JP2012012772A - Wheel guard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheel guard device capable of providing a guardrail on a track with a flat upper surface such as a composite sleeper and preventing a wheel from derailing from a main rail.SOLUTION: For a base plate 2 to be fixed on the track with a flat upper surface, a main rail fixing part 3 for fixing the main rail 5 disposed on the outer side of the track and a guardrail fixing part 4 for fixing the guardrail 14 disposed on the inner side of the track are continuously and integrally formed. The guardrail 14 is provided with an outer side locking part 15 for preventing derailing of the wheel W. The main rail fixing part 3 is provided with a fixing member for fixing the main rail 5 and outer side fixing holes 40 to be fixed to the track, and the guardrail fixing part 4 is provided with a fixing member for disposing the guardrail 14 along the main rail 5 and an inner side fixing hole 41 to be fixed to the track. The base plate 2 is integrally provided with a reinforcing part 42 which is extended from the main rail fixing part 3 to the guardrail fixing part 4 and projected downward from a base plate surface.

Description

  The present invention relates to a wheel guard device for preventing derailment disposed along a main rail on a railway track.

  2. Description of the Related Art Conventionally, when a train travels on a curved track or the like, a guard member that guards a wheel from being detached from a main rail is provided in parallel with the main rail.

  As this type of prior art, the present applicant has applied for a wheel guard device that prevents the wheel from derailing and prevents the train from deviating from the track even if the wheel is derailed (for example, Patent Document 1). reference). This wheel guard device is provided on the upper surface of a prestressed concrete sleeper (hereinafter referred to as “PC sleeper”), and the guard rail fixed to the wheel guard device is disposed along the main rail. In addition, the train is prevented from deviating from the track even if the wheel is derailed.

  In addition, as another prior art, the first guard means protrudes from the derailment prevention rail laid at intervals along the main rail so as not to be derailed even if a huge earthquake occurs, The derailment prevention rail which protrudes the 2nd guard means from the surface of the outer end of this 1st guard means, and tries to prevent derailment of a wheel between these 1st guard means and the 2nd guard means Yes (see, for example, Patent Document 2).

JP 2009-138405 A JP 2006-316552 A

  By the way, in recent years, PC sleepers have become widespread, but synthetic sleepers and wood sleepers having a flat upper surface are used on bridges and the like. And even in a portion where such synthetic sleepers and wood sleepers are arranged, it is desired to provide a guard member as described above to prevent derailment. Moreover, it is desirable to provide a guard member using the sleeper without replacing the existing sleeper.

  Furthermore, it is desirable to arrange a guard member on a main rail where the upper surface is arranged on a flat track such as an existing slab track.

  However, for example, as shown in FIG. 9, in the case of a synthetic sleeper or a wooden sleeper, sleepers 100 provided with fixing holes for screw nails 101 at predetermined positions are arranged on the track R at predetermined intervals, and the sleepers A base plate 103 for fixing the main rail 102 is fixed to a fixing hole of the base 100, and the main rail fixing bracket 105 is fixed to a bracket fixing bolt 104 projecting upward from the base plate 103. The rail 102 is fixed to the sleeper 100. Therefore, if a large number of bolt holes for newly fixing the guard member are provided close to the fixing hole (the same position as the screw nail 101) provided for fixing the base plate 103, the strength of the sleeper may be lowered. In addition, there is a risk that durability may be reduced. For example, in the case of synthetic sleepers, the existing fixing hole is filled with a synthetic resin material, and then a new fixing hole is cut, but the new fixing hole is close to the filled fixing hole. Further, there is a possibility that the strength is lowered around the hole-filled portion and the new fixing hole, and the resistance to pulling out the screw nail is lowered and the durability is lowered. Furthermore, when the base plate 103 is enlarged and the base plate 103 is deformed by the acting bending moment, the bolt pull-out resistance is reduced. Therefore, it is difficult to realize a guard material in parallel along the main rail in existing synthetic sleepers, wood sleepers, and the like.

  In addition, in the case of a slab track, since a member (rebar etc.) for maintaining the track strength is provided in a portion other than the fixed hole of the main rail, it is difficult to provide a new bolt hole at a close position, It has become difficult to realize.

  In addition, the said patent document 1 is applicable in PC sleeper etc., and is not applicable to a synthetic sleeper or a wooden sleeper. Moreover, when trying to apply Patent Document 2 to a synthetic sleeper, as described above, the strength of the synthetic sleeper due to a new bolt hole may be reduced, and the bolt pull-out resistance may be reduced.

  Therefore, according to the present invention, a guard rail can be provided on a track having a flat upper surface such as a synthetic sleeper, and a wheel derails from the main rail while suppressing a decrease in strength of the synthetic sleeper and a bolt pulling resistance. It is an object of the present invention to provide a wheel guard device that can prevent the above.

  In order to achieve the above object, the present invention provides a wheel guard device that is arranged on a track having an upper surface to prevent derailment of a train, and includes a base plate that is fixed on the track. A main rail fixing portion for fixing the main rail arranged outside the track and a guard rail fixing portion for fixing the guard rail arranged inside the track are integrally formed. The guard rail is the main rail. An outer locking portion for locking the wheel so as to prevent the wheel from derailing inwardly, and the main rail fixing portion includes a fixing member for fixing the main rail and the main rail fixing. An outer fixing hole for fixing the portion side to the track, the guard rail fixing portion fixing the guard rail along the main rail, and fixing the guard rail fixing portion side to the track. An inner fixing hole, and the base plate integrally includes a reinforcing portion extending from the main rail fixing portion to the guard rail fixing portion and protruding upward or downward intersecting the base plate surface. Yes. In this specification and claims, “the track having a flat upper surface” refers to a track on which main rails arranged side by side are laid, the track having an upper surface formed by a flat sleeper, and the upper surface having a flat surface. A slab orbit. The “base plate surface” refers to the upper surface or the lower surface of the base plate.

  As a result, the base plate can be fixed on the track whose upper surface is flat, and the guard rail can be arranged along the main rail by fixing the guard rail to the guard rail fixing portion integrated with the main rail fixing portion. Since the reinforcing part that improves the moment of inertia in the direction in which the load acts is firmly held by the integrally formed base plate, the tensile force acting on the bolt for fixing the base plate is reduced. Thus, the number of bolts can be reduced to suppress the decrease in sleeper strength, and the derailment of the wheel can be prevented on a track having a flat upper surface. Moreover, even if it is an existing synthetic sleeper or a wooden sleeper, the existing fixing hole is used for the outer fixing hole on the main rail fixing part side, so that it acts on the bolt without reducing the strength of the sleeper or the like. It is possible to arrange the guard rail in parallel with the main rail while suppressing the drop resistance.

  The reinforcing portion may be formed of a plate material extending from an outer end portion of the main rail fixing portion of the base plate to an inner end portion of the guard rail fixing portion. If it does in this way, a reinforcement part can be easily formed in a base board.

  Furthermore, the fixed surface of the base plate may be formed in the width dimension of the sleeper on the track, and the reinforcing portion may protrude downward along the side surface of the sleeper. In this way, since the reinforcing part protruding downward from the base plate is arranged along the side surface of the sleeper, the strength of the base plate is improved and the arrangement is stabilized with the wheel guard device fixed to the sleeper. Can be achieved.

  Further, the outer fixing hole may be provided in the same positional relationship as the fixing hole already provided on the track. In this way, by fixing the outer fixing hole for fixing the base plate to the track to the fixing hole already installed on the track, the wheel guard device can be mounted on the track whose upper surface is flat without reducing the strength of the track. Can be easily provided.

  Further, the guardrail fixing portion is supported by a fixing portion formed integrally with the base plate, and a horizontal rotation shaft disposed on the fixing portion, and is directed inward of the track around the rotation shaft. And a movable part that can be rotated in a movable manner, and a holding part that holds the guard rail at a position away from the rotational axis of the movable part. In this way, the guard rail can be rotated toward the inside of the track integrally with the guard rail fixing portion around the rotation axis, and the guard rail can be rotated toward the inside of the track along the main line rail. It can be easily rearranged to the retracted position.

  In addition, the guard rail includes an inner locking portion at an upper end for locking the outer locking portion and a departure preventing protrusion provided at a lower portion of the train to prevent the train from deviating outward from the track. In addition, the guard rail holding portion and the guard rail fixing portion holding portion are formed in a T-shaped cross section having a holding portion protruding downward, and the guard rail holding portion and the holding portion of the guard rail are positioned in the vertical direction. May be provided. In this way, even if the guardrail receives a large load, it can maintain a stable locking state with the uneven strips, and prevent the derailed train from deviating toward the outside of the track as well as preventing the derailment of the wheels. Can do.

  According to the present invention, a guard rail is provided on a track having a flat upper surface such as a synthetic sleeper to suppress a decrease in strength of the synthetic sleeper or the like and a decrease in resistance to pulling out the bolt, thereby preventing derailment of the wheel. Is possible.

It is drawing of the wheel guard apparatus which concerns on 1st Embodiment of this invention, (a) is a top view, (b) is a front view, (c) is II sectional drawing shown to (b). It is a front view of the sleeper track | orbit provided with the wheel guard apparatus shown in FIG. It is drawing of the wheel guard apparatus which concerns on 2nd Embodiment of this invention, (a) is a top view, (b) is a front view. It is drawing of the wheel guard apparatus which concerns on 3rd Embodiment of this invention, (a) is a top view, (b) is a front view. It is drawing of the wheel guard apparatus which concerns on 4th Embodiment of this invention, (a) is a top view, (b) is a front view, (c) is VV sectional drawing shown to (b). It is drawing of the wheel guard apparatus which concerns on 5th Embodiment of this invention, (a) is a top view, (b) is a front view. It is a front view which shows the state which is preventing that a traveling train derails from a main line rail with the wheel guard apparatus shown in FIG. FIG. 8 is a front view showing a state where the traveling train shown in FIG. 7 is prevented from derailing from the main rail and deviating outward from the track. It is a top view which shows an example of the part which has fixed the conventional main line rail to the sleeper track.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this specification and claims, the assembled state of the wheel guard device shown in FIG. 2 will be described as the front, the middle direction of the main rails arranged side by side is inward, and both outer directions of the main rails are Is called outward. Further, in the following embodiment, even when a train having a departure prevention protrusion at the lower part derails, the inner engagement that locks the departure prevention protrusion to prevent the train from deviating outward from the track An example of a guardrail having a portion will be described.

  As shown in FIGS. 1 (a) and 1 (b), a wheel guard device 1 according to the first embodiment is a wheel guard device 1 provided in a sleeper 90 such as a synthetic sleeper or a wooden sleeper. The wheel guard device 1 is provided with a main rail fixing portion 3 on the outer portion of the base plate 2 and a guard rail fixing portion 4 on the inner portion. The main rail fixing portion 3 and the guard rail fixing portion 4 Is formed on a continuous and integral base plate 2.

  The main rail fixing portion 3 is formed by fixing a main rail fixing bracket 7 which is a fixing member of the main rail 5 to a metal fixing bolt 6 provided on both sides of the main rail 5 with nuts 8. The main rail 5 is pressed and fixed toward the base plate 2 by the elastic force.

  On the other hand, the guardrail fixing portion 4 is formed integrally with the base plate 2 and protrudes upward, a movable portion 11 supported on the fixing portion 10 by a horizontal rotation shaft 13, The movable portion 11 has a holding portion 12 that holds the guard rail 14 fixedly. The fixed portion 10, the movable portion 11, and the holding portion 12 constitute a fixing member for the guard rail 14.

  Further, the guard rail 14 of this embodiment has a substantially T-shaped cross section, and an outer latch that prevents the wheel W from derailing toward the inner side of the main rail 5 at the outer end of the horizontal portion. The inner end is provided with an inner locking portion 16 for locking the derailment prevention protrusion (FIG. 8) of the derailed train and preventing the train from deviating outward from the track. . A holding portion 17 of the guard rail 14 is provided in the vertical portion, and a recess 18 extending in the longitudinal direction of the guard rail is formed on the inner surface of the holding portion 17. The guard rail 14 is provided substantially parallel to the main rail 5 with a predetermined distance.

  The fixed portion 10 is formed integrally with the base plate 2, and is formed integrally by casting or the like when the base plate 2 is formed, for example. On the upper surface of the fixed portion 10, a concave portion 20 that supports a load from the movable portion 11 is provided in a substantially central portion. In addition, the rotation shaft 13 that rotatably supports the movable portion 11 is provided in the inner portion of the track of the fixed portion 10 located on the left side of the drawing.

  The movable part 11 can be rotated inward of the track around a rotation shaft 13 provided in the fixed part 10 (FIG. 2). The movable part 11 is normally fixed to the fixed part 10 by a connecting bolt 21. The connecting bolt 21 has a T-shaped head portion 22, and the head portion 22 is inserted into the upper elongated hole 23 of the movable portion 11 and locked to the lower surface of the bolt hole 24 of the fixed portion 10. The movable part 11 can be fixed to the fixed part 10 by tightening the nut 25 to the connecting bolt 21. If the nut 25 is removed, such a movable part 11 is provided with a guard rail 14 held on the side opposite to the rotation shaft about the rotation shaft 13 as will be described later. It can be rearranged to a retreat position I retreated from O to the inside of the track.

  In addition, a holding surface 26 that forms the holding portion 12 of the guard rail 14 is formed at the end of the movable portion 11 in the counter-rotating axis direction. The holding surface 26 is provided with a ridge 27 that engages with the recess 18 of the guardrail 14.

  Further, a convex portion 28 for transmitting a load to the concave portion 20 of the fixed portion 10 is provided at a substantially lower central portion of the movable portion 11. By engaging the convex portion 28 and the concave portion 20 of the fixed portion 10, a large horizontal load acting on the movable portion 11 is transmitted from the convex portion 28 having a wide contact area to the concave portion 20 and supported. A large load is prevented from acting on the rotating shaft 13.

  The holding portion 12 holds the guard rail 14 on the movable portion 11 by the holding member 30 and is fixed in a state where the concave strip 18 provided on the guard rail 14 is fitted on the convex strip 27 of the movable portion 11 as described above. ing. As a result, the guard rail 14 is fixed and held at the end of the movable portion 11. The holding member 30 is fixed to the movable part 11 with bolts and nuts 31.

  As described above, the guard rail 14 is fixed to the holding surface 26 of the movable portion 11 by the holding member 30 of the holding portion 12, and the movable portion 11 is fixed to the fixed portion 10 by the connecting bolt 21. The portion 11, the holding portion 12, and the guard rail 14 are integrated.

  The base plate 2 has a fixing hole 40 for fixing the main rail fixing part 3 side to the sleeper 90 and having the same positional relationship as a conventional fixing hole ("fixing" in the document of this specification and claims). The “hole” includes a bolt hole such as a pilot hole into which the screw nail is screwed) and a fixing hole 41 for fixing the guardrail fixing portion 4 side to the sleeper 90 in addition to the fixing hole 40. A fixing hole 40 provided on the main rail fixing part 3 side is an outer fixing hole, and a fixing hole 41 provided on the guard rail fixing part 4 side is an inner fixing hole.

  The fixing holes 40 and 41 are fixed by screwing a spring-loaded screw nail 91 that is generally used for fixing to the sleeper 90. In this embodiment, the fixing hole 40 uses four screw nails 91 that fix the main rail 5 in the same positional relationship as the conventional one, and the fixing hole 41 newly fixes the guard rail fixing part 4 side. The sleeper 90 is fixed to the sleeper 90 by three screw nails 91. Accordingly, the four fixing holes 40 provided in the outer portion of the base plate 2 are in the same positional relationship as the existing fixing holes, thereby reducing the strength due to the provision of the fixing holes 40 in the outer portion of the sleeper 90. It is preventing. The number of screw nails 91 for fixing the guardrail fixing portion 4 may be two, four, or other numbers.

  The base plate 2 is formed in a rectangular shape in plan view, and the reinforcing portion 42 is such that the width dimension is in the longitudinal direction of both end portions in the width direction and the inner dimension is the width dimension of the sleeper 90. It is formed in the width dimension which can provide. The reinforcing portion 42 of this embodiment has a plate shape extending from the main rail fixing portion side outer end portion of the base plate 2 to the guard rail fixing portion side inner end portion, and as shown in FIG. It is the board material projected toward the lower part from. Thus, by providing the reinforcement part 42, arrangement | positioning of the main rail 5 and the process to the base board 2 can be performed easily. In the case of this configuration, the width dimension of the base plate 2 is larger than the width dimension of the sleeper 90 by the thickness of the reinforcing portion 42.

  Therefore, according to the wheel guard device 1, in addition to the fixing holes 40 (outer fixing holes) having the same positional relationship as the conventional fixing holes, the fixing holes 40 for the three screw nails that fix the guard rail fixing portion 4 side. By adding the pilot hole 94 to the (inner fixing hole) and the sleeper 90, it becomes possible to provide the wheel guard device 1 while suppressing the strength reduction of the sleeper 90 having a flat upper surface. Thus, as will be described later, it is possible to prevent derailment of the wheels W and to prevent deviation from the train track even when derailment occurs.

  Moreover, since the bending moment is increased by improving the secondary moment of the section in the direction in which the load of the base plate 2 acts by the reinforcing portion 42 provided on the base plate 2, a large load is applied to the guard rail 14 when preventing derailment, which will be described later. Even if this acts, the deformation of the base plate 2 can be suppressed, whereby a predetermined interval S between the inner surface of the wheel W and the outer locking portion 15 of the guard rail 14 described below can be stably secured. The strength of the sleeper 90 for fixing the base plate 2 can be reduced by reducing the tensile force acting on the screw nail 91 for fixing the base plate 2 to suppress the number of screw nails 91, that is, the number of the pilot holes 94. Reduction and decrease in resistance to pulling out bolts are suppressed.

  In addition, the reinforcing part 42 is projected downward from both ends of the base plate 2 in the width direction so as to sandwich the side surface of the sleeper 90, thereby preventing derailment of the wheel W with the guard rail 14 as will be described later. When the departure of the derailment train C is to be prevented, the base plate 2 can be integrated with the sleeper 90 and receive a load.

  As shown in FIG. 2, the wheel guard device 1 is disposed at both ends of the sleeper 90, and supports the main rail 5 with the main rail fixing portion 3 at the outer portion and the guard rail fixing portion 4 at the inner portion. The guard rail 14 is fixed to. The wheel guard device 1 in this state is disposed in a state where the inner surface of the wheel W on the main rail 5 and the outer locking portion 15 of the guard rail 14 are at a predetermined interval S. The predetermined interval S is set to an interval S at which the other wheel W is not derailed in a state where the wheel W (see FIG. 7) is guarded by the outer locking portion 15 of the guard rail 14. The wheel guard device 1 is fixed to several sleepers 90 arranged on the track, and a guard rail 14 having a predetermined length is supported by the plurality of wheel guard devices 1 along the main rail 5. It is installed side by side.

  Furthermore, in this embodiment, since the movable part 11 of the guardrail fixing part 4 can be turned inward, as described above, the guardrail 14 is positioned at the anti-wheel-release position O (solid line) along the main rail 5. Position) and a retreat position I (two-dot chain line position) retreated inward of the track. In the state where the guard rail 14 is disposed at the anti-derailing position O, the distance S at which the inner surface of the wheel W and the outer locking portion 15 of the guard rail 14 are not deviated is set.

  Thereby, as shown in FIG. 7 to be described later, even if the wheel W tries to derail from the main rail 5, it is possible to prevent the inner surface of the wheel W from being derailed by being guarded by the guard rail 14. In addition, the function of the inner side latching part 16 which prevents that it deviates outside a track | truck when a train derails is mentioned later.

  Further, as in this embodiment, by rotating the guard rail 14 toward the inside of the track so as to be in the retracted position I, the guard rail 14 is retracted to a position away from the main rail 5 and rail correction is performed. It becomes possible to perform work etc. quickly.

  A wheel guard device 50 according to the second embodiment shown in FIGS. 3A and 3B is an example in which the guard rail 14 in the wheel guard device 1 according to the first embodiment described above is fixed to the wheel removal preventing position O. In addition, the same code | symbol is attached | subjected to the structure same as 1st Embodiment, and the detailed description is abbreviate | omitted.

  As shown in the figure, the guardrail fixing portion 4 is provided with a fixing portion 52 that is integrally formed with the base plate 51 and protrudes upward, and the holding surface 26 of the fixing portion 52 is held by the holding member 30 of the holding portion 12. A guardrail 14 is held. Other configurations in this embodiment are the same as those in the first embodiment described above.

  Therefore, also with the wheel guard device 50 of this embodiment, in addition to the fixing hole 40 (outside fixing hole) having the same positional relationship as the conventional fixing hole, fixing for the three screw nails fixing the guard rail fixing portion 4 side is also possible. By adding the hole 41 (inner fixing hole) and the pilot hole 94 to the sleeper 90, it is possible to provide the wheel guard device 50 while suppressing the strength of the sleeper 90 having a flat upper surface.

  Moreover, in this embodiment, the reinforcing portion 42 provided on the base plate 51 improves the bending moment by improving the cross-sectional moment in the direction in which the load of the base plate 51 acts. Even when a large load is applied to the guard rail 14, the deformation of the base plate 51 can be suppressed, whereby the predetermined interval S (FIG. 2) can be stably secured and the base plate 51 can be fixed. The tensile force acting on the screw nails 91 is reduced to reduce the number of screw nails 91, that is, the number of the pilot holes 94, thereby suppressing the decrease in the strength of the sleepers 90 for fixing the base plate 51 and the decrease in the bolt pull-out resistance force. ing.

  In addition, in this embodiment, the reinforcing portion 42 is protruded downward from both ends of the base plate 51 in the width direction so as to sandwich the side surface of the sleeper 90, so that the guard rail 14 and the wheel W can be When the derailment is prevented and the derailment train C is prevented from deviating, the base plate 51 can receive the load integrally with the sleeper 90.

  The wheel guard device 60 of the third embodiment shown in FIGS. 4 (a) and 4 (b) is a wheel guard device at a position where a branching device is provided. Since this embodiment is different only in the wheel guard device 1 of the first embodiment described above and the fixing portion of the main rail, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is provided. Is omitted.

  As shown in the figure, the main rail fixing portion 3 is fixed by fixing the main rail 5 by fixing the main rail fixing bracket 61 with bolts 62 as in the prior art, and by a screw 91 at a position close to the main rail fixing bracket 61. Fixing is performed.

  On the other hand, similarly to the first embodiment described above, the guardrail fixing portion 4 is formed integrally with the base plate 63 and protrudes upward, and the fixing portion 10 is supported by a horizontal rotation shaft 13. The movable part 11 is supported, and a holding part 12 that holds the guard rail 14 fixed to the movable part 11 is provided. Since the fixed portion 10, the movable portion 11, and the holding portion 12 are the same as those in the first embodiment described above, the same reference numerals as those in the first embodiment are given and the description thereof is omitted. The base plate 63 is provided with three fixing holes 41 (inner fixing holes) for fixing the guardrail fixing portion 4 side to the sleeper 90.

  Therefore, also with the wheel guard device 60 of this embodiment, in addition to the fixing hole 40 (outer fixing hole) in the same positional relationship as the conventional fixing hole, fixing for the three screw nails fixing the guard rail fixing portion 4 side is also possible. By adding the hole 41 (inner fixing hole) and the pilot hole 94 to the sleeper 90, it is possible to provide the wheel guard device 60 while suppressing a decrease in the strength of the sleeper 90 having a flat upper surface.

  In addition, this embodiment also increases the bending strength by improving the secondary moment of the section in the direction in which the load of the base plate 63 acts by the reinforcing portion 42 provided on the base plate 63. Even if a large load is applied to the guard rail 14, the deformation of the base plate 63 can be suppressed, whereby the predetermined interval S (FIG. 2) can be stably secured and the base plate 63 can be fixed. The tensile force acting on the screw nails 91 is reduced to reduce the number of screw nails 91, that is, the number of pilot holes 94, thereby suppressing the decrease in the strength of the sleepers 90 for fixing the base plate 63 and the decrease in the bolt pull-out resistance force. ing.

  In addition, in this embodiment, the reinforcing portion 42 is provided to project downward from both ends of the base plate 63 in the width direction so as to sandwich the side surface of the sleeper 90, so that the guard rail 14 and the wheel W can be When the derailment is prevented and the derailment train C is prevented from deviating, the base plate 63 can receive the load integrally with the sleeper 90.

  A wheel guard device 70 according to a fourth embodiment shown in FIGS. 5A and 5B is a wheel guard device provided on a slab track.

  As shown in the figure, the main rail fixing portion 3 is fixed to the main rail 5 by fixing the main rail fixing bracket 71 to the base plate 73 with bolts and nuts 72 and the proximity of the main rail fixing bracket 71 as in the prior art. The position fixing bolt 74 is fixed to the slab track 93. A bolt hole 75 of the fixing bolt 74 is an outer fixing hole.

  On the other hand, similarly to the first embodiment described above, the guardrail fixing portion 4 is formed integrally with the base plate 73 and protrudes upward, and the fixing portion 10 has a horizontal rotation shaft 13. The movable part 11 is supported, and a holding part 12 that holds the guard rail 14 fixed to the movable part 11 is provided. Since the fixed portion 10, the movable portion 11, and the holding portion 12 are the same as those in the first embodiment described above, the same reference numerals as those in the first embodiment are given and the description thereof is omitted. The base plate 73 is provided with two bolt holes 76 (inner fixing holes) for fixing the guardrail fixing portion 4 side to the slab track 93.

  Therefore, also with the wheel guard device 70 of this embodiment, in addition to the bolt holes 75 (outer fixing holes) having the same positional relationship as the conventional bolt holes, the two bolt holes 76 (inner side) for fixing the guard rail fixing portion 4 side. By adding the bolt holes 95 to the fixing holes) and the slab track 93, the wheel guard device 70 can be provided while suppressing the strength reduction of the slab track 93 having a flat upper surface.

  A reinforcing portion 77 is provided in the longitudinal direction of the base plate 73 so as to protrude upward from the base plate 73. The reinforcing portion 77 of this embodiment has a plate shape extending from the main rail fixing portion side outer end portion of the base plate 73 to the guard rail fixing portion side inner end portion, and as shown in FIG. It is the board | plate material projected toward the upper direction orthogonal to. In FIG. 5 (b), the front side reinforcing portion 77 is removed.

  In addition, in this embodiment, the reinforcing portion 77 provided on the base plate 73 improves the secondary moment in the direction in which the load of the base plate 73 acts to increase the bending strength. Even if a large load is applied to the guard rail 14, the deformation of the base plate 73 can be suppressed, whereby a predetermined interval S (FIG. 2) can be stably secured and the base plate 73 can be fixed. By reducing the tensile force acting on the bolts 74 and suppressing the number of bolts 74, that is, the number of bolt holes 95, it is possible to suppress a decrease in strength of the slab track 93 that fixes the base plate 73 and a decrease in bolt pull-out resistance. it can.

  Moreover, in this embodiment, the base plate 73 is integrated with the slab track 93 when the reinforcement portion 77 prevents the derailment of the wheels W and the derailment of the derailment train C as will be described later. Can receive a load.

  A wheel guard device 80 according to a fifth embodiment shown in FIGS. 6 (a) and 6 (b) is a wheel guard device used for the expansion joint. In this embodiment, a main rail fixing bracket 81 that fixes the main rail 5 is configured to be slidable in the rail direction. The main rail 5 is fixed by fixing the main rail fixing bracket 81 to the base plate 83 with bolts and nuts 82.

  The base plate 83 of this embodiment is formed so as to extend inward of the guardrail fixing portion 4, and three fixing holes 85 (inner fixing holes) are provided in the inner portion thereof. In this embodiment, the two fixing holes 84 (outer fixing holes) provided in the outer part of the base plate 83 are in the same positional relationship as the existing fixing holes, so that the outer part of the sleeper 90 is Strength reduction due to the provision of fixing holes is prevented.

  Therefore, also with the wheel guard device 80 of this embodiment, in addition to the fixing hole 84 (outer fixing hole) having the same positional relationship as the conventional fixing hole, fixing for the three screw nails fixing the guard rail fixing portion 4 side is also possible. By adding the hole 85 (inner fixing hole) and the pilot hole 94 to the sleeper 90, it is possible to provide the wheel guard device 80 while suppressing the strength of the sleeper 90 having a flat upper surface.

  In addition, this embodiment also increases the bending moment by improving the secondary moment of the section in the direction in which the load of the base plate 83 acts by the reinforcing portion 42 provided on the base plate 83. Even if a large load is applied to the guard rail 14, the deformation of the base plate 83 can be suppressed, whereby a predetermined interval S (FIG. 2) can be stably secured and the base plate 83 can be fixed. The tensile force acting on the screw nails 91 is reduced to suppress the number of screw nails 91, that is, the number of the pilot holes 94, thereby suppressing the decrease in the strength of the sleepers 90 fixing the base plate 83 and the decrease in the bolt pull-out resistance force. be able to.

  In addition, in this embodiment, the reinforcing portion 42 is provided so as to protrude downward from both ends of the base plate 83 in the width direction so as to sandwich the side surface of the sleeper 90. When the derailment of the derailment train C is prevented and the base plate 83 is integrated with the sleeper 90, the load can be received.

  As described above, according to each of the wheel guard devices 1, 50, 60, 70, 80, the sleeper 90 having a flat upper surface, the slab track 93, and the like are prevented from lowering the strength of these sleepers and the like. It is possible to provide a wheel guard device provided with a guard rail 14 that can prevent derailment of W and departure of a derailed train.

  For example, when the wheel guard device 1 of the first embodiment described above is taken as an example, as shown in FIG. 7, when a large lateral force F (in this example, the lateral force F from the right side of the figure) is applied to the train C, One wheel W (left side in the figure) rides on the main rail 5 and the other wheel W (right side in the figure) is in a state of being guarded with the inner side being in contact with the outer locking portion 15 of the guard rail 14. In this state, since the wheel W on the right side of the figure travels on the main rail 5, derailment of the wheel W can be prevented. This derailment prevention can be performed in the same way for the wheel W in the reverse direction.

  Further, according to the configuration of the first embodiment, when the wheel W comes into contact with the outer locking portion 15, the lateral force F is supported by the movable portion 11 via the holding portion 17 of the guard rail 14, and this movable portion. 11 is supported by the base plate 2, that is, the sleeper 90, from the convex portion 28 of the movable portion 11 through the concave portion 20 of the fixed portion 10 (FIG. 1), and the large lateral force F is stabilized. Can be supported.

  In addition, since the base plate 2 has the bending moment increased by increasing the secondary moment in the direction in which the load is applied by the reinforcing portion 42 during derailment or the like, the base plate 2 can be applied even when a large lateral force F is applied. This is a sleeper for fixing the base plate 2 by reducing the tensile force acting on the screw nails 91 for fixing the base plate 2 and suppressing the number of the screw nails 91, that is, the number of the pilot holes 94. It is possible to suppress a decrease in strength of 90 and a decrease in resistance to pulling out bolts.

  As shown in FIG. 8, even when the lateral force F increases and the wheel W derails beyond the guard rail 14, the departure prevention protrusion D provided at the center in the width direction of the lower part of the train C has a guard rail. 14, it is possible to prevent the train C from greatly deviating from the track R. A plurality of the departure prevention protrusions D are provided at predetermined intervals (for example, front and rear positions of each train C) in the longitudinal direction of the lower surface of the train C. The departure prevention protrusions D are connected to the inner locking portions 16. The departure of the train C can be prevented stably by locking the door. Thus, even if it derails, derailment train C can be stopped in the state where it does not contact an oncoming train. Further, such derailment prevention and departure prevention are also possible in the other wheel guard devices 50, 60, 70, 80.

  Therefore, according to the wheel guard devices 1, 50, 60, 70, 80, the guard rail 14 is provided on a track having a flat upper surface, such as a synthetic sleeper, a wooden sleeper, and a slab track, thereby preventing derailment of the wheel W. In addition, even when the wheel W is derailed, it is possible to prevent the train C from greatly deviating from the track.

  Moreover, since the wheel guard devices 1, 50, 60, 70, and 80 can be provided using the existing fixing holes 40, the guard rail 14 can be provided while maintaining the track strength such as sleepers, Since the strength of the base plates 2, 51, 63, 73, and 83 is maintained by providing the reinforcing portion 42, there is no need to change the height and arrangement of the main rail 5, and the wheel guard device 1 can be applied to many existing sleepers. 50, 60, 70, 80 can be provided.

  It is possible to combine the configurations of the above-described embodiments, and the configuration is not limited to the above-described embodiments as long as the configuration is suitable according to usage conditions and the like.

  Further, 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.

  INDUSTRIAL APPLICABILITY The wheel guard device according to the present invention can be used for a track on which a guard rail is to be arranged along a main rail on a track having a flat upper surface.

1 Wheel guard device
2 Base plate
3 main rail fixing part
4 Guardrail fixing part
5 main rails 14 guard rails 15 outer locking portions 16 inner locking portions 17 holding portions 18 concave strips 20 concave portions 26 holding surfaces 27 convex strips 28 convex portions 30 holding members 40 fixing holes (outside fixing holes)
41 fixing hole (inner fixing hole)
42 Reinforcement part (plate material)
50 Wheel guard device 51 Base plate 60 Wheel guard device 63 Base plate 70 Wheel guard device 73 Base plate 75 Bolt hole (outside fixing hole)
76 Bolt hole (Inner fixing hole)
77 Reinforcement (plate material)
80 Wheel guard device 83 Base plate 84 Fixing hole (outside fixing hole)
85 fixing holes (inner fixing holes)
90 sleepers 91 screw nails 93 slab tracks
C train
D Deviation prevention protrusion
F load
W wheel
R orbit
S interval
O Derailment prevention position
I Retraction position

Claims (6)

A wheel guard device that is arranged on a track whose upper surface is flat to prevent derailment of the train,
A base plate fixed on the track,
The base plate is formed by continuously and integrally forming a main rail fixing portion for fixing a main rail arranged outside the track and a guard rail fixing portion for fixing a guard rail arranged inside the track,
The guard rail includes an outer locking portion for locking the wheel so as to prevent the wheel from derailing toward the inside of the main rail,
The main rail fixing portion includes a fixing member that fixes the main rail, and an outer fixing hole that fixes the main rail fixing portion to the track.
The guard rail fixing portion includes a fixing member that arranges the guard rail along the main rail, and an inner fixing hole that fixes the guard rail fixing portion side to the track,
The wheel guard, wherein the base plate is integrally provided with a reinforcing portion that extends from the main rail fixing portion to the guard rail fixing portion and protrudes upward or downward intersecting the base plate surface. apparatus.   The wheel guard device according to claim 1, wherein the reinforcing portion is formed of a plate material extending from an outer end portion of the main rail fixing portion of the base plate to an inner end portion of the guard rail fixing portion. The base plate has a fixed surface formed in the width dimension of the sleeper on the track,
3. The wheel guard device according to claim 1, wherein the reinforcing portion protrudes downward along the side surface of the sleeper.   The wheel guard device according to any one of claims 1 to 3, wherein the outer fixing hole is provided in the same positional relationship as a fixing hole already provided on the track. The guardrail fixing part is
A fixed portion formed integrally with the base plate;
A movable part that is supported by a horizontal rotation axis arranged in the fixed part and that can be rotated inward of the track around the rotation axis;
The wheel guard device according to any one of claims 1 to 4, further comprising a holding portion that holds the guard rail at a position apart from the rotation shaft of the movable portion. The guard rail includes an inner locking portion at the upper end for locking the outer locking portion and a deviation preventing projection provided at the lower part of the train to prevent the train from deviating toward the outside of the track, Formed in a T-shaped cross section having a holding part protruding downward,
The wheel guard device according to any one of claims 1 to 5, wherein the holding portion of the guard rail and the holding portion of the guard rail fixing portion are provided with uneven strips for positioning the holding portion of the guard rail in the vertical direction. .