| 摘要 |
PURPOSE: A flexible operational tube is provided to continuously supply a lubricant to a cutoff water packing inserted into a pipe joint part to be moved with less power. CONSTITUTION: A flexible operational tube (1) comprises a flange ball pipe (5), an expansion pipe (6), operational tubes (2, 2'), and a cutoff packing (3). An insertion flow rim (25) expanded in an arc shape is formed at one end of the flange ball pipe and an operational linear part (11) in which one or more packing insertion grooves (10) are formed to be protruded is formed at the other side of the flange ball pipe. An insertion rim (24) expanded in an arc direction is inserted into the outer surface of the insertion flow rim of the flange ball pipe. The expansion pipe is equipped with an expansion linear part (12) inserted into the outer circumferential surface of the operational linear part. A lubricant storing path is formed along the circumference to the inner side at the top center of the cutoff packing. A lubricant supply path is formed along the circumference to the inner side at the lower surface of the lubricant storing path in an opposite direction. |
