Title:
DEVICE FOR CONTROLLING WORKING UNIT OF CONSTRUCTION EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2020/071567
Kind Code:
A1
Abstract:
Provided is a device for controlling a working unit of construction equipment which comprises a hydraulic control device configured to hydraulically control a working unit and operated by an operating lever, a plurality of sub-electronic control units (ECU) electrically connected with the hydraulic control device, a main ECU configured to receive information on states of the hydraulic control device and the plurality of sub-ECUs, a relay configured to apply or cut off electric power to the plurality of sub-ECUs by a signal generated from the main ECU, and an emergency mode switch configured to turn an emergency mode on/off, wherein, when the emergency mode switch is turned on, the relay to which electric power is cut off according to a main ECU's failure diagnosis signal applies or cuts off electric power to the plurality of sub-ECUs by movement of the operating lever.
Inventors:
PARK DO SANG (KR)
Application Number:
PCT/KR2018/011703
Publication Date:
April 09, 2020
Filing Date:
October 02, 2018
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
PARK DO SANG (KR)
PARK DO SANG (KR)
International Classes:
E02F9/22; E02F9/20
Foreign References:
| KR20100134332A | 2010-12-23 | |||
| JP2005264605A | 2005-09-29 | |||
| KR20110073888A | 2011-06-30 | |||
| JP2005273894A | 2005-10-06 | |||
| JP2006104836A | 2006-04-20 |
Other References:
See also references of EP 3861176A4
Attorney, Agent or Firm:
HANA IP LAW FIRM (KR)
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