Device and method for detecting axle load transfer of locomotive axle

Abstract

The invention provides a detection device and a detection method for axle load transfer of a locomotive axle, two ends of the locomotive axle are respectively provided with a suspension, and the detection device comprises a detection unit, a conversion unit and a calculation unit. The detection unit is used for detecting vertical displacement information of the primary suspension; the conversion unit is electrically connected with the detection unit and is used for converting the displacement information into an electric signal; and the calculation unit is electrically connected with the conversion unit and is used for calculating the axle load transfer amount of the locomotive axle according to the electric signal.

Description

Technical Field

[0001] The present application relates to the field of locomotives, and in particular to a device and method for detecting axle load transfer of locomotives. Background Art

[0002] Rail locomotives are the main equipment in the field of rail transit. During the operation of a locomotive, the traction force of the coupler of the locomotive and the traction force of the locomotive wheel circumference do not act at the same height, which will form a couple, resulting in changes and redistribution of the loads (i.e., axle loads) on the axles at different positions of the locomotive. This phenomenon is called the axle load transfer of the locomotive. Axle load transfer will cause problems such as unstable locomotive operation, increased wear, vibration, and noise. Therefore, it is necessary to detect the axle load transfer of the locomotive.

[0003] The traditional method for detecting axle load transfer is to replace the force-measuring wheel sets on each axle of the locomotive. When the locomotive exerts the maximum traction force, the change in the force of the force-measuring wheel sets on each axle is detected. In this way, it is necessary to make force-measuring wheel sets corresponding to the number of locomotive axles, and all the force-measuring wheel sets need to be calibrated, resulting in a long detection cycle. In addition, during detection, it is difficult to replace the force-measuring wheel sets. It is necessary to separate the car body from the bogie and disassemble the bogie, which not only requires special tooling, a large number of technical workers, but also requires special sites and related lifting equipment requirements for assembling the bogie and the whole vehicle, with extremely high costs, limited detection conditions, and extremely high detection difficulty. Summary of the Invention

[0004] The main purpose of the present application is to provide a detection device for axle load transfer of locomotive axles that does not require making special force-measuring wheel sets, does not require special tooling, does not require special sites and lifting equipment, has a short detection cycle, low detection costs, and is applicable to various types of locomotives.

[0005] Another main purpose of the present application is to provide a detection method for axle load transfer of locomotive axles with a simple detection method, simple operation, short detection cycle, accurate detection results, and capable of detecting locomotives with different suspension methods of traction motors and different operating states.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] According to one aspect of the present application, there is provided a detection device for axle load transfer of locomotive axles. One-end suspensions are respectively arranged at both ends of the locomotive axles, including:

[0008] A detection unit for detecting the vertical displacement information of the one-end suspensions;

[0009] A conversion unit electrically connected to the detection unit for converting the displacement information into an electrical signal;

[0010] A calculation unit, electrically connected to the conversion unit, for calculating the axle load transfer of the locomotive axle according to the electrical signal.

[0011] According to one embodiment of the present application, the detection device for the locomotive axle load transfer further includes:

[0012] A filtering unit, for filtering the electrical signal to remove noise, so that the electrical signal can accurately represent the displacement information.

[0013] According to one embodiment of the present application, the detection device for the locomotive axle load transfer further includes:

[0014] A display unit, the display unit being electrically connected to the calculation unit, for displaying the displacement information and the axle load transfer.

[0015] According to another aspect of the present application, the present application further provides a method for detecting the locomotive axle load transfer, using the above detection device for the locomotive axle load transfer, including the following steps:

[0016] Step S1: Detect the vertical displacement information of the primary suspension at both ends of the locomotive axle;

[0017] Step S2: Calculate the change in the axle load of the locomotive axle at the primary suspension according to the displacement information;

[0018] Step S3: According to different installation methods of the traction motor, different calculation methods are used to calculate the axle load transfer of the axle.

[0019] According to one embodiment of the present application, in step S3, when the traction motor is installed in a semi - suspended manner, the axle load transfer is calculated from the change in the axle load of the locomotive axle at the primary suspension at both ends of the axle and the force exerted by the traction motor on the axle.

[0020] According to one embodiment of the present application, when the traction motor is in the forward position, the axle load transfer is equal to the difference between the sum of the changes in the axle load of the locomotive axle at the primary suspension at both ends of the axle and the force exerted by the traction motor on the axle.

[0021] According to one embodiment of the present application, when the traction motor is in the reverse position, the axle load transfer is equal to the sum of the changes in the axle load of the locomotive axle at the primary suspension at both ends of the axle and the force exerted by the traction motor on the axle.

[0022] According to one embodiment of the present application, the traction motor is connected to the frame of the locomotive bogie by a suspension rod, and the force exerted by the traction motor on the axle is defined as F M , then F M = F X R / S, where F Xis the traction force of the locomotive, R is the radius of the locomotive wheel, and S is the distance between the suspension rod and the axis of the axle.

[0023] According to one embodiment of the present application, in step S3, when the traction motor is mounted in a suspended manner on the frame, the axle load transfer amount is equal to the sum of the changes in the axle loads of the locomotive axle at the primary suspension points at both ends of the axle.

[0024] According to one embodiment of the present application, the method for detecting the axle load transfer of a locomotive axle further includes:

[0025] Step S4: Calculate the adhesion utilization rate of the locomotive based on the axle load transfer amount.

[0026] As can be seen from the above technical solutions, the advantages and positive effects of the detection device for the axle load transfer of a locomotive axle proposed in the present application are as follows:

[0027] The detection device for the axle load transfer of a locomotive axle proposed in the present application detects the axle load transfer of the locomotive axle by setting a detection unit for detecting the vertical displacement information of the primary suspension and calculating the detected displacement information, without the need to manufacture a special force-measuring wheel set, special tooling, special site, and hoisting equipment.

[0028] The detection device for the axle load transfer of a locomotive axle proposed in the present application can achieve accurate and objective detection data by setting a conversion unit that converts the displacement information into an electrical signal, and can truly and objectively reflect the degree and trend of the axle load transfer of the locomotive axle.

[0029] The detection device for the axle load transfer of a locomotive axle proposed in the present application includes a calculation unit electrically connected to the conversion unit, which is used to calculate the axle load transfer amount of the locomotive axle based on the electrical signal, with accurate calculation results, a short detection period, and low detection costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By considering the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings, various objectives, features, and advantages of the present application will become more apparent. The drawings are only exemplary diagrams of the present application and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0031] Figure 1 is a schematic diagram of the detection device for the axle load transfer of a locomotive axle of the present application.

[0032] Figure 2 is a schematic diagram of the in-line structure of the axle-suspended traction motor in the method for detecting the axle load transfer of a locomotive axle of the present application.

[0033] Figure 3It is a schematic diagram of the inverted structure of the axle-hung traction motor in the method for detecting the axle load transfer of the locomotive axle of the present application.

[0034] Figure 4 It is a schematic diagram of the installation position of the displacement sensor of the detection device for the axle load transfer of the locomotive axle of the present application.

[0035] The description of the reference numerals is as follows:

[0036] 10 - Detection unit;

[0037] 20 - Conversion unit;

[0038] 30 - Calculation unit;

[0039] 40 - Filter unit;

[0040] 50 - Display unit;

[0041] 100 - Axle;

[0042] 101 - Wheel;

[0043] 102 - Primary suspension;

[0044] 200 - Traction motor;

[0045] 201 - Suspension rod;

[0046] 300 - Gearbox;

[0047] 400 - Displacement sensor;

[0048] 500 - Frame. Detailed implementation manners

[0049] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0050] In the following description of different exemplary embodiments of the present invention, reference is made to the accompanying drawings which form a part of the present invention and in which are shown, by way of example, different exemplary structures, systems and steps by which various aspects of the present invention may be implemented. It is to be understood that other specific arrangements of components, structures, exemplary devices, systems and steps may be used and structural and functional modifications may be made without departing from the scope of the present invention. Also, although terms such as "above", "between", "within" etc. may be used in this specification to describe different exemplary features and elements of the present invention, these terms are used herein for convenience only, for example, in accordance with the orientation of the examples described in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure to fall within the scope of the present invention.

[0051] It will be understood that the terms "comprising" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product or apparatus that comprises a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or components inherent to these processes, methods, products or apparatuses.

[0052] Relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element, as shown in the figures. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one figure is flipped, an element described as "lower" or "bottom" of other elements will be oriented "upper" or "top" of other elements. Thus, the exemplary term "lower" may include the orientations of "lower" and "upper", and the term "bottom" may include the orientations of "bottom" and "top", depending on the specific orientation of the figure. Similarly, if the device in one figure is flipped, an element described as "lower" or "bottom" of other elements will be oriented as "upper" or "top" of other elements. Thus, the exemplary terms "bottom" or "below" may include the orientations of upper and lower.

[0053] The rail locomotive includes a bogie and a wheel set. The wheel set is connected by an axle and is mounted on the bogie of the locomotive through a frame. For vibration damping, primary suspensions are respectively arranged at both ends of the locomotive axle, and the primary suspensions are connected to the frame. The locomotive wheels are connected with traction motors for providing power to the wheels to drive the locomotive to move forward and backward.

[0054] Refer to Figures 1 to 4, which representatively shows a detection device for axle load transfer of locomotive axle 100 of the present application, including a detection unit 10, a conversion unit 20, and a calculation unit 30. The detection unit 10 is used to detect the vertical displacement information of the primary suspension 102. The conversion unit 20 is electrically connected to the detection unit 10 and is used to convert the displacement information into an electrical signal. The calculation unit 30 is electrically connected to the conversion unit 20 and is used to calculate the axle load transfer amount of the locomotive axle 100 according to the electrical signal.

[0055] The detection device for axle load transfer of locomotive axle 100 of the present application detects the axle load transfer of locomotive axle 100 by setting a detection unit 10 for detecting the vertical displacement information of the primary suspension 102 and calculating the detected displacement information, without the need to manufacture a special force-measuring wheel set, special tooling, special site, and hoisting equipment.

[0056] The detection device for axle load transfer of locomotive axle 100 proposed by the present application can achieve accurate and objective detection data by setting a conversion unit 20 that converts displacement information into an electrical signal, and can truly and objectively reflect the degree and trend of axle load transfer of locomotive axle 100.

[0057] The detection device for axle load transfer of locomotive axle 100 proposed by the present application includes a calculation unit 30 electrically connected to the conversion unit 20, which is used to calculate the axle load transfer amount of locomotive axle 100 according to the electrical signal, with accurate calculation results, short detection period, and low detection cost.

[0058] Among them, the detection unit 10 includes a displacement sensor 400, refer to Figure 4 , the displacement sensor 400 is arranged between the primary suspension 102 and the frame 500 and is connected to the axle 100. The primary suspension 102 usually adopts a spring structure and can also be called a primary spring. The displacement sensor 400 detects the vertical displacement information of the primary suspension 102. The conversion unit 20 includes a transmission device and a data acquisition instrument. The transmission device transmits the displacement information to the data acquisition instrument, and the data acquisition instrument stores the real-time displacement information detected by the displacement sensor 400 and converts the displacement information into an electrical signal. The calculation unit 30 mainly includes a computer, such as a CPU, MCU, MPU, etc. The calculation unit 30 receives the electrical signal and calculates the electrical signal to obtain the axle load transfer amount of the locomotive.

[0059] In this embodiment, the detection device for axle load transfer of locomotive axle 100 further includes a filtering unit 40, which is used to filter the electrical signal and remove noise so that the electrical signal can accurately express the displacement information. The filtering unit 40 can be a filter, and the filter filters the electrical signal with too high frequency to ensure the accuracy of the data.

[0060] In this embodiment, the detection device for axle load transfer of the locomotive axle 100 further includes a display unit 50. The display unit 50 is electrically connected to the calculation unit 30 and is used to display the displacement information and the axle load transfer amount. The display unit 50 is mainly a display, and a displacement interface and an axle load transfer interface are set on the display interface. The displacement interface is used to display the displacement information detected by the displacement sensor 400, and the axle load transfer interface is used to display the axle load transfer amount of the locomotive. In some other embodiments, two windows can also be set on one display interface, which are respectively used to display the displacement and the axle load transfer.

[0061] See Figures 1 to 4 , this application also provides a detection method for axle load transfer of the locomotive axle 100. Using the above detection device for axle load transfer of the locomotive axle 100, the method includes the following steps:

[0062] Step S1: Detect the vertical displacement information of the primary suspension 102 at both ends of the locomotive axle 100;

[0063] Step S2: Calculate the change amount of the axle load of the locomotive axle 100 at the primary suspension 102 according to the displacement information;

[0064] Step S3: According to different installation methods of the traction motor 200, different calculation methods are used to calculate the axle load transfer amount of the axle 100.

[0065] The detection method for axle load transfer of the locomotive axle 100 in this application uses the detected vertical displacement information of the primary suspension 102 to calculate the change amount of the axle load of the locomotive axle 100, and then combines the influencing factors of the traction motor 200 on the axle load of the locomotive axle 100 to finally calculate the axle load transfer amount of the locomotive axle 100. The detection method is simple, the calculation is convenient, the detection operation is not complicated, the detection result is reliable, the calculation result is accurate, and it can truly and objectively reflect the trend and the axle load transfer of the locomotive axle 100.

[0066] The detection method for axle load transfer of the locomotive axle 100 in this application can be applied to the axle load transfer detection of various types of locomotives, including the detection of various types of axle-hung locomotives and frame-hung locomotives, avoiding the need to manufacture special force-measuring wheel sets for each type of locomotive, shortening the detection cycle, and reducing the detection cost.

[0067] In this embodiment, see Figures 2 to 3 , in step S3, when the traction motor 200 is installed in an axle-hung manner, the axle load transfer amount is calculated from the change amount of the axle load of the locomotive axle 100 at the primary suspension 102 at both ends of the axle 100 and the acting force of the traction motor 200 on the axle 100.

[0068] When the traction motor 200 is mounted in an axle-hung manner, the traction motor 200 is suspended from the locomotive axle 100. The traction motor 200 drives the axle 100 to rotate through a transmission mechanism such as a gearbox 300, thereby driving the wheels 101 to rotate and making the locomotive move forward. Therefore, the traction motor 200 can apply a torque on the axle 100 through the transmission mechanism, thereby generating a force on the axle 100.

[0069] In this embodiment, the traction motor 200 is connected to the frame 500 of the locomotive bogie by a hanger rod 201. Define the force of the traction motor 200 on the axle 100 as F M , then F M = F X R / S, where F X is the traction force of the locomotive, R is the radius of the locomotive wheel 101, and S is the distance between the hanger rod 201 and the axis of the axle 100.

[0070] In this embodiment, referring to Figure 2 , when the traction motor 200 is arranged in a forward position, the axle load transfer amount is equal to the difference between the sum of the changes in the axle load of the locomotive axle 100 at the primary suspension 102 at both ends of the axle 100 and the force of the traction motor 200 on the axle 100.

[0071] In the forward arrangement, the rotation axis of the motor is consistent with the driving direction of the vehicle, that is, the motor axis is the same as the rotation direction of the wheels 101. This installation method enables the torque of the motor to be directly transmitted to the wheels 101, with relatively high transmission efficiency, but it is necessary to solve the problems of motor heat dissipation and vibration.

[0072] Among them, when the motor is arranged in a forward position, the calculation formula for axle load transfer is as follows:

[0073] ΔP = F SL + F SR - F M = K Z (Z SL + Z SR ) - F X R / S

[0074] Among them, the physical quantities represented by the parameters in the formula are:

[0075] ΔP - Axle load transfer amount;

[0076] F SL - The change in weight on the left primary suspension 102. When the weight borne by the primary suspension 102 increases, the sign of F SL is a positive sign, and when it decreases, the sign of F SL is a negative sign;

[0077] F SR——The change in weight on the left - hand side primary suspension 102. When the weight borne by the primary suspension 102 increases, F SR has a positive sign, and when it decreases, F SR has a negative sign;

[0078] F M ——The force exerted by the traction motor 200 on the axle 100;

[0079] K Z ——The vertical stiffness of the primary suspensions 102 on the left and right sides;

[0080] Z SL ——The change in the vertical displacement of the left - hand side primary suspension 102. A downward displacement indicates an increase in the weight borne by the primary suspension 102;

[0081] Z SR ——The change in the vertical displacement of the right - hand side primary suspension 102. A downward displacement indicates an increase in the weight borne by the primary suspension 102;

[0082] F X ——The tractive force of the locomotive;

[0083] R - The radius of the wheel 101;

[0084] S - The distance from the hanger 201 to the axis of the axle 100.

[0085] In this embodiment, referring to Figure 3 , when the traction motor 200 is installed in reverse, the axle - load transfer amount is equal to the sum of the changes in the axle - load of the locomotive axle 100 at the primary suspensions 102 at both ends of the axle 100 and the sum of the forces exerted by the traction motor 200 on the axle 100.

[0086] In the reverse installation, the rotation axis of the motor is opposite to the direction of vehicle travel, that is, the motor axis is opposite to the rotation direction of the wheel 101. This installation method can better balance the weight distribution of the vehicle and reduce vibration, but the transmission efficiency is relatively low, and gears or universal shafts are required to convert the torque direction.

[0087] Among them, when the motor is installed in reverse, the calculation formula for axle - load transfer is as follows:

[0088] ΔP = F SL +F SR +F M = K Z (Z SL +Z SR )+F X R / S

[0089] Among them, the physical quantities represented by the parameters in the formula are:

[0090] ΔP - The axle - load transfer amount;

[0091] F SL —— The change in weight on the left - hand side of the first - stage suspension 102. When the weight borne by the first - stage suspension 102 increases, F SL has a positive sign, and when it decreases, F SL has a negative sign;

[0092] F SR —— The change in weight on the left - hand side of the first - stage suspension 102. When the weight borne by the first - stage suspension 102 increases, F SR has a positive sign, and when it decreases, F SR has a negative sign;

[0093] F M —— The force exerted by the traction motor 200 on the axle 100;

[0094] K Z —— The vertical stiffness of the first - stage suspensions 102 on the left and right sides;

[0095] Z SL —— The change in the vertical displacement of the left - hand side of the first - stage suspension 102. A downward displacement indicates an increase in the weight borne by the first - stage suspension 102;

[0096] Z SR —— The change in the vertical displacement of the right - hand side of the first - stage suspension 102. A downward displacement indicates an increase in the weight borne by the first - stage suspension 102;

[0097] F X —— The tractive force of the locomotive;

[0098] R - The radius of the wheel 101;

[0099] S - The distance from the suspension rod 201 to the axis of the axle 100.

[0100] In this embodiment, in step S3, when the traction motor 200 is mounted in a suspended - type manner, the axle - load transfer amount is equal to the sum of the changes in the axle - load of the locomotive axle 100 at the first - stage suspensions 102 at both ends of the axle 100.

[0101] Among them, the traction motor 200 is mounted in a suspended - type manner, which means that the traction motor 200 is mounted on the frame 500 and the traction motor 200 does not exert a significant force on the locomotive axle 100. Therefore, when the motor is mounted in a suspended - type structure, the calculation formula for axle - load transfer is as follows:

[0102] ΔP = F SL + F SR = K Z (Z SL + Z SR )

[0103] Among them, the physical quantities represented by the parameters in the formula are as follows:

[0104] ΔP——Axle load transfer amount;

[0105] F SL ——Change in weight on the left primary suspension 102. When the weight borne by the primary suspension 102 increases, the sign of F SL is positive, and when it decreases, the sign of F SL is negative;

[0106] F SR ——Change in weight on the left primary suspension 102. When the weight borne by the primary suspension 102 increases, the sign of F SR is positive, and when it decreases, the sign of F SR is negative;

[0107] K Z ——Vertical stiffness of the primary suspensions 102 on the left and right sides;

[0108] Z SL ——Change in vertical displacement of the left primary suspension 102. A downward displacement indicates an increase in the weight borne by the primary suspension 102;

[0109] Z SR ——Change in vertical displacement of the right primary suspension 102. A downward displacement indicates an increase in the weight borne by the primary suspension 102.

[0110] In this embodiment, the method for detecting the axle load transfer of the locomotive axle 100 further includes: Step S4: Calculate the adhesion utilization rate of the locomotive according to the axle load transfer amount. The calculation formula for the adhesion utilization rate of the locomotive is as follows:

[0111]

[0112] Among them, η represents the adhesion utilization rate of the locomotive, P represents the nominal axle load, and ΔP represents the axle load transfer amount.

[0113] The above is a detailed description of several exemplary embodiments of the detection device and detection method for the axle load transfer of the locomotive axle 100 proposed in this application. The following will describe in detail the usage process of the detection device for the axle load transfer of the locomotive axle 100 proposed in this application in combination with the detection method for the axle load transfer proposed in this application.

[0114] Combined with the attached Figures 1 to 4, a displacement sensor 400 is provided at the connection between the primary suspension 102 of the locomotive axle 100 and the frame 500. When the locomotive is moving, the displacement sensor 400 detects the displacement information at this location in real time, and transmits the detected displacement information to a data acquisition instrument through a transmission device. The data acquisition instrument stores the real-time displacement information detected by the displacement sensor 400 and converts the displacement information into an electrical signal. The electrical signal is filtered by a filtering unit 40 to remove electrical signals with too high frequencies, and then transmitted to a computer. After calculation by the computer, the calculation result is displayed on a display unit 50. The display unit 50 is mainly a display, and a displacement interface and an axle load transfer interface are set on the display interface. The displacement interface is used to display the displacement information detected by the displacement sensor 400, and the axle load transfer interface is used to display the axle load transfer amount of the locomotive.

[0115] In summary, the detection device for the axle load transfer of the locomotive axle proposed in this application includes a detection unit, a conversion unit, and a calculation unit. Among them, the detection unit is used to detect the vertical displacement information of the primary suspension. By setting a detection unit for detecting the vertical displacement information of the primary suspension and calculating the detected displacement information to detect the axle load transfer of the locomotive axle, it is not necessary to manufacture a special force measuring wheel set, and there is no need for special tooling, special site, and hoisting equipment.

[0116] The conversion unit is electrically connected to the detection unit and is used to convert the displacement information into an electrical signal. By setting a conversion unit that converts the displacement information into an electrical signal, accurate and objective detection data can be achieved, and it can truly and objectively reflect the degree of axle load transfer and the trend of axle load transfer of the locomotive axle. The calculation unit is electrically connected to the conversion unit and is used to calculate the axle load transfer amount of the locomotive axle according to the electrical signal. The calculation result is accurate, the detection period is short, and the detection cost is low.

[0117] The detection method for the axle load transfer of the locomotive axle provided in this application uses the detected vertical displacement information of the primary suspension to calculate the change amount of the axle load of the locomotive axle, and then combines the influencing factors of the traction motor on the axle load of the locomotive axle to finally calculate the axle load transfer amount of the locomotive axle. The detection method is simple, the calculation is easy, the detection operation is not complicated, the detection result is reliable, the calculation result is accurate, and it can truly and objectively reflect the trend of axle load transfer and the axle load transfer of the locomotive axle.

[0118] The detection method for the axle load transfer of the locomotive axle in this application can be applied to the detection of axle load transfer of various types of locomotives, including the detection of various types of axle-hung locomotives and frame-hung locomotives, avoiding the need to manufacture a special force measuring wheel set for each type of locomotive and shortening the detection period.

[0119] It can be understood that the various embodiments / implementation manners provided in this application can be combined with each other without contradiction, and no further examples will be given here.

[0120] In the above exemplary embodiments, the detection device and method for axle load transfer of a locomotive proposed in this application are described by taking an application to a rail locomotive as an example. It is easy for those skilled in the art to understand that, in order to apply the relevant designs of this application to other types of locomotives, various modifications, additions, substitutions, deletions, or other changes are made to the specific embodiments, and these changes are still within the scope of the principle of the detection device and method for axle load transfer of the locomotive proposed in this application.

[0121] It should be noted here that the detection device and method for axle load transfer of a locomotive shown in the drawings and described in this specification are only a few examples of the many detection devices and methods for axle load transfer of a locomotive that can adopt the principle of this application. It should be clearly understood that the principle of this application is by no means limited to any details or any components of the detection device and method for axle load transfer of a locomotive shown in the drawings or described in this specification.

[0122] In the embodiments, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "plurality" means two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments can be understood according to specific circumstances.

[0123] The above has described and / or illustrated in detail the exemplary embodiments of the detection device and method for axle load transfer of the locomotive proposed in this application. However, the embodiments of this application are not limited to the specific embodiments described here. On the contrary, each component and / or step of each embodiment can be used independently and separately from the other components and / or steps described here. Each component and / or each step of one embodiment can also be combined with the other components and / or steps of other embodiments. When introducing the elements / components / etc. described and / or illustrated here, terms such as "a", "one", and "the above" are used to indicate the existence of one or more elements / components / etc.

[0124] Embodiments of the present application are not limited to the specific embodiments described herein. On the contrary, the components of each embodiment can be used independently and separately from the other components described herein. Each component of one embodiment can also be used in combination with other components of other embodiments. In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0125] The above are only the preferred embodiments of the embodiments of the present application and are not used to limit the embodiments of the present application. For those skilled in the art, various changes and modifications can be made to the embodiments of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included within the protection scope of the embodiments of the present application.

Claims

1. A detection device for axle load transfer of a locomotive axle, wherein primary suspensions are respectively arranged at both ends of the locomotive axle, characterized in that Comprising: A detection unit for detecting the vertical displacement information of the primary suspension; A conversion unit electrically connected to the detection unit for converting the displacement information into an electrical signal; A calculation unit electrically connected to the conversion unit for calculating the axle load transfer amount of the locomotive axle according to the electrical signal.

2. The detecting device for axle load transfer of a locomotive axle according to claim 1, characterized in that, It further comprises: A filtering unit for filtering the electrical signal to remove noise so that the electrical signal can accurately represent the displacement information.

3. The detection device for axle load transfer of a locomotive axle as claimed in claim 1 or 2, characterized in that, It further comprises: A display unit electrically connected to the calculation unit for displaying the displacement information and the axle load transfer amount.

4. A method for detecting the axle load transfer of a locomotive axle, which uses the detection device for the axle load transfer of a locomotive axle according to any one of claims 1-3, characterized in that, Including the following steps: Step S1: Detect the vertical displacement information of the primary suspension at both ends of the locomotive axle; Step S2: Calculate the change amount of the locomotive axle load at the primary suspension according to the displacement information; Step S3: According to different installation methods of the traction motor, different calculation methods are used to calculate the axle load transfer amount of the axle.

5. The detection method for axle load transfer of locomotive axles according to claim 4, characterized in that, In step S3, when the traction motor adopts the axle-hung installation method, the axle load transfer amount is calculated from the change amount of the locomotive axle load at the primary suspension at both ends of the axle and the force exerted by the traction motor on the axle.

6. The detection method for axle load transfer of locomotive axles according to claim 5, characterized in that, When the traction motor is arranged in the forward direction, the axle load transfer amount is equal to the difference between the sum of the change amounts of the locomotive axle load at the primary suspension at both ends of the axle and the force exerted by the traction motor on the axle.

7. The detection method for axle load transfer of locomotive axles according to claim 5, characterized in that, When the traction motor is arranged in the reverse direction, the axle load transfer amount is equal to the sum of the change amounts of the locomotive axle load at the primary suspension at both ends of the axle and the force exerted by the traction motor on the axle.

8. The detection method for axle load transfer of a locomotive axle as described in claim 4, wherein the traction motor is connected to the frame of the locomotive bogie by a suspension rod, characterized in that, Define the force exerted by the traction motor on the axle as F M , then F M = F X R / S, where F X is the traction force of the locomotive, R is the radius of the locomotive wheel, and S is the distance between the suspension rod and the axle axis.

9. The detection method for axle load transfer of locomotive axles according to claim 4, characterized in that, In step S3, when the traction motor adopts the frame-hung installation method, the axle load transfer amount is equal to the sum of the change amounts of the locomotive axle load at the primary suspension at both ends of the axle.

10. The detection method for axle load transfer of a locomotive axle according to any one of claims 4 to 9, characterized in that, It further comprises: Step S4: Calculate the adhesion utilization rate of the locomotive according to the axle load transfer amount.

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