JP2008308914A - Work unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce facility cost, shorten construction period, and effectively utilize space by restricting working zone and reducing isolated area for reducing the scale of facilities. <P>SOLUTION: This work unit 1 is used for removing the asbestos of the ceiling surface 2a of a building 2 within a predetermined working area. The work unit comprises traveling rails 3, 3 installed in the building 2, a traveling carrier 4 capable of traveling on the traveling rails 3, a work table 5 installed on the traveling carrier 4 and having the working zone R isolated from the periphery by an isolation sheet 54, a security table 6 positioned adjacent to the work table 5, accessible to the working zone R, and having a security zone U for removing the asbestos pieces adhered to persons, and a dust collector 55 for depressurizing the working zone R. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a work unit used for work for handling asbestos provided on a ceiling surface or a wall surface of a large space building in a factory or a warehouse, for example.

  Conventionally, asbestos (asbestos) has been often used for building materials for ceilings and walls because of its high heat insulation and fire resistance effects. However, asbestos has a very fine fiber shape, as is well known, especially when the asbestos is exposed to the indoor space, the asbestos scatters in the air and the human body inhales it. Has a large social impact. Against this background, in recent years, asbestos removal work has been performed on buildings where asbestos is used.

And in the work which handles asbestos, such as an asbestos removal work, for example, when a ceiling surface is used as a work surface, a work platform is provided along the entire ceiling surface, a stage is provided, and the work is performed on the stage. The entire work zone (the whole room) is covered with an isolation sheet to isolate it from the outside, and the work zone is used as a decompression space to prevent the asbestos from scattering. is there.
In addition, the worker wears a dust mask and protective clothes so as not to suck asbestos and works in a state in which it is difficult to move, so that there is a drawback that it is difficult to move and the work efficiency is reduced. On the other hand, in order to improve the working efficiency, an apparatus has been developed in which the removal work and the work of collecting the removed asbestos are mechanized (for example, see Patent Document 1 and Patent Document 2).
Patent Document 1 and Patent Document 2 include a boom-type lifting device that can be expanded and contracted in the vertical direction, and a removal device and a recovery device having a cutting mechanism are attached to the lifting device to cut a ceiling surface or a wall surface automatically or manually. Thus, an apparatus for removing asbestos is disclosed.
JP 2000-79380 A

However, the conventional work for handling asbestos in buildings has the following problems.
In other words, when the building is a large space building such as a factory or warehouse, it is necessary to isolate the entire large space, and it takes time and labor to install the isolation sheet, and the entire large space is reduced to a decompression space. In order to do so, a plurality of ventilation devices such as a dust removal device are installed, and there is a problem that it takes time and costs such as equipment costs, transportation costs, and labor costs for installation.
Furthermore, when installing a work scaffold over the entire ceiling in a large space building, both the height and area of installation will be large, the amount of scaffold material used will be large, the material cost will increase, the assembly of the work scaffold, There was a problem that labor and time required for dismantling and transportation increased. Moreover, since a work scaffold is installed or the entire room is isolated, other work cannot be performed in the room during the period when the asbestos is handled. was there.

The present invention has been made in view of the above-described problems, and by reducing the isolation range by limiting the work zone, the equipment can be reduced in size, thereby reducing the equipment cost and the construction period. The purpose is to provide a working unit capable of
Another object of the present invention is to provide a work unit designed to make effective use of space.

In order to achieve the above object, the work unit according to the present invention is a work unit used in work for handling asbestos of a building, and includes a guide member and a traveling carriage provided so as to be able to travel along the guide member. A work platform having a work zone provided on the traveling carriage and separated from the surroundings by a partition member; and an asbestos piece adhering to a person that is adjacent to the work platform and can enter and exit the work zone. It is characterized by comprising a security frame having a security zone for removing, and a decompression means for decompressing the work zone.
In the present invention, the work zone of the movable work platform is covered with a partition member so as to be sealed, isolated from the surroundings, and the work zone is decompressed so that the asbestos piece generated by the work is moved outward from the work zone. Diffusion can be prevented. And, the entry and exit of people into the work zone will be through the security zone, and asbestos pieces do not diffuse outward from the work zone when entering and leaving, for example, the person who performed work in the work zone in the security zone It is possible to get out of the work unit after removing asbestos adhering to clothes. Further, since the work unit can move the work platform along the guide member, the work unit can be made a limited size, and the work unit becomes a small and simple facility. Therefore, it is possible to reduce the number of installed dust removing devices for reducing the pressure and the equipment scale, and it is possible to reduce the cost for assembling and dismantling work units. In addition, during the work to handle asbestos, it is not necessary to install a work scaffold over the entire ceiling surface to be constructed as in the prior art, so it is possible to reduce the costs of scaffold materials, assembly, dismantling and transportation. At the same time, for example, it is possible to eliminate the trouble of moving equipment such as machines, instruments, and instruments previously installed in the building or covering them with sheets or the like.

In the work unit according to the present invention, the work zone is sized so that a part of the work surface that handles asbestos can be constructed, and the work position of the work surface is changed by moving the work platform. Is preferred.
In the present invention, the entire work area can be constructed while changing the work position on the work surface by sequentially moving the work platform.

In the work unit according to the present invention, it is preferable that an air shower device is provided in the security zone.
In this invention, the asbestos piece adhering to the worker who performed the work which handled asbestos in a work zone can be removed with the air which blows off from an air shower apparatus.

According to the work unit of the present invention, the movable work zone is isolated from the surroundings by the partition member, and the pressure is reduced, and further, people can enter and leave the work zone through the security zone. It is possible to reliably prevent the pieces from diffusing outward from the work zone. Therefore, the isolation range of the work zone can be limited, and the work unit can be easily and downsized. Therefore, there is no need to install an isolation sheet for isolating the entire room (inside the space) as in the past, or to install a large number of dust removal devices to depressurize the entire room, reducing costs and shortening the construction period. Can be achieved. Furthermore, since it is not necessary to install a work scaffold over the entire work area even in a large space building, it is possible to reduce costs and shorten the construction period for assembly and dismantling.
Since the space outside the work unit can be secured and the space can be used effectively, there is an effect that other work such as inspection of machines and equipment can be performed outside the work unit. .

Hereinafter, a working unit according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
1 is a side view showing an overall outline of a work unit according to an embodiment of the present invention, FIG. 2 is a front view of the work unit, FIG. 3 is a plan view of the work unit, and FIG. 4 is a plan view of the work unit shown in FIG. It is a front view of a frame structure.

As shown in FIGS. 1 and 2, the work unit 1 according to the present embodiment removes asbestos provided on a ceiling surface 2a of a building 2 having a large space such as a factory in a predetermined work area. It is for performing.
Here, the building 2 has a rectangular space in plan view as shown in FIG. 3, and the ceiling surface 2a forms a work surface according to the first embodiment.

  As shown in FIGS. 1 to 3, the work unit 1 includes a pair of travel rails 3 and 3 (guide members) installed along the wall surfaces 2 b and 2 b in the longitudinal direction above the building 2 and travels. A traveling carriage 4 provided so as to be able to travel along the rails 3 and 3, a work platform 5 having a work zone R fixed to the traveling carriage 4 and performing asbestos removal work, and adjacent to the lower side of the work platform 5 And a security gantry 6 having a security zone U for removing asbestos pieces adhering to a worker who has worked in the work zone R.

In this embodiment, the traveling rails 3 and 3 are rails for overhead cranes. The traveling rails 3 and 3 are fixed on a rail support frame 2c made of steel or the like fixed to the wall surface 2b at a predetermined height below the ceiling surface 2a.
The traveling carriage 4 includes a wheel 41 that rolls along the traveling rail 3 and an electric motor (not shown) that drives the wheel 41.

  As shown in FIG. 3, the work platform 5 has a substantially square shape in a plan view, and can be moved in the longitudinal direction of the building 2 as the traveling carriage 4 travels as described above. That is, the work platform 5 is fixed to the traveling carriage 4 that is provided on the left and right two so as to straddle the pair of traveling rails 3 and 3. The work zone R in the work platform 5 has a size that allows a part of the work surface (ceiling surface 2a in the present embodiment) to be an asbestos removal surface to be constructed.

  As shown in FIG. 4, the work platform 5 is erected on a work platform 52 that is framed with a steel material or a scaffold, a work floor 52 that is laid on the work platform 51, and a work floor 52. And a separation sheet 54 (partition member) for partitioning the periphery of the work zone R on the work floor 52 and separating the work zone R from the outside. ).

  The gantry 51 is fixed to each traveling carriage 4 and extends in a direction orthogonal to the extending direction of the traveling rails 3 and 3. The frame structure is combined in a truss shape from 51c.

As the work floor 52, a scaffold plate such as a steel plate can be employed. The height dimension from the work floor 52 to the ceiling surface 2a forming the work surface is, for example, about the height of a person who performs work in the work zone R, and is preferably set so as to be easy to work. Is done.
In the work floor 52, an entrance / exit 52a leading to the inside (security zone U) of the security gantry 6 is formed. The doorway 52a is provided with an opening / closing door (not shown), which is opened when entering and exiting the work zone R and basically closed during asbestos removal work.

  As shown in FIGS. 1 and 2, the separation sheet 54 is made of a vinyl sheet or the like, and is fixed with the lower end in close contact with the work floor 52, and the upper end is detachable and in close contact with the ceiling surface 2a. It is fixed with. Thereby, the work zone 5 is in a state where the ceiling surface 2a forming the work surface is opened, and is a space sealed from the surroundings.

  A dust removing device 55 (decompression unit) is installed in the work zone R, and the work zone R is depressurized and maintained at a pressure lower than the atmospheric pressure during the removal operation. The asbestos collected by the dust removing device 55 is collected in a predetermined bag or the like from a pipe (not shown).

As shown in FIG. 4, the security gantry 6 is arranged on the lower side of the work gantry 5 (more precisely, on the lower side of the work floor 52), and is formed by framing like the work gantry 5. . As shown in FIGS. 1 and 2, the security gantry 6 is in a state where the entire circumference is covered with the isolation sheet 61. A part of the security gantry 6 communicates with the entrance / exit 52 a, and the work zone R and the security zone U can be entered and exited by the internal ascending / descending stairs 63. However, an opening / closing door is installed at the boundary as described above.
In the security zone U, air shower devices 62 and 62 are installed, and asbestos pieces adhering to workers coming out of the work zone R can be removed by blowing out air.

  Further, the security mount 6 is provided with an external elevating staircase 64 for entering and exiting the outside. And the external raising / lowering staircase 64 is arrange | positioned so that it can communicate on the channel | path 7 provided in the wall surface 2b of the building 2 (refer FIG. 4).

Next, the effect | action of the work unit 1 comprised in this way and the construction method are demonstrated based on drawing.
As shown in FIGS. 1 to 3, when installing the work unit 1, for example, the parts other than the traveling rails 3 and 3 are assembled on the ground, and the hoisting machine and pulley are appropriately installed and assembled. The working unit 1 is lifted by using a wire rope or the like, and the traveling carriage 4 is placed on the traveling rail 3 for assembly.

  When the asbestos removal work is performed, the work platform 5 is moved together with the security platform 6 to a predetermined ceiling surface 2a, and the work zone R of the work platform 5 is covered with the isolation sheet 54 at that position to be sealed. The zone R is separated from the surroundings. Thereby, the asbestos removal work can be performed in the work zone R. Then, by moving the work platform 5 sequentially, the removal work of the entire removal range of the ceiling surface 2a is performed while changing the work position on the ceiling surface 2a.

  When moving the work platform 5, the upper end of the isolation sheet 54 is removed from the ceiling surface 2a, and after moving to the next work location, the upper end of the isolation sheet 54 is again in close contact with the ceiling surface 2a. To fix with. Needless to say, the work zone R is opened after the asbestos piece in the work zone R is absent. Further, the separation sheet 54 may be replaced every time the work platform 5 is moved.

  Here, when an operator who has been in the work zone R for asbestos removal work or the like goes out of the work zone R, the worker enters the security zone U from the entrance 52a leading to the security zone U using the internal ascending / descending stairs 63. The asbestos piece adhering to the person is removed by the air shower by the air shower device 62.

Thus, in this work unit 1, the work zone R is made a space isolated from the surroundings by the isolation sheet 54, and the work zone R is reliably reduced from the outside by depressurizing the work zone R with the dust removing device 55. Therefore, asbestos fragments generated in the work zone R can be prevented from diffusing outside the work zone R.
Since the work unit 1 can move the work platform 5 along the traveling rails 3 and 3, the work unit R can be made a limited size. That is, since the work unit 1 becomes a simple facility, the cost for assembly, disassembly, and transportation of these facilities can be reduced.

Moreover, in this Embodiment, since the traveling rails 3 and 3 for overhead cranes previously installed in the building 2 can be used, it becomes unnecessary to newly install a rail and the assembly of the work unit 1 is carried out. Can be shortened.
Furthermore, during the asbestos removal work, there is no need to install a work scaffold over the entire ceiling surface 2a to be constructed as in the prior art, so the cost of the scaffolding material, assembly, disassembly, and transportation can be reduced. At the same time, for example, it is possible to eliminate the trouble of moving equipment such as machines, instruments, and instruments previously installed in the building or covering them with sheets or the like.

As described above, in the work unit according to the present embodiment, the movable work zone R is isolated from the surroundings by the separation sheet 54 and depressurized by the dust removing device 55, and further, the security zone U Asbestos pieces generated by the work can be reliably prevented from diffusing outward from the work zone R. Therefore, the isolation range of the work zone R can be limited, and the work unit 1 can be easily and downsized. Therefore, there is no need to install an isolation sheet for isolating the entire room (inside the space) as in the past, or to install a large number of dust removal devices to depressurize the entire room, reducing costs and shortening the construction period. Can be achieved.
Furthermore, since it is not necessary to install a work scaffold over the entire work area even in a large space building, it is possible to reduce costs and shorten the construction period for assembly and dismantling.
And since the space outside the work unit 1 can be secured and the space can be used effectively, the outside of the work unit 1 can perform other work such as inspection of machines and equipment, for example. Play.

As mentioned above, although embodiment of the work unit by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning.
For example, in the present embodiment, the asbestos removal work is the work target in the work unit 1, but the present invention is not limited to this. For example, the work unit 1 is also used when performing a restoration work after asbestos removal or the like. be able to.
Moreover, although the work surface by the work unit 1 is the ceiling surface 2 a, the target of the asbestos removal work may be the wall surface 2 b of the building 2. In this case, the isolation sheet 54 is installed so as to isolate the work zone R with the wall surface 2b side opened. At that time, the isolation sheet 54 is fixed in close contact with the work surface (wall surface 2 b) so that the asbestos pieces are not scattered outside the work zone R.

And in this Embodiment, although it is set as the structure using the traveling rails 3 and 3 for overhead cranes previously installed in the building 2, it is not limited to this, For example, the wall surface of the building 2 A guide member made of H-shaped steel or the like is extended on the work scaffold raised from the floor of the building 2 along the passage 7 provided on the wall 2b or the wall surface 2b. A traveling carriage having wheels and guide rollers may be moved. Further, the guide member may be fixed to or suspended from the ceiling, and the work platform 5 (including the security platform 6) may be suspended from the guide member.
Further, the size, height, entrance / exit 52a, traveling carriage 4, dust removal device 55, air shower device 62, internal and external elevating stairs 63, 64, etc. of the work platform 5 and security platform 6 are specified in detail. What is necessary is just to design optimal considering the construction conditions, such as the shape of the building 2 which should be implemented, the magnitude | size of internal space, the height of a ceiling, and the position of a traveling rail.

It is a side view which shows the whole work unit outline | summary by embodiment of this invention. It is a front view of a work unit. It is a top view of a work unit. It is a front view of the framework structure of the work unit shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work unit 2 Building 2a Ceiling surface 2b Wall surface 3 Traveling rail (guide member)
4 Traveling cart 5 Working platform 54 Separation sheet (partition member)
55 Dust removal device (pressure reduction means)
6 Security stand 61 Separation sheet 62 Air shower device R Work zone U Security zone

Claims (3)

A work unit used to handle building asbestos,
A guide member;
A traveling carriage provided so as to be able to travel along the guide member;
A work platform having a work zone provided on the traveling carriage and separated from the surroundings by a partition member;
A security cradle that is adjacent to the work cradle, has a security zone that allows access to the work zone and removes asbestos pieces adhering to a person;
Decompression means for decompressing the working zone;
A working unit comprising: The work zone has a size that enables construction of a part of a work surface that handles asbestos,
The work unit according to claim 1, wherein the work position of the work surface is changed by moving the work base.   The work unit according to claim 1, wherein an air shower device is provided in the security zone.

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