JPS6250395U

JPS6250395U -

Info

Publication number: JPS6250395U
Application number: JP13579886U
Authority: JP
Priority date: 1986-09-04
Filing date: 1986-09-04
Publication date: 1987-03-28

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図は本考
案に係る装置の分解斜視図、第２図はコンクリー
ト管を継合した場合の要部拡大縦断面図（第３図
の―線断面図）、第３図は第２図の―線
切断部断面図である。１……シール材、１ａ……平坦部、１ｃ……ジ
ヤバラ構造、２……内張バンド、３……バンド本
体、５……止め金具、６……ナツト、７……ボル
ト、８……目板、９……ゴムパツキング、Ｃ……
コンクリート管。 The drawings show one embodiment of the present invention, and Fig. 1 is an exploded perspective view of the device according to the invention, and Fig. 2 is an enlarged longitudinal sectional view of the main part when concrete pipes are joined (- line in Fig. 3). 3 is a sectional view taken along the line -- in FIG. 2. DESCRIPTION OF SYMBOLS 1... Seal material, 1a... Flat part, 1c... Bellows structure, 2... Lining band, 3... Band body, 5... Stopper, 6... Nut, 7... Bolt, 8... Grain board, 9...Rubber patch king, C...
concrete pipe.

Claims

[Scope of utility model registration request]

A ring-shaped flexible sealing material whose inner circumferential surfaces at both ends are flat, and whose center part has a bellows structure that expands and contracts in the width direction, and a pair of semicircular band bodies face each other. Nuts are attached to both ends of the ring, and bolts with reverse threads on the top and bottom are screwed into the nuts to connect the two, which form a pair of ring-shaped metal interiors that can expand outward. Consisting of a tension band and a batten placed on the outside of the connecting part of the metal lining band, the above sealing material is inserted into the inner periphery of both joint ends of the concrete pipe, and both edges of the sealing material are inserted into the inner periphery of the flat part of the concrete pipe. A joint structure for a concrete pipe, characterized in that the lining band is expanded and crimped onto the inner surface of the concrete pipe to join the concrete pipes.