Title:
CONSTRUCTION EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2020/204238
Kind Code:
A1
Abstract:
One embodiment of the present invention provides construction equipment comprising: an undercarriage; an upper swing body rotatably supported on the undercarriage; a work device supported by the upper swing body and comprising a boom, an arm and a bucket, which operate by means of respective hydraulic cylinders; a control valve for controlling the boom cylinder; an electronic proportional pressure reducing valve for controlling a spool of the control valve; a control lever for outputting a control signal corresponding to the amount of control of a driver; a work setting unit for providing a work mode and target work surface setting function; a location information providing unit for, according to a work mode setting of the work setting unit, collecting and/or calculating location information of the work device and location information of a work surface that has been set; and an electronic control unit for calculating and outputting boom pilot pressure for the electronic proportional pressure reducing valve, wherein the electronic control unit controls the operation of the boom by using the control signal of the control lever and the location information collected and/or calculated by the location information providing unit.
Inventors:
KIM DONGSOO (KR)
KIM MIOK (KR)
KIM MIOK (KR)
Application Number:
PCT/KR2019/004108
Publication Date:
October 08, 2020
Filing Date:
April 05, 2019
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
KIM DONGSOO (KR)
KIM DONGSOO (KR)
International Classes:
E02F3/43; E02F9/20; E02F9/22
Foreign References:
| JPH07180173A | 1995-07-18 | |||
| KR100335361B1 | 2002-08-28 | |||
| JPH11190042A | 1999-07-13 | |||
| KR20020085663A | 2002-11-16 | |||
| JPH08302754A | 1996-11-19 | |||
| KR100974275B1 | 2010-08-06 |
Other References:
See also references of EP 3951072A4
Attorney, Agent or Firm:
HANA IP LAW FIRM (KR)
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