Invention Grant
- Patent Title: Lifting system and lifting method for jib of an operating machine, and an operating machine thereof
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Application No.: US14006342Application Date: 2011-12-26
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Publication No.: US09638217B2Publication Date: 2017-05-02
- Inventor: Shuanglai Yang
- Applicant: Shuanglai Yang
- Agency: Hasse & Nesbitt LLC
- Agent Daniel F. Nesbitt
- Priority: CN201110067311 20110321; CN201110412723 20111212
- International Application: PCT/CN2011/084636 WO 20111226
- International Announcement: WO2012/126266 WO 20120927
- Main IPC: E02F9/22
- IPC: E02F9/22 ; F15B1/02 ; F15B13/02 ; B66C13/20 ; F15B21/14
Abstract:
A lifting system for a jib of an operating machine that includes an energy storage device having an energy storage cylinder and an accumulator, the energy storage cylinder having an upper chamber, a lower chamber, and an energy storage piston rod connected to the jib. The upper part of the accumulator is filled with gas, and the lower part of the accumulator is filled with hydraulic oil and communicates with the lower chamber of the energy storage cylinder. The lifting system also includes a hydraulic pump and a control cylinder for controlling the lifting of the jib, which comprises an upper chamber, a lower chamber, and a control piston rod connected to the jib.
Public/Granted literature
- US20140000250A1 LIFTING SYSTEM AND LIFTING METHOD FOR JIB OF AN OPERATING MACHINE, AND AN OPERATING MACHINE THEREOF Public/Granted day:2014-01-02
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