スイベルジョイントおよびトンネル切羽前方探査システム

Japanese Patent JP7404147

B2

To provide a swivel joint in which the function of transferring a fluid and the function of a transmission line for transferring an electric signal or electric power are integrated.SOLUTION: The present invention comprises: a cylindrical housing with fluid supply port on the peripheral wall; a rotating shaft consisting of a cylindrical body that penetrates the housing, with a fluid inlet provided on the peripheral wall and an outlet provided on the tip side, and rotatably arranged around the axis with respect to the housing; a blocker that closes the rear end side of the rotating shaft; a swivel-side conductive rod that is placed inside the rotating shaft so that it rotates around the axis together with the rotating shaft and has a connection terminal on the tip side; and a rotating connector placed facing the rear end side of the conductive rod on the swivel side. A hollow portion coaxially formed with the rotary shaft is formed in the blocker, and the rotary connector is connected to the rear end side of the conductive rod on the swivel side by using the hollow portion.SELECTED DRAWING: Figure 1

Yoshihiro Miyake
Koichi Okuzawa
Nobuto Yamada
Toshiba Takashi
Shuichi Shinmachi

JP2020079281A

December 25, 2023

April 28, 2020

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Obayashi Corporation
Japan Underground Exploration Co., Ltd.
Japan Basic Technology Co., Ltd.

E21B17/05; E21B6/02; E21D9/00

JP2020144067A
JP10317870A
JP2003269068A
JP9184166A
JP2001504559A
JP11508023A
JP59044485A
JP2016017900A
JP2017128881A
JP2000170478A
JP2020143547A
JP2020143548A

US5725061

Patent Attorney Corporation Isshiki International Patent Office

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