JP3045011B2 - Spray asbestos layer removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing a sprayed asbestos layer applied to a sprayed portion such as a ceiling or a wall of a building.

[0002]

2. Description of the Related Art Conventionally, sprayed asbestos has been widely used as a sound-absorbing / sound-proofing material for buildings or as a material for fire-resistant coating. However, dust from the asbestos may cause lung cancer or mesothelioma. The use of the sprayed asbestos has been clarified, and the use of the sprayed asbestos has been strictly regulated. At present, alternatives such as sprayed rock wool are being used in place of the asbestos.

[0003] Sprayed asbestos constructed before receiving such regulations is degraded and its dust is scattered, which may cause so-called asbestos pollution. As a process to avoid this, `` enclosure process '' to cover the surface of the asbestos layer with a surface material, `` containment process '' to impregnate the asbestos surface or inside with a solidifying material to solidify asbestos, scraper, etc. There is a "removal process" in which asbestos is stripped off by manual work or by jetting compressed air or high-pressure jet water.

[0004] Among these processes, the "removal process" is a process for removing asbestos from a building, and can be said to be a more fundamental solution than other methods. As one of processing apparatuses for the "removal processing", JP-A-1-182
There is one disclosed in Japanese Patent No. 457.

[0005] The processing apparatus 100 described in this publication includes:
A panel 102 is provided below the ceiling 101 on which the asbestos to be removed is installed and forms a working space therein, a nozzle 103 for spraying water inside the panel 102, and a frame surrounding the nozzle 103. A vacuum cover 104 to be sucked, and asbestos separated by the nozzle 103 and dropped into the vacuum cover 104,
A hose 105 connected to the bottom of the vacuum cover 104 to be removed is provided, and a worker enters the working space in the panel 102, where the worker removes the vacuum cover 104 from the surface of the asbestos layer to be removed. At the same time, water is sprayed onto the asbestos layer by the nozzle 103 to separate the asbestos, and the asbestos separated and dropped into the vacuum cover 104 is suctioned and removed by the hose 105.

[0006]

However, since the processing apparatus 100 described in the above-mentioned publication covers the part to be stripped by the vacuum cover 104, the stripping work proceeds from outside the vacuum cover 104. Since the situation cannot be known, the vacuum cover 104 must be periodically removed during the peeling operation to check the progress of the operation. Therefore, when removing the vacuum cover 104, the vacuum cover 10
There is a concern that the dust in the asbestos in 4 may be scattered and the working environment may be deteriorated, and that the work of removing the vacuum cover 104 is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to prevent the asbestos from being scattered when performing asbestos removal work, to prevent the work environment from deteriorating, and to improve the work environment. An object of the present invention is to provide an apparatus for removing a sprayed asbestos layer that can be simplified.

[0008]

In order to achieve the above object, a sprayed asbestos layer removing apparatus according to the present invention removes a sprayed asbestos layer applied to a sprayed portion such as a ceiling or a wall of a building. A box-shaped hood that covers the outside of the area to be intended, a peeling means for peeling asbestos in the hood, and an end opened in the hood to remove the asbestos peeled off from the hood. A spraying asbestos layer removing device provided with a suction means, which is a part of a monitoring device for monitoring a peeling operation in the hood.
A television camera for photographing the peeling operation;
To shoot the vicinity of the tip of the injection nozzle that forms part of
The nozzle is disposed in the vicinity of the injection nozzle, and
It is configured such that it can move inside the hood .

The peeling means includes a device for peeling asbestos by, for example, spraying water or air from a nozzle.

[0010]

According to the sprayed asbestos layer removing apparatus of the present invention, the work of peeling asbestos is performed inside the hood, and the progress of the work can be grasped from the outside of the hood by the monitoring device. This eliminates the need to remove the hood and check the progress of the stripping operation,
In addition, when removing the hood, dust of asbestos does not scatter outside, and the operation of sequentially removing the hood can be omitted, so that the operation can be simplified.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an apparatus for removing a sprayed asbestos layer according to an embodiment of the present invention; FIG. 1 is a perspective view illustrating a removing apparatus 10 according to the embodiment.

The removal device 10 is disposed on a carriage 7 having wheels 71, is moved by the removal device, and is disposed below a ceiling on which sprayed asbestos is installed. A hood 2 for covering the
Peeling means 3 provided in the hood 2 and suction means 4 for sucking the asbestos peeled off and removing it from the hood 2
And a monitoring device 6 for monitoring the asbestos peeling operation. Further, in the present embodiment, the hood 2
A panel 5 for generating an air curtain is provided so as to surround the outer periphery of the vehicle.

The hood 2 is made of a rigid material such as an iron plate and has a box shape having an opening on its upper surface. The hood 2 is supported by a column 7a provided on a carriage 7, and is supported by a column 7a. By adjusting the height position of the hood 2 by expanding and contracting the length, the opening on the upper surface faces the upper ceiling surface.

An injection nozzle 31 and a flexible pipe 31 forming a part of the peeling means 3 are provided inside the hood 2.
a and a television camera 61 that forms part of the monitoring device 6 and captures asbestos peeling work by the injection nozzle 31
And a driving device 9 for moving the injection nozzle 31 vertically and horizontally in the hood 2 together with the television camera 61, and a vacuum hose 41 forming a part of the suction means 4 is connected to the bottom. The mouth 41a is open.

The monitoring device 6 is provided in the hood 2 and is a television camera 61 for photographing the peeling operation by the peeling means 3.
And a monitor 62 for displaying an image transmitted from the television camera 61, and a cable 6 disposed inside and outside the hood 2 for connecting the television camera 61 and the monitor 62.
And 3. The television camera 61 is disposed in the vicinity of the injection nozzle 31 so as to mainly photograph the vicinity of the tip of the injection nozzle 31, and is described later via a rotary drive mechanism (not shown) controlled by remote control. It is attached to the trolley 93 of the driving device 9 to be driven. Then, the television camera 61 uses the trolley 93 to eject the injection nozzle 31.
The TV camera 61 is rotated by controlling the rotation drive mechanism by remote control, and the photographing position is changed. Preferably, the television camera 61 is provided with a transparent cover or the like to cover the television camera 61 to prevent the television camera 61 from being damaged by air jetted from the jet nozzle or peeled asbestos.

On the other hand, the driving device 9 is controlled by a control device 11 installed near the carriage 7.
Two rails 91, 91 disposed in parallel with each other along the longitudinal direction of the hood 2 inside the hood 2;
1 and 91, and a transverse member 92 that moves back and forth along the rails 91 and 91 in the longitudinal direction along the rails 91 and 91 by an electric motor (not shown), and along the transverse member 92 by an electric motor 93a. The trolley 93 is slid in a direction perpendicular to the longitudinal direction and includes the injection nozzle 31 and a trolley 93 to which the television camera 6 is attached.

Further, in the present embodiment, the hood 2
When performing asbestos removal work, as shown in FIG. 2, the edge of the hood 2 is bitten into the asbestos layer 1, and the surrounding asbestos is loosely solidified or injected so as to maintain flexibility. Alternatively, asbestos can be obtained by stabilizing with a boundary material such as a synthetic resin or a synthetic rubber, which has a tackiness enough to prevent the asbestos dust from scattering due to movement, such as a bite of a hood or a hairdressing material when applied. It is fixed to the layer 1 and isolates the inside and outside of the hood 2.

On the other hand, the peeling means 3 includes an injection nozzle 31 disposed in the hood 2 for injecting air upward.
It comprises a flexible hose 31a connected to the lower end of the hood 2 and pierced through the bottom of the hood 2, and a compressor 32 disposed below the hood 2 and on the carriage 7. The injection nozzle 31 is connected to a compressor 32 via a flexible hose 31a,
The asbestos is separated by injecting the air sent from the compressor 32 into the upper asbestos layer 1 while moving vertically and horizontally by the driving device 9.

The suction means 4 is for removing the asbestos peeled off by the peeling means 3 from the inside of the hood 2, and includes a vacuum hose 41 connected to a suction port 41a opened at the bottom of the hood 2, and a vacuum hose 41. A dust collector 42 for removing asbestos from water or air mixed with asbestos sucked through the hose 41;
And a communication pipe 43 communicating with the compressor 32. The dust collector 42 has a built-in vacuum pump, filter, and dust collection tank. Then, it is sucked into the dust collector 42 by a vacuum pump,
The air mixed with asbestos passes through a filter, whereby the asbestos is filtered. The filtered asbestos is collected in a dust collection tank, and the air purified by the filter is sent to the compressor 32 through a communication pipe 43. Can be

The panel 5 is provided with a hood 2 having a hollow double-walled plate member communicating with the hollow inside.
2, and the upper end surface of the panel 5 is disposed at a position lower than the upper end surface of the hood 2 as shown in FIG. That is, a gap is formed between the panel 5 and the lower surface of the asbestos layer 1 when the periphery of the opening of the hood 2 is cut into the asbestos layer 1 of the ceiling.

A large number of blow-out holes 5a are formed in the upper end surface of the panel 5, that is, the periphery of the opening of the box-shaped panel 5, and the compressor is connected to the compressor through a pipe 51 communicating with the hollow. 32. When the compressor 32 is operated in a state where the opening edge of the hood 2 is cut into the asbestos layer 1,
The air sent from the compressor 32 passes through a hollow inside the panel 5 through a pipe 51, and is jetted upward from a number of outlets 5a opened at an upper end surface of the panel 5,
An air curtain can be formed between the upper end surface of the panel 5 and the asbestos layer 1.

In order to remove the asbestos layer 1 installed on the ceiling using the removing device 10 configured as described above,
First, the removal device 10 is installed below the location where the asbestos is to be removed by moving the carriage 7. Next, the hood 2 is raised by extending the column 7a of the bogie 7, and the edge 5a disposed on the periphery of the opening of the hood 2 is cut into the asbestos layer 1. A hood 2 is fixed to the asbestos layer 1 by injecting or applying a boundary stabilizer to the asbestos layer 1 to stabilize the asbestos.

After the fixing of the hood 2 is completed, the compressor 32 and the vacuum pump in the dust collector 42 are operated to peel off the asbestos in the hood 2 and to suck the peeled asbestos. At this time, air is sprayed from the upper end surface of the panel 5 to form an air curtain. At the same time, the driving device 9 moves the injection nozzle 31 while confirming the progress of the asbestos peeling operation through the monitor 62 with the image taken by the television camera 61 disposed in the hood 2.

When the asbestos is removed over the entire area covered by the hood 2, the length of the column 7a of the carriage 7 is reduced to lower the hood 2, and the removing device 10 is moved to the next work position. And the above procedure is sequentially repeated to remove all of the asbestos layer 1 applied to the ceiling.

It is preferable that the asbestos collected in the dust collection tank of the dust collector 42 is kneaded with cement using a mortar mixer, solidified, packed in double vinyl, and discarded.

According to the sprayed asbestos layer removing device 10, the operation of removing asbestos is performed inside the hood 2, and the progress of the operation can be grasped from the outside of the hood by the monitoring device 6. As a result, it is not necessary to remove the hood 2 to check the progress of the peeling operation, so that asbestos dust is not scattered to the outside at the time of the removal, and the operation of sequentially removing the hood can be omitted, thereby simplifying the operation. Can be achieved.

In this embodiment, since the asbestos peeling operation in the hood 2 is automatically performed by remote control using the driving device 9, the operation can be performed safely by a small number of workers.

In this embodiment, since the panel 5 covering the outer periphery of the hood 2 is provided, and the air curtain is formed from the upper end surface of the panel 5, the asbestos can be more reliably prevented from scattering.

Further, with respect to the carriage 7, in this embodiment,
Although the equipment such as the compressor 32 and the dust collector 42 is provided on the cart 7, these equipment can be provided separately from the cart 7. Further, instead of the column 7a, a telescopic arm or a U-shaped link arm, such as an aerial work vehicle, may be used as a supporting means movable not only in height but also in a horizontal direction. Furthermore, such a trolley 7
Without using, the removal device can be supported by hanging bolts from the ceiling or by an operator.

[0030]

Effects of the Invention] According to the apparatus for removing sprayed asbestos layer of the present invention, there is no need to check the progress of peeling operation to remove the hood, asbestos dust in accordance Remove Shino from being scattered to the outside This eliminates the need to sequentially remove the hood. Therefore, it is possible to prevent the asbestos from being scattered when performing the asbestos removal work, to prevent the work environment from deteriorating, and to simplify the work.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a removing device according to an embodiment of a sprayed asbestos layer removing device of the present invention.

FIG. 2 is a schematic sectional view of the removing device shown in FIG.

FIG. 3 is an explanatory view showing a conventional removing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Asbestos layer 2 Food 3 Peeling means 4 Suction means 6 Monitoring device 10 Removal device

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Soji Oyagi 4-640 Shimoseito, Kiyose-shi, Tokyo, Japan Inside the Obayashi Corporation Technical Research Institute (72) Takashi Shiokawa 4-640 Shimoseito, Kiyose-shi, Tokyo, Ltd. Obayashi Corporation Technical Research Institute (56) References JP-A-1-304270 (JP, A) JP-A-57-169111 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04G 23 / 02 E04F 21/00

Claims (1)

(57) [Claims] 1. A box-shaped hood, which covers the outside of an area where a sprayed asbestos layer is to be removed, which is applied to a sprayed portion such as a ceiling or a wall of a building, and a peeling method for peeling asbestos in the hood. A spraying asbestos layer removing device, comprising: a suction means for sucking the asbestos peeled off at one end thereof in the hood and removing the asbestos from the hood. Part of the monitoring device that monitors
No television camera for photographing the peeling operation
In order to take an image near the tip of the injection nozzle that forms part of the step,
Disposed near the injection nozzle, the injection nozzle and
An apparatus for removing a sprayed asbestos layer, wherein both are configured to be movable in the hood .