Rotary rack and steel rail profile fixed-point detection device

Abstract

The utility model discloses a rotary rack and steel rail profile fixed-point detection device, which belongs to the technical field of track detection equipment and comprises a support frame assembly and a connecting assembly. One end of the connecting assembly is in sliding fit with the supporting frame assembly, and the other end is fixedly connected with the detection camera; the supporting frame assembly is erected on a steel rail head, drives the detection camera to move above the steel rail head through the sliding connection assembly, and collects profile data of the left half side and the right half side of the steel rail head. The rotary rack drives the detection camera to shoot the profiles of the two half sides of the steel rail head through the sliding fit effect of the connecting assembly and the supporting frame assembly, is simple in structure, low in cost, high in detection efficiency and complete and reliable in data, and improves the overall stability and measurement precision through the arc sliding grooves symmetrically formed in the two sides. The detection result is accurate and effective.

Description

Technical Field

[0001] This utility model relates to the field of track inspection equipment technology, specifically a rotary frame and a rail profile fixed-point inspection device. Background Technology

[0002] Rails are the main component of railway tracks. They directly bear the pressure, impact, and friction generated by train operation and transmit these forces to the underlying structure, such as sleepers and the ballast, ensuring the safe, smooth, and high-speed operation of trains. During long-term operation, rails are subjected to continuous friction and impact from wheels and rails. Combined with factors such as differences in rail material, terrain limitations during track laying, and the standardization of routine maintenance procedures, abnormal contact relationships can easily form on the wheel-rail contact surfaces and subsurfaces. This leads to various defects such as rail wear, surface damage, and cracks. If these defects are not detected and addressed promptly, they will seriously threaten the safety of rail transit operations. Therefore, precise, point-to-point inspection of rail profiles, complete data collection, and assessment of rail service status have become core aspects of routine maintenance for rail transit lines.

[0003] In existing technologies, the main methods for point-to-point inspection of rail profiles are manual inspection and line laser camera inspection. Both methods have significant technical shortcomings and are difficult to meet the industry's needs for efficient, accurate, and comprehensive inspection. Early inspection methods involved manual inspection. After identifying suspected defects in the rails during on-site inspections, inspectors used traditional tools such as rail geometry measuring rulers to manually measure the geometric parameters of key parts such as the rail head and web. The measurement results were then compared with standard parameters to determine the rail's service condition. This inspection method relies entirely on manual operation, resulting in extremely low efficiency, making it unsuitable for the large-scale, high-efficiency operation and maintenance needs of rail transit lines. Furthermore, the operation process is cumbersome, requiring high levels of professional skills from inspectors, and is susceptible to human error affecting the results. Simultaneously, manual measurement can only obtain limited geometric parameters of the rail, failing to comprehensively collect overall rail profile data, resulting in insufficient comprehensiveness of the inspection results and an inability to accurately reflect the actual defect status of the rail. To address the inefficiency of manual inspection, existing technologies have developed rail profile point-to-point inspection schemes based on line laser cameras. This scheme uses a line laser camera mounted on one side of the rail to capture images of defect locations, thus collecting rail profile data. Compared to manual inspection, this method improves efficiency and reduces human error. However, the problem of incomplete rail profile data detection persists. While using line laser cameras on both sides provides more comprehensive data, it significantly complicates the overall structure, increases manufacturing costs, and makes on-site setup and debugging more cumbersome, reducing the ease of operation for point-to-point inspection.

[0004] In summary, existing rail profile fixed-point inspection technologies have consistently failed to simultaneously address the comprehensiveness of inspection data, the simplicity of the inspection device structure, ease of operation, and cost-effectiveness of inspection. The industry urgently needs a technical solution that can achieve complete inspection of both sides of the rail profile through a simple structure, while being easy to operate and cost-controllable, in order to solve the many shortcomings of existing technologies and meet the demand for efficient and accurate fixed-point inspection of rails. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings by providing a rotary frame and rail profile fixed-point detection device. This device enables switching of the measurement position of a single detection camera, ensuring complete coverage of the rail area. This not only improves detection efficiency but also enhances the integrity and reliability of measurement data. The device is simple in structure, easy to operate, and reduces costs. To achieve the above objectives, this utility model provides the following technical solution:

[0006] A rotary frame includes a support frame assembly and a connecting assembly; one end of the connecting assembly is slidably engaged with the support frame assembly, and the other end is fixedly connected to a detection camera; the support frame assembly is mounted on the rail head, and the detection camera is moved above the rail head by the sliding connecting assembly to collect the profile data of the left and right halves of the rail head.

[0007] Furthermore, the support frame assembly includes a first support plate, a second support plate, and connecting rods; both the first and second support plates have notches at their bottoms that are adapted to the rail head, and the two are fixedly connected by two connecting rods located on both sides of the notches, so that the notches are symmetrically arranged.

[0008] Furthermore, both the first support plate and the second support plate are provided with arc-shaped grooves, and the two arc-shaped grooves are respectively located on the outer side walls of the first support plate and the second support plate opposite to each other.

[0009] Furthermore, the connecting assembly includes a first connecting plate and a second connecting plate arranged symmetrically; the lower part of the first connecting plate is provided with a pulley that cooperates with the arc-shaped groove of the first support plate, and the lower part of the second connecting plate is provided with a pulley that cooperates with the arc-shaped groove of the second support plate; the upper ends of the first connecting plate and the second connecting plate are respectively fixedly connected to the corresponding sides of the detection camera.

[0010] Furthermore, both the first connecting plate and the second connecting plate are provided with shims to reduce friction; the shims are located between the first connecting plate and the first support plate, and between the second connecting plate and the second support plate.

[0011] Furthermore, the first connecting plate is provided with a locking mechanism; the locking mechanism includes a locking rod, a guide assembly, and a drive rod; a guide assembly is provided on the inner sidewall of the first connecting plate opposite to the second connecting plate; a movable locking rod is inserted into the guide assembly; a locking groove corresponding to the locking rod is provided on the top of the first support plate; a drive rod is provided on the side of the locking rod facing the first connecting plate; the drive rod passes through the first connecting plate; and an elongated hole arranged vertically is provided on the first connecting plate at the position corresponding to the drive rod.

[0012] Furthermore, the guiding assembly includes multiple guide blocks; each guide block has a guide hole, and the projections of all guide holes on the horizontal plane overlap; a movable locking rod is provided within each guide hole.

[0013] Furthermore, the first connecting plate is provided with a fixing block; the fixing block is located above the guide assembly; the bottom of the fixing block is provided with a magnetic element; the top of the locking rod is provided with an attractive element that cooperates with the magnetic element.

[0014] Furthermore, the second connecting plate is provided with a position triggering component; the position triggering component includes two proximity switches; proximity switches are respectively provided on both sides of the inner wall of the second connecting plate opposite to the first connecting plate; the sensing ends of the two proximity switches are opposite to each other and inclined downward; trigger protrusions are respectively provided at the positions of the two ends of the arc-shaped slide groove on the top of the second connecting plate; the trigger protrusions are matched with the proximity switches one by one.

[0015] A rail profile positioning detection device includes a detection camera, a rotary frame, a clamping structure, and a telescopic leveling rod. The detection camera, clamping structure, and telescopic rod are fixedly connected to the rotary frame. The clamping structure is used to clamp the rail head and, in cooperation with the rotary frame, mounts the detection camera above the rail head. The telescopic leveling rod is used to level the top plane of the rail when the detection camera is mounted on the rail head.

[0016] The beneficial effects of this utility model are:

[0017] This utility model discloses a rotary frame and a rail profile positioning detection device, including a support frame assembly and a connecting assembly. One end of the connecting assembly is slidably engaged with the support frame assembly, and the other end is fixedly connected to a detection camera. The support frame assembly is mounted on the rail head. Through the sliding connecting assembly, the detection camera is moved above the rail head to collect data on the left and right halves of the rail head profile. This utility model's rotary frame, through the sliding engagement of the connecting assembly and the support frame assembly, drives the detection camera to capture images of both halves of the rail head profile. It features a simple structure, low cost, high detection efficiency, and complete and reliable data. Furthermore, the symmetrical arrangement of arc-shaped grooves on both sides enhances overall stability and measurement accuracy, ensuring accurate and effective detection results. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the rotary frame of this utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the first support plate in this utility model;

[0020] Figure 3 This is a three-dimensional structural schematic diagram of the first support plate from another perspective in this utility model;

[0021] Figure 4 This is a three-dimensional structural schematic diagram of the second support plate in this utility model;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of the first connecting plate in this utility model;

[0023] Figure 6 This is a three-dimensional structural schematic diagram of the second connecting plate in this utility model;

[0024] Figure 7 This is a three-dimensional structural schematic diagram of the rail profile fixed-point detection device of this utility model, omitting the telescopic leveling rod;

[0025] Figure 8 This is a three-dimensional structural diagram of the rail profile fixed-point detection device of this utility model installed on the rail;

[0026] Figure 9 This is a three-dimensional structural diagram of the connection between the connecting rod and the telescopic leveling rod of this utility model;

[0027] In the attached diagram: 1-First support plate, 2-Second support plate, 3-Connecting rod, 4-Notch, 5-Arc-shaped groove, 6-First connecting plate, 7-Second connecting plate, 8-Pulley, 9-Elevating block, 10-Locking rod, 11-Drive rod, 12-Locking groove, 13-Elongated hole, 14-Guide block, 15-Locking block, 16-Fixing block, 17-Proximity switch, 18-Trigger protrusion, 19-Detection camera, 20-Clamping structure, 21-Telescopic leveling rod, 22-Lock, 23-Rail. Detailed Implementation

[0028] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0029] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0030] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0031] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. The meaning of such spatial relative terms includes different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0032] Example 1

[0033] See attached Figures 1-6This utility model discloses a rotary frame, mainly used to support the detection camera 19 and move it above the rail head of the rail 23, ensuring that its imaging range covers the entire rail head of the rail 23, thus achieving complete acquisition of the rail head profile data. The frame includes a support frame assembly and a connecting assembly. The support frame assembly serves as the basic support component of the rotary frame, used to mount the camera on the rail head of the rail 23, providing a stable installation reference for the entire device. One end of the connecting assembly slides into the support frame assembly, while the other end is fixedly connected to the detection camera 19. When the support frame assembly is mounted on the rail head of the rail 23, sliding the connecting assembly on the support frame assembly allows the detection camera 19 to move above the rail head of the rail 23, switching positions to acquire the profile data of the rail head of the rail 23. This rotary frame of the utility model enables the switching of the measurement position of a single detection camera 19, with the imaging range completely covering the rail 23 area, improving not only detection efficiency but also the integrity and reliability of the measurement data. It has a simple structure, is easy to operate, and reduces costs.

[0034] Specifically, the support frame assembly includes a first support plate 1, a second support plate 2, and two connecting rods 3. The first support plate 1 and the second support plate 2 are symmetrically arranged, and each has a notch 4 at its bottom that matches the rail head of the rail 23. The outline of the notch 4 fits the top and side outlines of the rail head of the rail 23, ensuring that the support frame assembly can be stably erected on the rail head of the rail 23. The first support plate 1 and the second support plate 2 are fixedly connected by two connecting rods 3, which are respectively located on both sides of the notch 4. The two ends of the connecting rods 3 are fixedly connected to the first support plate 1 and the second support plate 2, respectively, so that the two notches 4 are symmetrically arranged, providing a stable support foundation. To enable the sliding of the connecting components, both the first support plate 1 and the second support plate 2 are provided with arc-shaped sliding grooves 5. The two arc-shaped sliding grooves 5 are located on the opposite outer walls of the first support plate 1 and the second support plate 2 and are symmetrically arranged. The length of the arc-shaped sliding grooves 5 can be set according to the size of the rail head of the rail 23. This ensures that when the detection camera 19 slides to both ends of the arc-shaped sliding grooves 5 with the connecting components, the detection camera 19 can collect the profile data of the left and right halves of the rail head of the rail 23 respectively, thus ensuring the integrity of the collected profile data.

[0035] Specifically, the connecting components include a first connecting plate 6 and a second connecting plate 7 arranged symmetrically. One end of the first connecting plate 6 and the second connecting plate 7 are fixedly connected to both sides of the detection camera 19, respectively. The lower part of the first connecting plate 6 is provided with a pulley 8, which cooperates with the arc-shaped groove 5 on the first support plate 1, allowing the first connecting plate 6 to slide along the corresponding arc-shaped groove 5. The lower part of the second connecting plate 7 is also provided with a pulley 8, which cooperates with the arc-shaped groove 5 on the second support plate 2, allowing the second connecting plate 7 to slide along the corresponding arc-shaped groove 5. The number of pulleys 8 on the first connecting plate 6 and the second connecting plate 7 is set according to actual conditions to ensure sliding stability and continuity, as shown in the attached figure. Figure 2 and attached Figure 4As shown, two pulleys 8 can be respectively installed on the first connecting plate 6 and the second connecting plate 7. The first connecting plate 6 and the second connecting plate 7 can slide synchronously along the arc-shaped slide groove 5, driving the detection camera 19 to move along the arc-shaped slide groove 5. This can prevent the detection camera 19 from loosening or shifting during movement, ensuring that the detection camera 19 always maintains a stable posture, thereby ensuring the accuracy of profile data acquisition. In addition, a shim 9 is provided between the first connecting plate 6 and the first support plate 1, and the shim 9 is fixed on the first connecting plate 6. Similarly, a shim 9 is provided between the second connecting plate 7 and the second support plate 2, and the shim 9 is fixed on the second connecting plate 7. The shim 9 is used to reduce the friction between the first connecting plate 6 and the first support plate 1, and to reduce the friction between the second connecting plate 7 and the second support plate 2. In order to ensure that the detection camera 19 remains stable during installation, a locking mechanism is provided on the first connecting plate 6. The locking mechanism includes a locking rod 10, a guide assembly, and a drive rod 11, which is used to fix the connecting assembly and the support frame assembly. The guide assembly is disposed on the inner sidewalls of the first connecting plate 6 and the second connecting plate 7 opposite to each other. The guide assembly includes multiple guide blocks 14, each of which is fixedly connected to the first connecting plate 6 and is arranged vertically. Each guide block 14 has a guide hole, and all guide holes are arranged coaxially to ensure coaxiality and provide precise guidance for the movement of the locking rod 10. The locking rod 10 is movably inserted into the guide hole, and the diameter of the locking rod 10 is adapted to the inner diameter of the guide hole to ensure that the locking rod 10 can slide flexibly along the guide hole. The top of the first support plate 1 is provided with a locking groove 12 corresponding to the locking rod 10. A locking block 15 with a size adapted to the locking groove 12 can be set at the bottom of the locking rod 10. When the locking rod 10 moves along the guide hole and inserts into the locking groove 12, the stability and reliability of the locking rod 10 after insertion into the locking groove 12 are ensured, realizing the locking of the connecting component and the first support plate 1, thereby fixing the detection camera 19 relatively. This not only facilitates the installation of the entire device on the rail head of the rail 23, but also ensures the stability of the detection camera 19 during installation. When it is necessary to move the detection camera 19 for data acquisition, simply pull the locking rod 10 out of the locking groove 12 to release the lock, which is convenient to operate. A drive rod 11 is provided on the side of the locking rod 10 facing the first connecting plate 6. The end of the drive rod 11 away from the locking rod 10 passes through the first connecting plate 6 and extends to the outside of the first connecting plate 6, which is convenient for the operator to manually operate the drive rod 11, thereby driving the locking rod 10 to move. The first connecting plate 6 has an elongated hole 13 at the position corresponding to the drive rod 11. The elongated hole 13 is arranged vertically and is consistent with the moving direction of the locking rod 10. The drive rod 11 can move along the elongated hole 13, providing space for the movement of the drive rod 11. At the same time, the elongated hole 13 can guide the movement of the drive rod 11, ensuring that the locking rod 10 can be accurately inserted into the locking groove 12.To ensure the locking mechanism secures the locking rod 10 during unlocking, a fixing block 16 is provided on the first connecting plate 6. The fixing block 16 is located above the guide assembly and corresponds to the position of the locking rod 10. A magnetic element is located at the bottom of the fixing block 16, and an attractive element that cooperates with the magnetic element is located at the top of the locking rod 10. The magnetic element and the attractive element use opposite magnetic poles, and the attraction is only generated when the distance between the locking rod 10 and the fixing block 16 is small. When it is necessary to unlock the connecting assembly from the first support plate 1, the operator manually operates the drive rod 11, which moves the locking rod 10 upwards until the locking rod 10 is attracted to the fixing block 16.

[0036] Specifically, in order to achieve the fixed-point triggering acquisition of the detection camera 19 and ensure that the detection camera 19 can completely acquire the left half profile and right half profile data of the rail head of the rail 23, a position triggering component is provided on the second connecting plate 7. The position triggering component includes two proximity switches 17. The two proximity switches 17 are respectively located on the inner sidewalls of the second connecting plate 7 and the first connecting plate 6, and the sensing ends of the two proximity switches 17 are opposite to each other and tilted downwards. The top of the second support plate 2 is provided with trigger protrusions 18 at the positions corresponding to the two ends of the arc-shaped slide groove 5. The trigger protrusions 18 and the proximity switches 17 are matched one-to-one. The trigger protrusions 18 are made of rigid material and are integrally formed with the second support plate 2, with a solid structure. When the connecting component slides along the arc-shaped groove 5, moving the detection camera 19 to the preset detection position on one side of the rail head of the rail 23, the corresponding trigger protrusion 18 will trigger the proximity switch 17. The proximity switch 17 will send an electrical signal to the detection camera 19, controlling the detection camera 19 to automatically complete the profile data acquisition at that position. When the connecting component moves the detection camera 19 to the preset detection position on the other side of the rail head of the rail 23, another trigger protrusion 18 will trigger the corresponding proximity switch 17, again controlling the detection camera 19 to complete the data acquisition, realizing the automated fixed-point acquisition of the detection camera 19, improving detection efficiency and the accuracy of data acquisition.

[0037] Example 2

[0038] See attached Figures 7-9The present invention discloses a rail profile fixed-point detection device, including a detection camera 19, a rotating frame as described in Embodiment 1, a clamping structure 20, and a telescopic leveling rod 21. The four components work together to complete the fixed-point detection of the rail head profile of the rail 23. The detection camera 19 is fixedly connected to the first connecting plate 6 and the second connecting plate 7 on both sides, with the lens of the detection camera 19 facing the rail head of the rail 23. The detection camera 19 is a line laser camera. The clamping structure 20 is installed between the first support plate 1 and the second support plate 2, and its bottom is fixedly connected to two connecting rods 3, which are used to clamp the rail head of the rail 23 to ensure the stability of the slewing frame when it is installed on the rail head of the rail 23. The telescopic leveling rod 21 is quickly and detachably connected to the connecting rod 3 of the slewing frame through the locking buckle 22. The length of the telescopic leveling rod 21 is adjustable. When the device is installed on the rail head of the rail 23 to be detected, the length of the telescopic leveling rod 21 is adjusted so that the other end of the telescopic leveling rod 21 rests on another rail head of the rail 23. The other rail head of the rail 23 is used as a reference surface to level the top plane of the rail. This ensures that the data obtained by the detection camera 19 when collecting the profile of the rail head of the rail 23 multiple times is within the error range, further improving the detection accuracy.

[0039] The working process of the rail profile fixed-point detection device of this utility model:

[0040] First, the support frame assembly of the rotary frame is mounted on the rail head of rail 23, so that the notches 4 at the bottom of the first support plate 1 and the second support plate 2 are in contact with the rail head of rail 23. The length of the telescopic leveling rod 21 is adjusted so that the other end of the telescopic leveling rod 21 rests on another rail head of rail 23. Using the other rail head of rail 23 as a reference surface, the top plane of the rail is leveled. Then, the rail head of rail 23 is clamped and fixed to the rail head of rail 23 through the clamping structure 20 to ensure the stability of the device. Afterward, the operator manually pushes the drive rod 11 upward, causing the locking rod 10 to disengage from the locking groove 12, so that the top of the drive rod 11 is attracted to the fixing block 16, releasing the lock between the connecting assembly and the support frame assembly, and pushing the detection camera 19 to slide along the arc-shaped slide groove 5. When the camera 19 moves to the trigger protrusion 18 on one side of the rail head of the rail 23, the corresponding trigger protrusion 18 on the second support plate 2 triggers the proximity switch 17. The proximity switch 17 sends an electrical signal to control the detection camera 19 to complete the acquisition of half of the profile data. After the acquisition is completed, the detection camera 19 is pushed to slide in the opposite direction. When the detection camera 19 moves to the trigger protrusion 18 on the other side, the other trigger protrusion 18 triggers the corresponding proximity switch 17, and the detection camera 19 completes the acquisition of the other half of the profile data. After the acquisition is completed, the detection camera 19 is pushed to slide along the arc-shaped slide groove 5 so that the locking rod 10 is aligned with the locking groove 12. The drive rod 11 is pushed down to drive the locking rod 10 into the locking groove 12, thereby locking the connecting component and completing one fixed-point detection.

[0041] The device of this utility model achieves the following beneficial effects: It adopts a sliding structure combining an arc-shaped groove and a pulley, driving the detection camera to move along the rail head contour line. Only a single detection camera is needed to complete the capture of the left and right half profile data of the rail. The structure is simple, the operation is convenient, and the device cost is effectively reduced. The symmetrical arrangement of the arc-shaped grooves on both sides improves the overall stability and measurement accuracy, ensuring accurate and effective detection results. The setting of the position trigger component enables automated fixed-point acquisition by the detection camera, improving detection efficiency while ensuring the consistency of data acquisition position.

[0042] All technical features in this embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

[0043] The above embodiments are preferred implementations of this utility model. In addition, other implementations are also included. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A rotary frame, characterized in that: It includes a support frame assembly and a connecting assembly; one end of the connecting assembly is slidably engaged with the support frame assembly, and the other end is used to be fixedly connected to the detection camera (19); the support frame assembly is mounted on the rail head of the rail (23), and the sliding connecting assembly drives the detection camera (19) to move above the rail head of the rail (23) to collect the profile data of the left and right sides of the rail head of the rail (23).

2. A rotary frame according to claim 1, characterized in that: The support frame assembly includes a first support plate (1), a second support plate (2), and a connecting rod (3); the bottom of the first support plate (1) and the second support plate (2) are both provided with notches (4) that are adapted to the rail head of the rail (23), and the two are fixedly connected by two connecting rods (3) respectively located on both sides of the notches (4), so that the notches (4) are symmetrically arranged.

3. A rotary frame according to claim 2, characterized in that: Both the first support plate (1) and the second support plate (2) are provided with arc-shaped grooves (5), and the two arc-shaped grooves (5) are located on the outer side walls of the first support plate (1) and the second support plate (2) respectively.

4. A rotary frame according to claim 3, characterized in that: The connecting assembly includes a first connecting plate (6) and a second connecting plate (7) arranged symmetrically; the lower part of the first connecting plate (6) is provided with a pulley (8) that cooperates with the arc-shaped groove (5) of the first support plate (1), and the lower part of the second connecting plate (7) is provided with a pulley (8) that cooperates with the arc-shaped groove (5) of the second support plate (2); the upper ends of the first connecting plate (6) and the second connecting plate (7) are respectively fixedly connected to the corresponding sides of the detection camera (19).

5. A rotary frame according to claim 4, characterized in that: The first connecting plate (6) and the second connecting plate (7) are each provided with a shim (9) for reducing friction; the shim (9) is located between the first connecting plate (6) and the first support plate (1), and between the second connecting plate (7) and the second support plate (2).

6. A rotary frame according to claim 4, characterized in that: The first connecting plate (6) is provided with a locking mechanism; the locking mechanism includes a locking rod (10), a guide assembly and a drive rod (11); the inner sidewall of the first connecting plate (6) opposite to the second connecting plate (7) is provided with a guide assembly; a movable locking rod (10) is inserted into the guide assembly; the top of the first support plate (1) is provided with a locking groove (12) corresponding to the locking rod (10); the locking rod (10) is provided with a drive rod (11) on the side facing the first connecting plate (6); the drive rod (11) passes through the first connecting plate (6); the first connecting plate (6) is provided with an elongated hole (13) arranged in the vertical direction at the position corresponding to the drive rod (11).

7. A rotary frame according to claim 6, characterized in that: The guide assembly includes multiple guide blocks (14); the guide blocks (14) are provided with guide holes, and the projections of all the guide holes on the horizontal plane overlap; a movable locking rod (10) is provided in the guide hole.

8. A rotary frame according to claim 6, characterized in that: The first connecting plate (6) is provided with a fixing block (16); the fixing block (16) is located above the guide assembly; the bottom of the fixing block (16) is provided with a magnetic component; the top of the locking rod (10) is provided with an attraction component that cooperates with the magnetic component.

9. A rotary frame according to any one of claims 4 to 8, characterized in that: The second connecting plate (7) is provided with a position triggering component; the position triggering component includes two proximity switches (17); the inner sidewalls of the second connecting plate (7) opposite to the first connecting plate (6) are respectively provided with proximity switches (17); the sensing ends of the two proximity switches (17) are opposite to each other and inclined downward; the top of the second connecting plate (7) is provided with trigger protrusions (18) at the positions corresponding to the two ends of the arc-shaped slide groove (5); the trigger protrusions (18) and the proximity switches (17) are respectively matched one-to-one.

10. A rail profile fixed-point detection device, characterized in that: The device includes a detection camera (19), a rotary frame as described in any one of claims 1 to 9, a clamping structure (20), and a telescopic leveling rod (21); the detection camera (19), the clamping structure (20), and the telescopic rod are respectively fixedly connected to the rotary frame; the clamping structure (20) is used to clamp the rail head of the rail (23), and cooperates with the rotary frame to mount the detection camera (19) above the rail head of the rail (23); the telescopic leveling rod (21) is used to level the top plane of the rail when the detection camera (19) is mounted on the rail head of the rail (23).

Images