JPH09203052A - Anchor frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchor frame capable of easily executing the positioning and fixing of anchor bolts. SOLUTION: Two up and down plates 6 and 7 are mounted to a support 9 expansible in the vertical direction, and a plurality of anchor bolts 1 are mounted between both up and down plates 6 and 7 to form an anchor frame. Anchor plate loaded nuts 2 monolithically formed of anchor plates 3 are screwed in the lower parts of the anchor bolts 1, and hexagonal nuts 4 are screwed in the intermediate sections of them. bolts having size internally touched with nut parts of the anchor plate loaded nuts 2 and upper nuts 4 are formed in both up and down plates 6 and 7. The anchor plate loaded nuts 2 screwed in the lower side of the anchor bolts 1 are inserted into holes of the lower side plate 7, the upper nuts 4 are inserted into holes of the upper side plate 6, and the positioning and fixing of the anchor bolts are simultaneously made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor frame incorporating an anchor bolt for fixing a steel frame column of a structure to a concrete foundation.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a method of fixing an anchor bolt 21 in a conventional anchor frame, in which a plate 27 supported by several columns 29 has a hole larger than the diameter of the anchor bolt 21. , The screw portion of the anchor bolt 21 is passed through the hole of the plate 27 to fix the fixing plate 2
3 and the plate 27 are sandwiched and fixed by a pair of upper and lower nuts 22.

Further, in Japanese Patent Laid-Open No. 4-118465, a hole having a diameter substantially the same as the diameter of the anchor bolt after being passed through the anchor bolt with respect to the hole formed in the horizontal plate constituting the anchor frame having a diameter larger than that of the anchor bolt. There is described a positioning jig for positioning the anchor bolt by fitting a cap having a.

[0004]

According to the conventional method,
When the anchor bolt is passed through the hole of the plate supported by the support and is sandwiched and fixed by a pair of nuts from above and below, it is necessary to tighten the upper and lower nuts, which complicates the work.

Further, since the hole diameter of the plate is larger than the anchor bolt diameter, there is a problem that the center of the anchor bolt and the center of the hole of the plate do not always coincide with each other.

The present invention provides an anchor frame which facilitates positioning and fixing of anchor bolts by using a nut with a fixing plate and a plate having a hole in which the nut with a fixing plate is inscribed.

[0007]

The anchor frame of the present invention is an anchor frame in which a plurality of screw-formed anchor bolts are fixed between upper and lower plates, and the anchor frame is attached to the lower portion of the anchor bolt and the upper surface of the nut. A nut with a fixing plate, which is an integrated fixing plate, is screwed on, and a nut is also screwed on the upper part of the fixing plate. The inner nut is inscribed and fitted, and the upper nut is inscribed and fitted in the hole provided at the anchor bolt fixing position of the upper plate.

In this case, the nut and the fixing plate are integrated,
Since the anchor bolts can be positioned and fixed simply by inserting the nuts into the holes of the plate, the work of tightening and fixing the plate and the fixing plate with a pair of nuts from above and below is eliminated, which facilitates field work.

Further, the center of the anchor bolt and the center of the plate hole can be easily aligned with each other by interposing the nut with the fixing plate and the nut on the upper part which are fitted in the hole of the plate.

Further, with respect to the anchor bolt, if an anchor bolt having a screw over the entire length is used, the nut on the upper portion can be set at an arbitrary position, and even if the space between the plates is changed, the nut is rotated to move up and down to move the nut. The position can be adjusted.

The upper and lower plates constituting the anchor frame are not limited to the two upper and lower plates, but may be a plurality of upper and lower plates.

[0012] The anchor frame is usually buried on the concrete at the bottom of the foundation while being supported by columns, a support, or some other supporting device, but leaving the upper portion of the anchor bolts in the concrete. ,
The form, number, arrangement, etc. are not particularly limited.

According to a second aspect of the present invention, as the nut with the fixing plate, a hexagonal nut having three non-adjacent sides of the six sides welded to the fixing plate is used, and the hole at the anchor bolt fixing position of the lower plate is used. Is limited to the case where a triangular hole which is in contact with three sides of the nut with the fixing plate that are not welded to the fixing plate is used.

When the nut with the fixing plate is manufactured by welding the nut and the fixing plate, depending on the shape of the hole of the plate to be fitted, the excess of welding interferes with the engagement and it is necessary to remove the excess. May occur. On the other hand, in the case of a normal hexagonal nut, depending on the shape of the hole of the plate, it is possible to maintain a stable fixed state without causing relative rotation with respect to the hole after fitting.

A second aspect of the present invention is to solve the problem of such swelling and to provide a stable fixing state by fitting a hexagonal nut into a triangular hole.

The integration of the nut with the fixing plate is not limited to welding, but it is also possible to use an adhesive or integrally mold in advance, and the holes of the upper and lower plates can be circular or polygonal. , And other various shapes are conceivable.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which two pipes 6 and 7 are provided on a support column 9 which is formed by stacking two pipes and is capable of expanding and contracting in the vertical direction. Is attached and a plurality of anchor bolts 1 are attached between the upper and lower plates 6 and 7 to form an anchor frame.

When attaching the anchor bolt 1, a nut 2 with a fixing plate, which is integrated with a fixing plate 3, is previously screwed into the lower portion of the anchor bolt 1 with the nut portion protruding downward, and the intermediate portion of the anchor bolt 1 is inserted. A hexagonal nut 4 is screwed into the.

As shown in FIG.
As shown in (a) to (d), a circular, hexagonal, quadrangular, or triangular hole 8 is formed, and the nut portion of the fixing plate nut 2 and the nut 4 above it are inscribed. It can be fitted in shape.

In this state, the nut 2 with the fixing plate screwed into the lower portion of the anchor bolt 1 is inserted into the hole 8 of the lower plate 7 of the anchor frame, and the hole 8 of the upper plate 6 is provided above the anchor bolt 1. By inserting the screwed nut 4, the anchor bolt 1 can be positioned and fixed at the same time.

The pillars 9 of the anchor frame are crushed stones 12 and cast concrete on the bottom of the foundation 1 for discarding concrete.
It is installed on 1 and the vertical positioning (height adjustment)
This is performed by expanding and contracting the column 9 in the vertical direction.

FIG. 3 shows how the hole 8 of the lower plate 7 and the nut 2 with the fixing plate are housed in one embodiment of the present invention.

In this example, a nut 2 with a fixing plate, which is fixed to a fixing plate 3 by welding six sides of a hexagonal nut, is used, and a circular hole 8 in which the nut portion circumscribes is formed in a plate 7,
The anchor bolt 1 is positioned and fixed by inserting the nut 2 with the fixing plate downward into the hole 8 of the plate 7.

FIG. 4 shows how the hole 8 of the lower plate 7 and the nut 2 with the fixing plate are accommodated in another embodiment of the present invention.

In this example, of the six sides of the hexagonal nut, three sides that are not adjacent to each other are welded together and fixed to the fixing plate 3, and the nut 2 with the fixing plate is attached. A hole 8 was opened, and the nut portion of the nut 2 with the fixing plate was faced down, and a welding extra 5 was opened in the plate 7 3
The anchor bolt 1 is positioned and fixed by inserting it in accordance with the apex of the rectangular hole 8.

[0026]

[Effects of the Invention] The anchor bolt can be positioned and fixed easily and accurately by fitting the nut with the fixing plate and the hole formed in the plate and having a size in which the nut is inscribed.

The work of sandwiching the plate and the fixing plate and tightening them with a pair of nuts from above and below is not required, which facilitates on-site work.

According to the second aspect of the invention, the hole shape of the plate is a triangle, and the hexagonal nuts are not adjacent to each other.
By using the nuts with the fixing plate whose sides are welded and inserting the extra sizing formed when the fixing plate and the nut are welded to each other in accordance with the apexes of the triangles of the plate holes, it is not necessary to cut the extra sizing to reduce the size.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

2 (a) to 2 (d) are plan views showing the shapes of various holes in the upper and lower plates.

3A and 3B show a relationship between a hole of a plate and a nut with a fixing plate in an embodiment of the present invention, FIG. 3A is a front view and FIG. 3B is a bottom view.

4A and 4B show a relationship between a hole of a plate and a nut with a fixing plate in another embodiment of the present invention, FIG. 4A is a front view and FIG. 4B is a bottom view.

FIG. 5 is a front view of an anchor frame showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Anchor bolt, 2 ... Nut with fixing plate, 3 ... Fixing plate, 4 ... Nut, 5 ... Welding surplus, 6 ... Upper plate, 7 ... Lower plate, 8 ... Hole, 9 ... Strut, 10 ... Basic concrete, 11 ... Discarded concrete, 12 ... Crushed stone

Claims (2)

[Claims] 1. An anchor frame in which a plurality of anchor bolts formed with screws are fixed between upper and lower plates, and a fixing plate formed by integrating a fixing plate on an upper surface of a nut is provided below the anchor bolt. Screw the nut,
A nut is screwed also on the upper side of the upper and lower plates, and the nut portion of the nut with the fixing plate is inscribed and fitted into the hole provided at the anchor bolt fixing position of the lower plate of the upper and lower plates. An anchor frame, wherein the upper nut is inscribed and fitted in a hole provided at a position where an anchor bolt is fixed to a plate. 2. The fixing plate nut is formed by welding three sides of a hexagonal nut that are not adjacent to each other to the fixing plate, and a hole provided in the anchor plate fixing position of the lower plate. The anchor frame according to claim 1, wherein is a triangular hole in which three sides of the nut with the fixing plate that are not welded to the fixing plate are in contact with each other.