Transmission mechanism for base station antenna and base station antenna

A transmission mechanism for a base station antenna, wherein the transmission mechanism comprises:

• a worm gear unit, which is arranged on the first side of a reflector of the base station antenna and includes a worm driven by a motor and a worm gear meshed with the worm;
• a bevel gear pair unit, which is arranged on the second side of the reflection plate opposite to the first side and includes a first bevel gear and a second bevel gear meshed with each other, wherein the first bevel gear and the worm gear are coaxially installed on a first drive shaft;
• and
• at least one rack-and-pinion unit arranged on the second side of the reflection plate, wherein each rack-and-pinion unit includes a third gear and a rack element meshed with each other, all the third gears and the second bevel gears of the at least one rack-and-pinion unit are coaxially installed on a second drive shaft, and each rack element is fixed on the connecting rod of the phase shifter of the base station antenna for driving the connecting rod to move longitudinally;
• wherein the base station antenna includes a filter located at the first side of the reflection plate, and the motor and the worm gear unit are placed in the first space between the filter and the reflection plate;
• and
• wherein the longitudinal length of the first space is 60-80 mm and the height is 20-40 mm.

A transmission mechanism for a base station antenna, wherein the transmission mechanism comprises:

• a worm gear unit, which is arranged on the first side of a reflector of the base station antenna and includes a worm driven by a motor and a worm gear meshed with the worm;
• a bevel gear pair unit, which is arranged on the second side of the reflection plate opposite to the first side and includes a first bevel gear and a second bevel gear meshed with each other, wherein the first bevel gear and the worm gear are coaxially installed on a first drive shaft;
• and
• at least one rack-and-pinion unit arranged on the second side of the reflection plate, wherein each rack-and-pinion unit includes a third gear and a rack element meshed with each other, all the third gears and the second bevel gears of the at least one rack-and-pinion unit are coaxially installed on a second drive shaft, and each rack element is fixed on the connecting rod of the phase shifter of the base station antenna for driving the connecting rod to move longitudinally;
• wherein the base station antenna comprises a radome located at the second side of the reflection plate, and the bevel gear pair unit and the at least one rack-and-pinion unit are placed in the second space between the radome and the reflection plate;
• and
• wherein the height of the second space is 20-40 mm.