| 摘要 |
FIELD: antenna engineering. SUBSTANCE: mobile antenna assembly has base suited to mounting on vehicle, front and rear jacks for leveling the antenna assembly, telescopic mast for antenna mounting, drive for setting mast in working or traveling position, and also mechanisms for locking mast in vertical position and for antenna turning; antenna assembly is provided with frame installed on base; telescopic mast is mounted on frame in traveling position and bottom section of mast is joined through pin with base; top section of mast mounts additional turning frame and the latter has flange which is free to turn relative to this additional frame; flange carries ring which is free to turn and mounts ring designed for antenna fixation. Rear jacks may be mounted on rocking beam. Mast draw-out drive is made in the form of cable kinematically coupled with geared motor. Mechanism used for locking mast in vertical position is made in the form of wedges kinematically coupled with their displacement drives for setting between base and bottom bevel of mast. Mast sections are locked when in draw- out position. EFFECT: enhanced speed and precision of antenna setting in desired position. 10 cl, 10 dwg
|
