JPS63200183U - - Google Patents

Info

Publication number
JPS63200183U
JPS63200183U JP7987388U JP7987388U JPS63200183U JP S63200183 U JPS63200183 U JP S63200183U JP 7987388 U JP7987388 U JP 7987388U JP 7987388 U JP7987388 U JP 7987388U JP S63200183 U JPS63200183 U JP S63200183U
Authority
JP
Japan
Prior art keywords
tube
magnetic sensors
opening
metal tube
carriage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7987388U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP7987388U priority Critical patent/JPS63200183U/ja
Publication of JPS63200183U publication Critical patent/JPS63200183U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Description

【図面の簡単な説明】
第１図は、一実施例を示す一部破断した側面図
である。第２ないし６図は、磁気センサの配置に
関する実施例を示す図である。第３図には、差動
方式を用いた場合を示す。また第４〜６図は、コ
イル型磁気センサを用いた場合の実施例で、各図
ａは平面図、各図ｂは側面図である。第７図は、
前置センサをモータで回転させる場合の一実施例
を示す。 １…金属本管、２…開口部、３…枝管、４…コ
ーテイング膜、５…けん引ロープ、６…架台、７
…磁気センサ、８…ベアリング、９…おもり、１
０…主センサ、１１…穿孔機、１２…モータ、１
３…信号ケーブル、１４…車輪、１５…励磁コイ
ル、１６…検出コイル、１７…モータ、１８…台
車。

Claims (1)

    【実用新案登録請求の範囲】
  1. 金属管の開口部に生ずる磁場変化を検出する複
    数個の磁気センサと、これらの磁気センサを管内
    壁面に対向させて放射状に配置し保持する架台と
    、該架台を前記の放射の中心を金属管の管軸線上
    に位置させて保持し、管内を移動可能な台車とか
    らなることを特徴とする金属管の開口部検出装置
    。
JP7987388U 1988-06-16 1988-06-16 Pending JPS63200183U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7987388U JPS63200183U (ja) 1988-06-16 1988-06-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7987388U JPS63200183U (ja) 1988-06-16 1988-06-16

Publications (1)

Publication Number Publication Date
JPS63200183U true JPS63200183U (ja) 1988-12-23

Family

ID=30930154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7987388U Pending JPS63200183U (ja) 1988-06-16 1988-06-16

Country Status (1)

Country Link
JP (1) JPS63200183U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03163393A (ja) * 1989-11-21 1991-07-15 Akitsu Seiki Kk 埋設管路探査用発信器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514392B1 (ja) * 1968-10-17 1976-02-10
JPS56126760A (en) * 1980-03-11 1981-10-05 Nec Corp Detecting method for open part of embedded pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514392B1 (ja) * 1968-10-17 1976-02-10
JPS56126760A (en) * 1980-03-11 1981-10-05 Nec Corp Detecting method for open part of embedded pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03163393A (ja) * 1989-11-21 1991-07-15 Akitsu Seiki Kk 埋設管路探査用発信器

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