Antenna electrical downtilt adjustingtransmission deivce

The invention discloses antenna electrical downtilt adjusting transmission deivce , which is characterized in that the transmission device comprises a selective transmission assembly connected with anelectric regulating controller, a screw transmission assembly, a pull rod, and a screw transmission assembly connected with a phase shifter through the pull rod; the screw transmission assembly comprises a plurality of transmission screws and a transmission screw gear arranged on the transmission screw; The selective transmission assembly comprises a connecting shaft sleeve, a front housing, a selective internal gear, a selective component, a positioning sensor, a fixing ring, a damping block, a transmission screw and a rear housing. The selective part is provided with an input shaft and a gear transmission mechanism, an electric regulating controller is connected with the input shaft through a connecting shaft sleeve, the selective internal gear is arranged on the input shaft and is connected with the gear trans