Invention Grant
- Patent Title: Hydraulic system and a method for moving an implement of a working machine
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Application No.: US15750851Application Date: 2015-08-19
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Publication No.: US10655297B2Publication Date: 2020-05-19
- Inventor: Patrik Stener , Johan Lillemets
- Applicant: VOLVO CONSTRUCTION EQUIPMENT AB
- Applicant Address: SE Eskilstuna
- Assignee: Volvo Construction Equipment AB
- Current Assignee: Volvo Construction Equipment AB
- Current Assignee Address: SE Eskilstuna
- Agency: Sage Patent Group
- International Application: PCT/SE2015/050881 WO 20150819
- International Announcement: WO2017/030476 WO 20170223
- Main IPC: E02F3/42
- IPC: E02F3/42 ; E02F9/20 ; F15B11/17 ; F15B1/02 ; E02F9/22 ; E02F3/28

Abstract:
A hydraulic system for moving an implement of a working machine includes a hydraulic cylinder with a cylinder and a piston which is adapted to move in the cylinder to thereby move the implement relative to a body structure of the working machine, and an actuator pump arranged to provide hydraulic fluid to the hydraulic cylinder, the hydraulic cylinder having a first port and a second port adapted to be in fluid communication with the actuator pump, the hydraulic cylinder and the actuator pump being arranged so that the hydraulic cylinder is directly controlled by the actuator pump so that the rate of movement of the piston of the hydraulic cylinder is purely pump controlled, the hydraulic system further including a hydraulic accumulator for suspension of the implement, which hydraulic accumulator is arranged to be selectively connectable to the first port, the hydraulic system further including a further pump in addition to the actuator pump, the hydraulic accumulator being arranged to be pressurised by the further pump.
Public/Granted literature
- US20180230669A1 A HYDRAULIC SYSTEM AND A METHOD FOR MOVING AN IMPLEMENT OF A WORKING MACHINE Public/Granted day:2018-08-16
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