JPS629416Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a support pillow for a pipe, especially for a buried pipe,
More specifically, it relates to a pillow for supporting a tube that is configured to be securely attached to the tube.

In recent years, highly flexible synthetic resin pipe bodies (hereinafter simply referred to as pipes) have been widely used for sewer pipes in residential areas newly developed. The joints of these pipes must be designed to maintain good watertightness over a long period of time while allowing for slight bending and expansion/contraction of the pipes. It is a method. By the way, when installing these pipes underground, there is a buried piping method in which the pipes are lowered one by one into an excavated pipe hole and connected while being placed on pipe support pillows that have been placed in the pipe hole in advance. is commonly practiced. FIG. 1 is a perspective view showing a buried pipe line formed by such a piping method, in which a pipe support pillow 3 is arranged on the lower surface of a pipe 1 that is piped in an excavated trench 2. The support pillow 3 is generally formed from raw pine logs using a raw pine log, etc., and is placed on excavated ground with a foundation made of cut crushed stone. On the other hand, excavation trench 2 is only excavated to the extent that the pipes that have been lowered down are simply joined together.
Before the pipe is lowered, there is plenty of room to carry out various tasks, but once the pipe is lowered, the work area suddenly becomes smaller. Therefore, even if the pillow 3 is displaced or falls over during piping work, the worker is often unable to even crawl into the gap between the pipe 1 and the excavated groove 2 to repair it.
Therefore, at this type of piping site, the pillows are joined together in advance in the form of a ladder, or a separate foundation is constructed to secure the pillows to prevent them from shifting or falling over. However, the drawback is that piping costs are extremely high.

The present invention was developed as a result of various studies focusing on the above-mentioned circumstances, and is intended to provide a new pillow for supporting pipe bodies that can significantly improve the workability of buried pipes.

That is, the pillow of the present invention is composed of an arcuate support section along the lower surface of the tube body, and a band section integrally formed with the support section, and the band section allows the tube body to be attached to the arcuate support section. The gist of this is that it is structured in such a way that it can be hugged.

The configuration and effects of the present invention will be explained below based on the drawings, but the following embodiment is only one specific example.
As long as the invention is carried out in accordance with the spirit described above and below, even if the shape of the tube support pillow or the mechanism of the fixing device is changed, these are all included within the technical scope of the present invention.

FIGS. 2 and 3 illustrate a first embodiment of the present invention, with FIG. 2 being a front view and FIG. 3 being a side view of FIG. 2 viewed from the right side. That is, the support pillow 3 is composed of an arcuate support part 4 having a support surface 6 along the lower outer peripheral surface of the pipe, and a band part 5 integrally formed with one end of the support part 4. These are made of a soft synthetic resin material such as polyethylene so as to follow the external shape of the pipe and adhere closely. A hooking piece 8 is formed at the other end of the band portion 5 and is attached to a fixing portion 9 formed at the other end of the support portion 4. Engage the protrusion 8 into the engagement hole 9a. In this way, the band portion 5 is fixed so as to hug the pipe 1 from the upper peripheral surface side, so that the support portion 4 can be firmly attached to the lower outer peripheral surface of the pipe, as shown in FIG. In addition, since the support pillow 3 of the present invention is made of a soft synthetic resin material with appropriate flexibility as described above, even if the diameter of the pipe changes slightly, the band portion 5 will be able to maintain its shape along the respective curvature.
can be wrapped. At this time, although the winding length of the band portion 5 changes somewhat, the hooking piece 8 may be formed to have a sufficient length and the connection position with the fixing portion 9 may be adjusted. In addition, since the support part 4 also has flexibility,
Even if the curvature of the pipe changes as described above, the supporting surface 6
is slightly deformed to follow the outer peripheral surface of the pipe, and the pipe can be supported over the entire support surface 6. Furthermore, as shown in FIGS. 4 and 5, the structure of the fixing part 9 and the hooking piece 8 is such that a check-shaped protrusion 9b is formed on the side of the fixing part 9, and a hooking hole 8a is formed in the hooking piece 8. However, the projection 9b may be press-fitted into the fixing hole 8a to connect the two.

In this way, the integrity of the support pillow 3 and the pipe 1 is much better than that of conventional ones, so when installing underground piping using the support pillow 3 of the present invention, the following construction method is recommended. is applicable. First, as shown by the chain line 1' in FIG.
Next, the support pillow 3 of the present invention is attached to the appropriate place on the lower surface of each pipe as described above, and the pipes are connected first on the ground, or the already connected pipes are connected in parallel with the connection work as shown in FIG. A wire 10 is wound around the outer circumferential surface of the pipe at the very end of the pipe 1 and adjacent to it, or further in the vicinity thereof, and these are lifted with a crane or the like and lowered into the excavation groove 2 in order from the end side, and excavated. Adjacent pipes 1 are further lowered one after another while being positioned in order from the pipe descended into the groove 2. Although the connecting portions of the pipe 1 are slightly bent during lifting and lowering by a crane or the like, there is no problem at all since these connecting portions are provided with flexibility as described above. In addition, in the method of connecting the pipes one by one into the excavated trench using a self-propelled pipe connecting machine that runs above the excavated trench, or in the burying method that uses a device in which the pipe connecting machine has a trench excavation function, etc. Pillows are even more useful.

In this way, with the present invention, the supporting pillow can be attached to the outer peripheral surface of the pipe 1 in advance, so there is no need to align the supporting pillow 3 after entering the excavated trench 2, and the underground piping can be reliably installed. can.

8 and 9 are front views showing other embodiments of the present invention, both of which show a support pillow 3 applied to a sewer pipe 11 having an oval cross section. The support pillow 3 shown in FIG. 8 is formed by dividing the support surface 6 along the circumferential direction, and is configured to support the lower surface of the pipe 11 at multiple points. Therefore, even if the diameter or cross-sectional shape of the pipe changes as shown by the imaginary line, the support surface 6 can be expanded along the outer surface of the pipe (on the contrary, it can be narrowed when the diameter becomes smaller). Its scope of application is extremely wide. Also, Fig. 9 shows the band portion 5.
In this embodiment, the belt is divided into two parts, one end of each is attached to the support part 4 side, and each band part 5 is connected above the pipe 11. As described above, the present invention can be applied to oval pipes that have a difficult position, and therefore have a particularly high utility value as a support pillow that also has a fall prevention function.

Since the present invention is configured as described above, the following effects can be obtained.

Since the integrity of the pipe and the support pillow is extremely high, there is no possibility that the support pillow will shift or fall during piping work.

Even if the support pillow is installed in advance in an area with a good working environment and then moved, it will not fall off the pipe, resulting in good work efficiency.

Even if the diameter of the pipe changes slightly, it can be applied accordingly.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the conventional buried piping state, Fig. 2 is a front view showing the support pillow of the present invention, Fig. 3 is a side view of Fig. 2, and Fig. 4 is another embodiment of the present invention. , Fig. 5 is a sectional view taken along the line - - of Fig. 4, Fig. 6 is a perspective view showing the support pillow of the present invention attached to a pipe, Fig. 7 is a perspective view illustrating the buried piping method, and Figs. 8 and 9. The figure is a front view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Pipe, 2... Excavation groove, 3... Pillow for supporting pipe body, 4... Supporting part, 5... Band part, 6... Supporting surface, 8... Hooking piece, 9... Fixing part.

Claims (1)

[Scope of utility model registration request] A pillow that supports a pipe body that is installed in a buried pipe, and is composed of an arc-shaped support part along the lower surface of the pipe body, and a band part formed integrally with the support part,
A pillow for supporting a tube body, characterized in that the band portion allows the tube body to be hugged by the support portion.