JPH0635065Y2 - Construction tools for pipe startup piping - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a slab connected to a slab, for example, when a pipe such as a conduit is to be erected from the inside of the slab into a partition wall that is to be started up. The present invention relates to a pipe start-up pipe construction tool used at a pipe start-up position when the pipe is started up above a plane.

(Prior Art) During pipe construction work, the impact of concrete placement causes the pipe to rise in its starting position, which causes it to enter a narrow partition wall (usually around 6 cm wide). Often the tube cannot be retracted and the concrete must later be fitted with concrete to correct the start-up position.

Conventionally, in order to solve such problems,
As described in Japanese Patent Laid-Open No. 62-7724, there is known a construction tool in which a permissible space is formed so that a margin can be provided for starting a pipe.

In this conventional construction tool, as shown in FIG. 9, the end of the pipe (P) which is started up from the slab (20) is inserted into the main body (11) through the insertion parts (13) (14). , The construction tool (10) is installed at the starting position, the concrete forming the slab (20) is placed, and after the concrete is cured,
By cutting and removing the closing part (12) of the construction tool (10), the rising end part of the pipe (P) is freely displaced in the allowable space part (15), and the pipe (P P) can be started up.

(Problems to be solved by the invention) However, this conventional construction tool has a problem in that it cannot be installed due to the place where the construction tool is installed, because the skeletal rebars arranged in the slab interfere. That is, in FIG. 9, the skeletal reinforcing bars (3
On the other hand, if the installation location of the construction tool (10) is in the middle of these skeletal rebars (30), the skeleton rebars (3)
0) does not get in the way and can be installed easily, but when you come close to the supporting bar rebar (30), the main body (11) of the construction tool (10)
However, there was a problem that it could not be installed in a predetermined position as it was because it was caught in the skeletal rebar (30).

Therefore, in such a case, it is necessary to cut and install a part of the skeletal reinforcing bar (30), which is a laborious task.

The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a construction tool capable of starting pipe construction from a predetermined position without depending on the reinforcing bar reinforcement arrangement.

(Means for Solving the Problem) In order to solve the above-mentioned problems, the construction tool according to the present invention is, “Pipe startup used when a pipe piped in a slab is raised above the slab surface. A construction tool for piping,
A pipe insertion port corresponding to the pipe diameter of the pipe piped in the slab is provided at one end, and there is an internal space having a diameter larger than the pipe insertion port and enabling the start-up position of the pipe to be displaced. Is formed in a bellows shape in order to bend the inner space toward the slab surface while facing the inner space to the slab surface, and is made of a tubular body that can be cut to open the inner space above the slab surface. It is characterized by that.

(Operation of the Invention) In such a construction tool according to the present invention, one end of the tubular body, through which the tubular body is inserted by bending the tubular body with the bellows-shaped tubular body, in the upward and leftward and rightward directions. Can be bent freely. This makes it possible to easily install and fix the construction tool at a predetermined start-up position while avoiding the adjacent supporting bar reinforcement.

In addition, by fixing the construction tool, placing concrete, and after curing the concrete, by cutting off one end of the bellows-shaped tubular body having the insertion hole for the pipe, the pipe inserted into the bellows-shaped tubular body is cut off. The start-up position can be freely displaced, and the pipe can be started up in the planned partition wall.

As a result, the pipe can be quickly started up from a predetermined position without being affected by the arrangement of the adjacent skeletal rebars.

Furthermore, since the tubular body is formed of a bellows, it can be easily bent even if the wall of the tubular body is made thick, and it has strength against the pressure due to the placing of concrete.

(Embodiment) Hereinafter, the present invention will be described in detail according to an embodiment shown in the drawings.

1 to 7 show an embodiment of a construction tool according to the present invention. The construction tool (1) is provided with pipe insertion openings (3) and (4) at both ends, and is formed of a bellows-shaped tubular body (2) into which the pipe is inserted. The cylindrical body (2) has flexibility by itself, and is formed by integrally molding a synthetic resin such as polyethylene or vinyl chloride resin, and the side wall of the cylindrical body (2) has a number of corrugations (5). Are formed. Therefore, as shown in FIG. 2, the tubular body (2) can be bent at one end in up, down, left, and right directions.

The shape of the bellows (5) may be a corrugated shape drawn by a gentle curve, or may be a shape in which peaks and valleys have continuous right and left irregularities.

The cylindrical body (2) may have a side wall formed by the bellows (5), or may be formed entirely by a thin wall of synthetic resin, which itself has flexibility and is Any material can be used as long as it can withstand the pressure of concrete due to the construction. In addition, in this embodiment, the tubular body (2) is formed in a cylindrical shape, but it is not limited to this and may be formed in a rectangular tubular shape as shown in FIG.

The insertion openings (3) and (4) formed at both ends of the tubular body (2) are
It has an inner diameter corresponding to the outer diameter of the tube, and is formed by a tube mouth projecting from both end surfaces of the tube body (2).

The insertion ports (3) and (4) may have any shape, but may be any structure as long as concrete does not enter the tubular body (2) with the pipe inserted.

In this embodiment, the insertion openings (3) and (4) are located at the centers of both end surfaces of the tubular body (2), and the tube inserted from one insertion opening (3) to the other insertion opening (4) is The cylindrical body (2) is housed and held substantially in the center thereof. Other insertion holes (3)
The (4) may be provided on both end surfaces of the tubular body (2) such that one insertion opening (3) and the other insertion opening (4) are located on a diagonal line of the tubular body (2).

In the inner space of the cylindrical body (2), the rising position of the pipe can be displaced. That is, as shown in FIG. 7, one end of the tubular body (2) is cut off after the concrete is poured and cured to open the upper surface, so that the rising end portion of the pipe (P) is made into the tubular body (2). The pipe (P) can be set up in the planned partition wall (40) by freely displacing it on the side of the one insertion port (3) in the internal space.

Now, a case will be described in which the construction tool (1) configured as described above is used to perform start-up piping of the conduit tube (P).

Now, in this case, prior to the concrete pouring of the slab wall (20), as shown in FIG. 4, the tip of the conduit tube (P) to be piped to the slab is provided with the tubular body (2) which is the construction tool (1). ) Is inserted from one insertion port (3) into the tubular body (2) and projected from the other insertion port (4), and the end of the conduit (P) is raised, and the construction tool ( 1) is installed at the specified starting position.

At this time, as shown in FIG.
If there is, bend one end of the cylinder (2) to the left and upward so as to avoid the supporting bar reinforcement (30) due to the flexibility of the cylinder (2), and install it at a predetermined starting position. You can

In addition, in order to install the construction tool (1) at the start-up position, the tubular body (2) may be directly tied to the skeletal rebar (30) with a steel wire or the like, or the end portion of the tubular body (2). The outer wall may be provided with a tubular portion into which the support rod can be inserted, the support rod may be inserted into the tubular portion, and the support rod may be fixed by binding the support rod to the skeleton rebar (30) with a steel wire or the like.

Then, as shown in FIG. 6, the slab wall (20) is concrete-placed so that one end of the tubular body (2) and the other insertion port (4) are exposed on the upper surface of the slab wall (20), and the other. Part is buried in the slab wall (20). At the time of this concrete pouring, since one end of the tubular body (2) is closed, there is no possibility that concrete will flow into the tubular body (2).

Then, after the concrete is cured, as shown in FIG. 7, one end of the tubular body (2) is cut off to open the upper surface of the tubular body (2) to construct one partition wall. by this,
The rising end of the conduit tube (P) is freely displaced in the internal space of the tubular body (2), and the conduit tube (P) is piped to a planned start-up position to be inserted into the partition wall (40). P).

Such a construction tool (1) is used not only for the start-up piping work of the electric conduit, but also for hot and cold water supply and drainage hot water pipes, gas pipes, and protective pipes for piping these inside. It can be used for plumbing of flexible pipes.

(Effect of the Invention) As described above, in the construction tool according to the present invention,
It is possible to bend the tubular body by a bellows-shaped tubular body and freely bend one end of the tubular body through which the tube is inserted in an upward direction, a lateral direction, or the like. This makes it possible to easily install the construction tool at a predetermined start-up position while avoiding the supporting skeleton reinforcing bars.

In addition, by installing construction tools, pouring concrete, and after curing the concrete, by cutting off one end of the cylinder having the insertion hole for the pipe, the start-up position of the pipe inserted into the cylinder can be set. It can be freely displaced and the pipe can be set up in the planned partition wall.

Therefore, compared to conventional construction tools that require labor to set up, such as cutting off a part of the skeleton rebar by being supported by the skeleton rebar in the vicinity, it depends on the bar arrangement state of the skeleton rebar in the vicinity. Instead, it is possible to quickly start up the pipe from a predetermined position.

Further, since the tubular body has a structure formed of bellows, it can be easily bent even if the wall of the tubular body is formed to be thick, and is excellent in the strength against the pressure due to the placing of concrete.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a construction tool according to the present invention,
Fig. 2 is a perspective view showing a bending state of a tubular body which is a construction tool, Fig. 3 is a sectional view in a state where the tubular body is bent, and Figs. 4 to 7 show usage states of the construction tool. Fig. 4 is a side view of the state where the construction tool before placing concrete is installed, Fig. 5 is a plan view of Fig. 4, Fig. 6 is a side view after placing concrete, and Fig. 7 is a view when building a partition wall. FIG. 8 is a side view, FIG. 8 is a perspective view showing another embodiment of the construction tool, and FIG. 9 is a sectional view showing a usage state of the conventional construction tool. Explanation of symbols 1 ... Construction tool, 2 ... Cylindrical body, 3,4 ... Insertion port, 5 ... Bellows, 20 ... Slab wall, 30 ... Spinner rebar, P ... Pipe.

Claims (1)

[Scope of utility model registration request] 1. A construction tool for pipe startup piping used when a pipe piped in a slab is raised above a slab surface, which corresponds to the pipe diameter of the pipe piped in the slab. Has a pipe insertion opening at one end, has a larger diameter than the pipe insertion opening, and has an internal space capable of displacing the rising position of the pipe, and further bends in the rising direction of the pipe and the internal space Is a bellows-shaped work piece for facing the slab surface, and is constituted by a tubular body cuttable to open the internal space above the slab surface.