Title:
旋回式作業機械の旋回駆動装置
Document Type and Number:
Japanese Patent JP6717880
Kind Code:
B2
Abstract:
To provide a turning driving device that can ensure suppression of the entry of a turning body into a work limited area and issue an appropriate warning to an operator.SOLUTION: The turning driving device comprises: a neutral brake-type control valve 30 that is provided between a hydraulic pump 20 and a turning motor 22; a pilot pressure control unit 28 that controls pilot pressure applied to the control valve 30 to operation pilot pressure corresponding to a turning command operation applied to a turning operation member 26; a turning brake area setting unit 42 that sets a turning brake area before a work limited area; a pilot pressure limitation unit 40 that identifies limit pilot pressure which is the upper limit value of the pilot pressure for braking turning in the turning brake area; and a warning control unit 40 that causes a warning device 50 to start a warning operation at a point of time when a limit determination condition for determining that the pilot pressure is limited to the limit pilot pressure is satisfied, and reserve the warning operation until the limit determination condition is satisfied.SELECTED DRAWING: Figure 2
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Inventors:
Naoto Hori
Ryota Inukai
Takuro Kishi
Taisuke Kakuo
Ryota Inukai
Takuro Kishi
Taisuke Kakuo
Application Number:
JP2018107125A
Publication Date:
July 08, 2020
Filing Date:
June 04, 2018
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
Kobelco Construction Machinery Co., Ltd.
Kobelco Construction Machinery Co., Ltd.
International Classes:
B66C23/94; F15B11/08; F15B20/00
Domestic Patent References:
| JP6329389A | ||||
| JP4065287U | ||||
| JP10310374A | ||||
| JP7041002U |
Foreign References:
| US20170253468 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Muramatsu Toshiro
Masataka Otani
Muramatsu Toshiro