How to press the air support rod of tricycle?

As long as the external force exceeds its pressure, the pneumatic support rod can be pressed in. Pneumatic support rods are used to lift and support components, balance gravity and replace mechanical springs of precision equipment. Pneumatic support rods have been widely used in automobile hood and back door opening, plotters, aviation shelves, printing machinery, food processing machinery and modern automation machinery and equipment, fitness equipment, textiles, computers, furniture, woodworking machinery and so on.