| 摘要 |
<p>A joining device of a passage block, comprising bolt insertion holes (13) and pin insertion holes (14) formed in an upper passage block (3), screw holes (15) and non-screw holes (16) formed in a lower passage block (4), bolts (11) inserted into the bolt insertion holes (13) and threaded with the screw holes (15), and positioning pins (12) inserted into the pin insertion holes (14) and fitted to the non-screw holes (16) at their lower end parts. A cutout part (17) is formed in the positioning pin (12) near its lower end, and a projected part (18) fitted to the cutout part (17) is formed at the opening part of the non-screw hole (16). Since the tightening force of the bolt (11) and a force applied to the projected part (18) of the non-screw hole (16) by the positioning pin (12) when the lower end part of the positioning pin (12) pushes the projected part upward are balanced each other, uniform tightening can be achieved and the passage blocks (3) and (4) can be joined to each other.</p> |
