Invention Grant
- Patent Title: System, working machine comprising the system, and method of springing an implement of a working machine during transport
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Application No.: US12741421Application Date: 2007-11-21
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Publication No.: US09932721B2Publication Date: 2018-04-03
- Inventor: Bo Vigholm , Andreas Ekvall
- Applicant: Bo Vigholm , Andreas Ekvall
- Applicant Address: SE Eskilstuna
- Assignee: Volvo Construction Equipment AB
- Current Assignee: Volvo Construction Equipment AB
- Current Assignee Address: SE Eskilstuna
- Agency: WRB-IP LLP
- International Application: PCT/SE2007/001030 WO 20071121
- International Announcement: WO2009/067052 WO 20090528
- Main IPC: E02F9/22
- IPC: E02F9/22 ; E02F9/26

Abstract:
A system for a working machine is adapted for springing the movement of a load during transport and includes at least one hydraulic cylinder for operating the load, an accumulator, and a valve adapted to control a flow communication between the hydraulic cylinder and the accumulator. The system includes a first control valve arranged on a conduit connecting to the piston side of the hydraulic cylinder, a second control valve arranged on a conduit connecting to the piston rod side of the hydraulic cylinder, a first pressure sensor for detecting a load pressure of the hydraulic cylinder, a second pressure sensor for detecting a charge pressure of the accumulator, and a control unit adapted to receive signals with information about the pressures detected by the pressure sensors and to generate control signals corresponding to the detected pressures for controlling the springing function.
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