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A LOAD SENSING HYDRAULIC SYSTEM FOR A WORKING MACHINE, AND A METHOD FOR CONTROLLING A LOAD SENSING HYDRAULIC SYSTEM
The invention relates to a hydraulic system (12) for a working machine (1). The hydraulic system (12) is a load sensing (LS) system and comprises a hydraulic actuator (18) for movement of an implement and a control valve (15) having an inlet valve (16a, 16b) and an outlet valve (17a, 17b) for controlling the flow of hydraulic fluid from a pump (13) to the hydraulic actuator (18) and for draining hydraulic fluid from the hydraulic actuator (18), respectively. The hydraulic system also comprises a means (44) for determining the load (19) on the hydraulic actuator (18). The hydraulic system (12) further comprises a valve (24) for disconnecting the flow of hydraulic fluid from the pump (13) to the hydraulic actuator (18), while allowing another flow of hydraulic fluid to the hydraulic actuator (18), provided that the determined load on the hydraulic actuator (18) exceeds a threshold value.
A LOAD SENSING HYDRAULIC SYSTEM FOR A WORKING MACHINE, AND A METHOD FOR CONTROLLING A LOAD SENSING HYDRAULIC SYSTEM
The invention relates to a hydraulic system (12) for a working machine (1). The hydraulic system (12) is a load sensing (LS) system and comprises a hydraulic actuator (18) for movement of an implement and a control valve (15) having an inlet valve (16a, 16b) and an outlet valve (17a, 17b) for controlling the flow of hydraulic fluid from a pump (13) to the hydraulic actuator (18) and for draining hydraulic fluid from the hydraulic actuator (18), respectively. The hydraulic system also comprises a means (44) for determining the load (19) on the hydraulic actuator (18). The hydraulic system (12) further comprises a valve (24) for disconnecting the flow of hydraulic fluid from the pump (13) to the hydraulic actuator (18), while allowing another flow of hydraulic fluid to the hydraulic actuator (18), provided that the determined load on the hydraulic actuator (18) exceeds a threshold value.
A LOAD SENSING HYDRAULIC SYSTEM FOR A WORKING MACHINE, AND A METHOD FOR CONTROLLING A LOAD SENSING HYDRAULIC SYSTEM
LASTERFASSENDES HYDRAULIKSYSTEM FÜR EINE ARBEITSMASCHINE UND VERFAHREN ZUR STEUERUNG EINES LASTERFASSENDEN HYDRAULIKSYSTEMS
SYSTÈME HYDRAULIQUE DE DÉTECTION DE CHARGE POUR ENGIN DE CHANTIER, ET PROCÉDÉ DE COMMANDE DE SYSTÈME HYDRAULIQUE DE DÉTECTION DE CHARGE
VIGHOLM BO (author)
2020-10-21
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
/
B66F
HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
,
Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
| European Patent Office | 2020
| European Patent Office | 2016
| European Patent Office | 2018