| 摘要 |
PURPOSE: A leaf type air shaft is provided to enable rapid use without the replacement of lugs according to products on sheets, since the lug is partitioned into a first lug and a second lug. CONSTITUTION: A leaf type air shaft(10) comprise a journal(11), a pipe, a tube, a support piece, lugs(30,40), and a reinforcing rib(21). Both ends of the journal are supported on the bearing for fixing branch pipes. The pipe is arranged between the journals and is formed into the cylindrical shape. The tube is built-in the pipe and is expanded by the compressed air. The support piece is installed on the outer circumference of the tube. The lug is expanded to the outside and contacts the inner surface of the branch pipe. The reinforcing rib is radially formed on the outer circumference of the pipe.
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