective shell. According to the non-contact line surface inspection device, when the first line-scan digital camera and the second line-scan digital camera collect images of the surface of the track, the surface of the track has a dead angle in image collection operation due to the I-shaped structure of the track, and the dead angle part of the track can be reflected through the reflecting mirror at the moment; and the mirror surface part of the reflecting mirror is located in the detection range of the second linear array camera, so that the second linear array camera can collect images of the dead angle part of the track through the reflecting mirror.

Description

Technical Field

[0001] The invention relates to the technical field of track line inspection, in particular to a non-contact line surface inspection device. Background Art

[0002] The non-contact track surface inspection device is a device that captures images of the rail track surface and detects defects. The non-contact track surface inspection device is installed at the bottom of the carriage and moves with the carriage. During the movement, a linear array camera is used to capture images of the track surface in real time.

[0003] When the existing non-contact line surface inspection device collects images of the track surface, because the track is in an I-shaped structure and the camera collects images from top to bottom, some parts of the I-shaped track surface are in blind spots for image collection, resulting in incomplete track surface images.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a non-contact circuit surface inspection device is proposed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a non-contact circuit surface inspection device, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a non-contact line surface inspection device, including an under-vehicle inspection beam and a blind spot mapping component, a first linear array camera is arranged in the middle of the surface of the under-vehicle inspection beam, and a second linear array camera is arranged on both sides of the surface of the under-vehicle inspection beam, the blind spot mapping component is arranged at both ends of the under-vehicle inspection beam, the blind spot mapping component includes a fixing frame, a protective shell, a mapping hole and a reflector, a protective shell is fixed to the bottom of the fixing frame, and a mapping hole is opened in the middle of the side of the protective shell, and a reflector is arranged inside the protective shell.

[0007] Furthermore, the mapping hole is in a square structure, and faces the side of the rail, and the size of the reflector is larger than the inner diameter of the mapping hole.

[0008] Furthermore, the blind spot mapping assembly also includes a servo motor, a reciprocating screw and a movable base. The servo motor is fixed to one side of the protective shell, and the reciprocating screw is connected to one side of the servo motor. The outer wall of the reciprocating screw is provided with a movable base.

[0009] Furthermore, the side surface of the movable base is fixed to the back surface of the reflector, and the reflector is slidably connected to the protective shell through the movable base.

[0010] Furthermore, a cleaning assembly is arranged on the side of the protective shell at both sides of the mapping hole, and the cleaning assembly includes a protective shell and a connecting hole, and a connecting hole is opened at the bottom of the protective shell.

[0011] Furthermore, the interior of the protective shell is connected to the interior of the protective shell through a connecting hole, and the connecting hole is a square structure.

[0012] Furthermore, the cleaning component also includes a driving motor and a driving roller. The driving motor is fixed to the outer wall of the protective shell, and the output end of the driving motor is connected to the driving roller inside the protective shell.

[0013] Furthermore, the cleaning assembly also includes a cleaning cloth, and the outer wall of the driving roller is provided with the cleaning cloth.

[0014] Furthermore, the cleaning cloth is arranged in an inclined state, and the lower surface of the bottom end of the cleaning cloth is in contact with the surface of the reflector, and the head and tail ends of the cleaning cloth are bonded to each other by Velcro.

[0015] Furthermore, the cleaning assembly also includes a snap-fit ​​cover plate, and the top surface of the protective shell is snap-fitted and connected with the snap-fit ​​cover plate.

[0016] The present invention provides a non-contact circuit surface inspection device, which has the following beneficial effects:

[0017] 1. In the non-contact line surface inspection device, when the first line array camera and the second line array camera collect images of the track surface, the track surface will have a portion in a blind spot during the image collection operation due to its I-shaped structure. At this time, the blind spot of the track can be reflected by the reflector, and the mirror surface of the reflector is within the detection range of the second line array camera. Therefore, the second line array camera can collect images of the blind spot of the track by means of the reflector.

[0018] 2. The non-contact line surface inspection device regularly starts the servo motor to drive the reciprocating screw to rotate so that the mobile base carries the reflector to slide left and right inside the protective shell, so that different parts of the reflector surface are exposed at the mapping hole, so that different parts of the reflector surface are used to map the blind spots of the track, thereby avoiding a single part of the reflector surface being exposed for a long time and adhering to dust in the air, which may cause misdetection during image acquisition and detection.

[0019] 3. In the non-contact line surface inspection device, each time the reflector slides, the lower surface of the bottom end of the cleaning cloth wipes the sliding surface of the reflector, so that when the reflector is adjusting the position for mapping the image, the redundant position can be wiped, so that the position can be kept clean and ready for image mapping operation after wiping, and after each sliding of the reflector, the driving motor drives the driving roller to rotate so that the cleaning cloth can be transmitted, so that the position of the reflector surface that has been wiped by the lower surface of the bottom end of the cleaning cloth is replaced, so that the position of the cleaning cloth that wipes the reflector surface is different each time, so as to ensure that the wiped part of the reflector surface is clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the blind spot during orbital image acquisition;

[0021] Figure 2 It is a schematic diagram of the structure of the under-vehicle inspection beam of the non-contact line surface inspection device of the present invention;

[0022] Figure 3 It is a schematic diagram of the mapping hole structure of the non-contact circuit surface inspection device of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the protective housing of the non-contact circuit surface inspection device of the present invention;

[0024] Figure 5 It is a schematic diagram of the back structure of the reflector of the non-contact circuit surface inspection device of the present invention;

[0025] Figure 6 The figure is a schematic diagram of the structure of the cleaning cloth of the non-contact circuit surface inspection device of the present invention.

[0026] In the figure: 1. under-vehicle inspection beam; 2. first line array camera; 3. second line array camera; 4. blind spot mapping assembly; 401. fixing frame; 402. protective shell; 403. mapping hole; 404. reflector; 405. servo motor; 406. reciprocating screw rod; 407. moving base; 5. cleaning assembly; 501. protective shell; 502. connecting hole; 503. driving motor; 504. driving roller; 505. cleaning cloth; 506. snap-fit ​​cover. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figure 1-Figure 6As shown, the present invention provides a technical solution: a non-contact line surface inspection device, comprising an under-vehicle inspection beam 1 and a blind spot mapping component 4, wherein a first linear array camera 2 is arranged in the middle of the surface of the under-vehicle inspection beam 1, and second linear array cameras 3 are arranged on both sides of the surface of the under-vehicle inspection beam 1, and the blind spot mapping component 4 is arranged at both ends of the under-vehicle inspection beam 1, and the blind spot mapping component 4 comprises a fixing frame 401, a protective shell 402, a mapping hole 403 and a reflector 404, a protective shell 402 is fixed to the bottom of the fixing frame 401, and a mapping hole 403 is opened in the middle of the side of the protective shell 402, and a reflector 404 is arranged inside the protective shell 402, the mapping hole 403 is in a square structure, and the mapping hole 403 faces the side of the rail, and the size of the reflector 404 is larger than the inner diameter of the mapping hole 403;

[0029] The specific operation is as follows: the second line array camera 3 is located above the left and right rails, and the first line array camera 2 is located above the center line of the rail. When the undercar inspection beam 1 moves along the rail surface with the vehicle body, the first line array camera 2 and the second line array camera 3 collect images of the rail surface and transmit them to the ground integrated data center. The ground integrated data center performs non-contact detection on the rail surface based on the collected images to detect whether there are defects on the rail surface. The first line array camera 2 and the second line array camera 3 are equipped with LED lights to eliminate the influence of ambient light.

[0030] When the first line array camera 2 and the second line array camera 3 collect images of the track surface, Figure 1 The shaded area shown in the figure is in a blind spot in the image acquisition operation. At this time, the blind spot of the track can be reflected by the reflector 404, and the mirror surface of the reflector 404 is in the detection range of the second line array camera 3. Therefore, the second line array camera 3 can capture the image of the blind spot of the track through the reflector 404.

[0031] like Figure 1-Figure 6 As shown, the blind spot mapping assembly 4 further includes a servo motor 405, a reciprocating screw 406 and a moving base 407. The servo motor 405 is fixed to one side of the protective shell 402, and the reciprocating screw 406 is connected to one side of the servo motor 405. The outer wall of the reciprocating screw 406 is provided with a moving base 407. The side of the moving base 407 is fixed to the back of the reflector 404, and the reflector 404 is slidably connected to the protective shell 402 through the moving base 407.

[0032] The specific operation is as follows: only the part of the reflector 404 that overlaps with the mapping hole 403 is exposed for operation; by regularly starting the servo motor 405 to drive the reciprocating screw 406 to rotate, the movable base 407 carries the reflector 404 to slide left and right inside the protective shell 402, so that different parts of the surface of the reflector 404 are exposed at the mapping hole 403, so that different parts of the surface of the reflector 404 are used to map the blind spots of the track, thereby avoiding a single part of the surface of the reflector 404 being exposed for a long time and adhering to dust in the air, which may cause misdetection during image acquisition and detection.

[0033] like Figure 1-Figure 6 As shown, a cleaning assembly 5 is arranged on both sides of the mapping hole 403 on the side of the protective shell 402, and the cleaning assembly 5 includes a protective shell 501 and a connecting hole 502. The bottom of the protective shell 501 is provided with a connecting hole 502, and the interior of the protective shell 501 is connected to the interior of the protective shell 402 through the connecting hole 502, and the connecting hole 502 is a square structure. The cleaning assembly 5 also includes a driving motor 503 and a driving roller 504. The outer wall of the protective shell 501 is fixed with the driving motor 503, and the driving roller 504 is provided with a driving motor 503. The output end of the motor 503 is connected to a driving roller 504 inside the protective housing 501. The cleaning assembly 5 also includes a cleaning cloth 505. The outer wall of the driving roller 504 is provided with the cleaning cloth 505. The cleaning cloth 505 is arranged in an inclined shape, and the lower surface of the bottom end of the cleaning cloth 505 is in contact with the surface of the reflector 404. The head and tail ends of the cleaning cloth 505 are bonded to each other by Velcro. The cleaning assembly 5 also includes a snap-fit ​​cover plate 506. The top surface of the protective housing 501 is snap-fitted with the snap-fit ​​cover plate 506.

[0034] The specific operation is as follows: each time the reflector 404 slides, the lower surface of the bottom end of the cleaning cloth 505 wipes the surface of the sliding reflector 404, so that when the reflector 404 adjusts the position for mapping the image, the redundant position can be wiped, so that the position can be kept clean and ready for image mapping after wiping, and after each sliding of the reflector 404, the driving motor 503 drives the driving roller 504 to rotate so that the cleaning cloth 505 can be driven, so that the position of the reflector 404 surface that has been wiped by the lower surface of the bottom end of the cleaning cloth 505 is replaced, so that the position of the cleaning cloth 505 that wipes the surface of the reflector 404 is different each time, so as to ensure that the position of the reflector 404 surface after wiping is clean;

[0035] Secondly, after all parts of the cleaning cloth 505 have been used, after the carriage stops moving, the snap cover 506 snap-connected to the protective shell 501 is manually disassembled, and the cleaning cloth 505 is exposed. The cleaning cloth 505 can be removed and replaced by tearing off the Velcro.

[0036] The ground integrated data center aligns the sleepers and fasteners in the standard disease-free images taken historically with the sleepers and fasteners in the images collected during the inspection process, thereby realizing pixel alignment of the historical images and the inspection images, and comparing the historical data, thereby realizing the function of simultaneous inspection and reporting of major diseases. The ground integrated data center is set up at the DCC of the vehicle depot or the location designated by the owner. It consists of servers, firewalls, switches, data storage modules, etc. By collecting the collected data of each inspection subsystem, data analysis, comparison, fault diagnosis, fault location, fault analysis, intelligent analysis, hidden danger analysis, etc. are carried out to realize offline diagnosis analysis of the operating status, health status trend analysis, and full life cycle statistical analysis of key components of subway engineering infrastructure.

[0037] In summary, when the non-contact line surface inspection device is used, first, the second line array camera 3 is located above the left and right rails, and the first line array camera 2 is located above the center line of the rail. When the undercar inspection beam 1 moves along the rail surface with the vehicle body, the first line array camera 2 and the second line array camera 3 collect images of the rail surface and transmit them to the ground integrated data center. The ground integrated data center performs non-contact inspection on the rail surface based on the collected images to detect whether there are defects on the rail surface. The first line array camera 2 and the second line array camera 3 are equipped with LED lights to eliminate the influence of ambient light.

[0038] When the first line array camera 2 and the second line array camera 3 collect images of the track surface, Figure 1 The shaded area shown in FIG. 1 is in a blind spot in the image acquisition operation. At this time, the blind spot of the track can be reflected by the reflector 404, and the mirror surface of the reflector 404 is within the detection range of the second linear array camera 3.

[0039] Only the part of the reflector 404 that overlaps with the mapping hole 403 is exposed for operation. The servo motor 405 is started regularly to drive the reciprocating screw 406 to rotate so that the mobile base 407 carries the reflector 404 to slide left and right inside the protective shell 402, so that different parts of the surface of the reflector 404 are exposed at the mapping hole 403, so that different parts of the surface of the reflector 404 are used for mapping the blind corner of the track;

[0040] Each time the reflector 404 slides, the lower surface of the bottom end of the cleaning cloth 505 wipes the surface of the sliding reflector 404, so that when the reflector 404 adjusts the position for mapping the image, the redundant portion can be wiped, so that the portion can remain clean after wiping and is ready to enter the image mapping operation. After each slide of the reflector 404, the driving motor 503 drives the driving roller 504 to rotate so that the cleaning cloth 505 can be transmitted, so that the portion of the reflector 404 surface that has been wiped by the lower surface of the bottom end of the cleaning cloth 505 is replaced.

[0041] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A non-contact line surface inspection device, comprising an under-vehicle inspection beam (1) and a blind spot mapping component (4), characterized in that: A first linear array camera (2) is arranged in the middle of the surface of the under-vehicle inspection beam (1), and second linear array cameras (3) are arranged on both sides of the surface of the under-vehicle inspection beam (1). The blind spot mapping component (4) is arranged at both ends of the under-vehicle inspection beam (1). The blind spot mapping component (4) comprises a fixing frame (401), a protective shell (402), a mapping hole (403) and a reflector (404). The bottom of the fixing frame (401) is fixed with the protective shell (402), and the middle of the side of the protective shell (402) is provided with a mapping hole (403), and the interior of the protective shell (402) is provided with a reflector (404).

2. The non-contact circuit surface inspection device according to claim 1, characterized in that: The mapping hole (403) is in a square structure, and faces the side of the rail. The size of the reflector (404) is larger than the inner diameter of the mapping hole (403).

3. The non-contact circuit surface inspection device according to claim 1, characterized in that: The blind spot mapping assembly (4) further comprises a servo motor (405), a reciprocating screw (406) and a movable base (407); the servo motor (405) is fixed to one side of the protective shell (402); the reciprocating screw (406) is connected to one side of the servo motor (405); and the movable base (407) is arranged on the outer wall of the reciprocating screw (406).

4. The non-contact circuit surface inspection device according to claim 3 is characterized in that: The side surface of the movable base (407) is fixed to the back surface of the reflector (404), and the reflector (404) is slidably connected to the protective shell (402) via the movable base (407).

5. The non-contact circuit surface inspection device according to claim 1, characterized in that: A cleaning assembly (5) is arranged on the side of the protective shell (402) on both sides of the mapping hole (403), and the cleaning assembly (5) comprises a protective shell (501) and a connecting hole (502), and a connecting hole (502) is opened at the bottom of the protective shell (501).

6. The non-contact circuit surface inspection device according to claim 5, characterized in that: The interior of the protective shell (501) is connected to the interior of the protection shell (402) via a connecting hole (502), and the connecting hole (502) is in a square structure.

7. The non-contact circuit surface inspection device according to claim 5, characterized in that: The cleaning component (5) further comprises a driving motor (503) and a driving roller (504); the driving motor (503) is fixed to the outer wall of the protective shell (501), and the output end of the driving motor (503) is connected to the driving roller (504) inside the protective shell (501).

8. The non-contact circuit surface inspection device according to claim 7, characterized in that: The cleaning assembly (5) further comprises a cleaning cloth (505), and the outer wall of the driving roller (504) is provided with the cleaning cloth (505).

9. The non-contact circuit surface inspection device according to claim 8, characterized in that: The cleaning cloth (505) is arranged in an inclined shape, and the lower surface of the bottom end of the cleaning cloth (505) is in contact with the surface of the reflector (404), and the head and tail ends of the cleaning cloth (505) are bonded to each other by Velcro.

10. The non-contact circuit surface inspection device according to claim 5, characterized in that: The cleaning assembly (5) further comprises a snap-fit ​​cover plate (506), and the top surface of the protective housing (501) is snap-fittedly connected to the snap-fit ​​cover plate (506).

Images