Title:
FLOATING FLAP GATE
Document Type and Number:
WIPO Patent Application WO/2013/108471
Kind Code:
A1
Abstract:
In order to speed up the movement of a door body at the early stage of inflow and at the start of falling down and lessen impulsive force at the completion of standing up and at the completion of falling down, a floating flap gate (11) is configured such that a leading end side (12b) of a door body (12) is able to swing upright with a base end side (12a) as a pivot in the direction of water flowing into an opening or a gateway. An auxiliary force generation means (20) is attached to the other end of a wire rope (14) one end of which is attached to the door body (12). The auxiliary force generation means (20) has a configuration in which a helical compression spring (22) is disposed in a space (21a) formed within a counterweight (21), and a press plate (23) that is connected to the other end of the wire rope (14) passing through a central portion of the helical compression spring (22) through a hole (21b) formed in the ceiling of the counterweight (21) is brought into contact with the lower surface of the helical compression spring (22) to thereby cause compressive force to act on the helical compression spring (22). An overflow at the early stage of inflow can be prevented, and also at the start of falling down, water level following performance is improved. Further, impulsive force at the completion of standing up and at the completion of falling down can be lessened.
Inventors:
NAKAYASU KYOUICHI (JP)
MORII TOSHIAKI (JP)
YOSHIKI RYOUTA (JP)
INUI MASAKI (JP)
KIMURA YUUICHIROU (JP)
MORII TOSHIAKI (JP)
YOSHIKI RYOUTA (JP)
INUI MASAKI (JP)
KIMURA YUUICHIROU (JP)
Application Number:
PCT/JP2012/079294
Publication Date:
July 25, 2013
Filing Date:
November 12, 2012
Export Citation:
Assignee:
HITACHI SHIPBUILDING ENG CO (JP)
International Classes:
E02B7/44; E02B7/50; E06B5/00
Foreign References:
| JP2003253912A | 2003-09-10 | |||
| JP2000319857A | 2000-11-21 | |||
| JPS6443675A | 1989-02-15 |
Attorney, Agent or Firm:
MIZOGAMI, Tetsuya et al. (JP)
Tetsuya Mizogami (JP)
Tetsuya Mizogami (JP)
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Claims: