JP3464166B2 - Sleeper and rail installation structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeper and rail installation structure, and is suitable for a sleeper to be laid under a rail erected from a land to a bridge.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, sleeper 1 '
Is known to be made by processing wood or concrete into a square shape, and this square sleeper 1'is laid under the rail 10 'so as to intersect the rail 10' at 90 degrees.

[0003]

[Problems to be Solved by the Invention]

However, as shown in FIG. 6, a square sleeper 1'is laid so as to intersect the rail 10 'at 90 degrees even at the boundary between the land 20' and the bridge 21 '. , If the rail 10 'is inclined with respect to the boundary line 22' between the land 20 'and the bridge 21',
The sleeper 1'at the boundary is land 22 'and bridge 2
It will be laid across both 1 '. Therefore, it is difficult to construct the boundary portion, and there is a problem in terms of strength.

Further, the conventional sleeper made of wood has a resource problem, and the sleeper made of concrete has a problem that it is heavy and poor in workability.

Therefore, the present invention has been made to solve the above problems, and the first object of the present invention is to easily work even at the boundary between a land and a bridge, and further, at this boundary. The purpose of the present invention is to provide a sleeper and rail installation structure that can secure sufficient strength.

[0007] A second object of the present invention can be easily performed the rail installation work is to provide a superior sleepers and rails installation structure durability.

[0008]

[Means for Solving the Problems] In order to solve the first problem, the sleeper according to the invention of claim 1 is a land and a bridge.
A sleeper that is laid on a rail that is bridged to a rail, and a sleeper that is laid on a land or a bridge below the rail so as to intersect with the rail. The sleeper main body is formed so as to be inclined with respect to the main body, and the sleeper body is made of a plate material made of a fiber-reinforced hard synthetic resin foam.

In the sleeper having the above structure, even if the rail is inclined with respect to the boundary line between the land and the bridge, one slanted side of the sleeper body should be along the slope of the boundary line. Can be laid. For this reason, the sleeper can be laid so as not to straddle both the bridge and the land even at this boundary portion.

Moreover, since the sleeper body is made of fiber-reinforced hard synthetic resin foam, it has sufficient strength as a sleeper and is lightweight.

In order to solve the above-mentioned second problem, the sleeper according to the invention of claim 2 is the invention of claim 1 in which the sleeper body is composed of a plurality of plate materials made of fiber-reinforced hard synthetic resin foam. And at least one plate member is provided such that its fiber direction is different from the fiber directions of the other plate members.

In the sleeper constructed as described above, at least one plate material of the sleeper body is provided so that its fiber direction is different from the fiber directions of the other plate materials, so that there are a plurality of fiber directions in the sleeper body. Therefore, it has excellent strength.

[0013]

DETAILED DESCRIPTION OF THE INVENTION (First Embodiment)

FIG. 1 is a plan view including a partial cutout of a sleeper according to a first embodiment of the present invention. In the figure, the arrow shown on the plate material indicates the direction in which the long fiber members are aligned. FIG. 2 is a plan view of a rail installation structure using the sleeper of FIG.

The sleeper according to the embodiment of the present invention is a plate material 3a, 3b, 3 made of fiber reinforced rigid synthetic resin foam formed so that long fiber members are aligned in a certain direction.
It is configured by laminating and bonding a plurality of layers (three layers in this embodiment) of c.

Each of the plate members 3a ... Has the same shape in plan view, and is formed in a trapezoidal shape in which opposite sides in the lateral direction (X direction in the drawing) are parallel. By laminating and adhering the plate materials 3a ..., The sleeper body 1 has a shape in which one side in a direction intersecting with the rail 10 (longitudinal direction, Y direction in the drawing) is inclined with respect to the rail 10 when laid. Has been formed.

As the kind of foamed resin constituting this plate material, for example, a hard thermosetting resin such as urethane, epoxy resin, vinyl ester resin, unsaturated polyester resin or phenol resin is preferably used. . Incidentally, in the foamed resin, in order to improve the compression strength and reduce the cost, calcium carbonate, gypsum, talc, aluminum hydroxide, an inorganic filler such as clay, or shirasu balloon,
Light weight aggregates such as perlite and glass balloons may be added.

The fiber for reinforcing the hard resin foam material of the plate material may be, for example, any of inorganic fiber such as glass fiber, carbon fiber, metal fiber, etc., organic fiber such as natural fiber, synthetic fiber, etc. Glass fiber is suitable from the standpoint of economy.

As the glass fiber, glass roving,
Examples thereof include glass roving cloth, glass mat, and continuous strand mat. This fiber may be used alone, may be used by laminating two or more layers, or may be used by mixing long fiber and short fiber.

The fibers in the plate material are aligned in a fixed direction, but the directionality is made different by the plate materials 3a .... Specifically, as shown in FIG. 1, the fibers are aligned in the longitudinal direction (Y direction shown in the figure) in the upper and lower plate materials 3a and 3c, and in the lateral direction X in the intermediate plate material 3c. There is.

The sleeper of the first embodiment has the above-mentioned structure. Next, the rail installation structure according to claims 3 and 4 using this sleeper will be described with reference to FIG.

This rail installation structure is used for land 20 and bridge 21.
A pair of parallel rails 10 laid between and and the rails 1.
It is composed of a plurality of sleepers 1 and 2 laid under the rail 10 so as to intersect with 0.

Of the plurality of sleepers 1 and 2, the sleeper 2 laid outside the boundary portion between the land and the bridge (land portion and bridge portion) has a plan view shape as shown in FIG. Each side in the longitudinal direction Y is 90 with respect to the rail 10.
It is laid to cross (orthogonal) at a degree. These square sleepers 2 are laid in parallel with each other at a predetermined interval.

The trapezoidal sleeper 1 shown in FIG.
At the boundary between 0 and the bridge 21, the side in the lateral direction X is rail 1
It is laid so as to be substantially parallel to 0. Further, this trapezoidal sleeper 1 is laid so that one side in the longitudinal direction Y which is not orthogonal to the adjacent side (side in the lateral direction) is substantially parallel to the boundary line 22 between the land 20 and the bridge 21. There is. In addition,
In the present embodiment, the trapezoidal sleepers 1 are laid on both the land side and the bridge side of the boundary portion. These trapezoidal sleepers 1 are laid so as to be placed on either the land or the bridge, respectively. Also, this landside sleeper 1 and bridge side sleeper 1
Have a point-symmetrical shape and are laid at predetermined intervals so that the sides in the longitudinal direction Y are parallel to each other.

As described above, since the sleeper body 1 is composed of the plate material 3a, which is made of the fiber-reinforced hard synthetic resin foam, the sleeper body has sufficient strength as a sleeper and has a strength higher than that of conventional sleepers such as concrete. The weight can be reduced.

Moreover, since the fibers in the sleeper body 1 are oriented in two directions by the plurality of plate members 3a made of fiber-reinforced hard synthetic resin foam, the sleeper 1 has sufficient strength and durability. Is excellent.

At the boundary between the land 20 and the bridge 21 where the rail 10 is inclined to the boundary line 22, another sleeper 2
Even if trapezoidal sleepers 1 are laid continuously from
It can be laid so that it does not straddle both 0 and bridge 21. Therefore, the rail installation work can be easily performed, and the rail installation structure can have sufficient strength.

(Second Embodiment)

FIG. 3 is a plan view including a partial cutout of the sleeper according to the second embodiment of the present invention. In the figure, the arrows shown on the plate material are aligned with the long fiber members as in FIG. Indicates the direction of travel.

The sleeper of the second embodiment is formed by laminating plate materials 3a, 3b, 3c made of fiber reinforced hard resin foam in a plurality of layers (three layers in the second embodiment). The shape, material, etc. of ... Are similar to those of the first embodiment.

The fibers in this plate material are, as shown in FIG.
The upper and lower plate materials 3a and 3c are aligned in the longitudinal direction (Y direction shown in the drawing), and the intermediate layer plate material 3b is aligned in the direction parallel to the inclined side unlike the first embodiment. .

(Third Embodiment)

[0033] Figure 4 shows a sleeper according to a third embodiment of the present invention, (a) is a plan view, (b) is Ru <br/> Oh front view.

The sleeper 1 according to the third embodiment has a core material 5
And an end member 7 of a fiber-reinforced hard synthetic resin foam fixed to an edge portion of the core material 5 in a direction intersecting with the rail 10 (longitudinal direction Y) and formed so as to align the long fiber members in a fixed direction. Consists of.

This core material 5 is also formed from a fiber-reinforced hard synthetic resin foam in a trapezoidal shape in plan view. Stepped portions 5a having a constant depth are formed on each of the upper surface and the back surface of the core material 5 on two sides in the longitudinal direction. The steps 5a are formed along the respective sides.

The end member 7 is made of a plate material having a thickness substantially the same as the depth of the step portion 5a, and is fixed while being fitted in each step portion 5a. Adjacent sides (transverse direction X
The end member 7 located on the side (the side on the left side in FIG. 4) orthogonal to the side is formed in a square shape so as to fit with the step portion 5a. The end member 7 located on the side (the right side in FIG. 4) that is not orthogonal to the adjacent side (the side in the lateral direction X) is formed in a parallelogram shape so as to fit into the step 5a.

The fibers of the core material 5 and the end member 7 are aligned in the lateral direction X in the core material 5 and in the direction parallel to each side in the end member 7.

The sleeper of the third embodiment has the same advantages as those of the above-described embodiment, and in addition, since the engaging portion (step portion 5a) for engaging the end member 7 is formed on the core material 5, the core material is formed. 5
This has an advantage that the end member 7 and the end member 7 can be easily and firmly fixed to each other.

(Fourth Embodiment)

[0040] Figure 5 shows a sleeper according to a fourth embodiment of the present invention, (a) is a plan view, (b) is Ru <br/> Oh front view.

The sleeper of the fourth embodiment is fixed to the core material 5 and the edge portion (longitudinal direction Y) of the core material 5 in the direction intersecting with the rail 10 as in the third embodiment. And an end member 7 made of a fiber-reinforced hard synthetic resin foam formed so as to be aligned in a certain direction.

The core material 5 is also made of fiber-reinforced hard synthetic resin foam and has a trapezoidal shape in plan view. Here, the core material 5 is formed in a trapezoidal shape smaller than the final shape in plan view, and as shown in FIG. 5B, the core material 5 has a protrusion protruding outward from two sides in the longitudinal direction. The portion 5b is formed.
The protrusions 5b are formed along the respective sides.

The end members 7 are located on both sides of the core material 5 and are orthogonal to the adjacent side (side in the lateral direction X) (see FIG. 5).
The end member 7 located on the left side) is rectangular in plan view, and the end member 7 located on the side (right side in FIG. 5) not orthogonal to the adjacent side (side in the lateral direction X) is viewed in plan. It is formed in a parallelogram shape. Further, the end member 7 is provided with a concave portion 7a in which a protruding portion 5b of the core material 5 can be fitted and fitted, and is fixed to the core material 5 with the protruding portion 5b fitted and fitted in the concave portion 7a. There is. Further, each of the end members 7 has the same thickness as the core material 5, and is formed so as to be flush with the fixed core material 5 on the upper surface and the back surface.

The core material 5 and the end member 7 are both formed of a fiber-reinforced hard resin foam, but the fibers in the plate material are parallel to the sides in the core material 5 in the lateral direction and in the end member 7. They are arranged in different directions.

The sleeper of the fourth embodiment has the same advantages as those of the above-described embodiment, and also has an engaging portion (protruding portion 5b) with which the core member 5 and the end member 7 are engaged and an engaged member. Since the portion (concave portion 7b) is formed, the core material 5 and the end member 7 are formed.
It has an advantage that the and can be more firmly fixed.

(Other Embodiments)

The sleepers according to the above-mentioned respective embodiments have the above-mentioned advantages and have the above-mentioned advantages, but the present invention is not limited to the above-mentioned embodiments and is intended by the present invention. The design can be changed within the range. That is, although the sleepers of any of the above embodiments have been described as having a trapezoidal shape in a plan view, the invention according to claim 1 is not necessarily limited to this, and may have a non-square shape such as a triangular shape or a parallelogram shape. It is possible to adopt one.

[0048]

Since the sleeper according to claim 1 is composed of a plate material made of fiber reinforced hard synthetic resin foam, it has a rail extending over the land and a bridge, and the rail intersects with the rail.
Lighter than the sleepers, such as conventional concrete which has a sufficient strength as <br/> sleepers to be laid on land or bridge below the rails is achieved such that, less <br/> Kutomo side Since the rail has a shape that inclines with respect to the rail, even if the rail is at the boundary between the land and the bridge where the rail is inclined to the boundary line, the sleeper can be easily installed so that the sleeper does not cross both the bridge and the land. Therefore, the rail installation work is simple, and the strength of the boundary can be sufficiently secured.

The sleeper according to claim 2 is composed of a plurality of plate members made of fiber-reinforced hard synthetic resin foam , and a rail laid between the land and the bridge, and the rail crossing the rail.
Lighter than conventional sleepers which has a sufficient strength as <br/> sleepers to be laid on land or bridge below the rails is achieved so that, in addition, at least one sheet of sleepers body, Since the fiber directions are provided so as to be different from the fiber directions of the other plate materials, and the fiber directions in the sleeper body are plural, the strength is excellent and the durability can be further improved.

[Brief description of drawings]

FIG. 1 is a plan view including a partial cutout of a sleeper of a first embodiment of the present invention.

FIG. 2 shows a plan view of the rail installation structure of the first embodiment.

FIG. 3 shows a plan view including a partial cutout of a sleeper of the second embodiment of the present invention.

FIG. 4 shows a sleeper of a third embodiment of the invention,
(A) shows a plan view and (B) shows a front view.

FIG. 5 shows a sleeper of a fourth embodiment of the invention,
(A) shows a plan view and (B) shows a front view.

FIG. 6 shows a plan view of a conventional rail installation structure.

[Explanation of symbols]

1 sleeper body 3a Upper plate material 3b Intermediate layer plate material 3c Lower layer plate material 5 heartwood 5a Step (engagement part) 5b Projection (engagement part) 7 End member 7a Recessed part (engaged part)

Claims (4)

(57) [Claims] 1. A land and a rail which is hung on a bridge, a sleeper to be laid on land or bridge below the rails so as to intersect with the record <br/> Lumpur, sleepers body is laid The sleeper has a shape in which at least one side in the direction of intersection with the rail is inclined with respect to the rail when the rail is slid, and the sleeper body is made of a plate material made of a fiber-reinforced hard synthetic resin foam. . 2. The sleeper body is composed of a plurality of plate materials made of fiber-reinforced hard synthetic resin foam, and at least one plate material is provided such that its fiber direction is different from the fiber direction of the other plate materials. The sleeper according to claim 1, wherein 3. A rail installation structure comprising a rail laid between a land and a bridge, and a sleeper laid on the land or a bridge below the rail so as to intersect the rail, the rail installation structure comprising: The sleeper body located at the boundary is
At least one side in the direction of intersection with the rail is inclined, the one side is laid along the boundary line between the land and the bridge, and the sleeper body is made of fiber-reinforced hard synthetic resin foam A rail installation structure characterized by being composed of plate materials. 4. The sleeper body is composed of a plurality of plate materials made of fiber-reinforced hard synthetic resin foam, and at least one plate material is provided such that its fiber direction is different from the fiber direction of the other plate materials. The rail installation structure according to claim 3, wherein: