JPH04118465A - Positioning jig - Google Patents

Abstract

PURPOSE:To make positioning work easy by inserting anchor bolts through set plates on which holes in the diameter larger than that of the anchor bolt are provided, and by fitting caps to the anchor bolts. CONSTITUTION:An anchor frame 15 is placed on leveling concrete cast over the bottom of an excavation, and set plates 24 each of which is provided with a hole 23 in the diameter larger than that of an anchor bolt 13 are placed on a frame member 20. The anchor bolts 13 are then inserted through the set plates 24, and caps 26 each of which is provided with a hole 25 in the diameter the same as that of the anchor bolts 15 are fitted by insertion to the anchor bolts 13. Thereby positioning of the anchor bolts 13 becomes easy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a positioning jig, and can be used, for example, to position an anchor bolt whose lower part is buried in a concrete foundation.

[Background technology] For example, in the construction of a steel frame building, when a column is fixed to a concrete foundation using the exposed column base method, an anchor frame is installed in the concrete at the bottom of the root cut, and then the anchor frame is fixed to the base of the anchor frame. A set plate is used to position (center) the four anchor bolts on the base plate of the column. That is, after inserting the tips of each anchor bolt into four holes formed in the set plate, the set plate is fixed at a predetermined position on the anchor frame. Each hole of the set plate is formed to have approximately the same diameter as the anchor bolt. After this, place the foundation molding formwork on the outside of the anchor frame,
Concrete slurry is poured into this formwork to form a concrete foundation.

[Problems to be Solved by the Invention] As described above, when inserting the tips of each anchor bolt into the four holes formed in the set plate, the tips of each anchor bolt are in a floating state. The positions of the tips of the four anchor bolts do not necessarily correspond exactly to the positions of the four holes in the set plate. Therefore, if the tips of multiple anchor bolts are out of alignment with the hole in the set plate, each anchor bolt must be manually moved to the hole in the set plate while being careful not to damage the threaded parts. Unfortunately, this work is not easy and takes time, reducing work efficiency on site.

An object of the present invention is to provide a positioning jig that can easily position a member to be positioned with respect to a set plate.

[Means for Solving the Problems] A positioning jig according to the present invention includes a set plate in which a hole having a diameter larger than the diameter of the member to be positioned is formed, and a hole having a diameter substantially the same as the diameter of the member to be positioned. , and a cap that fits into the hole.

The member to be positioned is, for example, an anchor bolt whose lower part is buried in a concrete foundation.

[Operation] After arranging the set plate on the member to be positioned so that the member to be positioned is inserted into the hole of the set plate according to the present invention, a cap is inserted into the member to be positioned, and the cap is inserted into the hole. By fitting, the member to be positioned can be easily positioned with respect to the set plate.

[Example] An example in which the positioning jig of the present invention is applied to positioning an anchor bolt, which is a member to be positioned, will be described with reference to FIGS. 1 to 3.

For example, in the construction of a steel frame building, a column 11 is fixed by a plurality of anchor bolts 13 whose lower portions are buried in a concrete foundation 12. These anchor bolts 1
3 is connected to an anchor frame 15 placed in the concrete 14 at the bottom of the root cut.

The anchor frame 15 includes anchor plates 17 arranged at the four corners of the base 16, main reinforcements 18 erected on each of these anchor plates 17, hoop reinforcements I9 surrounding these main reinforcements I8, and the main reinforcements 18. It has a rectangular frame member 20 connected to the upper part, and a positioning jig 21 according to this embodiment provided on the frame member 20, and the lower end of the anchor bolt 13 is attached to each of the four anchor plates 17. are combined. Such anchor frames 15 are provided at positions where the columns 11 are to be erected, and these anchor frames 15 are connected to the connecting reinforcement 22.
connected by.

The positioning jig 21 includes a square set plate 24 having a hole 23 formed therein, and a cap 26 having a hole 25 formed therein and fitted into the hole 23.

The set plate 24 has four holes 23 formed at diagonal positions where the anchor bolts 13 are inserted, and a female threaded part (in the center) into which the level adjustment bolt 27 is screwed.
(not shown) is formed.

These holes 23 have a diameter larger than the diameter of the anchor bolt 13, specifically, a diameter large enough to accommodate the misalignment of the anchor bolt 13 from its intended center position. It is formed.

Further, the cap 26 has a flange portion 29 formed above the cylindrical tube portion 28, and a bent portion 30 bent inwardly below the tube portion 28.
The inner circumferential surface of the hole 25 serves as a hole 25 for inserting the anchor pole [3]. This hole 25 is formed to have substantially the same diameter as the anchor bolt 13. Further, the cylindrical portion 28 is formed to have substantially the same diameter as the hole portion 23.

Using such a positioning jig 2I, the anchor bolt 13 is positioned as follows.

First, the anchor frame 15 excluding the set plate 24 is placed on the concrete 14 at the bottom of the root cut.

Next, the set plate 24 is placed on the frame member 20 so that the four anchor bolts 13 are inserted into the four holes 23 of the set plate 24, respectively.

At this time, since the holes 23 of the set plate 24 have a larger diameter than the diameter of the anchor bolts 13, even if the anchor bolts 13 are misaligned, the four anchor bolts can be inserted into the four holes 23 of the set plate 24. Thirteen tips can be inserted simultaneously.

Next, attach each of the four caps 26 to the anchor bolt 1.
3, and insert this cap 26 into the hole 23.
Fits in. As a result, each anchor bolt 13 inserted into the hole 25 of the cap 26
When the anchor bolts 13 are fitted into the holes 23, the positions of the holes 23 are corrected using the caps 26 as guides, and the positions of these anchor bolts 13 are accurately aligned with the four holes formed in the base plate 31 of the column 11. It will correspond to

According to the positioning jig 21 of the above embodiment, the anchor bolts 13 are simultaneously inserted into the respective holes 23 of the set plate 24, and the anchor bolts 13 are inserted into the set plate 2.
After rough positioning with respect to 4, the anchor bolt 13 can be accurately positioned at the center of the hole 23 by fitting the cap 26 inserted into the anchor bolt 13 into the hole 23. In this manner, the accurate positioning of the anchor bolt 13 with respect to the set plate 24 is performed in two steps, making the positioning work extremely easy.

Further, since the positioning jig 21 is composed of the set plate 24 and the cap 26, it has a simple structure and is easy to manufacture.

FIG. 4 shows another embodiment of the present invention, and this positioning jig 21 includes the same set plate 24 as in the above embodiment and a cap 32 described below.

That is, this cap 32 has a cylindrical portion 34 whose diameter is gradually narrowed from the top to the bottom, and whose diameter becomes thicker again from the smallest diameter portion 33 toward the lower end. A flange portion 35 is formed therein. The inner circumferential surface of the portion 33 with the smallest diameter serves as a hole 36 through which the anchor bolt 13 is inserted. This hole 36 is formed to have approximately the same diameter as the anchor bolt 13. Further, the upper edge of the cylindrical portion 34 is formed to have approximately the same diameter as the hole portion 23.

Even when the positioning jig 21 of this embodiment is used, the anchor bolt 13 can be easily positioned in the same way as in the above embodiment.

Furthermore, when the cap 32 of this embodiment is used,
Since the upper portion of the cylindrical portion 34 is tapered, it becomes easier to fit the cap 32 into the hole 23.

In addition, in the above-mentioned embodiment, an example in which the present invention is applied to the positioning of the anchor bolt 13 has been described, but the example of the member to be positioned is not limited to this, and the present invention can be similarly applied to the case of other members. .

[Effects of the Invention] According to the positioning jig according to the present invention, it is possible to easily position the member to be positioned with respect to the set plate.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a state in which an anchor bolt is positioned using a positioning jig according to an embodiment of the present invention, Fig. 2 is a front view of this embodiment, and Fig. 3 is this embodiment. FIG. 4 is a sectional view of a positioning jig according to another embodiment of the present invention. ■3... Anchor bolt, 21... Positioning jig, 23... Hole, 25.36... Hole, 26.32.
··cap.

Claims (1)

[Claims] (1) It has a set plate in which a hole with a diameter larger than the diameter of the member to be positioned is formed, and a cap that has a hole with a diameter substantially the same as the diameter of the member to be positioned and fits into the hole. A positioning jig featuring: