JP3738197B2 - Sleeve formwork and method for constructing opening for equipment piping using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sleeve mold and a method for constructing an opening for equipment piping using the same.
[0002]
[Prior art]
The opening for facility piping formed in the concrete floor is formed by installing a paper cylinder 29 in which the upper and lower sides are closed with gum tape 28 in the slab form 30 as shown in FIG. . And as shown in (2) of the figure, the lid | cover 32 is installed in the upper surface of the opening 31 for equipment piping formed of the said cylinder 29. FIG.
[0003]
[Problems to be solved by the invention]
However, since the opening for equipment piping uses a paper cylinder, there are the following problems.
(1) The cylinder becomes a waste material.
(2) The cylinder cannot be recycled because of the adhering concrete.
(3) Since the cylindrical body is cut from a long one according to the thickness of the floor, it takes time to form it.
(4) It was dangerous because the lid closing the opening protruded from the floor.
[0004]
The present invention has been made in view of these problems, and an object of the present invention is to provide a sleeve mold that can be expanded and contracted and a method for constructing an opening for equipment piping using the same.
[0005]
[Means for Solving the Problems]
Means for solving the above problems is that the sleeve mold according to the first aspect of the present invention is such that the inner cylinder provided with the bottom plate is rotatably inserted into the outer cylinder provided with the upper lid, and the protrusions on the outer surface of the inner cylinder are externally attached. The sleeve mold according to claim 2 is inserted into a level adjustment groove on the inner surface of the cylinder, and the level adjustment groove is composed of a vertical groove and lateral grooves alternately provided on both sides of the vertical groove. In Claim 1, a sealing material is provided in the lower part of the outer cylinder. In addition, the sleeve mold of the invention of Claim 3 is attached, and the fixing bolt is attached to the bottom plate of the inner cylinder in Claim 1. The bottom plate is provided with a recess for receiving the fixing plate at the bottom of the fixing bolt, and the method for constructing the opening for equipment piping according to the invention of claim 4 is characterized in that the outside of the sleeve mold frame of claim 1 is provided. Pull the cylinder out of the inner cylinder and fix it to the slab formwork with fixing bolts. After adjusting to a predetermined length covered with a outer tube to inner tube is fixed by fixing bolts, characterized in that concrete is cast on the slab form within.
[0006]
Since the sleeve formwork can be diverted, it does not become waste after demolding. The length of the sleeve form can be adjusted according to the thickness of the floor. The upper surface of the lid that closes the opening and the floor surface can be flush with each other. One sleeve mold can easily construct an opening for equipment piping corresponding to slabs having different thicknesses.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the sleeve mold according to the present invention and a method for constructing an opening for equipment piping using the same will be described with reference to the drawings. In each embodiment, the same components are described with the same reference numerals. Only different configurations will be described with different reference numerals.
[0008]
FIG. 1 shows a sleeve mold 1 according to the first embodiment. This sleeve mold 1 is constructed by inserting an inner cylinder 5 provided with a bottom plate 4 into a circular outer cylinder 3 provided with an upper lid 2 so that the protrusion 6 on the outer surface of the inner cylinder is a level adjusting groove on the inner surface of the outer cylinder. 7 so that the inner cylinder 5 can be expanded and contracted. The level adjusting groove 7 is composed of a vertical groove 8 extending to the lower end of the inner cylinder 5 and horizontal grooves 9 provided alternately on both sides of the vertical groove 8. As shown in FIG. In some cases, the inner cylinder 5 can slide, but when the projection 6 is in the lateral groove 9, it cannot slide. A sealing material 10 such as a rubber piece is provided at the lower portion of the outer cylinder 3, and a collar 11 is provided at the edge of the upper lid 2. A rubber seal may be packed between the sealing material 10 and the inner cylinder 5. Further, a recess 12 is provided in the bottom plate 4 of the inner cylinder 5 so as to be retracted inward, and an attachment hole 13 is opened on the upper surface.
[0009]
FIG. 3 shows a sleeve mold 14 according to the second embodiment. This sleeve mold 14 has a fixing bolt 15 attached to the recess 12 in the bottom plate 4 of the inner cylinder, and has the same configuration as the sleeve mold 1 except for this. The fixing bolt 15 is for fixing the sleeve mold 14 by a fixing plate 16.
[0010]
Next, the construction method of the opening for equipment piping using the sleeve formwork 14 of 2nd Embodiment is demonstrated. First, as shown in FIG. 4, the outer cylinder 3 is pulled out from the inner cylinder 4, and the fixing bolt 15 removed from the inner cylinder 4 is fixed to the slab mold 18 with a nail 17. Then, when the inner cylinder 4 is installed so that the fixing bolt 15 is inserted into the mounting hole 13 and fixed with the nut 20, the fixing plate 16 is in the recessed portion 12. Next, the outer cylinder 3 is put on the inner cylinder 4 so that the protrusion 6 enters the vertical groove 8, adjusted to a predetermined length, and then rotated to put the protrusion 6 into the horizontal groove 9 from the vertical groove. After the sleeve mold 14 is thus installed, concrete 20 is placed on the slab mold 18.
[0011]
Next, as shown in FIG. 5, when the sleeve mold 14 is removed after the concrete 20 has hardened, an opening 21 for equipment piping having an insertion groove 22 on the upper surface is formed. And if the lid | cover 24 provided with the flange 23 inserted in this insertion groove | channel 22 is installed in the upper surface of the opening 21, the upper surface of the said lid | cover 24 and a floor surface will become flush | level. Next, a drain pipe 25 or the like is piped in the opening 21, and a heat insulating material 26 is filled in a gap between the drain pipe 25 and the opening 21, and a mortar 27 is filled in the upper part.
[0012]
【The invention's effect】
Since the sleeve form can be diverted, it does not become a waste material even after its demolding.
[0013]
The length of the sleeve form can be adjusted according to the thickness of the floor.
[0014]
The upper surface of the lid that closes the opening can be flush with the floor surface.
[0015]
One sleeve mold can easily construct an opening for equipment piping corresponding to slabs having different thicknesses.
[Brief description of the drawings]
1A is a cross-sectional view of a sleeve mold according to a first embodiment, and FIG. 1B is a cross-sectional view taken along line AA of FIG.
FIG. 2 is a cross-sectional view of the sleeve mold according to the first embodiment which is expanded and contracted.
FIG. 3 is a cross-sectional view of a sleeve mold according to a second embodiment.
FIGS. 4A and 4B are cross-sectional views in which the sleeve mold according to the second embodiment is installed in a slab mold, and FIG. 4B is a cross-sectional view taken along the line BB in FIG.
FIG. 5 is a cross-sectional view in which an opening is formed by removing a sleeve mold.
FIG. 6 is a sectional view in which a drain pipe is piped in the opening.
FIGS. 7A and 7B are cross-sectional views showing a conventional method for constructing an opening for equipment piping. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,14 Sleeve form frame 2 Top cover 3 Outer cylinder 4 Bottom plate 5 Inner cylinder 6 Protrusion 7 Level adjustment groove 8 Vertical groove 9 Horizontal groove 10 Sealing material 11 鍔 12 Recess 13 Mounting hole 15 Fixing bolt 16 Fixing plate 17 Nail 18, 30 Slab type Frame 20 Concrete 21, 31 Opening 22 Insertion groove 23 Grain piece 24, 32 Lid 25 Drain pipe 26 Heat insulating material 27 Mortar 28 Gum tape 29 Cylindrical body

Claims (4)

An inner cylinder having a bottom plate is rotatably inserted into an outer cylinder having a top cover, a protrusion on the outer surface of the inner cylinder is inserted into a level adjustment groove on the inner surface of the outer cylinder, and the level adjustment groove extends to the lower end of the inner cylinder. A sleeve mold comprising a groove and lateral grooves provided alternately on both sides of the vertical groove. The sleeve mold according to claim 1, wherein a sealing material is provided at a lower portion of the outer cylinder. The sleeve mold according to claim 1, wherein a fixing bolt is attached to the bottom plate of the inner cylinder, and a recess is provided in the bottom plate so that a fixing plate below the fixing bolt is accommodated. After the outer cylinder of the sleeve mold of claim 1 is pulled out from the inner cylinder and fixed to the slab mold with fixing bolts, the outer cylinder is put on the inner cylinder fixed with the fixing bolts and adjusted to a predetermined length. A method for constructing an opening for equipment piping, wherein concrete is placed in the slab formwork.

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