JP2009235882A - Scaffolding structure and removal method of coating using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To greatly reduce the number of days for constructing a scaffolding installed for the removal work of asbestos or the like, and also to secure the operation of a factory or the like without being influenced by the existence, assembling, dismantlement, transfer or the like of the scaffolding, and furthermore to achieve the efficiency of the local removal of the asbestos or the like in a high place. <P>SOLUTION: When a runway rail 10 and a ceiling crane 11 travelable along the runway rail 10 are installed in a building 1, a scaffolding configuration efficiently locally removes the coating of the asbestos or the like in the building 1 using the ceiling crane 11. Such scaffolding structure has a safety handrail 3 on a work floor 2 installed on the ceiling crane 11 and an isolating curing 5 executed in a place 4 where the asbestos is removed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a scaffold structure for removing work from asbestos and the like of a building in which an overhead crane is installed, and a method for removing asbestos and the like using the same.

Asbestos (asbestos) has been used as a soundproofing material, heat insulating material, and heat insulating material for buildings, etc., although it has been banned from being manufactured as a general rule because of its negative effects on the human body. As a result, asbestos splattering and suctioning during building demolition and the like are now a major social problem.
For this reason, scattering prevention etc. are aimed at by laws, such as the occupational safety and health law, and the detailed scattering prevention technical guideline is announced like the nonpatent literature 1, and the well-known thing is aimed at.

Non-Patent Document 1 discloses a standard for assembling a suspension scaffold and the like regarding the removal work of asbestos constructed at a high place.
However, when asbestos removal target sites are scattered in a large building, it is necessary to repeat assembly, disassembly, and movement of the scaffolds for each removal target site, which increases the cost and construction period of the scaffold assembly. There was a problem.

  Patent Document 1 discloses a method of installing a scaffold stage that makes it possible to remove asbestos in the entire area of the ceiling portion when removing asbestos in the ceiling portion.

However, if the entire area of the ceiling part is wide, it is necessary to make the scaffolding corresponding to this, so the cost and construction days of installing the `` scaffolding stage '' increase, and the presence of the `` scaffolding stage '' The operation will be hindered.
Revised Technology Guidelines for Spraying Asbestos Dust Spattering for Existing Buildings and Explanations 2006 September 15, 2006, 1st edition, 1st edition, issued by Nippon Building Center JP2007-218059

As a pioneer of asbestos removal technology, the applicant has developed various technologies and actively disclosed asbestos removal technology through patent applications and the like.
This time, the present invention will greatly reduce the number of working days for scaffolds installed for the removal of asbestos, etc., and will ensure the operation of factories, etc., regardless of the presence of scaffolds, assembly, dismantling, movement of scaffolds, etc. In order to improve the efficiency of local removal of asbestos, etc. at high altitudes, and to shorten the time required for curing, shorten the scaffold construction days, and shorten the total construction days And

  The present invention is a scaffold structure for removing work from a covering of a building including an overhead crane, and includes a work floor installed on the overhead crane and a safety handrail attached to the work floor. The scaffold structure is characterized in that an isolation curing is performed to seal the location to be removed inside the handrail (invention of claim 1).

  The isolation curing according to the invention is capable of bonding the work sheet corresponding to the place to be removed and the space from the work floor to the ceiling, and the edge of the work sheet between the ceiling roof plate. A tight frame, a support frame for supporting the tight frame, and a support capable of adjusting the height of the support frame are provided (invention of claim 2).

  The isolation sheet according to the present invention is provided with an opening for removing the covering and a glove continuous with the opening (invention of claim 3).

  The removal method for the covering using the scaffold structure of the invention is a removal method for the covering of a building including an overhead crane that can travel along a runway rail, and a work floor is installed on the overhead crane, The work floor can be moved to a place where the covering is to be removed by the overhead crane, and an isolation curing for sealing the place to be removed is provided inside the safety handrail arranged on the work floor for each place to be removed. (Invention of claim 4)

  The isolation curing according to the invention is capable of bonding the work sheet corresponding to the place to be removed and the space from the work floor to the ceiling, and the edge of the work sheet between the ceiling roof plate. A tight frame, a support frame for supporting the tight frame, and a support capable of adjusting the height of the support frame are provided (invention of claim 5).

  The isolation sheet according to the present invention is provided with an opening for removing the covering and a glove continuous with the opening (invention of claim 6).

According to the scaffold structure of the present invention and the method for removing a covering using the same,
(1) Once the scaffold is installed on the ceiling rail, the scaffold can be moved by the overhead crane, so there is no need to dismantle, move and assemble the scaffold, greatly increasing the number of days of scaffold construction for removing asbestos, etc. Can be reduced.
(2) Below the overhead crane, operations of factories and the like can be secured without being affected by the presence of scaffolding, assembly, disassembly, or movement of scaffolds.
(3) There is no need to assemble, disassemble, move, etc. scaffolds for every removal of asbestos, etc. that are locally scattered in the high place of the building, and to improve the efficiency of local removal of asbestos, etc. at high places. be able to.
(4) The time required for scaffolding can be greatly reduced, and by applying isolation curing using a tight frame, support frame, and support, the time required for curing can be shortened, and the number of days for removing asbestos can be reduced overall. Can do.

Hereinafter, the structure of the scaffold according to the present invention and the method for removing the covering using the same will be described with reference to the drawings.
1 is a perspective view of a scaffold structure according to the embodiment, FIG. 2 is a cross-sectional view of a building in which the scaffold structure is arranged, FIG. 3 is a perspective view of a safety handrail of the scaffold structure, and FIG. 4 is an isolation of the scaffold structure. FIG. 5 is a perspective view of a tight frame or the like used for curing, and FIG. 5 is an attachment diagram of an opening and a glove to the isolation sheet of the isolation curing.
In the drawings and the drawings to be described later, the same reference numerals indicate the same configuration, and redundant description is avoided.

As shown in FIGS. 1 and 2, the scaffold structure according to the embodiment includes a runway rail 10 and an overhead crane 11 that can travel along the runway rail 10 in the building 1. This is a configuration for efficiently and locally removing a covering such as asbestos in the building 1 using the overhead crane 11.
The scaffold structure includes a safety handrail 3 on a work floor 2 installed on the overhead crane 11 and an isolation curing 5 applied to a removal target place 4.
In addition, illustration of the suspension apparatus (hoist) normally attached to the said overhead crane 11, wiring with respect to this hoist, etc. is abbreviate | omitted.

The overhead crane 11 illustrated in FIG. 2 is a rail-type overhead crane, but may be a suspended overhead crane that suspends and travels the overhead crane 11 under the runway rail 10.
The shape of the overhead crane 11 may be a box shape in section, a rectangular shape in which vertical beams and horizontal beams are combined, or any other shape that does not hinder the installation of the work floor 2.
Further, when the width of the overhead crane 11 in the short direction is narrow, the work floor 2 may be stretched over the two overhead cranes 11 and 11.

The work floor 2 serves as a base for removal work on a covering such as asbestos, and is constructed by assembling or fixing a plywood to a frame material or the like to form the work surface 20 flat. Etc. are fixed to the overhead crane 11.
In addition, when the handrail etc. are being fixed to the overhead crane 11, the said work floor 2 is provided so that this may be avoided.

  The safety handrail 3 is arranged around the work floor 2 and includes a main column 30 and a support column 31 as shown in FIG. 3, and a base 32 of the main column 30 is fixed to the work floor 2. Inclination to the support column 31 side around 32 is restricted, and folding to the inner side on the opposite side is possible.

As shown in FIG. 2 and the like, the isolation curing 5 is a curing that covers the work floor 2 with the isolation sheet 50, and the isolation sheet (also referred to as a wall surface sheet) around 360 degrees from the work floor 2 to the removal target place 4 (for example, the ceiling). It consists of the curing covered with 51 and the curing of the ceiling.
Curing of the ceiling uses a tight frame 7 that has a foot shape such as a roof plate 6, a frame 8 that supports the tight frame 7, and a support 9 with a mug that adjusts the height of the frame 8. By adhering the end portion of the wall sheet 51 to the roof plate 6 or the like.

As shown in FIG. 4, the tight frame 7 has a facing surface 70 facing the roof plate 6 and the like substantially the same shape as the roof plate 6 and the like, and a contact surface 71 on the support frame 8. Abutted. Moreover, the said opposing surface 70 is provided with the sticking part 72 which provided the cushioning material and / or the adhesive material.
In this embodiment, the opposing surface 70 of the tight frame 7 is formed so as to be footed on the vertically folded folded roof plate, and the longitudinal direction thereof is in the direction of the roof plate 6 as shown in FIGS. It is arranged on the eaves side and the ridge side.
On the other hand, the end of the wall surface sheet 51 in the eaves ridge direction of the roof plate 6 is sealed to the roof plate 6 with an adhesive tape or the like.

When there is no asbestos on the entire roof, in order to remove asbestos efficiently and locally, it is not cured completely, but only on the removal target place 4 where sprayed asbestos exists as shown in FIG. 1 and FIG. Isolation curing 5 is performed.
In this case, as shown in FIG. 5, the wall surface sheet 51 is provided with an opening 52 at a predetermined location where the removal work to the removal target place 4 is easily performed, and the opening 52 is removed from the outside of the wall surface sheet 51. A glove 53 capable of performing work is attached continuously. You may use the isolation sheet | seat with which the glove | globe etc. were previously attached (it is also called the glove back system above).

  As shown in FIG. 6, it is necessary to prevent reduction and scattering of asbestos dust at the removal target place 4 by a negative pressure dust collector 55 in the space 54 where the isolation curing 5 is performed. In this case, in order to prevent the isolation sheets 50 and 51 from deflating inward due to negative pressure, a double-sided tape or the like 56 is interposed between the isolation sheet 51 and the support 9 or between the pipe 90 spanned between the supports 9. Then, the isolation sheet 51 and the support 9 are connected.

In addition, when the removal target place 4 for removing the covering such as asbestos is at a higher position such as a gable roof, a second work floor 2 is installed at the center of the work floor 2. To do.
And the safety handrail 3 is attached to the work floor 2 of the second stage, and the isolation curing 5 is applied to the inside of the safety handrail 3.
In addition, when the shape of the ceiling is, for example, a horizontal roofing board, the opposing surface 70 of the tight frame 7 is formed so as to fit the shape, and the length of the tight frame 7 is arranged in the eaves ridge direction, In addition, two tight frames 7 may be arranged in the direction of the beam.

According to the above-described scaffold structure, as shown in FIG. 7, when there is no asbestos on the entire roof, the work floor 2 is locally subjected to the isolation curing 5, and the outside of the wall surface sheet 51 by the glove back method. The asbestos blown to the purlin etc. using the glove 53 can be efficiently removed.
As shown in FIG. 8, when the isolation curing 5 is applied entirely inside the safety handrail 3, an operator enters the isolation sheets 50 and 51 to perform the removal operation.

The effects of the scaffold structure as described above are as follows.
A. Once the work floor 2 is installed on the ceiling rail 11, the overhead crane 11 can be run to move the scaffold. Therefore, the number of days for asbestos removal work can be significantly reduced. Also, when asbestos is scattered locally at the high place of the building 1, the scaffold is removed for each asbestos removal work. This eliminates the need for dismantling, moving and assembling, and can improve the efficiency of local removal of asbestos and the like at high locations.
B. Below the overhead crane 11, it is not affected by the presence of a scaffold or the assembly, disassembly, movement, etc. of the scaffold, so that the influence on the operation of a factory or the like can be minimized.
C. Regarding the cost of installing a scaffold, etc., the larger the asbestos removal area, the lower the cost.
D. In the case of the glove back method, since the construction range and construction period of asbestos removal work are completed in a short time, the work floor can also be moved in a short period of time, and efficient asbestos removal work can be performed.
E. Since the end of the wall surface sheet 51 is bonded to the tight frame 7 by the tight frame 7, the support frame 8 and the support 9, curing thereof is easy. Therefore, the time for performing the isolation curing can be shortened, and the construction days for removing asbestos can be shortened comprehensively.

Next, a removal method for the covering as a procedure from the installation of the scaffold structure to the movement of the work floor 2 to a new removal target place 4 will be described with reference to FIG.
First, the work floor 2 is installed through preparations such as preparation of necessary equipment and materials (step 1).
Next, the safety handrail 3 is installed and fixed around the work floor 2 (step 2).
Inside the safety handrail 3, the isolation curing 5 is performed, and a negative pressure dust collector is installed (step 3).
Next, asbestos is removed after spraying the dust scattering inhibitor onto the removal target place 4 (step 4).
Next, the removed asbestos is double-packed in a plastic bag and carried out (step 5).
When removing asbestos using a glove or the like from the outside of the isolation curing 5 by the glove back method, the isolation sheet 50 or the like serves as a storage area for the removed asbestos, and the isolation sheet 50 or the like is stored in a plastic bag. It is also possible to carry out heavy packing and carry out (step 6). In this case, step 5 and step 6 are integrated.

Next, the tight frame 7 and the like are unloaded from the work floor 2, the safety handrail 3 is tilted, and the work floor 2 is moved by the overhead crane 11 (step 7).
The range of movement of the work floor 2 is performed such that the removal target place 4 that is a workable range is adjacent as shown in FIG.
Thereafter, the above steps 3 to 7 are repeated until the asbestos removal work for the building is completed.

According to the removal method for the covering as described above, the following effects can be obtained.
In addition to the same effects as the effects A to E above,
F. Since the isolation curing 5 can be performed immediately after the work floor 2 is moved, the construction period required for removing asbestos can also be shortened.

  Regarding the above scaffolding structure and asbestos removal method using this scaffolding, wearing protective clothing, wearing respiratory protective equipment, etc., comply with the above "Technical Guidelines for Preventing Sprayed Asbestos Dust Spattering of Existing Buildings", etc. Done.

The perspective view of the scaffold structure concerning an embodiment, Cross-sectional view of the building with the same scaffold structure, A perspective view of a safety handrail used in the structure, A perspective view of a tight frame used for the structure, Side view of the isolation curing of the same structure, A perspective view of the isolation curing of the same structure, Explanatory drawing of removal work by the structure, Explanatory drawing of removal work by the structure, Flow chart showing the procedure of removal work using the same structure, It is explanatory drawing of step 7 of the removal operation | work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Work floor 20 Work surface 3 Safety handrail 30 Main pillar 31 Support pillar 32 Base 4 Removal target place 5 Isolation curing 50 Isolation sheet 51 Isolation sheet (wall surface sheet) 52 Opening 53 Globe 54 Space 55 Negative pressure dust collector 56 Double-faced tape, etc. 6 Roof plate 7 Tight frame 70 Opposing surface 71 Abutting surface 72 Adhering portion 8 Support frame 9 Support 90 Pipe

10 runway rails 11 overhead cranes

Claims (6)

Scaffolding structure for removing work on the covering of a building equipped with an overhead crane,
A scaffold structure characterized in that a work floor installed on the overhead crane and a safety handrail attached to the work floor are provided, and an isolation curing for sealing a place to be removed is provided inside the safety handrail.   The isolation curing includes a work sheet corresponding to the place to be removed and an isolation sheet capable of sealing a space from the work floor to the ceiling, and a tight frame capable of bonding an end of the isolation sheet between the ceiling roof plate. The scaffold structure according to claim 1, further comprising: a support frame that supports the tight frame; and a support that can adjust a height of the support frame.   The scaffold structure according to claim 2, wherein the isolation sheet is provided with an opening for removing the covering and a glove continuous with the opening. A method for removing a covering of a building having an overhead crane that can travel along a runway rail,
A work floor is installed in the overhead crane, and the work floor can be moved to a place to be covered by the overhead crane.
The removal method with respect to the covering characterized by performing the isolation curing which seals the said removal object place inside the safety handrail arrange | positioned on the said work floor.   The isolation curing includes a work sheet corresponding to a place to be removed and an isolation sheet capable of sealing a space from the work floor to the ceiling, and a tight frame capable of bonding the end of the isolation sheet between the ceiling roof plate. And a support frame for supporting the tight frame and a support capable of adjusting the height of the support frame.   6. The method for removing a covering according to claim 5, wherein the separator sheet is provided with an opening for removing the covering and a glove continuous with the opening.

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