JPS59217845A - Lid structure of fence - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cover structure for a fence culvert, which is used when an electric paulownia pipe, a gas pipe, or a water pipe crosses a fence culvert.

Previously, after burying a fence culvert, if gas pipes, water pipes, etc. were to be buried perpendicular to this 41N1 prefecture, it was necessary to bypass and bury it under the fence culvert. This makes the construction work troublesome and requires a lot of labor.

Therefore, as shown in Japanese Utility Model Publication No. 54-20851, a pipe is buried in the cover of the fence culvert, each end of the pipe is bent downward, and a gas pipe and a water pipe are connected to the end of the pipe. The pipe connected and buried in the lid body is used as a kind of pipe joint.
It was devised to use C.

However, the problem with this method is that when a large load is applied to the lid, the buried pipe deforms.

If damaged, gas may leak from the pipe, especially in gas pipes, and there is a risk of an explosion if it comes into contact with an external spark. Also, even if a metal tube with superior strength is used, it will deform due to the load from the top.

Breakage is unavoidable, and there is also the disadvantage that corrosion progresses due to moisture penetrating the lid (which is mainly a concrete block), reducing its durability.

The present invention was made based on the above-mentioned circumstances, and by embedding a sheath pipe in the lid body and passing an electric wire pipe, gas pipe, or water pipe (hereinafter referred to as a gas pipe) through the sheath pipe, The load applied to the pipe is received by the sheath pipe, so that the load is not applied to the internal gas pipe.In addition, the sheath pipe is equipped with elbow protection parts located on both sides of the fence culvert. To provide a lid structure for a fence culvert which prevents a load from being applied even if the exiting gas pipe falls down through an elbow part.

Hereinafter, one embodiment of the present invention will be explained in detail with reference to FIGS. 1 to 5.

In the figure, -C and reference numeral 1 are fence culverts having a ( )-shaped cross section, and are made of, for example, -J concrete blocks. The lid body 2 that is placed over the fence and the ditch 1 has a straight sheath pipe 3.
is buried during molding. In the first embodiment, the lower side of the sheath tube 3 is removed by a, leaving the upper side, and this one portion 3a extends below the lid end 2a. A reinforcing bar 4 is placed on the lower side of the sheath tube 3 so as to intersect with the reinforcing bar 4. [! It is set up. As shown in FIG. 5, the lid body 2 is provided with holes 2b on both sides thereof, through which anchor bolts 6 screwed into jet anchors 5 embedded in the side wall 1a of the fence culvert 1 are inserted.
Insert 1 is buried there. A counterbore hole 20 is formed at the top of the hole 2b, in which:
Nut 9 is attached to anchor pole 1-6 through washer 8.
are screwed together, and a gasket 10 such as an epoxy-impregnated body is pressed between the lid body 2 and the top of the side wall 1a of the fence culvert 1 to connect and fix the two.

The lid body 2 integrally forms a curb portion 2d that separates the sidewalk and the roadway on the lid end portion 2a. Further, the other portion 3b of the sheath tube 3 protrudes from one side of the lid body 2, and itself functions as a protector for the sheath tube. In addition, the fence culvert 1 has its side wall 1
A notch 11 for piping is formed on the lower side of the lid end 2a at the upper edge of a, thereby securing the necessary space for piping.

In the above configuration, a supply pipe 12 for gas transport is inserted into the sheath pipe 3. In order to maintain liquid tightness between the sheath pipe 3 and the supply pipe 12 and to support the supply pipe 12,
O-rings 14 are interposed near the end of the supply pipe 12 and at a predetermined distance from the end, so that both O-rings 14 are inserted roughly.
A synthetic resin having flexibility and elasticity, such as epoxy resin mortar, is filled between the rings. Then, an elbow 15 is attached to the supply pipe 12 that protrudes below the lid end 2a, and gas pipes 16 and 17 are vertically lowered on both sides of a+i through the rib 15. .

In addition, the elbow 15, the supply pipe 12 and the gas pipe 16°1
1 (a method as shown in Fig. 8 is adopted. Here, a wide opening 1:ia is formed at both ends of the 1-rubo 15, and a screw 15b is formed inside the wide opening 1:ia. Insert the pipe into the texture 15 until one end of the supply pipe 12 etc. comes into contact with the stopper 15 (j) protruding inside.At this time, the backing 20 and springs 21 and 22 are inserted, and the
Narrow 1-24 is screwed into the inside of wide mouth part 15a of elbow 15 via ring 23 and compresses leaf spring 21.22, so that the pipe is gripped and fixed by spring 21.22 and backing 20. be.

In such a configuration, even if a load is applied to the lid body 2, this load will be absorbed by the sheath pipe 3, and this sheath pipe 3 is not directly connected to the gas pipe. In combination with the reinforcing bars 4 which can be made to have a necessary and sufficient thickness and are set in a numbered manner so as to intersect with each other, the lid body 2 can be maintained with sufficient strength. Moreover, since no load is applied to the supply pipe 12 without passing through the sheath pipe 3, there is no risk of the supply pipe 12 being damaged or deformed. Moreover, since it is protected by the sheath tube 3 and sealed by the O-ring 14 as in the embodiment, it has a corrosion-resistant structure and can ensure durability. Under the parts 3a and 31) of the sheath pipe 3, a texture 15 is attached to block the load on this part and form a protective part, so that it is possible to avoid applying the load to the piping part. .

In the embodiment shown in FIG. 6, the portion 38 of the sheath tube 3 does not extend below the lid end 2a of the lid 2.
(2) The grain 15 is supported by filling the lower space of the lid end 2a with epoxy resin mortar or an elastic body 13a, and is integrated with the lid 2.

In this case, epoxy resin or elastic mortar 13a
The O-ring 14 is not provided on the filling side of the epoxy resin or elastic mortar 13a, and the O-ring 14 is stepped only on the other end. Between each O-ring, one boxy resin or It may be filled with mortar 13 made of elastic material.

Further, in the embodiment shown in FIG. 7, a semi-split sheath pipe 19 made of a slightly larger diameter iron plate is welded to the tip of the sheath pipe 3 via a reinforcing bar 18, and the half-split sheath pipe 19 is made of a steel plate. 15 is protected.

In the above embodiments, the elbow protector is installed on both sides, and the elbow protector is installed on one side. However, it is of course possible to select and use the elbow protector as appropriate depending on the actual situation. be.

As described in detail above, the present invention covers a U-shaped cross-section fence culvert formed in the lower drainage outflow groove, a sheath pipe is buried in the lid body, and an electric paulownia pipe is installed in the sheath pipe. .

When a gas pipe or water pipe is installed, a protrusion opening downward is formed at the end of the sheath pipe, and a liquid-tight member is installed at the end of the earth distribution pipe, gas pipe, or water pipe. The lid body is supported within the sheath pipe via the liquid-tight member, and is constructed so that the load on the lid body does not act on the electrical conductor pipe, gas pipe, or water pipe, so even if a load is applied to the attached body, Since the sheath pipe receives this and no load acts on the gas pipe inserted inside, there is no deformation or breakage (43Ω), and the elbow protection filter can be protected against loads from above. This effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention? l [Cross-sectional side view, Fig. 2 is a partially enlarged longitudinal side view, ff! Figure 3 is a perspective view of the main parts.
Fig. 4 is a plan view of the same, Fig. 5 is a longitudinal sectional view of the anchor bolt installation position, and Fig. 6 is a partially enlarged view of another embodiment. 1 is a sectional side view, FIG. 7 is a perspective view of a main part of still another embodiment, and FIG. 8 is a sectional view showing the elbow in a different state. 1... Fence culvert, 1a... Side wall, 2... Lid body, 2a.
... Lid end, 2b... hole, 2C... counterbore hole, 2
d...Curb portion, 3...Sheath pipe, 3a, 3b...Part, 4...Reinforcement bar, 5...Jet anchor, 6...
・Anchor bolt, 1... insert, 8... washer, 9... nut, 10... gasket, 11.
...Notch, 12... Supply pipe, 13... Epoxy resin or elastic mortar, 14... O-ring, 15...
...Elbow, 15a...wide mouth part, 15b...screw,
15c...Stopper, 10.17...Gas piping, 1
8...Reinforcement bar, 19...Half sheath tube, 20...Backing, 21, 22...1111 spring, 23...O ring, 24...Nut. Patent attorney Susumu Murai

Claims (1)

[Claims] A lid body is placed over the U-shaped cross-section fence culvert formed in the lower drainage outflow groove, a sheath pipe is buried in the lid body, and an electric grid pipe is placed in the sheath pipe.
In the case where gas pipes or water pipes are installed, the above M
A protrusion opening downward is formed at the end of the pipe, and a liquid-tight member is provided at the end of the electric pipe, gas pipe, or water pipe, and the electric paulownia whistle, gas pipe, or water pipe is placed in the sheath pipe. is supported through the liquid-tight member, and the load on the lid body is applied to the container tube. A cover structure for a fence culvert characterized by not acting on gas pipes or water pipes.