JP2007009550A - Sleeper connecting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeper connecting structure, easy in laying, providing the strong connection, simplifying a structure, and reducing cost. <P>SOLUTION: In this sleeper connecting structure 1, a plurality of connecting members 12 and 13 projecting in the track direction are arranged on both longitudinal side surfaces of a sleeper 11, and fitting parts 12a and 13a engaging in at least any direction of the longitudinal direction or the vertical direction of the sleeper 11 are arranged in longitudinal end part of the connecting members 12 and 13, and the mutual connecting members 12 and 13 of the adjacent sleeper 11 are mutually butted and connected by fitting both fitting parts 12a and 13a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connecting structure of connecting sleepers laid on a joint portion or a branch portion of a rail.

  Sleepers made of wood or PC (Prestressed Concrete) have been widely used in the past, but in recent years, sleepers made of synthetic wood made of fiber-reinforced hard resin foam have been used as an alternative to these sleepers. It became so. Synthetic sleepers are light, strong, durable, and resistant to vibration, so they are preferred for rail joints and branches.

  By the way, at the rail joints and branches, the vibration accompanying the passage of the train is large, the consolidation of the roadbed is advanced by the vibration, and the track subsidence is likely to occur. Occurs. As described above, synthetic sleepers are often used for rail joints and branching portions. However, since the synthetic sleepers are light in weight, the “tilting phenomenon” is particularly likely to occur.

  Therefore, a connected sleeper is used as a measure to prevent the “tilting phenomenon”. The connected sleeper is obtained by connecting sleepers by bridging a connecting member between a plurality of sleepers. Therefore, the connection sleeper increases the contact area with the road bed as the overall shape increases, and the resistance against vertical movement increases, thereby effectively preventing the occurrence of the “tilting phenomenon”.

Patent Document 1 discloses such a connected sleeper.
The sleeper disclosed in Patent Document 1 has a plurality of horizontal sleepers arranged between a pair of vertical sleepers arranged in parallel along the rails to form a ladder, and the horizontal sleepers are passed through in the longitudinal direction and fixed to the vertical sleepers. This is a ladder-shaped sleeper in which long connecting members that are attached to each horizontal sleeper are integrated.
Further, another sleeper disclosed in Patent Document 1 is provided with a pair of structures in which a plurality of horizontal sleepers having a half length are fixed to a vertical sleeper at a predetermined interval, and the horizontal sleepers of the pair of structures are prepared. This is a ladder-shaped sleeper that is arranged by abutting the ends of each other and fixing the abutting part together.

According to the sleeper disclosed in Patent Document 1, a vertical sleeper part is added as compared with a conventional sleeper, so that the contact area to the roadbed increases. Moreover, since a plurality of horizontal sleepers are arranged and integrated between the vertical sleepers, the rigidity is high. Accordingly, the load applied to the sleeper is dispersed, and the load applied to the unit area of the road bed is reduced, so that the occurrence of consolidation can be suppressed.
JP 2002-275802 A

However, the sleeper disclosed in Patent Document 1 has a complicated structure, requires time for assembly, and is bulky and heavy.
In addition, there is a problem that the connecting member and the fixed portion are likely to be loosened due to vibration and impact applied as the train passes. Furthermore, since the structure is complicated, high processing accuracy is required, and an increase in cost has been desired.

  The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a sleeper connection structure that is easy to lay and provides a strong connection, and that is simple in structure and saves costs. .

  The invention according to claim 1, which is proposed to achieve the above object, is provided with a plurality of connecting members projecting in the orbital direction on both longitudinal sides of the sleeper trees, and at the longitudinal ends of the connecting members, the sleeper trees are provided. A sleeper connecting structure in which a fitting portion that engages in at least one of the longitudinal direction and the vertical direction is provided, and the connecting members of adjacent sleepers are butted against each other so that both fitting portions are fitted to each other. It is.

According to the present invention, the sleepers are connected by simply connecting the connecting members of the adjacent sleepers and applying the adhesive to the fitting portions of the two.
In addition, when both the fitting portions are fitted, the mating portion is engaged in at least one of the longitudinal direction and the vertical direction of the sleeper, so that the resistance against the load applied to the fitting portion is high. In addition, by providing the fitting portion, it is possible to increase the bonding area as compared with the case where the connecting members are simply brought into contact with each other, and the bonding strength is remarkably increased.
In addition, since a required number of sleepers can be successively added and connected, the construction is less bulky and easier to lay than a configuration in which a specified number of sleepers are integrated at once.

  In other words, according to the present invention, it is possible to construct a connected sleeper with high rigidity by easily connecting with a simple structure, effectively preventing the occurrence of the “tilting phenomenon”, and improving the layability and durability. The cost can be reduced while improving.

In this invention, the fitting part can take the structure engaged with the longitudinal direction of a sleeper, or the structure engaged with the up-down direction of a sleeper. Moreover, the structure engaged with both the longitudinal direction and the up-down direction of a sleeper can also be taken.
By adopting a configuration that engages in both directions, it is possible to further increase the resistance against the load applied to the fitting portion.

  The specific structure of the fitting portion may be, for example, a configuration in which a fitting portion made of a ridge is provided at the end of one connecting member and a fitting portion made of a groove is provided on the other connecting member. it can. By arranging these ridges and ridges along the longitudinal direction of the sleeper, they can be engaged with each other in the vertical direction of the sleeper by being fitted to each other. Moreover, it can be made to engage with the longitudinal direction of a sleeper by fitting a convex line and a concave line along the up-down direction of a sleeper tree, and making it mutually fit.

  In addition, for example, the fitting portion of one connecting member is formed with a convex portion, the fitting portion of the other connecting member is formed with a concave portion, and the convex portion and the concave portion are fitted to each other, thereby fitting each other. It is possible to engage with the longitudinal direction and the vertical direction of the sleeper by combining them.

  According to a second aspect of the present invention, in the sleeper tree connecting structure according to the first aspect, the connecting member is integrally attached to the sleeper in advance.

  According to the present invention, it is possible to sequentially add and connect as many as necessary at the laying site without requiring the trouble of attaching the connecting member to the sleeper, and the laying work can be performed efficiently. Moreover, the sleeper before being connected is simply a short connecting member attached to the sleeper main body, and is light and not bulky, and can be easily transported and laid.

  In the present invention, as a structure for attaching the connecting member to the sleeper, for example, a configuration in which the connecting member is fixed using an adhesive or a metal fitting can be employed. It is also possible to attach the connecting member through the sleeper tree.

  The invention according to claim 3 is provided with a plurality of connecting members projecting in the track direction on both longitudinal sides of the sleeper, and the connecting members adjacent to each other are butted together to cover a part or all of the butted portion. In this way, the sleeper is connected to one or two or more connecting members over both connecting members, and the connecting member and the connecting members that are addressed to each other are integrally fixed and connected.

  According to the present invention, since the joined connecting members are firmly and integrally fixed by the connecting member, the rigidity of the whole connected sleeper is remarkably increased, and the occurrence of the “tilting phenomenon” is effectively prevented. Can do.

In the present invention, the connection member may have a shape that covers only a part of the butted portion of the connecting member, or may have a shape that covers the entire butted portion.
For example, if the connecting member has a rectangular cross section, a configuration in which only the upper surface side of the abutting portion is covered by a flat connecting member, a configuration in which the upper and lower surfaces are covered, or a configuration in which the entire upper, lower, left, and right sides of the abutting portion are covered can be adopted. . In the configuration that covers the entire top, bottom, left, and right of the butted portion, it is also possible to employ a rectangular tube material as the connecting member.

  Moreover, in this invention, the structure which provided the position shift prevention part which protrudes below rather than the lower surface of a sleeper can also be taken in the lower part of a connection member. According to this configuration, when the connected sleepers are laid on the ballast roadbed, the displacement preventing portion of the connecting member is embedded in the ballast, and a resistance is exerted against the load applied to the connecting member via the sleeper. . Thereby, it becomes possible to suppress the position shift of the sleeper effectively.

  According to a fourth aspect of the present invention, in the connecting structure of the sleeper tree according to the third aspect, the connecting member is a solid material or a hollow material having a polygonal shape, a circular shape, or an elliptical shape in cross section. .

  According to the present invention, it is possible to improve the bending rigidity in the longitudinal direction of the connecting member by employing the connecting member made of a solid material having a polygonal shape, a circular shape, or an elliptical cross section. When a solid material is used as the connecting member, it can be manufactured using the same wood or synthetic wood as the sleeper.

  Further, by adopting a connecting member made of a hollow material having the same cross-sectional shape, it is possible to reduce the weight while ensuring bending rigidity. When a hollow material is employed as the connecting member, it can be manufactured using a metal material.

  According to a fifth aspect of the present invention, in the sleeper tree connection structure according to the third or fourth aspect, the connection member is provided so as to penetrate the sleeper tree, and is connected to the sleeper tree at portions protruding from both longitudinal sides of the sleeper tree. It is set as the structure provided with the expansion latching | locking part which blocks | relates relative movement.

  According to the present invention, since the connecting member penetrating the sleeper has the enlarged locking portion, even if a load in the longitudinal direction is applied to the connecting member, the enlarged locking portion abuts on the longitudinal side surface of the sleeper and Relative movement is prevented. In other words, according to the present invention, the connecting member can be firmly integrated and fixed to the sleeper despite the structure in which the connecting member is passed through the sleeper. Thereby, it becomes possible to improve the rigidity of the whole connected sleeper.

  According to the sixth aspect of the present invention, a plurality of engaging members are attached to both longitudinal sides of the sleeper, and a connecting member provided with a locking portion at both ends is bridged between adjacent sleepers to lock the connecting member. This is a sleeper connecting structure in which a portion is engaged and connected to an engaging member provided on the sleeper and an engaging holding member that holds the engagement is attached between the connecting member and the engaging member.

  According to the present invention, the sleepers are connected to each other simply by engaging the engaging portion of the connecting member with the engaging member attached to the sleeper, and the engagement is held by the engagement holding member. Thereby, the adjacent sleepers can be efficiently connected in a short time, and laying workability is improved.

  Further, according to the present invention, the engaging member attached to the sleeper is only required to have a function of engaging the connecting member, so that the protrusion length from the sleeper can be reduced. Therefore, even when the engaging member is previously attached to the sleeper, it is light and not bulky, and the transportability and laying property can be improved.

  According to a seventh aspect of the present invention, in the sleeper linking structure according to any one of the third to sixth aspects, the connection member or the engagement holding member is at least one of a longitudinal direction or a trajectory direction of the sleeper. It is set as the structure provided with the position shift prevention part which protrudes toward a downward direction along a direction.

  According to the present invention, when the connected sleepers are laid on the ballast roadbed, the lower portion of the misalignment prevention portion is embedded in the ballast. Therefore, when a lateral load is applied to the sleeper, the misalignment prevention unit comes into contact with the ballast and develops a drag force, thereby effectively suppressing the misalignment of the sleeper.

  In the present invention, the misalignment prevention unit can be provided on the connection member or the engagement holding member. Moreover, the position shift prevention part can take the structure provided along the longitudinal direction of a sleeper, or the structure provided along a track direction. By providing the position shift prevention part along the longitudinal direction of the sleeper, position shift due to the load in the track direction is suppressed. Further, by providing the misalignment prevention portion along the track direction, misalignment due to the load in the longitudinal direction of the sleeper is suppressed. Further, by adopting a configuration in which the misalignment prevention unit is provided along the longitudinal direction and the trajectory direction of the sleeper, it is possible to suppress the misalignment due to the weighting in the longitudinal direction and the trajectory direction of the sleeper.

  The invention according to claim 8 is provided with connecting members extending in the orbital direction at both longitudinal ends of the sleeper, and at least one of the longitudinal direction and the vertical direction of the sleeper at both longitudinal ends of the connecting member. This is a sleeper connecting structure in which fitting parts that are engaged with each other are provided, and connecting members of adjacent sleepers are butted together so that both fitting parts are fitted together.

According to the present invention, the sleepers are connected by simply connecting the connecting members of the adjacent sleepers and applying the adhesive to the fitting portions of the two. In addition, when both the fitting portions are fitted, the mating portion is engaged in at least one of the longitudinal direction and the vertical direction of the sleeper, so that the resistance against the load applied to the fitting portion is high. In addition, by providing the fitting portion, it is possible to increase the bonding area as compared with the case where the connecting members are simply brought into contact with each other, and the bonding strength is remarkably increased.
In addition, since the required number of sleepers can be added and connected in sequence, it is less bulky and easier to lay than a configuration in which a specified number of sleepers are integrated at once.

  In this invention, the fitting part can take the structure engaged with the longitudinal direction of a sleeper, or the structure engaged with the up-down direction of a sleeper. Moreover, the structure engaged with both the longitudinal direction and the up-down direction of a sleeper can also be taken. By adopting a configuration that engages in both directions, the bonding strength can be further improved.

  The invention according to claim 9 is provided so that connecting members extending in the track direction are provided at both longitudinal ends of the sleepers, and the connecting members of the adjacent sleepers are butted together so as to cover a part or all of the butted portions. This is a sleeper connecting structure in which connecting members over both connecting members are addressed, and the connected connecting members and both connecting members are integrally fixed and connected.

According to the present invention, since the joined connecting members are firmly and integrally fixed by the connecting member, it is possible to improve the rigidity of the whole connected sleeper.
In the present invention, the connection member may have a shape that covers only a part of the butted portion of the connecting member, or may have a shape that covers the entire butted portion.

  According to a tenth aspect of the present invention, in the sleeper tree coupling structure according to the tenth aspect, the coupling member has a groove shape, and the connection member is inserted into the groove of the coupling member and fixed. Yes.

  The present invention specifically shows the shapes of the connecting member and the connecting member according to the ninth aspect of the present invention. According to the present invention, the invention described in claim 9 can be easily implemented, and the connecting members can be integrally and firmly fixed by the connecting member.

By the way, in the said invention, it is good to manufacture the sleeper board with the synthetic wood which uses a long fiber reinforcement hard synthetic resin foam as a raw material. Also, the connecting member and the connecting member are preferably made of synthetic wood similar to the sleeper as long as strength is ensured.
As a kind of foamed resin, for example, a hard resin that is a thermosetting resin such as a urethane resin, an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, or a phenol resin is preferably used. In order to improve compressive strength and reduce costs in the foamed resin, inorganic fillers such as calcium carbonate, gypsum, talc, aluminum hydroxide, clay, and lightweight bones such as shirasu balloon, pearlite, glass balloon, etc. Materials may be added.

  Examples of fibers that reinforce the hard synthetic resin foam include inorganic fibers such as glass fibers, carbon fibers, metal fibers, and ceramic fibers, synthetic fibers such as aromatic polyamide fibers, and organic fibers such as natural fibers. Glass fiber is suitable from the viewpoint of strength and economy. The fiber is preferably in the form of long fibers such as yarn, cloth, roving, roving cloth, and cloth mat. Short fibers such as chips and middle fibers and hollow fillers such as shirasu balloons are used in combination as necessary. You may do it.

  Examples of the glass fiber include glass roving, glass roving cloth, glass mat, and continuous strand mat. These fibers may be used alone, or may be used by laminating two or more layers, or a mixture of long fibers and short fibers may be used. The most preferred material is a foam reinforced with long glass fibers that are made of hard urethane resin aligned in the longitudinal direction. For example, trade name “Eslon Neo Lumber FFU” manufactured by Sekisui Chemical Co., Ltd. may be mentioned.

  Here, the stress applied to the sleeper is mainly caused by a bending moment with the rail as a fulcrum, and a high bending rigidity (EI) in the longitudinal direction of the sleeper is required. Therefore, the synthetic sleeper used for the sleeper is the one in which the sleeper itself is made by aligning the fiber direction of the synthetic wood with the longitudinal direction of the sleeper, or by laminating synthetic woods with different fiber directions. It is suitable in terms of improving Moreover, it is good to use what was cut out from the original plate so that a fiber direction may become a longitudinal direction of a reinforcement member also as a connection member and a connection member.

  According to the present invention, it is possible to provide a sleeper sleeper connection structure that is light in weight and easy to lay with a very simple configuration and that has high durability. Thereby, it becomes possible to improve the workability of laying connected sleepers at the joints and branching portions of the rails and to reduce the cost.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
1 (a) and 1 (b) are an exploded perspective view and a perspective view of a connecting sleeper 10 employed in the connecting structure 1 (1a) of the sleeper according to the first embodiment, and FIG. 1 (c) shows a connecting structure 1a of the sleeper tree. FIG. 2 and FIG. 3 are perspective views showing a modification of the connecting sleeper 10 of FIG. 1 (b). 4 (a) and 4 (b) are an exploded perspective view and a perspective view of the connecting sleeper 19 employed in the sleeper connecting structure 1 (1b) of the modified example, and FIG. 4 (c) is a connecting structure 1b of the sleeper tree. FIG.

  The sleeper tree connection structure 1 of the present embodiment is provided with a connection member provided with a plurality of fitting portions projecting in the track direction on both longitudinal sides of the sleeper tree, and the connection members adjacent to each other are butted together. A fitting part is fitted and connected.

The sleeper 10 for connection employ | adopted as the connection structure 1a is comprised by the sleeper 11 and the connection members 12 and 13 like Fig.1 (a).
The sleeper tree 11 is a sleeper tree of a normal size, and square holes 11a and 11a penetrating in the width direction are opened in the vicinity of the track position where the rail is fastened. In this embodiment, the sleeper tree 11 is made of synthetic wood.

  The connecting member 12 is a square member having substantially the same width and height as the sleeper 11 and having a length that is substantially half the distance between the opposing side surfaces of the adjacent sleepers 11. A concave line (fitting part) 12a is provided toward the other end, and a convex part 12b having a shape corresponding to the square hole 11a of the sleeper 11 is provided at the other longitudinal end part.

The connecting member 13 is a square member having substantially the same shape as the connecting member 12, and one long end is provided with a protrusion (fitting portion) 13 a in the vertical direction, and the other long end is a sleeper 11. A convex portion 13b having a shape corresponding to the square hole 11a is provided.
In the present embodiment, the connecting members 12 and 13 are also made of synthetic wood.

As shown in FIGS. 1A and 1B, the connecting sleeper 10 is assembled by inserting the convex portions 12b and 13b of the connecting members 12 and 13 into the square holes 11a so as to sandwich the sleeper 11 from the left and right. In assembling, a resin adhesive is applied to the convex portions 12b and 13b and the square hole 11a.
In the assembled sleeper 10, as shown in FIG. 1 (b), the two connecting members 12, 12 project from one longitudinal side surface of the sleeper 11 toward the track direction, and from the other long side surface to the track direction. The two connecting members 13 and 13 project toward the shape.

The sleeper tree connection structure 1a of the present embodiment uses the sleeper 10 for connection.
As shown in FIG. 1 (c), the connecting structure 1 a has the connecting sleepers 10, 10 adjacent to each other, the connecting members 12, 12 of one connecting sleeper 10, and the connecting members 13, 13 of the other connecting sleeper 10. And the both concave ridges 12a and the convex ridges 13a are fitted and connected. In fitting, a resin adhesive is applied to the concave stripes 12a and the convex stripes 13a. As a result, the connecting sleepers 10 and 10 arranged adjacent to each other are connected to each other by the connecting members 12 and 13.

  Here, since the concave strip 12a of the connecting member 12 and the convex strip 13a of the connecting member 13 are both provided in the vertical direction, they are engaged with each other in the longitudinal direction of the sleeper 11 when fitted. That is, a large resistance is exerted against the load applied in the longitudinal direction of the sleeper 11 by the fitting of the concave stripes 12a and the convex stripes 13a. Further, by providing the concave stripes 12a and the convex stripes 13a, the joining area is increased as compared with the case where the end portions of the connecting members 12 and 13 are simply abutted and joined. Thereby, it is possible to join the connecting members 12 and 13 firmly.

  Thus, according to the sleeper tree connection structure 1a of the present embodiment, the connection members 12 and 13 can be firmly joined and connected in spite of the extremely simple configuration. The sleepers 10, 10 as a whole have high rigidity, and it is possible to effectively prevent the occurrence of the “tilting phenomenon”.

  Further, as shown in FIG. 1 (b), the connecting sleeper 10 before being connected only has the connecting members 12 and 13 protruding from both sides of the sleeper 10, and is light and does not become bulky. Thereby, conveyance and laying work can be easily performed, and it is possible to connect and connect the required number of sleepers 10 in order.

By the way, the sleeper 10 for connection employ | adopted for this embodiment fixes the connection members 12 and 13 to the both sides of the sleeper 10 like FIG.1 (b), However, It is also possible to take another structure. is there.
For example, the structure of the connecting sleeper 14 shown in FIG.
As shown in FIG. 2A, the connecting sleeper 14 has a structure in which connecting members 16 and 16 are sandwiched between sleeper pieces 15a and 15 that are divided vertically.

  The sleeper piece 15a is obtained by vertically dividing a square bar having the same size as the sleeper 11 shown in FIG. 1A, and grooves 15b and 15b cut out over the entire length in the width direction are provided in the vicinity of the track position. Yes. A pillow 15 is formed by superimposing the pillows 15a, 15.

  The connecting member 16 is a square member having substantially the same width and height as the sleeper 15 and having a length substantially equal to the distance between the opposing side surfaces of the adjacent sleepers 15, 15. A concave line (fitting part) 16a is provided toward the other end, and a convex line (fitting part) 16b is provided at the other longitudinal end part in the vertical direction. In addition, grooves 16c and 16c that are notched upward and downward over the entire length in the width direction are provided in the central portion.

  As shown in FIG. 2A, the connecting sleeper 14 is assembled by sandwiching the connecting members 16 and 16 between the sleeper pieces 15a and 15 and fitting the grooves 15b of the sleeper pieces 15a into the grooves 16c of the connecting member 16. At the time of assembly, a resin adhesive is applied to the entire inner surface facing the sleeper piece 15 a and the groove 15 b and the groove 16 c of the connecting member 16.

  As shown in FIG. 2B, the assembled sleeper 14 has the same outer shape as that of the aforementioned sleeper 10 (see FIG. 1b). Therefore, the same effect can be produced by adopting the connecting sleeper 14 in the connecting structure 1a (see FIG. 1c).

Here, each of the connecting sleepers 10 and 14 (see FIGS. 1b and 2b) is configured such that the connecting member is provided with concave and convex stripes in the vertical direction. It is not limited to a simple structure.
For example, as shown in FIG. 3 (a), a recess (fitting portion) 17 a is provided at one longitudinal end of the connecting member 17 in the longitudinal direction of the sleeper 15, and the longitudinal of the sleeper 15 is provided at the other longitudinal end. It is also possible to employ a connecting sleeper 14a provided with ridges (fitting portions) 17b in the direction.

  By adopting the connecting sleeper 14a in the connecting structure 1a (see FIG. 1c), the concave strips 17a and the convex strips 17b of the connecting members 17 and 17 are fitted and engaged in the vertical direction. A large drag force is exerted against the load applied in the vertical direction, and the bonding area is expanded. Thereby, the connection members 17 and 17 can be joined firmly, and the rigidity of the whole connected sleeper 14a improves.

  Further, for example, as shown in FIG. 3B, a concave portion (fitting portion) 18a is provided at one longitudinal end portion of the connecting member 18, and a convex portion (fitting portion) 18b is provided at the other longitudinal end portion. It is also possible to employ a connecting sleeper 14b.

  By adopting the connecting sleeper 14b in the connecting structure 1a (see FIG. 1c), the concave portions 18a and the convex portions 18b of the connecting members 18 and 18 are fitted and engaged in the longitudinal direction and the vertical direction of the sleeper 15. To do. Therefore, a large drag force is exerted against the load applied in the longitudinal direction and the vertical direction of the sleeper 15 and the joining area is expanded. Thereby, the connection members 18 and 18 can be joined firmly, and the rigidity of the whole connected sleeper 14b improves.

  By the way, the above-mentioned connecting sleepers 10, 14, 14a, 14b all have the same sleeper tree and connecting member heights, but it is also possible to manufacture a connecting sleeper having a reduced connecting member height compared to the sleeper. Is possible.

For example, as shown in FIG. 4A, it is also possible to manufacture a connecting sleeper 19 having a structure in which connecting members 20 and 20 having a height lower than that of the sleeper 15 are sandwiched between the sleeper pieces 15a and 15a. .
The connecting member 20 is a flat plate material having a thickness twice the depth of the groove 15b provided in the sleeper piece 15a, and a concave strip (fitting portion) 20a is provided at one longitudinal end portion in the vertical direction. The other longitudinal end portion is provided with a ridge (fitting portion) 20b in the vertical direction.

  As shown in FIG. 4B, the connection sleeper 19 can be further reduced in weight because the height of the connection members 20 and 20 is reduced. In addition, as shown in FIG. 4C, the connecting structure 1b can be implemented by connecting the sleepers 19 for connection.

  The connecting sleepers 10, 14, 14a, 14b, and 19 are all provided with fitting portions (concaves, concaves and protrusions, convexes) having different shapes at both ends of the connecting member. We made common use. However, it is also possible to prepare a connecting sleeper provided with only concave ridges (concave portions) and a connecting sleeper provided with only convex ridges (convex portions), and adopt a connecting structure in which these are connected alternately.

(Second Embodiment)
FIGS. 5A and 5B are an exploded perspective view and a perspective view of the connecting sleeper 21 employed in the connecting structure 2 (2a to 2e) of the sleeper of the second embodiment, and FIG. 5C is a connection of the sleeper. FIG. 5D is a perspective view showing the sleeper tree connection structure 2b, and FIG. 6 is a perspective view showing the sleeper tree connection structures 2c to 2e. 7 (a) and 7 (b) are an exploded perspective view and a perspective view of the connecting sleeper 27 employed in the sleeper tree connection structure 2 (2f to 2h), and FIG. 7 (c) shows the sleeper tree connection structure 2f. FIG. 8 is a perspective view showing the connecting structures 2g and 2h of the sleeper trees.

  In addition, the connection structure 2 of this embodiment employs a part of the same member as the connection structure 1 described in the first embodiment. Accordingly, the same parts are denoted by the same reference numerals, and redundant description is omitted.

  The sleeper tree connection structure 2 of the present embodiment is provided with a plurality of connection members projecting in the track direction on both longitudinal sides of the sleeper tree. Then, one or two or more connecting members over both connecting members are addressed so that adjacent connecting members of the sleeper are butted against each other so as to cover a part or all of the butted portions. The connecting member is integrally fixed and connected.

As shown in FIG. 5A, the sleeper 21 for connection employed in the connection structures 2 a to 2 e is composed of the sleeper 15 and the connection members 22 and 22.
The connecting member 22 is a member provided with a fixing hole 22a in a flat plate material. That is, the connecting member 22 removes the recesses and protrusions from the above-described connecting member 20 (see FIG. 4a), and instead of the fixing holes 22a and 22a penetrating in the vertical direction at the center in the width direction, both ends in the longitudinal direction. Each has a shape provided in the vicinity.

As shown in FIGS. 5A and 5B, the connecting sleeper 21 is assembled by sandwiching the connecting members 22 and 22 between the sleeper pieces 15a and 15a and joining them with a resin adhesive.
As shown in FIG. 5B, the assembled sleeper 21 has a shape in which the connecting members 22, 22 protrude from the longitudinal side surfaces of the sleeper 11 toward the track.

The connecting structure 2a of the present embodiment uses the connecting sleeper 21 and the connecting member 23.
The connecting member 23 is a flat metal plate having substantially the same width as the connecting member 22 of the connecting sleeper 21 and having a length approximately twice the length of the connecting member 22 protruding from the sleeper 15. Four fixing holes 23a are formed at positions corresponding to the fixing holes 22a.

  As shown in FIG. 5C, the connecting structure 2a is arranged with the connecting sleepers 21 and 21 adjacent to each other, and the long ends of the connecting members 22 and 22 of the connecting sleepers 21 and 21 are butted together. The connecting member 23 is applied to the upper surfaces of the connected connecting members 22 and 22. Then, the bolt B is inserted into the connecting member 23 and the fixing holes 23 a and 22 a of the connecting member 22 and fastened with the nut N to be connected.

  When the adjacent connecting sleepers 21 and 21 are connected in this way, the connecting members 22 and 22 and the connecting member 23 are integrally formed in a state where the upper surface side of the butted portion of the connecting members 22 and 22 is covered with the connecting member 23. Fixed. As a result, the connecting members 22 and 22 are engaged with the longitudinal direction, the vertical direction and the track direction of the sleeper 15, and the connecting members 22 and 22 are reinforced by the connecting member 23 and have high bending rigidity with respect to the longitudinal direction. Presents. Thereby, the rigidity of the connected sleepers 21 and 21 as a whole is improved.

  As described above, according to the connection structure 2a (2) of the present embodiment, the adjacent connection sleepers 21 can be firmly integrated and connected with an extremely simple configuration, and the connected connection sleepers 21 and 21 are connected. The overall rigidity is high, and it is possible to effectively prevent the occurrence of the “tilting phenomenon”.

  Further, as shown in FIG. 5B, the connection sleeper 21 before connection is light and not bulky, can be easily transported and laid, and the required number of connection sleepers 21. Can be connected in sequence.

As shown in FIG. 5D, the connecting structure 2b (2) is obtained by further adding a connecting member 23 to the connecting structure 2a (see FIG. 5c).
In other words, the connecting structure 2b has the connecting members 23 respectively attached to the upper and lower surfaces of the connecting members 22 and 22 that are abutted, and the connecting members 23 and 23 and the connecting member 22 are integrally fixed by bolts B and nuts N. And connect.

  According to the connection structure 2b of the present embodiment, the connection members 22 and 22 are reinforced from above and below by the connection members 23 and 23, and the bending rigidity is further improved. Thereby, it becomes possible to further improve the rigidity of the connected sleepers 21 and 21 as a whole.

The connection structure 2c (2) is obtained by changing the connection member 23 to the connection member 24 in the connection structure 2a (see FIG. 5c) as shown in FIG. 6A.
The connecting member 24 is a metal member having a U-shaped cross section in which the both side edges of the connecting member 23 are extended in the width direction and the extended portions are bent downward to form side surfaces 24b and 24b. Is provided with four fixing holes 24a.

  The connection structure 2 c is configured to cover the connection members 22, 22 with which the connection member 24 is abutted, and to be fastened and fixed with bolts B and nuts N. In other words, the connecting member 24 is firmly fixed to the connecting members 22 and 22 in a state where the upper part and both sides of the butted portion of the connecting members 22 and 22 are covered with the connecting member 24.

  According to this connection structure 2c, the connection members 22 and 22 are sandwiched between the side surfaces 24b and 24b of the connection member 24, and the resistance against the load applied to the connection member 22 in the longitudinal direction of the sleeper 15 is increased. It is possible to further improve the rigidity of the connected sleepers 21 and 21 as a whole.

The connection structure 2d (2) is obtained by changing the connection member 24 to the connection member 25 in the connection structure 2c (see FIG. 6a) as shown in FIG. 6B.
The connecting member 25 has a side surface 25b formed by extending the side surface 24b of the connecting member 24 further downward, and four fixing holes 25a are provided on the upper surface.

  Similarly to the above-described connection structure 2c (see FIG. 6a), the connection structure 2d covers the connection members 22 and 22 with which the connection member 25 is abutted and is fastened and fixed with bolts B and nuts N. When the connecting member 25 is fixed to the connecting members 22, the side surface 25 b of the connecting member 25 protrudes further downward than the lower surface of the sleeper 15.

  Therefore, when the connecting sleepers 21 and 21 connected by the connecting structure 2c are laid on the ballast road floor, the lower portion of the side surface 25b of the connecting member 25 is embedded in the ballast. Thereby, the connection member 25 expresses a large resistance against the load applied in the longitudinal direction of the sleeper 15, and it is possible to effectively suppress the displacement of the connected sleeper 21.

The connection structure 2e (2) is obtained by changing the connection member 25 to the connection member 26 in the connection structure 2d (see FIG. 6b) as shown in FIG. 6C.
The connecting member 26 is a rectangular tube having an inner dimension substantially equal to the cross-sectional outer shape of the connecting member 22, and the length thereof is substantially the same as the connecting member 25 (see FIG. 6b). Four fixing holes 26 a are provided on each of the upper surface and the lower surface of the connection member 26.

  The connecting structure 2e is one in which connecting members 22 and 22 are inserted into the connecting member 26 from both sides, and bolts B are passed through the connecting member 26 and the connecting members 22 and 22 inserted therein to be fastened and fixed with nuts N. is there.

  According to the connecting structure 2e, the connected connecting members 22 and 22 are sandwiched from above and below and right and left by the tube-shaped connecting member 23, and the resistance against the load applied in the longitudinal direction and the up and down direction of the sleeper 15 increases. It is possible to further improve the rigidity of the connected sleepers 21 and 21 as a whole.

  Next, the sleeper link connection structure 2f of this embodiment will be described. The sleeper 27 for connection employ | adopted as the connection structure 2f is comprised with the sleeper 15 and the connection members 28 and 28 like Fig.7 (a). Here, the connecting member 22 employed in the connecting sleeper 21 (see FIG. 5b) is made of a flat plate material, but the connecting member 28 is a metal rectangular tube.

  The connecting member 28 is provided with enlarged locking portions 28b and 28b extending over the entire circumference of the tube with a space substantially equal to the width of the sleeper 15 at the center of the rectangular tube having substantially the same outer dimensions as the connecting member 22 described above. It is a member. In addition, two fixing holes 28 a are provided on each of the upper surface and the lower surface in the vicinity of both longitudinal ends of the connecting member 28.

As shown in FIGS. 7A and 7B, the connecting sleeper 21 is assembled by sandwiching connecting members 28 and 28 between the sleeper pieces 15a and 15a and joining them with a resin adhesive.
As shown in FIG. 7B, the assembled connecting sleeper 27 has the connecting members 28 and 28 project in the track direction in a state where the enlarged locking portions 28b and 28b are in contact with both longitudinal side surfaces of the sleeper 15. It becomes a shape. Accordingly, even when a load in the track direction is applied to the connecting member 28, the expansion locking portion 28b prevents the relative movement of the connecting member 28 relative to the sleeper.

The sleeper tree connection structure 2f of the present embodiment uses this connection sleeper 27 and the connection member 23 (see FIG. 5d). The connection procedure by the connection structure 2f is basically the same as that of the connection structure 2b (see FIG. 5d).
That is, as shown in FIG. 7 (c), the connecting sleepers 27, 27 are arranged adjacent to each other, and the longitudinal ends of the connecting members 28, 28 of both connecting sleepers 27, 27 are butted against each other. The connecting members 23 and 23 are placed on the upper and lower surfaces of the connecting members 28 and 28. Then, the bolt B is passed through the upper connecting member 23, the connecting member 28, and the lower connecting member 23, and is fastened and fixed with a nut N.

  According to the connecting structure 2f, as described above, the relative movement of the sleeper 15 of the connecting sleeper 27 and the connecting member 28 is prevented, so that the rigidity of the connected connecting sleepers 27 and 27 is improved.

  The connection structure 2g (2) is obtained by changing the connection members 23 and 23 to the connection member 26 (see FIG. 6c) in the connection structure 2f (see FIG. 7c) as shown in FIG. 8 (a). The connecting procedure is the same as that of the connecting structure 2f described above (see FIG. 6c).

  According to the connecting structure 2g, in addition to the effects of the connecting structure 2f described above, relative displacement of the connecting member 28 with respect to the sleeper 15 in the connecting sleeper 27 is prevented. It becomes possible to further improve the overall rigidity.

The connection structure 2h (2) is obtained by changing the connection member 26 to the connection member 29 in the connection structure 2g (see FIG. 8a) as shown in FIG. 8B.
The connecting member 29 is obtained by adding misalignment preventing portions 29b and 29c to the lower part of the connecting member 26 (see FIG. 8a). In other words, the connecting member 29 is provided with a misalignment preventing portion 29b that protrudes downward in the longitudinal direction in the longitudinal direction at the center portion in the width direction of the lower surface of the rectangular tube, and in the width direction at the center portion in the longitudinal direction of the lower surface of the rectangular tube. This is a structure provided with a misalignment prevention portion 29c that protrudes downward over the entire length toward.

In addition, since the connecting member 29 includes the misalignment preventing portions 29b and 29c, the fixing holes 29a are arranged two by two in the width direction avoiding the misalignment preventing portion 29b, and the fixing holes 28a of the connecting member 28 are also made to correspond. Are arranged in the width direction.
The connecting procedure of the connecting sleepers 27, 27 by the connecting structure 2h is the same as that of the connecting structure 2g (see FIG. 8a). When the connecting member 29 is fixed to the connecting members 28, 28, the misalignment preventing portions 29 b, 29 c of the connecting member 29 protrude below the lower surface of the sleeper 15.

  Therefore, when the connecting sleepers 27 and 27 connected by the connecting structure 2h are laid on the ballast roadbed, the lower portions of the misalignment prevention portions 29b and 29c provided on the connecting member 29 are embedded in the ballast. Thereby, the connection member 29 expresses a large resistance against the load applied in the longitudinal direction and the track direction of the sleeper 15, and the displacement of the connected sleeper 27 can be effectively suppressed. It becomes.

The sleeper tree connection structure 2 (2a to 2h) of the second embodiment has been described above. However, in each connection structure 2, a connection structure in which the connection member is further changed may be used.
For example, the connection member 29 employed in the connection structure 2h (see FIG. 8b) is connected to the lower connection member 23 employed in the connection structure 2b (see FIG. 5d) or the connection member 26 employed in the connection structure 2e (see FIG. 6c). It is also possible to adopt a configuration in which a misalignment prevention unit is added.

  Moreover, it replaces with the connection members 23 and 23 of the connection structure 2f (refer FIG. 7c), and the connection member 24 employ | adopted for the connection structure 24 and the connection structure 2d (refer FIG. 6b) employ | adopted for the connection structure 2c (refer FIG. 6a). It is also possible to use it. Further, the connection member 23 below the connection structure 2f (see FIG. 7c) may be omitted.

  In addition, the connection structure 2 described in the second embodiment is configured to use a connection member having a square or rectangular tubular cross section, but the cross section is a triangle or pentagon or more polygon, or the cross section is a circle or an ellipse. It is also possible to employ a connecting member. In that case, it is possible to ensure a strong connection by adopting a connecting member having a shape matching the cross-sectional shape of the connecting member.

(Third embodiment)
9 (a) and 9 (b) are an exploded perspective view and a perspective view of a connecting sleeper 30 employed in the sleeper tree connecting structure 3 of the third embodiment, and FIG. 9 (c) is a perspective view showing the sleeper connecting structure 3. It is.
The connecting structure 3 of this embodiment uses a connecting sleeper 30 in which engaging members 32 are attached to both longitudinal sides of the sleeper 31. That is, the connecting member 33 is bridged between the adjacent connecting sleepers 30, 30, the connecting member 33 is engaged with the engaging member 32, and the engaging holding member 34 is connected to the engaging member 33. 32 is attached.

  As shown in FIG. 9A, the sleeper 31 of the connection sleeper 30 is a normal sleeper, and is provided with a through hole 31a penetrating in the width direction through the longitudinal side surface in the vicinity of the track position. The through holes 31a fix the engaging members 32, and a total of eight through holes 31a are provided for each engaging member.

As shown in FIG. 9A, the engaging member 32 is a metal member in which a rectangular engaging portion 32b is integrally formed at the center of a flat plate-like main body portion 32a. In this embodiment, a mold is used. Made.
The engaging portion 32b includes a slit-like opening penetrating vertically, and the opening has a function of fitting and engaging an end portion of a connecting member 33 described later. Two fixing holes 32c are provided in the main body 32a on both sides of the engaging portion 32b.

  As shown in FIGS. 9 (a) and 9 (b), the connecting sleeper 30 is obtained by fixing engaging members 32 on both longitudinal sides of the sleeper 31. That is, a pair of engaging members 32 are brought into contact with both longitudinal sides so as to sandwich the sleeper 31, the bolt B is inserted from the fixing hole 32 c of one engaging member 32, and the other engaging member 32 passes through the sleeper 31. Assembling is performed by protruding from the fixing hole 32 c of the joint member 32 and fastening and fixing with the nut N. A total of four engaging members 32 are fixed to each of the longitudinal sides of the sleeper.

  As shown in FIG. 9C, the connecting member 33 employed in the connecting structure 3 is a member in which the longitudinal end portions of the metal flat plate are bent downward to form a locking portion 33a. A number of fixing holes 33b are provided. The connecting member 33 has substantially the same width as the slit-shaped opening of the engaging portion 32 b of the engaging member 32, and the length between the engaging portions 33 a and 33 a facing each other is between the adjacent sleepers 31 and 31. It is approximately equal to the distance between the opposing sides.

As shown in FIG. 9B, the engagement holding member 34 is a metal member in which the position shift prevention portions 34d and 34e are integrally attached to the lower portion of the main body portion 34a.
The main body part 34a has a shape in which both longitudinal end portions of the metal flat plate are once bent downward, and further bent outward in the lateral direction, and the holding portion at the longitudinal both end portions bent in the lateral direction. 34b is formed. Further, four fixing holes 34c are provided in the planar portion of the main body 34a.

  The misregistration prevention portion 34d is formed by providing a plate member that protrudes downward over the entire length in the longitudinal direction on the lower surface of the central portion in the width direction of the main body portion 34a. Further, the misalignment prevention portion 34e is formed by providing a plate material that protrudes downward over the entire length in the width direction on the lower surface of the central portion of the main body portion 34a.

The sleeper tree connection structure 3 of the present embodiment uses the connection sleeper 30, the connection member 33, and the engagement holding member 34.
That is, in the connection structure 3, as shown in FIG. 9C, the connection sleepers 30, 30 are arranged adjacent to each other, and the connection member 33 is bridged between the engagement members 32, 32 facing each other. The engaging portions 33a and 33a of the connecting member 33 are inserted into the engaging portions 32b and 32b of the members 32 and 32, respectively. Further, the main body 34 a of the engagement holding member 34 is brought into contact with the lower surface of the connecting member 33, and a bolt B is inserted into the connecting member 33 and the engagement holding member 34 and fastened with a nut N.

  As described above, when the connecting member 33 and the engagement holding member 34 are mounted on the adjacent sleepers 30 and 30, the engaging portions 33 a and 33 a of the connecting member 33 are fitted into the engaging portions 32 b of the adjacent engaging member 32. Then, the pillows 31 and 31 are positioned and connected. Further, since the connection member 33 and the holding portion 34b of the engagement holding member 34 sandwich the engagement portion 32b of the engagement member 32 from above and below, the connection member 33 is prevented from detaching from the engagement member 32 and firmly. Connected.

  Further, when the connecting sleepers 30 and 30 connected by the connecting structure 3 are laid on the ballast roadbed, as shown in FIG. 9C, the lower portions of the misalignment preventing portions 34d and 34e of the engagement holding member 34 are embedded in the ballast. . As a result, the displacement prevention part 34d expresses a large resistance against the load applied in the longitudinal direction of the sleeper 31 and the displacement prevention part 34e expresses a large resistance against the load applied in the track direction. It is possible to effectively suppress the displacement of the connected sleepers 30, 30.

(Fourth embodiment)
10 (a) and 10 (b) are an exploded perspective view and a perspective view of the sleeper 50 for connection employed in the sleeper tree connection structure 5a (5) of the fourth embodiment, and FIG. 10 (c) shows the sleeper tree connection structure 5a. It is a perspective view shown. Moreover, Fig.11 (a), (b) is a perspective view of the sleepers 53 and 55 for connection employ | adopted as the connection structure 5b (5), FIG.11 (c) is a perspective view which shows the connection structure 5b.

  The sleeper tree connecting structure 5 of the present embodiment is provided with connecting members extending in the track direction at both longitudinal ends of the sleepers, and provided with fitting portions at both longitudinal ends of the connecting members, so that adjacent sleeper connecting members are connected to each other. Are connected to each other by fitting the fitting portions of the connecting members together.

The sleeper 50 for connection employ | adopted as the connection structure 5a is comprised by the sleeper 51 and the connection members 52 and 52 like Fig.10 (a).
The sleeper 51 is a normal sleeper, and the upper and lower ends of the longitudinal end portions are cut out in the width direction to form convex portions 51a and 51a. In this embodiment, the sleeper tree 51 is made of synthetic wood.

  The connecting member 52 is a square member having a height substantially equal to the sleeper tree 51, a width narrower than that of the sleeper tree 51, and a length substantially equal to the distance between the adjacent sleeper trees 11. A concave portion (fitting portion) 52a is provided at one longitudinal end portion of the connecting member 52, and a convex portion (fitting portion) 52b is provided at the other longitudinal end portion. In addition, a concave portion 52 c into which the convex portion 51 a of the sleeper 51 is fitted is provided at the longitudinal center portion of the connecting member 52. In the present embodiment, the connecting member 52 is also made of synthetic wood.

As shown in FIGS. 10 (a) and 10 (b), the connecting sleeper 50 has the concave portions 52c and 52c of the connecting members 52 and 52 inserted into the convex portions 51a and 51a of the sleeper 51 so as to sandwich the sleeper 51 from the longitudinal direction. And assemble. At the time of assembly, a resin adhesive is applied to the convex portions 51 a of the sleepers 51 and the concave portions 52 c of the connecting members 52.
As shown in FIG. 10 (b), the assembled sleeper 50 has a shape in which connecting members 52, 52 extend in the track direction at both longitudinal ends of the sleeper 51.

The sleeper tree connecting structure 5a of this embodiment uses this connecting sleeper tree 50.
That is, the connection structure 5a is arranged with the connection sleepers 50 and 50 adjacent to each other as shown in FIG. 10C, and the connection members 52 and 52 of one connection sleeper 50 and the other connection sleeper 50. The connecting members 52 and 52 are brought into contact with each other, and both the concave portions 52a and the convex portions 52b are fitted and connected. At the time of fitting, a resin adhesive is applied to the concave portions 52a and the convex portions 52b. As a result, the connecting sleepers 50 and 50 arranged adjacent to each other are connected to each other by the connecting members 52 and 52.

Here, the concave portion 52 a of the connecting member 52 is engaged with the convex portion 52 b of the adjacent connecting member 52 to engage with the inner side in the longitudinal direction of the sleeper 51. Further, the convex portion 52 b of the connecting member 52 is engaged with the concave portion 52 a of the adjacent connecting member 52 to engage with the outer side of the sleeper 51 in the longitudinal direction. Accordingly, a resistance is developed against a load applied inward or outward in the longitudinal direction of the sleeper 11 by fitting the concave portion 52a and the convex portion 52b of the connecting member 52.
Further, by providing the concave portion 52a and the convex portion 52b, the joining area is expanded as compared with the structure in which the end portions of the connecting members 52 and 52 are merely abutted. Thereby, the connection members 52 and 52 are firmly joined and integrated.

  Thus, according to the sleeper tree connection structure 5a of the present embodiment, it is possible to firmly connect and connect adjacent sleeper sleepers 50 in spite of the extremely simple configuration. The rigidity of the sleeper 50, 50 as a whole is high, and it is possible to effectively prevent the occurrence of the “tilting phenomenon”.

  Further, as shown in FIG. 10B, the connecting sleeper 50 before being connected only has the connecting members 52, 52 extending from both longitudinal ends of the sleeper 51, and is light and not bulky. Thereby, conveyance and laying work can be easily performed, and it is possible to sequentially connect and connect the required number of sleepers 50.

  By the way, the sleeper 50 for connection employ | adopted as the connection structure 5a is provided with the recessed part 52a and the convex part 52b in the longitudinal both ends of the connection member 52 like FIG. Although the members are made common as the connectable configuration, other configurations can be adopted. For example, it is possible to adopt a connecting structure 5b using connecting sleepers 53 and 55 shown in FIGS.

  As shown in FIG. 11A, the sleeper 53 for connection employed in the connection structure 5b is obtained by attaching connecting members 54, 54 to both longitudinal ends of the sleeper 51. 54a and 54a are provided. Further, as shown in FIG. 11 (b), the connecting sleeper 55 has connecting members 56, 56 attached to both longitudinal ends of the sleeper 51, and convex portions 56 a, 56 a are provided at both longitudinal ends of the connecting member 56. Is provided.

  As shown in FIG. 11C, the connecting structure 5b can also connect the sleepers 53 for connection and the sleepers 55 for connection to each other in order and connect them as many as necessary. However, it is possible to develop the same rigidity as that of the connecting structure 5a.

(Fifth embodiment)
12 (a) and 12 (b) are an exploded perspective view and a perspective view of a connecting sleeper 60 used in the sleeper tree connecting structure 6 of the fifth embodiment, and FIG. 12 (c) is a perspective view showing the sleeper connecting structure 6. It is.

  The sleeper tree connection structure 6 of the present embodiment is provided with connection members extending in the orbital direction at both longitudinal ends of the sleeper so that the adjacent sleeper connection members are butted against each other so as to cover part or all of the butted portions. The connecting member over both the connecting members is addressed, and the addressed connecting member and both the connecting members are integrally fixed and connected.

The sleeper 60 for connection employ | adopted as the connection structure 6 is comprised by the sleeper 61 and the connection members 62 and 62 like Fig.12 (a).
The sleeper tree 61 is a sleeper tree of a normal size, and is made of synthetic wood in this embodiment.

  The connecting member 62 is higher than the sleeper 51 and narrower than the sleeper 51, has a length substantially equal to the distance between the adjacent sleepers 11, and one longitudinal side central portion extends in the lateral direction over the entire length in the longitudinal direction. A cross-section in which the groove 62a is formed by being cut out is a square-shaped square member. Further, in the vicinity of both longitudinal ends of the connecting member 62, a total of four fixing holes 62b penetrating vertically through the groove 62a are provided. In this embodiment, the connecting member 62 is also made of synthetic wood.

As shown in FIGS. 12A and 12B, the connecting sleeper 60 is fitted with the center portions of the groove portions 62 a and 62 a of the connecting members 62 and 62 in both longitudinal end portions of the sleeper 51 so as to sandwich the sleeper 61 from the longitudinal direction. And assemble. At the time of assembly, a resin adhesive is applied to the longitudinal ends of the sleeper 51 and the grooves 62 a and 62 a of the connecting members 62 and 62.
As shown in FIG. 12B, the assembled sleeper 60 has a shape in which connecting members 62 and 62 extend in the track direction at both longitudinal ends of the sleeper 61.

The sleeper tree connection structure 6 of the present embodiment uses the connection sleeper tree 60 and the connection member 63.
As shown in FIG. 12C, the connecting member 63 is a square member having a width and height substantially equal to the groove 62 a of the connecting member 62 and a length substantially equal to the distance between the longitudinal side surfaces of the adjacent sleepers 61. In addition, four fixing holes 63a penetrating vertically corresponding to the fixing holes 62b of the connecting member 62 are provided.

  As shown in FIG. 12 (c), the connecting structure 6 has the connecting sleepers 60, 60 adjacent to each other, the connecting members 62, 62 of one connecting sleeper 60, and the connecting members 62, 62 of the other connecting sleeper 60, 62 and abut. Then, the connecting member 63 is inserted into the groove portions 62 a and 62 a so as to cover the groove portion 62 a of the butted portion, and the bolt B is passed through the connecting member 62 and the connecting member 63 and fastened with the nut N. As a result, the connecting sleepers 60 and 60 arranged adjacent to each other are connected to each other by the connecting members 62 and 62.

According to the connection structure 6, since the butted connection members 62, 62 are integrated and fixed by the connection member 63, the drag force against the load applied in the longitudinal direction and the vertical direction of the sleeper 15 is increased, and the connected connection It becomes possible to improve the rigidity of the whole sleeper 60, 60.
Further, in the method of fixing the connecting member and the connecting member with the bolt B and the nut N, it is preferable that the nut N is welded in advance to facilitate the tightening operation and prevent the nut from loosening.

  In addition, in the connection structure 6 of this embodiment, it was set as the structure connected only using the connection member 63, but in addition to the connection member 63, the upper surface of the connection member 62 or the upper part and the lower part of a butted part are covered. It is also possible to adopt a structure in which the connecting plate is fixed to the upper and lower surfaces. Further, in addition to the connecting member 63, it is also possible to adopt a structure in which the connecting members 62, 62 are inserted and fixed to a rectangular tube covering the entire butted portion.

  Although the first to fifth embodiments according to the present invention have been described above, it has been described in the above embodiments that the sleepers for connection are prepared in advance. However, it is also possible to assemble the connecting sleeper itself at the laying site.

(A), (b) is a disassembled perspective view and perspective view of the connecting sleeper employed in the connecting structure of the sleeper of the first embodiment, and (c) is a perspective view showing the connecting structure of the sleeper. (A), (b) is the disassembled perspective view and perspective view which show the modification of the sleeper for connection of FIG.1 (b). (A), (b) is a perspective view which shows another modification of the sleeper for connection of FIG.1 (b). (A), (b) is a disassembled perspective view and perspective view of the connecting sleeper employed in another sleeper connecting structure of the first embodiment, and (c) is a perspective view showing the connecting structure of the sleeper. (A), (b) is an exploded perspective view and a perspective view of a connecting sleeper employed in the connecting structure of the sleeper of the second embodiment, (c) is a perspective view showing the connecting structure of the sleeper, and (d) is a perspective view. It is a perspective view which shows the connection structure of another pillow. (A)-(c) is a perspective view which shows the structure of another sleeper of 2nd Embodiment using the sleeper for connection of FIG.5 (b). (A), (b) is a disassembled perspective view and perspective view of the connecting sleeper employed in yet another sleeper connecting structure of the second embodiment, and (c) is a perspective view showing the connecting structure of the sleeper. . (A), (b) is a perspective view which shows the further another sleeper connection structure of 2nd Embodiment using the sleeper for connection of FIG.7 (b). (A), (b) is a disassembled perspective view and perspective view of the connecting sleeper employed in the sleeper connecting structure of the third embodiment, and (c) is a perspective view showing the sleeper connecting structure. (A), (b) is a disassembled perspective view and perspective view of the connecting sleeper employed in the sleeper connecting structure of the fourth embodiment, and (c) is a perspective view showing the connecting structure of the sleeper. (A), (b) is a perspective view of the connection sleeper employ | adopted as another sleeper connection structure of 4th Embodiment, (c) is a perspective view which shows the connection structure of the sleeper. (A), (b) is the disassembled perspective view and perspective view of the connecting sleeper employed in the connecting structure of the sleeper of the fifth embodiment, and (c) is a perspective view showing the connecting structure of the sleeper.

Explanation of symbols

1, 1a, 1b Sleeper tree connection structure 2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h Sleeper tree connection structure 3 Sleeper tree connection structure 5, 5a, 5b Sleeper tree connection structure 6 , 15, 31, 51, 61 Sleeper 12, 12, 16, 17, 18, 20 Connecting member 12a, 16a, 17a, 20a Fitting part (concave)
13a, 16b, 17b, 20b Fitting part (projection)
18a Fitting part (recessed part)
18b Fitting part (convex part)
22, 28 Connecting member 23, 24, 25, 26, 29 Connecting member 28b Enlargement locking portion 29b, 29c, 34d, 34e Position shift prevention portion 32 Engaging member 33a Locking portion 33 Connecting member 34 Engagement holding member 52, 54, 56 Connecting member 52a, 54a Fitting part (concave part)
52b, 56a Fitting part (convex part)
62 Connecting member 62a Groove (groove)
63 Connection member

Claims (10)

  A plurality of connecting members projecting in the track direction are provided on both longitudinal sides of the sleeper, and the longitudinal end of the connecting member is engaged in at least one of the longitudinal direction and the vertical direction of the sleeper A connecting structure for a sleeper, characterized in that a connecting part is provided, and connecting members of adjacent sleepers are butted against each other so that both fitting parts are engaged with each other.   The sleeper tree connection structure according to claim 1, wherein the connection member is integrally attached to the sleeper in advance.   A plurality of connecting members projecting in the track direction are provided on both longitudinal sides of the sleeper, and the connecting members adjacent to each other are butted together so as to cover part or all of the butted portions. Or the connection structure of the sleeper characterized by addressing two or more connection members, and fixing and connecting the addressed connection member and both connection members integrally.   The sleeper tree connection structure according to claim 3, wherein the connection member is a solid material or a hollow material having a polygonal shape, a circular shape, or an elliptical cross section.   The said connection member is provided with the expansion latching | locking part which prevents relative movement with a sleeper in the site | part which protrudes from the longitudinal both sides of a sleeper while being provided through the sleeper. Connecting structure of sleepers.   An engagement member in which a plurality of engaging members are attached to both longitudinal sides of the sleeper, a connecting member provided with a locking part at both ends is bridged between adjacent sleepers, and the locking part of the connecting member is provided on the sleeper. A sleeper connecting structure characterized in that an engagement holding member that holds and engages is attached between the connecting member and the engaging member.   The said connection member or engagement holding member is provided with the position shift prevention part which protrudes below along at least any one of the longitudinal direction of a sleeper, or a track direction, The any one of Claim 3 thru | or 6 characterized by the above-mentioned. The connection structure of the pillow according to claim 1.   A connecting member that extends in the track direction is provided at both longitudinal ends of the sleeper, and a fitting portion that is engaged with at least one of the longitudinal direction and the vertical direction of the sleeper is provided at both longitudinal ends of the connecting member. A connecting structure for a sleeper, characterized in that connecting members of adjacent sleepers are butted against each other and are fitted together to be connected.   A connecting member extending in the track direction is provided at both longitudinal ends of the sleeper, the connecting members adjacent to each other are butted together, and a connecting member that spans both connecting members so as to cover part or all of the butted portion is provided. A structure for connecting sleepers, characterized in that the connection member and the connection member to which both are connected are fixed and connected together.   The pillow connecting structure according to claim 9, wherein the connecting member has a groove shape, and the connecting member is inserted into a groove of the connecting member and fixed.

Images