An anti-creep device for railway turnouts
By using anti-creep devices, including anti-creep rail braces and anti-rotation washers, in double-spinning turnouts, and connecting them with high-strength bolts, the problem of easy creep of the main rails was solved, thereby improving the stability and service life of the turnout structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-05-26
AI Technical Summary
The basic track of a double-headed turnout is prone to creeping in one direction due to uneven train travel, resulting in track structure instability. In particular, the non-working side cannot effectively provide longitudinal resistance, making longitudinal displacement easy to occur.
Anti-creep devices are adopted, including anti-creep rail braces and anti-rotation washers. The main rail and turnout sleepers are fixed by fastening connection components to prevent longitudinal displacement. High-strength bolts are used to form a stable structure to limit the longitudinal movement of the main rail.
It effectively prevents longitudinal displacement of the main rail, improves the structural stability of the turnout, reduces track creep, and extends the service life of the turnout.
Smart Images
Figure CN224280913U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of railway turnout technology, and in particular to an anti-creep device for turnouts. Background Technology
[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.
[0003] The double-heading turnout is a good piece of equipment for shortening the throat length of a station, reducing the station land use, and improving the efficiency of shunting operations. Its length is slightly longer than that of a single turnout, but its function is equivalent to two sets of opposing single turnouts.
[0004] Using double-heading turnouts can save on engineering work and reduce station construction costs. Double-heading turnouts can cross tracks directly, ensuring smooth passage, reducing train swerving, and providing a more stable ride.
[0005] The complex structure of double-spinning turnouts, with interconnected, restrictive, and interactive components, presents a significant challenge. One major problem is the inconsistent traffic density and varying total weight in each direction, which easily leads to turnout creep, causing excessive misalignment of the switch rails and even jamming of the movable point rail. Creep is a major cause of track damage, resulting in sleeper misalignment, incorrect spacing, and uneven rail gaps, causing significant disruption to the track's geometry. Due to structural constraints and limited space, the main rails of double-spinning turnouts use elastic clips on one working side, while the other side cannot be fitted with elastic clips and uses rigid clips to secure the non-working side rail base. Because the main rails are relatively short, the number of elastic clips is limited, making them prone to longitudinal displacement under long-term vehicle traffic, leading to creep in the main rails and their connected switch rails.
[0006] Due to the uneven train travel direction, the guide rails of double-cross turnouts tend to creep along the direction with more trains, especially the lower curved guide rails of obtuse-angle frogs. The rails are shorter, and the non-working side cannot achieve elastic clamping. The longitudinal resistance is provided only by a small number of elastic bars on the working side, which easily causes displacement and is not conducive to the structural stability of the turnout. Summary of the Invention
[0007] The purpose of this invention is to at least solve the technical problem of how to prevent longitudinal displacement of the base rail. This purpose is achieved through the following technical solution:
[0008] This utility model provides an anti-creep device for turnouts. The anti-creep device is used on the main rail of a double-cross turnout to prevent longitudinal displacement under long-term vehicle pressure. The anti-creep device for turnouts includes:
[0009] The anti-climb rail brace has its upper end abutting against the upper jaw of the base rail and its lower end abutting against the lower jaw of the base rail. The anti-climb rail brace is also provided with a groove. At the groove position, the bottom of the base rail is fixed to the turnout sleeper by a first fastening connection component.
[0010] An anti-rotation washer is provided on the side of the base rail opposite to the anti-climb rail support. The upper end of the anti-rotation washer abuts against the upper jaw of the base rail, the lower end abuts against the lower jaw of the base rail, and the middle part contacts the web of the base rail.
[0011] The second fastening connection assembly is sequentially inserted through the anti-rotation washer, the web of the base rail, and the anti-climb rail support from one side of the anti-rotation washer, and then connected and fixed thereto.
[0012] In addition, the anti-creep device for turnouts according to this utility model may also have the following additional technical features:
[0013] In some embodiments of the anti-creep device for turnouts of this utility model, along the longitudinal extension direction of the main rail, a plurality of anti-creep rail supports and a plurality of anti-rotation washers are provided on the main rail, and the plurality of anti-creep rail supports and the plurality of anti-rotation washers are spaced apart. One anti-creep rail support and one anti-rotation washer are fixed on the main rail by means of the second fastening connection assembly.
[0014] In some embodiments of the anti-climbing device for turnouts of this utility model, the first fastening connection assembly includes a spring clip, an iron seat, and a fastening bolt. At the groove position, the spring clip presses the base rail onto the iron seat, and the iron seat is fixed to the turnout sleeper by the bolt.
[0015] In some embodiments of the anti-climbing device for turnouts of this utility model, the lower end of the iron base is provided with an iron pad, the iron pad is in contact with the turnout sleeper, and is fixed by the bolt.
[0016] In some embodiments of the anti-climbing device for turnouts of this utility model, the iron pad and the iron base are welded together as a single unit.
[0017] In some embodiments of the anti-creep device for turnouts of this utility model, the iron pad and the iron base are used to limit the longitudinal movement of the anti-creep rail brace along the main rail.
[0018] In some embodiments of the anti-creep device for turnouts of this utility model, the groove is located in the middle area of one side of the anti-creep rail support, and the elastic clip is fastened to the anti-creep rail supports on both sides of the groove.
[0019] In some embodiments of the anti-creep device for turnouts of this utility model, both the second fastening connection assembly and the first fastening connection assembly use high-strength bolts.
[0020] This utility model can install anti-creep rail supports at each turnout sleeper position within the main rail range. High-strength bolts are used to connect the anti-creep rail supports to the rails as a whole. When the main rails experience longitudinal displacement, the anti-creep rail supports can maintain the position of the rails through the small relative movement designed between the pad iron seats. Attached Figure Description
[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0022] Figure 1 A schematic diagram of the anti-climbing device provided by this utility model installed on a turnout;
[0023] Figure 2 This is a schematic diagram of the anti-creep device for turnouts according to the present invention.
[0024] Figure 3 This is a schematic diagram of the internal structure of the anti-climbing device for turnouts according to this utility model.
[0025] The attached figures are labeled as follows:
[0026] 100. Anti-climb device;
[0027] 110. Anti-climb rail support; 120. Anti-rotation washer; 130. Iron base; 140. Iron pad; 150. Spring strip;
[0028] 160. First fastening connection assembly; 170. Second fastening connection assembly;
[0029] 200, main rail; 300, turnout sleeper. Detailed Implementation
[0030] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
[0031] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0032] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.
[0033] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.
[0034] It should be noted that the terms "distal" and "proximal" are used as directional terms, which are commonly used in the field of interventional medical devices. "Distal" refers to the end furthest from the operator during the procedure, while "proximal" refers to the end closest to the operator. Axial direction refers to the direction parallel to the line connecting the center of the distal and proximal ends of the medical device; radial direction refers to the direction perpendicular to the aforementioned axial direction.
[0035] Figure 1 A schematic diagram of the anti-climbing device provided by this utility model installed on a turnout; Figure 2 This is a schematic diagram of the anti-creep device for turnouts according to the present invention. Figure 3 This is a schematic diagram of the internal structure of the anti-creep device for turnouts according to this utility model. Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides an anti-creep device 100 for turnouts. The anti-creep device 100 is used on the base rail 200 in a double-cross turnout to prevent longitudinal displacement under long-term rolling pressure from vehicles. The anti-creep device 100 for turnouts includes an anti-creep rail support 110, an anti-rotation washer 120, and a second fastening connection assembly 170.
[0036] The upper end of the anti-climb rail support 110 abuts against the upper jaw of the base rail 200, and the lower end abuts against the lower jaw of the base rail 200. The anti-climb rail support 110 is also provided with a groove. At the groove position, the rail bottom of the base rail 200 is fixed to the turnout sleeper 300 by the first fastening connection component 160.
[0037] The anti-rotation washer 120 is disposed on the side of the base rail 200 opposite to the anti-climb rail support 110. The upper end of the anti-rotation washer 120 abuts against the upper jaw of the base rail 200, the lower end abuts against the lower jaw of the base rail 200, and the middle part contacts the rail web of the base rail 200.
[0038] The second fastening connection assembly 170 passes through the anti-rotation washer 120, the rail web of the base rail 200 and the anti-climb rail support 110 from one side of the anti-rotation washer 120, and connects and fixes them.
[0039] In one embodiment of the present invention, along the longitudinal extension direction of the base rail 200, a plurality of anti-climb rail supports 110 and a plurality of anti-rotation washers 120 are provided on the base rail 200, and the plurality of anti-climb rail supports 110 and the plurality of anti-rotation washers 120 are spaced apart. One anti-climb rail support 110 and one anti-rotation washer 120 are fixed on the base rail 200 by the second fastening connection assembly.
[0040] In one embodiment of the present invention, the first fastening connection assembly 160 includes a spring bar 150, an iron seat 130 and a fastening bolt. At the groove position, the spring bar 150 presses the base rail 200 onto the iron seat 130, and the iron seat 130 is fixed to the fork sleeper 300 by the bolt.
[0041] In one embodiment of this utility model, the lower end of the iron base 130 is provided with an iron pad 140, the iron pad 140 is in contact with the fork sleeper 300 and is fixed by the bolt.
[0042] In one embodiment of this utility model, the iron pad 140 and the iron base 130 are welded together.
[0043] In one embodiment of this utility model, the iron pad 140 and the iron base 130 are used to restrict the longitudinal movement of the anti-climb rail support 110 along the base rail 200.
[0044] In one embodiment of the present invention, the groove is located in the middle area of one side of the anti-climb rail support 110, and the elastic bar 150 is fastened to the anti-climb rail supports 110 on both sides of the groove.
[0045] In one embodiment of the present invention, both the second fastening connection assembly 170 and the first fastening connection assembly 160 are made of high-strength bolts.
[0046] The existing double-section turnout uses a live joint structure, which is relatively compact and space is limited. The base of the 200mm stock rail cannot be fitted with elastic clamps on both sides. Only the working side is fitted with a 150mm elastic clamp, and the other side uses a rigid clamp with a clamping plate. The rigid clamp cannot provide longitudinal resistance to the 200mm stock rail. The anti-creep function of the double-section turnout is mainly achieved by setting a single or double rail brace at the live joint position. The rail brace and the base plate are connected by bolts. Due to the use of a single rail brace and the relative movement between the bolt and the rail brace, its anti-creep effect is poor.
[0047] This utility model can install anti-creep rail supports 110 at each turnout sleeper 300 position within the range of the basic rail 200. High-strength bolts are used to connect the anti-creep rail supports 110 to the rail as a whole. When the basic rail 200 undergoes longitudinal displacement, the anti-creep rail supports 110 can maintain the position of the rail through the small relative movement designed between the pad iron seats 130.
[0048] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An anti-creep device for railway turnouts, characterized in that, The anti-creep device is used on the main rail of a double-cross turnout to prevent longitudinal displacement under long-term vehicle pressure. The anti-creep device includes: The anti-climb rail brace has its upper end abutting against the upper jaw of the base rail and its lower end abutting against the lower jaw of the base rail. The anti-climb rail brace is also provided with a groove. At the groove position, the bottom of the base rail is fixed to the turnout sleeper by a first fastening connection component. An anti-rotation washer is provided on the side of the base rail opposite to the anti-climb rail support. The upper end of the anti-rotation washer abuts against the upper jaw of the base rail, the lower end abuts against the lower jaw of the base rail, and the middle part contacts the web of the base rail. The second fastening connection assembly is sequentially inserted through the anti-rotation washer, the web of the base rail, and the anti-climb rail support from one side of the anti-rotation washer, and then connected and fixed thereto.
2. The anti-creep device for turnouts according to claim 1, characterized in that, Along the longitudinal extension direction of the base rail, a plurality of anti-climb rail supports and a plurality of anti-rotation washers are provided on the base rail, and the plurality of anti-climb rail supports and the plurality of anti-rotation washers are spaced apart. One anti-climb rail support and one anti-rotation washer are fixed to the base rail by means of the second fastening connection assembly.
3. The anti-creep device for turnouts according to claim 2, characterized in that, The first fastening connection assembly includes a spring clip, an iron base, and a fastening bolt. At the groove position, the spring clip presses the main rail onto the iron base, and the iron base is fixed to the turnout sleeper by the bolt.
4. The anti-creep device for turnouts according to claim 3, characterized in that, The lower end of the iron base is provided with an iron pad, which contacts the fork sleeper and is fixed by bolts.
5. The anti-creep device for turnouts according to claim 4, characterized in that, The iron pad and the iron base are welded together as a single unit.
6. The anti-creep device for turnouts according to claim 4, characterized in that, The iron pad and the iron seat are used to restrict the longitudinal movement of the anti-climb rail support along the main rail.
7. The anti-creep device for turnouts according to any one of claims 3-6, characterized in that, The groove is located in the middle area of one side of the anti-climb rail support, and the elastic bar is fastened to the anti-climb rail supports on both sides of the groove.
8. The anti-creep device for turnouts according to claim 7, characterized in that, Both the second fastening connection assembly and the first fastening connection assembly use high-strength bolts.