JP2017125318A - Pile driver noise control equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-weight and inexpensive pile driver noise control equipment.SOLUTION: A pile driver noise control equipment 100 prevents noise due to contact between a pile driver 12 and a pile 10 when the pile 10 is installed. The pile driver noise control equipment comprises: a cardboard cover 14, which covers a section A where the pile driver 12 contacts with the pile 10; cardboard cover members 20, 22, which cover upper and lower openings 16, 18 of the cover 14; a noise leakage prevention member 24, which is disposed at a clearance between the cover members 20, 22 and the pile driver 12 and the pile 10 to prevent noise leakage from the clearance; and a reflection noise reduction member 26, which is disposed on an inner face 14a of the cover 14 and reduces the reflection noise.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a soundproofing device for a pile driving machine for preventing noise generated when a pile such as a steel pipe pile is driven by a pile driving machine.

  When driving piles such as steel pipe piles, a large noise is generated due to the contact between the pile driving machine such as a hammer and the pile. For such noise, for example, as shown in FIG. 4, soundproofing measures such as installing a soundproof cylindrical steel cover 5 on the outer periphery of the hammer portion 2 of the pile driving machine 1 and the upper end 4 of the pile 3 are wide. (See, for example, Patent Documents 1 to 10). However, with such measures, noise may leak outside through the gaps between the upper and lower openings 6 and 7 of the cylinder of the steel cover 5, and the noise reduction effect is not always sufficient. Further, since the steel cover 5 is heavy, handling and lifting operations are not easy, and there is a problem that it is expensive because it is produced at each site.

JP2013-87525A JP 2010-180689 A JP 2002-54138 A Utility Model Registration No. 3028534 JP 58-106016 A Japanese Utility Model Publication No. 3-40331 JP-A-10-298987 JP-A-7-238542 JP 7-238545 A JP-A-4-70416

  For this reason, in order to facilitate handling and lifting work, development of a lightweight and inexpensive soundproofing device for a pile driver has been demanded.

  This invention is made | formed in view of the above, Comprising: It aims at providing the lightweight and cheap soundproofing apparatus for pile driving machines.

  In order to solve the above-described problems and achieve the object, a soundproofing device for a pile driving machine according to the present invention is a pile driving machine for preventing noise caused by contact between a pile driving machine and the pile at the time of pile driving. A soundproofing device, comprising a cover made of cardboard covering a portion where the pile driver and the pile are in contact with each other, a lid member made of cardboard covering the upper and lower openings of the cover, the lid member, the pile driver, and the Provided in a gap between the piles, a sound leakage prevention member for preventing sound leakage from the gap, and a reflected sound reduction member provided on the inner surface of the cover for reducing reflected sound It is characterized by.

  Moreover, the other soundproofing device for pile driving machines according to the present invention is characterized in that, in the above-described invention, the sound leakage prevention member is made of a paper-like paper material installed so as to cover the gap.

  Further, in another soundproofing device for a pile driving machine according to the present invention, in the above-described invention, the sound leakage prevention member is a paper tube that is installed in close contact so as to close the gap. To do.

  Moreover, the other soundproofing device for a pile driving machine according to the present invention is characterized in that, in the above-described invention, the reflected sound reducing member is provided in an uneven shape on the inner surface of the cover.

  According to the soundproofing device for a pile driving machine according to the present invention, there is provided a soundproofing device for a pile driving machine for preventing noise caused by contact between the pile driving machine and the pile at the time of placing the pile, A cover made of corrugated cardboard covering a portion in contact with the pile, a lid member made of corrugated cardboard covering the upper and lower openings of the cover, and a gap between the lid member and the pile driving machine and the pile; Since it is provided with a sound leakage prevention member for preventing sound leakage from the sound and a reflection sound reducing member for reducing the reflected sound provided on the inner surface of the cover, the pile driving is lighter and cheaper than the prior art. There exists an effect that the soundproof device for machines can be provided. In addition, handling and lifting operations are facilitated due to its light weight, and a cardboard cover and a lid member can be expected to reduce noise during pile driving, particularly high-frequency noise. Furthermore, since it is made of cardboard, it can be recycled after use, which contributes to an improvement in the recycling rate at the site.

  Moreover, according to the other soundproofing device for a pile driving machine according to the present invention, the sound leakage prevention member is made of interdigital paper that is installed so as to cover the gap, so that sound leakage from the gap can be easily performed. In addition, there is an effect that it can be prevented at a low cost.

  According to another soundproofing device for a pile driving machine according to the present invention, the sound leakage prevention member is a paper tube that is installed in close contact so as to close the gap, so that the tube is filled with air. By improving the adhesion, sound leakage from the gap can be easily and inexpensively prevented.

  Further, according to another soundproofing device for a pile driving machine according to the present invention, the reflected sound reducing member is provided in an uneven shape on the inner surface of the cover, so that the noise inside the cover hits the uneven inner surface and is diffusely reflected. . Since these reflected sounds interfere with each other and cancel each other, the reflected sound can be effectively reduced.

FIG. 1 is a schematic perspective view showing Embodiment 1 of a soundproofing device for a pile driving machine according to the present invention. FIG. 2 is a vertical sectional view showing Embodiment 2 of the soundproofing device for a pile driving machine according to the present invention. FIG. 3 is a vertical sectional view showing Embodiment 3 of the soundproofing device for a pile driving machine according to the present invention. FIG. 4 is a schematic perspective view showing an example of a conventional soundproofing device for a pile driving machine.

  Hereinafter, embodiments of a soundproofing device for a pile driving machine according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
First, the first embodiment of the present invention will be described.
As shown in FIG. 1, the soundproofing device 100 for a pile driving machine according to the first embodiment is a device for preventing noise caused by contact between the pile driving machine 12 and the pile 10 during pile driving, A cover 14, an upper lid member 20, a lower lid member 22 (lid member) made of corrugated cardboard that respectively closes the upper opening 16 and the lower opening 18 of the cover 14, a sound leakage prevention member 24, and a reflected sound reduction member 26. Prepare.

  The pile driving machine 12 has a cylindrical shape having a large-diameter disk-shaped hammer portion 12a at the lower end, and is driven by a driving source (not shown) to hit the upper end of the pile 10. The pile 10 is made of a steel pipe pile having a circular cross section, and its lower part is arranged on the ground or in the ground.

  The cover 14 covers a portion A where the hammer portion 12a of the pile driving machine 12 and the upper end of the pile 10 are in contact with each other, and has a quadrangular prism-like appearance made by combining general plane plates. In other words, the cover 14 has a rectangular tube shape with a square cross section. Note that the cover 14 is not limited to a rectangular tube having a square cross section, and may be formed of a rectangular tube having a polygonal cross section or a cylindrical shape having a circular cross section.

  The cover 14, the upper lid member 20, and the lower lid member 22 are made of cardboard as described above. Corrugated cardboard has a structure in which corrugated paper is sandwiched between front and back paper and bonded to give strength, and is an inexpensive material with excellent workability. By adjusting the corrugated corrugated size, shape, combination, number of stacked layers, direction, etc., it is possible to adjust noise reduction performance such as sound insulation and sound absorption, so the expected noise reduction performance is realized at low cost. can do.

  The sound leakage prevention member 24 is provided in a gap between the upper lid member 20 and the pile driving machine 12 and a gap between the lower lid member 22 and the pile 10, and prevents sound leakage from the gap to the outside. belongs to.

  The reflected sound reducing member 26 is provided on the inner surface 14a of the cover 14 to reduce the reflected sound.

The operation and action of the above configuration will be described.
Noise generated by contact between the pile driving machine 12 and the pile 10 at the time of pile driving is effectively reduced by the cover 14 made of cardboard, the upper lid member 20, and the lower lid member 22. Here, the reflected sound inside the cover 14 is reduced by the reflected sound reducing member 26. On the other hand, sound leakage from the gap between the upper opening 16 and the lower opening 18 of the cover 14 is prevented by the sound leakage preventing member 24. Thereby, the noise at the time of pile driving can be reduced.

  According to the present embodiment, since the cover 14, the upper lid member 20, and the lower lid member 22 that constitute the soundproofing device 100 for a pile driving machine are all made of corrugated cardboard, the pile driving machine is lighter and cheaper than the conventional technique. A soundproofing device can be provided. In addition, since the cardboard is lightweight, it is easy to handle and lift. In addition, the noise at the time of pile driving is generally superior in the high frequency range, but the effect of reducing the noise in the high frequency range can be expected. Furthermore, since it is made of cardboard, it can be recycled after use, which contributes to an improvement in the recycling rate at the site.

(Embodiment 2)
Next, a second embodiment of the present invention will be described.
As shown in FIG. 2, the soundproofing device 200 for pile driving machine according to the second embodiment includes the sound leakage prevention member 24 of the first embodiment described above with the interdigital paper material 24A, and reduces reflected sound. The member 26 is composed of a plurality of ribs 26A. Also according to the present embodiment, the same effects as those of the first embodiment can be obtained.

  The interdigital paper material 24 </ b> A is provided so as to cover the gap between the upper lid member 20 and the pile driving machine 12. One end of the paper material 24 </ b> A is fixed to the upper and lower edges of the inner end of the upper lid member 20, and the other end is disposed in contact with the outer surface of the pile driving machine 12. By providing the interdigital paper material 24A so as to cover the gap, sound leakage from the gap can be easily and inexpensively prevented.

  In addition, although the figure has shown the interdigital paper material 24A which covers the clearance gap between the upper cover member 20 and the pile driving machine 12, it is the same also about the clearance gap between the lower lid member 22 and the pile 10 outside a figure. The interdigital paper material 24A is installed.

  The ribs 26A are ring-shaped so as to protrude from the inner surface 14a of the cover 14 with an interval in the vertical direction. By providing the plurality of ribs 26A, the inner surface 14a becomes uneven. Thereby, the noise inside the cover 14 strikes the uneven inner surface 14a by the plurality of ribs 26A and is irregularly reflected. These reflected sounds interfere with each other and cancel each other, so that the reflected sounds can be effectively reduced.

  Here, the shape, size, quantity, arrangement mode, and the like of the ribs 26A are preferably set to be optimal for reducing the dominant frequency that varies depending on the pile diameter, pile length, and the like.

(Embodiment 3)
Next, a third embodiment of the present invention will be described.
As shown in FIG. 3, the soundproofing device 300 for a pile driving machine according to the third embodiment includes the sound leakage prevention member 24 of the first embodiment as a paper tube 24B and a reflected sound reduction member. 26 is configured by a concavo-convex portion 26B in which a sound absorbing material is sprayed in a concavo-convex shape. Also according to the present embodiment, the same effects as those of the first embodiment can be obtained.

  The tube 24 </ b> B is installed in close contact so as to close a gap between the upper lid member 20 and the pile driving machine 12. The inside of the tube 24B is filled with air to enhance the adhesion with the gap. By doing so, sound leakage from the gap can be easily and inexpensively prevented.

  In the drawing, a paper tube 24B that closes the gap between the upper lid member 20 and the pile driving machine 12 is shown, but the gap between the lower lid member 22 and the pile 10 outside the figure is similarly paper. A manufactured tube 24B is installed.

  In addition, the inner surface 14a of the cover 14 has an uneven shape due to the uneven portion 26B sprayed with the sound absorbing material. Thereby, the noise inside the cover 14 strikes the uneven part 26B and is irregularly reflected. These reflected sounds interfere with each other and cancel each other, so that the reflected sounds can be effectively reduced.

  Here, it is preferable to set the concavo-convex shape, size, arrangement mode, and the like of the concavo-convex portion 26B to be optimal for reducing the dominant frequency that varies depending on the pile diameter, the pile length, and the like.

  In addition, in said embodiment, various combinations are possible about the structure of the sound leak prevention member 24 and the reflected sound reduction member 26. FIG. For example, in the second embodiment, the tube 24B may be used instead of the interdigital paper material 24A, and in the third embodiment, the interdigital paper material 24A is used instead of the tube 24B. Also good. Even if it does in this way, there can exist an effect similar to the above.

  In addition, the sound leakage prevention member 24 provided in the gap between the upper lid member 20 and the pile driving machine 12 and the gap between the lower lid member 22 and the pile 10 may be different from each other. For example, the tube 24B may be provided on the upper lid member 20 side and the interdigital paper material 24A may be provided on the lower lid member 22 side. Or the structure upside down may be sufficient. Even if it does in this way, there can exist an effect similar to the above.

  As described above, according to the soundproofing device for a pile driving machine according to the present invention, it is a soundproofing device for a pile driving machine for preventing noise caused by contact between the pile driving machine and the pile at the time of placing the pile. A cover made of cardboard covering a portion where the pile driver and the pile are in contact with each other, a lid member made of cardboard covering the upper and lower openings of the cover, and a gap between the lid member, the pile driver and the pile Provided with a sound leakage prevention member for preventing sound leakage from the gap and a reflection sound reduction member for reducing reflected sound provided on the inner surface of the cover, compared with the prior art. A lightweight and inexpensive soundproofing device for a pile driving machine can be provided. In addition, handling and lifting operations are facilitated due to its light weight, and a cardboard cover and a lid member can be expected to reduce noise during pile driving, particularly high-frequency noise. Furthermore, since it is made of cardboard, it can be recycled after use, which contributes to an improvement in the recycling rate at the site.

  Moreover, according to the other soundproofing device for a pile driving machine according to the present invention, the sound leakage prevention member is made of interdigital paper that is installed so as to cover the gap, so that sound leakage from the gap can be easily performed. And it can prevent at low cost.

  According to another soundproofing device for a pile driving machine according to the present invention, the sound leakage prevention member is a paper tube that is installed in close contact so as to close the gap, so that the tube is filled with air. By increasing the adhesion, sound leakage from the gap can be prevented easily and inexpensively.

  Further, according to another soundproofing device for a pile driving machine according to the present invention, the reflected sound reducing member is provided in an uneven shape on the inner surface of the cover, so that the noise inside the cover hits the uneven inner surface and is diffusely reflected. . These reflected sounds interfere with each other and cancel each other, so that the reflected sounds can be effectively reduced.

  As described above, the soundproofing device for a pile driving machine according to the present invention is useful for preventing noise generated when driving a pile such as a steel pipe pile with a pile driving machine, and is particularly lightweight and inexpensive. Suitable for providing a soundproofing device for a pile driver.

DESCRIPTION OF SYMBOLS 10 Pile 12 Pile driver 12a Hammer part 14 Cover 14a Inner surface 16 Upper opening (upper and lower opening)
18 Lower opening (upper and lower openings)
20 Upper lid member (lid member)
22 Lower lid member (lid member)
24 Sound leakage prevention member 24A Paper material (Sound leakage prevention member)
24B tube (sound leakage prevention member)
26 Reflected sound reducing member 26A Rib (Reflected sound reducing member)
26B Concavity and convexity (reflection sound reducing member)
100, 200, 300 Soundproofing device for pile driver A Contact part

Claims (4)

A soundproofing device for a pile driving machine for preventing noise caused by contact between the pile driving machine and the pile at the time of placing the pile,
A cover made of cardboard covering a portion where the pile driver and the pile are in contact with each other;
A lid member made of cardboard that closes the upper and lower openings of the cover;
A sound leakage preventing member provided in a gap between the lid member and the pile driving machine and the pile, and for preventing sound leakage from the gap;
A soundproofing device for a pile driving machine, comprising a reflected sound reducing member provided on an inner surface of the cover for reducing reflected sound.   The soundproofing device for a pile driving machine according to claim 1, wherein the sound leakage prevention member is made of a paper-like paper material installed so as to cover the gap.   The soundproofing device for a pile driving machine according to claim 1, wherein the sound leakage preventing member is a paper tube installed in close contact so as to close the gap.   The soundproofing device for a pile driving machine according to any one of claims 1 to 3, wherein the reflected sound reducing member is provided in an uneven shape on an inner surface of the cover.

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