Pneumatic extensible anchoring rack

Abstract

A pneumatic extensible anchoring rack consists of an outer tube, an inner tube, a lid and an air cylinder. The outer tube is a hollow tubular member. The lid is located above the outer tube. The air cylinder is an extensible tubular member located in a hollow space formed between the outer tube and the inner tube, and has one end fastening to the lid through a pin. The inner tube is a hollow tubular member located in the outer tube and is fastened to another end of the air cylinder through a pin. The air cylinder is extensible to control the extension or retraction of the outer tube and inner tube of a landing gear. As the pneumatic power is not sufficient to support the weight to be lifted, an anchoring means is provided for anchoring. The anchoring means includes four brake shoes located on four comers in the interior of the inner tube, four supporting rods located in the hollow space between the outer tube and the inner tube and fastened to the lid through pins, a pulling bar and a control valve. The control valve is mounted to the lid and has an air inlet and a leather bowl, a spring and an anchoring dock. The pulling bar has a lower end fastening to two sliding blocks and an upper end running through the outer tube and fastening to the anchoring dock of the control valve.

Dependencies are inferred from the claim text.