Title:
AUTOMATIC DUSTPROOF DEVICE
Document Type and Number:
Japanese Patent JP3970468
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent damage of an automatic dustproof machine by pulling up the automatic dustproof machine by a pulling-up device.
SOLUTION: In an automatic dustproof machine 3 arranged in an inlet of a branch waterway 2, when there is the possibility of damging the automatic dustproof machine 3 by freezing in the winter or a collision of a large suspended matter at flood time, or when using the branch waterway 2 as the drain side of a water introducing passage operated by switching water-intake and drain, the automatic dustproof machine is pulled upward from the inlet of the branch waterway 2. In pulling up this, a rope 51 is wound by driving a hoisting drum 50, and a frame 34 of the automatic dustproof machine 3 is thereby pulled up along a guide rail 40. Thus, the automatic dustproof machine 3 can be easily and stably placed on the guide rail 40 almost horizontally arranged in an upper position of the branch waterway 2. The automatic dustproof machine can be easily pulled up and rearranged by vertically or curvedly arranging a moving guide rail.
Inventors:
Akira Yoneda
Eiichi Muto
Teruichi Shinfu
Eiichi Muto
Teruichi Shinfu
Application Number:
JP7555999A
Publication Date:
September 05, 2007
Filing Date:
March 19, 1999
Export Citation:
Assignee:
Hitachi Plant Technology Co., Ltd.
International Classes:
E02B5/08; (IPC1-7): E02B5/08
Domestic Patent References:
| JP3066813A | ||||
| JP11021856A | ||||
| JP2125033U | ||||
| JP1061228U |
Attorney, Agent or Firm:
Osamu Mori