JP2021156091A - Sound insulation wall - Google Patents

Abstract

To provide a sound insulation wall that can be installed in a state where a sound insulation plate is surely prevented from falling off from a support column.SOLUTION: A sound insulation wall A includes a plurality of support columns 2 erected along an edge of a railway elevated line B at predetermined intervals, a sound insulation plate 3 supported between the support columns 2, and a fixing tool 1 for fixing the sound insulation plate 3 to the support column 2. The support column 2 includes a groove portion formed of H-shaped steel and formed between a pair of flanges. The sound insulation plate 3 is supported by inserting a side edge portion into the groove portion of the support column 2. A fixture 1 is composed of a plate member connected to a flange located on the outer side opposite to the railroad track among a pair of flanges of the support column 2, and pressure welding means provided on the plate member and pressed against the sound insulation plate 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sound insulation wall installed along the edge of an elevated railway line in order to reduce noise generated when a railway vehicle travels.

This type of sound insulation wall is formed by attaching a sound insulation plate between a plurality of columns erected at predetermined intervals.

The stanchions are made of H-section steel and have grooves formed between a pair of flanges extending in the longitudinal direction. By inserting the vertical edge of the sound insulation plate into this groove, both sides of the sound insulation plate are supported by the columns.

By the way, the thickness dimension of the sound insulation plate is smaller than the width dimension of the groove portion (corresponding to the distance dimension of a pair of flanges facing each other in H-shaped steel). For this reason, the sound insulation plate may inadvertently come off from the groove of the column and fall off from between the pair of columns.

Therefore, in the conventional sound insulation wall, the sound insulation plate is fixed to the support column by using a fixture so that the sound insulation plate does not come off from the support column (see, for example, Patent Document 1).

This type of fixture consists of a movable part provided in the gap between one flange of H-shaped steel, which is a support, and a sound insulation plate, and a bolt, which is a moving member that advances and retreats the movable member toward the sound insulation plate through the flange. And have.

In this fixture, the bolt penetrating the flange is extended toward the movable portion, so that the tip of the bolt presses the movable portion, and the movable portion is pressed against the sound insulation plate to fix the sound insulation plate in the groove portion.

JP-A-2017-137704

However, when the gap between the flange (inner side surface of the groove) and the sound insulation plate is small, or when the length of the flange (depth of the groove) is small, the fixture used for the conventional sound insulation wall can be used in the gap. At the same time, it is necessary to make the movable part small, and there is a disadvantage that the fixing force of the sound insulation plate by the movable part cannot be sufficiently obtained and the sound insulation plate cannot be reliably prevented from falling off from between the columns.

In view of the above inconvenience, it is an object of the present invention to provide a sound insulation wall that can be installed in a state where the sound insulation plate is surely prevented from falling off from the support column.

In order to achieve such an object, the present invention comprises a plurality of columns erected along the edge of an elevated railway line at predetermined intervals, a sound insulation plate supported between the columns, and the columns. In a sound insulation wall provided with a fixture for fixing a sound insulation plate, the support column is provided with a groove portion formed of H-shaped steel and formed between a pair of flanges, and the side edge portion of the sound insulation plate is inserted into the groove portion of the support column. The fixture is supported by a plate member connected to a flange located on the outer side of the pair of flanges of the column, which is opposite to the railroad track, and is provided on the plate member and press-welded to the sound insulation plate. It is characterized in that it is composed of a pressure welding means.

In the sound insulation wall of the present invention, a sound insulation plate supported between columns is fixed by a fixture attached to the columns. The fixture adopted in the present invention includes a plate member connected to the support column and a pressure welding means supported by the plate member. According to this, since the pressure welding means is attached between the plate member and the plate surface of the sound insulation plate, it does not depend on the gap between the groove portion and the plate surface of the sound insulation plate, and has almost an influence on the size of the groove portion. The sound insulation plate is fixed to the support without receiving it.

Further, since the plate member of the fixture is connected to the flange located on the outer side of the pair of flanges forming the groove portion of the H-shaped steel column, which is the opposite side of the railway line, the elevated wire on the opposite side of the railway line. It is possible to prevent the sound insulation plate from coming off or falling off to the outside.

As described above, according to the present invention, it is possible to provide a sound insulation wall that can be installed in a state in which the sound insulation plate is surely prevented from falling off from the support column.

Explanatory drawing which shows typically the sound insulation wall of one Embodiment of this invention. Explanatory drawing which shows the structure of the fixture. Explanatory drawing which shows the fixed state of the sound insulation plate to a support. Top view of the plate member. Side view of the pressure welding means. Top view of the washer. Explanatory plan view of the outer piece of the interposition member.

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the sound insulation wall A of the present embodiment is installed on the edge of the railway elevated line B, has a plurality of columns 2 provided with fixtures 1, and a plurality of sound insulation plates 3 provided between the columns 2. And have.

Each column 2 is erected at a predetermined distance from each other, and is formed of H-shaped steel as shown in FIGS. 2 and 3.

The fixture 1 provided on the support column 2 fixes the sound insulating plate 3 to the support column 2, and includes a plate member 4 and a pressure welding means 5 supported by the plate member 4. As shown in FIG. 1, the fixture 1 is provided on the outside of the column 2 (opposite the railroad track (not shown)).

As shown in FIGS. 2 and 3, a groove portion 7 is formed in the support column 2 by a pair of flanges 6 facing each other. One side end of the sound insulation plate 3 is inserted into the groove 7. With such a structure, the sound insulation plate 3 is attached between a plurality of columns 2 erected with the groove portions 7 facing each other.

The plate member 4 of the fixture 1 is connected to the flange 6 located on the outer side of the pair of flanges 6 of the support column 2, and is integrally attached to the support column 2 by this. Then, the pressure contact means 5 supported by the plate member 4 presses against the sound insulation plate 3, so that the sound insulation plate 3 is fixed to the support column 2.

Since the plate member 4 of the fixture 1 is connected to the flange 6 located on the outside of the support column 2, even if the sound insulation plate 3 receives wind pressure from the vehicle, the elevated wire B is prevented from coming off or falling off due to the influence. It can be reliably prevented.

As shown in FIG. 4, the plate member 4 of the fixture 1 includes two through holes 8 penetrating in the thickness direction and one screw hole 9. As shown in FIGS. 2 and 3, a fastening bolt 10 is inserted into each through hole 8, and an advance / retreat bolt 11 described later is screwed into the screw hole 9.

A pair of mounting holes 12 communicating with each through hole 8 of the plate member 4 are formed on one flange 6 of the support column 2 corresponding to the mounting polymerization position of the plate member 4. The mounting hole 12 communicates with the through hole 8, and the fastening bolt 10 is inserted into both the mounting hole 12 and the through hole 8.

The tip of the fastening bolt 10 that penetrates the through hole 8 and the mounting hole 12 is screwed into the nut 13 to fasten one flange 6 of the support column 2 to the plate member 4.

In the plate member 4 of the fixture 1, since the two through holes 8 are connected by the two fastening bolts 10, the plate member 4 is prevented from rotating with respect to the flange 6 of the support column 2, and the sound insulation plate 3 is stably fixed. be able to.

The pressure welding means 5 includes an interposition member 14 formed by bending a steel plate, and an advancing / retreating bolt 11 screwed into the plate member 4 so as to penetrate the plate member 4 in the thickness direction.

As shown in FIG. 5, the interposing member 14 includes a U-shaped sandwiching portion 15 that sandwiches both the inner and outer surfaces of one end portion of the plate member 4. The sandwiching portion 15 is configured such that the outer piece portion 16 and the inner piece portion 17 face each other.

Insertion holes 18 are formed in the sandwiching portion 15 in each of the outer piece portion 16 and the inner piece portion 17. The advance / retreat bolt 11 is inserted into the insertion hole 18 when the advance / retreat bolt 11 is screwed into the screw hole 9 of the plate member 4. As a result, the pressure welding means 5 is in a state of being connected to the plate member 4.

An abutting piece portion 19 that comes into contact with the plate surface of the sound insulating plate 3 is continuously provided on the inner piece portion 17 of the sandwiching portion 15. The contact piece portion 19 is folded back and extends to the side facing the inner piece portion 17.

Further, the contact piece portion 19 is continuously provided with an input portion 20 that is folded back toward between the inner piece portion 17 and the contact piece portion 19. As shown in FIGS. 2 and 3, the input portion 20 comes into contact with the tip portion of the advancing / retreating bolt 11 screwed into the plate member 4.

A tapered protrusion 11a is formed at the tip of the advancing / retreating bolt 11. The input portion 20 of the interposing member 14 is formed with a receiving hole 21 into which the protrusion 11a at the tip of the advancing / retreating bolt 11 is fitted. Since the protrusion 11a of the advancing / retreating bolt 11 that fits into the receiving hole 21 has a tapered shape, the rotation of the advancing / retreating bolt 11 is not hindered.

By providing the receiving hole 21 in the input portion 20, the tip of the advancing / retreating bolt 11 can be pressed at a fixed position against the input portion, and the pressing force of the advancing / retreating bolt 11 is surely transmitted to the contact piece portion 19. Can be made to.

Then, the advancing / retreating bolt 11 is screwed into the plate member 4, and the advancing / retreating bolt 11 can be advanced / retreated only by rotating the advancing / retreating bolt 11 with respect to the plate member 4. As a result, it is not necessary to provide a separate member such as a nut, so that the number of parts is small and an increase in parts cost and manufacturing cost can be suppressed.

A washer 22 is attached between the head portion 11b of the advancing / retreating bolt 11 and the outer piece portion 16 of the interposing member 14. The washer 22 is a pair of convex pieces 23 protruding outward as shown in FIG. 6, and a holding piece 24 standing up so as to surround the head 11b of the advancing / retreating bolt 11 as shown in FIGS. 2 and 6. And have. By fitting the head 11b of the advancing / retreating bolt 11 into the holding piece 24, the washer 22 rotates integrally with the advancing / retreating bolt 11.

As shown in FIG. 7, a pair of claw pieces 25 are cut and raised in the outer piece portion 16 of the interposing member 14 in the vicinity of the insertion hole 18 so as to correspond to the washer 22. Both claw pieces 25 project onto the outer piece 16 with restoring elasticity.

Then, both claw pieces 25 are pressed by the convex piece 23 of the washer 22 to allow the rotation of the advancing / retreating bolt 11 in the tightening direction, and allow the convex piece 23 of the washer 22 to rotate in the reverse direction in the loosening direction. It functions as a so-called one-way clutch that abuts and blocks 23. As a result, in the fixed state of the sound insulating plate 3 shown in FIG. 3, loosening of the advancing / retreating bolt 11 is prevented.

A ... Sound insulation wall, B ... Railway elevated line, 1 ... Fixture, 2 ... Support, 3 ... Sound insulation plate, 4 ... Plate member, 5 ... Pressure welding means, 6 ... Flange, 7 ... Groove.

Claims (1)

In a sound insulation wall provided with a plurality of columns erected along the edge of an elevated railway line at predetermined intervals, a sound insulation plate supported between the columns, and a fixture for fixing the sound insulation plate to the columns. ,
The strut is made of H-section steel and has a groove formed between a pair of flanges.
The sound insulation plate is supported by inserting a side edge portion into the groove portion of the support column.
The fixture is provided by a plate member connected to a flange located on the outer side of the pair of flanges of the support column, which is opposite to the railroad track, and a pressure contact means provided on the plate member and pressed against the sound insulation plate. A sound insulation wall characterized by being constructed.

Images