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Patent Searching and Data


Title:
FLAP GATE
Document Type and Number:
WIPO Patent Application WO/2019/235053
Kind Code:
A1
Abstract:
A flap gate 10 comprises a door 10 that has a rotary shaft 12 and that is erected by rotating about the rotary shaft 12, and an auxiliary drive unit 20 that applies a tension force to the door 10 in order to assist in erecting the door 10. The auxiliary drive unit 20 comprises: a hydraulic circuit 21 that has an accumulator 22, and a hydraulic cylinder 23 connected to the accumulator 22 via a main channel 24 and supplied with the hydraulic pressure accumulated in the accumulator 22; and a transmission unit 45 that is coupled to the door 10, that is configured so as to cause the working force of the hydraulic cylinder 23 generated by the hydraulic pressure supplied by the accumulator 22 to act on the door 10 as a tension force, and that is configured so that the vertical distance of the rotary shaft 12 with respect to the direction that the tension force acts is at a maximum while the door 10 is being erected.

Inventors:
MORII TOSHIAKI (JP)
NAKAYASU KYOICHI (JP)
KIMURA YUICHIRO (JP)
MIYAMOTO KUNIE (JP)
Application Number:
PCT/JP2019/015291
Publication Date:
December 12, 2019
Filing Date:
April 08, 2019
Export Citation:
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Assignee:
HITACHI SHIPBUILDING ENG CO (JP)
International Classes:
E02B7/40
Domestic Patent References:
WO2018070512A12018-04-19
Foreign References:
JP2006219955A2006-08-24
Attorney, Agent or Firm:
TERAZONO Kenichi et al. (JP)
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