JPH0220307Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to pipes for use in propulsion construction methods.

Conventional configuration and its problems When installing large-diameter pipes such as sewer pipes with a diameter of 2000 mm or more using the propulsion method,
It is often requested that small diameter pipes such as power cable sheath pipes of about 100mm be installed together. At this time, if the large-diameter pipe and the small-diameter pipe are laid in separate processes, there is a problem that work efficiency is poor.

Purpose of the invention Therefore, the purpose of the present invention is to enable a large diameter pipe and a small diameter pipe to be propelled simultaneously.

Structure of the device In order to achieve the above object, the present invention has a socket and a socket on the outside of a large-diameter pipe for propulsion construction, which has a socket and a socket, and has a length equivalent to that of the large-diameter pipe. A small-diameter tube with a small-diameter tube is fixed parallel to the large-diameter tube with the end faces of the sockets of both tubes aligned, and the other large-diameter tube into which this socket is inserted is fixed on the outside of the socket of the large-diameter tube. A flange that can contact the end face of a socket of a diameter pipe and transmit thrust to this socket, and a flange that can contact the socket of a small diameter pipe fixed to the other large diameter pipe and transmit thrust to this socket. A thrust transmission member fixed to the flange is provided as possible.

Therefore, since the large-diameter pipe and the small-diameter pipe can be integrated and the thrust force can be transmitted to both pipes, it is possible to propel both pipes at the same time, and the work can be carried out efficiently.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, numeral 1 is a large diameter pipe such as a sewage pipe, with a diameter of about 2400 to 2600 mm. Further, 2 is a small diameter pipe such as a power cable sheath pipe, which has a diameter of about 80 mm, and is fixed to the outer surface of the large diameter pipe 1.

Fig. 2 shows the longitudinal cross-sectional structure of the pipe for the propulsion method according to the present invention, in which 1 is the aforementioned large diameter pipe, with a socket 3 formed at one end and an insertion port 4 formed at the other end. has been done. Further, a cement mortar lining 5 is formed on the inner surface of the tube, and an exterior concrete 7 containing reinforcing bars 6 is formed on the outer surface of the tube. Reference numeral 8 denotes a sealing portion between the tubes 1 to be joined to each other, a sealing material 9 and a compression device 10 for this sealing material 9.
and are arranged. On the other hand, on the outer surface of the socket 4, there is an end surface 1 of the socket 3 of another pipe 1 into which this socket 4 is inserted.
A flange 12 that can come into contact with the socket 1 is formed, and a propulsive force can be transmitted to the socket 3 through this flange 12. 13 is a rib, and 14 and 15 are bolts and nuts for fixing the flange 12 and the socket 3.

2 is the aforementioned small diameter pipe. This small diameter pipe 2 is formed to have the same length as the large diameter pipe 1, and has a structure in which a socket 16 and an insertion port 17 are formed at both ends, as shown in FIG. It's summery. 18 is a sealing material between the sockets and sockets. In addition, the small diameter pipe 2 uses a normal slip-on type pipe 19, and in order to eliminate resistance during propulsion, the collar 20 on the outer periphery of the socket 16 of this pipe 19 is removed by cutting, etc. The thickness of the flesh portion 21 is made equal to the thickness of the tube body portion 22. Note that when the power cable is passed through the small diameter pipe 2 as in this example, there is no need for cement mortar lining on the inner surface of the small diameter pipe 2 because there is no risk of corrosion.

A thrust transmission member 23 is attached to the flange 12 and is capable of transmitting thrust to the small diameter pipe 2 fixed to the other large diameter pipe 1. That is, as shown in FIGS. 2, 3, and 5, a thrust transmission plate 24 is welded to the outer surface of the flange 12.
A through hole 25 is formed in the tube axis direction, the diameter of which is smaller than the outer diameter of the socket 16 of the small diameter pipe 2, and larger than the outer diameter of the insertion port 17. 26 is a thrust transmission plate 24
A support plate 27 is welded to the lower part of the socket side rib 26, which is aligned with the height of the flange 12 and whose lower end surface is in contact with the outer surface of the socket 4. has been done. Reference numeral 28 denotes a pair of socket-side ribs, which are welded to the thrust transmission plate 24 so that their lower end surfaces abut against the outer surface of the socket 3 when the socket 3 and the insertion port 4 of the large-diameter pipe 1 are joined. ing.

A fixing member 30 for fixing the small diameter tube 2 is provided on the outer surface of the tube body 29 of the large diameter tube 1.
As shown in FIG. 6, this fixing member 30 is constructed of a pair of anchor bolts 31 that are welded to reinforcing bars 6 and buried in the exterior concrete 7, and a small diameter pipe by welding both ends to the anchor bolts 31. 2 to the large diameter pipe 1
and a distance piece 33 interposed in the gap between the small diameter pipe 2 and the large diameter pipe 1. Note that an appropriate number (usually about two) of fixing members 30 are provided in the tube axis direction.

In such a configuration, the small diameter pipe 2 is connected to the large diameter pipe 1.
, align the end face 34 of the socket 16 of the small diameter pipe 2 with the end face 11 of the socket 3 of the large diameter pipe 1, and insert the socket 17 into the through hole 25 of the thrust transmission plate 24. Then, using the fixing member 30, the small diameter pipe 2
is fixed parallel to the large diameter pipe 1.

In order to join the next pipe to the pipe for the propulsion method in this state, the sealing material 18 is deposited in the socket 3 of the small diameter pipe 2, and the sealing material 9 and the compression device 10 are placed on the inner surface of the socket 3 of the large diameter pipe 1. Then, install the pipe for the next propulsion method. As a result, the socket 16 of the small diameter pipe 2 and the socket 1
7 and the socket 3 and the socket 4 of the large diameter pipe 1 are joined to each other in a sealed state. The end surface 11 of the socket 3 of the large diameter pipe 1 is brought into contact with the flange 12, and the end surface 34 of the socket 16 of the small diameter pipe 2 is brought into contact with the thrust transmission plate 24. Flange 12 and socket 3
and are fixed to each other with bolts 14 and nuts 15.

When the tube is propelled, the thrust force is transmitted to the large diameter tube 1 via the rib 13 and flange 12, and is also transmitted to the small diameter tube 2 via the insertion side rib 26 and thrust transmission plate 24. Diameter pipe 1 and small diameter pipe 2
will be promoted at the same time. As a result, both pipes 1 and 2
It becomes possible to perform the installation work efficiently.

Effects of the Invention As described above, according to the present invention, the large-diameter pipe and the small-diameter pipe can be propelled at the same time, so that the pipe laying work can be carried out efficiently.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a cross-sectional view, FIG. 2 is a longitudinal sectional view, FIG. 3 is a plan view of the main part, FIG. 4 is a detailed view of a small diameter pipe, and FIG. is a sectional view taken in FIG. 2, and FIG. 6 is a sectional view taken in FIG. 2. 1...Large diameter pipe, 2...Small diameter pipe, 3...Socket, 4
... Socket, 11 ... End face, 12 ... Flange, 1
6... Socket, 17... Socket, 23... Thrust transmission member, 24... Thrust transmission plate, 25... Through hole, 26
... Inlet side rib, 30 ... Fixing member, 31 ... Anchor bolt, 32 ... Fastener, 33 ... Distance piece, 34 ... End surface.

Claims (1)

[Scope of Claim for Utility Model Registration] A small-diameter pipe having a length equal to that of the large-diameter pipe and having a socket and an inlet on the outside of a large-diameter pipe for the propulsion method that has a socket and an inlet. Fix the pipe parallel to the large-diameter pipe and with the end faces of the sockets of both pipes aligned, and place the socket of the other large-diameter pipe into which this socket is inserted outside the socket of the large-diameter pipe. a flange capable of contacting the end face of the pipe and transmitting thrust to the socket, and a flange contacting the socket of the small diameter pipe fixed to the other large diameter pipe and capable of transmitting thrust to the socket; A pipe for propulsion construction, comprising: a thrust transmission member fixed to the flange.