Bogie detection device

Abstract

A bogie detection device, including a work area to be detected, the work area to be detected is equipped with two rail bars for carrying bogie, detection groove is equipped between two rail bars, first camera assembly is equipped in the detection groove, the first camera assembly can move in the detection groove along the length direction of the rail bar, to collect the bottom image of the bogie, the work area to be detected on both sides of the detection groove is also equipped with support, second camera assembly is equipped on the support, the second camera assembly can move on the support along the length direction of the rail bar, to collect the side image of the bogie, the utility model has the advantages of more comprehensive realization of automatic detection to bogie.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment, and in particular to a bogie testing device. Background Technology

[0002] With the rapid development of the rail transit industry, diverse modes of transportation such as subways and high-speed trains have gradually become an indispensable part of people's daily lives. As the core moving unit of a train, the bogie bears key functions such as suspension, motion guidance, power traction, and braking. Its quality is directly related to the operational safety of rail transit and the protection of passengers' lives and property. Therefore, comprehensive and accurate quality inspection during the bogie completion stage is particularly important. However, traditional bogie inspection methods mostly rely on manual operation, which is not only inefficient but also prone to missed or false inspections due to human negligence. In recent years, with the advancement of information technology, robots and automated equipment have gradually replaced manual inspection, achieving efficient inspection through sensors and data management systems. For example, patent number CN105136488B proposes a test device and method for inspecting bogies of maglev trains. Through weighing sensors, a laser-sensing gap measurement system, and a vertical pressurization device on a gantry, it realizes the overall weighing of the bogie, the measurement of the motor air gap, and the determination of the suspension load-bearing capacity. However, this technology primarily targets inspection items for specific functions and does not address image-based defect detection, such as whether springs or pins are missing, whether screws are tightened, or whether brake shoes have scratches or damage. Furthermore, existing inspection schemes based on fixed-point cameras have several limitations. Due to the large size of the bogie, the wide distribution of inspection points, and potential deviations in parking positions, fixed-point cameras often struggle to fully cover all inspection areas, resulting in limited shooting positions and affecting the completeness and accuracy of the inspection.

[0003] In practical applications, bogie inspection faces other challenges. For example, the complex structural design necessitates photographing certain inspection areas from different angles, but existing equipment typically lacks flexible angle adjustment capabilities, failing to meet multi-dimensional inspection requirements. Furthermore, insufficient or uneven lighting conditions can easily generate shadows during imaging, further affecting image quality and reducing inspection accuracy. Therefore, developing an inspection device that can adapt to the complex structure of bogies, support flexible multi-angle adjustment, and eliminate shadow interference has become an urgent technical challenge. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a bogie testing device that can efficiently and more comprehensively automate the testing of bogies.

[0005] The technical problem solved by this utility model is achieved through the following technical solution:

[0006] A bogie inspection device includes an inspection area with two rails for mounting the bogie and an inspection groove between them. A first camera assembly is installed in the inspection groove and can move along the length of the rails within the groove to capture a bottom image of the bogie. Supports are also provided on both sides of the inspection area, and second camera assemblies are installed on the supports. The second camera assemblies can move along the length of the rails on the supports to capture a side image of the bogie.

[0007] Furthermore, both the detection slot and the support are equipped with robotic arms. The first camera assembly and the second camera assembly are respectively mounted on the end joints of the robotic arms. The robotic arms are capable of multi-degree-of-freedom movement to drive the corresponding camera assembly to any detection point. The first camera assembly and the second camera assembly each include a main camera and two small cameras. The two small cameras are located on both sides of the main camera. The small cameras can slide to move closer to or away from the main camera, and the small cameras can rotate to adjust the shooting angle of the small cameras.

[0008] Furthermore, the specific structure of the camera assembly includes a camera assembly fixing plate, a main camera, a small camera translation adjustment plate, a small camera transition block, a small camera roll adjustment plate, a small camera pitch adjustment plate, a small camera support rod, a small camera base plate, and a small camera pitch pin. The camera assembly fixing plate is mounted on the end joint of the robotic arm, serving as the base of the camera assembly. The main camera is fixed in the center of the camera assembly fixing plate and is used for the main shooting task. Two small camera translation adjustment plates are located on each side and connected to the small camera transition block, allowing adjustment of their relative positions to achieve smooth transition between the small camera and the main camera. The camera has two-stage adjustable spacing L1 and L2; the small camera transition block is fixed together with the small camera roll adjustment plate, and the translation adjustment of the small camera is achieved by adjusting its relative position with the small camera translation adjustment plate; the small camera roll adjustment plate is connected to the small camera pitch adjustment plate, and the roll angle a1 of the small camera is adjusted by rotation; the small camera pitch adjustment plate cooperates with the small camera support rod and the small camera pitch pin to achieve the pitch angle a2 adjustment of the small camera; the small camera base plate fixes the small camera and is connected to the small camera pitch adjustment plate through the small camera support rod and the small camera pitch pin.

[0009] Specifically, the multi-degree-of-freedom robotic arm, through its flexible movement capabilities, can quickly move the camera assembly to any detection point, thereby eliminating the influence of bogie docking deviation. The camera angle adjustment mechanism adjusts the roll angle a1 and pitch angle a2 of the small camera through the small camera roll adjustment plate and the small camera pitch adjustment plate, respectively, to ensure the optimal shooting angle. The fill light layout is installed at both ends of the support through fill light brackets to provide a uniform light source and eliminate shadow interference during the shooting process.

[0010] Furthermore, the design of the multi-stage translation adjustment mechanism realizes the adjustment of the distance between the small camera and the main camera through a two-stage adjustment method. The first-stage adjustment is achieved by changing the relative position of the small camera transition block and the small camera translation adjustment plate to adjust the distance L1; the second-stage adjustment is achieved by changing the relative position of the small camera translation adjustment plate and the camera assembly fixing plate to adjust the distance L2. This multi-stage adjustment method significantly increases the translation adjustment range of the camera assembly, enabling it to adapt to different detection requirements.

[0011] Specifically, the design of the small camera angle adjustment mechanism achieves multi-dimensional angle adjustment of the small camera through a roll angle adjustment mechanism and a pitch angle adjustment mechanism. The roll angle adjustment mechanism adjusts the roll angle a1 of the small camera by rotating the angle between the roll adjustment plate and the pitch adjustment plate of the small camera. The pitch angle adjustment mechanism adjusts the relative position of the small camera support rod in the slot of the pitch adjustment plate of the small camera, thereby changing the angle between the small camera base plate and the pitch adjustment plate of the small camera, thus adjusting the pitch angle a2 of the small camera. This angle adjustment mechanism improves the flexibility of on-site camera setup and adapts to different testing needs.

[0012] The advantages and positive effects of this invention are as follows: The multi-degree-of-freedom robotic arm and multi-stage translation adjustment mechanism ensure precise alignment of the camera with the inspection points, eliminating the impact of bogie docking deviations. The small camera's angle adjustment mechanism improves the flexibility of on-site setup and adapts to different inspection needs. Multiple supplementary lighting ensures shadow-free shooting, improving image quality. The automated inspection scheme significantly improves bogie inspection efficiency and reduces manual intervention. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of one side of the support in this utility model;

[0015] Figure 3 This is a schematic diagram of the camera assembly in this utility model;

[0016] Figure 4 This is a schematic diagram of the angle adjustment mechanism in this utility model.

[0017] Auxiliary markings: I. Fill light; II. Robotic arm; VI. First camera assembly; III. Second camera assembly; IV. Bogie; 101. Fill light bracket; 102. Support; 201. Robotic arm end joint; 300. Main camera; 301. Camera assembly mounting plate; 302. Small camera translation adjustment plate; 303. Small camera transition block; 304. Small camera roll adjustment plate; 305. Small camera pitch adjustment plate; 306. Small camera strut; 307. Small camera base plate; 308. Small camera pitch pin; 309. Small camera; 4. Rail; 5. Detection slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0022] Due to the complex structural design, certain inspection areas require imaging from different angles. However, existing equipment typically lacks flexible angle adjustment capabilities, failing to meet multi-dimensional inspection needs. Furthermore, in insufficient or uneven lighting conditions, shadows easily form during imaging, further affecting image quality and reducing inspection accuracy. Therefore, developing an inspection device that can adapt to the complex structure of the bogie, support flexible multi-angle adjustment, and eliminate shadow interference has become an urgent technical challenge. This invention addresses this bogie inspection device. Figure 1 As shown, the bogie IV is mounted on an inspection area with two rails 4 for mounting the bogie IV. A detection groove 5 is located between the two rails 4, and a first camera assembly VI is installed in the detection groove 5. The first camera assembly VI can move along the length of the rails 4 within the detection groove 5 to capture the bottom image of the bogie IV. Supports 102 are also provided on both sides of the inspection area of ​​the detection groove 5, and second camera assemblies III are installed on the supports 102. The second camera assembly III can move along the length of the rails 4 on the supports 102 to capture the side image of the bogie IV. This layout can automatically cover multiple key parts of the bogie IV without the need for manual operation of the camera to take pictures of different parts, which greatly improves the comprehensiveness and automation of the inspection and avoids the missed inspections that are easy to occur in manual inspection.

[0023] Furthermore, the movable design of the first camera assembly VI and the second camera assembly III effectively overcomes the problem of potential deviations in the docking position of the bogie IV. Regardless of the difference between the actual docking position of the bogie IV in the inspection area and the preset position, the camera assembly can move along the track 4 to the appropriate position for shooting, ensuring that the camera can always accurately align with the bottom and sides of the bogie IV for image acquisition. This guarantees the accuracy and stability of the inspection and avoids situations where some inspection areas cannot be photographed or the shooting effect is poor due to docking deviations. Whether the bogie IV is large or small, the camera assembly can find a suitable shooting position by moving along the track 4 to acquire clear and complete bottom and side images. This enhances the versatility and adaptability of the inspection device and reduces the cost for enterprises to replace inspection equipment due to changes in the bogie IV model.

[0024] Specifically, such as Figure 2As shown, the bogie IV side image acquisition structure consists of a supplementary light I, a robotic arm II, a second camera assembly III, a supplementary light bracket 101, a support 102, and a robotic arm end joint 201. The supplementary light bracket 101 is installed at both ends of the support 102 to fix the supplementary light I. The robotic arm II is connected to the support 102 through its bottom. The second camera assembly III is installed on the robotic arm end joint 201 to perform multi-angle shooting and detection of the bogie IV. The purpose of the entire device is to ensure accurate coverage of all detection points on the side of the bogie through the multi-degree-of-freedom motion capability of the robotic arm and the angle adjustment function of the camera assembly, and to eliminate shadow interference during the shooting process through the supplementary light layout.

[0025] like Figure 1 As shown, the first camera assembly VI and the second camera assembly III have the same structure and are both connected to the robotic arm II. When the first camera assembly VI acquires the image of the bottom of the bogie IV, it is illuminated by the supplementary light I on the support 102, which can improve the brightness of the dark environment at the bottom and improve the clarity of the bottom image.

[0026] Specifically, the structures of the first camera component VI and the second camera component III are shown in the attached figure. Figure 3 As shown, it consists of a main camera 300, a camera assembly fixing plate 301, a small camera translation adjustment plate 302, a small camera transition block 303, a small camera roll adjustment plate 304, a small camera pitch adjustment plate 305, a small camera support rod 306, a small camera base plate 307, a small camera pitch pin 308, and two small cameras 309. The camera assembly fixing plate 301 serves as the base of the entire camera assembly and is directly mounted on the end joint 201 of the robotic arm, providing stable support for the main camera 300 and the small cameras on both sides. The main camera 300 is located in the center of the camera assembly fixing plate 301 and is responsible for the main shooting task; while the small cameras on both sides achieve flexible position adjustment and angle change through a series of adjustment mechanisms.

[0027] Small camera translation adjustment plates 302 are respectively installed on both sides of the camera assembly fixing plate 301. Each small camera translation adjustment plate 302 is connected to a small camera transition block 303, which is further fixed to the small camera roll adjustment plate 304. This structural design allows the small camera to be adjusted in two levels in the horizontal direction: the first level of adjustment is achieved by changing the relative position between the small camera transition block 303 and the small camera translation adjustment plate 302, thereby adjusting the distance L1 between the small camera and the main camera; the second level of adjustment is achieved by adjusting the relative position between the small camera translation adjustment plate 302 and the camera assembly fixing plate 301, thereby adjusting the distance L2 between the small camera and the main camera. This two-level adjustment mechanism significantly increases the translation adjustment range of the camera assembly, enabling it to adapt to the testing requirements of bogies of different sizes and shapes.

[0028] The design of the small camera roll adjustment plate 304 provides the small camera with the function of adjusting the roll angle a1. By rotating the angle between the small camera roll adjustment plate 304 and the small camera pitch adjustment plate 305, the roll angle of the small camera can be precisely adjusted. In addition, the small camera pitch adjustment plate 305 is connected to the small camera base plate 307 through the small camera support rod 306 and the small camera pitch pin 308, forming a small camera pitch adjustment mechanism. When it is necessary to adjust the small camera pitch angle a2, it is only necessary to adjust the relative position of the small camera support rod 306 in the slot of the small camera pitch adjustment plate 305, which will drive the angle between the small camera base plate 307 and the small camera pitch adjustment plate 305 to change, thereby completing the adjustment of the pitch angle. This independent adjustment mechanism of roll angle and pitch angle enhances the flexibility of on-site camera adjustment and ensures precise control of the shooting angle.

[0029] Combined with appendix Figure 4 As shown, the details of the small camera tilt adjustment mechanism are further revealed. The small camera base plate 307 is connected to the small camera tilt adjustment plate 305 through the small camera support rod 306 and the small camera tilt pin 308. In actual operation, technicians can adjust the position of the small camera support rod 306 in the slot by loosening or tightening the small camera tilt pin 308, thereby achieving fine adjustment of the small camera tilt angle a2. This design not only improves the convenience of adjustment, but also ensures the stability of the angle adjustment and avoids angle deviation caused by external forces.

[0030] In practical applications, the robotic arm II, through its flexible joint design, can quickly move the camera assembly III to any detection point. For example, when the bogie IV is docked on the detection platform, due to manufacturing errors or assembly deviations, the actual docking position of the bogie may deviate from the preset position. At this time, the robotic arm II, through its multi-degree-of-freedom motion capability, can adjust the position of the camera assembly III in real time to ensure that the main camera 300 and the small camera 309 can accurately align with the target detection point. The motion control of the robotic arm II is completed by an external control system. Technicians can input the coordinates of the target point according to the actual detection requirements, and the robotic arm II will automatically complete the position adjustment and lock stably.

[0031] This invention has a wide range of applications, especially in the quality inspection of bogies in the rail transit industry. For example, on the production line of subway trains or high-speed trains, after the bogies are assembled, they need to undergo comprehensive quality inspection to ensure the normal operation of their suspension devices, motion guidance, power traction, and braking functions. Traditional inspection methods usually rely on manual visual inspection or fixed-point camera photography, but these methods often suffer from low efficiency, limited coverage, and susceptibility to ambient light. This invention, through the design of a multi-degree-of-freedom robotic arm, a multi-stage translation adjustment mechanism, an angle adjustment mechanism, and multi-point supplementary lighting, achieves efficient, accurate, and automated inspection of the bogie assembly stage, significantly improving inspection efficiency and accuracy.

[0032] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. A bogie testing device, characterized in that: The system includes an inspection area with two rails (4) for mounting a bogie (IV). A detection groove (5) is provided between the two rails (4). A first camera assembly (VI) is provided in the detection groove (5). The first camera assembly (VI) can move along the length of the rails (4) within the detection groove (5) to capture the bottom image of the bogie (IV). Supports (102) are also provided on both sides of the inspection area of ​​the detection groove (5). A second camera assembly (III) is provided on the support (102). The second camera assembly (III) can move along the length of the rails (4) on the support (102) to capture the side image of the bogie (IV).

2. The bogie testing device according to claim 1, characterized in that: Both the detection slot (5) and the support (102) are equipped with robotic arms (II). The first camera assembly (VI) and the second camera assembly (III) are respectively installed on the end joint (201) of the robotic arm. The first camera assembly (VI) and the second camera assembly (III) each include a main camera (300) and two small cameras (309). The two small cameras (309) are located on both sides of the main camera (300). The small cameras (309) can slide to get closer to or away from the main camera (300), and the small cameras (309) can rotate to adjust the shooting angle of the small cameras (309).

3. The bogie testing device according to claim 2, characterized in that: Both ends of the support (102) are provided with supplementary light brackets (101), and supplementary lights (I) are connected to the end of the supplementary light brackets (101), with the supplementary lights (I) facing the bogie (IV).

4. The bogie testing device according to claim 2, characterized in that: The first camera assembly (VI) and the second camera assembly (III) each include a camera assembly fixing plate (301) and a small camera base plate (307). The main camera (300) is fixed in the center of the camera assembly fixing plate (301), and the two small cameras (309) are respectively connected to the two sides of the main camera (300) through the small camera base plate (307).

5. The bogie testing device according to claim 4, characterized in that: The first camera assembly (VI) and the second camera assembly (III) each include a small camera translation adjustment plate (302) and a small camera transition block (303). The small camera (309) is connected to the small camera transition block (303). The small camera transition block (303) is slidably connected to the small camera translation adjustment plate (302). The distance L1 between the small camera (309) and the main camera (300) can be adjusted by adjusting the relative position of the small camera transition block (303) and the small camera translation adjustment plate (302).

6. The bogie testing device according to claim 5, characterized in that: The small camera translation adjustment plate (302) is slidably connected to the camera assembly fixing plate (301). The distance L2 between the small camera (309) and the main camera (300) can be adjusted by adjusting the relative position of the small camera translation adjustment plate (302) and the camera assembly fixing plate (301).

7. A bogie testing device according to claim 5 or 6, characterized in that: The first camera assembly (VI) and the second camera assembly (III) both include a small camera roll adjustment plate (304) and a small camera pitch adjustment plate (305). The small camera transition block (303) is connected to the small camera roll adjustment plate (304), the small camera (309) is connected to the small camera roll adjustment plate (304), and the small camera roll adjustment plate (304) and the small camera pitch adjustment plate (305) are rotatably connected. The roll angle a1 of the small camera (309) is adjusted by rotating the small camera pitch adjustment plate (305).

8. The bogie testing device according to claim 7, characterized in that: The first camera assembly (VI) and the second camera assembly (III) also include a small camera support rod (306) and a small camera pitch pin (308). The end of the small camera (309) is rotatably connected to the small camera pitch adjustment plate (305) through the small camera pitch pin (308), and the bottom of the small camera (309) is rotatably connected to one end of the small camera support rod (306). The other end of the small camera support rod (306) is movably connected to the small camera pitch adjustment plate (305). The pitch angle a2 of the small camera (309) can be adjusted by adjusting the position of the small camera support rod (306) in the slot.

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