Safety device for securing horizontally loaded cylindrical goods

The invention relates to a safety device having a wedge-like shape with a low and an opposite high end, comprising a floor plate (7), one or more positioning pins (14) attached under the floor plate (7), a support member (8), rotatably connected on the floor plate (7) at the low end of the device over a swivel axis (13) and an adjustment device (10) connecting the support member (8) to the floor plate (7) at the opposite high end of the device, which adjustment device (10) is length-adjustable. Further, the invention relates to a safety system comprising the safety device and one or more specified rails for locking the safety device, a vehicle, in particular a freight wagon, comprising the safety system or safety device and a method for securing cylindrical goods in a loading space.