Wheel tread scratch image acquisition device

Abstract

The utility model provides a wheel tread scratch image acquisition device, and belongs to the technical field of wheel detection. The wheel tread scratch image acquisition device comprises a lifting module used for lifting a wheel away from a steel rail; the image acquisition module is used for acquiring wheel tread picture information; and the equipment control module is used for controlling the lifting module and the image acquisition module. According to the wheel tread scratch image acquisition device provided by the utility model, the lifting module is controlled by the equipment control module to lift the wheel until the wheel is separated from the steel rail, and then the image acquisition module is controlled by the equipment control module to acquire and process the information of the wheel tread and output the detection result. According to the utility model, the accuracy of wheel tread scratch detection is ensured, the time of wheel tread scratch detection is shortened, the working intensity of maintainers is reduced, and the requirement of wheel tread scratch detection is met.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel detection, in particular to a wheel tread scratch image acquisition device. Background Art

[0002] Rail vehicles have heavy axles, small contact areas between wheels and rails, and high contact stress between wheels and rails, which can easily lead to damage to the wheel treads. Wheel tread scratches can cause abnormal contact between wheels and rails, which in turn intensifies the force between wheels and rails, not only shortening the service life of vehicle parts, but also inducing fatigue failure of rail fasteners, which can lead to traffic safety accidents in severe cases. It is necessary to detect wheel tread scratches in a timely manner.

[0003] In the related technology, wheel tread scratch detection mainly refers to wheel tread profile detection, which uses the wheel tread profile data measured by related measuring equipment to determine whether the wheel tread has scratches. It is mainly divided into trackside vehicle profilers and handheld vehicle profilers. Trackside vehicle profilers can detect whether the wheel tread has scratches without stopping the vehicle. Handheld vehicle profilers have low purchase costs and high measurement accuracy.

[0004] However, in the above-mentioned methods, the trackside vehicle profiler is affected by environmental factors such as vehicle speed, light, and foreign matter on the wheel surface, so the utilization rate of the measured wheel tread profile data is low and the detection time is long. The handheld vehicle profiler equipment requires manual operation, which does not reduce the work intensity of maintenance workers. Utility Model Content

[0005] The utility model provides a wheel tread scratch image acquisition device, which is used to solve the defects of the wheel tread scratch detection device in the prior art, improve the detection accuracy, shorten the detection time, and reduce the work intensity of maintenance personnel.

[0006] The utility model provides a wheel tread scratch image acquisition device, comprising: a lifting module for lifting the wheel off the rail; an image acquisition module for acquiring wheel tread image information; and an equipment control module for controlling the lifting module and the image acquisition module.

[0007] According to a wheel tread scratch image acquisition device provided by the utility model, the lifting module includes a lifting platform and a driving mechanism; the lifting platform can be adjusted to rise and fall through the equipment control module; the driving mechanism is installed on one side of the lifting platform.

[0008] According to a wheel tread scratch image acquisition device provided by the utility model, the driving mechanism includes a driving wheel mounting seat, a driven wheel, a driving wheel and a driving motor; the driving wheel mounting seat is installed on one side of the lifting platform; the driven wheel and the driving wheel are installed on the driving wheel mounting seat, and the driving motor is used to drive the driving wheel to rotate.

[0009] According to a wheel tread scratch image acquisition device provided by the utility model, the image acquisition module includes a ball screw linear module, a mechanical arm, a camera module and a host computer, the ball screw linear module is installed at one end of the mechanical arm, and the camera module is installed at the other end of the mechanical arm; the ball screw linear module is installed on the lifting module to drive the mechanical arm to move; the mechanical arm is used to adjust the position of the camera module; the host computer is used to analyze the information collected by the camera module.

[0010] According to the wheel tread scratch image acquisition device provided by the utility model, the camera module includes a sensor mounting seat, a camera and an image acquisition card; the sensor mounting seat is connected to the mechanical arm. The camera is installed on the sensor mounting seat; the image acquisition card is used to transmit the pictures taken by the camera to the host computer.

[0011] According to the wheel tread scratch image acquisition device provided by the utility model, the camera module also includes a fill light, and the fill light is installed on the sensor mounting seat.

[0012] According to a wheel tread scratch image acquisition device provided by the utility model, the equipment control module includes an industrial controller and a switch; the industrial controller is used to receive and send signals, and the switch is used to connect the industrial controller, the lifting module, and the image acquisition module to realize the transmission and exchange of data and signals.

[0013] According to a wheel tread scratch image acquisition device provided by the utility model, the driving mechanism further comprises a wheel axle encoder, and the wheel axle encoder is used to cooperate with the driving wheel to output the rotation speed information of the driving wheel.

[0014] The wheel tread scratch image acquisition device provided by the utility model controls the lifting module through the equipment control module to lift the wheel to be separated from the rail, and then controls the image acquisition module through the equipment control module to collect wheel tread information. The utility model ensures the accuracy of wheel tread scratch detection, shortens the time of wheel tread scratch detection, reduces the work intensity of maintenance personnel, and meets the needs of wheel tread scratch detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1It is a structural schematic diagram of the wheel tread scratch image acquisition device provided by the utility model;

[0017] Figure 2 The utility model is a schematic diagram of the control principle of the wheel tread scratch image acquisition device provided by the utility model.

[0018] Reference numerals:

[0019] 100. Lifting module;

[0020] 110, lifting platform; 120, driving mechanism; 121, driving wheel mounting seat; 122, driven wheel; 123, driving wheel;

[0021] 200. Image acquisition module;

[0022] 210, ball screw linear module; 220, robotic arm; 230, camera module; 231, sensor mounting seat; 232, camera; 233, fill light; 240, host computer;

[0023] 300. Equipment control module;

[0024] 310, industrial controller; 320, switch;

[0025] 400, power supply;

[0026] 500, data line;

[0027] 600. Wheel. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on Figure 1 The orientation and position of the wheel tread scratch image acquisition device shown in normal placement are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words 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, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] The utility model provides a wheel tread scratch image acquisition device, comprising a lifting module 100, an image acquisition module 200 and a device control module 300. A wheel 600 enters the detection station of the wheel tread scratch detection device along the rail of the maintenance line, and the lifting module 100 is controlled by the device control module 300 to lift the wheel 600 until it is separated from the rail, and then the image acquisition module 200 is controlled by the device control module 300 to collect information on the wheel tread. The utility model ensures the accuracy of wheel tread scratch detection, shortens the time of wheel tread scratch detection, reduces the work intensity of maintenance personnel, and meets the needs of wheel tread scratch detection.

[0033] In one embodiment, the lifting module 100 includes a lifting platform 110 and a driving mechanism 120. The lifting platform 110 is arranged on the ground, the bottom platform of the lifting platform 110 is located on a solid foundation, and the top platform of the lifting platform 110 serves as a mounting base for other components. The driving mechanism 120 is installed on the top platform of the lifting platform 110. After the wheel 600 enters the maintenance station, the lifting platform moves so that the driving mechanism 120 contacts the wheel 600 rim, the lifting platform rises, and the driving mechanism 120 is lifted, and the wheel 600 is lifted until it is out of contact with the rail.

[0034] In one embodiment, the driving mechanism 120 includes a driving wheel mounting seat 121, a driven wheel 122, a driving wheel 123 and a driving motor (not shown in the figure), the driving wheel mounting seat 121 is fixed to the lifting platform by bolts and positioning pins, and the driven wheel 122 and the driving wheel 123 are mounted on the driving wheel mounting seat 121 by bearings. When the wheel 600 is lifted up to be out of contact with the rail, the driving motor drives the driving wheel 123 to rotate, and the master and slave wheels contact the rims of the left and right wheels 600 of the wheelset, and the rotor rotation of the driving motor is transmitted to the wheelset rotation, so that the wheels 600 rotate to cooperate with the image acquisition module 200 to collect information.

[0035] Exemplarily, the driving motor is a servo motor, which is matched with the rotating shaft of the driving wheel 123 through a coupling, and is matched with the top platform of the lifting platform 110 through bolts.

[0036] In one embodiment, the driving mechanism 120 further includes an axle encoder (not shown in the figure), which is used to cooperate with the driving wheel 123 to output the rotation speed information of the driving wheel 123 .

[0037] In one embodiment, the image acquisition module 200 includes a ball screw linear module 210, a mechanical arm 220, a camera module 230 and a host computer 240. After the ball screw linear module 210 controls the mechanical arm 220 to move to the corresponding position, the position of the camera module 230 is adjusted by the mechanical arm 220. After the camera module 230 acquires information, it transmits it to the host computer 240 for analysis and processing and then outputs the detection result. The host computer cites the patented iron ladle number recognition system based on computer image recognition technology (patent number: CN109284755A).

[0038] Exemplarily, the ball screw linear module 210 is composed of a ball screw, a slider, a guide rail, a base and a drive motor, and is used to control the movement of the robot arm 220 along the guide rail. The drive motor is a stepper motor, which drives the ball screw to make the robot arm 220 fixed on the slider move linearly along the guide rail.

[0039] Exemplarily, the base of the ball screw linear module 210 is fixed to the top platform of the lifting platform 110 by bolts and positioning pins to determine the relative position of the ball screw linear module 210 on the platform.

[0040] Exemplarily, the robot arm 220 is a two-axis robot arm 220, one end of which is matched with the slider of the ball screw linear module 210 through bolts, and the other end of which is matched with the camera module 230 through bolts.

[0041] In one embodiment, the camera module 230 includes a sensor mounting seat 231, a camera 232 and an image acquisition card. The sensor mounting seat 231 is mounted at one end of the mechanical arm 220, and the camera 232 is mounted on the sensor mounting seat 231. The camera 232 is used to capture and collect information about the wheel tread. The image acquisition card transmits the wheel tread image data continuously captured by the camera 232 to the host computer 240 in frames. The host computer 240 performs multi-level judgment on the received wheel tread image data through the wheel tread scratch prediction model, and finally outputs three results: wheel tread scratch, suspected wheel tread scratch and wheel tread.

[0042] Exemplarily, the camera 232 is a linear array industrial camera 232, which cooperates with the sensor mounting seat 231 through bolts and shock-absorbing pads, and the electrical signal pulse of the equipment control module 300 triggers the collection of the wheel tread image.

[0043] In one embodiment, the camera module 230 also includes a fill light 233, which is mounted on the sensor mounting base 231 by bolts and shock-absorbing pads. The fill light 233 is turned on and off by the electrical signal pulse emitted by the device control module 300. By providing a light source at a certain angle to the wheel tread, the non-scratched area of ​​the wheel tread is brighter, while the scratched area of ​​the wheel tread is relatively dark.

[0044] In one embodiment, the equipment control module 300 includes an industrial controller 310 and a switch 320. The industrial controller 310 mainly receives feedback signals from the host computer 240 and the wheel shaft encoder, and sends control signals to the camera 232, the fill light 233, the servo motor of the lifting module 100, and the stepper motor of the image acquisition module 200. The switch 320 is used to connect the industrial controller 310, the lifting module 100, and the image acquisition module 200 to realize the transmission and exchange of data and signals.

[0045] Exemplarily, the industrial controller 310 is a PIC (Photonic Integrated Circuit).

[0046] In one embodiment, the wheel tread abrasion image acquisition device further includes a power supply 400 and a data line 500 , wherein the power supply 400 is used to provide power to the wheel tread abrasion image acquisition device, and the data line 500 is used to connect the lifting module 100 , the image acquisition module 200 and the equipment control module 300 .

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wheel tread scratch image acquisition device, characterized in that: include: A lifting module to lift the wheels off the rails; An image acquisition module, used for acquiring wheel tread image information; Equipment control module, used to control the lifting module and image acquisition module; The lifting module includes a lifting platform and a driving mechanism; The lifting platform can be adjusted to rise and fall through the equipment control module; The driving mechanism is mounted on one side of the lifting platform; The driving mechanism comprises a driving wheel mounting seat, a driven wheel, a driving wheel and a driving motor; The driving wheel mounting seat is mounted on one side of the lifting platform; The driven wheel and the driving wheel are mounted on the driving wheel mounting seat, and the driving motor is used to drive the driving wheel to rotate; The image acquisition module includes a ball screw linear module, a mechanical arm, a camera module and a host computer, wherein the ball screw linear module is installed at one end of the mechanical arm, and the camera module is installed at the other end of the mechanical arm; The ball screw linear module is installed on the lifting module to drive the mechanical arm to move; The mechanical arm is used to adjust the position of the camera module; The camera module includes a sensor mounting seat, a camera and an image acquisition card; The sensor mounting seat is connected to the mechanical arm, and the camera is mounted on the sensor mounting seat; The image acquisition card is used to transmit the pictures taken by the camera to the host computer; The equipment control module includes an industrial controller and a switch; The industrial controller is used to receive and send signals, and the switch is used to connect the industrial controller, the lifting module, and the image acquisition module to achieve transmission and exchange of data and signals.

2. The wheel tread scratch image acquisition device according to claim 1, characterized in that: The camera module also includes a fill light, which is mounted on the sensor mounting base.

3. The wheel tread scratch image acquisition device according to claim 1, characterized in that: The driving mechanism further comprises an axle encoder, which is used to cooperate with the driving wheel to output the rotation speed information of the driving wheel.

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