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Power compensation hydraulic system, control method and hydraulic excavator
According to the technical scheme, a power compensation pump and an energy accumulator are additionally arranged in the hydraulic system of the excavator, in the low-pressure operation stage of the excavator, the power compensation pump injects hydraulic oil into the energy accumulator, and in the excavation stage, under the high-pressure condition, the power compensation pump injects the hydraulic oil into the energy accumulator. The energy accumulator injects hydraulic oil into a large cavity of a bucket rod oil cylinder to compensate the power of a high-pressure area and increase the bucket rod excavation speed. The method has the characteristics of power compensation and high excavation efficiency.
本发明公开了一种功率补偿液压系统、控制方法及液压挖掘机，其技术方案是在挖掘机液压系统内增加功率补偿泵和蓄能器，在挖掘机低压操作阶段，功率补偿泵将液压油注入蓄能器，在挖掘阶段，在高压情况下，蓄能器将液压油注入斗杆油缸大腔，补偿高压区功率，提升斗杆挖掘速度。本发明具有功率补偿、挖掘效率高的特点。
Power compensation hydraulic system, control method and hydraulic excavator
According to the technical scheme, a power compensation pump and an energy accumulator are additionally arranged in the hydraulic system of the excavator, in the low-pressure operation stage of the excavator, the power compensation pump injects hydraulic oil into the energy accumulator, and in the excavation stage, under the high-pressure condition, the power compensation pump injects the hydraulic oil into the energy accumulator. The energy accumulator injects hydraulic oil into a large cavity of a bucket rod oil cylinder to compensate the power of a high-pressure area and increase the bucket rod excavation speed. The method has the characteristics of power compensation and high excavation efficiency.
本发明公开了一种功率补偿液压系统、控制方法及液压挖掘机，其技术方案是在挖掘机液压系统内增加功率补偿泵和蓄能器，在挖掘机低压操作阶段，功率补偿泵将液压油注入蓄能器，在挖掘阶段，在高压情况下，蓄能器将液压油注入斗杆油缸大腔，补偿高压区功率，提升斗杆挖掘速度。本发明具有功率补偿、挖掘效率高的特点。
Power compensation hydraulic system, control method and hydraulic excavator
一种功率补偿液压系统、控制方法及液压挖掘机
ZHAO ZHENFEI (author) / DING YUEJIN (author) / YANG XINMING (author) / ZHANG YI (author) / ZHANG JIAKUI (author) / LU XIANGYONG (author) / XU HAIDONG (author) / LU MAOMAO (author)
2024-01-23
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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