Wheel set eccentric wear control system and method

Abstract

The present invention discloses a wheel set eccentric wear control system and method, the system comprises: a detection device, a control device and an actuating device; the control device is connected to the detection device and the actuating device respectively; the detection device is used to obtain wheel data, rail data and contact data in real time; the control device is used to judge whether the wheel set has eccentric wear according to the wheel data, rail data and contact data, and if so, control the actuating device to start; the actuating device is used to apply a lateral force to the wheel set to make the wheel set out of the eccentric wear state. The system controls the eccentric wear in real time during the operation of the wheel, timely discovers and prevents the further development of the eccentric wear, can effectively extend the life of the wheel set, and reduce the maintenance and detention time to improve the transportation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation, and in particular to a wheelset eccentric wear control system and method. Background Art

[0002] Bogie wheels are important components of locomotives and play a very important role in the safety and stability of train operation. During operation, wheelsets mainly play the role of load-bearing, running and guiding. Due to the existence of friction, wheel-rail wear is inevitable, including wheel tread wear and wheel flange wear. However, abnormal wear of the wheel flange will change the normal wheel-rail relationship and reduce operational safety. When the thickness of the wheelset flange is close to the limit, the wheelset diameter needs to be frequently turned to restore the thickness of the wheelset flange, which greatly reduces the service life of the wheelset. How to effectively reduce the wear of the wheel flange, guide the economical turning and repair of the wheels, and increase the service life of the wheelset has become an important issue in the railway field worldwide.

[0003] As a phenomenon of abnormal wheel flange wear, the problem of wheel flange eccentric wear has existed for a long time. The measures currently generally taken include promoting the use of wheel flange lubrication devices, ensuring the structural parameters of the bogie, strictly controlling the overall dimensions of the bogie, improving the mechanical properties of the wheel-rail material, strictly controlling the working height difference of the primary or secondary springs, timely replacing aging and deformed rubber components, and strictly controlling the wheel diameter difference, etc. These control measures are post-remedial measures after a certain degree of eccentric wear occurs. Once a wheel set has slight eccentric wear, the wheel flange wear rate will develop very quickly. If it is not discovered in time, it will lead to a sharp deterioration of eccentric wear, greatly reducing the service life of the wheel set.

[0004] Therefore, it is an urgent problem to be solved by technical personnel in this field to provide a wheelset eccentric wear control system and method that can perform real-time control of eccentric wear during wheel operation, promptly detect and prevent further development of eccentric wear, effectively extend the life of the wheelset, and reduce the time of vehicle detention for maintenance, thereby improving transportation efficiency. Summary of the invention

[0005] The object of the present invention is to provide a wheelset eccentric wear control system and method, which has a simple structure and is safe, effective, reliable and easy to operate. It can control the eccentric wear in real time during the operation of the wheel, prevent the adverse consequences caused by further development of the eccentric wear, effectively extend the life of the wheelset and improve transportation efficiency.

[0006] Based on the above objectives, the technical solution provided by the present invention is as follows:

[0007] A wheel set eccentric wear control system, comprising: a detection device, a control device and an actuation device;

[0008] The control device is connected to the detection device and the actuation device respectively;

[0009] The detection device is used to obtain wheel data, rail data and contact data in real time;

[0010] The control device is used to determine whether the wheelset has eccentric wear based on the wheel data, rail data and contact data, and if so, control the actuation device to start;

[0011] The actuating device is used to apply a lateral force to the wheelset to free the wheelset from an eccentric wear state.

[0012] Preferably,

[0013] The control device is arranged inside the train body;

[0014] A mounting frame is provided under the train body;

[0015] The mounting frame is connected to the train body;

[0016] A set of wheel pairs is symmetrically arranged inside the mounting frame;

[0017] The detection device is arranged at the lower edge of the mounting frame and faces the bottom of the wheelset;

[0018] The actuating device is arranged on the mounting frame and is close to the side of the wheelset.

[0019] Preferably, the detection device comprises: a wheel flange contact detection component, a wheel parameter detection component, a rail section profile detection component and a bracket;

[0020] One end of the bracket is vertically arranged at the lower edge of the mounting frame;

[0021] The other end of the bracket is close to the wheelset;

[0022] The wheel rim contact detection component, the vehicle parameter detection component and the rail section profile detection component are arranged in sequence on the other end of the bracket.

[0023] Preferably, the control device comprises: a PLC and a controller;

[0024] The PLC is connected to the detection device and the controller respectively;

[0025] The PLC is used to determine whether the wheelset has eccentric wear based on the wheel data, rail data and contact data acquired by the detection device, and if so, send an opening command to the controller;

[0026] The controller is used to control the actuating device to start after receiving the start command.

[0027] Preferably, the actuating device is specifically: a horizontal actuator;

[0028] The horizontal actuator is provided with a telescopic arm;

[0029] When the horizontal actuator is in an open state, the telescopic arm abuts against the wheelset.

[0030] A method for controlling eccentric wear of a wheelset is implemented based on any of the above-mentioned eccentric wear control systems of a wheelset, and is characterized by comprising the following steps:

[0031] Obtain wheel data, rail data and contact data;

[0032] Determining whether eccentric wear occurs on the wheelset based on the wheel data, the rail data and the contact data;

[0033] If so, the actuator is controlled to open to free the wheelset from eccentric wear.

[0034] Preferably, judging whether eccentric wear occurs on a wheelset based on the wheel data, the rail data and the contact data comprises the following steps:

[0035] The wheel data includes: the diameter and profile of the left and right wheels;

[0036] The rail data includes: left and right rail profiles;

[0037] According to the contact data, first eccentric wear data of the left and right wheels are obtained;

[0038] According to the pre-stored standard wheel profile and the contour profiles of the left and right wheels, the wear amount and the wheel rim thickness at various positions of the left and right wheels are obtained;

[0039] According to the wheel rim thickness of the left and right wheels, it is determined whether the wheel rim thickness difference between the left and right wheels is greater than a preset difference. If so, the second eccentric wear data of the left and right wheels is obtained.

[0040] Preferably, after obtaining the second eccentric wear data of the left and right wheels, the method further includes the following steps:

[0041] According to the diameters of the left and right wheels, the contour profiles and the left and right rail profiles, the lateral displacement of the wheel flange of the eccentrically worn wheel when it contacts the rail at the minimum point in the rolling circle area and the movement displacement between the wheel spacing and the center line of the track are obtained;

[0042] Whether to control the actuating device to be turned on is determined according to the movement displacement, the first eccentric wear data of the left and right wheels, and the second eccentric wear data of the left and right wheels.

[0043] Preferably, the control actuation device is turned on to restore the wheelset to a normal state, specifically:

[0044] The actuating device is specifically a horizontal actuator;

[0045] The horizontal actuator is provided with a telescopic arm;

[0046] When the horizontal actuator is in an open state, the telescopic arm is extended to make the horizontal actuator contact with the back of the wheel;

[0047] Continue to extend the telescopic arm to apply lateral force to the wheelset to free the wheelset from eccentric wear;

[0048] The extension value of the telescopic arm is equal to the movement displacement.

[0049] The present invention discloses a wheel set eccentric wear control system, which is provided with a detection device, a control device and an actuating device; the control device is connected with the detection device and the actuating device respectively; during operation, the wheel data, rail data and contact data between the wheel and the rail are obtained in real time through the detection device, and the above data are transmitted to the control device; after receiving the above data, the control device determines whether the wheel set has eccentric wear according to the above data, and if no eccentric wear has occurred, no processing is required, and the above data is temporarily stored for future reference. If eccentric wear has occurred, the actuating device is controlled to be turned on, and the actuating device applies a lateral force to the wheel set, so that the wheel set in the eccentric wear state is transformed into a normal state.

[0050] Compared with the prior art, this case determines whether the wheelset is eccentrically worn by acquiring wheel data, rail data and contact data in real time. When the judgment result is yes, the control device drives the actuator to apply lateral force to the wheelset to make the wheelset out of the eccentric wear state, prevent the further development of eccentric wear, effectively extend the life of the wheelset and improve transportation efficiency.

[0051] The present invention also provides a wheelset eccentric wear control method, which solves the same technical problem as the wheelset eccentric wear control system, belongs to the same technical concept, and should have the same beneficial effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present application or the technical solutions in 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 only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A schematic structural diagram of a wheelset eccentric wear control system provided by an embodiment of the present invention;

[0054] Figure 2 A flow chart of a wheelset eccentric wear control method provided by an embodiment of the present invention;

[0055] Figure 3A flowchart of step S2 provided in an embodiment of the present invention;

[0056] Figure 4 This is a flowchart of step S3 provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] The embodiments of the present invention are written in a progressive manner.

[0059] The embodiment of the present invention provides a wheelset eccentric wear control system and method, which mainly solves the technical problem that in the prior art, the wheelset eccentric wear control measures are post-remedial measures after the eccentric wear occurs to a certain extent, and the wheelset eccentric wear state cannot be corrected in real time, resulting in a reduction in the service life of the wheelset.

[0060] A wheelset eccentric wear control system, comprising: a detection device 1, a control device 2 and an actuation device 3;

[0061] The control device 2 is connected to the detection device 1 and the actuation device 3 respectively;

[0062] Detection device 1, used to obtain wheel data, rail data and contact data in real time;

[0063] The control device 2 is used to determine whether the wheelset has eccentric wear according to the wheel data, rail data and contact data, and if so, control the actuation device 3 to start;

[0064] The actuating device 3 is used to apply a lateral force to the wheelset to free the wheelset from the eccentric wear state.

[0065] During actual use, the control device is connected to the detection device and the actuation device respectively. The detection device obtains wheel data, rail data and contact data in real time, and transmits the above data to the control device. The control device determines whether eccentric wear occurs on the wheelset based on the above data. If eccentric wear occurs on the wheelset, the actuation device is controlled to be turned on. After the actuation device is turned on, a lateral force is applied to the wheelset to make the wheelset out of the eccentric wear state.

[0066] Preferably,

[0067] The control device 2 is arranged inside the train body;

[0068] A mounting frame is provided under the train body;

[0069] The mounting frame 4 is connected to the train body;

[0070] A set of wheels 5 is symmetrically arranged inside the mounting frame 4;

[0071] The detection device 1 is arranged at the lower edge of the mounting frame 4 and faces the bottom of the wheelset 5;

[0072] The actuating device 3 is disposed on the mounting frame 4 and is close to the side of the wheelset 5 .

[0073] In actual use, the control device is set inside the train body, and a mounting frame connected to the train body is set below the train body. A set of wheelsets are symmetrically arranged inside the mounting frame; the detection device is set at the bottom edge of the mounting frame and faces the bottom of the wheelset; the actuating device is installed on the mounting frame and is close to the side of the wheelset. During operation, the wheel data, rail data and contact data of the wheelset are detected by the detection device set at the bottom edge of the mounting frame, and the above data are transmitted to the control device set inside the car body. The control device determines whether the wheelset has eccentric wear based on the relevant data obtained. If so, the actuating device set on the mounting frame is controlled to apply lateral force to the wheelset to make the wheelset out of the eccentric wear state.

[0074] Preferably, the detection device 1 comprises: a wheel flange contact detection component 11, a wheel parameter detection component 12, a rail section profile detection component 13 and a bracket 14;

[0075] One end of the bracket 14 is vertically arranged at the lower edge of the mounting frame 4;

[0076] The other end of the bracket 14 is close to the wheelset 5;

[0077] A wheel flange contact detection component 11, a vehicle parameter detection component 12 and a rail section profile detection component 13 are sequentially arranged on the other end of the bracket 14.

[0078] In actual use, the detection device is provided with a wheelset contact detection component, a wheel parameter detection component, a rail cross-section profile detection component and a bracket. One end of the bracket is vertically arranged at the lower edge of the mounting frame, and the other end is close to the wheelset. The other end of the bracket close to the wheelset is provided with a wheel flange contact detection component, a vehicle parameter detection component and a rail cross-section profile detection component in sequence. During operation, the wheel flange contact detection component, the wheel parameter detection component and the rail cross-section profile detection component provided on the other end of the bracket close to the wheelset work simultaneously to obtain contact data, wheel data and rail data, and transmit the obtained data to the control device in the vehicle body.

[0079] Preferably, the control device 2 includes: a PLC 21 and a controller 22;

[0080] PLC21 is connected to the detection device 1 and the controller 22 respectively;

[0081] PLC21, used to determine whether the wheelset 5 has eccentric wear according to the wheel data, rail data and contact data obtained by the detection device 1, and if so, send an opening command to the controller 22;

[0082] The controller is used to control the actuating device 3 to start after receiving the start command.

[0083] In actual use, the control device is provided with a PLC and a controller. The PLC is connected to the detection device and the controller respectively, and the controller is connected to the actuating device. During operation, after the PLC receives the wheel data, rail data and contact data detected and acquired by the detection device, it determines whether the wheelset has eccentric wear through calculation based on the calculation results. If the current wheelset has eccentric wear, the PLC sends an opening signal to the controller. After the controller receives the opening signal sent by the PLC, it controls the actuating device to start.

[0084] Preferably, the actuating device 3 is specifically: a horizontal actuator;

[0085] A telescopic arm is provided on the horizontal actuator;

[0086] When the horizontal actuator is in the open state, the telescopic arm abuts against the wheelset 5.

[0087] In actual use, the actuating device is specifically a horizontal actuator, on which a telescopic arm is provided. During operation, after the controller controls the horizontal actuator to start, the telescopic arm on the horizontal actuator extends horizontally, abuts against the wheelset, and applies a lateral force to the wheelset, so that the wheelset is free from the eccentric wear state.

[0088] A method for controlling eccentric wear of a wheelset is implemented based on any of the above-mentioned eccentric wear control systems of a wheelset, and is characterized by comprising the following steps:

[0089] S1. Obtain wheel data, rail data and contact data;

[0090] S2. Determine whether the wheelset has eccentric wear based on the wheel data, rail data and contact data;

[0091] S3. If yes, the actuator is controlled to start so as to free the wheelset from the eccentric wear state.

[0092] In step S1, wheel data, rail data and contact data are acquired through a detection device. In this embodiment, specifically:

[0093] The wheel flange contact detection component measures the contact data, including: whether the wheel flange of the wheelset is in contact with the rail. If the wheel flange of the left wheel of the wheelset is in contact with the rail, then IF contact_L =1,IF contact_R =0; if the left and right wheel flanges are not in contact with the rail, then IF contact_L=0,IF contact_R =0; if the right wheel flange of the wheelset comes into contact with the rail, then IF contact_L =0,IF contact_R =1;

[0094] The wheel parameter detection component measures the wheel data, including: left and right wheel diameter WD L , WD R 、Wheel profile WP L , WP R and wheelset lateral displacement y w ;

[0095] The rail profile detection component measures the rail data, including: the left and right rail profiles RP at the wheelset contact position L RP R .

[0096] In step S2, calculation is performed based on the wheel data, rail data and contact data, and based on the calculation result, it is determined whether the wheelset has eccentric wear;

[0097] In step S3, if the judgment result is yes, that is, the wheelset has undergone eccentric wear, the actuating device is controlled to start, and under the action of the actuating device, the wheelset is freed from the eccentric wear state.

[0098] Preferably, step S2 comprises the following steps:

[0099] Wheel data includes: diameter and profile of left and right wheels;

[0100] Rail data includes: left and right rail profiles;

[0101] A1. Obtain the first eccentric wear data of the left and right wheels according to the contact data;

[0102] A2. Obtain the wear amount and rim thickness at each position of the left and right wheels according to the pre-stored standard wheel profile and the profile of the left and right wheels;

[0103] A3. According to the rim thicknesses of the left and right wheels, determine whether the rim thickness difference between the left and right wheels is greater than a preset difference. If so, obtain the second eccentric wear data of the left and right wheels.

[0104] In step A1, based on the contact data, obtain IF contact_L , IF contact_R The specific vertical, that is, IF contact_L 0 or 1, IF contact_R is 1 or 0, thereby determining which of the left and right wheels is in contact with the rail, where IF contact_L and IF contact_R The first eccentric wear data of the left and right wheels;

[0105] In step A2, according to the pre-stored standard wheel profile WP st and the measured wheel profile WP L , WP R , calculate the wear D at each position of the wheel wear_L , D wear_R and the rim thickness W of the left and right wheels flange_L , W flange_R ;

[0106] D wear_i =WP st -WP i (i=L or R)

[0107] It should be noted that the wear amount is the value obtained by subtracting the measured wheel profile from the standard wheel profile; rim thickness: the rim thickness at a height of 10mm from the wheel profile reference point. The rim thickness can be measured directly, that is, by subtracting the horizontal coordinate.

[0108] In step A3, according to the wheel rim thickness W of the left and right wheels flange_L , W flange_R ,, calculate the difference in wheel rim thickness between the left and right wheels, if |W flange_L -W flange_R |≥0.5, the wheelset will experience eccentric wear, IF pianmo =1; otherwise, the wheel flange thickness difference is within the normal range, IF pianmo =0, wherein the preset difference is set to 0.5 in this embodiment; IF pianmo =0 is the second eccentric wear data of the left and right wheels.

[0109] Preferably, after step A3, the method further comprises the following steps:

[0110] A4. According to the diameters and profiles of the left and right wheels and the profiles of the left and right rails, obtain the lateral displacement of the wheel flange of the eccentrically worn wheel when it contacts the rail at the minimum point in the rolling circle area and the displacement between the wheel spacing and the track centerline;

[0111] A5. Determine whether to control the actuating device to be turned on based on the displacement, the first eccentric wear data of the left and right wheels, and the second eccentric wear data of the left and right wheels.

[0112] In step A4, according to the measured left and right wheel diameters WD L , WD R 、Wheel profile WP L , WP R and left and right rail profile RP L RP RAccording to the wheel-rail contact geometry theory and related algorithms, the contact geometry relationship between the wheel-rail and the rail is analyzed (the wheel set lateral displacement is -12mm~12mm, and the shaking angle is 0 degrees), and the distance W between the wheel rim and the rolling circle area of ​​the eccentrically worn wheel is calculated. flange_i (i=L or R) Transverse displacement y when the minimum point contacts the rail target , and calculate the displacement y that the wheelset needs to move toward the track centerline move ;

[0113] It should be noted that, according to the wheel-rail contact geometry theory and related algorithms, the contact geometry relationship is analyzed in this embodiment as follows: first, according to the wear curve, the position of the minimum point between the wheel rim of the eccentrically worn wheel and the rolling circle area, that is, the horizontal coordinate information, can be known. Then, the wheel-rail contact geometry algorithm can be used to continuously change the wheelset lateral displacement parameters and calculate the wheel-rail contact geometry relationship until the position of the eccentrically worn wheel can contact the rail. At this time, the wheelset lateral displacement is y ttarget .

[0114] In step A5, according to IF pianmo IF contact_L IF contact_R ,y move The size of these values ​​determines whether the control actuator is turned on;

[0115] It should be noted that if IF pianmo =1&IF contact_L =1 or IF pianmo =1&IF contact_R =1, the actuator needs to be turned on. pianmo =1&IF contact_L = 1, the telescopic arm on the left horizontal actuator extends horizontally, abuts against the wheelset, and the actuator extends further by y move ;If IF pianmo =1&IF contact_R = 1, the telescopic arm on the right horizontal actuator extends horizontally, abuts against the wheelset, and the actuator extends further by y move .

[0116] Preferably, step S3 is specifically:

[0117] The actuating device is specifically a horizontal actuator;

[0118] A telescopic arm is provided on the horizontal actuator;

[0119] B1. When the horizontal actuator is in the open state, the telescopic arm is extended so that the horizontal actuator abuts against the back of the wheel;

[0120] B2. Continue to extend the telescopic arm to apply lateral force to the wheelset to free the wheelset from eccentric wear;

[0121] Among them, the extension value of the telescopic arm is equal to the moving displacement.

[0122] In steps B1 to B2, the actuating device is specifically a horizontal actuator and a telescopic arm; when the horizontal actuator is turned on by the control device, the telescopic arm arranged on the horizontal actuator is extended, so that the horizontal actuator abuts against the back of the wheel, and the telescopic arm continues to be extended, and the extension amount is equal to y move When the elongation is reached, the horizontal actuator applies a lateral force to the wheelset through the telescopic arm, so that the wheelset is free from the eccentric wear state.

[0123] In the embodiments provided in the present application, it should be understood that the disclosed methods and systems can be implemented in other ways. The system embodiments described above are merely schematic. For example, the division of modules is only a logical function division. There may be other division methods in actual implementation, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0124] In addition, all functional modules in the embodiments of the present invention may be integrated into one processor, or each module may be a separate device, or two or more modules may be integrated into one device; each functional module in the embodiments of the present invention may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0125] A person of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by program instructions and related hardware. The aforementioned program instructions can be stored in a computer-readable storage medium. When the program instructions are executed, the steps of the above method embodiment are executed; and the aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a magnetic disk or an optical disk, and other media that can store program codes.

[0126] It should be understood that the use of "system", "device", "unit" and / or "module" in this application is only a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0127] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0128] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0129] If a flow chart is used in the present application, the flow chart is used to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, each step can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or a certain step or several steps of operations can be removed from these processes.

[0130] The above is a detailed introduction to a wheel set eccentric wear control system and method provided by the present invention. The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in the field, and the general principles defined in this article can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed in this article.

Claims

1. A wheelset eccentric wear control system, It is characterized in that include: Detection devices, control devices and actuation devices; The control device is connected to the detection device and the actuation device respectively; The detection device is used to obtain wheel data, rail data and contact data in real time; The control device is used to determine whether the wheelset has eccentric wear based on the wheel data, rail data and contact data, and if so, control the actuation device to start; The actuating device is used to apply a lateral force to the wheelset to make the wheelset escape from the eccentric wear state; The contact data includes: the contact status between the left and right wheel flanges and the rails, specifically: if the left wheel flange of the wheelset contacts the rails, then define , ; If the left and right wheel flanges are not in contact with the rail, then define , ; If the right wheel flange of the wheelset comes into contact with the rail, then define , ,in, and The first eccentric wear data of the left and right wheels; The wheel data includes: left and right wheel diameters , , wheel profile , and wheelset lateral displacement ; The rail data includes: the left and right rail profiles at the wheelset contact position , ; The control device is specifically used to, according to the pre-stored standard wheel profile and the measured wheel profile , , through the wear formula: , i = L or R, calculate the wear at each position of the wheel , , and obtain the rim thickness of the left and right wheels based on the height from the reference point of the wheel profile , ; The control device is also specifically used to adjust the wheel rim thickness of the left and right wheels according to the wheel rim thickness of the left and right wheels. , , calculate the difference in wheel rim thickness between the left and right wheels, if the difference in wheel rim thickness between the left and right wheels is greater than a preset difference, the wheelset has eccentric wear, ; Otherwise, the wheel rim thickness difference is within the normal range. ,in, The second eccentric wear data of the left and right wheels; The control device is also specifically used to, according to the measured left and right wheel diameters , , wheel profile , and left and right rail profiles , According to the wear curve, the horizontal coordinate information of the minimum point between the wheel rim and the rolling circle area of ​​the eccentrically worn wheel is obtained. Then, through the wheel-rail contact geometry algorithm, the wheel set lateral displacement parameters are continuously changed to calculate the wheel-rail contact geometry relationship until the horizontal coordinate information of the minimum point of the eccentrically worn wheel can contact the rail. At this time, the lateral displacement of the wheelset is , calculate the distance between the wheel rim and the rolling circle area of ​​the eccentrically worn wheel ,i=L or R, lateral displacement when the minimum point contacts the rail , and calculate the displacement that the wheelset needs to move toward the track centerline ; The control device is also specifically used to, according to , , , The size of the control actuator is used to determine whether to open the control actuator. & or & , then the actuator needs to be turned on.

2. The wheelset eccentric wear control system according to claim 1, It is characterized in that The control device is arranged inside the train body; A mounting frame is provided under the train body; The mounting frame is connected to the train body; A set of wheel pairs is symmetrically arranged inside the mounting frame; The detection device is arranged at the lower edge of the mounting frame and faces the bottom of the wheelset; The actuating device is arranged on the mounting frame and is close to the side of the wheelset.

3. The wheelset eccentric wear control system according to claim 2, It is characterized in that The detection device comprises: a wheel flange contact detection component, a wheel parameter detection component, a rail section profile detection component and a bracket; One end of the bracket is vertically arranged at the lower edge of the mounting frame; The other end of the bracket is close to the wheelset; The wheel rim contact detection component, the vehicle parameter detection component and the rail section profile detection component are arranged in sequence on the other end of the bracket.

4. The wheelset eccentric wear control system according to claim 2, It is characterized in that The control device comprises: a PLC and a controller; The PLC is connected to the detection device and the controller respectively; The PLC is used to determine whether the wheelset has eccentric wear based on the wheel data, rail data and contact data acquired by the detection device, and if so, send an opening command to the controller; The controller is used to control the actuating device to start after receiving the start command.

5. The wheelset eccentric wear control system according to claim 2, It is characterized in that The actuating device is specifically: a horizontal actuator; The horizontal actuator is provided with a telescopic arm; When the horizontal actuator is in an open state, the telescopic arm abuts against the wheelset.

6. A method for controlling eccentric wear of a wheelset, implemented based on the eccentric wear control system of any one of claims 1 to 5, It is characterized in that The steps include: Obtain wheel data, rail data and contact data; Determining whether eccentric wear occurs on the wheelset based on the wheel data, the rail data and the contact data; If yes, the actuating device is controlled to start so as to make the wheelset out of the eccentric wear state; The contact data includes: the contact status between the left and right wheel flanges and the rails, specifically: if the left wheel flange of the wheelset contacts the rails, then define , ; If the left and right wheel flanges are not in contact with the rail, then define , ; If the right wheel flange of the wheelset comes into contact with the rail, then define , ,in, and The first eccentric wear data of the left and right wheels; The wheel data includes: left and right wheel diameters , , wheel profile , and wheelset lateral displacement ; The rail data includes: the left and right rail profiles at the wheelset contact position , ; According to the pre-stored standard wheel profile and the measured wheel profile , , through the wear formula: , i = L or R, calculate the wear at each position of the wheel , , and obtain the rim thickness of the left and right wheels based on the height from the reference point of the wheel profile , ; According to the thickness of the wheel rims of the left and right wheels , , calculate the difference in wheel rim thickness between the left and right wheels, if the difference in wheel rim thickness between the left and right wheels is greater than a preset difference, the wheelset has eccentric wear, ; Otherwise, the wheel rim thickness difference is within the normal range. ,in, The second eccentric wear data of the left and right wheels; According to the measured left and right wheel diameters , , wheel profile , and left and right rail profiles , According to the wear curve, the horizontal coordinate information of the minimum point between the wheel rim and the rolling circle area of ​​the eccentrically worn wheel is obtained. Then, through the wheel-rail contact geometry algorithm, the wheel set lateral displacement parameters are continuously changed to calculate the wheel-rail contact geometry relationship until the horizontal coordinate information of the minimum point of the eccentrically worn wheel can contact the rail. At this time, the lateral displacement of the wheelset is , calculate the distance between the wheel rim and the rolling circle area of ​​the eccentrically worn wheel ,i=L or R, lateral displacement when the minimum point contacts the rail , and calculate the displacement that the wheelset needs to move toward the track centerline ; according to , , , The size of the control actuator is used to determine whether to open the control actuator. & or & , then the actuator needs to be turned on.

7. The method for controlling eccentric wear of wheelsets according to claim 6, It is characterized in that The control actuation device is turned on to restore the wheelset to a normal state, specifically: The actuating device is specifically a horizontal actuator; The horizontal actuator is provided with a telescopic arm; When the horizontal actuator is in an open state, the telescopic arm is extended to make the horizontal actuator contact with the back of the wheel; Continue to extend the telescopic arm to apply lateral force to the wheelset to free the wheelset from eccentric wear; The extension value of the telescopic arm is equal to the movement displacement.

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