Ballastless track bottom defect detection device

Abstract

The utility model discloses a ballastless track bottom defect detection device which comprises a frame body structure which is formed by splicing or integrally forming a plurality of sectional materials. The walking assemblies are arranged at the four corners of the bottom of the mounting frame, and the walking assemblies are arranged on a rail; a detection mechanism; the detection mechanism is composed of a driving assembly and a detection piece installed on the driving assembly. The driving assembly is a component moving in the X-axis direction, the Y-axis direction and the Z-axis direction, the detection piece is installed on the component moving in the Z-axis direction in the driving assembly, and the detection piece is located at the bottom of the installation frame; when the device provided by the utility model is used for detection, the device automatically bypasses the sleeper through the plurality of linear servo sliding tables, ingeniously avoids the blocking of the sleeper, and accurately feeds the detection piece into the bottom area of the ballastless track, so that the efficiency and the accuracy of the detection of the bottom area of the ballastless track are greatly improved, and the detection accuracy of the ballastless track is greatly improved. And the manual intervention and the cost in the detection process are also obviously reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rail defect detection, and particularly relates to a bottom defect detection device for ballastless track. BACKGROUND

[0002] Ballastless track, also known as ballastless track, is a track structure that uses concrete, asphalt mixture and other integral foundations to replace the granular ballast bed. In order to ensure the operation of the track, it is necessary to detect the defects of the track, and the rail defect detection is a key technical task, which focuses on identifying, measuring and analyzing various defects or damages that may exist on the railway track. These defects may include but are not limited to cracks, wear, breakage, deformation, corrosion, and deviation of track geometry, etc. Rail defect detection is a comprehensive and detailed inspection of railway track through visual inspection, ultrasonic detection, magnetic powder detection, eddy current detection, laser scanning, infrared thermal imaging and automated detection system based on machine vision, aiming to discover potential problems on the track in time and ensure the safety and smoothness of railway traffic.

[0003] At present, in the defect detection work of ballastless track, the detection device of the prior art mainly focuses on the two sides and the top of the track which are easy to observe and contact, and the widely used ultrasonic detection also has a detection blind area, which can only detect the track surface, track waist and track bottom below the track waist, and cannot realize comprehensive detection. Moreover, ultrasonic detection needs to be used with coupling agent, which greatly increases the detection difficulty and cost. At present, the track bottom area mainly relies on traditional manual visual detection to make up for the deficiency of machine detection due to the influence of its structure, space limitation and the obstruction of the track tie. The traditional manual visual detection is to stretch a mirror into the track bottom by an experienced track inspector, and observe whether there is damage, crack and other conditions in the track bottom through mirror reflection. Through manual detection, a track inspector can detect 100 meters of track bottom defects per hour, but due to the possible omissions of manual detection, the detection rate cannot be guaranteed, and the detection can only be carried out during the day. SUMMARY

[0004] The purpose of the present application is to provide a bottom defect detection device for ballastless track to solve the problems of the prior art detection device that cannot detect the bottom area of the ballastless track, low efficiency and low detection rate of manual detection, and inability to detect at night.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A bottom defect detection device for ballastless track, comprising a frame structure, which is composed of a plurality of section bars spliced or integrally formed into a frame structure; a walking assembly arranged at the bottom corners of the frame, which is arranged on the track; a detection mechanism; the detection mechanism is composed of a driving assembly and a detection piece mounted on the driving assembly; the driving assembly is a component capable of moving along the X-axis, Y-axis and Z-axis directions, the detection piece is mounted on the component moving along the Z-axis direction in the driving assembly, the detection piece is arranged inside the frame and is moved to the bottom of the track by the driving assembly, so that the flaw detection of the bottom of the track is realized; when encountering a sleeper, the driving assembly can directly cross the sleeper by retracting along the X-axis direction first, then lifting along the Z-axis direction and finally descending along the Z-axis direction; when moving to the bottom area of another section of track, the detection piece is extended again to realize the detection of the bottom surface of the track.

[0006] As a preferred technical scheme in the present application, the driving assembly comprises a linear servo sliding table one mounted inside the frame along the Y-axis, a linear servo sliding table two slidingly mounted on the linear servo sliding table one and reciprocally moving along the Y-axis direction by the driving of the linear servo sliding table one, a linear servo sliding table three reciprocally moving along the X-axis direction by the driving of the linear servo sliding table two and mounted on the linear servo sliding table two, and the detection piece is mounted on the linear servo sliding table three and reciprocally lifts and lowers along the Z-axis direction by the linear servo sliding table three; before detection, the line-scan camera is inside the frame; when moving to the detection area of the track, the linear servo sliding table one drives the linear servo sliding table two to adjust the position along the Y-axis direction, the linear servo sliding table two drives the linear servo sliding table three to adjust the position along the X-axis direction, at this time, the line-scan camera is outside the detection area of the track; at this time, the line-scan camera is extended into the bottom area of the track by the driving of the linear servo sliding table three, so that the movement of the detection assembly in space is realized to meet the detection requirement of the bottom surface of the track.

[0007] As a preferred technical scheme in the present application, the inner side of the frame is further provided with a mounting bracket, and the two ends of the linear servo sliding table one are mounted in the mounting bracket, so that the linear servo sliding table one is mounted, and the whole driving assembly is mounted.

[0008] As one preferred technical scheme in the present application, the middle position of the outer surface of the frame body is further provided with a mounting plate, the side of the mounting plate facing the inside of the frame body is provided with a servo motor, and the side of the mounting plate facing the outside of the frame body is provided with a driving gear and a driven gear, the driving gear is mounted on the output end of the servo motor, the driven gear is rotatably mounted on the mounting plate through a shaft, the driving gear is in meshing transmission with the driven gear, the rotation of the servo motor drives the driving gear, and then the driving gear drives the driven gear to rotate, the driving gear and the driven gear are both fixedly provided with mounting rods, and photoelectric modules are mounted on the mounting rods, the photoelectric modules are not shown in the figure, and in the walking of the detection device, the photoelectric modules scan the bottom area of the sleeper to avoid obstacles in the bottom area of the sleeper from affecting the subsequent detection and prompting the staff, and when obstacles are crossed, the mounting rods can be gradually unfolded to a horizontal shape in the direction facing the obstacles to avoid the obstacles in the advancing direction.

[0009] As one preferred technical scheme in the present application, the mounting rod, the driving gear and the driven gear are all located in the inner side area of the rail.

[0010] As one preferred technical scheme in the present application, the walking assembly comprises a driving motor mounted at the bottom of the frame body and a walking wheel mounted on the output end of the driving motor, the walking wheel is in rolling connection with the rail, so as to realize the automatic walking of the whole device on the rail.

[0011] As one preferred technical scheme in the present application, the frame body is further provided with a deviation correction sensor at both ends of the outer side of the frame body, and the deviation correction sensor is arranged close to the walking wheel.

[0012] As one preferred technical scheme in the present application, the detection member is a line-scan camera with a supplementary light source to realize night work, and position sensors are further mounted on both sides of the line-scan camera to avoid the collision between the line-scan camera and the sleeper.

[0013] As one preferred technical scheme in the present application, a front camera is further mounted on the frame body through a support.

[0014] As one preferred technical scheme in the present application, the frame body is composed of a bottom frame and a mounting frame, the driving assembly is fixedly arranged in the mounting frame, a mounting seat is arranged in the bottom frame and the mounting frame, a lock catch is arranged outside the bottom frame and the mounting frame, a box body is further arranged at the top of the mounting frame, and a front camera is further arranged on the mounting frame through a support.

[0015] As one preferred technical scheme in the present application, the frame body is a mounting frame in an integrated structure.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] In the detection by the device of the application, the device greatly saves the process, is easy to use, and makes up for the limitation that the ultrasonic detection equipment cannot detect the rail bottom area. Compared with the traditional manual detection, the device greatly saves the labor cost, can detect double tracks at the same time, and can detect 5000 double tracks per hour The device not only greatly improves the efficiency and accuracy of the detection of the rail bottom area, but also significantly reduces the manual intervention and cost in the detection process, and changes the status that the detection of the rail bottom area can only rely on the traditional manual detection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic diagram of the running state of the device on the rail;

[0019] Figure 2 FIG. 4 is a structural schematic diagram of the device;

[0020] Figure 3 FIG. 5 is a bottom view of the device;

[0021] Figure 4 FIG. 6 is a rear view of the device on the rail;

[0022] Figure 5 FIG. 7 is an enlarged schematic diagram of area A of the device; Figure 4

[0023] In the drawings:

[0024] 101, mounting frame; 102, mounting bracket; 103, linear servo sliding table one; 104, linear servo sliding table two; 105, linear servo sliding table three; 106, line scanning camera; 107, driving motor; 108, walking wheel; 109, deviation correction sensor; 110, mounting rod; 111, mounting plate; 112, servo motor; 113, driving gear; 114, driven gear; 115, mounting seat; 116, position sensor; 117, lock catch; 118, front camera;

[0025] 200, rail. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0027] Embodiment 1

[0028] Please refer to Figures 1 to 5 The application provides a technical scheme: a ballastless track bottom defect detection device, comprising

[0029] The frame structure is composed of a plurality of profiles spliced or integrally formed into a frame structure.

[0030] The walking assembly is arranged at the bottom corners of the frame body, and the walking assembly is arranged on the track 200.

[0031] The detection mechanism is composed of a driving assembly and a detection piece mounted on the driving assembly.

[0032] The driving assembly is a component that moves along the X-axis, Y-axis and Z-axis directions, the detection piece is mounted on the component that moves along the Z-axis direction in the driving assembly, the detection piece is located inside the frame body, and moves to the bottom position of the track 200 through the driving assembly, so as to realize the flaw detection of the bottom position of the track 200. When encountering a sleeper, the driving assembly can directly cross the sleeper by first retracting along the X-axis direction, then lifting along the Z-axis direction, and finally descending along the Z-axis direction. When moving to the bottom area of another track 200, the detection piece is extended again to realize the detection of the bottom surface of the track 200.

[0033] In this embodiment, the driving assembly includes a linear servo sliding table one 103 mounted inside the frame body along the Y-axis, a linear servo sliding table two 104 slidingly mounted on the linear servo sliding table one 103 and reciprocally moving along the Y-axis direction through the driving of the linear servo sliding table one 103, and a linear servo sliding table three 105 mounted on the linear servo sliding table two 104 and reciprocally moving along the X-axis direction through the driving of the linear servo sliding table two 104. The detection piece is mounted on the linear servo sliding table three 105 and reciprocally rises and falls along the Z-axis direction through the linear servo sliding table three 105. Before detection, the line-scan camera 106 is inside the frame body. When moving to the detection area of the track 200, the linear servo sliding table one 103 drives the linear servo sliding table two 104 to adjust the position of the Y-axis direction, and the linear servo sliding table two 104 drives the linear servo sliding table three 105 to adjust the position of the X-axis direction. At this time, the line-scan camera 106 is located outside the detection area of the track 200. At this time, the line-scan camera 106 is driven by the linear servo sliding table three 105 to extend into the bottom area of the track 200, so as to realize the movement of the detection assembly in space to meet the detection requirement of the bottom surface of the track 200.

[0034] In this embodiment, the inner side surface of the frame body is also provided with a mounting bracket 102, and the two ends of the linear servo sliding table one 103 are mounted in the mounting bracket 102, so as to realize the mounting of the linear servo sliding table one 103 and the mounting of the entire driving assembly.

[0035] In the embodiment, a mounting plate 111 is also mounted at the middle position of the outer surface of the frame body, a servo motor 112 is mounted on the side of the mounting plate 111 facing the inside of the frame body, a driving gear 113 and a driven gear 114 are arranged on the side of the mounting plate 111 facing the outside of the frame body, the driving gear 113 is mounted on the output end of the servo motor 112, the driven gear 114 is rotatably mounted on the mounting plate 111 through a shaft, the driving gear 113 is in transmission with the driven gear 114, the rotation of the servo motor 112 drives the driving gear 113, and then the driving gear 113 drives the driven gear 114 to rotate, the mounting rod 110 is fixedly arranged on the driving gear 113 and the driven gear 114, the mounting rod 110 is in a horizontal state in the non-working state, the photoelectric module is mounted on the mounting rod 110, the photoelectric module is not shown in the figure, in the walking of the detection device, the servo motor 112 drives the driving gear 113 and the driven gear 114 to change the mounting rod 110 into a vertical state, the photoelectric module scans the bottom area of the sleeper to avoid the existence of obstacles in the bottom area of the sleeper to affect the subsequent detection, at the same time, the line-scan camera 106 retreats to the inside of the frame body, when the front camera 118 detects that there is an obstacle in front, the mounting rod 110 gradually expands to a horizontal state towards the direction of 100, so as to realize the obstacle avoidance in the advancing direction, and after the completion of the whole detection work, the mounting rod 110 is also rotated to a horizontal state under the driving of the driving gear 113 and the driven gear 114.

[0036] In the embodiment, the mounting rod 110, the driving gear 113 and the driven gear 114 are all arranged in the inner side area of the rail 200.

[0037] In the embodiment, the walking assembly comprises a driving motor 107 mounted at the bottom of the frame body and a walking wheel 108 mounted on the output end of the driving motor 107, the walking wheel 108 is in rolling connection with the rail 200, so as to realize the automatic walking of the whole device on the rail 200.

[0038] In the embodiment, deviation correction sensors 109 are also mounted at the two ends of the outside of the frame body, and the deviation correction sensors 109 are arranged close to the walking wheels 108.

[0039] In the embodiment, the detection member is a line-scan camera with a supplementary light source to realize night work, position sensors 116 are also mounted on the two sides of the line-scan camera 106 to avoid the collision between the line-scan camera 106 and the sleeper.

[0040] In the embodiment, the frame body is further provided with a front camera 118 mounted through a support, which can detect obstacles on the walking path of the device, the front camera 118 is located at the same side of the mounting rod 110, when the front camera 118 detects that there is an obstacle in front, the line scanning camera 106 will also move to the inside of the frame body to avoid damage caused by collision with the obstacle.

[0041] In the embodiment, the frame body is composed of a bottom frame and a mounting frame 101, the driving assembly is fixedly arranged in the mounting frame 101, a mounting seat 115 is arranged in the bottom frame and the mounting frame 101, a lock catch 117 is arranged outside the bottom frame and the mounting frame 101, a box body is further arranged on the top of the mounting frame 101, and a front camera 118 is further arranged on the mounting frame 101 through a support; it is worth noting that the detection assembly in the embodiment is designed in a sinking mode, which can reduce the stroke in the Z-axis direction, and the detection assembly can also be integrated in the box body, so as to realize modular assembly.

[0042] Embodiment 2

[0043] The difference between the embodiment and the embodiment 1 is that, in the embodiment, the frame body is an integrated mounting frame 101.

[0044] Although the embodiments of the present application have been shown and described (see the detailed description above), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for detecting defects in the bottom of a ballastless track, characterized in that: Comprising The frame structure is composed of a plurality of profiles spliced or integrally formed into a frame structure; The walking assembly is placed at the bottom of the four corners of the frame, and the walking assembly is placed on the rail (200); The detection mechanism is composed of a driving assembly and a detection piece installed on the driving assembly; The driving assembly is a component that moves along the X-axis, Y-axis and Z-axis directions, the detection piece is installed on the component that moves along the Z-axis direction in the driving assembly, and the detection piece is located inside the frame and moves to the bottom of the rail (200) through the driving assembly.

2. The device for detecting defects in the bottom of a ballastless track according to claim 1, characterized in that: The driving assembly includes a linear servo sliding table one (103) installed inside the frame along the Y-axis, a linear servo sliding table two (104) slidingly installed on the linear servo sliding table one (103) and reciprocally moving along the Y-axis direction through the driving of the linear servo sliding table one (103), and a linear servo sliding table three (105) installed on the linear servo sliding table two (104) and reciprocally moving along the X-axis direction through the driving of the linear servo sliding table two (104), and the detection piece is installed on the linear servo sliding table three (105) and reciprocally lifts and lowers along the Z-axis direction through the linear servo sliding table three (105).

3. The device for detecting defects in the bottom of a ballastless track according to claim 2, characterized in that: The inner side of the frame is also provided with a mounting bracket (102), and the two ends of the linear servo sliding table one (103) are installed in the mounting bracket (102).

4. The device for detecting defects in the bottom of a ballastless track according to claim 1, characterized in that: The middle position of the outer surface of the frame is also provided with a mounting plate (111), the side of the mounting plate (111) facing the inside of the frame is provided with a servo motor (112), and the side of the mounting plate (111) facing the outside of the frame is provided with a driving gear (113) and a driven gear (114), wherein the driving gear (113) is installed on the output end of the servo motor (112), and the driven gear (114) is rotatably installed on the mounting plate (111) through a shaft, the driving gear (113) and the driven gear (114) are in meshing transmission, and the driving gear (113) and the driven gear (114) are both provided with a mounting rod (110), and an optical module is installed on the mounting rod (110).

5. The device for detecting defects in the bottom of a ballastless track according to claim 4, characterized in that: The mounting rod (110), the driving gear (113) and the driven gear (114) are all located in the inner side area of the rail (200).

6. The device for detecting defects in the bottom of a ballastless track according to claim 1, characterized in that: The walking assembly includes a driving motor (107) installed at the bottom of the frame, and a walking wheel (108) installed on the output end of the driving motor (107), and the walking wheel (108) is in rolling connection with the rail (200).

7. The device for detecting defects in the bottom of a ballastless track according to claim 6, characterized in that: The outer sides of the frame are also provided with a deviation correction sensor (109) arranged near the walking wheel (108).

8. The device for detecting defects in the bottom of a ballastless track according to claim 1, characterized in that: The detection piece is a line-scan camera (106) with a supplementary light source, and position sensors (116) are also installed on both sides of the line-scan camera (106).

9. The device for detecting defects in the bottom of a ballastless track according to claim 1, characterized in that: The frame is composed of a bottom frame and a mounting frame (101), the driving assembly is fixed in the mounting frame (101), wherein a mounting seat (115) is mounted in the bottom frame and the mounting frame (101), a lock buckle (117) is mounted outside the bottom frame and the mounting frame (101), a box body is further mounted on the top of the mounting frame (101), and a front camera (118) is further mounted on the mounting frame (101) through a support.

10. The device for detecting defects in the bottom of a ballastless track according to claim 1, characterized in that: The frame is an integrated mounting frame (101).

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