JP2011255875A - Plate claw type anchor - Google Patents
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Abstract
Description
この発明は、一般的にダンフォースアンカーやダンフォース型アンカー等として知られるような板爪型アンカーに関する。 The present invention relates to a plate-claw anchor that is generally known as a Danforth anchor, Danforth anchor or the like.
従来のダンフォース型アンカーは、図１１に示すように、海底に突き刺される左右一対の板爪５２，５２を主体とするブレード体５０と、杵状の先端部に繋留ロープ５４が接続されるシャンク５６とからなり、シャンク５６が板爪５２，５２の間から抜ける上下揺動可能に取り付けられたもので、両板爪５２，５２にはシャンク５６を挟むガイド板５８，５８が溶接され、その突出した後端部において上下連結板６０，６０が溶接され、また、該部に反転を抑制する規制棒６２が貫通して溶接され、連結板６０，６０と規制棒６２とにより、両板爪５２，５２が一体化され、且つ、規制棒６２によりシャンク５６が軸承されていた。 As shown in FIG. 11, the conventional Danforth anchor includes a blade body 50 mainly composed of a pair of left and right plate claws 52, 52 pierced on the seabed, and a shank in which a anchoring rope 54 is connected to a hook-shaped tip. 56, and the shank 56 is attached so that it can swing up and down from between the plate claws 52, 52. Guide plates 58, 58 sandwiching the shank 56 are welded to both the plate claws 52, 52, The upper and lower connecting plates 60, 60 are welded at the protruding rear end portion, and a restriction rod 62 that suppresses inversion is passed through the portion and welded. 52 and 52 are integrated, and the shank 56 is supported by the regulating rod 62.
シャンク３が繋留ロープ５４で上に引かれると、ブレード体５０の重みによりシャンクが連結板６０に突き当たるまで最大限に傾斜する。そこで、船舶から海底に下ろすと海底ではこの姿勢を取り、主に潮の流れにより引きずられながら、その一対の板爪５２，５２が海底に刺さり岩等の障害物に引っかかって係止される。しかしながら、使用を止めるために引き上げるときには、船舶を潮の流れに逆らって進行することになるが、前記姿勢が変化しないので障害物からの引き抜きは困難であった。 When the shank 3 is pulled upward by the anchoring rope 54, the shank 3 is inclined to the maximum by the weight of the blade body 50 until the shank hits the connecting plate 60. Thus, when the ship is lowered from the ship to the seabed, it takes this posture on the seabed, and the pair of plate claws 52, 52 are caught by an obstacle such as a stabbed rock while being dragged mainly by the flow of tide. However, when pulling up to stop the use, the ship moves against the flow of the tide, but since the posture does not change, it is difficult to pull out from the obstacle.
つまり、上記のような従来の板爪型アンカーによれば、障害物から引き抜こうとするときには、繋留ローブで引く力点が依然として最大角度に傾斜したシャンク５６の上端部に位置するために、支点が後端部、つまり下の連結板６０等の箇所に位置することになって、アンカー５０の先端部が障害物を持ち上げる作用点として働き、却って引っ掛かりが強化され決して抜けないロック状態となることもあり、そうなると、諦めて繋留ロープを切断して見放すことも多かった。また、諦めることなく引き上げるために、予備のロープを使うこともあり、そのために、連結板６０，６０に予備のロープを接続する孔６４が開けられていた。しかし、これではロープの多用で作業が複雑となり、場合によっては、両ロープを切断して見捨てる事態を招くこともあった。 In other words, according to the conventional plate-claw type anchor as described above, the force point drawn by the anchoring lobe is still located at the upper end of the shank 56 inclined to the maximum angle when trying to pull out from the obstacle, so that the fulcrum is It is located at the end, that is, at the location of the lower connecting plate 60, etc., so that the tip of the anchor 50 acts as an action point for lifting the obstacle, and on the other hand, the lock is strengthened and the locked state can never be removed. When that happens, I often gave up and cut off the mooring ropes to see them off. Further, in order to pull up without giving up, a spare rope may be used, and for this purpose, a hole 64 for connecting the spare rope to the connecting plates 60, 60 has been opened. However, this makes the work complicated due to heavy use of ropes, and in some cases, both ropes may be cut and thrown away.
この発明は、上記のような実情に鑑みて、繋留ロープだけの使用により、海底の障害物から確実に抜き取ることのできる板爪型アンカーを提供することを課題とした。 This invention made it a subject to provide the plate nail type | mold anchor which can be reliably extracted from the obstruction of a seabed only by using a tether rope in view of the above situations.
上記の課題を解決するために、この発明は、海底に突っ込んでささる上下左右対称形のブレード体と、船舶から下げられる繋留ロープが先端に接続される揺動杵としてそれに装着されるシャンクとからなり、ブレード体は、並列する左右一対の板爪の相対向縁に、シャンクが抜ける間隔で対面するガイド板を溶接するとともに後端部を板爪から突出させ、その両ガイド板の上下後端縁でシャンクを最大傾斜角度で支持する連結板を溶接してなる板爪型アンカーにおいて、シャンクの基端にその両側面に短く揺動軸を一体に突設し、シャンクを最大傾斜角度で保持して案内するための斜辺部を上下対称に備えた、後端に向けて開口する切欠を、両ガイド板に設けるとともに、シャンクを最大傾斜角度で揺動軸が納まる軸受部を切欠の奥端に形成し、該揺動軸の切欠からの離脱でシャンクが接続金具で連結板に掛止するまでガイド板の斜辺部に沿って移動するように構成したことを特徴とする板爪型アンカーを提供する。 In order to solve the above-described problems, the present invention includes a vertically and horizontally symmetrical blade body that thrusts into the seabed, and a shank attached to the anchoring rope that is connected to the tip of a tether rope that is lowered from the ship. The blade body is welded to the opposing edges of a pair of left and right plate claws arranged side by side with a guide plate facing the shank at an interval so that the rear end protrudes from the plate claws. In a plate-claw type anchor that welds a connecting plate that supports the shank at the maximum inclination angle at the edge, a short rocking shaft is integrally projected on both sides of the base end of the shank so that the shank is at the maximum inclination angle. Both guide plates are provided with notches that are symmetrically provided with a hypotenuse for holding and guiding, and that open toward the rear end, and the bearing that houses the swing shaft at the maximum inclination angle is the back of the notch. Formed at the edge To provide a plate claw-type anchor, characterized in that constructed as shank withdrawal from the notch of the swing axis is moved along the inclined portion of the guide plate until engaging the connecting plate in the fitting.
板爪型アンカーを上記のように構成したから、船舶を潮流に任せる使用状態においては、繋留ロープによりシャンクがその方向へ引かれると、連結板の前端縁が支点となって揺動軸が軸受に納まる力を及ぼすので、シャンクを最大傾斜角度に保持して突っ込み体勢が安全に維持される。 Since the plate-claw type anchor is configured as described above, when the shank is pulled in that direction by the anchoring rope in the state of use in which the ship is left to the tidal current, the front end edge of the connecting plate serves as a fulcrum, and the swing shaft is a bearing Therefore, the shank is kept at the maximum inclination angle and the thrusting posture is maintained safely.
しかし、海底から引き上げるために船舶を潮流と逆方向に進行させると、シャンクが最大傾斜角度を保持して連結板の下方まで後退し、繋留ロープが接続される接続金具がブレード体の後端に引っ込み連結板に掛止し、この状態では連結板の部分を繋留ロープで後方へ引くことになるので障害物からブレード体が難なく引き抜かれることになる。 However, when the ship is moved in the opposite direction to the tidal current to lift it from the seabed, the shank moves backward to the lower side of the connecting plate while maintaining the maximum inclination angle, and the connecting fitting to which the tethering rope is connected is attached to the rear end of the blade body. In this state, it is hooked on the retracting connecting plate, and in this state, the connecting plate portion is pulled backward by the anchoring rope, so that the blade body can be pulled out from the obstacle without difficulty.
以上説明したように、この発明の板爪型アンカーによれば、船舶の移動により繋留ロープで障害物から引く抜く力を加えると、繋留ロープとの接続箇所が、シャンクが最大傾斜角度を保持してブレード体の後端部に移動し、その部分で後方へ引き抜く力がそのままブレード体に及ぼすことになるため、障害物から解放して海底からの引き上げを確実になし、繋留ロープを見放す不経済で不都合な事態を確実に避けることができという優れた効果がある。 As described above, according to the plate-claw type anchor of the present invention, when a force for pulling out from an obstacle with a mooring rope is applied by the movement of a ship, the shank holds the maximum inclination angle at the connection point with the mooring rope. Because it moves to the rear end of the blade body, and the force with which it pulls out rearward is applied to the blade body as it is, it is uneconomical to release from the obstacles and make sure to pull up from the seabed and to leave the tethered rope It has an excellent effect of reliably avoiding inconvenient situations.
加えて、請求項２も、シャンクが最大傾斜角度を保持した体勢で下方まで移動するので、より引き抜き易くなり、また請求項３によれば、使用中に反転速度を遅延させ、より早く機能させる利点を有し、また請求項４によれば、使用中においてシャンクの姿勢が保持されるので、海底の障害物からブレード体が意に反して自然に引き抜かれるような不測の事態を防止できる効果がある。 In addition, since the shank moves downward with the posture maintaining the maximum inclination angle, it is easier to pull out the shank, and according to claim 3, the reversing speed is delayed during use and the function is made faster. Further, according to the fourth aspect of the present invention, since the posture of the shank is maintained during use, it is possible to prevent an unexpected situation in which the blade body is naturally pulled out from an obstacle on the seabed. There is.
この発明は、ブレード体1とそれに上下にわたって揺動可能に取り付けられるシャンク３とからなるもので、シャンク３をその長手方向にも移動可能にするために、その基端に揺動軸７を一体に設ける一方、シャンク３を挟むガイド板１５の後端部に形成した切欠１１により、揺動軸７の軸受９を、その奥端に形成した。この切欠１１は、シャンク３を最大傾斜角度で保持して案内するための斜辺部を備え、揺動軸７を受け入れやすく、離脱しやすい形状であれば、その形状を特に限定するものではない。 The present invention comprises a blade body 1 and a shank 3 attached to the blade body 1 so as to be swingable in the vertical direction. In order to make the shank 3 movable in its longitudinal direction, a swing shaft 7 is integrally formed at the base end thereof. On the other hand, the bearing 9 of the swing shaft 7 is formed at the back end thereof by a notch 11 formed at the rear end portion of the guide plate 15 sandwiching the shank 3. The cutout 11 is not particularly limited as long as it has a hypotenuse for holding and guiding the shank 3 at the maximum inclination angle and can easily accept the swing shaft 7 and can be easily detached.
図1ないし図4は一実施例を示したもので、その板爪型アンカーPは、所謂ダンフォースアンカー又はダンフォース型アンカーと称されるようなアンカーの改良に係わるもので、左右一対の板爪２，２が並列するブレード体1と、それに前後移動および揺動可能に装着されるシャンク3とからなる。そのため、シャンク3と一体にその揺動軸7を設け、ブレード体１には、それを離脱可能に納まる軸受部９が切欠１１により設けられる。この切欠１１は、シャンク３を最大傾斜角度で保持して案内するための斜辺部を上下対称に備えている。また、シャンク３には、先端に繋留ロープ１０が接続されるU字形の接続金具１６が取り付けられる。 FIG. 1 to FIG. 4 show an embodiment, and the plate claw-type anchor P is related to the improvement of an anchor called a so-called Danforth anchor or Danforth-type anchor. It consists of a blade body 1 in which the claws 2 and 2 are arranged in parallel, and a shank 3 attached to the blade body 1 so as to be able to move back and forth and swing. Therefore, the rocking shaft 7 is provided integrally with the shank 3, and the blade body 1 is provided with a bearing portion 9 that is detachably accommodated by the notch 11. This notch 11 is provided with a hypotenuse symmetrically for holding and guiding the shank 3 at the maximum inclination angle. The shank 3 is attached with a U-shaped fitting 16 to which the anchoring rope 10 is connected at the tip.
シャンク３は揺動軸７を中心に上下両面にわたって反転可能に軸支され、最大傾斜角度（図１、図３参照)においてアンカー機能が発揮されるようなっているが、そのとき揺動軸７は切欠１１奥端の軸受部９に止められ、シャンク３が上の連結板１７の後端縁とで掛止、固定されている。なお、ブレード体１の後端では左右一対に規制棒５，５を備えているが、これは板爪２，２に溶接されることにより外側へ突出している。 The shank 3 is pivotally supported so as to be able to be reversed over both the upper and lower surfaces around the swing shaft 7, and the anchor function is exhibited at the maximum inclination angle (see FIGS. 1 and 3). Is fixed to the bearing portion 9 at the back end of the notch 11, and the shank 3 is hooked and fixed to the rear end edge of the upper connecting plate 17. Note that the rear end of the blade body 1 is provided with a pair of right and left regulating rods 5 and 5, which protrude outward by being welded to the plate claws 2 and 2.
ブレード体１は、幅中央にシャンク３が上下に揺動可能となるように、両板爪２，２の相対向縁にシャンク３を移動可能に挟むガイド板１５，１５を対面して溶接し、上下の連結板１７，１７により両板爪２，２を連結して一体化されるが、両連結板１７，１７の後端には、シャンク３の最大傾斜角度を規制するため凹部２４が形成される。 The blade body 1 is welded by facing guide plates 15 and 15 that sandwich the shank 3 movably between the opposing edges of both plate claws 2 and 2 so that the shank 3 can swing up and down in the center of the width. The upper and lower connecting plates 17, 17 are integrated by connecting the two plate claws 2, 2. At the rear ends of the connecting plates 17, 17, a recess 24 is provided to restrict the maximum inclination angle of the shank 3. It is formed.
両板爪２，２は、板材であって内側縁が相互に平行であるが、概略楔形であって、後端に規制棒５，５が同軸に溶接される。この規制棒５，５は、ブレード体１が左右方向に回転して反転する速度を遅延させ、より早く機能させる利点を有する。従来のものと比較すると、両規制棒５，５が一体ではなく左右に別々に分離されており、シャンク３の軸の機能を果たすものではないという点が異なっている。軸の機能はシャンク３と一体の前記揺動軸７により果たされるが、これが規制棒５，５と同軸に並んで納まるようになっている。 Both plate claws 2 and 2 are plate materials and the inner edges are parallel to each other, but are substantially wedge-shaped, and the control rods 5 and 5 are coaxially welded to the rear ends. The restriction rods 5 and 5 have the advantage of delaying the speed at which the blade body 1 rotates and reverses in the left-right direction, thereby allowing the blade body 1 to function faster. Compared with the conventional one, the difference is that the regulating rods 5 and 5 are not integrated but separated to the left and right and do not fulfill the function of the shaft of the shank 3. The function of the shaft is performed by the rocking shaft 7 integral with the shank 3, but this is arranged so as to be coaxial with the regulating rods 5 and 5.
ガイド板１５，１５は、前端に向けて幅狭となる板爪２，２を境にして上下対称の楔形であって(図２参照)、板爪２，２よりも後端部が突出し、その突出した後端部に切欠１１を、後端に向けて開口する形状に形成し、その奥端が軸受９となっている。また、切欠１１が揺動軸７の受け入れ口として拡張して開口される。そこで、繋留ロープ１０で後ろへ引かれると、切欠１１の斜辺部に沿って揺動軸７が外れることで、シャンク３が最大傾斜角度で保持されて下方へ移動する。 The guide plates 15 and 15 have wedge shapes that are vertically symmetrical with respect to the plate claws 2 and 2 that become narrower toward the front end (see FIG. 2), and the rear end portions protrude from the plate claws 2 and 2, A notch 11 is formed in the protruding rear end portion so as to open toward the rear end, and the rear end thereof is a bearing 9. Further, the notch 11 is expanded and opened as a receiving port for the swing shaft 7. Therefore, when pulled backward by the tethering rope 10, the swing shaft 7 comes off along the oblique side portion of the notch 11, so that the shank 3 is held at the maximum inclination angle and moves downward.
凹部２４により、ブレード体１を引き抜く際、シャンク３を最大傾斜角度を保持した体勢で下部連結板１７の下方まで移動させることができる。 When the blade body 1 is pulled out by the recess 24, the shank 3 can be moved to the lower side of the lower connecting plate 17 with a posture that maintains the maximum inclination angle.
板爪型アンカーPは上記の構造であるので、最初に船舶から下ろしたときに、船舶が潮の流れにより移動すると、その方向へ繋留ロープ１０で引かれ、シャンク３が連結板の一端縁と切欠１１の傾斜部とで支持されて傾斜部に沿って最大傾斜角度を維持しながら、ブレード体１が海底に突っ込み、あるいは岩石２０等の障害物に引っかかって、アンカーとしての機能を発揮する(図３参照)。 Since the plate claw-type anchor P has the above-described structure, when the ship is moved down by the flow of the tide when it is first lowered from the ship, the anchor rope 10 is pulled in that direction, and the shank 3 is connected to one end edge of the connecting plate. While being supported by the inclined portion of the notch 11 and maintaining the maximum inclination angle along the inclined portion, the blade body 1 thrusts into the seabed or is caught by an obstacle such as a rock 20 and exhibits the function as an anchor ( (See FIG. 3).
次に、引き上げるときに、岩石２０からの引っ掛かりを解除するために船舶の進行により逆方向へ繋留ロープ１０が引かれると（図４参照）、揺動軸７が軸受部９から外れ、シャンク３が切欠１１の傾斜に沿って最大傾斜角度を維持しながら、上下連結板１７，１７の間から後方へ引き出され、繋留ロープ１０で直接引かれる接続金具が上の連結板１７に突き当たり、この状態では後ろ引きの力が加わるために、ブレード体１が岩石２０から容易に脱出する。 Next, when the anchoring rope 10 is pulled in the reverse direction by the movement of the ship to release the catch from the rock 20 when it is pulled up (see FIG. 4), the rocking shaft 7 comes off from the bearing portion 9, and the shank 3 While the maximum inclination angle is maintained along the inclination of the notch 11, the connection fitting that is drawn backward from between the upper and lower connection plates 17, 17 and directly pulled by the anchoring rope 10 hits the upper connection plate 17, and this state Then, since the pulling force is applied, the blade body 1 easily escapes from the rock 20.
図５および図６は、切欠１１の後端部となる両連結板１７，１７および両ガイド板１５の先端部を垂直に切断した短尺な形状とし、切欠１１を２段開口形にした場合を示す。本実施例の如く切欠１１を２段開口形にすると、軸受９に揺動軸７を止めておくことは難しい。そこで、揺動軸７を保持するために紐類２１で仮止めすることとして、ガイド板１５，１５にその通し孔２３，２３を設けた。 5 and 6 show a case where the connecting plates 17 and 17 which are the rear end portions of the notch 11 and the front ends of the guide plates 15 are cut into a short shape, and the notch 11 has a two-stage opening shape. Show. If the notch 11 has a two-stage opening as in this embodiment, it is difficult to hold the swing shaft 7 to the bearing 9. Therefore, the guide plates 15 and 15 are provided with through holes 23 and 23 as temporarily fixed with the strings 21 in order to hold the swing shaft 7.
したがって、海底から引き上げるときに、船舶でその方向へ引くと(図３参照)、その引きの力で紐類２１が引き千切られることにより、軸受９から揺動軸７が抜けるため、障害物による繋留状態が安定して確保されるとともに、引き上げ易くなる。 Therefore, when pulling up from the seabed in the direction of the ship (see FIG. 3), the string 21 is torn off by the pulling force, so that the rocking shaft 7 comes off from the bearing 9 and is therefore obstructed. The tethered state can be secured stably and can be easily lifted.
本例の如く、切欠１１先端部を垂直に切断した短尺な形状とすることにより、短尺となり、材料費の節減ができる。 As in this example, by forming a short shape by vertically cutting the front end of the notch 11, the length becomes short and material costs can be reduced.
図７および図８は、切欠１１の後端部となる両連結板１７，１７の前後端に凹部２４をそれぞれ形成した場合を示す。本実施例の如く凹部２４を形成すると、上下連結板１７の面積を広くすることができ、水中での体勢を安定させ易くなる。 7 and 8 show a case where the recesses 24 are respectively formed at the front and rear ends of both connecting plates 17 and 17 which are the rear end portions of the notch 11. When the recess 24 is formed as in this embodiment, the area of the upper and lower connecting plates 17 can be increased, and the posture in water can be easily stabilized.
図９および図１０は、両連結板１７，１７に凹部２４を形成させることなく、短尺な形状とした場合を示す。本実施例も前例と同様の効果を得ることができる。 9 and 10 show a case where the connecting plates 17 and 17 are formed in a short shape without forming the recesses 24 in the connecting plates 17 and 17. This embodiment can also obtain the same effect as the previous example.
P 板爪型アンカー
・ ブレード体
２ 板爪
３ シャンク
５ 規制棒
７ 揺動軸
９ 軸受
１０ 繋留ロープ
１１ 切欠
１５ ガイド板
１６ 接続金具
１７ 連結板
２０ 障害物としての岩石
２１ 紐類
２３ 通し孔
２４ 凹部
P plate claw type anchor / blade body 2 plate claw 3 shank 5 regulating rod 7 rocking shaft 9 bearing 10 anchoring rope 11 notch 15 guide plate 16 connecting bracket 17 connecting plate 20 rock 21 as an obstacle string 23 through hole 24 recess
Claims (4)
A string through-hole is provided at the rear end of the guide plate to temporarily fix the swinging shaft with the string so that the swing shaft does not escape from the bearing portion in the thrusting posture of the blade body. Or the board nail type anchor of 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010155323A JP5592180B2 (en) | 2010-05-10 | 2010-07-08 | Plate claw anchor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010107848 | 2010-05-10 | ||
| JP2010107848 | 2010-05-10 | ||
| JP2010155323A JP5592180B2 (en) | 2010-05-10 | 2010-07-08 | Plate claw anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011255875A true JP2011255875A (en) | 2011-12-22 |
| JP5592180B2 JP5592180B2 (en) | 2014-09-17 |
Family
ID=45472528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010155323A Expired - Fee Related JP5592180B2 (en) | 2010-05-10 | 2010-07-08 | Plate claw anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5592180B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108674585B (en) * | 2018-06-29 | 2020-04-21 | 合肥学院 | Flat plate anchor with rotating plate arranged at bottom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0493293U (en) * | 1990-12-28 | 1992-08-13 | ||
| JPH05155377A (en) * | 1991-12-05 | 1993-06-22 | Shigeru Manabe | Releasing device for hooked anchor |
| JP3077688U (en) * | 2000-11-14 | 2001-05-29 | 重男 石井 | Anchoring anchor |
-
2010
- 2010-07-08 JP JP2010155323A patent/JP5592180B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0493293U (en) * | 1990-12-28 | 1992-08-13 | ||
| JPH05155377A (en) * | 1991-12-05 | 1993-06-22 | Shigeru Manabe | Releasing device for hooked anchor |
| JP3077688U (en) * | 2000-11-14 | 2001-05-29 | 重男 石井 | Anchoring anchor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5592180B2 (en) | 2014-09-17 |
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