JP2008013959A - Ceiling working device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling working device capable of having a concrete slab inside a ceiling worked while removing a sprayed material containing harmful substances such as asbestos without dispersing. <P>SOLUTION: In this ceiling working device 1, a dividing member 12 dividing the inside of a ceiling into a working space and a non-working space by surrounding an area where a working is performed for the concrete slab 22 is installed in a device body 11. A working means 16 for the concrete slab 22 is inserted into the dividing member 12. A dust collecting means 15 capable of sucking dust and dirt containing asbestos is connected to the dividing member. The dividing member 12 is inserted to the inside 21 of the ceiling through a working hole 24 formed in a ceiling finish board 23. The distal end of the dividing member 12 is brought into contact with the lower surface of the concrete slab 22, and the proximal end is connected to the working hole 24 formed in the ceiling finish board 23 so that the working for the concrete slab 22 can be performed through the dividing member 12 from the outside of the inside 21 of the ceiling. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a ceiling work device used for performing work such as anchor pin placement on a concrete wall slab covered with a spray material.

  Conventionally, anchor pins for attaching interior materials and lighting fixtures are often driven into concrete slabs and ceiling surfaces in buildings and the like. A commonly used anchor pin has a metal cylinder provided with a plurality of slits in the axial direction from the peripheral wall tip, and a tapered wedge body that protrudes and attaches to the tip of the cylinder. . In order to drive such an anchor pin into a concrete slab or the like, a drilling hole with a drill attached to the tip is drilled in advance, and then a cylindrical body is inserted into the casting hole with the wedge body first. After that, the bottom of the cylindrical body is vibrated and hit with an anchor driving device having a driving shaft for transmitting the vibration hitting the tip. Thus, the wedge body is pushed into the cylinder body by the pressing force from the bottom surface of the placement hole, the peripheral wall of the cylinder body is expanded, and the anchor pin is fixed in the placement hole.

  As described above, for example, an anchor driving device described in Patent Document 1 is an example of a device that punches a hole into a concrete slab or the like and drives an anchor pin therethrough. In this type of device, there is a device in which a drill device and an anchor driving device are slidably mounted in an axial direction on a frame that is lifted and lowered by a lifting device.

  Also, recently, the harmfulness of sprayed asbestos, etc. that has been used as fireproof coatings, sound absorption, soundproofing materials, etc., has become a problem recently. Spray material is to be constructed. However, sprayed asbestos constructed before receiving such regulations is scattered over time due to aging, and it is required to take sufficient measures when performing various operations such as removal of asbestos. The same applies to concrete slabs and pipes for ceiling pockets where anchor pins are placed as described above, and when spraying materials containing asbestos are used, countermeasures are required. .

In such a case, after separating the work place and preventing scattering, and taking appropriate exposure prevention measures using appropriate dust masks and protective clothing according to the amount of high-concentration dust, apply to the concrete slab. Must be done. This is stipulated as a measure to prevent asbestos exposure in the “Asbestos Disorder Prevention Regulations” established as an increase in work such as demolition of buildings using asbestos-containing building materials is expected in the future. Another work level classification corresponds to level 1.
Japanese Patent Laid-Open No. 8-1653

  As described above, in order to perform the work corresponding to level 1 on the concrete slab on which asbestos has been constructed, the entire living room where the ceiling work is performed and the surrounding area are covered with a vinyl sheet and cured and sealed. It is necessary to perform sufficient separation. For this reason, the period required for the work is prolonged, and there is a concern about the influence on the worker. In addition, during such ceiling work, there may be a disadvantage that the building in which the work is being performed cannot be used.

  The present invention has been made in view of the above circumstances, and it is possible to work on a concrete slab in a ceiling pocket while removing spraying materials containing harmful substances such as asbestos without scattering. A ceiling work device is provided.

  In order to achieve the above-described object, the present invention provides a ceiling work device for performing work from the outside of a ceiling pocket on a concrete slab in a ceiling pocket above the ceiling finishing plate and covered with a spraying material. The apparatus main body includes a partition member that surrounds an area to be worked on the concrete slab and can partition the ceiling pocket into a work space and a non-work space, and the partition member includes a concrete slab. The work means for performing the work is inserted, and the dust collecting means capable of sucking the spray material is connected, and the partition member is inserted into the ceiling pocket through the work hole opened in the ceiling finishing plate. The front end is brought into contact with the lower surface of the concrete slab, and the base end is connected to a work hole formed in the ceiling finishing plate, and the concrete slab is applied to the concrete slab from the outside of the ceiling pocket through this partition member. Thereby enabling work, it is characterized by preventing the scattering of spraying material to the blast material suction to the apparatus body out of the working space by the partition member.

  According to this configuration, it is possible to work on the concrete slab while sucking the dust containing the spray material such as asbestos generated by the ceiling work through the partition member and the dust collecting means. It is possible to eliminate the need for large-scale curing equipment and the like by limiting the range of influence of the work locally. Therefore, the work cost can be reduced and the work period can be shortened.

  In the present invention, the working means is a concrete drill for drilling a hole for anchor pin in a concrete slab. Further, this working means may be an anchor driving rod for driving the anchor pin into the anchor pin driving hole formed in the concrete slab.

  Thereby, it is possible to pierce the anchor pin driving hole or to anchor the anchor pin using one device.

  In the present invention, the partition member is formed in a cylindrical shape, covers the periphery of the working means in the working direction, and is freely stretchable between the concrete slab and the ceiling finishing board.

  Thus, the ceiling work can be performed only in the section of the minimum range, and the partition member can be arranged regardless of the height of the ceiling pocket to partition the work space and the non-work space.

  Here, the partition member includes an outer cylinder and an inner cylinder installed inside the outer cylinder, and the outer cylinder and the inner cylinder can be expanded and contracted by sliding in the working direction of the working means. It is preferable that

  More specifically, the outer cylinder of the partition member includes a first outer cylinder having a small diameter, in which a base end portion of the inner cylinder is installed and connected to a work hole of the ceiling finishing plate, and at least the inner cylinder and the first outer cylinder. It is preferable that the second outer cylinder is disposed so as to cover the overlapping portion, and the inner cylinder and the first outer cylinder are slidable in the working direction.

  In the present invention, it is preferable that the base end portion of the partition member is provided with a hook-shaped fixing plate that is attached around the work hole on the lower surface side of the ceiling finishing plate and fixes the partition member.

  As a result, it is possible to install the device main body with the fixing plate fixed to the ceiling finishing plate and the partition member inserted into the ceiling pocket, and it is not necessary for the operator to support the device main body by hand, and the work is reduced. Can work efficiently.

  In the present invention, the dust collecting means includes a dust collection cover that is connected to the partition member and receives the dust collected through the partition member, and a dust collector with a high-performance filter connected to the dust collection cover. It is preferable to provide.

  As a result, it is possible to reliably collect and filter the dust containing the spray material, purify it with a high performance filter, and continuously collect it without leaking to the outside.

  According to the ceiling work device of the present invention configured as described above, work is performed on the ceiling slab concrete slab while appropriately removing the spray material containing harmful substances such as asbestos without scattering to the outside. Can be applied. This also makes it easy to separate the room from other rooms, and there is no inconvenience of closing the room or the entire building. Is also possible.

  Hereinafter, the best mode for carrying out a ceiling work apparatus according to the present invention will be described with reference to the drawings.

  1 to 3 show an example of a ceiling work apparatus according to the present invention, FIGS. 1 and 2 are schematic sectional views showing the structure of the ceiling work apparatus, and FIG. 3 is a perspective view showing a partition member in the ceiling work apparatus.

  In FIGS. 1 and 2, in order to make the drawings easy to see, the cross-sectional hatching is omitted in the constituent members such as the concrete drill 161 and the housing 17.

  In the illustrated embodiment, a ceiling finishing plate 23 is disposed in the upper portion of the living room 2 to form a ceiling surface, and a concrete slab 22 serving as a floor plate on the upper floor is disposed in the upper ceiling pocket 21. This concrete slab 22 is covered with sprayed asbestos constructed before regulation. In the ceiling work device 1 according to the present invention, dust containing asbestos is applied to the concrete slab 22 when the anchor pin is drilled in the concrete slab 22 or when the anchor pin is driven into the cast hole. It is used when performing various kinds of work that can be scattered, and allows a predetermined measure corresponding to work level 1 to be taken.

  The apparatus main body 11 of the ceiling work device 1 surrounds an area to be worked on the concrete slab 22 and partitions the ceiling pocket 21 into a work space and a non-work space using the ceiling finishing plate 23 as an isolation boundary surface. A partition member 12 that can be used is provided.

  In the illustrated embodiment, the partition member 12 is formed in a cylindrical shape, and includes an outer cylinder 123 and an inner cylinder 121 that is installed inside the outer cylinder 123. Furthermore, as illustrated, the outer cylinder 123 of the partition member 12 includes at least an inner diameter of the first outer cylinder 123 having a small diameter, in which the base end portion of the inner cylinder 121 is internally connected to the work hole 24 of the ceiling finishing plate 23. And a second outer cylinder 124 disposed so as to cover an overlapping portion of the cylinder 121 and the first outer cylinder 123. That is, in the illustrated embodiment, the partition member 12 has a triple structure of the inner cylinder 121, the first outer cylinder 123, and the second outer cylinder 124 in order from the inside.

  Among these, the first outer cylinder 123 and the inner cylinder 121 are slidable in the axial direction of the cylinder. On the outer peripheral surface of the inner cylinder 121, an elastic spring 13 that is locked and stretched between the distal end portion of the first outer cylinder 123 and the distal end portion of the second outer cylinder 124 is inserted. In addition, a locking piece 121 a that protrudes from the first outer cylinder 123 protrudes from the base end portion of the inner cylinder 121.

  As a result, when the inner cylinder 121 slides while being pressed downward in the axial direction by an external force, and the base end portion is housed inside the first outer cylinder 123, the second outer cylinder 124 slides downward accordingly. The elastic spring 13 contracts as it moves. When the external force is released, the inner cylinder 121 is expanded by the repulsion of the elastic spring 13 and the length of the partition member 12 is restored.

  Further, the inner cylinder 121 may be formed with a minimum inner diameter necessary for the work by defining a range in which the work can be performed on the concrete slab 22. The first and second outer cylinders 123 and 124 are formed to be slidable with respect to the outer diameter of the inner cylinder 121.

  In the illustrated embodiment, a buffer material 125 is attached to the base end portion of the second outer cylinder 124. Since the second outer cylinder 124 slides between the concrete slab 22 and the ceiling finishing board 23 in the axial direction of the cylinder, the second outer cylinder 124 protects the ceiling finishing board 23 when contacting the upper surface of the ceiling finishing board 23. In order to do so, a buffer material 125 is provided. The buffer material 125 is preferably a rubber material having elasticity, a porous sponge, or the like.

  The partition member 12 is provided with a hook-shaped fixing plate 14 at the base end portion of the first outer cylinder 123. The illustrated fixing plate 14 is formed in a rectangular flat plate shape, and a plurality of fastening holes 141 are provided diagonally about the outer cylinder 123. With the fixing plate 14, when the apparatus main body 11 is disposed on the ceiling finishing plate 23, the partition member 12 can be fixed by being attached around the work hole 24 on the lower surface side of the ceiling finishing plate 23. Yes.

  Dust collecting means 15 for removing dust containing asbestos generated by the ceiling work from the ceiling pocket 21 is connected to the lower part of the partition member 12 and the fixing plate 14. The dust collecting means 15 includes a dust collecting cover 151 that communicates with the partition member 12 and receives dust collected through the partition member 12. The dust collection cover 151 is formed in a box shape and is disposed so as to cover the lower region of the partition member 12. The dust collecting cover 151 is provided with a connection port 151a on a side portion so that the collected dust can be discharged.

  Further, a dust collector 153 with a high performance filter is connected to the dust collecting cover 151 as the dust collecting means 15. The dust collector 153 collects dust collected in the dust collection cover 151 from the connection port 151a through the flexible hose 152 for sucking dust. The dust collector 153 is preferably a cleaner incorporating a vacuum pump, a high-performance (HEPA) filter for air filtration, a cyclone, a recovery tank, and the like. The dust collecting means 15 makes it possible to prevent the dust containing the spray material of the concrete slab 22 from being sucked and scattered outside during the ceiling work through the partition member 12.

  Further, a working means 16 for performing a ceiling work on the concrete slab 22 is provided below the dust collecting cover 151. As the working means 16, first, a concrete drill 161 that drills a hole for placing an anchor pin in the concrete slab 22 is cited.

  The concrete drill 161 has a tip having a tip diameter of 9 mm to 12 mm, and the tip is inserted into the dust collecting cover 151 and the partition member 12. The base end of the concrete drill 161 is provided with appropriate driving means. For example, a suitable motor or the like is preferable as the driving means, and the drill of the electric drill may be replaced with the concrete drill 161 and used. Note that the drill tip diameter of the concrete drill 161 is appropriately selected depending on the device to which the anchor pin is driven and suspended, and is not limited to 9 mm to 12 mm, and the concrete drill has any size of tip. 161 may be used.

  In addition, a housing 17 is provided at a lower portion of the dust collection cover 151 through which the concrete drill 161 is inserted to prevent shaft runout caused by driving of the drill, and an O-ring 171 and a bearing 172 are provided around the axis of the concrete drill 161. It is incorporated at two locations in the axial direction. As a result, the concrete drill 161 can be gripped and driven smoothly.

  As described above, the ceiling work device 1 includes the concrete drill 161 as the working means 16 so as to pierce the concrete slab 22 of the ceiling pocket 21 and collect the dust containing asbestos generated at the time of piercing without scattering. Is possible.

  Further, the working means 16 may be an anchor driving rod for driving the anchor pin into the anchor pin driving hole formed in the concrete slab 22 instead of the concrete drill 161. In this case as well, as in the case where the concrete drill 161 is provided, the tip of the anchor driving rod is inserted into the dust collecting cover 151 and the partition member 12, and the anchor pin is driven inside the partition member 12. Configured to be Thereby, even when the anchor pin is driven, the work can be performed while collecting dust containing asbestos without being scattered.

  Next, the construction method of the ceiling work performed by the ceiling work apparatus 1 configured as described above will be described. FIG. 4 is a flowchart showing a work procedure for placing anchor pins on the concrete slab 22 using the ceiling work device 1.

  First, when starting work, the worker appropriately wears a dust mask, protective clothing, and the like. In addition, sealing work around equipment such as peripheral lighting fixtures, air-conditioning outlets, and suction openings is performed to prepare the ceiling pocket 21 to be completely separated from the interior of the living room 2.

  Next, after confirming the placement position of the anchor pin on the ceiling finishing board 23 based on the survey before construction, etc., marking the bottom surface of the ceiling finishing board 23, the position is directly below the placement position. Then, the work hole 24 is opened (S1). For the opening of the working hole 24, it is preferable to use a non-vibrating cutter or the like having a small influence on the periphery. The work hole 24 may be provided as long as the partition member 12 of the apparatus main body 11 can be inserted.

  Next, the partition member 12 is inserted into the work hole 24 opened in the ceiling finishing plate 23, and the inner cylinder 121 of the partition member 12 is brought into contact with the lower surface of the concrete slab 22 (S2). The first outer cylinder 123 is connected to the work hole 24. Thereby, the inner cylinder 121 and the outer cylinder 123 of the partition member 12 slide with each other, and expand and contract in the axial direction of the cylinder, which is the working direction of the concrete drill 161, between the concrete slab 22 and the ceiling finishing plate 23. Then, a sealed work space having a length corresponding to the height of the ceiling pocket 21 is formed.

  That is, when the height T of the ceiling pocket 21 is high, as shown in FIG. 1, the partition member 12 is disposed in a state where the elastic spring 13 built in the partition member 12 is extended. When the height T of the ceiling pocket 21 is low, as shown in FIG. 2, the partition member 12 is disposed with the elastic spring 13 contracted, and the space between the concrete slab 22 and the ceiling finishing plate 23 is The ceiling pocket 21 is partitioned into a working space and a non-working space.

  Further, since the fixing plate 14 abuts on the lower surface of the ceiling finishing plate 23, an appropriate hole of the plurality of fixing holes 141 is selected, and fixing devices 142 such as screws are uniformly attached, and the fixing plate 14 is attached to the ceiling. Fix to the finishing plate 23. In addition to the fixing work, the dust collector 153 is driven from the opening work of the work hole 24, and the inside of the partition member 12 and the dust collecting cover 151 is continuously sucked to maintain the negative pressure state.

  Next, the concrete slab 22 is drilled by the concrete drill 161 as the working means 16 (S3). The concrete drill 161 is driven to form a placement hole having a size and a length corresponding to the size of the anchor pin.

  Subsequently, the concrete drill 161 held by the housing 17 is replaced with a driving rod (not shown) (S4). Then, with this driving rod, an anchor pin is driven into a driving hole drilled in the concrete slab 22 (S5).

  When these anchor pin placement holes are drilled and when the anchor pins are driven, the spray material in the work space by the partition member 12 can be continuously sucked, and the spray material is supplied to the outside of the apparatus main body 11. Can be prevented from scattering (S10, S11).

  Even after the anchor pin placement is completed, the dust collection is continued for several minutes, and then the partition member 12 and the dust collection cover 151 are removed, and the inside thereof is cleaned (S6). The cleaning operation is preferably performed by supplying water to the partition member 12 and the dust collecting cover 151 to wash away. Then, as a precaution, asbestos scattering prevention is performed around the periphery, and the apparatus main body 11 may be removed from the ceiling finishing plate 23.

  As described above, the ceiling work device 1 has an anchor pin placement hole from the outside of the ceiling pocket 21 with respect to the concrete slab 22 in the ceiling pocket above the ceiling finishing plate 23 and covered with the spray material. Can be suitably used for punching a hole or driving an anchor pin.

  The anchor pin to be driven is, for example, a type in which the extension part at the end is pushed and expanded by driving a core rod, or a movable sleeve is set on a tapered bolt, and the driven sleeve is expanded and fixed by the taper of the bolt Any metal expansion anchor may be used, such as a type to perform. Further, all screw bolts may be suspended, and an appropriate post-construction anchor is selected according to the required construction (S7).

  An appropriate sealing plate is attached to the work hole 24 provided in the ceiling finishing plate 23 (S8). At the same time, the ceiling pocket 21 is sealed by caulking airtightly around the attached sealing plate (S9).

  The dust containing asbestos is sucked into the dust collector 153 and passes through the high performance filter to filter the asbestos. The filtered asbestos is collected in the dust collection tank, and the air purified by the high performance filter is removed. It can be discharged (S11).

  Therefore, it is possible to limit the area affected by the ceiling work that generates dust containing asbestos, to prevent the dust from scattering into the surrounding equipment and living rooms, and to provide temporary facilities to prevent scattering. And no curing equipment is required. Further, this makes it possible to use the building where the work is being performed even during the ceiling work, and to make the work environment comfortable.

  Further, by attaching the fixed plate to the ceiling finishing plate, there is no need for an operator to support the apparatus main body, and the ceiling work can be performed safely and efficiently with a small number of workers. In this embodiment, the example in which the apparatus main body is provided with the fixing plate has been described. However, the fixing plate is not necessarily provided.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used to efficiently perform ceiling work on a concrete slab of a ceiling pocket without scattering harmful dust.

It is a cross-sectional schematic diagram which shows the structure of the ceiling work apparatus which concerns on this invention. It is a cross-sectional schematic diagram which shows the contraction state of the division member of the ceiling work apparatus which concerns on this invention. It is a perspective view which shows the division member in the said ceiling work apparatus. It is a flowchart which shows the operation | work procedure which places an anchor pin in concrete slab using a ceiling work apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ceiling work apparatus 11 Apparatus main body 12 Partition member 121 Inner cylinder 122 Outer cylinder 123 1st outer cylinder 124 2nd outer cylinder 125 Buffer material 13 Elastic spring 14 Fixing plate 141 Fastening hole 15 Dust collecting means 151 Dust collecting cover 152 Flexible Hose 153 Dust collector 16 Working means 161 Concrete drill 17 Housing 171 O-ring 172 Bearing 2 Living room 21 Ceiling pocket 22 Concrete slab 23 Ceiling finishing plate 24 Working hole

Claims (8)

A ceiling work device for performing work from the outside of the ceiling pocket on the concrete slab in the ceiling pocket at the top of the ceiling finishing plate and covered with a spray material,
The apparatus body includes a partition member that surrounds a region to be worked on the concrete slab and can partition the ceiling pocket into a work space and a non-work space,
The partition member is inserted with working means for performing work on the concrete slab and connected with dust collecting means capable of sucking the spray material,
Insert the partition member into the ceiling pocket through the work hole opened in the ceiling finishing board, abut the tip of the partition member against the lower surface of the concrete slab, and connect the base end to the work hole opened in the ceiling finishing board Let the work on the concrete slab from the outside of the ceiling pocket through this partition member, and prevent the spray material from scattering outside the device body by sucking the spray material in the work space by the partition member Ceiling work device characterized by.   2. The ceiling working apparatus according to claim 1, wherein the working means is a concrete drill that drills a hole for placing an anchor pin in a concrete slab.   2. The ceiling working apparatus according to claim 1, wherein the working means is an anchor driving rod for driving an anchor pin into an anchor pin driving hole formed in a concrete slab.   The partition member is formed in a cylindrical shape, covers the periphery of the working means in the working direction, and is extendable between the concrete slab and the ceiling finishing board. The ceiling work device according to the above.   5. The ceiling work apparatus according to claim 4, wherein the partition member includes an outer cylinder and an inner cylinder that is installed inside the outer cylinder, and the outer cylinder and the inner cylinder are arranged in the working direction of the working means. A ceiling work device characterized in that it can be expanded and contracted by sliding.   The ceiling work device according to claim 5, wherein the outer cylinder of the partition member includes a first outer cylinder having a small diameter, in which a base end portion of the inner cylinder is internally installed and connected to a work hole of the ceiling finishing plate, and at least the inner cylinder and A ceiling work comprising: a second outer cylinder disposed so as to cover an overlapping portion of the first outer cylinder, wherein the inner cylinder and the first outer cylinder are slidable in the operation direction. apparatus.   The base end portion of the partition member is provided with a hook-shaped fixing plate that is attached around the work hole on the lower surface side of the ceiling finishing plate and fixes the partition member. The ceiling work device according to the above.   The dust collecting means includes a dust collecting cover that communicates with the partition member and receives dust collected through the partition member, and a dust collector with a high-performance filter connected to the dust collection cover. The ceiling work apparatus according to any one of claims 1 to 7.

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