Electric actuator for actively adjusting main reflection face of large-size radio telescope

• Main Authors: JIANG YONGBIN, YU HONG, YE QIAN, JIN HUILIANG, LIU QINGHUI, ZHOU JUNYU
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2012
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention provides an electric actuator for actively adjusting a main reflection face of a large-size radio telescope. The electric actuator comprises a box body, a worm gear, a worm, an intelligent step motor, a screw nut, a ball screw, a cylinder guide sleeve, an upper guide sleeve, a supporting board, a supporting rod, a plastic bearing, a limiting stopper, a zero-position sensor, a screening box and an aviation socket, wherein the intelligent step motor is connected with the worm; the worm gear and the screw nut are fixed together; the ball screw is connected with the cylinder guide sleeve through a spline; the cylinder guide sleeve is fixedly arranged on the box body; the upper guide sleeve is fastened to and connected with the upper end of the ball screw; the supporting board is fixedly connected with the upper guide sleeve; the supporting rod is fixedly connected with the supporting board; the plastic bearing is sandwiched between the cylinder guide sleeve and the upper guide sleeve and is in inter