An auxiliary measuring device for monitoring displacement of a steel rail

Abstract

The utility model relates to the field of rail safety, concretely relates to a kind of auxiliary measuring device for rail displacement monitoring, including mounting and measuring piece, the measuring piece has first measurement surface and second measurement surface, the mounting is with the measuring piece fixed in the rail waist of rail in clamping mode;The first measurement surface is for responding the lateral displacement of the rail, and the second measurement surface is for responding the longitudinal displacement of the rail;The utility model is by being set with two measurement surfaces of specific angle in the measuring piece fixed on rail, the longitudinal and lateral displacement of rail is converted into the distance change quantity that external non-contact sensor can directly measure, realizes the automation, non-contact monitoring of rail displacement, changes the traditional mode of relying on artificial field observation, improves monitoring efficiency and real-time performance.

Description

Technical Field

[0001] This utility model relates to the field of rail safety, specifically to an auxiliary measuring device for monitoring rail displacement. Background Technology

[0002] In modern railway systems, especially high-speed railway lines, seamless track is a major trend in railway technology development. Seamless track eliminates a large number of track joints by welding standard-length rails into long rails, thereby improving the smoothness and safety of train operation.

[0003] However, because rails are made of metal, they store longitudinal temperature stresses when the ambient temperature changes. These stresses cause longitudinal and lateral displacements. If the rail displacement exceeds a preset safety threshold, it will seriously threaten train safety and may even cause trains to derail or overturn, resulting in major train accidents. Therefore, rail displacement measurement plays a crucial role in the safety monitoring of seamless railway tracks, especially on high-speed railway lines, where the requirements for rail displacement variables are even higher at specific locations.

[0004] Currently, a common method for monitoring rail displacement is to establish fixed displacement observation stakes or other measurement benchmarks along the track, with track maintenance personnel periodically going to the site to manually measure and record the rail displacement data relative to the benchmarks. This method suffers from drawbacks such as low efficiency, large errors, and lack of timeliness. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the on-site manual measurement of longitudinal and transverse displacement of rails is limited in terms of real-time performance and monitoring frequency. The purpose is to provide an auxiliary measuring device for rail displacement monitoring, which, together with external measuring sensors, can realize automated and high-precision measurement of rails.

[0006] This utility model is achieved through the following technical solution: An auxiliary measuring device for monitoring rail displacement includes: A measuring element having a first measuring surface and a second measuring surface, wherein the first measuring surface and the second measuring surface are arranged at a preset angle; Mounting component, wherein the measuring component is fixed to the web of the rail by clamping; When the auxiliary measuring device is installed on the rail, the first measuring surface is used to respond to the lateral displacement of the rail and is used for measurement by external measuring sensors. The second measuring surface is used to respond to the longitudinal displacement of the rail and is used for measurement by an external measuring sensor.

[0007] Optionally, the measuring component includes a straight plate portion and an inclined plate portion, with one end of the straight plate portion and one end of the inclined plate portion fixedly connected at a preset angle; The outer side of the straight plate portion is the mounting surface, which is in contact with the web of the rail. The inner side of the straight plate portion is the first measuring surface, and the outer side of the inclined plate portion is the second measuring surface.

[0008] Optionally, the center points of the first measuring surface and the second measuring surface are located on the same horizontal straight line, and both the first measuring surface and the second measuring surface extend along the length direction of the rail.

[0009] Optionally, the measuring element further includes a support rib disposed between the straight plate portion and the inclined plate portion, wherein the support rib, the straight plate portion, and the inclined plate portion form a right-angled triangle structure.

[0010] Optionally, the right-angled triangle structure has a right-angled side extending 120mm along the straight plate and a right-angled side extending 69.28mm along the support rib.

[0011] Optionally, the mounting component includes a left structural component and a right structural component respectively disposed on both sides of the rail; the left structural component and the right structural component are detachably connected by fasteners and are clamped together at the bottom of the rail; the measuring component is fixedly connected to the left structural component.

[0012] Optionally, the left structural member includes: The base plate is fitted to the underside of the rail. The left vertical part is attached to the left side of the bottom of the rail, and the lower end of the left vertical part is fixedly connected to the left end of the base plate. The left horizontal part is provided on the upper side of the rail base of the rail, and the left end of the left horizontal part is fixedly connected to the upper end of the left vertical part. A mounting plate is disposed on the left side of the rail web of the rail. The lower end of the mounting plate is fixedly connected to the right end of the left horizontal part. The first measuring surface of the measuring element is connected to the mounting plate by bolts, and the mounting surface of the measuring element is in contact with the rail web of the rail. The right structural member includes: The right vertical part is fitted to the right side of the rail base, and the lower end of the right vertical part is detachably connected to the right end of the base plate by clamping screws. The right horizontal section is located on the upper side of the rail base, and the right end of the right horizontal section is fixedly connected to the upper end of the right vertical section.

[0013] Optionally, the left horizontal section and the right horizontal section are respectively provided with adjusting screws, and the lower ends of the adjusting screws abut against the upper side of the rail base.

[0014] Optionally, the left structural component is integrally formed, the right structural component is integrally formed, the measuring component is made of PV material, and the mounting component is made of steel material.

[0015] Optionally, the external measurement sensor is a laser rangefinder.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: This invention converts the longitudinal and lateral displacements of the rail into distance changes that can be directly measured by an external non-contact sensor by setting two measuring surfaces at a specific angle on a measuring component fixed to the rail. This achieves automated, non-contact monitoring of rail displacement, changes the traditional mode that relies on manual on-site observation, and improves monitoring efficiency and real-time performance.

[0017] This utility model also adopts an installation method in which left and right structural components surround and clamp the bottom of the rail, which can effectively resist the severe vibration generated when the train passes by, ensure the relative position of the measuring component and the rail is constant, and avoid measurement errors caused by loosening of the device.

[0018] The clamping installation structure of this utility model eliminates the need for any destructive operations such as drilling or welding on the rail during installation, protecting the structural integrity of the rail and fully meeting the stringent requirements for track safety of railways, especially high-speed railway lines. Attached Figure Description

[0019] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and are included in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.

[0020] Figure 1 This is a front view of the installation state of an auxiliary measuring device for monitoring rail displacement according to the present invention.

[0021] Figure 2 This is a side view of the installation state of an auxiliary measuring device for monitoring rail displacement according to the present invention.

[0022] Figure 3 This is a structural schematic diagram of the measuring component according to the present invention.

[0023] Figure 4 This is a structural schematic diagram of the mounting component according to the present invention.

[0024] Reference numerals: 1-Measuring component, 2-Mounting component, 3-Rail web, 4-Rail base, 11-Inclined plate, 12-Straight plate, 13-Support rib, 111-First measuring surface, 121-Second measuring surface, 21-Left structural component, 22-Right structural component, 23-Clamping screw, 24-Adjusting screw, 211-Base plate, 212-Left vertical part, 213-Left horizontal part, 214-Mounting plate, 221-Right vertical part, 222-Right horizontal part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0026] It should also be noted that, for ease of description, only the parts relevant to this utility model are shown in the accompanying drawings.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Where there is no conflict, the embodiments and features described herein can be combined with each other. Reference will be made below. Figure 1 , Figure 2 , Figure 3 , Figure 4 The present invention will be described in detail with reference to its implementation methods.

[0030] Example 1 This embodiment provides an auxiliary measuring device for monitoring rail displacement. It includes a physical target that can be securely mounted on the rail, having two measuring surfaces arranged at a specific angle. When an external non-contact sensor (e.g., a laser rangefinder) continuously measures the distance between these two surfaces, any minute displacement of the rail in the lateral (left-right) and longitudinal (along the track extension direction) directions is converted into linear or functional changes in the distance from the sensor to the corresponding measuring surface, respectively. By interpreting these distance changes, the rail displacement can be accurately calculated.

[0031] The auxiliary measuring device disclosed in this embodiment mainly includes two major components: measuring component 1 and mounting component 2.

[0032] Mounting component 2 clamps the measuring component 1 to the rail web 3 of the rail; the rail web 3 refers to the area in the rail cross-section that connects the top rail head and the bottom rail base 4. The clamping installation ensures that the measuring component 1 can move synchronously with the rail as a whole, and the installation process will not cause any structural damage to the rail body.

[0033] The measuring element 1 has a first measuring surface 111 and a second measuring surface 121, which are arranged at a preset angle. When the auxiliary measuring device is installed on the rail, the first measuring surface 111 is used to respond to the lateral displacement of the rail and is used for measurement by an external measuring sensor. The second measuring surface 121 is used to respond to the longitudinal displacement of the rail and is used for measurement by an external measuring sensor.

[0034] The first measuring surface 111 is mainly used to respond to the lateral displacement of the rail. When the rail sways left and right, the measuring element 1 installed on it also moves accordingly. An external measuring sensor is vertically aligned with the first measuring surface 111, and by measuring the change in the distance between it and the surface, the lateral displacement of the rail can be directly obtained.

[0035] The second measuring surface 121 is used to respond to the longitudinal displacement of the rail. Since there is a preset angle between the second measuring surface 121 and the longitudinal extension line of the rail, when the rail expands or contracts, although its direction of movement is not perpendicular to the direction of the sensor probe, this longitudinal displacement will cause a change in the perpendicular distance from the sensor probe to the second measuring surface 121. There is a fixed trigonometric function relationship between this distance change and the actual longitudinal displacement; therefore, by measuring this distance change, the longitudinal displacement of the rail can be accurately calculated.

[0036] To ensure that measuring component 1 has good surface reflectivity to complement the use of optical sensors, and also possesses the advantages of being lightweight and corrosion-resistant, it can be made of PV material. As for mounting component 2, to ensure sufficient connection strength and rigidity to resist vibrations generated when a train passes, it can be made of high-strength steel.

[0037] The external measurement sensor is a laser rangefinder, a non-contact sensor that accurately measures distance by emitting and receiving laser beams.

[0038] Example 2 In order to construct two measuring surfaces at a specific angle and ensure that they maintain a stable spatial relationship under long-term use and vibration environments, this embodiment provides a detailed description of the specific structure of the measuring component 1: The measuring component 1 includes a straight plate portion 12 and an inclined plate portion 11, with one end of the straight plate portion 12 and one end of the inclined plate portion 11 fixedly connected at a preset angle. The outer side of the straight plate 12 (i.e. the side away from the inclined plate 11) is the mounting surface. The mounting surface is in contact with the rail web 3 of the rail. The mounting surface is the surface on which the measuring part 1 and the mounting part 2 are connected and finally in close contact with the rail web 3 of the rail, and is responsible for transmitting the fixing force.

[0039] The inner side of the straight plate portion 12 (i.e. the side facing the inclined plate portion 11) is the first measuring surface 111, and the outer side of the inclined plate portion 11 (i.e. the side away from the straight plate portion 12) is the second measuring surface 121.

[0040] To further optimize measurement performance, the center points of the first measuring surface 111 and the second measuring surface 121 are located on the same horizontal straight line, and both the first measuring surface 111 and the second measuring surface 121 extend along the length of the rail, ensuring that the two measuring areas are aligned in the longitudinal direction of the rail, which facilitates the synchronous alignment of external sensors and data acquisition.

[0041] To further enhance the overall structural strength and rigidity of the measuring component 1 and prevent it from deforming under vibration or accidental collision, thus affecting the measurement accuracy, the measuring component 1 also includes a support rib 13 disposed between the straight plate portion 12 and the inclined plate portion 11. The support rib 13, the straight plate portion 12 and the inclined plate portion 11 form a right-angled triangular structure.

[0042] This embodiment also provides a set of optimized specific dimensional parameters: a right-angled triangle structure with a right-angled side length of 120mm extending along the straight plate 12, a right-angled side length of 69.28mm extending along the support rib 13, and a measuring part 1 width set to 40mm.

[0043] In addition, in practical use, the lengths of the first measuring surface 111, the mounting surface, and the second measuring surface 121 can be flexibly adjusted according to the usage requirements, thereby adjusting the measurement range of longitudinal displacement.

[0044] Example 3 This embodiment describes the structure of mounting component 2.

[0045] Mounting component 2 includes a left structural component 21 and a right structural component 22 respectively disposed on both sides of the rail; the left structural component 21 and the right structural component 22 are detachably connected by fasteners and are clamped together on the rail base 4 of the rail; measuring component 1 is fixedly connected to the left structural component 21.

[0046] The left structural member 21 is responsible for supporting the measuring component 1, while the right structural member 22 acts as a movable clamp. During installation, by tightening the clamping screw 23, the right structural member 22 is pulled towards the left structural member 21, thereby generating a clamping force and fixing the entire device to the rail.

[0047] Left structural component 21 consists of multiple functional parts, which are integrally formed or fixedly connected: The base plate 211 is fitted to the lower side of the rail base 4, which is the flange portion of the rail base 4 extending to both sides.

[0048] The left vertical part 212 is fitted to the left side of the rail base 4 of the rail, and the lower end of the left vertical part 212 is fixedly connected to the left end of the base plate 211, which serves as a lateral limiting function. The left horizontal part 213 is set on the upper side of the rail base 4 of the rail, and the left end of the left horizontal part 213 is fixedly connected to the upper end of the left vertical part 212. Mounting plate 214 is located on the left side of the rail web 3. The lower end of mounting plate 214 is fixedly connected to the right end of the left horizontal part 213. The first measuring surface 111 of measuring piece 1 is connected to mounting plate 214 by bolts, so that the mounting surface of measuring piece 1 fits against the rail web 3. To ensure tight and stable fit, auxiliary parts such as washers or lock nuts can be added at the bolt connection to make fine adjustments and provide more reliable preload.

[0049] Right structural member 22 serves as a movable clamping arm, either integrally formed or fixedly connected: The right vertical part 221 is fitted to the right side of the rail base 4, and the lower end of the right vertical part 221 is detachably connected to the right end of the base plate 211 by the clamping screw 23. By rotating the clamping screw 23, the distance between the right vertical part 221 and the base plate 211 can be adjusted, thereby controlling the tightness of the clamping.

[0050] The right horizontal part 222 is set on the upper side of the rail base 4, and the right end of the right horizontal part 222 is fixedly connected to the upper end of the right vertical part 221, together with the left horizontal part 213, forming a downward pressing force on the rail base 4.

[0051] To further enhance installation stability and eliminate any slight wobbling, adjusting screws 24 are respectively installed on the left horizontal section 213 and the right horizontal section 222. The lower ends of the adjusting screws 24 abut against the upper side of the rail base 4. After the main structure is locked, a downward preload can be applied by tightening these two adjusting screws 24 to eliminate any possible gaps and ensure stable three-dimensional support between the entire device and the rail.

[0052] The left structural component 21 and the right structural component 22 are integrally formed. The integrally formed structure avoids stress concentration and potential connection failure risks caused by welding or screwing, resulting in higher overall strength and rigidity of the components.

[0053] The width of the left structural member 21 and the structural member can be set to 40mm, matching the size of the measuring member 1.

[0054] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. An auxiliary measuring device for monitoring rail displacement, characterized in that, include: Measuring component (1), the measuring component (1) has a first measuring surface (111) and a second measuring surface (121), the first measuring surface (111) and the second measuring surface (121) are arranged at a preset angle; Mounting component (2), which clamps the measuring component (1) to the rail web (3) of the rail. When the auxiliary measuring device is installed on the rail, the first measuring surface (111) is used to respond to the lateral displacement of the rail and is used for measurement by an external measuring sensor. The second measuring surface (121) is used to respond to the longitudinal displacement of the rail and is used for measurement by an external measuring sensor.

2. The auxiliary measuring device for rail displacement monitoring according to claim 1, characterized in that, The measuring component (1) includes a straight plate (12) and an inclined plate (11), with one end of the straight plate (12) and one end of the inclined plate (11) fixedly connected at a preset angle; The outer side of the straight plate part (12) is the mounting surface, which is in contact with the rail web (3) of the rail. The inner side of the straight plate part (12) is the first measuring surface (111), and the outer side of the inclined plate part (11) is the second measuring surface (121).

3. The auxiliary measuring device for rail displacement monitoring according to claim 1, characterized in that, The center points of the first measuring surface (111) and the second measuring surface (121) are located on the same horizontal straight line, and both the first measuring surface (111) and the second measuring surface (121) extend along the length direction of the rail.

4. The auxiliary measuring device for rail displacement monitoring according to claim 2, characterized in that, The measuring component (1) also includes a support rib (13) disposed between the straight plate portion (12) and the inclined plate portion (11), wherein the support rib (13), the straight plate portion (12) and the inclined plate portion (11) form a right-angled triangle structure.

5. The auxiliary measuring device for rail displacement monitoring according to claim 4, characterized in that, The right-angled triangle structure has a right-angled side length of 120mm extending along the straight plate (12) and a right-angled side length of 69.28mm extending along the support rib (13).

6. The auxiliary measuring device for rail displacement monitoring according to claim 2, characterized in that, The mounting component (2) includes a left structural component (21) and a right structural component (22) respectively disposed on both sides of the rail; the left structural component (21) and the right structural component (22) are detachably connected by fasteners and are clamped together on the bottom (4) of the rail; the measuring component (1) is fixedly connected to the left structural component (21).

7. The auxiliary measuring device for rail displacement monitoring according to claim 6, characterized in that, The left structural member (21) includes: The bottom plate (211) is attached to the lower side of the rail base (4) of the rail; The left vertical part (212) is attached to the left side of the rail base (4) of the rail, and the lower end of the left vertical part (212) is fixedly connected to the left end of the base plate (211). The left horizontal part (213) is provided on the upper side of the rail bottom (4) of the rail, and the left end of the left horizontal part (213) is fixedly connected to the upper end of the left vertical part (212). Mounting plate (214) is provided on the left side of the rail web (3) of the rail. The lower end of the mounting plate (214) is fixedly connected to the right end of the left horizontal part (213). The first measuring surface (111) of the measuring element (1) is connected to the mounting plate (214) by bolts, and the mounting surface of the measuring element (1) is in contact with the rail web (3) of the rail. The right structural member (22) includes: The right vertical part (221) is attached to the right side of the rail base (4) of the rail, and the lower end of the right vertical part (221) is detachably connected to the right end of the base plate (211) by a clamping screw (23). The right horizontal part (222) is provided on the upper side of the rail bottom (4) of the rail, and the right end of the right horizontal part (222) is fixedly connected to the upper end of the right vertical part (221).

8. The auxiliary measuring device for rail displacement monitoring according to claim 7, characterized in that, The left horizontal section (213) and the right horizontal section (222) are respectively provided with adjusting screws (24), and the lower ends of the adjusting screws (24) abut against the upper side of the rail bottom (4) of the rail.

9. The auxiliary measuring device for rail displacement monitoring according to claim 7, characterized in that, The left structural component (21) is integrally formed, the right structural component (22) is integrally formed, the measuring component (1) is made of PV material, and the mounting component (2) is made of steel material.

10. The auxiliary measuring device for rail displacement monitoring according to claim 1, characterized in that, The external measuring sensor is a laser rangefinder.

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