JPH045476U - - Google Patents
Info
- Publication number
- JPH045476U JPH045476U JP4480490U JP4480490U JPH045476U JP H045476 U JPH045476 U JP H045476U JP 4480490 U JP4480490 U JP 4480490U JP 4480490 U JP4480490 U JP 4480490U JP H045476 U JPH045476 U JP H045476U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- distal
- proximal
- links
- tip
- 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)
- Forklifts And Lifting Vehicles (AREA)
Description
第1図は、本考案の折り曲げブームの折り畳み
状態の側面図、第2図は第1図のA−A断面図、
第3図は、従来の折り曲げブームの折り畳み状態
の側面図、第4図は第3図のB−B断面図である
。
基端側ブーム……1、先端側ブーム……2、第
一リンク……6、第二リンク……7、起伏シリン
ダ……9、面取り部……1b,2b。
Fig. 1 is a side view of the folding boom of the present invention in a folded state, Fig. 2 is a sectional view taken along line A-A in Fig. 1,
FIG. 3 is a side view of a conventional folding boom in a folded state, and FIG. 4 is a sectional view taken along line BB in FIG. 3. Proximal boom...1, distal boom...2, first link...6, second link...7, undulation cylinder...9, chamfered portion...1b, 2b.
Claims (1)
行な折り畳み状態と伸展した伸展状態との間で起
伏可能なよう、基端側ブーム1の先端に先端側ブ
ーム2を起伏自在に枢着連結3し、それぞれその
基端部を基端側ブーム1の先端部および先端側ブ
ームの2の基端部適所に枢着連結4,5した第一
および第二リンク6,7を、前記基端側ブーム1
および先端側ブーム2の左右両側にそれぞれ配置
し、左右の第一および第二リンク6,7の各先端
部を折り畳み側の空間で枢着連結8し、且つ先端
側ブーム2の先端寄り左右位置にそれぞれその基
端部を連結した左右一対の起伏シリンダ9,9の
各先端部を左右の第一または第二リンクの各先端
部に連結し、これら左右一対の起伏シリンダ9,
9で先端側ブーム2を起伏駆動するよう構成した
折り曲げブームであつて、 前記基端側ブームと先端側ブームの折り畳み状
態における各対向面の左右側端部に面取り部分を
形成すると共に、折り畳み状態において前記左右
の起伏シリンダが、その軸線を先端側ブームの軸
線とほぼ平行な状態で、少なくともその一部が対
向する各面取り部分間に位置するよう構成したこ
とを特徴とする折り曲げブーム。[Scope of Claim for Utility Model Registration] A distal boom is provided at the distal end of the proximal boom 1 so that the distal boom 2 can be raised and lowered between a folded state in which the distal boom 2 is substantially parallel to the proximal boom 1 and an extended state in which it is extended. 2 are pivotally connected 3 so that they can be raised and lowered, and their base ends are pivotally connected 4 and 5 to the tip of the proximal boom 1 and the proximal ends of 2 of the distal boom 2, respectively. 6 and 7, the proximal boom 1
and are arranged on the left and right sides of the tip side boom 2, respectively, and the tips of the left and right first and second links 6, 7 are pivotally connected 8 in the space on the folding side, and the left and right positions near the tip of the tip side boom 2 are arranged. The distal ends of a pair of left and right undulation cylinders 9, 9 whose base ends are connected to the respective distal ends of the left and right first or second links are connected to the respective distal ends of the left and right first or second links, and these pair of left and right undulation cylinders 9,
9 is a folding boom configured to drive the distal end boom 2 up and down, wherein chamfered portions are formed at the left and right end portions of each opposing surface of the base end boom and the distal end boom in the folded state, and The folding boom is characterized in that the left and right undulating cylinders are configured such that their axes are substantially parallel to the axis of the distal boom, and at least a portion thereof is located between the opposing chamfered portions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4480490U JP2507256Y2 (en) | 1990-04-25 | 1990-04-25 | Folding boom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4480490U JP2507256Y2 (en) | 1990-04-25 | 1990-04-25 | Folding boom |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH045476U true JPH045476U (en) | 1992-01-20 |
JP2507256Y2 JP2507256Y2 (en) | 1996-08-14 |
Family
ID=31558428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4480490U Expired - Fee Related JP2507256Y2 (en) | 1990-04-25 | 1990-04-25 | Folding boom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2507256Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017081715A (en) * | 2015-10-29 | 2017-05-18 | 株式会社加藤製作所 | Jib derricking device of work machine |
-
1990
- 1990-04-25 JP JP4480490U patent/JP2507256Y2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017081715A (en) * | 2015-10-29 | 2017-05-18 | 株式会社加藤製作所 | Jib derricking device of work machine |
Also Published As
Publication number | Publication date |
---|---|
JP2507256Y2 (en) | 1996-08-14 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |