HYDRAULIC PRESSURE CONTROL DEVICE

WIPO Patent Application WO/2011/105027

A1

Disclosed is a hydraulic pressure control device provided with a hydraulic pump (32) which discharges hydraulic oil; hydraulic actuators (39); an operation device (17) which is operated for performing operational control; a discharge pressure sensor (37) which detects the discharge pressure of hydraulic oil discharged by the hydraulic pump (32); a hydraulic oil pressure sensor (38) which detects the hydraulic pressure of the hydraulic actuators; an electric motor (33) which drives the hydraulic pump; an inverter (43) which supplies electric power to the electric motor (33); and a controller (40) which calculates the difference between the discharge pressure detected by the discharge pressure sensor (37) and the hydraulic oil pressure detected by the hydraulic oil pressure sensor (38), and adjusts the amount of electric power supplied to the electric motor (33) so that the difference will take a specific value, thereby changing the discharge pressure of the hydraulic pump (32).

KUMEUCHI, Kengo (205, Uwadaira, Sakakimachi, Hanishina-gu, Nagano 05, 〒3890605, JP)
粂内　健吾 (〒05 長野県埴科郡坂城町上平２０５　株式会社竹内製作所内 Nagano, 〒3890605, JP)

JP2011/000865

September 01, 2011

February 17, 2011

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TAKEUCHI MFG. CO., LTD. (9347, Oaza Sakaki Sakakimachi, Hanishina-gu, Nagano 01, 〒3890601, JP)
株式会社竹内製作所 (〒01 長野県埴科郡坂城町大字坂城９３４７ Nagano, 〒3890601, JP)
KUMEUCHI, Kengo (205, Uwadaira, Sakakimachi, Hanishina-gu, Nagano 05, 〒3890605, JP)

F15B11/00; E02F9/20; E02F9/22

OHNISHI, Shogo (S.OHNISHI & ASSOCIATES, HIGASHI-IKEBUKURO SS BUILDING 1F 3-20-3, Higashi-Ikebukuro, Toshima-k, Tokyo 13, 〒1700013, JP)

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