TUBE INNER SURFACE OBSERVATION FIXTURE

摘要

PROBLEM TO BE SOLVED: To provide a tube inner surface observation fixture which can be used when an inner surface of a large-diameter tube is observed by inserting a fiber scope into inside the large-diameter tube and which enables an observation object located at a high position to be easily observed. ! SOLUTION: There is provided a tube inner surface observation fixture 10 which supports a tip observation part Vt of a fiber scope SF when the fiber scope SF is inserted into inside a tube from an inspection nozzle 6 to observe the tube inside. The fixture 10 includes: a guide tube 11 in which an inlet opening is formed at one end part; and a fixture body 30 which is connected to the guide tube 11 via a universal joint 20 and is inserted into inside the tube from the inspection nozzle 6. The fixture body 30 includes: an opening/closing mechanism for selectively switching between an inserted condition in which a plurality of leg parts 31 are closed so as to have a smaller diameter than the inspection nozzl