An Excavator Hydraulic Swing Energy Saving System
A rotary energy-saving, excavator technology, applied in the direction of earth mover/shovel, construction, etc., can solve the problems of complex system, high cost, low battery or super capacitor life, etc., to achieve high recovery efficiency, low cost, elimination of The effect of hydraulic noise
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[0035] Such as image 3 shown. The excavator hydraulic rotary energy-saving system of the present invention includes a main control reversing valve 4, an overload oil supply valve group, a hydraulic motor 1, a pilot control valve group, and a fuel tank 13;
[0036] The overload oil supply valve group is composed of a first one-way valve group and an overload valve group, the first one-way valve group includes two one-way valves 2, and the overload valve group includes two overload valves 3;
[0037] The pilot control valve group includes two pilot valves 5;
[0038] The inlets of the two one-way valves 2 of the first one-way valve group are connected together with the outlets of the two overload valves 3, and then connected with the oil tank 13, and the outlets of the two one-way valves of the first one-way valve group The oil ports are respectively connected to the inlet and outlet main oil passages of the hydraulic motor 1; the oil inlets of the two overload valves 3 are r...
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