Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/204157
Kind Code:
A1
Abstract:
A work machine comprising: an actuator that extends and retracts a telescopic boom; an electric drive source that is provided in the actuator and drives using power supplied from a power source; a work unit that operates on the basis of the motive force of the electric drive source; and a joint that has a drive-side element fixed to a first transmission shaft that rotates on the basis of the motive force of the electric drive source and a driven-side element fixed to a second transmission shaft connected to the work unit, said joint being able to take a transmission state in which both the drive-side element and the driven-side element rotate and a non-transmission state in which only either the drive-side element or the driven-side element rotates.
Inventors:
ZUSHI MASAHIDE (JP)
NAGAHAMA KAZU (JP)
FUKUOKA TOSHIHIKO (JP)
SHIRAI MANATO (JP)
NAGAHAMA KAZU (JP)
FUKUOKA TOSHIHIKO (JP)
SHIRAI MANATO (JP)
Application Number:
PCT/JP2020/015275
Publication Date:
October 08, 2020
Filing Date:
April 03, 2020
Export Citation:
Assignee:
TADANO LTD (JP)
International Classes:
B66C23/693
Foreign References:
| JPS4881252A | 1973-10-31 | |||
| JP2017159973A | 2017-09-14 | |||
| JP2015218031A | 2015-12-07 | |||
| JP2011207598A | 2011-10-20 | |||
| JPS4878642A | 1973-10-22 | |||
| JP2012096928A | 2012-05-24 | |||
| JP2019072147A | 2019-05-16 |
Other References:
See also references of EP 3950564A4
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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