Rail lubrication spraying system, method and equipment

Abstract

The embodiment of the invention relates to the technical field of rail traffic, and discloses a rail lubrication spraying system, method and equipment, the system comprises side grinding equipment and at least one spraying device, and the spraying device is mounted in the side direction of a train wheel; the side grinding equipment comprises a side grinding detection device and a control module, and the control module is connected with the side grinding detection device and the spraying device. The side grinding detection device detects whether the steel rail is subjected to side grinding or not when a train travels on a curve section, and sends a side grinding signal to the control module if side grinding occurs; and the control module controls the spraying device to spray a lubricant to the wheel-rail contact position according to the side grinding signal. By means of the mode, the lubricating agent can be automatically and accurately sprayed to the steel rail side grinding position, steel rail lubricating materials are saved, and the problem that steel rail side grinding lubrication is insufficient or excessive is effectively solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of rail transportation technology, and in particular to a rail lubrication spraying system, method and equipment. Background Art

[0002] In rail transit, when a train travels on a curve, the wheel-rail interaction intensifies due to line changes and the influence of the outer rail superelevation, and the wheel flange is prone to sticking, resulting in side wear of the rail. The side wear of the rail will accelerate the damage of the rail, shorten its service life and increase the wheel-rail noise.

[0003] Currently, there are many solutions to the problem of side wear on curved rails. In practice, rail lubrication is commonly used to address side wear on curved rails. This method involves installing a lubrication device next to the rail, applying lubricant to the wheels, and using the wheels to carry the lubricant to the curved rails, thereby lubricating the side of the rails in the curved section and reducing wear on the side of the rails in the curved section. However, the location of side wear on curved rails may vary on actual lines. Using current lubrication methods can result in ineffective lubrication of the side wear rails in the curved section, or over-lubrication of the rails in some locations, resulting in low accuracy. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention provide a rail lubrication spraying system, method and equipment to solve the problems existing in the prior art.

[0005] According to one aspect of an embodiment of the present invention, a rail lubrication spraying system is provided, the system comprising a side grinding device and a spraying device, the spraying device comprising at least one, the spraying device being installed on the side of a train wheel;

[0006] The side grinding device includes a side grinding detection device and a control module, and the control module is connected to the side grinding detection device and the spraying device respectively;

[0007] The side wear detection device detects whether side wear occurs on the rail when the train is traveling on a curve section, and if side wear occurs, sends a side wear signal to the control module;

[0008] The control module controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

[0009] In an optional manner, the side wear detection device includes a camera and an image processing system, wherein the camera includes at least two cameras, and the cameras are respectively installed on the front side and / or the rear side of the two wheels of the train;

[0010] The image processing system is connected to the camera and the control module respectively;

[0011] The camera captures a wheel-rail image when the train travels on a curved section and sends the image to the image processing system, wherein the wheel-rail image is an image captured at a position where the wheel and rail contact;

[0012] The image processing system analyzes the wheel-rail image and determines whether side wear occurs on the rail according to the analysis result. If so, the side wear signal is sent to the control module.

[0013] In an optional manner, the image processing system preprocesses the wheel-rail image, analyzes in the preprocessed wheel-rail image whether the center axis of the rail along the vertical direction and the center axis of the wheel along the vertical direction are on the same straight line, and obtains the analysis result;

[0014] If the analysis result shows that they are on the same straight line, then the rails have side wear; if the analysis result shows that they are not on the same straight line, then the rails have not side wear.

[0015] In an optional manner, the system further comprises a mounting support, the mounting support being arranged on the side of the wheel, the spraying device being arranged on the mounting support, and the mounting support being connected to the control module;

[0016] When side wear of the rail occurs, the image processing system further obtains position information corresponding to the position where the side wear of the rail occurs according to the wheel-rail image, and sends the position information to the control module;

[0017] The control module controls the rotation of the mounting bracket according to the position information so that the spraying device is aligned with the wheel-rail contact position where side wear of the rail occurs, and controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

[0018] In an optional manner, the control module controls the mounting support to move within a preset first angle range in the front-rear direction of the train according to the position information, and / or the control module controls the mounting support to move within a preset second angle range in the vertical direction according to the position information.

[0019] In an optional manner, the system further includes an inertial navigation system, and the control module is connected to the inertial navigation system and the camera respectively;

[0020] The inertial navigation system identifies whether the current travel section of the train is a curved section during the travel of the train, and if so, generates a curve signal and sends the curve signal to the control module;

[0021] The control module controls the camera to start and capture the wheel-rail image according to the curve signal.

[0022] In an optional manner, the inertial navigation system determines a travel speed during the travel of the train and sends the travel speed to the control module;

[0023] The control module controls the spraying speed of the spraying device according to the driving speed, and / or the control module controls the distance between the position where the spraying device contacts the wheel rail according to the driving speed.

[0024] In an optional embodiment, the system further comprises a frame, both ends of the frame being suspended from both ends of a wheel axle of the train, the frame being located above the wheel, and the camera being provided on the frame and located directly in front of and / or directly behind the wheel;

[0025] The spraying device is installed on the wheel axle of the train and is located on the side of the wheel.

[0026] According to another aspect of an embodiment of the present invention, a rail lubrication spraying method based on the above rail lubrication spraying system is provided, the method comprising:

[0027] The side wear detection device detects whether side wear occurs on the rail when the train is traveling on a curve section, and if side wear occurs, sends a side wear signal to the control module;

[0028] The control module controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

[0029] According to another aspect of an embodiment of the present invention, a side grinding device is provided, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute the steps performed by the side grinding device as described above.

[0030] In an embodiment of the present invention, when a side wear detection device detects side wear on a particular rail, a control module controls a spraying device based on the side wear signal to spray lubricant at the wheel-rail contact point on the rail where the side wear occurs. The lubricant lubricates the rail side wear location, effectively preventing further deterioration of the side wear. This embodiment detects rail side wear through a side wear detection device and controls the spraying device through a control module to spray lubricant at the wheel-rail contact point where the side wear occurs. This allows for automatic and accurate spraying of lubricant at the rail side wear location, conserving rail lubricant material and effectively resolving the problem of insufficient or excessive lubrication of rail side wear.

[0031] The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to more clearly understand the technical means of the embodiments of the present invention, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the drawings. In the drawings:

[0033] Figure 1 A schematic structural diagram of an embodiment of a rail lubrication spraying system provided by the present invention is shown;

[0034] Figure 2 A schematic structural diagram of another embodiment of the rail lubrication spraying system provided by the present invention is shown;

[0035] Figure 3 An environmental schematic diagram of a rail lubrication spraying system provided by an embodiment of the present invention is shown;

[0036] Figure 4 A schematic structural diagram of another embodiment of the rail lubrication spraying system provided by the present invention is shown;

[0037] Figure 5 A schematic structural diagram of another embodiment of the rail lubrication spraying system provided by the present invention is shown;

[0038] Figure 6 A schematic flow chart of a rail lubrication spraying method according to an embodiment of the present invention is shown;

[0039] Figure 7 A schematic structural diagram of a side grinding device provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0041] Figure 1 FIG. 1 shows a schematic structural diagram of an embodiment of a rail lubrication spraying system provided by the present invention. Figure 1As shown, the rail lubrication spraying system includes side grinding equipment and a spraying device. The spraying device includes at least one device mounted laterally to the wheels. When there is only one spraying device, it is located between the two wheels and can be moved or rotated to spray lubricant at the wheel-rail contact point on the left wheel or the wheel-rail contact point on the right wheel. When there are two or more spraying devices, at least one spraying device is mounted laterally to each wheel.

[0042] The side grinding device includes a side grinding detection device and a control module, and the control module is connected to the side grinding detection device and the spraying device respectively. The side grinding detection device detects whether the rail is side grinding when the train is traveling on a curved section, and if side grinding occurs, a side grinding signal is sent to the control module. In this embodiment, when the train is traveling on a curved section, if the rail is side grinding, it will excite a corresponding decibel of noise. Therefore, the side grinding detection device can determine whether the rail is side grinding by detecting the noise when the train is traveling on the curved section. The detection model is trained using multiple noise samples when the train is traveling on the curved section, wherein the noise samples include noise samples when the rail is side grinding and noise samples when the rail is not side grinding. After the detection model is trained, the noise when the train is traveling on the curved section is input into the trained detection model to detect whether the rail is side grinding. When the detection model detects that the rail is side grinding, the center of the arc corresponding to the curved section is used to determine whether the left rail or the right rail is side grinding. In other embodiments, the side wear detection device may include components such as a gyroscope, which can detect physical quantities such as the acceleration and angular velocity of the train, and determine whether side wear of the rail occurs by the acceleration and angular velocity of the train. Among them, determining whether side wear of the rail occurs by the acceleration and angular velocity can adopt existing technology, which will not be repeated here.

[0043] The control module is a central processing unit. When the side wear detection device detects side wear on a particular rail, the control module controls the spraying device based on the side wear signal to spray lubricant at the wheel-rail contact point where the side wear occurs. The lubricant lubricates the rail side wear area, effectively preventing further deterioration of the side wear. This embodiment detects rail side wear through the side wear detection device and controls the spraying device through the control module to spray lubricant at the wheel-rail contact point where the side wear occurs. This allows for automatic and accurate spraying of lubricant at the rail side wear area, conserving rail lubricant material and effectively resolving the problem of insufficient or excessive lubrication of rail side wear.

[0044] In one embodiment, referring to Figure 2-Figure 3 The side wear detection device includes a camera and an image processing system. Since there are two rails, the camera includes at least two, one camera corresponding to one rail, and the camera is installed on the front side and / or the rear side of the train wheel.

[0045] The image processing system is connected to the camera and control module. The camera captures wheel-rail images in real time or at scheduled intervals while the train is traveling on a curve, and sends these images to the image processing system. The wheel-rail images are taken directly in front of and / or behind the wheels, at the locations where the wheel and rail meet. One camera captures the wheel-rail image directly in front of or behind one of the parallel wheels, while the other camera captures the wheel-rail image directly in front of or behind the other parallel wheel.

[0046] The image processing system analyzes the wheel-rail image and determines whether side wear has occurred based on the analysis results. If so, a side wear signal is sent to the control module. The image processing system analyzes the wheel-rail image and can compare the wheel-rail image with sample wheel-rail images of rails that have experienced side wear to identify whether side wear has occurred. Alternatively, the system can establish a model based on big data to identify whether side wear has occurred, and so on. This embodiment utilizes an onboard camera to capture wheel-rail images, uses the image processing system to identify side wear on the rails, and controls the spraying device to automatically spray based on the analysis results. This allows for accurate spraying of the side wear location, effectively conserves rail lubricant, and prevents over-lubrication of the rails.

[0047] Preferably, the image processing system first pre-processes the wheel-rail image. The pre-processing may include using filtering technology to remove noise from the wheel-rail image, identifying image edges or performing binarization processing on the wheel-rail image after noise removal. The image processing system analyzes whether the vertical axis of the rail and the vertical axis of the wheel in the pre-processed wheel-rail image are on the same straight line, and obtains the analysis result. If the analysis result shows that they are on the same straight line, the rail has side wear. If the analysis result shows that they are not on the same straight line, the rail has not side wear. Figure 3 As shown, a camera can capture images of the wheel / rail where the rail contacts the wheel directly in front of or behind the wheel. Whether rail side wear is occurring is determined by analyzing whether the vertical center axis of the rail and the vertical center axis of the wheel are aligned. This embodiment uses images of the wheel / rail directly in front of or behind the wheel to clearly, intuitively, and accurately identify rail side wear.

[0048] Preferably, there are two cameras, which are respectively installed in front of or behind the two wheels of the train. Figure 3 As shown, there are four spraying devices, one on each side of each wheel. When the control module receives a side-wear signal, which includes a camera identifier, it can determine which side of the rail is side-wearing. Based on the side-wear signal, the control module then controls the two spraying devices on the corresponding side to spray lubricant at the wheel-rail contact point. Both spraying devices apply lubricant to the side-wearing rail, ensuring adequate lubrication of the rail.

[0049] In one embodiment, if Figure 4 As shown, the rail lubrication spraying system also includes a mounting support, which is arranged on the side of the wheel, and a spraying device is arranged on the mounting support, and the mounting support is connected to the control module; when side wear of the rail occurs, the image processing system obtains position information corresponding to the position where the side wear of the rail occurs based on the wheel-rail image, and sends the position information to the control module; the control module controls the rotation of the mounting support according to the position information so that the spraying device is aligned with the wheel-rail contact position where the side wear of the rail occurs, and controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

[0050] In this embodiment, the locations where rail side wear occurs include the inner and outer sides of the rail. The wheel-rail image can be used to identify whether the rail side wear occurs on the inner or outer side of the rail. The inner side of the rail refers to the side of the rail close to the other rail, and the outer side of the rail refers to the side of the rail away from the other rail. When rail side wear occurs, position information corresponding to the location where the rail side wear occurs is obtained based on the wheel-rail image. The control module controls the rotation of the mounting bracket based on the position information to adjust the angle of the spray device to align with the wheel-rail contact point where the rail side wear occurs, thereby accurately spraying lubricant at the wheel-rail contact point where the rail side wear occurs.

[0051] Furthermore, the control module controls the mounting support to move within a preset first angular range in the fore-aft direction of the train based on the position information, and / or controls the mounting support to move within a preset second angular range in the vertical direction based on the position information. Because the image processing system takes a certain amount of time to process images while the train is moving, there is a lag in the spraying of lubricant by the spraying device, which prevents the spraying of lubricant to the areas where side wear of the rail occurs in the initial section. Therefore, in this embodiment, the mounting support can be controlled to move within a preset first angular range in the fore-aft direction of the train, for example, the first angular range is -5 to 5 degrees, so that lubricant can be sprayed to all areas where side wear of the rail occurs. Furthermore, the curve radius and superelevation may vary. Therefore, in this embodiment, the mounting support can be controlled to move within a preset second angular range in the vertical direction, for example, the second angular range is -3 to 3 degrees, so that lubricant can be sprayed to all areas where side wear of the rail occurs, when the spraying device is spraying.

[0052] In one embodiment, if Figure 5As shown, the rail lubrication spraying system also includes an inertial navigation system (INS), with the control module connected to the INS and camera. During train travel, the INS identifies whether the current section is a curved section. If so, it generates a curve signal and sends it to the control module. Based on the curve signal, the control module activates the camera and captures wheel-rail images. The INS in this embodiment can be a fiber-optic INS, but other INS systems are also acceptable. The INS can accurately identify curved sections and trigger the camera to capture wheel-rail images on these sections, facilitating accurate identification of rail side wear on these curved sections.

[0053] Furthermore, the inertial navigation system determines the train's speed during travel and transmits the speed to the control module; the control module controls the spraying speed of the spraying device based on the travel speed, and / or controls the distance between the spraying device and the contact point between the wheel and rail based on the travel speed. In this embodiment, to more evenly spray the lubricant, the spraying speed of the spraying device is controlled based on the train's travel speed. When the train's travel speed is faster, the spraying speed of the spraying device is correspondingly faster, while when the train's travel speed is slower, the spraying speed of the spraying device is correspondingly slower, thereby ensuring uniform spraying. Furthermore, the distance between the spraying device and the contact point between the wheel and rail is controlled based on the travel speed. When the train's travel speed is faster, the distance between the spraying device and the contact point between the wheel and rail can be closer, while when the train's travel speed is slower, the distance between the spraying device and the contact point between the wheel and rail can be farther, thereby ensuring uniform spraying.

[0054] In one embodiment, the rail lubrication spray system further comprises a frame, such as Figure 3 As shown, the frame is suspended from both ends of the train's wheel axle. The frame is located above the wheel. The camera is mounted on the frame, providing high stability. It is located directly in front of and / or behind the wheel, aiming at the wheel-rail contact point directly in front of and / or behind the wheel, allowing the camera to accurately capture wheel-rail images. The spray device is mounted on the train's wheel axle, providing high stability. It is located lateral to the wheel, facilitating alignment with the wheel-rail contact point.

[0055] Figure 6 The flow chart of the rail lubrication spraying method according to the present invention is shown based on the above-mentioned rail lubrication spraying system embodiment, wherein the spraying device includes at least one, and the spraying device is installed on the side of the train wheel; the side wear equipment includes a side wear detection device and a control module, and the control module is connected to the side wear detection device and the spraying device respectively. Figure 6 As shown, the method includes the following steps:

[0056] Step 101: The side wear detection device detects whether side wear of the rail occurs when the train is traveling on a curve section, and if side wear occurs, sends a side wear signal to the control module;

[0057] In step 102 , the control module controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

[0058] The embodiment of the rail lubrication spraying method of the present invention is substantially the same as the embodiment of the rail lubrication spraying system described above, and reference may be made to the embodiment of the rail lubrication spraying system described above.

[0059] In an embodiment of the present invention, when a side wear detection device detects side wear on a particular rail, a control module controls a spraying device based on the side wear signal to spray lubricant at the wheel-rail contact point on the rail where the side wear occurs. The lubricant lubricates the rail side wear location, effectively preventing further deterioration of the side wear. This embodiment detects rail side wear through a side wear detection device and controls the spraying device through a control module to spray lubricant at the wheel-rail contact point where the side wear occurs. This allows for automatic and accurate spraying of lubricant at the rail side wear location, conserving rail lubricant material and effectively resolving the problem of insufficient or excessive lubrication of rail side wear.

[0060] Figure 7 The schematic diagram of the structure of the side grinding device embodiment of the present invention is shown. The specific embodiment of the present invention does not limit the specific implementation of the side grinding device.

[0061] like Figure 7 As shown, the side grinding device may include: a processor (processor) 402, a communication interface (Communications Interface) 404, a memory (memory) 406, and a communication bus 408.

[0062] Processor 402, communication interface 404, and memory 406 communicate with each other via communication bus 408. Communication interface 404 is used to communicate with other computer devices, such as client devices or other server network elements. Processor 402 is used to execute program 410, which can specifically perform the steps described above in the embodiment for side grinding equipment.

[0063] Specifically, the program 410 may include program code including computer-executable instructions.

[0064] Processor 402 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement an embodiment of the present invention. The one or more processors included in the side grinding device may be processors of the same type, such as one or more CPUs, or may be processors of different types, such as one or more CPUs and one or more ASICs.

[0065] The memory 406 is used to store the program 410. The memory 406 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0066] Program 410 can be specifically called by processor 402 to enable the side grinding device to perform the following operations: detect whether side grinding occurs on the rail when the train is traveling on a curve section, and if side grinding occurs, control the spraying device to spray lubricant on the wheel-rail contact position according to the side grinding signal.

[0067] In this embodiment of the present invention, when side wear is detected on a particular rail, a spraying device is controlled based on a side wear signal to spray lubricant at the wheel-rail contact point on the rail where the side wear occurs. The lubricant lubricates the rail side wear area, effectively preventing further deterioration of the side wear. By detecting rail side wear and controlling the spraying device to spray lubricant at the wheel-rail contact point where the side wear occurs, this embodiment can automatically and accurately spray lubricant at the rail side wear area, saving rail lubricant material and effectively resolving the problem of insufficient or excessive lubrication of rail side wear.

[0068] An embodiment of the present invention provides a computer-readable storage medium, which stores at least one executable instruction. When the executable instruction runs on a side grinding device, the side grinding device executes any of the above method embodiments.

[0069] An embodiment of the present invention provides a computer program, which can be called by a processor to enable a side grinding device to execute any of the above method embodiments.

[0070] An embodiment of the present invention provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are run on a computer, the computer is caused to execute any of the above method embodiments.

[0071] The algorithm or demonstration provided herein are not inherently relevant to any particular computer, virtual system or other equipment. Various general-purpose systems may also be used together with the teachings based on this. According to the above description, it is apparent that the structure required for constructing this type of system. In addition, the embodiment of the present invention is not directed to any specific programming language yet. It should be understood that various programming languages can be utilized to realize the content of the present invention described herein, and the above description of specific languages is for the purpose of disclosing the best mode of the present invention.

[0072] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0073] Similarly, it should be understood that in order to streamline the present invention and facilitate understanding of one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim.

[0074] Those skilled in the art will appreciate that the modules in the computer device in the embodiment can be adaptively changed and set in one or more computer devices different from the embodiment. The modules or units or components in the embodiment can be combined into one module or unit or component, and can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or computer device disclosed so far can be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) can be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0075] It should be noted that the above embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by a person skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments should not be understood as limiting the order of execution unless otherwise specified.

Claims

1. A rail lubrication spraying system, characterized in that: The system includes a side grinding device and a spraying device, wherein the spraying device includes at least one, and the spraying device is installed on the side of the train wheel; The side grinding device includes a side grinding detection device and a control module, and the control module is connected to the side grinding detection device and the spraying device respectively; The side wear detection device detects whether side wear occurs on the rail when the train is traveling on a curve section, and if side wear occurs, sends a side wear signal to the control module; The control module controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

2. The system according to claim 1, wherein: The side wear detection device includes a camera and an image processing system, wherein the camera includes at least two cameras, and the cameras are respectively installed on the front side and / or the rear side of the two wheels of the train; The image processing system is connected to the camera and the control module respectively; The camera captures a wheel-rail image when the train travels on a curved section and sends the image to the image processing system, wherein the wheel-rail image is an image captured at a position where the wheel and rail contact; The image processing system analyzes the wheel-rail image and determines whether side wear occurs on the rail according to the analysis result. If so, the side wear signal is sent to the control module.

3. The system according to claim 2, characterized in that The image processing system pre-processes the wheel-rail image, analyzes in the pre-processed wheel-rail image whether the center axis of the rail in the vertical direction and the center axis of the wheel in the vertical direction are on the same straight line, and obtains the analysis result; If the analysis result shows that they are on the same straight line, then the rails have side wear; if the analysis result shows that they are not on the same straight line, then the rails have not side wear.

4. The system according to claim 2, wherein: The system further includes a mounting support, the mounting support being arranged on the side of the wheel, the spraying device being arranged on the mounting support, and the mounting support being connected to the control module; When side wear of the rail occurs, the image processing system further obtains position information corresponding to the position where the side wear of the rail occurs according to the wheel-rail image, and sends the position information to the control module; The control module controls the rotation of the mounting bracket according to the position information so that the spraying device is aligned with the wheel-rail contact position where side wear of the rail occurs, and controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

5. The system according to claim 4, characterized in that The control module controls the mounting support to move within a preset first angle range in the front-rear direction of the train according to the position information, and / or controls the mounting support to move within a preset second angle range in the vertical direction according to the position information.

6. The system according to any one of claims 2 to 5, characterized in that: The system further includes an inertial navigation system, and the control module is connected to the inertial navigation system and the camera respectively; The inertial navigation system identifies whether the current travel section of the train is a curved section during the travel of the train, and if so, generates a curve signal and sends the curve signal to the control module; The control module controls the camera to start and capture the wheel-rail image according to the curve signal.

7. The system according to claim 6, characterized in that The inertial navigation system determines the travel speed of the train during its travel, and sends the travel speed to the control module; The control module controls the spraying speed of the spraying device according to the driving speed, and / or the control module controls the distance between the position where the spraying device contacts the wheel rail according to the driving speed.

8. The system according to claim 2, wherein: The system further includes a frame, both ends of which are suspended from both ends of the wheel axle of the train, the frame being located above the wheel, and the camera being arranged on the frame and located directly in front of and / or directly behind the wheel; The spraying device is installed on the wheel axle of the train and is located on the side of the wheel.

9. A rail lubrication spraying method based on the rail lubrication spraying system according to any one of claims 1 to 8, characterized in that: The method comprises: The side wear detection device detects whether side wear occurs on the rail when the train is traveling on a curve section, and if side wear occurs, sends a side wear signal to the control module; The control module controls the spraying device to spray lubricant on the wheel-rail contact position according to the side wear signal.

10. A side grinding device, characterized in that: The side grinding device includes: a processor, a memory, a communication interface and a communication bus, and the processor, the memory and the communication interface communicate with each other through the communication bus; the memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute the steps performed by the side grinding device as described in any one of claims 1-8.

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