JP2002243063A - Extension pipe fixing device to inner surface of existing pipeline and fixing and installation method for extension pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extension pipe fixing device for easily constructing an extension pipe on the inner surface of an existing pipeline and a construction method using the device. SOLUTION: The extension pipe fixing device is provided with a single or plural pairs of cylindrical support receiving pipes having the same diameter as the extension pipe, support receiving rings fitting linear or belt-like circular support having a diameter larger than the inside diameter of the pipeline to each of the paired cylindrical support receiving pipes, and a support receiving fixture. In the extension pipe fixing device, the tips of the paired circular supports are connected to each other, the circular support control pipe is connected to the middle part of the paired cylindrical support receiving pipes, and the extension pipes are connected to the right and left (front and rear) parts of the support receiving pipes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an additional pipe fixing device for installing one or more pipes, particularly optical communication cables, on the inner surface of an existing pipeline, and fixing the additional pipe to the inner surface of the existing pipeline. Related to the installation method.

[0002]

2. Description of the Related Art Conventionally, as a method of adding another pipeline or cable (for example, a communication cable or the like) to an existing pipeline, particularly to a buried pipeline, there are the following methods. (2) Saddle method (a method of manually attaching pipes and cables to the pipe wall using a fixture called a saddle in a pipe that humans enter), (3) Saddle method (existing pipes) Laying tubes and cables between existing tubes and pods)
(4) There is a drawing method (a method of drawing a pipe or a cable into an existing pipe and putting it in).

[0003]

SUMMARY OF THE INVENTION The above-mentioned conventional method includes:
Existing pipes are old, deteriorated, damaged, cracked, depressed,
If there is a problem such as water leakage,
There is a problem that construction cannot be performed unless the pipeline is repaired. In addition, the construction cannot be performed unless the robot can pass through the pipeline smoothly in the method (1). There is an environmental condition that can enter the pipe line and work safely. In the method of (3), another pipe called a sheath is inserted into the existing pipe, and small pipes and cables are inserted into the gap between this pipe and the existing pipe. With the method of installation, the inner diameter of the existing pipe is considerably reduced. In the method of (4), the pipes and cables are drawn down into the pipeline, so that the sewage pipes are caught with garbage. And other problems.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventor has found that, when one or more pipes are added to the inner surface of an existing pipeline, a pair of movable support receiving pipes are provided. The above-mentioned problems have been posed at once by a device capable of providing a support, connecting the tips of the pair of supports, and holding and fixing an extension pipe to the inner surface of the pipeline by the support tip and a method using the same. It has been found that the present invention can be solved. That is, the present invention provides (1) a cylindrical support receiving pipe having the same diameter as a pair of one or more movable extension pipes, and each of the pair of cylindrical supporting receiving pipes having a diameter larger than the inner diameter of the conduit. A support receiving ring and a support receiving fixing device to which the linear or band-shaped circular support is attached are provided, and the distal ends of the pair of circular supports are connected to each other to form the pair of cylindrical supports. An extension pipe fixing device comprising a circular support adjusting pipe at an intermediate portion of the receiving pipe, and additional pipes connected to left and right (and front and rear) of the support receiving pipe, respectively;
(2) The additional tube fixing device according to (1), wherein the cylindrical support receiving tube and the circular support adjusting tube are loosely connected to each other, and (3) the loosely connectable connection is a screw. (4) A support receiving ring is rotatably mounted on the support receiving tube (1) or (2).
The additional pipe fixing device described in (5) or (1) is inserted into the inner surface of the pipe, and the connection between the cylindrical support receiving pipe, the circular support adjusting pipe, and the additional pipe is tightened to form a pair of cylinders. The connecting portion of the circular support provided on the support receiving ring on the cylindrical support receiving tube is brought into contact with the inner bottom surface of the conduit to hold and fix the additional tube. Related to fixed installation method.

[0005] The present invention relates to the construction of an existing pipe (mainly a sewer pipe)
An additional pipe fixing device for adding another (one or more) different pipes (pipes for installing cables and the like, additional pipes),
In this method, an additional pipe is fixedly installed in an existing pipe using the additional pipe fixing device. The apparatus for fixing an additional pipe to the inner surface of an existing pipe and the method of fixing and installing the additional pipe according to the present invention will be described in detail below. FIGS. 1, 2 and 3 are schematic views of the entire structure of an apparatus for fixing an additional pipe to the inner surface of an existing pipe according to the present invention. FIG. 1 is a schematic view of an additional pipe fixing device according to the present invention before or during insertion into a pipe, and includes support receiving rings 3 and 3 attached to a pair of cylindrical support receiving tubes 1 and 1 ′. Is provided with circular supports 2 and 2 ', and the tips of the circular supports 2 and 2' are connected by a. A circular support adjusting tube 4 is connected to an intermediate portion between the pair of cylindrical support receiving tubes 1 and 1 ', and additional tubes 6 are connected to both sides of the cylindrical support receiving tubes 1 and 1'. . FIG. 1 is a schematic view of an additional pipe fixing device in a state in which a cylindrical support receiving pipe 1, 1 'and a circular support adjusting pipe 4 are loose and connected before and during insertion into a pipeline. FIG. 2 is a schematic view of an additional pipe fixing device in a stage of tightening the connection between the cylindrical support receiving tubes 1, 1 'and the circular support adjusting tube 4 after insertion, and FIG. 1, 1 ′ is a schematic view of an additional pipe fixing device in a state where connection of a circular support adjusting pipe 4 is closed. The screws of the cylindrical support receiving tube and the circular support adjusting tube can be tightened by rotating one end of the additional pipe fixing device of the present invention at the opening. At this time, since the support receiving ring can be freely rotated on the support receiving tube, the circular support 2
And 2 'approach and the joint a is fixed in contact with the bottom surface in the pipeline. The support receiving rings 3 and 3 'are fixed in position by support receiving fixtures 5 and 5'. FIG. 4 is an insertion diagram showing a state in which an additional pipe fixing device is inserted into a pipe and the additional pipe is fixed. The fixing device of the present invention can be applied to the case where the extension pipe fixing position is any of the upper, lower, left and right. FIG. 5 is a schematic view showing a state where the circular supports 2, 2 'are attached to the support receiving rings 3, 3'. In the figures, 1 and 1 'are support receiving tubes, 2 and 2' are circular supports, 3 and 3 'are support receiving rings, 4 is a circular support adjusting tube, 5 is a support receiving fixing device, and 6 is a support receiving fixture. The extension pipes 7 and 7 'are the pipe inner surfaces. In the present invention, one or more pipes (single or single pipes) such as pipes for accommodating additional pipes 6, for example, cables (for example, optical communication cables, electric wires, etc.) are provided in existing pipes, for example, sewer pipes provided underground. This is an apparatus for increasing the number of pipes and a method for constructing the same.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, an apparatus for fixing an additional pipe to the inner surface of a pipe according to the present invention comprises a pair of cylindrical support receiving pipes 1, 1 'having the same diameter as the additional pipe and a circular pipe. The cylindrical support receiving tube 1, 1 'is inserted by inserting the tube which is loosely connected to the support adjusting tube 4 into the duct, and strongly connecting both tubes which are loosely connected. Circular supports 2 and 2 'attached to a support receiving ring provided at
A method is used in which the distance between them is reduced, and the joint a is brought into contact with the bottom of the pipeline to support the extension pipe. The connection between the cylindrical support receiving tube and the circular support adjusting tube may be performed by any means, but can be performed by, for example, providing uneven screws. Then, the distance between the cylindrical support receiving tubes 1 and 1 'is adjusted by a screw through the circular support adjusting tube 4 to be reduced, and the support receiving rings provided on the support receiving tubes 1 and 1', respectively. The connecting portion a of the circular supports 2 and 2 ′ attached to 3 is brought into contact with the bottom of the pipe to support and fix the additional pipe. The screw for connecting or connecting the cylindrical support receiving pipe, circular support adjusting pipe, and extension pipe may be male or female, and all pipes are connected by rotating from one end of the runaway value at the pipe entrance Can be threaded to tighten. The connection between the extension pipe and the cylindrical support receiving pipe is in a tight state from the beginning, and is fixed by, for example, screws. In order to facilitate the connection by screws, the cylindrical support receiving tube or the circular support adjusting tube can be made free. The support receiving ring 3 provided on the cylindrical support receiving tubes 1 and 1 'can rotate freely on the support receiving tubes, and is fixed by a support receiving fixing fixture 5. As shown in FIG. 4, the circular support 2 is attached to the support receiving ring 3. The circular support 2 can be attached by any method, such as a method of providing a stopper on the support receiving ring 3 and fitting the ring to the stopper. The mounting position may be any, but it is preferable to mount it at the upper position so that there is no gap with the pipeline. The circular support 2 may be linear or band-shaped, but is made of a flexible metal or plastic that can be restored even if the ring of the circular support is extended at the time of insertion. In the present invention, as shown in FIG. 1, the cylindrical support receiving tubes 1, 1 'and the circular support adjusting tube 4 are loosely connected to each other, and the circular shape on the support receiving ring provided on the cylindrical support receiving tube is provided. Since the support is inserted into the pipeline in a lying state, it is easy to insert into the pipeline. After the insertion, by rotating one end of the rear end and tightening the screw, the circular support is inserted. And the connecting portion is brought into contact with the bottom of the pipeline, whereby the extension pipe is supported and fixed to the inner surface of the pipeline. Since the pair of circular supports of the present invention are joined at their distal ends and supported using the fulcrums as support points, the extension pipe can be firmly and reliably supported and fixed.

[0007]

EXAMPLES The present invention will be described below with reference to examples, but it goes without saying that the present invention is not limited to these examples. [Embodiment 1] In the extension pipe fixing device of the present invention, the one in which the connection between the cylindrical support receiving pipe and the support adjusting pipe is loosened is placed at a predetermined position on the inner surface of the existing pipeline. By rotating one end of the pipe from the pipe opening and tightening a screw provided on each pipe to strengthen the connection between the pipes, the distance between the cylindrical support receiving pipes 1 and 1 'is adjusted to adjust the distance between the pipes. The connecting portion of the circular support attached to the support receiving ring provided on the support receiving tube was brought into contact with the inner surface of the conduit to hold and fix the extension tube.

[0008]

The apparatus for fixing an additional pipe to the inner surface of an existing pipeline according to the present invention is provided on the support pipe by tightening the connections of the cylindrical support pipe, the circular support control pipe, and the additional pipe. The fixed part of the circular support attached to the support receiving ring is brought into contact with the bottom surface of the pipe to support and fix it.It has a very simple structure, and supports the extension pipe firmly and securely. It can be fixed. Since the additional pipe fixing device has a simple structure, it can be easily inserted into the inner surface of the existing pipeline, and the positioning and fixing of the additional pipe can be performed extremely easily.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an entire structure of an additional pipe fixing device according to the present invention in a state in which coupling between pipes before insertion of existing pipes is loose.

FIG. 2 is a schematic diagram of the entire structure of a process of tightening the connection between the respective pipes of the additional pipe fixing device of the present invention after the existing pipe line is inserted.

FIG. 3 is a schematic structural view showing a state in which a connection between respective pipes is closed after an existing pipe is inserted in the additional pipe fixing device of the present invention.

FIG. 4 is a schematic diagram showing a state in which an additional pipe is fixed in a pipe by the additional pipe fixing device of the present invention.

FIG. 5 is a schematic view showing a state where a circular support is attached to a support receiving ring.

[Explanation of Codes] Cylindrical support receiving tube 1 '. 1. cylindrical support receiving tube Support 2 '. Support 3. Support receiving ring 3 '. Support receiving ring 4. Support adjusting tube 5. Support receiving fixture 6. Extension pipe 7. Pipe inner surface 7 '. Pipe inner surface a. Joint

Claims (5)

[Claims] 1. A cylindrical support receiving tube having the same diameter as a pair of one or more movable extension tubes, and a linear or a cylindrical tube having a diameter larger than the inner diameter of the conduit. A support receiving ring to which a band-shaped circular support is attached and a support receiving fixture are provided, and the tip portions of the pair of circular supports are connected to each other, and are provided between the pair of cylindrical support receiving tubes. An extension pipe fixing device comprising a circular support adjusting pipe connected to a portion, and an extension pipe connected to left and right (or front and rear) of the support receiving pipe. 2. The expansion pipe fixing device according to claim 1, wherein the cylindrical support receiving pipe and the circular support adjusting pipe are loosely connected to each other. 3. The expansion pipe fixing device according to claim 2, wherein the loosely-lockable connection is a screw. 4. The additional pipe fixing device according to claim 1, wherein the support receiving ring is rotatably mounted on the support receiving pipe. 5. The extension pipe fixing device according to claim 1 is inserted into the inner surface of the pipe, and the connection between the cylindrical support receiving pipe, the circular support adjusting pipe and the additional pipe is tightened to form a pair of cylindrical support receiving pipes. A method for fixing and installing an additional pipe on the inner surface of an existing pipeline, wherein the connecting portion of the circular support provided on the upper support receiving ring is brought into contact with the inner bottom surface of the pipeline to hold and fix the additional pipe.