Lifting mast air compressor driven by a dc motor fast automatic promotion mast through the air tank, pressure switch, in order to produce high pressure gas, so as to adapt to the number of parts into the mast tube, pipe and the cylinder piston, described the effect of high pressure gas, by day, the antenna will automatically upgrade to scheduled height, and continue to work, need in the collapse of the equipment before falling rapidly withdrawn.

    An automatic ascension masts, by the air pressure source, by several section to the mast tube suite, chassis parts, such as its characteristics is in its long pressure source of magnet motor, air compressor, check valve, air storage tank structure, its output by unloading valve, relief valve, bidirectional solenoid valve, and through to the next section mast cylinder set control pressure air tank pressure switch, air tank. The third end of the two-bit tee is connected by the solenoid valve and the adjustable flow valve; Antenna automatic lifting mechanism include: multiple tube by multiple piston connection, which is connected to the base of the large pipe diameter, and the antenna is used as a fixed outside the diameter of the super small section at the top of the; The pistons are hollow pistons equipped with a y-shaped top ring, characterized by a plastic ring and an o-ring on the other end. One end is fixed in the antenna feeder circuit is the automatic expansion mechanism, the other end is fixed at the top of the pipe of the mast; Automatic telescopic line agencies including the spool, shaft, bearing, roll wheel bracket, spring seat, spring and pin, which include winding yarn tube and the baffle plate, a fixed shaft winding wheel bracket in the disc, in the center of the shaft bearing sleeve, spring seat are fixed in the valve, spring seat and spring loaded pin, and at the other end of the shaft with rotary joints.