JPH0449189U - - Google Patents
Info
- Publication number
- JPH0449189U JPH0449189U JP9022990U JP9022990U JPH0449189U JP H0449189 U JPH0449189 U JP H0449189U JP 9022990 U JP9022990 U JP 9022990U JP 9022990 U JP9022990 U JP 9022990U JP H0449189 U JPH0449189 U JP H0449189U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- base end
- tip
- booms
- stage simultaneous
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は、本考案の三段同時伸縮ブームにおけ
る第三ブーム伸長状態固定装置の説明図、第２図
は、従来の第三ブーム伸長状態固定装置の説明図
である。
第一ブーム……１、第二ブーム……２、第三ブ
ーム……３、ロープ連動機構……Ａ、伸縮シリン
ダー……４、係合部……１１、固定ピン……Ｃ、
滑車……１２、油圧ホース……１３。
FIG. 1 is an explanatory diagram of a third boom extension state fixing device in a three-stage simultaneous telescopic boom of the present invention, and FIG. 2 is an explanatory diagram of a conventional third boom extension state fixing device. First boom...1, Second boom...2, Third boom...3, Rope interlocking mechanism...A, Telescopic cylinder...4, Engagement part...11, Fixed pin...C,
Pulley...12, Hydraulic hose...13.
Claims (1)
ブームを順次伸縮自在に嵌挿し、これらブーム間
に隣接するブーム間が同時に同量宛伸縮するよう
ロープ連動機構を取りつけ、且つ第一ブームと第
二ブーム間に伸縮シリンダを介装してなる三段同
時伸縮ブームにおいて、第三ブームの基端部に、
第二ブームの適所に配置した係合部に係合して第
三ブームの伸長状態を固定するための油圧作動式
の固定ピンを取り付け、この固定ピンの駆動油圧
を、第二ブーム先端部に配設した滑車、または先
端部が三段同時伸縮ブーム内で第二ブーム先端部
に対応する位置に位置するようにして第二ブーム
基端部に連結した連結杆の先端部に配設した滑車
を経由して、第一ブームの基端部と第三ブームの
基端部間にＵ字状に懸け回した油圧ホースで以て
送油するよう構成したことを特徴とする三段同時
伸縮ブームにおける第三ブーム伸長状態固定装置
。 The second and third booms on the tip side are sequentially telescopically inserted into the first boom on the base end side, and a rope interlocking mechanism is installed between these booms so that the adjacent booms can simultaneously expand and contract by the same amount. In a three-stage simultaneous telescopic boom in which a telescopic cylinder is interposed between one boom and a second boom, at the base end of the third boom,
A hydraulically operated fixing pin is installed to fix the extended state of the third boom by engaging with the engaging part placed at the appropriate location on the second boom, and the driving hydraulic pressure of this fixing pin is applied to the tip of the second boom. or a pulley installed at the tip of a connecting rod connected to the base end of the second boom such that its tip is located at a position corresponding to the tip of the second boom within the three-stage simultaneous telescopic boom. A three-stage simultaneous telescopic boom characterized in that oil is sent via a hydraulic hose that is routed in a U-shape between the base end of the first boom and the base end of the third boom. Third boom extension fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9022990U JPH0449189U (en) | 1990-08-28 | 1990-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9022990U JPH0449189U (en) | 1990-08-28 | 1990-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0449189U true JPH0449189U (en) | 1992-04-24 |
Family
ID=31824800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9022990U Pending JPH0449189U (en) | 1990-08-28 | 1990-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449189U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58162492A (en) * | 1982-03-17 | 1983-09-27 | 新明和工業株式会社 | Lubricating device for multistage boom |
-
1990
- 1990-08-28 JP JP9022990U patent/JPH0449189U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58162492A (en) * | 1982-03-17 | 1983-09-27 | 新明和工業株式会社 | Lubricating device for multistage boom |
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