JP4460102B2 - Transporting and joining pipes - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for transporting and joining a tubular body that transports and joins a curved pipe, a straight pipe, or the like to a predetermined location in a tunnel in the construction of a buried pipe such as gas, water, electricity, and sewage.
[0002]
[Prior art]
In general, in laying construction of buried pipes such as gas, water, electricity, sewage, etc., tunnels with curved and straight parts are dug by excavating machines, and a large number of curved pipes and straight pipes are transported into the tunnel. The pipes are joined together. Moreover, as a method of laying the buried pipe, it is also constructed by a method as disclosed in JP-A-4-125382.
[0003]
By the way, when transporting the above-mentioned curved pipe or the like to a desired location in the tunnel, conventionally, for example, a straight pipe is joined to the curved pipe outside the tunnel, and this straight pipe is placed on a dedicated carriage together with the curved pipe, It is transported to the pipe.
[0004]
[Problems to be solved by the invention]
However, when the curved pipe 101 having a large curvature radius is joined to the straight pipe 102 and transported on the carriage 103 as shown in FIG. 2, for example, when passing through the curved portion 105 in the tunnel 104, the curved pipe 101. There is a problem that the end of the head is caught by the inner wall 106 of the tunnel 104 and cannot pass through the curved portion 105. In particular, when a large bent pipe is placed on the carriage 103 and conveyed in a narrow tunnel, such a problem is remarkable.
[0005]
The present invention has been developed in view of the above points, and the object of the present invention is to install a bent pipe having a large curvature radius together with other connecting pipes at a predetermined location in the construction work of a buried pipe in a tunnel. It is an object of the present invention to provide a method of transporting and joining pipes that can be transported without any problem and that can efficiently join these pipes and existing buried pipes.
[0006]
In order to effectively achieve the above object, the present invention is configured as follows. That is, according to the method for transporting and joining pipes according to the first aspect of the present invention, a spacer is detachably provided in one end of the bent pipe having a smaller radius of curvature, and the connecting pipe is inserted to the front of the spacer in the bent pipe. The bent pipe is placed on the carriage together with this connecting pipe and transported to a predetermined location in the tunnel. The spacer is removed at this location, and the connecting pipe is inserted into the bent pipe by the amount of the removed spacer. The pipe and the bent pipe are joined together.
[0007]
In the method for conveying and joining the tubular body according to the second aspect of the present invention, a spacer is detachably provided in one end portion of the curved pipe with a small radius of curvature, and the connecting pipe is inserted up to the front of the spacer in the curved pipe. The bent pipe is placed on the carriage together with this connecting pipe, and it is transported to the front of the existing buried pipe in the tunnel where the curved part and the straight part are continuous. The spacer is removed at this position, and the connection for the removed spacer is made. One end of the tube is inserted into one end of the bent tube, the connecting tube and the bent tube are joined, and the bent tube and the buried tube are joined.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view showing an example of a method for transporting and joining tubular bodies according to the present invention, and shows a state where a curved pipe or the like placed on a carriage passes through a curved portion in a tunnel.
[0009]
In this figure, 1 is a bent pipe, 2 is a connecting pipe joined to the bent pipe 1, 3 is a spacer, 4 is a dedicated carriage, 5 is a tunnel, 6a is a curved portion of the tunnel, 6b is a straight portion of the tunnel, 7 Is a buried pipe.
[0010]
In addition, the method for transporting and joining the tubular body of the present invention assumes a case where a tubular body (bent tube 1, connecting tube 2, etc.) having a diameter of 1000 mm or more is transported and joined to a predetermined location in a narrow tunnel. It is a developed invention, but of course, it can be freely applied to the conveyance and joining of a pipe body having a diameter of less than 1000 mm. Moreover, the material of the pipe body is made of synthetic resin, various metals, or the like. The connection pipe 2 is a straight pipe, a curved pipe, or other various pipe members.
[0011]
Therefore, the bent pipe 1 is a variety of curved pipes each having a radius of curvature, and the figure is an example of a curved pipe having a radius of curvature. One end of the bent tube 1 is a receiving portion 8 formed so that the connecting tube 2 can be inserted and joined. Further, the other end portion of the bent tube 1 is an insertion portion 9 formed so that one end portion of the buried tube 7 previously disposed in the tunnel can be inserted. Of course, the insertion portion 9 of the bent tube 1 may have a shape that can be inserted into one end of the buried tube 7.
[0012]
The connecting pipe 2 is a straight pipe formed so that one end part 2a can be inserted into the receiving part 8 of the bent pipe 1 and joined.
[0013]
The spacer 3 is formed to be detachably provided in the receiving portion 8 on the side 10 having a small radius of curvature of the bent tube 1 and is made of a metal material, a piece of wood, rubber, or the like. The shape and size of the spacer 3 are not particularly limited, and the spacer 3 is temporarily placed on the receiving port 8 to completely insert the one end 2a of the connecting pipe 2 into the receiving port 8. Any shape and size may be used as long as they can be temporarily blocked.
[0014]
The carriage 4 is a self-propelled type (or remote control type) on which a tubular body (bent pipe 1, connecting pipe 2, etc.) is placed and can be transported, and is placed near the entrance of the tunnel 5. The bent pipe 1 and the connecting pipe 2 are conveyed to a predetermined location in the tunnel 5.
[0015]
The tunnel 5 is a cylindrical hole formed by excavating the ground with an excavating machine so that the curved portion 6a and the straight portion 6b are continuous.
[0016]
When the bent pipe 1 is transported to a predetermined location in the tunnel 5, that is, in front of the buried pipe 7 that has already been transported and arranged in the tunnel 5 in the illustrated example, the curvature of the bent pipe 1 is first outside the tunnel 5. The spacer 3 is provided in the receiving portion 8 on the side 10 having a small radius, and then the one end 2 a of the connecting tube 2 is inserted into the bent tube 1 to the front of the spacer 3. In this case, the temporary connection angle θ of the connection pipe 2 with respect to the bent pipe 1 is preferably 20 ° or less, and preferably about 5 ° to 10 ° in normal use. The bent pipe 1 and the connecting pipe 2 are placed and transported on a carriage 4 that is transported to a desired location in the tunnel 5.
<0017>
When the bent pipe 1 or the like 6a is transported to the front of the existing buried pipe 7 in the tunnel 5 where the curved part 6a or straight part 6b of the tunnel continues as described above, the spacer 3 is removed from the bent pipe 1 at this position. Then, the one end 2a of the connecting tube 2 is inserted into the receiving portion 8 of the bent tube 1 by the amount of the removed spacer 3, and the connecting tube 2 and the bent tube 1 are joined. Next, the bent pipe 1 and the buried pipe 7 are joined.
[0017]
In this way, the bent pipe 1 and the connecting pipe 2 are temporarily joined via the spacer 3, and the bent pipe 1 is connected to the connecting pipe 2 by the carriage 4 while being connected at the temporary connecting angle θ described above. The bent tube 1 and the connecting tube 2 can be transported to a predetermined location without the insertion portion 9 of the bent tube 1 coming into contact with or being caught by the inner wall 11 of the tunnel 5 during transport.
[0018]
【The invention's effect】
As can be seen from the above description, in the method for transporting and joining pipes according to the present invention, a spacer is detachably provided on the side of the curved pipe having a small radius of curvature, and the connection angle between the curved pipe and the connecting pipe is temporarily set. By temporarily changing and temporarily connecting and carrying on a carriage, it is possible to avoid that one end of the radius of curvature contacts or gets caught on the tunnel wall surface during conveyance. Therefore, the bent pipe can be transported to a predetermined location in the tunnel without any problem, and can be smoothly joined to another pipe at the predetermined location.
[0019]
Further, in the method for transporting and joining tubular bodies according to the present invention, a curved pipe or the like can be transported without a problem by a carriage to the front of an existing buried pipe in a tunnel where a curved portion or a straight portion is continuous, and the existing buried pipe and the curved pipe. And can be joined smoothly.
[0020]
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an example of a method for conveying and joining tubular bodies according to the present invention.
FIG. 2 is an explanatory view showing a state in which a tubular body is conveyed at a curved portion in a conventional tunnel.
[Explanation of symbols]
1 Bent pipe 2 Connection pipe 3 Spacer 4 Bogie 5 Tunnel
6a Curved part of tunnel
6b Tunnel straight section 7 Buried pipe

Claims (2)

A spacer is detachably provided in one end of the bent pipe with a small radius of curvature, and a connecting pipe is inserted to the front of the spacer in the bent pipe, and the bent pipe is placed on the carriage together with the connecting pipe, and a predetermined inside of the tunnel. A method of transporting and joining a tubular body in which the connection pipe is inserted into a bent pipe after the spacer is removed to the place, the connecting spacer is inserted into the bent pipe by the amount of the removed spacer, and the bent pipe is joined. A spacer is detachably provided in one end of the bent pipe with a smaller radius of curvature, and a connecting pipe is inserted to the front of the spacer in the bent pipe, and the bent pipe is placed on the carriage together with the connecting pipe, and the bent section and Transport to the front of the existing buried pipe in the continuous tunnel of the straight section, remove the spacer at this position, insert one end of the connecting pipe into the one end of the bent pipe by the amount of the removed spacer, A method of conveying and joining a tubular body that joins a bent pipe and the bent pipe to the buried pipe.

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