Title:
TRAVELING DEVICE FOR INSPECTING INSIDE OF PIPE CONDUIT
Document Type and Number:
Japanese Patent JP3046921
Kind Code:
B2
Abstract:
PURPOSE: To provide a traveling device for inspecting the inside of a pipe conduit which is available for follow-up traveling inspections for various types of diameters and is most suitable for the piping of a main cooling system in a nuclear power plant.
CONSTITUTION: A running device 1 is set up which can be widely opened and closed by installing drive wheels 1a to 1d in edge angle positions of a tetrahedron, crossing frames 2a to 2d radially projecting from the center like two pairs of pantographs so that the frames can be bent freely and installing and connecting gas cylinders 6a to 6d on both sides of each of the two respective pairs of the pantographs mechanisms and can make a following movement toward the axis of a pipe conduit at a tip of the pantographs of the connections by inserting and fixing a circling drive part 8 of a sensor scanning mechanism part 7 for a test into the axial center of the pipe conduit. Moreover, the device is made extendible and shrinkable toward the normal direction of the pipe conduit by two respective pairs of multistage telescopic gas cylinders 10a to 10d where two sets of sensor components 9a and 9b for a test installed back to back are laid out back to back in the direction of the axial center of the pipe conduit and, at the same time, is equipped with the sensor scanning mechanism part 7 for a test which is available for alignment and precession in the directions of the axial center of the pipe conduit and the curvature radius of a bending pipe conduit by supporting the cylinders with gimbals mechanism members 11a and 11b.
Inventors:
Etsuo Nagaoka
Masahiko Inoue
Tomoyoshi Maruyama
Masahiko Inoue
Tomoyoshi Maruyama
Application Number:
JP3809695A
Publication Date:
May 29, 2000
Filing Date:
February 27, 1995
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
G21C17/003; B25J5/00; B61B13/10; F16L55/32; G01N21/88; G01N21/954; G01N27/82; G01N29/04; G01N29/26; (IPC1-7): G21C17/003; B25J5/00; B61B13/10; F16L55/32; G01N21/88; G01N27/82; G01N29/10; G01N29/26
Domestic Patent References:
| JP7260757A | ||||
| JP2291961A | ||||
| JP6348152U |
Attorney, Agent or Firm:
Toshiro Mitsuishi (1 person outside)
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