JP2014034790A - Safety rail movement preventing metal fittings - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide safety rail movement preventing metal fittings which can support a safety rail installed in a light-weight sleeper so as not to move even if a wheel is derailed from a main track.SOLUTION: Movement preventing metal fittings 20 for a safety rail 5 installed in the gauge of a main track rail 1 fixed to the top face of a light-weight sleeper 12 at prescribed intervals comprises a floor board 21 fixed to the top face of the light-weight sleeper 12 in the gauge of the safety rail 5 and a bearing member 24 with a prescribed thickness formed with a length shorter than that of the head top 11 of the safety rail 5 and extending from the top face of the floor board 21 to the body side surface 8 of the safety rail 5. The bearing member 24 has a body contact end part 25 in contact with the vertical direction center part of the body side surface 8 of the safety rail 5.

Description

  The present invention relates to a safety rail movement-preventing bracket that prevents a rail vehicle from running away when a wheel derails from a main rail.

  Conventionally, the main rails of many railway tracks have been provided using sleepers, and the main rails on the bridges are light sleepers such as wooden sleepers and synthetic sleepers (documents in this specification and claims) Among them, these wood sleepers and synthetic sleepers are collectively called “lightweight sleepers”). Further, a safety rail may be provided between the rails of the main rail to prevent the railcar (hereinafter, also simply referred to as “vehicle”) from running away when derailed. The safety rail is also provided on, for example, a Shinkansen bridge.

  As the safety rail, for example, an old main rail replaced with a new main rail may be used, and various rails such as a JIS 50 kgN rail and a 60 kg rail are used. For example, the safety rail is fixed to a light sleeper with a dog nail.

  As a prior art of this type, there is a deviation prevention device in which a rail holding plate is provided on an upper surface of a PC sleeper via an insulating plate, and a safety rail is attached to the rail holding plate with a fastening block (for example, a patent) Reference 1).

JP 2003-239202 A

  However, as described above, the safety rail fixed to the light sleeper with the dog nail may be detached from the light sleeper due to the lateral force or the like when the derailed wheel comes into contact with the dog nail. Therefore, the safety rail at the portion where the dog nail is detached may not be able to prevent the vehicle from running away by supporting a large lateral force acting on the wheels.

  In addition, the track deviation prevention device described in Patent Document 1 is a device that can be used in a section where the weight of a structure to which a safety rail is attached, such as a PC sleeper, is not a problem. It is difficult to apply in sections where it is necessary to reduce the weight by using light sleepers.

  Then, even if a wheel derails from a main line rail, the present invention aims at providing the safety rail movement prevention metal fitting which can be supported so that the safety rail provided in the light sleeper may not move.

  In order to achieve the above object, the present invention provides a safety rail movement-preventing bracket which is installed at a predetermined interval in the gauge rail of the main rail fixed to the upper surface of the light sleeper, and the gauge rail inward of the safety rail. A floor plate that is fixed to the upper surface of the lightweight sleeper, and a support member that is formed lower than the top of the safety rail and that extends from the upper surface of the floor plate toward the abdomen side of the safety rail. The member has an abdomen abutting end that abuts on a vertical central portion of the abdomen side surface of the safety rail.

  With this configuration, the abdomen side surface of the safety rail is supported by the support member of the anti-movement fitting installed inside the rail of the safety rail, so that the derailed wheel contacts the dog nail that fixes the safety rail, and some dog nails Even if it is detached, the safety rail can be stably supported by the movement preventing metal fitting to prevent the vehicle from running away.

  Further, the abdomen abutting end may be formed on a curved surface in which a contact surface with the abdomen side surface of the safety rail is curved in the vertical direction.

  With this configuration, even if the abdomen of the safety rail is bent in the gauge width direction by a large lateral force, the abdomen abutting end is in line contact with the abdomen by the thickness of the support member, and the safety rail is stabilized. Can be supported.

  The support member may have a head contact end that contacts the side surface of the head of the safety rail.

  With this configuration, the abdomen and head of the safety rail can be supported, and even if a large lateral force acts on the safety rail, the movement prevention bracket can stably support and prevent the vehicle from running away. Can do.

  Further, the head contact end portion may have a slope that inclines outward from the gauge toward the top of the head from the upper neck portion of the safety rail.

  With this configuration, even if a large lateral force acts on the safety rail, the head contact end can stably support the top of the safety rail, and a larger lateral force can be supported. it can.

  According to the present invention, even if the derailed wheel comes into contact with the dog nail that fixes the safety rail, the safety rail is supported by the movement-preventing metal fitting from the inside of the gauge. It becomes possible to aim stably.

FIG. 1 is a front view showing a state where the safety rail movement preventing metal fitting according to the first embodiment of the present invention is used. FIG. 2 is a front view of the safety rail movement preventing metal fitting shown in FIG. FIG. 3 is a plan view of the safety rail movement preventing metal fitting shown in FIG. FIG. 4 is a plan view of a track using the safety rail movement preventing metal fitting shown in FIG. FIG. 5 is a front view showing a state where the safety rail movement preventing metal fitting according to the second embodiment of the present invention is used. FIG. 6 is a front view of the safety rail movement preventing metal fitting shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, one of the safety rail movement preventing metal fittings provided at predetermined intervals along the track will be described as an example.

  As shown in FIG. 1, the safety rail 5 is provided along the main rail 1 and is disposed inward of the floor plate 3 that fixes the main rail 1 to the light sleeper 12. The main rail 1 of this embodiment is fixed to a floor plate 3 fixed to a light sleeper 12 by a spring-loaded screw nail 4 (screw spike) with a leaf spring-attached bolt 2. The safety rail 5 is fixed to the light sleeper 12 by a dog nail 6. In this example, the bottom portion 7 of the safety rail 5 is directly fixed to the light sleeper 12 with a dog nail 6.

  A safety rail movement prevention metal fitting 20 (hereinafter also simply referred to as “movement prevention metal fitting”) is provided inside the gauge between the safety rails 5. The movement preventing metal fitting 20 of the first embodiment includes a floor plate 21 fixed to the lightweight sleeper 12 and a support member 24 fixed to the upper surface of the floor plate 21 by welding or the like. The floor plate 21 is provided with a fixing hole 22, and a portion of the fixing hole 22 is fixed to the lightweight sleeper 12 with a spring-loaded screw nail 23.

  The support member 24 has an abdomen contact end 25 that contacts the abdomen side 8 of the safety rail 5 and a head contact end 26 that contacts the head side 9. The abdomen abutting end 25 abuts on the central part in the vertical direction of the abdomen side surface 8 of the safety rail 5.

  The tip of the abdomen abutting end 25 is formed on a curved surface 27 that curves in the vertical direction. The curved surface 27 is formed with a curvature R having a radius of several hundred mm, for example, and is in line contact with the abdomen side surface 8 of the safety rail 5 by the thickness. By forming the curved surface 27 with a curvature R having a radius of several hundred mm, the contact surface with the abdomen side surface 8 of the safety rail 5 is a large curved surface.

  On the other hand, the head contact end portion 26 is formed lower than the top portion of the safety rail 5, and the end surface is formed so as to contact the head side surface 9 of the safety rail 5. Further, the head contact end portion 26 is provided with an upward gradient T on a surface in contact with the head side surface 9. As the gradient T, the safety rail 5 is inclined outward from the gauge toward the top 11 from the upper neck 10. For example, the gradient T is set to 2 to 3% of about 1 / several tens of mm. By setting the gradient T to 2 to 3%, the contact angle with the head side surface 9 of the safety rail 5 can be reduced, and the head abutting end portion 26 and the head side surface 9 are in contact with each other substantially in parallel. Like to do.

  As shown in FIG. 4, the safety rail movement preventing metal fitting 20 is provided in the center direction of the gauge of the safety rail 5. In this example, safety rail movement preventing metal fittings 20 are provided at the left and right positions of the same lightweight sleeper 12. Moreover, in this figure, the safety rail movement prevention metal fitting 20 is provided for every eight light sleepers 12. The interval at which the safety rail movement preventing metal fitting 20 is provided may be determined according to the condition of the track (for example, a curved track), the traveling speed of the railway vehicle, and the like.

  According to the safety rail movement preventing metal fitting 20 of the first embodiment configured as described above, as shown in FIG. 1, the wheel W derails from the main rail 1 and comes into contact with the safety rail 5. Even if the lateral force F acts, the safety rail 5 is fixed to the light sleeper 12 by the dog nail 6 and supported by the safety rail movement prevention metal fitting 20 from the inside of the gauge. It is possible to prevent the vehicle from running away from the track by supporting the rail 5.

  In particular, even if a large lateral force is applied, the abdomen side surface 8 and the head side surface 9 of the safety rail 5 are supported by the safety rail movement preventing metal fitting 20, so that the stable movement of the safety rail 5 can be prevented. it can.

  Moreover, even if some of the dog nails 6 fixing the safety rail 5 are removed by the derailed wheel W, the safety rail 5 is moved inward between the gauges by the safety rail movement preventing metal fitting 20 provided at a predetermined interval. Therefore, it is possible to prevent the vehicle from running away stably by the safety rail 5.

  Next, the safety rail movement preventing metal fitting 30 according to the second embodiment will be described with reference to FIGS. The safety rail movement prevention metal fitting 30 according to the second embodiment is an example in which the head contact end portion 26 in the safety rail movement prevention metal fitting 20 of the first embodiment is not provided. The same components as those of the safety rail movement preventing metal fitting 20 of the first embodiment are denoted by the same least significant digit symbols, and the description thereof is omitted.

  As shown in the figure, this movement preventing metal fitting 30 is provided with only the abdomen abutting end 35 on the support member 34 provided on the upper part of the floor board 31. Since the other structure is the same as that of the safety rail movement preventing metal fitting 20 of the first embodiment, a detailed description is omitted. The movement preventing metal fitting 30 of the second embodiment is used when a structure cannot be arranged on the side surface portion of the head of the safety rail 5.

  Also with the safety rail movement preventing metal fitting 30 of the second embodiment configured as described above, as shown in FIG. 5, the wheel W derails from the main rail 1 and comes into contact with the safety rail 5. Even if the force F acts, the safety rail 5 is fixed to the light sleeper 12 by the dog nail 6 and supported by the safety rail movement prevention metal fitting 30 from the inside of the gauge. It is possible to prevent the vehicle from running away from the track by supporting the rail 5.

  Moreover, even if some of the dog nails 6 fixing the safety rail 5 are removed by the derailed wheel W, the safety rail 5 is moved inward between the gauges by the safety rail movement preventing metal fitting 30 provided at a predetermined interval. Therefore, it is possible to prevent the vehicle from running away stably by the safety rail 5.

  Note that the safety rail movement prevention metal fitting 20 according to the first embodiment and the safety rail movement prevention metal fitting 30 according to the second embodiment may be properly used at the place of use. The track may be properly used like the safety rail movement prevention metal fitting 30 or the like. Moreover, you may use both the movement prevention metal fittings 20 and 30 according to conditions, such as a place of use, in the same track | orbit.

  Furthermore, the above-described embodiment shows an example, and various modifications can be made without departing from the gist of the present invention, and the present invention is not limited to the above-described embodiment.

  The safety rail movement preventing metal fitting according to the present invention can be used when it is desired to stably prevent the movement of the safety rail disposed along the main rail provided on the light sleeper.

1 main rail
5 Safety rail
6 Dog nail
7 Bottom
8 Abdomen side
DESCRIPTION OF SYMBOLS 9 Head side surface 10 Upper neck part 11 Head top part 12 Light sleeper 20 Safety rail movement prevention metal fittings 21 Floor board 22 Fixing hole 23 Spring-loaded screw nail 24 Support member 25 Abdominal part contact edge part 26 Head contact edge part 27 Curved surface 30 Safety rail movement prevention bracket 31 Floor plate 32 Fixing hole 33 Screw nail 34 with spring 34 Support member 35 Abdomen contact end 37 Curved surface
F lateral force
R curvature
T gradient

Claims (4)

A safety rail movement-preventing bracket that is installed with a predetermined interval inside the gauge rail of the main rail fixed to the upper surface of the lightweight sleeper,
A floor plate to be fixed to the upper surface of the light sleeper in the gauge between the safety rails;
A support member having a predetermined thickness formed lower than the top of the safety rail and extending from the upper surface of the floor plate toward the abdomen side of the safety rail,
The safety rail movement-preventing bracket according to claim 1, wherein the support member has an abdomen abutting end that abuts against a vertical central portion of the abdomen side surface of the safety rail.   The safety rail movement prevention metal fitting according to claim 1 in which said abdomen contact end part is formed in the curved surface where the contact surface with the abdomen side of a safety rail curves in the perpendicular direction.   The safety rail movement prevention metal fitting according to claim 1 or 2 in which said support member has a head contact end part which contacts the head side of said safety rail.   The safety rail movement preventing metal fitting according to claim 3, wherein the head contact end portion has a slope that inclines outward from the gauge toward the top of the head from the upper neck portion of the safety rail.

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