JPS59220488A - Propulsion system mount/dismount structure for ocean movable structure - Google Patents
Propulsion system mount/dismount structure for ocean movable structureInfo
- Publication number
- JPS59220488A JPS59220488A JP58096606A JP9660683A JPS59220488A JP S59220488 A JPS59220488 A JP S59220488A JP 58096606 A JP58096606 A JP 58096606A JP 9660683 A JP9660683 A JP 9660683A JP S59220488 A JPS59220488 A JP S59220488A
- Authority
- JP
- Japan
- Prior art keywords
- propulsion unit
- propulsion system
- mobile structure
- marine mobile
- propulsion
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B85/00—Dismantling or scrapping vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
- B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
- B63H2005/1254—Podded azimuthing thrusters, i.e. podded thruster units arranged inboard for rotation about vertical axis
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ）産業上の利用分野
本発明は海上クレーンや船舶などの海洋移動構造物をド
ライドツクすることなく水中で、その底部に可搬式の推
進機を着脱する場合に利用されるもので、前記推進機を
円滑に着脱させることができる海洋移動構造物の推進機
着脱装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is used for attaching and detaching a portable propulsion device to the bottom of a marine mobile structure such as a marine crane or ship underwater without dry docking it. The present invention relates to a propulsion device attachment/detachment device for a marine mobile structure, which allows the propulsion device to be smoothly attached and detached.
（ｂ）従来技術
大型の海洋移動構造物はその製作課程で推進機を装着す
ることが困難であることが多いので、近年、進水後海上
で推進機が装着されたり、交換されたりする。第１図は
海洋移動構造物の１例である海上クレーン１で、その脚
１ａの底部ｌｂに、ボンネット２ａにより水封された可
搬式の推進機２が水中３で装着作業されている状態、お
よび、すでに装着された状態を示す。このような装着作
業は、第２図（ａ）および（ｂ）に示すような推進機着
脱装置４により行なわれる。まず、推進機本体２ｂは第
１図に示すクレーン１０などで操作される複数本のロー
１５により水中３に吊り降ろされ、底部１ｂの近傍に到
達すると推進機２を支持して横行させるためのトロリー
６が水中３の作業者によりガイドレール７に嵌入される
。支持ロープ５ａの締結された横移動用ロー１８が図示
しない装置で矢符Ｍ方向に引っ張られ装着ケーシング９
の直下に移動される。次に、その位置で吊り揚げロープ
１０が水中３の作業者により、脚１ａ内で垂下されたチ
ェンブロソク１１の下端の吊り揚げ金具１２の端部１２
ａに取付けられ、そこで、第２図（Ｃ）に示すようにチ
ェンブロソク１１を用いて引き揚げると装着ケーシング
９内に搬入される。そのフランジ２Ｃが底部１ｂの装着
座１ｄにポルトなどにより固着されると、海上クレーン
１への装着が完了する。なお、推進機２の取外しおよび
１１！出は上述と逆の手順で行なわれる。(b) Prior Art Since it is often difficult to attach propulsion devices to large marine mobile structures during the manufacturing process, in recent years propulsion devices have been attached or replaced at sea after being launched. FIG. 1 shows a marine crane 1, which is an example of a marine mobile structure, in which a portable propulsion unit 2 sealed by a bonnet 2a is attached underwater 3 to the bottom part lb of its leg 1a. And it shows the state that it is already installed. Such attachment work is performed by a propulsion unit attachment/detachment device 4 as shown in FIGS. 2(a) and 2(b). First, the propulsion device body 2b is lowered into the water 3 by a plurality of rows 15 operated by a crane 10 or the like shown in FIG. The trolley 6 is fitted into the guide rail 7 by an operator underwater 3. The lateral movement row 18 to which the support rope 5a is fastened is pulled in the direction of the arrow M by a device not shown, and the mounted casing 9
will be moved directly below. Next, at that position, the lifting rope 10 is moved by the operator underwater 3 to the end 12 of the lifting fitting 12 at the lower end of the chain rope 11 suspended within the leg 1a.
a, and thereupon, as shown in FIG. 2(C), it is lifted up using a chain holder 11 and carried into the mounting casing 9. When the flange 2C is fixed to the mounting seat 1d of the bottom portion 1b with a port or the like, the mounting on the marine crane 1 is completed. In addition, the removal of the propulsion unit 2 and 11! The extraction is carried out in the reverse order as described above.
このような可搬式の推進機の着脱作業において、推進機
本体の重量は例えば６０ｔｏｎにも及ぶので、狭い脚肉
に装備されている前述したチェンブロソクなどではその
引き揚げ能力が不足する場合があり、時としてそれが切
断するといった極めて危険な状態となる問題がある。加
えて、その重い推進機本体を装着ケーシング直下の位置
に適切に誘導するために必要なトロリーおよびそのトロ
リーを案内するガイドレールなどを丈夫に製作する必要
があり、また、それらが大型化するためコストアップと
なる。さらに、水中の作業者は推進機本体の誘導ならび
に適切な停止をさせるため、クレーンやチェンブロソク
などを操作する海洋移動構造物上の作業者と密接な連絡
を取る必要があり、その連絡には手間が掛かると共に正
確さに欠ける問題がある。In the installation and removal work of such a portable propulsion device, the weight of the propulsion device itself is as much as 60 tons, so the lifting capacity of the above-mentioned chain burosok, which is installed in a narrow leg, may not be sufficient. Sometimes there is a problem with it cutting, which can be extremely dangerous. In addition, the trolley necessary to properly guide the heavy propulsion unit to the position directly below the mounting casing and the guide rails that guide the trolley must be made durable, and as they become larger, This will increase costs. Furthermore, in order to guide the propulsion unit and stop it appropriately, underwater workers must have close contact with workers on the marine mobile structure who operate cranes, chainsaws, etc. This method is time-consuming and lacks accuracy.
（ｃ）発明の目的
本発明は上述した問題を解消するためになされたもので
、第１の発明では推進機本体の水中での重量の軽減およ
び調整を図って、チェンブロツタなどによる引き揚げ作
業における危険な事態の発生を回避し、誘導装置を簡素
化できる海洋移動構造物の推進機着脱装置を提供するこ
とを目的とし、第２の発明では、推進機本体の水中での
重量の軽減および調整を図ると共に水中の作業者が搬入
山作業中の推進機本体を目視しながら自らその姿勢およ
び重量を制御して、正確かつ能率よく誘導着脱作業する
ことができる海洋移動構造物の推進機着脱装置を提供す
ることを目的とする。(c) Purpose of the Invention The present invention has been made to solve the above-mentioned problems, and the first invention aims to reduce and adjust the weight of the propulsion machine body underwater, thereby reducing the risk of danger during salvage operations using chain burrowers etc. The second invention aims to provide a propulsion unit attachment/detachment device for a marine mobile structure that can avoid such situations and simplify the guidance device, and the second invention aims to reduce and adjust the weight of the propulsion unit underwater. At the same time, we have developed a propulsion unit attachment/detachment device for marine mobile structures that allows underwater workers to accurately and efficiently guide the attachment/detachment of the propulsion unit by controlling its posture and weight while visually observing the propulsion unit itself during loading and unloading work. The purpose is to provide.
（ｄ）発明の構成 。(d) Structure of the invention.
第１発明の構成を第３図（ａ）、（ｂ）を参照して説明
すると、海洋移動構造物の一例である海上クレーン１を
ドライドツクすることなく水中３でその底部１ｂに推進
機本体２ｂを着脱する際に、その水中３における重量調
整する浮力タンク２０が着脱自在に設けられている。The configuration of the first invention will be explained with reference to FIGS. 3(a) and 3(b). A marine crane 1, which is an example of a marine mobile structure, is attached to the bottom 1b of the marine crane 1 underwater 3 without dry docking. A buoyancy tank 20 is detachably provided to adjust the weight in water 3 when attaching and detaching the buoyancy tank 20.
第２発明の構成を第６図（ａ）、（ｂ）を参照して説明
すると、上述の発明の構成に加えてその浮力タンク５０
．５１に空気供給用のホース５２．５３を接続すると共
に海洋移動構造物ｌ内のエアコントロール弁５４．５５
に接続し、海洋移動構造物ｌの本体外部の水中３に、エ
アコントロール弁５４．５５のリモートコントロール端
末器５７が設けられている。The structure of the second invention will be explained with reference to FIGS. 6(a) and (b). In addition to the structure of the above-mentioned invention, the buoyancy tank 50
．． Connect the air supply hose 52.53 to 51 and the air control valve 54.55 inside the marine mobile structure l.
A remote control terminal 57 for an air control valve 54, 55 is provided underwater 3 outside the main body of the marine mobile structure 1.
（ｅ）実施例
以下、第１の発明をその実施例に基づいて詳細に説明す
る。第３図（ａ）および（ｂ）は海洋移動構造物の推進
機着脱装置７０の実施例で、推進機本体２ｂにはその水
中３における重量を軽減または調整することができる浮
力タンク２０が、その下面に設けられた図示しない座面
にボルトなどで着脱自在に装着されている。この浮力タ
ンク２０が鋼製の非変形タンクである場合には、その内
部の空気を抜取る手動弁２０ａおよび海水を導入する手
動弁２０ｂが設けられている。また、この浮力タンク２
０が可撓体のゴムタンクなどの場合は空気抜取り用の手
動弁２０ａが設けられる。(e) Examples Hereinafter, the first invention will be explained in detail based on examples thereof. FIGS. 3(a) and 3(b) show an embodiment of a propulsion unit attachment/detachment device 70 for a marine mobile structure, in which a buoyancy tank 20 that can reduce or adjust the weight of the propulsion unit 3 in water is provided in the propulsion unit body 2b. It is removably attached to a seat (not shown) provided on the underside with bolts or the like. When the buoyancy tank 20 is a non-deformable steel tank, it is provided with a manual valve 20a for removing air from inside the tank and a manual valve 20b for introducing seawater. Also, this buoyancy tank 2
If 0 is a flexible rubber tank or the like, a manual valve 20a for air removal is provided.
なお、推進機本体２ｂが搬入される装着ケーシング９は
例えば、底部１ｂに固着されて通常は取外しが行なわれ
ない下部体９Ｃと、その上に海水が脚ｌａ内に侵入する
のを防止するカバー９ａとからなり、そのカバー９ａに
は覗き窓１３が設けられると共に、吊上げ金具１２が水
密に上下動できる貫通穴９ｂが穿設されている。そして
、この装着ケーシング９には海水を排除するための排水
管１４が延設され、止め弁１５を介して排水ポンプ１７
に接続されている。加えて、従来技術のところで述べた
ように装着ケーシング９の直下に移動された推進機本体
２ｂを引き揚げまたは吊り降ろすためのチェンブロソク
１１が設けられている。The mounting casing 9 into which the propulsion unit body 2b is carried includes, for example, a lower body 9C that is fixed to the bottom 1b and cannot normally be removed, and a cover on top of the lower body 9C that prevents seawater from entering the leg la. The cover 9a is provided with a viewing window 13 and a through hole 9b through which the lifting fitting 12 can be moved up and down in a watertight manner. A drain pipe 14 for discharging seawater is extended to this mounting casing 9, and a drain pump 17 is connected via a stop valve 15.
It is connected to the. In addition, as described in the section on the prior art, a chain float 11 is provided for raising or lowering the propulsion unit main body 2b that has been moved directly below the mounting casing 9.
このような実施例によれば、次のように着脱作業を行な
うことができる。第３図（ａ）に示すように、まず、推
進機本体２ｂは予め空気が封入された着脱自在の浮力タ
ンク２０と一体にされ、図示しないクレーンなどから操
作される複数本のロープ５により水中３に吊り降ろされ
る。底部１ｂの近傍に到達するとトロリー６が水中３の
作業者によりガイドレール７に嵌入される。水中３の作
業者は必要に応じて例えば、推進機本体２ｂの姿勢を若
干調整するために手動弁２０ａおよび２０ｂを開き浮力
タンク２０の内部の空気を抜いたり海水を導入したりし
てその浮力を調整する。なお、浮力タンク２０に推進機
本体２ｂの水中における重量より若干低い浮力を持たせ
ておけば、その移動作業は容易になるし、−Ｆ記のよう
に必要に応じてその浮力を減少させても、その後の作業
に十分な浮力を発揮させることができる。横移動用ロー
プ８がクレーンなどにより矢符Ｍ方向に引っ張られると
、１−ロリー６がガイドレール７に沿って移動し、推進
機本体２ｂは装着ケーシング９の直下に運ばれる。According to such an embodiment, the attachment/detachment work can be performed as follows. As shown in FIG. 3(a), first, the propulsion unit body 2b is integrated with a removable buoyancy tank 20 filled with air in advance, and is submerged in water using a plurality of ropes 5 operated by a crane or the like (not shown). 3 to be lowered. When the trolley 6 reaches the vicinity of the bottom 1b, the operator in the water 3 inserts the trolley 6 into the guide rail 7. The operator underwater 3 may, for example, open the manual valves 20a and 20b to slightly adjust the attitude of the propulsion unit body 2b to remove air from the buoyancy tank 20 or introduce seawater to improve its buoyancy. Adjust. It should be noted that if the buoyancy tank 20 has a buoyancy that is slightly lower than the weight of the propulsion unit body 2b in water, the movement work will be facilitated, and the buoyancy can be reduced as necessary as shown in -F. can also provide sufficient buoyancy for subsequent work. When the lateral movement rope 8 is pulled in the direction of arrow M by a crane or the like, the 1-rolley 6 moves along the guide rail 7, and the propulsion unit body 2b is carried directly below the mounting casing 9.
次に、その位置でロープ１０が水中３の作業者によりチ
ェンプロソク１１の下端の吊上げ金具１２の端部１２ａ
に取付けられる。第３図（ｂ）に示すように、矢符Ｎ方
向に引揚げられ、底部１ｂに設けられた装着座１６に推
進機本体２ｂのフランジ２Ｃが当接すると、その位置で
図示しないシール材などを挟むようにして適数個のボル
ト１８により推進機本体２ｂが固着される。このときも
、浮力タンクの有する浮力によりその重量が軽減されて
いるので、引き揚げ力の小さいチェンプロソク１１でも
容易に装着ケーシング９内に搬入することができる。な
お、装着ケーシング９には推進機本体２ｂが搬入される
以前から海水が充満しているので、覗き窓１３から監視
しつ＼排水ポンプ１７による排水作業を行なう。排水の
完了を確認した後にカバー９ａを下部体９ｃから取除き
、かつ、チェンブロックを退避させる。そこで、水封用
のボンネット２ａが本体２ｂより取外され、第４図に示
すように、本体２ｂの上部２ｄにプロペラ２ｅの推力方
向え変えるための旋回機構３４やプロペラ回転動力伝達
機構３５が装着される。・前記チェンブロソク１１が除
去された支持体１９上に新たに原動機３６が据え付けら
れ、その出力軸３７と推進機２とが中間軸３８で接続さ
れる。このような作業と同時に、前記浮力タンク２０は
取外される。なお、推進機本体２ｂを底部１ｂから取外
す場合は、上述と逆の手順で行なへば容易に取外すこと
ができる。Next, at that position, the operator underwater 3 lifts the rope 10 to the end 12a of the lifting fitting 12 at the lower end of the chain handle 11.
mounted on. As shown in FIG. 3(b), when the flange 2C of the propulsion unit body 2b comes into contact with the mounting seat 16 provided on the bottom part 1b after being pulled up in the direction of the arrow N, a sealing material (not shown) etc. The propulsion unit main body 2b is fixed by an appropriate number of bolts 18 such that they are sandwiched therebetween. At this time as well, since the weight of the buoyancy tank is reduced by the buoyancy of the buoyancy tank, even the chain prosock 11 with a small lifting force can be easily carried into the mounting casing 9. It should be noted that since the mounting casing 9 is filled with seawater before the propulsion unit body 2b is carried in, drainage work is performed using the drainage pump 17 while monitoring through the viewing window 13. After confirming the completion of drainage, the cover 9a is removed from the lower body 9c, and the chain block is evacuated. Therefore, the water seal bonnet 2a is removed from the main body 2b, and as shown in FIG. It will be installed. - A new prime mover 36 is installed on the support 19 from which the chain rotor 11 has been removed, and its output shaft 37 and the propulsion device 2 are connected by an intermediate shaft 38. At the same time as this operation, the buoyancy tank 20 is removed. In addition, when removing the propulsion device main body 2b from the bottom portion 1b, it can be easily removed by performing the procedure in reverse to the above.
第５図（ａ）、（ｂ）は異なる実施例で、推進機本体２
ｂには、その水中３における重量を調整することができ
る浮力タンク３１が複数個（図示３個）に分割されて着
脱自在に装着されている。Figures 5(a) and 5(b) show different embodiments.
A buoyancy tank 31 whose weight in water 3 can be adjusted is divided into a plurality of parts (three in the figure) and detachably attached to the tank b.
この浮力タンク３１は上述の実施例において述べたよう
に全数鋼製でも可撓体製でも、また、いくつかは鋼製で
他は可撓体製であってもよい。そして、図示しないが前
述の実施例で述べた手動弁２０ａおよび２０ｂなどが必
要に応じて設けられている。As described in the above embodiment, this buoyancy tank 31 may be made entirely of steel or a flexible material, or some may be made of steel and the others may be made of a flexible material. Although not shown, the manual valves 20a and 20b described in the previous embodiment are provided as necessary.
このような実施例によれば、複数個の浮力タンク３１の
浮力によりその水中３における重量の軽減がなされ、か
つ、適宜各タンクの浮力を調整す０
るとその姿勢の調整が極めて容易になる。したがって、
水中３の作業者は海洋移動構造物上の作業者と連絡をと
りながら推進機本体２ｂを容易にガイドレール７に沿っ
て移動させることができる。According to such an embodiment, the weight in the water 3 is reduced by the buoyancy of the plurality of buoyancy tanks 31, and the attitude can be adjusted extremely easily by appropriately adjusting the buoyancy of each tank. . therefore,
The operator underwater 3 can easily move the propulsion unit body 2b along the guide rail 7 while communicating with the operator on the marine moving structure.
この例では前述の実施例に比較して推進機本体の水中に
おける姿勢の修正がより木目細かく行なうことができ、
着脱作業の能率はより一層向上する。In this example, the attitude of the propulsion unit in the water can be adjusted more precisely than in the previous example.
The efficiency of attaching and detaching work is further improved.
第６図（ａ）、（ｂ）は異なる発明の実施例で、推進機
本体２ｂにはその水中３における重量が調整される１個
の浮力タンク５０あるいは複数個に分割された各浮力タ
ンク５１が着脱自在に設けられ、この浮力タンク５０あ
るいは５１に空気供給用のホース５２．５３を接続する
と共にその他端に海洋移動構造物内のエアコントロール
弁５４．５５が接続されている。そして、海洋移動構造
物の本体外部の水中３に、エアコントロール弁５４．５
５のリモートコントロール端末器５７が可撓性のある制
御電力線５６を介して設けられている。FIGS. 6(a) and 6(b) show different embodiments of the invention, in which the propulsion unit body 2b has one buoyancy tank 50 or each buoyancy tank 51 divided into a plurality of parts, whose weight in water 3 is adjusted. A hose 52,53 for supplying air is connected to this buoyancy tank 50 or 51, and an air control valve 54,55 in the marine mobile structure is connected to the other end. Then, an air control valve 54.5 is installed underwater 3 outside the main body of the marine mobile structure.
5 remote control terminals 57 are provided via flexible control power lines 56.
このような実施例によれば、水中３の作業者は推進機本
体２ｂの姿勢を観察しながら端末器５７を操作して自ら
選択した浮力タンク５０および５１の空気を補充したり
、抜取ることによりその浮力を増強あるいは軽減するこ
とができる。水中３の作業者が例えば、鋼製の非変形の
浮力タンク５０の浮力を増強させるべくエアコントロー
ル弁５４の開口位置を選択して、リモートコントロール
端末器５７の押しボタンを押せば浮力タンク５０の上部
のホース５２を介して図示しない圧縮空気源より空気が
補充され、下部のホース５２よりその内部の海水が抜取
られる。また、可撓体製の浮力タンク５０では浮力タン
ク５０の上部のホース５２を介して空気が補充される。According to such an embodiment, the operator underwater 3 operates the terminal device 57 while observing the attitude of the propulsion unit body 2b to replenish or remove air from the buoyancy tanks 50 and 51 that he or she selects. The buoyancy can be increased or reduced by For example, if the operator underwater 3 selects the opening position of the air control valve 54 in order to increase the buoyancy of the non-deformable steel buoyancy tank 50 and presses the push button on the remote control terminal 57, the buoyancy tank 50 will be increased. Air is replenished from a compressed air source (not shown) through the upper hose 52, and the seawater inside is extracted from the lower hose 52. In addition, the buoyancy tank 50 made of a flexible body is replenished with air through a hose 52 at the top of the buoyancy tank 50.
浮力を軽減する場合は上述と反対の作動をさせるべく押
しボタンを押せばよい。複数個に分割された各浮力タン
ク５１の場合は、その各エアコントロール弁５５をリモ
ートコントロール端末器５７の押しボタンを押すことに
より同様に浮力の増強および軽減を行なうことができる
。If the buoyancy is to be reduced, the pushbutton can be pressed to perform the opposite operation as described above. In the case of each buoyancy tank 51 divided into a plurality of units, the buoyancy can be similarly increased or reduced by pressing a button on the remote control terminal 57 for each air control valve 55.
すなわち、推進機本体２ｂを装着ケーシング９に搬入す
る際、水中３の作業者は端末器５７を操１
作して浮力タンク５０あるいは５１に空気を補充すれば
浮力は増強され、その浮力により推進機本体２ｂの水中
３における重量は軽減されているので円滑に装着ケーシ
ング９に搬入され、底部１ｂに固着されて脚ｌａ内に組
込まれる。なお、浮力タンク５０あるいは５１が鋼板製
の場合、その浮力を手動で調整するために内部の空気を
抜取る手動弁２０ａおよび空気の抜取りに伴ない水をそ
の内部に導入する手動弁２０ｂが各々に設けられていて
もよいことは言うまでもない。That is, when carrying the propulsion unit body 2b into the mounting casing 9, the operator in the water 3 operates the terminal device 57 to replenish the buoyancy tank 50 or 51 with air, thereby increasing the buoyancy, and the buoyancy causes propulsion. Since the weight of the machine body 2b underwater 3 is reduced, it is smoothly carried into the mounting casing 9, fixed to the bottom part 1b, and incorporated into the legs la. In addition, when the buoyancy tank 50 or 51 is made of a steel plate, in order to manually adjust the buoyancy, there is a manual valve 20a for removing the air inside the tank, and a manual valve 20b for introducing water into the tank as the air is removed. Needless to say, it may be provided in
したがって、水中の作業者は推進機本体の姿勢を自ら観
察して端末器を操作し、選択した浮力タンクの浮力を自
動的に、かつ、自由に調整できるので、着脱作業の大半
において脚肉および海洋移動構造物上の作業者との間の
手間の掛かる連絡とその連絡の正確さに欠ける問題を回
避することができ、特に装着ケーシング内に推進機本体
を引揚げる場合浮力タンクの浮力を増強させ引揚げを容
易にすることができ、作業能率を大幅に向上させること
ができる。Therefore, underwater workers can automatically and freely adjust the buoyancy of the selected buoyancy tank by observing the attitude of the propulsion unit themselves and operating the terminal device. It avoids troublesome and inaccurate communications with operators on offshore mobile structures, and increases the buoyancy of the buoyancy tank, especially when lifting the propulsion body into the mounted casing. It is possible to make salvage operations easier, and work efficiency can be greatly improved.
３
２
（ｆ）発明の効果
本発明は以上の実施例の説明から判るように、第１の発
明では大型の重い推進機にその水中における重量に匹敵
する浮力を有する浮力タンクが装着されているので、そ
の浮力により推進機本体の重量が軽減され、着脱作業、
特に装着ケーシング直下でのチェンブロソクによる引揚
げ作業が容易になり、チェンプロソクが切断するといっ
た危険な事態の発生を回避することができる。推進機本
体を装着ケーシングの直下に横移動させるに必要なトロ
リーおよびそのトロリーを案内するガイドレールなども
丈夫に製作する必要が無くなり、コストアンプを回避す
ることもできる。3 2 (f) Effects of the Invention As can be seen from the description of the embodiments above, in the first invention, a large and heavy propulsion device is equipped with a buoyancy tank having a buoyancy comparable to its weight in water. Therefore, its buoyancy reduces the weight of the propulsion unit, making it easier to attach and detach it.
In particular, it becomes easier to carry out salvage work using the chain prosthesis directly under the attached casing, and it is possible to avoid dangerous situations such as the chain prosthesis breaking. There is no need to make the trolley necessary for laterally moving the propulsion machine body directly below the mounting casing, the guide rail for guiding the trolley, etc. strong, and an increase in cost can also be avoided.
第２の発明では上述の効果に加えて、浮力タンクの浮力
を水中の作業者自ら端末器を操作して調整することがで
きるので、作業能率の大幅な向上を図ることができる。In addition to the above-mentioned effects, in the second aspect of the invention, the buoyancy of the buoyancy tank can be adjusted by the underwater worker himself by operating the terminal device, so that work efficiency can be greatly improved.
第１図は海洋移動構造物の１例である海上クレ４
−ンに推進機が装着されている作業状態および装着後の
状態の正面図、第２図（ａ）〜（Ｃ）は従来の推進機装
着作業の説明図で、同図（ｂ）は同図（ａ）のｎ−ｎ線
矢視図、第３図（ａ）、（ｂ）は第１発明の実施例で、
推進機着脱説明図、装着説明図、第４図は設置された推
進機の正面図、第５図（ａ）、（ｂ）は第１発明の異な
る実施例の推進機着脱説明図、第６図（ａ）、（ｂ）は
異なる発明の実施例の推進機着脱説明図である。
１−海洋移動構造物、■ｂ−底部、２−推進機、２ｂ−
推進機本体、３−水中、９−装着ケーシング、２０，３
１．５０，５１−浮力タンク、５２．５３−ホース、５
４．５５−エアコントロール弁、５７−・−リモートコ
ントロール端末器、７〇−推進機着脱装置
特許出願人 川崎重工業株式会社
代理人 弁理士 吉村勝俊（ほか１名）５Figure 1 is a front view of a marine crane, which is an example of a marine mobile structure, in a working state and a state after installation, and Figures 2 (a) to (C) are front views of a marine crane, which is an example of a marine mobile structure. It is an explanatory diagram of the propulsion device installation work, the same figure (b) is a view taken along the line nn of the same figure (a), and FIGS. 3 (a) and 3 (b) are examples of the first invention,
4 is a front view of the installed propulsion device, FIGS. 5(a) and 5(b) are illustrations of attaching and detaching the propulsion device of different embodiments of the first invention, and FIG. Figures (a) and (b) are explanatory diagrams for attaching and detaching the propulsion device of different embodiments of the invention. 1-Marine mobile structure, ■b-bottom, 2-propulsion machine, 2b-
Propulsion unit body, 3-underwater, 9-mounted casing, 20,3
1.50,51-buoyancy tank, 52.53-hose, 5
4.55-Air control valve, 57--Remote control terminal, 70-Propulsion unit attachment/detachment device Patent applicant Kawasaki Heavy Industries, Ltd. agent Patent attorney Katsutoshi Yoshimura (and one other person) 5
Claims (4)
中でその底部に推進機を着脱する海洋移動構造物の推進
機着脱装置において、 前記推進機にその水中における重量を調整する浮力タン
クを着脱自在に設けた、 ことを特徴とする海洋移動構造物の推進機着脱装置。(1) In a propulsion unit attachment/detachment device for a marine mobile structure that attaches and detaches a propulsion unit to the bottom of the marine mobile structure underwater without dry docking the structure, a buoyancy tank for adjusting the weight of the propulsion unit in the water can be freely attached to and detached from the propulsion unit. A propulsion unit attachment/detachment device for a marine mobile structure, characterized in that:
ることを特徴とする特許請求の範囲第１項記載の海洋移
動構造物の推進機着脱装着。(2) The attachment/detachment of a propulsion device to a marine mobile structure according to claim 1, wherein the buoyancy tank is a flexible tank that can be expanded and contracted.
たことを特徴とする特許請求の範囲第１項記載の海洋移
動構造物の推進機着脱装置。(3) The propulsion unit attachment/detachment device for a marine mobile structure according to claim 1, wherein the buoyancy tank is divided into a plurality of units.
中でその底部に推進機を着脱する海洋移動構造物の推進
機着脱装置において、 前記推進機にその水中における重量を調整する浮力タン
クを着脱自在に設け、 この浮力タンクに空気供給用のホースを接続すると共に
海洋移動構造物内のエアコントロール弁に接続し、 前記海洋移動構造物の本体外部の水中に、前記エアコン
トロール弁のリモートコントロール端末器を設けた、 ことを特徴とする海洋移動構造物の推進機着脱装置。(4) In a propulsion unit attachment/detachment device for a marine mobile structure that attaches and detaches a propulsion unit to the bottom of the marine mobile structure underwater without dry docking the structure, a buoyancy tank for adjusting the weight of the propulsion unit in the water can be freely attached to and detached from the propulsion unit. A hose for supplying air is connected to the buoyancy tank and also connected to an air control valve inside the marine mobile structure, and a remote control terminal for the air control valve is installed in the water outside the main body of the marine mobile structure. A propulsion unit attachment/detachment device for a marine mobile structure, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58096606A JPS59220488A (en) | 1983-05-30 | 1983-05-30 | Propulsion system mount/dismount structure for ocean movable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58096606A JPS59220488A (en) | 1983-05-30 | 1983-05-30 | Propulsion system mount/dismount structure for ocean movable structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59220488A true JPS59220488A (en) | 1984-12-11 |
| JPH02237B2 JPH02237B2 (en) | 1990-01-05 |
Family
ID=14169524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58096606A Granted JPS59220488A (en) | 1983-05-30 | 1983-05-30 | Propulsion system mount/dismount structure for ocean movable structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59220488A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1005101C2 (en) * | 1996-01-24 | 1998-07-29 | Aquamaster Rauma Ltd | A method and apparatus for removing a screw assembly from and arranging it in an opening in the bottom of a floating vessel. |
| WO2014091063A1 (en) | 2012-12-14 | 2014-06-19 | Rolls-Royce Oy | Method for disassembling and/or assembling an underwater section of a retractable thruster unit |
| EP2585365A4 (en) * | 2010-06-24 | 2017-04-19 | Rolls-Royce Aktiebolag | A method of dismounting a pod housing from a seating provided in a marine vessel or installing said pod housing in said seating |
-
1983
- 1983-05-30 JP JP58096606A patent/JPS59220488A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1005101C2 (en) * | 1996-01-24 | 1998-07-29 | Aquamaster Rauma Ltd | A method and apparatus for removing a screw assembly from and arranging it in an opening in the bottom of a floating vessel. |
| EP2585365A4 (en) * | 2010-06-24 | 2017-04-19 | Rolls-Royce Aktiebolag | A method of dismounting a pod housing from a seating provided in a marine vessel or installing said pod housing in said seating |
| WO2014091063A1 (en) | 2012-12-14 | 2014-06-19 | Rolls-Royce Oy | Method for disassembling and/or assembling an underwater section of a retractable thruster unit |
| JP2015536871A (en) * | 2012-12-14 | 2015-12-24 | ロールス ロイス オイ アーベー | How to remove and / or install underwater part of retractable thruster unit |
| EP2931600A4 (en) * | 2012-12-14 | 2016-11-09 | Rolls Royce Oy Ab | Method for disassembling and/or assembling an underwater section of a retractable thruster unit |
| US9708032B2 (en) | 2012-12-14 | 2017-07-18 | Rolls-Royce Oy Ab | Method for disassembling and/or assembling an underwater section of a retractable thruster unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02237B2 (en) | 1990-01-05 |
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