Track gauge adjusting device applied to rail transit
By combining the adjusting cylinder and adjusting rod, and utilizing threaded transmission and reverse thread design, efficient and precise adjustment of turnout gauge is achieved, solving the problems of low operating efficiency and complex structure of existing devices, reducing costs and expanding the application range.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU METRO OPERATION CO LTD
- Filing Date
- 2025-03-14
- Publication Date
- 2026-05-19
AI Technical Summary
Existing turnout gauge adjustment devices are inefficient to operate, have complex structures and high costs, making it difficult to meet the requirements of modern high-efficiency operations, and lack flexibility in complex structures.
The device employs a combination structure of adjusting cylinder, adjusting rod, mounting parts, and limiting parts. Utilizing the principle of threaded transmission and reverse thread design, it achieves synchronous adjustment of the two rails, simplifying the device structure and improving ease of operation.
It improves the efficiency and accuracy of gauge adjustment, reduces production costs, expands the scope of application, and reduces operational obstacles in complex structures.
Smart Images
Figure CN224259128U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail transit maintenance technology, and more specifically, to a track gauge adjustment device applied to rail transit. Background Technology
[0002] Turnouts are crucial track connection devices in rail transit, typically located in stations, depots, and other similar locations. They mainly consist of a switch, frog and guard rail section, and connecting section. Various types exist, including single turnouts, double turnouts, triple turnouts, and crossover turnouts. Their function is to allow locomotives and rolling stock to smoothly switch from one track to another, thereby achieving track connection and switching, improving track throughput capacity, and ensuring train operation safety. They can be controlled manually, electrically centrally, or via computer interlocking.
[0003] After a train has been running on a turnout for a long time, complex interaction forces are generated between the wheels and various components of the turnout, causing changes in the turnout's geometry. These changes in geometry alter the rail gauge, necessitating adjustment. Rail gauge is a critical parameter for ensuring the safe and stable operation of trains. If the gauge is too large, the wheels are more prone to derailment; if the gauge is too small, the friction between the wheels and rails increases, not only increasing running resistance but also accelerating wear on the wheels and rails, shortening the equipment's lifespan. Therefore, to ensure safe and efficient train operation, when changes in turnout geometry lead to abnormal rail gauge, timely adjustment is essential.
[0004] Under current technological conditions, turnout gauge adjustment mainly relies on crowbars and gauge adjusters. Crowbar operation is rudimentary and has revealed numerous problems in practical use, resulting in extremely low maintenance efficiency and failing to meet the stringent requirements of modern high-efficiency operations, significantly hindering work progress. While gauge adjusters compensate for the shortcomings of crowbars to some extent, they also have significant drawbacks. Structurally, a gauge adjuster includes connecting components such as hooks and locking assemblies for secure connection to the rail; a telescopic device powered by cylinders and pumps, achieving telescopic adjustment via connecting rods and guide rods; and auxiliary components such as stands, scale devices, and insulating blocks for stable placement, accurate observation, and safety. This complex structure not only leads to a significant increase in manufacturing costs but also results in an overall large size for the gauge adjuster. Faced with the complex and ever-changing structure of turnouts, the gauge adjuster severely lacks flexibility, making it difficult to fully utilize its adjustment function. This creates a significant obstacle in actual operation and severely limits its application scope. Utility Model Content
[0005] The purpose of this invention is to provide a track gauge adjustment device for rail transit, aiming to solve the technical problems mentioned in the background.
[0006] The embodiments of this utility model are implemented as follows:
[0007] This application provides a track gauge adjustment device for rail transit, comprising: an adjustment cylinder; a first adjustment assembly including a first adjustment rod, a first mounting member, and a first limiting member, wherein one end of the first adjustment rod is sleeved on the first end of the adjustment cylinder and threadedly engaged with the adjustment cylinder, and the other end of the first adjustment rod extends out of the port of the first end and is connected to the first mounting member, wherein the outer surface of the first mounting member is provided with two first positioning holes spaced apart along the axial direction of the first adjustment rod, and the first limiting member is used to insert and engage with any of the first positioning holes; and a second adjustment assembly including a second adjustment rod, The second mounting component and the second limiting component are provided. One end of the second adjusting rod is sleeved on the second end of the adjusting cylinder and threaded into the adjusting cylinder. The other end of the second adjusting rod extends out of the port of the second end and is connected to the second mounting component. The outer surface of the second mounting component is provided with two second positioning holes spaced apart along the axial direction of the first adjusting rod. The second limiting component is used to insert and cooperate with any of the second positioning holes. The openings of any of the first positioning holes and any of the second positioning holes face the same direction. When the adjusting cylinder rotates, the first adjusting rod and the second adjusting rod move away from or closer to each other.
[0008] Furthermore, based on the aforementioned scheme, the outer ring surface of the adjusting cylinder is provided with a hexagonal snap-fit part for connecting an external wrench.
[0009] Furthermore, based on the aforementioned scheme, the first end and the second end of the aforementioned adjusting cylinder are respectively provided with a first internal thread and a second internal thread, and the first adjusting rod and the second adjusting rod are respectively provided with a first external thread and a second external thread, and the first external thread and the second external thread are respectively adapted to the first internal thread and the second internal thread;
[0010] The first internal thread and the second internal thread have opposite thread directions.
[0011] Furthermore, based on the aforementioned scheme, the first mounting component and the first adjusting rod, as well as the second mounting component and the second adjusting rod, are detachably connected by pins.
[0012] Furthermore, based on the aforementioned scheme, both the first limiting member and the second limiting member include a docking body and a limiting body that are connected to each other, and the docking body is used to insert and cooperate with the first positioning hole or the second positioning hole.
[0013] Furthermore, based on the aforementioned scheme, the outer ring surface of the limiting body is provided with a groove.
[0014] Furthermore, based on the aforementioned scheme, the docking body and the limiting body are manufactured using an integral molding process.
[0015] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:
[0016] When using the adjusting device of this application, the first limiting member is first installed in the first positioning hole on the first mounting member near the adjusting cylinder, and the second limiting member is simultaneously installed in the second positioning hole on the second mounting member near the adjusting cylinder. At this time, the first and second limiting members can respectively abut against the opposite sides of the two rails. When the adjusting cylinder rotates, the two rails can be pushed away from each other using the threaded transmission principle, achieving an increase in track gauge. Conversely, if the first limiting member is installed in the first positioning hole on the first mounting member away from the adjusting cylinder, and the second limiting member is installed in the second positioning hole on the second mounting member away from the adjusting cylinder, the first and second limiting members will abut against the opposite sides of the two rails, thus clamping and positioning the two rails. When the adjusting cylinder rotates, the two rails can be brought closer together, achieving a decrease in track gauge. This solution has significant advantages. Compared to traditional pry bars, this adjusting device is specifically designed for track gauge adjustment, making operation more convenient and efficient, and significantly improving adjustment efficiency. Compared to existing gauge adjusters, its structure eliminates complex components such as hydraulic cylinders and pumps, consisting only of an adjusting cylinder, adjusting rod, mounting parts, and limiting parts, greatly simplifying the construction and effectively reducing manufacturing costs. At the same time, the device is compact and lightweight, allowing for flexible operation even with complex turnout structures. Its simple and direct adjustment method maximizes its adjustment function, reducing potential obstacles during actual operation and further expanding its application range. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 An isometric view of a track gauge adjustment device applied to rail transit, as described in this embodiment of the present invention. Figure 1 ;
[0019] Figure 2 An isometric view of a track gauge adjustment device applied to rail transit, as described in this embodiment of the present invention. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the structure of the first limiting member in an embodiment of this utility model.
[0021] Icons: 1-Adjusting cylinder, 2-Hexagonal snap-fit part, 3-First adjusting rod, 4-First limiting component, 401-Limiting body, 402-Dating body, 5-First mounting component, 6-First positioning hole, 7-Second adjusting rod, 8-Second limiting component, 9-Second mounting component, 10-Second positioning hole. Detailed Implementation
[0022] The embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0023] Example
[0024] Please refer to Figures 1-3 This application provides a track gauge adjustment device for rail transit, comprising: an adjustment cylinder 1; a first adjustment assembly including a first adjustment rod 3, a first mounting member 5, and a first limiting member 4, wherein one end of the first adjustment rod 3 is sleeved on the first end of the adjustment cylinder 1 and threadedly engaged with the adjustment cylinder 1, and the other end of the first adjustment rod 3 extends out of the port of the first end and is connected to the first mounting member 5, wherein the outer surface of the first mounting member 5 is provided with two first positioning holes 6 spaced apart along the axial direction of the first adjustment rod 3, and the first limiting member 4 is used to insert and engage with any of the first positioning holes 6; and a second adjustment assembly including a second adjustment rod 7, a second... Mounting component 9 and second limiting component 8: One end of the second adjusting rod 7 is sleeved on the second end of the adjusting cylinder 1 and threadedly engaged with the adjusting cylinder 1; the other end of the second adjusting rod 7 protrudes from the port of the second end and is connected to the second mounting component 9; the outer surface of the second mounting component 9 is provided with two second positioning holes 10 spaced apart along the axial direction of the first adjusting rod 3; the second limiting component 8 is used to insert and engage with any of the second positioning holes 10; wherein, the openings of any of the first positioning holes 6 and any of the second positioning holes 10 face the same direction; when the adjusting cylinder 1 rotates, the first adjusting rod 3 and the second adjusting rod 7 move away from or closer to each other.
[0025] When using the adjusting device of this application, the first limiting member 4 is first installed in the first positioning hole 6 on the first mounting member 5 near the position of the adjusting cylinder 1, and the second limiting member 8 is installed in the second positioning hole 10 on the second mounting member 9 near the position of the adjusting cylinder 1. At this time, the first limiting member 4 and the second limiting member 8 can respectively abut against the opposite sides of the two rails. When the adjusting cylinder 1 rotates, the two rails can be pushed away from each other using the principle of threaded transmission, thereby increasing the track gauge. Conversely, if the first limiting member 4 is installed in the first positioning hole 6 on the first mounting member 5 away from the position of the adjusting cylinder 1, and the second limiting member 8 is installed in the second positioning hole 10 on the second mounting member 9 away from the position of the adjusting cylinder 1, the first limiting member 4 and the second limiting member 8 will abut against the opposite sides of the two rails, thereby clamping and positioning the two rails. When the adjusting cylinder 1 rotates, the two rails can be brought closer together, thereby decreasing the track gauge. This solution has obvious advantages. Compared to traditional pry bars, this adjustment device is specifically designed for track gauge adjustment, offering greater convenience and efficiency, and significantly improving adjustment efficiency. Compared to existing track gauge adjusters, its structure eliminates complex components such as hydraulic cylinders and pumps, consisting only of an adjusting cylinder 1, adjusting rod, mounting components, and limiting components, greatly simplifying the construction and effectively reducing manufacturing costs. Furthermore, the device is compact and lightweight, allowing for flexible operation even with complex turnout structures. Its simple and direct adjustment method maximizes its adjustment function, reducing potential obstacles during actual operation and further expanding its application range.
[0026] The adjustment device of this application is used such that both the first mounting member 5 and the second mounting member 8 are located on the bottom side of the rail.
[0027] In a preferred embodiment, the outer ring surface of the adjusting cylinder 1 is provided with a hexagonal snap-fit part 2 for connecting an external wrench.
[0028] In the above embodiments, using a wrench to operate the hexagonal locking part 2 can greatly save manpower. With the help of the lever principle of the wrench, the operator can easily rotate the adjusting cylinder 1 with a small force, which reduces the labor intensity of the adjustment work.
[0029] In a preferred embodiment, the first end and the second end of the adjusting cylinder 1 are respectively provided with a first internal thread and a second internal thread, and the first adjusting rod 3 and the second adjusting rod 7 are respectively provided with a first external thread and a second external thread, and the first external thread and the second external thread are respectively adapted to the first internal thread and the second internal thread.
[0030] The first internal thread and the second internal thread have opposite thread directions.
[0031] In the above embodiment, the two ends of the adjusting cylinder 1 are respectively provided with a first internal thread and a second internal thread with opposite directions of rotation. These threads cooperate with the first adjusting rod 3 and the second adjusting rod 7, which have corresponding matching external threads. This allows the first adjusting rod 3 and the second adjusting rod 7 to move in opposite directions simultaneously when the adjusting cylinder 1 is rotated, based on the difference in the direction of the threads. This means that the adjustment of the two rails can be achieved simultaneously by rotating the adjusting cylinder 1, without the need to operate the two adjusting rods separately. This greatly simplifies the adjustment process and improves the adjustment efficiency. Moreover, the synchronous movement of the two adjusting rods in opposite directions ensures the balance of force during the adjustment process, avoids adjustment deviations caused by uneven force, and ensures more precise and stable gauge adjustment, making the entire gauge adjustment work more efficient and accurate.
[0032] In a preferred embodiment, the first mounting member 5 and the first adjusting rod 3, and the second mounting member 9 and the second adjusting rod 7 are detachably connected by pins.
[0033] In the above embodiments, in actual operating scenarios, if a component is damaged, such as wear and tear on the mounting part after long-term use, or deformation of the adjusting rod due to external force, the damaged component can be quickly removed and replaced by pulling out the pin, without having to replace the entire adjusting device, greatly reducing maintenance and time costs. Furthermore, this detachable connection method allows for easy separation of the mounting part from the adjusting rod during transportation or storage, reducing space occupation and facilitating handling and storage.
[0034] In a preferred embodiment, both the first limiting member 4 and the second limiting member 8 include a docking body 402 and a limiting body 401 connected to each other. The docking body 402 is used to insert and cooperate with the first positioning hole 6 or the second positioning hole 10.
[0035] In the above embodiments, the docking body 402 is tightly inserted into the first positioning hole 6 or the second positioning hole 10, enabling the limiting member 401 to be installed on the corresponding mounting piece. The limiting body 401 then directly contacts the rail, providing reliable abutment or clamping force, precisely controlling the movement of the rail, and improving the accuracy of track gauge adjustment.
[0036] As a preferred embodiment, the outer ring surface of the aforementioned limiting body 401 is provided with a groove.
[0037] In the above embodiments, when it is necessary to abut against the rail, the groove can better fit the rail profile. Compared with a flat surface, the groove can provide a more stable contact point, reduce the sliding offset that occurs during the adjustment process, and ensure that the limit body 401 fits tightly against the rail, achieving more accurate abutment positioning.
[0038] As a preferred embodiment, the docking body 402 and the limiting body 401 are manufactured using an integral molding process.
[0039] In the above embodiments, the integrally formed docking body 402 and limiting body 401 can improve the structural stability of the limiting component.
[0040] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.
[0041] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.
Claims
1. A track gauge adjustment device for rail transit, characterized in that, include: Adjusting cylinder (1); The first adjustment assembly includes a first adjustment rod (3), a first mounting member (5), and a first limiting member (4). One end of the first adjustment rod (3) is sleeved on the first end of the adjustment cylinder (1) and threadedly engaged with the adjustment cylinder (1). The other end of the first adjustment rod (3) extends out of the port of the first end and is connected to the first mounting member (5). The outer side of the first mounting member (5) is provided with two first positioning holes (6) spaced apart along the axial direction of the first adjustment rod (3). The first limiting member (4) is used to insert and engage with any of the first positioning holes (6). as well as The second adjustment assembly includes a second adjustment rod (7), a second mounting piece (9), and a second limiting piece (8). One end of the second adjustment rod (7) is sleeved on the second end of the adjustment cylinder (1) and threaded into the adjustment cylinder (1). The other end of the second adjustment rod (7) passes through the port of the second end and is connected to the second mounting piece (9). The outer side of the second mounting piece (9) is provided with two second positioning holes (10) spaced apart along the axial direction of the first adjustment rod (3). The second limiting piece (8) is used to insert and cooperate with any of the second positioning holes (10). The openings of any of the first positioning holes (6) and any of the second positioning holes (10) are oriented in the same direction. When the adjusting cylinder (1) rotates, the first adjusting rod (3) and the second adjusting rod (7) move away from or closer to each other.
2. The track gauge adjustment device for rail transit according to claim 1, characterized in that, The outer ring surface of the adjusting cylinder (1) is provided with a hexagonal snap-fit part (2) for connecting an external wrench.
3. The track gauge adjustment device for rail transit according to claim 1, characterized in that, The first end and the second end of the adjusting cylinder (1) are respectively provided with a first internal thread and a second internal thread, and the first adjusting rod (3) and the second adjusting rod (7) are respectively provided with a first external thread and a second external thread, and the first external thread and the second external thread are respectively adapted to the first internal thread and the second internal thread; The first internal thread and the second internal thread have opposite thread directions.
4. A track gauge adjustment device for rail transit according to claim 3, characterized in that, The first mounting component (5) and the first adjusting rod (3), and the second mounting component (9) and the second adjusting rod (7) are detachably connected by pins.
5. A track gauge adjustment device for rail transit according to claim 1, characterized in that, The first limiting member (4) and the second limiting member (8) each include a docking body (402) and a limiting body (401) connected to each other. The docking body (402) is used to insert and cooperate with the first positioning hole (6) or the second positioning hole (10).
6. A track gauge adjustment device for rail transit according to claim 5, characterized in that, The outer ring surface of the limiting body (401) is provided with a groove.
7. A track gauge adjustment device for rail transit according to claim 5, characterized in that, The docking body (402) and the limiting body (401) are manufactured using an integral molding process.