A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WHEEL-TYPE WORK MACHINE WITH A HYDRAULIC DRIVE SYSTEM
A hydraulic drive system is provided for a wheeled working machine such that, when making a hill start, the wheeled working machine is allowed to start without rolling down a hill road. The hydraulic drive system is provided with a selector switch (26) capable of selecting a work brake mode which is a temporary stop mode for a travel base (3) to be performed upon conducting work by working equipment (5), a proportional solenoid valve (27) capable of controlling a braking directional control valve (25), and a controller (28) capable of outputting a brake actuation signal (S1) or brake release signal (S2) to the proportional solenoid valve (27) responsive to a signal outputted from a brake control amount-determining pressure sensor (24). The controller (28) includes a delay means for introducing a time delay into the brake release signal (S2) responsive to a signal outputted from a travel control amount-determining pressure sensor (18), and performs processing such that the brake release signal (S2) as delayed by the delay means is outputted to the proportional solenoid valve (27).
WHEEL-TYPE WORK MACHINE WITH A HYDRAULIC DRIVE SYSTEM
A hydraulic drive system is provided for a wheeled working machine such that, when making a hill start, the wheeled working machine is allowed to start without rolling down a hill road. The hydraulic drive system is provided with a selector switch (26) capable of selecting a work brake mode which is a temporary stop mode for a travel base (3) to be performed upon conducting work by working equipment (5), a proportional solenoid valve (27) capable of controlling a braking directional control valve (25), and a controller (28) capable of outputting a brake actuation signal (S1) or brake release signal (S2) to the proportional solenoid valve (27) responsive to a signal outputted from a brake control amount-determining pressure sensor (24). The controller (28) includes a delay means for introducing a time delay into the brake release signal (S2) responsive to a signal outputted from a travel control amount-determining pressure sensor (18), and performs processing such that the brake release signal (S2) as delayed by the delay means is outputted to the proportional solenoid valve (27).
WHEEL-TYPE WORK MACHINE WITH A HYDRAULIC DRIVE SYSTEM
ARBEITSMASCHINE MIT RÄDERN MIT EINEM HYDRAULISCHEN ANTRIEBSSYSTEM
MACHINE DE CHANTIER DU TYPE SUR ROUES AVEC UN SYSTÈME D'ENTRAÎNEMENT HYDRAULIQUE
KAYANE MASAHIRO (author) / KODAKA KATSUAKI (author)
2020-01-01
Patent
Electronic Resource
English
IPC:
B60T
Bremsanlagen für Fahrzeuge oder Teile davon
,
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF
/
B60W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION
,
Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion
/
E02F
Baggern
,
DREDGING