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A platform for research: civil engineering, architecture and urbanism
Excavating boom-slewing closed hydraulic system and control method
The invention discloses an excavating boom-slewing closed hydraulic system and a control method. In this system, a system controller is electrically connected with a motor, a motor brake solenoid valve, a signal processing device, a first valve group, a second valve group and a rotary motor brake solenoid valve; a sensor group is electrically connected with the signal processing device; the motoris connected with a bidirectional quantitative pump/motor through a coupling; the first valve group comprises four electro-hydraulic proportional directional valves; the second valve group comprises four electro-hydraulic proportional directional valves; a boom cylinder assembly comprises a relief valve, two one-way valves Valve, an electro-hydraulic proportional relief valve and a boom hydrauliccylinder; and a swing motor assembly comprises two relief valves, two one-way valves, a swing motor and a swing motor brake hydraulic cylinder. The excavating boom-slewing closed hydraulic system andthe control method can reduce the energy consumption of an excavator system, reduce emissions and realize high-performance flow control.
本发明公开了一种挖掘机动臂‑回转闭式液压系统及控制方法。该系统中系统控制器与电机、电机制动电磁阀、信号处理装置、第一阀组、第二阀组和回转马达制动电磁阀电连接；传感器组与信号处理装置电连接；电机通过联轴器与双向定量泵/马达连接；第一阀组包括四个电液比例方向阀；第二阀组包括四个电液比例方向阀；动臂缸组件包括一个溢流阀、两个单向阀、电液比例溢流阀和动臂液压缸；回转马达组件包括两个溢流阀、两个单向阀、回转马达和回转马达制动液压缸。本发明能够降低挖掘机系统能耗、减少排放并实现高性能的流量控制。
Excavating boom-slewing closed hydraulic system and control method
The invention discloses an excavating boom-slewing closed hydraulic system and a control method. In this system, a system controller is electrically connected with a motor, a motor brake solenoid valve, a signal processing device, a first valve group, a second valve group and a rotary motor brake solenoid valve; a sensor group is electrically connected with the signal processing device; the motoris connected with a bidirectional quantitative pump/motor through a coupling; the first valve group comprises four electro-hydraulic proportional directional valves; the second valve group comprises four electro-hydraulic proportional directional valves; a boom cylinder assembly comprises a relief valve, two one-way valves Valve, an electro-hydraulic proportional relief valve and a boom hydrauliccylinder; and a swing motor assembly comprises two relief valves, two one-way valves, a swing motor and a swing motor brake hydraulic cylinder. The excavating boom-slewing closed hydraulic system andthe control method can reduce the energy consumption of an excavator system, reduce emissions and realize high-performance flow control.
本发明公开了一种挖掘机动臂‑回转闭式液压系统及控制方法。该系统中系统控制器与电机、电机制动电磁阀、信号处理装置、第一阀组、第二阀组和回转马达制动电磁阀电连接；传感器组与信号处理装置电连接；电机通过联轴器与双向定量泵/马达连接；第一阀组包括四个电液比例方向阀；第二阀组包括四个电液比例方向阀；动臂缸组件包括一个溢流阀、两个单向阀、电液比例溢流阀和动臂液压缸；回转马达组件包括两个溢流阀、两个单向阀、回转马达和回转马达制动液压缸。本发明能够降低挖掘机系统能耗、减少排放并实现高性能的流量控制。
Excavating boom-slewing closed hydraulic system and control method
一种挖掘机动臂-回转闭式液压系统及控制方法
ZHANG LIJIE (author) / FU WENBO (author) / MENG ZHAOLIANG (author) / YUAN XIAOMING (author)
2020-07-10
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
SLEWING HYDRAULIC WORK MACHINE WITH SLEWING MOTOR CAPACITY CONTROL SECTION
| European Patent Office | 2022