JPH0348970Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use This invention relates to a construction reinforcing bar support metal fitting for efficiently supporting beam reinforcing bars, etc., mainly in the outer beam portion, at construction sites.

BACKGROUND TECHNOLOGY Conventionally, when performing reinforcing work on the exterior beams of buildings, for example, as described in Japanese Utility Model Application Publication No. 54-150312, a flat U-shaped horizontal member was placed on the inner surface of the outer formwork. There is a beam spacer that is directly nailed to make it protrude.

Problems to be Solved by the Invention The above-mentioned conventional beam spacer requires a lot of effort to nail to the inner surface of the formwork, which inevitably reduces work efficiency.

Further, there is a drawback that sufficient proof strength cannot be obtained against the considerable weight of the assembled reinforcing bars of the beam, resulting in a significant decrease in assembly accuracy.

Furthermore, the removal work after construction is a double-sided and irrational method, and has serious drawbacks such as low safety and reliability in practical use.

Means for Solving the Problems This invention was devised in view of the above-mentioned problems and drawbacks of the conventional methods, and its purpose is to provide a simple and easy method for reinforcing bars attached along the outer surface of the outer formwork. The purpose of the present invention is to provide a construction reinforcing bar support metal fitting that can be installed reliably, is safe, and has high construction accuracy.

In order to achieve the above-mentioned object, this invention has a part of one side of a metal fitting body provided with an insertion hole to be inserted into the formwork reinforcing bar, with a tightening bolt that can freely advance and retreat from the formwork reinforcing bar. , characterized in that a supporting arm for suspending and supporting a reinforcing bar suspension rod is provided protruding from a part of the other side of the metal fitting body.

Effect: The above structure greatly eliminates the time and effort required to nail the mold to the inner surface of the formwork, and also eliminates the troublesome removal work.

In addition, it is possible to prevent the beam reinforcing bars from sagging after construction and achieve high accuracy and reliability.

Embodiments Hereinafter, embodiments of this invention will be described in detail based on the drawings.

FIG. 1 is a perspective view of a construction reinforcing bar support fitting according to a first embodiment of the present invention, and FIG. 2 is a partially cutaway front view thereof.

In both figures, 1 is a reinforcing bar support metal fitting, 2 is a rectangular pipe-shaped metal fitting body, which is provided with an insertion hole 2a for vertically passing through the formwork reinforcing beam, and a female threaded portion 2b is integrally provided on a part of one side of the metal fitting. A tightening bolt 3 that can move forward and backward perpendicularly to the axis of the insertion hole 2a of the metal fitting body 2
is screwed on.

Reference numeral 4 denotes a support arm integrally provided near the lower end of the other side of the metal fitting main body 2, and has an elongated insertion hole for suspending and supporting a reinforcing rod suspension inside the bent U-shaped plane. 4a is provided.

Next, an example of the use of the reinforcing bar support fitting according to the first embodiment will be described with reference to FIGS. 3 and 4.

The metal fitting body 2 is inserted into the protrusion at the upper end of the formwork reinforcing bar A (usually referred to as a reinforcing bar or vertical pipe) attached at a predetermined position along the outer surface of the outer formwork P1 assembled in advance. and then tighten tightening bolt 3 from the outside.

Furthermore, a reinforcing rod suspension rod B made of a suspension bolt is inserted from its tip along the elongated hole 4a of the support arm 4 protruding from the metal fitting 2, and is fixed with a nut N from above.

One end of the Kanzaki reinforcement C is hooked by the hook part b at the lower end of the reinforcing bar suspension rod B, and the other end is supported by the spacer S placed on the slab formwork P2, thereby attaching the main reinforcement of the beam D... and starlap muscle E.

Further, when adjusting the reinforcement accuracy of the beam and the fit within the formwork, this can be easily done by using the nut N on the reinforcing bar hanging rod B.

After the concrete is poured and cured, the upper part of the reinforcing bar hanging rod B is unscrewed, the tightening bolt 3 of the metal fitting body 2 is loosened and removed, and the concrete surface is treated as appropriate.

It should be noted that the reinforcing bar hanging rod B may be left in the concrete as an integral piece with its lower end bent into a hook shape, and this may be used instead of the reinforcing bar.

Figure 4 shows an example of use when the reinforcing bar A attached along the outer surface of the outer formwork P1 is on the same plane as the top end of the outer formwork P1. From this state, the reinforcing bar support fitting 1 is turned upside down, and the insertion hole 2a of the fitting body 2 is pushed into the reinforcing bar A, and the reinforcing bar A can be tightened and fixed from the outside.

According to the reinforcing bar support fitting of the first embodiment, it can be simply and easily attached to the formwork reinforcing bar attached to the outer surface of the outer formwork, and has excellent workability.

Furthermore, compared to the case where the beam is nailed directly to the outer formwork, sufficient bearing strength against the weight of the beam reinforcement can be obtained.

Therefore, the reinforcing bars do not sag and high construction accuracy can be obtained, resulting in excellent reliability.

Moreover, when the reinforcing bar attached to the outer surface of the outer formwork protrudes from the top of the outer formwork, or when it is on the same plane as the top, one metal fitting can be used both upside down and used upside down. It has the convenience of being extremely simple, easy, and accurate in construction, and can provide extremely excellent practical effects.

Next, another embodiment of the construction reinforcing bar support metal fitting of the present invention will be described.

The reinforcing bar support fitting for construction according to the second embodiment of the present invention shown in FIG. A tightening bolt 23 is screwed into a part of one side of the metal fitting main body so as to be able to move forward and backward, and a support arm 24 is integrated into a part of the other side.

In the case of this second embodiment, as described above, there is an effect that the reinforcing bar A attached to the outer surface of the outer formwork can be used regardless of the amount of protrusion thereof.

Furthermore, the second embodiment is conveniently applicable to reinforcing bars attached laterally.

In the construction reinforcing bar support fitting according to the third embodiment of the present invention shown in FIG. 6, the lower halves of the front and back sides of the square pipe-shaped fitting main body 32 are opened in a gate shape, and an insertion hole 32a is provided. A tightening bolt 33 is screwed into a part of one side of the metal fitting body 32, and a support arm 34 is fitted to a part of the other side.
The insertion hole 32a is fitted into the reinforcing bar A provided laterally along the top edge of the outer formwork P1, and can be tightened with a tightening bolt 33. The same effects as above can be obtained, such as being able to be inserted into and fixed to vertical reinforcing bars.

The construction reinforcing bar support fitting according to the fourth embodiment of the present invention shown in FIG. A connecting piece 42a is fixed to the top and a tightening bolt 43 is screwed on, and a support arm 44 is provided protruding from a part of the other side.In addition to the effects of the second embodiment, it is lightweight, easy to handle, and inexpensive. There are benefits it can offer.

Effects of the invention As explained in detail above, according to this invention, it can be easily attached to the reinforcing bars attached along the outer surface of the outer formwork, so it can be attached directly to the outer formwork as in the conventional method. Compared to nailing, it has the effect of preventing the reinforcing bars from sagging as it provides sufficient strength against the weight of the reinforcing bars.

Therefore, high construction accuracy and improved work efficiency can be obtained, and it is possible to obtain a construction reinforcing bar support metal fitting that is highly reliable, can be expected to save labor in reinforcing work, and is extremely effective in practice.

[Brief explanation of the drawing]

1 and 2 are perspective views and partially cutaway front views of the first embodiment of the present invention, and FIGS. 3 and 4 are the first embodiment of the present invention.
5 is a perspective view of the second embodiment, FIG. 6 is a perspective view of the third embodiment, and FIG. 7 is a perspective view of the fourth embodiment. 1...Reinforcing bar support fitting, 2...Bracket body, 3...
Tightening bolt, 4...Support arm.

Claims (1)

[Scope of utility model registration request] A tightening bolt that can move forward and backward with respect to the formwork reinforcing bar is screwed into a part of one side of the metal fitting body which has an insertion hole to be inserted into the formwork reinforcing beam, and a reinforcing bar suspension is screwed into a part of the other side of the metal fitting body. A construction reinforcing bar support fixture characterized by having a protruding support arm for suspending and supporting a rod.