JPH0363609B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention provides a system for installing cable conduits, water pipes, gas pipes, sewer pipes, etc., in which the conduits are supported by carts in laid pipes. Concerning the propulsion piping construction method in which the piping is laid by pushing it in a shape.

(b) Prior art The applicant has filed Japanese Patent Application No. 58-234842
Publication No. 128811), Japanese Patent Application No. 1983-46341 (Japanese Patent Application No. 1983-
Publication No. 192186), Japanese Patent Application No. 46342 (1982)
Publication No. 192187), Japanese Patent Application No. 1984-46343 (Japanese Patent Application No. 1983-
192188), and others, a guide rail is laid above the laying pipe on which the cable is to be laid, and trolleys carrying the pipe are moved in a connected manner along the guide rail, and the cable is laid. We are proposing a conduit-laying trolley that lays conduits inside pipes.

(c) Problems to be solved by the invention By using the method proposed in this proposal, the pipeline can be laid into the pipe by sequentially pushing a cart carrying the pipe into the pipe from a vertical shaft. However, normally, the means for guiding the carriage such as a guide rail is directly attached to the laying pipe 1 while making appropriate adjustments depending on the installation state of the laying pipe 1. However, when the inner diameter of the laying pipe becomes smaller, for example, from 600 mmφ to 1000 mmφ, it becomes difficult to perform adjustment work depending on the installed state of the laying pipe due to space constraints, and it becomes difficult to install guide rails etc. on the laying pipe. Due to these inconveniences, there was a desire to develop a construction method that would make it easier to lay such rails.

In order to solve the above-mentioned drawbacks, the present invention enables the guide means to be installed in the pipe regardless of the installation state of the pipe, that is, without making any adjustment to the pipe. Therefore, it is an object of the present invention to provide a propulsion piping construction method that allows the installation of guide means to be carried out easily and quickly even when the inner diameter of the pipe to be installed is reduced.

(d) Means for solving the problem That is, the present invention installs laying bands whose outer diameters are expandable and contractible at predetermined intervals inside a laying pipe where a conduit is to be laid, and then installs them at predetermined intervals. A running guide means of a trolley is mounted and installed on the installed running guide means, and the trolley carrying the pipe supporting the pipe is run along the installed running guide means, thereby laying the pipe into the pipe being laid. It is constructed in this way.

(e) Effect With the above-described configuration, the present invention, when installing a conduit in a laid pipe, installs laying bands at predetermined intervals, lays a guide means on the installed laying bands, and then installs a laying band on the installed laying band. The trolley on which the pipe is mounted is moved using guide means, and the pipe is laid.

(f) Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a sectional view showing a pipeline installation site to which an embodiment of the propulsion piping method according to the present invention is applied;
The figure is a side view of FIG. 1.

As shown in Figs. 1 and 2, the pipeline installation site has a pipe 1 with a circular cross section buried underground, and the pipe 1 is directed in the left-right direction in Fig. 2, that is, arrow A. , B direction. Laying bands 2 are provided on the inner surface 1a of the laying pipe 1 at approximately equal intervals in the laying direction of the laying pipe 1. 2a is provided. Laying band 2
has a ring 2b made of iron, and a non-slip ring 2c made of rubber is adhered to the outer periphery of the ring 2b, that is, the part that comes into contact with the inner surface 1a of the pipe. Further, brackets 2d, 2d are formed in the slit 2a portion of the ring 2b, and adjustment bolts 2e, which are threaded at both ends in opposite directions, are screwed between the brackets 2d, 2d.

Furthermore, below the ring 2b in FIG.
A guide rail 6 having a T-shaped cross section is provided between the rail stop plates 3 and 3 so as to be fixed to the guide rail 6 in the direction in which the installation pipe 1 is laid.
It is installed extending in the direction of arrows A and B in the figure. The opposite side of the rail stopper plates 3, 3, that is, the first side of the laying band 2
At the upper end of the figure, an angle guide 7 with an L-shaped cross section,
7 are attached over the entire length of the installation pipe 1 in the directions of arrows A and B with bolts 13, 13 facing each other.

On the other hand, a plate-shaped truck 10 supporting four pipes 9 is mounted on the guide rail 6 in the directions of arrows A and B along the guide rail 6 via wheels 10a rotatably attached to the lower end of the truck 10. A guide roller 10b is provided on the upper part of the cart 10.
is rotatably supported. A plurality of connecting rods 11 are provided between adjacent carts 10, 10 in the laying pipe 1 to connect the two carts 10 to each other, so that two carts 10 form a set. used in the form of Incidentally, the pipe lines 9 supported by the cart 10 are connected to each other at the intermediate portion of the carts 10, 10, as shown in FIG.

Incidentally, at the upper part of the installation pipe 1 in FIG. 1, a concrete injection pipe 12 for pouring concrete for clinching is installed.

Since the laying band 2 and the like have the above-described configuration, when laying the conduit 9 in the laying pipe 1, first carry the laying band 2 into the laying pipe 1 and install it as shown in Fig. 1. , the rail stopper plate 3 is positioned and fixed at the lower end of the installation pipe 1. To carry the installation band 2 into the installation pipe 1, rotate and adjust the adjustment bolt 2e of the installation band 2, and then tighten the bracket 2.
The gap X between d and 2d is reduced to reduce the outer diameter of the ring 2b, and the ring 2b is transported in that state. Laying band 2
When the brackets are brought into a predetermined installation position within the installation pipe 1, the adjusting bolt 2e is rotated and adjusted again to widen the gap X between the brackets 2d. Then, the outer diameter of the ring 2b expands, and the non-slip ring 2c on the outer periphery of the ring 2b is pressed against the inner surface 1a of the laying pipe with a predetermined pressing force, and the laying band 2 is firmly and securely fixed on the inner surface 1a of the laying pipe. be done.

In this way, the laying bands 2 are installed and fixed one after another in the laying pipe 1 at predetermined intervals as shown in FIG. Lay the guide rail 6. The installed guide rail 6 has bolts 5,
By fastening 5, the rail stopper plates 3, 3 reliably press and hold the ring 2b. Note that the guide rail 6 is installed to connect all the laying bands 2 in the laying pipe 1.

Once the guide rail 6 has been installed over the entire length of the installation pipe 1, angle guides 7, 7 are fastened and fixed to the upper end of the installation band 2 over the entire length of the installation pipe 1 using bolts 13, 13. In this way, when the angle guides 7, 7 are provided, the truck 10 supporting the pipe line 9 is moved around the wheels 10a of the truck 10.
As shown in FIG. 1, the guide rail 6 is engaged with the guide roller 10b, and the guide roller 10b is inserted into and engaged with the guide space 15 between the angle guides 7, 7 from a shaft portion (not shown). Figure 2: For example, push in the direction of arrow A. Then, trolley 10
The wheel 10a is guided by the guide rail 6, and the guide roller 10 is further guided by the guide space 15, and moves in the A direction together with the pipe line 9. The trolley 10 and the pipe line 9 are pushed into the laid pipe 1 in such a way that they are added one after another in the vertical shaft section, and finally, when the pipe line 9 is inserted over the entire length inside the laid pipe 1, the pipe line 9 The installation work has been completed. In addition, the trolley 10 that is currently laying the pipe is properly guided by guide means such as the guide rail 6 and the angle guide 7.
Since the trolley 10 is guided in a shape along the curve, the trolley 10 runs smoothly in the laying pipe 1 without swinging in the horizontal direction in Figure 1, and even if the laying pipe 1 is installed in a curved shape, no inconvenience occurs You can run without any problems.

In this way, when the pipe line 9 has been laid inside the laying pipe 1 together with the trolley 10, the concrete injection pipe 12
By pouring concrete into the pipe 1 and solidifying it, the conduit 9 is fixedly fixed in the pipe 1.

In addition, in the above-mentioned embodiment, a case has been described in which the guide rail 6 is laid under the laying band 2, and therefore the lower part of the laying pipe 1, and the cart 10 is configured to run on the guide rail 6. The installation position is not limited to the lower part of the laying pipe 1, but it is also possible to install it so that it is located at the upper part of the laying pipe 1, and to suspend the cart 10 from the guide rail 6 laid on the upper part. It is possible.

Further, in the above embodiment, the laying band 2 is formed from an integral ring 2b having one slit 2a, but as long as the outer diameter of the laying band 2 can be expanded and contracted, the ring 2b can be The ring 2b does not necessarily have to be integral; the ring 2b may be divided into a plurality of segments in the circumferential direction, and assembled into an annular shape when the installation band 2 is installed in the installation pipe 1. Of course.

(g) Effect of the Invention As explained above, according to the present invention, the laying band 2 whose outer diameter is expandable and contractible is placed at a predetermined interval within the laying pipe 1 in which the conduit 9 is to be laid. Then, the guide rail 6, the angle guide 7, and other traveling guide means of the trolley 10 are mounted and installed on the installed laying band 2, and the pipe 9 is mounted and supported along the installed traveling guide means. Since the conduit 9 is laid inside the laying pipe 1 by running the cart 10, the traveling guide means can be laid inside the laying pipe 1 regardless of the installation state of the laying pipe 1. That is, it is possible to perform any adjustment work on the laying band 2 without performing any adjustment work on the laying pipe 1, and even if the inner diameter of the laying pipe 1 becomes small, the work of laying the guide means can be done easily and quickly. I can do it.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a pipeline installation site to which an embodiment of the propulsion piping method according to the present invention is applied;
The figure is a side view of FIG. 1. DESCRIPTION OF SYMBOLS 1... Laying pipe, 2... Laying band, 6... Running guide means (guide rail), 7... Running guide means (angle guide) 9... Pipe line, 10... Cart.

Claims (1)

[Claims] 1. Installation bands whose outer diameter is expandable and contractible are installed at predetermined intervals within the installation pipe where the conduit is to be laid, and then the running guide means of the trolley is mounted and installed on the installed installation bands, A propulsion piping construction method configured to lay a conduit into the laid pipe by running a cart on which the conduit is mounted and supported along the installed traveling guide means.