CN1506540A - Detachable and movable sound isolating room for concrete stirrer - Google Patents
Detachable and movable sound isolating room for concrete stirrer Download PDFInfo
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- CN1506540A CN1506540A CNA021485429A CN02148542A CN1506540A CN 1506540 A CN1506540 A CN 1506540A CN A021485429 A CNA021485429 A CN A021485429A CN 02148542 A CN02148542 A CN 02148542A CN 1506540 A CN1506540 A CN 1506540A
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Abstract
The present invention features that the detachable and movable sound isolating room around the concrete stirrer is a movable room assembled with sound isolating wall boards, sound isolating top boards and sound isolating door leaf. Setting concrete stirrer inside the movable room with excellent sound isolating effect can reduce transmitted noise greatly and may be used repeatedly to lower the cost. The present invention makes the stirrer shielded from wind and sunlight to prolong service life.
Description
Technical field:
The present invention relates to a kind of sound arrester.More specifically the say so sound arrester of concrete mixer.
Background technology:
Concrete mixer is that the small and medium construction building site is used for concrete and stirs the most frequently used building machinery, but the high-decibel noise that should machinery produces when stirring, and frequency is wide, severe contamination environment.
The mixer noise is made up of mechanical noise, electronic noise two parts.When mixer material loading system sends into the stirring of mixer taper mixing drum by a certain percentage to stone, sand, cement, water, sandstone mutually between, mutual friction mutually between sandstone and the barrel, clash into, evoke the large-area vibration of barrel, stir that noise is mainly derived from that concrete clashes into mutually, bump mutually between friction, concrete and the barrel.Not only radiation low-frequency noise of large-area vibration is the radiation high-frequency noise also, and the mixer impact noise is about about 95dB (A).When stone, Sha Heshui enter mixing drum and begin to stir, the noise maximum, noise slightly descends when adding cement.In the transmission of power, contact surface is uneven in rolling process and sliding process between belt and the belt pulley, between the gear rubs on the other hand, and the noise that the transmission of power produces between these parts is about about 87dB (A).Above-mentioned what produced by solid vibration is mechanical noise, is the mixer main noise source.The noise of motor of mixer is less relatively, is about about 85dB (A).Mixer is open-air usually to be installed, and without any sound insulation, noise reduction measure, its noise far reaches outside hundred meters to external diffusion with almost having no to stop.Expose to the sun and rain and cause the drive disk assembly corrosion or lack the lubricated generation that has aggravated mechanical noise.Measure showing that 1 meter noise of mixer is about 95dB (A), is 87dB (A) apart from 10 meters external noises of sound source, is 79dB (A) outside 30 meters of sound sources.
Sound level and frequency characteristic about the mixer noise.
With HS6280 type noise spectrum analyzer JZC350 concrete mixer noise is carried out site-test analysis, the result is as shown in table 1, as can be seen the key property of concrete mixer noise:
1, concrete mixer noise A sound level reaches 95.2dB (A), be a kind of high-decibel, uneven noise, daytime, night position are respectively 70dB (A) and 55dB (A) in the standard value of construction field ground, sensitizing range boundary in the building operations boundary noise level limit (GB12523-90), then exceed standard respectively 25dB (A) and more than the 40dB (A) of mixer noise is seriously polluted.
Table 1 JZC350 type concrete mixer actual measurement noise spectrum (dB)
| Octave center frequency/Hz | ?63 | ?125 | ?250 | ?500 | ?1K | ?2K | ?4K | ?8K | The A sound level |
| Apart from 1 meter noise/dB of equipment | ?71 | ?77 | ?84 | ?95 | ?90 | ?88 | ?84 | ?75 | ?95.2 |
2, the concrete mixer noise frequency characteristic presents broadband, and in 250～4KHz scope, noise figure is higher, and at 500～1000Hz, noise figure is up to 90～95dB (A).
3, because the noise that mixer produces can have different noise figures when stirring plasticity or half-dried rigid concrete, can be different to the noise figure of the mixer actual measurement of each work, but frequency characteristic does not have too big variation.
Concrete mixer is the continuous more mobile plants of adjourn of a kind of needs.For this analogy taller and bigger and also integral body all be the equipment of noise source, relatively difficulty of conventional noise elimination equipment noise reduction is installed.Up to now, the noise problem of concrete mixer is unresolved all the time.
Summary of the invention:
Technical problem to be solved by this invention is to avoid existing weak point in the above-mentioned prior art, at mixer install in the open, volume is tall and big, the characteristics of continuous input and output material, and the removable mobile assembling sound insulation of a kind of concrete mixer room is provided.Should obtain good noise reduction, be convenient to construction again, make things convenient for input and output material.
The technical scheme that technical solution problem of the present invention is adopted is:
Design feature of the present invention is: described sound insulation room is the peripheral prefabricated house formula noise insulation equipment that is assembled with removable structure by noise barrier panel, top board and sound insulation door leaf that is provided with in the mixer workspace.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, according to the noise source characteristic of concrete mixer, and tall and big at the concrete mixer volume, constantly pass in and out material, the present invention adopts prefabricated house formula noise insulation equipment, concrete mixer is arranged in the prefabricated house with good soundproof effect, reach the effect of sound insulation, controlled propagation of noise greatly.
2, the removable structure of the present invention makes it reusable, greatly reduces equipment cost.
3, using the present invention that mixer is exempted from exposes to the weather, has prolonged the life-span that made of equipment.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a sound insulation lamination layer structure schematic diagram of the present invention.
Fig. 3 is the removable draw bail schematic diagram of the present invention.
The specific embodiment:
Referring to Fig. 1, the sound insulation room in the present embodiment is peripheral prefabricated house formula noise insulation equipment that be provided with, that assembled with removable structure by noise barrier panel 1, sound insulation top board 2 and sound insulation door leaf 3 in the workspace of mixer 9.At JZC350 type concrete mixer, the planar dimension of this prefabricated house formula noise insulation equipment can be 8000*3700mm, and height is 4000mm.Wherein, it is the frame construction of support that noise barrier panel 1, sound insulation top board 2 and sound insulation door leaf 3 all adopt with pipe steel or angle steel, adopts removable connection, and each support has interchangeability on form of structure.
Referring to Fig. 2, Fig. 3, in order to make structure higher sound absorption coefficient be arranged at 500～1000Hz centre frequency scope place, the noise barrier panel 1 of frame construction, sound insulation top board 2 and sound insulation door leaf 3 adopt the complex sound insulation layer, the compound level of its ecto-entad is: galvanized steel flaggy 4, absorbent treatment 5, armour layer 6 and zinc-plated perforation flaggy 7, interlayer is provided with rough ground 10.At the characteristics of the mechanical noise of concrete mixer, inhale in this composite bed adopts outer every noise reduction measure, greatly reduce indoor reverberation sound, improved the sound absorption ability of wall, controlled the propagation of noise approach greatly.
In concrete the enforcement, the thickness of zinc-plated perforation flaggy 7 be 1mm, its aperture be Φ 50mm, perforated percentage greater than 22%, can improve the sound absorption coefficient (not considering the resonance effect) of low frequency.Armour layer 6 adopts slim glass fabric, can improve the sound absorption coefficient of intermediate frequency.Absorbent treatment 5 adopts 25Kg/m
3The alkali-free super glass wool, thickness is 80mm.The average sound absorption coefficient of sound absorption construction part is 0.77.In fact perforated plate, slim glass fabric and alkali-free super glass wool have constituted a kind of compound sound-absorption structural, and this compound sound-absorption structural and outermost layer 2mm steel plate have constituted compound sound insulating structure again.Because the layered material impedance has nothing in common with each other, sound wave is repeatedly reflection on each aspect, porous sound-absorbing material makes sound attenuating, resonance and coincidence effect have been weakened, this sandwich construction can stagger and resonate and critical coincidence frequency, improved the sound insulation factor frequency low ebb effect of resonance region, improved total sound insulation factor with the district that coincide.
Referring to Fig. 3, adjacent plate can be as shown in Figure 3 " L " shape splicing construction, also can be other intercalation structure, in order to guarantee the soundproof effect of splicing place, weather strip 11 can be set at the stitching position place.
Fig. 1 illustrates, and sound insulation door leaf 3 comprises feeding gate and discharge door, lays respectively at the charging aperture and the discharging opening corresponding position of mixer 9.Decide according to the input and output material mode its size and position.When the noise reduction standard-required is comparatively loose, the sound insulation door leaf can be set; Or operation for convenience, directly the sound insulation door leaf is opened wide.
In order to improve its water resistance, in concrete the enforcement, sound insulation top board 2 should be set to have the waterproof slope.
In order to improve the ventilation effect in the sound insulation room, improve operating condition, can on the noise barrier panel 1 of sound insulation room one side, ventilation noise elimination passage 8 be set.Can be designed to natural ventilation or mechanical forced ventilation as required.
Application example and noise reduction
The present invention near esidential building, has been used in the building site, Hefei City, and the concrete mixer type is JZC350.Test result comprises: the 4 meters noise figures in sound insulation back, room are that 63dB (A), 4 meters, the 8 meters noise figures in sound insulation both sides, room are 64～69dB (A), can satisfy 70 decibels construction noise pollution boundary standard on daytime.And at sound insulation 15 meters, back, room, and the noise figure at its 25 meters, side is respectively 53dB (A) and 50dB (A), can satisfy the requirement of construction noise pollution boundary standard noise 55dB at night (A).For sound insulation 15 meters positions, back, room, be provided with the different situations that the sound insulation room is not set under noise figure be determined as: the 74.2dB (A) of 50dB (A), insert loss and be 24.2dB (A).
Test result shows: the present invention is owing to take the sound absorption composite construction, in whole noise broad frequency range, good noise reduction is arranged all, in 4 meters and 15 meters positions, side at the turnover bin gate back side, mean transmission loss is 25～30dB (A), uses the concrete mixer noise not exceed standard by day; In like manner reach more than the 24.2dB (A) in the 15 meters noise reductions with 25 meters, side in the sound insulation back side, room, it is up to standard when using night to satisfy concrete mixer.
Claims (7)
1, the removable mobile assembling sound insulation of concrete mixer room is characterized in that: described sound insulation room is the peripheral prefabricated house formula noise insulation equipment that is assembled with removable structure by noise barrier panel (1), sound insulation top board (2) and sound insulation door leaf (3) that is provided with in the mixer workspace.
2, the removable mobile assembling sound insulation of concrete mixer according to claim 1 room, it is characterized in that it is the frame construction of support that described noise barrier panel (1), sound insulation top board (2) and sound insulation door leaf (3) all adopt with pipe steel or angle steel, described each support has interchangeability on form of structure.
3, the removable mobile assembling sound insulation of concrete mixer according to claim 2 room, the noise barrier panel (1), sound insulation top board (2) and the sound insulation door leaf (3) that it is characterized in that described frame construction have the sound insulation composite bed, and the compound level of its ecto-entad is: galvanized steel flaggy (4), absorbent treatment (5), armour layer (6) and zinc-plated perforation flaggy (7).
4, the removable mobile assembling sound insulation of concrete mixer according to claim 3 room is characterized in that described zinc-plated perforation flaggy (7) thickness is that 1mm, its aperture are that Φ 50mm, perforated percentage are greater than 22%; Described absorbent treatment (5) is for adopting 25Kg/m
3The alkali-free super glass wool, thickness is 80mm; Described armour layer (6) adopts slim glass fabric; The thickness of described galvanized steel flaggy (4) is 2mm.
5, the removable mobile assembling sound insulation of concrete mixer according to claim 1 room is characterized in that described sound insulation door leaf (3) comprises feeding gate and discharge door, lays respectively at mixer charging aperture and discharging opening corresponding position.
6, the removable mobile assembling sound insulation of concrete mixer according to claim 1 room is characterized in that described sound insulation top board (2) has the waterproof slope.
7, the removable mobile assembling sound insulation of concrete mixer according to claim 1 room is characterized in that on the noise barrier panel (1) of described sound insulation room one side ventilation noise elimination passage (8) being set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021485429A CN1194152C (en) | 2002-12-11 | 2002-12-11 | Detachable and movable sound isolating room for concrete stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021485429A CN1194152C (en) | 2002-12-11 | 2002-12-11 | Detachable and movable sound isolating room for concrete stirrer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1506540A true CN1506540A (en) | 2004-06-23 |
| CN1194152C CN1194152C (en) | 2005-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021485429A Expired - Fee Related CN1194152C (en) | 2002-12-11 | 2002-12-11 | Detachable and movable sound isolating room for concrete stirrer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493686A (en) * | 2011-12-12 | 2012-06-13 | 权岚 | Separated movable sound insulation house |
| CN103453613A (en) * | 2013-09-13 | 2013-12-18 | 苏州岸肯电子科技有限公司 | Ventilation mechanism of anechoic room |
| CN103669625A (en) * | 2013-12-03 | 2014-03-26 | 厦门嘉达声学技术有限公司 | Modularly-assembled acoustic enclosure |
| CN106812354A (en) * | 2015-11-30 | 2017-06-09 | 湖南衡泰机械科技有限公司 | A kind of lathe sound insulation house |
| CN114086799A (en) * | 2021-11-18 | 2022-02-25 | 深圳市航天新材科技有限公司 | Comprehensive treatment system for noise of construction site operation vehicle |
-
2002
- 2002-12-11 CN CNB021485429A patent/CN1194152C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493686A (en) * | 2011-12-12 | 2012-06-13 | 权岚 | Separated movable sound insulation house |
| CN102493686B (en) * | 2011-12-12 | 2014-07-09 | 权岚 | Separated movable sound insulation house |
| CN103453613A (en) * | 2013-09-13 | 2013-12-18 | 苏州岸肯电子科技有限公司 | Ventilation mechanism of anechoic room |
| CN103453613B (en) * | 2013-09-13 | 2016-05-04 | 苏州岸肯电子科技有限公司 | The ventilating mechanisms of anechoic chamber |
| CN103669625A (en) * | 2013-12-03 | 2014-03-26 | 厦门嘉达声学技术有限公司 | Modularly-assembled acoustic enclosure |
| CN103669625B (en) * | 2013-12-03 | 2016-04-13 | 厦门嘉达声学技术有限公司 | Modular assembly type sound insulation enclosure |
| CN106812354A (en) * | 2015-11-30 | 2017-06-09 | 湖南衡泰机械科技有限公司 | A kind of lathe sound insulation house |
| CN114086799A (en) * | 2021-11-18 | 2022-02-25 | 深圳市航天新材科技有限公司 | Comprehensive treatment system for noise of construction site operation vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194152C (en) | 2005-03-23 |
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