A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC PRESSURE CONTROL DEVICE FOR A CONSTRUCTION MACHINE
A fluid pressure control device (100) for a construction machine includes a first circuit system (10) connected to the first pump (P1); a second circuit system (20) connected to the second pump (P2); a switching valve (25) having a normal position (A), a straight traveling position (B) and a merging position (C) where the working fluid of the branch section (13a) is merged into the second neutral passage (21); and an open/close mechanism (14) configured to open/close the first neutral passage (11). In a case where at least one of the control valves (222, 223, 224), on which merging is required, on the downstream of the second traveling control valve (221) is switched to a position other than the neutral position, by closing the first neutral passage (11) by the open/close mechanism (14) and switching the switching valve (25) to the merging position (C), the working fluid of the first pump (P1) is merged into the working fluid of the second pump (P2).
HYDRAULIC PRESSURE CONTROL DEVICE FOR A CONSTRUCTION MACHINE
A fluid pressure control device (100) for a construction machine includes a first circuit system (10) connected to the first pump (P1); a second circuit system (20) connected to the second pump (P2); a switching valve (25) having a normal position (A), a straight traveling position (B) and a merging position (C) where the working fluid of the branch section (13a) is merged into the second neutral passage (21); and an open/close mechanism (14) configured to open/close the first neutral passage (11). In a case where at least one of the control valves (222, 223, 224), on which merging is required, on the downstream of the second traveling control valve (221) is switched to a position other than the neutral position, by closing the first neutral passage (11) by the open/close mechanism (14) and switching the switching valve (25) to the merging position (C), the working fluid of the first pump (P1) is merged into the working fluid of the second pump (P2).
HYDRAULIC PRESSURE CONTROL DEVICE FOR A CONSTRUCTION MACHINE
HYDRAULISCHE DRUCKSTEUERUNGSVORRICHTUNG FÜR EINE BAUMASCHINE
DISPOSITIF DE COMMANDE DE PRESSION HYDRAULIQUE POUR UN ENGIN DE CHANTIER
FUKUDA SHUNSUKE (author) / YOSHIDA NOBUYOSHI (author)
2019-02-20
Patent
Electronic Resource
English
HYDRAULIC PRESSURE CONTROL DEVICE FOR CONSTRUCTION MACHINE
| European Patent Office | 2016
HYDRAULIC PRESSURE CONTROL CIRCUIT OF CONSTRUCTION MACHINE
| European Patent Office | 2020
HYDRAULIC PRESSURE CONTROL SYSTEM AND CONSTRUCTION MACHINE
| European Patent Office | 2016
HYDRAULIC PRESSURE CONTROL CIRCUIT OF CONSTRUCTION MACHINE
| European Patent Office | 2020