JP2839380B2 - Crane dismantling method - Google Patents
Crane dismantling methodInfo
- Publication number
- JP2839380B2 JP2839380B2 JP6119491A JP6119491A JP2839380B2 JP 2839380 B2 JP2839380 B2 JP 2839380B2 JP 6119491 A JP6119491 A JP 6119491A JP 6119491 A JP6119491 A JP 6119491A JP 2839380 B2 JP2839380 B2 JP 2839380B2
- Authority
- JP
- Japan
- Prior art keywords
- jib
- crane
- root
- hook
- connection
- 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 - Fee Related
Links
Landscapes
- Jib Cranes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、クレーン本体に連結し
た根元ジブに先端側ジブを連結解除可能に連結したクレ
ーンのジブ解体方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane jib disassembling method in which a tip jib is detachably connected to a root jib connected to a crane body.
【０００２】[0002]
【従来の技術】従来のクレーンのジブ解体方法として
は、図６の側面図および図７の平面図に示すように構成
されていた。2. Description of the Related Art A conventional crane jib disassembling method has been configured as shown in a side view of FIG. 6 and a plan view of FIG.
【０００３】すなわち、クレーン本体０１に連結した根
元ジブ０２に、先端側ジブ０３が連結解除可能に連結さ
れていて、起伏用ワイヤー０４を巻き戻すことにより先
端側ジブ０３の先端側をジブ受け台０５に受け止め支持
させ、その状態で、解体用クレーンのフック０６を先端
側ジブ０３に玉掛けして吊り下げ支持させ、根元ジブ０
２と先端側ジブ０３との連結を解除し、先ず、先端側ジ
ブ０３を解体し、その後に、根元ジブ０２およびクレー
ン本体０１それぞれを解体している。[0003] That is, a tip side jib 03 is releasably connected to a root jib 02 connected to the crane main body 01, and the tip side of the tip side jib 03 is unrolled by unwinding the hoisting wire 04. 05, and in this state, the hook 06 of the demolition crane is hung on the tip side jib 03 to be suspended and supported.
The connection between the jib 2 and the tip side jib 03 is released, the tip side jib 03 is first disassembled, and then the root jib 02 and the crane main body 01 are disassembled.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来例
では、先端側ジブ０３の長さが長いために、躯体によっ
ては、その屋上の形状が長方形であるなど、先端側ジブ
０３の先端側を受け止め支持させるジブ受け台０５を設
置する場所に制約を受け、解体作業の能率が低下する欠
点があった。However, in the prior art, since the length of the tip side jib 03 is long, depending on the frame, the shape of the rooftop is rectangular. There is a drawback that the efficiency of the disassembling operation is reduced due to the restriction on the place where the jib receiving stand 05 to be supported is installed.
【０００５】また、解体用クレーンのフック０６は、先
端側ジブ０３の重心位置の上方にくるようにしなければ
ならず、一方、その解体用クレーンでもって根元ジブ０
２およびクレーン本体０１それぞれをも解体するため、
クレーン本体０１の重心位置の上方までもフック０６を
移動できなければならず、解体用クレーンとして比較的
長いジブを有する大型のものが必要になり、その解体用
クレーンの解体に手間を要し、施工性が低下する欠点が
あった。Further, the hook 06 of the dismantling crane must be located above the center of gravity of the tip side jib 03.
2 and the crane body 01 are also dismantled.
The hook 06 must be able to move even above the position of the center of gravity of the crane main body 01, and a large crane for dismantling that has a relatively long jib is required, and dismantling of the dismantling crane requires time and effort. There was a drawback that the workability was reduced.
【０００６】本発明は、このような事情に鑑みてなされ
たものであって、ジブ構成に改良を加え、小型の解体用
クレーンによってクレーンを能率良く解体できるように
することを目的とする。[0006] The present invention has been made in view of such circumstances, and an object thereof is to improve the jib structure and to efficiently dismantle a crane using a small dismantling crane.
【０００７】[0007]
【課題を解決するための手段】本発明は、上述のような
目的を達成するために、クレーン本体に連結した根元ジ
ブに先端側ジブを連結解除可能に連結したクレーンのジ
ブ解体方法において、先端側ジブを、その長手方向の中
間箇所で、連結部での連結を解除することにより先端側
の第１のジブと根元ジブ側の第２のジブとに折り曲げ可
能に構成し、クレーン本体と第２のジブとにわたって仮
止めワイヤーを連結するとともに、連結部での連結を解
除し、第１のジブに連結された起伏ワイヤーを巻き戻し
て第１のジブを連結部周りで下方に倒伏垂下させ、次い
で、仮止めワイヤーを巻き戻し、第１のジブの先端側を
クレーン本体側に移動させて第２のジブの下方に折り返
し、第１のジブの第２のジブ側をジブ受け台に支持さ
せ、折り返し状態の第１および第２のジブに解体用クレ
ーンのフックを玉掛けして吊り下げ支持し、根元ジブと
第２のジブとの連結を解除する。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a crane jib disassembling method in which a tip side jib is detachably connected to a root jib connected to a crane body. The side jib is configured to be bendable into a first jib on the distal end side and a second jib on the root jib side by releasing the connection at the connection portion at an intermediate position in the longitudinal direction, and the crane body and the The temporary fixing wire is connected to the second jib, the connection at the connecting portion is released, the undulating wire connected to the first jib is rewound, and the first jib falls down and down around the connecting portion. Next, the temporary fixing wire is rewound, the tip side of the first jib is moved to the crane body side, and is folded back below the second jib, and the second jib side of the first jib is supported by the jib support. Let it be folded 1 and a hook for dismantling a crane suspended supporting and hanging balls to the second jib, to release the connection between the base jib and the second jib.
【０００８】[0008]
【作用】本発明のクレーンのジブ解体方法の構成によれ
ば、第１のジブを第２のジブの下方に重なるように折り
返し、その折り返し状態の第１および第２のジブの重心
位置の上方相当箇所に解体用クレーンのフックを移動さ
せ、第２のジブと根元ジブとの連結を解除し、先端側ジ
ブを構成する第１および第２のジブを解体することがで
きる。According to the construction of the crane jib disassembling method of the present invention, the first jib is folded back so as to overlap below the second jib, and the center of gravity of the folded first and second jib is raised. The hook of the crane for dismantling is moved to a considerable place, the connection between the second jib and the root jib is released, and the first and second jib constituting the distal end jib can be disassembled.
【０００９】[0009]
【実施例】図１はクレーンの側面図であり、クレーン本
体１に起伏自在に根元ジブ２が連結されるとともに、そ
の根元ジブ２に、第１の連結部３を介して連結解除可能
に先端側ジブ４が連結され、そして、先端側ジブ４の先
端側とクレーン本体１とにわたって起伏ワイヤー５が連
結されている。FIG. 1 is a side view of a crane, in which a root jib 2 is connected to a crane main body 1 so as to be able to move up and down. The side jib 4 is connected, and the hoisting wire 5 is connected between the tip side of the tip side jib 4 and the crane main body 1.
【００１０】前記先端側ジブ４が、その長手方向の中間
箇所の連結解除可能な第２の連結部６を介して連結され
た先端側の第１のジブ４ａと根元ジブ２側の第２のジブ
４ｂとによって構成されている。The distal jib 4 is connected to the first jib 4a on the distal end side and the second jib 4 on the base jib 2 side via a second connection portion 6 which can be disconnected at an intermediate position in the longitudinal direction. And a jib 4b.
【００１１】以上の構成により、次のようにしてクレー
ンのジブを解体できるようになっている。With the above arrangement, the crane jib can be dismantled as follows.
【００１２】すなわち、先端側ジブ４を倒伏して、図１
に二点鎖線で示すように、第２のジブ４ｂの先端側とク
レーン本体１とにわたって仮止めワイヤー７を連結する
とともに、第２の連結部６での連結を解除する。That is, the tip side jib 4 is folded down, and FIG.
As shown by a two-dot chain line, the temporary fixing wire 7 is connected between the distal end side of the second jib 4b and the crane main body 1, and the connection at the second connecting portion 6 is released.
【００１３】次いで、起伏ワイヤー５を巻き戻して弛め
る状態で仮止めワイヤー７を巻き取り、図２の側面図に
示すように、第１のジブ４ａを第２の連結部６の周りで
下方に倒伏垂下させる。Next, the temporary fixing wire 7 is wound up in a state where the undulating wire 5 is unwound and loosened, and the first jib 4a is moved downward around the second connecting portion 6 as shown in the side view of FIG. Let it fall down.
【００１４】その後、仮止めワイヤー７を巻き戻し、第
１のジブ４ａを垂下した状態で倒伏させ、図３の側面図
および図４の平面図それぞれに示すように、その第１の
ジブ４ａの先端側をクレーン本体１側に移動させて第２
のジブ４ｂの下方に折り返し、第１のジブ４ａの第２の
ジブ４ｂ側をジブ受け台８に支持させる。Thereafter, the temporary fixing wire 7 is rewound and the first jib 4a is laid down in a suspended state, and as shown in the side view of FIG. 3 and the plan view of FIG. Move the tip side to the crane body 1 side
Of the first jib 4a, and the jib support 8 supports the second jib 4b side of the first jib 4a.
【００１５】そして、図５の側面図に示すように、折り
返し状態の第１および第２のジブ４ａ，４ｂに解体用ク
レーンのフック９を玉掛けして吊り下げ支持し、起伏ワ
イヤー５および仮受けワイヤー７を外すとともに根元ジ
ブ２と第２のジブ４ｂとの連結を解除する。Then, as shown in the side view of FIG. 5, a hook 9 of a dismantling crane is slung on the first and second jib 4a, 4b in the folded state, suspended and supported, and the undulating wire 5 and the temporary support are provided. The wire 7 is removed, and the connection between the root jib 2 and the second jib 4b is released.
【００１６】しかる後に、折り返し状態の第１および第
２のジブ４ａ，４ｂを適当な場所に搬送して解体し、そ
の後に、根元ジブ２およびクレーン本体１をも解体用ク
レーンによって取り外し、同様にして解体し、リフトな
どによって降ろすことができる程度の大きさまで解体す
る。Thereafter, the folded back first and second jib 4a, 4b are transported to an appropriate place and dismantled. Thereafter, the root jib 2 and the crane main body 1 are also removed by the dismantling crane. And dismantle it to a size that can be taken down by a lift or the like.
【００１７】その後、最終的に解体用クレーン解体し、
リフトなどによって降ろして一連の解体作業を終了す
る。After that, the crane for dismantling is finally dismantled,
It is lowered by a lift or the like to complete a series of dismantling work.
【００１８】[0018]
【発明の効果】本発明のクレーンのジブ解体方法によれ
ば、第１のジブをクレーン本体側に折り返すから、折り
返し状態の第１および第２のジブの重心位置をクレーン
本体側に近づけることができ、クレーン本体の重心位置
との距離が短くなり、短いジブを有する小型の解体用ク
レーンで解体でき、最終的に、解体用クレーンの解体な
らびに搬出が簡単になり、施工性を向上できるようにな
った。According to the crane jib disassembling method of the present invention, since the first jib is folded back to the crane body side, the center of gravity of the folded first and second jib can be brought closer to the crane body side. The distance from the center of gravity of the crane body is shortened, and the crane for dismantling can be dismantled with a small crane having a short jib. became.
【００１９】また、第１および第２のジブを折り返した
状態で、その第１のジブの第２のジブ側端部をジブ受け
台に支持させるから、従来よりもクレーン本体に近い位
置にジブ受け台を設置でき、ジブ受け台の設置位置に制
約を受けることが少なく、躯体の屋上の形状が長方形な
どであっても解体作業を能率良く行うことができ、施工
性を向上できるようになった。Also, since the second jib end of the first jib is supported by the jib receiving base in a state where the first and second jib are turned back, the jib is located closer to the crane body than in the prior art. The cradle can be installed, and there are few restrictions on the installation position of the jib cradle. Even if the rooftop of the skeleton is rectangular, demolition work can be performed efficiently, and workability can be improved. Was.
【図１】クレーンの側面図である。FIG. 1 is a side view of a crane.
【図２】クレーンの側面図である。FIG. 2 is a side view of the crane.
【図３】クレーンの側面図である。FIG. 3 is a side view of the crane.
【図４】クレーンの平面図である。FIG. 4 is a plan view of the crane.
【図５】クレーンの側面図である。FIG. 5 is a side view of the crane.
【図６】従来例のクレーンの側面図である。FIG. 6 is a side view of a conventional crane.
【図７】従来例のクレーンの平面図である。FIG. 7 is a plan view of a conventional crane.
１ クレーン本体 ２ 根元ジブ ４ 先端側ジブ ４ａ 第１のジブ ４ｂ 第２のジブ ５ 起伏ワイヤー ６ 第２の連結部 ７ 仮止めワイヤー ８ ジブ受け台 ９ 解体用クレーンのフック DESCRIPTION OF SYMBOLS 1 Crane main body 2 Root jib 4 Tip side jib 4a 1st jib 4b 2nd jib 5 Undulating wire 6 2nd connection part 7 Temporary fixing wire 8 Jib receiving stand 9 Hook of crane for dismantling
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B66C 19/00 - 23/94──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 6 , DB name) B66C 19/00-23/94
Claims (1)
側ジブを連結解除可能に連結したクレーンのジブ解体方
法において、前記先端側ジブを、その長手方向の中間箇
所で、連結部での連結を解除することにより先端側の第
１のジブと前記根元ジブ側の第２のジブとに折り曲げ可
能に構成し、前記クレーン本体と前記第２のジブとにわ
たって仮止めワイヤーを連結するとともに、前記連結部
での連結を解除し、前記第１のジブに連結された起伏ワ
イヤーを巻き戻して前記第１のジブを前記連結部周りで
下方に倒伏垂下させ、次いで、前記仮止めワイヤーを巻
き戻し、前記第１のジブの先端側を前記クレーン本体側
に移動させて前記第２のジブの下方に折り返し、前記第
１のジブの前記第２のジブ側をジブ受け台に支持させ、
折り返し状態の第１および第２のジブに解体用クレーン
のフックを玉掛けして吊り下げ支持し、前記根元ジブと
前記第２のジブとの連結を解除することを特徴とするク
レーンのジブ解体方法。1. A jib disassembling method for a crane in which a tip side jib is detachably connected to a root jib connected to a crane main body, wherein the tip side jib is connected at a connecting portion at an intermediate position in a longitudinal direction thereof. The crane body is configured to be bendable into the first jib on the distal end side and the second jib on the root jib side by releasing the hook, and the temporary fixing wire is connected across the crane body and the second jib, and the connection is performed. Disconnecting the connection at the part, unwinding the undulating wire connected to the first jib, causing the first jib to fall down and down around the connecting portion, and then unwinding the temporary fixing wire; Moving the tip end side of the first jib toward the crane body side and turning it back below the second jib, and supporting the second jib side of the first jib on a jib receiving stand;
A jib disassembling method for a crane, comprising: hanging a hook of a dismantling crane on the first and second jib in a folded state, suspending and supporting the hook, and releasing the connection between the root jib and the second jib. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6119491A JP2839380B2 (en) | 1991-03-01 | 1991-03-01 | Crane dismantling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6119491A JP2839380B2 (en) | 1991-03-01 | 1991-03-01 | Crane dismantling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04277196A JPH04277196A (en) | 1992-10-02 |
| JP2839380B2 true JP2839380B2 (en) | 1998-12-16 |
Family
ID=13164119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6119491A Expired - Fee Related JP2839380B2 (en) | 1991-03-01 | 1991-03-01 | Crane dismantling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2839380B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6625245B1 (en) * | 2000-02-25 | 2003-09-23 | Hitachi, Ltd. | Method of handling reactor vessel |
| CN104860209B (en) * | 2015-05-08 | 2017-01-04 | 中建三局第二建设工程有限责任公司 | Movable arm tower crane height space-variant arm method |
| CN107444935B (en) * | 2017-06-19 | 2020-05-01 | 五冶集团上海有限公司 | Anti-collision method for dismantling pull rod of cantilever girder of ship unloader |
| CN109132889B (en) * | 2017-06-27 | 2020-06-26 | 五冶集团上海有限公司 | Double-cantilever ship unloader dismantling construction method |
| DE102018114832A1 (en) * | 2018-06-20 | 2019-12-24 | Liebherr-Werk Ehingen Gmbh | Large crane with jib |
| CN112919305A (en) * | 2019-12-05 | 2021-06-08 | 大连中远海运重工有限公司 | Method for dismounting temporary support hanging beam tool of crane |
-
1991
- 1991-03-01 JP JP6119491A patent/JP2839380B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04277196A (en) | 1992-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |