Measuring instrument for railway combination profile abrasion

Abstract

The utility model discloses a measuring instrument for railway combination profile abrasion, which is characterized in that a support frame is arranged on a walking vehicle, and a line-scan digital camera is connected with the support frame; the walking vehicle drives the linear array camera to move along the track; the supporting frame comprises a mounting seat, a supporting arm, a stabilizing arm, a connecting arm, an extending arm and a damper; the mounting seat is connected with the walking vehicle; one end of the damper is hinged to the middle of the mounting seat, the other end of the damper is hinged to one end of the stabilizing arm, the other end of the stabilizing arm is hinged to the front side of the mounting seat, and the damper, the stabilizing arm and the mounting seat form a first triangular structure; one end of the supporting arm is hinged to the rear side of the mounting seat, and the other end of the supporting arm is hinged to one end of the connecting arm; the supporting arm, the connecting arm, the first triangular structure and the mounting seat form a second triangular structure; the extension arm is fixedly connected with the supporting arm, and the line-scan digital camera is connected to the extension arm. By means of the design, the functions of absorbing vibration energy through the damper and stabilizing the displacement of the arm constraint structure are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of track inspection technology, specifically a measuring instrument for the combined profile wear of railways. Background Technology

[0002] As a vital national infrastructure and public welfare project, the safe operation of railways directly impacts transportation efficiency and the safety of public life and property. Tracks, as the core load-bearing component of the railway system, are subjected to long-term train loads, environmental corrosion, and alternating stress, making them prone to tread wear, railhead wear, cracks, and other defects. Failure to promptly inspect and maintain these defects can lead to major accidents such as derailments and rail breaks. With the development of railway transportation towards high-speed and heavy-load transport, higher demands are placed on the accuracy, efficiency, and automation of track wear detection. Among modern detection technologies, line-scan camera detection based on machine vision has become a mainstream method due to its advantages such as high resolution and dynamic real-time performance. This technology uses a moving vehicle carrying a line-scan camera to continuously scan the track surface and analyze wear characteristics. However, under uneven track conditions, the detection equipment inevitably suffers from vibration and impact, and the support frame must maintain the camera's stable posture during dynamic processes. This poses stringent challenges to the vibration resistance, rigidity, and adaptive adjustment capabilities of the mechanical structure.

[0003] Existing railway track wear measuring instruments generally suffer from insufficient vibration suppression and rigidity design defects in their support frame structures. On the one hand, traditional support frames often employ rigid connections, allowing the impact of track joints and vehicle vibrations during vehicle movement to be directly transmitted to the line scan camera. This results in blurred images, pixel shifts, and errors in wear measurement, potentially leading to missed detections. For example, some testing equipment lacks effective vibration buffering devices, allowing high-frequency vibrations to cause the camera's optical axis to deviate from the vertical direction by more than 2°, severely impacting the geometric accuracy of tread wear detection. On the other hand, single support structures, such as cantilever beams or simple hinged frames, are prone to elastic or plastic deformation when bearing the weight of the testing equipment and dynamic loads, causing camera detection angle shifts.

[0004] Patent application CN202421677623.8 discloses a track detection device, which includes a movable base, a detection unit, and an information receiving unit. The movable base moves on the track, the detection unit is mounted on the movable base, and the information receiving unit is connected to the movable base via an adjustment mechanism. The adjustment mechanism includes a fixed base, a telescopic adjustment component, and a mounting platform connected in sequence. The fixed base is mounted on the movable base, one end of the telescopic adjustment component is rotatably adjusted to the fixed base, and the other end is connected to the mounting platform. The information receiving unit is mounted on the mounting platform. This design allows for adjustment of the detection unit's position, facilitating detection. However, in this design, the detection unit is directly connected to the movable base, and vibrations generated when the movable base moves are directly transmitted to the detection unit, leading to a decrease in detection accuracy. Utility Model Content

[0005] The purpose of this invention is to provide a measuring instrument for the combined profile wear of railways, so as to solve the following technical problems mentioned in the background art:

[0006] Existing railway track wear measuring instruments have insufficient vibration suppression capabilities.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A measuring instrument for combined profile wear of railway tracks includes a traveling carriage, a support frame, and a line array camera. The support frame is mounted on the traveling carriage, and the line array camera is connected to the support frame. The traveling carriage drives the line array camera to move along the track, and the line array camera captures track images. The support frame includes a mounting base, a support arm, a stabilizing arm, a connecting arm, an extension arm, and a damper. The mounting base is connected to the traveling carriage. One end of the damper is hinged to the middle of the mounting base, and the other end of the damper is hinged to one end of the stabilizing arm. The other end of the stabilizing arm is hinged to the front side of the mounting base, and the damper, the stabilizing arm, and the mounting base form a first triangular structure. One end of the support arm is hinged to the rear side of the mounting base, and the other end of the support arm is hinged to one end of the connecting arm. The other end of the connecting arm is hinged to the stabilizing arm. The support arm, the connecting arm, the first triangular structure, and the mounting base form a second triangular structure. The extension arm is fixedly connected to the support arm, and the line array camera is connected to the extension arm.

[0009] Furthermore, two sets of support frames are provided, symmetrically arranged on the traveling vehicle; each set of support frames is equipped with a line scan camera.

[0010] Furthermore, a push handle is fixed to the rear of the vehicle.

[0011] Furthermore, a bottom support component is fixedly connected to the traveling vehicle, and a support frame is set on the bottom support component; the bottom support component includes a base plate, a movable plate, and an adjusting fastener; wherein, one end of the movable plate is hinged to one end of the base plate, and the adjusting fastener is fixed to the other end of the base plate; one side of the top of the adjusting fastener is bent towards the base plate, and the bent part is provided with an oblong hole; the movable plate is fixedly connected to the base plate or the adjusting fastener by bolts.

[0012] Furthermore, a cushioning pad is installed between the base plate and the traveling vehicle.

[0013] Furthermore, the damper is a spring damper.

[0014] Furthermore, the support arm, connecting arm, and stabilizing arm are all made of U-shaped steel.

[0015] Furthermore, a flexible shock-absorbing pad is provided between the extension arm and the line scan camera, and the shock-absorbing pad is made of silicone.

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

[0017] This invention features a design where one end of a damper is hinged to the middle of the mounting base, and the other end is hinged to a stabilizing arm. The other end of the stabilizing arm is hinged to the front of the mounting base, forming a first triangular structure. This design enables the damper to absorb vibration energy and the stabilizing arm to constrain structural displacement, thus solving the problem of blurred images and reduced detection accuracy caused by vibration during vehicle movement.

[0018] This utility model features a design where one end of the support arm is hinged to the rear side of the mounting base, and the other end is hinged to the connecting arm. The other end of the connecting arm is hinged to the stabilizing arm, forming a second triangular structure with the support arm, connecting arm, first triangular structure, and mounting base. This design achieves the function of enhancing the overall rigidity of the support frame through the superposition of double triangular structures, and solves the problem that a single structure is prone to deformation under stress, leading to camera detection angle deviation and affecting the accuracy of wear measurement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the support frame, bottom support, and line scan camera of this utility model.

[0021] Figure 3 This is one of the front view schematic diagrams showing the connection between the support frame, bottom support component and line scan camera of this utility model;

[0022] Figure 4 This is the second front view schematic diagram of the connection between the support frame, bottom support component and line scan camera of this utility model.

[0023] The markings in the diagram are: 1-Traveling vehicle, 2-Line scan camera, 3-Bottom support, 4-Support frame, 5-Stabilizing arm, 6-Damper, 7-Mounting base, 8-Support arm, 9-Connecting arm, 10-Extension arm, 11-Base plate, 12-Movable plate, 13-Adjusting fixing component. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Example:

[0026] An instrument for measuring the profile wear of railway components, such as Figure 1 As shown, it includes a traveling vehicle 1, a support frame 4, and a line scan camera 2; the support frame 4 is mounted on the traveling vehicle 1, and the line scan camera 2 is connected to the support frame 4; the traveling vehicle 1 drives the line scan camera 2 to move along the track, and the line scan camera 2 captures images of the track; as shown... Figure 2 As shown, the support frame 4 includes a mounting base 7, a support arm 8, a stabilizing arm 5, a connecting arm 9, an extension arm 10, and a damper 6. The mounting base 7 is connected to the traveling vehicle 1. One end of the damper 6 is hinged to the middle of the mounting base 7, and the other end of the damper 6 is hinged to one end of the stabilizing arm 5. The other end of the stabilizing arm 5 is hinged to the front side of the mounting base 7. The damper 6, the stabilizing arm 5, and the mounting base 7 form a first triangular structure. One end of the support arm 8 is hinged to the rear side of the mounting base 7, and the other end of the support arm 8 is hinged to one end of the connecting arm 9. The other end of the connecting arm 9 is hinged to the stabilizing arm 5. The support arm 8, the connecting arm 9, the first triangular structure, and the mounting base 7 form a second triangular structure. The extension arm 10 is fixedly connected to the support arm 8, and the line scan camera 2 is connected to the extension arm 10.

[0027] It should be noted that the line array camera 2 is used to acquire image data of the railway track profile. Through a linear array sensor, the track cross-section is scanned line by line as the traveling vehicle 1 moves, generating a high-precision profile image, providing raw data for subsequent wear analysis. It should also be noted that identifying track wear through images requires combining image processing algorithms and machine learning models; both the image processing algorithms and machine learning models utilize existing technologies, which will not be elaborated upon here.

[0028] Specifically, during operation, the traveling vehicle 1 moves along the track, causing the support frame 4 and the line scan camera 2 to move synchronously. The line scan camera 2 scans the track cross-section line by line using a linear array sensor, generating a high-precision profile image and capturing details of track wear, providing raw data for subsequent analysis. In the first triangular structure, the damper 6 absorbs the vibration of the traveling vehicle 1 and suppresses structural swaying through triangular geometric stability, forming the dynamic stiffness foundation of the support frame 4. The second triangular structure, relying on the stable support of the first triangular structure, forms a composite stable frame, stabilizing the installation posture of the line scan camera 2, ensuring the stability of the optical axis during imaging, and avoiding image distortion caused by vibration. Finally, the acquired images are processed through edge detection and contour fitting to restore the track profile, and the wear amount is calculated by comparing it with a standard profile.

[0029] In a preferred embodiment, such as Figure 1 As shown, two sets of support frames 4 are symmetrically arranged on the traveling vehicle 1; each set of support frames 4 is equipped with a line scan camera 2. The line scan cameras 2 of the two symmetrical support frames 4 can simultaneously collect the profiles on both sides of the track, completing the acquisition of dual-track wear data in a single scan. The data from the two cameras can be cross-validated, reducing the risk of misjudgment caused by single-camera failure or installation errors.

[0030] In a preferred embodiment, such as Figure 1 As shown, a push handle is fixed to the rear of the traveling vehicle 1. The push handle provides a fulcrum for applying force, making it easy for inspection personnel to push the traveling vehicle 1 on the track.

[0031] In a preferred embodiment, such as Figure 1 As shown, a bottom support member 3 is fixedly connected to the traveling vehicle 1, and a support frame 4 is mounted on the bottom support member 3. The bottom support member 3 includes a base plate 11, a movable plate 12, and an adjusting fastener 13. One end of the movable plate 12 is hinged to one end of the base plate 11, and the adjusting fastener 13 is fixed to the other end of the base plate 11. One side of the top of the adjusting fastener 13 is bent towards the base plate 11, and the bent part has an oblong hole. The movable plate 12 is fixed to the base plate 11 or the adjusting fastener 13 by bolts. The oblong hole is for convenient bolt connection between the movable plate 12 and the adjusting fastener 13.

[0032] Specifically, in use, first fix the movable plate 12 to the base plate 11. At this time, the camera located on the support frame 4 is perpendicular to the track surface, such as... Figure 3 As shown, scanning the rail tread at this time can detect rail tread wear. After the vertical scan is completed, the movable plate 12 is connected and fixed to the adjusting fixing part 13. At this time, the movable plate 12 tilts, and correspondingly, the support frame 4 and the line scan camera 2 will also tilt, as shown. Figure 4 As shown, taking a photo and scanning at this time can detect the wear on the outer side of the rail head.

[0033] In a preferred embodiment, a buffer pad is provided between the base plate 11 and the traveling vehicle 1. The buffer pad is used to absorb the mechanical vibration of the traveling vehicle 1 during movement, preventing the vibration from being transmitted to the camera system and preventing image blurring and decreased detection accuracy.

[0034] In a preferred embodiment, the damper 6 is a spring damper. The spring damper absorbs vibration energy through the elastic deformation of the spring and dissipates energy through the viscous resistance of the damping medium, thereby suppressing the high-frequency vibration of the vehicle 1.

[0035] In a preferred embodiment, such as Figure 1 As shown, the support arm 8, connecting arm 9, and stabilizing arm 5 are all made of U-shaped steel. U-shaped steel has high bending stiffness, which reduces its own weight and lowers the load on the traveling vehicle 1 while ensuring structural strength.

[0036] In a preferred embodiment, a flexible shock-absorbing pad made of silicone is provided between the extension arm 10 and the line scan camera 2. The shock-absorbing pad is used to absorb high-frequency vibrations transmitted by the extension arm 10, preventing image blurring caused by camera vibration.

[0037] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A measuring instrument for combined profile wear of railways, characterized in that: It includes a traveling vehicle (1), a support frame (4), and a line array camera (2); the support frame (4) is mounted on the traveling vehicle (1), and the line array camera (2) is connected to the support frame (4); the traveling vehicle (1) drives the line array camera (2) to move along the track, and the line array camera (2) captures track images; The support frame (4) includes a mounting base (7), a support arm (8), a stabilizing arm (5), a connecting arm (9), an extension arm (10), and a damper (6); wherein, the mounting base (7) is connected to the traveling vehicle (1); one end of the damper (6) is hinged to the middle of the mounting base (7), and the other end of the damper (6) is hinged to one end of the stabilizing arm (5), and the other end of the stabilizing arm (5) is hinged to the front side of the mounting base (7). The damper (6), the stabilizing arm (5), and the mounting base (7) form a first triangular structure. One end of the support arm (8) is hinged to the rear side of the mounting base (7), and the other end of the support arm (8) is hinged to one end of the connecting arm (9), and the other end of the connecting arm (9) is hinged to the stabilizing arm (5); the support arm (8), the connecting arm (9), the first triangular structure and the mounting base (7) constitute the second triangular structure; the extension arm (10) is fixed to the support arm (8), and the line scan camera (2) is connected to the extension arm (10).

2. The measuring instrument for combined profile wear of railways according to claim 1, characterized in that: There are two sets of support frames (4), which are symmetrically arranged on the traveling vehicle (1); each set of support frames (4) is equipped with a line array camera (2).

3. The measuring instrument for combined profile wear of railways according to claim 1, characterized in that: A push handle is fixed to the rear side of the traveling vehicle (1).

4. The measuring instrument for combined profile wear of railways according to claim 1, characterized in that: A bottom support member (3) is fixedly connected to the traveling vehicle (1), and a support frame (4) is set on the bottom support member (3). The bottom support member (3) includes a base plate (11), a movable plate (12), and an adjusting fixing member (13). One end of the movable plate (12) is hinged to one end of the base plate (11), and the adjusting fixing member (13) is fixed to the other end of the base plate (11). The top side of the adjusting fixing member (13) is bent towards the base plate (11), and the bent part is provided with a waist-shaped hole. The movable plate (12) is fixed to the base plate (11) or the adjusting fixing member (13) by bolts.

5. A measuring instrument for combined profile wear of railways according to claim 4, characterized in that: A buffer pad is provided between the base plate (11) and the traveling vehicle (1).

6. A measuring instrument for combined profile wear of railways according to claim 1, characterized in that: The damper (6) is a spring damper.

7. A measuring instrument for combined profile wear of railways according to claim 1, characterized in that: The support arm (8), connecting arm (9) and stabilizing arm (5) are all made of U-shaped steel.

8. A measuring instrument for combined profile wear of railways according to claim 1, characterized in that: A flexible shock-absorbing pad is provided between the extension arm (10) and the line array camera (2), and the shock-absorbing pad is made of silicone.

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