The application is suitable for the technical field of dismounting of torsion tube, and provides a dismounting method of torsion tube of
airplane footrest. The dismounting steps of the torsion tube comprise: moving the inner tube towards the first
bushing,
cutting off the part of the inner tube exposed to the outer tube through the first
bushing; moving the inner tube towards the second
bushing, so that at least part of the inner wall of the first bushing is exposed to the inner tube; fixedly connecting the
plug in the first bushing; applying force to the plug, separating the plug and the first bushing from the outer tube together, and taking out the inner tube; fixedly connecting the
plug in the second bushing; applying force to the plug, separating the plug and the second bushing from the outer tube. In the application, the cooperation structure of the outer tube and the inner tube is used to
cut off part of the inner tube, so that the first bushing is exposed to the inner tube, the plug is fixed with the first bushing, the force point of the first bushing is increased, the operator can separate the plug and the first bushing from the outer tube, the dismounting of the torsion tube is completed without damaging the structure of the outer tube, and the replacement cost of the torsion tube is reduced.