JPH0548047B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a piping method for pulling out a pipe from inside a slab and connecting it to a pipe outside the slab in piping work that draws out a pipe from inside a slab and connects it to a pipe outside the slab. Relating to pipe extraction equipment.

(Prior Art) Conventionally, in piping work where a pipe is drawn out from inside a slab and connected to a pipe outside the slab, as shown in FIG.
erected, one end of the pipe 20 to be drawn out is fixed to this support 30, concrete is poured, and after forming a slab,
It was connected to a pipe outside the slab.

In addition, as shown in FIG.
0, fill the gap between the short pipe 40 and the pipe 20 with rags 41, etc., tilt and fix one end of the short pipe 40 so that it is approximately flush with the slab surface, and pour concrete. Another method was to remove the short pipe 40 by removing the concrete after forming the slab, and then pull out one end of the pipe 20 and connect it to a pipe outside the slab.

However, in the case of the conventional method shown in Figure 8,
When pouring concrete, one end of the support column 30 or pipe 20 protrudes from the slab surface, which is a great hindrance to leveling the poured concrete and is very time-consuming. 30 and the pipe 20 are frequently knocked down, and one end of the pipe 20 becomes embedded in the slab, resulting in the problem that concrete must be poured later. In addition, after slab formation,
The work required to remove the pillars 30 that protruded from the slab surface was time consuming.

In the case of the conventional construction method as shown in Fig. 9, the pipe 20
A large amount of concrete had to be poured to pull out one end, making the work extremely tedious. In addition, one end of the short pipe 40 may be buried in the concrete, and there is a problem that it becomes difficult to know where it will be placed later.

On the other hand, as a method of fixing one end of the pipe 20 so that it does not protrude from the slab surface and also preventing one end of the pipe 20 from being buried in the concrete, as shown in FIG.
One end of the pipe 20 to be piped inside the slab is deeply inserted into this block 50, and one side of the block 50 is fixed so that it is substantially flush with the slab surface, concrete is poured, and after the slab is formed, The conventional method was to connect to a pipe outside the slab.

However, even with the construction method using blocks 50 as described above, it is difficult to remove the foamed resin blocks 50 from inside the slab after forming the slab.
Since the block 50 was scraped out in small pieces, it was difficult to clean up afterwards. Also, tube 20
When inserting one end of the tube into the block 50, the tube 20 tends to meander or tilt, so it is quite time-consuming to insert the tube in a way that prevents this from happening.
In addition, in order to prevent the pipe 20 from protruding outside the block 50 due to such meandering or inclination of the pipe 20, if a large block is used, it will affect the strength of the slab, and the block 50 may be removed. There were problems such as the need to backfill the depressions later.

Furthermore, in the case of the construction method using block 50,
Since one end of the tube 20 is pushed deeply into the block 50, it takes time and effort to cover the end of the tube 20 with a cap to prevent foamed resin from getting stuck inside the tube, and such a foamed resin block 50 requires on-site work. The problem was that the size of the insulators would vary because they were manufactured using odd pieces of insulation material, etc., depending on the person.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and provides a slab that allows piping work to be carried out efficiently by pulling out a pipe from inside the slab and connecting it to a pipe outside the slab with simple work. It is an object of the present invention to provide a piping method for drawing out a pipe from the inside and a pipe drawing tool used therefor.

(Means for Solving the Problems) The piping method according to the present invention is, as claimed in claim 1, “a pipe drawing method for drawing out one end of a pipe piped in a slab above the slab, Insert one end of the tube inside the tube into a tube drawer that has a storage section that stores the tube end of the length necessary for pulling it out above the slab, and insert the tube drawer so that the top surface is the top surface of the slab. The tube is fixed to the formwork or the support steel so that it is approximately flush with the frame, then concrete is poured, and after the slab is formed, the top surface of the tube drawer is opened and one end of the pipe inside the tube drawer is placed on the slab. It is characterized by ``drawing out''.

Further, the tube drawer according to the present invention is provided in claim 2.
As described, "There is a storage part to store one end of the pipe piped inside the slab, an insertion port to insert one end of the pipe into the storage part, and an opening to pull out one end of the pipe stored after concrete pouring. an occlusion plate that causes
It is composed of a fixing part that fixes the storage part to the formwork or the support steel, and the storage part is provided so as to store the pipe end of the length required for pulling the slab upward along the closing plate. '', and the tube drawer according to claim 3 is characterized in that the blockage plate of the slab tube drawer is formed of a punchable knockout, and the tube drawer according to claim 4 is , The pipe drawing tool according to claim 5, wherein the "fixing part is formed of a cylindrical body through which a support rod which is installed and fixed to the support rod in the slab is inserted." is characterized by ``equipped with a connecting means by which the tube drawers can be attached and detached from each other and connected in parallel.''

(Function) In the above piping method, the pipe pull-out tool does not protrude from the slab surface during concrete pouring, and after the slab is formed, the top surface of the pipe pull-out tool is opened and the pipe inside the pipe pull-out tool is opened. Since one end is pulled out and connected to a pipe outside the slab, the poured concrete can be leveled quickly, and there is no need to peel the concrete or remove it from the inside of the slab after forming the slab, unlike with foamed resin blocks. Piping can be efficiently drawn out from inside.

In addition, when using the pipe drawer according to claims 2 to 5, it is sufficient to insert one end of the pipe as it is from the insertion opening and store it in the storage part, and the storage part is connected to the formwork or support rod reinforcement. The fixing part that fixes the
The closing plate can be fixed in the slab so that the position thereof is substantially flush with the slab surface formed by concrete pouring, and the pipe puller does not protrude from the slab surface during concrete pouring. Further, the one end of the tube can be easily pulled out by the closing plate.

Further, in this tube drawing device, the storage portion accommodates the minimum portion necessary for drawing out the tube, and no unnecessary depressions are formed in the slab.

Furthermore, in the case of the tube drawer according to claim 3, the tube outlet can be easily opened by punching with a hammer or the like in the blocking plate formed by knocking out, and the tube drawer according to claim 4 In the case of drawers, they are fixed with support rods that are installed and fixed to the support beams in the slab, so they can be fixed reliably, and compared to when fixed to formwork,
Fixing members such as nails are not exposed outside the slab. Further, in the case of the pipe drawing device according to the fifth aspect, when a plurality of pipes are drawn out from the slab at the same time, they can be easily connected in parallel using the connecting means.

(Example) Hereinafter, the present invention will be described in detail according to an example shown in the drawings. For convenience of explanation, the tube drawer will be explained first, and then the piping method will be explained.

1 and 2 show an embodiment of a tube drawer 10 according to the present invention.

The tube drawer 10 is made entirely of synthetic resin, and includes a lid body having a closing plate 11 on the upper part, and a storage part 12 formed below the closing plate 11 in which one end of the tube is stored. are fitted and glued together.

As shown in FIG. 3, the closing plate 11 has a knockout formed around the opening with a thin wall 11a, and is adapted to form an outlet for the tube 20 by punching. As the occlusion plate 11,
In addition to the above-mentioned knockout, the entire surface may be formed with a thin wall. Note that the closing plate 11 has enough strength that it will not be deformed even if poured concrete hits it.

The housing portion 12 is formed by a peripheral wall having a substantially U-shaped cross section so as to wrap around the outer periphery of the tube 20, and is elongated in the insertion direction of the tube 20 to be inserted.
The length of the storage section 12 is set to such a length that it does not interfere with the connection work with the pipe 20 outside the slab.

An insertion opening 13 is formed in one end side wall of the storage portion 12 with the direction slightly facing downward. This is done by gently bending the pipe 20 to bring one end of the pipe 20 installed inside the slab to the slab surface.
This is to correspond to the formation of the insertion opening 13, and the storage portion 12 is also formed with an inclined surface 12a. As a result, the pipe 20 installed inside the slab
0 can be stored by pulling one end diagonally into the storage part 12.

Cylindrical portions 14 through which the support rods 23 are inserted in the horizontal direction are provided on both end side walls of the storage portion 12, respectively. This cylindrical part 14 is a fixing part for fixing the pipe drawer 10 in the slab, and as shown in FIG. It is becoming more and more like this. The height of the support rod 23 inserted into the cylindrical portion 14 is adjusted so that the position of the closing plate 11 of the tube drawer 10 is almost the same as the slab surface formed by pouring concrete, and the support rod 23 is placed inside the slab. It is designed to be constructed and fixed to reinforced support beam reinforcing bars 22.

In the present invention, the fixing part for fixing the tube puller 10 is not limited to the case where the tube part 14 through which the support rod 23 is inserted is formed, but the position of the closing plate 11 of the tube puller 10 is formed by pouring concrete. It is sufficient that the tube drawer 10 is fixed so as to be substantially flush with the slab surface.

Further, in this embodiment, a connecting part 15 is formed on the side edge of the closing plate 11 with unevenness and is slidably fitted from the vertical direction, so that a plurality of tube drawers 10 can be connected side by side if necessary. It's summery. Such a connecting means is, for example, the closing plate 11.
A protruding piece having a screw insertion hole may be provided in the protruding piece, and the protruding pieces may be overlapped and screwed together, or the protruding pieces may be fitted and connected by corresponding unevenness,
Any tube drawer 10 may be used as long as it can be attached and detached from each other and connected in parallel.

Note that the tube drawing tools 10 are each constructed separately as in the embodiment described above. In addition to a structure in which the lid body having the closing plate 11 and the storage portion 12 are fitted together and bonded together, the lid body having the closing plate 11 and the storage portion 12 may be attached together with screws, etc. Alternatively, the closing plate 11 and the storage portion 12 may be integrally molded.

Next, regarding the piping method, the pipe drawing tool 10
The following is an example of using .

First, as shown in FIG.
3 to a predetermined length, and one end of the pipe 20 to be piped inside the slab is covered with the pipe puller 10.

Next, as shown in FIG. 5, the support rods 23 are inserted into the cylindrical portions 14 of the side walls at both ends of the storage section 12, and the support rods 23 are installed on the nearby strut reinforcement bars 22 arranged in the slab. The height is adjusted so that the position of the closing plate 11 of the pipe drawing tool 10 is almost the same as the slab surface formed by pouring concrete, and the support rod 23 is
are tied to the support frame reinforcing bars 22 with wire or the like, and the tube drawer 10 is fixed within the slab.

Next, as shown in FIG. 6, concrete is poured to form a slab C. At this time, the top surface of the pipe drawer 10 may be covered with concrete, forming a thin film of concrete. However, since this part has a different color from the concrete that forms the surrounding slab C, the position of the tube pulling tool 10 can be easily identified at a glance, and by simply tapping the part, the overlying concrete can be removed and the pipe removed. The closing plate 11, which is the upper surface of the drawer 10, can be easily exposed. After the concrete has cured, the knockout of the closing plate 11 is punched out to open the outlet of the pipe 20, as shown in FIG. When the blocking plate 11 is formed with a uniform thickness, it can be cut out with a knife,
Cut it out using a hand-held tool with a bit attached. Then, one end of the tube 20 inside the storage section 12 is pulled out onto the slab C. Alternatively, pull out the cable inside the tube 20.

One end of the drawn-out tube 20 is connected to, for example, a tube 21 outside the slab.

In addition, the piping method and pipe drawing tool of the present invention are as follows:
It can be applied to electric conduit pipes, flexible gas pipes, water supply/drainage pipes, and flexible pipes that protect these pipes.

(Effects of the Invention) As explained above, the piping method according to the present invention does not allow the pipe pull-out tool to protrude from the slab surface during concrete pouring, allows quick leveling of the poured concrete, and Unlike foamed resin blocks, there is no need to remove the pipes from inside the slab after forming the slab, and the piping work to pull out the pipes from inside the slab and connect them to the pipes outside the slab can be done easily and efficiently. .

In addition, even if concrete covers the top surface of the pipe drawer when concrete is placed to form a slab, the concrete on the slab surface where the pipe puller is located is thinner and has a different color, so the pipe can be easily removed. The position of the pull-out tool can be clearly identified at a glance, and by simply tapping the area, the concrete covering the top surface of the pipe pull-out tool can be peeled off and the top surface of the pipe pull-out tool can be exposed.

In addition, the pipe drawer according to the present invention can be used by simply inserting one end of the pipe from the insertion port, placing it in the storage part, and fixing it in the slab. There is no need to remove the foamed resin block from inside the slab, there is no need to put a cap over the end of the pipe, etc., and the pipe can be pulled out from inside the slab efficiently and connected to the pipe outside the slab with extremely simple work. .

Furthermore, in the tube drawer according to the present invention, the storage section accommodates the portion necessary for drawing out the tube, and no unnecessary depressions are formed in the slab. Therefore, problems such as unnecessarily forming depressions in the slab and affecting the strength of the slab do not occur.

Furthermore, in the case of the tube drawer according to claim 3, the tube outlet can be easily opened by punching the closing plate with a hammer or the like, and in the case of the tube drawer according to claim 4, Since it is fixed with support rods that are installed and fixed to the support beams inside the slab, it can be fixed reliably and there is no need to expose fixing members such as nails outside the slab compared to when fixing to formwork. do not have.

Furthermore, in the case of the tube drawer according to claim 5,
When a plurality of pipes are drawn out from within the slab at the same time, they can be easily connected in parallel using the connecting means, which is convenient.

[Brief explanation of drawings]

1 and 2 show an embodiment of the tube drawer according to the present invention, FIG. 1 is a perspective view thereof, FIG. 2 is a perspective view of the device in use with the closing plate opened, and FIG. 4 to 7 are partially enlarged cross-sectional views of the closing plate, and each cross section shows the piping method according to the present invention in the order of steps when the pipe is drawn out from inside the slab using the pipe drawing tool shown in FIG. 1. 8 and 9 are sectional views showing conventional piping construction methods, and FIG. 10 is a perspective view showing a conventional piping construction method using foamed resin blocks. Explanation of symbols 10...Pipe drawing tool, 11...Closing plate, 12
... Storage section, 13 ... Insertion port, 14 ... Cylindrical section, 1
5... Connecting part, 20... Pipe, 22... Spine reinforcement,
23...Support rod.

Claims (1)

[Claims] 1. A method for drawing out one end of a pipe installed in a slab above the slab, the method comprising: Insert it into a tube drawer equipped with a storage section that stores the length of the tube end, and
The pipe puller is fixed to the formwork or support steel reinforcement so that its upper surface is substantially flush with the top surface of the slab, concrete is poured, and after the slab is formed, the upper surface of the pipe puller is opened and the pipe is pulled out. A piping method for drawing out a pipe from inside a slab, which is characterized by drawing out one end of the pipe inside the fitting onto the slab. 2. A storage part that stores one end of the pipe piped inside the slab, an insertion port for inserting one end of the pipe into the storage part, and a closing plate that is opened to pull out one end of the pipe stored after concrete pouring. , and a fixing part that fixes the storage part to the formwork or the strut reinforcement, and the storage part is provided so as to store a pipe end of a length necessary for pulling the slab upwards along the closing plate. A device for drawing out pipes onto a slab. 3. The tube drawer according to claim 2, wherein the closing plate is formed of a knockout that can be punched out. 4. The pipe pulling tool according to claim 2 or 3, wherein the fixing part is formed of a cylindrical body through which a support rod is inserted and fixed to the support rod in the slab. 5. The tube drawer according to claim 2, 3 or 4, further comprising connecting means for connecting the tube drawers to each other in a parallel state.