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A platform for research: civil engineering, architecture and urbanism
Movable arm floating hydraulic system for excavator
A movable arm floating hydraulic system for an excavator comprises a pilot pump, the pilot pump is connected with a movable arm floating pilot electromagnetic valve, the movable arm floating pilot electromagnetic valve is connected with a movable arm oil return switching valve, the movable arm floating pilot electromagnetic valve is connected to the hydraulic control end of the movable arm oil return switching valve, and one side of the movable arm oil return switching valve is connected with a movable arm oil cylinder. The other side of the movable arm oil return switching valve is connected with a main valve and a damping valve set, and the damping valve set is connected with an energy accumulator. According to the movable arm floating hydraulic system for the excavator, when oil enters a rodless cavity of the oil cylinder of the movable arm and oil returns from a rod cavity, hydraulic oil between the oil cylinder and the energy accumulator flows through a one-way valve in the damping valve, the flow speed is normal, the movable arm normally floats and lifts along with the ground protrusion, and on the contrary, when oil enters the rod cavity of the movable arm and oil returns from the rodless cavity of the movable arm, the flow speed is normal. Hydraulic oil between the oil cylinder and the energy accumulator flows through the throttling valve in the damping valve, the flow speed is reduced, the movable arm slowly floats and descends along with the sunken ground, impact of loads on the root of the movable arm is reduced, and structural parts are protected against impact loads.
一种挖掘机用动臂浮动液压系统，包括先导泵，先导泵连接有动臂浮动先导电磁阀，动臂浮动先导电磁阀连接有动臂回油切换阀，动臂浮动先导电磁阀连接在动臂回油切换阀的液控端，动臂回油切换阀的一侧连接动臂油缸，动臂回油切换阀的另一侧连接有主阀和减震阀组，减震阀组连接有蓄能器。本发明的挖掘机用动臂浮动液压系统，当动臂油缸无杆腔进油、有杆腔回油时，油缸与蓄能器之间液压油流经减震阀中的单向阀，流速正常，使动臂随地面凸起正常浮动抬升，反之，当动臂有杆腔进油、无杆杆腔回油时，油缸与蓄能器之间液压油流经减震阀中的节流阀，降低流速，使动臂随地面凹陷缓慢浮动下降，减少负载对动臂根部的冲击，保护结构件避免承受冲击载荷。
Movable arm floating hydraulic system for excavator
A movable arm floating hydraulic system for an excavator comprises a pilot pump, the pilot pump is connected with a movable arm floating pilot electromagnetic valve, the movable arm floating pilot electromagnetic valve is connected with a movable arm oil return switching valve, the movable arm floating pilot electromagnetic valve is connected to the hydraulic control end of the movable arm oil return switching valve, and one side of the movable arm oil return switching valve is connected with a movable arm oil cylinder. The other side of the movable arm oil return switching valve is connected with a main valve and a damping valve set, and the damping valve set is connected with an energy accumulator. According to the movable arm floating hydraulic system for the excavator, when oil enters a rodless cavity of the oil cylinder of the movable arm and oil returns from a rod cavity, hydraulic oil between the oil cylinder and the energy accumulator flows through a one-way valve in the damping valve, the flow speed is normal, the movable arm normally floats and lifts along with the ground protrusion, and on the contrary, when oil enters the rod cavity of the movable arm and oil returns from the rodless cavity of the movable arm, the flow speed is normal. Hydraulic oil between the oil cylinder and the energy accumulator flows through the throttling valve in the damping valve, the flow speed is reduced, the movable arm slowly floats and descends along with the sunken ground, impact of loads on the root of the movable arm is reduced, and structural parts are protected against impact loads.
一种挖掘机用动臂浮动液压系统，包括先导泵，先导泵连接有动臂浮动先导电磁阀，动臂浮动先导电磁阀连接有动臂回油切换阀，动臂浮动先导电磁阀连接在动臂回油切换阀的液控端，动臂回油切换阀的一侧连接动臂油缸，动臂回油切换阀的另一侧连接有主阀和减震阀组，减震阀组连接有蓄能器。本发明的挖掘机用动臂浮动液压系统，当动臂油缸无杆腔进油、有杆腔回油时，油缸与蓄能器之间液压油流经减震阀中的单向阀，流速正常，使动臂随地面凸起正常浮动抬升，反之，当动臂有杆腔进油、无杆杆腔回油时，油缸与蓄能器之间液压油流经减震阀中的节流阀，降低流速，使动臂随地面凹陷缓慢浮动下降，减少负载对动臂根部的冲击，保护结构件避免承受冲击载荷。
Movable arm floating hydraulic system for excavator
一种挖掘机用动臂浮动液压系统
GU XIANG (author) / ZHAO YANPING (author) / XU SAISAI (author) / ZHANG BINBIN (author) / HAN DONGYA (author)
2024-07-30
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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