Railway train bolt anti-loosening mark detection device and method

Abstract

A device and method for detecting anti-loosening marks on railway train bolts. The present invention relates to the field of railway train detection technology. The present invention aims to solve the problem that the existing anti-loosening marks on railway train bolts are photographed with traditional cameras, and the imaging is difficult to identify, making it difficult to determine whether the bolts are loose. The detection device of the present invention includes a heating component, an imaging component, a control component and an industrial computer. The heating component and the imaging component are both vertically fixed upward in the middle of the track group. The heating component is arranged on the front side of the imaging component. The control component is fixed on the side of the track group in front of the heating component. The industrial computer is arranged on the outside of the track group. The control component, the heating component and the imaging component are electrically connected to the industrial computer respectively. The present invention is used for detecting anti-loosening marks on train bolts.

Description

Technical Field

[0001] The present invention relates to the technical field of railway train detection, and in particular to a device and method for detecting anti-loosening marks of railway train bolts. Background Art

[0002] All railway trains place high demands on the safety of their connecting bolts. Not only must the bolts themselves be secured against loosening and falling off, but they must also be marked with anti-loosening markings on the bolts and the connecting parts to facilitate inspection for looseness. A common method is to verify alignment of the anti-loosening markings on the connecting bolts on the train. However, dynamic inspections while the train is in motion present challenges in detecting these anti-loosening markings. First, the anti-loosening markings are thin, requiring high camera resolution. Second, some anti-loosening markings are colored, making them difficult to discern when the image is in grayscale.

[0003] What makes identification even more difficult is that the environment when railway trains are running is harsh and dusty, and the anti-loosening marks on the bolts are easily covered by dust, resulting in the anti-loosening marks not being visible in the picture.

[0004] Traditional cameras, including line scan cameras and area array cameras, face the problem of being unable to capture anti-loosening marks covered by dust. Summary of the Invention

[0005] In order to solve the problem that the existing railway train bolt anti-loosening marks are photographed with traditional cameras, the images are difficult to identify and it is difficult to determine whether the bolts are loose. The present invention further proposes a railway train bolt anti-loosening mark detection device and method.

[0006] The technical solution adopted by the present invention to solve the above technical problems is:

[0007] A railway train bolt anti-loosening mark detection device includes a heating component, an imaging component, a control component and an industrial control computer. The heating component and the imaging component are both vertically fixed upward to the middle of the track group. The heating component is arranged in front of the imaging component. The control component is fixed to the side of the track group in front of the heating component. The industrial control computer is arranged on the outside of the track group. The control component, heating component and imaging component are electrically connected to the industrial control computer respectively.

[0008] Furthermore, the heating assembly and the imaging assembly are both fixed in the protective shell, an imaging window is opened on the upper end surface of the protective shell, and the heating assembly and the imaging assembly are both arranged towards the imaging window.

[0009] Furthermore, the heating assembly includes a laser generator, a prism and a mounting frame, the mounting frame is fixed in the protective shell, the prism is arranged in front of the laser generator, and the laser generator and the prism are fixed on the mounting frame.

[0010] Furthermore, the imaging assembly includes a thermal imaging device, which is fixed to the mounting frame.

[0011] Furthermore, the control component includes a vehicle sensor and a sensor bracket, the vehicle sensor is fixed to the upper end of the sensor bracket, and the sensor bracket is fixed to one side of the track group.

[0012] Furthermore, the railway train bolt anti-loosening mark detection device also includes a protective mechanism, which includes a box body, a box cover and a driving mechanism. The upper end of the box body is open, the box cover is arranged on the outside of the open end of the box body, the protective shell is fixed in the box body, and the imaging window is arranged below the box cover. The box cover is translated between the open end of the box body and the outside of the open end through the driving mechanism, and the driving mechanism is electrically connected to the industrial control machine.

[0013] Furthermore, the driving mechanism includes a power assembly, a crank arm assembly, a rotating shaft and two rocker arm assemblies. The power assembly is fixed in the box body, the output end of the power assembly is rotatably connected to one side of one end of the crank arm assembly, the other end of the crank arm assembly is vertically fixed to the middle of the rotating shaft, the rotating shaft is horizontally rotatably connected in the box body, one end of the rocker arm assembly is connected to the end of the rotating shaft, and the other end of the rocker arm assembly is rotatably connected to the inner wall of the box cover.

[0014] Furthermore, the rocker arm assembly includes a rocker arm and a connecting rod, one end of the rocker arm is fixedly mounted on the outer side of the end of the rotating shaft, the other end of the rocker arm is rotatably connected to the rear side of the inner wall of the box cover, one end of the connecting rod is rotatably connected to the middle part of the rocker arm, and a slide groove is provided on the inner wall of the box cover in the front-to-back direction, the slide groove is provided on the front side of the other end of the rocker arm, a slider is provided in the slide groove, and the other end of the connecting rod is rotatably connected to the slider.

[0015] Furthermore, the power assembly includes a motor and a reduction gearbox, the motor is fixed in the box, the output shaft of the motor is connected to the input shaft of the reduction gearbox, and the output shaft of the reduction gearbox is connected to one side of one end of the crank arm assembly.

[0016] A method for detecting anti-loosening marks of railway train bolts comprises the following steps:

[0017] When a train travels on a track assembly, it first approaches the control assembly. The vehicle sensor in the control assembly detects the vehicle passing by and sends a signal to the industrial computer. The industrial computer controls the laser emitter in the heating assembly to start working. When the train passes the heating assembly, the laser emitted by the laser emitter is diffused by the prism and irradiated onto the target to be measured and its surrounding environment, causing the temperature of the anti-loosening mark and the bolt to rise. The marking glue used for the anti-loosening mark is different from the material and specific heat of the bolt, and a temperature difference is formed between the marking glue and the bolt after heating. At this time, the train passes through the imaging assembly, and the industrial computer controls the thermal imaging equipment to start taking pictures. Due to the different temperatures of the marking glue and the bolt, the thermal radiation photos generated by the thermal imaging equipment show the marking glue with clear contours, thereby realizing the identification of the anti-loosening mark.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a device and method for detecting anti-loosening marks on railway train bolts, utilizing the principle of thermal imaging to detect these marks. Because anti-loosening marks are often made of adhesive, which differs from the materials and heat dissipation coefficients of the bolts and connecting plates, a temperature difference occurs after a brief heating. Using a thermal imager to capture the inspection area creates a clear, contrasting thermal image, clearly capturing the outline of the adhesive. Based on this captured thermal image, it is possible to directly determine whether the bolt is loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a device for detecting anti-loosening marks of bolts on railway trains according to the present invention, wherein the direction of the arrow indicates the direction of travel of the train;

[0021] Figure 2 It is a schematic structural diagram of the heating component 1 of the present invention;

[0022] Figure 3 yes Figure 2 A top view of

[0023] Figure 4 It is a schematic diagram of the structure in which the imaging assembly 2 is installed in the protective housing 22 in the present invention;

[0024] Figure 5 is a top view of the protective housing 22 of the present invention;

[0025] Figure 6 1 is a schematic diagram of the structure of the control component 3 in the present invention;

[0026] Figure 7 It is a structural diagram of the protection mechanism 4 in the present invention;

[0027] Figure 8 yes Figure 7 Side view of

[0028] Figure 9 yes Figure 7 Top view of . DETAILED DESCRIPTION

[0029] Specific implementation method 1: Combination Figures 1 to 9Describing this embodiment, a railway train bolt anti-loosening mark detection device in this embodiment includes a heating component 1, an imaging component 2, a control component 3 and an industrial computer 5. The heating component 1 and the imaging component 2 are both vertically fixed upward in the middle of the track group, the heating component 1 is arranged on the front side of the imaging component 2, the control component 3 is fixed on the side of the track group in front of the heating component 1, the industrial computer 5 is arranged on the outside of the track group, and the control component 3, the heating component 1 and the imaging component 2 are electrically connected to the industrial computer 5 respectively.

[0030] The heating component 1 is used to heat the detection target and its surrounding environment, so that the temperature of the target object and the surrounding environment changes.

[0031] The control component 3 is installed in the direction of the incoming vehicle, before the heating component 1 receives the vehicle.

[0032] The industrial computer 5 receives the vehicle signal sent by the control component 3, controls the detection equipment to start working, and displays the generated and saved thermal radiation picture.

[0033] Specific implementation method 2: Combination Figures 1 to 9 In this embodiment, the heating assembly 1 and imaging assembly 2 are both fixedly mounted within a protective housing 22. An imaging window is defined on the upper surface of the protective housing 22, and both the heating assembly 1 and imaging assembly 2 are positioned facing the imaging window. The undisclosed technical features of this embodiment are the same as those of the first embodiment.

[0034] The protective shell 22 is used to protect the heating component 1 and the imaging component 2.

[0035] The heating component 1 is installed before the imaging component 2 is connected to the vehicle.

[0036] Specific implementation method three: Combination Figures 1 to 9 This embodiment describes the heating assembly 1, which includes a laser generator 11, a prism 12, and a mounting bracket 13. The mounting bracket 13 is fixedly mounted within a protective housing 22. The prism 12 is positioned directly in front of the laser generator 11. The laser generator 11 and the prism 12 are fixedly mounted on the mounting bracket 13. The undisclosed technical features of this embodiment are the same as those of the second embodiment.

[0037] The laser generator 11 is used to generate a laser spot, the prism 12 diffuses the spot into a required angle, and the mounting bracket 13 is used to fix the laser generator 11 and the prism 12 .

[0038] Specific implementation method four: Combination Figures 1 to 9 To illustrate this embodiment, the imaging assembly 2 includes a thermal imaging device 21, which is fixed to the mounting bracket 13. The undisclosed technical features of this embodiment are the same as those of the third embodiment.

[0039] The thermal imaging device 21 images the thermal radiation of the detection target and its surrounding environment to generate an infrared thermal radiation map.

[0040] Specific implementation method five: Combination Figures 1 to 9 In this embodiment, the control assembly 3 includes a vehicle sensor 31 and a sensor bracket 32. The vehicle sensor 31 is fixed to the upper end of the sensor bracket 32, and the sensor bracket 32 ​​is fixed to one side of the track assembly. The undisclosed technical features of this embodiment are the same as those of the first embodiment.

[0041] The vehicle sensor 31 is used to detect whether a train passes by and send a signal to start the detection equipment to work. The sensor bracket 32 ​​is used to fix the vehicle sensor 31 to the rail.

[0042] Specific implementation method six: combination Figures 1 to 9 This embodiment describes a railway train bolt anti-loosening mark detection device, further comprising a protective mechanism 4 comprising a housing 41, a housing cover 42, and a drive mechanism 43. The upper end of the housing 41 is open, and the housing cover 42 is disposed outside the open end of the housing 41. The protective housing 22 is fixedly attached to the housing 41, and the imaging window is disposed below the housing cover 42. The housing cover 42 is translated between the open end and the outside of the open end of the housing 41 by the drive mechanism 43. The drive mechanism 43 is electrically connected to the industrial computer 5. The undisclosed technical features of this embodiment are the same as those of the second, third, fourth, or fifth specific embodiments.

[0043] The protection mechanism 4 is used to protect the heating component 1 and the imaging component 2 and is installed on the route where the vehicle travels.

[0044] With this design, when the control component 3 detects that a vehicle is passing, the industrial computer 5 controls the driving mechanism 43 to rotate forward, and the box cover 42 moves horizontally to the outer side of the open end of the box body 41 to start operation; after obtaining the thermal radiation photo, the industrial computer 5 controls the driving mechanism 43 to reverse, and the box cover moves horizontally to the open end of the box body 41, covering the upper end of the box body 41 to protect the device inside the box body 41.

[0045] Specific implementation method seven: combination Figures 1 to 9 Describing this embodiment, the drive mechanism 43 includes a power assembly, a crank arm assembly 433, a rotating shaft 435, and two rocker assemblies 434. The power assembly is fixedly attached to the housing 41. The output end of the power assembly is rotatably connected to one side of one end of the crank arm assembly 433. The other end of the crank arm assembly 433 is vertically fixed to the middle of the rotating shaft 435. The rotating shaft 435 is rotatably connected to the housing 41. One end of the rocker assembly 434 is connected to the end of the rotating shaft 435, and the other end of the rocker assembly 434 is rotatably connected to the inner sidewall of the housing cover 42. The undisclosed technical features of this embodiment are the same as those of the sixth embodiment.

[0046] In this design, the power component pushes one end of the crank arm component 433, and the crank arm component 433 rotates around the rotating shaft 435. The rotation of the rotating shaft 435 drives one end of the rocker assembly 434 to rotate, and the other end of the rocker assembly 434 drives the box cover 42 to translate.

[0047] Specific implementation method eight: combination Figures 1 to 9 This embodiment describes a rocker assembly 434 comprising a rocker and a connecting rod. One end of the rocker is securely attached to the outside of the end of a rotating shaft 435. The other end of the rocker is pivotally connected to the rear side of the inner wall of the case cover 42. One end of the connecting rod is pivotally connected to the middle portion of the rocker. A slide groove is provided on the inner wall of the case cover 42 in the front-to-back direction. The slide groove is located forward of the other end of the rocker. A slider is positioned within the slide groove, and the other end of the connecting rod is pivotally connected to the slider. The undisclosed technical features of this embodiment are the same as those of the seventh embodiment.

[0048] This design forms a slider-connecting rod mechanism through the rocker assembly 434 to complete the translational movement of the box cover 42.

[0049] Specific implementation method nine: combination Figures 1 to 9 This embodiment describes a power assembly comprising a motor 431 and a reduction gearbox 432. Motor 431 is fixedly mounted within housing 41. The output shaft of motor 431 is connected to the input shaft of reduction gearbox 432. The output shaft of reduction gearbox 432 is connected to one side of one end of a crank arm assembly 433. Undisclosed technical features in this embodiment are the same as those in Embodiment 8.

[0050] A guide groove is provided on one side of one end of the crank arm assembly 433, and the output shaft of the reduction gear box 432 performs linear reciprocating motion in the horizontal direction. The output shaft of the reduction gear box 432 is inserted into the guide groove and is slidably connected to the guide groove. The output shaft of the reduction gear box 432 drives the crank arm assembly 433 to swing back and forth with the rotating shaft 435 as the rotation center.

[0051] Specific implementation method ten: Combination Figures 1 to 9 This embodiment describes a method for detecting anti-loosening marks on railway train bolts, including the following steps:

[0052] When a train travels on the track assembly, it first approaches the control component 3. The vehicle sensor 31 in the control component 3 detects the passing of the vehicle and sends a signal to the industrial computer 5. The industrial computer 5 controls the laser emitter 11 in the heating component 1 to start working. When the train passes the heating component 1, the laser emitted by the laser emitter 11 is diffused by the prism 12 and irradiated onto the target to be measured and its surrounding environment, causing the temperature of the anti-loosening mark and the bolt to rise. The marking glue used for the anti-loosening mark is different from the material and specific heat of the bolt, and a temperature difference is formed between the marking glue and the bolt after heating. At this time, the train passes through the imaging component 2, and the industrial computer 5 controls the thermal imaging device 21 to start taking pictures. Due to the different temperatures of the marking glue and the bolt, the thermal radiation photo generated by the thermal imaging device 21 shows a clear outline of the marking glue, thereby realizing the recognition of the anti-loosening mark.

[0053] When a train is running, it enters the working area of ​​the anti-loosening mark detection device and the detection device starts to work. Because the temperatures of the anti-loosening mark glue and the bolts are different at this time, the generated thermal radiation photo can clearly show the anti-loosening mark, so that the anti-loosening mark can be clearly identified.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A railway train bolt anti-loosening mark detection device, characterized by: It comprises a heating component (1), an imaging component (2), a control component (3) and an industrial control computer (5); the heating component (1) and the imaging component (2) are both fixedly connected vertically upward to the middle of the track group; the heating component (1) is arranged in front of the imaging component (2); the control component (3) is fixed to one side of the track group in front of the heating component (1); the industrial control computer (5) is arranged outside the track group; the control component (3), the heating component (1) and the imaging component (2) are respectively electrically connected to the industrial control computer (5); The control assembly (3) includes a vehicle sensor (31) and a sensor bracket (32), the vehicle sensor (31) is fixed to the upper end of the sensor bracket (32), and the sensor bracket (32) is fixed to one side of the track assembly; The heating assembly (1) includes a laser generator (11), a prism (12) and a mounting frame (13), wherein the mounting frame (13) is fixedly connected to the protective housing (22), the prism (12) is arranged in front of the laser generator (11), and the laser generator (11) and the prism (12) are fixedly connected to the mounting frame (13); The imaging assembly (2) comprises a thermal imaging device (21), and the thermal imaging device (21) is fixedly connected to the mounting frame (13).

2. A railway train bolt anti-loosening mark detection device according to claim 1, characterized in that: The heating component (1) and the imaging component (2) are both fixedly connected in the protective shell (22); an imaging window is provided on the upper end surface of the protective shell (22); and the heating component (1) and the imaging component (2) are both arranged toward the imaging window.

3. A railway train bolt anti-loosening mark detection device according to claim 1 or 2, characterized in that: The railway train bolt anti-loosening mark detection device further includes a protective mechanism (4), the protective mechanism (4) including a box body (41), a box cover (42) and a driving mechanism (43), the upper end of the box body (41) is open, the box cover (42) is arranged outside the open end of the box body (41), the protective shell (22) is fixed inside the box body (41), the imaging window is arranged below the box cover (42), the box cover (42) is translated between the open end of the box body (41) and the outside of the open end by the driving mechanism (43), and the driving mechanism (43) is electrically connected to the industrial control computer (5).

4. A railway train bolt anti-loosening mark detection device according to claim 3, characterized in that: The driving mechanism (43) includes a power assembly, a crank arm assembly (433), a rotating shaft (435), and two rocker assemblies (434). The power assembly is fixedly connected in the box body (41). The output end of the power assembly is rotatably connected to one side of one end of the crank arm assembly (433). The other end of the crank arm assembly (433) is vertically fixed to the middle of the rotating shaft (435). The rotating shaft (435) is horizontally rotatably connected in the box body (41). One end of the rocker assembly (434) is connected to the end of the rotating shaft (435), and the other end of the rocker assembly (434) is rotatably connected to the inner wall of the box cover (42).

5. A railway train bolt anti-loosening mark detection device according to claim 4, characterized in that: The rocker assembly (434) includes a rocker and a connecting rod, one end of the rocker is fixedly connected to the outside of the end of the rotating shaft (435), the other end of the rocker is rotatably connected to the rear side of the inner wall of the box cover (42), one end of the connecting rod is rotatably connected to the middle part of the rocker, a slide groove is provided on the inner wall of the box cover (42) along the front-to-back direction, the slide groove is provided on the front side of the other end of the rocker, a slider is provided in the slide groove, and the other end of the connecting rod is rotatably connected to the slider.

6. The railway train bolt anti-loosening mark detection device according to claim 5, characterized in that: The power assembly includes a motor (431) and a reduction gearbox (432). The motor (431) is fixedly connected to the housing (41). The output shaft of the motor (431) is connected to the input shaft of the reduction gearbox (432). The output shaft of the reduction gearbox (432) is connected to one side of one end of the crank arm assembly (433).

7. A detection method for detecting a railway train bolt anti-loosening mark according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: When a train is traveling on the track group, it first approaches the control component (3). The vehicle sensor (31) in the control component (3) detects the vehicle passing by and sends a signal to the industrial control computer (5). The industrial control computer (5) controls the laser emitter (11) in the heating component (1) to start working. When the train passes through the heating component (1), the laser emitted by the laser emitter (11) is diffused by the prism (12) and irradiated onto the target to be measured and its surrounding environment, causing the temperature of the anti-loosening mark and the bolt to rise. The marking glue used in the anti-loosening mark is different from the material and specific heat of the bolt, and a temperature difference is formed between the marking glue and the bolt after heating. At this time, the train passes through the imaging component (2), and the industrial control computer (5) controls the thermal imaging device (21) to start taking pictures. Due to the different temperatures of the marking glue and the bolt, the thermal radiation photo generated by the thermal imaging device (21) shows a clear outline of the marking glue, thereby realizing the recognition of the anti-loosening mark.

Images