Abstract: Disclosed is a recovery device for unmanned aerial vehicles including a recovery pulley, a pulley rail and a damper, wherein the recovery pulley is used to be coupled for recovering unmanned aerial vehicles, and the pulley rail is used to carry the recovery pulley; the recovery pulley is connected to the pulley rail by rollers, and the damper is connected to the recovery pulley for generating a damping force for a linear movement of the recovery pulley. The recovery device for unmanned aerial vehicles of the present invention can be adapted to recover all types of aerial vehicles, has a simple structure, is easy to manufacture and has a low cost. Through the cooperation of the pulley rail, the recovery pulley and the damper, the recovery of the unmanned aerial vehicles of various weights can be performed. Through the foldable and retractable pulley rail, the recovery device is highly mobile.

Abstract: The invention relates an ejection track device for a launcher, which includes a base (1) and a track (2) located on the base (1), wherein the track may be single track or formed by assembling a plurality of track sections (a, b, c, d, e), and the plurality of track sections (a, b, c, d, e), are folded and stored in a lateral direction or a vertical direction of a track plane in an end-to-end hinged mode. The track mainly comprises an upper plate, a lower plate, a left plate, a right plate and rib plates between the upper plate, the lower plate, the left plate and the right plate, which are aligned and insertedly connected and with the aid of welding. The rear portion of the track is hinged to the base, a pair of balance hydraulic cylinders are coaxially hinged to the two sides of the front portion of the track, and the other ends of the pair of balance hydraulic cylinders are also coaxially hinged to the two sides of the base.