JPS54140348A - Housing device of extension boom in expansion boom - Google Patents

Housing device of extension boom in expansion boom

Info

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
Application number
JP14602374A
Other languages
Japanese (ja)
Other versions
JPS5039896B2 (en
Inventor
Tadamichi Fujioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tadano Ltd
Original Assignee
Tadano Iron Works Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tadano Iron Works Co Ltd filed Critical Tadano Iron Works Co Ltd
Priority to JP14602374A priority Critical patent/JPS54140348A/en
Publication of JPS5039896B2 publication Critical patent/JPS5039896B2/ja
Publication of JPS54140348A publication Critical patent/JPS54140348A/en
Granted legal-status Critical Current

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
JP14602374A 1974-12-18 1974-12-18 Housing device of extension boom in expansion boom Granted JPS54140348A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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