Balanced high-pressure large-current AC (Alternating Current) servo direct-driven cartridge valve
A technology of AC servo and AC servo motor, applied in the field of hydraulic valves, can solve the problems of increasing the cost of electro-hydraulic servo systems, high oil purity requirements, sensitive oil pollution, etc., achieve good repeat positioning accuracy, overcome difficulties in use, Use simple effects
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[0025] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0026] refer to figure 1 , a balanced high-pressure and large-flow AC servo direct-drive cartridge valve, including an AC servo motor 1, the AC servo motor 1 and a harmonic reducer 3 are connected to the valve sleeve 8 by bolts, and the output shaft of the AC servo motor 1 is in harmony with the harmonic The input shaft of the wave reducer 3 is connected, and the output shaft of the harmonic reducer 3 is connected with the lead screw 6 through the coupling 4. The lead screw 6 is provided with a slider 15, and the rotation of the lead screw 6 drives the slider 15 to perform linear motion. , the slider 15 is connected with a linear displacement sensor 5, which can directly respond to the displacement of the slider 15. The slider 15 is connected to the valve stem 11 through a bolt connection. The end of the valve stem 11 has an external thread, and the valve core 13 has...
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