JP2005126950A - System for preventing scattering of dust - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for preventing scattering of dust, which enables a worker to perform demolition work in a safe and sanitary environment by preventing the dust etc. from scattering to the surrounding environment. <P>SOLUTION: This system is equipped with: a domy surrounding body 10 wherein a part of a side surface cover 30 is opened, while a building 2 is surrounded by a top surface cover 12, and the side surface cover 30 which integrally continues into the top surface cover 12; heavy equipment 40 for demolition, which performs the demolition work for the building 2, surrounded by the surrounding body 10, through the opening 4; a first chemical-agent injection means 50 which is attached to an arm 46 of the heavy equipment 40 so as to emit a jet of prepared chemical solution in a shape of at least either mist or foam toward a place 3 for the demolition of the building 2; a second chemical-solution injection means 16 which is installed so as to seal the opening 4 with a mist curtain by emitting a jet of prepared chemical solution in a shape of the mist curtain; a chemical-solution supply means 62 for supplying the prepared chemical solution to the means 16 and 50; and a control means for controlling the injection of the prepared chemical solution. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dust scattering prevention system, and in particular, dust and bad odor (hereinafter collectively referred to as dust etc.) generated when dismantling various structures such as a building made of concrete or steel or a wooden house. The present invention relates to a system for preventing scattering in the surrounding environment.

  For various buildings such as a building made of concrete or steel or a wooden house, a demolition work is performed using a hydraulic or mechanical breaker, a cutter, a crusher, a clamp, or the like. When the demolition work is performed by the demolition heavy machine, dust and the like are generated, and thus there is a problem that the surrounding environment of the demolition site is contaminated by scattering of dust and the like.

  In order to reduce contamination in the surrounding environment of the dismantling site, a crushing work machine has been proposed in which an ejection nozzle connected to a water source such as a water pipe is disposed in the vicinity of an arm tip of a heavy machine for dismantling (for example, Patent Document 1). reference.).

JP-A-5-179820

  For example, as shown in FIG. 1, the periphery of the dismantling site 102, that is, the left and right side surfaces and the rear surface are covered with a dustproof cover 130, and then dismantling is performed with a crusher 140. In the crusher 140, a crushing claw 152 or the like is attached to the tip of the arm 146, and an ejection nozzle 116 connected to the water source 160 via a connection pipe 158 is provided behind the crushing claw 152. The ejection of water from the ejection nozzle 116 is performed by a controller 144 provided in the cab 142 of the crusher 140. From the ejection nozzle 116, water is ejected toward a dismantling place where dust or the like is generated, that is, forward, and a curtain of water that wraps around the dismantling place is formed to prevent the generation of dust or the like. .

  However, the method using the water curtain described above has an effect of preventing dust and the like from being scattered only in a very narrow area near the arm 146 of the crusher 140, that is, the front portion of the crusher 140. Despite the dust being scattered in all directions due to the dismantling operation, dust scattering prevention measures are only taken in a limited narrow area of the front part of the crusher 140, and there is no front arm. No dust scattering prevention measures are taken in the area or upper area. Therefore, there is a problem that dust or the like is scattered in the surrounding environment in the front area or the upper area slightly deviated from the vicinity of the arm.

  Therefore, the technical problem to be solved by the present invention is to prevent a dust scattering prevention system that prevents dust and the like from being scattered in the surrounding environment and allows an operator to perform dismantling work in a safe and hygienic environment. Is to provide.

Means and actions / effects for solving the problem

  In order to solve the above technical problem, according to the present invention, the following dust scattering prevention system is provided.

  That is, the dust scattering prevention system according to the present invention surrounds a building with a top cover and a side cover integrally connected to the top cover, and a dome-shaped enclosure in which a part of the side cover is open, Through the opening, a demolition heavy machine for dismantling the building surrounded by the dome-shaped enclosure, and an arm of the demolition heavy machine are attached to the dismantling site of the building. A first chemical injection means for injecting the liquid in any one form; a second chemical injection means installed so as to inject the prepared chemical in a mist curtain shape and seal the opening with the mist curtain; and the respective chemical injection means And a control means for controlling the injection of the prepared chemical solution.

  In the dust scattering prevention system, the tip of the dismantling heavy machine arm that generates dust or the like by the dismantling of the building is covered with a dome-shaped enclosure having an upper surface cover and a side surface cover. For the demolition site of the building, the first chemical solution injection means attached to the arm of the demolition heavy machine is spraying the prepared chemical solution in the form of at least one of fog or foam, so the generation of dust etc. itself Is prevented. And, a part of the side cover of the dome-shaped enclosure is opened so that the arm can move and dismantle, but the opening is sealed with a mist curtain formed by the second chemical injection means. Even if dust or the like is generated, the generated dust or the like is prevented from scattering to the external environment. Therefore, since generation | occurrence | production of dust etc. and scattering of dust etc. to the surrounding environment can be prevented, an operator can perform dismantling work in a safe and hygienic environment.

  The height of the building to be demolished may be high or low. Further, as the dismantling work proceeds, the dismantling place usually varies from a high place to a low place. Therefore, it is preferable that the upper surface cover is changed according to the height of the building dismantling place to reduce the opening so that dust or the like is hardly scattered outside.

  The upper surface cover may be a telescopic support structure supported by a column extending in a vertically stretchable manner, but has a hollow body structure and buoyancy generated by supplying gas into the hollow body The floating structure which floats by is preferable. Since the floating body with the top cover of the dome-shaped enclosure floating in the air is not seen as a building, it is not subject to legal restrictions on the building. Therefore, it becomes easy to install and remove the dome-shaped enclosure.

  As the buoyancy for levitation of the upper surface cover in the air, it is possible to use a light gas such as helium gas, but there are problems that the cost is high and an expensive filling gas needs to be appropriately replenished. Therefore, it is preferable to float the upper surface cover in the air by sending air to the air blowing duct communicating with the upper surface cover by a blower fan.

  A plurality of the air ducts may be arranged and used as a support column that supports the upper surface cover.

  In order to inject the prepared chemical liquid in the form of a fog curtain and seal the opening with the fog curtain using the second chemical liquid injection means, various forms can be used. For example, a configuration may be employed in which a plurality of fog nozzles are arranged opposite to the left and right side edges of the opening, and the chemical mist is ejected from each fog nozzle in a substantially horizontal direction. However, since a large number of fog nozzles are required to arrange the fog nozzles on the left and right, the cost increases. Therefore, it is preferable to provide a plurality of mist nozzles in the lower part on the front side of the upper surface cover to inject the chemical mist downward.

  Alternatively, a plurality of mist nozzles may be provided in the lower part of the upper surface cover, and the mist nozzles that perform the spray operation may change as the position changes in the dismantling location.

  It is preferable that the control means has an operation means for performing an operation related to the chemical solution injection, the operation means is provided in the demolition heavy machine, and the operator of the demolition heavy machine operates the operation means. As a result, the personnel involved in the dismantling work can be reduced.

  A chemical container such as a storage container that stores water and chemical stock solutions separately, and a metering pump that mixes the two to prepare a chemical solution can be installed in the heavy equipment for dismantling, but the installation location is secured in the heavy equipment for dismantling It can be difficult to do. Therefore, it is preferable that the chemical solution supply means is mounted on a storage vehicle provided at a location away from the dismantling heavy machine.

  The chemical liquid supply operation from the chemical liquid supply means to each chemical liquid ejection means can be controlled by wire, but is preferably controlled wirelessly.

  The upper surface cover can be of an overall covering type so as to cover the entire building, or can be of a partially covering type so as to partially cover the building. In the partial covering type, the top cover is configured to cover at least the demolishing location of the building, and the top cover is generally horizontal and vertical so that the top cover continues to cover the demolishing location even if the position of the demolishing location changes. It has moving means for moving in the front-rear direction. Since only a necessary part of the demolished building can be covered with the small size upper surface cover to prevent dust and the like from being scattered, the cost for the upper surface cover can be reduced.

  The moving means has a base to which an upper surface cover is attached and a rail for sliding the base.

  The first chemical liquid ejecting means has a plurality of fog nozzles and foam nozzles, and the fog nozzle and the foam nozzles are arranged so as to face the dismantling place of the building. By constituting in this way, generation of dust etc. can be prevented.

  On the side surface of the first chemical liquid ejecting means, a plurality of mist nozzles for ejecting mist in the outer diameter direction are further arranged. By comprising in this way, the curtain of chemical mist can be formed and scattering of dust etc. can be prevented.

  Preferably, the chemical solution mist curtain can be efficiently formed by rotating the first chemical solution ejecting means about the arm of the dismantling heavy machine and ejecting a small amount of the prepared chemical solution from a small number of mist nozzles. .

  Preferably, the opening is positioned on the front side of the side cover and is positioned at a position corresponding to the demolition location of the building, and the opening is substantially horizontal so that the opening follows the demolition location even if the position of the demolition location changes. Displacement means for lateral displacement is provided.

  According to the above configuration, since the opening of the front cover is displaced according to the position of the dismantling place, prevention of scattering of dust and the like from the opening is extremely effective.

  Below, the dust scattering prevention system 1 which concerns on 1st embodiment of this invention is demonstrated in detail, referring FIGS.

  The dust scattering prevention system 1 schematically shown in FIG. 2 is a hydraulic or mechanical breaker, cutter, crusher, clamp, etc. for various buildings 2 such as a building made of concrete or steel or a wooden house. This is used when the dismantling work is performed using the dismantling heavy machine 40. In the present specification, unless otherwise specified, the side closer to the dismantling heavy machine 40 is the front side, and the side farther from the dismantling heavy machine 40 is the rear side.

  The building 2 to be demolished is entirely covered with a floating dome (dome-shaped enclosure) 10. The floating dome body 10 shown in FIG. 2 is an overall covering type, and mainly includes a floating roof (upper surface cover) 12 and a side dust-proof cover (side surface cover) 30. Note that the overall covering type floating dome body 10 is suitable when the depth of the building 2 is shallow or the height is low.

  The floating roof 12 is a hollow bag-shaped body made of a lightweight material. The floating roof 12 is made of, for example, a glass fiber membrane (commonly called Teflon membrane) coated with a tetrafluoroethylene resin or a special fabric in which a polyester-based high-strength fabric is coated with a vinyl chloride resin and a high gas barrier film or polyethylene film is laminated. It is comprised from gas impermeable sheet | seats and films, such as laminated film. Hollow bag-like floating roof 12 is filled with a light gas such as helium through a vent hole and then closed to make a balloon structure that keeps it airtight, or air is blown into the vent hole as appropriate and inflated. An air dome structure such as a hot air balloon can be used.

  The floating roof 12 shown in FIG. 2 has an air dome structure like a hot air balloon. It is configured to inflate the bag-like floating roof 12 by appropriately supplying air from a plurality of air ducts 22 communicating with the floating roof 12 through a plurality of air holes (not shown) by an electric air blowing motor 24. Has been. The floating roof 12 is supported by a plurality of, for example, six air ducts 22, and the air duct 22 is used as an air column.

  The floating roof 12 is moored to the ground surface by a plurality of support wires 26. Each support wire 26 is wound by an electric wire winding motor 28, thereby lowering the height of the floating roof 12.

  Thus, the height of the floating roof 12 is adjusted by raising the floating roof 12 by the buoyancy of the floating roof 12 itself and lowering the floating roof 12 by winding the support wire 26.

  For example, when the building 2 has a rectangular parallelepiped shape, the floating dome 10 generally has a rectangular parallelepiped shape. Therefore, the side dust cover 30 shown in FIG. 2 is arranged such that there are no gaps on the left side, right side, and rear side, and the front side has a large opening, that is, each side except the front side has no gaps. In the state, the building 2 is surrounded. The expressions front, left side, right side, and rear are not absolute, and the direction facing the demolition heavy machine 40 that performs the demolition work is forward. Moreover, each side dust-proof cover 30 is integrally attached to the lower end part of the floating roof 12, and hangs down by its own weight or weight to at least a height in contact with the ground surface. The shape of the floating dome body 10 is not necessarily similar to the shape of the building 2, and a cylindrical shape, a polygonal prism shape such as a triangular prism, a quadrangular prism, a pentagonal prism, or a hexagonal prism is appropriately selected. The Moreover, the front should just be opened to such an extent that the arm 46 of the demolition heavy machine 40 can enter the inside of the floating dome body 10 and the building 2 can be dismantled. Therefore, the front of the floating dome 10 can be configured to have a large opening over the entire surface as in the present embodiment, or a part of the opening can be opened as described later.

  The side dust-proof cover 30 is made of a glass fiber film (commonly called Teflon film) coated with a tetrafluoroethylene resin, a polyester resin film, a polyimide resin film, a translucent sheet or film such as a vinyl chloride resin or rubber, or It is made of a refractive material such as a resin net or a metal net. The side dust cover 30 may be translucent or non-translucent. In addition, it is suitable to use a material made of a material that is hard to be worn away and is flexible, for example, rubber, for a portion that contacts the ground surface. As described above, the side dust cover 30 hangs down due to its own weight or weight, and its lower end is always in contact with the ground surface. Accordingly, dust or the like is prevented from leaking from the gap between the ground surface and the lower end of each side dust cover 30.

  As described above, before the dismantling operation, the lower end portion of each side dust-proof cover 30 contacts the ground surface, and there is no gap between the ground surface and the lower end portion of each side dust-proof cover 30. ing. When the floating roof 12 is lowered with the progress of the dismantling work, an extra portion in the height direction is formed on each side dust-proof cover 30. However, since each side dustproof cover 30 can be refracted like a fan, no gap is formed between the ground surface and the refracted portion of each side dustproof cover 30. Accordingly, dust or the like is prevented from leaking from the gap between the ground surface and the refracted portion of each side dust cover 30.

  As shown in FIGS. 3 and 4, a plurality of fog pipes 14 are installed on the lower surface of the floating roof 12. The fog pipe 14 is connected to a chemical solution supply device 62 described later. Each mist pipe 14 has a spray nozzle 16 that ejects the mist 7 downward at least on the front side. A fog curtain is formed on the front side of the floating dome 10 by the plurality of spray nozzles 16 provided on the front side, and the front opening 4 is sealed with the fog curtain. Although not shown in FIG. 3, when the spray nozzle 16 is also installed at the middle part and the rear side, and the dismantling place 3 moves to the middle part and the rear part, the spray nozzle 16 close to the dismantling place 3 is located. The mist 7 can be ejected to prevent scattering of dust and the like. Further, the spray nozzle 16 does not always eject the mist 7 but can be controlled to spray when dust or the like is generated by the dismantling operation or at a desired timing.

  Next, as the demolition heavy machine 40, a hydraulic or mechanical breaker, a cutter, a clamp, or the like is used. As an example, the hydraulic crusher 40 will be described.

  The hydraulic crusher 40 includes a main body, a movable part, a cockpit 42, an arm 46, an injection unit 50, a crushing claw 52, a hydraulic cylinder 48, an injection controller 44, a foamer 54, an antenna 56, and a chemical solution pipe 58. Yes. A multi-stage bendable arm 46 extends from the main body toward the building 2 and is driven by a hydraulic cylinder 48. A crushing claw 52 is attached to the tip of the arm 46. The crushing claw 52 as crushing and dismantling means is for crushing the concrete, steel frame and wood of the building 2 and is driven by a hydraulic cylinder 48.

  In the cockpit 42, a part of the control means, operations related to dismantling work such as bending / rotating operation of the arm 46 and gripping operation of the crushing claw 52, start / stop of the preparation liquid injection, injection amount, A control stick or an operation panel (operation means) for performing an operation related to the injection of the prepared chemical liquid such as specifying the injection nozzle is provided. A pilot in the cockpit 42 operates various controls such as a control stick to perform various operations related to dismantling work and liquid medicine injection. Since the operator performs the dismantling operation and the preparation liquid injection, the number of personnel involved in these operations can be reduced.

  The injection unit 50 is attached to the arm 46 on the distal end side of the arm 46 and behind the crushing claw 52. An example of the structure of the injection unit 50 is shown in FIGS. The injection unit 50 includes a pair of substantially “U” -shaped nozzle supports 72, a fog nozzle 76, and a foam nozzle 77. Each nozzle support 72 is fixed to the arm 46 by a support fixing member 78 in a state where the nozzle support 72 is separated to the extent that the hydraulic cylinder 48 can move.

  The nozzle support 72 is provided with a plurality of fog nozzles 76 and foam nozzles 77. A fog pipe 74 and a foam pipe 75 are connected to the fog nozzle 76 and the foam nozzle 77, respectively. The fog pipe 74 is sequentially connected to a chemical liquid pipe (not shown) extending along the arm 46 and a metering pump of the truck 60. The foam pipe 75 is sequentially connected to a chemical liquid pipe 58 extending along the arm 46, a foaming device 54, a chemical liquid pipe 64, and a metering pump of the truck 60.

  The truck 60 as a storage vehicle is provided in a place away from the demolition heavy machine 40. The truck 60 has a chemical solution supply device 62 for supplying an appropriate amount of the prepared chemical solution. The chemical solution supply device 62 includes a stock solution storage container for storing a stock solution of a chemical solution, a water storage tank for diluting the chemical solution stock solution, and a metering pump for mixing the chemical solution stock solution and water to create a prepared medicinal solution. Each storage container can be mounted on a demolition heavy machine if it has a small capacity, but if it has a large capacity, it is mounted on a truck 60. A chemical liquid foaming device 54 for foaming the prepared chemical liquid is mounted on the heavy machine 40 for dismantling. Wireless communication is performed between the antenna 56 of the demolition heavy machine 40 and the antenna 66 of the truck 60, and the liquid medicine is ejected from the metering pumps 16 and 76 from the metering pump, or the liquid medicine is blended from the metering pump to the chemical foaming device 54. The operation of supplying the chemical liquid to create bubbles and then ejecting the bubbles from the bubble nozzle 77 is wirelessly controlled.

  From the mist nozzle 76 and the foam nozzle 77, the mist 8 and the foam 9 are ejected toward the dismantling place 3 of the building 2, respectively. The fog nozzle 76 and the foam nozzle 77 can be arranged on the nozzle support 72 in various patterns. That is, all the nozzles 76 for fog, all the nozzles 77 for foam, half the number of nozzles 76 and the nozzles 77 for foam, or more nozzles 77 for foam than the nozzles 76 for fog. You can do it.

  The injection unit 50 can also take another form as shown in FIGS.

  The injection unit 50 shown in FIGS. 7 to 9 is configured such that a nozzle support 72 having a fog nozzle 76 and a foam nozzle 77 rotates.

  Left and right brackets 82 extending rearward from the rotary support 84 are attached to the arm 46 by bracket fixing members 83. A hydraulic cylinder 48 that drives the crushing claws 52 is inserted between the left and right brackets 82. A bearing 86 is provided between the rotary support 84 and the nozzle support 72, and the nozzle support 72 is configured to rotate about the rotation axis O.

  A plurality of foam nozzles 77 are provided on the front surface of the nozzle support 72 having a generally annular shape. Instead of these foam nozzles 77, a plurality of fog nozzles 76 and foam nozzles 77 can be arranged on the nozzle support 72 in various patterns in the same manner as described above. A plurality of fog nozzles 76 are provided on the outer peripheral surface of the nozzle support 72. The fog nozzle 76 can be arranged so as to be orthogonal to the rotation axis O, or can be arranged at an inclination angle with respect to the rotation axis O. A fog pipe and a foam pipe (not shown) are connected to the fog nozzle 76 and the foam nozzle 77, respectively. In addition, although not shown, it goes without saying that a known liquid-tight structure is provided to prevent the prepared drug solution from leaking out from a pipe connection portion connecting the rotating nozzle support 72 and the pipe.

  The nozzle support 72 is provided with a substantially annular rotary drive 90. Fins 92 are arranged on the inner peripheral surface of the rotary driving body 90 at an inclination angle with respect to the tangential direction of the inner peripheral surface. A rotary drive nozzle 94 is provided on the outer peripheral surface of the arm 46, and pressurized air from the rotary drive nozzle 94 is ejected vigorously toward the fins 92. As a result, the rotation driving body 90 rotates around the rotation axis O, and the nozzle support 72 also rotates in the same manner. That is, the nozzle support 72 is pneumatically driven. By the rotation of the nozzle support 72, the mist 8 ejected in the outer diameter direction from the plurality of fog nozzles 76 provided on the outer peripheral surface of the nozzle support 72 forms a uniform circular mist curtain with no density unevenness. . Similarly, the foam curtain by foam ejection from the plurality of foam nozzles 77 is also uniform with no density unevenness. The nozzle support 72 can be driven to rotate by an electric motor.

  From the above-described spray nozzle 16, mist nozzle 76 and foam nozzle 77, the prepared drug solution is ejected in the form of mist 7, 8 and foam 9, respectively. As the pharmaceutical solution, for example, a chemical solution aqueous solution containing an anionic surfactant is used. As the surfactant, for example, an anionic surfactant such as an anionic alpha olefin sulfonic acid sodium salt, a linear alkylbenzene sulfonic acid sodium salt, a lauryl sulfate sodium salt, an anionic polyoxyethylene alkyl ether is used. .

  By the way, when the building 2 is dismantled, odor gas is often scattered along with dust scattering. Odor gases are broadly classified into alkaline odors such as ammonia and trimethylamine, acidic odors such as hydrogen sulfide and methyl mercaptan, and neutral odors such as aldehyde and methyl sulfide. In most cases, it is a composite odor containing a plurality of acidic odors.

  By spraying a specific chemical deodorant that performs a chemical reaction such as a neutralization reaction, an addition reaction, or a substitution reaction on a specific odor, it can be chemically changed to an odorless substance. A deodorant corresponding to each of a plurality of odors is effective for the composite odor generated from the building 2 to be demolished. In addition, a deodorant that counteracts bad odor by masking with an aromatic substance can be added. In the present specification, a liquid containing the above deodorant alone or a mixed liquid containing the deodorant and the deodorant is called a deodorant liquid.

  As the deodorant, for example, a betaine compound, an amine compound, a nonionic surfactant, a vegetable organic acid, an organic acid salt, a vegetable extract, or a fragrance is used alone or in combination. Is done. A betaine compound is a central compound that chemically reacts with components of complex odors. In one molecule, the molecule has quaternary ammonia as a cation and an acid as an anion, in particular a carboxylic acid anion. A generic term for inner salt.

  Therefore, a deodorant liquid pipe (not shown) connected to the deodorant liquid tank containing the above deodorant liquid is installed adjacent to the chemical liquid pipes 14 and 58, and the deodorant liquid is supplied from the nozzle disposed in the deodorant liquid pipe. It is also possible to provide a deodorant spray structure for spraying.

  As described above, the overall covering type floating dome body 10 is suitable when the depth of the building 2 is shallow or the height is low.

  When the depth of the building 2 is shallow, the dismantling place 3 by the crushing claw 52 moves, for example, from the left end to the right end of the uppermost portion of the building 2, moves directly below the right end to the left end, and further moves directly below the bottom Move from the left edge to the right edge. By repeating such a displacement operation, the dismantling place 3 reaches from the uppermost part of the building 2 to the lowermost part (the ground surface), and the dismantling of the building 2 is completed. At this time, each time the dismantling place 3 moves from the uppermost part of the building 2 to the lowermost part, the floating roof 12 descends by the dismantling height descent.

  Further, when the depth of the building 2 is deep and the height is low, the dismantling place 3 moves, for example, from the left end to the right end of the uppermost part of the building 2, and moves from the right end to the left end of the lower part thereof, and further Move the lower part from the left end to the right end. By repeating such a movement, the dismantling place 3 reaches from the uppermost part of the building 2 to the lowermost part (the ground surface). Next, the demolition place 3 moves to the uppermost part on the rear side from the front side demolition part of the building 2. And the dismantling place 3 moves from the left end to the right end of the uppermost part of the building 2, the lower part thereof moves from the right end to the left end, and further the lower part thereof moves from the left end to the right end, and the dismantling place 3 is at the lowermost part To reach. Thus, the movement from the uppermost part to the lowermost part and the movement from the front side to the rear side are repeated, and the dismantling of the building 2 is completed. Further, when the dismantling place 3 is the front side or the middle part of the building 2, the floating roof 12 is maintained at the uppermost position, but the dismantling place 3 is at the rearmost side of the building 2 and from the uppermost part. When moving to the lowermost part, the floating roof 12 is lowered by the dismantling height descent.

  Next, the dust scattering prevention system 1 according to the second embodiment of the present invention will be described in detail with reference to FIG. In addition, since the fundamental structure regarding the dust scattering prevention system 1 is the same as the thing of 1st embodiment mentioned above, it demonstrates centering on difference.

  The dust scattering prevention system 1 of the first embodiment described above is an overall covering type in which the floating roof 12 covers the building 2 as a whole. On the other hand, the dust scattering prevention system 1 according to the second embodiment is a partial covering type in which the floating roof 12 partially covers the building 2.

  The floating dome 10 of the dust scattering prevention system 1 schematically shown in FIG. 10 includes a left side, a right side, and a rear side dust proof cover 30 covering the building 2, and a floating roof 12 including the building 2. It is comprised so that the upper part may be covered partially and movably. As will be described later, since the floating roof 12 moves from the front to the rear (from left to right in FIG. 10), the rear side dustproof sheet 30 cannot be fixedly provided to the building 2. Therefore, measures are taken to prevent dust and the like from scattering from the gap between the rear side dustproof sheet 30 and the left and right side dustproof sheets 30. For example, the rear side dust-proof sheet 30 is formed into a plurality of vertically long strips so that the rear side dust-proof sheet 30 can fit the contour shape of the building 2 or the rear side dust-proof sheet 30 is used as a building. It can be set as the structure which extends to the rear end of an undisassembled part and covers a building, or the structure which arrange | positioned the several side dust-proof sheet | seat 30 of the back behind several times from the front to back.

  The floating roof 12 partially covers the building 2 to be demolished, that is, the front side of the building 2 in FIG. A plurality of spray nozzles 16 are installed on at least the front side of the lower surface of the floating roof 12. A fog curtain is formed on the front side of the floating dome 10 by the plurality of spray nozzles 16 provided on the front side, and the front opening 4 is sealed with the fog curtain.

  A blower duct 22 that supports the floating roof 12 and blows air into the floating roof 12, a blower motor 24 that blows air to the blower duct 22, and a wire take-up motor 28 that winds the wire 26 that anchors the floating roof 12. Etc. are locked onto the base 32. Wheels 36 are provided on the lower surface of the base 32. A base pulling wire 37 is attached to the rear portion of the base 32, and the base pulling wire 37 is wound by a wire winding motor 38. Accordingly, the base 32 can slide substantially horizontally rearward on the rail 34. Although not shown, by providing a base pulling wire or a wire take-up motor in the front portion of the base 32, the base 32 can be slid on the rail 34 substantially horizontally forward.

  The dismantling place 3 is displaced as the dismantling work of the building 2 proceeds. Normally, the demolition by the demolition heavy machine 40 proceeds from the uppermost part of the building 2 to the lowermost part (the ground surface), so that the floating roof 12 covers only the necessary place of the demolition building 2 and the front opening 4 is minimized. Thus, the floating roof 12 is configured to move downward from above. That is, the support wire 26 connected to the floating roof 12 is wound up by the wire winding motor 28 and the floating roof 12 is pulled down. Furthermore, since the demolition of the building 2 by the demolition heavy machine 40 usually proceeds from the front to the rear, the moored base of the floating roof 12 is covered so that the floating roof 12 covers only the necessary place of the demolition building 2. 32 slides from front to back. Therefore, the floating roof 12 repeats a series of displacement operations of a step moving from above to below, a step rising higher than the building 2, a step proceeding from the front to the rear, and a step moving from the top to the bottom.

  By reducing the size of the floating roof 12 to a size that covers only the necessary place of the demolished building 2, the material cost of the relatively expensive floating roof 12 is reduced, and the number of air ducts 22 and air motors 24 is reduced. There are advantages that the influence of the floating roof 12 on the surrounding environment (for example, radio interference) is reduced. Therefore, compared with the case where the floating roof 12 covers the demolished building 2 as a whole, when the floating roof 12 partially covers the demolished building 2, the cost of the floating roof 12 is reduced. There are advantages.

  Next, the dust scattering prevention system 1 according to the third embodiment of the present invention will be described in detail with reference to FIG. In addition, since the structure regarding the dust scattering prevention system 1 which concerns on 3rd embodiment is the same partial covering type as the thing of 2nd embodiment mentioned above, it demonstrates centering on difference.

  When the opening area of the opening 4 provided in the front is large, it is difficult to make the opening 4 in the front substantially closed by the mist 7 ejected from the spray nozzle 16 installed on the floating roof 12. Therefore, the dust scattering prevention system 1 according to the third embodiment is characterized in that the front opening 4 is a small opening 4 that can be disassembled without any trouble.

  That is, as shown in FIG. 11, for example, when the building 2 has a rectangular parallelepiped shape, the left side, right side, and rear side dust-proof covers 30 have a substantially sealed structure with no gaps, The front dustproof cover 31 located in front has a structure in which a part thereof is opened. Each dust-proof cover 30, 31 is integrally attached to the lower end of the floating roof 12, has at least a length in contact with the ground surface, and hangs down to the ground surface by its own weight or weight.

  The front dust cover 31 includes a left front dust cover 31A, a right front dust cover 31B, and a lower front dust cover 31C. The left front dustproof cover 31A and the lower front dustproof cover 31C, and the right front dustproof cover 31B and the lower front dustproof cover 31C overlap each other so that there is no gap. The left front dustproof cover 31 </ b> A and the right front dustproof cover 31 </ b> B extend from the lower end portion of the floating roof 12 with a length that comes into contact with the ground surface. The left front dust-proof cover 31A and the right front dust-proof cover 31B are separated by a distance corresponding to the opening width of the opening 4, and both are connected by a connecting member (not shown). The upper ends of the left front dustproof cover 31A and the right front dustproof cover 31B are supported by guide rails (not shown), and each side end of the left front dustproof cover 31A and the right front dustproof cover 31B is an electric dustproof cover (not shown). It is connected to a winding motor (displacement means). That is, the left front dust-proof cover 31A and the right front dust-proof cover 31B are configured to slide in a substantially horizontal horizontal direction, that is, in the left-right direction, like an electric curtain. Therefore, the left front dust-proof cover 31A and the right front dust-proof cover 31B cooperate to perform a slide operation in a substantially horizontal horizontal (left-right) direction by remote control.

  The lower front dustproof cover 31 </ b> C extends with a length that abuts on the ground surface from a position where the lower end of the opening 4 is formed when the floating roof 12 is located at the uppermost position. A lower front dustproof cover 31 </ b> C is suspended from the floating roof 12. Accordingly, the lower front dust-proof cover 31C moves up and down following the movement of the floating roof 12 in a substantially vertical (up and down) direction, and a gap is formed between the lower front dust-proof cover 31C and the ground surface. Absent.

  Thus, in the floating dome 10, the portions other than the opening 4 have a substantially sealed structure with no gaps by the dust covers 30 and 31, but the front opening 4 is close to the floating roof 12. That is, it is provided above the front dustproof cover 31. A plurality of spray nozzles 16 are arranged at the front lower end of the floating roof 12, that is, above the opening 4, and the mist 7 is ejected downward. Moreover, it is preferable that at least the front dust-proof cover 31 has translucency so that the inside can be seen during the dismantling operation.

  Similar to the second embodiment, the floating roof 12 is configured to move from above to below as the dismantling of the building 2 proceeds from above to below. When the floating roof 12 moves downward from above, the lower excess portion of the front dustproof cover 31 is folded, and no gap is formed between the lower front dustproof cover 31C and the ground surface. It does not scatter from the gap. At the same time, the position of the opening 4 of the front dustproof cover 31 is automatically adjusted to a height suitable for the dismantling work because it is linked to the movement of the floating roof 12 in the substantially vertical (vertical) direction.

  Similarly to the second embodiment, the dismantling of the building 2 is performed, for example, from the left end to the right end with respect to the uppermost portion of the building 2, and is performed from the right end to the left end with respect to the lower part thereof. It is performed from the left end to the right end with respect to the immediate lower part. The left front dust cover 31A and the right front dust cover 31B slide in a substantially horizontal and horizontal (left and right) direction like an electric curtain in conjunction with the dismantling place 3 being displaced in a substantially horizontal and horizontal (left and right) direction. To do. As a result, the position of the opening 4 of the front dustproof cover 31 is automatically adjusted to a position suitable for the dismantling work in conjunction with the movement of the dismantling place 3 in the substantially horizontal horizontal (left and right) direction. As described above, since the opening 4 having a small opening area exists at a position corresponding to the dismantling place 3, prevention of scattering of dust and the like from the opening 4 is extremely effective.

It is a schematic diagram explaining the dust scattering prevention method which concerns on a prior art. It is a mimetic diagram of a dust scattering prevention system concerning a first embodiment of the present invention. It is the figure which looked at the principal part of the dust scattering prevention system shown in Drawing 2 from the upper part. It is the figure which looked at the principal part of the dust scattering prevention system shown in FIG. 2 from the front. It is the figure which looked at the fixed injection unit attached to the arm of the heavy machine for dismantling from the upper part. It is the figure which looked at the injection unit shown in FIG. 5 from the front. It is the figure which looked at the rotation type injection unit attached to the arm of the heavy machine for dismantling from the upper part. It is the figure which looked at the nozzle support body of the injection unit shown in FIG. 7 from the front. It is the figure which looked at the rotational drive body of the injection unit shown in FIG. 7 from back. It is a schematic diagram of the dust scattering prevention system which concerns on 2nd embodiment of this invention. It is a typical perspective view of the dust scattering prevention system concerning a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust scattering prevention system 2 Building 3 Demolition place 4 Opening 7 Fog 8 Fog 9 Foam 10 Floating dome (dome-shaped enclosure)
12 Floating roof (top cover)
14 Fog piping 16 Spray nozzle (second chemical injection means)
20 Roof support 22 Air duct (post)
24 Blower motor 26 Support wire 28 Wire take-up motor 30 Side dust cover (side cover)
31 Front dust cover (side cover)
31A Left front dustproof cover 31B Right front dustproof cover 31C Lower front dustproof cover 32 Base 34 Rail 36 Wheel 37 Base pulling wire 38 Wire take-up motor 40 Demolition heavy machine 42 Cockpit 44 Injection controller 46 Arm 48 Hydraulic cylinder 50 Injection unit ( First chemical injection means)
52 Crushing claw (attachment)
54 Foaming device 56 Antenna 58 Chemical solution piping 60 Truck (storage vehicle)
62 Chemical solution supply device 64 Chemical solution piping 66 Antenna 72 Nozzle support 74 Fog piping 75 Foam piping 76 Fog nozzle 77 Foam nozzle 78 Support fixing member 82 Bracket 83 Bracket fixing member 84 Rotating support 86 Bearing 90 Rotating drive 92 Fin 94 Rotation drive nozzle O Rotating shaft

Claims (16)

A dome-shaped enclosure that surrounds the building with a top cover and a side cover that is integrally connected to the top cover, wherein a portion of the side cover is open;
A demolition heavy machine that performs the demolition work of the building surrounded by the dome-shaped enclosure through the opening,
A first chemical liquid ejecting means attached to an arm of a demolition heavy machine and injecting the prepared medicinal liquid in the form of at least one of mist and foam toward the demolition place of the building;
A second chemical injection means installed so as to inject the prepared chemical into a fog curtain and seal the opening with the fog curtain;
A chemical supply means for supplying a prepared chemical to each of the chemical injection means;
A control means for controlling the injection of the preparation liquid;
A dust scattering prevention system comprising:   The dust scattering prevention system according to claim 1, wherein the upper surface cover changes according to a height of a dismantling place of the building.   The dust scattering prevention system according to claim 2, wherein the upper surface cover has a hollow body structure and floats by buoyancy generated by supplying gas into the hollow body.   4. The dust scattering prevention system according to claim 3, wherein the buoyancy is obtained by sending air with a blower fan to a blower duct communicating with the upper surface cover.   The dust scattering prevention system according to claim 4, wherein a plurality of the air ducts are arranged and used as a support column that supports the upper surface cover. The second chemical liquid ejecting means has a plurality of fog nozzles,
2. The dust scattering prevention system according to claim 1, wherein the mist nozzle is provided at a lower portion on the front side of the upper surface cover and jets the chemical mist downward. The second chemical liquid ejecting means has a plurality of fog nozzles,
The fog nozzle is provided at the bottom of the top cover;
The dust scattering prevention system according to claim 1, wherein a mist nozzle that performs a spraying operation changes with a change in position at a dismantling place. The control means has an operation means for performing an operation related to chemical liquid injection,
The operating means is provided in a heavy machine for dismantling,
2. The dust scattering prevention system according to claim 1, wherein the operator of the heavy machinery for dismantling operates the operating means.   The dust scattering prevention system according to claim 1, wherein the chemical solution supply means is mounted on a storage vehicle provided at a location distant from the dismantling heavy machine.   2. The dust scattering prevention system according to claim 1, wherein the chemical liquid supply operation from the chemical liquid supply means to each chemical liquid injection means is wirelessly controlled. The top cover is configured to cover at least the building demolition site;
The dust scattering prevention system according to claim 1, further comprising moving means for moving the upper surface cover in a substantially horizontal direction so that the upper surface cover continues to cover the demolition site even if the position of the demolition site changes.   12. The dust scattering prevention system according to claim 11, wherein the moving means has a base with an upper surface cover attached thereto, and a rail for sliding the base. The first chemical liquid ejecting means has a plurality of fog nozzles and foam nozzles,
2. The dust scattering prevention system according to claim 1, wherein the fog nozzle and the foam nozzle are arranged so as to face a dismantling place of a building.   The dust scattering prevention system according to claim 13, wherein a plurality of mist nozzles for spraying mist in an outer diameter direction are further arranged on a side surface of the first chemical liquid ejecting means.   15. The dust scattering prevention system according to claim 14, wherein the first chemical solution jetting means rotates around an arm of a heavy machine for dismantling. The opening is located on the front side of the side cover and positioned at a position corresponding to the dismantling location of the building,
2. The dust scattering prevention system according to claim 1, further comprising a displacement means for displacing the opening in a substantially horizontal lateral direction so that the opening follows the dismantling place even if the position of the dismantling place changes.

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