Title:
HYDRAULIC DRIVE DEVICE AND CONSTRUCTION MACHINE PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2023/153095
Kind Code:
A1
Abstract:
The present invention provides: a hydraulic drive device that can inhibit acceleration of an actuator, even in a case in which the engine speed is caused to increase for a purpose other than acceleration of the actuator; and a construction machine provided with the same. A controller (50) of the hydraulic drive device performs pump flow rate control, which is control for increasing the engine speed and adjusting the pump volume of a hydraulic pump (12), so as to bring the pump flow rate of the hydraulic pump (12) after an increase in the engine speed to a value corresponding to the pump flow rate of the hydraulic pump (12) before the increase in the engine speed in a case where the engine speed is caused to increase for a prescribed purpose other than acceleration of the actuator.
Inventors:
FUJITA SHUHEI
Application Number:
PCT/JP2022/047400
Publication Date:
August 17, 2023
Filing Date:
December 22, 2022
Export Citation:
Assignee:
KOBELCO CONSTR MACH CO LTD (JP)
International Classes:
F01P5/04; E02F9/22; F02D29/00; F02D29/04
Domestic Patent References:
| WO2011093400A1 | 2011-08-04 |
Foreign References:
| JP2005344766A | 2005-12-15 | |||
| JP2016223123A | 2016-12-28 |
Attorney, Agent or Firm:
KOTANI, Masataka et al. (JP)
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