| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily obtain an inexpensive turnbuckle with a tension sensor. <P>SOLUTION: A turnbuckle 2 is used comprising: a fastening central rotary part 6; and a first fastening bolt 11 and a second fastening bolt 12 screwed respectively to female screw parts 4, 5, which are screws inverse to each other, on both sides of the fastening central rotary part 6. A turnbuckle accessory fitting 1 has a rod-like shape, has a male screw part 16 on one side thereof and has a female screw part 15 on the other side to connect the fastening central rotary part 6 to one fastening bolt of the two fastening bolts 11, 12. For example, the male screw part 16 of the accessory fitting 1 is screwed to one female screw part 4 of the fastening central rotary part 6, and a male screw part 7 of the first fastening bolt 11 is screwed to the female screw part 15 of the accessory fitting 1. A concavity part 18 is formed on an outer circumferential surface of the accessory fitting 1, a strain gauge 19 is stuck to the concavity part 18, and a protection member 20 is provided for protecting the strain gauge 19. The turnbuckle 2 for general use can be inexpensively changed to a turnbuckle 3 with a tension sensor. <P>COPYRIGHT: (C)2013,JPO&INPIT |
