Vertical position staged self-adjusting wave-resistant ship collision prevention device for sea-crossing bridge

The invention discloses a vertical position staged self-adjusting wave-resistant ship collision prevention device for a sea-crossing bridge, and the device comprises an anti-collision pouring jacket which is arranged around a bridge foundation near the water surface; the horizontal restraint system is arranged between the bridge foundation and the anti-collision pouring jacket; one end of the vertical restraint system is fixed to the anti-collision pouring jacket, the other end of the vertical restraint system is fixed to a bridge foundation, and the vertical restraint system is used for providing acting force opposite to the vertical movement direction or the movement trend direction of the anti-collision pouring jacket; and the adjusting water tank is arranged at the top of the anti-collision pouring jacket and is used for adjusting the underwater depth of the anti-collision pouring jacket. By means of the ship anti-collision device, the anti-collision pouring jacket can be locked under the action of small-