JPS5542044A - Method of inspecting inside of conduit buried under ground - Google Patents

Method of inspecting inside of conduit buried under ground

Info

Publication number
JPS5542044A
JPS5542044A JP11541378A JP11541378A JPS5542044A JP S5542044 A JPS5542044 A JP S5542044A JP 11541378 A JP11541378 A JP 11541378A JP 11541378 A JP11541378 A JP 11541378A JP S5542044 A JPS5542044 A JP S5542044A
Authority
JP
Japan
Prior art keywords
camera
conduit
sled
buried under
under ground
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
JP11541378A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NICHIBEI SANGYO KK
Original Assignee
NICHIBEI SANGYO KK
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 by NICHIBEI SANGYO KK filed Critical NICHIBEI SANGYO KK
Priority to JP11541378A priority Critical patent/JPS5542044A/en
Publication of JPS5542044A publication Critical patent/JPS5542044A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To remarkable accurately inspect the inside of a conduit buried under ground by combining a television camera with a normal camera. CONSTITUTION:A pipe type television camera 2 with a sled 1 is connected by a connecting wire 5 to an automatic camera 3 with a sled 4 having a lens 3a containing the same light receiving angle as that of the lens 2a of the television camera 2. These cameras 2 and 3 longitudinally connected are carried into a conduit A to be inspected. Then, a wire rope 7 pulled out from a towing winch 6 is introduced into the conduit A and connected to the camera 2. A wire rope 7' pulled out from a winch 8 arranged at the opening edge of the other manhole B' is connected to the end of the sled 4 of the camera 3. When the winch 6 is wound, the cameras 2 and 3 are moved through the conduit A.
JP11541378A 1978-09-20 1978-09-20 Method of inspecting inside of conduit buried under ground Pending JPS5542044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11541378A JPS5542044A (en) 1978-09-20 1978-09-20 Method of inspecting inside of conduit buried under ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11541378A JPS5542044A (en) 1978-09-20 1978-09-20 Method of inspecting inside of conduit buried under ground

Publications (1)

Publication Number Publication Date
JPS5542044A true JPS5542044A (en) 1980-03-25

Family

ID=14661947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11541378A Pending JPS5542044A (en) 1978-09-20 1978-09-20 Method of inspecting inside of conduit buried under ground

Country Status (1)

Country Link
JP (1) JPS5542044A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159156U (en) * 1981-03-31 1982-10-06
EP0083759A2 (en) * 1982-01-07 1983-07-20 Sumitomo Electric Industries Limited Device for monitoring the interior of a conduit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159156U (en) * 1981-03-31 1982-10-06
JPS647313Y2 (en) * 1981-03-31 1989-02-27
EP0083759A2 (en) * 1982-01-07 1983-07-20 Sumitomo Electric Industries Limited Device for monitoring the interior of a conduit

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