JPS62176184U - - Google Patents
Info
- Publication number
- JPS62176184U JPS62176184U JP6315386U JP6315386U JPS62176184U JP S62176184 U JPS62176184 U JP S62176184U JP 6315386 U JP6315386 U JP 6315386U JP 6315386 U JP6315386 U JP 6315386U JP S62176184 U JPS62176184 U JP S62176184U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- extension
- rope
- sheave
- 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)
Description
第１図、第２図は本考案の実施例を示す正面断
面図、平面図、第３図、第４図は従来例の正面断
面図、平面図である。
２８は伸長用ロープ、２９はシーブ、３０はイ
コライザシーブ。
1 and 2 are a front sectional view and a plan view showing an embodiment of the present invention, and FIGS. 3 and 4 are a front sectional view and a plan view of a conventional example. 28 is an extension rope, 29 is a sheave, and 30 is an equalizer sheave.
Claims (1)
２のブームを嵌挿し、この第２のブーム内に第３
のブームを伸長用ロープ２８と縮少用ロープ３１
を介して第２のブームとともに伸縮するように嵌
挿すると共に、前記伸長用ロープ２８の両端を第
３のブームの基端に固着し、かつ第２のブームの
先端に設けたシーブ２９を介して第１のブームの
先端に設けたイコライザシーブ３０に巻掛けたこ
とを特徴とするブーム伸縮装置。 A second boom is inserted into the first boom so as to extend and contract with a cylinder, and a third boom is inserted into the second boom.
The boom is extended by the extension rope 28 and the reduction rope 31.
At the same time, both ends of the extension rope 28 are fixed to the base end of the third boom, and the extension rope 28 is inserted through a sheave 29 provided at the tip of the second boom. A boom extension/retraction device characterized in that the equalizer sheave 30 is wound around an equalizer sheave 30 provided at the tip of a first boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986063153U JPH078546Y2 (en) | 1986-04-28 | 1986-04-28 | Boom telescopic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986063153U JPH078546Y2 (en) | 1986-04-28 | 1986-04-28 | Boom telescopic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62176184U true JPS62176184U (en) | 1987-11-09 |
| JPH078546Y2 JPH078546Y2 (en) | 1995-03-01 |
Family
ID=30898113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986063153U Expired - Lifetime JPH078546Y2 (en) | 1986-04-28 | 1986-04-28 | Boom telescopic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH078546Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60130286U (en) * | 1984-02-08 | 1985-08-31 | 株式会社 多田野鉄工所 | Boom simultaneous expansion and contraction device |
-
1986
- 1986-04-28 JP JP1986063153U patent/JPH078546Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60130286U (en) * | 1984-02-08 | 1985-08-31 | 株式会社 多田野鉄工所 | Boom simultaneous expansion and contraction device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH078546Y2 (en) | 1995-03-01 |
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