Title:
SAFE SWING SYSTEM FOR EXCAVATOR
Document Type and Number:
WIPO Patent Application WO/2019/146818
Kind Code:
A1
Abstract:
A system for swinging an upper swing body of construction equipment including a lower travel body, the upper swing body located on the lower travel body to be able to swing, and a function unit attached to the upper swing body to lift an object or dig the earth. A swing function regulator regulates a swing function of the upper swing body. An electric proportional valve controls a swing torque of the upper swing body. A controller is connected to the swing function regulator to control the electric proportional valve. The system limit the swing torque of an excavator during a swing and travel operation, so that the swing and travel operation can be safely undertaken.
Inventors:
SUK OKJIN (KR)
LEE CHUNHAN (KR)
LEE CHUNHAN (KR)
Application Number:
PCT/KR2018/001198
Publication Date:
August 01, 2019
Filing Date:
January 26, 2018
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
SUK OKJIN (KR)
LEE CHUNHAN (KR)
SUK OKJIN (KR)
LEE CHUNHAN (KR)
International Classes:
E02F9/12
Foreign References:
| US20160348340A1 | 2016-12-01 | |||
| US20170342683A1 | 2017-11-30 | |||
| US20140303855A1 | 2014-10-09 | |||
| US20130245897A1 | 2013-09-19 | |||
| JP2015214808A | 2015-12-03 |
Attorney, Agent or Firm:
KIM, Seon-Min (KR)
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