A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Excavator telescopic arm hydraulic control system, excavator and control method thereof
The invention relates to the technical field of excavators, in particular to an excavator telescopic arm hydraulic control system, an excavator and a control method of the excavator. A central bypass valve in a main valve of the hydraulic control system for the telescopic arm of the excavator is closed, so that a first main pump and a second main pump jointly supply oil to the lifting or descending motion of the telescopic arm to form a confluence oil way; a telescopic arm in the main valve is communicated with a piston rod cavity and a piston-rod-free cavity of the telescopic arm oil cylinder to form a regeneration oil way for driving the telescopic arm to descend; the regeneration oil way and the confluence oil way are both communicated to form a rapid descending mode, and the regeneration oil way and the confluence oil way are both disconnected to form a safe descending mode. According to the regeneration function, gravitational potential energy of the telescopic arm is fully utilized, the purposes of saving energy and increasing the descending speed of the telescopic arm are achieved, the speed and working efficiency of the ascending and descending movement of the telescopic arm can be further improved through the confluence state, and an auxiliary tool and materials can be protected through switching of the two movement modes of rapid descending and safe descending.
本发明涉及挖掘机技术领域，尤其是涉及一种挖掘机伸缩臂液压控制系统、挖掘机及其控制方法。挖掘机伸缩臂液压控制系统的主阀内的中央旁通阀关闭使得第一主泵和第二主泵共同为伸缩臂的提升或下降运动供油以形成合流油路；节流件、主阀内的伸缩臂联与伸缩臂油缸的活塞杆腔和无活塞杆腔连通以形成为驱动伸缩臂下降运动的再生油路；再生油路和合流油路均连通以形成快速下降模式，再生油路和合流油路均断开以形成安全下降模式。本发明的再生功能充分利用伸缩臂的重力势能，达到节能和提升伸缩臂下降速度的目的，合流状态能够进一步提升伸缩臂提升和下降运动的速度和工作效率，快速下降和安全下降两种运动模式的切换能够对辅具和物料形成保护。
Excavator telescopic arm hydraulic control system, excavator and control method thereof
The invention relates to the technical field of excavators, in particular to an excavator telescopic arm hydraulic control system, an excavator and a control method of the excavator. A central bypass valve in a main valve of the hydraulic control system for the telescopic arm of the excavator is closed, so that a first main pump and a second main pump jointly supply oil to the lifting or descending motion of the telescopic arm to form a confluence oil way; a telescopic arm in the main valve is communicated with a piston rod cavity and a piston-rod-free cavity of the telescopic arm oil cylinder to form a regeneration oil way for driving the telescopic arm to descend; the regeneration oil way and the confluence oil way are both communicated to form a rapid descending mode, and the regeneration oil way and the confluence oil way are both disconnected to form a safe descending mode. According to the regeneration function, gravitational potential energy of the telescopic arm is fully utilized, the purposes of saving energy and increasing the descending speed of the telescopic arm are achieved, the speed and working efficiency of the ascending and descending movement of the telescopic arm can be further improved through the confluence state, and an auxiliary tool and materials can be protected through switching of the two movement modes of rapid descending and safe descending.
本发明涉及挖掘机技术领域，尤其是涉及一种挖掘机伸缩臂液压控制系统、挖掘机及其控制方法。挖掘机伸缩臂液压控制系统的主阀内的中央旁通阀关闭使得第一主泵和第二主泵共同为伸缩臂的提升或下降运动供油以形成合流油路；节流件、主阀内的伸缩臂联与伸缩臂油缸的活塞杆腔和无活塞杆腔连通以形成为驱动伸缩臂下降运动的再生油路；再生油路和合流油路均连通以形成快速下降模式，再生油路和合流油路均断开以形成安全下降模式。本发明的再生功能充分利用伸缩臂的重力势能，达到节能和提升伸缩臂下降速度的目的，合流状态能够进一步提升伸缩臂提升和下降运动的速度和工作效率，快速下降和安全下降两种运动模式的切换能够对辅具和物料形成保护。
Excavator telescopic arm hydraulic control system, excavator and control method thereof
挖掘机伸缩臂液压控制系统、挖掘机及其控制方法
LI QIANG (author) / MIAO GUOHUA (author) / SHEN PEIGANG (author)
2023-12-26
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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