Mounting device for base station antenna and base station antenna system

A mounting device adapted for mounting a base station antenna to a mounting structure, the mounting device comprising:

• a clamping device configured to be fastened to the mounting structure;
• an adjustable movable component comprising a first arm and a second arm, the first arm connected to the clamping device via a support member, and the second arm configured to be connected to the base station antenna;
• a self-locking worm drive coupled to the support member and the adjustable movable component;
• and
• a gear integrally formed with an edge of the first arm of the adjustable movable component and engaged with the self-locking worm drive,
• wherein the first arm of the adjustable movable component is configured to rotate about a first pivot, the first and second arms of the adjustable movable component are configured to rotate relative to each other about a second pivot, the second arm of the adjustable movable component is configured to rotate about a third pivot, and a distance between the first pivot and the third pivot is related to a mechanical tilt of the base station antenna,
• wherein the first arm has first holes evenly distributed around the second pivot, the second arm has second holes evenly distributed around the second pivot, and a hole pair of one of the first holes and one of the second holes is configured to receive a plug to maintain the mechanical tilt, and
• wherein, by actuating the self-locking worm drive, the spiral gear is configured to move relative to the self-locking worm drive to rotate the first arm about the first pivot, thereby adjusting the distance between the first pivot and the third pivot, and thus, the mechanical tilt of the base station antenna.