Railway slack prevention device

Abstract

The utility model provides a railway anti -loose device relates to railway anti -loose technical field. Railway anti -loose device includes first anti -loose subassembly and second anti -loose subassembly. First anti -loose subassembly is used for setting in switch pad, and second anti -loose subassembly is used for setting on the rail. First anti -loose subassembly includes first mounting plate, first bolt and first rotation stopper, first mounting plate is provided with first clamping part and first mounting hole, and mounting plate is used for setting in switch pad, first bolt sets up in first mounting hole and is used for setting switch pad, first rotation stopper is provided with second clamping part and first limiting portion, first clamping part and second clamping part clamping cooperation, and first limiting portion is set up in first bolt, is used for with the outer wall of first bolt abutment. Thus can see, through first anti -loose subassembly can effectively carry out anti -loose to bolt or nut, to maintain the reliability of bolt connection to the structure stability and security of track system is improved.

Description

Technical Field

[0001] This utility model relates to the field of railway anti-loosening technology, and more specifically, to a railway anti-loosening device. Background Technology

[0002] In railway track and turnout structures, bolted connections are widely used for the installation and fixing of various components to effectively maintain track geometry and laying condition, ensuring the safety and smooth operation of trains.

[0003] However, in actual operation, the train wheels exert long-term and high-frequency impact loads on the track and turnout structure, which can easily cause the bolted connections to loosen, leading to changes in the dimensions of the track connection structure, and thus affecting the overall structural stability of the track and turnout. In severe cases, it may even endanger train operation safety. Utility Model Content

[0004] The purpose of this utility model is to provide a railway anti-loosening device that can adapt to the frequent and rapid disassembly and installation of bolted connections during railway track operation due to turnout maintenance needs. It can maintain the reliability of bolted connections under complex service conditions, thereby improving the safety of the track structure.

[0005] The embodiments of this utility model are implemented as follows:

[0006] In a first aspect, this utility model provides a railway anti-loosening device, including a first anti-loosening component;

[0007] The first anti-loosening component includes a first mounting plate, a first bolt, and a first anti-rotation element;

[0008] The first mounting plate is provided with a first retaining part and a first mounting hole. The first mounting plate is used to be mounted on the turnout pad. The first bolt is provided in the first mounting hole and is used to pass through the turnout pad. The first anti-rotation member is provided with a second retaining part and a first limiting part. The first retaining part and the second retaining part are engaged and cooperated. The first limiting part is sleeved on the first bolt and is used to abut against the outer wall of the first bolt.

[0009] In an optional embodiment, the first anti-loosening component further includes a first anti-detachment member, wherein both the first retaining portion and the second retaining portion are provided with through holes or slot structures, and the first anti-detachment member passes through the first retaining portion and the second retaining portion.

[0010] In an optional embodiment, the first anti-loosening component further includes a first washer disposed between the first bolt and the mounting plate, and / or the first mounting plate is provided with a first boss, and the first bolt passes through the first mounting hole and corresponds to the first boss.

[0011] In an optional embodiment, one end of the first mounting plate is provided with a bent portion, which is used to engage with the edge of the turnout pad plate.

[0012] In an optional embodiment, the railway anti-loosening device further includes a second anti-loosening component, which includes a second mounting plate, a second bolt, a nut, and a second anti-rotation member. The second mounting plate is provided with a third holding part and a second mounting hole. The second mounting plate is used to be mounted on the rail or rail brace. The second bolt is provided in the second mounting hole and is used to pass through the rail or rail brace. The second anti-rotation member is provided with a fourth holding part and a second limiting part. The third holding part and the fourth holding part engage with each other. The second limiting part is sleeved on the second bolt or nut and is used to abut against the outer wall of the second bolt or the outer wall of the nut.

[0013] In an optional embodiment, the second anti-loosening component further includes a second anti-detachment member, wherein both the third and fourth retaining portions are provided with through holes or slot structures, and the second anti-detachment member passes through the third and fourth retaining portions.

[0014] In an optional embodiment, the second mounting plate is provided with a mounting surface for attaching to the side wall of the track.

[0015] In an optional embodiment, the second anti-loosening component further includes a base with a groove and a third mounting hole for the second bolt to pass through; the groove and the mounting surface are adapted to and fit together.

[0016] In an optional embodiment, the second mounting plate is further provided with a first guide portion on the mounting surface, and the groove is further provided with a second guide portion. The first guide portion and the second guide portion are slidably engaged to limit the sliding direction of the second mounting plate in the groove.

[0017] In an optional embodiment, the second anti-loosening component further includes a second washer disposed between the second mounting plate and the nut or the second bolt; and / or, the second mounting plate is provided with a second boss, and the second bolt passes through the second mounting hole and corresponds to the second boss.

[0018] The beneficial effects of the railway anti-loosening device provided in this embodiment of the utility model include: installing the first anti-loosening component on the turnout pad plate can not only effectively fix the turnout pad plate by threading the first bolt with the turnout pad plate, but also set a first mounting plate between the turnout pad plate and the first bolt. The first mounting plate and the first anti-rotation member are in a clamping engagement state so that the first limiting part is sleeved outside the first bolt and abuts against the head side wall of the first bolt, thus effectively realizing the anti-loosening function of the bolt. Attached Figure Description

[0019] 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.

[0020] Figure 1 A schematic diagram of the railway anti-loosening device provided in this embodiment of the utility model;

[0021] Figure 2 Exploded view of the first anti-loosening component provided in this embodiment of the utility model;

[0022] Figure 3 Exploded view of the first embodiment of the second anti-loosening component provided in this utility model;

[0023] Figure 4 Exploded view of the second embodiment of the second anti-loosening component provided in this utility model;

[0024] Figure 5 Exploded view of the third embodiment of the second anti-loosening component provided in this utility model;

[0025] Figure 6 Exploded view of the fourth embodiment of the second anti-loosening component provided in this utility model;

[0026] Figure 7 Exploded view of the fifth embodiment of the second anti-loosening component provided in this utility model;

[0027] Figure 8 Exploded view of the sixth embodiment of the second anti-loosening component provided in this utility model;

[0028] Figure 9 An exploded view of the seventh embodiment of the second anti-loosening component provided in this utility model.

[0029] Icons: 10-Railway anti-loosening device; 100-First anti-loosening component; 110-First mounting plate; 111-First clamping part; 112-First mounting hole; 113-Bending part; 120-First bolt; 130-First anti-rotation component; 131-Second clamping part; 132-First limiting part; 140-First anti-detachment component; 150-First washer; 200-Second anti-loosening component; 210-Second mounting plate; 211-Third clamping part; 21 2-Second mounting hole; 213-Mounting surface; 214-First guide part; 215-Second boss; 220-Second bolt; 230-Nut; 240-Second anti-rotation part; 241-Fourth clamping part; 242-Second limiting part; 250-Second anti-detachment part; 260-Base; 261-Groove; 262-Third mounting hole; 263-Second guide part; 270-Second washer; 11-Turnout pad; 12-Rail; 13-Rail brace. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] 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 merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In railway track and turnout structures, bolted connections are widely used for the installation and fixing of various components, serving as key connecting elements to ensure the overall stability and structural integrity of the track system. Through the tightening action of bolted connections, the track geometry and laying condition are effectively maintained, ensuring the safety and smooth operation of trains.

[0037] However, in actual operation, train wheels exert long-term, high-frequency impact loads on the track and turnout structure, which can easily cause the bolted connections to loosen. Once the bolts loosen, their axial preload will decrease significantly, leading to displacement or misalignment of the connection, which in turn affects the overall structural stability of the track and turnout, and in severe cases may even endanger train operation safety.

[0038] Therefore, based on the problems existing in the prior art, there is an urgent need for a stable, reliable, easy-to-install, and easy-to-maintain anti-loosening device for bolt connections in railway track and turnout systems. This device can effectively prevent bolt loosening caused by vibration and impact, ensuring that the bolt connections always maintain a good locking state. This utility model provides a railway anti-loosening device with good vibration resistance and self-locking capability, capable of maintaining the reliability of bolt connections under complex working conditions, thereby improving the safety and service life of the track system.

[0039] For details, please refer to Figures 1 to 3 The railway anti-loosening device 10 includes a first anti-loosening component 100 and a second anti-loosening component 200.

[0040] The first anti-loosening component 100 is used to be installed on the turnout pad 11, and the second anti-loosening component 200 is used to be installed on the rail 12 or the rail brace 13, wherein the rail 12 and the rail brace 13 are installed on the turnout pad 11.

[0041] The first anti-loosening component 100 includes a first mounting plate 110, a first bolt 120, and a first anti-rotation member 130. The first mounting plate 110 is provided with a first holding part 111 and a first mounting hole 112. The first mounting plate 110 is used to be mounted on the turnout pad 11. The first bolt 120 is provided in the first mounting hole 112 and is used to pass through the turnout pad 11. The first anti-rotation member 130 is provided with a second holding part 131 and a first limiting part 132. The first holding part 111 and the second holding part 131 engage with each other. The first limiting part 132 is sleeved on the first bolt 120 and is used to abut against the outer wall of the first bolt 120.

[0042] It should be noted that the first holding part 111 is in the shape of a boss, the second holding part 131 is in the shape of a slot, and the first limiting part 132 is in the shape of annular serrations.

[0043] As can be seen, in this embodiment, installing the first anti-loosening component 100 on the turnout pad 11 not only effectively fixes the turnout pad 11 by threading the first bolt 120 with the turnout pad 11, but also provides a first mounting plate 110 between the turnout pad 11 and the first bolt 120. The first mounting plate 110 and the first anti-rotation member 130 are in a clamping engagement state, so that the first limiting part 132 is sleeved on the first bolt 120 and abuts against the head side wall of the first bolt 120, thus effectively achieving the anti-loosening effect of the bolt. Moreover, by setting the second anti-loosening component 200 on the rail brace 13 or directly on the rail 12, the rail brace 13 or the turnout rail 12 can also be effectively fixed and play an anti-loosening role.

[0044] Therefore, the first anti-loosening component 100 and the second anti-loosening component 200 can effectively prevent the bolts or nuts 230 from loosening, so as to maintain the reliability of the bolt connection and thus improve the structural stability and safety of the track 12 system.

[0045] It should also be noted that after the first bolt 120 passes through the mounting hole on the turnout pad 11 and connects with the preset hole on the sleeper, the turnout pad 11 is fixed to the sleeper.

[0046] Furthermore, the first anti-loosening component 100 also includes a first anti-detachment component 140. The first holding part 111 and the second holding part 131 are both provided with through holes or slot structures, and the first anti-detachment component 140 passes through the first holding part 111 and the second holding part 131.

[0047] In this embodiment, the first anti-detachment member 140 is a cotter pin. By inserting the first anti-detachment member 140 into the through hole or slot structure of the first retaining part 111 and the second retaining part 131, the first retaining part 111 and the second retaining part 131 are fixedly engaged, thereby preventing the first anti-rotation member 130 from falling off the first mounting plate 110 and further ensuring the installation stability of the first anti-rotation member 130. When it is necessary to disassemble the first anti-rotation member 130, it is only necessary to remove the first anti-detachment member 140 from the first retaining part 111 and the second retaining part 131, which is convenient and efficient.

[0048] Furthermore, the first anti-loosening component 100 also includes a first washer 150, which is disposed between the first bolt 120 and the mounting plate. The first mounting plate 110 is provided with a first boss (not shown in the figure), and the first bolt 120 passes through the first mounting hole 112 and corresponds to the first boss.

[0049] In this embodiment, by providing a first boss on the first mounting plate 110, the mounting height of the head of the first bolt 120 can be greater than the height of the first holding part 111, so that the first bolt 120 can be tightened with a wrench.

[0050] Furthermore, a first washer 150 can be provided to raise the height of the first bolt 120 relative to the plane of the first mounting plate 110, thereby making the height of the side wall of the first bolt 120 relative to the plane of the first mounting plate 110 greater than the height of the first retaining part 111, thus making it easier to tighten the first bolt 120 with a wrench.

[0051] In addition, the first washer 150 can also protect and prevent the first bolt 120 from loosening.

[0052] It is understandable that either the first washer 150 or the first boss can be set arbitrarily, or both can be set simultaneously; no specific restrictions are made here.

[0053] Furthermore, one end of the first mounting plate 110 is provided with a bent portion 113, which is used to engage with the edge of the turnout pad plate 11.

[0054] In this embodiment, when the first mounting plate 110 is installed on the turnout pad 11, the bending portion 113 is engaged with the edge of the turnout pad 11, so that the first mounting plate 110 is attached to the turnout pad 11 in a snap-fit ​​posture, thereby further improving the installation stability of the first mounting plate 110.

[0055] Furthermore, the second anti-loosening component 200 includes a second mounting plate 210, a second bolt 220, a nut 230, and a second anti-rotation member 240. The second mounting plate 210 is provided with a third holding part 211 and a second mounting hole 212. The second mounting plate 210 is used to be mounted on the track 12 or the rail support 13. The second bolt 220 is provided in the second mounting hole 212 and is used to pass through the track 12 or the rail support 13. The second anti-rotation member 240 is provided with a fourth holding part 241 and a second limiting part 242. The third holding part 211 and the fourth holding part 241 engage with each other. The second limiting part 242 is sleeved on the second bolt 220 or the nut 230 and is used to abut against the outer wall of the second bolt 220 or the outer wall of the nut 230.

[0056] In this embodiment, by installing the second anti-loosening component 200 on the rail brace 13 or the turnout track 12, it can not only be effectively fixed by threading the second bolt 220 and the nut 230, but also by having the second mounting plate 210 and the second anti-rotation member 240 in a clamping engagement state, so that the second limiting part 242 is sleeved outside the second bolt 220 or the nut 230 and in an abutting state, thus effectively achieving the anti-loosening function of the second bolt 220 or the nut 230.

[0057] It should be noted that the third retaining part 211 is in the shape of a boss, the fourth retaining part 241 is in the shape of a slot, and the second limiting part 242 is in the shape of annular serrations.

[0058] Furthermore, the second anti-loosening component 200 also includes a second anti-detachment component 250, and the third holding part 211 and the fourth holding part 241 are both provided with through holes or slot structures, and the second anti-detachment component 250 passes through the third holding part 211 and the fourth holding part 241.

[0059] In this embodiment, the second anti-detachment member 250 is also a cotter pin. By inserting the second anti-detachment member 250 into the through holes or slots of the third retaining part 211 and the fourth retaining part 241, the third retaining part 211 and the fourth retaining part 241 are fixedly engaged, thereby preventing the second anti-rotation member 240 from falling off the second mounting plate 210 and further ensuring the installation stability of the second anti-rotation member 240. When it is necessary to disassemble the second anti-rotation member 240, it is only necessary to remove the second anti-detachment member 250 from the third retaining part 211 and the fourth retaining part 241, which is convenient and efficient.

[0060] It is worth mentioning that in other embodiments, the first anti-detachment component 140 and the second anti-detachment component 250 can also be other structures or components, as long as they can achieve the above-mentioned effects or functions, and no specific limitations are made here.

[0061] Furthermore, the second anti-loosening component 200 also includes a second washer 270, which is disposed between the second mounting plate 210 and the nut 230 or the second bolt 220. The second mounting plate 210 is provided with a second boss 215, and the second bolt 220 passes through the second mounting hole 212 and corresponds to the second boss 215.

[0062] In this embodiment, by providing a second boss 215 on the second mounting plate 210, the installation height of the second bolt 220 head or nut 230 can be greater than the height of the third clamping part 211, so that the second bolt 220 and nut 230 can be tightened with a wrench.

[0063] Furthermore, a second washer 270 can be provided. The second washer 270 is used to raise the height of the second bolt 220 or nut 230 relative to the plane of the second mounting plate 210, so that the height of the side wall of the second bolt 220 relative to the plane of the second mounting plate 210 is greater than the height of the third clamping part 211, thereby making it easier to tighten the second bolt 220 and nut 230 with a wrench.

[0064] In addition, the second washer 270 also serves to protect and prevent loosening of the second bolt 220 and nut 230.

[0065] It is understandable that either the second washer 270 or the second boss 215 can be set arbitrarily, or both can be set simultaneously; no specific limitation is made here.

[0066] Furthermore, the second mounting plate 210 is provided with a mounting surface 213, which is used to attach to the side wall of the track 12.

[0067] In this embodiment, the second mounting plate 210 can be directly mounted on the side wall of the track 12.

[0068] like Figure 4 As shown, in this embodiment, the second mounting plate 210 is provided with a mounting surface 213 that is adapted to the side wall of the track 12. The mounting surface 213 can be an arc surface, a plane, or a combination of an arc surface and a plane. Therefore, by attaching the mounting surface 213 to the side wall of the track 12, the second mounting plate 210 can be more stably and firmly attached to the track 12.

[0069] Furthermore, the second anti-loosening component 200 provided in this embodiment is a single-bolt anti-loosening structure. Of course, in other embodiments of this utility model, it can also be a double-bolt, triple-bolt, or multi-bolt anti-loosening structure.

[0070] Specifically, the second mounting plate 210 is provided with a plurality of second mounting holes 212, and correspondingly, there are a plurality of nuts 230, a plurality of second bolts 220 and a plurality of second anti-rotation members 240, with the plurality of nuts 230, the plurality of second bolts 220 and the plurality of second anti-rotation members 240 being provided one-to-one in the plurality of second mounting holes 212.

[0071] like Figure 5 As shown, the second mounting plate 210 is provided with two second mounting holes 212, and correspondingly, there are two nuts 230, two second bolts 220 and two second anti-rotation parts 240.

[0072] Of course, in other embodiments of this utility model, such as Figure 4 As shown, the second anti-loosening component 200 also includes a base 260, the base 260 having a groove 261, the groove 261 having a third mounting hole 262, the third mounting hole 262 being used for the second bolt 220 to pass through; the groove 261 and the mounting surface 213 are adapted to and fit together.

[0073] In this embodiment, both the groove 261 and the mounting surface 213 are arc-shaped surfaces and are compatible with each other. Therefore, the second mounting plate 210 can rotate relative to the base 260 while the arc-shaped groove 261 and the mounting surface 213 are in contact, thereby achieving the function of automatic leveling.

[0074] Furthermore, the second mounting plate 210 is provided with a first guide portion 214 on the mounting surface 213, and the groove 261 is provided with a second guide portion 263. The first guide portion 214 and the second guide portion 263 slide in cooperation to limit the sliding direction of the second mounting plate 210 in the groove 261.

[0075] In this embodiment, the relative sliding direction between the second mounting plate 210 and the base 260 can be limited by the sliding cooperation of the first guide portion 214 and the second guide portion 263, so as to ensure that the second mounting plate 210 can only rotate and level in a fixed direction.

[0076] Specifically, the first guide portion 214 has a groove structure 261, and the second guide portion 263 has a rib structure.

[0077] Of course, in other embodiments of this utility model, the base 260 is provided with a plurality of third mounting holes 262 to install a plurality of anti-loosening components, such as Figure 6 As shown, there are two third mounting holes 262. Correspondingly, a second anti-rotation component 240, a nut 230, a second bolt 220, and a second mounting plate 210 are installed in each third mounting hole 262.

[0078] Furthermore, in other embodiments of this utility model, the second anti-loosening component 200 may also be as follows: Figure 7The structural components are shown. In this embodiment, the second anti-loosening component 200 is disposed on the rail support 13, and the rail support 13 can also be installed on the guard rail.

[0079] Furthermore, in other embodiments of this utility model, the second anti-loosening component 200 may also be as follows: Figure 8 The structural components are shown. In this embodiment, the second anti-loosening component 200 is applied to the rail brace 13, and the second mounting plate 210 can be integrally formed with the base plate of the rail brace 13. The second mounting plate 210 can be provided with multiple second mounting holes 212 to accommodate double bolt, triple bolt and multi-bolt anti-loosening structures.

[0080] Furthermore, in other embodiments of this utility model, the second anti-loosening component 200 may also be as follows: Figure 9 The structural components are shown. In this embodiment, the second anti-loosening component 200 is applied to the rail brace 13, and the second mounting plate 210 can be integrally formed with the abutment plate of the rail brace 13.

[0081] In summary, this utility model provides a railway anti-loosening device 10. The first anti-loosening component 100 is installed on the turnout pad 11. This not only effectively fixes the turnout pad 11 by threading the first bolt 120 with it, but also provides a first mounting plate 110 between the turnout pad 11 and the first bolt 120. The first mounting plate 110 and the first anti-rotation member 130 engage in a locking relationship, causing the first limiting part 132 to fit over the first bolt 120 and abut against the head side wall of the first bolt 120, thus effectively preventing bolt loosening. Furthermore, installing a second anti-loosening component 200 on the rail brace 13 or directly on the track 12 can also effectively fix the rail brace 13 or the turnout track 12, and also prevent loosening. Therefore, the first anti-loosening component 100 and the second anti-loosening component 200 can effectively prevent bolts or nuts 230 from loosening, maintaining the reliability of the bolt connection and thus improving the structural stability and safety of the track 12 system.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A railway anti-loosening device, characterized in that, Including the first anti-loosening component; The first anti-loosening component includes a first mounting plate, a first bolt, and a first anti-rotation element; The first mounting plate is provided with a first retaining part and a first mounting hole. The first mounting plate is used to be mounted on the turnout pad. The first bolt is provided in the first mounting hole and is used to pass through the turnout pad. The first anti-rotation member is provided with a second retaining part and a first limiting part. The first retaining part and the second retaining part are engaged and cooperated. The first limiting part is sleeved on the first bolt and is used to abut against the outer wall of the first bolt.

2. The railway anti-loosening device according to claim 1, characterized in that, The first anti-loosening component further includes a first anti-detachment member. Both the first retaining part and the second retaining part are provided with through holes or slot structures, and the first anti-detachment member passes through the first retaining part and the second retaining part.

3. The railway anti-loosening device according to claim 1, characterized in that, The first anti-loosening component further includes a first washer, which is disposed between the first bolt and the mounting plate, and / or the first mounting plate is provided with a first boss, and the first bolt passes through the first mounting hole and corresponds to the first boss.

4. The railway anti-loosening device according to claim 1, characterized in that, One end of the first mounting plate is provided with a bent portion, which is used to engage with the edge of the turnout pad plate.

5. The railway anti-loosening device according to claim 1, characterized in that, The railway anti-loosening device further includes a second anti-loosening component, which includes a second mounting plate, a second bolt, a nut, and a second anti-rotation member. The second mounting plate is provided with a third holding part and a second mounting hole. The second mounting plate is used to be mounted on the rail or rail support. The second bolt is provided in the second mounting hole and is used to pass through the rail or rail support. The second anti-rotation member is provided with a fourth holding part and a second limiting part. The third holding part and the fourth holding part engage with each other. The second limiting part is sleeved on the second bolt or nut and is used to abut against the outer wall of the second bolt or the outer wall of the nut.

6. The railway anti-loosening device according to claim 5, characterized in that, The second anti-loosening component also includes a second anti-detachment member. Both the third and fourth retaining portions are provided with through holes or slot structures, and the second anti-detachment member passes through the third and fourth retaining portions.

7. The railway anti-loosening device according to claim 5, characterized in that, The second mounting plate is provided with a mounting surface, which is used to attach to the side wall of the track.

8. The railway anti-loosening device according to claim 7, characterized in that, The second anti-loosening component also includes a base with a groove and a third mounting hole for the second bolt to pass through; the groove and the mounting surface are adapted to and fit together.

9. The railway anti-loosening device according to claim 8, characterized in that, The second mounting plate is further provided with a first guide portion on the mounting surface, and the groove is further provided with a second guide portion. The first guide portion and the second guide portion are slidably engaged to limit the sliding direction of the second mounting plate in the groove.

10. The railway anti-loosening device according to claim 5, characterized in that, The second anti-loosening component further includes a second washer disposed between the second mounting plate and the nut or the second bolt; and / or, the second mounting plate is provided with a second boss, and the second bolt passes through the second mounting hole and corresponds to the second boss.

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