JP5759944B2 - Floating fish anchor collection method and collection basket used in the collection method - Google Patents

Floating fish anchor collection method and collection basket used in the collection method Download PDF

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JP5759944B2
JP5759944B2 JP2012138598A JP2012138598A JP5759944B2 JP 5759944 B2 JP5759944 B2 JP 5759944B2 JP 2012138598 A JP2012138598 A JP 2012138598A JP 2012138598 A JP2012138598 A JP 2012138598A JP 5759944 B2 JP5759944 B2 JP 5759944B2
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anchor
floating fish
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fish reef
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潔 北野
潔 北野
昭憲 宇都宮
昭憲 宇都宮
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岡部株式会社
長浜産業株式会社
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    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

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Description

本発明は、海底に置かれた浮魚礁用アンカーを表層まで引上げて回収する浮魚礁用アンカーの回収方法、およびその回収方法で使用する回収カゴに関する。   The present invention relates to a method for recovering an anchor for floating fish reef that is pulled up to the surface layer and recovers it, and a recovery basket that is used in the recovery method.

浮魚礁用アンカーの回収方法として、例えば、回収索に連結された回収用金具を無人潜水機により海中へ運び、浮魚礁と浮魚礁用アンカーとを結ぶ係留索に結合して無人潜水機を引上げた後、回収索をウインチで引上げる方法（例えば、特許文献１参照。）や、浮魚礁用アンカーが連結された浮魚礁を回収具等に結合して引上げる方法が提案されている（例えば、特許文献２参照。）。   As a method for collecting anchors for floating fish reefs, for example, the metal fittings connected to the recovery ropes are transported to the sea by an unmanned submersible, and the unmanned submersible is lifted by connecting to a mooring line connecting the floating fish reef and the anchors for floating fish After that, a method of pulling up the recovery rope with a winch (see, for example, Patent Document 1) and a method of pulling up a floating reef coupled with a floating fish reef anchor to a recovery tool or the like have been proposed (for example, , See Patent Document 2).

特開２０１０−２０７１０６号公報JP 2010-207106 A 特許第４８３８９０６号公報Japanese Patent No. 4838906

しかし、前述の特許文献１，２の浮魚礁用アンカーの回収方法では、浮魚礁と共に浮魚礁用アンカーをウインチが回収索を巻上げて回収するものであるが、浮魚礁用アンカーは重量があり、また海上は波があること等から、表層まで引上げてきた浮魚礁用アンカーを作業船上に安全かつ確実に回収することは、非常に困難であった。   However, in the method for recovering the floating fish reef anchor described in Patent Documents 1 and 2 above, the winch winds up and collects the floating fish reef anchor together with the floating fish reef, but the floating fish reef anchor is heavy, In addition, because of the waves on the sea, it was very difficult to safely and reliably collect the floating fish reef anchors that had been pulled up to the surface.

そこで、本発明は、このような問題点に着目してなされたもので、表層まで引上げてきた浮魚礁用アンカーを安全かつ確実に作業船上に回収することができる浮魚礁用アンカーの回収方法、およびその回収方法で使用する回収カゴを提供することを目的とする。   Therefore, the present invention was made paying attention to such problems, and a method for recovering an anchor for floating fish reef that can safely and reliably recover the anchor for floating fish reef raised up to the surface layer, It is another object of the present invention to provide a collection basket used in the collection method.

上記目的を達成するため、本発明に係る浮魚礁用アンカーの回収方法は、海底に置かれた浮魚礁用アンカーを表層まで引上げて回収する浮魚礁用アンカーの回収方法において、回収索を浮魚礁用アンカーに掛止してその回収索を巻上げることにより、浮魚礁用アンカーを海底から表層まで引上げると共に、表層まで引上げた浮魚礁用アンカーをクレーンから吊下げた回収カゴに収容し、浮魚礁用アンカーを収容した回収カゴをクレーンによって吊上げ回収することを特徴とする。
また、本発明に係るその浮魚礁用アンカーの回収方法で使用する回収カゴは、底部と、左右両側の側部と、後部とを有しており、左右両側の側部の上部における長手方向の前後両側には、それぞれカゴ吊下げ用ロープを連結するための吊り孔金具が設けられており、カゴ吊下げ用ロープの前後の長さを同じにして各吊り孔金具に連結した場合、回収カゴが前上がりの状態で吊下げられるように、後部側の吊り孔金具は開口部側の吊り孔金具よりも長く、その孔位置が高い位置に設けられていることを特徴とする。 In order to achieve the above object, a method for recovering an anchor for floating fish reef according to the present invention includes a method for recovering an anchor for floating fish reef that is pulled up to the surface and recovers the anchor for floating fish reef. The anchors are hooked on the anchors and the recovery ropes are wound up to raise the floating fish anchors from the sea floor to the surface layer. It is characterized in that a collection basket containing a reef anchor is lifted and collected by a crane.
Further, the recovery basket used in the method for recovering the floating fish reef anchor according to the present invention has a bottom portion, left and right side portions, and a rear portion, and a longitudinal direction at the upper portion of the left and right side portions. Hanging holes are provided on both the front and rear sides to connect the basket suspension ropes. When the front and rear lengths of the basket suspension ropes are the same, they are connected to each suspension hole bracket. The suspension hole fitting on the rear side is longer than the suspension hole fitting on the opening side, and the hole position is high.

本発明に係る浮魚礁用アンカーの回収方法によれば、表層まで引上げてきた浮魚礁用アンカーはクレーンから吊下げた回収カゴに収容し、浮魚礁用アンカーを収容した回収カゴをクレーンによって吊上げて回収するため、浮魚礁用アンカーを安全かつ確実に作業船上に回収することができる。また、本発明に係るその回収方法で使用する回収カゴによれば、吊下げ用ロープの前後の長さを同じにして各吊り孔金具に連結した場合、回収カゴが前上がりの状態で吊下げられるため、波などによりクレーンや回収カゴ等が揺れたとしても、浮魚礁用アンカーは回収カゴの中から飛び出し難くなり、この点でも、安全かつ確実に浮魚礁用アンカーを回収できる。   According to the method for collecting an anchor for floating fish reef according to the present invention, the anchor for floating fish reef that has been pulled up to the surface layer is accommodated in a collection basket that is suspended from a crane, and the collection basket that accommodates the anchor for floating fish reef is suspended by a crane. Since it is collected, the floating reef anchor can be safely and reliably collected on the work boat. Further, according to the collection basket used in the collection method according to the present invention, when the front and rear lengths of the hanging rope are the same and are connected to the respective suspension hole fittings, the collection basket is suspended in a state of rising upward. Therefore, even if the crane or the collection basket sways due to waves or the like, it is difficult for the floating fish anchor to jump out of the collection basket. In this respect, the floating fish anchor can be collected safely and securely.

浮魚礁用アンカーを表層まで吊上げた状態を示す図である。It is a figure which shows the state which lifted the anchor for floating fish reef to the surface layer. クレーンに回収カゴを吊下げた状態を示す図である。It is a figure which shows the state which suspended the collection basket on the crane. クレーンで回収カゴを海中に下ろした状態を示す図である。It is a figure which shows the state which dropped the collection basket into the sea with the crane. 回収カゴ内に浮魚礁用アンカーを収容した状態を示す図である。It is a figure which shows the state which accommodated the anchor for floating fish reef in the collection basket. 回収カゴの斜視図である。It is a perspective view of a collection basket. 回収カゴを前上がりの状態で吊下げた状態を示す図である。It is a figure which shows the state which suspended the collection basket in the state of rising up. （ａ），（ｂ）それぞれ、回収カゴに船上から固定索を結合した状態を示す概略平面図である。(A), (b) is a schematic top view which respectively shows the state which couple | bonded the fixed rope from the ship with the collection basket.

次に、本発明に係る浮魚礁用アンカーの回収方法、およびこの回収方法で使用する回収カゴの実施形態について図面を参照して説明する。   Next, an embodiment of a method for recovering an anchor for floating fish reef according to the present invention and a recovery basket used in this recovery method will be described with reference to the drawings.

この浮魚礁用アンカーの回収方法では、まず、図１に示すように、海底に置かれた浮魚礁用アンカー１に回収索４１を連結し、ガイドローラー２３を介しウインチ２２等により巻上げて、海洋の表層まで引き揚げる。ここで、浮魚礁用アンカー１への回収索４１の連結は、浮魚礁用アンカー１が深い海底に沈んでいる場合には、前述の特許文献１に開示されている図示しない無人潜水機（ＲＯＶ）等により連結する一方、浅い海底に沈んでいる場合には、潜水士等により連結する。なお、浮魚礁用アンカー１は、図示しない中層浮魚礁等に係留索を介して連結されて海底に沈んでいる場合でも、中層浮魚礁から切り離されて海底に沈んでいる場合のどちらの場合にも適用可能である。   In this floating fish reef anchor recovery method, first, as shown in FIG. 1, a recovery rope 41 is connected to the floating fish reef anchor 1 placed on the seabed, wound up by a winch 22 or the like via a guide roller 23, and Pull up to the surface. Here, the connection of the recovery rope 41 to the floating reef anchor 1 is performed when the floating reef anchor 1 is submerged in the deep sea floor and is not shown in the above-mentioned Patent Document 1 and is not shown in the figure. ), Etc., but if it is sinking on a shallow seabed, it will be connected by a diver. The floating fish reef anchor 1 is connected to a not-shown middle-floating fish reef via a mooring cable and sinks to the seabed, or is separated from the middle-floating fish reef and sinks to the seabed. Is also applicable.

浮魚礁用アンカー１が表層まで引上げられると、次に、作業者が作業船２上に設置したクレーン２１を動作させて、図２に示すように、ガゴ昇降用ロープ４２ａ、カゴ吊下げ用ロープ４２ｂおよび吊下げフック４３を介して回収カゴ３を吊上げて、作業船２上から海上へ運ぶ。   When the floating fish reef anchor 1 is pulled up to the surface layer, the operator then operates the crane 21 installed on the work boat 2, and as shown in FIG. 2, the cage lifting rope 42a, the basket hanging rope The collection basket 3 is lifted through the hanger 42b and the hanging hook 43 and is carried from the work boat 2 to the sea.

そして、図３に示すように、クレーン２１により回収カゴ３を作業船２上から海中に降ろし、図４に示すように、クレーン２１の操作により回収カゴ３を浮魚礁用アンカー１の方へ移動させ、回収カゴ３の中に浮魚礁用アンカー１を収容する。   Then, as shown in FIG. 3, the collection basket 3 is lowered from the work ship 2 into the sea by the crane 21, and as shown in FIG. 4, the collection basket 3 is moved toward the floating fish reef anchor 1 by operating the crane 21. And the floating fish reef anchor 1 is accommodated in the collection basket 3.

回収カゴ３は、図５に示すように、例えば、Ｈ型鋼等を縦横に溶接などしてカゴ状に組まれたもので、作業船２によって表層まで引上げた浮魚礁用アンカー１を回収カゴ３の中に収容して吊上げることができるよう、浮魚礁用アンカー１より一回り大きい左右両側の側部３１，３２と、後部３３と、底部３４とを有している。例えば、左右両側の側部３１，３２間の内幅は、浮魚礁用アンカー１の幅に対して１〜２ｍプラスした程度であり、回収カゴ３の底部３４の奥行きも浮魚礁用アンカー１の奥行きに対して１〜２ｍプラスした程度の長さで、両側部３１，３２および後部３３の高さは、浮魚礁礁用アンカー１の高さの１．２〜２．０倍程度としている。   As shown in FIG. 5, the collection basket 3 is assembled in a cage shape by welding, for example, H-shaped steel or the like horizontally and vertically, and the floating fish reef anchor 1 pulled up to the surface by the work ship 2 is collected in the collection basket 3. It has side portions 31 and 32 on both the left and right sides that are slightly larger than the floating fish reef anchor 1, a rear portion 33, and a bottom portion 34. For example, the inner width between the left and right side portions 31 and 32 is about 1 to 2 m larger than the width of the floating fish reef anchor 1, and the depth of the bottom 34 of the recovery cage 3 is also the same as that of the floating fish reef anchor 1. The height of the side portions 31 and 32 and the rear portion 33 is about 1.2 to 2.0 times the height of the anchor 1 for floating fish reef.

また、底部３４を構成するＨ型鋼３４１〜３４４の先端部には、図５に示すように、回収カゴ３内にいったん収容した浮魚礁用アンカー１が脱落しないように、上方に０．３〜０．５ｍ程度突出した凸部３４１ａ〜３４４ａが設けられている。このため、波などで揺れた場合でも、回収カゴ３内に一旦収容した浮魚礁用アンカー１が脱落することを防止でき、波のある海上でも、確実に浮魚礁用アンカー１を回収できる。   Further, as shown in FIG. 5, the tip of each of the H-shaped steels 341 to 344 constituting the bottom portion 34 is 0.3 to above so that the floating fish reef anchor 1 once accommodated in the collection basket 3 does not fall off. Protrusions 341a to 344a protruding about 0.5 m are provided. For this reason, even if it shakes with a wave etc., it can prevent that the anchor 1 for floating fish reef once accommodated in the collection | recovery basket 3 can be dropped, and the anchor 1 for floating fish reef can be reliably collect | recovered also on the sea with a wave.

また、左右両側の側部３１，３２の上部におけるＨ型鋼３１１，３２１の上側面の後部３３側には、図５に示すように、断面コ字状の上部押さえ材３５が設けられている。そのため、回収カゴ３内にいったん浮魚礁用アンカー１を収容した後、波などの影響で回収カゴ３が海中で揺れたりして、回収カゴ３の中で浮魚礁用アンカー１が移動しても、上部押さえ材３５が浮魚礁用アンカー１の後部を上方から押さえるので、この点でも、浮魚礁用アンカー１の脱落を防止できる。   Further, as shown in FIG. 5, an upper pressing member 35 having a U-shaped cross section is provided on the rear portion 33 side of the upper surface of the H-shaped steels 311 and 321 at the upper portions of the left and right side portions 31 and 32. Therefore, even if the floating fish reef anchor 1 is once accommodated in the recovery cage 3, the recovery cage 3 is shaken in the sea due to the influence of waves or the like, and the floating fish reef anchor 1 moves in the recovery cage 3. Since the upper pressing member 35 presses the rear portion of the floating fish reef anchor 1 from above, the floating fish reef anchor 1 can be prevented from falling off.

さらに、左右両側の側部３１，３２の上部Ｈ型鋼３１１，３２１の上側面における長手方向の前後両側には、図５に示すように、それぞれ、カゴ吊下げ用ロープ４２ｂを連結するための吊り孔金具３１１ａ，３１１ｂ、３２１ａ，３２１ｂが設けられている。ここで、後部３３側の吊り孔金具３１１ｂ，３２１ｂは、開口部側の吊り孔金具３１１ａ，３２１ａよりも長くして、その孔位置を上方の高い位置に設けている。そのため、吊り孔金具３１１ａ，３１１ｂ、３２１ａ，３２１ｂに連結するカゴ吊下げ用ロープ４２ｂの前後の長さを同じにして回収カゴ３を吊上げた場合には、その孔位置の高さの差の分だけ、回収カゴ３は前上がりの状態で吊下げられることになる。その結果、図４に示すように回収カゴ３の中に浮魚礁用アンカー１を収容すると、回収カゴ３の中に収容された浮魚礁用アンカー１は、回収カゴ３の中で開口部側よりも後部３３側に移動し易くなるので、波などによりクレーン２１や回収カゴ３等が揺れたとしても、回収カゴ３の開口部から飛び出し難くなり、この点でも、確実に浮魚礁用アンカー１を回収できる。   Further, as shown in FIG. 5, suspensions for connecting a basket suspension rope 42 b to the longitudinal front and rear sides of the upper side surfaces of the upper H-shaped steels 311, 321 of the left and right side portions 31, 32, respectively. Hole fittings 311a, 311b, 321a, 321b are provided. Here, the suspension hole metal fittings 311b and 321b on the rear portion 33 side are longer than the suspension hole metal fittings 311a and 321a on the opening side, and the hole positions are provided at higher positions on the upper side. Therefore, when the collection basket 3 is lifted with the same length before and after the cage hanging rope 42b connected to the hanging hole fittings 311a, 311b, 321a, 321b, the difference in height of the hole positions is increased. Only the collection basket 3 is suspended in a state of rising upward. As a result, as shown in FIG. 4, when the floating fish reef anchor 1 is accommodated in the recovery cage 3, the floating fish reef anchor 1 accommodated in the recovery cage 3 is opened from the opening side in the recovery cage 3. Since it is easy to move to the rear portion 33 side, even if the crane 21 or the collection basket 3 is shaken by a wave or the like, it is difficult to jump out from the opening of the collection basket 3. Can be recovered.

なお、より安定した状態で回収カゴ３を使用して浮魚礁用アンカー１を回収するためには、図７（ａ）に示すように、回収カゴ３の両側部３１，３２の前端部に、その一端が作業船２上の別のウインチ２４，２４に連結された固定索４４ａ，４４ａの他端を連結し、浮魚礁用アンカー１を収容した回収カゴ３をクレーン２１が引上げる際に、回収カゴ３が揺れないよう固定して補助しても良い。また、図７（ｂ）に示すように、回収カゴ３の後部３３に、その一端が補助作業船５に連結された固定索４４ｂの他端を連結し、固定索４４ａ，４４ａおよび固定索４４ｂを使用した３点支持により回収カゴ３が揺れないよう固定して補助することもできる。   In order to recover the floating fish reef anchor 1 using the recovery basket 3 in a more stable state, as shown in FIG. 7 (a), the front ends of the side portions 31, 32 of the recovery basket 3 are When the crane 21 pulls up the recovery cage 3 containing the anchor 1 for floating fish reef, one end of which is connected to the other end of the fixed ropes 44a, 44a connected to the other winches 24, 24 on the work boat 2, The recovery basket 3 may be fixed and supported so as not to shake. Further, as shown in FIG. 7B, the other end of the fixed cable 44b whose one end is connected to the auxiliary work ship 5 is connected to the rear portion 33 of the recovery basket 3, and the fixed cables 44a and 44a and the fixed cable 44b are connected. The collection basket 3 can be fixed and assisted so as not to be shaken by the three-point support using.

１…浮魚礁用アンカー、２…作業船、２１…クレーン、２２…ウインチ、２３…ガイドローラー、２４…ウインチ、３…回収カゴ、４１…回収索、４２ａ…ガゴ昇降用ロープ、４２ｂ…カゴ吊下げ用ロープ、４３…吊下げフック、４４ａ，４４ｂ…固定索、５…補助作業船。   DESCRIPTION OF SYMBOLS 1 ... Anchor for floating fish reef, 2 ... Work ship, 21 ... Crane, 22 ... Winch, 23 ... Guide roller, 24 ... Winch, 3 ... Collection basket, 41 ... Collection rope, 42a ... Gago raising / lowering rope, 42b ... Basket hanging Rope for lowering, 43 ... Hanging hooks, 44a, 44b ... Fixing rope, 5 ... Auxiliary work ship.

Claims (2)

海底に置かれた浮魚礁用アンカーを表層まで引上げて回収する浮魚礁用アンカーの回収方法において、
回収索を浮魚礁用アンカーに掛止してその回収索を巻上げることにより、浮魚礁用アンカーを海底から表層まで引上げると共に、表層まで引上げた浮魚礁用アンカーをクレーンから吊下げた回収カゴに収容し、浮魚礁用アンカーを収容した回収カゴをクレーンによって吊上げることによって回収することを特徴とする浮魚礁用アンカーの回収方法。 In the recovery method of the floating fish reef anchor that pulls the floating fish anchor placed on the seabed to the surface layer and collects it,
The recovery rope is hooked on a floating reef anchor and the recovery rope is wound up, whereby the floating reef anchor is pulled up from the sea floor to the surface layer, and the floating reef anchor lifted up to the surface layer is suspended from the crane. A method for recovering an anchor for floating fish reef, wherein the anchor is recovered by lifting the recovery cage containing the anchor for floating fish reef with a crane. 請求項１記載の浮魚礁用アンカーの回収方法で使用する回収カゴであって、
底部と、左右両側の側部と、後部とを有しており、左右両側の側部の上部における長手方向の前後両側には、それぞれカゴ吊下げ用ロープを連結するための吊り孔金具が設けられており、カゴ吊下げ用ロープの前後の長さを同じにして各吊り孔金具に連結した場合、回収カゴが前上がりの状態で吊下げられるように、後部側の吊り孔金具は開口部側の吊り孔金具よりも長く、その孔位置が高い位置に設けられていることを特徴とする浮魚礁用アンカーの回収方法で使用する回収カゴ。 A collection basket used in the method for collecting an anchor for floating fish reef according to claim 1,
It has a bottom part, left and right side parts, and a rear part, and hanging hole fittings are provided on both the front and rear sides in the longitudinal direction at the upper part of the left and right side parts for connecting the basket suspension rope. When the basket hanging ropes are connected to each hanging hole fitting with the same length before and after the rope for hanging the basket, the hanging hole fitting on the rear side is the A recovery basket for use in a method for recovering an anchor for floating fish reef, characterized in that it is longer than the side suspension hole fitting and is provided at a high position.
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