JPH0352918Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention relates to a formwork device for concrete wrapping around a laying pipe, which is used for placing rolled concrete onto a laying pipe such as a humid pipe.

<Prior Art> Conventionally, the type shown in FIG. 4 has been known as a formwork device for laying pipe-wrapped concrete. This formwork device for laying pipe-wrapped concrete has a plate-shaped formwork 3 erected on both sides of a humid pipe 2 placed on an installation pillow 1 on a chestnut stone S, and outside of this formwork 3. A crosspiece 6 is fixed to the ground E, and the crosspiece 6 is supported diagonally by a plurality of struts 5 fixed to the ground E.

<Problems to be Solved by the Invention> However, in the above-mentioned conventional formwork device for laying pipe-wrapped concrete, in order to keep the distance between the plate-shaped formworks 3, 3 on both sides of the humid pipe 2 constant, It is necessary to measure the distance between the formworks 3, 3 and position the formworks 3, 3, which is troublesome. Furthermore, since it is necessary to use the crosspieces 6 and a plurality of struts 5 to support the plate-shaped formwork 3, the process for assembling and disassembling the formwork 3 becomes complicated, time-consuming, and inefficient. It was spot on. Furthermore, since concrete is poured through a narrow gap between the humid pipe 2 and the forms 3, 3, the chute must be positioned accurately, resulting in the problem that it takes time to pour concrete.

Therefore, an object of this invention is to provide a formwork device for laying pipe-wrapped concrete that can be easily and quickly assembled and disassembled, and has good workability and can cast concrete easily and quickly.

<Means for Solving the Problems> In order to achieve the above object, the concrete forming device for laying pipes of this invention is arranged on both sides of the laying pipe, and has bent ends bent diagonally upward. A bending formwork having a dogleg-shaped cross section and having a hole penetrating vertically through the bending part, and a columnar part on both sides inserted into the hole in the bending part of the bending formwork on both sides of the laying pipe body. It is characterized by consisting of a gate-shaped stake that is inserted through and fixes the bent formwork.

<Function> If bent formwork is placed on both sides of the laying pipe body, and the columns of the gate-shaped piles are inserted into the holes of the bent parts of both bent formworks and driven into the ground, the gate-shaped piles The distance between both refracting forms is set constant by the beam part, and at the same time, the refractive forms are fixed. Furthermore, when the gate-shaped pile is pulled out, the bent forms on both sides of the laying tube are removed at once. In addition, when pouring the rolled concrete of the laying pipe into the above-mentioned bent formwork, the bent part bent upward acts as a chute, and the concrete falls downward along the upper surface of this bent part. , is quickly and easily cast inside the vertical section.

<Example> Hereinafter, the present invention will be explained in detail with reference to the illustrated example.

In Figs. 1 and 2, numeral 2 denotes a humid pipe as an example of a laying pipe placed on the installation pillow 1 shown in Fig. 3 on Kuriteki S, and numerals 10 and 10 are arranged on both sides of the humid pipe 2. , is a refraction formwork having a dogleg shape in cross section and consisting of a refraction part 10a whose tip is bent diagonally upward and a vertical part 10b, and the refraction part 10a near the vertical part 10b has a plurality of vertically penetrating parts. Round holes 11, 11, 11 are provided along the axial direction of the hume tube 2 at predetermined intervals. A side angle 16 having a hole 17 at a position corresponding to the round hole 11 is fixed to the lower end of the vertical portion 10b.

12 is two mutually parallel pillar parts 12a, 12a
This is a gate-shaped pile consisting of a beam portion 12b and braces 15, 15. The column part 1 of this gate-shaped pile 12
2a, 12a are inserted vertically downward into the pair of round holes 11, 11 of the bending parts 10a, 10a of the double bending formworks 10, 10, and then the side angle 16 is fixed to the lower end of the vertical part 10b. , 16 round holes 1
7 and 17 and driven into the ground E to fix the bending forms 10 and 10 on both sides of the hume pipe 2.

In this way, this formwork for rolled concrete uses gate-shaped piles 12 to fix the bending formwork 10, so
The distance between the bending formworks 10, 10 is naturally determined by the length of the beam part 12b of the gate-shaped pile 12, and there is no need to measure the distance between the formworks one by one as in the past. efficiency can be achieved.

Moreover, this formwork for rolled concrete has both column parts 12a, 12a at both ends of the beam part 12b of the gate-shaped pile 12.
is fixed, so there is no need for a separate strut like in the past. The bending formwork 10 can be assembled by simply inserting the column part 12a of the gate-shaped pile 12 into the round hole 11 of the bending part 10a and driving it into the ground.
Similarly, by simply pulling out the gate-shaped pile 12, the bending forms 10, 10 on both sides of the hump tube 2 can be removed at once, reducing the number of work steps. This speeds up the assembly and disassembly work of the formwork.

In addition, the rolled concrete 20 is placed in the bending formwork 1.
When concrete is poured between 0 and 10, the bent portions 10a and 10a bent diagonally upward serve as chute, so concrete can be poured easily and quickly.

In the above embodiment, since the brace 15 is attached to the gate-shaped pile 12, the column part 12a and the beam part 12b
can be strongly combined.

In addition, since the side angle 16 that passes through the column 12a is fixed to the lower end of the bending formwork 10, the bending formwork 10 can be fixed firmly and firmly. If they are continuous so as to connect between them, it is possible to prevent the lower end of the vertical portion 10b of the bending formwork 10 from expanding outward when the rolled concrete 20 is placed.

In addition, in the above embodiment, the hole of the bending part 10a was a round hole, but if it is made into a long hole in the axial direction of the hump tube 2, it will be easier to insert the gate-shaped pile 12 therein.
Moreover, when pulling out the pile 12, it can be swung in the direction of the elongated hole, making it easier to pull out the pile.

Further, in the above embodiment, the bending portion is continuous with the same length as the vertical portion, but it may be provided intermittently in the vertical portion.

<Effects of the invention> As is clear from the above explanation, the concrete formwork device for laying pipes of this invention is arranged on both sides of the laying pipe, and is perpendicular to the bending part whose tip is bent diagonally upward. A refraction formwork having a dogleg-shaped cross section and having a hole penetrating the refraction part in a vertical direction; and a refraction formwork on both sides of which the column parts are inserted into the holes in the refraction part of the refraction formwork on both sides of the laid pipe body. Since it consists of gate-shaped stakes that fix the bending forms, the distance between the bending forms is fixed by the gate-shaped stakes, and positioning can be easily performed. In addition, by simply driving the gate-shaped pile into the hole in the bent part of the bent formwork, the bent formwork can be fixed to both sides of the laid pipe body at once, and similarly, by simply pulling out the gate-shaped pile. Since the bending formwork can be removed at once, it is possible to streamline the work of assembling and removing the formwork. Furthermore, since the bent portion of the bent formwork serves as a chute, there is an advantage that concrete can be placed easily and quickly.

[Brief explanation of the drawing]

Figure 1 is a front view of one embodiment of this invention;
The drawings are a sectional view taken along the line -- in FIG. 1, FIG. 3 is a diagram illustrating the installation of the laying pipe, and FIG. 4 is a sectional view of a conventional example. 2... Huyum tube, 10... Refraction formwork, 11...
...Round hole, 12...Gate-shaped stake, 15...Brace, 1
6...Side angle, 17...hole, E...ground, S...kuristone.

Claims (1)

[Claims for Utility Model Registration] Disposed on both sides of the laying pipe, consisting of a bent part with its tip bent diagonally upward and a vertical part, with a dogleg-shaped cross section having a hole penetrating the bent part in the vertical direction A mold for concrete wrapped around a laying pipe, which is made up of a bending formwork, and gate-shaped piles for fixing the bending formwork by inserting pillars on both sides into holes in the bending parts of the bending formwork on both sides of the laying pipe body. frame device.