JP3540999B2 - Vibration-proof sound-proof structure of vibrating body - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coating structure called lagging provided for the purpose of preventing noise generated due to vibration, for example, in pipes and tanks of water and gas, etc., and particularly, can be easily and quickly mounted and removed, and can be repeatedly performed. The present invention relates to a vibration-proof and sound-proof structure of a vibrating body which can be used and additionally incorporates a sound insulation effect by frequency control.
[0002]
[Prior art]
Conventionally, as soundproofing lagging for pipes, ducts, LPG tanks, etc. of plant equipment, etc., a sound absorbing material such as lead or rock wool is wound on the outer peripheral surface of the pipe, etc., and further covered with waterproof paper and exterior paper Then, a structure is employed in which an exterior plate having a plate pressure of about 0.3 to 0.6 mm is attached to the outside thereof.
However, the soundproof lagging of such a structure merely stops the noise generated from the pipes and the like, and has led to a fundamental solution to actively suppress the vibration of the pipes and the like that are the source of the noise. Not in. Therefore, the sound insulation effect has a certain limit, and a sufficient effect has not been obtained.
[0003]
In addition, it is extremely difficult to disassemble and restore the conventional soundproof lagging after construction, and all used sound-absorbing materials have been discarded and replaced with new ones. Therefore, at construction sites where the layout is frequently changed, such as pipes and ducts of plant equipment, etc., the environmental viewpoint of processing waste such as used sound absorbing material due to the layout change, and the labor costs for dismantling and restoration, Problems have arisen from the economic point of view of increased material costs.
[0004]
[Problems to be solved by the invention]
The present invention takes into consideration the problems of the conventional technology, and can be easily and quickly attached and detached, and can be repeatedly used. It is an object of the present invention to provide a new and useful vibration-proof and sound-insulating structure of a vibrating body which is extremely excellent in sound insulation and incorporates a noise-reducing effect of the vibration.
[0005]
[Means for Solving the Problems]
In order to solve the above problem, the invention according to claim 1 provides a sound absorbing material provided on the outer peripheral surface of the vibrating body with a predetermined gap therebetween, and affixed to the outer peripheral surface of the sound absorbing material to shield the vibrating body from an external environment. A sound-insulating cover, a vibration-absorbing member that directly abuts a part of the outer peripheral surface of the vibrating body and absorbs vibration transmitted from the vibrating body, And an urging force adjusting device that adjusts the urging force of the urging means.
[0006]
According to a second aspect of the present invention, in the vibration isolating and soundproofing structure for the vibrating body according to the first aspect, the biasing force adjusting device has a detent locking portion for preventing rotation of the vibration isolating member at one end, and the other end. And an adjusting nut having a mounting screw portion, and an adjusting nut screwed into the mounting screw portion of the adjusting bolt.
[0007]
According to a third aspect of the present invention, in the vibration isolating and soundproofing structure of the vibrating body according to the first or second aspect, the vibration isolating member is formed of a vibration isolating rubber, and the urging means is formed of a compression coil spring. The vibration isolating rubber and the compression coil spring are arranged in series.
[0008]
According to a fourth aspect of the present invention, in the vibration-proof and sound-proof structure of the vibration body according to any one of the first to fourth aspects, the vibration-proof and sound-proof structure of the vibrator is divided into a plurality of vibration-proof and sound-proof structures. It is characterized by being configured by combining soundproof units.
[0009]
According to a fifth aspect of the present invention, in the vibration-proof and sound-proof structure of the vibration body according to the fourth aspect, a fixed wrap provided so that a circumferential joint portion of the vibration-proof and sound-proof unit is provided along one circumferential end of the soundproof cover. The other soundproof cover joined to the joint is hermetically joined with the other end in the circumferential direction overlapped by the joint.
[0010]
According to a sixth aspect of the present invention, in the vibration-proof and sound-proof structure of the vibration body according to the fourth or fifth aspect, the joint portion in the axial direction of the vibration-proof and sound-proof unit projects outward at both axial sides of the soundproof cover. Is tightly joined by sandwiching the flange portion provided on the outside from the outside with a one-touch type clamp joint.
[0011]
According to a seventh aspect of the present invention, in the vibration and soundproofing structure for a vibrating body according to any one of the first to sixth aspects, the vibrating body is a pipe, a duct, or a tank that conveys and stores a fluid that is a vibration source. It is characterized by the following.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the vibration-proof and sound-proof structure 1 of the vibrating body of the present invention will be specifically described with reference to the embodiments shown in FIGS.
The vibration damping soundproofing structure 1 of the vibrating body of the present invention is applied to a pipe 3 which is an example of a vibrating body provided in a plant facility or the like as shown in FIG. Specifically, a sound absorbing material 5 provided on the outer peripheral surface of the pipe 3 with a certain gap G therebetween, a soundproof cover 7 attached to the outer peripheral surface of the sound absorbing material 5, and one end abutting on the outer peripheral surface of the pipe 3. An anti-vibration rubber 9 as an anti-vibration member provided, a compression coil spring 11 which is an example of an urging means for urging the anti-vibration rubber 9 to the pipe 3, and a device for adjusting an urging force of the compression coil spring 11. The provision of the adjustment bolt 13 and the adjustment nut 15 as an example of the power adjustment device constitutes the vibration-proof and sound-proof structure 1 of the vibrating body of the present invention.
[0013]
As an example of the vibration-proof and sound-proof structure 1 of the vibrating body of the present invention, two semi-cylindrical vibration-proof and sound-proof units 17 as shown in FIG. It is constituted by combining. Hereinafter, the constituent members of the present invention will be described in more detail.
As the sound absorbing material 5, a material having an excellent sound absorbing effect, such as rock wool, glass wool, and urethane foam, can be used. The reason why the sound absorbing material 5 is provided with a certain gap G therebetween without directly contacting the outer peripheral surface of the pipe 3 is that the vibration of the pipe 3 propagates to the soundproof cover 7 through the sound absorbing material 5. This is to prevent it.
[0014]
An example of the soundproof cover 7 is a thin steel plate made of metal such as iron or stainless steel. A long fixed lap joint 19 having a step portion corresponding to the thickness of the soundproof cover 7 is provided along one end of the soundproof cover 7 in the circumferential direction. This fixed lap joint 19 receives the other end in the circumferential direction of the soundproof cover 7 of the other soundproofing and soundproofing unit 17 to be joined thereto at the time of assembling from the outside by the stepped portion, and is further enlarged in FIG. And tightly joined in a superposed state by tightening with screws or bolts.
[0015]
On the other hand, flange portions 21 are provided on both ends in the axial direction of the soundproof cover 7 so as to project outward in an L-shape. In forming the flange portion 21, besides bending the both ends in the axial direction of the soundproof cover 7 into an L-shape, a semi-annular flange portion 21 may be welded and attached to the axial ends of the soundproof cover 7. It is possible.
When assembling the anti-vibration soundproof unit 17, the two opposite flange portions 21 of each anti-vibration soundproof unit 17 arranged in the axial direction are abutted, and the two flange portions 21 are sandwiched by the one-touch clamp joint 23 from outside. And hermetically bonded.
[0016]
As the one-touch clamp joint 23, two semi-annular ring pieces 25 are rotatably connected at one end as shown schematically in FIG. 1, and are attached by a one-touch operation with a buckle B provided at the other end. Anything that can be removed can be used. The anti-vibration rubber 9 has a function of absorbing the vibration transmitted from the pipe 3 by its elastic force. The anti-vibration rubber 9 penetrates the axial center of the cylindrical rubber main body 27 and forms a small-diameter cylindrical through hole formed later. The receiving hole 31 receives the shaft portion 29 of the adjusting bolt 13 to be formed.
A portion from the substantially center of the receiving hole 31 to the pipe 3 side is hollowed out in a prismatic shape having a larger opening area, and this portion engages with a detent locking portion 33 of the adjustment bolt 13 described later. A locking hole 35 is provided.
[0017]
The compression coil spring 11 is contracted between the inner wall surface of the soundproof cover 7 and the vibration isolating rubber 9, and a shaft portion 29 of an adjustment bolt 13, which will be described later, passes through the shaft center in a non-contact state. One end of the adjustment bolt 13 is formed in a rectangular flat plate shape, and is engaged with a detent locking hole 35 formed in the anti-vibration rubber 9 to thereby prevent rotation of the anti-vibration rubber 9. It has become.
[0018]
A small-diameter cylindrical shaft portion 29 is vertically extended from one end surface of the rotation preventing locking portion 33, and a male screw is formed in a portion near the other end of the shaft portion 29, and this is used for mounting. It is a screw portion 37. Further, a fastening slit 39 is formed at the tip of the mounting screw portion 37. The adjustment nut 15 is a nut in which a male screw to be screwed into the mounting screw portion 37 of the adjustment bolt 13 is cut. When tightening with the adjustment bolt 13, a tool such as a screwdriver is inserted into a tightening slit 39 and a wrench or the like is inserted. The adjustment nut 15 is turned with a tool and tightened.
[0019]
As shown in FIG. 2, in the present embodiment, the seal washer 41 is further provided between the soundproof cover 7 and the adjustment nut 15, and the contact surface of the inner wall surface of the soundproof cover 7 with the compression coil spring 11 is worn by the compression coil spring 11. A rubber washer 43 is provided to reduce the vibration, and these constitute the vibration-proof and sound-proof structure 1 of the vibrating body of the present invention.
[0020]
Next, an operation procedure for attaching the vibration-proof and sound-proof structure 1 of the vibrating body of the present invention to the pipe 3 and an operation procedure for controlling the frequency of the pipe 3 using the adjustment bolt 13 and the adjustment nut 15 will be described.
In this embodiment, since the vibration-proof and sound-proof unit 17 standardized in advance as shown in FIG. 3 is used, factory production is possible, unlike the conventional on-site construction method. Therefore, it is only necessary to bring the vibration and soundproofing units 17 manufactured in the factory to the site where the soundproofing and soundproofing units 17 are to be constructed, and assemble them around the pipe 3.
[0021]
First, the circumferential assembly is performed. In the circumferential assembly, two semi-cylindrical vibration-proof and sound-proof units 17 are used and are located outside the pipe 3 so as to sandwich it. Then, the fixed lap joint 19 provided on one circumferential side of the soundproof cover 7 is overlapped with the other circumferential side of the soundproof cover 7 of the other vibration-proof and soundproof unit 17, and these are fixed with screws or bolts. It is done by doing.
Next, the assembly in the axial direction is performed. The axial assembly is a process of connecting the cylindrical intermediate assembly units that have been assembled in the circumferential direction in the axial direction. This is performed by abutting the opposed flange portions 21 of the vibration isolating and soundproofing unit 17 and sandwiching them from outside thereof so as to cover them with a one-touch clamp joint 23.
[0022]
The one-touch clamp joint 23 can be fixed simply by hooking the hook portion of the buckle B provided at the free end of one ring piece 25 to the locking portion of the buckle B provided at the free end of the other ring piece 25. Easy mounting is possible.
Thereafter, if all of the vibration-proof and sound-proof units 17 arranged in the axial direction of the pipe 3 are connected in the same procedure, the mounting of the vibration-proof sound-proof and sound-proof structure 1 on the pipe 3 is completed. In addition, when the vibration-proof sound-insulating structure 1 of the vibrating body once attached is removed, the procedure described above may be performed in reverse order. Moreover, it can be used repeatedly.
[0023]
Next, an operation procedure for controlling the frequency of the pipe 3 will be described.
The pipe 3 vibrates under the influence of the fluid flowing through the pipe 3 to generate noise. Since the vibration of the pipe 3 is absorbed by the vibration isolating rubber 9 and the compression spring 11 and is separated from the external environment by the vibration isolating and soundproofing structure 1 of the vibrating body of the present invention, the leakage of noise to the outside is small. However, when the natural frequency of the pipe 3 matches the natural frequency of the vibration-proof and sound-proof structure 1 of the vibrating body, resonance occurs, and the amount of noise increases. In such a case, the tightening position of the adjustment bolt 13 and the adjustment nut 15 is adjusted to change the pressing force of the vibration-proof rubber 9 against the pipe 3, thereby avoiding the phenomenon of resonance.
[0024]
In the vibration-proof and sound-proof structure 1 of the vibrating body, the vibration-proof rubber 9 and the compression coil spring 11 are arranged in series. It also exhibits absorbing vibration and soundproofing functions. The anti-vibration rubber 9 exerts an anti-vibration and sound-proofing function especially on high-frequency vibrations, and the compression coil spring 11 exerts an anti-vibration and sound-proofing function especially on low-frequency vibrations. Therefore, the vibration-proof and sound-proof structure 1 of the vibrating body has a high vibration-proof and sound-proof function over a wide range from a low range to a high range.
Further, the tightening position of the adjusting bolt 13 and the adjusting nut 15 is adjusted as described above, and the anti-vibration and soundproof function of the anti-vibration rubber 9 and the anti-vibration and soundproofing of the compression spring 11 are performed according to the level of noise generated by the vibrating body. By changing the balance in which the functions are exhibited, it is possible to reliably suppress the noise generated from the pipe 3. Therefore, an extremely high vibration and soundproof function can be obtained.
[0025]
Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and even if there is a design change without departing from the gist of the present invention, the present invention is not limited to this embodiment. include.
For example, the vibrating body to which the present invention is applied is not limited to the piping 3 of the above-described plant equipment, but may be a gas tank such as a duct or an LPG provided in the same equipment, or a soundproof enclosure or a building such as various equipment and machinery. Of course, the present invention can also be applied to pipes and ducts of equipment and the like, and particularly to toilets and bathtub water distribution pipes and water absorption pipes installed on two or more floors of a house.
[0026]
Further, the shape of the vibration-proof and sound-proof unit 17 is not limited to a semi-cylindrical shape, and it is also possible to shorten the arc length as shown in FIG. In addition, in the above-described embodiment, the shape of the vibration-proof and sound-proof structure 1 of the vibrating body is cylindrical, but may be a rectangular tube. It is also possible. Similarly, the shape of the anti-vibration rubber 9 is not limited to a cylindrical shape, and various shapes such as a prismatic shape can be selected.
[0027]
In addition, as the urging means, a rubber damper made of a material softer and more flexible than the vibration-proof rubber 9, an air damper using air pressure or oil pressure, an oil damper, or the like can be used. When an air damper, an oil damper, or the like is used, the biasing force can be varied by adjusting the pressure regulating valve, so that it also has a function as a biasing force adjusting device.
A key, a spline, a serration, or the like can be applied as a rotation preventing mechanism of the vibration isolation rubber 9. Further, when it is desired to prevent even a small amount of airborne sound transmitted through the soundproof cover 7, the thickness of the soundproof cover 7 can be further increased, a sound absorbing material can be added, and a modified sound insulating material can be added.
[0028]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, attachment and detachment of the vibration-proof sound-proof structure of a vibrating body with respect to piping etc. can be performed easily and quickly. In addition, repetitive use becomes possible, and all of the problems, such as the increase in labor and material costs associated with the disposal, disassembly, and restoration of waste such as used sound absorbing materials, which have been a problem in the past, can be solved.
Further, in addition to the sound insulation effect provided by the sound absorbing material and the soundproof cover, the vibration absorption effect provided by the vibration damping member and the sound deadening effect provided by the frequency control by the urging force adjusting device are combined to greatly improve the sound insulation.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a vibration-proof and sound-proof structure of a vibrating body according to an embodiment of the present invention is mounted on a pipe, and a cross-sectional view of a vibration-proof rubber mounting portion.
FIG. 2 is an enlarged longitudinal side view showing a vibration-proof rubber attachment portion in the vibration-proof and sound-proof structure of the vibrating body according to the embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a vibration-proof and sound-proof unit in the vibration-proof and sound-proof structure of the vibrator according to the embodiment of the present invention.
FIG. 4 is a cross-sectional view showing a vibration-proof and sound-proof unit in a vibration-proof and sound-proof structure of a vibrator according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vibration-proof sound-proof structure 3 Vibration body 5 Pipe 5 Sound-absorbing material 7 Sound-proof cover 9 Vibration-proof rubber 11 Compression coil spring 13 Adjustment bolt 15 Adjustment nut 17 Vibration-proof soundproof unit 19 Fixed lap joint 21 Flange part 23 One-touch clamp joint 25 Ring piece 27 Rubber body 29 Shaft part 31 Receiving hole 33 Detent locking part 35 Detent locking hole 37 Mounting screw part 39 Tightening slit 41 Seal washer 43 Rubber washer B Buckle G Void

Claims (7)

A sound-absorbing material provided on the outer peripheral surface of the vibrating body with a certain gap therebetween, a soundproof cover attached to the outer peripheral surface of the sound-absorbing material to shield the vibrating body from the external environment, and directly on a part of the outer peripheral surface of the vibrating body An anti-vibration member that abuts and absorbs vibration transmitted from the vibrating body; an urging means that applies a pressure holding force to the vibrating body to the anti-vibration member and absorbs the vibration transmitted from the vibrating body; And a biasing force adjusting device for adjusting the biasing force of the means. 2. The vibration-absorbing and soundproofing structure of a vibrating body according to claim 1, wherein the biasing force adjusting device has a rotation preventing locking portion for preventing rotation of the vibration isolating member at one end and an adjusting screw portion at the other end. A vibration-proof and sound-proof structure for a vibrating body, comprising: a bolt; and an adjusting nut screwed into a screw portion for mounting the adjusting bolt. 3. The vibration isolating and soundproofing structure for a vibrating body according to claim 1, wherein the vibration isolating member is formed of a vibration isolating rubber, and the urging means is formed of a compression coil spring. Is a vibration-proof and sound-proof structure of a vibrating body, which is arranged in series. 4. The vibration-proof and sound-proof structure of the vibrator according to claim 1, wherein the vibration-proof and sound-proof structure of the vibrator is configured by combining a plurality of vibration-proof and sound-proof units divided in a circumferential direction and an axial direction. 5. A vibration and soundproof structure of a vibrating body, characterized in that: 5. The vibration-proof and sound-proof structure of a vibration body according to claim 4, wherein a circumferential joint portion of the vibration-proof and sound-proof unit is joined to the sound-proof cover by a fixed lap joint provided along one circumferential side of the soundproof cover. A vibration-proof and sound-proof structure for a vibrating body, wherein another soundproof cover is hermetically bonded in a state where the other end sides in the circumferential direction are overlapped. 6. The vibration-proof and sound-proof structure of a vibration body according to claim 4 or 5, wherein a joint portion in the axial direction of the vibration-proof and sound-proof unit has a one-touch type flange portion provided to protrude outward at both axial side edges of the soundproof cover. A vibration-proof and sound-proof structure for a vibrating body, which is hermetically joined by being clamped from outside by a clamp joint. The vibration-absorbing and sound-proof structure of a vibrating body according to any one of claims 1 to 6, wherein the vibrating body is a pipe, a duct, or a tank that conveys and stores a fluid serving as a vibration source. Anti-vibration and sound-proof structure.

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