JPS6029499Y2 - Pipe fixture for drain pipe construction - Google Patents

Description

[Detailed description of the invention] This invention is used for burying drainage pipes when constructing concrete retaining walls. A pipe fixing device for constructing a drainage pipe, which has a protruding pipe fitting part and a connecting fitting having a connecting threaded hole on the pipe fitting part side and a fixing screw part protruding from the base part side. Regarding.

Conventionally, when burying a drainage pipe in a concrete retaining wall, an ice removal pipe was placed between a formwork with a concrete pouring width, a wire was passed through the drainage pipe, and both ends of the wire were inserted into the formwork. The construction method used was to fix the formwork, pour concrete between the formworks, bury the drain pipe, and then expose the open end to the wall after the formwork was removed.

Therefore, during concrete pouring work, the drainage pipe moves freely within the range of the pipe diameter, making the dimensions and accuracy unstable. There were cases where the water flowed between the end opening of the drainage pipe and the formwork, blocking the pipe end or burying the pipe end.

For this reason, there was a drawback that after construction was completed, work such as searching for buried pipe ends, removing concrete parts, and repair work was required.

In particular, concrete retaining walls are often constructed in the form of a slope.
Since there were various slopes, we also had to cut the end of the drain pipe diagonally each time.

The present invention fundamentally improves the conventional drain pipe burying method and provides a pipe fixture for drain pipe construction that can significantly improve dimensions, accuracy, and work efficiency.

Figures 1, 2, and 3 show an embodiment of the present invention, in which a cylindrical pipe fitting part 2 having a smaller cross section than that face is protruded on the narrow side of a truncated cone-shaped pedestal part 1. At the same time, a connecting fitting 3 is fitted through the pipe fitting part 2 and the base part 1 in the center thereof.

This connecting fitting 3 has a connecting screw hole 4 at one end, a fixing screw part 5 at the other end, the screw hole 4 is exposed on the pipe fitting part 2 side, and the screw hole 4 is screwed on the base part 1 side. The part 5 is made to protrude.

The base portion 1 and the fitting portion 2 are configured to have an appropriate cross-sectional shape such as circular, square, or polygonal depending on the pipe to be used, and are appropriately provided with a reinforcing portion 6 as required.

The pipe fitting part 2 may be tapered as shown by the dotted line in FIG. 1 to facilitate fitting of the drain pipe, and may also be used commonly for various pipe diameters.

It is well known that the slope of a concrete retaining wall increases depending on its height.

FIGS. 4, 5, and 6 show examples of slope pipe fixtures used when constructing retaining walls with slopes.

That is, a predetermined slope θ is provided on the wide surface side of the base portion 1, and the slope θ is set so that this surface properly contacts the mold surface.

An example of the use of the present invention will be explained with reference to FIG.

The fixing screw part 5 is passed through the vertically provided formwork 8 and is tightened with the fixing nut 10 to fix the pipe fixing device according to the present invention, and the end of the connecting rod 9 is screwed into the connecting screw hole 4. wear.

Next, the drain pipe 7 is inserted into the connecting rod 9, one end of which is fitted into the pipe fitting part 2, and the other end of the drain pipe 7 is connected to a separate pipe, for example, of a slope pipe fixture. Fitting part 2
The other end of the connecting rod 9 is screwed into the connecting screw hole 4 to connect it.

Thereafter, the fixing screw portion 5 is passed through an opposing mold, for example, an inclined mold 8, and tightened with a fixing nut 10, and the dimensions or inclination between the molds 8 are accurately determined and fixed.

Therefore, the end of the drain pipe 7 is removably fitted into the pipe fitting part 2 and is in close contact with the pipe fitting part 2, and the wide side of the base part 1 is in close contact with the formwork 8, so that the drain pipe 7 is fixed. The concrete 11 can be poured between the formworks 8, and the original predetermined position and slope can be maintained without the concrete 11 flowing into the drain pipe 7 or the end of the drain pipe 7 being buried in the concrete 11. The drain pipe 7 can be installed through the water while maintaining the water drain pipe 7.

After the concrete 11 has hardened, the fixing nut 10 is removed, the formwork 8 is removed, and the pipe fixing device of the present invention is removed while turning, and it can be easily removed together with the connecting rod 9, improving construction efficiency. .

Furthermore, the corners of the concrete 11 that are in contact with the open end of the drain pipe 7 are rounded by the inclined surface of the platform 1, which has the effect of improving strength and aesthetics.

[Brief explanation of drawings]

Fig. 1 is a front view of the first embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a vertical sectional view thereof, Fig. 4 is a front view of another embodiment, Fig. 5 is a plan view thereof, FIG. 6 is a longitudinal sectional view thereof, and FIG. 7 is a longitudinal sectional view showing the state of use of the present invention. In the figure, 1 is a base part, 2 is a pipe fitting part, 3 is a connecting fitting, 4
5 is a connecting screw hole, 5 is a fixing screw part, 6 is a reinforcing part, 7 is a drain pipe, 8 is a formwork, 9 is a connecting rod, 10 is a fixing nut, and 11 is concrete.

Claims (1)

[Scope of utility model registration request] A pipe fitting part 2 having a smaller cross section is provided on the narrow side of the truncated pyramid-shaped pedestal part 1, and a connecting screw hole 4 is provided on the pipe fitting part 2 side. A pipe fixture for constructing a drain pipe, which is formed by fitting a connecting fitting 3 with a protruding screw part 5 for fixing.