JPS54140348A - Housing device of extension boom in expansion boom - Google Patents
Housing device of extension boom in expansion boomInfo
- Publication number
- JPS54140348A JPS54140348A JP14602374A JP14602374A JPS54140348A JP S54140348 A JPS54140348 A JP S54140348A JP 14602374 A JP14602374 A JP 14602374A JP 14602374 A JP14602374 A JP 14602374A JP S54140348 A JPS54140348 A JP S54140348A
- Authority
- JP
- Japan
- Prior art keywords
- boom
- length
- expansion
- extension
- support pin
- 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)
Abstract
PURPOSE: To further expand the length of an expansion boom as necessary up to length more than the length while housing an extension boom when the extension boom is not used, in the expansion boom that the maximum stretch length is beforehand set.
CONSTITUTION: When stretching the length of an expansion boom up to length more than the maximum stretch length of the expansion boom 1 by using an extension boom 4, one side of the base ends of the extension boom 4 is connected to one side of the noses of an inside boom 3 in a revolution-free shape by means of a pivotal support pin 5, and a pivotal support pin 6 is inserted, thus fixing both booms under a stretching condition. When intending to house the extension boom 4 to a housing location under a condition that the boom is not used, said pivotal support pin 6 is pulled out, and the boom 4 is turned up to a location along a boom 2 at the base end side centering around the pivotal support pin 5 and folded up. A deep groove block 7 is connected to a regulating rail 8 of the boom 2 with the contraction operation of the expansion boom 1, and the boom 4 is fixed under a housing condition.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14602374A JPS54140348A (en) | 1974-12-18 | 1974-12-18 | Housing device of extension boom in expansion boom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14602374A JPS54140348A (en) | 1974-12-18 | 1974-12-18 | Housing device of extension boom in expansion boom |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5039896B2 JPS5039896B2 (en) | 1975-12-20 |
JPS54140348A true JPS54140348A (en) | 1979-10-31 |
Family
ID=15398341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14602374A Granted JPS54140348A (en) | 1974-12-18 | 1974-12-18 | Housing device of extension boom in expansion boom |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54140348A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4595108A (en) * | 1982-01-26 | 1986-06-17 | Kabushiki Kaisha Kobe Seiko Sho | Method for stretching and folding extension jib in wheeled type crane |
US4658972A (en) * | 1982-01-26 | 1987-04-21 | Kabushiki Kaisha Kobe Seiko Sho | Method for stretching and folding extension jib in wheeled type crane |
US5960970A (en) * | 1996-04-26 | 1999-10-05 | Manitowoc Crane Group Inc | Multiple position wire rope guide |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5920965Y2 (en) * | 1976-02-03 | 1984-06-19 | 竹川鉄工株式会社 | Woodworking super finishing planer |
JPS5590407U (en) * | 1978-12-19 | 1980-06-23 |
-
1974
- 1974-12-18 JP JP14602374A patent/JPS54140348A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4595108A (en) * | 1982-01-26 | 1986-06-17 | Kabushiki Kaisha Kobe Seiko Sho | Method for stretching and folding extension jib in wheeled type crane |
US4658972A (en) * | 1982-01-26 | 1987-04-21 | Kabushiki Kaisha Kobe Seiko Sho | Method for stretching and folding extension jib in wheeled type crane |
US5960970A (en) * | 1996-04-26 | 1999-10-05 | Manitowoc Crane Group Inc | Multiple position wire rope guide |
Also Published As
Publication number | Publication date |
---|---|
JPS5039896B2 (en) | 1975-12-20 |
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