JP2003027410A - Floor board fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor board fixing structure which is prevented from degradation of its fixing force even if a road surface material and a floor board are repeatedly pulled off and fixed for inspection, etc. SOLUTION: The floor board fixing structure is constructed by fixing the floor board 10 on a sleeper 2 at a location beside a rail 1, and fixing the road surface material 20 on the floor board 10. According to the structure, an embedded nut 4 for fixing the floor board is mounted in an upper surface of the sleeper 2, and a through hole 14 is formed in the floor board 10 at a location corresponding to the nut 4. Then, the floor board 10 is mounted on the upper surface of the sleeper 2, and a floor board fixing bolt 6 is screwed into the nut 4 from the side of an upper surface of the floor board 10, to thereby fix the floor board 10 to the sleeper 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor plate fixing structure for fixing a floor plate above a sleeper on the side of a rail and fixing a road surface material above the floor plate.

[0002]

2. Description of the Related Art Conventionally, a rubber elastic road surface material may be laid on the side of a rail at a railroad crossing for non-slip, refining of frozen ice, noise prevention and the like. When laying this, first place the floor board on the sleepers on the side of the rail, fix the floor board to the sleepers with screw spikes, etc., and lay the road surface material on the upper surface of this floor board and fix it with coach screws etc. Is generally done.

[0003]

However, at the time of fixing as described above, a prepared hole is formed in the sleepers or floor boards in any case,
Since the screw is attached by screwing into this pilot hole, there is a problem that the diameter of the pilot hole becomes large and the fixing force decreases by repeatedly unscrewing and screwing it in for inspection and inspection. It was

Further, at the time of inspection / inspection, it is necessary to first remove the road surface material and then the floor plate, which is a complicated task.

Therefore, an object of the present invention is to prevent the fixing force from being lowered even if the road surface material / floor plate is repeatedly removed / fixed for inspection or the like. In addition, it is also an issue to be able to easily remove the road surface material, etc., during the inspection / inspection.

[0006]

The present invention takes the following technical means in order to achieve the above object.

That is, the present invention is a floor plate fixing structure for fixing a floor plate above a sleeper on a side of a rail, and fixing a road surface material above the floor plate. An embedded nut is attached, a through hole is formed in the floor plate at a position corresponding to the embedded nut for fixing the floor plate, and the floor plate is placed on the upper surface of the sleeper, and the upper surface side of the floor plate is attached. The floor board is fixed by screwing a bolt for fixing the floor board to the embedded nut for the floor board. Further, regarding fixing of the road surface material, an embedded nut for fixing the road surface material is attached to the upper surface of the floor plate, and a through hole is formed in the road surface material at a position corresponding to the embedded nut for fixing the road surface material. With the road surface material placed on the upper surface of the floorboard,
It is also possible to adopt a configuration in which the road surface material is fixed by screwing a road surface material fixing bolt from the upper surface side of the road surface material into the road surface material fixing embedded nut. Also,
The floor plate is formed with a through hole penetrating in the up-down direction, and a road surface material fixing bolt is attached upward from the lower part of the through hole, and the road surface material for fixing the road surface material is fixed. A through hole is formed at a position corresponding to the bolt, and with the road surface material placed on the upper surface of the floor plate, a road surface material fixing nut is screwed onto the road surface material fixing bolt from the upper surface side of the road surface material. By doing so, it is possible to adopt a configuration in which the road surface material is fixed. Further, a through hole is formed in the road surface material at a position corresponding to the embedded nut for fixing the sleeper floor plate, and the through hole is for fixing the floor plate when the road surface material is placed on the floor plate. It is also possible to adopt a configuration in which the head of the bolt is formed so as to be rotatably operated from the upper surface side of the road surface material. Further, in the case of adopting such a configuration, it is preferable to employ a configuration in which a blind member is provided in the through hole of the road surface material that accommodates the floor plate fixing bolt so as to cover the head of the floor plate fixing bolt. You can also

According to the above fixing structure of the present invention, the floor board is fixed to the sleeper by screwing the embedded nut for fixing the floor board of the sleeper and the bolt for fixing the floor board. Therefore, the floor board is firmly fixed. be able to. In particular, when the floor plate is removed by inspection or inspection, the floor plate can be removed by removing the bolt from the nut, and the floor plate is fixed by screwing the bolt and the nut in this way. Therefore, even if the screw is repeatedly attached and detached, it is possible to prevent the fixing force of the floor plate from being lowered.

Further, regarding the fixing of the road surface material, when the road surface material fixing embedded nut is attached to the upper surface of the floor plate and the bolt is screwed to the embedded nut, the nut and the bolt are screwed together. The road surface material can be firmly fixed depending on the combination. In particular, when the road surface material is removed by inspection or inspection, the road surface material can be removed by removing the bolt from the nut, and the road surface material can be fixed by screwing the bolt and the nut in this way. Therefore, even if the screw is repeatedly attached and detached, it is possible to prevent the fixing force of the road surface material from being lowered.

Further, a through hole is formed in the floor plate, a road surface material fixing bolt is attached upward from a lower portion of the through hole, and a nut is screwed into the bolt from the upper surface side of the road surface material to thereby form a road surface. When the road material is fixed, the road surface material can be fixed more firmly. In other words, due to the screwing of the bolt and the nut, the force acts downward on the road surface material, and the force acts upward on the floor plate from the lower surface side. The fixation with the material becomes stronger. Further, since the road surface material is fixed by screwing the bolt and the nut as described above, it is possible to prevent a decrease in the fixing force of the road surface material even when the screw is repeatedly attached and detached.

Further, by forming a through hole in the road surface material so that the head portion of the floor plate fixing bolt can be rotatably accommodated from the upper surface side of the road surface material, the floor plate can be removed from the sleepers without separating the road surface material from the floor plate. You can leave. That is, in a state where the road surface material is fixed to the floor plate, by rotating the floor plate fixing bolt from the upper surface side of the road surface material, it is possible to unscrew the floor plate fixing bolt and the floor plate fixing embedded nut. The floorboard can be detached from the sleepers, so that the work such as inspection and inspection can be simplified.

Further, by providing the blind member in the through hole of the road surface material for accommodating the floor plate fixing bolt as described above, dust or the like does not accumulate in the through hole in the installed state.

The floorboard and / or sleepers are preferably made of a fiber reinforced composite material, and for example, a laminate of glass fiber reinforced plastic foam and fiber reinforced plastic can be adopted. Here, as the type of foam resin in the glass fiber reinforced plastic foam,
For example, thermosetting resins such as urethane, epoxy resin, vinyl ester resin, unsaturated polyester resin, and phenol resin, which are hard, are preferably used. In addition, in order to improve the compressive strength and reduce the cost in the foamed resin, inorganic fillers such as calcium carbonate, gypsum, talc, aluminum hydroxide, and clay, and lightweight bone such as silas paloon, pearlite, and glass paloon. Material may be added. As the fiber for reinforcing the foam, for example, glass fiber, carbon fiber, inorganic fiber such as metal fiber,
Although any of organic fibers such as natural fibers and synthetic fibers may be used, glass fiber length is suitable from the viewpoint of strength and economy. Examples of the glass fiber include glass roving, glass roving cloth, glass mat, and continuous strand mat. This fiber may be used alone, two or more layers may be laminated, or long fibers and short fibers may be mixed and used. In addition, long glass fiber reinforced rigid urethane foams (for example, Sekisui Chemical Co., Ltd., trade name "Eslon Neo Lamper FF" in which long glass fibers are aligned in the longitudinal direction to form reinforcing fibers
It is most preferable to adopt "U" or the like) for the purpose of weight reduction, durability and workability. The road surface material is a rubber plate material in which a metal plate is embedded (for example,
The product name “Toughness Rubber” manufactured by Mitsuuma Co., Ltd.) can be used.

Further, it is preferable that each through hole has a counterbore portion capable of accommodating a head portion or a nut of each bolt.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a floor board fixing structure according to a first embodiment of the present invention, and particularly shows a railroad crossing floor board fixing structure at a railroad crossing portion. In the figure, 1 is a rail and 2 is a sleeper. The sleepers 2 are laid at predetermined intervals in a direction intersecting the laying direction of the rails 1, and the rails 1 are fixed to the sleepers 2 by a tie plate 3.

Further, the sleeper 2 has a floor plate fixing embedded nut 4 embedded on the upper surface side and having an internal thread formed on the inner surface thereof. The floor plate fixing embedded nut 4 is embedded in a recess formed in the sleeper body. The embedded nut 4 is embedded in a concave portion with an adhesive filled therein. Further, it is preferable that a vertical groove is formed in the recess to prevent rotation of the embedded nut.

Further, the sleeper 2 has a rubber plate 5 adhered to the upper surface side, and when the floor plate 10 is fixed, elastic means (rubber plate 5) is interposed between the floor plate 10 and the sleeper 2. Will be done.

The floor board 10 is mounted and fixed on the upper surface of the sleeper 2, and in the illustrated example, a contact portion 11 for contacting the flange portion of the rail 1 is formed. The abutting portions 11 are formed on lower portions on both sides of the floor plate 10 in the longitudinal direction (rail width direction), and a rubber plate 12 is attached to the surface (lower surface) thereof. Therefore, when the floor plate is fixed, elastic means (rubber plate 1) is provided between the floor plate 10 and the rail 1.
2) will be interposed. Further, on the lower surface of the floor plate 10, a space portion 13 is formed inside the contact portion 11 to prevent contact with the tie plate 3. The contact portion 11 with respect to the rail 1 may be provided only on one side in the longitudinal direction of the floor plate 10, and in this case, the other side in the longitudinal direction of the floor plate 10 contacts another structural body arranged in parallel with the rail. It is possible to make contact.

Further, the floor plate 10 has through-holes 14 in the up-down direction at positions corresponding to the floor plate fixing embedded nuts 4.
Are formed. The through hole 14 is provided so that the shaft portion 6a of the floor plate fixing bolt 6 can be inserted therethrough. Further, the through hole 14 is provided on the upper surface side of the floor plate 10 with a countersunk portion 14.
The countersunk portion 14a has a function as an accommodation space in which the head portion 6b of the floor plate fixing bolt 6 can be accommodated. In other words, the head 6b of the bolt 6 is provided so as not to project to the front side of the upper surface of the floor plate 10 when the floor plate fixing bolt 6 is screwed on. In addition,
In the present embodiment, the through holes 14 (and the floor plate fixing embedded nuts 4) of the floor plate 10 are formed at six places in a square of 1 meter.

Further, the floor plate 10 is embedded on the upper surface side with a road surface material fixing embedded nut 15 having an internal thread formed on the inner surface thereof. The embedded nut 15 for fixing the road surface material is
It is embedded in a recess formed in the floor plate 10 main body. The embedded nut 15 is embedded with the recess filled with an adhesive. Further, it is preferable that a vertical groove is formed in the recess to prevent the embedded nut 15 from rotating.

A through hole 21 is formed in the vertical direction in the road surface material 20 at a position corresponding to the embedded nut 15 for fixing the road surface material. The through hole 21 is provided so that the shaft portion 7b of the road surface material fixing bolt 7 can be inserted therethrough. Further, the through hole 21 has a countersunk portion 21a on the upper surface side of the road surface member 20, and the countersunk portion 21a functions as a storage space portion in which the head portion 7b of the road surface material fixing bolt 7 can be stored. Will be done. That is, the road surface material fixing bolt 7
The head portion 7b of the bolt 7 is provided so as not to project beyond the upper surface of the road surface member 20 in the state where the bolt is screwed. In addition, in the present embodiment, the through hole 14 of the road surface material 20 (and the embedded nut 15 for fixing the road surface material).
Are formed at 20 locations in a square of 1 meter.

The road surface material 20 is a rubber plate material having a metal plate 20a such as an iron plate embedded therein (for example,
Product name “Toughness Rubber” manufactured by Mitsuuma Co., Ltd.) is preferably used.

The sleepers 2 and the floor board 10 are preferably made of a fiber-reinforced composite material, for example, a laminate of glass fiber-reinforced plastic foam and fiber-reinforced plastic is preferably used. Further, each embedded nut is preferably made of nylon or fiber reinforced plastic such as FRP.

The floor board fixing structure has the floor board 10 on the sleeper 2.
After mounting and fixing the road surface member 20, the road surface member 20 is mounted and fixed on the floor plate 10. When the floor plate 10 and the road surface member 20 are fixed, the embedded nuts 4, 15 and the bolts 6, 7 are screwed together. Therefore, it can be repeatedly attached and detached.

Next, a second embodiment of the present invention will be described. FIG. 2 shows a floor board fixing structure according to the second embodiment of the present invention. In addition, about the part which has the same structure or the same function as 1st embodiment, the drawing number is made common and the detailed description is abbreviate | omitted.

Also in the second embodiment, a floor plate fixing embedded nut 4 is embedded in the sleeper 2, and a through hole 14 is vertically formed in the floor plate 10 at a position corresponding to the floor plate fixing embedded nut 4. The floor plate fixing bolt 6 is formed through the through hole 14, and the floor plate fixing bolt 6 is screwed into the floor plate fixing embedded nut 4 to form the floor plate 10 and the sleeper 2.
And are fixed. The rubber plate 5 is provided on the upper surface of the sleeper 2.
The rubber plate 17 is attached to the bottom surface of the floor plate 10 as well as being attached.
In the fixed state, elastic means (rubber plates 5 and 17) are interposed between the floor plate 10 and the sleepers 2 in a fixed state.

Further, the floor plate 10 is formed with a through hole 16 in the vertical direction through which the shaft portion 7a of the road surface material fixing bolt 7 is inserted, and the through hole 16 is 20 in 1 meter square.
Individually formed. Further, the through hole 16 has counterbored portions 16a and 16b on the upper and lower surfaces thereof, and the counterbored portions 16a and 16b are screwed to the head portion 7b of the road surface material fixing bolt 7 or to the head member 7b. Functioning as a housing space in which the nut 8 can be housed. That is, in the state where the road surface material fixing bolt 7 and the nut 8 are screwed together,
The head 7b and the nut 8 of the bolt 7 are provided so as not to project to the surface side more than the upper surface and the lower surface of the floor plate 10.

Further, a through hole 21 is formed in the road surface member 20 corresponding to the through hole 16 of the floor plate 10. The through hole 21 of the road surface member 20 has a counterbore portion 2 on the upper surface.
1a, and the countersunk portion 21a functions as an accommodation space for accommodating the road surface material fixing nut 9 screwed to the road surface material fixing bolt 7. That is, in the state where the road surface material fixing bolt 7 and the road surface material fixing nut 9 are screwed together, the tip of the shaft portion 7 b of the bolt 7 and the road surface material fixing nut 9 do not project to the surface side beyond the upper surface of the floor plate 10. It is provided in.

In the floor plate fixing structure, first, the road surface material fixing bolt 7 is inserted from the lower part of the through hole 14 of the floor plate 10 to the upper part, and the nut 8 is screwed from the upper side thereof to fix the road surface material fixing bolt 7 to the floor plate 10. And the floorboard 10
Is fixed on the sleeper 2, and the road surface material 20 is fixed on the floor board 10. As described above, since the floor plate 10 and the road surface member 20 are fixed by screwing the nuts 4 and 9 and the bolts 6 and 7, it is possible to repeatedly attach and detach, and the floor plate 10 is fixed to the road surface member 20. Since the head portion 7a is located in the lower part of the shaft portion 7b and the shaft portion 7b is projected upward, the road surface material fixing bolt 7 and the nut 9 are screwed together, so that the road surface material 20 can be securely and firmly fixed.

Next, a third embodiment of the present invention will be described. FIG. 3 shows a floor board fixing structure according to the third embodiment of the present invention. In addition, about the part which has the same structure or the same function as 1st, 2nd embodiment, the figure number is common and the detailed description is abbreviate | omitted.

In the third embodiment, the road surface member 20 and the floor plate 10 are fixed to each other by fixing the road surface member fixing bolts 7 installed from the lower part of the through hole 16 of the floor plate 10 upward as in the second embodiment. And a road surface material fixing nut 9 located on the upper surface side of the road surface material 20 by screwing. In addition, an embedded nut 4 for fixing the floor board is embedded in the sleeper 2,
A through hole 14 is formed in the floor plate 10 in a vertical direction at a position corresponding to the embedded nut 4 for fixing the floor plate.
4, the floor plate fixing bolt 6 is inserted, and the floor plate fixing bolt 6 is screwed into the floor plate fixing embedded nut 4, so that the floor plate 1
0 and sleeper 2 are fixed.

In the third embodiment, in addition to the through holes 14 through which the road surface material fixing bolts 7 are inserted, the through holes 2 in the road surface member 20 correspond to the through holes 14 of the floor plate 10.
2 is formed in the vertical direction. The through hole 22 of the road surface material 20 is formed to have a larger diameter than the through hole 14 of the floor board 10. Specifically, the through hole 22 is formed in a size that can accommodate the head portion 6b of the floor plate fixing bolt 6 in the fixed state, and the head portion of the floor plate fixing bolt 6 rotates from the upper surface side of the road surface member 20. It is configured to be operably housed. Further, the through hole 14 of the floor plate 10 has a countersunk part 14a on the upper surface side of the floor plate 10.
The a is formed to a depth such that the head 6b of the bolt 6 does not project further to the surface side than the upper surface of the road surface material 20 when the floor plate fixing bolt 6 is screwed on.

A blind member 23 is provided in the through hole 22 of the road surface member 20 for accommodating the floor plate fixing bolt 6 so as to cover the head portion 6b of the floor plate fixing bolt 6. As the blindfold member 23, various things such as a cap-shaped member can be adopted. For example, by filling the through hole 22 with a filling material such as urethane, the head portion 6b of the floor plate fixing bolt 6 can be provided. It is possible to cover.

In the floor board fixing structure, the road surface material fixing bolts 7 are first attached to the floor board 10, and then the floor board 10 is placed and fixed on the sleeper 2, and the road surface material 20 is placed and fixed on the floor board 10. Will be obtained by doing. According to the floor plate fixing structure, it is possible to first fix the floor plate 10 and the road surface material 20 with the road surface material fixing bolts 7 and the nuts 9, and then mount and fix the floor board 10 on the sleeper 2.

In particular, since the floor plate fixing bolt 6 is provided so as to be rotatable from above the road surface member 20, the floor plate 10 is operated by operating from above the road surface member 20 after removing the blindfold member 23. You can leave. That is, when the floor plate 10 is removed, the floor plate 10 and the road surface member 20 can be removed by removing only the floor plate fixing bolt 6 without releasing the fixation of the road surface member 20 and the floor plate 10.
As a result, it is not necessary to detach the road surface material fixing nut 9 that is often used for inspection work, and the inspection work can be speeded up.

[0037]

According to the present invention, since the floor board is fixed to the sleeper by screwing the embedded nut for fixing the floor board of the sleeper and the bolt for fixing the floor board, the floor board can be firmly fixed and the floor board When detaching the bolt, the bolt is detached from the nut. Therefore, unlike the conventional fixing of screw spices or the like, it is possible to prevent the fixing force of the floor plate from being lowered even if the screw is repeatedly attached and detached.

[Brief description of drawings]

FIG. 1 is a sectional view of a floorboard fixing structure according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a floor board fixing structure according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a floor board fixing structure according to a third embodiment of the present invention.

[Explanation of symbols]

1 rail 2 sleepers 3 tie plate 4 Embedded nuts for fixing floor plates 5 rubber plate 6 Floor plate fixing bolts 6a Shaft 6b head 7 Road surface material fixing bolts 7a Shaft 7b head 8 nuts 9 Road surface material fixing nuts 10 floor board 11 Contact part 12 rubber plate 13 Space 14 through holes 14a Counterpart 15 Embedded nut for fixing road material 16 through holes 16a, 16b counterbore 17 rubber plate 20 Road surface material 20a iron plate 21 through holes 21a Counterpart 22 Through hole 23 Blindfold member

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Claims (5)

[Claims] 1. A floor plate fixing structure in which a floor plate is fixed to an upper side of a sleeper on a side of a rail, and a road surface material is fixed to an upper side of the floor plate, and an embedded nut for fixing the floor plate is provided on an upper surface of the sleeper. Is attached to the floor board, a through hole is formed at a position corresponding to the embedded nut for fixing the floor board, and the floor board is placed on the upper surface of the sleeper, and the floor board is placed from the upper surface side of the floor board. The floor board fixing structure, wherein the floor board is fixed by screwing a fixing bolt into the embedded nut for the floor board. 2. An embedded nut for fixing a road surface material is attached to an upper surface of the floor plate, and a through hole is formed in the road surface material at a position corresponding to the embedded nut for fixing the road surface material, With the road surface material placed on the upper surface of the floor plate, the road surface material is fixed by screwing a road surface material fixing bolt from the upper surface side of the road surface material into the road surface material fixing embedded nut. The floor plate fixing structure according to claim 1. 3. A through hole penetrating in a vertical direction is formed in the floor plate, and a road surface material fixing bolt is attached upward from a lower portion of the through hole, and the road surface material includes: Through holes are formed at positions corresponding to the road surface material fixing bolts, and with the road surface material placed on the upper surface of the floor plate, the road surface material fixing nut is fixed from the upper surface side of the road surface material. The floor plate fixing structure according to claim 1, wherein the road surface material is fixed by being screwed on the use bolt. 4. A through hole is formed in the road surface material at a position corresponding to the embedded nut for fixing the sleeper floor plate, and the through hole is a state in which the road surface material is placed on the floor plate. The floor plate fixing structure according to claim 1, wherein the head portion of the floor plate fixing bolt is formed so as to be rotatably accommodated from the upper surface side of the road surface material. 5. A blind member is provided in a through hole of a road surface material for accommodating the floor plate fixing bolt so as to cover a head portion of the floor plate fixing bolt. Floor board fixed structure.