JPH0584329B2 - - Google Patents
Info
- Publication number
- JPH0584329B2 JPH0584329B2 JP60039535A JP3953585A JPH0584329B2 JP H0584329 B2 JPH0584329 B2 JP H0584329B2 JP 60039535 A JP60039535 A JP 60039535A JP 3953585 A JP3953585 A JP 3953585A JP H0584329 B2 JPH0584329 B2 JP H0584329B2
- Authority
- JP
- Japan
- Prior art keywords
- weir
- bag
- hopper
- water
- chamber
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 77
- 238000011144 upstream manufacturing Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005192 partition Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Barrages (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、上水道、工業用水、農業用水、発電
用水等において、河川、湖沼等から取水する目的
をもつて築造されるゴム袋状堰を洪水時におい
て、自動的に倒伏させるための自動倒伏装置に関
する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a rubber bag-shaped weir constructed for the purpose of taking water from rivers, lakes, etc. for water supply, industrial water, agricultural water, power generation water, etc. The present invention relates to an automatic lodging device for automatically lodging during floods.
（従来技術）
従来、この種の装置としては、洪水位の上昇に
伴つて河川水を容器に注入し、その容器の重みに
より排気弁を開放する方式や、洪水位の上昇に伴
つてフロートに生ずる浮力により排気弁を開放す
る方式のものがあつた。(Prior art) Conventionally, this type of device has been constructed by injecting river water into a container as the flood level rises, and opening the exhaust valve due to the weight of the container, or by releasing a float as the flood level rises. There was a system in which the resulting buoyancy opened the exhaust valve.
（発明が解決しようとする問題点）
しかし、両方式共にゴム袋状堰が自動倒伏した
のちにおいて、排気弁を自動的に閉鎖する機能を
有しないので堤内に設けた操作室内で洪水現象を
起すこととなり、そのため河川内から堤防を横断
して堤内へ洪水を導く導水管を設ける必要があつ
た。(Problem to be solved by the invention) However, since both types do not have a function to automatically close the exhaust valve after the rubber bag-shaped weir automatically collapses, flooding occurs in the control room installed inside the embankment. Therefore, it was necessary to install a water conduit to direct the floodwaters from within the river across the levee and into the levee.
しかしながら洪水を導く導水管が土砂等により
閉鎖されると、ゴム袋状堰が倒伏しなくなる虞が
多分にある等の問題があり、また、この導水管を
設けるのに多大の土木費用を要し、また閉鎖を避
けるための管理が必要となるものである。更に、
両方式はゴム袋状堰が自動倒伏する度ごとに容器
に注入された河川水を排除したり、フロートの止
金具を掛ける等のリセツト操作が必要となるもの
であつた。 However, there are problems such as the possibility that the rubber bag weir will not collapse if the water pipe leading to the flood is blocked by sediment, etc., and it requires a large amount of civil engineering costs to install this water pipe. , which also requires management to avoid closure. Furthermore,
Both types require reset operations such as draining the river water poured into the container and hooking the floats each time the rubber bag weir automatically collapses.
本発明は上記問題点を解決するためになされた
もので、土砂等で閉鎖されるなどの問題を発生さ
せる導水管を除くことによつて、操作の手間を簡
略し、リセツト操作も袋状堰の起立のみとし、し
かも工事費用を大巾に削減することのできる袋状
堰の自動倒伏装置を提供するものである。 The present invention has been made in order to solve the above problems, and by eliminating the water conveyance pipe that causes problems such as being blocked by earth and sand, it simplifies the operation effort and allows the reset operation to be performed using a bag-shaped weir. To provide an automatic lodging device for a bag-shaped weir, which can only be erected and the construction cost can be greatly reduced.
（問題を解決するための手段）
本発明は上記目的を達成するために、河川を横
断して設けられる袋状堰において、該袋状堰には
送風装置等により流体を封入するように設けると
共に排気弁を有する、大気に開口した排気管を接
続し、前記排気弁は隔壁で仕切られたフロート室
とホツパ室との間に位置し、該フロート室は袋状
堰の上流と連通し、該ホツパ室は袋状堰の下流と
連通しており、前記排気弁の主軸には三本のアー
ムを固定し、第１のアームには前記ホツパ室内に
位置する底部に排水孔を有するホツパを連結し、
第２のアームには前記フロート室内に位置するフ
ロートを連結し、第３のアームにはウエイトを連
結し、しかも前記隔壁は袋状堰の倒伏水位に合致
する位置に中心を有する給水管をもつて前記フロ
ート室とホツパ室とを連通し、該給水管はフロー
ト室内の河川水を前記ホツパ内に注水できるよう
に設けてなり、袋状堰を起立させた状態におい
て、倒伏水位に袋状堰の上流水位が上昇したと
き、前記フロート室の河川水を前記給水管を通じ
て前記ホツパへ注水して、該ホツパの降下により
排気弁を開き、袋状堰の封入した流体を排出して
袋状堰を倒伏するように設けたことを特徴とする
ものである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a bag-like weir installed across a river, in which the bag-like weir is provided with a blower or the like to seal in fluid. An exhaust pipe having an exhaust valve and opening to the atmosphere is connected, and the exhaust valve is located between a float chamber and a hopper chamber separated by a partition, and the float chamber communicates with the upstream side of the bag weir. The hopper chamber communicates with the downstream of the bag weir, and three arms are fixed to the main shaft of the exhaust valve, and the first arm is connected to a hopper having a drainage hole at the bottom located inside the hopper chamber. death,
A float located in the float chamber is connected to the second arm, a weight is connected to the third arm, and the bulkhead has a water supply pipe whose center is located at a position that corresponds to the collapsed water level of the bag weir. The float chamber and the hopper chamber are connected to each other, and the water supply pipe is provided so that river water in the float chamber can be injected into the hopper. When the upstream water level of the float chamber rises, the river water in the float chamber is injected into the hopper through the water supply pipe, and when the hopper descends, the exhaust valve is opened, and the fluid sealed in the bag-shaped weir is discharged and the bag-shaped weir is closed. It is characterized by being provided so as to lie down.
（実施例）
本発明を第１図〜第３図にもとづいて説明す
る。可撓性材料、例えばゴム引き布等からなる袋
状堰１は固定金具２によりコンクリートを打つた
河床面３に河川を横断して取り付けられる。袋状
堰１には、送気管５が接続されており、その他端
には送風装置または送水ポンプ４が接続されてい
る。送気管５の途中には排気管６が接続され、そ
の他端は排気弁７を介して大気に開放されてい
る。従つて、送風装置４により袋状堰１中に流体
を圧送、封入することにより袋状堰１を起立さ
せ、排気弁７を開放することによつて袋状堰１内
の封入流体を排気管６を通じて放出することによ
つて倒伏させることができる。封入流体は空気ま
たは水を使用する。(Example) The present invention will be explained based on FIGS. 1 to 3. A bag-like weir 1 made of a flexible material, such as rubberized cloth, is attached to a concreted riverbed surface 3 across a river by means of fixing fittings 2. An air pipe 5 is connected to the bag-shaped weir 1, and an air blower or a water pump 4 is connected to the other end. An exhaust pipe 6 is connected to the middle of the air supply pipe 5, and the other end is opened to the atmosphere via an exhaust valve 7. Therefore, by force-feeding and sealing the fluid into the bag-like weir 1 by the blower device 4, the bag-like weir 1 is made to stand up, and by opening the exhaust valve 7, the sealed fluid in the bag-like weir 1 is discharged into the exhaust pipe. Lodging can be achieved by discharging through 6. Air or water is used as the encapsulating fluid.
排気弁７は、以下に示すように、自動的に開閉
するように設けられている。 The exhaust valve 7 is provided to open and close automatically, as shown below.
河川の岸の法面には、第１図、第２図に示すよ
うに、区画室８が設けられている。区画室８の河
川に面する壁面８ａには堰上流の河川の水面下に
通ずる流入孔１２が設けられている。区画室８は
隔壁１０によつて、下流側のフロート室９と、上
流側のホツパ室１１とに区画されている。 As shown in FIGS. 1 and 2, compartments 8 are provided on the slope of the river bank. A wall surface 8a of the compartment 8 facing the river is provided with an inflow hole 12 that communicates with the surface of the river upstream of the weir. The compartment chamber 8 is divided by a partition wall 10 into a float chamber 9 on the downstream side and a hopper chamber 11 on the upstream side.
隔壁１０には、ホツパ室１１に配置したホツパ
２１に注水するように給水管１３の基部が接続さ
れている。給水管１３の基部の中心は、堰の倒伏
水位L1に合致している。隔壁１０の高さは倒伏
水位L1より高くなるように設けられている。 The base of a water supply pipe 13 is connected to the partition wall 10 so as to inject water into a hopper 21 arranged in a hopper chamber 11. The center of the base of the water supply pipe 13 coincides with the lodging water level L1 of the weir. The height of the partition wall 10 is set to be higher than the lodging water level L1 .
ホツパ室１１には、室内水を袋状堰１の下流へ
排水するための河床面より若干高い位置に開口す
るように排水管１５の一端を接続し、その他端を
堰下流の岸法面に開口するように設ける。 One end of a drain pipe 15 is connected to the hopper chamber 11 so as to open at a position slightly higher than the river bed surface for draining indoor water downstream of the bag weir 1, and the other end is connected to the bank slope downstream of the weir. Provided with an opening.
更に、隔壁１０の真上には、排気管６の途中に
設けた排気弁７が配置されており、排気弁７の弁
軸に接続された主軸１６には三本のアーム１８
ａ，１８ｂ，１８ｃが固定されている。直線状に
配置されたアーム１８ａ，１８ｂには夫々連結材
１９，２０を介してホツパ２１、フロート２２が
夫々取付けられている。第３のアーム１８ｃには
ウエート１７が連結されている。 Further, an exhaust valve 7 provided in the middle of the exhaust pipe 6 is arranged directly above the partition wall 10, and a main shaft 16 connected to the valve shaft of the exhaust valve 7 has three arms 18.
a, 18b, and 18c are fixed. A hopper 21 and a float 22 are attached to the linearly arranged arms 18a and 18b via connecting members 19 and 20, respectively. A weight 17 is connected to the third arm 18c.
ホツパ２１の底部には、給水管１３から注水さ
れた河川水を排水するために小さな排水孔１４が
設けられている。 A small drainage hole 14 is provided at the bottom of the hopper 21 to drain river water poured from the water supply pipe 13.
排気管６の開放端６ａは河川岸の法面の上方で
かつ充分高い位置において開口している。従つて
開放端６ａからの流水の浸入は一切ない。 The open end 6a of the exhaust pipe 6 opens at a sufficiently high position above the slope of the river bank. Therefore, there is no intrusion of running water from the open end 6a.
また、連結材１９，２０としては屈曲が自由な
ワイヤー等の材料が採用される。 Further, as the connecting members 19 and 20, a material such as a wire that can be bent freely is used.
以下に、本発明装置の作用について説明する。 The operation of the device of the present invention will be explained below.
まず、空気等の流体を送ることによつて第３図
に示す状態に堰１を起立させると、上流水位は貯
水水位L2に達する。この状態では上流水が流入
孔１２を通つてフロート室９の中に浸入して来る
ので、フロート室９内の水位は貯水水位L2に等
しくなる。そして、フロート２２は浮上し、この
ため連結材２０に張力が作用しなくなる。連結材
２０に張力がなくなつてもウエイト１７とホツパ
２１とはそのモーメントのバランスがとつてある
ので、排気弁７は閉じた状態を保つている。 First, when the weir 1 is erected to the state shown in FIG. 3 by sending a fluid such as air, the upstream water level reaches the reservoir water level L2 . In this state, upstream water enters the float chamber 9 through the inflow hole 12, so the water level in the float chamber 9 becomes equal to the storage water level L2 . Then, the float 22 floats up, and therefore no tension is applied to the connecting member 20. Even if there is no tension in the connecting member 20, the moments of the weight 17 and the hopper 21 are balanced, so the exhaust valve 7 remains closed.
上流の水位が上り越流が始まる。越流水の水位
が増水により高くなり、第４図に示すように、倒
水位L1に達すると、フロート室９の水位もL1迄
上昇するので、フロート室９内の河川水は給水管
１３を通つてホツパ２１に注入される。給水管か
らの流入水の量と排出孔１４からの排出水の量と
の差によりホツパ２１は徐々に河川水で満たされ
る。ホツパ２１内が河川水によつて満たされる
と、第５図に示すように、ホツパ２１は下降す
る。この下降によつてアーム８ａ，８ｂ，８ｃは
反時計方向に回動し、排気弁７を開く、袋状堰１
内の流体は送気管５、排気管６、排気弁７を通つ
て排気管６の開口６ａより排出される。これによ
つて袋状堰１は倒伏を開始し、上流の水位も低下
してゆく。ホツパ２１内の河川水は排水孔１４か
ら排水され、その中の水位が所定高さになるま
で、下降した位置をとり、その間排気弁７を開放
しつづける（第６図）。上流水位の低下によつて
給水管１３の注水は停止しているので、ホツパ２
１内の河川水は排出のみとなり、ついには排水を
完了する。この間、ホツパ室１１内の河川水は排
水管１５を通じて下流に排出している。また同時
に、フロート室９内の水位も上流水位の下降に伴
つて下降し、所定水位に低下すると、第７図に示
すように、フロート２２に接続された連結材２０
が伸びきる。従つて更に水位が下るとフロート２
２の自重による回転モーメントが主軸１６に作用
し、徐々に排気弁７を閉じる。そして、この間に
袋状堰１内の流体は排気管６を通じて完全に排出
する。 The water level upstream rises and overflow begins. When the water level of the overflow water increases due to water increase and reaches the overflow level L1 as shown in Fig. 4, the water level in the float chamber 9 also rises to L1 , so the river water in the float chamber 9 flows into the water supply pipe 13. The liquid is injected into the hopper 21 through the hopper 21. The hopper 21 is gradually filled with river water due to the difference between the amount of water flowing in from the water supply pipe and the amount of water discharged from the discharge hole 14. When the inside of the hopper 21 is filled with river water, the hopper 21 descends as shown in FIG. This lowering causes the arms 8a, 8b, and 8c to rotate counterclockwise to open the exhaust valve 7 and the bag-shaped weir 1.
The fluid inside passes through the air supply pipe 5, the exhaust pipe 6, and the exhaust valve 7, and is discharged from the opening 6a of the exhaust pipe 6. As a result, the bag weir 1 starts to collapse, and the water level upstream also decreases. The river water in the hopper 21 is drained from the drain hole 14 and assumes a lowered position until the water level therein reaches a predetermined height, during which time the exhaust valve 7 is kept open (FIG. 6). Water injection into the water supply pipe 13 has stopped due to the drop in the upstream water level, so the hopper 2
The river water within 1 will only be discharged, and finally the drainage will be completed. During this time, the river water in the hopper chamber 11 is discharged downstream through the drain pipe 15. At the same time, the water level in the float chamber 9 also falls as the upstream water level falls, and when it falls to a predetermined water level, as shown in FIG.
is fully extended. Therefore, if the water level falls further, float 2
A rotational moment due to the weight of the exhaust valve 2 acts on the main shaft 16, gradually closing the exhaust valve 7. During this period, the fluid in the bag-like weir 1 is completely discharged through the exhaust pipe 6.
その後、フロート室９内の水位の低下に伴いフ
ロート２２も低下し、フロート２２とウエイト１
７およびホツパ２１の回転モーメントの差により
ウエイト１７は時計方向に回動し、水位が起立水
位L3に達すると、ウエイト１７が中央位置から
フロート室９側に回動するので、一気に排気弁を
閉鎖する（第８図）。 After that, as the water level in the float chamber 9 decreases, the float 22 also decreases, and the float 22 and the weight 1
The weight 17 rotates clockwise due to the difference in rotation moment between the hopper 7 and the hopper 21, and when the water level reaches the standing water level L3 , the weight 17 rotates from the center position to the float chamber 9 side, so the exhaust valve is closed all at once. Close (Figure 8).
第８図の状態の袋状堰１に送風装置４により送
気管５を通じて流体を封入すると、袋状堰は立上
るので、上流側に水を留めることができる（第９
図）。 When fluid is sealed in the bag-like weir 1 in the state shown in FIG. 8 through the air pipe 5 using the air blower 4, the bag-like weir rises and water can be retained on the upstream side (No. 9
figure).
水が留れば、フロート室９の水位が上り、フロ
ート２２が浮上する。 When the water remains, the water level in the float chamber 9 rises and the float 22 floats up.
袋状堰１の高さを、第３図に示す状態とすれ
ば、既述の動作を繰返えすこととなる。 If the height of the bag-shaped weir 1 is set to the state shown in FIG. 3, the above-mentioned operations will be repeated.
（効果）
本発明は前記の構成からなるものであるので、
装置のほとんどの構成は袋状堰を敷設した河川岸
の近傍に設けることができ、従つて、従来のよう
な導水管を必要とすることなく設置することがで
き、しかも袋状堰を起立させた後は越流水が倒伏
水位に達すると確実に袋状堰を倒伏させることが
でき、また構造が簡単であるので故障もほとんど
ないものである。(Effects) Since the present invention has the above configuration,
Most of the configurations of the device can be installed near the river bank where the bag weir has been laid, and therefore can be installed without the need for conventional water conduit pipes, and moreover, it is possible to install the bag weir in the vicinity of the river bank. Once the overflow water reaches the overflow level, the bag weir can be reliably collapsed, and since the structure is simple, there are almost no failures.
第１図は袋状堰の一部を省略して示した本発明
装置の平面図、第２図は第１図の縦断面図、第３
図は本発明装置を平面的にとらえて示す説明図、
第４〜第９図は、夫々第３図と同様の図面によつ
て示す作用説明図である。
１……袋状堰、４……送風装置、５……送気
管、６……排気管、７……排気弁、８ａ〜ｃ……
アーム、９……フロート室、１１……ホツパ室、
１２……流入孔、１３……給水管、１５……排水
管、１７……ウエイト、１９，２０……連結材、
２１……ホツパ、２２……フロート、L1……倒
伏水位、L2……貯水水位、L3……起立水位。
FIG. 1 is a plan view of the device of the present invention with a part of the bag-shaped weir omitted, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG.
The figure is an explanatory diagram showing the device of the present invention in a two-dimensional view.
4 to 9 are explanatory diagrams showing the operation using drawings similar to FIG. 3, respectively. 1... Bag-shaped weir, 4... Air blower, 5... Air pipe, 6... Exhaust pipe, 7... Exhaust valve, 8a to c...
Arm, 9...float chamber, 11...hopper chamber,
12... Inflow hole, 13... Water supply pipe, 15... Drain pipe, 17... Weight, 19, 20... Connecting material,
21... Hoppa, 22... Float, L 1 ... Lodging water level, L 2 ... Reservoir water level, L 3 ... Upright water level.
Claims (1)
該袋状堰には送風装置等により流体を封入するよ
うに設けると共に排気弁を有する、大気に開口し
た排気管を接続し、前記排気弁は隔壁で仕切られ
たフロート室とホツパ室との間に位置し、該フロ
ート室は袋状堰の上流と連通し、該ホツパ室は袋
状堰の下流と連通しており、前記排気弁の主軸に
は三本のアームを固定し、第１のアームには前記
ホツパ室内に位置する底部に排水孔を有するホツ
パを連結し、第２のアームには前記フロート室内
に位置するフロートを連結し、第３のアームには
ウエイトを連結し、しかも前記隔壁は袋状堰の倒
伏水位に合致する位置に中心を有する給水管をも
つて前記フロート室とホツパ室とを連通し、該給
水管はフロート室内の河川水を前記ホツパ内に注
水できるように設けてなり、袋状堰を起立させた
状態において、倒伏水位に袋状堰の上流水位が上
昇したとき、前記フロート室の河川水を前記給水
管を通じて前記ホツパへ注水して、該ホツパの降
下により排気弁を開き、袋状堰の封入した流体を
排出して袋状堰を倒伏するように設けたことを特
徴とする袋状堰の自動倒伏装置。1 In a bag weir installed across a river,
The bag-shaped weir is provided with a blower device or the like to seal in fluid, and is connected to an exhaust pipe that is open to the atmosphere and has an exhaust valve. The float chamber communicates with the upstream side of the bag-like weir, the hopper chamber communicates with the downstream side of the bag-like weir, three arms are fixed to the main shaft of the exhaust valve, and a first A hopper having a drainage hole at the bottom located in the hopper chamber is connected to the arm, a float located in the float chamber is connected to the second arm, a weight is connected to the third arm, and The bulkhead communicates the float chamber and the hopper chamber with a water supply pipe having a center at a position corresponding to the collapsed water level of the bag-shaped weir, and the water supply pipe is arranged so that river water in the float chamber can be injected into the hopper. When the upstream water level of the bag weir rises to the collapsed water level when the bag weir is erected, river water in the float chamber is injected into the hopper through the water supply pipe to lower the hopper. 1. An automatic lodging device for a bag-like weir, characterized in that the bag-like weir is lowered by opening an exhaust valve and discharging the fluid enclosed in the bag-like weir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60039535A JPS61200215A (en) | 1985-02-28 | 1985-02-28 | Automatic fall device for bagform weir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60039535A JPS61200215A (en) | 1985-02-28 | 1985-02-28 | Automatic fall device for bagform weir |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61200215A JPS61200215A (en) | 1986-09-04 |
| JPH0584329B2 true JPH0584329B2 (en) | 1993-12-01 |
Family
ID=12555738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60039535A Granted JPS61200215A (en) | 1985-02-28 | 1985-02-28 | Automatic fall device for bagform weir |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61200215A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070086967A (en) | 2001-07-09 | 2007-08-27 | 헨리 케이 오베르메이어 | Water control gate and actuator therefore |
| CN103572740B (en) * | 2013-11-07 | 2015-06-24 | 河海大学 | Inflation automatic opening and closing gate and water gate device |
-
1985
- 1985-02-28 JP JP60039535A patent/JPS61200215A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61200215A (en) | 1986-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |