Title:
HYDRAULIC CIRCUIT OF CONSTRUCTION MACHINE AND ITS CONTROLLING METHOD
Document Type and Number:
Japanese Patent JP2014177969
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic circuit of a construction machine and its controlling method, capable of correcting an electrical signal inputted to a hydraulic pump (a regulator) by using pressure values detected when a discharging flow rate of the hydraulic pump is the maximum flow rate and the minimum flow rate.SOLUTION: This invention relates to a hydraulic circuit of a construction machine for controlling a discharging flow rate of an electrically controlling type hydraulic pump characterized in that this hydraulic circuit includes detecting means for detecting pressures in which the discharging flow rate of the hydraulic pump is the maximum flow rate Qmax or the minimum flow rate Qmin and control means for correcting an operation of the hydraulic pump on the basis of flow rate instruction values when the discharging flow rate of the hydraulic pump is the maximum flow rates Qb, Qc and the minimum flow rates Qa, Qd and the pressures detected by the detecting means.
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Inventors:
KONDO HIDEKAZU
Application Number:
JP2013051024A
Publication Date:
September 25, 2014
Filing Date:
March 13, 2013
Export Citation:
Assignee:
SUMITOMO CONSTR MACHINERY MFG
International Classes:
F15B11/00; E02F9/22; F04B49/06
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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