JPH04339964A - Anchor plate for form for placing concrete - Google Patents

Abstract

PURPOSE:To simply and accurately set an anchor bolt in the placing groove of concrete. CONSTITUTION:An anchor bolt 28 comprises a bed plate 14 having a large insertion hole 13 in which the anchor bolt 11 can be dropped and two sheets of plates 14, 17 of the support plate 17 having a small insertion hole 16. The bed plate 14 having a large insertion hole 13 is fixed by nails at a form 26 and the anchor bolt 11 is dropped in the insertion hole 13 to set it in the placing groove of concrete. The insertion hole 16 is met at the protruded bolt 15 and the support plate 17 is superimposed on the bed plate 14. And the axis of anchor bolt 11 is met along the centerline O-0 of the concrete placing groove 27 to fix the support plate 17 to the bed plate 14. In this way, since it is not necessary to insert the anchor bolt 11 in the concrete placing groove 27 and diagonally insert it in the insertion hole of anchor bolt from the lower side to the upper side, the anchor bolt 11 is facilitated to settle in the concrete placing groove 27.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor plate for supporting an anchor bolt installed in a concrete pouring groove of a temporary frame assembled for pouring concrete in construction and civil engineering work.

0002

[Prior Art] This kind of conventional anchor plate 23 is
It is made using plywood or crosspieces, or by drilling an insertion hole 24 in the center of a steel plate, etc., large enough to insert the bolt part 15 of the anchor bolt 11, and fixing it to the temporary frame by nailing the periphery of the hole 24. Nail holes 25 are appropriately opened for this purpose.

[0003] The temporary frame is made by arranging the formworks 26A and 26B in parallel and nailing baseboards between their upper edges to form the concrete pouring groove 27.
It can be assembled by aligning the width.

The anchor plate 23 is installed in a temporary frame by aligning the center of the insertion hole 24 with the center line O-O determined by stretching a water line in the concrete pouring groove 27,
It is used by nailing it to the upper edge of A/26B.

[0005] The insertion hole 24 is used to insert the installed anchor bolt 2.
3 is opened as small as possible to eliminate looseness, and on the other hand, the anchor portion 12 of the anchor bolt is made thicker in diameter than the bolt portion 15 in order to produce an anchoring effect.

For this reason, it is not possible to drop the anchor bolt 11 from above down into the insertion hole 24 of the anchor plate fixed to the temporary frame, and the anchor bolt 11 cannot be inserted into the concrete pouring groove 27 of the temporary frame. Insert the bolt part 15 into the insertion hole 24 diagonally from the bottom to the top.
(Figure 4).

[0007]

[Problem to be Solved by the Invention] When the anchor bolt is dropped into the concrete pouring groove 27, the bolt portion 15
must be long enough to protrude above the anchor plate 23, so if a reinforcing bar is installed in the concrete pouring groove 27, the reinforcing bar will become an obstacle and will not be inserted diagonally from the bottom to the top. It becomes difficult to insert it into the hole 24.

[0008] Also, the bolt portion 15 is arranged diagonally from the bottom to the top.
must be inserted into the insertion hole 24, so the diameter of the insertion hole 24 has to be larger than the thickness of the bolt, and as a result, there is a gap between the insertion hole 24 and the bolt when it is inserted and protruded vertically. Since it is possible, anchor bolt 11
This results in rattling inside the insertion hole 24.

Such looseness causes the anchor bolt 11 to be misaligned when pouring concrete, so the gap between the insertion hole 24 and the bolt portion 15 is filled and the axis of the anchor bolt 11 is placed in the concrete. It becomes necessary to perform work to align the center line O-O of the groove 27 again.

[0010] Furthermore, when concrete is poured, the anchor bolts 11 are washed away by the ready-mixed concrete, and the positional deviation of the anchor bolts 11 in the concrete becomes larger in proportion to the distance between the concrete and the anchor plate. Even if an attempt is made to correct the misalignment immediately after, some anchor bolts may not be able to be corrected due to movement of reinforcing bars due to concrete pressure.

[0011]

[Means for Solving the Problems] The anchor plate 28 for concrete pouring formwork according to the present invention solves this inconvenience, and has an insertion hole 13 large enough to allow the anchor portion 12 of the anchor bolt 11 to be inserted. A bed plate 14 has a hole in the center thereof, and a support plate has an insertion hole 16 in the center which has a smaller diameter than the insertion hole 13 of the bed plate 14 and is large enough to allow the bolt part 15 of the anchor bolt 11 to be inserted. 17 and two plates 14.
17, and the plates 14 and 17 are stacked on top of each other by aligning the insertion holes 13 and 16 in symmetrical positions with the insertion holes 13 and 16 as the center. When matching, the length direction is different,
In addition, long holes 18 and 1 are perpendicular to each other in their length directions.
9, 20, and 21 are opened, respectively, and the long holes 18 and 19 in the bed plate 14 are longer distances from the insertion hole 13 than the outer ends, and are symmetrical about the insertion hole 13. It is characterized by having nail holes 22 drilled at the positions shown in FIG.

The insertion hole 16 of the support plate 17 is preferably formed by projecting a pipe 38 having an outer diameter that fits loosely into the insertion hole 13 of the bed plate 14 perpendicularly to the plate surface of the support plate body (FIG. 1).

The bed plate 14 is attached to the upper edges of the parallel formworks 26A and 26B with nails 19.
It is possible to perform tentering.

The insertion hole 13 of the bed plate 14 nailed in this manner has a diameter P that is equal to the anchor portion 12.
Since the thickness Q is larger than the thickness Q, the anchor bolt 11 can be dropped with the anchor portion 12 facing downward.

The support plate 17 is dropped into the bed plate 14 by aligning the insertion holes 16 with the protruding bolt portions 15.

In the overlapping state, the long holes 18 and 19 of the bed plate 14 and the long hole 2 of the support plate 17
0 and 21 are perpendicular to each other, and a gap surrounded by these elongated holes is created, so a bolt 30 is inserted into the gap and a nut 31 is screwed to join both plates 14 and 17.

At this time, the support plate 17 is moved left and right to align the center of the insertion hole 16 with the center line O-O of the concrete pouring groove 27, but the bed plate 14
long holes 18 and 19 and long holes 20 and 20 of the support plate 17.
21 are orthogonal, so even if the support plate 17 is moved from side to side, the gap into which the bolt 30 is inserted will not be blocked.

The illustrated bed plate 14 has long holes 1
There is another long hole 32 (33) between 8 (19) and the nail hole 22, but this long hole 32 (33) is used when the concrete pouring groove 27 intersects in a cross shape or T shape. be done.

In such intersecting concrete pouring grooves, the sub-plate 36 is spanned between the left and right formworks 35A and 35B of one of the intersecting concrete pouring grooves 34 and fixed by nailing, and the concrete Formwork 2 of driving groove 27
A bed plate 14 is bridged between 6B and the sub-plate 36.

That is, the long holes 32 and 3 of the bed plate 14
3 is for locking the sub-plate 36. For this purpose, claws 37 that fit into the elongated holes 32 and 33 are provided protruding from the sub-plate 36, and the bed plate 14 is fixed to the claws 37. After fitting the elongated holes 32 (33), the other end is fixed to the formwork 26B by nailing.

As described above, the long holes 32 (33) and the claws 37 are for connecting the bed plate 14 and the sub-plate 36, and in the illustrated embodiment, the bed plate 14
A long hole is provided in the sub-plate 36, and a claw is provided in the sub-plate 36.
You can also do it the other way around.

[0022]

[Effects of the Invention] The anchor plate 28 according to the present invention has the following features:
A bed plate 1 having an insertion hole 13 in the center that is large enough to allow the anchor portion 12 of an anchor bolt 11 to be inserted therethrough.
4 and a support plate 17 having an insertion hole 16 in the center that is smaller in diameter than the insertion hole 13 of the bed plate 14 and large enough to allow the bolt part 15 of the anchor bolt 11 to be inserted. 17, the anchor bolt 11 can be dropped into the insertion hole 13 of the bed plate 14 and installed in the concrete pouring groove 27, and there is no need to pass through the concrete pouring groove and protrude from the bottom to the top. Even if reinforcing bars are installed in the concrete pouring groove, it will not impede the work in any way.

Furthermore, since the diameter R of the insertion hole 16 of the support plate 17 superimposed on the bed plate 14 can be made approximately the same as the thickness S of the bolt portion 15 of the anchor bolt, the anchor bolt 11 is prevented from rattling. The concrete can be fixed in alignment with the center line O-O of the concrete pouring groove 27 so that it does not occur.

The long holes 18, 19, 20, 21 of the bed plate 14 and the support plate 17 have different length directions when the plates 14, 17 are overlapped with their insertion holes 13, 16 aligned, and , are orthogonal in their length directions, so even if the support plate 17 is moved back and forth and left and right on the bed plate 14 fixed by nailing, the gap for inserting the bolt 30 will not be blocked.
Move the support plate 17 back and forth and left and right to insert the insertion hole 16.
can be accurately aligned with the center line O-O of the concrete pouring groove 27.

In particular, the insertion hole 16 of the support plate 17 is formed with a pipe 38 having an outer diameter that fits loosely into the insertion hole 13 of the bed plate 14, and the pipe 38 is perpendicular to the surface of the support plate 17. If you stick it out,
Since the anchor bolt 11 is also vertically supported along the pipe 38, the anchor bolt 11 can be set with high precision.

Furthermore, since the bed plate 14 can be used as a baseboard for width-setting the concrete pouring groove 27, no special baseboard is required, and the number of parts of the anchor plate 28 in the present invention is reduced. There are two, the bed plate 14 and the support plate 17, but the number is the same as the conventional baseboard and anchor plate combined, so even if the anchor plate 28 is composed of a set of two pieces. The number of parts does not particularly increase, and the present invention does not cause any practical problems.

As described above, the present invention is extremely advantageous in efficiently and accurately installing and fixing anchor bolts.

[Brief explanation of drawings]

FIG. 1 is an assembled perspective view of an anchor plate according to the present invention in a used state.

FIG. 2 is an assembled perspective view of the anchor plate according to the present invention in a used state.

FIG. 3 is an assembled perspective view of the anchor plate according to the present invention in a used state.

FIG. 4 is a perspective view of a conventional anchor plate in use.

[Explanation of symbols]

11 Anchor bolt 12 Anchor part 13 Insertion hole 14 Bed plate 15 Bolt part 16 Insertion hole 17 Support plate 18 Long hole 19 Long hole 20 Long hole 21 Long hole 22 Nail hole 23 Anchor plate 24 Insertion hole 25 Nail hole 26 Formwork 27 Driving groove 28 Anchor plate 29 Nail 30 bolts 31 Nut 32 Long hole 33 Long hole 34 Driving groove 35 Formwork 36 Sub plate 37 Nails

Claims (2)

[Claims] Claim 1: (A) Anchor portion 1 of anchor bolt 11
The bed plate 14 has an insertion hole 13 in the center that is large enough to allow the anchor bolt 11 to be inserted through the bed plate 14. Two plates 14.1 with a support plate 17 having a hole 16 in the center
(B) These two plates 14 and 17 have holes 13 and 16 at symmetrical positions around their insertion holes 13 and 16;
Align those insertion holes 13 and 16 to the plates 14 and 1.
7, the long holes 18, 19, 20, which have different length directions and are perpendicular to each other in the length directions are formed.
(C) In the bed plate 14, the elongated holes 18 and 19 are longer distances from the insertion hole 13 than the outer ends, and are located at symmetrical positions with the insertion hole 13 as the center. An anchor plate for concrete pouring formwork, characterized in that: , nail holes 22 are opened; 2. In the anchor plate for concrete pouring formwork according to claim 1, the insertion hole 16 of the support plate 17 is connected to the insertion hole 13 of the bed plate 14.
The concrete casting mold anchor according to claim 1, wherein the anchor is formed of a pipe 38 having an outer diameter that fits loosely into the support plate 17, and the pipe 38 projects perpendicularly to the surface of the support plate 17. plate.