Grout injection or discharge attachment

Abstract

As shown in Reference Cross-Sectional Diagram 1 showing the state of use and Reference Cross-Sectional Diagram 2 showing the state of use, this product is attached to an injection port or discharge port that has been drilled to connect to an unfilled area inside a concrete structure such as a bridge when injecting grout into the unfilled area. As shown in the reference cross-sectional diagrams showing the names of each part, this product comprises an inner cylindrical portion having a flow path for the grout, an outer cylindrical portion disposed on the outer periphery of the inner cylindrical portion, a packer made of an elastic material and disposed between the outer cylindrical portion and a stopper provided at one end of the inner cylindrical portion in the central axial direction, and a rotation operating part that is threaded onto a threaded portion provided at the other end of the inner cylindrical portion in the central axial direction and is rotated when attached to the injection port or discharge port. The outer cylindrical portion presses the packer as the rotation operating part is rotated, thereby pressing the outer surface of the packer against the inner surface of the injection port or discharge port, thereby attaching the product.

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