Title:
CONSTRUCTION MACHINERY
Document Type and Number:
Japanese Patent JP2014134015
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To achieve accurate control by reliably setting a slewing speed at zero without reference to an actual value of sensor output at the stop of slewing.SOLUTION: An super structure is driven for slewing by a revolving motor 8. While a remote control valve 11 serving as slewing operation means is operated for slewing, a slewing speed detected by a revolving speed sensor 27 is stored at a set time interval in a controller 17. A slewing brake 12 is operated after a lapse of set time from neutral return of the remote control valve 11, and a storage value of the slewing speed at a point of time of output of this brake operation command is recognized as zero and set.
Inventors:
TAJIMA KAZUHARU
UEDA KOJI
UEDA KOJI
Application Number:
JP2013002350A
Publication Date:
July 24, 2014
Filing Date:
January 10, 2013
Export Citation:
Assignee:
KOBELCO CONSTR MACHINERY LTD
International Classes:
E02F9/22; F15B11/028; F15B20/00
Domestic Patent References:
| JP2011001736A | 2011-01-06 | |||
| JPH10219749A | 1998-08-18 | |||
| JP2005278327A | 2005-10-06 | |||
| JP2010156136A | 2010-07-15 | |||
| JP2011001736A | 2011-01-06 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Muramatsu Toshiro
Masataka Otani
Muramatsu Toshiro
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