JP6475476B2 - Rail soundproofing device - Google Patents

Description

  The present invention relates to a rail soundproofing device, and more particularly to a rail soundproofing device that prevents noise generated from the rail.

  2. Description of the Related Art Conventionally, a rail soundproofing device that prevents noise generated from a rail is known (for example, see Patent Document 1).

  In general, railroad rails are installed on a ballast such as gravel laid on a roadbed via sleepers arranged at a predetermined interval in the rail extending direction. Such a rail is provided on the ballast with a relatively wide rail bottom, a rail abdomen standing on the rail bottom and having a smaller width than the rail bottom, and an upper end of the rail abdomen. A rail head having a width larger than that of the abdomen and smaller than that of the rail bottom.

  In addition, a sound absorbing material is disposed from the side surface of the rail abdomen to the upper surface of the rail bottom so as to span between them. A soundproof cover is disposed on the surface of the sound absorbing material opposite to the rail so as to cover the sound absorbing material. The soundproof cover has an inclined portion extending from the upper end of the side surface of the rail abdomen to the tip of the upper surface of the rail bottom, a vertical portion extending from the lower end of the inclined portion to the side of the rail bottom portion, and a lower end of the vertical portion to the lower surface of the rail bottom portion. And a horizontal portion extending along. A fixing tool for fixing the soundproof cover and the sound absorbing material to the rail is attached to the outer periphery of the soundproof cover.

JP 2010-242337 A

  However, the rail soundproofing device disclosed in Patent Document 1 has a disadvantage in that a gap is formed between the end portion of the inclined portion of the soundproof cover in the rail extending direction and the side surface of the rail belly portion. For this reason, during the maintenance of the rail (for example, when the ballast cleaner passes), the ballast enters from the gap between the end of the inclined portion of the soundproof cover in the rail extending direction and the side of the rail abdomen. There is a problem of damage.

  The present invention has been made to solve the above-described problems. The object of the present invention is that the soundproof cover is damaged due to the ballast entering the gap between the soundproof cover and the rail. It is providing the soundproofing device of the rail which can suppress this.

  As a means for solving the above-described problems, a rail soundproofing device according to the present invention is configured as follows.

  That is, the soundproofing device for a rail according to the present invention is a sound absorbing device that prevents noise generated from a rail having a rail bottom, a rail abdomen erected on the rail bottom, and a rail head provided on an upper end of the rail abdomen. It is premised on a configuration including a material and a soundproof cover.

In the rail soundproofing device according to the present invention, the sound absorbing material is provided on a side surface of the rail abdomen, and the soundproof cover includes a cover body covering the sound absorbing material, and an end of the cover body in the rail extending direction. A side wall portion extending from a top portion toward a side surface of the rail belly portion, and the cover body has a slope portion extending from the upper end portion of the side surface of the rail belly portion to the top surface of the rail bottom portion, and the side wall The section has a bent portion that is bent in a direction inclined at a predetermined angle with respect to the rail extending direction toward the side surface of the rail abdomen at the end of the inclined portion in the rail extending direction. edge parts are characterized in Rukoto to have a shape along the side surface of the rail abdomen.

  According to the soundproofing device for a rail having such a configuration, since the edge of the side wall portion of the soundproof cover and the side surface of the rail abdomen can be arranged close to each other, the gap between the cover body of the soundproof cover and the side surface of the rail abdomen Can be made smaller (fill the gap). Thereby, at the time of rail maintenance (for example, at the time of passage of a ballast cleaner), it can suppress that a ballast penetrate | invades from the clearance gap between the cover main body of a soundproof cover, and the side surface of a rail belly part. As a result, it is possible to prevent the soundproof cover from being damaged due to the ballast entering the gap between the cover body of the soundproof cover and the side surface of the rail abdomen.

Specific examples of the present invention include the following. In the rail soundproofing device, the side wall portion of the soundproof cover includes a fold extending in a direction inclined at a predetermined angle with respect to the rail extending direction, and the bent portion is bent along the fold. Is preferred. The bent portion may have a substantially triangular shape when viewed from the rail extending direction. Thereby, the bent portion can easily follow the shape of the side surface of the rail abdomen, and the gap between the inclined portion of the soundproof cover and the side surface of the rail abdomen can be further reduced.

  In the rail soundproofing device according to the present invention, preferably, the side wall portion of the soundproof cover is formed by bending an end portion of the cover body in the rail extending direction toward a side surface of the rail abdomen. It is characterized by being. According to this structure, the ballast can be easily formed from the gap between the cover body of the soundproof cover and the side surface of the rail abdomen simply by bending the end of the cover body of the soundproof cover toward the side surface of the rail abdomen. Can be prevented from entering.

  In this case, preferably, the bent portion of the soundproof cover includes a first bent portion formed by bending an end portion of the cover body in the rail extending direction toward a side surface of the rail abdomen, An end portion of the first bent portion includes a second bent portion bent along the rail extending direction. If comprised in this way, even if a comparatively small clearance gap is formed between the edge of a 1st bending part, and the side surface of a rail abdominal part, a cover main body of a soundproof cover and a rail of a rail are formed by a 2nd bending part. The gap with the side surface of the abdomen can be made smaller (fill the gap). Thereby, a ballast becomes difficult to penetrate | invade into the clearance gap between the cover main body of a soundproof cover, and the side surface of a rail belly part.

  In the configuration including the bent portion, the edge of the bent portion of the soundproof cover is preferably formed in a straight line shape or a curved shape along the side surface of the rail belly portion. If comprised in this way, since the edge of the bending part of a soundproof cover will become easy to follow the shape of the side surface of a rail abdominal part, the clearance gap between the cover main body of a soundproof cover and the side surface of a rail abdominal part is made smaller (a clearance gap is set. Can fill).

  ADVANTAGE OF THE INVENTION According to this invention, the soundproof apparatus of the rail which can suppress that a soundproof cover breaks down resulting from a ballast invading into the clearance gap between a soundproof cover and a rail can be provided.

It is a perspective view which shows the external appearance of the soundproofing device of the rail by one Embodiment of this invention. It is the figure which looked at the soundproofing device of the rail from the rail extension direction. It is the figure which looked at the soundproofing device of the rail from the side. It is the figure which looked at the soundproofing device of the rail by the 1st modification from the side. It is the figure which looked at the soundproofing device of the rail by the 2nd modification from the side.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(This embodiment)
-Overall configuration of rail soundproofing device-
As shown in FIGS. 1 and 2, the rail soundproofing device 1 includes a first soundproofing member 2 attached to a required portion of the surface of the rail R from the left side (one side), and a right portion of the required portion of the surface of the rail R. The second soundproofing member 3 attached from the other side (the other side) and the fixture 4 for fixing both the soundproofing members 2 and 3 are provided. These soundproof members 2 and 3 can prevent noise generated from the rail R. The soundproof members 2 and 3 are constituted by sound absorbing materials 11 and 13 and soundproof covers 12 and 14.

  The rail R has a rail bottom Rb, a rail abdomen Rw, and a rail head Rh. The rail bottom Rb is installed on a ballast such as gravel laid on the roadbed via sleepers. The rail abdomen Rw is erected near the center of the rail bottom Rb and has a smaller width than the rail bottom Rb. The rail head portion Rh is provided at the upper end portion Rw2 of the rail abdomen Rw, and is wider than the rail abdomen Rw and smaller than the rail bottom Rb.

-Sound absorbing material-
As shown in FIG. 2, each of the sound absorbing materials 11 and 13 includes abdominal sound absorbing materials 11 a and 13 a that extend from the upper end portion Rw2 of the side surface Rw1 of the rail abdominal portion Rw to the center in the width direction of the upper surface Rb1 of the rail bottom portion Rb. The bottom sound absorbing materials 11b and 13b are provided separately from the lower surface Rb2 of the rail bottom Rb.

  The abdomen sound-absorbing materials 11a and 13a are made of thin-walled damping resin-made damping materials 111a and 131a attached to the inner surfaces of the soundproof covers 12 and 14, and thick-walled foamed resinous sound-absorbing materials 112a and 132a. Become. The bottom sound-absorbing materials 11b and 13b are composed of thin-walled vibration-damping resin damping materials 111b and 131b attached to the inner surfaces of the soundproof covers 12 and 14, and thick-walled foamed resinous sound-absorbing materials 112b and 132b. Become.

  In FIG. 2, the abdomen sound absorbing materials 11 a and 13 a are shown as a part of a rectangle cut off at the contact portion with the rail R. This is because the abdomen sound absorbing materials 11 a and 13 a are pressed to the rail R side and pushed. It is formed by being crushed (compressed). The thickness of the bottom sound-absorbing materials 11b and 13b is compressed to about ½ of the free thickness by being attached to the rail R.

-Soundproof cover-
As shown in FIG. 2, the soundproof covers 12 and 14 are inclined portions 12a and 14a extending from the upper end portion Rw2 of the side surface Rw1 of the rail belly portion Rw to the vicinity of the tip of the upper surface Rb1 of the rail bottom portion Rb, and the inclined portions 12a, The vertical portions 12b and 14b extend downward from the lower end of 14a along the side surface Rb3 of the rail bottom Rb, and the horizontal portion 12c extends from the lower ends of the vertical portions 12b and 14b to the center side of the rail R along the lower surface Rb2 of the rail bottom Rb. , 14c. The inclined portions 12a and 14a are an example of the “cover body” in the present invention.

  Here, in this embodiment, as shown in FIGS. 1 to 3, the end portions 12 d and 14 d of the inclined portions 12 a and 14 a of the soundproof covers 12 and 14 are connected to the end portions 12 d and 14 d in the rail extending direction. Bending parts 120 and 140 formed by being bent toward the side surface Rw1 of the abdominal part Rw are formed (simple bending process). The bent portions 120 and 140 are an example of the “side wall portion” in the present invention. These bent portions 120 and 140 allow ballast to enter from the gap between the inclined portions 12a and 14a of the soundproof covers 12 and 14 and the side surface Rw1 of the rail abdomen Rw during rail maintenance (for example, when the ballast cleaner passes). It is possible to suppress this.

  The bent portions 120 and 140 have a substantially triangular shape when viewed from the rail extending direction, and are disposed at positions that cover the upper halves of the abdomen sound absorbing materials 11a and 13a. The edges 120a, 140a of the bent portions 120, 140 are formed in a straight line so as to follow the shape of the side surface Rw1 of the rail abdomen Rw. Further, the end edges 120a, 140a of the bent portions 120, 140 and the side surface Rw1 of the rail abdomen Rw may or may not contact each other. However, when the edges 120a, 140a of the bent portions 120, 140 and the side surface Rw1 of the rail abdomen Rw are not in contact with each other, it is preferable that they are separated from the gap so that the ballast does not enter.

  As shown in FIG. 3, the bent portions 120 and 140 are bent toward the back side of the paper (in the direction of the rail abdomen Rw) with respect to the fold line a1 provided at the end portions 12d and 14d of the inclined portions 12a and 14a. Is formed. The fold line a1 extends in a direction inclined by a predetermined angle with respect to the rail extending direction (a direction along the lower left from the upper right in FIG. 3). In addition, when viewed from the direction (side) perpendicular to the rail extending direction, the bent portions 120 and 140 and the abdomen sound absorbing materials 11a and 13a are disposed at positions shifted in the rail extending direction, and overlap each other. It is arranged not to become.

  Further, as shown in FIG. 2, a slight gap is provided between the horizontal portions 12 c and 14 c of the soundproof covers 12 and 14. The end surfaces of the horizontal portions 12c and 14c of the soundproof covers 12 and 14 and the end surfaces of the bottom sound absorbing materials 11b and 13b are substantially flush with each other.

-Fixture-
As shown in FIG. 2, the fixture 4 is provided continuously to the horizontal portion 21 inserted below the lower surface Rb <b> 2 of the rail bottom portion Rb and the left end portion of the horizontal portion 21, and to the soundproof cover 12 of the first soundproof member 2. It has a first rising portion 22 to be applied, and a second rising portion 23 provided to be connected to the right end portion of the horizontal portion 21 and applied to the soundproof cover 14 of the second soundproof member 3. The fixture 4 is formed of a metal spring material or the like, and firmly fixes the soundproof members 2 and 3.

  The first rising portion 22 and the second rising portion 23 of the fixture 4 are formed symmetrically with respect to the rail R. In the free state, the first rising portion 22 and the second rising portion 23 are formed so that the interval is slightly narrower than in the installed state. Thereby, the 1st rising part 22 and the 2nd rising part 23 will have the spring property which urges the soundproof covers 12 and 14 in the direction which presses against the rail R.

  The horizontal portion 21 of the fixture 4 is applied to both the horizontal portion 12c of the soundproof cover 12 of the first soundproof member 2 and the horizontal portion 14c of the soundproof cover 14 of the second soundproof member 3 from below.

  The rising portions 22 and 23 of the fixture 4 have vertical portions 24 and 26 and inclined portions 25 and 27, respectively. The vertical portions 24 and 26 are connected to the horizontal portion 21 at a right angle and are in contact with the vertical portions 12 b and 14 b of the soundproof covers 12 and 14, respectively. The inclined portions 25 and 27 of the fixture 4 are connected to the vertical portions 24 and 26 and are in contact with the inclined portions 12a and 14a of the soundproof covers 12 and 14, respectively.

  The vertical portions 24 and 26 of the fixture 4 are substantially the same height as the vertical portions 12 b and 14 b of the soundproof covers 12 and 14. The inclined portions 25 and 27 of the fixture 4 are inclined along the inclined portions 12 a and 14 a of the soundproof covers 12 and 14.

  The vertical portions 24 and 26 of the fixture 4 are formed by pressing the vertical portions 12b and 14b of the soundproof covers 12 and 14 against the side surface Rb3 of the rail bottom portion Rb, thereby causing the vertical portions 12b and 14b of the soundproof covers 12 and 14 to be rail bottom portions. It is sandwiched between Rb. In addition, since the inclined portions 25 and 27 of the fixture 4 are disposed along the inclined portions 12a and 14a of the soundproof covers 12 and 14, the inclined portions 12a and 14a of the soundproof covers 12 and 14 are sound-absorbed by the abdomen. The materials 11a and 13a are pressed against the side surface Rw1 of the rail abdomen Rw and the upper surface Rb1 of the rail bottom Rb.

  In this way, the inclined portions 12a and 14a, the vertical portions 12b and 14b, and the horizontal portions 12c and 14c of the soundproof covers 12 and 14 are the inclined portions 25 and 27, the vertical portions 24 and 26, and the horizontal portions of the fixture 4, respectively. 21 is held.

  As described above, according to the soundproofing device for rails according to the present embodiment, the effects listed below can be obtained.

  In the present embodiment, as described above, the edges 120a and 140a of the bent portions 120 and 140 of the soundproof covers 12 and 14 are formed in a shape along the side surface Rw1 of the rail abdomen Rw. As a result, the end edges 120a, 140a of the bent portions 120, 140 of the soundproof covers 12, 14 and the side surface Rw1 of the rail abdomen Rw can be disposed close to each other, so that the inclined portions 12a, The gap between 14a and the side surface Rw1 of the rail abdomen Rw can be reduced (filled in the gap). As a result, at the time of maintenance of the rail R (for example, when the ballast cleaner passes), it is possible to prevent the ballast from entering from the gap between the inclined portions 12a and 14a of the soundproof covers 12 and 14 and the side surface Rw1 of the rail abdomen Rw. it can. Thereby, it can suppress that the soundproof covers 12 and 14 are damaged due to the ballast entering the gap between the inclined portions 12a and 14a of the soundproof covers 12 and 14 and the side surface Rw1 of the rail abdomen Rw. .

  In the present embodiment, as described above, the bent portions are formed by bending the end portions 12d and 14d in the rail extending direction of the inclined portions 12a and 14a of the soundproof covers 12 and 14 toward the side surface Rw1 of the rail abdomen Rw. 120 and 140 are formed. Accordingly, the inclined portions of the soundproof covers 12 and 14 can be easily obtained simply by bending the end portions 12d and 14d in the rail extending direction of the inclined portions 12a and 14a of the soundproof covers 12 and 14 toward the side surface Rw1 of the rail abdomen Rw. It is possible to suppress the ballast from entering through a gap between 12a, 14a and the side surface Rw1 of the rail abdomen Rw.

  In the present embodiment, as described above, the edges 120a and 140a of the bent portions 120 and 140 of the soundproof covers 12 and 14 are linearly formed along the side surface Rw1 of the rail abdomen Rw. As a result, the edges 120a, 140a of the bent portions 120, 140 are more likely to follow the shape of the side surface Rw1 of the rail abdomen Rw, so that the inclined portions 12a, 14a of the soundproof covers 12, 14 and the side surface Rw1 of the rail abdomen Rw Can be made smaller (fill the gap).

(First modification)
Next, a first modification will be described with reference to FIG. In the first modification, unlike the above-described embodiment (simple bending process) in which one bent portion is formed in the soundproof cover, the two bent portions (the first bent portion and the second bent portion) are formed in the soundproof cover. Part) is formed (two-step bending process).

  As shown in FIG. 4, a first bent portion 121 and a second bent portion 122 are formed adjacent to the end portion 12 d in the rail extending direction of the inclined portion 12 a of the soundproof cover 12 according to the first modification. Has been. The first bent part 121 and the second bent part 122 are examples of the “side wall part” in the present invention.

  The 1st bending part 121 is formed by bend | folding in the paper surface back side (rail abdominal part Rw direction) with respect to the crease | fold a1 provided in the edge part 12d of the inclination part 12a. The fold a1 extends in a direction inclined by a predetermined angle with respect to the rail extending direction (a direction along the lower left from the upper right in FIG. 4).

  The second bent portion 122 is formed by being bent toward the front side (the direction away from the rail abdomen Rw) with respect to the fold line a2 provided on the end side in the rail extending direction of the first bent portion 121. Has been. The crease a2 extends in a direction inclined by a predetermined angle with respect to the rail extending direction (a direction along the lower left from the upper right in FIG. 4). The fold line a2 and the fold line a1 are substantially parallel.

  The shape of the end edge 121a of the first bent portion 121 and the shape of the end edge 122a of the second bent portion 122 are linearly formed along the shape of the side surface Rw1 of the rail abdomen Rw. Further, the end edges 121a and 122a and the side surface Rw1 of the rail abdomen Rw may or may not contact each other. However, when the end edges 121a and 122a and the side surface Rw1 of the rail abdomen Rw are not in contact with each other, it is preferable that they are separated from the gap so that the ballast does not enter.

  Moreover, the 1st bending part 121 and the 2nd bending part 122, and the abdomen sound-absorbing material 11a, 13a are arrange | positioned in the position shifted | deviated to the rail extension direction, and are arrange | positioned so that it may not mutually overlap.

  By these first bent portion 121 and second bent portion 122, during the maintenance of the rail (for example, when the ballast cleaner passes), from the gap between the inclined portion 12a of the soundproof cover 12 and the side surface Rw1 of the rail abdomen Rw It is possible to suppress the ballast from entering.

  In the first modification, the example in which the first bent portion 121 and the second bent portion 122 are formed at the end 12d of the inclined portion 12a of the soundproof cover 12 in the rail extending direction has been described. A similar first bent portion and second bent portion are also formed at the end portion 14d of the inclined portion 14a of the soundproof cover 14 in the rail extending direction.

  As described above, according to the rail soundproofing device according to the first modification, the effects listed below can be obtained.

  In the first modification, as described above, the first bent portion 121 and the second bent portion 122 are provided on the end portions 12d and 12d in the rail extending direction of the inclined portions 12a and 14a of the soundproof covers 12 and 14, respectively. Provide. Thereby, even if a relatively small gap is formed between the end edge 121a of the first bent portion 121 and the side surface Rw1 of the rail abdomen Rw, the second bent portion 122 causes the soundproof covers 12 and 14 to be inclined. The gap between the portions 12a, 14a and the side surface Rw1 of the rail abdomen Rw can be made smaller (fill the gap). As a result, the ballast is less likely to enter the gap between the inclined portions 12a and 14a of the soundproof covers 12 and 14 and the side surface Rw1 of the rail abdomen Rw.

  The configurations and effects of the sound absorbing material, the soundproof cover, and the fixture according to the first modification are the same as those in the above embodiment.

(Second modification)
Next, a second modification will be described with reference to FIG. In the second modification, unlike the above-described embodiment (simple bending process) in which the edge of the bent portion of the soundproof cover is formed in a straight line, the edge of the bent portion is formed in a curved shape ( R processing) will be described.

  A bent portion 123 that is bent toward the side surface Rw1 of the rail abdomen Rw is formed at the end 12d in the rail extending direction of the inclined portion 12a of the soundproof cover 12 according to the second modification. The bent portion 123 is an example of the “side wall portion” in the present invention.

  The bent portion 123 is formed by bending the fold line a1 provided at the end 12d of the inclined portion 12a toward the back side of the paper (in the rail abdomen Rw direction). The fold a1 extends in a direction inclined by a predetermined angle with respect to the rail extending direction (a direction along the lower left from the upper right in FIG. 5).

  The edge 123a of the bent portion 123 is formed in a curved shape (R shape) so as to follow the shape of the side surface Rw1 of the rail abdomen Rw. Moreover, the edge 123a of the bending part 123 and the side surface Rw1 of the rail abdomen Rw may be in contact or may not be in contact. However, when the end edge 123a of the bent portion 123 and the side surface Rw1 of the rail abdomen Rw are not in contact with each other, it is preferable that they are separated from the gap so that the ballast does not enter.

  In addition, although the said 2nd modification demonstrated the example in which the bending part 123 which has the curved edge 123a was formed in the edge part 12d of the rail extension direction of the inclination part 12a of the soundproof cover 12, soundproofing A bent portion having a similar curved edge is also formed at the end portion 14d of the inclined portion 14a of the cover 14 in the rail extending direction.

  As described above, according to the rail soundproofing device according to the second modification, the effects listed below can be obtained.

  In the second modification, as described above, the end edge 123a of the bent portion 123 of the soundproof cover 12 is formed in a curved shape along the side surface Rw1 of the rail abdomen Rw. Thereby, since the edge 123a of the bending part 123 becomes easier to follow the shape of the side surface Rw1 of the rail abdomen Rw, the gap between the inclined parts 12a, 14a of the soundproof covers 12, 14 and the side surface Rw1 of the rail abdomen Rw is further increased. It can be made smaller (fill the gap).

  The configurations and effects of the sound absorbing material, the soundproof cover, and the fixture of the second modification are the same as those in the above embodiment.

-Other embodiments-
In addition, it should be thought that embodiment disclosed this time and a modification are illustrations in all the points, and are not restrictive. The scope of the present invention is shown not by the above description of the embodiments and modifications but by the scope of claims for patent, and includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the said embodiment and modification, although the bending part was shown as an example of the side wall part of a soundproof cover, this invention is not limited to this. In the present invention, a member that extends from the end portion toward the side surface of the rail abdomen is attached to the edge portion of the inclined portion of the soundproof cover using a fastening member such as a screw, an adhesive, or welding. It may be attached.

  Moreover, in the said embodiment and modification, although the inclination part was shown as an example of the cover main body of a soundproof cover, this invention is not limited to this. For example, the cover body of the soundproof cover may be a vertical portion formed vertically other than the inclined portion, or a curved portion curved in a direction away from or approaching the rail.

  Moreover, in the said embodiment and modification, although the example which forms one or two bending parts in the edge part of the rail extension direction of the inclination part of a soundproof cover was shown, this invention is not limited to this. In this invention, you may form three or more bending parts in the edge part of the rail extension direction of the inclination part of a soundproof cover.

  Moreover, in the said embodiment and the modification, although the example which forms the edge of the bending part of a soundproof cover in linear form or curve shape was shown, this invention is not limited to this. For example, the shape of the edge of the bent portion of the soundproof cover may be a shape other than a straight shape or a curved shape as long as it conforms to the shape of the side surface of the rail abdomen.

  Moreover, although the example which arrange | positions the bending part of a soundproof cover in the position which covers the upper half of an abdominal sound-absorbing material was shown in the said embodiment and modification, this invention is not limited to this. For example, you may arrange | position the bending part of a soundproof cover in the position which covers the whole abdominal sound-absorbing material.

  INDUSTRIAL APPLICABILITY The present invention can be used for a rail soundproofing device, and more specifically, can be used for a rail soundproofing device that prevents noise generated from the rail.

DESCRIPTION OF SYMBOLS 1 Rail sound-proof device 2 1st sound-proof member 3 2nd sound-proof member 4 Fixture 11, 13 Sound-absorbing material 11a, 13a Abdominal sound-absorbing material 11b, 13b Bottom sound-absorbing material 12, 14 Sound-proof cover 12a, 14a Inclined part (cover main body)
12b, 14b Vertical portion 12c, 14c Horizontal portion 12d, 14d End portion 21 Horizontal portion 22 First rising portion 23 Second rising portion 24, 26 Vertical portion 120, 140 Bent portion (side wall portion)
121 1st bent part (side wall part)
122 Second bent part (side wall part)
123 Bent part (side wall part)
120a, 121a, 122a, 123a, 140a Edge Rh Rail head Rw Rail abdomen Rb Rail bottom

Claims (5)

A soundproofing device for a rail comprising a sound absorbing material and a soundproofing cover for preventing noise generated from a rail having a rail bottom, a rail abdomen erected on the rail bottom, and a rail head provided at an upper end of the rail abdomen In
The sound absorbing material is provided on a side surface of the rail abdomen,
The soundproof cover includes a cover main body that covers the sound absorbing material, and a side wall that extends from an end of the cover main body in the rail extending direction toward a side surface of the rail abdomen,
The cover body has an inclined portion extending inclinedly from the upper end portion of the side surface of the rail belly portion to the upper surface of the rail bottom portion,
The side wall portion has a bent portion that is bent in a direction inclined at a predetermined angle with respect to the rail extending direction toward the side surface of the rail abdomen at the end of the inclined portion in the rail extending direction,
Edge of the bent portion, soundproofing rails, characterized in Rukoto to have a shape along the side surface of the rail abdomen. The soundproofing device for a rail according to claim 1,
The side wall portion of the soundproof cover includes a fold extending in a direction inclined by a predetermined angle with respect to the rail extending direction,
The bent portion, soundproofing rails, characterized in Rukoto a folded along said fold line. The rail soundproofing device according to claim 1 or 2,
Before Kiori song part, soundproofing rails and having a substantially triangular shape when viewed from the rail extending direction. The soundproofing device for a rail according to claim 1 or 2 ,
Before Kiorikyoku portion, a first bent portion which the end of the rail extending direction of the cover body is folded towards the side surface of the rail abdominal, the end of the first bent portion said rails A rail soundproofing device comprising: a second bent portion bent along the extending direction . In the soundproofing device for rails according to any one of claims 1 to 4,
An end edge of the bent portion is formed in a linear shape or a curved shape along a side surface of the rail belly portion .

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