JPS61162671A - Apparatus for positional control of torsion cutting type main reinforcement - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a position adjustment device for threaded main reinforcements used for connecting column main reinforcements, beam main reinforcements, etc. of steel reinforced concrete structures.

(2) Conventional technology Conventionally, connecting main reinforcements placed around a steel frame approximately parallel to the steel frame costs $5F! ! As shown in J, main reinforcement (a)-(
The reinforcing bar (b) is wound around the reinforcing bar (b) in a spiral shape, and the intersection with the reinforcing bar (b) with the main bar (&) is connected to each steel wire (
c)... Each main reinforcement (a) is tied by (c).
or by welding the main reinforcement (a) with the main reinforcement (a') to be connected to it, or by connecting the main reinforcement (a) with threads (d) on the outer circumferential surface to each main reinforcement with long nut-shaped joints (e) as shown in Fig. 6. (
&) with the main reinforcement (a') to be connected to the main reinforcement (a') (3) Problems to be solved by the invention When the main reinforcement is connected by welding, the work is complicated; However, when the distance between the main reinforcements to be connected is large, welding work is not easy and is extremely complicated;
It is necessary to match the positional relationship of each thread between the main reinforcements to be connected, and when the main reinforcements are rotated to match this, the main reinforcements move laterally and are further tied to the band reinforcing bars. The drawback was that the steel wire could get twisted and break.

SUMMARY OF THE INVENTION An object of the present invention is to provide a position adjustment device for threaded main reinforcing bars that can eliminate these drawbacks and connect main reinforcing bars quickly and easily with simple work.

(4) Means for Solving the Problems In order to achieve the above object, the threaded main reinforcement position adjustment device of the present invention has screws formed on the outer circumferential surface of the steel frame, which are disposed around the steel frame and substantially parallel to the steel frame. A plurality of main reinforcements, a plurality of ring-shaped connecting members arranged at intervals so as to wrap around these main reinforcements, and a plurality of ring-shaped connecting members fixedly attached to one of the connecting members and screwed to each of the plurality of main reinforcements. It is characterized by comprising a plurality of nuts and a pipe fixed to other connecting members and slidably fitted to each of the plurality of main reinforcing bars.

(5) Action First, the reinforcement work on the main reinforcement is carried out with the joint completely screwed into the main reinforcement, and then the joint is rotated and fed out from the main reinforcement, and the threads formed on the main reinforcement are If the position of the thread does not match the position of the thread formed on the main reinforcement to be connected, the fed-out joint will not be able to screw into the main reinforcement to be connected, so the two main reinforcements to be connected will be connected by rotating the main reinforcement. It is necessary to match the positional relationship of each screw thread in between.

Here, the main reinforcement is screwed with a nut fixed to the - connecting member, so the main reinforcement can move vertically without moving horizontally due to rotation, and can also move in the vertical direction without moving in the horizontal direction. Since the pipe fixed to is only slidably fitted to the main reinforcing bars, the main reinforcing bars cannot be prevented from rotating or moving in the vertical direction, and the horizontal position is maintained as is. In this way, when the main reinforcement is rotated, it moves in the vertical direction without moving in the horizontal direction, and when the thread positions of the main reinforcement and the main reinforcement to be connected to it match, the joint is further rotated to connect the two main reinforcements at the same time. Screw them together to complete the connection.

(6) Embodiment An embodiment in which the present invention is applied to a column main reinforcement will be described based on FIGS. 1'rgJ to 4.

(1) is a steel frame, (1a) is a column steel frame, (1b) is a beam steel frame, and around the column steel frame (1a) is the column steel frame (la).
A plurality of main reinforcing bars (2), .

(3)...(3) indicates ring-shaped connecting members, that is, hoop bands, arranged at intervals so as to wrap around the main reinforcements (2)...(2), and these hoop bands (3) ...
A plurality of nuts (4) in which one hoop band (3a) of (3) is formed with a female thread (4a) that engages with a male thread (2a) formed in each of the main reinforcements (2). 4
) are welded and fixed, and the main reinforcements (2)...(2) are screwed into these nuts (4)...(4), and the main reinforcements (2)...
- The horizontal and vertical positions in (2) are now maintained accurately.

Among the connecting members (3)...(3), the nut (4)
...(4) is welded and fixed to other connecting members, that is, the hoop band (3b)...(3b), each of which has a plurality of pipes (5)...(5) welded and fixed to the main reinforcing bars. (2)...
・Insert (2) into each of these so that it can slide freely, and attach the main reinforcement (2)
)・-(2) The horizontal position is maintained accurately.

(6) indicates a long nut-shaped joint that is screwed into the end of each of the main reinforcements (2), and as shown in FIG. 4(D), the joint (6)
) are evenly screwed into the main reinforcements (2b) (2c) of the two trees to be connected, these main reinforcements (2b) (2c)
I tried to connect it.

(7) shows a reinforcing band wound spirally around the main reinforcing bars (2)...(2), and the reinforcing bar (7) is wrapped around the main reinforcing bars (2)...(2) in advance. Leave it folded in the position where it will be turned, and after connecting the main bars (2)...(2), stretch the reinforcing bars (7) upwards, and... Main bars (2)...(2)
At each intersection with the steel wires (8)...(8), the wires were tied together. In Figure 1, (7a) is the reinforcing bar in the folded state, and (7b) is the main reinforcing bar (2) after being stretched upward.
...(2) Shows the tied reinforcing bars at the intersection.

Next, the use of the above-mentioned embodiment device will be explained.

First, as shown in Fig. 1, all the connecting members, that is, hoop bands (3)...(3) are assembled to the main bars (2)...(2), and the hoop bands (7)...(7 ) all (7a
) and put the joint (6) in the first position.
As shown in the figure and Fig. 4 (A), each main reinforcement (2), that is, (
2b) completely screwed together. By sequentially arranging the main reinforcing bars in this state, the end of the main reinforcing bar (2b) has only a small number of ends of other main reinforcing bars (2C) to be connected thereto.

They are arranged close to each other with a gap between them.

Next, the joint (6) screwed onto the main reinforcement (2b) is rotated and fed out from the main reinforcement (2b).
The position of the thread in 2b) and the main reinforcement to be connected to it (
If the thread positions of the joint (6) match exactly, the joint (6) will be screwed into the main reinforcement (2c) to be connected, as shown in Fig. 4(D). ) are evenly screwed into the two main reinforcing bars (2b) (2c) to be connected, so that these main reinforcing bars (2b) (2c) are connected.

As shown in Figure 4 (B), the two main bars (2b
) If the positions of the screw threads in (2c) do not match, the j1 hand (6) cannot be screwed into one of the main reinforcements (2C), so the main reinforcement (2b) as shown in Figure 4 (C). Rotate the two main bars (2b) (2c) by an appropriate angle.
Match the position of the screw threads. In this case, the main reinforcing bar (2b) rotated once is threaded with the nut (4) fixed to the connecting member (3), so the main reinforcing bar (2b) does not move horizontally but slightly vertically due to the rotation. Just move in the direction. The pipes (5)...(5) fixed to the other connecting members (3)...(3) are only slidably fitted to the main bar (2b), so ) without interfering with its rotation or vertical movement, and serves to maintain its horizontal position as it is.

Once the screw threads of the two main reinforcements (2b) and (2c) match in this way, the same procedure as in the previous case is shown in Figure 4 (D).
), the main reinforcement of the two trees to which the joint (6) should be connected (
2b) Screw evenly onto (2c) to complete the connection.

After the connection of all the main bars (2)...(2) is completed, the hoop reinforcing bars (7) are stretched upward and the steel wires (8)...
Bind and fix to the main reinforcing bars (2)...(2) using (8).

(7) Effects of the Invention According to the present invention, two connections can be made simply by rotating the main reinforcement.
Since the thread positions of the main reinforcements of the wood can be matched and the joints can be screwed together at the same time, it is possible to connect the main reinforcements quickly and easily, and the position of the main reinforcements can be adjusted to - Since they are held by nuts fixed to the connecting members and pipes fixed to other connecting members, their positions will not shift due to rotation of the main reinforcing bars, and the binding of the main reinforcing bars and the reinforcing bars will be easy. Since this can be carried out after the main reinforcing bars are connected, the bundled steel wires will not be damaged due to the rotation of the main reinforcing bars, thereby ensuring reliable and safe construction work.

[Brief explanation of drawings]

The IT diagram is a front view of the embodiment of the present invention, FIGS. 2 and 3 are sectional views each showing an enlarged part thereof, and FIG. 4 is a sectional view of a main part showing the adjustment and procedure of the embodiment of the present invention. Figures 5 and 6
m is a front view showing each prior art. (la) --- Column steel frame (2) --- Main reinforcement (
2a)...Male thread (3)...Connecting material (4
)...Natsuto (5)...Pipe 1st
Figure 5 Figure 6 □ Procedural amendment (Issued by 岨) July 1986, ≠ Date, l Indication of the case 1985 Patent Application No. 2661 2 Name of the invention Position adjustment device for onion-cut main bars 3 Amendment Relationship with the case of the person who filed the patent application Address of the patent applicant: 3-1o-1 Iwamoto-cho, Chiyoda-ku, Tokyo Name
Mitsui Construction Co., Ltd. Representative: Town 1) Ryoji 4 Agent: 103 Address: 16-8-5 Nihonbashi Kodenma-cho, Chuo-ku, Tokyo Column for detailed explanation of the invention, column for brief explanation of drawings of the specification subject to amendment, and drawing. 6 Contents of the amendment (1) The following matters are inserted between the fourth and fifth lines of page 9 of the specification. 7 to 9 show another embodiment, in which the connecting member (11) is formed in the shape of a rectangular frame as shown in FIG. Through holes (12)...(12) are formed at the locations where the main reinforcement (2) is planned to be set on each side.Then, as shown in Figure 9, the connecting members (11) (11) are connected to the upper and lower beam steel frames ( lb) (lb) with a clamping means such as a shako vise, and threaded main reinforcements (2)...(2) are inserted into the through holes (12)...(12) of the upper and lower connecting members (11) (11). ) and attach the nut (13) to the upper end of each main bar (2).
are screwed together to protrude upward from the upper connecting member (11), and the length of the column head of each main reinforcement (2) is set to a predetermined length. After setting the main reinforcements (2)...(2) on the steel frame (1) in this way, the steel frame (1) is lifted up by a crane. At this time, the lower connecting member (11) is removed, and the steel frame (1) is positioned on the upper end of the steel frame of the floor that has already been constructed to connect the upper and lower steel frames, and the main reinforcements of these steel frames are connected as described above. Connect with joint (6) as in the example. After that, when the construction floor advances to the position of the head of this new connected steel frame (1), the upper connecting member (11) is removed, and the construction continues in the same manner.
These removed connecting members (11) (11) can be used many times to set the main reinforcing bars on the next steel frame, which is economical, and it is easy to set the main reinforcing bars and connect them, shortening the construction period. Regarding the connecting material (11), for example, when forming a column with a pentagonal cross section, a frame shaped one as shown in Fig. 1θ may be used, and connecting materials of various shapes can be applied depending on the shape of the column. (2) In the second and third lines of page 10 of the same book, "...is a front view." is corrected as follows. 7 is a plan view of a connecting member according to another embodiment of the present invention. FIG. 88 is a sectional view taken along the line ■-■. FIG. The figure is a plan view of a connecting member of yet another embodiment.'' (3) Regarding the drawings, Figures 7 to 10 are added as attached. Figure 10.

Claims (1)

[Claims] A plurality of main reinforcing bars with threads formed on the outer circumferential surface arranged around the steel frame substantially parallel to the steel frame, and a plurality of ring-shaped connecting members arranged at intervals so as to wind around these main reinforcing bars, A plurality of nuts are fixed to one of these connecting members and are screwed into each of the plurality of main reinforcements, and a pipe is fixed to the other connecting member and slidably fitted to each of the plurality of main reinforcements. A position adjustment device for a threaded main reinforcement.