JPWO2013058082A1 - Rail soundproofing device - Google Patents

Abstract

There is no need for tools for fixing bolts and screws. Therefore, it is possible to improve the labor and complexity of the construction, and there is a problem that the projecting part is less than the rails and obstructs during track maintenance. Providing a soundproofing device for rails that have been eliminated. The rail soundproofing device 1 includes a first soundproofing member 2, a second soundproofing member 3, and a fixture 7. The fixture 7 includes a first fixing member 8 and a second fixing member 9. The first fixing member 8 has a horizontal portion 41 that is inserted below the bottom surface of the rail bottom portion, and a rising portion 42 that is connected to the end portion of the horizontal portion 41 and is applied to the sound insulating cover 13 of the first sound insulating member 2. doing. The second fixing member 9 has a horizontal portion 51 that is inserted below the bottom surface of the rail bottom portion, and a rising portion 52 that is connected to the end portion of the horizontal portion 51 and that is applied to the sound insulating cover 16 of the second sound insulating member. ing. The first fixing member 8 and the second fixing member 9 are detachably fitted.

Description

  The present invention relates to a rail soundproofing device, and more particularly to a rail soundproofing device provided with a fixture for fixing a soundproofing member to the rail.

  Conventionally, as a soundproof device for a rail provided with a fixture for fixing the soundproof member to the rail, a first soundproof member having a sound absorbing mat and a sound insulation cover and attached to a required portion of the rail surface from one side surface; There has been proposed a sound-absorbing mat and a sound-insulating cover, which include a second sound-insulating member attached to a required portion of the rail surface from the other side surface, and a fixture for fixing both sound-insulating members.

  In Patent Documents 1 and 2, the fixture is composed of two fixing members, and these fixing members are overlapped on the side of the lower surface of the rail bottom and fixed with bolts. Moreover, in the thing of patent document 3, a fixing tool is made to fix with a screw.

JP 2007-224700 A JP 2006-2442 A JP 2008-95408 A

  In the thing of the said patent document 3, the tool for screw fixation was required and there existed a problem that workability was not good. In Patent Documents 1 and 2, since the bolt is fixed, the workability is better than the screw fixing, but a tool is required for the construction, and the overlapping portion for fixing the bolt is more tensioned than the rail. There was a problem of getting in the way during track maintenance.

  The object of the present invention is not to require a bolt fixing tool or a screw fixing tool. Therefore, it is possible to improve the labor and complexity of the construction, reduce the portion protruding from the rail, and at the time of track maintenance. The object is to provide a rail soundproofing device that eliminates the problem of obstruction.

  The rail soundproofing device according to the present invention has a sound absorbing mat and a sound insulating cover, has a first sound insulating member attached to a required portion of the rail surface from one side, a sound absorbing mat and a sound insulating cover, In a rail soundproofing device comprising a second soundproofing member attached to the portion from the other side surface and a fixing tool for fixing both soundproofing members, the fixing tool includes a first fixing member and a second fixing member. The first fixing member has a horizontal portion that is inserted below the bottom surface of the rail bottom portion, and a rising portion that is provided continuously to the end portion of the horizontal portion and that is applied to the sound insulating cover of one of the sound insulating members. The two fixing members have a horizontal portion that is inserted below the horizontal portion of the first fixing member, and a rising portion that is connected to the end portion of the horizontal portion and is applied to the sound insulation cover of the other soundproofing member. , At least one convex portion is provided on one of the first and second fixing members, and a concave portion fitted to the convex portion is provided on the other fixing member, and the first fixing member and the second fixing member are provided. The member is characterized in that the horizontal portions are overlapped and detachably fitted.

  In order to fix the two soundproof members using the two fixing members, it is usually necessary to form the tightened portions on the respective fixed members and to connect the tightened portions with bolts. However, each of the fixtures has a shape having a horizontal portion and a rising portion, and the first fixing member and the second fixing member are detachably fitted to each other, so that fastening with bolts and fixing therefor are performed. The tightened part of the tool can be eliminated. This eliminates the need for tools for fixing bolts and screws, thus improving the labor and complexity of construction and reducing the overhanging part of the rail, which can be a hindrance during track maintenance. This problem can be solved.

  The portion protruding from the rail is preferably within 10 mm from the bottom of the rail. This condition can be easily satisfied by fixing using the two fixing tools.

  In order to obtain a configuration that is detachably fitted, for example, at least one convex portion is provided on one of the first and second fixing members (the horizontal portion and / or the rising portion thereof), and on the other side, What is necessary is just to make it provide the recessed part fitted by this convex part. The number and shape of the convex portions and concave portions are not particularly limited. For example, one convex portion on one side and one concave portion on the other side may be provided, and two convex portions on one side and two on the other side. A concave portion may be provided, one convex portion and one concave portion on one side, and one concave portion and one convex portion on the other side. Also, one may be corrugated, sawtooth, etc., and the other may be corrugated, sawtooth, etc. corresponding thereto. Moreover, the recessed part does not need to have the bottom face contact | abutted to the front end surface of a convex part, and forms, such as a hole and a slit, may be sufficient as it.

  It is preferable that at least one of the first and second fixing members is provided with a bent portion that is provided at an end of the horizontal portion on the side opposite to the rising portion and restricts movement of the fixing member toward the rising portion.

  According to the fixing member provided with the bent portion, the soundproof member can be sandwiched between the rising portion and the bent portion from both sides of the rail bottom surface portion, so that it is possible to fix to some extent without the other fixing member. Further, the combination with the other fixing member makes it possible to fix more firmly.

  The bent portion is preferably provided on the second fixing member and is in contact with the rising portion of the first fixing member from the outside. If it does in this way, the movement of the direction orthogonal to the rail of both the 1st and 2nd fixing members will be prevented, and fixation will become firm.

  The first convex portion of the at least one convex portion is provided on the outer surface of the rising portion of the first fixing member, and the first convex portion is fitted to the bent portion of the second fixing member with the first convex portion. It is preferable that a recess is provided. If it does in this way, in addition to the action of preventing the movement of each fixing member in the direction orthogonal to the rail by the bent portion, it is orthogonal to the rail of each fixing member by fitting the first convex portion and the first concave portion. An effect of preventing the movement of the direction is obtained, and the fixing becomes stronger.

  A second convex portion of the at least one convex portion is provided so as to protrude in a horizontal direction from an end portion of the horizontal portion of the first fixing member on the side opposite to the rising portion, and is fitted to the second convex portion. It is preferable that the 2nd recessed part is provided in the lower end part of the standing | starting-up part of a 2nd fixing member. If it does in this way, relative fitting of the length direction of the rail of each fixing member will be prevented reliably by each fitting of two convex parts and two concave parts, and positioning will also be performed reliably.

  In the method of attaching the rail soundproofing device of the above (Claim 5) in which the fitting of the second convex portion and the second concave portion is provided to the rail, the horizontal portion of the first fixing member is attached from one side of the rail. A step of installing the first fixing member by inserting it below the lower surface of the bottom of the rail, and inserting the horizontal portion of the second fixing member from the other side of the rail to the lower side of the horizontal portion of the first fixing member. Are fitted into the second convex portion of the first fixing member, and a gap is formed between the end of the horizontal portion of the first fixing member on the side opposite to the rising portion and the end of the second fixing member on the side of the rising portion. There is no step, and the step of installing the second fixing member so that there is a gap between the end portion on the rising portion side of the horizontal portion of the first fixing member and the end portion on the bent portion side of the horizontal portion of the second fixing member. Using a rod-shaped tool, with one end of the tool as a fulcrum and the other end of the tool as a power point The middle part of the tool is brought into contact with the end of the horizontal part of the second fixing member on the bent part side from below, and the force is applied upward to the force point, so that the rising part of the horizontal part of the first fixing member And a step of eliminating a gap between the end portion of the second fixing member and the end portion on the bent portion side of the second fixing member.

  A first convex portion of the at least one convex portion is provided on a horizontal portion of one of the first and second fixing members, and on the horizontal portion of the other fixing member, on the first convex portion. A first recess to be fitted may be provided.

  In this case, the horizontal portion of one of the first and second fixing members is guided to the other horizontal portion at the time of overlapping with the other horizontal portion, and the other horizontal portion rail in the length direction after the overlapping is guided. It is preferable that a guide portion for restricting movement is provided.

  If it does in this way, when fitting the 1st fixing member and the 2nd fixing member, a gap will be prevented by being guided to a guide part, and fitting will become easy, and a guide part and a horizontal part will be easy to fit. By fitting, the first fixing member and the second fixing member are more difficult to separate.

  More preferably, either one of the first and second fixing members is provided with a convex portion, and the other horizontal portion is provided with a concave portion fitted to the convex portion, and the first fixing portion is fixed. The member is provided with a bent portion and a guide portion. If it does in this way, while fitting with a convex part and a crevice, while the relative movement of both fixed members is controlled, the movement of the 1st fixed member in the rail width direction is controlled by the bent part, and the 1st fixed The movement of the second fixing member in the rail length direction is suppressed by the guide portion of the member, the coupling between the first fixing member and the second fixing member is strengthened, and the soundproof member is extremely firmly fixed.

  The sound insulation cover may be formed in the shape of a flat plate that extends from the rail abdomen side top end to the rail bottom top end, and the sound insulation cover is inclined from the rail abdomen top end to the rail bottom top end. A horizontal portion extending from the lower end of the inclined portion to the rail bottom portion side surface, and a horizontal portion extending from the vertical lower end to the bottom surface of the rail bottom portion, and the sound absorbing mat is provided on both the inclined portion and the horizontal portion. May have been. The former has the advantage that the structure of the soundproofing member can be simplified, and the latter has the advantage that the soundproofing effect can be further improved by the sound absorbing mat and the sound insulating cover provided on the lower surface of the rail bottom. Have.

  It is preferable that the vertical portion of the sound insulation cover is provided with a convex portion for preventing the displacement of each fixing member in the rail direction. If it does in this way, the fixture will prevent the shift | offset | difference of the length direction of a rail reliably.

  The sound absorbing mat is preferably made of at least one of a fibrous sound absorbing material, a resin foam-like sound absorbing material, an open-cell foam sound absorbing material, an inorganic porous sound absorbing material, and an inorganic particle sintered sound absorbing material. In view of the sound absorbing effect and handleability, fibrous sound absorbing materials such as glass wool and rock wool, and resin foam sound absorbing materials such as urethane foam, EPDM foam, and polyethylene foam are more preferable.

  The sound insulation cover is preferably made of at least one of a metal plate, a resin plate, and an inorganic plate. In view of workability, long-term durability, and mechanical strength, it is more preferable to use a corrosion-resistant steel plate such as a galvalume steel plate or a hot dip zinc-aluminum-magnesium alloy plated steel plate.

The surface density and thickness of the sound insulation cover are not particularly limited, but the surface density is preferably 0.5 to 15 kg / m ² and the thickness is preferably about 0.1 to 2.0 mm.

  The length of the sound insulation cover is not particularly limited. However, when one sound insulation cover is installed for each sleeper interval, the length of the sound insulation cover is 600 for a site having a general sleeper interval of 550 to 600 mm. ˜650 mm is preferred. Variations in sleeper spacing between actual construction sites are about 50 mm. By setting 600 to 650 mm for a site of 550 to 600 mm, it is possible to construct without gaps by overlapping adjacent covers. . In view of overlapping the sound insulation covers in this way, the thickness of the sound insulation cover is preferably about 0.1 to 2.0 mm as described above.

  The position where the upper peripheral edge of the sound insulation cover is in contact with the rail surface is not particularly limited as long as it does not reach the construction limit provided in the horizontal direction at a position 38 mm below the rail top surface, but below the rail top surface. A position in contact with the rail surface at a position of 42 to 62 mm is preferable.

  A vibration damping sheet may be interposed between the sound absorbing mat and the sound insulation cover. In this case, the vibration damping sheet preferably has a loss coefficient of 0.1 or more. For example, the vibration damping sheet has a two-layer structure including a vibration damping resin layer and a constraining layer.

  According to the rail soundproofing device of the present invention, the first fixing member is connected to the horizontal portion inserted below the bottom surface of the rail bottom portion and the end portion of the horizontal portion and is applied to the soundproof cover of one of the soundproof members. The second fixing member has a horizontal portion that is inserted below the bottom surface of the rail bottom portion, and a rising portion that is connected to the end portion of the horizontal portion and is applied to the sound insulation cover of the other soundproof member. Since the horizontal portion of the first fixing member and the horizontal portion of the second fixing member are overlapped and detachably fitted, no tools for bolt fixing or screw fixing are required, so construction This reduces the trouble and complexity of the rails, and reduces the part that protrudes from the rails, eliminating the problem of obstructing track maintenance.

FIG. 1 is a sectional view showing a first embodiment of a rail soundproofing device according to the present invention. FIG. 2 is a perspective view showing a first fixing member of the fixture of the rail soundproofing device according to the first embodiment. FIG. 3 is a perspective view showing a second fixing member of the fixture of the rail soundproofing device according to the first embodiment. FIG. 4 is a view showing a method of attaching the rail soundproofing device of the first embodiment. FIG. 5 is a side view showing a preferred embodiment of a sound insulation cover in the rail sound insulation device of the first embodiment. FIG. 6 is a perspective view showing a preferred embodiment of a sound insulation cover in the rail sound insulation device of the first embodiment. FIG. 7 is a sectional view showing a second embodiment of the rail soundproofing device according to the present invention. FIG. 8: is a perspective view which shows the 1st fixing member of the fixing tool of the soundproofing device of the rail of 2nd Embodiment. FIG. 9 is a perspective view showing a second fixing member of the fixture of the rail soundproofing device of the second embodiment. FIG. 10 is a cross-sectional view showing a reference example of a rail soundproofing device according to the present invention. FIG. 11 is a perspective view showing a fixture of a rail soundproof device of a reference example.

(1) Rail soundproofing device
(2) First soundproof member
(3) Second soundproof member
(4) Fixing tool
(5) First fixing member
(6) Second fixing member
(7) Fixing tool
(8) First fixing member
(9) Second fixing member
(11) (14) Sound absorbing mat
(13) (16) Sound insulation cover
(13a) (16a) Inclined part
(13b) (16b) Vertical section
(13c) (16c) Horizontal part
(21) Horizontal part
(22) Rise
(23) Bending part
(24) Convex part (first convex part)
(25) Guide section
(31) Horizontal part
(32) Rise
(34) Through hole (first recess)
(41) Horizontal section
(42) Rise
(44) Convex part (second convex part)
(45) Convex part (first convex part)
(51) Horizontal part
(52) Rise
(53) Bending part
(54) Through hole (second recess)
(55) Through hole (first recess)
(61) (62) (63) Convex

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the upper, lower, left, and right refer to the upper, lower, left, and right in FIG.

  FIG. 1 shows a rail soundproofing device according to a first embodiment of the present invention. The rail soundproofing device (1) is attached to a required portion of the rail (R) surface from the left (one side). The first soundproof member (2), the second soundproof member (3) attached from the right side (the other side) to the required portion of the rail (R) surface, and both soundproof members (2) and (3) are fixed. And a fixture (7) including a first fixing member (8) and a second fixing member (9).

  Each soundproof member (2) (3) is made up of sound absorbing mats (11) (14), damping sheets (12) (15) and sound insulation covers (13) (16) that are layered in order from the inside. It is configured.

  Each soundproof member (2) (3) is made up of sound absorbing mats (11) (14), damping sheets (12) (15) and sound insulation covers (13) (16) that are layered in order from the inside. It is configured.

  Each sound absorbing mat (11) (14) is abdominal sound absorbing mat (11a) (14a) passed from the middle of the rail abdomen (Rw) side height to the center of the rail bottom (Rb) upper surface width direction, the rail bottom (Rb) The bottom sound absorbing mats (11b) and (14b) are provided separately on the lower surface from below. In the same figure, the abdomen sound-absorbing mat (11a) (14a) is shown as being cut out from the rectangle at the contact portion with the rail (R), not the rectangular in cross section. ) To be compressed so as to be compressed. The thickness of the bottom sound absorbing mats (11b) and (14b) is compressed to about ½ of the free thickness by being attached to the rail (R).

  The damping sheets (12) and (15) have the same size (area) as the sound absorbing mats (11) and (14), and the abdominal damping sheets (12a) and (15a) and the bottom damping sheets (12b) (15b).

  The sound insulation covers (13) and (16) are inclined portions (13a) and (16a) extending from near the upper end of the rail abdomen (Rw) side surface height to the bottom of the rail bottom portion (Rb) and the inclined portion (13a). (16a) The vertical part (13b) (16b) that extends downward along the side of the rail bottom (Rb) from the lower end, and the bottom of the rail from the lower end of the vertical part (13b) (16b) to the bottom of the rail bottom (Rb) It consists of horizontal parts (13c) and (16c) extending to the center side.

  A slight gap is provided between the horizontal portions (13c) and (16c) of the sound insulation covers (13) and (16), and the horizontal portions (13c and 16c) of the sound insulation covers (13) and (16) are provided. The end surfaces, the end surfaces of the bottom sound absorbing mats (11b) and (14b), and the end surfaces of the bottom vibration damping sheets (12b) and (15b) are substantially flush.

  In this embodiment, the first fixing member (8) is first installed from the right side, and then the second fixing member (9) is installed from the left side.

  As shown in FIG. 2, the first fixing member (8) is provided continuously with the horizontal portion (41) inserted below the bottom surface of the rail bottom (Rb) and the right end portion of the horizontal portion (41). A rising portion (42) applied to the sound insulating cover (16) of the sound insulating member (3).

  The horizontal part (41) is located below both the horizontal part (13c) of the sound insulation cover (13) of the first sound insulation member (2) and the horizontal part (16c) of the sound insulation cover (16) of the second sound insulation member (3). It is assigned from.

  The rising portion (42) includes a vertical portion (42a) overlaid on the vertical portion (16b) of the sound insulation cover (16) and an inclined portion (42b) overlaid on the inclined portion (16a) of the sound insulation cover (16). ). The upper end position of the inclined portion (42b) is substantially equal to the upper end position of the abdominal sound absorbing mat (14a) of the second soundproof member (3).

  As shown in FIG. 3, the second fixing member (9) is connected to the horizontal portion (51) inserted below the bottom surface of the rail bottom portion (Rb) and the right end portion of the horizontal portion (51). A rising portion (52) applied to the sound insulating cover (13) of the sound insulating member (2).

  The horizontal portion (51) is overlapped with the horizontal portion (41) of the first fixing member (8) from below. The rising portion (52) includes a vertical portion (52a) superimposed on the vertical portion (13b) of the sound insulating cover (13) and an inclined portion (52b) superimposed on the inclined portion (13a) of the sound insulating cover (13). ). The upper end position of the inclined part (52b) is substantially equal to the upper end position of the abdomen sound absorbing mat (11a) of the first soundproof member (2).

  The second fixing member (9) is provided at the right end of the horizontal portion (51) (the end on the anti-rising portion side), and the vertical portion (42a) of the rising portion (42) of the first fixing member (8). Is provided with a bent portion (53) in contact with the outside from the outside. The upper end portion of the bent portion (53) is formed to be bent outward. The upper end position of the bent part (53) is not more than the height of the rail bottom part (Rb). Since the upper end position of the bent part (53) is less than the height of the rail bottom part (Rb), when installing the second fixing member (9) from the left side of FIG. 1, the right side of the rail (R) It is easy to move to the (back side), and installation work can be easily performed.

  At the left end portion of the horizontal portion (41) of the first fixing member (8), a narrow convex portion (second convex portion) (44) protruding in the horizontal direction is provided. At the lower end of the vertical portion (52a) of the second fixing member (9), there is a rectangular through hole (second concave portion) (54) fitted to the convex portion (44) of the first fixing member (8). Is provided.

  The vertical portion (42a) of the rising portion (42) of the first fixing member (8) is provided with a substantially hemispherical convex portion (first convex portion) (45). The bent portion (53) of the second fixing member (9) is provided with a circular through hole (first concave portion) (55) fitted into the substantially hemispherical convex portion (45). Thus, the first fixing member (8) and the second fixing member (9) can be detached by fitting the two convex portions (44) (45) and the two through holes (54) (55). Are fitted together.

  The horizontal portion (41) of the first fixing member (8) is made of rubber that abuts across the horizontal portions (13c) and (16c) of the sound insulation covers (13) and (16) of both soundproof members (2) and (3). The cushion part (46) is provided. Further, the inclined portion (42b) of the rising portion (42) of the first fixing member (8) is made of rubber that comes into contact with the upper portion of the inclined portion (16a) of the sound insulation cover (16) of the second soundproof member (3). The cushion part (47) is provided. A rubber cushion abutting on the upper part of the inclined portion (13a) of the sound insulating cover (13) of the first soundproof member (2) is formed on the inclined portion (52b) of the rising portion (52) of the second fixing member (9). A portion (57) is provided.

  Each damping sheet (12) (15) is overlaid on the surface of the sound-absorbing mat (11) (14) and the damping resin layer (17) (19) bonded to the back of the sound-insulating cover (13) (16). It consists of steel plates (18) and (20) having a thickness of 0.27 mm as constraining layers bonded to the damping resin layers (17) and (19).

  According to the rail soundproofing device (1) of the first embodiment, the first fixing member (8) and the second fixing member (9) for fixing the soundproofing members (2) and (3) are coupled by fitting. Therefore, a tool for bolt fixing and screw fixing is not required, and therefore the labor and complexity of construction can be improved. Further, the bent portion (53) of the second fixing member (9) not only prevents the second fixing member (9) from moving to the left, but also moves the first fixing member (8) to the right. It also prevents it from coming off.

  In the first embodiment, the projection (44) of the horizontal portion (41) of the first fixing member (8) and the corresponding through-hole (54) of the vertical portion (52a) of the second fixing member (9). Can be omitted. In this case, the left end surface of the horizontal portion (41) of the first fixing member (8) abuts on the vertical portion (52a) of the second fixing member (9), and in this state, the first fixing member (8) rises. The convex part (45) of the part (42) and the through hole (55) of the bent part (53) of the second fixing member (9) are fitted together.

  FIG. 4 shows a method of attaching the rail soundproofing device (1) of the first embodiment to the rail (R).

  In order to attach the rail soundproofing device (1) of the first embodiment to the rail (R), first, as shown in FIG. 4 (a), the sound absorbing mats (11b) ( 14b) Confirm that the bottom surface of the rail (Rb) is in contact with the bottom surface of the rail (Rb) and insert the horizontal portion (41) of the first fixing member (8) from the right side of the rail (R) to the bottom of the bottom surface of the rail (Rb). The first fixing member (8) is installed. By applying the horizontal portion (41) of the first fixing member (8) to the bottom surface of the rail bottom (Rb), the first fixing member (8) is almost the same as when the installation is completed, as shown in FIG. 4 (b). Installed in a state. Next, the second fixing member (9) is installed. At this time, the second fixing member (9) is folded between the horizontal portions (41) and (51) so that the bent portion (53) does not interfere with the horizontal portion (41) of the first fixing member (8). The rail bottom portion (Rb) is inserted below the lower surface so that there is a gap corresponding to the height of the bent portion (53). Then, the through hole (second concave portion) (54) of the second fixing member (9) is fitted into the convex portion (first convex portion) (44) of the first fixing member (8). As shown in FIG. 4 (c), in this state, the middle portion of the bent portion (53) of the second fixing member (9) is usually placed at the right end of the horizontal portion (41) of the first fixing member (8). Interferes with each other and cannot be fitted together. Therefore, between the left end portion (end portion on the upright side) of the horizontal portion (41) of the first fixing member (8) and the left end portion (end portion on the rising portion side) of the second fixing member (9). Although there is no gap, the right end portion (the end portion on the rising portion side) of the horizontal portion 41 of the first fixing member 8 and the right end portion (the end portion on the anti-rising portion side) of the second fixing member 9 There is a gap between the two. Therefore, using the rod-shaped tool (60), the left end side (60a) of the tool (60) is the fulcrum, the right end side (60b) of the tool (60) is the power point, and the middle part of the tool (60) ( 60c) is brought into contact with the right end part (end part on the bent part side) of the horizontal part (51) of the second fixing member (9) from the lower side, and an upward force is applied to the right end side (60b) (power point). By doing so, the clearance gap between the right end part of the horizontal part (41) of a 1st fixing member (8) and the right end part of a 2nd fixing member (9) is eliminated. By doing in this way, as shown in FIG.4 (d), the convex part (1st convex part) (45) of a 1st fixing member (8) and the through-hole (1st of a 2nd fixing member (9)) 1) (55) and the first fixing member (8) and the second fixing member (9) are firmly coupled to each other, and the rail soundproofing device (1) may be disengaged from the rail (R). It is attached to the rail (R) so that there is no.

  In the rail soundproofing device (1) of the first embodiment, as shown in FIG. 5, a sound insulation cover (13) is used to prevent the rail (R) from moving in the length direction of the fixture (7). In addition, it is preferable to provide the convex portion (61) so as to sandwich the fixture (7) from both sides in the length direction of the rail (R). The convex portion may be a convex portion (61) having a shape obtained by cutting a hemisphere in half as shown in FIG. 6 (a), and as shown in FIG. 6 (b), the convex portion having a truncated cone shape. (62) may be sufficient, and hemispherical convex part (63) may be sufficient as shown in FIG.6 (c). In the case of the convex part (61) in which the hemisphere is cut in half, as shown in FIG. 5, the cut surface is formed to face the fixture (7).

  FIG. 7 shows a rail soundproofing device according to a second embodiment of the present invention. The rail soundproofing device (1) is attached to a required portion of the rail (R) surface from the left (one side). The first soundproof member (2), the second soundproof member (3) attached from the right side (the other side) to the required portion of the rail (R) surface, and both soundproof members (2) and (3) are fixed. And a fixture (4) including a first fixing member (5) and a second fixing member (6).

  Each of the soundproofing members (2) and (3) is the same as that of the first embodiment, and the same reference numerals as those of the first embodiment are given and description thereof is omitted.

  As shown in FIG. 8, the first fixing member (5) is provided continuously with the horizontal portion (21) inserted below the bottom surface of the rail bottom (Rb) and the left end portion of the horizontal portion (21). And a rising portion (22) applied to the inclined portion (13a) of the sound insulating cover (13) of the sound insulating member (2). The horizontal part (21) is located below both the horizontal part (13c) of the sound insulation cover (13) of the first sound insulation member (2) and the horizontal part (16c) of the sound insulation cover (16) of the second sound insulation member (3). It is assigned from. The upper end position of the rising portion (22) is substantially equal to the upper end position of the abdominal sound absorbing mat (11a) of the first soundproof member (2).

  As shown in FIG. 9, the second fixing member (6) is connected to the horizontal part (31) inserted below the bottom surface of the rail bottom part (Rb) and the right end part of the horizontal part (31). And a rising portion (32) applied to the inclined portion (16a) of the sound insulating cover (16) of the sound insulating member (2). The horizontal portion (31) is overlapped with the horizontal portion (21) of the first fixing member (5) from below. The upper end position of the rising portion (32) is substantially equal to the upper end position of the abdomen sound absorbing mat (14a) of the second soundproof member (3).

  The first fixing member (5) is provided at the right end of the horizontal portion (21) (the end on the anti-rising portion side) and moves to the left (rising portion side) of the first fixing member (5). A bent portion (23) to be regulated is provided. The upper end position of the bent part (23) is not more than the height of the rail bottom part (Rb). The first fixing member (5) is installed from the left side of FIG. 7. At this time, the upper end position of the bent portion (23) is set to be equal to or less than the height of the rail bottom portion (Rb). It is easy to move to the right side (back side), and installation work can be easily performed.

  Near the left end of the lower surface of the horizontal portion (21) of the first fixing member (5), there is a convex portion (first convex portion) (24) that is square and decreases in height toward the right. It has been. The horizontal portion (31) of the second fixing member (6) is provided with a rectangular through hole (first concave portion) (34) that fits into the convex portion (24) of the first fixing member (5). Yes. The first fixing member (5) and the second fixing member (6) are detachably fitted to each other by fitting the convex portions (24) and the through holes (34).

  A guide portion (25) is provided at the right end of the horizontal portion (21) of the first fixing member (5) along both edges of the horizontal portion (21). The guide part (25) is composed of opposing walls (25a) provided so as to protrude downward on both edges of the horizontal part (21), and the distance between the opposing walls (25a) is the horizontal of the second fixing member (6). It is made almost equal to the part (31). Thus, when the horizontal portion (21) of the first fixing member (5) and the horizontal portion (31) of the second fixing member (6) are overlapped, the horizontal portion (31) of the second fixing member (6) is Guided by the guide portion (25) of the first fixing member (5) and prevented from shifting, and after overlapping, the horizontal portion (31) of the second fixing member (6) moves in the rail length direction. Be regulated.

  The horizontal portion (21) of the first fixing member (5) is made of rubber that abuts across the horizontal portions (13c) and (16c) of the sound insulation covers (13) and (16) of both soundproof members (2) and (3). The cushion part (26) is provided. Further, the rising portion (22) of the first fixing member (5) has a rubber cushion portion (27) that contacts the upper portion of the inclined portion (13a) of the sound insulation cover (13) of the first soundproof member (2). Is provided. The rising portion (32) of the second fixing member (6) is provided with a rubber cushion portion (37) that comes into contact with the upper portion of the inclined portion (16a) of the sound insulation cover (16) of the second soundproof member (2). It has been.

  According to the rail soundproofing device (1) of the second embodiment, the first fixing member (5) and the second fixing member (6) for fixing the soundproofing members (2) and (3) are coupled by fitting. Therefore, a tool for bolt fixing and screw fixing is not required, and therefore the labor and complexity of construction can be improved. In order to detachably fit the first fixing member (5) and the second fixing member (6), the convex portion (24) of the horizontal portion (21) of the first fixing member (5) and the second fixing member are fixed. It is not limited to the fitting of the horizontal part (31) of the member (6) with the through hole (recessed part) (34), but a concave part is provided in the horizontal part (21) of the first fixing member (5), A convex part may be provided in the upper surface of the horizontal part (31) of a 2nd fixing member (6), and the number and shape of a convex part and a through-hole (concave part) may be changed.

  The bent portion (23) and the guide portion (25) are provided on the first fixing member (5), but the guide portion (25) of the first fixing member (5) is eliminated and the guide portion is 2 may be provided on the fixing member (6), or the guide portion (25) of the first fixing member (5) may be eliminated, and a bent portion may also be provided on the second fixing member (6). . Further, the fitting of the convex portion (24) of the horizontal portion (21) of the first fixing member (5) and the through hole (concave portion) (34) of the horizontal portion (31) of the second fixing member (6) is eliminated. Thus, the first fixing member (5) and the second fixing member (6) are simply fitted together with the guide portion (25) of the first fixing member (5) and the horizontal portion (31) of the second fixing member (6). ) May be combined with each other.

  In the above, the sound absorbing mat (11) (14) may be composed only of the abdominal sound absorbing mat (11a) (14a), and in this case, the sound insulating cover includes the rail abdomen side surface upper end and the rail bottom upper surface tip. It may be formed in the shape of a flat plate that has been passed to.

  In the above, the vibration damping sheets (12) and (15) enhance the soundproofing effect by suppressing the vibration of the sound insulation covers (13) and (16). (11a) (14a) and bottom sound absorbing mat (11b) (14b) separately provided sound absorbing mat (11) (14), and sound insulation cover (13) (16) covering these, excellent Soundproof performance can be achieved.

  FIG. 10 shows a reference example when simplifying the rail soundproofing device of the embodiment. The soundproofing device (10) for this rail has a first soundproofing member (2) attached to the required part of the surface of the rail (R) from the left (one side), and a right part of the required part of the surface of the rail (R). A second soundproofing member (3) attached from (the other side face) and a fixture (70) for fixing both the soundproofing members (2) and (3) are provided.

  Each of the soundproofing members (2) and (3) is the same as that in the above embodiment, and the same reference numerals as those in the above embodiment are given and the description thereof is omitted.

  As shown in FIG. 11, the fixing member (70) is connected to the horizontal portion (71) inserted below the bottom surface of the rail bottom portion (Rb) and the left end portion of the horizontal portion (71), and is provided as a first soundproof member. (2) The first rising portion (72) applied to the inclined portion (13a) of the sound insulation cover (13) and the right end portion of the horizontal portion (71) are provided to connect the second soundproof member (3). A second rising portion (73) applied to the vertical portion (16b) of the sound insulating cover (16).

  The horizontal part (71) is below both the horizontal part (13c) of the sound insulation cover (13) of the first sound insulation member (2) and the horizontal part (16c) of the sound insulation cover (16) of the second sound insulation member (3). It is assigned from.

  The upper end position of the first rising portion (72) is substantially equal to the upper end position of the abdominal sound absorbing mat (11a) of the first soundproof member (2), and the upper end position of the second rising portion (73) is the rail bottom portion. It is assumed that it is below the height of (Rb). The fixture (70) is installed from the left side of FIG. 10. At this time, the upper end position of the second rising portion (73) is set to be equal to or less than the height of the rail bottom (Rb). It is easy to move to the right (back side), and installation work can be performed easily.

  The horizontal part (71) is provided with a rubber cushion part (74) that contacts the horizontal parts (13c) and (16c) of the sound insulation covers (13) and (16) of both soundproof members (2) and (3). The first rising portion (72) is provided with a rubber cushion portion (75) that comes into contact with the upper portion of the inclined portion (13a) of the sound insulation cover (13) of the first soundproof member (2). Yes.

  According to the rail soundproofing device (10) of this reference example, in the first and second embodiments, two fixing members (5), (6), (8), and (9) are required. Both (70) can be fixed to both the soundproof members (2) and (3). At this time, a tool for bolt fixing or screw fixing is not required, and therefore, the labor and complexity of construction can be improved. In addition, since it is not a structure that is fixed with bolts on the side of the bottom surface of the rail bottom portion, the protruding portion is much smaller than the rail (R), and there is no hindrance during track maintenance.

  According to the rail soundproofing device of the present invention, the noise generated in the rail is reduced, and the construction labor and complexity can be improved, which can contribute to the reduction of railway noise.

Claims (11)

A first sound-proof member having a sound-absorbing mat and a sound-insulating cover, attached to a required portion of the rail surface from one side surface, and having a sound-absorbing mat and a sound-insulating cover and attached to a required portion of the rail surface from the other side surface side In a soundproofing device for a rail, comprising a second soundproofing member and a fixing tool for fixing both soundproofing members,
The fixing device includes a first fixing member and a second fixing member. The first fixing member is connected to the horizontal portion inserted below the bottom surface of the rail bottom portion and the end portion of the horizontal portion, and is provided on one of the soundproof members. The second fixing member includes a horizontal portion inserted below the horizontal portion of the first fixing member, and an end portion of the horizontal portion, the second fixing member being connected to the end of the horizontal portion. A rising portion applied to the sound insulation cover, and at least one convex portion is provided on one of the first and second fixing members, and the other fixing member is fitted to the convex portion. And a first fixing member and a second fixing member are overlapped with each other and are detachably fitted to each other.   At least one of the first and second fixing members is provided with a bent portion that is provided at an end of the horizontal portion on the side opposite to the rising portion and restricts the movement of the fixing member toward the rising portion. The rail soundproofing device according to claim 1.   3. The rail soundproofing device according to claim 2, wherein the bent portion is provided on the second fixing member and is brought into contact with the rising portion of the first fixing member from the outside.   The first convex portion of the at least one convex portion is provided on the outer surface of the rising portion of the first fixing member, and the first convex portion is fitted to the bent portion of the second fixing member with the first convex portion. The rail soundproofing device according to claim 3, wherein a concave portion is provided. A second convex portion of the at least one convex portion is provided so as to protrude in a horizontal direction from an end portion of the horizontal portion of the first fixing member on the side opposite to the rising portion, and is fitted to the second convex portion. The rail soundproofing device according to claim 4, wherein the second concave portion is provided at a lower end portion of the rising portion of the second fixing member.
Deleted claim 5   A first convex portion of the at least one convex portion is provided on a horizontal portion of one of the first and second fixing members, and on the horizontal portion of the other fixing member, on the first convex portion. 3. The rail soundproofing device according to claim 1 or 2, further comprising a first recess to be fitted.   The horizontal portion of one of the first and second fixing members is guided to the other horizontal portion when overlapping with the other horizontal portion, and the other horizontal portion after overlapping is moved in the rail length direction. The rail soundproofing device according to claim 6, further comprising a guide portion for regulating the rail.   The sound insulation device for a rail according to any one of claims 1 to 7, wherein the sound insulation cover is formed in a flat plate shape that is passed to the upper end portion of the rail abdomen side surface and the top surface of the rail bottom portion.   The sound insulation cover includes an inclined portion extending from the upper end of the rail abdomen side to the top end of the rail bottom surface, a vertical portion extending from the lower end of the inclined portion to the rail bottom surface, and a horizontal portion extending from the vertical lower end along the lower surface of the rail bottom. The rail soundproofing device according to any one of claims 1 to 7, wherein the sound absorbing mat is provided on both the inclined portion and the horizontal portion.   The rail soundproofing device according to claim 9, wherein the vertical portion of the sound insulation cover is provided with a convex portion for preventing displacement of each fixing member in the rail direction.   A method of attaching the rail soundproofing device according to claim 5 to the rail, the step of installing the first fixing member by inserting the horizontal portion of the first fixing member from one side of the rail below the bottom surface of the rail bottom, and the second fixing The horizontal portion of the member is inserted below the horizontal portion of the first fixing member from the other side of the rail, and the second concave portion of the second fixing member is fitted to the second convex portion of the first fixing member. There is no gap between the end portion of the horizontal portion of the fixing member on the side of the rising portion and the end portion of the second fixing member on the side of the rising portion, and the end portion on the rising portion side of the horizontal portion of the first fixing member and the second portion The step of installing the second fixing member so that there is a gap between the end of the fixing member on the side of the bent portion and the end of the tool using the rod-shaped tool as a fulcrum With the other end side as the power point, the middle part of the tool is the end of the horizontal part of the second fixing member on the bent part side. The lower end of the second fixing member and the bent portion side end of the second fixing member. A method of mounting a soundproofing device for a rail, comprising the step of eliminating a gap.