JP2000109288A - Hoisting mechanism in boom intermediate part of crane - Google Patents
Hoisting mechanism in boom intermediate part of craneInfo
- Publication number
- JP2000109288A JP2000109288A JP10279963A JP27996398A JP2000109288A JP 2000109288 A JP2000109288 A JP 2000109288A JP 10279963 A JP10279963 A JP 10279963A JP 27996398 A JP27996398 A JP 27996398A JP 2000109288 A JP2000109288 A JP 2000109288A
- Authority
- JP
- Japan
- Prior art keywords
- boom
- sheave
- special extension
- supporting
- rope
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はクレ−ンのブ−ム中
間部での吊上機構に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting mechanism at the middle of a crane boom.
【0002】[0002]
【従来の技術】図6と図7について従来のクレ−ンにつ
いて説明する。まず、図6はブ−ム1が短い場合で、巻
上ドラム2によって駆動される。巻上ロ−プ3がブ−ム
1の頂部に設けられたシ−ブ4を介して張られている。
ブ−ム1はブ−ム支持ロ−プ5で支持されている。又図
7はブ−ム1が長い場合である。この場合にはブ−ム1
が長いので、ブ−ム支持ロ−プ5の中間部にブ−ム中間
支持部6を有している。このように巻上ロ−プ3は何れ
もブ−ム1の頂部で吊上げられる。2. Description of the Related Art A conventional crane will be described with reference to FIGS. First, FIG. 6 shows a case in which the length of the beam 1 is short, and the beam is driven by the hoist drum 2. A hoisting rope 3 is stretched through a sheave 4 provided on the top of the boom 1.
The boom 1 is supported by a boom support rope 5. FIG. 7 shows a case where the beam 1 is long. In this case, boom 1
Is provided with an intermediate boom support portion 6 in the middle of the boom support rope 5. In this way, the hoisting ropes 3 are all suspended at the top of the boom 1.
【0003】[0003]
【発明が解決しようとする課題】このように、従来はク
レ−ンブ−ムの頂部でのみ吊り上げていたが、これを頂
部以外でも吊上げることができるようにして、クレ−ン
の吊り上げ範囲の増大を図る。As described above, conventionally, the crane was lifted only at the top of the crane beam. Increase.
【0004】[0004]
【課題を解決するための手段】多段短尺ブ−ム1を任意
のブ−ム接続位置を上ブ−ム1aと下ブ−ム1bとして
分け、上ブ−ム1aと下ブ−ム1b間をシ−ブ付特殊エ
キステンション7で連結し、特殊エキステンション7に
設けた中間支持部8を介しブ−ム支持ロ−プ5でシ−ブ
付特殊エキステンション7を支持したことを特徴とす
る。又シ−ブ付特殊エキステンション7が、ブラケット
13を有し、ブラケット13の4隅上下に上ブ−ム1a
と下ブ−ム1bとの連結用ラグ14を有し、前記ブラケ
ット13の両側に巻上ロ−プ9を案内するシ−ブ7a及
びシ−ブ7bを有していることを特徴とする。さらにラ
イブマスト11の頂部からシ−ブ付特殊エキステンショ
ン7との間に支持ロ−プ12を取付け大荷重を吊ること
ができるようにした。Means for Solving the Problems The multi-stage short boom 1 is divided into arbitrary boom connecting positions as an upper boom 1a and a lower boom 1b, and a portion between the upper boom 1a and the lower boom 1b is provided. Are connected by a special extension 7 with a sheave, and the special extension 7 with a sheave is supported by a beam supporting rope 5 via an intermediate support portion 8 provided on the special extension 7. I do. Also, the special extension 7 with a sheave has a bracket 13, and upper and lower booms 1a are provided above and below four corners of the bracket 13.
And a lower lug 1b for connecting the lug 14, and a sheave 7a and a sheave 7b for guiding the hoisting rope 9 on both sides of the bracket 13. . Further, a support rope 12 is mounted between the top of the live mast 11 and the special extension 7 with a sheave so that a large load can be hung.
【0005】[0005]
【発明の実施の形態】図1は従来の短いブ−ム1(1
a,1b)で、図6の如く、中間支持部がない場合の例
である。これはブ−ム1の中間にシ−ブ付き特殊エキス
テンション7を挿入している。そして、ブ−ム支持ロ−
プ5(5a,5b)から長尺ブ−ムで通常使用する中間
支持部8をとりつけている。そして巻上ロ−プ9及びフ
ック10を掛けたとき、ブ−ムの曲がりをこれによって
吸収する。FIG. 1 shows a conventional short beam 1 (1).
a, 1b), where there is no intermediate support as shown in FIG. In this, a special extension 7 with a sheave is inserted in the middle of the beam 1. And the boom support
An intermediate support portion 8, which is usually used for a long boom, is attached from the pump 5 (5a, 5b). When the hoisting rope 9 and the hook 10 are hooked, the bending of the boom is absorbed thereby.
【0006】さらに大荷重の場合には、ライブマスト1
1の頂部からシ−ブ付特殊エキステンション7との間に
支持ロ−プ12を取付け、これによって荷重を支持する
ようにした。このようにライブマスト11の頂部からシ
−ブ付特殊エキステンション7に支持ロ−プ12を付け
た場合は、通常のクレ−ンの構成となり、中間支持部8
を設けた場合に比べ、より大きな荷重を吊ることができ
る。In the case of a heavy load, the live mast 1
A support rope 12 was mounted between the top of the sample 1 and the special extension 7 with a sheave, thereby supporting the load. When the support rope 12 is attached to the special extension 7 with a sheave from the top of the live mast 11 as described above, the structure becomes a normal crane and the intermediate support 8
A larger load can be hung as compared with the case in which.
【0007】図2は長尺ブ−ムの場合で、中間支持部6
を有し、ブ−ム支持ロ−プ5で支持している場合であ
る。この場合にもシ−ブ付特殊エキステンション7を上
ブ−ム1aと下ブ−ム1bの中間に取付け、これをブ−
ム支持ロ−プ5との間に設けた従来型の中間支持部6で
支持している。図3に示すように特殊中間エキステンシ
ョン7には巻上ロ−プ9用のシ−ブ7aと7b及び図示
しない巻上ウインチが別に設けられている。FIG. 2 shows the case of a long boom.
And is supported by a boom support rope 5. In this case as well, the special extension 7 with a sheave is mounted between the upper and lower beams 1a and 1b.
The supporting member is supported by a conventional intermediate supporting portion 6 provided between the supporting member 5 and the supporting rod 5. As shown in FIG. 3, the special intermediate extension 7 is provided with separate sheaves 7a and 7b for the hoisting rope 9 and a hoisting winch (not shown).
【0008】図4は特殊中間エキステンション7の平面
図、図5は同じく側面図で、ブラケット13の4隅上下
に上ブ−ム1a及び下ブ−ム1bとのブ−ム連結用ラグ
14が設けられている。FIG. 4 is a plan view of the special intermediate extension 7, and FIG. 5 is a side view of the same. A lug 14 for connecting a boom to the upper boom 1a and the lower boom 1b is provided above and below four corners of the bracket 13. Is provided.
【0009】さて、通常のクレ−ンの場合は、ブ−ムト
ップに主フックを、又特に必要な場合は、補助シ−ブを
取り付けて作業するが、これでは作業範囲の半径が制限
される。最小半径よりさらに本体の近くで作業する必要
のある場合は、ブ−ム角を上限より更に巻き上げ、危険
を覚悟の上で作業せざるを得ないが、事故につながる場
合もある。これを回避するためには、ブ−ムを短かく組
みかえることが必要であった。In the case of ordinary crane, work is performed by attaching a main hook to a boom top and, if necessary, an auxiliary sheave. However, this limits the radius of the working range. . If it is necessary to work closer to the main body than the minimum radius, the boom angle must be raised further than the upper limit, and work must be performed with a sense of danger, but this may lead to an accident. To avoid this, it was necessary to reshuffle the boom.
【0010】[0010]
【発明の効果】本発明においてはブ−ムを短かく組みか
えることなく、ブ−ムの中間にシ−ブ付特殊エキステン
ション7を組み込み、ブ−ムのトップでも、又ブ−ムの
中間でも、何れでも荷重を吊ることができる。かくして
通常の作業範囲(半径min)以下の至近距離で荷を吊るこ
とができる。ブ−ム中間吊りによる荷重の受けを、ブ−
ムのみの曲げでもたせることなく、ブ−ムペンダント5
より中間支持部6又は8をとったので、これで荷重を受
けもたせることができるので安全である。また、比較的
短いブ−ムの場合には、中間吊りがフ−トに近い位置に
あれば、ライブマスト11の頂部から特殊エキステンシ
ョン7との間に直接支持ロ−プ12を取り付け、この支
持ロ−プ12で反力を受けもつので、大荷重を吊ること
ができる。According to the present invention, the special extension 7 with a sheave is incorporated in the middle of the boom without changing the boom shortly. However, any of them can suspend the load. Thus, the load can be suspended at a close distance less than the normal working range (radius min). Receive the load from the middle boom suspension.
Boom pendant 5 without bending
Since the intermediate support portion 6 or 8 is used, it is possible to receive a load with this, and it is safe. In the case of a relatively short boom, if the intermediate suspension is located at a position close to the foot, a support rope 12 is attached directly between the top of the live mast 11 and the special extension 7. Since the support rope 12 receives a reaction force, a large load can be hung.
【図1】本発明の第一実施形態を示す。FIG. 1 shows a first embodiment of the present invention.
【図2】本発明の第二実施形態を示す。FIG. 2 shows a second embodiment of the present invention.
【図3】シ−ブ付特殊エキステンション近傍の詳細図。FIG. 3 is a detailed view of the vicinity of a special extension with a sheave.
【図4】特殊エキステンションの平面図。FIG. 4 is a plan view of a special extension.
【図5】図4のA矢視図。FIG. 5 is a view taken in the direction of the arrow A in FIG. 4;
【図6】公知短尺ブ−ムを有するクロ−ラクレ−ン。FIG. 6 is a cradle having a known short boom.
【図7】公知長尺ブ−ムを有し、中間支持部で支持した
クロ−ラクレ−ン。FIG. 7 is a crawler crane having a known long boom and supported by an intermediate support.
1 ブ−ム 1a 上ブ−ム 1b 下ブ−ム 2 巻上ドラム 3 巻上ロ−プ 4 シ−ブ 5 ブ−ム支持ロ−プ 6 中間支持部 7 特殊エキステンション 8 中間支持部 9 巻上ロ−プ 10 フック 11 ライブマスト 12 支持ロ−プ 13 ブラケット 14 連結用ラグ DESCRIPTION OF SYMBOLS 1 Boom 1a Upper boom 1b Lower boom 2 Hoisting drum 3 Hoisting rope 4 Sheave 5 Boom support rope 6 Intermediate support part 7 Special extension 8 Intermediate support part 9 Rolls Upper rope 10 Hook 11 Live mast 12 Support rope 13 Bracket 14 Connecting lug
Claims (3)
位置を上ブ−ム(1a)と下ブ−ム(1b)として分け、上ブ−
ム(1a)と下ブ−ム(1b)間をシ−ブ付特殊エキステンショ
ン(7)で連結し、特殊エキステンション(7)に設けた中
間支持部(8)を介しブ−ム支持ロ−プ(5)でシ−ブ付特
殊エキステンション(7)を支持したことを特徴とするク
レ−ンのブ−ム中間部での吊上機構。A multi-stage short boom (1) is divided into an arbitrary boom connection position as an upper boom (1a) and a lower boom (1b).
A special extension (7) with a sheave connects the arm (1a) and the lower arm (1b) with a special support (7) and an intermediate support (8) provided on the arm (8). A lifting mechanism at the middle of the crane's boom, wherein the crane supports the special extension with a sheave (5).
ブラケット(13)を有し、ブラケット(13)の4隅上下に上
ブ−ム(1a)と下ブ−ム(1b)との連結用ラグ(14)を有し、
前記ブラケット(13)の両側に巻上ロ−プ(9)を案内する
シ−ブ(7a)及びシ−ブ(7b)を有していることを特徴とす
る請求項1記載のクレ−ンのブ−ム中間部での吊上機
構。2. A special extension with sheave (7),
It has a bracket (13), and has a lug (14) for connecting the upper boom (1a) and the lower boom (1b) above and below the four corners of the bracket (13),
2. A crane according to claim 1, further comprising a sheave (7a) and a sheave (7b) for guiding a hoisting rope (9) on both sides of said bracket (13). Lifting mechanism at the middle of the boom.
殊エキステンション(7)との間に支持ロ−プ(12)を取付
たことを特徴とする請求項1又は請求項2記載のクレ−
ンのブ−ム中間部での吊上機構。3. A support rope (12) is mounted between the top of the live mast (11) and the special extension with sheave (7). Cray of
Lifting mechanism at the middle of the boom.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27996398A JP3227535B2 (en) | 1998-10-01 | 1998-10-01 | Lifting mechanism at the middle of the crane's boom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27996398A JP3227535B2 (en) | 1998-10-01 | 1998-10-01 | Lifting mechanism at the middle of the crane's boom |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000109288A true JP2000109288A (en) | 2000-04-18 |
JP3227535B2 JP3227535B2 (en) | 2001-11-12 |
Family
ID=17618381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27996398A Expired - Fee Related JP3227535B2 (en) | 1998-10-01 | 1998-10-01 | Lifting mechanism at the middle of the crane's boom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3227535B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102701085A (en) * | 2012-06-20 | 2012-10-03 | 徐州重型机械有限公司 | Hoisting device and crane |
CN102795560A (en) * | 2012-08-24 | 2012-11-28 | 中联重科股份有限公司 | Engineering machine and main arm thereof, and method for detecting and correcting lateral curvature of main arm of engineering machine |
JP2013129500A (en) * | 2011-12-21 | 2013-07-04 | Kato Works Co Ltd | Load hoisting device |
-
1998
- 1998-10-01 JP JP27996398A patent/JP3227535B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013129500A (en) * | 2011-12-21 | 2013-07-04 | Kato Works Co Ltd | Load hoisting device |
CN102701085A (en) * | 2012-06-20 | 2012-10-03 | 徐州重型机械有限公司 | Hoisting device and crane |
CN102701085B (en) * | 2012-06-20 | 2014-07-16 | 徐州重型机械有限公司 | Hoisting device and crane |
CN102795560A (en) * | 2012-08-24 | 2012-11-28 | 中联重科股份有限公司 | Engineering machine and main arm thereof, and method for detecting and correcting lateral curvature of main arm of engineering machine |
Also Published As
Publication number | Publication date |
---|---|
JP3227535B2 (en) | 2001-11-12 |
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