2 results about "Umbrella antenna" patented technology

The application discloses a cutting method for a deployable umbrella antenna metal net, which comprises the following steps: step 1, setting parameters of the deployable umbrella antenna; step 2, establishing a relationship between corresponding position points with the same height for two antenna ribs of each sector of the deployable umbrella antenna; step 3, defining an arc length between two points with the same height on the metal net boundary of each sector of the umbrella antenna, namely defining the width of the metal net at the corresponding position; step 4, calculating the width of the metal net at different height positions of each sector of the deployable umbrella antenna, namely obtaining the width of each height position during the cutting of the metal net; step 5, according to the symmetry of the umbrella antenna, the cutting of the remaining sectors is the same as the cutting method of the obtained sector; and step 6, cutting the metal net corresponding to each sector according to the cutting size of the metal net corresponding to each sector. The method has high calculation precision, the boundary cutting is accurate, and the metal net cutting process is basically waste-free.

The utility model provides a locking device for a lodging umbrella-shaped antenna on a semitrailer platform, which comprises a mounting bracket, a sliding sleeve assembly, a movable top shaft, a deflector rod, a lead screw and nut assembly, a connecting seat and a top plate, the whole mounting bracket is of a frame type structure, the bottom of the mounting bracket is fixed with a semitrailer gooseneck platform, and the top of the mounting bracket is provided with an annular frame. The lead screw and nut assembly installed on one side of the installation support drives the shifting rod connected with the first lead screw and the movable top shaft to move, so that the top plate reliably presses the front end face of the umbrella-shaped antenna, and the situation that the face of the umbrella-shaped antenna in a lodging state is deformed and damaged due to bumping of a vehicle in the transportation process, and the precision and the normal use function of the antenna are affected is avoided. When the antenna locking device is used, only a nut in the lead screw and nut assembly needs to be rotated, the nut moves to drive the connecting base and the movable top shaft connected with the connecting base to move, the movable top shaft abuts against the top plate fixedly connected with the movable top shaft to move, the top plate body tightly abuts against the front end face of the umbrella-shaped antenna, antenna locking is achieved, and operation is easy.