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3.1.2.3 Driving Device
The driving device consists of the elevation driving device and azimuth driving device. The
driving device composition block diagram is shown in Fig.3.1-9. The azimuth and elevation
driving devices are lead screw type. The decelerator of driving device adopts SG-71 type
plane secondary envelope worm pair. The decelerator adopts cycloid pin wheel decelerator and
planetary gear decelerator.
Fig.3.1-9 Driving Device Composition Block Diagram
AC motor: select and use double-speed AC motor, the type number is YD160L-16/4H
(horizontal type), it is the sealed type three-proof motor, normal power is 2KW/8KW; rotating
speed is 361r/min/1460r/min, the azimuth and elevation motor are same.
Elevation decelerator: planetary gear decelerator, the type number is NGW11-9 (horizontal
type), deceleration ratio: i=7.1.
Azimuth decelerator: cycloid pin wheel decelerator, the type number is XW5.5-5-1/9,
deceleration ratio: i=9.
Worm gear-worm pair: SG-71-type plane secondary enveloping surface torus worm pair, the
worm is single-head type, deceleration ratio: i =40, the azimuth and elevation worm gear-
worm pairs are same.
Lead screw-nut pair: the screw thread parameter is Tr150X14, the azimuth and elevation lead
screw- nut pairs are same.
The final stage of driving chain is lead screw-nut pair, which has self-locking capability. The
antenna can apply the brake safely at any position and at the same time the nut pair use double
nuts for backlash elimination.
3.1.2.4 Synchronization Device
The azimuth and elevation synchronization devices are respectively installed on the azimuth
and elevation axle heads, the corners of axis is transformed into the electrical signals and
output to obtain the position information of antenna.
