WO2020058189A1 - Device for preventing sound transmission through an aperture or a production-related duct in a wall, and a method for soundtight closure of an aperture or a production-related duct in a wall - Google Patents

Abstract

The device for preventing sound transmission through a spacer tube, an aperture or a duct (1) can be realized by inserting a damping body (21) which can be cost-effectively mass-produced and can be inserted through the apertures in the wall (15) without any effort and with correspondingly low cost. There is no need for laborious plugging with rock wool or liquid mortar.

Description

Device for preventing sound transmission through an opening or a production-related duct in a wall and a method for soundproof closing an opening or one

production-related duct in a wall

The invention relates to a device for

Prevention of sound transmission through an opening or a production-related duct in a wall according to the preamble of claim 1. The invention further relates to a method for soundproof closing an opening or one

Manufacturing-related duct in a wall according to the preamble of claim 11.

When creating walls from concrete with

Large-area formwork, it is necessary to keep the formwork panels forming the formwork at a precise distance from each other and to absorb the pressure generated by the liquid concrete with tie rods. For this purpose, spacer tubes are used between the two formwork panels forming the formwork for the wall to be created. The length of these spacer tubes corresponds to the thickness of the wall with the end pieces attached at their ends. Through the distance tubes and also through the adjacent ones Formwork panels are led through the tie rods.

Nuts are placed on the free ends of the tension rods, which protrude beyond the outer skin of the formwork panels. After the concrete mass has hardened and the formwork panels and tie rods removed, passages or openings remain in the freshly created wall, which connect the two surfaces of the wall. The two openings of these passages are usually closed by plastic pins.

 In residential construction, where high demands are placed on noise protection and sound insulation, these cavities form sound bridges between the two locking plugs. In concrete stairwells, for example, the footsteps and voice sounds generated there penetrate the walls and disturb people in living rooms in the adjacent apartments or offices.

 It is known from the prior art, in such

In cases or in areas where no sound transmission may occur, either fill the cavities with rock wool or fill them with cement or mortar. Both approaches are very labor intensive and, if not done carefully and without an air gap, the

Sound continues to penetrate the wall. With mortar

filled spacer tubes are after the hardening of the

Mortar due to its shrinkage again permeable to sound. An object of the present invention is to provide a device with which the sound transmission through spacer pipes in concrete walls or through other channels in the wall or through openings in the manufacture of concrete walls

is prevented. The degree of prevention of the

Sound transmission must be at least that value

correspond to that of the surrounding wall area of the

Distance tubes enabled.

 Another object of the invention is to provide a device that is inexpensive to manufacture and use

low workload can be used.

 Another task is to create one

Process that simplifies the closing of the sound-conducting area of the spacer tube.

 Another object is to create a device which can be used in pipes with large fluctuations in the

Inner diameter is soundproof.

This object is achieved by a device according to the features of claim 1 and a method according to claim 11. Advantageous embodiments of the

Device are described in the dependent claims.

According to the invention, a device for

Prevention of sound transmission, e.g. through a Spacer tube made of plastic, concrete or steel for

Tension bars and other manufacturing-related areas provided on concrete structures, in which after the completion of the concrete wall, a sound-absorbing material is introduced into the spacer tube or into the openings of different cross-sections, the sound-absorbing material as

prefabricated cone-shaped or rod-shaped insulating body and is designed to be insertable into the opening or channel.

 The device is further characterized in that the sound-absorbing material in a pipe or

tubular jacket is embedded, which jacket can be inserted into the opening. The insertion of the

Device can be done without tools and minimal time.

The device is further characterized in that concrete, mortar, fibrous material, foam or solid plastic or a material that absorbs noise is used as the sound-absorbing material.

 In particular, the tubular or tubular jacket can comprise a winding tube made of paper or plastic, a tube or a tube. In the case of a winding tube made of paper, this can be inserted into the opening before being inserted

be moistened so that after pushing in If the paper swells, the device is clamped in the opening without an air gap.

 The rod-shaped insulating body preferably has a length which corresponds to the length of the opening or is shorter than the opening, the area which is not blocked being closed off by end caps or pins. With a precisely specified length, maximum sound insulation can be achieved.

 A maximum of sound insulation can also be achieved with an extremely sound-absorbing material if this element is made shorter as a cylinder or a differently shaped element and the spacer tube is closed at its ends by two conventional locking pins.

 In a particularly advantageous embodiment of the

The insulating body is attached to a locking pin for closing the insulated spacer pipe.

In the case of a device which is connected to the locking pin, this does not necessarily result in a

additional need for action, since when inserting the locking pin into the end of the

Spacer pipe the sound insulation is guaranteed.

In another preferred embodiment of the invention, the closure pins for closing the

Spacer tubes attached rod-shaped insulating body or formed as part of the locking pin, the Insulation bodies can be shorter than the spacer pipe.

The front end of the insulating body or locking pin is preferably tapered. The remaining part is slightly larger than the cross section of the

occlusive breakthrough to ensure a safe

to get airtight and soundproof closure. The outer surface of the insulating body or locking pin can comprise additional circumferential lamellae, ribs or O-rings that allow sound to pass through

Prevent labyrinthine training safely.

 In a further special embodiment of the insulating body, its surface can be coated with flocking or a foam rubber coating, and thereby the

Formation of a gap between the spacer tube and the insulating body can be compensated. Instead of flocking, the surface can also be coated with a very soft plastic or a foam in order to achieve the same goal, namely the consequent prevention of an air gap.

 If the locking pins are made directly with sound-absorbing material, additional time and cost savings can be made and it is also ensured that there are no spacer tubes without soundproofing.

The rod-shaped insulating bodies are preferred on the

Pre-fabricated to measure the usual thickness of walls. Alternatively, rod-shaped insulating bodies can be produced in greater lengths and cut to size on the construction site before insertion into the opening or, if longer pieces are inserted, the protruding areas can be cut off or cut off. When using rod-shaped insulating bodies that are longer than the thickness of the wall, the logistics are simplified because the correspondingly cut insulating bodies do not have to be ordered and provided in advance, but are adapted to the thickness of the wall as required.

 The rod-shaped insulating bodies can be prefabricated automatically and therefore manufactured inexpensively and are light and in the required quantities

Construction site portable.

 When using wrapping tubes made of paper, these or a soft coating applied to them can be briefly moistened before being inserted into the spacer bars, so that the paper swells to make it more dense

Closure of the breakthrough can be achieved.

The prefabricated rod-shaped insulating bodies can also be moved by inexperienced auxiliary personnel and nevertheless optimal sound insulation can be achieved without having to practice complicated procedural steps. An embodiment of an opening or channel, the invention is explained in more detail using a spacer tube.

1 shows an arrangement of a spacer tube between two formwork panels with an inserted tensioning rod according to the prior art,

Figure 2 shows a first embodiment of a

 Insulating body to prevent sound transmission,

 3 shows a further embodiment of a spacer tube with detachable end pieces,

 FIG. 4 shows a cross section through a wall made of concrete after stripping,

Figure 5 shows a cross section through the wall

 FIG. 4 with the sound-absorbing and sound-absorbing insulating body inserted,

 FIG. 6 shows a cross section through the wall with a sound-absorbing insulating body made of a winding tube with a filling made of concrete or mortar,

 Figure 7 shows a cross section through a wall with a

 Spacer tube, which is closed on both sides with locking pins and an insulating body in between,

 Figure 8 different caps for

Closing the open ends of the Spacer tubes on the finished wall with and without a rod-shaped

 sound-absorbing insulating body.

FIG. 1 shows a spacer tube 1 known from the prior art, comprising an essentially cylindrical guide tube 3 with an inner one

Shell surface 13 and an outer shell surface 15 as well as two end pieces 5 arranged at the front ends of the guide tube 3. The end pieces 5 are inserted into the guide tube 3 in this known spacer tube 1 according to FIG. They comprise a conical jacket 7, which comes to lie outside the guide tube 3, a cylindrical section 9. The two end pieces 5 are inserted into the guide tube 3 between two formwork panels 11 before being inserted. Merging the

End pieces 5 with the guide tube 3 can be made at the manufacturer or on site. This assembly work is usually done on site. The end pieces 5 can initially be completely or only partially inserted; however, as soon as a tie rod 12 is inserted into the guide tube 3 and the formwork panels 11 are pressed against the spacer tube 1 with nuts (not shown in FIG. 1) placed on the end face, the slide

cylindrical portions of the end pieces 5 completely into the guide tube 3. After mutual tension between the two

Formwork panels 11 and the necessary reinforcing iron, the space between the formwork panels 11 can be filled with liquid concrete. The formwork panels remain on the wall until it is at least partially cured.

 After curing, the formwork panels 11 can be removed after loosening the nuts on the tie rods 12 and the tie rods 12 can be removed from the spacer tubes 1. The end pieces 5 are also removed by

Pulling out of the surface of the finished wall 15. What remains are frusto-conical depressions 21 in the surface of the wall 15 and cylindrical spaces connecting the two surfaces of the wall 15.

In order to prevent the passage of sound through the passages from one side to the other of the wall 15, the material which is intended to insulate the sound is introduced as a rod-shaped insulating body 21. In a first embodiment according to FIG. 5, a cylindrical insulating body 21, as shown in FIG. 2, which is shorter than the length of the guide tube 3, is inserted into the latter

pushed in. The length of the insulating body 21 is dimensioned such that it is still on each side

Locking pin 25 can be inserted into the guide tube 3 and thus the frustoconical recess 23 can be closed aesthetically clean. The rod-shaped Insulating body 21 can consist of concrete or mortar or of another, sound-absorbing or non-sound-conducting material such as plastic, harder

Foam or a pressed material that

preferably does not absorb water and

is moisture resistant.

In a further embodiment, the insulating body 21 comprises a sleeve 25 made of cardboard, preferably a winding sleeve made of paper, the interior 29 of which is made of mortar, concrete or another suitable sound-absorbing material

is filled (Fig. 3). The sleeve 27 can also consist of a closed-cell rigid foam or a hose

consist .

In a partial cross section through the wall 15 according to FIG. 4, designated with reference symbol 3, is the guide tube

shown. On both ends of the guide tube 3, the conical indentations of the pin regions 19 can be seen, which after the end pieces 5 have been removed

have become visible. It can also be seen that there is now a direct connection from both sides of the wall 15 through the interior of the guide tube 3 and consequently any sound, no matter how thick, can penetrate the wall 15 unhindered. This cylindrical space 17, which has a diameter of the order of 20 mm to 36 mm with a tolerance of up to 3 mm, as mentioned at the beginning, so far with rock wool

filled in, i.e. The rock wool has to be manually stuffed into these narrow channels up to several meters long in power plants.

 In another known embodiment (Fig. 5) in this horizontally extending narrow space concrete or

Mortar filled. This is complex and, above all, the 100% filling or seal is hardly achieved, since after curing through shrinking, a narrow gap already lets noise through.

 FIG. 6 now shows an embodiment of a

Insulating body 21 according to the invention, the axially in the

Guide tube 3 has been inserted. The diameter of the insulating body 21 has an outer diameter which lies airtight on the inner diameter of the guide tube 3 and is consequently somewhat larger than the inner diameter of the guide tube or breakthrough channel and has a conical end. The insulating body 21 can be shorter than the guide tube 3 in order to be able to use a locking pin 25 on both sides, which, held in the end regions of the guide tube 3, the

complete or

partially filled in to satisfy the aesthetics, also to remove the visible remains of the spacer tube. The locking pin 25 will be described later. In a further embodiment of the insulating body 21, this comprises a sleeve 27, for example made of cardboard or

Paper or another inexpensive material in which concrete, cement, mortar, insulating foam or a plastic mass is filled. The diameter of the sleeve 27 is dimensioned so that it is easy to insert. If the sleeve 27, if it is made of paper, has been briefly moistened beforehand, it expands after being inserted into the guide tube 3. The pin region 19 is closed as described for FIG. 5.

Of course, the recess could also be filled with mortar instead of a locking pin 25.

The inserted insulating body 21 can ensure that the sound penetrating the spacer tube 1 is at least not greater than that which penetrates the surrounding wall, that is to say there is no longer a sound bridge.

Further designs of the insulating body 21 are shown in FIG. 8. The insulating body 21 is either on

Locking pin 25 in a corresponding receptacle

inserted and protrudes after putting on the

Locking pin 25 inside the guide tube 3 (Fig. 8b and 8d). The length of the insulating body 21, which on

Locking pin 25 is attached, is preferably slightly less than half the thickness of the wall 15. If a particularly well-insulating material for the insulating body 21st used, the length can be much less than half the thickness of the wall 15.

 In a further embodiment, the closure pin 25 shown in FIG. 8c can consist entirely of the material used for the insulating body 21, i.e. the conical pin region 19 is not made of plastic, but of the same material as the insulating body 21, e.g. made of concrete, mortar, plastic or another sound-absorbing or sound-absorbing material.

 With such locking pins, the passage of sound through the

Spacer tube 1 can be prevented. The position of the locking pin 25 shown in FIG. 8a can be seen in FIG. 7 on the left side.

 Figures 8c and 8d show a sunken

Locking pin with noise insulation. Such

Locking pins 19 also serve to close the ends of the spacer tube 1, if between the

Locking pin 25 in the center of the spacer tube 1, no insulating body 21 is inserted.

In a further embodiment, circumferential lamellae 26 can be formed on the closure pin 25 for a tight closure with the opening. The fins 26 act as a labyrinth and consequently the fins 26 do not have to lie snugly against the spacer tube 1. Of course you can the outer surface of the spacer tubes 1 and fins 26 and, for example, flocking can be combined.

Analogous to the prevention of sound transmission through a spacer tube 1, the insulating bodies can, of course, also have a corresponding geometric shape

Sound insulation or sound absorption in openings in walls in which no pipes have been used,

Find application.

Claims

Claims 1. Device for preventing the transmission of sound through an opening or channel for tie rods (12) in a wall (15) of concrete structures, in which after the completion of the wall (15) in the  Breakthrough (1) a sound absorbing material  is introduced  characterized in that  the sound-absorbing or sound-absorbing material is designed as an insulating body (21) which can be inserted into the opening. 2. Device according to claim 1, characterized in that the sound absorbing or sound absorbing Material is embedded in a tubular sleeve (27) or a tubular element, which element (27) can be inserted into the opening. 3. Device according to claim 1, characterized in that concrete, mortar, fibrous material, foam or plastic is used in a sleeve (27) as the sound-absorbing material. 4. The device according to claim 3, characterized in that the tubular or tubular sleeve (27) Winding tube made of paper or plastic or a  Includes hose or tube. 5. Device according to one of claims 1 to 4, characterized in that the insulating body (21) has a length which is the same or shorter than the length of the opening. 6. The device according to claim 5, characterized in that the insulating body (21) on a locking pin (25) for closing the opening (1) is attached. 7. The device according to claim 6, characterized in that the closure pin (25) for closing the Opening (1) as part of the insulating body (21)  is formed, the insulating body (21) being shorter than the length of the opening (1) or that on  Insulation body (21) at least on one side  Locking pin (25) is formed. 8. The device according to claim 6, characterized in that the closure pin (25) completely insulating or sound absorbing material. Apparatus according to claim 6, characterized in that circumferential lamellae (26) are formed on the locking pin (25) and / or on the sleeve (27). 1 0. Device according to one of claims 2 to 9, characterized in that a flocking or a foam covering is applied to the jacket of the sleeve (27). 1 1. Method for soundproof closing a  Breakthrough in a wall (15) made of concrete, characterized in that after concreting from one or both sides of the wall (15) one on the  Insulated body (21) in air-tight manner according to one of claims 1 to 10 is inserted inside the opening.