Full-steel structure type water-saving ship lock

The invention belongs to the technical field of ship lock engineering, and particularly relates to a full-steel structure type water-saving ship lock. The full-steel structure type water-saving ship lock is composed of an upper brake head, a lower brake head and a lock chamber which are made of a steel structure; the lock chamber is composed of a plurality of independent structure sections, each structure section comprises a bottom plate and a gate wall, a plurality of water storage tanks are arranged in the gate walls in a layered mode, the water storage tanks are provided with water fillingports which facilitates flow-out of water, the water filling ports penetrate through the gate walls and communicate with the interior of the lock chamber, and working valves used for opening/closing the water filling ports are arranged at the positions of the water filling ports; and the upper brake head and the lower brake head are arranged on the upper and lower portions of the lock chamber respectively, water delivery