Vehicle distance adjusting device

The invention discloses a vehicle distance adjusting device which comprises a bottom plate, an upper plate arranged on the bottom plate, a connecting piece for connecting the upper plate and the bottom plate, an elastic structure connected with the upper plate, a roller structure connected with the elastic structure and a guide rail for guiding the roller structure. The elastic structure comprises a connecting bolt connected with the upper plate, a floating upper plate connected with the connecting bolt, a floating lower plate connected with the roller structure, and a compression spring connected with the floating upper plate and the floating lower plate; the connecting piece is loosened, the compression spring rebounds, the upper plate is jacked up and separated from the bottom plate, and the roller structures move on the guide rails and synchronously drive the upper plate to move; the connecting piece is fastened, the compression spring rebounds, and the upper plate moves downwards and is attached to the b