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Engineering machinery swing arm energy-saving drive system
The invention discloses an engineering machinery swing arm energy-saving drive system. The system comprises a power unit, a hydraulic pump, a first overflow valve, a three-way proportional velocity regulating valve, a two-way proportional velocity regulating valve, a three-position four-way reversing valve, a second overflow valve, a third overflow valve, a first one-way valve, a second one-way valve, a drive oil cylinder, a first balance oil cylinder, a second balance oil cylinder, a first two-position three-way reversing valve, a second two-position three-way reversing valve, a first two-position two-way reversing valve, a second two-position two-way reversing valve, a third two-position two-way reversing valve, a fourth two-position two-way reversing valve, a hydraulic accumulator, a fourth overflow valve, a swing arm, a first pressure sensor, a second pressure sensor and a controller. According to the engineering machinery swing arm energy-saving drive system, the defect that the pressure change of the hydraulic accumulator has an influence on the speed of the swing arm in a system where the hydraulic accumulator is directly connected with the drive oil cylinder is overcome, and meanwhile, two-level control of rod-omitted cavity areas of the balance oil cylinders is achieved through the switch between the multiple balance oil cylinders.
Engineering machinery swing arm energy-saving drive system
The invention discloses an engineering machinery swing arm energy-saving drive system. The system comprises a power unit, a hydraulic pump, a first overflow valve, a three-way proportional velocity regulating valve, a two-way proportional velocity regulating valve, a three-position four-way reversing valve, a second overflow valve, a third overflow valve, a first one-way valve, a second one-way valve, a drive oil cylinder, a first balance oil cylinder, a second balance oil cylinder, a first two-position three-way reversing valve, a second two-position three-way reversing valve, a first two-position two-way reversing valve, a second two-position two-way reversing valve, a third two-position two-way reversing valve, a fourth two-position two-way reversing valve, a hydraulic accumulator, a fourth overflow valve, a swing arm, a first pressure sensor, a second pressure sensor and a controller. According to the engineering machinery swing arm energy-saving drive system, the defect that the pressure change of the hydraulic accumulator has an influence on the speed of the swing arm in a system where the hydraulic accumulator is directly connected with the drive oil cylinder is overcome, and meanwhile, two-level control of rod-omitted cavity areas of the balance oil cylinders is achieved through the switch between the multiple balance oil cylinders.
Engineering machinery swing arm energy-saving drive system
LIN TIANLIANG (author) / YE YUEYING (author) / HUANG WEIPING (author) / REN HAOLING (author) / FU SHENGJIE (author) / LIU QIANG (author) / YANG FAN (author) / MIAO CHENG (author)
2015-06-24
Patent
Electronic Resource
English
IPC:
E02F
Baggern
,
DREDGING
| Wiley | 2003
| Wiley | 2003
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