The invention relates to the technical field of wheel retaining protection, and discloses a vehicle retaining device capable of changing the angle along with the vehicle speed. The device comprises awheel, a gear is movably connected to the interior of the wheel, the surface of the gear is movably connected with a toothed plate, the surface of the toothed plate is movably connected with a clutchplate, the surface of the
clutch plate is movably connected with a compression spring, a supporting rod is movably connected to the surface of the compression spring, a screw is movably connected to the interior of the supporting rod, a steering box is movably connected to the top of the screw, a wind sensing bag is movably connected to the surface of a retaining plate, a rotating shaft is movablyconnected to the interior of the wind sensing bag, and an expansion rod is movably connected to the surface of the rotating shaft in a sleeving mode. The rotation speed of the wheel is high, so thatwind power generated on the surface of the wind sensing bag is large, a spring plate is clamped, the inclination angle of the retaining plate is stable at the moment, and broken stones enter the retaining plate, thereby the effect of adjusting the retaining angle through the
wind power generated by rotation of the wheel is achieved.