JPS6429537A - Pantagraph type expansion mast - Google Patents

Pantagraph type expansion mast

Info

Publication number
JPS6429537A
JPS6429537A JP18551587A JP18551587A JPS6429537A JP S6429537 A JPS6429537 A JP S6429537A JP 18551587 A JP18551587 A JP 18551587A JP 18551587 A JP18551587 A JP 18551587A JP S6429537 A JPS6429537 A JP S6429537A
Authority
JP
Japan
Prior art keywords
link
links
counterposed
bendable
laid
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
Application number
JP18551587A
Other languages
Japanese (ja)
Inventor
Shigeo Mita
Kenji Sakano
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP18551587A priority Critical patent/JPS6429537A/en
Publication of JPS6429537A publication Critical patent/JPS6429537A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To improve rigidity and simplify extending/contracting works by laying X-shaped links and horizontal telescopic beam members between the ends of links 30 which are bendable at the middle and counterposed at respective stages of parallelly formed supports. CONSTITUTION: Supports 47 in which links 30 bendable at the middle are longitudinally connected in multiple stages are parallelly arranged, and X-shaped links 28 are laid between the ends of the links 30 counterposed in respective stages, and further, horizontal telescopic beam members 29 are laid between the ends across them. In an extensible mast 20 constituted as above, when the beam member 29 contracts and the link 30 bends to the closing side of the link 28, the support 47 extends, and when the bent member is moved to the opening side of the link 28, the beam member 29 extends and the link 30 is returned to the opening side of the link 28 and the support 47 is folded. In this way, the rigidity of the trussed structure can be improved and the extending/ contracting work time can be shortened.
JP18551587A 1987-07-27 1987-07-27 Pantagraph type expansion mast Pending JPS6429537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18551587A JPS6429537A (en) 1987-07-27 1987-07-27 Pantagraph type expansion mast

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18551587A JPS6429537A (en) 1987-07-27 1987-07-27 Pantagraph type expansion mast

Publications (1)

Publication Number Publication Date
JPS6429537A true JPS6429537A (en) 1989-01-31

Family

ID=16172135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18551587A Pending JPS6429537A (en) 1987-07-27 1987-07-27 Pantagraph type expansion mast

Country Status (1)

Country Link
JP (1) JPS6429537A (en)

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