JPS5940967B2 - How to assemble the cord for a liftable workbench - Google Patents
How to assemble the cord for a liftable workbenchInfo
- Publication number
- JPS5940967B2 JPS5940967B2 JP12182181A JP12182181A JPS5940967B2 JP S5940967 B2 JPS5940967 B2 JP S5940967B2 JP 12182181 A JP12182181 A JP 12182181A JP 12182181 A JP12182181 A JP 12182181A JP S5940967 B2 JPS5940967 B2 JP S5940967B2
- Authority
- JP
- Japan
- Prior art keywords
- rack
- internal
- cord
- dimension
- internal plate
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0818—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with racks actuated by pinions
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Description
【発明の詳細な説明】
本発明は昇降式作業台のコード組立方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cord assembly method for an elevating work platform.
従来、一般に、ジヤツキアップ型リグにおけるレグ２は
、第１図および第２図に示すように、３本のコード１を
ホリゾンタルブレーシング３及びダイアゴナルブレーシ
ング４で連結した三角柱状のヤグラ型をなしており、リ
グ船体ＡＫ対するコード２の昇降は、３組のジャッキュ
ニツＮＯに設けられているガイドプレート１７の内側と
、上記３組のコード１に各々２ケ所設けられているラッ
ク５の先端部とをガイドとして行なわれる。Conventionally, the leg 2 in a jack-up type rig is generally a triangular prism-like turret shape in which three cords 1 are connected by horizontal bracing 3 and diagonal bracing 4, as shown in FIGS. 1 and 2. The lifting and lowering of the cords 2 with respect to the rig hull AK involves touching the inside of the guide plates 17 provided on the three sets of jacks NO and the tips of the racks 5 provided at two locations on each of the three sets of cords 1. This is done as a guide.
従って、コード２に於けるラック５の先端間寸法りは、
ジャッキュニツ）１（Ｈ’ｌ：設けられているガイドプ
レート１７の内側寸法Ｌ′に対し、若干小さく、且つ、
レグ全長にわたって５寸法の精度維持が要求される。Therefore, the dimension between the ends of the rack 5 in code 2 is:
1 (H'l: slightly smaller than the inner dimension L' of the provided guide plate 17, and
Accuracy of five dimensions is required to be maintained over the entire length of the leg.
この精度を出すため、従来、次の方法でコードが製作さ
れていた。In order to achieve this accuracy, codes have traditionally been produced using the following method.
すなわち、第３図に示すように、予め、２組のラック５
の各々の背面６に機械加工を施してラック５の歯先から
背面６までの寸法を所定の寸法ｔ１ に加工すると共に
、インターナルプレート７の巾方向の両端部を機械加工
を施して所定の寸法／、２に仕上げておき、しかる後に
、インターナルプレート７の両端部にラック５の背面６
を溶接し、次いで、ラック５の側面８に１対の半円筒状
コード材９を溶接することによってコード１を形成して
いた。That is, as shown in FIG. 3, two sets of racks 5 are installed in advance.
The back surface 6 of each of the internal plates 7 is machined to make the dimension from the tooth tip of the rack 5 to the back surface 6 a predetermined dimension t1, and both ends of the internal plate 7 in the width direction are machined to obtain a predetermined dimension. Finish the dimensions to 2, and then attach the rear surface 6 of the rack 5 to both ends of the internal plate 7.
The cord 1 was formed by welding a pair of semi-cylindrical cord members 9 to the side surface 8 of the rack 5.
しかしながら、この寸法によると、ラック５及びインタ
ーナルプレート７のすべてる全長にわたって機械加工し
なければならず、この機械加工に要する労力と時間はぼ
り犬なものとなり、コストアップの主な原因になってい
た。However, according to these dimensions, the entire length of the rack 5 and internal plate 7 must be machined, and the labor and time required for this machining are excessive, which is the main cause of increased costs. was.
上記の如く、従来の方法はラック背面の機械加−工費の
占めるウェイトが非常に大きく、又、コード製作時に於
ける。As mentioned above, in the conventional method, the cost of machining the rear surface of the rack is very large, and the cost involved in manufacturing the cord is very large.
インターナルプレートの全長にわたる両端部の機械加工
が大変な工数であるため、本発明は上記機械加工を省略
し、簡単な方法ながら精度の高いコードの製造方法を提
供することを目的とするものである。Since machining both ends of the internal plate along its entire length requires a large amount of man-hours, the present invention aims to omit the above-mentioned machining and provide a simple yet highly accurate cord manufacturing method. be.
すなわち、本発明の昇降式海上作業台のコード立方法は
、２個一対の片歯ラックに、それぞれインターナルプレ
ートを溶接し、次いで、上記片歯ラック同志の先端間寸
法が一定になるようにインターナルプレート同志、又は
インターナルプレートと片歯ラックとの重ね代を調整し
、しかる後に、重ね代の箇所を溶接することを特徴とす
る。That is, in the method of cording an elevating offshore work platform of the present invention, internal plates are welded to each of a pair of single-toothed racks, and then the dimensions between the tips of the single-toothed racks are made constant. It is characterized by adjusting the overlap between the internal plates or between the internal plates and the single-tooth rack, and then welding the overlap areas.
以下、本発明の実施例を図面によって説明する。Embodiments of the present invention will be described below with reference to the drawings.
第４図は本発明の第１の実施例を示すものであるが、ま
ず、１対の片歯ラック１２の背面１３にインターナルグ
レート１４の端部を溶接１８する。FIG. 4 shows a first embodiment of the present invention. First, the ends of the internal grate 14 are welded 18 to the back surface 13 of a pair of single-tooth racks 12.
次いで、インターナルプレーＮ４．１４同志を重ね合せ
たあと、ラック先端間寸法が正確にＬとなるようにイン
ターナルプレート１４の重ね代ｔ６を調整し、次いで、
インターナルプレート１４同志を溶接１９する。Next, after overlapping the internal plates N4.14, the overlapping margin t6 of the internal plates 14 is adjusted so that the dimension between the rack tips is exactly L, and then,
The internal plates 14 are welded 19 together.
最後に、１対の半円形状コー上゛材１５をラック１２の
側面１６に溶接２０し、コード１１を形成する。Finally, a pair of semicircular cord members 15 are welded 20 to the side surfaces 16 of the rack 12 to form the cord 11.
上記ラック１２とインターナルプレート１４０寸法は、
ラック高さ寸法ｔ３とインターナルプレート巾寸法ｔ４
を加えた寸法ｔ、０２倍が、ラック先端間寸法りより重
ね代ｔ６だけ大きくなるようにする。The dimensions of the rack 12 and internal plate 140 are as follows:
Rack height dimension t3 and internal plate width dimension t4
The dimension t, 02 times the sum of the dimensions t and 02 is made larger by the overlap margin t6 than the dimension between the ends of the rack.
即ち、寸法ｔ６はインターナルプレート１４どうしの重
ね代であり、当然の事ながら、正確な寸法を要するもの
ではない。That is, the dimension t6 is the overlap margin between the internal plates 14, and as a matter of course, it does not require an accurate dimension.
従って、従来の様にラック１２の背面１３及びインター
ナルプレート１４の端面についての機械加工は不要とな
り、また製作が容易になると共に、製作時間も短縮でき
るようになる。Therefore, machining of the back surface 13 of the rack 12 and the end face of the internal plate 14 as in the conventional case is not required, and the manufacturing process becomes easier and the manufacturing time can be shortened.
第５図は、本発明の他の実施例を示すものであり、前例
と同じ部分には同じ符号を付した。FIG. 5 shows another embodiment of the present invention, in which the same parts as in the previous example are given the same reference numerals.
この例では、片歯ラック１２の背面１３にインターナル
プレート１４ａを溶接１８したあと、−力のインターナ
ルプレート１４ａに補助インターナルプレート２１を溶
接２２し、次いで、該補助インターナルプレー）２１を
、他の一方のインターナルプレート１４ａに重ねたあと
、ラック先端間寸法が正確にＬとなるようにインターナ
ルプレート１４ａと補助インターナルプレート２１の重
ね代ｔ６を調整し、次いでインターナルプレート１４ａ
と補助インターナルプレート２１とを溶接２３する。In this example, after the internal plate 14a is welded 18 to the back surface 13 of the single-tooth rack 12, the auxiliary internal plate 21 is welded 22 to the negative internal plate 14a, and then the auxiliary internal plate 21 is , after stacking the internal plate 14a on the other internal plate 14a, adjust the overlapping margin t6 of the internal plate 14a and the auxiliary internal plate 21 so that the dimension between the rack tips is exactly L, and then stack the internal plate 14a
and the auxiliary internal plate 21 are welded 23.
しかる後に、１対の半円形状コード材１５をラック１２
の側面１６に溶接２０し、コード１１を形成する。After that, the pair of semicircular cord materials 15 are placed in the rack 12.
A cord 11 is formed by welding 20 to the side surface 16 of the cord.
なお、この例の場合は、ラック高さｔ３ とインターナ
ルプレート巾寸法ｔ４を加えた寸法ｔ、がラック先端間
寸法りの半分より多少短い寸法とする。In this example, the dimension t, which is the sum of the rack height t3 and the internal plate width dimension t4, is a dimension somewhat shorter than half of the dimension between the rack tips.
また、第６図は、本発明の他の実施例であり、この例で
は、ラン２１２０両側面１６にインターナルプレート１
４を溶接２４したあと、このインターナルプレート１４
の他端を他の一方のラック１２の側面１６に重ね、次い
で、ラック先端間寸法が正確にＬとなるように、ラック
１２とインターナルプレート１４の重ね代ｔ６を調整し
、次いで、インターナルプレート１４をラック１２の側
面１６に溶接２５する。FIG. 6 shows another embodiment of the present invention, and in this example, internal plates 1 are attached to both sides 16 of the run 2120.
After welding 4 to 24, this internal plate 14
The other end is overlapped with the side surface 16 of the other rack 12, and then the overlapping margin t6 between the rack 12 and the internal plate 14 is adjusted so that the dimension between the rack tips is exactly L, and then the internal The plate 14 is welded 25 to the side surface 16 of the rack 12.
最後に１対の半円形状コード材１５をラック１２の側面
１６′ＶＣ溶接２０し、コード１１を形成する。Finally, a pair of semicircular cord members 15 are VC welded 20 to the side surface 16' of the rack 12 to form the cord 11.
この実施例の場合は、２枚のインターナルプレート１４
の端部がラック１２の側面１６に溶接されるので、より
強度が大きくなる。In this embodiment, two internal plates 14
Since the end portion of the rack 12 is welded to the side surface 16 of the rack 12, the strength is increased.
上記のように、本発明は、１対のラックにそれぞれイン
ターナルプレートを溶接し、次いでラック同志の先端間
寸法が一定になるようにインターナルプレート同志、又
はインターナルプレートとラックとの重ね代を調整し、
しかる後に重ね代ｑ）箇所を溶接するようにしたので、
ラック背面、およびインターナルプレートの巾方向端部
の正確な機械加工が不要となり、゛そのふん製作が容易
になると共に、製作時間が短縮され、従来の製造方法に
比べて大巾にコストダウンが可能となり、工業上有用と
なる。As described above, in the present invention, internal plates are welded to each of a pair of racks, and then the internal plates are welded to each other, or the internal plates and the rack are overlapped so that the dimensions between the tips of the racks are constant. Adjust the
After that, we welded the overlap q), so
Precise machining of the back of the rack and the widthwise edges of the internal plate is no longer required, making manufacturing easier, reducing manufacturing time, and significantly reducing costs compared to conventional manufacturing methods. This makes it possible and industrially useful.
第１図はジヤツキアップ型リグにおけるレグの平断面図
、第２図はレグの正面図、第３図は従来のコード断面図
、第４図乃至第６図は本発明になるコード断面図である
。
１２・・・・・・ラック、１４．１４ａ・・・・・・イ
ンターナルプレート、２１・・・・・・補助インターナ
ルプレート。
１Ｂ、１９，２０，２２，２３，２４．２５・・・・・
・溶接。Fig. 1 is a plan sectional view of a leg in a jack-up type rig, Fig. 2 is a front view of the leg, Fig. 3 is a sectional view of a conventional cord, and Figs. 4 to 6 are sectional views of a cord according to the present invention. . 12... Rack, 14.14a... Internal plate, 21... Auxiliary internal plate. 1B, 19, 20, 22, 23, 24.25...
·welding.
Claims (1)
ートを溶接し、次いで、上記片歯ラック同志の先端間寸
法が一定になるようにインターナルプレート同志、又は
インターナルプレートと片歯ラックとの重ね代を調整し
、しかる後に５重ね代の箇所を溶接することを特徴とす
る昇降式作業台のコード組立方法。An internal plate is welded to each of the 12 pairs of single-tooth racks, and then the internal plates are stacked together, or the internal plate and the single-tooth rack are stacked so that the dimension between the tips of the single-tooth racks is constant. A method for assembling a cord for an elevating workbench, characterized by adjusting the overlap and then welding the five-fold overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12182181A JPS5940967B2 (en) | 1981-08-05 | 1981-08-05 | How to assemble the cord for a liftable workbench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12182181A JPS5940967B2 (en) | 1981-08-05 | 1981-08-05 | How to assemble the cord for a liftable workbench |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5824014A JPS5824014A (en) | 1983-02-12 |
| JPS5940967B2 true JPS5940967B2 (en) | 1984-10-03 |
Family
ID=14820760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12182181A Expired JPS5940967B2 (en) | 1981-08-05 | 1981-08-05 | How to assemble the cord for a liftable workbench |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5940967B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62285838A (en) * | 1986-06-03 | 1987-12-11 | Omron Tateisi Electronics Co | Sheet treatment device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2560247B1 (en) * | 1984-02-28 | 1987-03-20 | Thomas Pierre Armand | PILLAR, IN PARTICULAR OIL DRILLING PLATFORM WITH INCORPORATED RACK |
-
1981
- 1981-08-05 JP JP12182181A patent/JPS5940967B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62285838A (en) * | 1986-06-03 | 1987-12-11 | Omron Tateisi Electronics Co | Sheet treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5824014A (en) | 1983-02-12 |
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