JPH0583032U - Floating matter recovery device - Google Patents

Floating matter recovery device

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Publication number
JPH0583032U
JPH0583032U JP2487192U JP2487192U JPH0583032U JP H0583032 U JPH0583032 U JP H0583032U JP 2487192 U JP2487192 U JP 2487192U JP 2487192 U JP2487192 U JP 2487192U JP H0583032 U JPH0583032 U JP H0583032U
Authority
JP
Japan
Prior art keywords
floating
recovery space
guide
recovery
open
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.)
Pending
Application number
JP2487192U
Other languages
Japanese (ja)
Inventor
欣弘 宇都
正和 柏原
健一 平山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanadevia Corp
Original Assignee
Hitachi Zosen Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP2487192U priority Critical patent/JPH0583032U/en
Publication of JPH0583032U publication Critical patent/JPH0583032U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】 【目的】 河川等における流木など浮遊物を安全かつ効
率的に回収する。 【構成】 浮遊物の回収空間2をあけて配置され内部に
浸水させて着底可能な左右一対の台船1を設け、前記台
船1の船首部に、回収空間2を開閉自在でかつ浮遊物の
流入を案内するガイド兼用開閉扉7を設けるとともに、
船尾部に浮遊物を係止するスクリーンゲート4を設け、
台船1に回収空間2内に収容した浮遊物を排出するバケ
ット装置21を設けた。 【効果】 目的地で台船内に浸水させて台船を着底さ
せ、ガイド兼用開閉扉を船首前方両舷側に開いて浮遊物
を回収空間内に取り込む。
(57) [Summary] [Purpose] Collect floating materials such as driftwood in rivers safely and efficiently. [Structure] A pair of left and right pontoons 1 that are arranged with a recovery space 2 for suspended solids open and are capable of being flooded and settling on the bottom are provided, and the recovery space 2 can be opened and closed and floated at the bow of the berth 1. A guide / open / close door 7 for guiding the inflow of goods is provided,
The screen gate 4 that locks floating matter is provided at the stern,
The boat 1 is provided with a bucket device 21 for discharging the suspended matter contained in the recovery space 2. [Effect] At the destination, the pontoon is flooded to bring the pedestal to the bottom, and the guide / open / close doors are opened to both sides of the front side of the bow to capture the suspended matter in the collection space.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、台風や大雨などより河川などに流入する流木や葦、ごみ等の浮遊物 を回収する浮遊物の回収装置に関する。 The present invention relates to a floating substance recovery device for recovering floating substances such as driftwood, reeds, and garbage that flow into rivers due to typhoons and heavy rain.

【0002】[0002]

【従来の技術】[Prior Art]

従来、台風や大雨などより河川や湖沼などに流入する流木や葦、ごみ等の浮遊 物を回収する場合には、多数のブイが一列に装着されたワイヤーの両端を小型船 舶に繋着し、小型船舶を曳航してワイヤーにより浮遊物を取り囲み、さらに運搬 して浮遊物を接岸させ、陸上に設置したパワーショベルなどによって陸上げし回 収しいた。 Conventionally, when collecting floating materials such as driftwood, reeds, and garbage that flow into rivers and lakes due to typhoons and heavy rain, both ends of a wire with many buoys attached in a row are attached to a small vessel. , A small vessel was towed to surround the suspended matter with a wire, and it was further transported to berth the suspended matter and lifted up by a power shovel installed on land and collected.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかし、上記従来方法では、小型船舶で大量の浮遊物を曳航しなければならず 、能力に限界があるとともに、流れが速い河川などの場合には大きな危険が伴う 等の問題があった。 However, the above-mentioned conventional method has a problem in that a large amount of suspended matter must be towed by a small ship, its capacity is limited, and there is a great danger in the case of a river with a fast flow.

【0004】 本考案は、上記問題点を解決して流木などの浮遊物を安全に効率よく回収する ことができる浮遊物の回収装置を提供することを目的とする。An object of the present invention is to solve the above problems and to provide a floating substance recovery apparatus that can safely and efficiently recover floating substances such as driftwood.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

上記問題点を解決するために本考案に係る浮遊物の回収装置の第1の手段は、 浮遊物の回収空間をあけて浸水着底可能な左右一対の台船を連結部材を介して配 置し、前記台船の船首部に、回収空間を開閉自在でかつ浮遊物の流入を案内する ガイド兼用開閉扉を設けるとともに、船尾部に浮遊物を係止するスクリーンゲー トを設け、台船に回収空間内に収容した浮遊物を排出するバケット装置を設けた ものである。 In order to solve the above-mentioned problems, the first means of the floating object recovery apparatus according to the present invention is to arrange a pair of left and right pontoons capable of bathing swimsuit bottoms through a connecting member by opening a floating object recovery space. On the bow of the above-mentioned pier, the opening / closing door that can open and close the collection space and that guides the inflow of floating matter is installed, and the screen gate that locks the floating matter is provided at the stern of the pier. It is equipped with a bucket device that discharges suspended matter contained in the collection space.

【0006】 また、第2の手段は、浮遊物の回収空間をあけて左右一対の台船を連結部材を 介して配置し、前記台船の船首部に、回収空間を開閉自在でかつ浮遊物の流入を 案内するガイド兼用開閉扉を設けるとともに、船尾部に浮遊物を係止するスクリ ーンゲートを設け、前記台船に回収空間内に収容した浮遊物を排出するバケット 装置を設けるとともに、台船に複数の固定用脚を伸縮自在に垂下させて台船を位 置固定する着底装置を設けたものである。The second means is to arrange a pair of left and right pontoons via a connecting member with a floating material recovery space open, and to open and close the recovery space at the bow of the berth and to suspend the floating material. In addition to providing an opening / closing door that also serves as a guide that guides the inflow of water, a screen gate that locks floating materials is provided at the stern, and a bucket device that discharges the floating materials stored in the recovery space is installed on the ship, and It is equipped with a bottoming device to fix the pontoon in place by suspending a plurality of fixing legs elastically.

【0007】[0007]

【作用】[Action]

上記構成において、回収場所で船首部を流水の上流側に向けた状態で台船内に 浸水させ台船を着底させて固定するか、または着底装置の固定用脚を伸長して着 底させることにより台船を自立固定する。そして、開閉扉を前方に大きく開いて 固定し、流れてくる浮遊物を広範囲に回収空間内に取り込み、流水はスクリーン ゲートから下流側に排水する。そして、回収空間が浮遊物で一杯になると、バケ ット装置を駆動して浮遊物を掴んで持ち上げ、回収装置に横付けされた回収船に 載せて陸上に搬送する。浮遊物が少ない場合には、回収後台船内の水を排水する か、または固定用脚を短縮して、台船を浮上させ、台船に設けた推進装置または プッシャーボートにより移動させて陸に接岸させ、バケット装置により浮遊物を 排出する。 In the above configuration, with the bow of the ship facing the upstream side of the running water at the collection location, the ship is submerged to fix it by bottoming it, or the fixing legs of the bottoming device are extended to make it bottom. By doing so, the barge is fixed independently. Then, the opening and closing door is opened wide forward and fixed, the floating material that flows in is taken into the recovery space over a wide area, and the running water is drained downstream from the screen gate. When the recovery space is filled with floating material, the bucket device is driven to grab and lift the floating material, and the floating material is placed on a recovery vessel that is placed next to the recovery device and transported to land. If the amount of suspended solids is small, drain the water in the pontoon after collection, or shorten the fixing legs to levitate the pontoon and move it by the propulsion device or pusher boat provided on the pontoon to land on the shore. Then, the floating equipment is discharged by the bucket device.

【0008】[0008]

【実施例】【Example】

以下、本考案に係る浮遊物の回収装置の第1実施例を図1および図2に基づい て説明する。 Hereinafter, a first embodiment of a suspended matter recovery apparatus according to the present invention will be described with reference to FIGS. 1 and 2.

【0009】 1は所定間隔を開けて互いに平行に配置された左右一対の台船で、中空状で内 部に浸水させて着底可能な弁装置(図示せず)と、内部の水を排水して浮上可能 な排水装置(図示せず)が装備されている。両台船1は船首部で底部フレーム3 で連結されるとともに船尾部でスクリーンゲート4により互い連結固定され、台 船1間の空間が浮遊物の回収空間2に構成されている。Reference numeral 1 denotes a pair of left and right barges arranged in parallel with each other at a predetermined interval, which is hollow and has a valve device (not shown) capable of submersing water to the inner part and draining the water inside. It is equipped with a drainage device (not shown) that can float up. The two pontoons 1 are connected to each other by a bottom frame 3 at the bow and also fixedly connected to each other by a screen gate 4 at the stern, so that a space between the pontoons 1 is formed as a floating material recovery space 2.

【0010】 台船1の船首部にはそれぞれ支持ブラケット5に垂直ピン6を介して開閉自在 なガイド兼用開閉扉7が設けられ、台船1の舷側に設けられた開閉シリンダー装 置8のピストンロッドが、ガイド兼用開閉扉7に突設された開閉ブラケット7a にピン連結されて回収空間2の入口を閉鎖し、回収空間2内の浮遊物の流失を防 止する閉止位置と台船1の外側前方に開いて浮遊物を回収空間2に案内する開放 位置の間で開閉される。At the bow portion of the pier 1, each of the support brackets 5 is provided with a guide / open / close door 7 that can be opened / closed via a vertical pin 6, and a piston of an open / close cylinder device 8 provided on the port side of the pier 1 is provided. The rod is pin-connected to the opening / closing bracket 7a protruding from the opening / closing door 7 that also serves as a guide to close the entrance of the collection space 2 and prevent the floating matter in the collection space 2 from being washed away. It is opened and closed between the open positions that open forward and guide the suspended matter into the collection space 2.

【0011】 台船1の船尾部に設けられたスクリーンゲート4は、両台船1間に取り付けら れた矩形状のスクリーン枠11と、このスクリーン枠11の側枠11aに形成さ れた昇降溝11bに昇降自在に案内されて浮遊物のみを堰き止める格子状のスク リーン12と、スクリーン枠11の上枠11cに設けられてスクリーン12をワ イヤー14を介して昇降させる開閉ウインチ13とで構成され、移動時などに開 閉ウインチ11によりスクリーン10を台船1の吃水線W.Lより上に上昇させ て航行時の抵抗を減少させることができる。The screen gate 4 provided at the stern of the pedestal 1 includes a rectangular screen frame 11 mounted between the pedestals 1 and an elevating and lowering formed on a side frame 11 a of the screen frame 11. A grid-shaped screen 12 that is guided up and down in the groove 11b to block only floating substances, and an open / close winch 13 that is provided in the upper frame 11c of the screen frame 11 and moves the screen 12 up and down via the wire 14. The screen 10 is opened and closed by a winch 11 which is used to move the water line W. It can be raised above L to reduce resistance during navigation.

【0012】 これら台船1上には、回収空間2に集めた浮遊物を排出するためのバケット装 置21が設けられている。このバケット装置21は、台船1の上面に船首尾方向 に敷設されたガイドレール22に案内されて移動自在な左右一対の自走式移動架 台23と、両移動架台23間に掛け渡されて右舷側に突出するガイドフレーム2 4と、このガイドフレーム24に案内されて移動自在なクラブ台車25と、この クラブ台車25の昇降装置に作業用ワイヤー27を介して昇降自在でかつ開閉自 在に吊り下げられたバケット26とで構成されている。したがって、回収空間2 内の浮遊物をバケット26で掴み、バケット26を上昇させると共に移動架台2 3の空間部を介して右舷側に移動させ、バケットを開放することにより、右舷側 に横付けされた運搬船に積み込むことができる。A bucket device 21 for discharging the floating substances collected in the recovery space 2 is provided on these berths 1. The bucket device 21 is stretched between a pair of left and right self-propelled mobile mounts 23, which are movable by being guided by guide rails 22 laid in the bow-stern direction on the upper surface of the pier 1. Guide frame 24 protruding toward the starboard side, a club carriage 25 guided by the guide frame 24 to be movable, and an elevating device for the club carriage 25 that can be raised and lowered via a working wire 27 and can be opened and closed independently. It is composed of a bucket 26 that is hung on. Therefore, the suspended matter in the recovery space 2 is grabbed by the bucket 26, and the bucket 26 is lifted and moved to the starboard side through the space part of the moving pedestal 23, and the bucket is opened, so that the bucket is laid sideways on the starboard side. Can be loaded on a carrier.

【0013】 上記構成の回収装置による河川における浮遊物の回収作業を説明する。 プッシャーボートなどにより、浮上している台船1を押して目的地まで運搬し、 船首が上流に向く姿勢で台船1内に浸水させて回収装置を着底させる。スクリー ン12を下ろし、ガイド兼用開閉扉7を外側前方に大きく開いて流れて行く浮遊 物を回収空間2に案内し、スクリーン12により漉し取る。回収空間2が浮遊物 で一杯になると、運搬船を台船1の右舷に横付けさせ、バケット装置21を駆動 して回収空間2内の浮遊物を運搬船に積込む。もちろん、回収作業と並行して積 込み作業を行うこともできる。積込みが終わると、再度ガイド兼用開閉扉7を開 けて浮遊物を回収し、運搬船は航行して処理地に接岸させる。また、浮遊物が少 ない場合には、ガイド兼用開閉扉7を閉じ、台船1内の水を排水して浮上させ、 プッシャーボートにより処理地に接岸させ、バケット装置21により浮遊物を排 出してもよい。The operation of recovering suspended solids in a river by the recovery device having the above configuration will be described. The pusher boat or the like pushes the floating pontoon 1 to carry it to the destination, and the bowing of the pontoon 1 causes the recovery device to bottom. The screen 12 is lowered, the guide / opening / closing door 7 is widely opened to the front outside, and the floating material flowing is guided to the collection space 2, and is filtered by the screen 12. When the recovery space 2 is filled with the floating material, the carrier is horizontally placed on the starboard side of the pontoon 1 and the bucket device 21 is driven to load the floating material in the recovery space 2 onto the carrier. Of course, loading work can be performed in parallel with the collection work. When the loading is completed, the guide / open / close door 7 is opened again to collect the floating substances, and the carrier ships sail and berth at the treatment site. When the amount of suspended solids is small, the guide / open / close door 7 is closed, the water in the ship 1 is drained and floated, and the pusher boat berths the treated land, and the bucket device 21 discharges the suspended solids. You may.

【0014】 なお、この回収装置の移動をプッシャーボートにより行ったが、両岸間に張設 されたワイヤーを台船1に連結し、このワイヤーを駆動するウインチにより移動 させることもできる。また、台船1に推進装置を設けて自走式にしてもよく、自 走式とした場合は、流れのない湖沼や港湾などで移動させつつ浮遊物を回収する ことができる。Although the recovery device was moved by the pusher boat, it is also possible to connect a wire stretched between both banks to the pontoon 1 and move it by a winch that drives this wire. In addition, a propulsion device may be provided on the pontoon 1 to make it self-propelled, and if it is self-propelled, suspended matter can be collected while moving in a lake or harbor where there is no flow.

【0015】 図3および図4は第1実施例より水深が深い所で使用される回収装置の第2実 施例を示す。なお、第1実施例と同一の部材は同一符号を付し、説明は省略する 。FIGS. 3 and 4 show a second embodiment of the recovery device used in a place where the water depth is deeper than that of the first embodiment. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

【0016】 この台船1を流水中で位置固定するために、4本の固定用脚32を下方に伸ば して着底させる着底装置31が設けられている。すなわち、台船1の両舷の船首 部および船尾部には、それぞれ固定用脚32を昇降自在に案内するガイド部材3 3が取り付けられ、ガイド部材33には、固定用脚32の側面に上下方向に沿っ て配設されたラック32aに噛み合うピニオン34aとこのピニオン34aを駆 動する減速機付ピニオン駆動用モーター34bとを具備したギヤユニット34が 設けられている。また固定用脚32の下端部には、着底部に対応して傾斜可能な 着底パッド35がピンなどを介して取り付けられている。In order to fix the position of the pontoon 1 in running water, a bottoming device 31 is provided for extending the four fixing legs 32 downward to reach the bottom. That is, guide members 33 for guiding the fixing legs 32 to move up and down are attached to the bow and stern portions of both sides of the pontoon 1, and the guide members 33 vertically move to the sides of the fixing legs 32. A gear unit 34 including a pinion 34a that meshes with a rack 32a arranged along the direction and a pinion drive motor 34b with a reduction gear that drives the pinion 34a is provided. Further, a bottoming pad 35 that can be tilted corresponding to the bottoming portion is attached to the lower end portion of the fixing leg 32 via a pin or the like.

【0017】 上記構成によれば、目的地でギヤユニット34により固定用脚32を下降させ て着底パッド35を着地させ、さらに固定用脚32を下降して台船1を持ち上げ ることにより、回収装置を自立固定させて回収作業を行うことができ、深い水深 に対応することができる。According to the above configuration, at the destination, the gear unit 34 lowers the fixing leg 32 to land the bottoming pad 35, and further lowers the fixing leg 32 to lift the barge 1. It is possible to perform recovery work by fixing the recovery device on its own, and it is possible to handle deep water.

【0018】[0018]

【考案の効果】[Effect of the device]

以上に述べたごとく本考案によれば、回収空間を有する左右一対の台船により 、流れてくる流木等の浮遊物をガイド兼用開閉扉を介して回収空間に案内し、ス クリーンにより係止して収容するので、危険を伴うことなく安全に浮遊物を回収 することができ、効率よく回収作業が行える。 As described above, according to the present invention, a pair of left and right barges having a recovery space guide floating materials such as drifting wood into the recovery space through the guide / open / close door and lock them with a screen. Since it is stored as a whole, it is possible to safely collect the suspended matter without causing any danger, and the collection work can be performed efficiently.

【図面の簡単な説明】[Brief description of drawings]

【図1】本考案に係る回収装置の第1実施例を示す斜視
図である。
FIG. 1 is a perspective view showing a first embodiment of a recovery device according to the present invention.

【図2】同回収装置の平面断面図である。FIG. 2 is a plan sectional view of the recovery device.

【図3】回収装置の第2実施例を示す斜視図である。FIG. 3 is a perspective view showing a second embodiment of the recovery device.

【図4】同回収装置の平面断面図である。FIG. 4 is a plan sectional view of the recovery device.

【符号の説明】[Explanation of symbols]

1 台船 2 回収空間 3 底部フレーム 4 スクリーンゲート 7 ガイド兼用開閉扉 11 スクリーン枠 12 スクリーン 21 バケット装置 23 移動架台 25 クラブ台車 26 バケット 31 着底装置 32 固定用脚 32a ラック 34 ギヤユニット 34a ピニオン 35 着底パッド 1 Ship 2 Collection space 3 Bottom frame 4 Screen gate 7 Opening / closing door for guide 11 Screen frame 12 Screen 21 Bucket device 23 Mobile mount 25 Club trolley 26 Bucket 31 Bottom device 32 Fixing leg 32a Rack 34 Gear unit 34a Pinion 35 Arrival Bottom pad

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 浮遊物の回収空間をあけて浸水着底可能
な左右一対の台船を連結部材を介して配置し、前記台船
の船首部に、回収空間を開閉自在でかつ浮遊物の流入を
案内するガイド兼用開閉扉を設けるとともに、船尾部に
浮遊物を係止するスクリーンゲートを設け、台船に回収
空間内に収容した浮遊物を排出するバケット装置を設け
たことを特徴とする浮遊物の回収装置。
1. A pair of left and right pontoons capable of bottoming a bathing suit are arranged via a connecting member with a floating material recovery space open, and the recovery space is openable and closable at the bow of the berth. In addition to providing an opening / closing door that also serves as a guide that guides inflow, a screen gate that locks floating matter is provided at the stern part, and a bucket device that discharges the floating matter stored in the recovery space is provided on the barge. Floating matter recovery device.
【請求項2】 浮遊物の回収空間をあけて左右一対の台
船を連結部材を介して配置し、前記台船の船首部に、回
収空間を開閉自在でかつ浮遊物の流入を案内するガイド
兼用開閉扉を設けるとともに、船尾部に浮遊物を係止す
るスクリーンゲートを設け、前記台船に回収空間内に収
容した浮遊物を排出するバケット装置を設けるととも
に、台船に複数の固定用脚を伸縮自在に垂下させて台船
を位置固定する着底装置を設けたことを特徴とする浮遊
物の回収装置。
2. A guide for arranging a pair of left and right pontoons via a connecting member with a floating material recovery space open, and a guide for opening and closing the recovery space and guiding the inflow of floating material to the bow of the berth. In addition to providing a combined opening / closing door, a screen gate for locking floating matter is provided at the stern part, and a bucket device for discharging floating matter stored in the recovery space is provided on the ship, and a plurality of fixing legs are provided on the ship. An apparatus for collecting suspended matter, characterized in that it is provided with a bottoming device for elastically hanging down and fixing the position of a barge.
JP2487192U 1992-04-20 1992-04-20 Floating matter recovery device Pending JPH0583032U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2487192U JPH0583032U (en) 1992-04-20 1992-04-20 Floating matter recovery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2487192U JPH0583032U (en) 1992-04-20 1992-04-20 Floating matter recovery device

Publications (1)

Publication Number Publication Date
JPH0583032U true JPH0583032U (en) 1993-11-09

Family

ID=12150274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2487192U Pending JPH0583032U (en) 1992-04-20 1992-04-20 Floating matter recovery device

Country Status (1)

Country Link
JP (1) JPH0583032U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0740395U (en) * 1993-12-27 1995-07-18 株式会社呉ダイヤ Water surface cleaning boat for collecting garbage
KR100973347B1 (en) * 2007-05-16 2010-07-30 이혜원 Float Sewage Collector
KR101348308B1 (en) * 2012-02-21 2014-01-16 (주)덕유 Gate recurrent screen device
CN109398629A (en) * 2018-12-25 2019-03-01 郑州大学 Water surface small floating thing clears up ship
CN109501973A (en) * 2018-10-12 2019-03-22 许爱军 Box opening cabin soaking type over-water floats pick-up boat
KR20220048392A (en) * 2020-10-12 2022-04-19 호원대학교산학협력단 Unmanned submarine recovery cage
KR102508205B1 (en) * 2022-12-23 2023-03-09 엘아이지넥스원 주식회사 Cradle of Inlet expansion type and unmanned surface vehicle launch and recovery system including the same
CN116927147A (en) * 2023-08-21 2023-10-24 广东粤电博贺能源有限公司 Marine biological interception device for coastal power plant

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0740395U (en) * 1993-12-27 1995-07-18 株式会社呉ダイヤ Water surface cleaning boat for collecting garbage
KR100973347B1 (en) * 2007-05-16 2010-07-30 이혜원 Float Sewage Collector
KR101348308B1 (en) * 2012-02-21 2014-01-16 (주)덕유 Gate recurrent screen device
CN109501973A (en) * 2018-10-12 2019-03-22 许爱军 Box opening cabin soaking type over-water floats pick-up boat
CN109398629A (en) * 2018-12-25 2019-03-01 郑州大学 Water surface small floating thing clears up ship
CN109398629B (en) * 2018-12-25 2024-01-19 郑州大学 Small-sized floater cleaning boat on water surface
KR20220048392A (en) * 2020-10-12 2022-04-19 호원대학교산학협력단 Unmanned submarine recovery cage
KR102508205B1 (en) * 2022-12-23 2023-03-09 엘아이지넥스원 주식회사 Cradle of Inlet expansion type and unmanned surface vehicle launch and recovery system including the same
CN116927147A (en) * 2023-08-21 2023-10-24 广东粤电博贺能源有限公司 Marine biological interception device for coastal power plant

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