JPS5729721A - Movable weir made of elastic film - Google Patents
Movable weir made of elastic filmInfo
- Publication number
- JPS5729721A JPS5729721A JP7838281A JP7838281A JPS5729721A JP S5729721 A JPS5729721 A JP S5729721A JP 7838281 A JP7838281 A JP 7838281A JP 7838281 A JP7838281 A JP 7838281A JP S5729721 A JPS5729721 A JP S5729721A
- Authority
- JP
- Japan
- Prior art keywords
- dam
- water level
- water
- falling
- upstream
- 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
Links
Abstract
PURPOSE: To enable to perform an automatic falling even in the case of a large- caliber pipe, by method wherein water is fed to a water tank through a water level detecting tube at the upstream of a dam, and a valve, which feeds and discharges fluid to and from a cover, is cuased to open and close through the change in a water level.
CONSTITUTION: A cover 1 for a rising and falling rubber dam is mounted at the bottom of a river across the river, and water is fed to the water tank 43 through a water level detecting tube 30 opening at the upstream of the dam below a water level whereat the movable dam self-falls. Compressed air is caused to work on a valve 6 at an exhaust pipe 42 through the working of a float 44 in the water tank. With the valve 6 released when a water level at the upstream of the dam reaches the self-falling water level, air in the cover 1 is released to cause falling of the dam resulting from the contraction.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7838281A JPS5729721A (en) | 1977-12-07 | 1981-05-22 | Movable weir made of elastic film |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52147638A JPS604325B2 (en) | 1977-12-07 | 1977-12-07 | Flexible membrane movable weir |
JP7838281A JPS5729721A (en) | 1977-12-07 | 1981-05-22 | Movable weir made of elastic film |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52147638A Division JPS604325B2 (en) | 1977-12-07 | 1977-12-07 | Flexible membrane movable weir |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5729721A true JPS5729721A (en) | 1982-02-17 |
Family
ID=26419464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7838281A Pending JPS5729721A (en) | 1977-12-07 | 1981-05-22 | Movable weir made of elastic film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5729721A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02287708A (en) * | 1989-04-28 | 1990-11-27 | Yanmar Diesel Engine Co Ltd | Movement control method for unmanned moving body |
-
1981
- 1981-05-22 JP JP7838281A patent/JPS5729721A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02287708A (en) * | 1989-04-28 | 1990-11-27 | Yanmar Diesel Engine Co Ltd | Movement control method for unmanned moving body |
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