1. Fix the oxygen bottle in the compartment and use hand-pull fasteners to secure it in the compartment.
2. Install brackets in the corners on both sides of the fuel tank. The height of the bracket is the same as the height of the oxygen bottle. Use bolts to fix the bracket and fix the oxygen bottle to the bracket.
3. Install the U-shaped bracket in the compartment, fix the oxygen bottle on the bracket, and then use bolts to fix the bracket in the compartment.
4. Fasten the oxygen bottle to the crossbeam in the carriage and use safety belts to secure the oxygen bottle to the crossbeam.
5. Install the U-shaped bracket on the fixed frame in the compartment, fix the oxygen bottle on the bracket, and use bolts to fix the bracket to the fixed frame.