A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydraulic circuit for work vehicle
A hydraulic circuit (100) is provided with: a first actuator (11); a second actuator (12); a hydraulic pump (13); a first direction switching valve (15); a second direction switching valve (16); a pilot pump (14); a first operation device (17); a second operation device (18); an electromagnetic pressure reduction valve (19) that controls the primary pressure of pilot hydraulic oil supplied to the second operation device (18); and an ECU (10). The ECU (10) issues, to the electromagnetic pressure reduction valve (19), a first command for lowering the primary pressure from a reference pressure to a first command pressure and holds the primary pressure while the first operation device (17) is operated, and issues, to the electromagnetic pressure reduction valve (19), a second command for gradually increasing the primary pressure from the first command pressure to a second command pressure when the second operation device (18) is operated from the state where the first operation device (17) is operated.
Hydraulic circuit for work vehicle
A hydraulic circuit (100) is provided with: a first actuator (11); a second actuator (12); a hydraulic pump (13); a first direction switching valve (15); a second direction switching valve (16); a pilot pump (14); a first operation device (17); a second operation device (18); an electromagnetic pressure reduction valve (19) that controls the primary pressure of pilot hydraulic oil supplied to the second operation device (18); and an ECU (10). The ECU (10) issues, to the electromagnetic pressure reduction valve (19), a first command for lowering the primary pressure from a reference pressure to a first command pressure and holds the primary pressure while the first operation device (17) is operated, and issues, to the electromagnetic pressure reduction valve (19), a second command for gradually increasing the primary pressure from the first command pressure to a second command pressure when the second operation device (18) is operated from the state where the first operation device (17) is operated.
Hydraulic circuit for work vehicle
MATSUYAMA HIROSHI (author) / SHIROUZU TAKAYUKI (author) / AOYAMA KAZUHIRO (author) / FUJIHARA TAKURO (author)
2020-10-08
Patent
Electronic Resource
English
| European Patent Office | 2020