Railway components

Abstract

The present invention provides a railway component that exhibits excellent slip resistance even when the frozen layer on the walking surface becomes thick when walking near railway tracks. [Solution] A railway member having a landing area for walking near railway rails, wherein the landing area is equipped with an anti-slip layer including a plurality of resin protrusions.

Description

Technical Field

[0001] The present invention relates to railway members.

Background Art

[0002] When maintaining the track, the maintenance worker walks on the sleeper (generally also referred to as "sleeper log" or "railway sleeper") and the walkway board to move near the rail. However, when the walking surface is frozen or soiled with rainwater, it becomes slippery. Patent Document 1 describes a method of forming an anti-slip layer by adhering granular materials to the walking surface of a sleeper with a synthetic resin adhesive. Patent Document 2 describes a water-based floor paint for coating the floor surface, which contains a resin, a solvent, and a particulate anti-slip agent.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the method of making the surface uneven with granular materials as in Patent Documents 1 and 2, there is a limit to the size of the grains that can be used, and the height of the unevenness is at most about 3 mm. Therefore, the anti-slip effect may not be sufficient. For example, there was a problem that when the frozen layer on the surface of the sleeper became thick and exceeded the height of the unevenness, it became slippery. An object of the present invention is to provide a railway member that exhibits a good anti-slip effect even when the frozen layer on the walking surface becomes thick.

Means for Solving the Problems

[0005] The present invention has the following aspects. <1> A railway component having a landing area for walking near railway rails, wherein the landing area is equipped with an anti-slip layer including a plurality of resin protrusions. <2> The railway component is a walkway placed between a pair of rails, a sleeper placed under both of the pair of rails, or a sleeper placed under each of the pair of rails. <1> Railway components as described above. <3> The resin protrusion is a ridge or a point-like projection. <1> or <2> Railway components as described above. <4> The resin protrusion is a ridge, and the angle θ between the length direction of the ridge and the length direction of the rail is 45° or more and 90° or less. <3> Railway components as described above. <5> The resin protrusion is a ridge, and there is a strip-shaped region that intersects the length direction of the ridge, where the ridge is absent, and there is a break region. <3> or <4> Railway components as described above. <6> The resin protrusion contains granular material having a diameter smaller than the height of the resin protrusion. <1> ~ <5> Railway components as described in any one of the items. [Effects of the Invention]

[0006] According to the present invention, a railway component is obtained that exhibits a good anti-slip effect even when the frozen layer on the walking surface becomes thick. [Brief explanation of the drawing]

[0007] [Figure 1] This is a plan view showing one embodiment of a longitudinal sleeper, which is a railway component according to the present invention. [Figure 2] This is a cross-sectional view along line AA in Figure 1. [Figure 3] This is a cross-sectional view along line BB in Figure 1. [Figure 4] This is a plan view showing another embodiment of a longitudinal sleeper, which is a railway component according to the present invention. [Figure 5] This is a plan view showing another embodiment of a longitudinal sleeper, which is a railway component according to the present invention. [Figure 6] This is a cross-sectional view along line AA in Figure 5. [Figure 7] It is a cross-sectional view taken along line B-B of FIG. 5. [Figure 8] It is a plan view showing one embodiment of a lateral bolster, which is a railway member according to the present invention. [Figure 9] It is a cross-sectional view taken along line A-A of FIG. 8. [Figure 10] It is a cross-sectional view taken along line B-B of FIG. 8. [Figure 11] It is a plan view showing another embodiment of a lateral bolster, which is a railway member according to the present invention. [Figure 12] It is a plan view showing another embodiment of a lateral bolster, which is a railway member according to the present invention. [Figure 13] It is a cross-sectional view taken along line A-A of FIG. 12. [Figure 14] It is a cross-sectional view taken along line B-B of FIG. 12. [Figure 15] It is a plan view showing one embodiment of a walkway board, which is a railway member according to the present invention. [Figure 16] It is a cross-sectional view taken along line A-A of FIG. 15. [Figure 17] It is a cross-sectional view taken along line B-B of FIG. 15. [Figure 18] It is a plan view showing another embodiment of a walkway board, which is a railway member according to the present invention. [Figure 19] It is a plan view showing another embodiment of a walkway board, which is a railway member according to the present invention. [Figure 20] It is a cross-sectional view taken along line A-A of FIG. 19. [Figure 21] It is a cross-sectional view taken along line B-B of FIG. 19. [Figure 22] It is a cross-sectional view showing a modification example of a resin convex portion according to the present invention. [Figure 23] It is a cross-sectional view showing another modification example of a resin convex portion according to the present invention.

Embodiments for Carrying out the Invention

[0008] Hereinafter, referring to the drawings, a railway member according to an embodiment of the present invention will be described. Please note that the following diagram is a schematic representation intended to clearly explain the structure, and the dimensional ratios of each component may differ from the actual dimensions.

[0009] The railway component of the present invention is a component having a landing area for walking near railway rails (hereinafter simply referred to as "rails"), and is a component that can be used to form a walkway. The vicinity of railway tracks typically refers to areas where maintenance personnel and others are permitted to enter for track maintenance purposes. The railway component of the present invention is a component that is positioned in the vicinity of a railway rail, and is typically a component that extends continuously or is arranged intermittently along the length of the rail. Specific examples of railway components include walkways placed between a pair of rails, sleepers (such as horizontal sleepers) placed under both rails of a pair, or sleepers (such as vertical sleepers) placed under each of the rails of a pair. Figures 1-7 show examples of longitudinal sleepers, Figures 8-14 show examples of transverse sleepers, and Figures 15-22 show examples of walkway boards. In the figures, 1 indicates a rail and 2 indicates a tie plate. In the figures, the length direction of the rail is the X direction, the direction perpendicular to the rail's mounting surface is the Z direction, and the direction perpendicular to both the X and Z directions is the Y direction.

[0010] Materials used for railway components include fiber-reinforced resins containing reinforcing fibers and resins, wood, and thermoplastic resins. As the fiber-reinforced resin, a thermosetting resin foam reinforced with glass filaments is preferred. As the thermosetting resin, a rigid urethane resin is preferred. The fiber-reinforced resin may also contain solid fillers such as silica sand, fly ash, and rubber chips. Specifically, Eslon Neolumber FFU (registered trademark, manufactured by Sekisui Chemical Co., Ltd., hereinafter also referred to as "FFU") can be suitably used as the fiber-reinforced resin. Eslon Neolumber FFU is a thermosetting resin foam obtained by impregnating glass filaments aligned in a predetermined direction with a thermosetting resin, molding it into a predetermined shape, and curing it. The length direction of the glass filaments is preferably the length direction of the railway component. The railway component made of fiber-reinforced resin may include a portion made of fiber-reinforced resin and a portion made of dissimilar materials such as rubber or resin sheets. The type of wood is not limited. Wooden railway components may include parts made of wood and parts made of other materials such as rubber or resin sheets. Thermoplastic resins may contain solid fillers such as silica sand, fly ash, or rubber chips. Furthermore, railway components made of thermoplastic resins may include parts made of thermoplastic resin and parts made of dissimilar materials such as rubber or resin sheets.

[0011] Railway components have an anti-slip layer. For example, an anti-slip layer is provided on the upper surface of longitudinal sleepers, transverse sleepers, or walking boards to create a landing area. Examples of materials for the anti-slip layer include cured products of thermosetting resin compositions containing thermosetting resins, and dried products of paints containing resins and solvents. The anti-slip layer may have both a portion made of the cured product of the thermosetting resin composition and a portion made of the dried product of the paint. The type of thermosetting resin is not particularly limited. Examples include unsaturated polyester, urethane resin, epoxy resin, and phenolic resin. The type of paint is not particularly limited. Examples include acrylic resin paint, epoxy resin paint, urethane resin paint, acrylic urethane resin paint, polyester resin paint, silicone resin paint, etc.

[0012] The thermosetting resin composition or coating may contain a solid filler. That is, the resin protrusion may contain granular material with a diameter smaller than the height of the resin protrusion. For example, particulate fillers that contribute to viscosity increase include urethane resin chips, glass powder, silica sand, calcium carbonate, zeolite, and bentonite. The average particle size of the particulate filler is preferably 0.05 mm or more and 2 mm or less. The average particle size of the particulate filler is a value obtained by sieving. The ratio R / Az, which represents the ratio of the average particle diameter R of the particulate filler to the height Az of the resin protrusion described later, is preferably 0.003 or more and 0.67 or less, and more preferably 0.01 or more and 0.5 or less.

[0013] The anti-slip layer includes a plurality of resin protrusions. The shape of the resin protrusions is preferably, for example, a ridge or a dot-like projection. For the ridge, it is preferable that the cross-sectional shape perpendicular to the length direction of the ridge is uniform. The planar shape of the dot-like projection when viewed from above is not particularly limited. Examples include a circle, a polygon, etc. The cross-sectional shape perpendicular to the bottom surface of the dot-like projection is not particularly limited. For example, it may be a rectangle (columnar projection), a mountain shape that gradually rises towards the center, a trapezoid with a flat top surface, or a triangle.

[0014] <First Embodiment> Figures 1-3 show an example of a longitudinal sleeper, which is a first embodiment of the railway component of the present invention. Figure 1 is a plan view, Figure 2 is a cross-sectional view along line AA in Figure 1, and Figure 3 is a cross-sectional view along line BB in Figure 1. A vertical sleeper 11 is a sleeper positioned beneath each of a pair of rails 1, 1, with the length of the sleeper parallel to the length of the rail (X direction). Typically, multiple vertical sleepers 11 are arranged continuously along the length of rail 1. When walking near rail 1, the upper surfaces of the vertical sleepers 11, on both sides of rail 1, can be used as a walkway. If the material of the vertical sleeper 11 is a fiber-reinforced resin containing long fibers, the longitudinal direction of the glass long fibers is preferably the longitudinal direction (X direction) of the vertical sleeper 11.

[0015] As shown in Figures 1 and 2, the vertical sleeper 11 has an anti-slip layer 12 on the upper surfaces on both sides of the rail 1. As shown in Figures 1 and 3, the surface of the anti-slip layer 12 has multiple protrusions 12a (resin protrusions) with the Y direction as its longitudinal direction and multiple recesses 12b with the Y direction as its longitudinal direction, which are alternately present at regular intervals along the X direction.

[0016] As shown in Figure 3, the cross-sectional shape of the convex ridge 12a perpendicular to the Y direction is rectangular. In the Z direction, the height Az (height of the resin protrusion) from the bottom surface of the groove 12b to the top of the ridge 12a is preferably 3 mm or more and 15 mm or less. If the height Az is above the lower limit of the above range, the anti-slip effect is further enhanced. If it is below the upper limit, the amount of material required to form the anti-slip layer is not excessive, making it easier to keep costs down. In the X direction, the width Bx of the ridge 12a is preferably 3 mm or more and 30 mm or less. If the width Bx is above the lower limit of the above range, the strength of the ridge 12a is increased. If it is below the upper limit, the anti-slip effect is increased. In the X direction, the ratio Cx / Bx, which represents the ratio of the width Cx of the groove 12b (the distance Cx between adjacent protrusions 12a) to the width Bx, is preferably 1 / 1 or more and 3 / 1 or less. The anti-slip effect is further enhanced when Cx / Bx is above the lower limit and below the upper limit of the above range. The ratio of height Az to width Bx, Az / Bx, is preferably between 0.2 / 1 and 1 / 1. A value above the lower limit of the above range enhances the anti-slip effect. A value below the upper limit ensures the strength of the raised ridges.

[0017] <Second Embodiment> Figure 4 is a plan view showing an example of a longitudinal sleeper, which is a second embodiment of the railway component of the present invention. The same reference numerals are used for components that are the same as in the first embodiment, and their descriptions may be omitted. As shown in Figure 4, the surface of the anti-slip layer 12 has multiple protrusions 12a (resin protrusions) and multiple recesses 12b that are alternately present at regular intervals along the X direction. In the example in Figure 4, the longitudinal directions of the protrusions 12a and recesses 12b are oblique to the X and Y directions. The angle θ (θ ≤ 90°) between the longitudinal directions of the protrusions 12a and recesses 12b and the X direction is preferably 45° or more and 90° or less, and more preferably 60° or more and 90° or less. The anti-slip effect is enhanced when the angle θ is between 45° and 90°. Also, when the angle θ is between 45° and 90°, water in the grooves 12b of the anti-slip layer 12 can easily flow out of the anti-slip layer 12 from both ends in the Y direction. As a result, it is easier to prevent water from remaining in the grooves 12b and freezing. In this embodiment, the cross-sectional shape of the protrusion 12a perpendicular to the Y direction is rectangular. The preferred ranges of height Az, width Bx, width Cx, Cx / Bx, and Az / Bx are the same as in the first embodiment.

[0018] <Third Embodiment> Figures 5-7 show an example of a longitudinal sleeper, which is a third embodiment of the railway component of the present invention. Figure 5 is a plan view, Figure 6 is a cross-sectional view along line AA in Figure 5, and Figure 7 is a cross-sectional view along line BB in Figure 5. Components identical to those in the first embodiment are denoted by the same reference numerals, and their descriptions may be omitted. As shown in Figures 5 and 6, the vertical sleeper 11 has an anti-slip layer 14 on the upper surfaces on both sides of the rail 1. As shown in Figures 6 and 7, the surface of the anti-slip layer 14 has multiple rectangular prism-shaped dot-like protrusions 14a (resin protrusions) at regular intervals along the X and Y directions. As shown in Figures 6 and 7, the cross-sectional shape of the dot-like protrusions 14a perpendicular to the X direction and perpendicular to the Y direction are both rectangular. The space between adjacent dot-like protrusions 14a is a flat section 14b consisting of the bottom surface of a grid-like groove.

[0019] In the Z direction, the height Az (height of the resin protrusion) from the flat portion 14b to the apex of the point-like projection 14a is preferably 3 mm or more and 15 mm or less. If the height Az is above the lower limit of the above range, the anti-slip effect is further enhanced. If it is below the upper limit, the amount of material required to form the anti-slip layer is not excessive, making it easier to keep costs down. In the X direction, the width Bx of the dot-like projections 14a is preferably 3 mm or more and 30 mm or less. If the width Bx is greater than or equal to the lower limit of the above range, the strength of the dot-like projections 14a is increased. If it is less than or equal to the upper limit, the anti-slip effect is increased. In the X direction, the ratio Cx / Bx, which represents the ratio of the width Cx of the flat portion 14b (the distance Cx between adjacent point-like protrusions 14a) to the width Bx, is preferably 1 / 1 or more and 3 / 1 or less. The anti-slip effect is further enhanced when Cx / Bx is above the lower limit and below the upper limit of the above range. The ratio of height Az to width Bx, Az / Bx, is preferably between 0.2 / 1 and 1 / 1. A value above the lower limit of the above range enhances the anti-slip effect. A value below the upper limit ensures the strength of the raised ridges. In the Y direction, the width By of the dot-like protrusions 14a is preferably 3 mm or more and 30 mm or less. If the width By is greater than or equal to the lower limit of the above range, the strength of the dot-like protrusions 14a is increased. If it is less than or equal to the upper limit, the anti-slip effect is increased. In the Y direction, Cy / By, which represents the ratio of the width Cy of the flat portion 14b (the distance between adjacent point-like protrusions 14a, Cy) to the width By, is preferably 1 / 1 or more and 3 / 1 or less. The anti-slip effect is further enhanced when Cy / By is above the lower limit and below the upper limit of the above range. The ratio of height Az to width By, Az / By, is preferably between 0.2 / 1 and 1 / 1. A value above the lower limit of the above range enhances the anti-slip effect. A value below the upper limit ensures the strength of the raised grooves. The ratio By / Bx, which represents the ratio of the width By in the Y direction to the width Bx in the X direction of the point-like projection 14a, is preferably 1 / 1, but may be 0.5 / 1 or more and 5 / 1 or less.

[0020] <Fourth Embodiment> Figures 8-10 show an example of a horizontal sleeper, which is a fourth embodiment of the railway component of the present invention. Figure 8 is a plan view, Figure 9 is a cross-sectional view along line AA in Figure 8, and Figure 10 is a cross-sectional view along line BB in Figure 8. A horizontal sleeper 21 is a sleeper placed beneath a pair of rails 1, 1, with the length direction (X direction) of the rail 1 being perpendicular to the length direction of the sleeper. Typically, multiple horizontal sleepers 21 are placed at intervals along the length direction of the rails 1, 1, with rails 1 placed at both ends of the horizontal sleepers 21. When walking near the rails 1, the upper surface of the horizontal sleepers 21 between the pair of rails 1, 1 can be used as a walkway. If the material of the horizontal sleeper 21 is a fiber-reinforced resin containing long fibers, the longitudinal direction of the glass long fibers is preferably the Y direction.

[0021] As shown in Figures 8 and 9, the horizontal sleeper 21 has an anti-slip layer 22 on the upper surface between the pair of rails 1, 1. As shown in Figures 8 and 10, the surface of the anti-slip layer 22 has multiple protrusions 22a (resin protrusions) with the Y direction as its longitudinal direction and multiple recesses 22b with the Y direction as its longitudinal direction, which are alternately present at regular intervals along the X direction. Furthermore, as shown in Figures 8 and 9, the surface of the anti-slip layer 22 has a strip-shaped cut region 22c with the X direction as its length. The cut region 22c intersects with the length direction (Y direction) of the protrusions 22a and is a region where the protrusions 22a do not exist. In this embodiment, since the length direction of the groove 22b is the length direction (Y direction) of the horizontal sleeper 21, by providing a cut region 22c that extends in the X direction, water in the groove 22b can easily flow out of the anti-slip layer 22 from both ends in the X direction. As a result, it is easier to prevent water from remaining in the groove 22b and freezing. In other words, by providing a strip-shaped cut region 22c that intersects the longitudinal direction of the convex ridge 22a, and by making the longitudinal direction of the cut region 22c intersect the longitudinal direction of the transverse sleeper 21, the drainage of the anti-slip layer 22 can be improved. The angle (right angle or acute angle) between the longitudinal direction of the cut region 22c and the longitudinal direction (Y direction) of the transverse sleeper 21 is preferably 45° or more and 90° or less, and more preferably 60° or more and 90° or less.

[0022] As shown in Figure 10, the cross-sectional shape of the convex ridge 22a perpendicular to the Y direction is a mountain shape with a raised center. In the Z direction, the height Az (height of the resin protrusion) from the bottom surface of the groove 22b to the top of the ridge 22a is preferably 3 mm or more and 15 mm or less. If the height Az is above the lower limit of the above range, the anti-slip effect is further enhanced. If it is below the upper limit, the amount of material required to form the anti-slip layer is not excessive, making it easier to keep costs down. In the X direction, the width Bx of the ridge 22a is preferably 3 mm or more and 30 mm or less. If the width Bx is above the lower limit of the above range, the strength of the ridge 22a is increased. If it is below the upper limit, the anti-slip effect is increased. In the X direction, the ratio Cx / Bx, which represents the ratio of the width Cx of the groove 22b (the distance Cx between adjacent protrusions 22a) to the width Bx, is preferably 1 / 1 or more and 3 / 1 or less. The anti-slip effect is further enhanced when Cx / Bx is above the lower limit and below the upper limit of the above range. The ratio of height Az to width Bx, Az / Bx, is preferably between 0.2 / 1 and 1 / 1. A value above the lower limit of the above range enhances the anti-slip effect. A value below the upper limit ensures the strength of the raised ridges. As shown in Figure 9, if the width D of the gap region in the Y direction is too small, water flow will be poor, and if it is too large, the anti-slip effect will decrease. Also, if the length By of the protrusions 22a in the Y direction is too small, the anti-slip effect will decrease, and if it is too large, water will tend to accumulate in the grooves 22b. For example, the length By of the protrusion 22a is preferably 10 mm or more and 500 mm or less, and more preferably 30 mm or more and 200 mm or less. The width D of the cut region is preferably 10 mm or more and 80 mm or less, and more preferably 20 mm or more and 50 mm or less. The ratio D / By, which represents the ratio of the width D of the cut region to the length By of the protrusion 22a, is preferably 0.05 / 1 or more and 7 / 1 or less, and more preferably 0.2 / 1 or more and 5 / 1 or less. The ratio By / Bx, which represents the ratio of the width By in the Y direction to the width Bx in the X direction of the convex ridge 22a, is preferably 0.5 / 1 or more and 1 / 1 or less, may be 0.1 / 1 or more and 12 / 1 or less, and preferably 0.2 / 1 or more and 5 / 1 or less.

[0023] <Fifth Embodiment> Figure 11 is a plan view showing an example of a horizontal sleeper, which is a fifth embodiment of the railway component of the present invention. The same reference numerals are used for components that are the same as those in the fourth embodiment, and their descriptions may be omitted. As shown in Figure 11, the surface of the anti-slip layer 22 has multiple raised ridges 22a (resin protrusions) and multiple recessed grooves 22b that alternate at regular intervals along the Y direction. In the example in Figure 11, the longitudinal directions of the raised ridges 22a and recessed grooves 22b are oblique to the X and Y directions. The angle θ (θ ≤ 90°) between the longitudinal directions of the raised ridges 22a and recessed grooves 22b and the X direction is preferably 45° or more and 90° or less. The anti-slip effect is further enhanced when the angle θ is 45° or more and 90° or less. Furthermore, in order to allow water in the grooves 22b of the anti-slip layer 22 to easily flow out of the anti-slip layer 22 from both ends in the X direction, it is preferable that the angle θ is 45° or more and 60° or less. In this embodiment, the cross-sectional shape of the protrusion 22a perpendicular to the Y direction is rectangular. The preferred ranges of height Az, width Bx, width Cx, Cx / Bx, and Az / Bx are the same as in the fourth embodiment.

[0024] In this embodiment, if the angle θ is large (for example, 60° or more and 90° or less), a cut region (not shown) intersecting the length direction of the protrusion 22a may be provided as needed. The length direction of the cut region is provided so as to intersect the length direction (Y direction) of the horizontal sleeper 21. The preferred range of the angle (right angle or acute angle) between the longitudinal direction of the cut region and the longitudinal direction of the horizontal sleeper 21 is the same as in the fourth embodiment. The preferred ranges of the width D, D / Bx, and D / By are the same as in the fourth embodiment.

[0025] <Sixth Embodiment> Figures 12-14 show an example of a transverse sleeper, which is a sixth embodiment of the railway component of the present invention. Figure 12 is a plan view, Figure 13 is a cross-sectional view along line AA in Figure 12, and Figure 14 is a cross-sectional view along line BB in Figure 12. Components identical to those in the fourth embodiment are denoted by the same reference numerals, and their descriptions may be omitted. As shown in Figures 12 and 13, the horizontal sleeper 21 has an anti-slip layer 24 on the upper surface between the pair of rails 1, 1. As shown in Figures 13 and 14, the surface of the anti-slip layer 24 has multiple rectangular prism-shaped dot-like protrusions 24a (resin protrusions) at regular intervals along the X and Y directions. As shown in Figures 13 and 14, the cross-sectional shape of the dot-like protrusions 24a perpendicular to the X direction and perpendicular to the Y direction are both rectangular. The space between adjacent dot-like protrusions 24a is a flat section 24b consisting of the bottom surface of a grid-like groove.

[0026] The preferred ranges for the height Az (height of the resin protrusion) from the flat portion 24b to the apex of the point-like projection 24a in the Z direction, the width Bx of the point-like projection 24a in the X direction, and the width By of the point-like projection 24a in the Y direction are the same as in the third embodiment. In the X direction, the preferred range of Cx / Bx, which represents the ratio of the width Cx of the flat portion 24b (the distance Cx between adjacent point-like protrusions 24a) to the width Bx, is the same as in the third embodiment. The preferred range of Az / Bx, which represents the ratio of height Az to width Bx, is the same as in the third embodiment. In the Y direction, the preferred range of Cy / By, which represents the ratio of the width Cy of the flat portion 24b (the distance between adjacent point-like protrusions 24a) to the width By, is the same as in the third embodiment. The preferred range of Az / By, which represents the ratio of height Az to width By, is the same as in the third embodiment. The preferred range of By / Bx, which represents the ratio of the width By in the Y direction to the width Bx in the X direction, is the same as in the third embodiment.

[0027] <Seventh Embodiment> Figures 15-17 show an example of a walking board, which is the seventh embodiment of the railway component of the present invention. Figure 15 is a plan view, Figure 16 is a cross-sectional view along line AA in Figure 15, and Figure 17 is a cross-sectional view along line BB in Figure 15. The walking board 31 is a plate-shaped member installed separately from the sleepers, and is laid along the rail 1 to form a walkway. Typically, it is placed between a pair of rails 1, 1. For example, multiple walking boards 31 are arranged continuously along the length direction (X direction) of the rail 1. When walking near the rail 1, the upper surface of the walking board 31 is used as the walkway. The longitudinal direction of the walkway board 31 is preferably parallel to the longitudinal direction (X direction) of the rail. If the material of the walkway board 31 is a fiber-reinforced resin containing long fibers, the longitudinal direction of the glass long fibers is preferably the longitudinal direction of the walkway board 31.

[0028] As shown in Figures 15 and 16, the walking board 31 has an anti-slip layer 32 over its entire upper surface. As shown in Figures 15 and 17, the surface of the anti-slip layer 32 has multiple protrusions 32a (resin protrusions) with the Y direction as its longitudinal direction and multiple recesses 32b with the Y direction as its longitudinal direction, which are alternately present at regular intervals along the X direction.

[0029] As shown in Figure 17, the cross-sectional shape of the convex ridge 32a perpendicular to the Y direction is rectangular. The preferred ranges for the height Az (height of the resin protrusion) from the bottom surface of the groove 32b to the apex of the protrusion 32a in the Z direction, and the preferred range for the width Bx of the protrusion 32a in the X direction, are the same as in the first embodiment. In the X direction, the preferred range of Cx / Bx, which represents the ratio of the width Cx of the groove 32b (the distance Cx between adjacent protrusions 32a) to the width Bx, is the same as in the first embodiment. The preferred range of Az / Bx, which represents the ratio of height Az to width Bx, is the same as in the first embodiment.

[0030] <Eighth Embodiment> Figure 18 is a plan view showing an example of a walkway, which is the eighth embodiment of the railway component of the present invention. The same reference numerals are used for components that are the same as those in the seventh embodiment, and their descriptions may be omitted. As shown in Figure 18, the surface of the anti-slip layer 32 has a plurality of raised ridges 32a (resin protrusions) and a plurality of recessed grooves 32b that are alternately present at regular intervals along the X direction. In the example in Figure 18, the longitudinal directions of the raised ridges 32a and recessed grooves 32b are oblique to the X and Y directions. The preferred range of the angle θ (θ ≤ 90°) between the longitudinal directions of the raised ridges 12a and recessed grooves 12b and the X direction is the same as in the second embodiment. In this embodiment, the cross-sectional shape of the protrusion 32a perpendicular to the Y direction is rectangular. The preferred ranges of height Az, width Bx, width Cx, Cx / Bx, and Az / Bx are the same as in the second embodiment.

[0031] <Ninth Embodiment> Figures 19-21 show an example of a walking board, which is the ninth embodiment of the railway component of the present invention. Figure 19 is a plan view, Figure 20 is a cross-sectional view along line AA in Figure 19, and Figure 21 is a cross-sectional view along line BB in Figure 19. Components identical to those in the seventh embodiment are denoted by the same reference numerals, and their descriptions may be omitted. As shown in Figures 19 and 20, the walking board 31 has an anti-slip layer 34 over its entire upper surface. As shown in Figures 20 and 21, the surface of the anti-slip layer 34 has multiple rectangular prism-shaped dot-like protrusions 34a (resin protrusions) at regular intervals along the X and Y directions. As shown in Figures 20 and 21, the cross-sectional shape of the dot-like protrusions 34a perpendicular to the X direction and perpendicular to the Y direction are both rectangular. The space between adjacent dot-like protrusions 34a is a flat section 34b consisting of the bottom surface of a grid-like groove.

[0032] The preferred ranges for the height Az (height of the resin protrusion) from the flat portion 34b to the apex of the point-like projection 34a in the Z direction, the width Bx of the point-like projection 34a in the X direction, and the width By of the point-like projection 34a in the Y direction are the same as in the third embodiment. In the X direction, the preferred range of Cx / Bx, which represents the ratio of the width Cx of the flat portion 34b (the distance Cx between adjacent point-like protrusions 34a) to the width Bx, is the same as in the third embodiment. The preferred range of Az / Bx, which represents the ratio of height Az to width Bx, is the same as in the third embodiment. In the Y direction, the preferred range of Cy / By, which represents the ratio of the width Cy of the flat portion 34b (the distance between adjacent point-like protrusions 34a) to the width By, is the same as in the third embodiment. The preferred range of Az / By, which represents the ratio of height Az to width By, is the same as in the third embodiment. The preferred range of By / Bx, which represents the ratio of the width By in the Y direction to the width Bx in the X direction, is the same as in the third embodiment.

[0033] <Variation> The railway components of the present invention are not limited to the embodiments described above, and can be modified and altered in various ways within the scope of the technical ideas described in the claims. For example, the cross-sectional shape of the resin protrusion may be a trapezoid as shown in Figure 22, or a triangle as shown in Figure 23. In Figures 22 and 23, reference numeral 7 indicates a railway component, and reference numerals 5 and 6 indicate anti-slip layers. Reference numerals 5a and 6a indicate resin protrusions, such as ridges or dot-like projections. Reference numerals 5b and 6b indicate grooves between adjacent ridges, or flat areas between adjacent dot-like projections.

[0034] <Manufacturing method> The railway component of the above embodiment can be manufactured by applying a liquid composition containing resin to the upper surface of a base material such as a sleeper or walking board to form a coating film having protrusions, and then solidifying the coating film to form an anti-slip layer including resin protrusions. The liquid composition can be applied using known methods such as brush application, roller application, or spray application. As a method for forming a coating film having protrusions, for example, the liquid composition can be applied to an area where a non-slip layer is to be formed to create a coating film of uniform thickness, and then grooves can be formed in the coating film using a comb-shaped jig. Forming streaky grooves in the coating film can create a coating film with protrusions. Forming grid-like grooves in the coating film can create a coating film with dot-like protrusions. The viscosity of the liquid composition is preferably 1000 to 10000 cps. Here, the viscosity value of the liquid composition is obtained by a rotational viscometer at 20 to 25°C. As a comb-shaped jig, for example, a roller with a comb-shaped contact surface can be used. Alternatively, a coating film consisting only of the protrusions may be formed on the substrate using a coating coater from which the liquid composition is discharged from a portion corresponding to the protrusions.

[0035] When a thermosetting resin composition is used as the liquid composition, a method of hardening the coating film by heating can be used. When a paint is used as the liquid composition, a method of hardening the coating film by drying can be used. The hardened coating can be used as an anti-slip layer. Alternatively, after the coating has hardened, a further coating may be applied to form an anti-slip layer. When a coating film having protrusions has solidified, if there are areas on the upper surface of the substrate where the substrate is exposed, the coating should be applied to at least the areas where the substrate is exposed. For example, if the substrate is exposed within grooves formed in the coating film using a comb-shaped jig, or if a coating film consisting only of protrusions is formed on the substrate, the coating should be applied to at least the areas where the substrate is exposed. It is even more preferable to apply the coating to the entire surface of the area that will become the anti-slip layer to improve weather resistance.

[0036] <Mechanism of Action> According to the above embodiment, a good anti-slip effect can be obtained because the anti-slip layer has multiple resin protrusions. Compared to the conventional method of creating an uneven surface with granular material, this method of providing resin protrusions allows for a larger difference between the protrusions and recesses, thus providing a good anti-slip effect even when the frozen layer on the walking surface becomes thick.

[0037] Furthermore, because the coating film present in the recesses or flat areas between adjacent resin protrusions can be made thinner compared to conventional methods of creating surface irregularities with granular material, the phenomenon of fine cracks occurring in the coating film due to expansion and contraction of the substrate (such as railway ties) due to temperature changes is suppressed. For example, if the base material is a fiber-reinforced resin containing long fibers, it is not reinforced in the direction perpendicular to the fiber direction, making it susceptible to minute expansion and contraction due to temperature changes, etc., and thus the crack suppression effect by making the coating film thin in recessed or flat areas is greater. In particular, since the walking direction of horizontal sleepers is perpendicular to the fiber direction, a good anti-slip effect can be obtained by providing protrusions of sufficient height parallel to the fiber direction, and crack occurrence can be suppressed by forming a thin coating film in the grooves parallel to the fiber direction. [Examples]

[0038] (Example 1) A vertical railway sleeper having the configuration shown in Figures 1-3 was manufactured. The material used for the vertical sleeper was "FFU" manufactured by Sekisui Chemical Co., Ltd. The material used to form the raised grooves was a thermosetting resin composition containing unsaturated polyester resin, urethane resin chips, and No. 7 silica sand. The length of the raised groove was perpendicular to the length of the rail (Y direction), the height Az of the raised groove was 5 mm, the width Bx of the raised groove was 10 mm, and the width Cx of the groove was 12 mm. A coating film having raised ridges was formed using the aforementioned thermosetting resin composition, and after the coating film was heat-cured, the entire surface was further coated with acrylic urethane resin paint to form an anti-slip layer.

[0039] (Example 2) A horizontal railway sleeper with the configuration shown in Figures 8-10 was manufactured. The material used for the horizontal sleeper was "FFU" manufactured by Sekisui Chemical Co., Ltd. The material used to form the raised ridges was a mixed paint of acrylic urethane resin paint and glass powder. The length direction of the protrusion is perpendicular to the length direction of the rail (Y direction), and the length direction of the cut area is parallel to the length direction of the rail (X direction). The height Az of the protrusion was 5 mm, the width Bx of the protrusion was 10 mm, the width Cx of the groove was 12 mm, the length By of the protrusion was 100 mm, and the width D of the cut area was 10 mm. A coating film having raised ridges was formed using the aforementioned mixed paint, and the coating film was dried to form an anti-slip layer.

[0040] (Example 3) A vertical railway sleeper with the configuration shown in Figures 1-3 was manufactured. The material used for the vertical sleeper was "FFU" manufactured by Sekisui Chemical Co., Ltd. The material used to form the raised grooves was a mixed paint of acrylic urethane resin paint and No. 7 silica sand. The length of the raised groove was perpendicular to the length of the rail (Y direction), the height Az of the raised groove was 8 mm, the width Bx of the raised groove was 15 mm, and the width Cx of the groove was 15 mm. A coating film having raised ridges was formed using the aforementioned mixed paint, and the coating film was dried to form an anti-slip layer. [Explanation of Symbols]

[0041] 1 rail 2 Thai plates 5, 6 Anti-slip layer 5a, 6a Resin protrusion 5b, 6b Concave groove, flat part 7. Railway components 11. Vertical sleepers 12 Anti-slip layer 12a Convex strip 12b Groove 14 Anti-slip layer 14a Punctate process 14b Flat part 21 Side pillow 22 Anti-slip layer 22a Convex strip 22b Groove 22c Gap area 24 Anti-slip layer 24a Punctate process 24b Flat part 31 Walking board 32 Anti-slip layer 32a Convex stripe 32b Groove 32c Separation area 34 Anti-slip layer 34a punctate process 34b Flat part

Claims

1. A railway component having a landing area when walking near railway rails, The aforementioned landing area is a railway component comprising a non-slip layer including a plurality of resin protrusions.

2. The railway member according to claim 1, wherein the railway member is a walkway plate placed between a pair of rails, a sleeper placed under both of the pair of rails, or a sleeper placed under each of the pair of rails.

3. The railway member according to claim 1, wherein the resin protrusion is a ridge or a point-like projection.

4. The railway member according to claim 3, wherein the resin protrusion is a ridge, and the angle θ between the length direction of the ridge and the length direction of the rail is 45° or more and 90° or less.

5. The railway member according to claim 3, wherein the resin protrusion is a ridge, and there is a strip-shaped region that intersects the length direction of the ridge, and there is a break region where the ridge is absent.

6. The railway member according to any one of claims 1 to 5, wherein the resin protrusion includes granular material having a diameter smaller than the height of the resin protrusion.

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