JPH09178255A - Connection method of duct and through sleeve used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To significantly improve connection work efficiency by simply and easily connecting two ducts arranged isolatedly by a concrete body of a building through sleeve piercing the concrete body. SOLUTION: A through sleeve S which has connection sleeves 2 and 3 free to pull out or house at both end parts of a sleeve body 1 comprising a double cylinder of an inner cylinder 1i and an outer cylinder 1o is held on a reinforced frame Fr to be set in a formwork space. The inner and outer cylinders 1i and 1o of the sleeve body 1 are pulled out and fastened on die panels P1 and P2 and the sleeve body 1 is fixed piercing the concrete body Fc by casting concrete. Thereafter, the die panels P1 and P2 removed and ducts are connected separately to both ends of the connection sleeves 2 and 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct connection for connecting a pair of ducts arranged in a concrete skeleton constituting a skeleton of a building with a floor slab, a beam, a column, a wall and the like separated from each other. A method and a penetrating sleeve for direct use in the method.

[0002]

2. Description of the Related Art In general, a building is fixed by penetrating a through sleeve to a floor slab, a beam, a pillar, a wall or the like of a concrete frame forming a skeleton of the building, and the through sleeve is arranged to separate the building body from each other. The two ducts for air conditioning, smoke exhaust, etc. are connected and connected.

By the way, conventionally, the through sleeve is housed in the formwork space and fixed to the formwork panel, and then the through sleeve is embedded and fixed in the concrete frame by placing concrete in the formwork space, and then this through A connecting sleeve with a diameter smaller than that of the sleeve and longer than that of the sleeve is passed through the through sleeve, and the annular gap between the connecting sleeve and the through sleeve is filled with a filling material such as mortar or rock wool to fix the connecting sleeve. The left and right ducts arranged on the left and right sides of the concrete skeleton are connected to the projecting ends of the connecting sleeve.

[0004]

By the way, in such a conventional duct connecting method, it is necessary to accurately set the penetrating sleeve in a proper position in the mold space, and the diameter of the penetrating sleeve is smaller than that of the penetrating sleeve. In addition to requiring a long and long connecting sleeve, a filling operation for filling the gap between the sleeve and the connecting sleeve in the annular gap formed between the penetrating sleeve and the connecting sleeve. Will be required.

However, since the work of setting the through sleeve and the work of filling the filling material depend on human labor, the work is extremely troublesome, and it is necessary to ensure the safety of the worker. Since the filling material spills out during the filling work of (1), there is a problem that a subsequent cleaning work is required, which causes a large increase in cost as a whole.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a novel duct connecting method which solves all the problems of the prior art and a penetrating sleeve used directly in the method. .

[0007]

In order to achieve the above-mentioned object, a feature of the invention of claim 1 is that a concrete skeleton of a building is provided with two piercing sleeves which are pierced and fixed therein. A method for connecting a duct through a duct, wherein a sleeve body of a through-sleeve is formed in a contracted state by inserting an inner cylinder and an outer cylinder in a stretchable manner at appropriate positions of a frame of a reinforcing bar. A step of holding and housing this rebar frame in the mold space of the mold, and extending the sleeve main body so that the opening end edges of the inner cylinder and the outer cylinder are opposed to each other on the left and right mold panels of the mold. Affixing by contacting with, the step of removing the form after placing concrete in the form space, the inner cylinder and the opening ends of the outer cylinder, the left and right ducts on both sides of the concrete skeleton, respectively. And the step of connecting.

Further, in order to achieve the above-mentioned object, a feature of the invention of claim 2 is that it is fixed by penetrating into a concrete frame of a building, and is arranged with the frame separated.
A through-sleeve for connecting a duct of a book, comprising a sleeve body in which an inner cylinder and an outer cylinder are telescopically inserted, and a pair of connection sleeves inserted into both ends of the opening of the sleeve main body. The inner cylinder and the outer cylinder are respectively provided with stopper members at the opening end edges for abutting and fixing the inner cylinder and the outer cylinder on the facing surfaces of the left and right mold panels of the mold.

[0009]

[Function] A penetrating sleeve having a pair of connecting sleeves housed therein is housed in an appropriate position of the rebar frame formed by framing a plurality of rebars, and the sleeve body of the penetrating sleeve is held by the rebar frame. The frame was hung by a suspension machine such as a crane, and was lowered and fixed in the form space of the form, and both opening edges of this sleeve body were made to face the inner surface of the form panel facing the form frame. After that, the inner cylinder and the outer cylinder of the sleeve body are pulled out from the storage position and extended, and their opening end edges are brought into contact with the inner surface of the mold panel to temporarily fix them to the left and right mold panels.

After that, concrete is poured into the mold space, and a penetration sleeve integral with the reinforcing bar frame is embedded and fixed in the concrete frame.

After the construction of the concrete skeleton, if the formwork is removed, the through sleeve is fixed through the concrete skeleton, and the left and right ducts are connected to both ends of the through sleeve through the connection sleeves.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS.

First, referring to FIGS. 1 and 2, the structure of the through sleeve used directly in the duct connecting method will be described. FIG. 1 is a perspective view of the through sleeve, and FIG.
FIG. 2 is a vertical sectional view of a through sleeve taken along line -2.

The penetrating sleeve S is composed of a sleeve body 1 formed in a hollow cylindrical shape with both ends open, and a pair of left and right connecting sleeves 2 and 3 fitted in both ends of the sleeve body 1 so as to be drawn out and stored. It is configured.

The sleeve body 1 is formed as a double cylinder by forming the inner cylinder 1i and the outer cylinder 1o, which are formed in the shape of a hollow cylinder by a zinc-iron plate, so that the inner ends thereof can expand and contract. One connecting sleeve 2 is fitted to the outer end of the inner cylinder 1i, and the other connecting sleeve 3 is fitted to the outer end of the outer cylinder 3 so as to be drawn out and stored. Inner cylinder 1i and outer cylinder 1o
A plurality of stopper members 4 and 5 having nail holes at substantially equal intervals in the circumferential direction are integrally fixed to the outer end edge of the outer member outwardly.

The outer peripheral surfaces of the inner cylinder 1i and the outer cylinder 1o forming the sleeve body 1 are circumferentially arranged at approximately 90 degrees.
The four fixing bolts 6 and 7 are fixed by welding or the like with a phase difference of °. And these fixing bolts 6
Wing nuts 8 are screwed into the inner ends of and 7 from the inside of the inner cylinder 1i and the outer cylinder 1o, respectively.

On the other hand, the pair of left and right connecting sleeves 2, 3
Are the inner cylinder 1i and the outer cylinder 1 made of a zinc iron plate, respectively.
It is formed in a hollow cylindrical shape having a diameter slightly smaller than o. One connecting sleeve 2 is drawn out to the inner peripheral surface of the end of the inner cylinder 1i, and the other connecting sleeve 3 is drawn to the inner peripheral surface of the end of the outer cylinder 1o. -It is inserted so that it can be stored.

Since the pair of left and right connecting sleeves 2 and 3 are formed to have substantially the same diameter, some play is generated between the outer cylinder 1o and the connecting sleeve 3, but the play is absorbed between them in order to absorb this play. You may make it interpose a spacer.

The connecting sleeve 2 on the inner cylinder 1i side is formed with four slits 10 extending in the axial direction at intervals in the circumferential direction, and the inner ends of these slits 10 are open. A hook groove 10 ₁ extending in a substantially right angle direction is formed near the open end. Further, the connecting sleeve 3 on the outer cylinder 1o side is also formed with four other slits 11 that are out of phase with the slit 10 of the connecting sleeve 2 on the inner cylinder 1i side. Its inner end is open, and a hook groove 11 ₁ in a substantially right-angled direction is formed near the open end.
Are formed. An inner end of a fixing bolt 6 of the inner cylinder 1i is slidably engaged with a slit 10 of the one connecting sleeve 2, and a wing nut 8 screwed to the fixing bolt.
The connection sleeve 2 can be fixed to the inner cylinder 1i by tightening, and the slit 11 of the other connection sleeve 3 can be fixed.
An inner end of a fixing bolt 7 of the outer cylinder 1o is slidably engaged with the outer cylinder 1o, and the connecting sleeve 3 can be fixed to the outer cylinder 1o by tightening a wing nut 8 screwed onto the fixing bolt 7. it can. The connection sleeves 2 and 3 are stored, and the slits 10 and 1
By engaging the closed outer end of 1 with the fixing bolts 6, 7, the connecting sleeves 2, 3 can be locked in the retracted retracted position, and the connecting sleeves 2, 3 can be pulled out and turned slightly. The slits 10 and 11 are moved to the hook groove 10 ₁ ,
By engaging 11 ₁ with the fixing bolts 6 and 7, respectively, the connecting sleeves 2 and 3 can be locked in the extended drawn-out position.

Thus, the fixing bolts 6, 7 and the slit 1
0, 11 and wing nut 8 are connected sleeves 2, 3 of
A guide fixing means for the sleeve body 1 is configured.

Next, with reference to FIGS. 3 to 6, a procedure for penetrating and fixing the penetrating sleeve S configured as described above to the concrete skeleton Fc will be described.

FIG. 3 is a process diagram showing a state in which the penetrating sleeve S is installed in the mold space C, FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, and FIG. _1, process view of a state fixed to the P _2, FIG. 6 shows a process diagram of a state that connects the pair of duct D _1, D ₂ in the through sleeve S.

[0023] First, as shown in FIGS. 3 and 4, a penetrating sleeve S having a pair of connecting sleeves 2 and 3 housed therein is housed in an appropriate position of a reinforcing bar frame Fr, which is formed by framing a plurality of reinforcing bars 15. Is held relatively loosely in the rebar frame Fr by a fastening means such as a wire 16, the rebar frame Fr is hung by a suspending machine such as a crane, and is hung in the frame space C of the frame Ff and fixed there. . At this time, both open end edges of the penetrating sleeve S are opposed to the inner surfaces of the mold panels P ₁ and P ₂ that face each other of the mold frame Ff.

[0024] Next, as shown in FIG. 5, the inner and outer cylinders 1i and 1o of the sleeve body 1 of the penetrating sleeve S are pulled out and extended, and the outer end surfaces of the openings are connected to the mold panels P ₁ and P.
Is brought into contact with the _second inner surface, the inner, outer tube 1i, temporarily fixed to the mold panel P _1, P ₂ of the left and right through the stop members 4 and 5 respectively by the 1o nail 17.

After that, concrete is poured into the formwork space C to construct a concrete frame Fc such as a pillar, wall, beam or floor slab. At this time, the through sleeve S integrated with the rebar frame Fr is a concrete frame. It is integrally embedded and fixed in Fc.

.. After the construction of the concrete skeleton Fc, if the form Ff is removed, both opening edges of the sleeve body 1 of the penetrating sleeve S are opened to the outside so as to be flush with the outer surface of the concrete skeleton Fc and penetrate the concrete skeleton Fc. Fixed.

[0027] Next, as shown in FIG. 6, the left and right connecting sleeves 2 and 3 are drawn outward from the outer surface of the concrete skeleton Fc, and the concrete skeleton F is attached to the outer end portions thereof.
The left and right ducts D ₁ and D ₂ , which are arranged with a distance c, are connected.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various embodiments are possible within the scope of the present invention.

For example, in the above-mentioned embodiment, the penetrating sleeve is formed in a cylindrical shape, but it may be formed in a rectangular tube shape such as a square tube, and the duct is appropriately provided for fire protection, smoke prevention, etc. Of course, a damper may be connected. Further, the sleeve main body may be embedded and fixed in the concrete skeleton, and then the connection sleeves may be connected to both ends thereof.

[0030]

As described above, according to the invention of the method for connecting the ducts as set forth in claim 1, the two ducts which are arranged with the concrete skeletons separated from each other are provided with the through sleeve which penetrates the concrete skeletons. It is possible to make a simple, easy, and reliable communication connection, improve the connection work efficiency, and significantly reduce the connection cost.

Further, according to the invention of the penetrating sleeve described in claim 2, in carrying out the method for connecting the duct, the sleeve body of the penetrating sleeve can be accurately and easily fixedly installed in the mold space, and the sleeve can be mounted. Since the main body can be easily abutted and fixed to the mold panel, the connecting work of the duct becomes simple and easy, and it can greatly contribute to the reduction of the connecting cost of the duct.

[Brief description of the drawings]

FIG. 1 is a perspective view of a through sleeve.

FIG. 2 is a vertical cross-sectional view of the penetrating sleeve taken along line 2-2 of FIG.

FIG. 3 is a process drawing of a state in which a through sleeve is installed in a mold space.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is a process diagram showing a state in which the through sleeve is fixed to the form panel.

FIG. 6 is a process drawing of a state in which a pair of ducts is connected to a through sleeve.

[Explanation of symbols]

1 ・ ・ ・ Sleeve body 1i ・ ・ ・ ・ ・ ・ Inner cylinder 1o ・ ・ ・ ・ ・ ・ Outer cylinder 2 ・ ・ ・ ・ ・ Connecting sleeve 3 ・ ・ ・ ・ ・ ・ Connecting sleeve 4 ・...... stop member 5 ....... stop member C ....... formwork space D ₁ ......... duct D ₂ ...... duct Fc · · ··· Concrete frame Ff ··· Form Fr ··· Reinforcing bar P ₁ ··· Form panel P ₂ ··· Form panel S .. ..Penetrating sleeves

Claims (2)

[Claims] 1. A concrete frame (Fc) of a building,
Using a penetrating sleeve (S) fixed therethrough, 2
A method for connecting ducts by penetrating the ducts (D ₁ , D ₂ ) of a book, wherein an inner cylinder (1i) and an inner cylinder (1i) are provided at appropriate positions of a rebar frame (Fr) to be framed.
The sleeve main body (1) of the penetrating sleeve (S), which is inserted into the outer cylinder (1o) in an expandable and contractible manner, is held in a contracted state, and the rebar frame (Fr) is formed into a mold (Ff) mold. A step of accommodating in the frame space (C), and extending the sleeve body (1) so that the opening end edges of the inner cylinder (1i) and the outer cylinder (1o) are connected to the left and right mold panels of the mold (Ff) ( a step P _1, to abut against fixed to opposite surfaces of the P _2), after Da設concrete into the mold space (C), a step of removing the mold and (Ff), the inner tube and (1i) , The left and right ducts (D ₁ , D) on both sides of the concrete skeleton (Fc) at both ends of the opening of the outer cylinder (1o).
₂ ) A step of connecting each of the above, and a method for connecting ducts, the method including: _2. A through sleeve for connecting _two ducts (D ₁ , D ₂ ) which are fixed by penetrating through a concrete frame (Fc) of a building and which are arranged with the frame (Fc) separated. (S) is a sleeve body (1) formed by inserting an inner cylinder (1i) and an outer cylinder (1o) in a stretchable manner, and is fitted into both ends of the opening of the sleeve body (1). A pair of connecting sleeves (2,3)
The inner cylinder (1i) and the outer cylinder (1o) are fixed to the opening end edges of the inner cylinder (1i) and the outer cylinder (1o) by abutting against the facing surfaces of the left and right mold panels (P ₁ , P ₂ ) of the mold (Ff). Penetration sleeve, characterized in that it is provided with respective stop members (4, 5) for