JPH0210758B2 - - Google Patents
Info
- Publication number
- JPH0210758B2 JPH0210758B2 JP9183084A JP9183084A JPH0210758B2 JP H0210758 B2 JPH0210758 B2 JP H0210758B2 JP 9183084 A JP9183084 A JP 9183084A JP 9183084 A JP9183084 A JP 9183084A JP H0210758 B2 JPH0210758 B2 JP H0210758B2
- Authority
- JP
- Japan
- Prior art keywords
- anchor
- pressure sensor
- cable
- claw portion
- holding force
- 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
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
この発明は船舶や海洋構造物等の錨の把駐力を
検知する方法及びその装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and apparatus for detecting the holding force of an anchor of a ship, marine structure, etc.
＜従来の技術＞
錨の把駐力は、従来室内や実海域において実験
的に求められていた。しかし、実際に投錨する海
域の底質は一定でなく場所により差があるため、
同じ錨でも投錨地により把駐力がかわる。そのた
め錨の把駐力の数字は目安にはなるものの絶対的
数字とはなり得ない問題があつた。<Prior art> The holding power of an anchor has conventionally been determined experimentally indoors or in actual sea areas. However, the bottom sediment in the sea area where you actually anchor is not constant and varies depending on the location.
Even with the same anchor, the holding power varies depending on the anchorage. For this reason, there was a problem that although the figures for the holding power of anchors could be used as a guideline, they could not be used as absolute figures.
＜発明の概要＞
本発明は上記した問題点に鑑みてなされたもの
で、錨の爪部かき込み面に圧力センサを装着し、
この圧力センサの信号により把駐力を検知しよう
とするものである。<Summary of the Invention> The present invention has been made in view of the above-mentioned problems, and includes a pressure sensor attached to the scraping surface of the hook portion of the anchor,
The intention is to detect the gripping force using the signal from this pressure sensor.
把駐時に錨の爪部は海底をかき込むから、この
爪部に設けた圧力センサには把駐力に応じた出力
が得られ、把駐力を正確に検知することができ
る。 Since the claw of the anchor scrapes the seabed during the anchoring process, the pressure sensor provided on the claw provides an output corresponding to the anchoring force, making it possible to accurately detect the anchoring force.
圧力センサは爪部の複数個所にできるだけ多数
個設けるのが望ましい。 It is desirable to provide as many pressure sensors as possible at multiple locations on the claw portion.
圧力センサからの信号は有線で船舶内に取込ん
でも良いし、或いは超音波等無線方式で受信する
ようにしても良い。 The signal from the pressure sensor may be taken into the ship by wire, or may be received by a wireless method such as ultrasonic waves.
圧力センサにより得られた圧力に爪部の面積を
かければ、その時の実際の把駐力を得ることがで
きる。 By multiplying the pressure obtained by the pressure sensor by the area of the claw, the actual gripping force at that time can be obtained.
＜実施例＞
第１図に基づいて本発明法を更に詳細に説明す
る。<Example> The method of the present invention will be explained in more detail based on FIG.
図中Ｘは船舶又は海洋構造物等、Ｙは海底、５
０は錨、５１はアンカーチエーン、５２はウイン
ドラス、５３は錨の爪部、５４はシヤンクであ
る。錨５０の形状には種々のものがあるが、海底
をかく爪部５３は必ず備つている。図示例では一
般に用いられているシヤンク５４と爪部５３がヒ
ンジ構造のものを示している。 In the diagram, X is a ship or offshore structure, Y is the seabed, 5
0 is an anchor, 51 is an anchor chain, 52 is a windlass, 53 is a claw portion of the anchor, and 54 is a shank. Although there are various shapes of the anchor 50, it is always provided with a claw portion 53 that scratches the seabed. In the illustrated example, the generally used shank 54 and claw portion 53 have a hinge structure.
錨５０の爪部５３には圧力センサ１が装着され
ている。この実施例では第２図に示すように爪部
５３の先端と基部に１個ずつ計４個装着されてい
る。また爪部５３の表裏に設けているから合計８
個のセンサ１が装着されている。ここで表裏に設
けることとしたのは上記したようにヒンジ構造で
あるため爪部５３の海底をかくかき込み面が状態
により表面か裏面のどちらかになるからである。
爪部５３が固定式でかき込み面が一面である場合
にはその面だけに設ければ良い。 The pressure sensor 1 is attached to the claw portion 53 of the anchor 50. In this embodiment, as shown in FIG. 2, a total of four claws are attached, one at the tip and one at the base of the claw portion 53. In addition, since they are provided on the front and back of the claw portion 53, there are a total of 8
sensors 1 are attached. The reason why the claws are provided on the front and back is that, as mentioned above, due to the hinge structure, the surface of the claw portion 53 that scratches the seabed can be either the front or back surface depending on the condition.
If the claw portion 53 is of a fixed type and has one scratching surface, it is sufficient to provide it only on that surface.
爪部５３とシヤンク５４にはセンサ１に接続す
るケーブル２を通すためのケーブル孔１０が形成
され、ケーブル２はシヤンク５４の根元から孔１
０を出てアンカーチエーン５１に沿つて船内に引
込まれている。孔１０は錨を鋳込む時に形成すれ
ば良い。 A cable hole 10 for passing a cable 2 connected to the sensor 1 is formed in the claw portion 53 and the shank 54, and the cable 2 is inserted into the hole 1 from the base of the shank 54.
0 and is pulled into the ship along the anchor chain 51. The hole 10 may be formed when the anchor is cast.
第３図にセンサ１の装着例を示す。この例では
センサ１にフランジ１１を取りつけ、このフラン
ジ１１を介してビス１２により錨表面に取りつけ
た構造としている。またビスを用いずにフランジ
１１全周を溶接により固定するようにしても良
い。 FIG. 3 shows an example of how the sensor 1 is mounted. In this example, a flange 11 is attached to the sensor 1, and the sensor 1 is attached to the surface of the anchor via the flange 11 with screws 12. Alternatively, the entire circumference of the flange 11 may be fixed by welding without using screws.
なお、圧力センサ１としては種々のものが使用
可能であるが、この実施例では圧電セラミツクを
用いている。 Although various pressure sensors can be used as the pressure sensor 1, piezoelectric ceramic is used in this embodiment.
ケーブル２は、チエーン５１に沿つて船内に引
込まれ、船内に別途設けられたウインチ３により
巻取り、繰出しを行うようになつている。なお、
チエーン５１のホースパイプ５１０とは別にケー
ブル用ホースパイプ２０を設け、ホースパイプ部
でケーブルとチエーンのこじれによるケーブルの
損傷を防止している。 The cable 2 is drawn into the ship along a chain 51, and is wound and let out by a winch 3 provided separately inside the ship. In addition,
A cable hose pipe 20 is provided separately from the hose pipe 510 of the chain 51 to prevent damage to the cable due to twisting of the cable and chain at the hose pipe portion.
ウインチ３によるケーブル２の繰出し、巻き込
み速度はウインドラス５２の速度に周期させてあ
り、アンカーチエーン５１とケーブル１０が一緒
に繰出し、巻込まれるようになつている。 The speed at which the cable 2 is let out and reeled in by the winch 3 is synchronized with the speed of the windlass 52, so that the anchor chain 51 and the cable 10 are let out and reeled in together.
第４図はウインチ３の具体的な構造を示す。ウ
インチの一方の軸３２内にケーブル２の端部を通
して、スリツプリング３３に接続している。スリ
ツプリング３３の固定側には、信号取出線３４が
接続され受信器３４へとつながつている。なお図
中３０はモータ、３１は軸受である。 FIG. 4 shows the specific structure of the winch 3. The end of the cable 2 is passed through one shaft 32 of the winch and connected to a slip ring 33. A signal extraction line 34 is connected to the fixed side of the slip ring 33 and is connected to a receiver 34. In the figure, 30 is a motor, and 31 is a bearing.
この構成により、回転するウインチを介して常
に正確に圧力信号を取出すことができる。 With this configuration, a pressure signal can always be accurately extracted via the rotating winch.
以上の構成において、投錨後アンカーチエーン
５１を引込めば、爪部５３が海底に喰い込み、圧
力センサ１から圧力信号が得られる。この信号は
ケーブル２→スリツプリング３３→信号取出線３
４を通つて受信器４に受信される。センサ１によ
り得られた圧力に爪部５３の面積をかければ、爪
部５３に作用している力、即ち把駐力がわかる。
また走錨した場合には、把駐力が急激に下がるか
ら、走錨を適確に検知することが可能である。 In the above configuration, when the anchor chain 51 is retracted after anchoring, the claw portion 53 bites into the seabed, and a pressure signal is obtained from the pressure sensor 1. This signal is from cable 2 → slip ring 33 → signal output line 3
4 and is received by the receiver 4. By multiplying the area of the claw portion 53 by the pressure obtained by the sensor 1, the force acting on the claw portion 53, that is, the gripping force can be determined.
In addition, when the anchor is dragged, the holding force decreases rapidly, so it is possible to accurately detect anchor dragging.
＜発明の効果＞
以上説明したように本発明によれば、投錨地点
での実際の把駐力を得ることができ、錨の海底の
かき具合が具体的にわかる。また走錨も迅速かつ
適確に検知できる等安全上有利である。<Effects of the Invention> As described above, according to the present invention, it is possible to obtain the actual holding force at the anchoring point, and to specifically know how the anchor is scraping the seabed. It is also advantageous in terms of safety, as it can quickly and accurately detect anchor dragging.
第１図は本発明の説明図、第２図は錨の拡大
図、第３図は圧力センサの取付構造図、第４図は
ウインチの構造図である。
１……圧力センサ、２……ケーブル、３……ウ
インチ、４……受信器、１０……ケーブル孔、１
１……フランジ、１２……ビス、２０……ホース
パイプ、３０……モータ、３１……軸受、３２…
…回転軸、３３……スリツプリング、３４……信
号取出線。
FIG. 1 is an explanatory diagram of the present invention, FIG. 2 is an enlarged view of the anchor, FIG. 3 is a diagram of the mounting structure of the pressure sensor, and FIG. 4 is a diagram of the structure of the winch. 1...Pressure sensor, 2...Cable, 3...Winch, 4...Receiver, 10...Cable hole, 1
1...flange, 12...screw, 20...hose pipe, 30...motor, 31...bearing, 32...
...Rotating shaft, 33...Slip ring, 34...Signal output line.
Claims (1)
かき込み時に圧力センサから得られる圧力信号を
検出して該錨の把駐力を求めることを特徴とする
錨の把駐力検知方法。 ２ 錨の爪部かき込み面に設けられた圧力センサ
と、該圧力センサに接続するケーブルと、錨のチ
エーン巻取−繰出し速度と同期して該ケーブルを
巻取−繰出すウインチと、該ケーブルにスリツプ
リングを介して接続される受信器とを有すること
を特徴とする錨の把駐力検知装置。[Claims] 1. A pressure sensor is provided on the claw portion of the anchor,
A method for detecting the holding force of an anchor, characterized in that the holding force of the anchor is determined by detecting a pressure signal obtained from a pressure sensor during scraping. 2. A pressure sensor installed on the hooking surface of the anchor's claw, a cable connected to the pressure sensor, a winch that winds and unwinds the cable in synchronization with the chain winding and unwinding speed of the anchor, and a 1. An anchor holding force detection device, comprising: a receiver connected via a slip ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9183084A JPS60236889A (en) | 1984-05-10 | 1984-05-10 | Anchoring force detecting method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9183084A JPS60236889A (en) | 1984-05-10 | 1984-05-10 | Anchoring force detecting method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60236889A JPS60236889A (en) | 1985-11-25 |
| JPH0210758B2 true JPH0210758B2 (en) | 1990-03-09 |
Family
ID=14037517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9183084A Granted JPS60236889A (en) | 1984-05-10 | 1984-05-10 | Anchoring force detecting method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60236889A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897183B (en) * | 2015-06-17 | 2017-08-22 | 大连理工大学 | It is a kind of by ROV under water Fast Installation anchor chain monitor sensor stationary fixture |
| JP7473157B2 (en) * | 2020-02-06 | 2024-04-23 | 国立研究開発法人 海上・港湾・航空技術研究所 | Anchoring support method and anchoring support system |
-
1984
- 1984-05-10 JP JP9183084A patent/JPS60236889A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60236889A (en) | 1985-11-25 |
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