Patent
Digital variable hydraulic transformer
TLDR
In this paper, a digital variable hydraulic transformer is proposed to control the output pressure and the output oil flow of a force-application hydraulic cylinder with different pressure regulating ranges and precision, and integration and machining are easy.Abstract:
The invention discloses a digital variable hydraulic transformer. According to the digital variable hydraulic transformer, two rod cavities of a force application hydraulic cylinder are connected withan oil pump and an oil tank through rotary oil distribution valves respectively, the output end of a piston rod of the other rod cavity in the force application hydraulic cylinder is connected with apiston rod set, an oil discharging hydraulic cylinder is mainly composed of a plurality of hydraulic cylinders with different piston areas, piston rods in all the hydraulic cylinders are connected inparallel to form the piston rod set, two rod cavities of each hydraulic cylinder are connected to two ports of each two-position two-way electromagnetic valve respectively, the electric control end of each two-position two-way electromagnetic valve is connected to a digital controller, the two rod cavities of each hydraulic cylinder are connected into the oil tank through oil suction one-way valves correspondingly, and the two rod cavities of each hydraulic cylinder are connected to the output end through oil discharging one-way valves correspondingly to output pressure oil. According to thedigital variable hydraulic transformer, the structure is relatively simple, the output pressure and the output oil flow can be adjusted, different pressure regulating ranges and precision are designedaccording to different working conditions, and integration and machining are easy.read more
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