DEVICE FOR CONTROLLING REGENERATED FLOW RATE FOR CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING SAME

Title:

DEVICE FOR CONTROLLING REGENERATED FLOW RATE FOR CONSTRUCTION MACHINE AND METHOD FOR CONTROLLING SAME

Document Type and Number:

WIPO Patent Application WO/2015/111775

Kind Code:

A1

Abstract:

Disclosed are a device for controlling a regenerated flow rate for a construction machine and a method for controlling the same, the device being able to supply a large chamber of an arm cylinder with a part of operating oil, which is discharged from the arm cylinder to an operating oil tank during arm-in driving, and regenerating the same. The present invention provides a device for controlling a regenerated flow rate for a construction machine, the device being characterized by comprising: a variable capacity-type hydraulic pump and a pilot pump; an arm cylinder driven by operating oil supplied from the hydraulic pump; a variable arm regeneration valve installed in a passage between the arm cylinder and the operating oil tank; and an electronic proportional valve installed in a passage between the pilot pump and the arm regeneration valve.

Inventors:

JUNG TAE-RANG (KR)
LEE CHUN-HAN (KR)

Application Number:

PCT/KR2014/000741

Publication Date:

July 30, 2015

Filing Date:

January 27, 2014

Export Citation:

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Assignee:

VOLVO CONSTR EQUIP AB (SE)
JUNG TAE-RANG (KR)
LEE CHUN-HAN (KR)

International Classes:

G05D7/06; E02F9/20; F15B11/00

Foreign References:

KR20120123069A	2012-11-07
JP2011196439A	2011-10-06
KR20130055302A	2013-05-28
US20130325268A1	2013-12-05
JP2011256814A	2011-12-22

Other References: