Track fastener device

Abstract

The utility model discloses a rail fastener device which comprises an under-plate backing plate and a backing plate, the backing plate is placed on the upper surface of the under-plate backing plate, the under-plate backing plate and the backing plate are fixed on a sleeper through anchor bolts, a steel rail is arranged on the backing plate, and elastic strips are buckled on two sides of the steel rail through gauge blocks. The steel rail has the advantages that the elastic strips are buckled on the two sides of the steel rail through the gauge blocks, and the forelimb, the connecting limb a, the posterior limb, the connecting limb b and the middle limb jointly form a G shape, so that the fatigue life of the elastic strips is prolonged, the operation safety of a train is guaranteed, and the maintenance workload is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of track engineering fasteners, in particular to a track fastener device. Background Art

[0002] As a crucial connector in railway track structures, fastener systems are crucial for maintaining optimal track geometry and ensuring operational safety. In recent years, with the rapid construction and operation of numerous rail transit systems in my country, reports of damaged rubber pads and broken spring clips have become increasingly common.

[0003] The rails and fasteners are directly clamped together by spring clips. Once these clips break and fail, the fastening system loses its rail restraint, resulting in a variety of hazards. These hazards are particularly pronounced, including increased dynamic forces between the wheel and rail, increased displacement and acceleration of various track components, and an increase in the train's dynamic derailment coefficient. These characteristics not only exacerbate the dynamic response between the wheel and rail, shorten the service life of track components, and jeopardize driving safety, but the direct consequence of a broken spring clip is the loss of the fastening system's clamping force, resulting in the inability to maintain the rail's spatial geometric position. In severe cases, this can cause train derailment and serious accidents.

[0004] The main reason why the fastener spring clip breaks during train operation is that the spring clip exerts a large pressure on the rail buckle, causing the spring clip itself to have a high stress level, resulting in fatigue fracture under the action of cyclic train loads. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a track fastener device.

[0006] The purpose of the utility model is achieved through the following technical solutions: a rail fastener device, including a sub-plate pad and a pad, a pad is placed on the upper surface of the sub-plate pad, and the sub-plate pad and the pad are fixed to the sleeper by anchor bolts, a steel rail is arranged on the pad, and elastic bars are buckled on both sides of the steel rail by gauge blocks.

[0007] Preferably, the elastic bar includes a forelimb, a middle limb and a hind limb, the middle limb and the hind limb are fixedly connected to the pad, one end of the forelimb is connected to one end of the hind limb through a connecting limb a, and the other end of the hind limb is connected to one end of the middle limb through a connecting limb b, and the forelimb, connecting limb a, hind limb, connecting limb b and middle limb are collectively in a "G" shape.

[0008] Preferably, the middle height of the connecting limb a is higher than the middle height of the connecting limb b.

[0009] Preferably, supporting platforms are provided on both sides of the pad, the hind limbs are installed on the supporting platforms, and a socket is provided on the pad, the middle limbs are installed in the socket, and the socket is located on the inner side of the supporting platform.

[0010] Preferably, a convex block is provided in the jack, and a through hole is provided on the convex block.

[0011] Preferably, a rail groove is provided on the pad, a rail pad is provided in the rail groove, and the rail is installed on the rail pad.

[0012] Preferably, a spring washer and a buckle plate are installed on the anchor bolt, and the buckle plate is located on the upper surface of the base plate, and the spring washer is located above the buckle plate.

[0013] Preferably, the spring bar is made of 60Si2Mn spring steel with a diameter of 20 mm.

[0014] Preferably, the length of the elastic bar is 130 mm, the width is 114.65 mm, and the height is 62 mm.

[0015] The utility model has the following advantages: the utility model buckles elastic bars on both sides of the rail through the gauge blocks, and makes the front limbs, connecting limbs a, rear limbs, connecting limbs b and middle limbs all form a "G" shape, thereby improving the fatigue life of the elastic bars, ensuring the safety of train operation, and reducing the maintenance workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the rail fastener device;

[0017] Figure 2 Schematic diagram of the structure of the pad;

[0018] Figure 3 A structural diagram showing the positional relationship among the jack, bump, and through-hole;

[0019] Figure 4 Schematic diagram of the structure of the spring bar;

[0020] Figure 5 It is the structural diagram of the Mises stress distribution area of the elastic bar;

[0021] In the figure, 1-elastic strip, 2-pad, 3-pad under rail, 4-pad under plate, 5-gauge block, 6-embedded casing, 7-gusset plate, 8-spring washer, 9-anchor bolt, 10-rail, 11-front limb, 12-connecting limb a, 13-rear limb, 14-connecting limb b, 15-middle limb, 21-cap, 22-bump, 23-through hole, 24-socket. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] In this embodiment, if Figure 1As shown, a rail fastener device includes a sub-plate pad 4 and a pad 2. The pad 2 is placed on the upper surface of the sub-plate pad 4, and the sub-plate pad 4 and the pad 2 are fixed to the sleeper by anchor bolts 9. Preferably, when making the sleeper, the embedded sleeve 6 is pre-buried in the sleeper. A rail 10 is provided on the pad 2, and elastic bars 1 are clamped on both sides of the rail 10 through the gauge block 5. By clamping the elastic bars 1 on both sides of the rail 10 through the gauge block 5, and making the front limb 11, connecting limb a12, rear limb 13, connecting limb b14 and middle limb 15 together form a "G" shape, the fatigue life of the elastic bar 1 is improved, the safety of train operation is guaranteed, and the maintenance workload is reduced. In this embodiment, the existing finite element method is used for simulation to calculate the stress condition of the elastic bar. It has not been improved here and will not be described in detail.

[0029] Further, such as Figure 4 As shown, the spring bar 1 includes a front limb 11, a middle limb 15, and a hind limb 13. The middle limb 15 and the hind limb 13 are fixedly connected to the backing plate 2. One end of the front limb 11 is connected to one end of the hind limb 13 through a connecting limb a12, and the other end of the hind limb 13 is connected to one end of the middle limb 15 through a connecting limb b14. The front limb 11, the connecting limb a12, the hind limb 13, the connecting limb b14, and the middle limb 15 together form a "G" shape. Furthermore, the middle height of the connecting limb a12 is higher than the middle height of the connecting limb b14. Specifically, as shown in FIG. Figure 5 As shown, the Mises stress is mainly concentrated in the four areas A, B, C and D. The simulation data are as follows: the Mises stresses corresponding to the four areas of the traditional spring clip are A=1330 MPa, B=1223 MPa, C=1166 MPa and D=1217 MPa respectively; the Mises stresses corresponding to the four areas of the spring clip 1 in this embodiment are A=1053 MPa, B=1108 MPa, C=1031 MPa and D=1208 MPa respectively. It can be seen that compared with the traditional spring clip, the stress in area A is reduced by 277 MPa, the stress in area B is reduced by 115 MPa, the stress in area C is reduced by 135 MPa, and the stress in area D is reduced by 9 MPa. Therefore, the fatigue life of the spring clip 1 is improved, the safety of train operation is guaranteed, and the maintenance workload is reduced.

[0030] In this embodiment, if Figure 2 As shown, the base 2 is provided with a support 21 on both sides, and the rear limb 13 is installed on the support 21. The base 2 is also provided with a socket 24, and the middle limb 15 is installed in the socket 24, and the socket 24 is located on the inner side of the support 21. Specifically, the support 21 has two main functions: one is to accommodate the installation of the rear limb 13 of the elastic bar 1; the other is to be used as a handle for easy transportation, thereby improving installation efficiency. Further, as Figure 3As shown, a protrusion 22 is provided in the socket 24, and a through hole 23 is formed in the protrusion 22. Specifically, a worker passes a wire through the through hole 23. When the middle limb 15 of the spring clip 1 is installed in the socket 24, the protrusion 22 in the socket 24 can limit it, thereby ensuring that the spring clip 1 is installed in place and preventing the spring clip 1 from being over-installed, which would cause the stress conditions of the spring clip 1 to be inconsistent with the design. After installation, the worker ties the wire to the spring clip 1 to prevent the spring clip 1 from breaking and splashing, which would endanger driving safety.

[0031] In this embodiment, a rail groove is formed on the base plate 2 , a rail base plate 3 is provided in the rail groove, and the rail 10 is mounted on the rail base plate 3 .

[0032] Furthermore, a spring washer 8 and a pinch plate 7 are mounted on the anchor bolt 9, and the pinch plate 7 is located on the upper surface of the backing plate 2, and the spring washer 8 is located above the pinch plate 7. Preferably, the spring washer 8 is double-layered.

[0033] In this embodiment, the spring bar 1 is made of 60Si2Mn spring steel with a diameter of 20 mm. Furthermore, the spring bar 1 has a length of 130 mm, a width of 114.65 mm, and a height of 62 mm.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rail fastener device, characterized in that: The invention comprises a bottom plate (4) and a pad (2), wherein the pad (2) is placed on the upper surface of the bottom plate (4), and the bottom plate (4) and the pad (2) are fixed to the sleeper via anchor bolts (9), and a steel rail (10) is provided on the pad (2), and elastic bars (1) are buckled on both sides of the steel rail (10) via a track block (5).

2. The rail fastener device according to claim 1, characterized in that: The elastic bar (1) comprises a front limb (11), a middle limb (15) and a hind limb (13), wherein the middle limb (15) and the hind limb (13) are both fixedly connected to the backing plate (2), one end of the front limb (11) is connected to one end of the hind limb (13) via a connecting limb a (12), and the other end of the hind limb (13) is connected to one end of the middle limb (15) via a connecting limb b (14), and the front limb (11), the connecting limb a (12), the hind limb (13), the connecting limb b (14) and the middle limb (15) are collectively in a "G" shape.

3. The rail fastener device according to claim 2, characterized in that: The middle height of the connecting limb a (12) is higher than the middle height of the connecting limb b (14).

4. The rail fastener device according to claim 3, characterized in that: Support platforms (21) are provided on both sides of the pad (2), the hind limbs (13) are mounted on the support platforms (21), and a socket (24) is further provided on the pad (2), the middle limb (15) is mounted in the socket (24), and the socket (24) is located on the inner side of the support platform (21).

5. The rail fastener device according to claim 4, characterized in that: A protrusion (22) is provided in the insertion hole (24), and a through hole (23) is provided on the protrusion (22).

6. The rail fastener device according to claim 1, characterized in that: A rail groove is provided on the pad (2), a rail underpad (3) is provided in the rail groove, and the steel rail (10) is mounted on the rail underpad (3).

7. The rail fastener device according to claim 1, characterized in that: A spring washer (8) and a pinch plate (7) are mounted on the anchor bolt (9), and the pinch plate (7) is located on the upper surface of the backing plate (2), and the spring washer (8) is located above the pinch plate (7).

8. The rail fastener device according to claim 1, characterized in that: The spring bar (1) is made of 60Si2Mn spring steel with a diameter of 20 mm.

9. The rail fastener device according to claim 1, characterized in that: The elastic bar (1) has a length of 130 mm, a width of 114.65 mm and a height of 62 mm.

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