WO2016174919A1 - Floating body type flap gate - Google Patents

Floating body type flap gate Download PDF

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Publication number
WO2016174919A1
WO2016174919A1 PCT/JP2016/056444 JP2016056444W WO2016174919A1 WO 2016174919 A1 WO2016174919 A1 WO 2016174919A1 JP 2016056444 W JP2016056444 W JP 2016056444W WO 2016174919 A1 WO2016174919 A1 WO 2016174919A1
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WO
WIPO (PCT)
Prior art keywords
door body
pulley
flap gate
gate body
water
Prior art date
Application number
PCT/JP2016/056444
Other languages
French (fr)
Japanese (ja)
Inventor
俊明 森井
京一 仲保
訓兄 宮本
雄一郎 木村
Original Assignee
日立造船株式会社
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Application filed by 日立造船株式会社 filed Critical 日立造船株式会社
Publication of WO2016174919A1 publication Critical patent/WO2016174919A1/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/40—Swinging or turning gates
    • E02B7/44—Hinged-leaf gates
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/50—Floating gates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor

Definitions

  • the present invention does not allow the increased water to flow into places that cannot be raised or do not want to be raised at all times, such as buildings with wide openings, underground spaces, end of land locks, runways, revetments, embankments, etc.
  • the present invention relates to a floating flap gate that floats a door body and prevents the inflow of water.
  • Patent Documents 1 and 2 disclose that the door body is lifted using the buoyancy of the water to be introduced, and the breakwater and tide wall A floating flap gate that blocks an opening is disclosed.
  • the floating-type flap gate disclosed in Patent Documents 1 and 2 includes a door body opening / closing assist mechanism.
  • This opening / closing assist mechanism does not cause the door body to move up early in the inflow and overflow into the living space or underground space, and it does not easily fall over when the water level drops, and may fall down suddenly. It is something to prevent.
  • one end of the rope is attached to the tip of the door, and the other end of the rope is attached to a counterweight or a spring via a fixed pulley.
  • the said fixed pulley is installed so that a counterweight may become the lowest point or a spring may become natural length in the middle of standing or lying down of a door body.
  • the opening / closing auxiliary mechanism of the door body is provided inside a door stop installed on the side portion of the fallen door body.
  • assistance mechanism of a door body is provided in the inside of the storage body provided in the position facing the rope attachment part of the front end surface both sides of the fallen door body.
  • the opening / closing assist mechanism of the door disclosed in Patent Documents 1 and 2 assists the opening / closing of the door from both sides of the door. In this case, it becomes difficult to assist opening and closing of the door body when the width (diameter) of the door body becomes long.
  • Patent Documents 1 and 2 For the reasons described above, in applications where a ground structure cannot be provided in the widthwise intermediate portion of the door body or where it is not desired to provide a ground structure in the widthwise intermediate portion of the door body, it is disclosed in Patent Documents 1 and 2.
  • the door opening / closing assist mechanism cannot be used.
  • the problem to be solved by the present invention is to cope with the case where the ground structure cannot be provided at the intermediate portion in the width direction of the door body in the case of the opening / closing assist mechanism provided in the ground structure on the door body side portion of the floating flap gate. Is that you can't.
  • the opening / closing assist mechanism for the door of the floating flap gate can be installed even when the span is long like the end of the runway and a ground structure cannot be provided in the middle. It was made for the purpose of making it.
  • the front end side of the door body in the plane in the height direction in the direction of the inflowing water is oscillated with the rotation axis on the base end side as a fulcrum.
  • the main feature of this floating-type flap gate is that it is provided with a door body opening / closing assist mechanism having the following configuration.
  • the opening / closing assist mechanism for the door body of the present invention fixes one end of the rope to the back surface of the fallen door body, and the other end of the rope at the tip of the door body in the storage space for storing the fallen door body It is fixed to the ceiling of the underground space formed on the side. Then, the first and second fixed pulleys and the first and second movable pulleys are arranged inside the underground space, and the other end of the rope is guided by this pulley group.
  • the push-up rod attached with the first moving pulley is moved up and down by raising and lowering the counterweight attached with the second moving pulley for guiding the rope, and the front end side of the door body is pushed up and lying down. Suppresses sudden lodging at the end. Further, the tension acting on the rope performs shock absorption at the end of standing and water level tracking at the initial stage of lodging.
  • the door body opening / closing assist mechanism is installed in the underground space formed on the front end side of the door body in the storage space for storing the fallen door body. Therefore, the floating flap gate can be installed even when the span is long like the end portion of the runway and the ground structure cannot be provided at the intermediate portion.
  • the door body opening / closing assist mechanism enables standing assistance at the initial stage of standing up the door, absorbing shock at the end of standing, tracking the water level at the initial stage of lodging, and suppressing the lodging at the end of lodging. Accordingly, overflow prevention at the beginning of inflow and impact at the time of completion of standing can be mitigated, followability to the water level is improved in the initial stage of lodging, and sudden lodging before the completion of lodging is eliminated.
  • the door body opening / closing assist mechanism is installed in the underground space formed on the front end side of the door body in the storage space for storing the fallen door body. Therefore, even if it is a case where a ground structure cannot be provided in the intermediate part of a door with a long span, it can install.
  • FIG. 5 is a view similar to FIG. 4 in the mid-rise period.
  • FIG. 5 is a view similar to FIG. 4 at the end of standing. It is a figure similar to FIG. 4 in the initial stage of lodging. It is a figure similar to FIG. 4 in the middle period of lodging.
  • FIG. 5 is a view similar to FIG. 4 at the end of lodging. It is a figure explaining the setting of the upper limit stroke of the push rod which supports the 1st moving pulley of the pulley group which comprises the opening / closing assist mechanism of a door body. It is a figure explaining the setting of the weight of the counterweight which comprises the opening / closing assist mechanism of a door body.
  • An object of the present invention is to enable a door having a long span to be installed even when a ground structure cannot be provided at an intermediate portion of the door having a long span. And this invention implement
  • FIGS. 1 to 3 are diagrams showing a schematic configuration of a floating flap gate of the present invention.
  • reference numeral 1 denotes a floating flap gate of the present invention installed on a road surface rs of an opening provided in a breakwater or a tide wall, for example.
  • the floating flap gate 1 uses the water pressure of the flowing water w as a fulcrum to support the rotating shaft 2c on the base end side 2a when the water w tries to flow into the living space or underground space from the ocean (or river).
  • the front end side 2b of the door body 2 is swung upright to block the opening in a watertight state.
  • the floating flap gate 1 of the present invention has one end of a wire rope 4 attached to the back surface 2d of the door body 2 in a lying state, as shown in FIG.
  • the bracket 3 is provided on both sides of the rear surface 2d of the door body 2, for example, in the middle in the height direction of the door body 2.
  • one end of a wire rope 4 is attached to these brackets 3.
  • the other end of the wire rope 4 is drawn into an underground space 5 a formed on the distal end side 2 b of the door body 2 in the storage space 5 for storing the fallen door body 2.
  • a counterweight 6 Inside the underground space 5a, for example, a counterweight 6, compression springs 10 provided on both sides of the upper surface of the counterweight 6, first and second constant pulleys 7a and 7b, and first and second movable pulleys.
  • a pulley group consisting of 8a and 8b is arranged in association. Then, the other end of the drawn wire rope 4 is guided above the counterweight 6 through this pulley group, and fixed to the ceiling portion of the underground space 5a at the position, so that the width of the door body 2 is increased.
  • a counterweight 6 having a slightly narrow width is suspended.
  • the first fixed pulley 7a is in the retracted portion of the wire rope 4 in the underground space 5a
  • the second fixed pulley 7b is in the ceiling portion of the underground space 5a above the suspension position of the counterweight 6.
  • first movable pulley 8a is rotatably attached to the lower end of the push-up rod 9 that moves up and down between the first constant pulley 7a and the second constant pulley 7b.
  • the second movable pulley 8 b is attached to the counterweight 6.
  • the push-up rod 9 moves in the direction of the distal end 2b and the proximal end 2a of the door body 2 in a lying state, and the upper and lower guide rollers 9a, It is regulated by 9b. Further, the movement of the push-up rod 9 in the width direction of the door body 2 is regulated by the upper and lower side rollers 9c and 9d. Further, the vertical movement of the push-up rod 9 is restricted by an upper limit stopper 9e and a lower limit stopper 9f, and a push-up roller 9g is attached to the upper end.
  • the floating-type flap gate 1 according to the present invention having the above-described effects exhibits the following effects when the door body 2 stands up and when the door body 2 falls down.
  • the turning force in the lying direction acting on the door body 2 and the turning force in the standing direction acting on the door body 2 turn in the lying direction while balancing.
  • the turning force acting on the door 2 at this time is the tension Ft generated on the wire rope 4 by the weight Fm of the door 2 and the counterweight 6.
  • the turning force in the standing direction that acts on the door body 2 is the hydraulic pressure Fw that acts on the submerged portion of the back surface 2 d of the door body 2. Due to the fall of the door body 2, the turning force in the fall direction due to the weight Fm of the door body 2 is increased.
  • the lodging action is decelerated by the turning force in the standing direction.
  • the length in the height direction of the door body 2 is L
  • the thickness of the door body 2 is D
  • the position where the push-up rod 9 acts ascending force Is Lp
  • the upper limit stroke St of the vertical movement of the push-up rod 9 can be obtained by the following equation (1).
  • St (Lp ⁇ D ⁇ sin ⁇ ) tan ⁇ + D (1 ⁇ cos ⁇ ) (1)
  • Fw Water pressure acting on the back surface 2d of the door body 2
  • Lw Center-of-gravity distance of water pressure acting on the back surface 2d of the door body 2 (distance from the rotating shaft 2c of the door body 2)
  • Fm Air weight of door body 2 Lm: Horizontal distance from the center of the rotation axis 2c of the door body 2 to the center of gravity ( ⁇ 1/2 ⁇ cos ⁇ )
  • Ft Air weight of door body 2 Lm: Horizontal distance from the center of the rotation axis 2c of the door body 2 to the center of gravity ( ⁇ 1/2 ⁇ cos ⁇ )
  • Ft Air weight of door body 2 Lm: Horizontal distance from the center of the rotation
  • the door body 2 starts to stand up when the water depth h at which the door body 2 starts to rise is 2/3 to 4/5 of the thickness D of the door body 2 in the lying state.
  • the push-up force Fp of the push-up rod 9 that can be obtained by the equation (4) is set. That is, the weight W of the counterweight 6 is set.
  • the standing direction generated by the water pressure Fw acting on the back surface 2d of the door body 2 when the water depth h at which the door body 2 starts to rise is 2/3 to 4/5 of the thickness D of the door body 2 in the lying state.
  • the weight W of the counterweight 6 is determined.
  • the door body 2 of the floating flap gate 1 of the present invention is not limited to a long span, and may be a short span.
  • the installation positions of the first and second constant pulleys 7a and 7b and the first and second movable pulleys 8a and 8b, the shape and layout of the counterweight 6, and the push-up rod 9 are increased as the counterweight 6 is raised and lowered. If it can raise / lower, it is not restricted to the installation position and layout of an Example.
  • the number and layout of the compression springs 10 are not limited to those described in the embodiment as long as the compression spring 10 functions as a cushion at the limit of the standing of the door body 2. Moreover, if it has the same effect
  • the member which supports the load at the time of standing is provided separately without supporting the load at the time of standing of the door body 2 only with the wire rope 4 like an Example, the required intensity

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Special Wing (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The present invention enables installation of a gate body with a long span when an above-ground structure cannot be disposed in the middle portion in the width direction of the gate body. Provided is a floating body-type flap gate 1 in which, when water is flowing in, a distal end side 2b of a gate body 2 is swingably raised with a rotation shaft 2c of the base end side 2a serving as a fulcrum. One end of a wire rope 4 is affixed to the back surface 2d of the gate body 2 in a fallen state. An underground space 5a is formed at the distal end portion side of the gate body 2 in a storage space 5 that stores the fallen gate body 2, and first and second fixed pulleys 7a, 7b and first and second movable pulleys 8a, 8b are arranged in the underground space 5a. The other end of the wire rope 4 guided via this group of pulleys is affixed at the ceiling part of this underground peace 5a. By the rise and fall of a counterweight 6 to which each second movable pulley 8b is attached, a push-up rod 9 to which each first movable pulley 8a is attached is raised and lowered, whereby the distal-end side of the gate body 2 is pushed up at the initial stage of raising and a sudden drop is inhibited at the final stage of falling, while by the tension acting on the wire rope 4 shock absorption at the final stage of raising and water-level tracking at the initial stage of falling are performed.

Description

浮体式フラップゲートFloating flap gate
　本発明は、開口の広い建物・地下空間、陸閘門・滑走路の端部或いは護岸・堤防のように、景観上、常時は嵩上げのできない或いは嵩上げをしたくない箇所に増水した水が流れ込まないように、扉体を浮上させて水の流入を阻止する浮体式フラップゲートに関するものである。 The present invention does not allow the increased water to flow into places that cannot be raised or do not want to be raised at all times, such as buildings with wide openings, underground spaces, end of land locks, runways, revetments, embankments, etc. As described above, the present invention relates to a floating flap gate that floats a door body and prevents the inflow of water.
　増水時に、増水した水が建物や地下空間に流れ込まないようにするため、例えば特許文献１，２には、流入しようとする水の浮力を利用して扉体を浮上させ、防波堤や防潮壁の開口部を遮断する浮体式フラップゲートが開示されている。 In order to prevent the increased water from flowing into the building or underground space at the time of the water increase, for example, Patent Documents 1 and 2 disclose that the door body is lifted using the buoyancy of the water to be introduced, and the breakwater and tide wall A floating flap gate that blocks an opening is disclosed.
　特許文献１，２で開示された浮体式フラップゲートは、扉体の開閉補助機構を備えている。この開閉補助機構は、流入初期に扉体の浮上動作が遅れて生活空間や地下空間へ越流することがなく、また、水位低下時にも倒伏がし難くならず、かつ急激に倒伏することもないようにするものである。 The floating-type flap gate disclosed in Patent Documents 1 and 2 includes a door body opening / closing assist mechanism. This opening / closing assist mechanism does not cause the door body to move up early in the inflow and overflow into the living space or underground space, and it does not easily fall over when the water level drops, and may fall down suddenly. It is something to prevent.
　特許文献１，２で開示された扉体の前記開閉補助機構は、ロープの一端を扉体の先端部に、ロープの他端は定滑車を介してカウンタウエイト又はばねに取付けている。その際、扉体の起立又は倒伏途中でカウンタウエイトが最下点又はばねが自然長となるように前記定滑車を設置している。 In the open / close assist mechanism of the door disclosed in Patent Documents 1 and 2, one end of the rope is attached to the tip of the door, and the other end of the rope is attached to a counterweight or a spring via a fixed pulley. In that case, the said fixed pulley is installed so that a counterweight may become the lowest point or a spring may become natural length in the middle of standing or lying down of a door body.
　ところで、特許文献１では、扉体の前記開閉補助機構は、倒伏した扉体の側部に設置された戸当りの内部に設けられている。また、特許文献２では、扉体の前記開閉補助機構は、倒伏した扉体の先端面両側のロープ取付け部と相対する位置に設けた収納体の内部に設けられている。 By the way, in Patent Document 1, the opening / closing auxiliary mechanism of the door body is provided inside a door stop installed on the side portion of the fallen door body. Moreover, in patent document 2, the said opening / closing auxiliary | assistance mechanism of a door body is provided in the inside of the storage body provided in the position facing the rope attachment part of the front end surface both sides of the fallen door body.
　つまり、特許文献１，２で開示された扉体の前記開閉補助機構は、何れも扉体の両側部から扉体の開閉を補助するものである。この場合、扉体の幅（径間）が長くなると扉体の開閉を補助することが困難になる。 That is, the opening / closing assist mechanism of the door disclosed in Patent Documents 1 and 2 assists the opening / closing of the door from both sides of the door. In this case, it becomes difficult to assist opening and closing of the door body when the width (diameter) of the door body becomes long.
　従って、特許文献１，２で開示された扉体の開閉補助機構を設置する場合、径間には限界があり、径間が長くなると扉体の幅方向中間部にも戸当りや収納体等の地上構造物を設ける必要がある。 Therefore, when installing the door body opening / closing assist mechanism disclosed in Patent Documents 1 and 2, there is a limit between the spans. It is necessary to provide a ground structure.
　以上の理由により、扉体の幅方向中間部に地上構造物を設けることができない、或いは扉体の幅方向中間部に地上構造物を設けたくない用途においては、特許文献１，２で開示された扉体の開閉補助機構では対応することができない。 For the reasons described above, in applications where a ground structure cannot be provided in the widthwise intermediate portion of the door body or where it is not desired to provide a ground structure in the widthwise intermediate portion of the door body, it is disclosed in Patent Documents 1 and 2. The door opening / closing assist mechanism cannot be used.
特開２０１２－２４１４４９号公報JP 2012-241449 A 特開２０１４－１１８７７４号公報JP 2014-118774 A
　本発明が解決しようとする問題点は、浮体式フラップゲートの扉体側部の地上構造物に設ける開閉補助機構の場合、扉体の幅方向中間部に地上構造物を設けることができない場合は対応することができないという点である。 The problem to be solved by the present invention is to cope with the case where the ground structure cannot be provided at the intermediate portion in the width direction of the door body in the case of the opening / closing assist mechanism provided in the ground structure on the door body side portion of the floating flap gate. Is that you can't.
　本発明は、浮体式フラップゲートの扉体の開閉補助機構を、滑走路の端部のように径間が長く、その中間部に地上構造物を設けることができない場合であっても設置できるようにすることを目的としてなされたものである。 In the present invention, the opening / closing assist mechanism for the door of the floating flap gate can be installed even when the span is long like the end of the runway and a ground structure cannot be provided in the middle. It was made for the purpose of making it.
　本発明は、増水時に、増水した水の流入を阻止するため、前記流入する水の方向に高さ方向の平面内で扉体の先端側が基端側の回転軸を支点とする起立揺動を可能とした浮体式フラップゲートであって、以下の構成の扉体の開閉補助機構を設けたことが最も主要な特徴である。 According to the present invention, in order to prevent the inflow of the increased water at the time of the increase in water, the front end side of the door body in the plane in the height direction in the direction of the inflowing water is oscillated with the rotation axis on the base end side as a fulcrum. The main feature of this floating-type flap gate is that it is provided with a door body opening / closing assist mechanism having the following configuration.
　すなわち、本発明の扉体の開閉補助機構は、倒伏状態の扉体の裏面にロープの一端を固定し、ロープの他端を、倒伏した扉体を格納する格納空間の、前記扉体の先端部側に形成した地下スペースの天井部に固定する。そして、地下スペースの内部に第１，２の定滑車と第１，２の動滑車を配置し、この滑車群で前記ロープの他端を案内する。この構成により、前記ロープを案内する第２の動滑車を取り付けたカウンタウエイトの昇降により、第１の動滑車を取り付けたプッシュアップロッドを昇降させて起立初期の扉体の先端側の押し上げと倒伏終期の急激な倒伏の抑制を行う。また、前記ロープに作用する張力により、起立終期の衝撃吸収と倒伏初期の水位追従を行う。 That is, the opening / closing assist mechanism for the door body of the present invention fixes one end of the rope to the back surface of the fallen door body, and the other end of the rope at the tip of the door body in the storage space for storing the fallen door body It is fixed to the ceiling of the underground space formed on the side. Then, the first and second fixed pulleys and the first and second movable pulleys are arranged inside the underground space, and the other end of the rope is guided by this pulley group. With this configuration, the push-up rod attached with the first moving pulley is moved up and down by raising and lowering the counterweight attached with the second moving pulley for guiding the rope, and the front end side of the door body is pushed up and lying down. Suppresses sudden lodging at the end. Further, the tension acting on the rope performs shock absorption at the end of standing and water level tracking at the initial stage of lodging.
　上記の本発明では、扉体の開閉補助機構を、倒伏した扉体を格納する格納空間の、扉体の先端部側に形成した地下スペース内に設置する。従って、滑走路の端部のように径間が長く、その中間部に地上構造物を設けることができない場合であっても浮体式フラップゲートを設置することができる。 In the present invention described above, the door body opening / closing assist mechanism is installed in the underground space formed on the front end side of the door body in the storage space for storing the fallen door body. Therefore, the floating flap gate can be installed even when the span is long like the end portion of the runway and the ground structure cannot be provided at the intermediate portion.
　本発明では、扉体の開閉補助機構により、扉体の起立初期の起立補助、起立終期の衝撃吸収、倒伏初期の水位追従、倒伏終期の倒伏抑制が可能になる。従って、流入初期の越流防止や起立完了時の衝撃を緩和できると共に、倒伏初期には水位ヘの追従性が良くなり、倒伏完了前の急激な倒伏がなくなる。 In the present invention, the door body opening / closing assist mechanism enables standing assistance at the initial stage of standing up the door, absorbing shock at the end of standing, tracking the water level at the initial stage of lodging, and suppressing the lodging at the end of lodging. Accordingly, overflow prevention at the beginning of inflow and impact at the time of completion of standing can be mitigated, followability to the water level is improved in the initial stage of lodging, and sudden lodging before the completion of lodging is eliminated.
　また、本発明では、扉体の開閉補助機構を、倒伏した扉体を格納する格納空間の、扉体の先端部側に形成した地下スペース内に設置している。従って、径間が長い扉体の中間部に地上構造物を設けることができない場合であっても設置することができる。 Further, in the present invention, the door body opening / closing assist mechanism is installed in the underground space formed on the front end side of the door body in the storage space for storing the fallen door body. Therefore, even if it is a case where a ground structure cannot be provided in the intermediate part of a door with a long span, it can install.
本発明の浮体式フラップゲートの概略構成図で、（ａ）は側面から見た図、（ｂ）は正面から見た図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the floating type flap gate of this invention, (a) is the figure seen from the side surface, (b) is the figure seen from the front. 本発明の浮体式フラップゲートを平面から見た概略構成図である。It is the schematic block diagram which looked at the floating-type flap gate of this invention from the plane. 扉体の開閉補助機構を構成する滑車群の第１の動滑車を支持するプッシュアップロッドを説明する図で、（ａ）は側面から見た図、（ｂ）は正面から見た図である。It is a figure explaining the push-up rod which supports the 1st moving pulley of the pulley group which comprises the opening / closing assist mechanism of a door body, (a) is the figure seen from the side, (b) is the figure seen from the front. . 起立初期における扉体の開閉補助機構について説明する図で、（ａ）は側面から見た図、（ｂ）は正面から見た図である。It is a figure explaining the opening-and-closing assist mechanism of the door body in the initial stage of standing, (a) is the figure seen from the side, (b) is the figure seen from the front. 起立中期における図４と同様の図である。FIG. 5 is a view similar to FIG. 4 in the mid-rise period. 起立終期における図４と同様の図である。FIG. 5 is a view similar to FIG. 4 at the end of standing. 倒伏初期における図４と同様の図である。It is a figure similar to FIG. 4 in the initial stage of lodging. 倒伏中期における図４と同様の図である。It is a figure similar to FIG. 4 in the middle period of lodging. 倒伏終期における図４と同様の図である。FIG. 5 is a view similar to FIG. 4 at the end of lodging. 扉体の開閉補助機構を構成する滑車群の第１の動滑車を支持するプッシュロッドの上限ストロークの設定について説明する図である。It is a figure explaining the setting of the upper limit stroke of the push rod which supports the 1st moving pulley of the pulley group which comprises the opening / closing assist mechanism of a door body. 扉体の開閉補助機構を構成するカウンタウエイトの重量の設定について説明する図である。It is a figure explaining the setting of the weight of the counterweight which comprises the opening / closing assist mechanism of a door body.
　本発明の目的は、径間が長い扉体の中間部に地上構造物を設けることができない場合であっても径間が長い扉体を設置できるようにすることである。そして、本発明は、前記目的を、扉体の開閉補助機構を、倒伏した扉体を格納する格納空間の、扉体の先端部側に形成した地下スペース内に設置することで実現した。 An object of the present invention is to enable a door having a long span to be installed even when a ground structure cannot be provided at an intermediate portion of the door having a long span. And this invention implement | achieved the said objective by installing the opening / closing assist mechanism of a door body in the underground space formed in the front-end | tip part side of the door body of the storage space which stores the fallen door body.
　本発明を実施するための形態を、図１～図１１を用いて詳細に説明する。
　図１～図３は本発明の浮体式フラップゲートの概略構成を示した図である。 A mode for carrying out the present invention will be described in detail with reference to FIGS.
1 to 3 are diagrams showing a schematic configuration of a floating flap gate of the present invention.
　図１～図３において、１は例えば防波堤や防潮壁に設けた開口部の路面rsに設置される本発明の浮体式フラップゲートである。この浮体式フラップゲート１は、海洋（或いは河川）から生活空間や地下空間に水ｗが流入しようとする際、流入する水ｗの水圧を利用して、基端側２ａの回転軸２ｃを支点として扉体２の先端側２ｂを起立揺動させて前記開口部を水密状態に遮断するものである。 1 to 3, reference numeral 1 denotes a floating flap gate of the present invention installed on a road surface rs of an opening provided in a breakwater or a tide wall, for example. The floating flap gate 1 uses the water pressure of the flowing water w as a fulcrum to support the rotating shaft 2c on the base end side 2a when the water w tries to flow into the living space or underground space from the ocean (or river). As described above, the front end side 2b of the door body 2 is swung upright to block the opening in a watertight state.
　本発明の浮体式フラップゲート１は、図１（ａ）に示すように、倒伏状態にある扉体２の裏面２ｄにワイヤロープ４の一端を取付けている。この扉体２の裏面２ｄへのワイヤロープ４の取付け例として、図１及び図２に示した例では、扉体２の裏面２ｄの例えば扉体２の高さ方向中間部の両側にブラケット３を取付け、これらブラケット３にワイヤロープ４の一端を取付けている。このワイヤロープ４の他端は、倒伏した扉体２を格納する格納空間５の、扉体２の先端側２ｂに形成した地下スペース５ａに引き込まれている。 The floating flap gate 1 of the present invention has one end of a wire rope 4 attached to the back surface 2d of the door body 2 in a lying state, as shown in FIG. As an example of attaching the wire rope 4 to the rear surface 2d of the door body 2, in the example shown in FIGS. 1 and 2, the bracket 3 is provided on both sides of the rear surface 2d of the door body 2, for example, in the middle in the height direction of the door body 2. And one end of a wire rope 4 is attached to these brackets 3. The other end of the wire rope 4 is drawn into an underground space 5 a formed on the distal end side 2 b of the door body 2 in the storage space 5 for storing the fallen door body 2.
　前記地下スペース５ａの内部には、例えばカウンタウエイト６と、カウンタウエイト６の上面の両側に設けた圧縮ばね１０と、第１、第２の定滑車７ａ，７ｂ及び第１、第２の動滑車８ａ，８ｂからなる滑車群が関連配置されている。そして、前記引き込まれたワイヤロープ４の他端を、この滑車群を介してカウンタウエイト６の上方に案内し、当該位置の地下スペース５ａの天井部に固定することで、扉体２の幅より若干狭い幅のカウンタウエイト６を吊り下げている。 Inside the underground space 5a, for example, a counterweight 6, compression springs 10 provided on both sides of the upper surface of the counterweight 6, first and second constant pulleys 7a and 7b, and first and second movable pulleys. A pulley group consisting of 8a and 8b is arranged in association. Then, the other end of the drawn wire rope 4 is guided above the counterweight 6 through this pulley group, and fixed to the ceiling portion of the underground space 5a at the position, so that the width of the door body 2 is increased. A counterweight 6 having a slightly narrow width is suspended.
　前記滑車群のうち第１の定滑車７ａは、地下スペース５ａのワイヤロープ４の引込み部に、第２の定滑車７ｂは、カウンタウエイト６の吊下げ位置上部の地下スペース５ａの天井部に、それぞれ設けている。 Of the pulley group, the first fixed pulley 7a is in the retracted portion of the wire rope 4 in the underground space 5a, and the second fixed pulley 7b is in the ceiling portion of the underground space 5a above the suspension position of the counterweight 6. Each is provided.
　一方、第１の動滑車８ａは、前記第１の定滑車７ａと第２の定滑車７ｂの間で昇降移動するプッシュアップロッド９の下端に回転自在に取り付けている。また、第２の動滑車８ｂは、カウンタウエイト６に取り付けている。 On the other hand, the first movable pulley 8a is rotatably attached to the lower end of the push-up rod 9 that moves up and down between the first constant pulley 7a and the second constant pulley 7b. The second movable pulley 8 b is attached to the counterweight 6.
　なお、前記プッシュアップロッド９の昇降移動時、倒伏状態の扉体２の先端側２ｂの方向及び基端側２ａの方向への前記プッシュアップロッド９の移動は、上部と下部のガイドローラ９ａ，９ｂによって規制されている。また、扉体２の幅方向への前記プッシュアップロッド９の移動は、上下のサイドローラ９ｃ、９ｄによって規制されている。また、このプッシュアップロッド９の上下方向の昇降移動は、上限ストッパ９ｅと下限ストッパ９ｆによって規制され、上端には押し上げローラ９ｇを取り付けている。 When the push-up rod 9 is moved up and down, the push-up rod 9 moves in the direction of the distal end 2b and the proximal end 2a of the door body 2 in a lying state, and the upper and lower guide rollers 9a, It is regulated by 9b. Further, the movement of the push-up rod 9 in the width direction of the door body 2 is regulated by the upper and lower side rollers 9c and 9d. Further, the vertical movement of the push-up rod 9 is restricted by an upper limit stopper 9e and a lower limit stopper 9f, and a push-up roller 9g is attached to the upper end.
　地下スペース５ａの内部に、第１、第２の定滑車７ａ，７ｂ、第１、第２の動滑車８ａ，８ｂ、カウンタウエイト６、プッシュアップロッド９を関連配置した扉体２の開閉補助機構を備えた本発明の浮体式フラップゲート１は、扉体２の起立時、及び扉体２の倒伏時は、以下に説明する作用を奏する。 An opening / closing assist mechanism for the door body 2 in which the first and second fixed pulleys 7a and 7b, the first and second movable pulleys 8a and 8b, the counterweight 6 and the push-up rod 9 are disposed in the underground space 5a. The floating-type flap gate 1 according to the present invention having the above-described effects exhibits the following effects when the door body 2 stands up and when the door body 2 falls down.
（扉体２の起立初期：図４）
　浸水が所定の水位に達し、扉体２に作用する起立方向の旋回力が扉体２の重量Ｆｍによる倒伏方向の旋回力より大きくなると扉体２は浮上を開始する。この時の扉体２に作用する起立方向の旋回力は、扉体２に作用する浮力と、カウンタウエイト６により作用しているプッシュアップロッド９の押し上げ力を加えたものである。 (Initial standing of door 2: Fig. 4)
When the inundation reaches a predetermined water level and the turning force in the standing direction acting on the door body 2 becomes larger than the turning force in the falling direction due to the weight Fm of the door body 2, the door body 2 starts to rise. The turning force in the standing direction acting on the door body 2 at this time is the sum of the buoyancy acting on the door body 2 and the push-up rod 9 pushing force acting on the counterweight 6.
（扉体２の起立中期：図５）
　プッシュアップロッド９が上昇限に到達した後は、扉体２に作用する起立方向の旋回力が扉体２に作用する倒伏方向の旋回力より大きくなって、扉体２は起立方向に旋回して起立する。この時の扉体２に作用する起立方向の旋回力は、扉体２の裏面２ｄの没水部に作用する水圧Ｆｗである。また、扉体２に作用する倒伏方向の旋回力は、扉体２の重量Ｆｍとカウンタウエイト６によってワイヤロープ４に発生する張力Ｆｔである。 (Middle standing phase of door body 2: Fig. 5)
After the push-up rod 9 reaches the rising limit, the turning force in the standing direction acting on the door body 2 becomes larger than the turning force in the lying direction acting on the door body 2, and the door body 2 turns in the standing direction. Stand up. The turning force in the standing direction that acts on the door body 2 at this time is the hydraulic pressure Fw that acts on the submerged portion of the back surface 2d of the door body 2. In addition, the turning force in the lying direction acting on the door body 2 is the tension Ft generated in the wire rope 4 by the weight Fm of the door body 2 and the counterweight 6.
（扉体２の起立終期：図６）
　扉体２が起立限の近くまで起立した時には、カウンタウエイト６は上昇限位置近傍まで移動しており、圧縮ばね１０が圧縮される。従って、カウンタウエイト６の重量Ｗと圧縮ばね１０の圧縮力によってワイヤロープ４に発生する張力Ｆｔが、扉体２の起立方向の旋回の制動力として倒伏方向に作用する。 (Termination end of door body 2: Fig. 6)
When the door body 2 stands up to the vicinity of the standing limit, the counterweight 6 moves to the vicinity of the rising limit position, and the compression spring 10 is compressed. Accordingly, the tension Ft generated in the wire rope 4 by the weight W of the counterweight 6 and the compression force of the compression spring 10 acts in the lying down direction as a braking force for turning the door body 2 in the standing direction.
（扉体２の倒伏初期：図７）
　水位が低下し、扉体２に作用する起立方向の旋回力が減少すると、扉体２に作用する倒伏方向の旋回力と釣り合う位置まで扉体２は倒伏方向に旋回する。この時の扉体２に作用する起立方向の旋回力は、扉体２の裏面２ｄの没水部に作用する水圧Ｆｗである。また、扉体２に作用する倒伏方向の旋回力は、扉体２の重量Ｆｍとカウンタウエイト６によってワイヤロープ４に発生する張力Ｆｔである。なお、起立上限付近では、ワイヤロープ４に発生する張力Ｆｔには圧縮ばね力も加わる。 (Initial lodging of door 2: Fig. 7)
When the water level is lowered and the turning force in the standing direction acting on the door body 2 is reduced, the door body 2 is swung in the lying direction to a position balanced with the turning force in the lying direction acting on the door body 2. The turning force in the standing direction that acts on the door body 2 at this time is the hydraulic pressure Fw that acts on the submerged portion of the back surface 2d of the door body 2. In addition, the turning force in the lying direction acting on the door body 2 is the tension Ft generated in the wire rope 4 by the weight Fm of the door body 2 and the counterweight 6. In the vicinity of the upper limit of standing up, a compression spring force is also applied to the tension Ft generated in the wire rope 4.
（扉体２の倒伏中期：図８）
　扉体２に作用する倒伏方向の旋回力と扉体２に作用する起立方向の旋回力がバランスしながら倒伏方向に旋回する。この時の扉体２に作用する倒伏方向の旋回力は、扉体２の重量Ｆｍとカウンタウエイト６によってワイヤロープ４に発生する張力Ｆｔである。また、扉体２に作用する起立方向の旋回力は、扉体２の裏面２ｄの没水部に作用する水圧Ｆｗである。扉体２の倒伏により、扉体２の重量Ｆｍによる倒伏方向の旋回力が増大するが、扉体２の裏面２ｄにプッシュアップロッド９が当接した後は、プッシュアップロッド９の押し上げ力による起立方向の旋回力により倒伏動作は減速する。 (The middle period of lodging of door 2: Fig. 8)
The turning force in the lying direction acting on the door body 2 and the turning force in the standing direction acting on the door body 2 turn in the lying direction while balancing. The turning force acting on the door 2 at this time is the tension Ft generated on the wire rope 4 by the weight Fm of the door 2 and the counterweight 6. Moreover, the turning force in the standing direction that acts on the door body 2 is the hydraulic pressure Fw that acts on the submerged portion of the back surface 2 d of the door body 2. Due to the fall of the door body 2, the turning force in the fall direction due to the weight Fm of the door body 2 is increased. The lodging action is decelerated by the turning force in the standing direction.
（扉体２の倒伏終期：図９）
　水位が低下し、扉体２の裏面２ｄの没水部に作用する水圧Ｆｗによる浮上力がなくなると、扉体２の重量Ｆｍによる倒伏方向の旋回力により扉体２は格納空間５に着床する。この時、カウンタウエイト６によるプッシュアップロッド９の押し上げ力は、扉体２の重量Ｆｍによる倒伏方向の旋回力より大きくなるほどの起立方向の旋回力はないが、プッシュアップロッド９の押し上げ力により着床時の衝撃が緩和される。 (End of lodging of door 2: Fig. 9)
When the water level drops and the levitation force due to the water pressure Fw acting on the submerged portion 2d of the back surface 2d of the door body 2 disappears, the door body 2 is landed in the storage space 5 by the turning force in the falling direction due to the weight Fm of the door body 2. To do. At this time, the pushing force of the push-up rod 9 by the counterweight 6 does not have a turning force in the standing direction that is larger than the turning force in the lying direction due to the weight Fm of the door body 2, but it is applied by the pushing force of the push-up rod 9. The impact on the floor is alleviated.
（プッシュアップロッド９の昇降移動の上限ストロークＳｔの設定：図１０）
　起立初期、倒伏終期における上記作用のため、プッシュアップロッド９の昇降移動の上限ストロークＳｔ、すなわち当該上限ストロークＳｔとなる扉体２の起立角度θは、以下のように設定する。 (Setting of the upper limit stroke St of the vertical movement of the push-up rod 9: FIG. 10)
Due to the above-described action at the initial stage of standing up and at the end stage of falling down, the upper limit stroke St of the vertical movement of the push-up rod 9, that is, the standing angle θ of the door body 2 that becomes the upper limit stroke St is set as follows.
　図１０に示すように、扉体２の高さ方向の長さをＬ、扉体２の厚さをＤ、プッシュアップロッド９による上昇力の作用位置（扉体２の回転軸２ｃからの距離）をＬｐとした場合、プッシュアップロッド９の昇降移動の上限ストロークＳｔは、下記(1)式で求めることができる。
　Ｓｔ＝（Ｌｐ－Ｄ・sinθ）tanθ＋Ｄ（１－cosθ）…(1) As shown in FIG. 10, the length in the height direction of the door body 2 is L, the thickness of the door body 2 is D, the position where the push-up rod 9 acts ascending force (distance from the rotation axis 2c of the door body 2) ) Is Lp, the upper limit stroke St of the vertical movement of the push-up rod 9 can be obtained by the following equation (1).
St = (Lp−D · sinθ) tanθ + D (1−cosθ) (1)
　水深ｈがプッシュアップロッド９の上限ストロークＳｔにおける扉体２の先端標高Ｈ（＝Ｌ・sinθ＋Ｄ）の４／５の時に、下記(2)式のように、扉体２の裏面２ｄに作用する水圧Ｆｗにより発生する起立方向の旋回力（＝Ｆｗ×Ｌｗ）が、扉体２の重量Ｆｍ及びワイヤロープ４の張力Ｆｔにより発生する倒伏方向の旋回力（＝Ｆｍ×Ｌｍ＋Ｆｔ×Ｌｔ）よりも大きくなるようにする。 When the water depth h is 4/5 of the tip altitude H (= L · sin θ + D) of the door body 2 at the upper limit stroke St of the push-up rod 9, it acts on the back surface 2d of the door body 2 as shown in the following equation (2). The turning force (= Fw × Lw) in the standing direction generated by the water pressure Fw is larger than the turning force (= Fm × Lm + Ft × Lt) in the lying direction generated by the weight Fm of the door body 2 and the tension Ft of the wire rope 4. To be.
　Ｆｗ×Ｌｗ（＝Ｐｈ1×Ｌ×Ｂ×Ｌ/２＋１/２・（Ｐｈ2－Ｐｈ1）×Ｌ×Ｂ×Ｌ/３）
　　≧Ｆｍ×Ｌｍ＋Ｆｔ×Ｌｔ…(2)
　但し、Ｆｗ：扉体２の裏面２ｄに作用する水圧
　　　　Ｌｗ：扉体２の裏面２ｄに作用する水圧力の重心距離
　　　　　　　（扉体２の回転軸２ｃからの距離）
　　　　Ｐｈ1：扉体２の裏面２ｄの先端の水深ｈ1（＝Ｄ・cosθ－Ｈ/５）の作用水圧
　　　　Ｐｈ2：扉体２の裏面２ｄの基端の水深ｈ2（＝ｈ1＋Ｌ・sinθ）の作用水圧
　　　　Ｆｍ：扉体２の空中重量
　　　　Ｌｍ：扉体２の回転軸２ｃの中心から重心までの水平距離（≒１/２・cosθ）
　　　　Ｆｔ：ワイヤロープ４の張力（＝Ｗ/２×α、α：滑車などの機械効率）
　　　　Ｌｔ：ワイヤロープ４の引張り位置までの距離
　　　　　　　（扉体２の回転軸２ｃの中心から引張方向への垂直距離）
　　　　Ｂ：扉体２の幅 Fw × Lw (= Ph 1 × L × B × L / 2 + 1/2 · (Ph 2 −Ph 1 ) × L × B × L / 3)
≧ Fm × Lm + Ft × Lt (2)
However, Fw: Water pressure acting on the back surface 2d of the door body 2 Lw: Center-of-gravity distance of water pressure acting on the back surface 2d of the door body 2 (distance from the rotating shaft 2c of the door body 2)
Ph 1 : Working water pressure at the water depth h 1 (= D · cos θ−H / 5) at the tip of the back surface 2d of the door body 2 Ph 2 : Water depth h 2 at the base end of the back surface 2d of the door body 2 (= h 1 + L · Working pressure of sinθ) Fm: Air weight of door body 2 Lm: Horizontal distance from the center of the rotation axis 2c of the door body 2 to the center of gravity (≈ 1/2 · cos θ)
Ft: tension of the wire rope 4 (= W / 2 × α, α: mechanical efficiency of the pulley, etc.)
Lt: distance to the tension position of the wire rope 4 (vertical distance from the center of the rotating shaft 2c of the door body 2 to the tension direction)
B: Width of door body 2
（カウンタウエイト６の重量Ｗの設定：図１１）
　図１１に示すように、扉体２が浮上を開始する水深をｈとした場合、扉体２が浮上を開始する水深ｈにおける扉体に作用する浮力Ｆｗは、下記(3)式で求めることができる。 (Setting of weight W of counterweight 6: FIG. 11)
As shown in FIG. 11, when the water depth at which the door body 2 starts to rise is h, the buoyancy Fw acting on the door body at the water depth h at which the door body 2 starts to rise is obtained by the following equation (3). Can do.
　Ｆｗ＝Ｐｈ×Ｌ×Ｂ…(3) Fw = Ph × L × B ... (3)
　倒伏時に上記作用を奏するため、扉体２が浮上を開始する水深ｈが倒伏状態の扉体２の厚さＤの２/３～４/５の時に扉体２の起立が開始するよう、下記(4)式で求めることができるプッシュアップロッド９の押し上げ力Ｆｐを設定する。すなわちカウンタウエイト６の重量Ｗを設定する。 In order to exhibit the above action when lying down, the door body 2 starts to stand up when the water depth h at which the door body 2 starts to rise is 2/3 to 4/5 of the thickness D of the door body 2 in the lying state. The push-up force Fp of the push-up rod 9 that can be obtained by the equation (4) is set. That is, the weight W of the counterweight 6 is set.
　Ｆｐ＝Ｗ×α－ｗ2…(4)
　但し、ｗ2：プッシュアップロッド９の重量 Fp = W × α−w 2 (4)
W 2 : Weight of push-up rod 9
　そして、扉体２が浮上を開始する水深ｈが倒伏状態の扉体２の厚さＤの２/３～４/５の時の扉体２の裏面２ｄに作用する水圧Ｆｗにより発生する起立方向の旋回力及びプッシュアップロッド９の押し上げ力Ｆｐによる起立方向の旋回力（＝Ｆｗ×Ｌｗ＋Ｆｐ×Ｌｐ）と、扉体２の重量Ｆｍにより発生する倒伏方向の旋回力（＝Ｆｍ×Ｌｍ）が等しくなるように、カウンタウエイト６の重量Ｗを決定する。 The standing direction generated by the water pressure Fw acting on the back surface 2d of the door body 2 when the water depth h at which the door body 2 starts to rise is 2/3 to 4/5 of the thickness D of the door body 2 in the lying state. The turning force in the standing direction (= Fw × Lw + Fp × Lp) due to the turning force of the push-up rod 9 and the pushing-up force Fp of the push-up rod 9 is equal to the turning force in the lying direction (= Fm × Lm) generated by the weight Fm of the door body 2. Thus, the weight W of the counterweight 6 is determined.
　本発明は、前記の例に限るものではなく、各請求項に記載の技術的思想の範疇であれば、適宜実施の形態を変更しても良いことは言うまでもない。 The present invention is not limited to the above-described examples, and it is needless to say that the embodiments may be changed as appropriate as long as they fall within the scope of the technical idea described in each claim.
　例えば、本発明の浮体式フラップゲート１の扉体２は径間の長いものに限らず、径間の短いものであってもよい。 For example, the door body 2 of the floating flap gate 1 of the present invention is not limited to a long span, and may be a short span.
　また、第１、第２の定滑車７ａ，７ｂや第１、第２の動滑車８ａ，８ｂの設置位置やカウンタウエイト６の形状やレイアウトは、カウンタウエイト６の昇降に伴ってプッシュアップロッド９を昇降できるものであれば、実施例の設置位置やレイアウトに限らない。 The installation positions of the first and second constant pulleys 7a and 7b and the first and second movable pulleys 8a and 8b, the shape and layout of the counterweight 6, and the push-up rod 9 are increased as the counterweight 6 is raised and lowered. If it can raise / lower, it is not restricted to the installation position and layout of an Example.
　また、圧縮ばね１０は扉体２の起立限でクッションの役割を果たすものであれば、設置する個数やレイアウトは実施例で説明したものに限らない。また、同様の作用を奏するものであれば、圧縮ばね１０に限らない。また、圧縮ばね１０は設置しなくてもよい。 Further, the number and layout of the compression springs 10 are not limited to those described in the embodiment as long as the compression spring 10 functions as a cushion at the limit of the standing of the door body 2. Moreover, if it has the same effect | action, it will not restrict to the compression spring 10. Further, the compression spring 10 may not be installed.
　また、実施例のように、扉体２の起立時の荷重をワイヤロープ４だけで支持せず、起立時の荷重を支持する部材を別途設ける場合は、ワイヤロープ４の必要強度を下げることができる。 Moreover, when the member which supports the load at the time of standing is provided separately without supporting the load at the time of standing of the door body 2 only with the wire rope 4 like an Example, the required intensity | strength of the wire rope 4 can be reduced. it can.
　１　　浮体式フラップゲート
　２　　扉体
　２ａ　　基端側
　２ｂ　　先端側
　２ｃ　　回転軸
　２ｄ　　裏面
　４　　ワイヤロープ
　５　　格納空間
　５ａ　　地下スペース
　６　　カウンタウエイト
　７ａ　　第１の定滑車
　７ｂ　　第２の定滑車
　８ａ　　第１の動滑車
　８ｂ　　第２の動滑車
　９　　プッシュアップロッド
　１０　　圧縮ばね DESCRIPTION OF SYMBOLS 1 Floating type flap gate 2 Door body 2a Base end side 2b Front end side 2c Rotating shaft 2d Back surface 4 Wire rope 5 Storage space 5a Underground space 6 Counterweight 7a 1st fixed pulley 7b 2nd fixed pulley 8a 1st moving pulley 8b Second movable pulley 9 Push-up rod 10 Compression spring

Claims (3)

  1. 　増水時に、増水した水の流入を阻止するため、前記流入する水の方向に高さ方向の平面内で扉体の先端側が基端側の回転軸を支点とする起立揺動が可能なように構成した浮体式フラップゲートであって、
    　倒伏状態の扉体の裏面に一端を固定したロープの他端を、倒伏した扉体を格納する格納空間の、前記扉体の先端部側に形成した地下スペースの内部に配置した第１，２の定滑車と第１，２の動滑車を介して案内して前記地下スペースの天井部に固定し、前記ロープを案内する第２の動滑車を取り付けたカウンタウエイトの昇降により、第１の動滑車を取り付けたプッシュアップロッドを昇降させて起立初期の扉体の先端側の押し上げと倒伏終期の急激な倒伏の抑制を行うとともに、前記ロープに作用する張力により、起立終期の衝撃吸収と倒伏初期の水位追従を行う扉体の開閉補助機構を有することを特徴とする浮体式フラップゲート。     In order to prevent the inflow of increased water at the time of water increase, the front end side of the door body can be erected with the rotation axis on the base end side as a fulcrum in a plane in the height direction in the direction of the inflow water. A floating flap gate constructed,
    First and second, the other end of the rope having one end fixed to the back surface of the fallen door body is disposed inside the underground space formed on the distal end side of the door body in the storage space for storing the fallen door body. The first movable pulley and the first and second movable pulleys are guided and fixed to the ceiling portion of the underground space, and the first moving pulley is moved up and down by attaching a second movable pulley for guiding the rope. The push-up rod attached with the pulley is moved up and down to push up the front end of the door body at the beginning of standing and to suppress sudden lodging at the end of lodging, and by the tension acting on the rope, shock absorption at the end of standing and the initial lodging A floating flap gate having a door body opening / closing assist mechanism for following the water level.
  2. 　前記第１，２の定滑車のうち、第１の定滑車は、前記地下スペースへの前記ロープの引込み部に設け、第２の定滑車は、前記カウンタウエイトの吊下げ位置に設けることを特徴とする請求の範囲第１項に記載の浮体式フラップゲート。 Of the first and second fixed pulleys, the first fixed pulley is provided at a portion where the rope is pulled into the underground space, and the second constant pulley is provided at a suspended position of the counterweight. The floating flap gate according to claim 1.
  3. 　前記カウンタウエイトの上面に圧縮ばねを設けたことを特徴とする請求の範囲第１項又は第２項に記載の浮体式フラップゲート。 The floating flap gate according to claim 1 or 2, wherein a compression spring is provided on an upper surface of the counterweight.
PCT/JP2016/056444 2015-04-28 2016-03-02 Floating body type flap gate WO2016174919A1 (en)

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JP2015091293A JP6461699B2 (en) 2015-04-28 2015-04-28 Floating flap gate
JP2015-091293 2015-04-28

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Publication number Priority date Publication date Assignee Title
CN113152392A (en) * 2021-04-29 2021-07-23 李圣 Hydraulic engineering construction is with automatic formula gate that opens and shuts

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018173400A1 (en) * 2017-03-24 2018-09-27 日立造船株式会社 Flap gate
JP7161984B2 (en) * 2019-10-31 2022-10-27 日立造船株式会社 Mooring device for undulating gate type breakwater

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JPH01176134U (en) * 1988-05-31 1989-12-15
JP2010133095A (en) * 2008-12-02 2010-06-17 Hitachi Zosen Corp Door body mooring device of derricking gate breakwater
WO2011065086A1 (en) * 2009-11-24 2011-06-03 日立造船株式会社 Mooring device for flap gate type breakwater
JP2012241449A (en) * 2011-05-20 2012-12-10 Hitachi Zosen Corp Floating body type flap gate
JP2014118774A (en) * 2012-12-18 2014-06-30 Hitachi Zosen Corp Floating body type flap gate

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Publication number Priority date Publication date Assignee Title
JPH01176134U (en) * 1988-05-31 1989-12-15
JP2010133095A (en) * 2008-12-02 2010-06-17 Hitachi Zosen Corp Door body mooring device of derricking gate breakwater
WO2011065086A1 (en) * 2009-11-24 2011-06-03 日立造船株式会社 Mooring device for flap gate type breakwater
JP2012241449A (en) * 2011-05-20 2012-12-10 Hitachi Zosen Corp Floating body type flap gate
JP2014118774A (en) * 2012-12-18 2014-06-30 Hitachi Zosen Corp Floating body type flap gate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113152392A (en) * 2021-04-29 2021-07-23 李圣 Hydraulic engineering construction is with automatic formula gate that opens and shuts

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