JPS61157587U - - Google Patents
Info
- Publication number
- JPS61157587U JPS61157587U JP3883185U JP3883185U JPS61157587U JP S61157587 U JPS61157587 U JP S61157587U JP 3883185 U JP3883185 U JP 3883185U JP 3883185 U JP3883185 U JP 3883185U JP S61157587 U JPS61157587 U JP S61157587U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- bracket
- fulcrum
- contract
- extension
- 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
- 230000008602 contraction Effects 0.000 claims 2
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案一実施例のブーム格納状態にお
ける側面図、第２図は同ビーム張出し状態におけ
る側面図、第３図は第１図―線に沿う断面図
である。
１１はトツプブーム、１４はブラケツト、２０
はブーム、Ａは主ブーム構体、Ｂはブーム伸縮機
構、Ｃはブーム作動機構。
FIG. 1 is a side view of an embodiment of the present invention in a boom retracted state, FIG. 2 is a side view of the same beam in an extended state, and FIG. 3 is a sectional view taken along the line of FIG. 1. 11 is the top boom, 14 is the bracket, 20
is the boom, A is the main boom structure, B is the boom extension mechanism, and C is the boom operating mechanism.
Claims (1)
先端部にブラケツト１４を支点まわりに揺動可能
に設け、ブラケツト１４にブーム２０を前後動可
能に設け、主ブーム構体Ａにトツプブーム１１の
伸縮動を行うトツプブーム伸縮機構Ｂを設け、主
ブーム構体Ａにトツプブーム１１の伸縮動に同期
してブーム２０を伸縮させ且つブーム２０を支点
まわりに屈折させるブーム作動機構Ｃを設けたこ
とを特徴とするクレーンのブーム装置。 A bracket 14 is provided at the tip of the top boom 11 of the multi-stage main boom structure A so as to be swingable around a fulcrum, and a boom 20 is provided on the bracket 14 so as to be movable back and forth, so that the main boom structure A allows the top boom 11 to extend and contract. A crane boom characterized in that a top boom extension/contraction mechanism B is provided, and a boom operating mechanism C is provided in the main boom structure A to extend/contract the boom 20 in synchronization with the extension/contraction movement of the top boom 11 and bend the boom 20 around a fulcrum. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3883185U JPH0444546Y2 (en) | 1985-03-20 | 1985-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3883185U JPH0444546Y2 (en) | 1985-03-20 | 1985-03-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61157587U true JPS61157587U (en) | 1986-09-30 |
| JPH0444546Y2 JPH0444546Y2 (en) | 1992-10-20 |
Family
ID=30546201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3883185U Expired JPH0444546Y2 (en) | 1985-03-20 | 1985-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444546Y2 (en) |
-
1985
- 1985-03-20 JP JP3883185U patent/JPH0444546Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0444546Y2 (en) | 1992-10-20 |