Anti-derailment guard device for slab track and anti-derailment guard system for slab track

Abstract

To provide a derailment prevention guard device for slab track that can appropriately install a guard material along a main rail without working on the slab track.SOLUTION: The derailment prevention guard device for slab track includes a guard material placed along the main rail, a guard holding member that holds the guard material, a mounting member for mounting the guard material to the guard holding member, and a gap closing member installed between the lower surface of the guard holding member and the upper surface of the slab track to fill the gap between the lower surface of the guard holding member and the upper surface of the slab track. The guard holding member has a fixing part that is fixed to the main rail integrally formed therein.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to a derailment prevention guard device and a derailment prevention guard system that prevent the wheels of a railway vehicle from derailing from a main rail on a slab track. [Background technology]

[0002] Conventionally, guard devices to prevent wheel derailment have been installed along the main rails (in this specification and claims, "main rails" refers to rails on which railway trains run) on which railway vehicles (hereinafter simply referred to as "vehicles") run. Such guard devices are sometimes installed along the main rails of slab track.

[0003] For example, one prior art of this type is a wheel guard device that provides guard materials along the main rail of a track that uses a frame slab (see, for example, Patent Document 1). In this wheel guard device, a fixing member is fixed to the frame slab, and a guard holding member with a guard material attached is fixed to the top of the fixing member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-211010 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when installing a wheel guard device on a slab track, there are cases where, for example, it is not possible to fix the fixing members of the wheel guard device while avoiding the reinforcement of the slab track, and the wheel guard device cannot be installed appropriately along the main rail.

[0006] Furthermore, in the case of a slab track where the position of reinforcement is unclear, the wheel guard device cannot be installed appropriately along the main rail.

[0007] Therefore, the present application aims to provide a derailment prevention guard device for slab track and a derailment prevention guard system for slab track that can properly install guard materials along the main rail without processing the slab track. [Means for solving the problem]

[0008] In order to achieve the above object, the derailment prevention guard device for slab track according to the present application comprises a guard material arranged along the main line rail, a guard retaining member that holds the guard material, an attachment member that attaches the guard material to the guard retaining member, and a gap closing member that is fitted between the underside of the guard retaining member and the upper surface of the slab track to fill the gap between the underside of the guard retaining member and the upper surface of the slab track, and the guard retaining member has a fixing portion that is integrally formed with it and that is fixed to the main line rail.

[0009] With this configuration, on a slab track, the fixed portion of the guard retaining member is fixed to the main rail, and the guard material is fixed to the guard retaining member with the mounting member. Then, a gap closure member is attached to the gap between the underside of the guard retaining member and the slab track, and is brought into close contact with the underside of the guard retaining member and the upper surface of the slab track. This allows the gap between the underside of the guard retaining member and the upper surface of the slab track to be filled with the gap closure member, allowing the derailment prevention guard device for slab track to be installed. Therefore, the derailment prevention guard device can be installed without any processing on the slab track.

[0010] The gap closing member may be a variable pad, and the guard retaining member may have an uneven portion on its underside with which the variable pad comes into contact. In this specification and claims, "variable pad" refers to a pad that is variable in the thickness direction and can maintain its shape after deformation. With this configuration, the variable pad can be attached to the gap between the underside of the guard retaining member and the upper surface of the slab track, and the gap can be filled by expanding the variable pad. The variable pad engages with the uneven portion on the underside of the guard retaining member to prevent horizontal displacement.

[0011] The uneven portion may have an outer peripheral convex portion, a central convex portion, and a concave portion between the outer peripheral convex portion and the central convex portion, and the variable pad may have a core material in the area where it contacts the underside of the guard retaining member. With this configuration, when the variable pad is expanded and deformed, it is deformed so that it enters the concave portion between the outer peripheral convex portion and the central convex portion, and after deformation, the variable pad can appropriately maintain a state in which it fills the gap between the underside of the guard retaining member and the upper surface of the slab track within the area of ​​the core material.

[0012] The gap closing member may be a wedge member having a sloped portion inserted between the underside of the guard retaining member and the slab track, and the underside of the guard retaining member at the lower position of the guard material may have the same slope as the sloped portion of the wedge member in a direction intersecting the direction of extension of the guard material, and may be equipped with a locking mechanism to prevent the wedge member from falling off. With this configuration, the wedge member can be inserted into the gap between the underside of the guard retaining member and the upper surface of the slab track, and the wedge member can properly fill the gap. The wedge member is locked to the guard retaining member by the locking mechanism, preventing it from falling off.

[0013] The guard retaining member may further include a fixing bolt that fixes the mounting member to the guard retaining member, and a rotation prevention member that keeps the fixing bolt fixed and prevents it from rotating. With this configuration, the rotation prevention member can prevent the fixing bolt of the mounting member that fixes the guard material to the guard retaining member from loosening due to vibrations of a vehicle running on the main rail, etc.

[0014] The guard material may also have an outer abutment portion that prevents the wheels from derailing inwardly of the main rail, an inner abutment portion that prevents the derailed train from departing outwardly from the track, and a web portion that is fixed to the guard retaining member. With this configuration, the guard material can prevent derailment by causing the wheels that are about to derail to abut against the outer abutment portion, and even if the wheels derail, the train can be stopped by the inner abutment portion, preventing the train from departing significantly outwardly from the track.

[0015] Furthermore, the web portion of the guard material and the holding portion of the guard holding member that holds the guard material may have an engaging portion that engages with the guard material in the longitudinal direction. With this configuration, the holding portion and the web portion of the guard holding member are engaged with each other at the engaging portion, so that the guard material can be properly held by the guard holding member.

[0016] On the other hand, the derailment prevention guard system for slab track according to the present application comprises a plurality of derailment prevention guard devices for slab track arranged in the direction of extension of the main track rail, and further comprises a device for preventing the guard material from falling off at a position inward of the derailment prevention guard device for slab track provided at the end of the slab track, and the device for preventing the guard material from falling off has a fixing base fixed to the main track rail, and a guard material support block having an uneven portion that engages with an uneven portion formed on the web portion of the guard material. In this specification and claims, "inner position" refers to a position from the end of the slab track toward the center of the slab track.

[0017] With this configuration, in addition to the multiple slab track derailment prevention guard devices provided in the direction of the main track rail, the anti-detachment device is provided at a position inward of the slab track derailment prevention guard device provided at the end of the slab track, so even if a guard material tries to come off the slab track derailment prevention guard device, the guard material and the guard material support block of the anti-detachment device will remain engaged, thereby preventing the guard material provided along the main track rail from shifting out of position.

[0018] The guard material support block and the fixed base may be configured to be detachable, and the guard material support block may have an insertion portion through which the web portion of the guard material is inserted in the track direction, and the insertion portion may be provided with the uneven portion. With this configuration, the guard material support block can be configured to insert the web portion of the guard material into the insertion portion of the guard material support block and then fixed to the fixed base, thereby making it possible to efficiently install the falling-off prevention device. [Effects of the Invention]

[0019] According to the present application, it is possible to provide a derailment prevention guard device for a slab track that can appropriately install guard materials along the main rail without processing the slab track. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a front view showing a first derailment prevention guard device for a slab track according to a first embodiment of the present application. [Figure 2] FIG. 2 is a plan view of the first derailment prevention guard device for a slab track shown in FIG. [Figure 3] 3 is a perspective view showing the first derailment prevention guard device for a slab track shown in FIG. 1 from below. [Figure 4] 4A and 4B are diagrams showing the variable pad of the first derailment prevention guard device for a slab track shown in FIG. 1, where (a) is a plan view and (b) is a side view. [Figure 5] 5 is a perspective view showing a mounting member of the first derailment prevention guard device for a slab track shown in FIG. 1. FIG. [Figure 6] 6A and 6B are diagrams showing the rotation prevention member of the first derailment prevention guard device for a slab track shown in FIG. 1, where (a) is a front view and (b) is a side view. [Figure 7] FIG. 7 is a front view showing a fall-off prevention device according to an embodiment of the present application. [Figure 8] FIG. 8 is a plan view of the fall-off prevention device shown in FIG. [Figure 9] FIG. 9 is a front view showing a second derailment prevention guard device for a slab track according to a second embodiment of the present application. [Figure 10] FIG. 10 is a front view showing a state in which the second derailment prevention guard device for a slab track shown in FIG. 9 is fixed by a wedge member. [Figure 11] 11A and 11B are drawings of the wedge member shown in FIG. 9, where (a) is a perspective view and (b) is a cross-sectional view taken along line XI-XI. [Figure 12]FIG. 12 is a plan view of a derailment prevention guard system for a slab track that includes the first derailment prevention guard device for a slab track shown in FIG. 2 and the falling-off prevention device shown in FIG. [Figure 13] FIG. 13 is a front view of the first slab track derailment prevention guard device shown in FIG. 1 when preventing derailment. [Figure 14] FIG. 14 is a front view of the first derailment prevention guard device for a slab track shown in FIG. 1 when deviation is prevented. DETAILED DESCRIPTION OF THE INVENTION

[0021] An embodiment of the present application will be described below with reference to the drawings. In the following embodiment, a first slab track anti-derailment guard device 20 and a second slab track anti-derailment guard device 80 will be described, in which guard materials 10 are arranged along a main track rail 200 provided in the track direction L of a slab track 1 (frame-type slab), and a slab track anti-derailment guard system 100 equipped with the first slab track anti-derailment guard device 20 will be described. The first slab track anti-derailment guard device 20 and the second slab track anti-derailment guard device 80 are examples. Note that, in the concept of direction in this specification and claims, the direction in which the main track rail 200 extends is referred to as the track direction L, and the direction perpendicular to the track direction L is referred to as the track width direction M, as shown in FIG. 12 .

[0022] (First slab track derailment prevention guard device) Fig. 1 is a front view showing a first slab track derailment prevention guard device 20 according to one embodiment. Fig. 2 is a plan view of the first slab track derailment prevention guard device 20 shown in Fig. 1. Fig. 3 is a perspective view showing the first slab track derailment prevention guard device 20 shown in Fig. 1 from below. Fig. 3 shows the first slab track derailment prevention guard device 20 excluding the variable pad 40.

[0023] 1 and 2, the first slab track derailment prevention guard device 20 of the first embodiment is equipped with a guard material 10 arranged along the main rail 200, a guard retaining member 21 that secures the guard material 10, and an attachment member 35 that attaches the guard material 10 to the guard retaining member 21. In addition, a variable pad 40 is provided between the underside 22 of the guard retaining member 21 and the slab track 1 as a gap closing member that fills the gap G between the upper surface 2 of the slab track 1 and the guard retaining member 21.

[0024] The guard retaining member 21 is integrally formed with a fixing portion 24 that is fixed to the bottom portion 201 of the main rail 200. The fixing portion 24 has a locking portion 25 that is locked to one widthwise end portion of the bottom portion 201 of the main rail 200, and a fixing member 26 that clamps the other widthwise end portion of the bottom portion 201 of the main rail 200. With the locking portion 25 locked to one widthwise end portion of the bottom portion 201 of the main rail 200, the guard retaining member 21 is fixed to the other widthwise end portion of the bottom portion 201 of the main rail 200 by the fixing member 26. The fixing member 26 is fixed to the guard retaining member 21 by a fixing bolt 27. The fixing bolt 27 in this embodiment is a T-bolt that can be attached and fixed from above.

[0025] The guard holding member 21 is provided with a holding portion 28 that holds the guard material 10 at a position diagonally above the locking portion 25. The holding portion 28 has arm portions 29 that form U-shaped openings at both ends in the track direction L, so that the web portion 11 of the guard material 10 can be inserted and held from above. An attachment member 35 is attached between the arm portions 29.

[0026] The portion of the retaining portion 28 that retains the guard material 10 is provided with an engaging protrusion 30 (engagement portion) in the track direction L that fits into an engaging recess 15 (engagement portion) provided in the longitudinal direction of the web portion 11 of the guard material 10. In this embodiment, the engaging recess 15 is provided in the web portion 11 of the guard material 10, and the engaging protrusion 30 is provided in the retaining portion 28 of the guard retaining member 21, but these may be arranged in the opposite direction.

[0027] The guard material 10 has a generally T-shaped cross section, and includes a web portion 11 that is fixed to the retaining portion 28 of the guard retaining member 21, and a flange portion 12 that is provided at the upper end of the web portion 11 and extends horizontally. One horizontal end of the flange portion 12 is an outer abutment portion 13, and the other end is an inner abutment portion 14. The guard material 10 is fixed in place while held by the retaining portion 28 of the guard retaining member 21 by fixing an attachment member 35 to the guard retaining member 21 with a fixing bolt 36. The fixing bolt 36 is fixed by screwing it into a nut 36c that is held in place. The guard material 10 fixed to the guard retaining member 21 is in a state where the engagement recess 15 engages with the engagement protrusion 30 of the guard retaining member 21.

[0028] The guard material 10 of the guard retaining member 21 fixed to the main line rail 200 has the upper end position of the outer abutment portion 13 positioned at a predetermined distance A from the side of the head 202 of the main line rail 200 and at a height B above the top surface of the head 202.

[0029] In this embodiment, an insulating material 38 is provided between the guard material 10 and the guard holding member 21 and mounting member 35. The insulating material 38 may be a glass fiber cloth or the like. Providing the insulating material 38 prevents the main line rail 200 and the guard material 10 from becoming electrically conductive. Note that if there is no concern about electrical conductivity, there is no need to provide the insulating material 38.

[0030] Furthermore, a rotation-preventing member 50 that keeps the fixing bolt 36 fixed and prevents it from rotating is provided at the position of the head 36a of the fixing bolt 36 that fixes the mounting member 35 to the guard holding member 21. The rotation-preventing member 50 will be described in detail below. After the rotation-preventing member 50 is provided at the position of the head 36a of the fixing bolt 36, a retaining pin 37 is inserted into the pin hole 36b of the head 36a. The retaining pin 37 prevents the rotation-preventing member 50 from moving in a direction that disengages it from the head 36a of the fixing bolt 36.

[0031] The first slab track derailment prevention guard device 20 may be configured without the anti-rotation member 50, but providing the anti-rotation member 50 makes it possible to extend the inspection interval of the fixing bolts 36, for example.

[0032] Additionally, variable pads 40 are provided between the undersides of the guard retaining members 21 and the upper surface of the slab track 1 to fill the gap G between the upper surface 2 of the slab track 1 and the underside 22 of the guard retaining members 21. The height of the gap G at each guard retaining member 21 varies slightly depending on the construction state of the slab track 1, but this difference can be absorbed by the amount of expansion of the variable pads 40. Figures 1 and 2 show the first slab track derailment prevention guard device 20 fixed in place, with the variable pads 40 filling the gap G. The core material 44 of the variable pad 40 is larger than the underside of the guard retaining member 21. The variable pads 40 transmit the force acting on the guard retaining members 21 to the slab track 1, allowing it to be received by the slab track 1. Therefore, with the first slab track derailment prevention guard device 20, when a load acts on the guard material 10 fixed to the guard retaining member 21, the load can be appropriately received by the slab track 1 from the guard retaining member 21 via the variable pads 40. The variable pad 40 will be described in detail later.

[0033] 3, the guard holding member 21 has an uneven portion 23 on its lower surface 22. The uneven portion 23 has a peripheral outer circumferential protrusion 23a, a cross-shaped central protrusion 23b in the center, and an intermediate recess 23c therebetween. When the variable pad 40 is expanded due to this uneven portion 23, as will be described later, the variable pad 40 is deformed so as to enter the intermediate recess 23c on the lower surface 22 of the guard holding member 21, and after hardening, the variable pad 40 remains inserted between the peripheral protrusion 23a and the central protrusion 23b.

[0034] (Variable Pad) 4A and 4B are drawings showing the variable pad 40 of the first slab track derailment prevention guard device 20 shown in FIG. 1, with (a) being a plan view and (b) being a side view. In this embodiment, the variable pad 40 has a main body 41 formed in a rectangular shape in a plan view. The main body 41 has a rectangular shape that is larger than the underside 22 (FIG. 4) of the guard retaining member 21. The main body 41 is formed in a deformable bag shape, and is provided with an injection port 42 for injecting a resin material into the inside and an exhaust port 43 for discharging the air inside at diagonal positions.

[0035] The main body 41 has a core material 44 therein that is large enough to contact the underside of the guard holding member 21. The main body 41 is filled with resin material by injecting resin material into the interior through an injection port 42, and then exhausting the air from the interior through an exhaust port 43. A hardening resin material is used as the resin material.

[0036] With such a variable pad 40, when the inside of the main body 41 is filled with resin material, the variable pad 40 swells to enter the intermediate recess 23c on the underside 22 of the guard holding member 21 and deforms to a state in which it engages with the outer circumferential protrusion 23a and the central protrusion 23b, and as the internal resin material hardens, the state in which it engages with the uneven portion 23 is maintained (the state in FIG. 1). In other words, the variable pad 40 deforms to fit the shape of the underside of the guard holding member 21 with which its upper surface is in contact, and as the resin material filled inside hardens, it can maintain its shape. Note that the injection port 42 and the exhaust port 43 of the variable pad 40 may be removed after the internal resin material has hardened.

[0037] (Mounting parts) 5 is a perspective view showing the mounting member 35 of the first slab track derailment prevention guard device 20 shown in FIG. 1. The mounting member 35 in this embodiment is formed in a rectangular shape, and its width is dimensioned to fit between the arm portions 29 provided on the holding portion 28 of the guard holding member 21. The mounting member 35 has a back surface 35a that contacts the lower portion of the holding portion 28 of the guard holding member 21 and the web portion 11 of the guard material 10, and a front surface 35b against which the head 36a of the fixing bolt 36 (FIG. 1) abuts. A bolt hole 35c for the fixing bolt 36 is formed from the front surface 35b toward the back surface 35a. In addition, a concave step 35d that engages the locking portion 53 of the anti-rotation member 50 is formed in the lower part of the front surface 35b.

[0038] (anti-rotation member) Figure 6 is a drawing showing the anti-rotation member 50 of the first slab track derailment prevention guard device 20 shown in Figure 1, where (a) is a front view and (b) is a side view. The anti-rotation member 50 of this embodiment has an anti-rotation part 51 having an insertion part 52 into which the head part 36a of the fixing bolt 36 is inserted, and an engaging part 53 that engages with the step part 35d at the bottom of the mounting member 35.

[0039] The anti-rotation portion 51 has a predetermined thickness H, and is provided in its central portion with an insertion portion 52 into which the head 36a of the fixing bolt 36 (FIG. 1) is inserted. The insertion portion 52 is provided with a plurality of engagement protrusions 52a around its periphery that engage with the head 36a of the fixing bolt 36. In this embodiment, twelve engagement protrusions 52a are provided so as to engage with the corners of the hexagonal head 36a. The thickness H of the anti-rotation portion 51 is set to a thickness that allows the pin hole 36b provided in the head 36a of the fixing bolt 36 to protrude to the outside.

[0040] The anti-rotation member 50 has a locking portion 53 that protrudes toward the mounting member 35 below the anti-rotation portion 51. The locking portion 53 consists of two protruding portions provided at both ends in the width direction. The portion of the locking portion 53 that locks onto the step portion 35d of the mounting member 35 is inclined outward, so that it can also be locked in an inclined state depending on the position of the corner of the head portion 36a (Fig. 3). The locking portion 53 locks onto the step portion 35d of the mounting member 35 at two points, thereby preventing the anti-rotation member 50 from rotating in either the clockwise or counterclockwise direction.

[0041] (Falling prevention device) Fig. 7 is a front view showing an anti-fall-off device 60 according to one embodiment. Fig. 8 is a plan view of the anti-fall-off device 60 shown in Fig. 7. As shown in Figs. 7 and 8, the anti-fall-off device 60 of this embodiment includes a fixed base 61 fixed to the bottom 201 of the main rail 200, and a guard material support block 62 fixed to the fixed base 61 with the web portion 11 of the guard material 10 inserted therethrough.

[0042] The fixed base 61 has a fixing portion 63 that is fixed to the bottom 201 of the main rail 200. The fixing portion 63 has a locking portion 64 that is locked to one widthwise end of the bottom 201 of the main rail 200, and a fixing member 65 that clamps the other widthwise end of the bottom 201 of the main rail 200. With the locking portion 64 locked to one widthwise end of the bottom 201 of the main rail 200, the fixed base 61 is fixed to the other widthwise end of the bottom 201 of the main rail 200 by the fixing member 65. The fixing member 65 is fixed to the fixed base 61 by a fixing bolt 66. In this embodiment, the fixing bolt 66 is a T-bolt that can be fixed from above. The fixed base 61 has an attachment portion 67 for the guard material support block 62 in the direction of the locking portion 64. The attachment portion 67 has a slightly recessed recess 67a.

[0043] The guard material support block 62 has an engaging member 69 provided with an insertion portion 68 through which the web portion 11 of the guard material 10 is inserted, and a base plate 70 fixed to the lower end of the engaging member 69 and attached to the mounting portion 67 of the fixed base 61. The engaging member 69 and base plate 70 are integrally formed. The insertion portion 68 has an engaging protrusion 71 (engagement portion) that engages with the engaging recess 15 (engagement portion) of the guard material 10. The insertion portion 68 is designed so that the engaging recess 15 and the engaging protrusion 71 engage when the guard material 10 is inserted in the track direction L. With the guard material 10 inserted into the insertion portion 68, the base plate 70 of the guard material support block 62 is fixed to the mounting portion 67 with a fixing bolt 72. In this embodiment, the fixing bolt 72 is a T-bolt that can be fixed from above. The base plate 70 of the guard material support block 62 is fixed in a recess 67a provided in the mounting portion 67 of the fixed base 61. This allows the guard material support block 62 to be fixed in a predetermined position on the fixed base 61.

[0044] The installation of the fall prevention device 60 is completed when the fixed base 61 is fixed to the bottom 201 of the main line rail 200 by the locking portion 64 and the fixing member 65. The fall prevention device 60 attached to the main line rail 200 is floating above the upper surface 2 of the slab track 1, and installation is completed when there is a gap G. Because the fixed base 61 of the fall prevention device 60 is fixed to the main line rail 200, the engagement recess 15 of the guard material 10 engages with the engagement protrusion 71 of the guard material support block 62, preventing upward movement from the insertion portion 68. Therefore, the fall prevention device 60 can prevent the guard material 10 from shifting out of position.

[0045] (Second slab track derailment prevention guard device) FIG. 9 is a front view showing a second slab track derailment prevention guard device 80 according to a second embodiment. FIG. 10 is a front view showing the second slab track derailment prevention guard device 80 shown in FIG. 9 in a fixed state. FIG. 11 is a drawing of the wedge member 90 shown in FIG. 9, where (a) is a perspective view and (b) is a cross-sectional view taken along line XI-XI. The second slab track derailment prevention guard device 80 has almost the same configuration as the first slab track derailment prevention guard device 20 described above, differing only in that it includes a wedge member 90 instead of the variable pad 40. Therefore, the description of the second slab track derailment prevention guard device 80 will focus on only the parts that differ from the first slab track derailment prevention guard device 20, and the same components as those in the first slab track derailment prevention guard device 20 will be assigned the same reference numerals and will not be described again.

[0046] As shown in FIG. 9 , the second slab track derailment prevention guard device 80 is equipped with a wedge member 90 as a gap closing member that fills the gap G between the underside 82 of the guard retaining member 81 and the upper surface 2 of the slab track 1. The underside 82 of the guard retaining member 81, below the retaining portion 28 that retains the guard material 10, is formed at a predetermined gradient S in the track width direction M (left-to-right direction on the page). As shown in the figure, the portion of the underside 82 where the gradient S is formed is formed in a predetermined range T so as to widen upward from below the portion of the guard retaining member 81 where the guard material 10 is retained toward the outer end. The predetermined range T is a range that includes below the retaining portion 28 of the guard retaining member 81 that retains the web portion 11 of the guard material 10, and is a range that can receive a force acting on the guard material 10. In this embodiment, the gradient S is formed in the predetermined range T of the underside 82 below the guard material 10.

[0047] As shown in Figure 10, in the second slab track derailment prevention guard device 80, a wedge member 90 having a sloped portion 91 with the same slope S is inserted and driven into the portion of the underside 82 of the guard holding member 81, which has the slope S. As a result, the wedge member 90 fills the gap G between the portion of the underside 82 of the guard holding member 81 with the slope S and the upper surface 2 of the slab track 1.

[0048] As shown in FIG. 11(a), the wedge member 90 of this embodiment has a sloped portion 91 with a predetermined gradient in the center, and rising portions 92 that rise upward at both ends of the sloped portion 91. The sloped portion 91 is wider than the dimension of the guard retaining member 81 in the track direction L. When the sloped portion 91 of the wedge member 90 is inserted into the lower surface 82 of the guard retaining member 81, the rising portions 92 are positioned on both outer sides of the guard retaining member 81. The rising portions 92 are provided with elongated locking holes 93 that extend in the track width direction M. The slope S of the sloped portion 91 shown in FIG. 11(b) is set to, for example, about 1 / 15 to 1 / 25.

[0049] As shown in Figure 10, in the second slab track derailment prevention guard device 80, the wedge member 90 is inserted between the underside 82 of the guard retaining member 81 and the top surface 2 of the slab track 1, and is driven from the outside toward the inside in the track width direction M. This causes the wedge member 90 to fill the gap G. The height dimension of the gap G at the position of each guard retaining member 81 varies slightly depending on the construction state of the slab track 1, but this difference can be absorbed by the amount of driving the wedge member 90 into it. After the wedge member 90 is driven into the gap G between the guard retaining member 81 and the slab track 1, a pin 94 is driven from the elongated locking hole 93 toward the elongated locking hole 93 of the guard retaining member 81. The pin 94 is provided in a state where it protrudes from the locking hole 83 of the guard retaining member 81 toward the elongated locking hole 93. Even if the wedge member 90 attempts to come out of the gap G between the guard holding member 81 and the slab track 1, the pin 94 engages the locking slot 93 to prevent it from falling out. This is the locking mechanism. Note that the locking mechanism may be a mechanism other than the pin 94 that prevents the wedge member 90 from falling out, such as a wire, a bolt and a nut.

[0050] With the second slab track derailment prevention guard device 80 configured in this manner, below the guard material 10 fixed to the guard retaining member 81, the gap G between the underside 82 of the guard retaining member 81 and the upper surface 2 of the slab track 1 is filled with the wedge member 90. This allows the force acting on the guard material 10 to be received by the slab track 1 from the underside 82 of the guard retaining member 81 via the wedge member 90. Therefore, with the second slab track derailment prevention guard device 80, when a load acts on the guard material 10 fixed to the guard retaining member 81, the load can be appropriately received by the slab track 1 from the guard retaining member 81 via the wedge member 90.

[0051] (Anti-derailment guard system for slab track) Fig. 12 is a plan view of a derailment prevention guard system 100 for slab track, equipped with the first slab track derailment prevention guard device 20 shown in Fig. 2 and the fall prevention device 60 shown in Fig. 8. This figure shows an example of a joint portion of a frame slab as the slab track 1. The slab track derailment prevention guard system 100 of this embodiment further comprises a fall prevention device 60 for the guard material 10 in addition to the first slab track derailment prevention guard device 20. The main line rail 200 shown in the figure is fixed to the slab track 1 by rail fixing parts 210.

[0052] In the slab track derailment prevention guard system 100 according to this embodiment, a first slab track derailment prevention guard device 20 is provided so that guard materials 10 are arranged along a main rail 200 provided on the slab track 1. The first slab track derailment prevention guard device 20 is provided at a predetermined distance from the gap 3 at the joint of the slab track 1. In this example, one slab track 1 (to the right in the figure) is provided with a falling-off prevention device 60 at a position two positions inward from the gap 3, and the other slab track 1 (to the left in the figure) is provided with a falling-off prevention device 60 at a position three positions inward from the gap 3. The falling-off prevention device 60 does not have to be located closest to the gap 3 in the slab track 1, and may be located elsewhere.

[0053] According to the first slab track derailment prevention guard device 20 of this slab track derailment prevention guard system 100, even when the guard material 10 is arranged along the main line rail 200 of the slab track 1, it is possible to arrange the guard material 10 along the main line rail 200 without processing the slab track 1.

[0054] Furthermore, according to the slab track derailment prevention guard system 100 of this embodiment, the first slab track derailment prevention guard device 20 is equipped with an anti-rotation member 50 (Figure 1), which can prevent the fixing bolts 36 from loosening due to vibrations transmitted from the wheels W of the train V running on the main track rail 200.

[0055] Furthermore, even if the fixing bolt 36 loosens, the guard material 10 is prevented from shifting position because the engaging recess 15 of the web portion 11, which is inserted into the insertion portion 68 provided on the guard material support block 62 of the anti-fall-off device 60, remains engaged with the engaging protrusion 71.

[0056] 12 has been described using an example of a slab track derailment prevention guard system 100 equipped with a first slab track derailment prevention guard device 20 and a fall prevention device 60, but the slab track derailment prevention guard system 100 may also be configured to combine a second slab track derailment prevention guard device 80 and a fall prevention device 60. The slab track derailment prevention guard system 100 may also be configured to combine a first slab track derailment prevention guard device 20 and a second slab track derailment prevention guard device 80, or to combine these with the fall prevention device 60. Either the first slab track derailment prevention guard device 20 or the second slab track derailment prevention guard device 80 can be used depending on the slab track 1.

[0057] (Function of derailment prevention guard device) Figure 13 is a front view of the first slab track derailment prevention guard device 20 shown in Figure 1 when preventing derailment. Figure 14 is a front view of the first slab track derailment prevention guard device 20 shown in Figure 1 when preventing deviation. Based on these figures, derailment prevention and deviation prevention of a train V by the first slab track derailment prevention guard device 20 will be explained. Note that deviation prevention protrusions D are provided on the underside of the train V at predetermined intervals in the longitudinal direction (for example, at the front and rear positions of one car of the train V) to come into contact with the inner abutment portions 14 of the guard material 10 when the wheels W derail, thereby preventing the train V from deviating significantly from the track.

[0058] As shown in Figure 13, when a large load F (in this example, a lateral force from the right side of the figure) acts on a train V traveling on the main rail 200, one wheel (on the left side of the figure) climbs onto the upper surface of the main rail 200, and the other wheel W (on the right side of the figure) is guarded with its inside surface in contact with the outer abutment portion 13 of the guard material 10. In this state, the wheel W on the right side of the figure is traveling on the main rail 200, so derailment of the wheel W can be prevented.

[0059] 14, if the load F increases further and the wheels W derail beyond the guard material 10, the train V will try to jump out of the track (to the left in the figure) due to the load F, but the deviation prevention protrusion D provided on the bottom of the train V will come into contact with the inner abutment portion 14 of the guard material 10, preventing further deviation. As a result, even if the train V derails from the main line rail 200, the train V can be stopped without coming into contact with an oncoming train. Therefore, even if the train V derails from the main line rail 200 during an earthquake, for example, it can be prevented from deviating significantly from the slab track 1.

[0060] In the above embodiment, a configuration is described in which the first slab track derailment prevention guard device 20 and the fall prevention device 60 are provided, but the configuration may also be such that the fall prevention device 60 is not provided and only the first slab track derailment prevention guard device 20 is provided, and the present application is not limited to the above embodiment.

[0061] Furthermore, the same applies whether a portion of the first slab track anti-derailment guard device 20 is replaced by the second slab track anti-derailment guard device 80 or whether the entire device is replaced by the second slab track anti-derailment guard device 80, and the present application is not limited to the above embodiment.

[0062] Furthermore, although an example in which the anti-rotation member 50 is provided has been described, other measures to prevent the fixing bolt 36 from loosening may also be provided, and the present application is not limited to the above-described embodiment.

[0063] Furthermore, the above-described embodiment shows one example, and various modifications are possible within the scope that does not depart from the gist of the present application, and the present application is not limited to the above-described embodiment. [Explanation of symbols]

[0064] 1. Slab track (frame slab) 2 Top surface 3. Gap 10 Guard material 11 Web Department 12 Flange 13 Outer contact part 14 Inner contact part 15 Engagement recess (engagement portion) 20. First slab track derailment prevention guard device 21 Guard retaining member 22 Bottom side 23 Uneven part 24 Fixed part 25 Locking part 26 Fixing member 27 Fixing bolt 28 Holding part 29 Arm section 30 Engagement protrusion (engagement portion) 35 Mounting material 35d stepped section 36 Fixing bolt 36a head 36b pin hole 37 Retaining pin 38 Insulation 40 Variable pad (gap closing member) 44 Core material 50 Anti-rotation member 51 Anti-rotation part 52 Insertion section 52a Engaging protrusion 53 Locking part 60 Fall prevention device 61 Fixed base 62 Guard material support block 63 Fixed part 64 Locking part 65 Fixing member 66 Fixing bolt 68 Insertion part 69 Engagement member 70 Base Plate 71 Engagement protrusion (engagement portion) 72 Fixing bolt 80 Second slab track derailment prevention guard device 81 Guard retaining member 82 Bottom surface (slope surface) 83 Engagement hole (locking mechanism) 90 Wedge member (gap closing member) 91 Gradient section 92 Rising section 93 Engagement slot (locking mechanism) 94 Pin (locking mechanism) 100 Anti-derailment guard system for slab track 200 main rail tracks 201 Bottom 202 Head

Claims

1. Guard materials to be installed along the main rail; a guard holding member that holds the guard material; an attachment member for attaching the guard material to the guard holding member; a gap closing member that is attached between the lower surface of the guard retaining member and the upper surface of the slab track to close the gap between the lower surface of the guard retaining member and the upper surface of the slab track, The guard holding member is integrally formed with a fixing portion for fixing to the main rail, the gap closure member is a variable pad that is deformable in a thickness direction, the guard holding member has a concave-convex portion on a lower surface with which the variable pad comes into contact, the concave-convex portion has a central convex portion and an outer peripheral convex portion that includes the central convex portion in a bottom view, The derailment prevention guard device for a slab track, wherein the variable pad has a core material in an area where it contacts the lower surface of the guard retaining member.

2. A guard material disposed along the main rail; a guard holding member that holds the guard material; an attachment member for attaching the guard material to the guard holding member; a gap closing member that is attached between the lower surface of the guard retaining member and the upper surface of the slab track to close the gap between the lower surface of the guard retaining member and the upper surface of the slab track, The guard holding member is integrally formed with a fixing portion for fixing to the main rail, the gap closure member is a wedge member, the wedge member has a sloped portion inserted between the lower surface of the guard retaining member and the slab track, a guard retaining member having a lower surface at a lower position of the guard material that has the same slope as the sloped portion of the wedge member in a direction intersecting the extending direction of the guard material, and having a locking mechanism that prevents the wedge member from falling off.

3. 3. The derailment prevention guard device for a slab track according to claim 1 or 2, further comprising: a fixing bolt that fixes the mounting member to the guard holding member; and a rotation prevention member that keeps the fixing bolt in a fixed state and prevents it from rotating.

4. 4. The derailment prevention guard device for a slab track according to claim 1, wherein the guard material has an outer abutment portion that prevents wheels from derailing inwardly of the main line rail, an inner abutment portion that prevents a derailed train from departing outwardly from the track, and a web portion that is fixed to the guard retaining member.

5. 5. The derailment prevention guard device for a slab track according to claim 4, further comprising an engaging portion that engages with the web portion of the guard material and a holding portion of the guard holding member that holds the guard material in the longitudinal direction of the guard material.

6. A plurality of derailment prevention guard devices for a slab track according to claim 5 are provided in the direction in which the main line rail extends, The slab track further includes a guard material drop prevention device located inside the slab track derailment prevention guard device provided at the end of the slab track, The anti-fall-off device includes a fixed base that is fixed to the main line rail, and a guard material support block that has a concave-convex portion that engages with a concave-convex portion formed on the web portion of the guard material.

7. A derailment prevention guard system for a slab track comprising a plurality of derailment prevention guard devices for a slab track in the direction in which the main line rail extends, The derailment prevention guard device for a slab track is a guard material disposed along the main rail; a guard holding member that holds the guard material; an attachment member for attaching the guard material to the guard holding member; a gap closing member that is attached between the lower surface of the guard retaining member and the upper surface of the slab track to close the gap between the lower surface of the guard retaining member and the upper surface of the slab track, The guard holding member is integrally formed with a fixing portion for fixing to the main rail, the guard material has an outer abutment portion that prevents the wheels from derailing toward the inside of the main rail, an inner abutment portion that prevents the derailed train from departing toward the outside of the track, and a web portion that is fixed to the guard holding member, The guard holding member has an engaging portion that engages with the web portion of the guard material and a holding portion of the guard holding member that holds the guard material in the longitudinal direction of the guard material, The slab track further includes a guard material drop prevention device located inside the slab track derailment prevention guard device provided at the end of the slab track, the fall prevention device includes a fixed base fixed to the main rail, and a guard material support block having a concave-convex portion that engages with a concave-convex portion formed on the web portion of the guard material, The guard material support block and the fixed base are configured to be detachable, a guard material support block having an insertion portion through which the web portion of the guard material is inserted in the track direction, the insertion portion being provided with the uneven portion;

Images