JP4894338B2 - Mobile soundproof fence - Google Patents

Description

  The present invention relates to a mobile soundproof fence used for reducing noise associated with construction work or civil engineering work.

  Construction work and civil engineering work must be carried out with sufficient consideration so as not to damage the living environment of the residents in the surrounding area, etc. The noise is loud and a wide variety of noises are generated. For example, excavators, hand breakers, cutting machines, dump trucks, stationary machines (generators, compressors, welding machines), etc. are used for pavement cutting removal in road demolition work. There is a need to reduce.

  In the cutting machine, there are an engine sound (99 dB), an intake sound (107 dB), an exhaust sound, a running sound, a cutting sound (103 dB), a sanding sound, a conveyor sound, a loading sound, and the like. In the hand breaker, there is a hitting sound and a crushing sound (102 dB at a position 5 m away from the work point). In the excavator, there are engine sound, exhaust sound, excavation sound and loading sound. In dump trucks, there are engine sounds, exhaust sounds, inducer's ringing sounds, and so on. In stationary machines, there are engine noise and exhaust noise.

  Of these noises, individual measures such as electrification for engine sounds, use of high-performance mufflers for exhaust sounds, and use of low-noise conveyors and passive soundproofing materials for conveyor sounds. Although it is possible, the overall sound insulation using the sound insulation panel is more effective than the individual countermeasures against cutting sound, soiling sound, impact sound and crushing sound.

  As for the cutting machine, a soundproof panel set measure that surrounds the outer periphery of the cutting machine with a soundproof panel can be considered. Soundproofing panels with soundproofing panels are arranged on all sides of the cutting machine, set on the cutting machine itself via brackets, and moved along with the movement of the cutting machine. A so-called active silencer is installed on the top of the soundproofing so as to reduce the noise with a sound of opposite phase, and the noise that diffracts the upper end of the soundproofing is reduced. The lower part of the soundproofing saddle is attached to the lower part of the fixed soundproofing panel fixed to the cutting machine body via a panel guide device so that it can move up and down freely. Raises and lowers relative to the fixed soundproofing panel, and performs sound insulation of the gap under the soundproofing cage.

  However, in the case of the soundproof panel set countermeasure of this cutting machine, since the entire outer periphery of the cutting machine is surrounded by a soundproofing fence, the visibility of the cutting machine operator is poor, the operability is poor, and there is a need for remote operation, etc. There is a problem. Moreover, since the opening part of the belt conveyor part is formed in the front soundproof box, it is necessary to provide an active silencer in this opening part to reduce noise emission from the opening part. In addition, a guide device for the floating soundproof panel is required at the lower part of the fixed soundproof panel, which causes problems such as a complicated device.

  As for the excavator and the dump truck, a mobile soundproof house countermeasure can be considered in which the outer periphery and the upper part are covered with a soundproof house made of a soundproof panel. A traveling mechanism is provided at the lower end portion of the soundproof house, and the excavator moves the excavator itself, and the dump truck uses the driving force of the rear cutting machine to move the soundproof house.

  However, in the case of this measure against a mobile soundproof house, since a roof is provided, it becomes a large-scale device, and a yard for temporary storage is required when evacuating after completion of construction. In addition, a dump truck for the excavator or an entrance / exit for the dump truck is required, and an active silencer is provided at the entrance / exit to reduce noise emission from the entrance / exit. In addition, a sound insulation device such as a floating sound insulation panel is required at the lower end of the movable sound insulation house.

  As for the hand breaker, it is possible to take measures against a mobile soundproof house covered with a simple soundproof house, but even a small house has a roof, so it becomes a relatively large device and needs to be moved using a crane. .

  Furthermore, in addition to the above measures, or alone, it may be possible to install fixed soundproof fences on both sides of the entire construction area, but there is a yard to be removed and temporarily placed when evacuating after construction. Necessary. In addition, a fixed soundproof fence may be installed only on one side of the specific building side, but since it is permanently installed, it cannot be removed when evacuating after completion of construction.

  There are Patent Documents 1 to 4 and Non-Patent Document 1 as prior art documents related to the present invention. Patent Document 1 relates to a mobile soundproof house. A soundproof panel is formed by surrounding a soundproof panel with a periphery and an upper surface thereof, and is self-propelled by wheels and a drive device, and can be grounded by a jack device. Patent Documents 2 to 4 and Non-Patent Document 1 relate to an active silencer, which creates an electrically soft surface (zero sound pressure) by active control using a speaker and a microphone, and also on the upper end of the wall. A speaker is attached and reduced by sound pressure interference, and these are effective for low frequency sound.

JP 09-86264 A JP 2003-055918 A JP 2001-172925 A JP 07-114390 A "Active soft edge sound insulation wall that silences sound with sound" Mitsubishi Heavy Industries Technical Review Vol.39 No.2 (2002-3)

  In the case of conventional noise countermeasures, as described above, there are problems such as hindering the operability of construction machines, increasing the size and complexity of soundproofing equipment, and requiring a yard for temporary placement.

  In order to solve such problems, the present applicant is required to reduce the noise caused by construction work and civil engineering work, etc. to a large-scale work from a single worker working with a relatively simple soundproof fence. It is possible to flexibly handle a wide range of soundproofing up to the construction using the work machines of this type, and to reduce a wide variety of noises including the low frequency range, and can be installed and removed in a shorter time. An application has already been filed for a mobile soundproofing system and a mobile soundproofing cage that can be easily moved and installed in accordance with the progress of construction (Japanese Patent Application No. 2005-169739).

  It is an object of the present invention to provide a mobile soundproofing enclosure that can efficiently improve the sound insulation performance of the soundproofing panel with a relatively simple configuration in the above-described mobile soundproofing system and mobile soundproofing fence.

The invention according to claim 1 of the present invention is arranged on at least one side of the periphery of the noise generation location, and has a soundproof range according to the noise generation location moving by the soundproof panel and the movable support frame that supports the soundproof panel. In a movable soundproof fence that can be changed, a soundproof panel version with a multi-layer structure composed of a soundproof panel and an air layer between the soundproof panels is established by placing the soundproof panel and the soundproof panel facing each other with a space therebetween. A square frame-shaped support frame is erected on the traveling mechanism, and a square frame-shaped suspension frame is suspended and supported on the outer surface of the support frame. panel upper connection member of the acoustic panel plate is supported by the timber, hanging mobile soundproof fence on the inner surface and the outer surface of the frame is a pair of acoustic panel, characterized in that it is arranged sorting A.

  For example, as shown in FIG. 1, the present invention has a double structure comprising two soundproof panels and an air layer between the panels by disposing the soundproof panels in parallel with a predetermined interval. The soundproof panel is formed by mounting the soundproof panel on the outer side of the support frame with the suspension means using the suspension frame and other means, and the soundproof panel has a double structure with the air layer in between. Can be efficiently increased with a relatively simple configuration. Not only a double structure but also a multiple structure more than a triple structure is possible.

  The mobile soundproof fence to which the present invention is applied can change the soundproof range by moving both the position and shape or only the position (moving the soundproof range or expanding / shrinking the soundproof range). It is. For example, as shown in FIG. 1, it is a flexible, simple and light planar structure in which a soundproof panel plate such as a double structure is attached to a lightweight frame frame that can be moved by a moving wheel, and is around all sides of the noise generation point. , Three-way or on both sides. In this case, both the position and shape can be changed, the soundproof range can be easily moved with the movement of the noise generation location, and the soundproof range can be easily expanded or reduced according to the type of noise generation location. it can. In addition, it can be assembled and disassembled by one worker, and can be easily installed and removed.

  Furthermore, the present invention can also be applied to the following linear or curved mobile soundproofing cages. For example, (1) a linear bellows-type soundproofing horn is composed of a soundproofing panel connected in a bellows shape and a support frame provided at the lower part of the bellows type soundproofing panel. It is arranged on at least one side around the noise generation location. (2) Linear accordion-type soundproof fence: It consists of a partial soundproof panel supported by a support frame and a bellows-shaped soundproof panel that connects the partial soundproof panels. It is arranged on at least one side around the noise generation location. (3) Linear crawler type soundproof fence: a movable soundproof fence, and a soundproof panel connected endlessly in an upright state, and an endless drive mechanism for moving the endless soundproof panel in the longitudinal direction of the soundproof fence. And a support frame having a running function. It is arranged on at least one side around the noise generation location. (4) U-shaped bellows type soundproofing cage in plan view: a soundproofing panel connected in a bellows shape, and a support frame provided with moving wheels provided at the bottom of each panel of the bellows type soundproofing panel; Consists of. It is placed around the noise generating area.

  The invention according to claim 2 of the present invention is characterized in that, in the mobile soundproof fence according to claim 1, at least the inner soundproof panel is configured by attaching a sound insulating sheet to the surface of the sound absorbing material panel. It is a mobile soundproof fence.

  Although various types of sound absorbing material panels can be used, the sound absorbing material panel includes a sound absorbing material panel and a sound insulating sheet. A sound insulation panel made of a sound absorbing material panel and a sound insulation sheet may be arranged inside and outside with the air layer interposed therebetween, or the outside may be a sound insulation sheet alone. This soundproof panel is preferably constituted by, for example, attaching a soft sound insulation sheet to the outer surface of a sound absorbing material panel made of porous foamed polypropylene. Good sound insulation characteristics and sound absorption characteristics can be obtained in a relatively high frequency range, and noise in a relatively high frequency range can be reliably insulated and absorbed.

  The invention according to claim 3 of the present invention is the mobile soundproof fence according to claim 1 or 2, wherein the gap between the lower end of the soundproof panel plate and the ground is formed below the soundproof panel plate. It is a mobile soundproofing jar characterized in that a sound insulation member that can be closed following the above is provided.

  This is a case where a sound insulation member is used for the sound insulation mechanism around the hem of the sound insulation panel. For example, as shown in FIG. 1, a large number of air bags can be accommodated inside the sound insulation sheet hose. The left and right side surfaces of the sound insulation sheet hose are attached to the left and right side surfaces of the lower end portion of the soundproof panel using Velcro (registered trademark) or the like. After the support frame is raised and moved to the next construction site, the support frame is lowered and the sound insulation member is pressed onto the ground to make contact with the ground. Diffraction sound at the lower end of the soundproof panel is reduced, and noise in the low frequency range is reduced. Moreover, the present invention is not limited to this, and an active silencer that reduces the diffracted sound of the soundproofing bowl by emitting a sound having a phase opposite to that of the noise from the sound source speaker can also be used.

  For example, it is applied to a simple and lightweight mobile soundproof fence as shown in FIG. 1, and is a case of a suspension system using a suspension frame. The top surfaces of two soundproof panels arranged at a predetermined interval are connected to each other with a band-shaped upper connecting member, and the two soundproof panels are distributed from the top of the suspension frame to the inner surface and the outer surface of the suspension frame. It arrange | positions and the lower surfaces of two soundproof panels are connected with a band-shaped lower connection material. The two soundproof panels and the suspension frame form a double-structured soundproof panel plate having an air layer between the panels, and a mobile soundproof frame having a double-structured soundproof panel plate can be assembled relatively easily. .

Since the present invention is configured as described above, the following effects can be obtained.
(1) A flexible flat surface using a mobile soundproof panel or a bellows type soundproof panel with a simple frame structure using a soundproof panel and a movable lightweight frame frame to reduce a wide variety of noise associated with construction work and civil engineering work. In the structure of the mobile soundproof frame, the soundproof performance can be efficiently improved with a relatively simple structure by using a soundproof panel plate having a double structure with an air layer in between.
(2) By combining a soundproof panel with a double structure with good sound insulation performance and a sound insulation member that can follow the unevenness of the ground around the hem, it is possible to reliably reduce a wide variety of noises including low frequencies. .
(3) Assemble a soundproof panel with a double-structured soundproof panel relatively easily by suspending and supporting a soundproof panel with a double structure on a support frame using a suspension frame. In addition, it can be installed and removed in a short time by a simple frame structure or planar structure, and can be easily moved and installed as the construction progresses.

  Hereinafter, the present invention will be described based on the illustrated embodiment. This embodiment is an example applied to road demolition work, and is a case where it is applied to a hut-type simple mobile soundproof fence. FIG. 1 is a perspective view and a vertical cross-sectional view showing an example of a shed-type simple mobile soundproof fence of the present invention. 2 to 6 are a perspective view and a vertical cross-sectional view showing the assembly of the mobile soundproof box shown in FIG. 1 in the order of steps.

  The mobile soundproof box of the present invention satisfies the following conditions. (1) The soundproofing device must be easy to move as the dismantling work site is moved. (2) Since the construction range changes depending on the type of work and position, it should be possible to flexibly cope with this change while changing the shape, and ensure a minimum soundproof area. (3) In construction where road construction noise is a problem, assembly and dismantling of construction equipment must be done in a short time, and the installation and removal of soundproofing equipment can be performed quickly and easily. (4) In addition to periodic sounds represented by motors and engines, random noise such as concrete crushing is generated, and low-frequency noise that cannot be handled by passive soundproofing equipment is generated. Can be reduced. (5) As a construction environment, it is necessary to install a soundproofing device on the uneven ground from the start to the end of work, and clearance processing between the ground and the soundproofing device is necessary, and noise from this clearance can be reduced. . (6) To be able to handle outdoor work, it must have a structure that can withstand wind loads and weather resistance against direct sunlight and rain.

  The shed-type simple mobile soundproof fence 1 shown in FIG. 1 is a basic mobile soundproof fence that is applied to construction using a hand breaker, and has a shape surrounding at least three sides of the construction range. The basic structure of the mobile soundproofing fence 1 is composed of a support frame 2 made of a lightweight frame with a caster 2a attached to the lower end, and a soundproof panel 3 provided on the side of the support frame 2. It can be easily moved along with it. In addition, by adding and removing a lightweight frame frame that is a flexible planar structure, it is possible to flexibly respond to the construction range (soundproof range) that changes depending on the work type and position, and to make it the minimum soundproof area Can do. Moreover, since both the support frame 2 and the soundproof panel 3 are lightweight, it can be assembled and disassembled by one worker, and can be easily installed and removed in a short time.

  In the mobile soundproof box 1 having such a configuration, in the present invention, as shown in FIG. 1, two soundproof panels 3, 3 are provided by disposing the soundproof panels 3 in parallel at a predetermined interval. And a soundproof panel plate 5 having a double structure composed of an air layer 4 between the panels, and the soundproof panel plate 5 is used on a side surface outside the support frame 2 as described later. Attach by hanging means or other means. The soundproofing panels 3 and 3 having a double structure sandwiching the air layer 4 can efficiently enhance the sound insulation performance with a relatively simple configuration.

  The sound insulation panel 3 is configured by, for example, a soft sound insulation sheet 3b attached to the outer surface of a sound absorbing material panel 3a made of porous foamed polypropylene, and has good sound insulation characteristics and sound absorption characteristics in a relatively high frequency range. It is possible to reliably insulate and absorb noise in a relatively high frequency range. Moreover, a thing with a weather resistance is used. Such a soundproof panel 3 may be arranged on both the inner side and the outer side (FIGS. 1B and 1C), and the outer soundproof panel 3 may include only the sound insulating sheet 3b (FIG. 1D). ). In addition, if the sound-absorbing material panel 3a is made of a non-crosslinked closed-cell foamed olefin-based hard foam mainly composed of polypropylene in which bubbles are continuously formed in a rugby ball shape, the compressive strength in the thickness direction is increased. A panel having flexibility in the bending direction can be obtained.

  In the case of a suspension method using a suspension frame, as will be described later, the upper surfaces of two soundproof panels 3 and 3 arranged at a predetermined interval are connected with a band-shaped upper connecting member 6. The two soundproof panels 3 and 3 are arranged from above the suspension frame 30 to the inner surface and the outer surface of the suspension frame 30, and the lower surfaces of the two soundproof panels 3 and 3 are connected to each other by a band-shaped lower connecting member 7. To do. The two soundproof panels 3 and 3 and the suspension frame 30 form a double structure soundproof panel plate 5 having an air layer 4 between the panels. However, the soundproof panel plate 5 having a double structure can be formed by a method such as attaching two soundproof panels 3 and 3 via a spacer.

  The upper surface of the support frame 2 is covered with a soundproof panel 3 for the roof to block low-frequency noise that cannot be dealt with by the soundproof panel plate 5 and noise that diffracts the upper end of the soundproof panel plate 5. In addition to such a soundproof panel 3 for a roof, an active muffler (ANB) is installed on the top of the soundproof panel plate 5 and a sound having a phase opposite to that of the noise is emitted from the sound source speaker, thereby diffracting sound of the soundproof panel. Can also be reduced.

  Further, since the soundproof frame 1 is movable, there is a gap between the lower end of the soundproof panel 5 and the ground, and since the ground is uneven due to cutting or the like, the size of the gap changes. With respect to the noise from such a gap, as shown in FIG. 1, the gap between the soundproof panel plate 5 and the uneven ground is closed at the lower part of the soundproof panel plate 5 following the size of the gap. The sound insulation member 8 to be obtained is provided to achieve passive noise reduction. The sound insulation member 8 around the hem can be configured, for example, by accommodating a large number of air bags 10 inside the sound insulation sheet hose 9 along the longitudinal direction of the movable soundproofing cage 1. The left and right side surfaces of the sound insulation sheet hose 9 are attached to the left and right side surfaces of the lower end portion of the soundproof panel plate 5 using Velcro 11 (registered trademark) or the like.

  Inside the lower part of the support frame 2, a traveling mechanism 20 using casters 2 a is provided via a lifting device 21 such as a bolt / nut system, and after the support frame 2 is lifted and moved to the next construction site. Then, the support frame 2 is lowered and the sound insulation member 8 is pressed onto the ground so as to be grounded, and the ground of the ground is followed. The diffracted sound at the lower end of the soundproof panel 5 is reduced, and the noise in the low frequency range is reduced.

  The sound insulating member 8 may be urethane rubber or the like. Also, an active silencer can be installed at the bottom of the soundproof panel 5 to achieve active silence. Also in this case, the diffracted sound at the lower end of the soundproof panel 5 is reduced, and the noise in the low frequency range is reduced.

  As shown in the example of FIG. 2, the support frame 2 is composed of four vertical members 22 and upper and lower cross members 23. In addition, two cross members 23 are respectively arranged on the top and bottom of three of the four surfaces, and the other one surface serves as an entrance / exit for an operator. The traveling mechanisms 20 are attached to the four corners of a square frame composed of the four cross members 23 at the lower part via the lifting devices 21 respectively. The upper parts of the four vertical members 22 protrude by a predetermined length, and a bracket 24 that protrudes horizontally toward the outside is attached to the upper end of the four vertical members 22. A suspension rod 25 that suspends the suspension frame 30 is attached to the tip of the bracket 24. It is attached in the penetrating state.

  As shown in the example of FIG. 3, the suspension frame 30 is composed of four vertical members 31 and three horizontal members 32 arranged on three surfaces excluding the entrance and exit. In other words, a square frame is formed by the two vertical members 31 and the three cross members 32. By inserting and attaching the lower end portion of the suspension rod 25 to the upper part of the four vertical members 31, the suspension frame 30 is suspended and supported outside the three surfaces of the support frame 2 at a predetermined interval.

The mobile soundproofing cage 1 having the above configuration is assembled in the following procedure.
(1) As shown in FIG. 2, the support frame 2 is assembled.
(2) As shown in FIG. 3, the suspension frame 30 is assembled outside the three surfaces excluding the entrance / exit of the support frame 2, and is suspended by the suspension rod 25.
(3) As shown in FIG. 4, a pair of soundproof panels 3 and 3 whose upper parts are connected by the upper connecting member 6 are attached so as to sandwich the hanging frame 30 from above the hanging frame 30, and the inner and outer surfaces of the hanging frame 30 Sort and arrange. The upper connecting member 6 is supported on the upper surface of the cross member 32 above the suspension frame 30, so that the pair of soundproof panels 3 and 3 are suspended and supported with the suspension frame 30 interposed therebetween. By connecting the lower ends of the pair of soundproof panels 3 and 3 with the lower connecting member 7, the soundproof panel plate 5 having a double structure surrounding the three surfaces is assembled. The soundproof panel 3 is divided into a plurality of parts in the longitudinal direction of the ridges, and the vertical joint portions of the divided panels are joined by appropriate means so that no gap is generated.
(4) As shown in FIG. 5, the sound insulation member 8 around the hem is attached to the lower part of the soundproof panel 5 surrounding the three surfaces.
(5) The soundproof panel 3 for roof is installed on the upper surface of the support frame 2, and the end portion is supported by the cross member 23. The movable soundproof frame 1 is completed in which the three sides are surrounded by a double-structured soundproof panel plate 5, the roof is covered with the soundproof panel 3, and the three hems are soundproofed by the sound insulation member 8.

  In addition, although the above demonstrated the case of the small-sized mobile soundproof fence 1 for a hand breaker, it can respond to various construction by enlarging the support frame 2. FIG. Furthermore, the double-structured soundproof panel plate 5 of the present invention can also be used for the following linear or curved movable soundproof fences (not shown).

(1) Bellows-type mobile soundproof fence ... Soundproof panel plate connected in a bellows shape along the longitudinal direction of the soundproof rod, and provided at the bottom of the bellows-shaped soundproof panel plate, and can be expanded and contracted in the longitudinal direction of the soundproof rod A linear mobile soundproof fence composed of a link and a support frame with moving wheels. Installed on either side of the noise location or on one side of the specific building. For example, the soundproofing panels and the support frames at both ends in the longitudinal direction of the soundproofing cage are moved forward by alternately expanding and contracting so as to correspond to the movement of the noise generation location. Further, the soundproof range can be expanded / reduced by expanding / contracting according to the type of the noise generation location.

(2) Accordion-type mobile soundproof fence: A bellows-shaped soundproofing that connects a partial soundproof panel supported by a traveling support frame and a partial soundproof panel arranged at intervals in the longitudinal direction of the soundproof rod. A linear mobile soundproof fence composed of a panel. Installed on either side of the noise location or on one side of the specific building. For example, the soundproofing panels at both ends in the longitudinal direction of the soundproofing cage are moved forward by expanding and contracting to correspond to the movement of the noise generating location. Further, the soundproof range can be expanded / reduced by expanding / contracting according to the type of the noise generation location.

(3) Vertical crawler-type movable soundproof fence: soundproof panel connected endlessly in the state of standing along the longitudinal direction of the soundproof bowl, and endless drive that moves this endless soundproof panel in the longitudinal direction of the soundproof bowl A linear mobile soundproof fence that is provided with a mechanism and a support frame having a running function. Installed on either side of the noise location or on one side of the specific building. For example, if a part of the inner soundproof panel is fixed to the ground and the endless drive mechanism is driven, the outer soundproof panel is extended, and the whole travels forward by the running function and synchronizes with the movement of the noise generation location. Can be moved.

(4) U-shaped movable soundproof fence that surrounds the place where noise is generated in plan view: Provided at the bottom of each panel of the bellows-shaped soundproof panel, and a soundproof panel connected in a bellows shape along the longitudinal direction of the soundproof fence And a curved mobile soundproof frame composed of a traveling support frame that is pivotably coupled to each other in the horizontal direction. It is installed so as to surround three sides around the place where noise is generated. For example, the linear portion on one side of the arc portion is moved forward, and then the linear portion on the opposite side is moved forward, so that the whole is moved forward to correspond to the movement of the noise generation location. The soundproof range can be changed by changing the overall shape.

  In the case of the above-described linear or curved movable soundproof fence, an active silencer may be installed above the double-structured soundproof panel 5. In the lower part, a sound insulation member 8 around the sound insulation skirt or an active silencer is provided.

  In addition, although the example applied to the road dismantling construction was shown above, the present invention is not limited to this, and the present invention can be applied to other places where noise is generated such as construction work and civil engineering work.

It is an example of the simple mobile soundproof fence of the hut type of this invention, (a) is a perspective view, (b), (c), (d) is a vertical sectional view. It is an example of the support frame of the movable soundproofing fence of this invention, (a) is a perspective view, (b) is a vertical sectional view. It is an example of the hanging frame of the mobile soundproof fence of this invention, (a) is a perspective view, (b) is a vertical sectional view. It is an example of the assembly method of the soundproof panel of the movable soundproofing bag of this invention, (a) is a perspective view, (b), (c) is a vertical sectional view. It is a perspective view which shows an example of the sound insulation around the skirt of the mobile soundproof fence of this invention. It is a perspective view which shows an example of the attachment of the roof sound-insulation panel of the mobile soundproof fence of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Mobile soundproof fence 2 ... Support frame 2a ... Caster 3 ... Sound insulation panel 3a ... Sound absorption material panel 3b ... Sound insulation sheet 4 ... Air layer 5 ... Sound insulation panel plate 6 ... Upper connection material 7 ... Lower connection material 8 ... Sound insulation member 9 ... Sound insulation sheet hose 10 ... Air bag 11 ... Magic tape (registered trademark)
DESCRIPTION OF SYMBOLS 20 ... Traveling mechanism 21 ... Elevating mechanism 22 ... Vertical member 23 ... Cross member 24 ... Bracket 25 ... Hanging rod 30 ... Hanging frame 31 ... Vertical member 32 ... Cross member

Claims (3)

In the mobile soundproof fence that is arranged on at least one side around the noise generation location and can change the soundproof range according to the noise generation location moving by the soundproof panel and the movable support frame that supports the soundproof panel, a soundproofing panel and acoustic panel at intervals are supported by the support frame in a state of acoustic panel version was erected in multiple structure composed of an air layer between the acoustic panel and acoustic panel by opposed, travel A square frame-shaped support frame is erected on the mechanism, and a square frame-shaped suspension frame is suspended and supported on the outer surface of the support frame. A mobile soundproofing cage, which is supported and has a pair of soundproofing panels arranged on the inner and outer surfaces of the suspension frame .   2. The mobile soundproof wall according to claim 1, wherein at least the inner soundproof panel is formed by attaching a sound insulating sheet to the surface of the sound absorbing material panel.   The soundproof member according to claim 1 or 2, wherein a sound insulation member capable of closing the gap between the lower end of the soundproof panel plate and the ground following the size of the gap is provided below the soundproof panel plate. A mobile soundproof fence characterized by being provided.

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