▎ 摘　　要

NOVELTY - The shaft has an air pump (8) provided with a motor (2) that is connected with a fixing base (1). A left connecting shaft seat (3) is fixed on an upper part of the fixing base. A right end of a transmission shaft (5) is connected with a handle (4). The transmission shaft is fixed with a right connecting shaft seat (7) that is connected with the fixing base. A shaft body (6) is connected with the transmission shaft by a screw (6-1) to change different outside diameter of the shaft body. The shaft body is connected with a multi-slide block (6-2) that is fixed on the air pump. USE - Multi-functional graphene film gas expanding shaft. ADVANTAGE - The slide block controls a pneumatic shaft so as to mount a multi-pipe core. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a multi-functional graphene film gas expanding shaft. Fixing base (1) Motor (2) Left connecting shaft seat (3) Handle (4) Transmission shaft (5) Shaft body (6) Screw (6-1) Multi-slide block (6-2) Right connecting shaft seat (7) Air pump (8)