External inflator

An external inflator, comprising a lifting pillar (1) which is a long column with rectangular cross-section and provided vertically on a fixing plane, wherein the lifting pillar (1) has a wide fixing plate on one side, with the wide fixing plate fixedly connecting to an end of a cableveyor (2);

• the lifting pillar (1) has power cable inside to which the cableveyor (2) is electrically connected via the wide fixing plate;
• the lifting pillar (1) has an upper inflating platform (3) and an lower inflating platform (5) sheathed thereon, with the upper inflating platform (3) being above the lower inflating platform (5);
• the upper inflating platform (3) is fixedly connected to the other end of the cableveyor (2) via which the upper inflating platform (3) is electrically connected to the power cable inside the lifting pillar (1);
• a pressing and positioning assembly (4) is provided and electrically connected between the upper inflating platform (3) and the lower inflating platform (5), which allows the lower inflating platform (5) to electrically connect to the power cable inside the lifting pillar (1);
• the pressing and positioning assembly (4) is mechanically connected to the upper inflating platform (3) and the lower inflating platform (5) respectively and being able to adjust the friction between the lifting pillar (1) and either of the upper inflating platform (3) and the lower inflating platform (5) under electrical control, which allows the upper inflating platform (3) and the lower inflating platform (5) to move or stop;
• the lifting pillar (1) also has a lower supporting beam (6) fixed at the bottom thereof, which provides a lowest height limit for the lower inflating platform (5), wherein the lower inflating flatform (5) comprises a gas injecting needle assembly (57) to be able to communicated with a inflating means to inject gas.