Title:
DRAIN PIPING CUTTING DEVICE
Document Type and Number:
Japanese Patent JP3684619
Kind Code:
B2
Abstract:
PURPOSE: To facilitate the cutting operation of a drain piping communicating to a lower end plate part of a pressure vessel in a nuclear reactor by mounting a cutting mechanism on a truck able to be restricted to a support beam capable of approaching nearly right below the center of the lower end plate part of the pressure vessel in the nuclear reactor.
CONSTITUTION: In cutting off a drain piping 2, a truck 11 is mounted on the upper surface of a support beam 9 extending nearly toward the center of a lower end plate part of a pressure vessel in a nuclear reactor. The air cylinder 32 is contractedly moved to swing a saw tooth 29 to one side of the truck body 12 through a guide member 25 and a saw tooth support member 28. Next, a movable clamp block 14 is adapted to abut against the side of the support beam 9 by human power through a manual device and the truck body 12 is restricted to the support beam 9 by firmly nipping the support beam 9. Thereafter, a motor 22 is operated to drive a saw tooth support member 28 through a drive unit 23 so that the saw tooth 29 cuts deep into the side of a vertical drain pipe 5 to cut off the vertical drain pipe 5.
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Inventors:
Fujio Katahira
Kimura Seisei
Togasaki General
Thick chopsticks Takazen
Kimura Seisei
Togasaki General
Thick chopsticks Takazen
Application Number:
JP16391995A
Publication Date:
August 17, 2005
Filing Date:
June 29, 1995
Export Citation:
Assignee:
Ishikawajima Harima Heavy Industries Co., Ltd.
International Classes:
B24B9/00; B23D21/00; (IPC1-7): B23D21/00
Domestic Patent References:
JP5923298A | ||||
JP6056427U | ||||
JP819917A | ||||
JP871897A |
Attorney, Agent or Firm:
Tsunemitsu Yamada
Seiichi Otsuka
Seiichi Otsuka