JP2008050912A - Sleeper for railway - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeper for a railway capable of obtaining sufficient strength while being reduced in manufacturing cost by decreasing the volume of a resin material. <P>SOLUTION: A sleeper body 11 is formed in a long-sized shape, and a horizontal plate-shaped cross beam 15 laid in a railway site 9 and a vertical surface-shaped vertical beam 16 vertically unified from the top face side along the longitudinal direction of the cross beam 15 are fitted, and a skeleton 14 is formed in the sleeper body 11. The skeleton 14 is formed of a material of a polyvinyl chloride resin as a thermoplastic resin material. The skeleton is formed in an approximately projecting sectional shape together with the vertical beam 16 fitted upward from an approximately central section 15b in the horizontal cross direction by forming flange surfaces 15a and 15a which are projected in a flange shape while directing the cross beam 15 in the horizontal cross direction, horizontally and approximately symmetrically. Molded form bodies 12 and 12 for a pedestal are fixed to top face sides of the flange surfaces 15a and 15a and both side faces 16a and 16a of the vertical beam 16 so as to be unified, respectively. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a railroad sleeper that is used for a railroad track on which ballast is laid and supports a rail laid upward.

  Conventionally, as shown in FIG. 26, a rectangular rod-shaped body made of long fiber reinforced foamed thermosetting resin containing glass fibers 2 ... as long fibers is formed into a solid shape so as to have a substantially rectangular cross section. The thing with which the sleeper main body 1 is comprised is known.

  In such a case, the sleeper bodies 1 are partially embedded in a large number of ballasts 3 laid in the railway track site, and the sleeper main bodies 1 are arranged in parallel at regular intervals.

  A pair of rail members 4 and 4 are laid above the sleeper main body 1 and fixed using a tie plate as a mounting bracket (not shown).

In addition, a plurality of long fiber reinforced foam curable resin plates are laminated, sandwiched from both sides with a reinforcing material, and fastened and fixed integrally with a fixing bolt member to form a sleeper having a substantially square cross section (See, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2003-34901 (paragraphs 0011 to 0022, FIG. 2)

  However, in such a conventional railroad sleeper, the sleeper main body 1 having a rectangular bar shape is solid, so that a large amount of a relatively expensive thermosetting resin material used as a material is required, and the raw material cost is increased. There has been a problem of increasing the number.

  Further, if the thickness of the sleeper main body 1 is set to be thin in order to reduce raw material costs, it may be difficult to secure the support rigidity of the rail members 4 and 4 laid on the upper side. It was.

  Then, this invention makes it the subject to provide the sleeper for railroads which can obtain sufficient intensity | strength and can reduce the quantity of resin material and can reduce manufacturing cost.

  In order to achieve the above object, the invention described in claim 1 has a long plate shape, a horizontal plate-like horizontal beam portion laid in a railway site, and along the longitudinal direction of the horizontal beam portion, A sleeper body composed of a skeleton part integrally forming a vertical beam-like vertical beam part provided vertically from the upper surface side of the transverse beam part, and a pedestal molded body fixed integrally to the sleeper body, The pedestal molding is characterized by a railroad sleeper provided with a rail fixing surface portion for fixing a rail laid above the sleeper body.

  Further, according to a second aspect of the present invention, there is provided a cross section along with the vertical beam portion provided upward from a substantially central portion in the left-right width direction by projecting the horizontal beam portion in a flange shape in the left-right width direction. The sleeper main body extending in the longitudinal direction so as to exhibit a substantially convex shape, and the pedestal molded body having a block shape along the left and right sides of the vertical beam portion, The railroad sleeper according to claim 1, which is fixed on the upper surface side.

  Further, according to a third aspect of the present invention, a pair of the vertical beam portions are provided in parallel from the both lateral edges of the horizontal beam portion toward the upper side, and the cross beam has a substantially concave shape and extends in the longitudinal direction. 2. The railway sleeper according to claim 1, further comprising: the sleeper main body, wherein the pedestal molded body is fixed between the pair of left and right vertical beams on the upper surface side of the horizontal beam. Yes.

  And what is described in Claim 4 is characterized by the railroad sleeper as described in any one of Claims 1 thru | or 3 in which the hollow part is formed along the longitudinal direction of the said sleeper main body. .

  Furthermore, what is described in claim 5 is characterized by the railroad sleeper according to any one of claims 1 to 4, wherein long fibers are embedded along the longitudinal direction of the sleeper body. .

  In addition, according to a sixth aspect of the present invention, in any one of the first to fifth aspects, the pedestal molded body is formed independently for each rail fixing surface portion in the longitudinal direction of the sleeper body. It is characterized by the railroad sleepers described in the above item.

  Furthermore, what is described in claim 7 is an integrated pedestal molded body in which the pedestal molded body is formed by connecting the pair of rail fixing surface portions arranged in the longitudinal direction of the sleeper main body. A railroad sleeper according to any one of claims 1 to 6 is characterized.

  And what is described in Claim 8 is characterized by the railroad sleeper as described in any one of Claims 1 thru | or 7 by which the hollow-shaped pipe member is embed | buried under the said molded object for bases. .

  Furthermore, what is described in claim 9 is any one of claims 1 to 8, wherein reinforcing concrete is placed around a connection portion between the horizontal beam portion and the vertical beam portion. It features the described railway sleepers.

  According to the first aspect of the present invention configured as described above, the skeleton portion of the sleeper main body is integrally formed of a horizontal plate-shaped horizontal beam portion and a vertical plane-shaped vertical beam portion erected on the upper surface side. It is formed and configured.

  For this reason, the load in the vertical direction applied from the rail member is transmitted to the horizontal beam portion and the vertical beam portion of the skeleton portion through the molded body for the pedestal on which the rail fixing surface portion is formed. It is received by the cross beam.

  The vertical beam portion can exhibit sufficient rigidity against a bending load applied in the vertical direction.

  Further, the horizontal beam portion disperses the vertical load over a relatively wide area and transmits it to the buried ballast or the ground, and also has good resistance to rolling in the extending direction of the rail member. can do.

  Furthermore, the molded body for a base on which the rail fixing surface portion is formed can also receive a compressive load in the vertical direction that cannot be supported only by the longitudinal beam portion.

  For this reason, by fixing the rail member and the tie plate for fastening the rail member to the rail fixing surface portion and giving a fastening force in a wide area, not only the vertical beam portion but also the horizontal beam portion, The load can be dispersed.

  Therefore, even if the dimension in the left-right width direction of the vertical beam portion is set to be smaller than the dimension in the left-right width direction of the horizontal beam portion, the conventional cross-section is substantially square while maintaining rigidity against vertical load. The amount of the resin material can be reduced as compared with the sleepers having an actual shape.

  For this reason, manufacturing cost can be reduced.

  Furthermore, since the skeleton of the sleeper body has the same cross-sectional shape in the longitudinal direction, continuous molding such as extrusion molding is possible.

  Further, the molded resin for the base can be made of a recycled resin material or the like as long as a certain compressive strength is obtained.

  Therefore, the manufacturing cost can be reduced also in these points.

  In addition, what is described in claim 2 presents a block shape along the left and right side surfaces of the longitudinal beam portion of the sleeper body extending in the longitudinal direction so as to exhibit a substantially convex shape in cross section. The molded body for base is fixedly provided on the upper surface side of the transverse beam portion.

  For this reason, the tie plate of the rail member fixed to the rail fixing surface portion of the molded body for pedestal has a large area and a fastening force without incurring a decrease in strength that occurs when attached to the vertical beam portion. For example, by providing the pedestal moldings on both sides of the vertical beam portion, a rail fixing surface portion having substantially the same width as the horizontal width direction of the horizontal beam portion can be obtained.

  And what is described in Claim 3 is provided with a pair of said vertical beam part toward upper direction from the both-sides width direction both edges of the said horizontal beam part.

  For this reason, since the skeleton member which has two vertical beam parts can be obtained in one sleeper main body, the rigidity with respect to the load of a perpendicular direction can be improved further.

  The pedestal molded body is fixed between the pair of vertical beam portions.

  For this reason, since the molded body for pedestal is fixed to the upper surface side of the transverse beam portion and the pair of inner side surfaces facing the vertical beam portion, a sufficient fixing force can be obtained and fixed integrally.

  Moreover, as for what was described in Claim 4, the hollow part is formed along the longitudinal direction of the said sleeper main body.

  For this reason, the amount of the resin material can be further reduced, and the manufacturing cost can be reduced.

  Further, according to the fifth aspect, long fibers are embedded along the longitudinal direction of the sleeper body.

  For this reason, the rigidity with respect to a vertical load can be further improved by forming in the shape which receives a vertical load effectively.

  According to a sixth aspect of the present invention, the molded body for pedestal is formed independently for each rail fixing surface portion in the longitudinal direction of the sleeper main body.

  For this reason, the amount of the resin material can be reduced, and the manufacturing cost can be reduced.

  Further, in the present invention, the integrated pedestal molded body is configured by connecting between the pair of rail fixing surface portions arranged in the longitudinal direction of the sleeper main body.

  For this reason, there is no possibility that the interval between the rail fixing surface portions may be shifted due to the mounting accuracy to the sleeper body. Therefore, dimensional accuracy can be improved.

  Further, by forming a concave portion for ballast interposition between a pair of rail fixing surface portions of the integrated pedestal molding, the sleeper body is moved in the longitudinal direction by the weight of the interpolated ballast. Can be difficult.

  According to the eighth aspect of the present invention, a hollow pipe member is embedded in the base molding.

  For this reason, the molded body for the pedestal can reduce the amount of the resin material as compared with the solid one, and the hollow portion is cooled after the thermoplastic resin as the resin material is molded by the mold. It can be used as an air hole.

  According to a ninth aspect of the present invention, there is provided a reinforcing concrete placed around the connecting portion between the horizontal beam portion and the vertical beam portion, and further, the horizontal beam portion and the vertical beam portion are connected to each other. The space is firmly connected, and the skeleton part can be integrated.

  For this reason, the vertical load received by the horizontal beam portion of the skeleton portion is effectively transmitted to the vertical beam portion via the pedestal molding, and the strength is effectively increased while suppressing an increase in weight. Can be improved.

  Next, a railroad sleeper according to the best mode for carrying out the present invention will be described with reference to the drawings.

  1 to 25 show a railroad sleeper according to an embodiment of the present invention.

  First, in terms of configuration, in this embodiment, as shown in FIG. 1, a plurality of synthetic sleepers 10... As railway sleepers are arranged in parallel in a railway track site 9.

  These synthetic sleepers 10 mainly include a sleeper body 11 which is partially embedded in a large number of ballasts (crushed stones) 3 laid in the track site 9 and provided at regular intervals, and the sleeper body. 11 includes a plurality of pedestal molded bodies 12 that are integrally fixed together.

  A pair of rail members 4 and 4 are laid above the sleeper main body 1, and the rail fixing surface portions 13 and 13 are formed on the upper surfaces of the base moldings 12 and 12. The rail members 4 and 4 are fixed to the rail fixing surface portions 13 and 13 by using a tie plate as a mounting bracket (not shown).

  The sleeper main body 11 has an elongated shape and is provided with a horizontal plate-like cross beam portion 15 laid in the railway site 9.

  In addition, vertical beam-like vertical beam portions 16 are provided along the longitudinal direction of the horizontal beam portion 15 so as to be integrated vertically from the upper surface side of the horizontal beam portion 15. A skeleton part 14 of the sleeper main body 11 is formed by the part 16.

  In the synthetic sleeper 10 of this embodiment, the skeleton part 14 is formed of a material made of polyvinyl chloride resin as a thermoplastic resin material, and as shown in FIG. The flange surface portions 15a and 15a projecting in a flange shape toward the left are formed symmetrically on the left and right so that the section along with the vertical beam portion 16 provided upward from the substantially central portion 15b in the left-right width direction is provided. It extends in the longitudinal direction so as to exhibit a substantially convex shape.

  Further, in the skeleton portion 14 of this embodiment, hollow portions 17 having a substantially rectangular cross section are formed along the longitudinal direction of the sleeper main body 11 over substantially the entire longitudinal direction of the sleeper main body 11.

  In this embodiment, the hollow portion 17 has four cross-sections in the transverse beam portion 15 and two in the longitudinal beam portion 16, and has a rectangular shape in the longitudinal direction, and the surface of the transverse beam portion 15 and the longitudinal beam portion 16. It is formed along the extending direction.

  And in the sleeper main body 11 which consists of the frame | skeleton part 14 formed integrally, the said molded bodies 12 and 12 for a base are each on the flange surface parts 15a and the upper surface side of the 15a, and the both side surface parts 16a and 16a of the vertical beam part 16, respectively. It is fixed so as to be integrated.

  As a material used for the molded bodies 12 and 12 for the pedestal of this embodiment, a material obtained by mixing and solidifying a foamed urethane as a recycled resin with a solid filler or a cutting waste of a resin such as urethane is used. By making the shape of one base molding 12 into a substantially trapezoidal shape in a side view so as to be divided into two portions and fixed in the longitudinal direction of the sleeper main body 11, the rail members 4, 4 It is formed with sufficient strength to suppress compressive deformation even by a vertical load when passing through the train.

  Furthermore, in this embodiment, the vertical position of the rail fixing surface portions 13 and 13 to which the rail members 4 and 4 laid above the sleeper main body 11 are fixed is the vertical beam portion of the skeleton portion 14. 16 is formed so as to be substantially flush with the upper end surface 16b.

  Moreover, in this embodiment, the rail members 4, 4 and the tie plate are fixed to the rail fixing surface portion 13 by driving a screw-like nail member. For this reason, the specific gravity of the molded body 12 for pedestals is set to 0.4 or more and 1.4 or less, and the nail member has a hardness that can be pierced and obtain a sufficient fixing force.

  Furthermore, in the longitudinal direction, a large number of ballasts (crushed stones) 3... Are provided on the upper surface side 15 c of the flange surface portion 15 a located between the pedestal molded bodies 12, 12 while being laid in the track site 9. It is configured to be loaded and loaded.

  Next, the effect of the synthetic sleeper 10 of this embodiment is demonstrated.

  In the railway sleeper of the embodiment configured as described above, the skeleton part 14 of the sleeper main body 11 includes a horizontal plate-like cross beam part 15 and a vertical plane-like vertical beam part 16 erected on the upper surface side. Are integrally formed.

  For this reason, the load in the vertical direction applied from the rail members 4, 4 is applied to the horizontal beam portion 15 and the vertical beam of the skeleton portion 14 through the pedestal molded bodies 12 formed with the rail fixing surface portions 13. It is transmitted to the part 16 and is received by both the longitudinal beam part 16 and the transverse beam part 15.

  Since the vertical beam portion 16 is provided vertically from the upper surface side of the horizontal beam portion 15, it can exhibit sufficient rigidity against a bending load applied in the vertical direction.

  Further, the lateral beam portion 15 distributes the load in the vertical direction over a relatively large area and transmits it to the embedded ballast 3 or the ground, and also has resistance to rolling in the extending direction of the rail members 4 and 4. Can be made good.

  Furthermore, the base molded body 12 on which the rail fixing surface portion 13 is formed can also receive a vertical compressive load that cannot be supported by the longitudinal beam portion 16 alone.

  For this reason, the vertical beam portion is obtained by fixing the rail members 4 and 4 and the tie plate for fastening the rail members 4 and 4 to the rail fixing surface portions 13 and 13 and applying a fastening force in a wide area. The load can be distributed not only to 16 but also to the lateral beam portion 15.

  Therefore, even if the dimension in the left-right width direction of the vertical beam portion 16 is set smaller than the dimension in the left-right width direction of the horizontal beam portion 15, the conventional cross-section is substantially square while maintaining rigidity against vertical load. The amount of the resin material can be reduced as compared with the sleepers having a solid shape.

  For this reason, manufacturing cost can be reduced.

  Furthermore, since the skeleton part 14 of the sleeper main body 11 exhibits the same cross-sectional shape in the longitudinal direction, continuous molding such as extrusion molding is possible.

  In addition, the resin moldings 12 and 12 may be made of a recycled resin material or the like as long as a certain compressive strength is obtained.

  Therefore, the manufacturing cost can be reduced also in these points.

  In addition, in the railroad sleeper of this embodiment, the moldings 12 and 12 for pedestals positioned on the left and right side surfaces of the longitudinal beam portion 16 are each rail fixing surface portion 13 in the longitudinal direction of the sleeper body 11. , 13 are formed independently.

  For this reason, the shape of the pedestal moldings 12 and 12 is made into a substantially trapezoidal shape in a side view located directly under the rail members 4 and 4 so that a vertical load can be effectively received with a small amount of resin material. Further, the rigidity against the vertical load can be further improved to suppress an increase in manufacturing cost.

  Moreover, in the pedestal molded bodies 12, 12 located on the left and right sides of the vertical beam portion 16, male screw-like nail members are screwed or driven into the rail fixing surface portions 13, 13. Thus, the rail member 4 is fixed.

  For this reason, a fastening force can be applied in a wide area without causing a decrease in the strength of the skeleton 14 generated when a nail member is driven into and attached to the vertical beam portion 16, and the horizontal beam is provided. Rail fixing surface portions 13 and 13 having substantially the same width as the width direction of the portion 15 are obtained.

  Further, in this embodiment, the hollow portions 17 are provided at four locations on the transverse beam portion 15 and two locations on the longitudinal beam portion 16, in a cross-sectional shape, with the longitudinal direction of the rectangle being the transverse beam portion 15 and the longitudinal beam portion. It is formed along the surface extending direction of the beam portion 16.

  For this reason, compared with a solid synthetic sleeper, the amount of resin materials can be reduced and manufacturing cost can be reduced.

  Further, when the skeleton part 14 is molded, cooling air can be conducted into the hollow parts 17... So that the polyvinyl chloride resin material is cooled from the inside in accordance with the cooling rate of the outer surface. I can do it.

  For this reason, the deformation | transformation by the difference in the cooling rate inside and outside the said skeleton part 14 can be suppressed, and a dimensional accuracy can be improved.

  In addition, since the hollow portion 17 is formed over substantially the entire longitudinal direction of the skeleton portion 14, there is no stress concentration portion. In this respect as well, a desired amount for the vertical load can be obtained with a small amount of resin material. Strength can be obtained.

  Furthermore, in the longitudinal direction of the synthetic sleeper 10, a large number of ballasts (crushed stones) 3 are laid in the track site 9 on the upper surface side 15 c of the flange surface portion 15 a located between the base moldings 12, 12. ... is loaded and loaded.

  For this reason, since so-called roadbed resistance can be increased, the possibility that the sleeper main body 10 moves in the longitudinal direction can be reduced even if vibration or the like is applied when the train passes.

  FIG. 3 shows a railroad sleeper according to Example 1 of the embodiment of the present invention.

  Note that portions that are the same as or equivalent to those in the above-described embodiment are described with the same reference numerals.

  In the synthetic sleeper 20 as the railroad sleeper of the first embodiment, the sleeper main body 21 is configured to include a skeleton portion 24 having a cross beam portion 25 and a vertical beam portion 26.

  In the horizontal beam portion 25 and the vertical beam portion 26, a plurality of long glass fibers 27 as long fibers are embedded substantially along the longitudinal direction.

  In the synthetic sleeper 20 of Example 1 configured as described above, a plurality of long glass fibers 27 are embedded along the longitudinal direction of the sleeper main body 21.

  For this reason, in substantially the same manner as in the above embodiment, the horizontal beam portion 25 has flange surface portions 25a, 25a projecting in a flange shape in the left-right width direction so as to be substantially symmetrical on the left and right sides. Along with the longitudinal beam portion 26 provided upward from the substantially central portion 25b in the direction, the cross section has a substantially convex shape, is extended in the longitudinal direction, and is formed into a shape that effectively receives a vertical load. At the same time, the plurality of long glass fibers 27 in the interior further improve the bending resistance against vertical load.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment, and thus description thereof is omitted.

  FIG. 4 shows a railroad sleeper according to Example 2 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Example 1. FIG.

  First, in terms of configuration, in the synthetic sleeper 30 as the railway sleeper of the second embodiment, the sleeper main body 31 includes a cross beam portion 35 and a skeleton portion 34 provided with a pair of vertical beam portions 36 and 36. It is configured.

  In the synthetic sleeper 30 according to the second embodiment, a pair of the vertical beam portions 36 and 36 are provided in parallel from the both side edges 35a and 35a in the left-right width direction of the horizontal beam portion 35.

  The vertical beam portions 36 and 36 and the horizontal beam portion 35 have substantially the same thickness, have a substantially concave shape in the left-right width direction cross section, and constitute a skeleton portion 34 extending in the longitudinal direction.

  In the second embodiment, the pedestal moldings 32 and 32 having a substantially trapezoidal shape in a side view are fixedly installed in the concave groove formed by the vertical beam portions 36 and 36 and the horizontal beam portion 35. Has been.

  These pedestal moldings 32, 32 are arranged in the longitudinal direction at substantially the same distance as the rail members 4, 4, and the pair of left and right sides of the upper surface side of the transverse beam portion 35. It is configured to be bonded to the inner side surfaces of the vertical beam portions 36 and 36 so as to be integrated with the skeleton portion 34.

  Further, in the synthetic sleeper 30 of the second embodiment, the hollow portion 17 has four cross-sectional shapes, two in each of the cross beam portions 35 and two in each of the vertical beam portions 36 and 36, and a rectangular longitudinal direction. It is formed along the surface extending direction of the horizontal beam portion 35 and the vertical beam portion 36.

  Next, the effect of the synthetic sleeper 30 of this Example 2 is demonstrated.

  In the synthetic sleeper of Example 2 configured as described above, in addition to the functions and effects of the embodiment and Example 1, the horizontal beam portion 35 is further directed upward from both side edges 35a and 35a in the left-right width direction. A pair of said vertical beam parts 36 and 36 are provided.

  For this reason, since the frame member 34 which has the two vertical beam parts 36 and 36 can be obtained in the single sleeper main body 31, the rigidity with respect to the load of a perpendicular direction can be improved further.

  The pedestal moldings 32 and 32 are independently fixed between the pair of vertical beam portions 36 and 36.

  In the second embodiment, the pedestal moldings 32, 32 are fixed to the upper surface side of the horizontal beam portion 35 and the pair of inner side surfaces of the vertical beam portions 36, 36, respectively. Obtained and fixed so as to be integrated.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment and Example 1, and thus description thereof is omitted.

  FIG. 5 shows a railroad sleeper according to Example 3 of the embodiment of the present invention.

  Parts that are the same as or equivalent to those in the second embodiment will be described with the same reference numerals.

  First, in terms of configuration, in the synthetic sleeper 40 as the railway sleeper of the third embodiment, the sleeper main body 41 includes a cross beam portion 45 and a skeleton portion 44 provided with a pair of vertical beam portions 46 and 46. It is configured.

  Furthermore, in the synthetic sleeper 40 of the third embodiment, a plurality of long glass fibers 27 are embedded along the longitudinal direction of the sleeper body 41.

  Next, the effect of the synthetic sleeper 40 of this Example 3 is demonstrated.

  In the synthetic sleeper of Example 3 configured as described above, in addition to the functions and effects of the embodiment and Examples 1 and 2, the cross beam portion 45 and the vertical beam portions 46 and 46 constituting the skeleton portion 44 are further included. Are embedded with a plurality of long glass fibers 27 as long fibers along the longitudinal direction.

  For this reason, substantially in the same manner as in the first embodiment, the cross beam portion 45 and the vertical beam portions 46, 46 have a substantially concave shape in cross section and are extended in the longitudinal direction so as to effectively receive a vertical load. In addition, the plurality of long glass fibers 27 in the inside further improve the bending resistance against vertical load.

  Other configurations and operational effects are the same as or equivalent to those of the above-described embodiment and Examples 1 and 2. Therefore, the description thereof is omitted.

  FIG. 6 shows a railroad sleeper according to Example 4 of the embodiment of the present invention.

  The same or equivalent parts as in the first embodiment will be described with the same reference numerals.

  First, in terms of configuration, in the synthetic sleeper 50 as the railway sleeper of the fourth embodiment, the integrated pedestal molded bodies 52 and 52 are formed on the sleeper main body 51 that shares the skeleton member 24 of the first embodiment. It is fixed and mainly composed.

  The integrated pedestal molded body 52 is configured to connect the pair of rail fixing surface portions 13 and 13 vertically arranged in the longitudinal direction of the sleeper main body 51 so as to exhibit a substantially M shape in a side view. .

  Further, the integrated pedestal molded body 52 has a substantially central portion in the longitudinal direction, and a concave portion 52a for ballast insertion is formed between the rail fixing surface portions 13 and 13, and a ballast 3 (not shown) is provided. It is comprised so that it may be inserted in this recessed part 52a.

  Next, the effect of the synthetic sleeper 50 of this Example 4 is demonstrated.

  In the fourth embodiment, the integrated pedestal molded bodies 52, 52 are configured by connecting the pair of rail fixing surface portions 13, 13 that are vertically arranged in the longitudinal direction of the sleeper main body 51.

  For this reason, there is no possibility that the interval between the rail fixing surface portions 13 and 13 is shifted due to the accuracy of attachment to the sleeper main body 51. Therefore, dimensional accuracy can be improved.

  Further, by forming concave portions 52a, 52a for ballast interposition between the rail fixing surface portions 13, 13 of the integrated pedestal moldings 52, 52, a so-called road bed is formed by the weight of the interposing ballasts 3 ... By increasing the resistance, the sleeper main body 51 can be made difficult to move in the longitudinal direction.

  About another structure and an effect, since it is the same thru | or equivalent to the said embodiment and Examples 1-3, description is abbreviate | omitted.

  FIG. 7 shows a synthetic sleeper 60 as a railway sleeper according to Example 5 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Example 4. FIG.

  First, in terms of configuration, in the synthetic sleeper 60 as the railway sleeper of the fifth embodiment, the integrated pedestal moldings 52 and 52 are provided on the sleeper body 61 having the skeleton portion 14 of the embodiment in common. It is mainly composed by being fixed.

  Next, the effect of the synthetic sleeper 60 of this Example 5 is demonstrated.

  In the fifth embodiment, in addition to the operational effects of the fourth embodiment, the hollow portions 17 are further formed in the horizontal beam portion 15 at four locations and the vertical beam portion 16 at two locations. The amount of material can be reduced, and the manufacturing cost can be reduced.

  About another structure and an effect, since it is the same thru | or the same as the said embodiment and Examples 1-4, description is abbreviate | omitted.

  FIG. 8 shows a synthetic sleeper 70 as a railroad sleeper according to Example 6 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same or equivalent part as the said embodiment and Examples 1-5.

  First, in terms of configuration, in the synthetic sleeper 70 as the railroad sleeper of Example 6, the sleeper main body 71 having the skeleton portion 14 of the above-described embodiment is formed independently for each rail fixing surface portion 13 and 13. The pedestal moldings 72, 72 are mainly configured by being fixed.

  The pedestal fixing molded body 72 is embedded with a plurality of vinyl chloride pipe members 73 as hollow pipe members extending in the axial direction along the left and right width directions of the sleeper main body 71. .

  Next, the effect of the synthetic sleeper 70 of this Example 6 is demonstrated.

  In the synthetic sleeper 70 of Example 6, a plurality of vinyl chloride pipe members 73 are embedded in the pedestal molded bodies 72.

  Therefore, the amount of the resin material can be reduced as compared with the case where the molded body 72 for the base is solid, and the hollow portion is formed by molding a thermoplastic resin as a resin material with a mold. It can be used as an air hole used for cooling.

  About another structure and an effect, since it is the same thru | or the same as the said embodiment and Examples 1-5, description is abbreviate | omitted.

  FIGS. 9-13 shows the concrete reinforcement synthetic sleeper 80 as a railway sleeper of Example 7 of embodiment of this invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Examples 1-6.

  First, in terms of configuration, in the concrete reinforced synthetic sleeper 80 as the railway sleeper of the seventh embodiment, the sleeper main body 81 having the skeleton part 24 of the first embodiment shown in FIG. 1 is used.

  Reinforcing concrete 82 is placed around the connecting portion between the horizontal beam portion 25 and the vertical beam portion 26 of the sleeper main body 81.

  Further, a plurality of reinforcing iron wires 83 as shown in FIG. 10 are embedded in the reinforcing concrete 82 along the extending direction of the sleeper main body 81.

  Furthermore, a plurality of concrete coupling holes 84 for coupling left and right reinforcing concrete as shown in FIG. 11 are formed in the longitudinal beam portion 26 in the width direction.

  Further, the pedestal moldings 12 and 12 arranged side by side in the left and right width directions are connected by fixing key corner members 85 made of a vinyl chloride member.

  And between the said molded objects 12 and 12 for bases, and the flange surface parts 25a and 25a of the cross beam part 25, the elasticity provision members 86 and 86 comprised with an elastomer are interposed.

  Next, the effect of the concrete reinforced synthetic sleeper 80 of this Example 7 is demonstrated.

  In the concrete reinforced synthetic sleeper 80 of Example 7 configured as described above, a reinforcing concrete 82 is provided around the connecting portion between the horizontal beam portion 25 and the vertical beam portion 26, and the horizontal beam is further provided. The portion 25 and the longitudinal beam portion 26 are firmly connected, and the skeleton portion 24 is integrated.

  Further, a plurality of reinforcing iron wires 83 as shown in FIG. 10 are embedded in the reinforcing concrete 82 along the extending direction of the sleeper main body 81.

  Further, a plurality of concrete connecting holes 84 for connecting the left and right reinforcing concretes 82 and 82 as shown in FIG. 11 are formed in the longitudinal beam portion 26 in the width direction.

  The pedestal moldings 12 and 12 arranged side by side in the left and right width directions are connected by fixing key corner members 85 made of a vinyl chloride member.

  For this reason, the vertical load received by the transverse beam portion 25 of the skeleton portion 24 is effectively transmitted to the longitudinal beam portion 26 through the pedestal moldings 12 and 12.

  Accordingly, the strength can be effectively improved while an increase in weight is suppressed.

  About another structure and an effect, since it is the same thru | or equivalent to the said embodiment and Examples 1-6, description is abbreviate | omitted.

  14 to 16 show a concrete reinforced synthetic sleeper 90 as a railroad sleeper according to Example 8 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Examples 1-7.

  First, in terms of configuration, in the synthetic sleeper 90 as the railway sleeper of the eighth embodiment, the sleeper main body 91 composed of the skeleton portion 94 having substantially the same shape as the skeleton portion 24 of the first embodiment is used as a thermoplastic resin. This is mainly composed of polyvinyl chloride resin.

  Among the hollow portions 17 formed in the cross beam portion 95 and the vertical beam portion 96 of the sleeper main body 91, reinforcing fastening iron wires 92 are inserted one by one in the left, right both sides, and two upper portions. At the same time, fixing concrete 93 made of mortar cement or the like is filled in the hollow portions 17 and solidified.

  In the concrete reinforced synthetic sleeper 90 of Example 8 configured as described above, the skeleton 94 is solidified by the fixing concrete 93 while fastening the fastening iron wires 92 for shortening in the longitudinal direction. Let

  For this reason, the intensity | strength of the said sleeper main body 91 can be improved further.

  About another structure and an effect, since it is the same thru | or the same as the said embodiment and Examples 1-7, description is abbreviate | omitted.

  FIGS. 17-20 shows the concrete reinforcement synthetic sleeper 100 as a railroad sleeper of Example 9 of embodiment of this invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Examples 1-8.

  First, in terms of configuration, in the concrete reinforced synthetic sleeper 100 of the ninth embodiment, instead of the synthetic resin pedestal molded body 12 of the seventh embodiment, a concrete made integrally with the reinforcing concrete 102 is used. The pedestal portions 103 and 103 have rail fixing surface portions 13 and 13 that are spaced apart from each other by a predetermined distance on both sides of the vertical beam portion 26, respectively.

  The rail fixing surface portions 13 and 13 formed on the pedestal portions 103 and 103 are spaced apart from each other at a certain interval in the longitudinal direction of the sleeper main body 101, and at a substantially central position in the longitudinal direction. A recess 105 is formed in a recessed manner and connected integrally.

  A ballast 3 (not shown) is configured to be interposed in the recess 105.

  Furthermore, the rail fixing surface portions 13 and 13 of the pedestal portions 103 and 103 are provided with a plurality of plug portions 104... That are recessed in the vertical direction and constitute a female screw portion.

  Next, the effect of the concrete reinforced synthetic sleeper 100 of the ninth embodiment will be described.

  In the concrete reinforced synthetic sleeper 100 according to the ninth embodiment configured as described above, the rail fixing surface portions 13 and 13 together with the pedestal portions 103 and 103 made of concrete formed integrally with the reinforcing concrete 102 are used in the vertical direction. They are formed on both sides of the beam portion 26 so as to be spaced apart from each other by a certain distance.

  The ballast-inserting recess 105 connects the pedestal portions 103 and 103 positioned in the longitudinal direction, and the pedestal portions 103 and 103 positioned on both the left and right sides of the vertical beam portion 26. These are connected by the concrete coupling holes 84 and 84 shown in FIG.

  For this reason, the rail fixing surface portions 13 and 13 of the pedestal portions 103 and 103 are integrally formed with the high-strength reinforcing concrete 102 placed around the connecting portion between the horizontal beam portion 25 and the vertical beam portion 26. Therefore, the support rigidity of the rail members 4 and 4 can be further improved.

  About another structure and an effect, since it is the same thru | or the same as the said embodiment and Examples 1-8, description is abbreviate | omitted.

  21 to 23 show a concrete reinforced synthetic sleeper 110 as a railroad sleeper according to Example 10 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Examples 1-9.

  First, in terms of configuration, in the concrete reinforced synthetic sleeper 110 of the tenth embodiment, instead of the skeleton portion 24 of the concrete reinforced synthetic sleeper 100 of the ninth embodiment, the transverse beam portion 95 and the vertical beam of the eighth embodiment. A sleeper body 111 is formed using a skeleton 94 having a portion 96.

  About another structure and an effect, since it is the same thru | or the same as the said embodiment and Examples 1-9, description is abbreviate | omitted.

  24 to 25 show a concrete reinforced synthetic sleeper 120 as a railroad sleeper according to Example 11 of the embodiment of the present invention.

  In addition, the same code | symbol is attached | subjected and demonstrated about the same thru | or equivalent part as the said embodiment and Examples 1-10.

  First, in terms of configuration, in the concrete reinforced synthetic sleeper 120 of the eleventh embodiment, as a hollow pipe member extending in the axial direction along the left and right width directions of the sleeper main body 71 of the sixth embodiment. A modification using the base fixing molded bodies 72, 72 in which a plurality of pipe members 73 ... made of vinyl chloride are embedded is shown.

  In the eleventh embodiment, as shown in FIG. 25, a plurality of vinyl chloride pipe members 73... Connect the base molded bodies 122 and 122 positioned in the left-right width direction of the longitudinal beam portion 126 of the skeleton member 124. As shown in FIG.

  In addition, a plurality of hollow vinyl chloride pipe members 127... Are located in the longitudinal direction of the sleeper main body 121 in the transverse beam portion 125 and the vertical beam portion 126 of the skeleton member 124. Are installed side by side.

  Among these vinyl chloride pipe members 127..., Reinforced iron wires 128... Are placed in all the vinyl chloride pipe members 127 in the cross beam portion 125 and in the vinyl chloride pipe member 127 at the top of the vertical beam portion 126. The interior is decorated.

  Next, the effect of this Example 11 is demonstrated.

  In the synthetic sleeper 120 for railways of Example 11 configured in this way, in addition to the functions and effects of the embodiment and Examples 1 to 10, the plurality of pipes made of vinyl chloride are further used when molding with a mold. Even if the pedestal moldings 122, 122 or the skeleton 124 are formed in a compact shape by blowing cooling air into the member 73 and the vinyl chloride pipe member 127, the temperature difference between the inside and outside Can be sufficiently cooled.

  For this reason, the bending deformation etc. which generate | occur | produce by a temperature difference can be suppressed.

  The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes that do not depart from the gist of the present invention are not limited to this embodiment. Included in the invention.

  That is, in the above-described embodiment, the tie plate or the like has a specific gravity of 0.4 or more and 1 because the rail members 4 and 4 are fixed to the rail fixing surface portion 13 by driving a screw-like nail member. .4 or less, the nail member is provided with a hardness that can be pierced and obtain a sufficient fixing force, but is not particularly limited to this, for example, a male member that fixes a rail member or a tie plate in advance. The female screw member to which the screw member is screwed may be embedded in the rail fixing surface portion 13.

  In this case, it is desirable that the specific gravity be about 0.4 or more so as to obtain a hardness for fixing the female screw member.

  Further, in this embodiment, the skeleton part 14 of the synthetic sleeper 10 is formed of a material made of polyvinyl chloride resin as a thermoplastic resin material. Resin, nylon resin or a mixture thereof may be used, and the blending ratio, foaming rate, mixing ratio of the solid filler to be added, and the like are not particularly limited.

  Further, in the embodiment, the transverse beam portion 15 of the skeleton portion 14 has four locations, the longitudinal beam portion 16 has two locations, the cross-sectional shape of the rectangular longitudinal direction is the transverse beam portion 15 and the longitudinal beam portion. The hollow portion 17 is formed along the surface extending direction of 16. However, the present invention is not limited to this. For example, when the skeleton portion 14 is molded, cooling air is introduced into the hollow portion 17. As long as it can be conducted and does not impair the cooling efficiency, the shape, quantity and arrangement are not particularly limited, and the molding method is not limited to continuous molding such as extrusion molding, It may be formed by post-processing using a drilling tool such as a drill.

  Further, in the synthetic sleeper 20 of the first embodiment, a plurality of long glass fibers 27 as long fibers are embedded along the longitudinal direction of the sleeper main body 21. , Polyester fiber, iron wire, etc., as long as they are embedded along the longitudinal direction of the sleeper body 21.

  Further, in the eighth embodiment, the fixing concrete 93 made of mortar cement or the like for fixing the fastening iron wires 92 is filled in the hollow portion 17 and solidified, but not limited thereto. For example, any solidifying material such as polyurethane resin, polyester resin, or a mixture of these resin materials and mortar cement or the like may be used.

  Moreover, in the said embodiment, although the said molded objects 12 and 12 for pedestals are being fixed to the flange surface parts 15a and 15a upper surface side, and both the side surface parts 16a and 16a of the vertical beam part 16, respectively so that it may become united. In particular, the present invention is not limited to this. For example, it is only necessary to be integrally fixed to at least one of the upper surface side of the flange surface portion 15a or the side surface portion 16a of the vertical beam portion 16. A fixing method using a fastening member, an adhesive containing a hot melt adhesive, a molten resin material, mortar cement, or the like is applied between the pedestal moldings 12 and 12 and the surface to which the sleeper main body 21 is fixed. Or what is necessary is just to be able to integrate the said moldings 12 and 12 for bases into the sleeper main body 21, such as pouring and fixing.

It is a partial cross section perspective view of the track using the railroad sleeper of Example 1 of the best mode of the present invention. It is a perspective view explaining composition of a synthetic sleeper in a railroad sleeper of an embodiment. It is a perspective view explaining the structure of a synthetic sleeper in the railroad sleeper of Example 1. FIG. It is a perspective view explaining the structure of a synthetic sleeper in the railroad sleeper of Example 2. FIG. It is a perspective view explaining the structure of a synthetic sleeper in the railroad sleeper of Example 3. FIG. It is a perspective view explaining the structure of a synthetic sleeper in the railroad sleeper of Example 4. FIG. It is a perspective view explaining the structure of a synthetic sleeper in the railway sleeper of Example 5. FIG. It is a perspective view explaining the structure of a synthetic sleeper in the railroad sleeper of Example 6. FIG. It is a perspective view explaining the structure of the concrete sleeper synthetic sleeper in the railroad sleeper of Example 7. FIG. FIG. 10 is a diagram illustrating a configuration of a concrete reinforced synthetic sleeper as a railroad sleeper of Example 7, and is a view in the direction of arrow A in FIG. 9. FIG. 10 is a cross-sectional view at a position along the line BB in FIG. 9, illustrating a configuration of a concrete reinforced synthetic sleeper as a railroad sleeper of Example 7. FIG. 10 is a cross-sectional view taken along a line CC in FIG. 9, illustrating a configuration of a concrete reinforced synthetic sleeper as a railroad sleeper of Example 7. FIG. 10 is a cross-sectional view at a position along the line DD in FIG. 9, illustrating a configuration of a concrete reinforced synthetic sleeper as a railroad sleeper of Example 7. It is a sleeper for railroads of Example 8, and is an end surface perspective view of the frame | skeleton part which comprises the sleeper main body of a concrete reinforcement synthetic sleeper. FIG. 14 is a cross-sectional view at a position corresponding to FIG. 13 in a railway sleeper of Example 8. FIG. 16 is a cross-sectional view at a position along the line EE in FIG. 15 in the railroad sleeper of Example 8. It is a perspective view explaining the structure of the concrete sleeper synthetic sleeper in the railroad sleeper of Example 9. FIG. FIG. 18 is a cross-sectional view taken along the line FF in FIG. 17 in the railroad sleeper of Example 9. It is a railroad sleeper of Example 9, and is sectional drawing in the position along the GG line in FIG. FIG. 18 is a cross-sectional view taken along the line HH in FIG. 17 in the railroad sleeper of Example 9. FIG. 14 is a cross-sectional view at a position corresponding to FIG. 13 in the railroad sleeper of Example 10. FIG. 22 is a cross-sectional view taken along the line II in FIG. 21 in the railroad sleeper of Example 10. FIG. 22 is a cross-sectional view taken along a line JJ in FIG. 21 in the railroad sleeper of Example 10. It is a sleeper for railways of Example 11, and is a side view of a synthetic sleeper explaining composition. FIG. 25 is a cross-sectional view at the position along the line KK in FIG. 24 in the railroad sleeper of Example 11. It is a perspective view explaining a structure in the sleeper for railroads of a prior art example.

Explanation of symbols

3 Ballast
4,4 Rail member 9 Track site 10, 20, 30, 40, 50, 60, 70, 120
Synthetic sleepers (railroad sleepers)
11, 21, 31, 41, 51, 61, 71, 81, 91, 101, 111, 121
Sleeper body (railway sleepers)
12, 32, 122
Molded body for pedestal 13, 33 Rail fixing surface part 14, 24, 34 Frame part 15, 25, 35, 95
Cross beam portion 16, 26, 36, 96
Longitudinal beam part 17 Hollow part 27 Long glass fiber (long fiber)
52 Integral Pedestal Molding 52a Recess 73 Vinyl Chloride Pipe Member (Hollow Pipe Member)
80, 90, 100, 110
Concrete reinforced synthetic sleepers (railway sleepers)
82,102 Reinforced concrete

Claims (9)

  A horizontal plate-like horizontal beam portion that is elongated and laid in the railway site, and a vertical plane vertical beam portion that is provided vertically from the upper surface side of the horizontal beam portion along the longitudinal direction of the horizontal beam portion. A sleeper body composed of a skeleton part integrally formed with a molded body for a pedestal that is integrally fixed to the sleeper body, and the molded body for the pedestal includes a rail laid above the sleeper body. A railroad sleeper having a rail fixing surface portion to be fixed.   By projecting the horizontal beam portion in a flange shape in the left-right width direction, it extends in the longitudinal direction so as to exhibit a substantially convex cross section along with the vertical beam portion provided upward from the substantially central portion in the left-right width direction. The pedestal molded body having the sleeper main body provided and having a block shape along the left and right side surfaces of the vertical beam portion is fixed to the upper surface side of the horizontal beam portion. Item 1. A railroad sleeper according to item 1.   A pair of the vertical beam portions are provided in parallel from both side edges in the left-right width direction of the horizontal beam portion, and the sleeper body has a substantially concave shape in cross section and extends in the longitudinal direction. The railway sleeper according to claim 1, wherein the molded body is fixed between the pair of left and right vertical beam portions on the upper surface side of the horizontal beam portion.   The railroad sleeper according to any one of claims 1 to 3, wherein a hollow portion is formed along a longitudinal direction of the sleeper main body.   The railway sleeper according to any one of claims 1 to 4, wherein long fibers are embedded along the longitudinal direction of the sleeper body.   The railway molded body according to any one of claims 1 to 5, wherein the molded body for the pedestal is formed independently for each rail fixing surface portion in the longitudinal direction of the sleeper main body. Sleepers.   7. The pedestal molded body is an integrated pedestal molded body formed by connecting the pair of rail fixing surface portions arranged in the longitudinal direction of the sleeper body in a longitudinal direction. A railroad sleeper according to any one of the above.   The railroad sleeper according to any one of claims 1 to 7, wherein a hollow pipe member is embedded in the pedestal molded body. The railway sleeper according to any one of claims 1 to 8, wherein reinforcing concrete is placed around a connection portion between the horizontal beam portion and the vertical beam portion.

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