EP 0790356 B1 20020612 - CONTROLLER FOR EXCAVATORS
Title (en)
CONTROLLER FOR EXCAVATORS
Title (de)
STEUERSYSTEM FÜR EINEN BAGGER
Title (fr)
CIRCUIT DE COMMANDE D'EXCAVATEUR
Publication
Application
Priority
- JP 9602431 W 19960830
- JP 22371395 A 19950831
Abstract (en)
[origin: WO9708395A1] In order to improve the durability of a tooth edge of an excavator and thereby an excavation efficiency thereof as well, a penetration force control unit (70) controls a hydraulic winch HWD so that a detected penetration force attains a set level, whereby the speed of the excavator (10) is controlled. A descending speed control unit (50) is adapted to control the hydraulic winch HWD so that a detected descending speed attains a set level, whereby the speed of the excavator (10) is controlled. When a detected level of the descending speed exceeds a predetermined level during a control operation of the penetration force control unit (70), a selection unit (80) shifts the control operation to that by the descending speed control unit (50). The descending speed control unit (50) is adapted to control the descending speed by a proportional integration control operation, while the penetration force control unit (70) is adapted to control the penetration force by a proportional differentiation control operation.
IPC 1-7
IPC 8 full level
E02F 5/02 (2006.01); B66D 1/44 (2006.01); E02F 3/20 (2006.01); E02F 3/26 (2006.01); E02F 9/22 (2006.01)
CPC (source: EP KR)
E02F 3/205 (2013.01 - EP); E02F 3/26 (2013.01 - EP); E02F 5/02 (2013.01 - KR); E02F 5/14 (2013.01 - KR); E02F 9/2203 (2013.01 - EP)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 9708395 A1 19970306; CN 1070973 C 20010912; CN 1166191 A 19971126; DE 69621767 D1 20020718; DE 69621767 T2 20030130; EP 0790356 A1 19970820; EP 0790356 A4 19991222; EP 0790356 B1 20020612; JP 3068772 B2 20000724; JP H0967829 A 19970311; KR 100439892 B1 20041103; KR 970707352 A 19971201
DOCDB simple family (application)
JP 9602431 W 19960830; CN 96191257 A 19960830; DE 69621767 T 19960830; EP 96928698 A 19960830; JP 22371395 A 19950831; KR 19970702685 A 19970424