JPH0338230Y2 - - Google Patents
Info
- Publication number
- JPH0338230Y2 JPH0338230Y2 JP1985103537U JP10353785U JPH0338230Y2 JP H0338230 Y2 JPH0338230 Y2 JP H0338230Y2 JP 1985103537 U JP1985103537 U JP 1985103537U JP 10353785 U JP10353785 U JP 10353785U JP H0338230 Y2 JPH0338230 Y2 JP H0338230Y2
- Authority
- JP
- Japan
- Prior art keywords
- boom
- jib
- movable
- movable boom
- sheave
- 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
- 238000005452 bending Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、クレーンのブームにおけるジブを張
出しする装置に関するものである。従来の技術
固定ブームに可動ブームを伸縮自在に設けると
共に、固定ブームの側壁にジブを着脱自在に支持
し、このジブの基端を可動ブームの先端にピンで
着脱自在として、ピンでジブを可動ブームに連結
すると共に、ジブを横方向に回動して可動ブーム
に連結する横抱、横振り出し型式のもの。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for extending a jib in a crane boom. Conventional technology A movable boom is telescopically provided on a fixed boom, a jib is detachably supported on the side wall of the fixed boom, and the base end of the jib is detachably attached to the tip of a movable boom, and the jib is movable with the pin. It is a side-holding and side-swinging type that connects to the boom and rotates the jib laterally to connect to the movable boom.
ジブを固定ブームの側壁に着脱自在に支持し、
このジブを下方に回動して可動ブームに連結する
横抱、下振り出し型式のもの。 The jib is removably supported on the side wall of the fixed boom,
This is a side-holding, downward-swinging type in which the jib is rotated downward and connected to a movable boom.
ジブを固定ブームの下壁に着脱自在に取付けて
ジブを下方に回動することで可動ブームに連結す
る下抱、下振り出し型式のもの。 A lower-holding, lower-swing type in which the jib is removably attached to the lower wall of a fixed boom and connected to a movable boom by rotating the jib downwards.
考案が解決しようとする問題点
第１のものであると、ジブの回転範囲が大きい
からジブを可動ブームに連結したり、固定ブーム
に格納したりする際に大きなスペースを必要とす
ると共に、ジブを格納した状態では固定ブームの
側壁よりジブが出張るから走行時にジブが邪魔に
なつて直角通路幅が狭くなる。Problems that the invention aims to solve: The first problem is that the rotation range of the jib is large, so it requires a large space when connecting the jib to a movable boom or storing it in a fixed boom. When the boom is retracted, the jib protrudes from the side wall of the fixed boom, so the jib gets in the way when traveling and narrows the width of the right-angled passage.
第２のものであると、ジブを下方に回動させる
ための機構が複雑となり、第３のものであるとジ
ブが格納時に固定ブームの下壁より出張るから走
行時にジブが邪魔となつて側方視界が悪くなる。 If it is the second type, the mechanism for rotating the jib downward becomes complicated, and if it is the third type, the jib protrudes from the lower wall of the fixed boom when it is retracted, so the jib becomes a hindrance when traveling. Side visibility deteriorates.
また、第１，第２，第３のものであるとジブを
回動するにはオペレータが手動操作しているか
ら、ジブの張出し、格納作業が面倒であると共に
時間がかかる。 Furthermore, since the operator manually operates the first, second, and third jibs to rotate the jib, extending and retracting the jib is troublesome and time-consuming.
問題点を解決するための手段及び作用
固定ブームに第１・第２・第３可動ブームをシ
リンダ、ワイヤロープにより順次伸縮自在に嵌挿
すると共に、その最先端の第３可動ブーム内に基
部と先部を上下折曲自在に連結したジブを伸縮自
在に設けると共に、そのジブを基端に連結したジ
ブ張り出し用ワーヤロープを最先端の第３可動ブ
ームに設けたシーブより第１可動ブームに連結
し、第３可動ブームとジブの基部とに亘つてジブ
固定ストツパーを設けて、ジブを可動ブームとと
もに固定ブーム内に格納したり、シリンダを利用
して張り出したりできると共に、ジブの張り出し
ストロークを規制できるし、ジブを張り出すと先
部が下向に折曲してブームのフトコムを深くでき
るようにしたものである。Means and action for solving the problem The first, second, and third movable booms are telescopically inserted into the fixed boom in sequence using cylinders and wire ropes, and the base and the third movable boom are inserted into the third movable boom at the most advanced position. A jib is provided which is extendable and whose tip is connected so that it can be bent up and down, and a wire rope for extending the jib, which is connected to the base end, is connected to the first movable boom through a sheave provided on the third movable boom at the most advanced position. A jib fixing stopper is provided between the third movable boom and the base of the jib, so that the jib can be stored in the fixed boom together with the movable boom or extended using a cylinder, and the extension stroke of the jib can be regulated. However, when the jib is extended, the tip bends downward, allowing the bottom of the boom to be deepened.
実施例
矩形断面中空長尺材となつた固定ブーム１内に
は矩形断面中空長尺材となつた第１，第２，第３
可動ブーム２1，２2，２3が伸縮自在に順次嵌合
され、固定ブーム１と第１可動ブーム２1とに亘
つて第１シリンダ３が連結され、第２可動ブーム
２2と第１可動ブーム２1とに亘つて第２シリンダ
４が連結されていると共に、第２可動ブーム２2
と第３可動ブーム２3とに亘つて伸縮用ワイヤロ
ープ５が連結してある。Example: Inside the fixed boom 1, which is a hollow long material with a rectangular cross section, there are first, second and third booms, which are hollow long materials with a rectangular cross section.
The movable booms 2 1 , 2 2 , and 2 3 are telescopically fitted in order, and the first cylinder 3 is connected between the fixed boom 1 and the first movable boom 2 1 , and the second movable boom 2 2 and the first The second cylinder 4 is connected across the movable boom 2 1 and the second movable boom 2 2
A telescopic wire rope 5 is connected between the movable boom 23 and the third movable boom 23 .
第３可動ブーム２3内にはジブ６が伸縮自在に
嵌合されて格納、張り出し自在となつていると共
に、ジブ６は基部７と先部８とをピン９で折曲自
在に連結すると共に、リンク１０とピン１１とで
先部８の折れ曲りを規制し、基部７にはジブ張り
出し用ワイヤロープ１２の一端が連結され、他端
は第３可動ブーム２3の側壁１３に形成した窓１
４よりシーブ１５を経て第１可動ブーム２1の側
壁１６に設けたブラケツト１７の孔に挿通してナ
ツト１８で抜け止めされて着脱自在に連結してあ
る。 A jib 6 is telescopically fitted into the third movable boom 23 and can be freely retracted and extended. , the bending of the tip part 8 is restricted by the link 10 and the pin 11, one end of the wire rope 12 for extending the jib is connected to the base part 7, and the other end is connected to a window formed in the side wall 13 of the third movable boom 23 . 1
4, is inserted through a sheave 15 into a hole in a bracket 17 provided in a side wall 16 of the first movable boom 21 , and is secured with a nut 18 and removably connected.
１９はジブ固定ストツパーであり、第３図に示
すように第３可動ブーム２3の側壁１３は固着し
た筒体２０内にピン２１を嵌合し、このピン２１
をバネ２２で基部７のピン孔２３に嵌合する方向
に付勢保持したものである。 Reference numeral 19 denotes a jib fixing stopper, and as shown in FIG .
is biased and held by a spring 22 in the direction of fitting into the pin hole 23 of the base 7.
前記第３可動ブーム２3の側壁１３の先端側に
は主巻用アイドラシーブ２４と主巻用ポイントシ
ーブ２５とがジブ６と干渉しないように側方にオ
フセツトして設けられ、主巻用ワイヤロープ２６
が巻掛けられてジブ６と主巻用ワイヤロープ２６
とが干渉しないようにしてあると共に、上壁２７
には補巻用シーブ２８が設けられ、補巻用ワイヤ
ロープ２９はジブ６の先部８の先端に設けたシー
ブ３０に巻掛けてある。 A main hoisting idler sheave 24 and a main hoisting point sheave 25 are provided on the tip side of the side wall 13 of the third movable boom 23, offset laterally so as not to interfere with the jib 6, and the main hoisting wire rope 26
is wrapped around the jib 6 and the main winding wire rope 26
The upper wall 27 is designed so that it does not interfere with the
A sheave 28 for auxiliary winding is provided, and a wire rope 29 for auxiliary winding is wound around a sheave 30 provided at the tip of the tip portion 8 of the jib 6.
前記伸縮用ワイヤロープ５の両端は第３可動ブ
ーム２3に設けたシーブ３１と第２可動ブーム２2
に設けたシーブ３２を経て第１可動ブーム２1に
連結してある。 Both ends of the telescopic wire rope 5 are connected to a sheave 31 provided on the third movable boom 2 3 and a second movable boom 2 2 .
It is connected to the first movable boom 2 1 via a sheave 32 provided at the top.
しかして、ジブ６を第４図に示すように固定ブ
ーム１内に格納した状態より張り出しする場合に
は第２シリンダ４を伸長する。 Accordingly, when the jib 6 is extended from the state stored in the fixed boom 1 as shown in FIG. 4, the second cylinder 4 is extended.
これにより第５図に示すように第２可動ブーム
２2が第１可動ブーム２1に対して伸長すると共
に、シーブ３２が移動するから伸縮用ワイヤロー
プ５によつて第３可動ブーム２3が第２可動ブー
ム２2に対して伸長し、これによつてシーブ１５
が第２シリンダ４のストロークの２倍だけ移動
し、かつジブ張り出し用ワイヤロープ１２の他端
が第１可動ブームに連結してあるからジブ６が第
３可動ブーム２3に対して２倍のストロークだけ
伸長する。 As a result, as shown in FIG. 5, the second movable boom 22 extends relative to the first movable boom 21 , and the sheave 32 moves, so the third movable boom 23 is The second movable boom 22 is extended relative to the sheave 15.
moves by twice the stroke of the second cylinder 4, and the other end of the jib extending wire rope 12 is connected to the first movable boom, so the jib 6 moves by twice the stroke of the third movable boom 23. Extend only the stroke.
そして、ジブ６が所定位置までストロークする
とピン２１がピン孔２３に嵌合してジブ６がジブ
固定ストツパー１９で第３可動ブーム２3に固定
される。 When the jib 6 is stroked to a predetermined position, the pin 21 is fitted into the pin hole 23, and the jib 6 is fixed to the third movable boom 23 by the jib fixing stopper 19.
また、主巻用アイドラシーブ２４と主巻用ポイ
ントシーブ２５は第３可動ブーム２3の側壁１３
に設けられているから、主巻ワイヤロープがジブ
６と干渉することがない。 In addition, the main hoisting idler sheave 24 and the main hoisting point sheave 25 are connected to the side wall 13 of the third movable boom 23.
The main winding wire rope does not interfere with the jib 6.
また、第２シリンダ４のストロークの２倍の長
さでけジブ６を張り出しできて張り出し長さを十
分なものにできる。 Further, the jib 6 can be extended by twice the stroke of the second cylinder 4, and the extension length can be made sufficient.
なお、ジブ６を格納する場合には第２シリンダ
４を縮少すると共に、手動でジブ６を第３可動ブ
ーム２3とともに押し込みすれば良い。 In addition, when storing the jib 6, it is sufficient to retract the second cylinder 4 and manually push the jib 6 together with the third movable boom 23 .
この時、ジブ固定ストツパー１９のピン２１は
手動でピン孔２３より抜き出しすれば良い。 At this time, the pin 21 of the jib fixing stopper 19 can be manually pulled out from the pin hole 23.
考案の効果
ジブ６を可動ブームとともに固定ブーム１内に
格納できるから、走行時にジブ６が邪魔になつて
上方視界や側方視界を妨げることがないと共に、
直角通路幅を小さくできる。Effects of the invention Since the jib 6 can be stored in the fixed boom 1 together with the movable boom, the jib 6 does not get in the way when traveling and obstructs the upward and side views.
The width of the right-angled passage can be reduced.
第２シリンダ４を伸長することで伸縮用ワイヤ
ロープ５、シブ張り出し用ワイヤロープ１２によ
つてジブ６を第３可動ブーム２3より張り出しで
きるから、ジブ張出し時の前方スペースを小さく
できるし、手作業でないからその作業が簡単で短
時間に実施できるばかりか、構造が複雑となるこ
とがなく、しかも所定ストローク張り出しすると
ピン２１がピン孔２３に嵌合してジブ６の伸長を
規制して第３可動ブーム２3に固定できるし、基
部７に対して先部８が下向きに折曲しブームのフ
トコロを深して建物などに干渉せずよクレーン作
業できる。 By extending the second cylinder 4, the jib 6 can be extended from the third movable boom 23 using the telescopic wire rope 5 and the shib extension wire rope 12, so the front space when extending the jib can be reduced, and the Since it is not a work, the work is simple and can be carried out in a short time, and the structure does not become complicated.Moreover, when the predetermined stroke is extended, the pin 21 fits into the pin hole 23 to restrict the extension of the jib 6. 3. It can be fixed to the movable boom 2 3 , and the tip 8 is bent downward relative to the base 7, allowing the boom's bottom to be deepened to allow crane work without interfering with buildings, etc.
図面は本考案の実施例を示し、第１図は正面
図、第２図は平面図、第３図はジブ固定ストツパ
の断面図、第４図は格納状態の正面図、第５図は
ジブ張出し時の正面図である。
１は固定ブーム、６はジブ。
The drawings show an embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a plan view, Fig. 3 is a sectional view of the jib fixing stopper, Fig. 4 is a front view of the jib fixing stopper, and Fig. 5 is a front view of the jib fixing stopper. FIG. 1 is a fixed boom, 6 is a jib.
Claims (1)
２1，２2，２3を伸縮自在に順次嵌合し、固定ブ
ーム１と第１可動ブーム２1とに亘つて第１シリ
ンダ３を連結し、第２可動ブーム２2と第１可動
ブーム２1とに亘つて第２シリンダ４を連結し、
伸縮用ワイヤロープ５の両端を第３可動ブーム２
３に設けたシーブ３１と第２可動ブーム２2に設け
たシーブ３２を経て第１可動ブーム２1に連結し
てクレーンのブームとし、 基部７と先部８とがピン９で上下折曲自在に連
結され、リンク１０とピン１１とで先部８の下方
への折れ曲りを規制したジブ６を前記第３可動ブ
ーム２3内に伸縮自在に嵌合し、該ジブ６の基部
７にジブ張り出し用ワイヤロープ１２の一端を連
結し、その他端を第３可動ブーム２3の側壁１３
に形成した窓１４よりシーブ１５を経て第１可動
ブーム２1の側壁１６に連結し、 前記第３可動ブーム２3の側壁１３に設けたピ
ン２１をバネ２２で前記基部７のピン孔２３に嵌
合する方向に付勢してジブ固定ストツパー１９と
したことを特徴とするクレーンのジブ張出装置。[Claims for Utility Model Registration] First, second, and third movable booms 2 1 , 2 2 , and 2 3 are fitted in order in a fixed boom 1 in a telescopic manner, and the fixed boom 1 and the first movable boom 2 1 are telescopically fitted in sequence. The first cylinder 3 is connected between the second movable boom 22 and the first movable boom 21, and the second cylinder 4 is connected between the second movable boom 22 and the first movable boom 21,
Both ends of the telescopic wire rope 5 are connected to the third movable boom 2
It is connected to the first movable boom 2 1 through a sheave 31 provided on the second movable boom 2 2 and a sheave 32 provided on the second movable boom 2 2 to form a crane boom, and the base 7 and tip 8 can be bent up and down with pins 9. The jib 6, which is connected to the boom 2 and whose tip part 8 is prevented from bending downward by the link 10 and the pin 11, is telescopically fitted into the third movable boom 23 , and the jib 6 is connected to the base part 7 of the jib 6. One end of the overhanging wire rope 12 is connected, and the other end is connected to the side wall 13 of the third movable boom 23.
The pin 21 provided on the side wall 13 of the third movable boom 2 3 is connected to the side wall 16 of the first movable boom 2 1 through the sheave 15 through the window 14 formed in the window 14 . A jib extension device for a crane, characterized in that the jib fixing stopper 19 is biased in the direction of fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985103537U JPH0338230Y2 (en) | 1985-07-09 | 1985-07-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985103537U JPH0338230Y2 (en) | 1985-07-09 | 1985-07-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6211889U JPS6211889U (en) | 1987-01-24 |
| JPH0338230Y2 true JPH0338230Y2 (en) | 1991-08-13 |
Family
ID=30976182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985103537U Expired JPH0338230Y2 (en) | 1985-07-09 | 1985-07-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0338230Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573791B2 (en) * | 1976-05-25 | 1982-01-22 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6330793Y2 (en) * | 1980-06-03 | 1988-08-17 |
-
1985
- 1985-07-09 JP JP1985103537U patent/JPH0338230Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS573791B2 (en) * | 1976-05-25 | 1982-01-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6211889U (en) | 1987-01-24 |
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