JP3488653B2 - Floating automatic hoisting gate with forced operation device - Google Patents
Floating automatic hoisting gate with forced operation deviceInfo
- Publication number
- JP3488653B2 JP3488653B2 JP03920699A JP3920699A JP3488653B2 JP 3488653 B2 JP3488653 B2 JP 3488653B2 JP 03920699 A JP03920699 A JP 03920699A JP 3920699 A JP3920699 A JP 3920699A JP 3488653 B2 JP3488653 B2 JP 3488653B2
- Authority
- JP
- Japan
- Prior art keywords
- door
- arm
- gate
- door body
- pin
- 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.)
- Expired - Lifetime
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、河川の樋門・樋管
に本河川水の逆流防止を目的として設置されるゲート設
備の中、河川水位により自動・無動力で作動する浮体式
起伏型ゲート設備において、堆積した泥土等による閉作
動障害、または開閉作動途中の塵芥等の噛み込みによる
ゲートの不完全閉塞が発生した場合、強制的にゲートを
開閉作動させて障害を排除する装置を備え付けた浮体式
起伏型ゲート設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating undulating type of gate equipment installed in a gutter / gutter pipe of a river for the purpose of preventing the backflow of the river water, which operates automatically and unpowered by the river water level. In the gate facility, if a closing operation failure due to accumulated mud or incomplete closing of the gate due to biting of dust etc. during the opening and closing operation, a device to forcibly open and close the gate and eliminate the obstacle is installed. Floating type undulating gate equipment.
【０００２】[0002]
【従来の技術】河川堤防の樋門・樋管には、河川増水時
（洪水時等）、堤防内または支川に河川水が逆流しない
ように昇降式のゲート設備が一般的に設けられてきた
が、近年、ゲートの開閉を河川水位の状況に応じて自動
的、かつ無動力で適宜に行える浮体式起伏型ゲートの設
置が行われるようになってきた。2. Description of the Related Art In general, a gutter / gutter pipe on a river embankment is provided with an elevating gate facility so that the river water does not flow backward into the embankment or a tributary when the river is flooded (when a flood occurs). However, in recent years, a floating body type undulating gate has been installed which can automatically open and close the gate automatically and unpowered according to the river water level.
【０００３】このゲート型式は、下部ヒンジ方式の浮体
式扉体が、上下流水位の変動で自在に起立・倒伏作動で
きる構造で、下流水を上流側に逆流させないことを目的
として、感潮河川、または干拓堤防内側潮遊池等で広く
採用されてきたものである。This gate type has a structure in which a floating body type door body of a lower hinge type can freely stand and fall due to fluctuations in upstream and downstream water levels, and is designed to prevent downstream water from flowing backward to the tidal river. Or, it has been widely adopted in tidal ponds inside reclamation banks.
【０００４】図１６に樋門・樋管等の暗渠形式の出口を
開放・閉塞するゲート設備として設置された従来の浮体
式起伏ゲート設備を示す。図１６（ａ）は閉作動中の状
態を示す側断面図であり、図１６（ｂ）は全閉状態を示
す側断面図である。FIG. 16 shows a conventional floating type undulating gate facility installed as a gate facility for opening / closing an underdrain type outlet such as a gutter or a gutter pipe. 16A is a side sectional view showing a state during the closing operation, and FIG. 16B is a side sectional view showing a fully closed state.
【０００５】この図の中で、４０は浮体式起伏型扉体、
４１は扉体回転支承金物、４２は側部戸当金物である。
止水部は下部戸当金物と扉体下部間に取付けられ扉体起
伏作動に追従して変形可能な下部止水ゴム４３、扉体の
側部に取付けられ扉体起伏作動に従い側部戸当金物を摺
動する側部ゴム４４、並びに上部戸当金物に取付けられ
た上部水密ゴム４５によって構成され、全閉状態時には
浮体式起伏型扉体４０が下流側水位によって起立し、扉
体スキンプレートが上部水密ゴム４５に圧着し、側部水
密ゴム４４と連続して止水する構造となっている。In the figure, 40 is a floating type undulating door body,
Reference numeral 41 is a door body rotating support, and 42 is a side door fitting.
The water stop part is attached between the lower door fitting and the lower part of the door body, and the lower water stop rubber 43 that can be deformed following the door body undulation operation is attached to the side part of the door body. It is composed of a side rubber 44 that slides the metal fittings and an upper watertight rubber 45 attached to the upper door fitting, and in a fully closed state, the floating body type undulating door body 40 stands up by the water level on the downstream side, and a door body skin plate. Is pressure-bonded to the upper watertight rubber 45 and has a structure in which water is stopped continuously with the side watertight rubber 44.
【０００６】[0006]
【発明が解決しようとする課題】ところが、この浮体式
起伏型ゲート設備を樋門・樋管等の暗渠形式の出口を開
放・閉塞するゲート設備として設置した場合、本川河川
の水位が高い場合には比較的大きな水圧が扉体に作用
し、従って上部水密ゴムに過大な圧縮力が作用すること
で過度な変形が発生し、その結果ゴム材質の劣化が早く
なってしまう問題点がある。However, when the floating type undulating gate equipment is installed as gate equipment for opening and closing the outlet of the underdrain type such as a gutter gate or a gutter pipe, when the water level of the main river is high Has a problem in that a relatively large water pressure acts on the door body, and thus an excessive compression force acts on the upper watertight rubber, which causes excessive deformation, resulting in rapid deterioration of the rubber material.
【０００７】更に、浮体式起伏型扉体が上下流水位によ
って自動作動途中に上流側から流下した浮遊塵芥等が浮
体式扉体と上部戸当金物（上部水密部）との間に噛み込
み、完全な閉塞状態を妨害することが予想される。Further, the floating body type undulating door body is automatically operated by the upstream and downstream water levels, and floating dust particles and the like flowing down from the upstream side are caught between the floating body type door body and the upper door fitting (upper watertight portion), It is expected to interfere with the complete occlusion.
【０００８】または、扉体倒伏状態の時に扉体上に泥土
等が堆積し、その重さにより扉体の浮力による初期起立
作動が妨害され、河川増水時に円滑な扉体起立作動の障
害となる等が予想される。[0008] Alternatively, when the door body is in a collapsed state, mud or the like is accumulated on the door body, and its weight hinders the initial standing up operation due to the buoyancy of the door body, which hinders the smooth upright operation of the door body during flooding of the river. Etc. are expected.
【０００９】樋門の不完全閉塞状態が発生すると、増水
した本川河川水が堤防内に逆流し、宅地または農地に湛
水被害が発生する。更には堤防の洗掘・決壊という重大
な災害に発展する危険性がある。When the incompletely closed state of the gutter occurs, the increased river water in the main river flows back into the levee, causing flood damage on the residential land or farmland. Furthermore, there is a risk of developing into a serious disaster such as scouring / collapse of an embankment.
【００１０】本発明は、全閉時、扉体上部水密ゴムに水
密に必要以上の変形を与えず、また、扉体が自動閉作動
時に塵芥等を噛み込んだとき、並びに堆積泥土等により
初期自動起立作動が妨害されているとき、遠隔にてゲー
トを強制操作し、作動障害を排除することが可能な強制
作動装置付浮体式起伏型ゲートを提供することを目的と
する。According to the present invention, when fully closed, the upper watertight rubber of the door body is not watertightly deformed, and when the door body is automatically closed, dust or the like is caught in the door, and the initial mist is caused by accumulated mud. It is an object of the present invention to provide a floating type undulating gate with a forcible actuating device, which is capable of remotely forcibly operating the gate when the automatic standing up operation is disturbed and eliminating the operational obstacle.
【００１１】即ち、扉体全閉時には水圧を扉体が下部支
点と上部ピン部を支点とした支持梁として対抗する構造
とし、上部水密ゴムは水密上必要な変形以上の変形をさ
せない構造とする。That is, when the door body is fully closed, the door body has a structure that opposes the water pressure as a support beam with the lower fulcrum and the upper pin portion as fulcrums, and the upper watertight rubber does not deform more than necessary for watertightness. .
【００１２】扉体の自動閉作動時に浮遊塵芥等が扉体と
上部戸当金物（上部水密部）との間に噛み込んだ場合、
扉体を強制的に開作動させることにより塵芥等を低水位
側に洗流排除させる。When floating dust particles are caught between the door and the upper door fitting (upper watertight portion) during the automatic closing operation of the door,
By forcibly opening the door, dust and other debris is washed away on the low water level side.
【００１３】扉体上に堆積泥土等があり、扉体の浮力に
よる初期起立作動が妨害されている場合は、扉体を強制
的に一定角度起立させ、堆積泥土等の影響を緩和させる
ことにより、扉体の浮力による自動閉作動を補助する。When there is accumulated mud on the door and the initial erection operation due to the buoyancy of the door is obstructed, the door is forced to stand up to a certain angle to mitigate the influence of the accumulated mud. , Assist the automatic closing operation by the buoyancy of the door.
【００１４】[0014]
【課題を解決するための手段】前記課題を解決するた
め、本発明の強制作動装置付浮体式自動起伏ゲート設備
は、河川堤防に設ける樋門に下部ヒンジ方式で設置さ
れ、河川水位の変動によって無動力、かつ自動的に樋門
の通水断面を開放、または閉塞するよう起立・倒伏作動
する浮体式起伏型扉体からなる河川水逆流防止用のゲー
ト設備において、側部戸当金物上部位置で水路側に張出
したピンを左右に１個ずつ設置し、扉体全閉時において
扉体頂部左右に設けた支圧金物を支持する構造とするこ
とで、全閉時に扉体にかかる全水圧を、扉体本体が、扉
体の起伏回転支承部を一支点、扉体頂部支圧金物部を支
持するピン部を他支点とした両端支持梁として支える構
造とする。In order to solve the above-mentioned problems, the floating type automatic undulating gate equipment with a forced actuation device of the present invention is installed in a gutter provided on a river embankment by a lower hinge system, and is adapted to change the river water level. In the gate equipment for river water backflow prevention, which consists of floating type undulating doors that stand up and down so as to automatically open or close the water passage of the gutter without power, the side door metal fittings upper position By installing one pin on each side of the waterway on the left and right, and supporting the pressure bearing metal provided on the left and right of the top of the door when the door is fully closed, the total water pressure applied to the door when fully closed The door body has a structure in which the undulating rotation bearing portion of the door body is used as one fulcrum and the pin portion for supporting the top support metal member of the door body is used as another fulcrum for supporting both ends.
【００１５】前記側部戸当金物上部位置で扉体頂部支圧
金物部を支持するピンの一つが、戸当金物内部に設置さ
れた回転アームに取付け支持される構造とし、戸当金物
内部に設置された油圧シリンダーで回転アームを回転作
動させることによりピンを円弧状に可動させる機構と
し、扉体が起立し全閉に近い状態にある時、ピンを可動
させ扉体頂部支圧金物部を開放側に押すことによって扉
体を強制的に開方向に作動させる。One of the pins for supporting the top support member of the door body at the upper position of the side door fitting is constructed so as to be attached to and supported by a rotary arm installed inside the door fitting, and A mechanism that moves the pin in an arc shape by rotating the rotating arm with the installed hydraulic cylinder.When the door stands upright and is almost fully closed, the pin is moved and the pressure support metal part at the top of the door is moved. By pushing to the open side, the door is forcibly operated in the opening direction.
【００１６】側部戸当金物内部に、上部回転アームと下
部回転アームとを上・下に配置し、連結棒またはワイヤ
ーロープで連結されたリンク機構とし、上部回転アーム
には支持ピンを取付け水路側に張出し可動ピンとし、下
部アームには駆動軸を設けこれを水路側に張出し、ここ
に扉体を持上げるための押上げアームを設置し、かつ戸
当金物内部に上部回転アームを回転作動させる油圧シリ
ンダーを設置する。油圧シリンダーによって上部回転ア
ームを回転作動させることにより、上部の可動ピンを円
弧状に作動させると同時に下部の押上げアームを回転作
動させ、扉体が起立状態にある時は上部可動ピンで扉体
頂部に設置した支圧金物部を押し、ゲート開方向に押し
下げ作動させ、扉体が倒伏状態にある時は扉体の側部を
押上げアームで閉方向に持上げ作動させる。Inside the side door fitting, an upper rotary arm and a lower rotary arm are arranged above and below to form a link mechanism connected by a connecting rod or a wire rope, and a support pin is attached to the upper rotary arm. Side is a movable pin, the lower arm is provided with a drive shaft, and this is extended to the waterway side, a push-up arm for lifting the door is installed here, and the upper rotating arm is rotated inside the door fitting. Install a hydraulic cylinder. When the upper rotary arm is rotated by the hydraulic cylinder, the upper movable pin is operated in an arc shape, and at the same time, the lower push-up arm is rotated, and when the door body is in the upright state, the upper movable pin is used to move the door body. Push the pressure-bearing metal part installed on the top and push it down in the gate opening direction. When the door is lying down, the side of the door is lifted by the lifting arm in the closing direction.
【００１７】油圧シリンダーには、油圧回路開放時によ
り、通常時のゲート自動作動に支障を及ぼさない様、シ
リンダーロッドを元の位置に自動復元させるためのスプ
リング機能を設ける。The hydraulic cylinder is provided with a spring function for automatically restoring the cylinder rod to its original position so as not to interfere with the automatic gate operation at normal times when the hydraulic circuit is opened.
【００１８】[0018]
【発明の実施の形態】＜実施例１＞以下本発明の実施例
１について、図面に示す実施例を参照しながら説明す
る。BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> A first embodiment of the present invention will be described below with reference to the embodiments shown in the drawings.
【００１９】図１、図２は本発明のフローティングゲー
トの概略構成を示す樋門通水部の側断面図である。図１
はゲート全開状態、図２はゲート全閉状態を示す。各図
とも（ａ）は側断面図、（ｂ）は下流側から見た正面図
である。図３、図４はゲート全開状態の詳細を示すもの
で、図３は側断面図、図４は下流側から見た正面図（作
動装置部については断面図）である。FIG. 1 and FIG. 2 are side cross-sectional views of a gutter water passage showing a schematic structure of a floating gate of the present invention. Figure 1
Shows the gate fully opened, and FIG. 2 shows the gate fully closed. In each drawing, (a) is a side sectional view and (b) is a front view seen from the downstream side. 3 and 4 show the details of the fully opened state of the gate, FIG. 3 is a side sectional view, and FIG. 4 is a front view seen from the downstream side (a sectional view of the operating device portion).
【００２０】これらの図において、１は樋門通水路、２
は浮体式起伏型扉体、３は側部戸当金物、４は扉体起伏
回転支承部、５は上部張出ピン（可動ピン）、６は上部
張出ピン（固定ピン）、７は油圧操作装置、８は作動装
置室カバー、９は回転アーム、１０は油圧シリンダー、
１１は底部戸当金物、１２は上部水密金物である。扉体
２と底部戸当金物１１との間には底部水密ゴム１３、扉
体２の両側部には側部水密ゴム１４が、扉体２の頂部に
は上部水密ゴム１５が連続性をもって取付けられてい
る。また、側部戸当金物の上部位置には上部張出ピン
（可動ピン）５が円弧状に回動可能なように円弧状孔１
６が設けられている。In these figures, 1 is the Himon waterway, and 2 is
Is a floating type undulating door body, 3 is a side door fitting, 4 is a door body undulating rotary support, 5 is an upper projecting pin (movable pin), 6 is an upper projecting pin (fixed pin), and 7 is hydraulic pressure. An operating device, 8 is an actuator chamber cover, 9 is a rotating arm, 10 is a hydraulic cylinder,
Reference numeral 11 is a bottom door fitting, and 12 is an upper watertight fitting. A bottom watertight rubber 13 is installed between the door 2 and the bottom door fitting 11, side watertight rubbers 14 are installed on both sides of the door 2, and an upper watertight rubber 15 is installed on the top of the door 2 in a continuous manner. Has been. Further, at the upper position of the side door fitting, an arc-shaped hole 1 is formed so that an upper projecting pin (movable pin) 5 can be rotated in an arc shape.
6 is provided.
【００２１】図５はゲート全閉状態の時の上部水密部及
び張出ピン支持部を示す。上部水密ゴム１５は上部水密
金物１２と圧着し約３ｍｍ程度つぶれている。浮体式起
伏型扉体２の左右端縦桁上部をゲート頂部より突出し支
圧部とし、ここを上部張出ピン５、６によって支持され
ている。（従って、上部水密ゴム１５はこれ以上つぶれ
ないようになっている。）FIG. 5 shows the upper watertight portion and the protruding pin support portion when the gate is fully closed. The upper watertight rubber 15 is pressed against the upper watertight metal fitting 12 and is crushed by about 3 mm. The upper portions of the vertical girders on the left and right ends of the floating body type undulating door body 2 are projected from the gate top portion to serve as a bearing portion, and the bearing portions are supported by the upper protruding pins 5 and 6. (Thus, the upper watertight rubber 15 is designed so as not to be crushed any more.)
【００２２】図６はゲート全閉時（上流側水圧がない場
合）の水圧荷重図である。外水位ＷＬ１によって浮体式
起伏型扉体２にかかる全水圧は台形荷重Ｐ１と浮力荷重
Ｐ２の合力として単純化検討できる。本構造は、この荷
重を扉体起伏回転支承部４と上部張出ピン５、６を両支
点とし、それぞれ支点反力Ｒ１、Ｒ２として扉体本体を
両端支持梁とみなしている。FIG. 6 is a water pressure load diagram when the gate is fully closed (when there is no water pressure on the upstream side). The total water pressure applied to the floating body type undulating door body 2 by the outside water level WL1 can be simplified and considered as the resultant force of the trapezoidal load P1 and the buoyancy load P2. In this structure, the door body oscillating rotation support portion 4 and the upper protruding pins 5 and 6 are used as both fulcrums for this load, and the door body is regarded as both-end support beams as fulcrum reaction forces R1 and R2, respectively.
【００２３】図７、図８は回転アーム部並びに油圧シリ
ンダー部を示す。各図とも（ａ）は下流側から見た正面
図側断面図、（ｂ）は側断面図である。7 and 8 show the rotating arm portion and the hydraulic cylinder portion. In each drawing, (a) is a front sectional view seen from the downstream side, and (b) is a side sectional view.
【００２４】これらの図において、１７は回転アーム支
承金物、１８は回転アームストッパー、１９は油圧シリ
ンダー支持金物である。回転アーム支承金物１７は回転
アーム９が回転自在に作動可能な構造とし、回転アーム
ストッパーは全閉位置で可動ピン５から回転アーム９を
通じて伝わる荷重を確実に土木構造物へ伝達するよう取
付けられている。また、油圧シリンダー支持金物１９
は、油圧シリンダー１０が伸縮時に揺動可能な構造とな
っている。In these figures, 17 is a rotary arm support metal, 18 is a rotary arm stopper, and 19 is a hydraulic cylinder support metal. The rotary arm support 17 has a structure in which the rotary arm 9 is rotatably operable, and the rotary arm stopper is attached so as to reliably transmit the load transmitted from the movable pin 5 through the rotary arm 9 to the civil engineering structure in the fully closed position. There is. Also, the hydraulic cylinder support hardware 19
Has a structure in which the hydraulic cylinder 10 can swing when expanded and contracted.
【００２５】図７は通常時の状態を示す。油圧シリンダ
ーは縮状態で、回転アーム９は回転アームストッパー１
８により決められた位置に保持されている。FIG. 7 shows a normal state. The hydraulic cylinder is in the contracted state, and the rotary arm 9 is the rotary arm stopper 1
It is held at the position determined by 8.
【００２６】図８は油圧シリンダー１０を伸操作し回転
アーム９を回転作動させた状態を示す。上部張出ピン５
が回転アーム９の作動により下流側へ円弧作動を行い、
扉体端縦桁上部を開方向に押し下げ、扉体を開作動させ
る。FIG. 8 shows a state in which the hydraulic cylinder 10 is extended and the rotary arm 9 is rotated. Upper overhang pin 5
Performs an arc operation to the downstream side by the operation of the rotating arm 9,
Push down the upper part of the door end vertical girder in the opening direction to open the door.
【００２７】図９、図８はゲートの強制開作動状態を示
す。各図とも（ａ）は扉体２並びに回転アーム９・油圧
シリンダー１０部の側断面図、（ｂ）は扉体２並びに回
転アーム９・油圧シリンダー１０部の正面図である。9 and 8 show the forced opening operation state of the gate. In each drawing, (a) is a side sectional view of the door body 2 and the rotary arm 9 / hydraulic cylinder 10 part, and (b) is a front view of the door body 2 and the rotary arm 9 / hydraulic cylinder 10 part.
【００２８】図９は外水位ＷＬ１の水圧によって浮体式
起伏型扉体２が全閉状態にある。この時、回転アーム
９、上部張出ピン（可動ピン）５は図７に示す状態で浮
体式起伏型扉体２からの荷重を確実に支持している。In FIG. 9, the floating body type undulating door body 2 is in a fully closed state by the water pressure of the outer water level WL1. At this time, the rotating arm 9 and the upper projecting pin (movable pin) 5 reliably support the load from the floating body type undulating door body 2 in the state shown in FIG.
【００２９】図１０は油圧シリンダー１０を操作し、浮
体式起伏型扉体２を強制的に開作動させた状態を示す。
この時、回転アーム９、上部張出ピン（可動ピン）５は
図８に示す状態で浮体式起伏型扉体２からの水圧荷重を
支持しながら開方向に押し下げ作用している。FIG. 10 shows a state in which the hydraulic cylinder 10 is operated to forcibly open the floating body type undulating door 2.
At this time, the rotary arm 9 and the upper protruding pin (movable pin) 5 push down in the opening direction while supporting the hydraulic load from the floating body type undulating door body 2 in the state shown in FIG.
【００３０】浮体式起伏型扉体２の自動閉作動途中に塵
芥等が上部水密金物１２との間に挟まり、全閉状態が妨
げられた時、図１０に示す浮体式起伏型扉体２を強制的
に開作動させることで塵芥等を挟み込む力を一時的に開
放し、同時に発生する外水位ＷＬ１から内水位ＷＬ２ヘ
の水流により塵芥等を内水位側へ洗流させ、その後油圧
シリンダーを縮み作動させ、図７に示す通常状態に戻す
ことで図９に示す浮体式起伏型扉体２の全閉状態にし、
障害を排除する。When dust and the like are caught between the upper watertight metal fitting 12 and the fully closed state during the automatic closing operation of the floating body type undulating door body 2, the floating body type undulating door body 2 shown in FIG. By forcibly opening it, the force to pinch dust etc. is temporarily released, and at the same time the water flow from the outer water level WL1 to the inner water level WL2 flushes the dust etc. to the inner water level side, then shrinks the hydraulic cylinder. By operating and returning to the normal state shown in FIG. 7, the floating body type undulating door body 2 shown in FIG. 9 is fully closed,
Eliminate obstacles.
【００３１】＜実施例２＞本発明の実施例２について、
図面に示す実施例を参照しながら説明する。<Embodiment 2> Regarding Embodiment 2 of the present invention,
Description will be given with reference to the embodiments shown in the drawings.
【００３２】図１１、図１２に実施形態２の強制作動装
置概要図を示す。各図とも（ａ）は水路中央位置での側
面図、（ｂ）は下流側から見て作動装置部での正面断面
図、（ｃ）は作動装置リンク機構部を示す側断面図であ
る。11 and 12 show schematic diagrams of the forced actuation device of the second embodiment. In each drawing, (a) is a side view at the central position of the water channel, (b) is a front cross-sectional view of the actuating device section as viewed from the downstream side, and (c) is a side cross-sectional view showing the actuating device link mechanism part.
【００３３】これらの図において、２０は押上げアー
ム、２１は上部回転アーム、２２は下部回転アーム、２
３は下部駆動軸、２４はワイヤーロープ、２５は上部回
転アーム支承金物、２６は下部回転アーム支承金物、２
７は水路壁内貫通孔である。押上げアーム２０は下部回
転アーム２１によって回転する駆動軸２３の水路側張出
端に強固に取付けられ、下部回転アーム２２によって回
転作動する。上部回転アーム２１には可動ピン５が取付
けられており、また、上部回転アーム２１と下部回転ア
ーム２２が連動して反対回転が可能なように２４のワイ
ヤーロープによって連結されている。In these figures, 20 is a push-up arm, 21 is an upper rotary arm, 22 is a lower rotary arm, and 2 is a lower rotary arm.
3 is a lower drive shaft, 24 is a wire rope, 25 is an upper rotary arm support, 26 is a lower rotary arm support, 2
7 is a through hole in the water channel wall. The push-up arm 20 is firmly attached to the waterway side projecting end of the drive shaft 23 that is rotated by the lower rotary arm 21, and is rotated by the lower rotary arm 22 . A movable pin 5 is attached to the upper rotary arm 21, and the upper rotary arm 21 and the lower rotary arm 22 are interlocked and connected by a wire rope 24 so that they can rotate in opposite directions.
【００３４】これらは油圧シリンダー１０によって回転
作動する上部回転アーム２１が、ワイヤーロープ２４に
よって下部回転アーム２２を作動させ、下部駆動軸２３
を介して押上げアーム２０を回転作動させる機構となっ
ている。上部回転アーム支承金物２５、下部回転アーム
支承金物２６は各回転アームが回転自在に作動できる構
造となっている。また、水路壁内貫通孔２７はワイヤー
ロープ２４が上部回転アーム２１の回転作動を下部回転
アーム２２に確実に伝達可能なように十分な広さをもっ
て設置されている。The upper rotary arm 21 is rotated by the hydraulic cylinder 10, the lower rotary arm 22 is operated by the wire rope 24, and the lower drive shaft 23 is operated.
It is a mechanism for rotationally operating the push-up arm 20 via. The upper rotary arm support 25 and the lower rotary arm support 26 have a structure in which each rotary arm can be rotatably operated. Further, the through hole 27 in the water channel wall is installed with a sufficient width so that the wire rope 24 can surely transmit the rotation operation of the upper rotary arm 21 to the lower rotary arm 22.
【００３５】図１３、図１４は本開閉装置による浮体式
起伏型扉体２の作動状況を示す。各図とも（ａ）は側面
図、（ｂ）は下流側から見て正面図（作動装置部分は断
面図）である。13 and 14 show the operating state of the floating body type undulating door body 2 by this opening / closing device. In each drawing, (a) is a side view, and (b) is a front view (a sectional view of an operating device portion) as viewed from the downstream side.
【００３６】これらの図において、２８は浮体式起伏型
扉体２の側板に取付けられたピンである。In these drawings, 28 is a pin attached to the side plate of the floating body type undulating door body 2.
【００３７】図１３は浮体式起伏型扉体２が完全倒伏し
ている状態を示す。可動ピン５、押上げアーム２０は通
常状態にある。FIG. 13 shows a state in which the floating body type undulating door body 2 is completely laid down. The movable pin 5 and the push-up arm 20 are in the normal state.
【００３８】図１４は油圧シリンダーを伸操作し、押上
げアーム２０を回転作動させ、扉体取付けピン２８を押
上げ、これにより浮体式起伏型扉体２を持上げ作動させ
ている状態を示す。FIG. 14 shows a state in which the hydraulic cylinder is extended, the push-up arm 20 is rotated, and the door mounting pin 28 is pushed up, thereby lifting and actuating the floating body type undulating door 2.
【００３９】浮体式起伏型扉体２が倒伏している状態の
時、扉体上部に泥土等が堆積し、その重量によって河川
水増水時に浮体式起伏型扉体２の初期作動が妨害された
場合、図１４に示す操作によって浮体式起伏型扉体２を
強制的に閉作動させ、堆積泥土を浮体式起伏型扉体２の
下部に移動させ重量影響を緩和し、その後の自動閉作動
を円滑に行わせる。When the floating body type undulating door body 2 is lying down, mud and the like are accumulated on the upper portion of the door body, and the weight of the mud soil hinders the initial operation of the floating body type undulating door body 2 when the river water increases. In this case, the floating type undulating door body 2 is forcibly closed by the operation shown in FIG. 14, the accumulated mud is moved to the lower part of the floating type undulating door body 2 to mitigate the influence of weight, and the subsequent automatic closing operation is performed. Let it run smoothly.
【００４０】＜実施例３＞実施例１並びに２に使用する
油圧シリンダーの自動復元機構について、図面に示す実
施例を参照しながら説明する。<Embodiment 3> The automatic restoring mechanism of the hydraulic cylinder used in Embodiments 1 and 2 will be described with reference to the embodiment shown in the drawings.
【００４１】図１５は油圧シリンダー並びに油圧回路の
概要図を示す。（ａ）は通常の状態、（ｂ）は伸操作時
の状態を示す。FIG. 15 shows a schematic diagram of the hydraulic cylinder and the hydraulic circuit. (A) shows a normal state, (b) shows a state at the time of extension operation.
【００４２】この図の中で３０はシリンダーロッド、３
１はシリンダーチューブ、３２は油圧シリンダーに内蔵
された圧縮コイルバネ（スプリング）、３３は油圧ポン
プ、３４は操作レバーによって操作される３位置４接続
方向制御弁、３５はリリーフ弁、３６は油タンクであ
る。油圧シリンダーは両ロッドシリンダーとし、シリン
ダーロッド３０の動きによってシリンダーチューブ３１
のａ，ｂポートを流れる油量は常に同量としている。In this figure, 30 is a cylinder rod and 3 is
1 is a cylinder tube, 32 is a compression coil spring (spring) contained in a hydraulic cylinder, 33 is a hydraulic pump, 34 is a 3-position 4-connection directional control valve operated by an operating lever, 35 is a relief valve, and 36 is an oil tank. is there. The hydraulic cylinder is a double rod cylinder, and the movement of the cylinder rod 30 causes the cylinder tube 31 to move.
The amount of oil flowing through ports a and b is always the same.
【００４３】図１５（ａ）の状態は、３位置４接続方向
制御弁３４によってａ、ｂポートが連通しているため圧
縮コイルバネ３２によってシリンダーロッド３０は縮め
られている状態を示す。The state of FIG. 15 (a) shows a state in which the cylinder rod 30 is contracted by the compression coil spring 32 because the ports a and b communicate with each other by the 3-position 4-connection direction control valve 34.
【００４４】図１５（ｂ）の状態は、３位置４接続方向
制御弁３４を切替え、油圧ポンプ３３を操作し油タンク
からｂポートへ作動油を移動し、シリンダーロッド３０
を伸作動させている状態を示す。この時、圧縮コイルバ
ネはシリンダーロッドが作動した分圧縮される。In the state shown in FIG. 15B, the three-position four-connection control valve 34 is switched, the hydraulic pump 33 is operated to move the hydraulic oil from the oil tank to the port b, and the cylinder rod 30 is operated.
Shows a state in which the extension operation is performed. At this time, the compression coil spring is compressed by the operation of the cylinder rod.
【００４５】図１５（ｂ）の伸操作を完了させ、３位置
４接続方向制御弁３４を図１５（ａ）の状態に戻すこと
で、ａ、ｂポートが連通し作動油が移動可能となり、圧
縮コイルバネ３２の反発力によりシリンダーロッド３０
は縮方向へ押し戻され、自動的に伸操作前の状態に復元
される。By completing the extension operation of FIG. 15 (b) and returning the three-position / four-connection directional control valve 34 to the state of FIG. 15 (a), the a and b ports communicate with each other, and the hydraulic oil can move. Cylinder rod 30 due to the repulsive force of compression coil spring 32
Is pushed back in the contraction direction and automatically restored to the state before the stretching operation.
【００４６】この機構により、油圧シリンダーは伸操作
完了後、３位置４接続方向制御弁３４の操作のみで通常
状態に復元されるため、実施例１並びに２の強制作動装
置操作完了後、可動ピン５・押上げアーム２０は自動的
に通常状態に戻り、浮体式起伏型扉体２の自動開閉作動
の障害となることがない。With this mechanism, the hydraulic cylinder is restored to the normal state only by the operation of the three-position / four-connection directional control valve 34 after the completion of the extension operation. 5. The push-up arm 20 automatically returns to the normal state, and does not interfere with the automatic opening / closing operation of the floating body type undulating door body 2.
【００４７】[0047]
【発明の効果】以上説明したように、本発明によれば、
ゲートにかかる水圧荷重が大きくなっても上部水密ゴム
が必要量以上に変形せず、ゲートが塵芥等を噛み込んだ
場合には遠隔にてゲートを開操作し、ゲートを少し開く
ことで噛み込んだ塵芥等を低水位側に洗流させることが
可能で、また、倒伏したゲート上部に泥土等が堆積した
場合には遠隔にてゲートを閉操作しゲートを一定角度起
立可能とし、かつ強制操作完了後はゲートが自動的に閉
じることが可能な状態としたので、塵芥の噛み込み、ま
たは堆積泥土の障害が生じても任意操作により障害を排
除でき、ゲートの不完全閉塞による河川水の逆流を有効
に防止することができる。As described above, according to the present invention,
Even if the water pressure load on the gate becomes large, the upper watertight rubber does not deform more than necessary, and if the gate bites dust etc., open the gate remotely and bite it by opening the gate slightly. It is possible to wash away dust and debris to the low water side, and when mud etc. accumulates on the upper part of the collapsed gate, the gate can be remotely operated to raise the gate at a certain angle and forced operation. Since the gate can be closed automatically after the completion, even if dust is trapped or sediment mud is obstructed, the obstruction can be eliminated by any operation. Can be effectively prevented.
【図１】 本発明の浮体式自動起伏ゲートの樋門通水部
の開放時における概略を示すもので、（ａ）は側断面
図、（ｂ）は下流側から見た正面図である。1A and 1B are schematic views of a floating automatic undulation gate of the present invention when a gutter gate water passage is opened, in which FIG. 1A is a side sectional view and FIG. 1B is a front view seen from a downstream side.
【図２】 本発明の浮体式自動起伏ゲートの樋門通水部
の閉塞時における概略を示すもので、（ａ）は側断面
図、（ｂ）は下流側から見た正面図である。2A and 2B are schematic views of the floating automatic undulation gate according to the present invention when the water passage of the gutter is closed, where FIG. 2A is a side sectional view and FIG. 2B is a front view seen from the downstream side.
【図３】 本発明の浮体式自動起伏ゲートの樋門通水部
の開放時における詳細を示す側断面図である。FIG. 3 is a side sectional view showing details of the floating automatic undulation gate of the present invention when the gutter gate water passage portion is opened.
【図４】 本発明の浮体式自動起伏ゲートの樋門通水部
の開放時における詳細を示す下流側から見た正面図であ
る。（作動装置部については断面図である。）FIG. 4 is a front view seen from the downstream side showing the details of the floating automatic undulation gate of the present invention when the gutter gate water passage is opened. (The actuator unit is a sectional view.)
【図５】 ゲート全閉状態の時の上部水密部及び張出ピ
ン（可動）支持部を示す拡大図である。FIG. 5 is an enlarged view showing an upper watertight portion and an extension pin (movable) support portion when the gate is fully closed.
【図６】 ゲート全閉状態の水圧荷重図である。FIG. 6 is a hydraulic load diagram with the gate fully closed.
【図７】 回転アーム部分並びに油圧シリンダー部の通
常状態を示すもので、（ａ）は正面図、（ｂ）は側面図
である。7A and 7B show a normal state of a rotary arm portion and a hydraulic cylinder portion, wherein FIG. 7A is a front view and FIG. 7B is a side view.
【図８】 油圧シリンダーを伸操作し回転アームを回転
作動させた状態を示すもので、（ａ）は正面図、（ｂ）
は側面図である。8A and 8B show a state in which a hydraulic cylinder is extended and a rotary arm is rotationally operated. FIG. 8A is a front view, and FIG.
Is a side view.
【図９】 通常のゲート全閉状態、並びに作動装置部分
を示すもので、（ａ）は側面図、（ｂ）は正面図であ
る。9A and 9B are views showing a normal gate fully closed state and an actuator portion, in which FIG. 9A is a side view and FIG. 9B is a front view.
【図１０】 ゲートを強制的に開作動させた状態、並び
に作動装置部分を示すもので、（ａ）は側面図、（ｂ）
は正面図である10A and 10B show a state in which the gate is forcibly opened, and an actuator portion, in which FIG. 10A is a side view and FIG.
Is a front view
【図１１】 実施例２の作動装置・通常状態の概要を示
すもので、（ａ）は側面図、（ｂ）は正面断面図、
（ｃ）は作動装置リンク機構部を示す側断面図である。11A and 11B are diagrams showing an outline of an operating device and a normal state of Embodiment 2, (a) is a side view, (b) is a front sectional view,
(C) is a side sectional view showing an actuator link mechanism portion.
【図１２】 実施例２の作動装置・作動状態の概要を示
すもので、（ａ）は側面図、（ｂ）は正面断面図、
（ｃ）は作動装置リンク機構部を示す側断面図である。12A and 12B are views showing an outline of an operating device and an operating state of Embodiment 2, where FIG. 12A is a side view, FIG. 12B is a front sectional view,
(C) is a side sectional view showing an actuator link mechanism portion.
【図１３】 実施例２の作動装置が通常状態にあり、ゲ
ートが完全倒伏している状態を示すもので、（ａ）は概
要側面図、（ｂ）は正面図（作動装置部は断面図）であ
る。13A and 13B show a state in which the operating device according to the second embodiment is in a normal state and the gate is completely lying down. FIG. 13A is a schematic side view, and FIG. 13B is a front view (the operating device portion is a cross-sectional view). ).
【図１４】 実施例２の作動装置によってゲートを閉作
動させている状態を示すもので、（ａ）は概要側面図、
（ｂ）は正面図（作動装置部は断面図）である。FIG. 14 is a view showing a state in which a gate is closed by the actuating device according to the second embodiment, and (a) is a schematic side view,
(B) is a front view (actuator part is a sectional view).
【図１５】 油圧シリンダー及び油圧回路の概要図を示
すもので、（ａ）は通常の状態、（ｂ）は伸操作時の状
態を示す。15A and 15B are schematic diagrams of a hydraulic cylinder and a hydraulic circuit, in which FIG. 15A shows a normal state and FIG. 15B shows a state during a stretching operation.
【図１６】 従来技術の浮体式起伏型ゲート（フローテ
ィングゲート）の概要を示す側面図で、（ａ）中間起立
状態、（ｂ）は全閉状態を示す。FIG. 16 is a side view showing an outline of a floating body type undulating gate (floating gate) of the related art, in which (a) an intermediate standing state and (b) a fully closed state.
１ 樋門通水路、２ 浮体式起伏型扉体、３ 側部戸当
金物、４ 扉体起伏回転支承部、５ 可動ピン、６ 固
定ピン、７ 油圧操作装置、８ 作動装置室カバー、９
回転アーム、１０ 油圧シリンダー、１１ 底部戸当
金物、１２ 上部水密金物、１３ 底部水密ゴム、１４
側部水密ゴム、１５ 上部水密ゴム、１６ 側部戸当
金物円弧状孔、１７ 可動アーム支承金物、１８ 回転
アームストッパー、１９ 油圧シリンダー支持金物、２
０ 押上げアーム、２１ 上部回転アーム、２２ 下部
回転アーム、２３ 下部駆動軸、２４ ワイヤーロー
プ、２５ 上部回転アーム支承金物、２６ 下部回転ア
ーム支承金物、２７ 側壁内部貫通孔、２８ 扉体側部
ピン、３０ シリンダーロッド、３１ シリンダーチュ
ーブ、３２ 圧縮コイルバネ（スプリング）、３３ 油
圧ポンプ、３４ ３位置４接続方向制御弁、３５ リリ
ーフ弁、３６ 油タンク、４０ （従来技術の）浮体式
起伏型扉体、４１ 回転支承金物、４２ 側部戸当金
物、４３ 下部水密ゴム、４４ 側部水密ゴム、４５
上部水密ゴム、ＷＬ１ 本川側水位、ＷＬ２樋門上流側
水位、Ｐ１ 上下流水位差による水圧、Ｐ２ 扉体に作
用する浮力、Ｒ１ 扉体起伏回転支承部に発生する反
力、Ｒ２ 上部支点（可動ピン・固定ピン部）に発生す
る反力1 Himon waterway, 2 Floating type undulating door, 3 Side door fittings, 4 Door undulating rotary support, 5 Movable pin, 6 Fixed pin, 7 Hydraulic operating device, 8 Actuator chamber cover, 9
Rotating arm, 10 hydraulic cylinder, 11 bottom door fitting, 12 upper watertight metal, 13 bottom watertight rubber, 14
Side watertight rubber, 15 Top watertight rubber, 16 Side door fitting arcuate hole, 17 Movable arm support hardware, 18 Rotating arm stopper, 19 Hydraulic cylinder support hardware, 2
0 push-up arm, 21 upper rotation arm, 22 lower rotation arm, 23 lower drive shaft, 24 wire rope, 25 upper rotation arm support, 26 lower rotation arm support, 27 side wall internal through hole, 28 door side pin, 30 cylinder rod, 31 cylinder tube, 32 compression coil spring (spring), 33 hydraulic pump, 34 3 position 4 connection direction control valve, 35 relief valve, 36 oil tank, 40 (prior art) floating type undulating door body, 41 Rotary bearing hardware, 42 Side door fittings, 43 Lower watertight rubber, 44 Side watertight rubber, 45
Upper watertight rubber, WL1 main river side water level, WL2 gutter upstream water level, P1 water pressure due to upstream / downstream water level difference, buoyancy acting on P2 door body, reaction force generated on R1 door body up and down rotation bearing, R2 upper fulcrum ( Reaction force generated on movable pin / fixed pin)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡▲邉▼ 博史 建設省九州地方建設局 遠賀川工事事務 所 内 (72)発明者 藤井 道博 佐賀県佐賀市高木瀬西六丁目10番１号 株式会社協和製作所 内 (72)発明者 佐藤 政治 佐賀県佐賀市高木瀬西六丁目10番１号 株式会社協和製作所 内 (72)発明者 田原 義行 佐賀県佐賀市高木瀬西六丁目10番１号 株式会社協和製作所 内 (56)参考文献 特開 平６−108445（ＪＰ，Ａ) 特開 平10−252043（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02B 7/20 E02B 7/40 - 7/44 E02B 7/50 E02B 7/54 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Watanabe ▲ Hiroshi ▼ Ministry of Construction Kyushu Regional Construction Bureau Ongagawa Construction Office (72) Inventor Michihiro Fujii 6-10 Takagise Nishi, Saga City, Saga Prefecture Co., Ltd. Kyowa Plant (72) Inventor Sato Politics 6-10-1, Takagise Nishi, Saga City, Saga Prefecture Kyowa Plant Co., Ltd. (72) Inventor Yoshiyuki Tahara 6-10 Takagise Nishi, Saga City, Saga Prefecture Kyowa Plant Co., Ltd. (56) References JP-A-6-108445 (JP, A) JP-A-10-252043 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) E02B 7/20 E02B 7 / 40-7/44 E02B 7/50 E02B 7/54
Claims (4)
で設置され、河川水位の変動によって無動力、かつ自動
的に樋門の通水断面を開放、または閉塞するよう起立・
倒伏作動する浮体式起伏型扉体からなる河川水逆流防止
用のゲート設備において、 側部戸当金物上部位置で水路側に張出したピンを左右に
１個ずつ設置し、扉体全閉時において扉体頂部左右に設
けた支圧金物を支持する構造とすることで、全閉時に扉
体にかかる全水圧を、扉体本体が、扉体の起伏回転支承
部を一支点、扉体頂部支圧金物部を支持するピン部を他
支点とした両端支持梁として支える構造とした強制作動
装置付浮体式自動起伏ゲート。1. A lower hinge system is installed on a gutter installed on a river embankment, and is erected so as to automatically open or close the water flow section of the gutter due to fluctuations in the river water level.
In the gate equipment for river water backflow prevention consisting of the floating type undulating doors that fall down, install one pin on each side of the waterway side at the upper position of the side door fittings, and when the door is fully closed. By adopting a structure that supports pressure bearing hardware provided on the right and left sides of the door body, the door body supports the total water pressure applied to the door body when fully closed, with the undulating rotation bearing part of the door body as one fulcrum and the door body top support. Floating body type automatic undulating gate with a forced actuating device that has a structure that supports the pin part that supports the pressure metal part as another support beam with other fulcrums.
物部を支持するピンの一つが、戸当金物内部に設置され
た回転アームに取付け支持される構造とし、かつ前記戸
当金物内部に設置された油圧シリンダーで前記回転アー
ムを回転作動させることにより前記ピンを円弧状に可動
させる機構とし、扉体が起立し全閉に近い状態にある
時、前記ピンを可動させ扉体頂部支圧金物部を開放側に
押すことによって扉体を強制的に開方向に作動させる構
造としたことを特徴とする請求項１記載の強制作動装置
付浮体式自動起伏ゲート。2. A structure in which one of the pins for supporting the top support member of the door body at a position above the side door fitting is attached to and supported by a rotary arm installed inside the door fitting, and A mechanism for moving the pin in an arc shape by rotating the rotating arm with a hydraulic cylinder installed inside the hardware, and when the door body stands up and is in a state close to fully closed, the pin is moved. The floating type automatic undulating gate with a forced operating device according to claim 1, wherein the door body is forcibly operated in the opening direction by pushing the top supporting metal part toward the open side.
下部回転アームとを上・下に配置し、連結棒またはワイ
ヤーロープで連結されたリンク機構とし、かつ前記上部
回転アームには支持ピンを取付け水路側に張出し可動ピ
ンとし、前記下部アームには駆動軸を設けこれを水路側
に張出し、ここに扉体を持上げるための押上げアームを
設置し、かつ前記戸当金物内部に前記上部回転アームを
回転作動させる油圧シリンダーを設置し、この油圧シリ
ンダーによって上部回転アームを回転作動させることに
より、上部の可動ピンを円弧状に作動させると同時に下
部の押上げアームを回転作動させ、扉体が起立状態にあ
る時は上部可動ピンで扉体頂部に設置した支圧金物部を
押し、ゲート開方向に押し下げ作動させ、扉体が倒伏状
態にある時は扉体の側部を押上げアームで閉方向に持上
げ作動させる構造としたことを特徴とする請求項１また
は２記載の強制作動装置付浮体式自動起伏ゲート。3. A link mechanism in which an upper rotary arm and a lower rotary arm are arranged above and below inside a side door fitting, and which is a link mechanism connected by a connecting rod or a wire rope, and is supported by the upper rotary arm. A pin is attached to the water channel side to make it a movable pin, and a drive shaft is provided on the lower arm to extend it to the water channel side, and a push-up arm for lifting the door is installed here, and inside the door fitting. A hydraulic cylinder for rotating the upper rotating arm is installed, and by rotating the upper rotating arm by this hydraulic cylinder, the upper movable pin is operated in an arc shape and at the same time, the lower pushing arm is rotated. When the door is in the upright position, the upper movable pin pushes the pressure support metal part installed on the top of the door, and pushes it down in the gate opening direction.When the door is in the collapsed state, The floating automatic undulating gate with a forced operating device according to claim 1 or 2, wherein a side portion is structured to be lifted in a closing direction by a lifting arm.
シリンダーロッドを元の位置に自動復元させるためのス
プリング機能を設けたことを特徴とする請求項２または
３に記載の強制作動装置付浮体式自動起伏ゲート。4. The floating body type with a forced operating device according to claim 2, wherein the hydraulic cylinder is provided with a spring function for automatically restoring the cylinder rod to the original position when the hydraulic circuit is opened. Automatic undulating gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03920699A JP3488653B2 (en) | 1999-02-17 | 1999-02-17 | Floating automatic hoisting gate with forced operation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03920699A JP3488653B2 (en) | 1999-02-17 | 1999-02-17 | Floating automatic hoisting gate with forced operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000240044A JP2000240044A (en) | 2000-09-05 |
| JP3488653B2 true JP3488653B2 (en) | 2004-01-19 |
Family
ID=12546672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03920699A Expired - Lifetime JP3488653B2 (en) | 1999-02-17 | 1999-02-17 | Floating automatic hoisting gate with forced operation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3488653B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5699888B2 (en) * | 2011-09-30 | 2015-04-15 | 株式会社協和製作所 | Floating type undulating gate facility |
| JP6652409B2 (en) * | 2016-03-07 | 2020-02-19 | 日立造船株式会社 | Land type flap gate equipment |
| JP7038025B2 (en) * | 2018-08-23 | 2022-03-17 | 日立造船株式会社 | Ups and downs gate |
-
1999
- 1999-02-17 JP JP03920699A patent/JP3488653B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000240044A (en) | 2000-09-05 |
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