CN113981847A

CN113981847A - Sound barrier sound absorption cap

Info

Publication number: CN113981847A
Application number: CN202111274008.3A
Authority: CN
Inventors: 孟新利; 王高峰
Original assignee: Shanxi Shangfeng Wind Suppression Wall Technology Co ltd
Current assignee: Shanxi Shangfeng Wind Suppression Wall Technology Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-01-28

Abstract

A sound barrier sound absorption cap comprises a pore plate, an end plate, a sound absorption and insulation core, Z-shaped steel, a support and steel stand columns, and is characterized in that a lower buckling beam of the sound absorption and insulation core is arranged on the Z-shaped steel; the perforated plate is covered on the sound absorption and insulation core, and the lower part of the perforated plate is arranged on the Z-shaped steel; the end plates are respectively connected and fixed with the top surface of the buckling beam at the lower part of the sound absorption and insulation core and the sides of the pore plate at the two ends of the sound absorption and insulation core, the supports are welded on the two flanges at the top of the steel upright post, and the Z-shaped steel is fixed on the supports. The invention can effectively absorb top diffraction sound, so that the diffraction sound energy is diffused and attenuated, and the noise reduction effect is obviously improved.

Description

Sound barrier sound absorption cap

Technical Field

The invention relates to a silencing device, in particular to a sound barrier sound absorption cap.

Background

With the rapid development of urban traffic elevated roads and expressways, noise interference of traffic vehicles to residents on both sides of the roads is increasingly serious along with the increase of urban vehicles, and with the improvement of living standard, the requirements of people on noise are higher and higher. For this purpose, sound insulation barriers are usually provided on both sides of the road. At present, most of the commonly used sound insulation barriers adopt an upright form, and the sound insulation and noise reduction effects are poor. The top diffraction sound is greatly influenced and is a part which is difficult to process, the transmission of the top diffraction sound can be improved by increasing the height, but the influences of nearby lighting, construction cost, urban landscape and the like are that the most important is that the height of the sound barrier is too high, the safety is reduced, and the height of the sound insulation barrier is limited.

Disclosure of Invention

The sound barrier sound absorption cap provided by the invention can effectively absorb top diffraction sound, so that the diffraction sound energy is diffused and attenuated, and the noise reduction effect is obviously improved.

A sound barrier sound absorption cap comprises a pore plate, an end plate, a sound absorption and insulation core, Z-shaped steel, a support and steel stand columns, and is characterized in that a lower buckling beam of the sound absorption and insulation core is arranged on the Z-shaped steel; the perforated plate is covered on the sound absorption and insulation core, and the lower part of the perforated plate is arranged on the Z-shaped steel; the end plates are respectively connected and fixed with the top surface of the buckling beam at the lower part of the sound absorption and insulation core and the sides of the pore plate at the two ends of the sound absorption and insulation core, the supports are welded on the two flanges at the top of the steel upright post, and the Z-shaped steel is fixed on the supports.

The pore plate is formed by pressing an aluminum plate into 3 semicircular and symmetrical arrangement, and through holes with the aperture of 3mm are uniformly distributed on the pore plate.

The end plate has the same shape structure and material as the pore plate, and has the function of plugging the end of the pore plate.

Inhale the sound insulation core by sound absorption point, sound insulation box, detain the roof beam and constitute, detain the roof beam mouth down, the sound insulation box is installed and is detained the middle part on the roof beam and perpendicular, two facades at sound insulation box are installed to sound absorption point symmetry, from the top down distribution.

The buckling beam is a groove-shaped fastener made of thin plates, and the width of a groove opening corresponds to that of the steel upright post. Is the primary load-bearing structure of the acoustic core.

The sound insulation box is cuboid, and is provided with a uniform-distribution hole on one surface, and sound absorption cotton is filled in the sound insulation box.

The invention has the beneficial effects that: the invention can effectively absorb top diffraction sound, so that the diffraction sound energy is diffused and attenuated, and the noise reduction effect is obviously improved.

Drawings

FIG. 1 is a side view of a sound barrier acoustical cap of the present invention;

FIG. 2 is an elevational view of a sound barrier acoustical cap of the present invention;

FIG. 3 is a cross-sectional view of a sound barrier acoustical cap of the present invention;

FIG. 4 is a cross-sectional view of a sound absorbing and insulating core of a sound absorbing cap of a sound barrier according to the present invention;

FIG. 5 is a view of an orifice plate of a sound barrier acoustical cap of the present invention;

FIG. 6 is a view of an end plate of a sound absorption cap of a sound barrier of the present invention;

in the figure: the sound absorption and insulation structure comprises a 1-pore plate, 2-end plates, 3-sound absorption and insulation core, 4-bolts, 5-Z-shaped steel, 6-supports, 7-steel upright posts, 31-sound absorption tips, 32-sound insulation boxes and 33-buckling beams.

Detailed Description

Fig. 1 and 2 show a sound-absorbing cap of sound barrier, which is 2 meters long and 0.5 meter high and is installed on the top of the high-speed railway sound barrier. The sound absorption and insulation core comprises a pore plate 1, an end plate 2, a sound absorption and insulation core 3, Z-shaped steel 5, a support 6 and a steel upright post 7.

The lower buckling beam of the sound absorption and insulation core 3 is arranged on the Z-shaped steel 5; the pore plate 1 covers the sound absorption and insulation core 3, and the lower part of the pore plate 1 is arranged on the Z-shaped steel 5; the end plates 2 are arranged at two ends of the sound absorption and insulation core 3 and are respectively connected and fixed with the top surface of the lower buckling beam of the sound absorption and insulation core 3 and the sides of the pore plate. Brackets 6 are welded on two flanges at the top of the steel column 7, and the Z-shaped steel 5 is seated on the brackets 6 and screwed down by using bolts 4.

As shown in fig. 5, the orifice plate 1 is formed by pressing 1.5mm aluminum plate into 3 semicircular plates with 180mm diameter and symmetrically arranged, and through holes with 3mm aperture are uniformly distributed on the orifice plate.

As shown in figure 6, the shape structure of the end plate 2 is consistent with the end face of the pore plate, the material is consistent with the pore plate, the end of the pore plate is sealed, the rigidity of the pore plate is enhanced, and the stability is improved.

As shown in fig. 4, the sound absorption and insulation core 3 is composed of a sound absorption tip 31, a sound insulation box 32 and a buckling beam 33. The buckling beam 33 is open downwards, the sound insulation box 32 is vertically arranged in the middle of the buckling beam 33, and the sound absorption tips 31 are symmetrically arranged on two side faces of the sound insulation box 32 and distributed from top to bottom.

The buckle beam 33 is a 180X 50mm groove-shaped fastener made of 1.5mm aluminum plate, and the width of the groove opening corresponds to that of the steel upright post.

The sound insulation box 32 is a 1960X 300X 50mm cube and is made of an aluminum plate, a hole with the diameter of 3mm is formed in one vertical face, a hole is not formed in the other vertical face, and 48kg/m of sound absorption glass wool for carrying out high speed plantation is filled inside the sound insulation box.

The cross-section of sound absorption point 31 is triangle-shaped, the inner chamber fills the sound absorption cotton, and the surface is perforated, and 3 sound absorption points are installed to the both sides of sound insulation box all range, and 3 sound absorption points highly different, sound absorption point increase the performance of sound absorption through different closed angle height.

The Z-shaped steel is formed by pressing a thin steel plate, bears the weight of the upper structure and is connected with the lower support.

The support bracket is made of angle steel, has the length of 175mm, and is welded on the steel upright post.

The steel upright post is made of H-shaped steel, and the sound absorption cap is arranged on the steel upright post.

Claims

1. A sound barrier sound absorption cap comprises a pore plate, an end plate, a sound absorption and insulation core, Z-shaped steel, a support and a steel upright post; the lower buckling beam of the sound absorption and insulation core is arranged on the Z-shaped steel; the perforated plate is covered on the sound absorption and insulation core, and the lower part of the perforated plate is also arranged on the Z-shaped steel; the end plates are arranged at two ends of the sound absorption and insulation core and are respectively connected and fixed with the top surface of the buckling beam at the lower part of the sound absorption and insulation core and the sides of the pore plate, the supports are welded on two flanges at the top of the steel upright post, and the Z-shaped steel is fixed on the supports.

2. The sound barrier cap as claimed in claim 1, wherein the sound absorption and insulation core comprises a sound absorption tip, a sound insulation box and a buckling beam, the opening of the buckling beam faces downwards, the sound insulation box is arranged in the middle of the buckling beam and is vertical, and the sound absorption tip is symmetrically arranged on two vertical surfaces of the sound insulation box and is distributed from top to bottom.