Connection branch pipe

Abstract

To provide a connection branch pipe capable of improving the reliability of the execution, and achieving labor saving of the piping construction.The connection branch pipe 1 is comprised of a locking member 6 in which two locking pawls 4, 5 locked in the periphery of an opening 3 of a main drainage 2 are installed, a saddle member 7 fitted into the locking member 6 and installed on the main drainage 2, and a connecting member 9 inserted into the saddle member 7 and provided with a connection port 8 connected by an attached pipe. One locking pawl 4 is rotatably and pivotable attached to the locking member 6 via a pivot pin 11, the locking pawl 4 can pass the opening 3 of the main drainage 2 by revolving the pivotably attached locking pawl 4. The locking pawl 4 is prevented from revolving by screwing the connecting member 9 to the locking member 6, and the locking pawl 4 can not pass the opening 3 of the main drainage 2.

Description

technical field

[0001] The invention relates to a connecting branch pipe used for connecting branch pipes such as installation pipes on a main pipe such as a sewer main pipe. Background technique

[0002] Generally, when connecting the installation pipe connected to the common tank of each household to the main sewer pipe, when piping from the main sewer main pipe to the upstream side, a saddle-shaped branch pipe is installed at a predetermined position of the main sewer main pipe to branch the main sewer main pipe. Perform piping work to connect the branch pipe to the installation pipe.

[0003] Then, when installing a branch pipe on the main sewer pipe, use a hole-opening machine (Holso-1) to open an opening at a predetermined position on the main sewer pipe, install a saddle-shaped branch pipe on the opening, and then use an adhesive on the main sewer pipe. Or paste cement to fix the branch.

[0004] However, when using adhesives or pasty adhesives, it is difficult to s...

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