JP2006200236A - Sleeper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeper for effectively using resources, substantially hardly causing abrasion by friction with an installation surface such as a rail and a roadbed. <P>SOLUTION: This sleeper 1 has a structure of fixing short size packing 3 to the bottom surface 6 side of a long size body part 2. The body part 2 is molded by processing synthetic timber with glass long fiber embedded by arranging in the longitudinal direction. The packing 3 is a resin mold including a short fiber component 9 composed of chips of the synthetic timber generated when processing the body part 2 and an abrasion resistant chip 11 composed of synthetic rubber, and is higher in compressive strength and abrasion resistance than the body part 2. In the sleeper 1, the packing 3 is interposed between a bridge girder B being the installation surface and the body part 2, and abrasion of the body part 2 is hardly caused. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sleeper laid between a rail and an installation surface such as a road bed on which the rail is laid.

  Generally, a sleeper is arranged between a rail and an installation surface such as a road bed on which the rail is laid, and distributes and supports a load acting from the rail side on the road bed side. Conventional sleepers include wooden ones, concrete ones and resin foams. The sleeper trees will rub against the roadbed and rails as the train passes, and will gradually wear out, although the degree will vary slightly depending on the material. Worn sleepers are replaced with new sleepers and most are discarded.

A part of the sleeper tree that has been worn and replaced is reused as a building material as shown in Patent Document 1 below.
Japanese Patent Laid-Open No. 11-107405

  The conventional sleepers described above tend to wear intensively at portions that friction with the roadbed and rails as trains pass. However, from the viewpoint of safety in train operation, the sleeper that has been worn must be replaced even if the degree of wear or deterioration in other parts is very small. Some of the sleeper trees that have been replaced due to wear and the like are reused as building materials as in Patent Document 1, but most of them are discarded as industrial waste, and effective use of resources is expected. There is a problem that it is not.

  In addition, the conventional sleeper has a problem that since frictional force acts on a portion in contact with the roadbed or the rail, the wear on the part is intense and frequent replacement is required.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a sleeper that can be effectively used for resources with little wear due to friction with an installation surface such as a rail or a roadbed.

  The sleepers arranged between the rail and the installation surface such as the road bed and the bridge girder are gradually worn by receiving vibration from the rail. The part where the sleeper is worn concentrates on the installation surface and the contact part with the rail.

  The invention according to claim 1 provided on the basis of such knowledge is a sleeper provided with a long sleeper main body and disposed between a rail and an installation surface on which the rail is laid. The sleeper is characterized in that the main body is provided with one or more interposition members which are shorter than the sleeper main body and prevent either or both of the installation surface and the rail and the sleeper main body.

  In the sleeper of the present invention, an intermediate member for preventing contact between the installation surface or rail and the sleeper main body is mounted on the sleeper main body. Therefore, the sleeper of the present invention does not cause friction between the rail or the installation surface and the sleeper body, and the sleeper body does not wear.

  Further, in the sleeper of the present invention, the interposition member disposed in the portion contacting the installation surface or the rail is shorter than the sleeper main body. Therefore, for example, even when the interposition member is worn, the sleeper main body that constitutes a large part of the sleeper can be reused as it is, which contributes to effective use of resources.

  The invention according to claim 2 is a sleeper comprising a sleeper main body and an interposition member, and is arranged between a rail and an installation surface on which the rail is laid, wherein the interposition member includes an installation surface and It is interposed between one or both of the rails and the sleeper body, and is integrated with the sleeper body by forming a fitting structure. The sleeper body has a long surface extending in the longitudinal direction and a short surface extending in the short direction. A sleeper having a hand surface, wherein the interposition member is formed in surface contact with one or both of the longitudinal surface and the short surface of the sleeper body. .

  In the sleeper of the present invention, since the interposition member is interposed between the installation surface or rail and the sleeper main body, the sleeper main body does not come into direct contact with the installation surface or rail when laying. Therefore, friction between the rail or the installation surface and the sleeper body does not occur, and the sleeper body does not wear. In addition, since the sleeper of the present invention hardly wears the sleeper main body, even if the interposition member is worn after laying, the sleeper main body can be reused as it is.

  In the sleeper of the present invention, the interposition member is in surface contact with one or both of the long and short surfaces of the sleeper body to form a fitting structure, and is integrated with the sleeper body. Therefore, the sleeper of the present invention hardly deteriorates the bonding strength between the sleeper body and the interposition member even when an external force is applied in the longitudinal direction or the short direction of the sleeper body or left standing for a long time. , Can support the rail firmly.

  Further, the invention according to claim 3 provided to solve the same problem is a sleeper provided with a sleeper main body and an interposition member and disposed between a rail and an installation surface on which the rail is laid. The interposition member is interposed between one or both of the installation surface and the rail and the sleeper body, and the sleeper body opens to either the top surface or the bottom surface, and the top surface of the interposition member Alternatively, the sleeper has an opening that is recessed in a shape along part or all of the bottom and side surfaces, and an interposition member is fitted into the opening to form a sleeper body and a fitting structure. is there.

  In the sleeper of the present invention, an interposition member is interposed between the installation surface and rail and the sleeper main body when laying, and the sleeper main body does not directly contact the installation surface and rail. Therefore, the sleeper main body of the present invention does not rub against the rails or the installation surface and does not wear even if vibration is propagated by the passage of the train. In addition, since the sleeper of the present invention hardly wears the sleeper main body, the sleeper main body from which the worn interposition member is removed can be reused as it is.

  In the sleeper of the present invention, an interposition member is fitted into and integrated with an opening provided in the sleeper main body. Therefore, even if the sleeper of the present invention propagates vibration from the rail side or is left laid for a long time, the joint strength between the sleeper body and the interposition member is hardly lowered, and the rail can be firmly supported. .

  The invention described in claim 4 is a sleeper that includes a sleeper body and an interposed member, and is disposed between the rail and an installation surface on which the rail is laid. The sleeper body is interposed between one or both and the sleeper body, and the sleeper body has a protrusion protruding from either the top surface or the bottom surface, and the interposed member has an outer shape of the protrusion on the top surface or the bottom surface. The sleeper has an opening that is recessed in a shape along the shape of the sleeper, and the protrusion is fitted into the opening to form a sleeper body and a fitting structure.

  In the sleeper of the present invention, the interposition member is interposed between the sleeper main body and the installation surface and the rail at the time of laying, and the installation surface and the rail are not in direct contact with the sleeper main body. Therefore, the sleeper of the present invention does not cause friction between the rail or the installation surface and the sleeper body even if vibration or external force due to passing of the train propagates. Therefore, the sleeper of the present invention hardly wears the sleeper body over a long period after laying.

  Further, in the sleeper of the present invention, the sleeper main body is hardly worn even when the interposition member is worn after laying and it is necessary to replace it. Therefore, the sleeper of the present invention can reuse the sleeper main body as it is by removing the worn interposition member, and can effectively use resources.

  In the sleeper of the present invention, a protrusion protruding from either the top surface or the bottom of the sleeper main body is fitted into an opening provided on the interposition member side to form a fitting structure and integrated. Therefore, even if the sleeper of the present invention is affected by vibrations or external forces propagating from the rail side, the joining strength between the sleeper body and the interposition member is hardly reduced, and the rail can be firmly supported.

  The invention according to claim 5 is the sleeper according to any one of claims 1 to 4, wherein the interposition member forms a fitting structure portion across the short direction of the connecting means.

  In the sleeper of the present invention, since the interposed member straddles the short direction of the connecting means, the bonding strength between the sleeper main body and the interposed member is hardly lowered over a long period after laying. Therefore, according to this invention, the sleeper which can support a rail firmly over a long period after laying can be provided.

  The invention according to claim 6 is characterized in that the interposition member is obtained by impregnating a curable resin into a mixture containing one or both of the short fiber component and the wear-resistant tip and curing the mixture. A sleeper tree according to any one of claims 1 to 5.

  The sleeper of the present invention impregnates a mixture containing one or both of a short fiber component and a wear-resistant tip into an interposition member that is in contact with a rail or an installation surface and is assumed to be worn. A hardened material with excellent strength and wear resistance is used. Therefore, the sleeper of the present invention can support the rail firmly, with little wear of the interposition member.

  In the sleeper according to claim 6, it is desirable that the wear-resistant tip includes at least one of synthetic rubber, ceramics, and metal. (Claim 7)

  According to such a configuration, the wear resistance of the interposition member can be further improved, and the sleeper replacement frequency and maintenance cost can be minimized.

  In the sleeper according to claim 6 or 7, it is desirable that the short fiber component is added in a state where the fiber-reinforced resin molded product is pulverized or powdered. (Claim 8)

  According to this configuration, the strength and wear resistance of the interposition member can be further improved, and the sleeper replacement frequency and the cost required for maintenance can be minimized.

  Moreover, the sleeper of the present invention is formed by adding a resin molded product in which the interposition member is reinforced with fiber as a pulverized product or powder. Therefore, according to the present invention, it is possible to effectively use, for example, pulverized fiber-reinforced pillows that were conventionally discarded by replacement, or powder generated during processing of fiber-reinforced pillows.

  The invention according to claim 9 is the sleeper according to any one of claims 1 to 8, wherein an elastic material is interposed between the sleeper main body and the interposition member.

  According to such a configuration, most of the vibration propagating from the rail side can be absorbed, the propagation of vibration to the sleeper main body can be suppressed to the minimum, and the joining strength of the interposition member to the sleeper main body can be maintained for a long time.

  The invention according to claim 10 is characterized in that a damping material for suppressing propagation of vibration to the sleeper body side is interposed between the sleeper body and the interposition member. It is a sleeper tree described in 1.

  According to such a configuration, it is possible to minimize the propagation of vibration from the rail side to the sleeper body side, and it is possible to maintain the joint strength of the interposition member with respect to the sleeper body over a long period of time.

  The invention according to claim 11 is the sleeper according to any one of claims 1 to 10, wherein the material of the interposition member is different from that of the sleeper main body.

  The sleeper of the present invention has different natural frequencies because the materials of the interposition member and the sleeper body are different. Therefore, the sleeper of the present invention can suppress the propagation of the vibration propagating to the interposition member to the sleeper main body side to the minimum, and can maintain the bonding strength of the interposition member to the sleeper main body for a long period of time.

  In the sleeper according to any one of claims 1 to 11, the interposition member is a short sleeper disposed between the rail and the sleeper body, and the rail mounting surface on which the rail is mounted is provided with one rail. It may be characterized in that a rail storage part capable of storing a part or all of the part is provided. (Claim 12)

  In the sleeper according to claim 12, the rail storage portion has an inclined portion inclined with respect to the extending direction of the rail, the inclined portion is arranged at a position along the rail, and fixes the rail to the interposition member. It may be in contact with the fixed member. (Claim 13)

  According to this configuration, the rail can be moved within the rail housing portion by moving the fixing member along the inclined portion. Therefore, according to the present invention, the laying position of the rail can be easily adjusted.

  The invention according to claim 14 is the sleeper according to any one of claims 1 to 13, wherein the interposition member has a plug means capable of mounting a fastening member for fastening the rail or the tie plate. .

  According to such a configuration, the rail and the tie plate can be easily fixed to the sleeper at the construction site of the sleeper and the rail. Therefore, according to the present invention, it is possible to provide a sleeper that can efficiently perform a rail laying operation.

Here, some protrusions such as rivets, bolts, and nuts may be exposed on the installation surface such as the road bed and the bridge girder located on the bottom side of the sleeper at the laying site. In addition, the sleeper main body to which the interposition member is attached is equipped with bolts, nuts and the like for laying rails, which may protrude and come into contact with the interposition member. When a sleeper is laid in such a state, the projecting object and the interposition member come into contact with each other, and when a load is applied to the sleeper through a train or the like, a large load is applied locally to the contact part. Depending on the situation, it may lead to damage to sleeper trees. Therefore, it is desirable that the sleeper has a structure in which the protruding object does not come into contact with an installation surface such as a roadbed or a bridge girder, or a contact portion between another member such as a sleeper main body and the interposition member.

  Therefore, the invention according to claim 15 provided based on such knowledge, the interposition member is in contact with the other member having one or more surfaces and having a protruding portion protruding from the surface, The sleeper according to any one of claims 1 to 14, wherein the contact surface includes a recess capable of accommodating the protrusion.

  According to such a configuration, even if a large load is applied to the sleeper as the train passes, a sleeper can be provided in which a large stress does not act locally on the contact surface of the interposition member, and damage due to this does not occur.

  The invention according to claim 16 is the sleeper according to any one of claims 1 to 15, wherein the interposition member is mounted at a position for supporting a load acting from the rail side.

  The sleeper is most easily worn at the position where the load acting from the rail side is supported. In the sleeper of the present invention, since the interposition member is mounted at a position that supports the load acting from the rail side where the degree of wear is assumed to be high, the sleeper main body is less likely to be worn. Therefore, according to the present invention, it is possible to provide a sleeper that does not wear or deteriorate due to a load acting from the rail side for a long time after laying.

  The invention according to claim 17 is the sleeper according to any one of claims 1 to 16, wherein the interposition member has higher wear resistance than the sleeper main body.

  As described above, the sleeper of the present invention is laid in a state where the interposition member is interposed between the installation surface or rail and the sleeper main body. Therefore, in the sleeper of the present invention, the interposition member is the part that receives the most frictional force. In consideration of such circumstances, the sleeper of the present invention is such that the interposition member is more excellent in wear resistance than the sleeper main body. Therefore, the sleeper of the present invention is not easily worn or damaged even when used for a long time.

  The invention according to claim 18 is the sleeper according to any one of claims 1 to 17, wherein the interposition member has higher compressive strength than the sleeper main body.

  According to this configuration, it is possible to provide a sleeper that can be firmly supported even when a large load is applied.

  The invention according to claim 19 is the sleeper according to any one of claims 1 to 18, wherein the sleeper body has higher tensile strength than the interposed member.

  According to such a configuration, it is possible to provide a sleeper that can firmly support a load acting from the rail side even when it is laid in a place where a large external force acts due to the passage of a train or the like.

  The sleeper according to any one of claims 1 to 19, wherein the sleeper main body is preferably a resin foam reinforced by long fibers aligned in a longitudinal direction. (Claim 20)

  According to the present invention, it is possible to provide a sleeper tree that is excellent in wear resistance and can effectively use resources.

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a sleeper 1 according to a first embodiment of the present invention. The sleeper 1 is used for laying the rail R on the bridge girder B (installation surface). That is, the sleeper 1 is installed so as to be interposed between the bridge girder B and the rail R. The sleeper 1 includes a main body 2 and two packings 3 (intervening members) fixed to both ends in the longitudinal direction.

  The main body 2 is formed by molding a resin reinforced with long fibers into a substantially rectangular parallelepiped shape. More specifically, the main body 2 is formed of a resin reinforced with long fibers embedded in the longitudinal direction, that is, synthetic wood, and more preferably embedded with glass long fibers aligned in the longitudinal direction. It is formed from the synthetic wood and other thermosetting resin foams, and has a higher tensile strength than the packing 3 described later. Here, synthetic wood is a resin reinforced with embedded long fibers. The synthetic wood used for the main body 2 is a thermosetting resin foamed body in which long glass fibers are aligned and embedded in the longitudinal direction. For example, “Slon Neo Lumber FFU” manufactured by Sekisui Chemical Co., Ltd. Can be suitably used. The main body 2 includes about 10 to 20% of glass long fibers by volume ratio. Therefore, the main body 2 does not corrode even when placed in a harsh environment exposed to wind and rain, and exhibits sufficient tensile strength.

  The main body 2 is provided with four fixing holes 7 penetrating from the top surface 5 side to the bottom surface 6 side at both ends in the longitudinal direction. The fixing hole 7 is for inserting a screw nail, a bolt or the like for fixing the tie plate P used for mounting the rail R. As shown in FIGS. 1A and 1C, rails R are fixed using tie plates P and fasteners F at both ends in the longitudinal direction on the top surface 5 side of the main body 2.

  The packing 3 has a substantially rectangular parallelepiped outer shape as shown in FIG. 1A, and is bonded and fixed to the bottom surface 6 side at both ends in the longitudinal direction of the main body 2. Here, the adhesive used for fixing the main body 2 and the packing 3 is not particularly limited as long as these bonding surfaces can be bonded, and the main body 2, the packing 3, and the like are not limited. It can select suitably according to the material of. The sleeper 1 of the present embodiment can suitably use an adhesive composed of, for example, an epoxy resin because the main body 2 is made of synthetic wood.

  The packing 3 is a molded product obtained by molding a resin material into a predetermined shape. As shown in FIG. 1B, the packing 3 includes a short fiber component 10 and a wear-resistant tip 11 crushed into various shapes, and is cured with a curable resin. The short fiber component 10 is added in the state of, for example, abrasive powder, cutting powder, cutting powder, or the like generated when the main body 2 is manufactured. The wear-resistant tip 11 is obtained by pulverizing a material such as synthetic rubber, metal, or ceramics. The packing 3 has higher compressive strength than the main body 2 and is excellent in wear resistance.

  More specifically, it is desirable that the short fiber component 10 contained in the packing 3 is contained in a volume ratio of about 5 to 50%, more preferably in a range of about 10 to 20%. Even more preferred. The abrasive powder, cutting powder, and cutting powder added as the short fiber component 10 preferably have a size of about 0.1 mm square to 5 mm square, and a size of about 1 mm square to 3 mm square. It is desirable. The wear-resistant tip 11 is desirably contained in a volume ratio of about 5 to 50%, and more preferably in a range of about 10 to 20%. The wear-resistant tip 11 preferably has an average particle size of about 3 mm to 20 mm, and preferably about 10 mm.

As shown in FIG. 1C, the packing 3 is on the bottom surface 6 side of the main body 2 and is located between the surface of the bridge girder B and the main body 2 when the sleeper 1 is fixed to the bridge girder B. It is fixed. Therefore, as for the main-body part 2, the surface of the bridge girder B and the bottom face 6 of the main-body part 2 do not contact directly, and friction does not arise among these. Further, the packing 3 is fixed at a position directly below or slightly below the mounting position of the rail R. In other words, the packing 3 is installed at a position capable of supporting a load acting from the rail R side.

  The ratio of the thickness of the main body 2 and the packing 3 can be appropriately adjusted according to the laying conditions of the sleeper 1 and the like, but is preferably adjusted to about 10: 1 to 1: 1, and about 4: 1 to It is even more desirable that the ratio be about 3: 1.

  As described above, the sleeper 1 is configured such that the packing 3 is interposed between the main body 2 and the bridge girder B which is the installation surface. Further, the packing 3 is disposed at a position that supports a load acting from the rail R side laid on the sleeper 1. Therefore, even if the sleeper 1 is laid for a long time, the wear of the main body 2 hardly occurs. Further, the sleeper 1 can be reused as it is even when the main body 2 constituting the majority hardly wears and the packing 3 is worn and needs to be replaced.

  Since the packing 3 employed in the embodiment includes the short fiber component 10 and the wear-resistant tip 11, the compression strength is high and the wear resistance is excellent. Therefore, the sleeper 1 can firmly support a large load from the rail R side and wear of the packing 3 hardly occurs.

The packing 3 is manufactured by reusing waste materials generated during processing or molding of synthetic wood (FFU) and other fiber reinforced plastics (Fiber Reinforced Plastics, hereinafter simply referred to as FRP) constituting the main body 2. it can. In addition, the waste material can be reused for the wear-resistant tip composed of synthetic rubber, metal, ceramics, etc. contained in the packing 3. Therefore, the sleeper 1 of the present embodiment can be manufactured by effectively using resources.

  Since the main body 2 employed in the above embodiment is formed by molding synthetic wood in which long glass fibers are aligned and embedded in the longitudinal direction, the tensile strength is high. Therefore, the sleeper 1 can firmly support a load acting from a train or the like passing on the rail R.

  The sleeper 1 was installed on the bridge girder B, but can also be used as, for example, a parallel sleeper laid on the ballast roadbed, a branch sleeper, or the like.

  Next, a sleeper according to a second embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 2, 20 is a sleeper of this embodiment. The sleeper tree 20 has the same configuration as that of the sleeper tree 1 of the above-described embodiment. Therefore, common parts are denoted by the same reference numerals, and detailed description thereof is omitted.

  The sleeper tree 20 is used for laying the rail R on the bridge beam B in the same manner as the sleeper tree 1. The sleeper 20 has two rails R attached to both ends in the longitudinal direction of the long main body 2 by a tie plate P and a fastener F, and supports a load acting from the rail R side. The sleeper 20 is different from the sleeper 1 in the shape of the packing 21 fixed to the bottom surface 6 side of the main body 2. Hereinafter, the packing 21 which is a structure peculiar to the sleeper 20 will be described in more detail.

  The packing 21 is a block-like member having a substantially rectangular parallelepiped outer shape as shown in FIGS. The packing 21 is a molded product obtained by molding a resin material into a predetermined shape, similar to the packing 3 employed in the sleeper 1. More specifically, the packing 21 includes the short fiber component 10 and the wear-resistant tip 11 crushed into various shapes, and is cured by a curable resin. The packing 21 has higher compressive strength than the main body 2 and is excellent in wear resistance.

  The packing 21 has a configuration in which the top surface 22 side is flat and two grooves 25, 25 are provided in parallel on the bottom surface 23 side. The packing 21 is fixed in a state where the grooves 25 and 25 are opened downward by bonding the top surface 22 to the bottom surface 6 of the main body 2. The grooves 25 and 25 are mounted on the bridge beam B and function as reliefs for the heads of the rivets 26 protruding from the surface. For this reason, the sleeper tree 20 does not rattle even when it is laid on a portion where the installation surface is uneven by the rivets 26 or the like.

  Further, even if there are irregularities due to the rivets 26 or the like on the surface of the bridge girder B which is the installation surface, this is stored in the groove 25 and does not directly contact the packing 21. Therefore, even if the sleeper 20 of the present embodiment receives a large load from the rail R side laid on the main body 2, the stress associated therewith is not concentrated locally and is supported in a distributed manner, and the packing 21 is not damaged. Absent.

  The sleepers 1 and 20 of the above-described embodiment are the ones in which the packings 3 and 21 are bonded and fixed to the bottom surface 6 side of the main body 2. However, the present invention is not limited to this. 3, a protrusion 13 is provided on the top surface side of the packing 3, and a concave portion 15 in which the protrusion 13 can be fitted is provided on the bottom surface 6 side of the main body portion 2, and these are bonded in a fitted state. It is good also as a structure of these. According to such a configuration, the joined state of the main body 2 and the packings 3 and 21 can be made stronger.

  Next, a third embodiment of the present invention will be described in detail with reference to the drawings. FIG. 4 is a perspective view showing the sleeper 30 of the present embodiment. As shown in FIG. 4, the sleeper 30 is obtained by fixing short sleepers 32 and 32 (intervening members) to both ends in the longitudinal direction of a long main body 31. In other words, the sleeper tree 30 has a configuration in which two short sleeper trees 32, 32 are connected by the long main body 31. The sleeper 30 is used with a short sleeper 32 (intervening member) interposed between the main body 31 and the rail R. Like the main body 2 used in the above embodiment, the main body 31 is formed by molding synthetic wood reinforced with long glass fibers aligned in the longitudinal direction into a substantially rectangular parallelepiped shape, and has a tensile strength. high.

  The main body 31 is provided with fitting recesses 35 that are recessed from the top surface 33 side toward the bottom surface 34 side at positions corresponding to both ends in the longitudinal direction. The fitting recess 35 is for fitting the short sleeper 32 and has a rectangular opening substantially congruent with the outer shape of the short sleeper 32. The depth d of the fitting recess 35 is such that the portion on the bottom surface 34 side of the short sleeper 32 fits. More specifically, the depth d of the fitting recess 35 is preferably about ¼ to ½ of the thickness t of the short sleeper 32. In the present embodiment, the depth d of the fitting recess 35 is about ３ of the thickness t of the short sleeper 32.

  The short sleeper 32 includes the short fiber component 10 and the wear-resistant chip 11 as in the packings 3 and 21 of the above embodiment, and is formed by molding a resin material cured with a curable resin into a block shape. The short fiber component 10 contained in the short sleeper 32 is added in the state of cutting powder such as synthetic wood (FFU) constituting the main body 31 or in the state of abrasive powder. More specifically, the short fiber component 10 is preferably obtained by pulverizing synthetic wood or the like to a size of about 0.1 mm square to 5 mm square, and pulverizing to a size of about 1 mm square to 5 mm square. It is desirable that Moreover, it is desirable that the short fiber component 10 contained in the short sleeper 32 is contained by about 5 to 50% by volume, and more preferably in the range of about 10 to 20%.

The wear resistant chip 11 contained in the short sleeper 32 is added in a state in which a material such as synthetic rubber, metal, or ceramic is pulverized. The wear-resistant tip 11 is preferably crushed to an average particle size of about 3 mm to 20 mm, and more preferably about 10 mm. Moreover, it is desirable that the short sleeper 32 contains about 5 to 50% of the wear-resistant tip 11 by volume, and it is even more preferable to be within a range of about 10 to 20%.

  As shown in FIGS. 4 and 5, the short sleeper 32 has a rail storage portion 40 that is recessed from the top surface 37 side toward the bottom surface 38 side. The rail housing portion 40 is a groove that penetrates between the side surfaces 41 and 43, and has inclined surfaces 47 and 48 that are inclined at a predetermined angle with respect to the side surfaces 45 and 46 adjacent to the side surfaces 41 and 43. Further, long holes 50 and 51 penetrating toward the bottom surface 38 are provided in the rail housing portion 40 at positions along the inclined surfaces 47 and 48. A screw shaft 52 for fixing a fastener 53 (described later) is inserted into the long holes 50 and 51 from the bottom surface 38 side so as to be slidable along the long holes 50 and 51.

  As shown in FIGS. 5 and 6, fasteners 53, 53 are attached to the screw shafts 52, 52 protruding upward from the long holes 50, 51. The fastener 53 is a substantially trapezoidal wedge-shaped member when viewed from the surface 54 side. The fastener 53 penetrates from the front surface 54 side toward the back surface 58 side, and has a through hole 55 through which the screw shaft 52 is inserted. Further, the fastener 53 is formed with a stepped portion 60 at a position on the back surface 58 side and on the side surface 56 side. The step portion 60 has a shape along the bottom portion 57 when the fastener 53 is mounted so as to be covered from above the bottom portion 57 of the rail R.

  The fastener 53 is provided with a contact surface 61 that faces the side surface 56 and is inclined with respect to the side surface 56. As shown in FIG. 8, the inclination angle of the contact surface 61 with respect to the side surface 56 is substantially the same as the inclination angles of the inclined surfaces 47 and 48 of the rail housing portion 40 with respect to the side surfaces 45 and 46 of the short sleeper 32. Therefore, when the fastener 53 is slid so that the contact surface 61 is along the inclined surfaces 47 and 48 of the rail housing portion 40, the side surface 56 of the fastener 53, that is, the inclined surfaces 48 and 47 where the step portion 60 is opposed. Proximity or separation. Therefore, the fasteners 53 and 53 are inserted into both sides of the rail R in a state where the rail R is stored in the substantially central portion of the rail storage portion 40, and the fasteners 53 and 53 are indicated by arrows in FIG. 8B. When the rail R is slid in the extending direction of the rail R, the fastener 53 is pushed and moved in the direction intersecting the extending direction of the rail R (left and right direction in FIG. 8B), and the laying position is finely adjusted.

  More specifically, for example, when the fastener 53 (53a) on the left side of the rail R in FIG. 8B is pushed and moved as indicated by an arrow A, the fastener 53a moves along the inclined surface 47, The rail R moves in the direction of arrow a. When the rail R moves to a desired position, another fastener 53 (53b) comes into contact with the bottom 57 of the rail R in the space on the left side of the rail R, and the contact surface 61 comes into contact with the inclined surface 48. Insert until tight. The rail R is in a state in which movement in the direction intersecting the rail R is blocked by the fasteners 53a and 53b. In this state, when the nut 62 is attached to the screw shaft 52 inserted through the through hole 55 of the fastener 53, the bottom portion 57 of the rail R is tightened, and the sleeper 30 is fixed to the rail R. On the other hand, when the rail R is to be moved to the left, the fastener 53b is inserted as shown by an arrow B in FIG. 8B with the fastener 53a removed. The rail R is pushed and moved by the fastener 53b and moves to the left as indicated by an arrow b. Thereafter, when the fastener 53a is firmly inserted as indicated by an arrow A, the rail R is sandwiched and fixed by the fasteners 53a and 53b.

  As described above, the sleeper 30 of the present embodiment is not directly in contact with the rail R because the main body 31 that connects the two short sleepers 32, so that a train or the like passes on the rail R and vibration is generated. Even so, the main body 31 is not worn. Therefore, the sleeper 30 can be reused as it is, even if the short sleeper 32 has to be replaced due to wear or damage.

In addition, since the sleeper 30 is formed by fitting and fixing the short sleeper 32 in the fitting recess 35 of the main body 31, the joined state of the main body 31 and the short sleeper 32 is maintained even when used for a long time. The

  In the sleeper 30 of this embodiment, the short sleeper 32 is a substantially rectangular parallelepiped block, but the present invention is not limited to this. For example, a short sleeper 32a shown in FIG. Alternatively, the shape may be widened from the top surface 37 side toward the bottom surface 34 side. Moreover, although the above-mentioned short sleeper 32 was provided with the rail accommodating part 40 which can accommodate the rail R in the top | upper surface 37 side, this invention is not limited to this, For example, FIG.9 (b) It is good also as a substantially rectangular parallelepiped block body like the short sleeper 32b shown in FIG.

  In the sleeper 30 described above, the side surfaces 41, 43, 45, and 46 are all flat instead of the short sleeper 32, but the side surfaces 41, 43, and 45 as shown in FIGS. , 46 may be configured to employ short sleepers 32c to 32h in which grooves 65 or recesses 64 are provided in a part or all of them. Moreover, the sleeper tree 30 is replaced with the short sleeper tree 32, and the short sleeper trees 32i to 32n are provided with protrusions 66 and 67 on part or all of the side surfaces 41, 43, 45, and 46 as shown in FIGS. It is good also as a structure which employ | adopted.

  As described above, when the short sleepers 32c to 32h having the grooves 65, the concave portions 64, and the protrusions 66 and 67 provided on the side surfaces 41, 43, 45, and 46 are employed, as shown in FIGS. It is desirable that the projections 67 and the recesses 64 are provided in the joint recesses 35 at positions corresponding to the grooves 65, the recesses 64, and the projections 66 and 67. In this case, when the short sleepers 32c to 32e are pushed in as shown by arrows in FIG. 11 (a) and FIG. 12 (a), the grooves 65 and the recesses 68 and the projections 66 and 67 are fitted, and the short sleepers 32c to 32e are formed. The main body 31 is firmly fixed.

  In addition, as shown in FIGS. 14 to 16, the sleeper 30 described above can interpose an elastic material 69 and a damping material 68 having a damping action between the main body 31 and the short sleeper 32. . More specifically, the elastic material 69 and the vibration damping material 68 are a sheet-like material sandwiched between the bottom surface 38 of the short sleeper 32 and the fitting recess 35 as shown in FIG. 14, or fitted as shown in FIG. What covers the whole wall surface which comprises the recessed part 35, and surrounds the lower part of the short sleeper 32 is employable. Further, as shown in FIG. 16, a sheet-like elastic material 69 and damping material 68 having a larger area than the bottom surface 38 of the short sleeper 32 are pushed into the fitting recess 35 together with the short sleeper 32, and the bottom surface 38 of the short sleeper 32, It is good also as a structure interposed between the side surfaces 41 and 43 and the side surfaces 45 and 46. Alternatively, an adhesive or a liquid resin may be poured into the gap between the short sleeper 32 and the fitting recess 35, or between the elastic member 69 or the damping material 68 and the short sleeper 32 and the fitting recess 35, and cured. According to this configuration, it is possible to minimize the propagation of vibration from the rail R side to the main body 31 side.

  Subsequently, a sleeper according to a fourth embodiment of the present invention will be described. FIG. 17 is an exploded perspective view showing the sleeper tree 70 of the present embodiment. The sleeper tree 70 is obtained by mounting short sleeper trees 72 (intervening members) at both ends of a long main body 71. In other words, the sleeper tree 70 has a configuration in which two short sleeper trees 72 are connected by the main body 71.

  Similar to the main body 2 and the like of the sleeper 1 described above, the main body 71 is formed by molding synthetic wood reinforced with long glass fibers aligned in the longitudinal direction into a substantially rectangular parallelepiped shape, and has high tensile strength. On both ends in the longitudinal direction of the main body 71, fitting recesses 73 that are recessed from the top surface 75 side toward the bottom surface 76 side are provided. The fitting recess 73 projects through the long side surfaces 77 and 78 extending in the longitudinal direction of the main body 71. The fitting recess 73 has short side surfaces 82 and 83 that are substantially parallel to the end surfaces 80 and 81 at both ends in the longitudinal direction of the main body 71. The fitting recess 73 is provided with six through holes 85 for penetrating bolts for passing through the main body 71 in the thickness direction and fixing the short sleeper 72 to the main body 71.

  The short sleeper 72 includes the short fiber component 10 and the wear-resistant chip 11 in the same manner as the short sleeper 32 described above, and is formed by molding a resin material cured with a curable resin into a block shape. Conditions such as the material, composition ratio, and size of the short fiber component 10 and the wear-resistant tip 11 contained in the short sleeper tree 72 are preferably substantially the same as those of the short sleeper tree 32.

  The short sleeper 72 is a block-like member that is shorter than the main body 71 and is mounted so as to straddle the width direction of the main body 71. As shown in FIG. 17, the short sleeper 72 has an overall width W <b> 1 larger than the width W <b> 2 (length in the short direction) of the main body 71, but the top surface 87 is substantially the same as the width of the main body 71. The chamfered portion 88 is formed. The chamfered portion 88 is at a portion where the rail R is laid as shown in FIG. 17C and protrudes in the width direction of the main body 71 when observed from the rail R side. Therefore, most of the load acting on the short sleeper 72 side from the rail R side acts in the thickness direction of the main body 71 (up and down direction in FIG. 17), and the installation stability of the sleeper 70 is ensured.

  The top surface 87 of the short sleeper 72 is provided with four countersink holes 91 for mounting a plug 90 described later. Also, six mounting holes 93 are provided on the bottom surface 92 of the short sleeper 72 as shown in FIG. The mounting hole 93 is provided at a position corresponding to the through hole 85 of the main body 71 described above, and is used to screw a bolt inserted from the bottom surface 76 side of the main body 71 into the through hole 85.

  The short sleeper 72 has leg portions 95 and 95 extending from the chamfered portion 88 and extending substantially perpendicular to the top surface 87 and the bottom surface 92. The distance d1 (the length of the leg portion 95) from the bottom surface 92 of the short sleeper 72 to the tip of the leg portion 95 is the depth d2 (the height of the short side surfaces 82, 83) of the fitting recess 73 provided in the main body portion 71. Is longer than Further, the width of the portion sandwiched between the leg portions 95 and 95 is substantially the same as the width W2 of the main body 71 described above, and forms a fitting recess 73. Therefore, when the fitting structure is formed by the fitting concave portion 73 of the main body 71 and the fitting concave portion 73 of the short sleeper 72, the leg portion 95 of the short sleeper 72 becomes the main portion as shown by the oblique lines in FIG. The long side surfaces 77 and 78 of the main body 71 are in surface contact with each other and part of the end surfaces 96 and 97 of the short sleeper 72 are in surface contact with the short side surfaces 82 and 83 of the main body 71. For this reason, the short sleeper 72 is prevented from moving in the longitudinal direction and the short direction of the main body 71 by the fitting structure formed between the main sleeper 71 and the main sleeper 71.

  The plug 90 attached to the short sleeper 72 is formed using a material such as FRP (fiber reinforced plastic), nylon, metal, or ceramic. As the embedding plug 90, for example, a plug having a shape as shown in FIGS. More specifically, the embedding member 90 a is provided with a ridge 101 at the upper end portion of the bottomed cylindrical embedding main body 100 and used for fixing the tie plate P to the inner peripheral surface of the embedding main body 100. A screw 102 for locking the bolt is engraved. On the outer peripheral surface of the embedding main body 100, a protrusion 103 is provided on the entire surface to increase the resistance force against the pulling force acting on the embedding member 90a.

  Moreover, the plug member 90b shown in FIG. 18 (b) has a cylindrical shape, and includes a plug main body 106 having a flange 105 at its upper end and a bolt 107 that is locked to the plug main body 106. A tie plate P fixing bolt and a screw 108 for locking the bolt 107 are engraved on the inner peripheral wall of the embedding main body 106. The bolt 107 is provided with a through hole 109 penetrating in the axial direction. This is for discharging rainwater or the like that has entered the interior of the plug body 106 to the outside. When the embedding member 90b is employed, the counterbore 91 is passed through to the bottom surface 92 side of the short sleeper 72, and the bolt 107 is inserted from the bottom surface 92 side into the embedding body 106 inserted from the top surface 87 side. The plug member 90b can be mounted by mounting.

A plug member 90c shown in FIG. 18 (c) is formed by engraving a screw 111 for locking a fastening member inside a prismatic plug-shaped plug body 110. A groove-like recess 112 for increasing the resistance to force is provided across the entire surface in the lateral direction.

  A plug member 90d shown in FIG. 18 (d) is formed by engraving a screw 116 for locking a fastening member inside a prismatic plug main body 115, and a corner portion on the outer surface of the plug main body 115. A recess 117 is formed to increase the resistance against the pulling force. Further, the plug member 90e shown in FIG. 18 (e) has a bottomed cylindrical plug main body 120 provided with a square-shaped ridge 121 and a screw 122 engraved inside the plug main body. It is.

  The sleeper tree 70 is used by laying rails R on a tie plate P fixed by attaching bolts to a plug 90 embedded on the top surface 87 side of the short sleeper tree 72 as shown in FIG. 17 (c). The The sleeper 70 is in a state in which the short sleeper 72 is interposed between the main body 71 and the rail R. Therefore, even if a train or the like passes on the rail R, the main body 71 does not wear.

  As described above, the sleeper 70 has the short sleeper 72 straddling the width direction of the main body 71, and the leg portions 95, 95 extending downward from both ends in the width direction of the short sleeper 72 are the longitudinal side surfaces of the main body 71. 77 and 78 are in surface contact and sandwiched. Further, the end surfaces 96 and 97 of the short sleeper 72 form a fitting recess 73 of the main body 71 and are in surface contact with the short side surfaces 82 and 83 parallel to the end surfaces 80 and 81. Therefore, the sleeper tree 70 has a structure in which the main body 71 and the short sleeper tree 72 prevent the other positional deviation from each other. Therefore, even if the sleeper tree 70 is used over a long period of time, the main body 71 and the short sleeper tree 72 are not misaligned.

  Next, a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 19A is an exploded perspective view showing the sleeper according to the present embodiment, and FIG. 19B is a perspective view showing a state where the short sleeper employed in the sleeper of FIG. (C) is a perspective view showing the usage pattern of the sleeper of (a).

  In FIG. 19, reference numeral 130 denotes a sleeper according to this embodiment. The sleeper 130 has a structure in which short sleepers 132 and 132 are fixed to both ends of a long main body 131. The main body 131 is formed by molding synthetic wood reinforced with long glass fibers aligned in the longitudinal direction into a substantially rectangular parallelepiped shape, like the main body 2 of the sleeper 1 described above, and has high tensile strength. At both ends in the longitudinal direction of the main body 131, rectangular parallelepiped protrusions 135 protruding from the top surface 133 are provided. Further, around the protrusion 135, four bolt mounting holes 134 in which bolts for fixing the short sleeper 132 can be mounted are provided.

  The short sleeper 132 includes the short fiber component 10 and the wear-resistant chip 11 in the same manner as the short sleeper 32 described above, and is formed by molding a resin material cured with a curable resin into a block shape. The short sleeper 132 has substantially the same conditions as the short sleeper 32 in terms of the material, composition ratio, size, and the like of the short fiber component 10 and the wear-resistant tip 11. Therefore, the short sleeper 132 has high compressive strength like the short sleeper 32 and is excellent in wear resistance.

  In the short sleeper 132, as shown in FIG. 19, the bottom 136 and the main body 131 have the same width W3. The short sleeper 132 has a shape in which the bottom 136 side protrudes from the top surface 137, and a through hole 138 into which a bolt for fixing the short sleeper 132 is inserted is provided in the extended portion. On the bottom surface 136 of the short sleeper 132, a concave portion 140 having a shape that follows the outer shape of the protrusion 135 of the main body 131 is provided at a substantially central portion. Four counterbore holes 141 are provided on the top surface 137 side of the short sleeper 132, and the plug 90 is embedded.

As shown in FIG. 19C, the short sleeper 132 is fixed to the main body 131 by a bolt attached to the through hole 138, and the concave portion 140 opened to the bottom surface 136 side is provided with the main body 13.
1 is fitted to the protrusion 135 of the top surface 133 to form a fitting structure, and is firmly fixed to the main body 131.

  As shown in FIG. 19 (c), the sleeper 130 of this embodiment is mounted on the top surface 137 side of the short sleeper 132 by fastening the tie plate P to the plug 90, and the rail R is laid thereon. Is done. In the sleeper 130 according to the present embodiment, the main body 131 and the short sleeper 132 are integrated by forming the above-described fitting structure, so that vibration or the like propagates from the rail R laid on the short sleeper 132. Also, the friction between the main body 131 and the short sleeper 132 does not occur. Therefore, the sleeper tree 130 of this embodiment has very little wear on the main body 131 and the short sleeper 132, and can firmly support the rail R over a long period of time.

  As described above, in the sleeper tree 130 of the present embodiment, the protrusion 135 protruding from the top surface 133 side of the main body 131 and the recess 140 opened to the bottom surface 136 side of the short sleeper 132 form a fitting structure. It is integrated. Furthermore, since the recessed part 140 is a shape along the external shape of the protrusion 135, there is almost no clearance between them. Therefore, even if the sleeper 130 is affected by vibration from the rail R side, the joined state of the main body 131 and the short sleeper 132 is maintained, and the rail R can be firmly supported.

  The main body portions 2, 31, 71, 131 employed in the sleepers 1, 20, 30, 70, 130 shown in the first to fifth embodiments are all formed of a single synthetic wood into a predetermined shape. However, the present invention is not limited to this. For example, a plurality of synthetic wood plates may be laminated. Further, the packings 3, 21 and the short sleepers 32, 72, 132 employed in the respective embodiments described above all include the short fiber component 10 and the wear-resistant tip 11, but the present invention is not limited thereto. The short fiber component 10 and the wear-resistant tip 11 are not included, or are made of synthetic wood in the same manner as the main body portions 2, 31, 71, 131. Also good.

(A) is a disassembled perspective view which shows the sleeper of 1st Embodiment of this invention, (b) is sectional drawing of the packing employ | adopted for the sleeper shown to (a), (c) is the same ( It is a front view which shows the laying state of the pillow shown to a). (A) is an exploded perspective view showing a sleeper according to a second embodiment of the present invention, (b) is a perspective view showing a packing employed in the sleeper shown in (a), and (c) is the same. It is a front view which shows the laying state of the sleeper tree shown to (a). (A) is the perspective view which expanded the principal part of the modification of the sleeper shown in FIG. 1, The same (b) is AA sectional drawing of the same (a). (A) is a disassembled perspective view which shows the sleeper tree of 3rd Embodiment of this invention, The same (b) is a front view which shows the laying state of the sleeper tree shown to the same (a). (A) is a perspective view which shows the short sleeper employ | adopted as the sleeper shown in FIG. 4, (b) is the state which looked at the fastener with which the short sleeper shown to (a) is mounted | worn from the back side. It is a perspective view shown. It is the perspective view which expanded the principal part of FIG.4 (b). It is an A direction arrow directional view of FIG. (A) is a front view which shows the state which laid the rail on the sleeper shown in FIG. 4, (b) is the conceptual diagram which shows the laying method of the rail with respect to the sleeper shown in FIG. It is a perspective view which shows the modification of the short sleeper employ | adopted as the sleeper shown in FIG. It is a perspective view which shows another modification of the short sleeper employ | adopted as the sleeper shown in FIG. It is a perspective view which shows another modification of the short sleeper employ | adopted as the sleeper shown in FIG. It is a conceptual diagram which shows the state before and behind fitting the short sleeper shown in FIG. 10 in a main-body part. It is a conceptual diagram which shows the state before and behind fitting the short sleeper shown in FIG. 11 in a main-body part. (A) is sectional drawing which shows the decomposition | disassembly state of the sleeper tree which is a modification of FIG. 10, (b) is the perspective view of the same (a), (c) is a cross section which shows the sleeper shown in the same (a) FIG. (A) is sectional drawing which shows the decomposition | disassembly state of the sleeper tree which is another modification of FIG. 10, (b) is the perspective view of the same (a), (c) is the sleeper shown in the same (a). It is sectional drawing shown. (A) is sectional drawing which shows the decomposition | disassembly state of the sleeper tree which is another modification of FIG. 10, (b) is the perspective view of (a), (c) is the sleeper tree shown to (a). FIG. (A) is a disassembled perspective view which shows the sleeper of 4th Embodiment of this invention, (b) is a perspective view which shows the state which observed the short sleeper employ | adopted for the sleeper shown to the same (a) from the bottom face side. The figure, (c) is a front view showing the laying state of the sleeper shown in (a), and (d) is a view in the direction of arrow A in (a). (A) is a perspective view which shows the embedding employ | adopted in the sleeper shown in FIG. 17, (b)-(e) is a perspective view which shows the modification of the embedding shown to the same (a). . (A) is a disassembled perspective view which shows the sleeper of 5th Embodiment of this invention, (b) is a perspective view which shows the state which observed the short sleeper employ | adopted for the sleeper shown to (a) from the bottom face side. The figure, (c) is a front view showing the laying state of the sleeper shown in (a), and (d) is a view in the direction of arrow A in (a).

Explanation of symbols

1,20,30,70,130 Sleeper 2,31,71,131 Main body 3,21 Packing (intervening member)
10 Short fiber component 11 Wear-resistant tip 13 Protrusion 25 Groove 32, 72, 132 Short sleeper (intervening member)
35, 73 Fitting recess 40 Rail housing portion 47, 48 Inclined surface 53 Fastener 68 Damping material 69 Elastic material 77, 78 Long side surface 82, 83 Short side surface 90 Embedding 95 Leg portion 135 Protruding portion 140 Recessed portion

Claims (20)

  A sleeper having a long sleeper main body and disposed between a rail and an installation surface on which the rail is laid, wherein the sleeper main body is shorter than the sleeper main body and any of the installation surface and the rail A sleeper characterized in that one or a plurality of interposition members for preventing contact between the one or both and the sleeper main body are mounted.   A sleeper comprising a sleeper main body and an interposition member, the sleeper disposed between a rail and an installation surface on which the rail is laid, wherein the interposition member includes one or both of the installation surface and the rail, and the sleeper main body The sleeper body has a longitudinal surface extending in the longitudinal direction and a lateral surface extending in the lateral direction, and the mating structure is The sleeper is characterized in that the intermediate member is formed in surface contact with one or both of the long and short surfaces of the sleeper body.   A sleeper comprising a sleeper main body and an interposition member, the sleeper disposed between a rail and an installation surface on which the rail is laid, wherein the interposition member includes one or both of the installation surface and the rail, and the sleeper main body. The sleeper body has an opening that is open to either the top surface or the bottom surface, and is recessed in a shape along part or all of the top surface or bottom surface and side surface of the interposed member, A sleeper characterized in that an interposition member is fitted into the opening to form a sleeper body and a fitting structure.   A sleeper comprising a sleeper main body and an interposition member, the sleeper disposed between a rail and an installation surface on which the rail is laid, wherein the interposition member includes one or both of the installation surface and the rail, and the sleeper main body. The sleeper body has a protruding portion protruding from either the top surface or the bottom surface, and the interposed member has an opening recessed in a shape along the outer shape of the protruding portion on the top surface or the bottom surface. The sleeper is characterized in that the protrusion is fitted into the opening to form a fitting structure with the sleeper body.   The sleeper according to any one of claims 1 to 4, wherein the interposition member forms a fitting structure portion across the short direction of the connecting means.   6. The interposition member according to any one of claims 1 to 5, wherein a mixture containing either one or both of the short fiber component and the wear-resistant tip is impregnated with a curable resin and cured. Pillows described in crab.   The sleeper chip according to claim 6, wherein the wear-resistant tip includes at least one of synthetic rubber, ceramics, and metal.   The sleeper tree according to claim 6 or 7, wherein the short fiber component is added in a state where a fiber-reinforced resin molded product is pulverized or powdered.   The sleeper according to any one of claims 1 to 8, wherein an elastic material is interposed between the sleeper main body and the interposition member.   The sleeper according to any one of claims 1 to 9, wherein a vibration damping material that suppresses propagation of vibration to the sleeper body is interposed between the sleeper body and the interposition member.   The sleeper tree according to any one of claims 1 to 10, wherein the interposition member is made of a material different from that of the sleeper body.   The interposition member is a short sleeper arranged between the rail and the sleeper main body, and a rail storage portion capable of storing a part or all of the rail is provided on the rail mounting surface on which the rail is mounted. The sleeper tree according to any one of claims 1 to 11, wherein the sleeper tree is characterized by the following.   The rail storage portion has an inclined portion inclined with respect to the extending direction of the rail, and the inclined portion is disposed at a position along the rail and abuts on a fixing member for fixing the rail to the interposition member. The sleeper tree according to claim 12.   The sleeper tree according to any one of claims 1 to 13, wherein the interposition member has embedding means to which a fastening member for fastening the rail or the tie plate can be attached.   The interposition member includes one or a plurality of surfaces, a contact surface that comes into surface contact with another member having a protrusion protruding from the surface, and a recess that can store the protrusion on the contact surface. The sleeper tree according to any one of claims 1 to 14, characterized in that:   The sleeper according to any one of claims 1 to 15, wherein the interposition member is mounted at a position that supports a load acting from the rail side.   The sleeper according to any one of claims 1 to 16, wherein the interposition member has higher wear resistance than the sleeper main body.   The sleeper tree according to any one of claims 1 to 17, wherein the interposition member has higher compressive strength than the sleeper body.   The sleeper body according to any one of claims 1 to 18, wherein the sleeper body has higher tensile strength than the interposed member.   The sleeper body according to any one of claims 1 to 19, wherein the sleeper body is a resin foam reinforced by long fibers aligned in a longitudinal direction.

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