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A platform for research: civil engineering, architecture and urbanism
Hydraulic circuit of option device for excavator
A hydraulic circuit of an option device for an excavator is disclosed, which can constantly supply hydraulic fluid to an option device (24), such as a breaker and so on, selectively mounted on the excavator, irrespective of the size of a load occurring when the option device operates, and control respective flow rates required for various kinds of option devices. The hydraulic circuit includes a variable hydraulic pump (26), an option device (24), a first spool (15) shifted to control hydraulic fluid fed to the option device (24), a poppet (14) and a piston (13), an option spool (25) shifted to control hydraulic fluid fed to the option device (24) via the first spool (15), a second spool (3) shifted to control hydraulic fluid fed to a back pressure chamber (17) of the poppet (14), and a control means (14-2) installed in the poppet (14) and controlling hydraulic fluid passing through an orifice (14a) of the poppet (14) when the piston (13) and the poppet (14) are pressed by the hydraulic fluid fed from the hydraulic pump (26), through the shifting of the second spool (3).
Hydraulic circuit of option device for excavator
A hydraulic circuit of an option device for an excavator is disclosed, which can constantly supply hydraulic fluid to an option device (24), such as a breaker and so on, selectively mounted on the excavator, irrespective of the size of a load occurring when the option device operates, and control respective flow rates required for various kinds of option devices. The hydraulic circuit includes a variable hydraulic pump (26), an option device (24), a first spool (15) shifted to control hydraulic fluid fed to the option device (24), a poppet (14) and a piston (13), an option spool (25) shifted to control hydraulic fluid fed to the option device (24) via the first spool (15), a second spool (3) shifted to control hydraulic fluid fed to a back pressure chamber (17) of the poppet (14), and a control means (14-2) installed in the poppet (14) and controlling hydraulic fluid passing through an orifice (14a) of the poppet (14) when the piston (13) and the poppet (14) are pressed by the hydraulic fluid fed from the hydraulic pump (26), through the shifting of the second spool (3).
Hydraulic circuit of option device for excavator
Hydraulische Schaltung einer Optionsvorrichtung für einen Bagger
Circuit hydraulique d'un dispositif d'option pour excavateur
JEON MAN SUK (author)
2017-01-25
Patent
Electronic Resource
English
Hydraulic pressure detection circuit, hydraulic system and excavator
| European Patent Office | 2023