JP3045551U - Filling formwork device - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the mounting part is wet or the diameter of the piping varies, it can be fixed securely. A plurality of arc-shaped pieces 11 attached and opened and closed to surround and remove the outer circumference of piping.
The annular tightening band 10 is formed by providing the tightening members 14 at both ends thereof. When the tightening band 10 is fixed to the pipes, each arc-shaped piece 11 is provided with a form plate 20 which is in an unfolded state and whose ends 19 overlap with each other and closes between the pipes and the opening.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a form-filling formwork device for preventing leakage of a material filled between pipes passed through an opening and the opening.

[0002]

[Prior art]

 For example, to fill gaps after piping in a penetrating part of a concrete floor, a conventional method is to apply a plate-like material that has an opening shape surrounding the piping to form a formwork and fill with cement mortar. I came. However, since the plate material is attached by bonding, there is a problem that it cannot be adhered to a wet surface, and there is a disadvantage that if the amount of mortar is large, the material is dropped by a load.

A device that can be used repeatedly is known from Japanese Utility Model Laid-Open No. 64-12862. However, since the same type has a structure in which a disc-shaped formwork is divided into two parts and abutted, it is necessary to fix two parts with two screws, and the external shape (diameter) of the pipes tends to be different. On the other hand, the above-mentioned butt structure can respond only to a predetermined fixed dimension, and causes a problem that the mortar is easily wetted.

[0004]

[Problems to be solved by the invention]

 The present invention has been made in view of the above points, and a problem thereof is to ensure that even if the mounting portion is wet or the outer shape of the piping has a variation or difference, it can be securely fixed. .

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is to substantially surround the outer periphery of piping and to openably and closably connect a plurality of arc-shaped pieces for removal therefrom, and to provide a clamp at each end of the joined arc-shaped pieces. To form an annular tightening band that can be fixed by tightening the outer circumference of the piping, and when the tightening band is fixed to the piping, it will be in the deployed state, the ends will overlap each other, and the piping and the opening Is provided on each arc-shaped piece.

[0006]

[Embodiment of the invention]

 The hole-filling formwork device A according to the present invention prevents leakage of a material to be filled to fill a gap (hole) R between the piping P passed through the opening O and the opening O. The opening O is formed in a concrete floor or wall or other slab S or the like, and the piping P extending through the slab S or the like is passed through (see FIG. 4).

The apparatus A has a tightening band 10 as a means for attaching to the piping P. The tightening band 10 has a configuration in which a plurality of arc-shaped pieces 11 are connected so as to substantially surround the outer periphery of the piping P and to be opened and closed so as to be detached from the outer periphery of the piping P. In the illustrated example, several arc-shaped pieces 11 are axially connected at their ends to form an annular or short cylindrical band. Reference numeral 12 denotes a coupling shaft, and 13 denotes a bearing.

[0008] Fasteners 14 are provided at both ends of the joined body of the several arcuate pieces 11 connected, thereby forming an annular or tubular fastening band 10 capable of fastening the outer periphery of the pipes P. The tightening member 14 is a means for firmly fixing the tightening band 10 to the piping P which tends to have an irregular outer diameter, and can absorb a difference (difference length) of the outer shape (outer peripheral length) of the piping P. Use a device with a proper configuration.

The illustrated one has a bolt 15 for absorbing the difference length, and a locking piece 17 for hooking the nut 16. The bolt 15 is provided at one end of the above-mentioned combined body, and the locking piece 17 is provided at the other end. Provided. The nut 16 may be a general one or a wing nut. The hanging piece 17 has a through hole 17a through which the bolt 15 passes. The bolt 15 has a base bent toward the contents, and is rotatably supported at one end of the combined body of the arc-shaped pieces 11 by a shaft 18 provided on the base.

[0010] When the tightening band 10 is fixed to the pipes P, the form plate 20 is opened so that the ends 19 overlap each other, and the pipes P and the gap R are closed. Provided on each arc-shaped piece 11. When the lone piece 11 is composed of three pieces as shown in the figure, the number of the form plates 20 is also three. Therefore, the form plate 20 covering the annular gap R must be a sector having an angle of 120 degrees or more. Is required. See FIG. The overlapping end 19 is set larger at the bolt connection.

The form plate 20 needs to be integral with the arcuate piece 11, but the specific structure is a matter that can be appropriately selected. For example, it is a matter of course that the form plate 20 and the lone piece 11 can be manufactured as an integrated product by press working, and a small connecting piece 21 is provided on the lone piece 11 as shown in FIG. It is also possible to fix and integrally form a mold plate 20 made of steel. Reference numeral 22 in FIG. 2 denotes a central space, through which piping P passes. In the present apparatus A, an adjustment amount as long as the length L is obtained depending on the degree of tightening of the nut 16.

Therefore, when filling holes using the device A of the present invention, the tightening band 10 is opened, fitted to piping, and the nut 16 is screwed into the bolt 15 while the form plate 20 is in surface contact with the slab or the like S. , And fixed to piping P. The cement mortar C is filled in the gap R thus surrounded, as shown in FIG. If a mold release agent is applied to the surface of the mold plate 20 that is in contact with the cement mortar C for repeated use, the device A of the present invention can be easily removed and there is no risk of damage.

[0013]

[Effect of the invention]

 Since the present invention is constructed and operates as described above, a secure fixing force can be obtained even when the mounting surface is wet or there is a difference in the outer shape of the piping, and the mortar can be obtained regardless of the filling amount. The bolts and nuts can be securely stopped, and there is no danger of falling off due to the weight of the mortar.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of an embodiment of a filling mold apparatus according to the present invention in an open state.

FIG. 2 is a partially broken plan view of the same closed state.

FIG. 3 is a side view of the same.

FIG. 4 is a longitudinal sectional view of the same use state.

Claims (3)

[Utility model registration claims] 1. A formwork device for preventing leakage of material filled between pipes passed through an opening and the opening, the mold apparatus substantially surrounding an outer periphery of the pipes and a plurality of pipes for taking out from the pipes. Opening and closing the arc-shaped pieces of the above-mentioned arc-shaped pieces, and providing a tightener at both ends of the connected arc-shaped pieces to form an annular tightening band that can tighten and fix the outer periphery of the piping, and fix the tightening band to the pipes A mold filling device wherein each of the arc-shaped pieces is provided with a mold plate which is in an unfolded state, ends thereof overlap each other, and closes between the piping and the opening. 2. The tightener has a bolt for absorbing a difference in length.
2. A mold filling device according to claim 1, further comprising a hook piece for hooking the nut, wherein a bolt is provided at one end of the combined body and a hook piece is provided at the other end. 3. A structure in which each of the arc-shaped pieces is provided with a form plate which is in an unfolded state when the tightening band is fixed to the pipes, ends thereof overlap each other, and closes the pipes and the gap. The filling mold apparatus according to claim 1.