| 摘要 |
PURPOSE:To prevent a joint body from being damaged, by fixing retaining members with a positioning member, so that only the positioning member can be brocken down when an overload is applied. CONSTITUTION:A positioning plate 9 is fitted in the recessed parts provided on a first and a second retainer bodies 3, 4, respectively, and further is fixed by a removable method such as the tightening by means of bolts. The positioning plate 9 is formed by a band steel having a certain degree of elasticity and further having such a strength as it breaks down or bends when an overload is applied. Thus, since a position detecting sensor 10 operates when an overload is put on a safety joint 11 to break down or bend the positioning plate 9, the joint body itself is prevented from being damaged. |
