Wheel-rail force measuring device and measuring system

Abstract

The present application relates to the field of rail transit equipment detection technology, and in particular to a wheel-rail force measuring device and measurement system. The wheel-rail force measuring device includes a first rotating part, a second rotating part, a collection assembly, and a drive assembly. The first rotating part and the second rotating part are arranged relative to the collection assembly along a first direction. When the object to be detected is set on the wheel-rail force measuring device, the first of the two wheels cooperates with the first rotating part, and the second of the two wheels cooperates with the second rotating part. The drive assembly is respectively connected to the first rotating part and the second rotating part to drive the first rotating part and the second rotating part to rotate around an axis extending along the first direction. The wheel-rail force measuring device and measurement system provided by the present application avoid changing or destroying the original structure of the object to be detected, improve test accuracy, reduce the amount of preparatory work for the wheel-rail force detection device, effectively improve test efficiency, and reduce detection costs.

Description

Technical Field

[0001] The present application relates to the technical field of rail transit equipment detection, and in particular to a wheel-rail force measurement device and a measurement system. Background Art

[0002] Wheel-rail contact force, also known as wheel-rail force, refers to the contact force between the wheels and rails during train operation. Wheel-rail force is divided into three categories: lateral force, vertical force, and tangential force. Vertical force supports the wheelset, lateral force is evident during steering, and tangential force affects the train's forward motion. Lateral and vertical forces significantly affect the likelihood of derailment and wheelset fatigue. Therefore, measuring wheel-rail force on rail transportation equipment is a crucial means of understanding its operation and a crucial basis for ensuring its safe operation.

[0003] The current methods for detecting wheel-rail forces generally include axle measurement and wheel measurement. In both axle measurement and wheel measurement, a wheel-rail force acquisition unit is set on the object to be tested (such as a bogie or a vehicle body) so that the wheel-rail force of the object to be tested can be monitored in real time as the object to be tested moves during the test. This requires the tester to perform a large amount of preparatory work on the object to be tested before the wheel-rail force test. For example, before the test, a force-measuring wheelset or force-measuring axle that matches the object to be tested is designed and manufactured (a force-measuring wheelset refers to a wheelset with a wheel-rail force acquisition unit, and a force-measuring axle refers to an axle with a wheel-rail force acquisition unit) and the force-measuring wheelset or force-measuring axle is replaced with the object to be tested; for example, a wheel-rail force acquisition unit is set on the wheelset and / or axle of the object to be tested (usually, during the setting process, the object to be tested needs to be machined, such as drilling).

[0004] However, as mentioned above, current wheel-rail force measurement methods require extensive and time-consuming preparatory work. Setting up the wheel-rail force collection unit often requires modifications (such as replacing the force measuring wheelset or axle) or damage (such as machining the object) to the original structure of the object being measured. This results in low test efficiency and high testing costs, and the accuracy of wheel-rail force measurement is significantly affected by this preparatory work. Summary of the Invention

[0005] The purpose of the present application is to provide a wheel-rail force measuring device and a measuring system, so as to solve, to a certain extent, the technical problems in the prior art of detecting wheel-rail force, such as the huge amount of preparatory work and long time consumption, the need to change or destroy the original structure of the object to be detected during the process of setting up the wheel-rail force acquisition part, low test efficiency, high test cost, and the fact that the wheel-rail force detection accuracy is greatly affected by the preparatory work.

[0006] According to a first aspect of the present application, a wheel-rail force measuring device is provided for measuring the wheel-rail force exerted on an object to be detected during operation. The object to be detected includes two wheels arranged opposite to each other in a first direction. When the object to be detected is in operation, the two wheels are respectively arranged on two tracks arranged opposite to each other. The wheel-rail force measuring device includes a first rotating portion, a second rotating portion, a collection assembly, and a drive assembly. The first rotating portion and the second rotating portion are both arranged opposite to the collection assembly in the first direction, so that the wheel-rail force exerted on the first rotating portion and the second rotating portion is collected by the collection assembly.

[0007] When the object to be detected is placed on the wheel-rail force measuring device, the first of the two wheels cooperates with the first rotating part, and the second of the two wheels cooperates with the second rotating part. The driving assembly is respectively connected to the first rotating part and the second rotating part to drive the first rotating part and the second rotating part to rotate around an axis extending along the first direction, so as to simulate the two tracks.

[0008] Preferably, there are two collecting components, the first rotating part is provided at one of the two collecting components, and the second rotating part is provided at the other of the two collecting components.

[0009] Preferably, for any of the collecting components, the collecting component includes a collecting portion and a holding portion connected to each other, and the first rotating portion and the second rotating portion are both provided on the collecting component via the corresponding holding portion.

[0010] Preferably, for any of the collection components, the collection component further includes a supporting platform and a sensing platform arranged opposite to each other along a second direction, the collection portion extends along the second direction, the collection portion is arranged between the supporting platform and the sensing platform, the holding portion is arranged on a side of the sensing platform away from the collection portion, and the second direction is perpendicular to the first direction.

[0011] Preferably, it further comprises a support assembly, the support assembly comprising a slide groove extending along the first direction, and the supporting platform of any one of the collection assemblies is slidably connected to the slide groove.

[0012] Preferably, it further includes a driving shaft, the first rotating part and the second rotating part are coaxially arranged on the driving shaft, and the driving assembly is connected to the first rotating part and the second rotating part via the driving shaft.

[0013] Preferably, for any of the collection components, there are multiple collection parts, and the multiple collection parts are distributed on the sensing platform.

[0014] Preferably, for any of the collection components, the number of the collection parts is 4, and the 4 collection parts are arranged on the sensing platform in a 2×2 matrix structure.

[0015] Preferably, the first rotating part and the second rotating part are both rail wheels;

[0016] The retaining portion is a bearing;

[0017] The acquisition unit is a three-component sensor.

[0018] According to the second aspect of the present application, a measurement system is provided, comprising the wheel-rail force measuring device described in any of the above technical solutions, and thus having all the beneficial technical effects of the wheel-rail force measuring device, which will not be described in detail here.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] The wheel-rail force measuring device provided by the present application uses a first rotating portion and a second rotating portion driven by a driven assembly to rotate about an axis extending along the first direction to simulate two tracks when the object to be tested is in a running state. In other words, the rolling motion of the first and second rotating portions relative to the wheel replaces the rolling motion of the wheel relative to the track, effectively reducing the range of motion of the object to be tested during the testing process. This allows the wheel-rail force collection portion (i.e., the collection assembly) of the wheel-rail force testing device to be transferred from the object to be tested to the first and second rotating portions. On the one hand, this effectively avoids changing or destroying the original structure of the object to be tested during the process of setting the wheel-rail force collection portion, making the test results more closely aligned with the actual situation of the object to be tested, improving test accuracy, and avoiding the occurrence of phenomena where the test accuracy is affected by the setting position of the wheel-rail force collection portion. On the other hand, this effectively reduces the preparatory work for the wheel-rail force testing device (i.e., avoiding the process of setting the wheel-rail force collection portion on the object to be tested before each wheel-rail force test), effectively improving test efficiency, and reducing testing costs.

[0021] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1A schematic structural diagram of the wheel-rail force measurement device provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the axonometric structure of the wheel-rail force measuring device provided in an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the axonometric structure of the acquisition component of the wheel-rail force measurement device provided in an embodiment of the present application.

[0026] Reference numerals:

[0027] 110 - first track wheel; 120 - second track wheel; 210 - holding part; 211 - bearing seat; 220 - collection part; 230 - sensing platform; 240 - support platform; 300 - drive shaft assembly; 310 - connecting shaft; 320 - rotating shaft; 400 - test platform; 410 - slide; 500 - object to be detected; 510 - wheel.

[0028] F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0029] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0030] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0031] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] Refer to the following Figures 1 to 3 The present invention describes a wheel-rail force measurement device and a measurement system according to some embodiments of the present application.

[0035] See also Figures 1 to 3 As shown, an embodiment of the first aspect of the present application provides a wheel-rail force measurement device for measuring the wheel-rail force exerted on an object to be detected 500 during operation. The object to be detected 500 includes two wheels 510 arranged relative to each other along a first direction F1. When the object to be detected 500 is in operation, the two wheels 510 are respectively arranged on two tracks arranged relative to each other. The wheel-rail force measurement device includes a first rotating part, a second rotating part, a collection assembly, and a drive assembly. The first rotating part and the second rotating part are arranged relative to the collection assembly along the first direction F1, so that the collection assembly can collect the wheel-rail force exerted on the first rotating part and the second rotating part. When the object to be detected 500 is placed on the wheel-rail force measurement device, a first of the two wheels 510 cooperates with the first rotating part, and a second of the two wheels 510 cooperates with the second rotating part. The drive assembly is respectively connected to the first rotating part and the second rotating part to drive the first rotating part and the second rotating part to rotate about an axis extending along the first direction F1 to simulate two tracks.

[0036] According to the above technical features, the wheel-rail force measuring device provided by the present application uses the first rotating part and the second rotating part driven by the driven component to rotate around the axis extending along the first direction F1 to simulate the two tracks of the object to be detected 500 when it is in a running state. In other words, the rolling motion of the first rotating part and the second rotating part relative to the wheel 510 replaces the rolling motion of the wheel 510 relative to the track, which effectively reduces the range of movement of the object to be detected 500 during the detection process, so that the wheel-rail force collecting part 220 (i.e., the collecting component) of the wheel-rail force detecting device can be transferred from the object to be detected 500 to the first rotating part. The first rotating part and the second rotating part, on the one hand, effectively avoid changing or destroying the original structure of the object to be detected 500 during the process of setting the wheel-rail force acquisition part 220, so that the detection result is closer to the actual situation of the object to be detected 500, improves the test accuracy, and avoids the phenomenon that the setting position of the wheel-rail force acquisition part 220 affects the test accuracy; on the other hand, it effectively reduces the preparatory work of the wheel-rail force detection device (that is, avoids the process of setting the wheel-rail force acquisition part 220 on the object to be detected 500 before each wheel-rail force test), effectively improves the test efficiency, and reduces the detection cost.

[0037] See also Figures 1 to 3 The direction shown in F1 in the figure may be an example of a first direction, the direction shown in F2 in the figure may be an example of a second direction, and the direction shown in F3 in the figure may be an example of a third direction. Preferably, any two of the first direction F1, the second direction F2, and the third direction F3 are perpendicular.

[0038] It should be noted that the wheel-rail force measured by the wheel-rail force measuring device provided in this application may include lateral force, vertical force and tangential force. Figure 1 , the Fx direction shown in the figure is the lateral force direction, and the Fy direction shown in the figure is the vertical force direction. In addition, the tangential force direction is the direction perpendicular to the Fx direction and the Fy direction respectively. Figure 1 The angle problem shown is not shown.

[0039] In addition, the object to be detected 500 may be a bogie, a rail transportation equipment, etc. Figure 1 An example is shown in which the object to be detected 500 is a bogie.

[0040] Preferably, the first rotating part may be a first rail wheel 110, and the second rotating part may be a second rail wheel 120. The width of the first rail wheel 110 and the second rail wheel 120 may be equal to the width of the rail, so as to cooperate with the wheel 510.

[0041] However, the present invention is not limited thereto. The first rotating part and the second rotating part may not be limited to the form of the first rail wheel 110 and the second rail wheel 120. As long as the first rotating part and the second rotating part have a rotating part that can replace the rail and cooperate with the wheel 510, the structure of the first rotating part and the second rotating part may also be other shapes.

[0042] Preferably, if Figure 1 and Figure 2 As shown, the number of the collection components can be two, the first rail wheel 110 is provided in one of the two collection components, and the second rail wheel 120 is provided in the other of the two collection components, so as to adapt to the wheel pair structure of the rail transportation equipment and enable the wheel-rail force measuring device to collect the wheel-rail force data of any wheel 510, so as to facilitate separate analysis of each wheel 510 of the object 500 to be detected.

[0043] It should be noted that the number of collection components is not limited to two. The above description is only based on a pair of wheels of the object to be detected 500 as an example. The number of collection components can be adaptively adjusted according to the number of wheels 510 of the object to be detected 500. For example, the number of collection components can also be 4, 6, 8, ... 2N (N is a positive integer).

[0044] See also Figure 3 As shown, the following will take the first track wheel 110 and a collection component corresponding thereto as an example to describe the specific structure of the collection component.

[0045] Preferably, the collecting assembly may include a holding portion 210 , and the first track wheel 110 is arranged on the collecting assembly via the holding portion 210 to ensure the rotatability of the first track wheel 110 .

[0046] Preferably, if Figures 1 to 3 As shown, the holding portion 210 may be a bearing, and the rotating shaft 320 described below is disposed in the bearing to ensure the rotatability of the first track wheel 110 .

[0047] Preferably, the collection assembly may further include a collection unit 220 for collecting the wheel-rail force borne by the first rail wheel 110. Optionally, the collection unit 220 may be a three-component sensor, so as to collect and analyze the wheel-rail force in the form of lateral force, vertical force, and tangential force according to the force direction.

[0048] Preferably, for the collection assembly corresponding to the first rail wheel 110, the number of the above-mentioned collection parts 220 can be multiple, and the multiple collection parts 220 are evenly distributed along the sensing platform 230 described below to improve the collection sensitivity of the wheel-rail force borne by the first rail wheel 110, so as to improve the accuracy of the wheel-rail force measuring device.

[0049] Preferably, if Figure 2 As shown, for the collection component corresponding to the first rail wheel 110, the number of the collection parts 220 can be 4, and the 4 collection parts 220 are arranged in a 2×2 matrix structure on the following sensing platform 230. In this way, while ensuring the collection sensitivity of the wheel-rail force borne by the first rail wheel 110, the setting stability of the following sensing platform 230 is effectively guaranteed.

[0050] Preferably, if Figures 1 to 3 As shown, the above-mentioned collection component can also include a sensing platform 230, and the above-mentioned holding part 210 and the collection part 220 are arranged on both sides of the sensing platform 230. In this way, while ensuring the stable setting of the holding part 210, the wheel-rail force borne by the first rail wheel 110 is effectively uniformed through the sensing platform 230, so as to facilitate the collection of the above-mentioned collection part 220.

[0051] Furthermore, the holding portion 210 may further include a bearing seat 211, which is fixed to the side of the sensing platform 230 away from the collecting portion 220. Figure 2 As shown, the bearing seat 211 can be bolted to the induction platform 230 .

[0052] Preferably, if Figures 1 to 3 As shown, the collection assembly may further include a supporting platform, and the collection unit 220 may extend along a second direction F2. The collection unit 220 is disposed between the supporting platform and the sensing platform 230, so that the collection unit 220 can be stably disposed to ensure the accuracy of the data collected by the collection unit 220. Preferably, the second direction F2 may be the direction of gravity.

[0053] See also Figure 1 As shown, the structure and connection method of the second track wheel 120 and a corresponding collection component are similar to those of the first track wheel 110 and a corresponding collection component, and are not repeated here.

[0054] In an embodiment, Figure 1 and Figure 2 As shown, the wheel-rail force measuring device may further include a supporting assembly, which may be a test platform 400 , and the aforementioned multiple acquisition assemblies may all be disposed on the test platform 400 .

[0055] Preferably, if Figure 2 As shown, the above-mentioned test platform 400 may include a slide groove 410 extending along the first direction F1, and the supporting platform of any of the above-mentioned collection components may be slidably connected to the slide groove 410, so that any of the collection components can slide along the slide groove 410, so that the wheel-rail force measuring device can adapt to the object to be tested 500 with different wheelbases.

[0056] Preferably, see Figure 2 The slide groove 410 may be an inverted "T"-shaped groove. The inverted "T"-shaped groove can be understood as a shape obtained by cutting the slide groove 410 along a plane defined by both the second direction F2 and the third direction F3 into an inverted "T" shape. The support platform may include multiple bolts, the nut portion of each bolt may be retained within the inverted "T"-shaped groove, and the stud of the bolt may extend along the second direction F2 and penetrate the support platform. In this way, a nut may be screwed into the end of the stud facing away from the test platform 400 relative to the support platform 240, thereby securing the support platform 240 relative to the test platform 400. When the distance between the two collection assemblies in the first direction F1 needs to be adjusted, the nut may be loosened to allow the support platform 240 to slide along the slide groove 410, thereby adjusting the distance between the two collection assemblies in the first direction F1.

[0057] Alternatively, as Figure 2 As shown, the number of the above-mentioned sliding grooves 410 can be multiple, and the sliding grooves 410 can be spaced apart in the third direction F3 of the test platform 400 to ensure the connection stability and sliding smoothness between the supporting platform and the test platform 400.

[0058] In an embodiment, the wheel-rail force measurement device may further include a drive shaft assembly 300 , through which the drive assembly is connected to both the first rail wheel 110 and the second rail wheel 120 to achieve rotational synchronization of the first rail wheel 110 and the second rail wheel 120 .

[0059] Alternatively, the drive assembly may be a rotary electric motor.

[0060] Preferably, the drive shaft assembly 300 may include a coaxially arranged connecting shaft 310 and a rotating shaft 320. The number of rotating shafts 320 may be equal to the number of the aforementioned acquisition components, with one rotating shaft 320 disposed within each of the aforementioned bearings to transmit power to the first rail wheel 110 and the second rail wheel 120. Any two adjacent rotating shafts 320 among the plurality of rotating shafts 320 are connected via the connecting shaft 310. The connecting shaft 310 and the rotating shaft 320 are detachably connected, enabling the wheel-rail force measurement device to adapt to objects 500 to be detected with different wheelbases.

[0061] Preferably, if Figure 1 and Figure 2As shown, taking the example in which the number of the above-mentioned collecting components is two, correspondingly, the number of rotating shafts 320 can be two, the number of connecting shafts 310 can be one, the two rotating shafts 320 can be respectively arranged in the two retaining parts 210, and the connecting shaft 310 can be arranged between the two rotating shafts 320, and the connecting shaft 310 can be detachably connected to the two rotating shafts 320 respectively.

[0062] Furthermore, the wheel-rail force measurement device may further include a feedback unit, with which any of the aforementioned acquisition units 220 can be communicatively connected to facilitate collection and analysis of the collected wheel-rail force data. The feedback unit may be a computer equipped with a three-component data analysis system. The three-component data analysis system is a built-in system of the three-component sensor and is known in the art and will not be further described.

[0063] Preferably, the driving assembly can be in communication with the feedback unit to control and display the rotation speed of the first track wheel 110 and the second track wheel 120 driven by the driving assembly.

[0064] Based on the features described above, Figures 1 to 3 The wheel-rail force measuring device shown is used as an example for description, and the working principle of the wheel-rail force measuring device will be described in detail below.

[0065] During the preliminary preparation process, the supporting platform is slid along the first direction F1, and the distance between the two collection components is adjusted so that the distance between the first track wheel 110 and the second track wheel 120 is equal to the wheelbase of the object to be detected 500, and the connecting shaft 310 of corresponding size is connected to the two rotating shafts 320 respectively.

[0066] During the test, the first of the two wheels 510 of the object to be tested 500 is placed on the first track wheel 110, and the second of the two wheels 510 of the object to be tested 500 is placed on the second track wheel 120. At this time, the drive assembly is turned on to make the first track wheel 110 and the second track wheel 120 rotate synchronously, so that the linear speed of the outer edges of the first track wheel 110 and the second track reaches the test speed, and the wheel-rail force data of the feedback unit is recorded.

[0067] An embodiment of the second aspect of the present application further provides a measurement system, comprising the wheel-rail force measuring device described in any of the above embodiments, and thus having all the beneficial technical effects of the wheel-rail force measuring device, which will not be described in detail here.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wheel-rail force measurement device for measuring the wheel-rail force exerted on an object to be detected during operation, wherein the object to be detected comprises two wheels disposed opposite to each other along a first direction, and when the object to be detected is in operation, the two wheels are disposed on two oppositely disposed tracks, characterized in that: The wheel-rail force measuring device includes a first rotating part, a second rotating part, a collection assembly, and a driving assembly. The first rotating part and the second rotating part are arranged relative to the collection assembly along the first direction so that the wheel-rail force exerted on the first rotating part and the second rotating part can be collected by the collection assembly. When the object to be detected is placed on the wheel-rail force measuring device, a first of the two wheels cooperates with the first rotating part, and a second of the two wheels cooperates with the second rotating part, and the drive assembly is connected to the first rotating part and the second rotating part respectively to drive the first rotating part and the second rotating part to rotate around an axis extending along the first direction, so as to simulate the two tracks; There are two collecting assemblies, the first rotating part is provided at one of the two collecting assemblies, and the second rotating part is provided at the other of the two collecting assemblies; For any of the collection components, the collection component includes a collection portion and a holding portion connected to each other, the first rotating portion and the second rotating portion are both provided on the collection component via the corresponding holding portion, and the holding portion is a bearing; For any of the collection assemblies, the collection assembly further comprises a supporting platform and a sensing platform disposed opposite to each other along a second direction, the collection portion extending along the second direction, the collection portion disposed between the supporting platform and the sensing platform, the holding portion disposed on a side of the sensing platform facing away from the collection portion, and the second direction being perpendicular to the first direction; The first rotary part and the second rotary part are coaxially arranged on the drive shaft group, and the drive assembly is connected to the first rotary part and the second rotary part via the drive shaft group. The drive shaft assembly includes a coaxially arranged connecting shaft and a rotating shaft, and one rotating shaft is disposed in any of the bearings for transmitting power between the first rotating part and the second rotating part; any two adjacent rotating shafts among the plurality of rotating shafts are connected via the connecting shaft, and the connecting shaft and the rotating shaft are detachably connected; It also includes a support component, which includes a slide groove extending along the first direction, and the supporting platform of any of the collection components is slidably connected to the slide groove.

2. The wheel-rail force measuring device according to claim 1, characterized in that: For any of the collection components, there are multiple collection parts, and the multiple collection parts are distributed on the sensing platform.

3. The wheel-rail force measuring device according to claim 2, characterized in that: For any of the collection components, the number of the collection parts is 4, and the 4 collection parts are arranged on the sensing platform in a 2×2 matrix structure.

4. The wheel-rail force measuring device according to any one of claims 1 to 3, characterized in that The first rotating part and the second rotating part are both rail wheels; The acquisition unit is a three-component sensor.

5. A wheel-rail force measurement system, characterized in that: The wheel-rail force measuring device comprises the device described in any one of claims 1 to 4.

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