| 摘要 |
PROBLEM TO BE SOLVED: To provide a stretching tool for a leveling string that allows easy installation of a plate material on which an end of the leveling string is fitted.SOLUTION: A stretching tool for a leveling string includes a support tool 5 fitted detachably on a pile, and a fastener 9 for fixing a plate material 101 by sandwiching with the support tool 5. The support tool 5 includes a pile insertion part 13 through which the pile is inserted, a claw member 15 fixed on the pile insertion part 13, and a screw rod-form shaft part 17. The claw member 15 has four triangular claw parts 53 formed by bending four corners of a plate material perpendicularly to the plate surface. The fastener 9 includes a fastening ring 65, a handle part 67, and a cylindrical part 69 into which the shaft part 17 is screwed. The shaft part 17 of the support tool 5 is screwed into the cylindrical part 69 of the fastener 9 while the shaft part 17 of the support tool 5 is inserted in a through-hole 103 of the plate material 101, and the plate material 101 is pressed toward the support tool 5 side by the fastening ring 65. This causes an apex part 53a of the claw part 53 to bite into the plate material 101, thus fixing the plate material 101 by sandwiching the plate material between the claw part 53 and the fastening ring 65.SELECTED DRAWING: Figure 3 |
