Title:
TELESCOPING BOOM AND WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/246577
Kind Code:
A1
Abstract:
This telescoping boom comprises: a tubular outside boom; an inside boom that is provided inside the outside boom in a manner allowing movement in an axial direction in relation to the outside boom; and a pair of guide devices that are provided at a top end section and both width direction end sections of the inside boom, wherein each of the pair of guide devices comprises a retaining section that is provided to the inside boom and has a first retaining surface and a second retaining surface forming a prescribed angle, a middle support member that has a first slanted surface on an outer surface thereof and is retained by the first retaining surface and the second retaining surface, and a guide member that has a second slanted surface contacting the first slanted surface, and a guide surface capable of sliding contact with an inner surface of the outside boom.
Inventors:
ISHII MASAHIRO (JP)
KASHIHARA MASAO (JP)
IIO SHOICHI (JP)
KASHIHARA MASAO (JP)
IIO SHOICHI (JP)
Application Number:
PCT/JP2020/022272
Publication Date:
December 10, 2020
Filing Date:
June 05, 2020
Export Citation:
Assignee:
TADANO LTD (JP)
International Classes:
B66C23/693; B66C23/697
Foreign References:
| JP2012126465A | 2012-07-05 | |||
| JP2010116232A | 2010-05-27 | |||
| JP2013112437A | 2013-06-10 | |||
| JP2012001321A | 2012-01-05 | |||
| US4257201A | 1981-03-24 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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