JPH0826594B2 - Frame structure of sound absorbing material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a frame structure of a sound absorbing material, and particularly to a heavy-duty power transformer installed in a closed building, a diesel internal combustion engine for a generator, and the like. The present invention relates to a frame structure of sound absorbing material that reduces noise generated from a mechanical device.

[Conventional technology]

Conventionally, in order to muffle the noise generated from the heavy machinery, a porous sound absorbing material is arranged on the inner wall of the closed building, the sound absorbing material absorbs the noise, and the sound absorbing material completely absorbs the noise. There is a double-layered sound insulation building facility that reduces the noise transmitted to the outside of the building by isolating the sound that is not present by the walls of the building.

By the way, generally, the following three construction methods are implemented as a construction method for installing the sound absorbing material on the inner wall of the building.

The first construction method is a construction method in which a sound absorbing material is attached to a wall surface of a building through an adhesive. This method has little soundproofing effect at low temperature and needs re-examination, and the second method was proposed. The second construction method is a construction method in which a wooden frame is used and a sound absorbing material is attached to the frame. However, the second construction method has a drawback that the framework is deformed by the radiant heat from the heavy machinery, and the press board for molding the sound absorbing material attached to the framework is deformed. Further, there is a concern that the framework will spontaneously ignite when the temperature in the room becomes high.

The third construction method uses a light weight steel material as a frame of the sound absorbing material, and this frame is erected from the inner wall with an air layer interposed,
This is a method in which the steel materials of the frame are welded to the bolts that are planted on the inner wall, and then the steel materials are welded together.

[Problems to be Solved by the Invention]

However, in the third construction method, since heating and cooling due to the operation and stop of the generator etc. are repeated, the steel material repeatedly expands and contracts, which may cause cracks and peeling at the welded joint portion of the steel material. When cracking or peeling occurs, there is a disadvantage that beat vibration occurs in the gap.

In addition, when steel materials expand and contract, the steel materials are welded to each other, so the steel materials may be distorted into a curved shape, which may deform the press board that fixes the sound absorbing material in the frame. There is a drawback that you have to do.

Furthermore, since the accuracy of the flatness and verticality of the wall surface is rough, this method requires temporary welding of steel materials to form a temporary frame, and then multiple temporary repair welding operations to adjust the position and perform final welding. However, there is a drawback that the assembly time becomes long.

Further, when adjusting the position, it is necessary to consider the welding elongation of the steel material, which requires the skill and experience of the operator.

The present invention has been made in view of the above circumstances, and provides a framework structure of a sound absorbing material that is not affected by radiant heat from a generator or the like and that can be assembled easily and in a short time. The purpose is to do.

[Means for solving problems]

The present invention, in order to achieve the above-mentioned object, an anchor bolt having a threaded portion formed at its tip and erected on the inner wall of the building,
A plurality of horizontal beams provided with adjustable distances from the inner wall of the building via a mounting bracket screwed to the threaded portion of the anchor bolt, and a plurality of vertical beams mounted to the horizontal beam via mounting brackets. , A perforated press board attached to the vertical beam via a board attachment plate, and a frame formed by the horizontal beam and the vertical beam, and arranged with an air layer between the inner wall of the building The horizontal beam is configured such that the distance from the inner wall of the horizontal beam is adjusted according to the thickness of the air layer between the inner wall of the building and the sound absorbing material.

[Operation] According to the present invention, the connecting portions of the steel members (14, 28) of the frame (10) are connected by the mounting bracket (30), and further the frame (10)
Is attached to the anchor bolt (22) provided on the inner wall (16) with the mounting bracket (18). Therefore, since the connecting portion and the mounting portion can be easily moved, the connecting portion can be corrected in a short time. Further, even if distortion occurs due to the expansion of the steel material of the framework (10), it can be absorbed by the connecting portion, so that the press board (46) can be prevented from being deformed.

〔Example〕

Hereinafter, preferred embodiments of the frame structure of the sound absorbing material according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a main part of a frame structure of a sound absorbing material according to the present invention.

In FIG. 1, the frame structure 10 of the sound absorbing material is mainly composed of the horizontal beam 1.
4 and 14 ... and vertical beams 28, 28 ...
Is attached to the concrete wall 16 via attachment fittings 18, 18 ... As shown in FIG.

The holding plates 20 and 20 of the mounting bracket 18 are provided on both sides of the cross beam 14, and the holding plates 20 and 20 are inserted into the right end of the anchor bolt 22 and are screwed on both sides of these.
The transverse beam 14 is clamped by tightening 24, 24. The left end portion of the anchor bolt 22 is screwed and joined to the anchor 16a, and the anchor 16a is driven into the concrete wall 16. Therefore, the horizontal beam 14 is a concrete wall.
It is supported at a distance of about L from 16.

Further, the vertical beam 28 of the frame 10 in FIG. 1 is connected to the horizontal beam 14 via a mounting member 30 as shown in FIG.

As shown in FIGS. 3 and 4, the holding plates 32, 32 of the mounting bracket 30 are provided on both sides of the vertical beam 28, and the holding plates 32, 32
The bolt 32 is inserted into the right end portion of the bolt 34, and the vertical beam 28 is sandwiched by tightening nuts 36, 36 screwed on both sides thereof. A holding plate 38 having the same shape as the holding plate 32 is fixed to the left end portion of the bolt 34 at a position displaced by 90 ° with respect to the holding plate 32 about the bolt 34. The holding plate 38 is provided on the left side surface of the horizontal beam 14 in FIG. 3, and holds the horizontal beam 14 with the vertical beam 28 that is in contact with the right side surface of the horizontal beam 14. Therefore, the horizontal beams 14, 14 ... and the vertical beams 28,
28 ... are attached in a grid pattern as shown in FIG.

The vertical beams 28, 28 between the horizontal beams 14, 14 are shown in FIG.
As shown in FIG. 3, a board mounting plate 44 is provided, and a press board 46 is fixed to the board mounting plate 44 with screws 50, 50.

The assembling process of the frame structure of the sound absorbing material according to the present invention configured as described above will be described.

Surround the surrounding four directions and the ceiling with concrete, and drive anchors 16a, 16a ... to the concrete wall 16. next,
After screwing the anchor bolt 22 into the anchor 16a, the clamping plate 2
The cross beam 14 is sandwiched between 0 and 20, and the cross beam 1 is attached to the concrete wall 16.
Fix 4, 14 ... Next, the vertical beam 28, 28 ...
It is sandwiched between 2 and 32, and the horizontal beam 14 is sandwiched between the sandwiching plate 38 and the vertical beam 28.
The vertical beam 28 is attached to the horizontal beam 14 by sandwiching.

Then, the sound absorbing material 42 is clamped and fixed to the frame composed of the horizontal beams 14 and the vertical beams 28 by a technique described later. The sound absorbing material 42 is
It is a synthetic fiber or non-combustible fiber product made of cotton-like porous material, and absorbs noise generated from a heavy mechanical device (not shown) to muffle noise. A portion corresponding to the horizontal beam 44 or the vertical beam 28 is freely formed in a concave shape, and the sound absorbing material 42 can be aligned with the uneven surface. Further, since the back surface sound source is formed on a loose smooth surface, there is no problem in adapting the shaping by the press board.

The board mounting plate 44 is fixed to the vertical beam 28 with the steel screw 51 ′ while the sound absorbing material is interposed in the horizontal beam 14, and the perforated press board 46 is fixed to the board mounting plate 44 with the screw 50. The gap of the perforated pressboard is closed and shaped by the joint 48, but in some cases, it can be left as a pattern as a uniform gap.

In addition, there is a first space between the sound absorbing material 42 and the concrete wall 16.
As shown in FIG. 2 and FIG. 2, the air layer 26 having the width L is formed, and the sound deadening effect can be enhanced.

Thus, according to the frame structure of the sound absorbing material according to the present invention,
Attach the horizontal beam 14 and vertical beam 28 of the frame 10 to the mounting bracket 18 and the mounting bracket 30.
Since the connection is made with and, after the horizontal beam 14 and the vertical beam 28 are completed, it is possible to adjust the overall dimensional deviation by only correcting the minimum deviation. Therefore, the framework 10 can be assembled easily and in a short time.

Furthermore, due to the influence of radiant heat from heavy machinery, etc.
4. Even if the vertical beam 28 expands or contracts, the horizontal beam 14 and the vertical beam 28 are not welded and joined, so that no cracks or peeling occur at the connecting portion, and neither bending nor wavy distortion occurs. Therefore, the repair work for correcting the curving deformation of the press board 46 caused by the curving or wavy distortion can be reduced.

Further, in this embodiment, the horizontal beam 14 is provided via the mounting member 18 so that the position of the anchor bolt 22 can be adjusted in the axial direction.
Therefore, when the horizontal beam is installed in a wavy state due to the construction error of the concrete wall 16, the waviness can be absorbed only by changing the position of the horizontal beam 14 and adjusting the distance L between the horizontal beam 14 and the concrete wall 16. Therefore, the waviness repair work of the lateral beam 14 can be easily performed.

On the other hand, as a modified example of the present invention, it can be applied as a cold protection structure for outer walls of buildings in extremely cold regions. 2 outside windows
In order to make the heat insulating property of the intermediate air layer having a heavy structure effective, it can be used for assembling a hollow-side framework in which a fibrous heat insulating material is lined on the outer wall. As the steel material in this case, a rigid resin molded high toughness beam material with low thermal conductivity and high mechanical strength is used, and it is necessary to prevent local freezing due to low temperature heat transfer by the lightweight shaped steel material, but it can be used. is there.

As another application example, it can be used as a design and construction method for an exterior heat insulating double wall of a large capacity freezer for frozen foods. That is,
Prevents outside air radiation from penetrating and penetrating the inner wall, and preventing cold and warm radiation from the internal freezer from radiating and transmitting to the outside, as well as convective heat transfer in the hollow air layer itself, such as heat transfer of the intermediate adiabatic medium. It can be used for the interior design of the exterior heat insulation material that prevents it by minimizing it with the double heat insulation (heat insulation) material. When it is used as a framework for a cryogenic outer wall, a mounting metal fitting, a connecting metal fitting, and a heat insulating high tensile strength reinforced rigid resin molding material instead of metal must be used.

〔The invention's effect〕

As described above, according to the frame structure of the sound absorbing material according to the present invention, the horizontal beam is provided on the anchor bolt through the mounting bracket so that the position of the horizontal beam is adjustable, and the horizontal beam is attached in a wavy state due to the construction error of the inner wall of the building. In this case, since the swell can be absorbed only by changing the position of the horizontal beam and adjusting the distance between the horizontal beam and the inner wall, the swell repair work of the horizontal beam can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a base frame framework to which the frame structure of the sound absorbing material according to the present invention is applied, and FIG. 2 is a side sectional view showing a mounting state of a horizontal beam of the frame structure of the sound absorbing material according to the present invention. FIG. 3 is a side sectional view of a connecting portion between a horizontal beam and a vertical beam of the sound absorbing material frame structure according to the present invention, and FIG. 4 is a sectional view taken along line BB in FIG. 10 ... Frame, 14 ... Horizontal beam, 18 ... Fixing metal fittings, 20, 32, 38 ... Clamp plate, 28 ... Vertical beam, 30 ... Mounting metal fittings.

Claims (1)

[Claims] 1. A distance from the inner wall of the building is adjusted through an anchor bolt having a threaded portion formed at its tip and erected on the inner wall of the building, and a mounting bracket screwed to the threaded portion of the anchor bolt. A plurality of horizontal beams freely provided, a plurality of vertical beams attached to the horizontal beams via mounting brackets, a perforated press board attached to the vertical beams via a board attachment plate, and the horizontal beams and the vertical beams. A sound-absorbing material, which is arranged in a frame formed by beams and is arranged while maintaining an air layer between it and the inner wall of the building,
The frame structure of the sound absorbing material, wherein the horizontal beam is adjusted in distance from the inner wall of the building according to the thickness of the air layer between the inner wall and the sound absorbing material.