Rail corrugation measuring device and measuring instrument thereof

Abstract

The utility model discloses a steel rail corrugation measuring device and a measuring instrument thereof, and relates to the technical field of steel rail corrugation detection. The steel rail corrugation measuring device comprises a machine shell, a walking wheel assembly, a sensor connecting piece and an acceleration sensor. One part of the walking wheel assembly extends out of the machine shell and is used for abutting against the top face of the steel rail; the number of the walking wheel assemblies is multiple, and at least one walking wheel assembly is provided with an encoder. The sensor connecting piece is connected with the shell and the acceleration sensor; a part of the acceleration sensor extends out of the machine shell and is used for abutting against the top face of the steel rail. The steel rail corrugation measuring instrument comprises the steel rail corrugation measuring device. The utility model provides a steel rail corrugation measuring device and a measuring instrument thereof, which are used for solving the problems of a chord measuring method in the aspects of accuracy, short-wavelength corrugation detection and dependence on rail conditions. And the inertia reference method is high in cost, cannot accurately capture the tiny change of the steel rail, and has great wear to the steel rail when being used for a large-scale track measuring vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of rail corrugation detection, and specifically, to a rail corrugation measuring device and a measuring instrument thereof. Background Art

[0002] Rail corrugation, abbreviated as rail wave wear, is a periodic uneven wear phenomenon with a regular wave-like shape along the longitudinal direction of the top of the rail after the rail is put into use and as the operation time increases. Rail corrugation is one of the main damage forms of rails. It will not only cause a sharp increase in wheel-rail forces, resulting in severe vibrations of locomotives, rolling stock and tracks, promoting the generation and development of damage to related components of tracks and locomotives, but also pose a hidden danger to traffic safety.

[0003] Rail corrugation measurement is an important part of railway track maintenance and is of great significance for ensuring the smoothness and safety of train operation. Currently, the commonly used rail corrugation measurements mainly adopt the chord measurement method and the inertial reference method. The chord measurement method calculates the rail corrugation situation by measuring the change of the steel chord tension, while the inertial reference method uses the inertial principle to obtain the measurement reference.

[0004] As a widely used corrugation detection method at present, although the chord measurement method has the advantages of simple principle and low cost, there are some obvious problems in practical applications, which are specifically as follows:

[0005] (1) Limited accuracy: The measurement accuracy of the chord measurement method is limited by the length of the chord and the selection of the measurement points. The length of the chord directly affects the sensitivity and accuracy of the measurement. An overly long chord may not be able to accurately capture short-wavelength corrugations, resulting in the loss of detailed information; while an overly short chord may amplify local track unevenness, causing distortion of the measurement results. In addition, the selection of the measurement points also has a great impact on the accuracy, and inappropriate measurement points may lead to deviations in the measurement results.

[0006] (2) Difficulty in detecting corrugations with short wavelengths: Since the chord measurement method calculates the corrugation based on the versine value from the measurement point to the chord, it is often difficult to accurately detect corrugations with short wavelengths. This may lead to some key short-wave wear being ignored, thus affecting the safety and service life of the track.

[0007] (3) Greatly affected by track conditions: The accuracy of the chord measurement method is also easily affected by track conditions. For example, the bending, twisting or local deformation of the track may cause changes in the chord reference, thereby affecting the accuracy of corrugation measurement. This dependence on track conditions limits the application range and reliability of the chord measurement method.

[0008] In summary, the chord measurement method has obvious problems in terms of accuracy, detection of corrugations with short wavelengths, and dependence on track conditions.

[0009] The inertial reference method is mostly used in large-scale track survey vehicles. It has a high cost, cannot accurately capture the minute changes of the rail, and causes relatively large wear to the rail. Summary of the Invention

[0010] The purpose of the present utility model is to provide a rail corrugation measuring device and its measuring instrument, so as to solve to a certain extent the problems existing in the chord measurement method in terms of accuracy, detection of corrugations with shorter wavelengths, and dependence on track conditions in the prior art, as well as the technical problems of the inertial reference method being mostly used in large-scale track survey vehicles, such as high cost, inability to accurately capture minute changes of the rail, and relatively large wear to the rail.

[0011] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0012] A rail corrugation measuring device includes a machine shell, a walking wheel assembly, a sensor connecting piece, and an acceleration sensor; the walking wheel assembly, the sensor connecting piece, and the acceleration sensor are all arranged inside the machine shell, and a part of the walking wheel assembly extends out of the machine shell and is used to abut against the top surface of the rail;

[0013] The number of the walking wheel assemblies is several, and at least one of the walking wheel assemblies has an encoder for recording the traveling distance of the walking wheel assembly;

[0014] One end of the sensor connecting piece is fixedly connected to the machine shell, and the other end is fixedly connected to the acceleration sensor; the acceleration sensor is located on the surface of the sensor connecting piece away from the machine shell;

[0015] A part of the acceleration sensor extends out of the machine shell and is used to abut against the top surface of the rail.

[0016] In any of the above technical solutions, optionally, the number of the walking wheel assemblies is two;

[0017] The acceleration sensor is arranged between the two walking wheel assemblies.

[0018] In any of the above technical solutions, optionally, the machine shell is connected with a side wheel assembly for abutting against the side surface of the rail.

[0019] In any of the above technical solutions, optionally, the side wheel assembly is connected to the machine shell through an elastic member, a pneumatic cylinder or a hydraulic cylinder.

[0020] In any of the above technical solutions, optionally, the walking wheel assembly is connected to the machine shell through a bearing;

[0021] The sensor connecting member is connected to the upper surface of the bottom plate of the housing; one end of the sensor connecting member is fixedly connected to the bottom plate of the housing, and the other end can be spaced from the bottom plate of the housing; the sensor connecting member is configured to swing up and down under the drive of the acceleration sensor so that the other end of the sensor connecting member moves away from or approaches the bottom plate of the housing.

[0022] A rail corrugation measuring instrument includes a handle assembly, a main connecting rod, a secondary rail support wheel assembly, and the above-mentioned rail corrugation measuring device.

[0023] The secondary rail support wheel assembly and the rail corrugation measuring device are respectively connected to both ends of the main connecting rod.

[0024] The handle assembly is connected to the main connecting rod.

[0025] In any of the above technical solutions, optionally, the rail corrugation measuring instrument further includes a tray.

[0026] The tray is fixedly connected to the main connecting rod.

[0027] In any of the above technical solutions, optionally, the tray is located above the main connecting rod, and the rail corrugation measuring device is located below the main connecting rod.

[0028] The secondary rail support wheel assembly can rotate around the axis of the main connecting rod.

[0029] In any of the above technical solutions, optionally, the handle assembly includes a plurality of handles; a handle base is fixedly connected to the main connecting rod, and the handle is detachably hinged to the handle base, and the rotation direction of the handle is perpendicular to the axial direction of the main connecting rod.

[0030] The number of the handles is two, and the two handles and the main connecting rod form a triangle; or the number of the handles is one.

[0031] In any of the above technical solutions, optionally, a side wheel assembly for abutting against the side surface of the rail is connected to the housing of the rail corrugation measuring device; the side wheel assembly is located on one side of the housing close to the secondary rail support wheel assembly.

[0032] The beneficial effects of the present utility model mainly lie in:

[0033] The utility model provides a rail corrugation measuring device and a measuring instrument thereof, comprising a casing, a running wheel assembly, a sensor connecting piece and an acceleration sensor; the running wheel assembly is used to support the rail corrugation measuring device and enable it to run smoothly on the rail; the sensor connecting piece and the acceleration sensor cooperate so that the acceleration sensor can stably and accurately sense the vibration of the rail, thereby ensuring the accurate capture and efficient transmission of the rail vibration data, and providing a reliable data basis for subsequent corrugation analysis. The rail corrugation measuring device detects the corrugation of the rail based on an acceleration sensor, and belongs to the inertial reference method, that is, the corrugation of the rail is directly reflected by measuring the acceleration change of the running wheel assembly, which effectively improves the measurement accuracy and stability, and can effectively solve the problems of the string measurement method in terms of accuracy, corrugation detection with a short wavelength, and dependence on track conditions; compared with large-scale track measuring vehicles, the cost of the rail corrugation measuring device is relatively low, and the acceleration sensor is used to abut the top surface of the rail for contact measurement, so the stability of detecting rail corrugation is good, the device has high sensitivity and strong anti-interference ability, and can capture small changes in the rail more accurately, and the wear on the rail is relatively small.

[0034] 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

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of a rail corrugation measuring instrument provided in an embodiment of the utility model;

[0037] Figure 2 for Figure 1 A partial enlarged view of the rail corrugation measuring instrument is shown.

[0038] Icons: 100-handle assembly; 200-housing; 300-travel wheel assembly; 400-sensor connector; 500-acceleration sensor; 700-main connecting rod; 800-tray; 900-side wheel assembly; 1100-auxiliary rail support wheel assembly. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0041] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0044] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] The following will describe in detail some embodiments of the present utility model in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0046] Embodiment

[0047] This embodiment provides a rail corrugation measuring device and its measuring instrument; please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of the rail corrugation measuring instrument provided in this embodiment, Figure 2 and Figure 1 is a partial enlarged view of the rail corrugation measuring instrument shown in

[0048] The rail corrugation measuring device provided in this embodiment is used to measure rail corrugation, can be measured based on the inertial reference method, and can be driven to move along the rail by hand pushing or a tractor.

[0049] Referring to Figure 1 and Figure 2 shown, the rail corrugation measuring device includes a machine shell 200, a walking wheel assembly 300, a sensor connecting piece 400, and an acceleration sensor 500; the walking wheel assembly 300, the sensor connecting piece 400, and the acceleration sensor 500 are all arranged inside the machine shell 200, and a part of the walking wheel assembly 300 extends out of the machine shell 200 and is used to abut against the top surface of the rail so that the walking wheel assembly 300 walks along the rail; through the walking wheel assembly 300, the rail corrugation measuring device is supported and enabled to travel smoothly on the rail. Optionally, the walking wheel assembly 300 is installed below the machine shell 200. In this embodiment, the machine shell 200 is the main structure of the rail corrugation measuring device, which is used to protect and fix the internal components. Optionally, the machine shell 200 is made of metal material and is a solid metal frame with enough space inside to accommodate other components. Through the machine shell 200, not only provides a strong protection for the internal walking wheel assembly 300, sensor connecting piece 400, and acceleration sensor 500, but also is the structural basis of the entire rail corrugation measuring device, ensuring the accurate positioning and stable connection of each component.

[0050] The number of the walking wheel assemblies 300 is several, and at least one of the walking wheel assemblies 300 has an encoder, which is used to record the walking distance of the walking wheel assembly 300, that is, the distance traveled by the walking wheel assembly 300 along the rail. Among them, the data of the encoder can be transmitted to a processing device such as a computer to accurately calculate the position of the corrugation. By accurately recording the moving track of the rail corrugation measuring device through the encoder, it provides data support for the accurate positioning of the corrugation position.

[0051] One end of the sensor connector 400 is fixedly connected to the housing 200, and the other end of the sensor connector 400 is fixedly connected to the acceleration sensor 500; the acceleration sensor 500 is located on the surface of the sensor connector 400 away from the housing 200; for example, the acceleration sensor 500 is located on the top surface of the sensor connector 400, and the bottom surface of the sensor connector 400 is fixedly connected to the housing 200. The sensor connector 400 is used to ensure that the acceleration sensor 500 can stably and accurately sense the vibration of the rail. Optionally, the sensor connector 400 is tightly combined with the acceleration sensor 500, which can effectively ensure the accurate capture and efficient transmission of the rail vibration data, and provide a reliable data basis for subsequent corrugation analysis.

[0052] A portion of the acceleration sensor 500 extends out of the housing 200 and is used to abut against the top surface of the rail. The acceleration sensor 500 abuts against the top surface of the rail to perform contact measurement to detect the corrugation of the rail. The acceleration sensor 500 has good stability in detecting the corrugation of the rail, high sensitivity, and strong anti-interference ability, and can accurately capture slight changes in the rail.

[0053] The rail corrugation measuring device described in this embodiment includes a housing 200, a running wheel assembly 300, a sensor connector 400 and an acceleration sensor 500; the running wheel assembly 300 is used to support the rail corrugation measuring device and enable it to run smoothly on the rail; the sensor connector 400 and the acceleration sensor 500 cooperate to enable the acceleration sensor 500 to stably and accurately sense the vibration of the rail, thereby ensuring the accurate capture and efficient transmission of the rail vibration data, and providing a reliable data basis for subsequent corrugation analysis. The rail corrugation measuring device detects the corrugation of the rail based on the acceleration sensor 500, which belongs to the inertial reference method, that is, the corrugation of the rail is directly reflected by measuring the acceleration change of the running wheel assembly 300, which effectively improves the measurement accuracy and stability, and can effectively solve the problems of the string measurement method in terms of accuracy, corrugation detection with a short wavelength, and dependence on track conditions; compared with large-scale track measuring vehicles, the cost of the rail corrugation measuring device is relatively low, and the acceleration sensor 500 is used to abut the top surface of the rail for contact measurement, so the stability of detecting rail corrugation is good, and it has high sensitivity and strong anti-interference ability, and can capture small changes in the rail more accurately, and the wear on the rail is relatively small.

[0054] See also Figure 1 and Figure 2 As shown, in an optional solution of this embodiment, the number of the running wheel assemblies 300 is two; by providing two running wheel assemblies 300, the rail corrugation measuring device can be better supported to run smoothly on the rail.

[0055] Optionally, the acceleration sensor 500 is disposed between the two walking wheel assemblies 300. By disposing the acceleration sensor 500 between the two walking wheel assemblies 300, the stability of the acceleration sensor 500 when the rail corrugation measuring device travels on the rail is improved, and thus the stability of the acceleration sensor 500 for detecting the rail vibration data can be effectively ensured.

[0056] See Figure 1 and Figure 2 As shown, in an alternative solution of this embodiment, the housing 200 is connected with a side wheel assembly 900 for abutting against the side surface of the rail. By means of the side wheel assembly 900, the stability of the rail corrugation measuring device during travel can be maintained. Optionally, the side wheel assembly 900 is located inside the rail and is used for abutting against the inner side surface of the rail.

[0057] See Figure 1 and Figure 2 As shown, in an alternative solution of this embodiment, the side wheel assembly 900 is connected to the housing 200 through an elastic member, a pneumatic cylinder or a hydraulic cylinder, or the side wheel assembly 900 is connected to the housing 200 through other structures. Among them, the elastic member is, for example, a spring. By adopting mechanisms such as elastic members, pneumatic cylinders, and hydraulic cylinders, the distance between the side wheel assembly 900 and the housing 200 can be finely adjusted to adapt to rails with different gauge distances.

[0058] See Figure 1 and Figure 2 As shown, in an alternative solution of this embodiment, the walking wheel assembly 300 is connected to the housing 200 through a bearing, so that the walking wheel assembly 300 can roll more smoothly.

[0059] See Figure 1 and Figure 2 As shown, in an alternative solution of this embodiment, the sensor connecting member 400 is connected to the upper surface of the bottom plate of the housing 200; one end of the sensor connecting member 400 is fixedly connected to the bottom plate of the housing 200, and the other end of the sensor connecting member 400 can be spaced from the bottom plate of the housing 200; the sensor connecting member 400 is configured to be able to swing up and down under the drive of the acceleration sensor 500, so that the other end of the sensor connecting member 400 moves away from or approaches the bottom plate of the housing 200. For example, when the rail corrugation measuring device is walking, the acceleration sensor 500 has undulating fluctuations up and down during movement because the rail surface it directly contacts is uneven, resulting in the other end of the sensor connecting member 400 connected thereto swinging up and down. By configuring the sensor connecting member 400 to be able to swing up and down under the drive of the acceleration sensor 500, the acceleration sensor 500 can capture the rail corrugation information more accurately.

[0060] See Figure 1 and Figure 2As shown in the figure, this embodiment also provides a rail corrugation measuring instrument, which includes a handle assembly 100, a main connecting rod 700, a secondary rail support wheel assembly 1100, and the rail corrugation measuring device described in any of the above embodiments; the secondary rail support wheel assembly 1100 and the rail corrugation measuring device are respectively connected to both ends of the main connecting rod 700; the handle assembly 100 is connected to the main connecting rod 700. For example, the handle assembly 100 is located above the housing 200. Through the handle assembly 100, it can be used to push the rail corrugation measuring instrument to travel along the rail, that is, to push the rail corrugation measuring device to travel along the rail. Optionally, the handle assembly 100 is firmly connected to the housing 200 by bolts or welding. In this embodiment, the secondary rail support wheel assembly 1100 travels on the secondary rail, and cooperates with the traveling wheel assembly 300 of the rail corrugation measuring device to travel on the rail to be measured, so that the rail corrugation measuring instrument runs more stably on the double-rail system, thereby ensuring the smooth travel and accurate positioning of the rail corrugation measuring device on the rail. Optionally, the housing 200 of the rail corrugation measuring device is connected to the main connecting rod 700.

[0061] In the rail corrugation measuring instrument described in this embodiment, the rail corrugation measuring device detects the corrugation condition of the rail based on the acceleration sensor 500, which belongs to the inertial reference method, that is, by measuring the acceleration change of the traveling wheel assembly 300 to directly reflect the corrugation condition of the rail, effectively improving the measurement accuracy and stability, and can effectively solve the problems existing in the chord measurement method in terms of accuracy, detection of short-wavelength corrugations, and dependence on track conditions; compared with large-scale track measuring vehicles, the cost of the rail corrugation measuring device is relatively low. Through the acceleration sensor 500 abutted against the top surface of the rail for contact measurement, the stability of detecting the rail corrugation is better, with high sensitivity, strong anti-interference ability, can accurately capture the minute changes of the rail, and has relatively little wear on the rail.

[0062] See Figure 1 and Figure 2 As shown in the figure, in an alternative solution of this embodiment, the rail corrugation measuring instrument further includes a tray 800. The tray 800 is fixedly connected to the main connecting rod 700, that is, the tray 800 is connected to the housing 200 through the main connecting rod 700, and the position of the tray 800 on the main connecting rod 700 can be adjusted as needed. Through the tray 800, it can be used to place a portable computer or other recording devices. By placing devices such as a portable computer on the tray 800, it is convenient for the operator to view the control interface, making it simple and intuitive to push and operate the rail corrugation measuring instrument. Through the ingenious design of the main connecting rod 700 and the tray 800, it not only provides a convenient working platform for the operator, but also ensures the efficient progress of data collection and recording.

[0063] In an alternative solution of this embodiment, the tray 800 is located above the main connecting rod 700, and the rail corrugation measuring device is located below the main connecting rod 700.

[0064] Optionally, the auxiliary rail support wheel assembly 1100 can rotate around the axis of the main connecting rod 700.

[0065] See Figure 1 and Figure 2 As shown in and, in an alternative solution of this embodiment, the handle assembly 100 includes a plurality of handles; a handle base is fixedly connected to the main connecting rod 700, and the handle is detachably hinged to the handle base, and the rotation direction of the handle is perpendicular to the axial direction of the main connecting rod 700; for example, the handle rotates in the height direction. By detachably hinging the handle to the handle base, it is convenient to disassemble the rail corrugation measuring instrument, and thus convenient for the transportation of the rail corrugation measuring instrument. By making the rotation direction of the handle perpendicular to the axial direction of the main connecting rod 700, the handle can be applicable to different heights.

[0066] Optionally, the number of handles is two, and the two handles form a triangle with the main connecting rod 700; its structure is more stable.

[0067] Optionally, the number of handles is one.

[0068] See Figure 1 and Figure 2 As shown in and, in an alternative solution of this embodiment, a side wheel assembly 900 for abutting against the side of the rail is connected to the housing 200 of the rail corrugation measuring device; the side wheel assembly 900 is located on the side of the housing 200 close to the auxiliary rail support wheel assembly 1100, that is, the side wheel assembly 900 is located inside the rail and is used to abut against the inner side of the rail to further enhance the stability of the rail corrugation measuring instrument during movement.

[0069] Currently, most chord measurement methods use the chord length to measure corrugations. mainly by selecting two measurement points on the rail, using the line connecting these two points (i.e., the chord) as a reference, and measuring the versine value of other points to this chord, so as to judge the corrugation situation. The rail corrugation measuring device and its measuring instrument of this embodiment use the inertial reference method for measurement, breaking the limitation of the traditional chord measurement method, greatly improving the accuracy and stability of the rail corrugation measuring device, and having a better detection effect for short-wavelength and micro corrugations. Its efficient and stable rail corrugation measuring method provides more accurate data support for railway maintenance and inspection. During the measurement process, the acceleration sensor 500 will sense the vibration situation of the rail and transmit this data to a processing device such as a computer for analysis and processing. By calculating the acceleration change of the detection walking wheel assembly 300, the corrugation situation of the rail can be directly reflected. This method effectively avoids the accuracy and stability problems of the chord measurement method and improves the measurement accuracy.

[0070] The existing inertial benchmark method is mostly used in large-scale track survey vehicles, applicable to tracks with longer lengths, not suitable for tracks with shorter distances, and causing relatively large wear to the tracks. The acceleration sensors of large-scale track survey vehicles generally do not directly contact the rail, but are installed on the train axle boxes or the vehicle body, indirectly reflecting the corrugation condition of the rail by measuring the vibration of the vehicle body. In addition, the vehicle speed is relatively high and the detection accuracy is relatively poor. The rail corrugation measuring device and its measuring instrument of this embodiment use manual pushing or a tractor to drive the rail corrugation measuring device to move along the rail at a low speed. Its acceleration sensor 500 directly contacts the top of the rail, and can more accurately capture the vibration and corrugation condition of the rail surface. For example, when manually pushing the rail corrugation measuring instrument along the rail, the acceleration sensor 500 continuously measures and records the vibration condition of the rail surface. These vibration data are processed and analyzed by processing devices such as a computer to identify the characteristics of the rail corrugation, such as wavelength, wave depth, etc. Among them, the manual pushing speed is, for example, any speed in 2m / s - 5m / s; for example, in a 2mm sampling interval, the driving speed for data acquisition can be selected as any speed in 2mm / s - 5m / s; for example, in a 1mm sampling interval, 2.5mm / s or 1m / s can be selected.

[0071] The rail corrugation measuring device and its measuring instrument of this embodiment are relatively simple to operate and are suitable for on-site rapid measurement and analysis. In addition, the rail corrugation measuring device and its measuring instrument, in cooperation with processing devices such as a computer, can also realize the functions of real-time processing, display, and storage of measurement data, facilitating on-site operation and subsequent data analysis.

[0072] The rail corrugation measuring instrument provided in this embodiment includes the above-mentioned rail corrugation measuring device. The technical features of the publicly disclosed rail corrugation measuring device also apply to this rail corrugation measuring instrument, and the technical features of the publicly disclosed rail corrugation measuring device are not described repeatedly here. The rail corrugation measuring instrument in this embodiment has the advantages of the above-mentioned rail corrugation measuring device, and the advantages of the publicly disclosed rail corrugation measuring device are not described repeatedly here.

[0073] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rail corrugation measuring device, characterized in that, It includes a housing (200), a traveling wheel assembly (300), a sensor connecting piece (400), and an acceleration sensor (500); the traveling wheel assembly (300), the sensor connecting piece (400), and the acceleration sensor (500) are all arranged inside the housing (200), and a part of the traveling wheel assembly (300) extends out of the housing (200) and is used to abut against the top surface of the rail; The number of the traveling wheel assemblies (300) is several, and at least one of the traveling wheel assemblies (300) has an encoder for recording the traveling distance of the traveling wheel assembly (300); One end of the sensor connecting piece (400) is fixedly connected to the housing (200), and the other end is fixedly connected to the acceleration sensor (500); the acceleration sensor (500) is located on the surface of the sensor connecting piece (400) away from the housing (200); A part of the acceleration sensor (500) extends out of the housing (200) and is used to abut against the top surface of the rail.

2. The rail corrugation measuring device according to claim 1, characterized in that The number of the traveling wheel assemblies (300) is two; The acceleration sensor (500) is arranged between the two traveling wheel assemblies (300).

3. The rail corrugation measurement device according to claim 1, characterized in that, The housing (200) is connected with a side wheel assembly (900) for abutting against the side surface of the rail.

4. The rail corrugation measuring device according to claim 3, wherein The side wheel assembly (900) is connected to the housing (200) through an elastic member, a pneumatic cylinder or a hydraulic cylinder.

5. The rail corrugation measuring device according to claim 1, characterized in that The traveling wheel assembly (300) is connected to the housing (200) through a bearing; The sensor connecting piece (400) is connected to the upper surface of the bottom plate of the housing (200); one end of the sensor connecting piece (400) is fixedly connected to the bottom plate of the housing (200), and the other end can be arranged at an interval from the bottom plate of the housing (200); the sensor connecting piece (400) is configured to be able to swing up and down under the drive of the acceleration sensor (500) so that the other end of the sensor connecting piece (400) moves away from or approaches the bottom plate of the housing (200).

6. A rail corrugation measuring instrument, characterized in that, It includes a handle assembly (100), a main connecting rod (700), a secondary rail support wheel assembly (1100), and a rail corrugation measuring device as described in any one of claims 1-5; The secondary rail support wheel assembly (1100) and the rail corrugation measuring device are respectively connected to both ends of the main connecting rod (700); The handle assembly (100) is connected to the main connecting rod (700).

7. The rail corrugation measuring instrument according to claim 6, characterized in that, It further includes a tray (800); The tray (800) is fixedly connected to the main connecting rod (700).

8. The rail corrugation measuring instrument according to claim 7, characterized in that, The tray (800) is located above the main connecting rod (700), and the rail corrugation measuring device is located below the main connecting rod (700); The secondary rail support wheel assembly (1100) can rotate around the axis of the main connecting rod (700).

9. The rail corrugation measuring instrument according to claim 6, characterized in that, The handle assembly (100) includes a plurality of handles; a handle base is fixedly connected to the main connecting rod (700), the handle is detachably hinged to the handle base, and the rotation direction of the handle is perpendicular to the axial direction of the main connecting rod (700); The number of the handles is two, and the two handles and the main connecting rod (700) form a triangle; or the number of the handles is one.

10. The rail corrugation measuring instrument according to claim 6, characterized in that, A side wheel assembly (900) for abutting against the side of the rail is connected to the casing (200) of the rail corrugation measuring device; the side wheel assembly (900) is located on one side of the casing (200) close to the auxiliary rail support wheel assembly (1100).

Images