JPS61157489A - Turret supporting bearing unit - Google Patents

Turret supporting bearing unit

Info

Publication number
JPS61157489A
JPS61157489A JP27435784A JP27435784A JPS61157489A JP S61157489 A JPS61157489 A JP S61157489A JP 27435784 A JP27435784 A JP 27435784A JP 27435784 A JP27435784 A JP 27435784A JP S61157489 A JPS61157489 A JP S61157489A
Authority
JP
Japan
Prior art keywords
center
turret
bearing
support
shaft
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
Application number
JP27435784A
Other languages
Japanese (ja)
Other versions
JPH0346356B2 (en
Inventor
Shiyou Ishida
石田 庄
Yasushi Teramoto
寺本 靖
Hideo Hattori
服部 英生
Tadashi Hatake
畠 正
Masao Endo
遠藤 雅男
Yutaka Sugawa
須川 豊
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP27435784A priority Critical patent/JPS61157489A/en
Publication of JPS61157489A publication Critical patent/JPS61157489A/en
Publication of JPH0346356B2 publication Critical patent/JPH0346356B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B63B21/507Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Hydraulic Turbines (AREA)
  • Winding Of Webs (AREA)

Abstract

PURPOSE:To simplify the lifting up-and-down mechanism of a turret supporting wheel, the center point of which is displaced from the center of the supporting shaft of a bearing support by placing the turret supporting wheel and turning a support part which is disposed at the center of the supporting shaft by means of a hydraulic cylinder and so forth. CONSTITUTION:A bearing support 10 is disposed as that it can be turned through the center A' of the supporting shaft of a bearing 12 of a base plate 11 laid on the upper deck 121 of a boat. A turret supporting wheel 30 having a center axis B' displaced from the center A' of the bearing support 10 is mounted on said deck 121. The bearing support 10 which can be turned through the center A' on the bearing 12 by means of hydraulic piston cylinder mechanisms 40 and 42, whereby adjusting vertical projection of a turret supporting wheel 30. Especially, the vertical projection adjusting mechanism can be made simple.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はターレットムアリング船におけるターレット支
持用ベアリング装置の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a bearing device for supporting a turret in a turret mooring ship.

〔従来の技術〕[Conventional technology]

海底油田は世界的に深水海域や海象条件の悪い海域、或
いは埋蔵量が少なく放置されてきた場所等の開発が進め
られる傾向にあり、こnに対応する掘削用構造体として
、移動及び設置が簡単な所謂ターレットムアリング船が
注目されつつ′ある。この船舶は第2因に示すように船
体(120)の中央部に貫設された貫通穴(110)に
、筒状で且つ上部外側に鍔部(101) (デツキ部)
を有するターレット<Zoo)を装入するとともに、船
体上の貫通穴(110)周囲に昇降可能な複数のホイー
ル(130)からなるベアリング製置を設け、ターレツ
) (100)をその鍔部(101)を介して前記ベア
リンク装置で回転可能に支持し、またターレツ)(10
0)には係留索(140)及びアンカ(141)からな
る複数組の係留装置を備えた構造となっている。この船
舶は、係留索(140)及びアンカ(141)をターレ
ット(Zoo)から放射状に下してターレツ) (10
0)を油井の真上に定置係留し、ターレツ) (Zoo
)の内側を通じて下された油井管により掘削等を行うよ
うにし、潮流等の影智にはターレツ) (Zoo)外側
の船体(120)を応答させるようにしたもので、実際
には浮設場所の水泳や海象条件尋に応じ、係留装置で係
留されるターレツ) (Zoo)に対してベアリング装
置により船体(120)側で自由に旋回できるようにし
ておき、潮流等の影響を船体側、吸収するようにしえり
、或いはニアリング装置全体を下降させることによって
ターレット(100) (鍔部(101) )を船体(
120)上に載置しておき、ターレット(Zoo)から
四方に放射状に延びる係留索(140)が潮流等による
跡(120)の旋回によっである程度よじれた時点でタ
ーレツ)(100)が回転できるようベアリング装置で
上昇させ、ブレーキ/ドライブユニットで回転せしめた
り、あるいはその回転を制動させながら係留索(140
)の1よじれが元に戻るようターレツ) (Zoo)を
回転復帰させる修正がな′される。
Around the world, offshore oil fields are being developed in deep-water areas, areas with poor sea conditions, or abandoned areas due to low reserves. A simple so-called turret mooring ship is attracting attention. As shown in the second factor, this ship has a cylindrical flange (101) (decker part) in a through hole (110) formed in the center of the hull (120) and on the outside of the upper part.
A turret (Zoo) having a ) is rotatably supported by the bear link device, and the turret) (10
0) has a structure equipped with multiple sets of mooring devices consisting of mooring lines (140) and anchors (141). This vessel lowered the mooring lines (140) and anchors (141) radially from the turret (Zoo).
0) was permanently moored directly above the oil well, and the turret) (Zoo
) The outer hull (120) was made to respond to the influence of tidal currents, etc., and the outer hull (120) was made to respond. Depending on swimming and sea conditions, the hull (120) side can freely turn with a bearing device against the turret (Zoo) moored with a mooring device, so that the hull side absorbs the effects of tidal currents, etc. or by lowering the entire nearing device, the turret (100) (flange (101)) is attached to the hull (
120), and when the mooring cables (140) extending radially in all directions from the turret (Zoo) are twisted to some extent by the rotation of the trail (120) due to tidal currents, etc., the turret (100) rotates. The mooring line (140
Correction is made to rotate the turret (Zoo) so that the first twist in ) returns to its original state.

ところで上記し念ターレット支持用のベアリング装置は
第3因に示すような構造によりホイール(130)を昇
降せしめるようにしている。
By the way, the above-mentioned bearing device for supporting the turret has a structure as shown in the third factor to raise and lower the wheel (130).

即ち、ホイール(130)を二点支持用フレーム(13
1)に回転自在に取付け、該フレーム(131)の一端
を、船体甲板< 121)上に立設せしめた。サポー)
 (132)先端で支持し、又該フレーム(131)他
端を同じ船体甲板(121)上に垂設し九油圧シリンダ
(133)の口゛ラド(134)先端に取付けており、
この油圧シリンダ< 133)のロッド(134)を伸
縮せしめることで、矢印に示すようにフレーム(131
)を回動させ、ホイール(130)を昇降せしめるよう
にしている。
That is, the wheel (130) is supported at two points by the frame (13
1), and one end of the frame (131) was erected on the hull deck <121). Support)
(132) is supported at the tip, and the other end of the frame (131) is suspended above the same hull deck (121) and is attached to the tip of the mouth rad (134) of the nine hydraulic cylinders (133);
By expanding and contracting the rod (134) of this hydraulic cylinder <133), the frame (131) is expanded and contracted as shown by the arrow.
) is rotated to raise and lower the wheel (130).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、上記したような従来のベアリング装置は、ター
レツ) (100)自身の重量のほか、その回転により
起こるスラスト荷重が生じ、これがフレーム(131)
のサボー) (132)枢支点近傍に過大な曲げモーメ
ントとなって作用するため、この部分に亀裂・破損を生
ずる詔それがある。そのため相当な強度が必要であり、
上記ベアリング装置はかなり大きな構造とならざるを得
ない。しかもサポー) (132)と油圧シリンダ(1
33)間の間隔Hは、もともとかなりの間隔を必要とす
るため、前述したような貫通穴(110)の周りへの施
工は、難工事となりやすい。
However, in the conventional bearing device as described above, in addition to the weight of the turret (100) itself, a thrust load is generated due to the rotation of the turret (100), and this
(132) An excessive bending moment acts near the pivot point, which may cause cracks and damage in this area. Therefore, considerable strength is required,
The above bearing device has to have a fairly large structure. Moreover, support) (132) and hydraulic cylinder (1
33) Since the distance H between the two holes originally requires a considerable distance, construction around the through hole (110) as described above tends to be difficult.

本発明は以上のような問題を解決する九めなされたもの
で、装置各部に余計な曲げモーメントのかからない、コ
ンパクトなベアリング装置を新たに提供せんとするもの
である。
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a new compact bearing device that does not impose unnecessary bending moments on various parts of the device.

c問題点を解決するための手段〕 このため本発明は、軸受はサポートと、該軸受はサポー
トの軸支持中心より偏心して軸芯が枢支さnた偏心軸と
、該傳心軸に回転自在に設けられたホイールと、前記軸
支持中心を回転中心として軸受はサポートヲ回動せしめ
る駆動装置とにより構成さnるターレット支持用ベアリ
ング装置を提供せんとするものである。
[Means for Solving the Problem] For this reason, the present invention provides a bearing, a support, an eccentric shaft whose shaft center is pivoted eccentrically from the shaft support center of the support, and a shaft that rotates about the eccentric shaft. It is an object of the present invention to provide a bearing device for supporting a turret, which is constituted by a freely provided wheel and a drive device for rotating the support around the shaft support center.

〔作 用〕[For production]

このような構成の原理を第1図(a) (b)を用いて
説明する。同図(1)は軸受はサポー)、(2)は偏心
軸、(3)はホイール、(4)は駆動装置である・軸受
はサポート(1)は後述のように偏心軸(2)を枢支す
るもので、そのうちAは軸受はサポート(1)の軸支持
中心を示している。
The principle of such a configuration will be explained using FIGS. 1(a) and 1(b). In the same figure, (1) shows the bearing as a support), (2) shows the eccentric shaft, (3) shows the wheel, and (4) shows the drive device. The bearing A indicates the center of support for the shaft of the support (1).

偏心軸(2)は、その軸芯Bが前記軸支持中心Aより偏
心して軸受はサボー) (IJに枢支されている。
The eccentric shaft (2) has its axis B eccentric from the shaft support center A, and the eccentric shaft (2) is pivotally supported by the IJ.

ホイール(3)は上記偏心軸(2)に回転自在に設けら
れている。
The wheel (3) is rotatably provided on the eccentric shaft (2).

駆動装置(4)は、前記軸支持中心Aを回転中心として
軸受はサポート(1)を回動せしめるものである。
The drive device (4) has a bearing that rotates the support (1) about the shaft support center A as a rotation center.

このような構成で駆動装置(4)により、軸受はサボー
) (1)を第1図伽)のように回動せしめると、前記
偏心軸(2)は軸支持中心A%中心として偏心回転する
ため、ホイール(3)は偏心軸(2)の軸芯Bと共に弧
を描きながら上昇することになる。又以上と反対の操作
によりホイール(3)は下降する。
With this configuration, when the drive device (4) rotates the bearing (1) as shown in Figure 1, the eccentric shaft (2) rotates eccentrically about the shaft support center A%. Therefore, the wheel (3) rises while drawing an arc together with the axis B of the eccentric shaft (2). Also, the wheel (3) is lowered by the operation opposite to the above.

〔実施例〕〔Example〕

第4図は本発明の一実施例を示しており1本発明は、軸
受はサポートαQと、偏心軸−と、ホイール■と、駆動
装置(40)とを有している0軸受はサポート(ト)は
Aを軸支持中心として偏心軸−を支持するものであり、
これ自身はスリーブで構成さn1更に船体甲板(121
)上の基台αルに立設されたベアリング軸受け(2)に
より回転自在に枢支されている。
FIG. 4 shows an embodiment of the present invention. In the present invention, the bearing has a support αQ, an eccentric shaft, a wheel ■, and a drive device (40). G) supports an eccentric shaft with A as the shaft support center,
This itself consists of sleeves n1 and further hull deck (121
) is rotatably supported by a bearing (2) erected on the base α.

偏心軸−は、その軸芯B′を前記軸支持中心により偏心
して、前記軸受はサポートαqに枢支さ牡るシャフトで
あり、本実施例ではスリーブ状の軸受はサボー) QO
を貫通している。
The eccentric shaft is a shaft whose axial center B' is eccentric from the shaft support center, and the bearing is pivotally supported on the support αq, and in this embodiment, the sleeve-shaped bearing is not used.
penetrates through.

ホイール(ト)は前記偏心軸−に回転自在に設けられ、
前述のように上昇した時にターレット鍔部(101)下
面に接合されてターレット(100)を回動自在にせし
めるものである。このホイール(1)には貫通孔(図示
せず)が穿設され、そこへ偏心軸−を貫通せしめ、この
偏心軸−とホイール翰貫通孔面との間にローラベアリン
グ(図示せず)を装備することにより、偏心軸(7)の
軸芯iを中心として自由に回転できるようになっている
・ 動力装置(40)は軸支持中心A8回転中心として軸受
はサポートαQを回動せしめる油圧シリンダからなる。
The wheel (G) is rotatably provided on the eccentric shaft,
As mentioned above, when raised, it is joined to the lower surface of the turret flange (101), allowing the turret (100) to rotate freely. A through hole (not shown) is bored in this wheel (1), an eccentric shaft is passed through the hole, and a roller bearing (not shown) is installed between the eccentric shaft and the surface of the through hole of the wheel. By equipping it, the eccentric shaft (7) can freely rotate around the axis i. The power unit (40) is a hydraulic cylinder that rotates the support αQ with the shaft support center A8 as the rotation center. Consisting of

本実施例では前記軸受はサポート←qを貫通した偏心軸
■端部にマウント(41)を固着せしめ、該マウン) 
(41)から延出するプレート(41m)に動力装置(
40)のロッド(42)の先端がピン止めされると共に
、該動力装置(40)の後端根本(43)が船体甲板(
12!1)上Iと設けられたヒンジ(44)に回動自在
にピン止めされている。
In this embodiment, the bearing has a mount (41) fixed to the end of the eccentric shaft passing through the support ←q, and the mount (41)
The power unit (41m) extends from the plate (41m).
The tip of the rod (42) of the power unit (40) is pinned, and the rear end base (43) of the power unit (40) is attached to the hull deck (40).
12!1) It is rotatably pinned to a hinge (44) provided on the top I.

前記した実施例によるときは、第5図に示すように、動
力装置(40)のロッド(42)を伸張せしめると、軸
受はサポート(2)は軸支持中心Xを回転中心としてベ
アリング軸受け(2)内で回動し、その結果、前記偏心
軸四はその軸芯B′が矢印に示す如く弧を描いて移動す
るため、上昇することになる。従ってホイール■はその
中心点が前記軸芯dと一致しているので、同じく矢印に
示すように弧を描いて上昇する0又逆にホイール曽を下
降せしめる時は、駆動装置(40)のロッド(42)の
ロッド(42)を縮少せしめnば、以上と逆の順序で下
降することになる。
In the above embodiment, as shown in FIG. 5, when the rod (42) of the power device (40) is extended, the bearing (2) rotates around the shaft support center ), and as a result, the eccentric shaft 4 moves upward as its axis B' moves in an arc as shown by the arrow. Therefore, since the center point of the wheel (2) coincides with the axis d, when moving the wheel (2) upward in an arc as shown by the arrow, or conversely, when moving the wheel (2) downward, the rod of the drive device (40) If the rod (42) of (42) is retracted, it will descend in the reverse order.

〔発明の効果〕〔Effect of the invention〕

以上説明してきたように本発明のベアリング支持装置に
よれば、ホイールを枢支する軸の軸芯と該軸を支持する
サポートの軸支持中心とを偏心させるという簡単な構成
によって、ホイールを昇降させることができるため、装
置各部に余計な曲げモーメントが作用することがなく、
従って装置全体としてもコンパクトに構成することがで
きるという優れた効果を有している。又コンパクト且つ
簡単な構造であるため、その施工工事も容易にできると
いう利点も併せて有している。
As explained above, according to the bearing support device of the present invention, the wheel can be raised and lowered by a simple configuration in which the axis of the shaft that pivots the wheel and the shaft support center of the support that supports the shaft are made eccentric. This prevents unnecessary bending moment from acting on each part of the device.
Therefore, the apparatus as a whole has the excellent effect of being able to be constructed compactly. Moreover, since it has a compact and simple structure, it also has the advantage of being easy to construct.

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

第1図(a) (b)は本発明の構成の作用説明図、第
2図はターレットムアリング船の概要を示す概略図、第
3図は従来のターレット支持用ベアリング装置の構造を
示す説BA図、第4図は本発明の一実施例を示す側面図
、第5図は本実施例の作動状態を示す説明図である。 図中、(υα0は軸受はサポート、(2J(7)は偏心
軸、(3)曽はホイールs (4)(40)は駆動装置
、A。 ^は軸支持中心、g、nは偏心軸の軸芯を各示すO
Figures 1 (a) and (b) are explanatory diagrams of the operation of the structure of the present invention, Figure 2 is a schematic diagram showing the outline of a turret mooring ship, and Figure 3 is a diagram showing the structure of a conventional turret supporting bearing device. FIG. 4 is a side view showing one embodiment of the present invention, and FIG. 5 is an explanatory diagram showing the operating state of this embodiment. In the figure, (υα0 is the bearing support, (2J (7) is the eccentric shaft, (3) so is the wheel s (4) (40) is the drive device, A. ^ is the shaft support center, g and n are the eccentric shafts. O indicates each axis of

Claims (1)

【特許請求の範囲】 軸受けサポートと、該軸受けサポートの 軸支持中心より偏心して軸芯が枢支された 偏心軸と、該偏心軸に回転自在に設けられ たホイールと、前記軸支持中心を回転中心 として軸受けサポートを回動せしめる駆動 装置とを有することを特徴とするターレッ ト支持用ベアリング装置。[Claims] bearing support and The shaft center is eccentrically supported from the shaft support center. an eccentric shaft, and an eccentric shaft rotatably provided on the eccentric shaft. The rotation center of the wheel is the shaft support center. The drive that rotates the bearing support as A turret characterized by having a device Bearing device for support.
JP27435784A 1984-12-28 1984-12-28 Turret supporting bearing unit Granted JPS61157489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27435784A JPS61157489A (en) 1984-12-28 1984-12-28 Turret supporting bearing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27435784A JPS61157489A (en) 1984-12-28 1984-12-28 Turret supporting bearing unit

Publications (2)

Publication Number Publication Date
JPS61157489A true JPS61157489A (en) 1986-07-17
JPH0346356B2 JPH0346356B2 (en) 1991-07-15

Family

ID=17540527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27435784A Granted JPS61157489A (en) 1984-12-28 1984-12-28 Turret supporting bearing unit

Country Status (1)

Country Link
JP (1) JPS61157489A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1140612A1 (en) * 1998-12-31 2001-10-10 Imodco, Inc. Offshore turret upper bearing
CN103410870A (en) * 2013-08-16 2013-11-27 严瑞山 Shearing force bearing pedestal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1140612A1 (en) * 1998-12-31 2001-10-10 Imodco, Inc. Offshore turret upper bearing
EP1140612A4 (en) * 1998-12-31 2002-04-17 Imodco Offshore turret upper bearing
CN103410870A (en) * 2013-08-16 2013-11-27 严瑞山 Shearing force bearing pedestal

Also Published As

Publication number Publication date
JPH0346356B2 (en) 1991-07-15

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