JPS6128838Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention uses a retractable beam in the floor form construction method.
This invention relates to a beam attachment tool for concrete building work used when attaching to formwork panels of beam formwork.

Conventionally, as a fixture of this type, a wedge was passed through the lower part of the fixture to tighten the end of the telescopic beam to be mounted from below, which was inserted into the fixture itself from below. It is known from the publication No.-75256. In order to facilitate the work of constructing the beam, conventional fixtures are equipped with a swingable beam bracket at the lower end of the fixture, and the beam end before being tightened with a wedge is attached to this beam bracket. It is temporarily locked. However, since the beam is locked by simply placing the end of the beam on the swingable beam holder, if you accidentally pull the beam toward one end when installing the beam, the temporarily fastened end will There was a danger that the beam could fall off very easily, leading to a serious accident due to the beam falling.

Furthermore, when the wedge is passed through the lower part of the fixture, the wedge is inserted between a pair of opposing side plates of the fixture. Therefore, the wedge had to be inserted twice, making the work of lifting and tightening heavy construction beams extremely troublesome.

Therefore, this invention was devised to eliminate the above-mentioned drawbacks and inconveniences, and aims to provide a fixture for concrete buildings that is highly durable and can be installed extremely quickly and safely.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 designates the base plate of the fixture body A that is hung on the concrete formwork 15, which is made of a substantially rectangular steel plate, and one end of which is bent into a U-shape to form the hook part 2.
The board 1 is attached by hooking the hooking portion 2 to the side plate of the concrete formwork 15.

In the substrate 1, the surface opposite to the hooking part 2 is made of thin steel that can be fitted into the U-shaped part of the hatch-shaped steel of the telescopic construction beam 14 made of lightweight hat-shaped steel, for example. A support body 3 is fixed with the cross section of the support body 3 serving as a fixation surface.

Furthermore, a beam fixing plate 4 that engages with the mounting hole of the telescoping beam 14 is vertically provided on the support body 3,
The beam fixing plate 4 is provided with a vertical locking groove 6, a lower locking groove 7, and an upper locking groove 8, which are grooves slightly wider than the plate thickness of the wedge B to be described later, as through grooves. 6 has a lower locking groove 7 in the horizontal direction, and in the vertical locking groove 6, the telescopic beam 14 is formed from the bottom surface of the support body 3.
The upper locking groove 8 is laterally connected further down from the lower position by the thickness of the hat section steel, and the length of the lower locking groove 7 is longer than the width of the front locking piece 11 of the wedge B described later. The length of the upper locking groove 8 is shorter than the width of the front locking piece 11 and longer than the width of the rear locking piece 12.

On the other hand, the wedge B is made of a tapered steel plate, and one side of the tapered piece is also bent into a substantially L-shaped cross section to form the locking piece 10. A locking groove 13, which is slightly wider than the thickness of the beam fixing plate 4, is cut out approximately one-third of the way from the tapered tip toward the rear end, and is longer than the width of the bent locking piece 10. There is.

Then, the locking piece 10 in the distal direction with the locking groove 13 as a border is the front locking piece 11, and the rear end is the rear locking piece 12, and the rear locking piece 12 is closer to the front locking piece 11 than the front locking piece 11. It is cut off slightly so that the bending width becomes narrower.

Next, to explain how to use this, first, the hooking portion 2 of the substrate 1 is hooked and fixed to the concrete formwork 15.

And a telescopic beam 14 made of lightweight hat-shaped steel
The beam fixing plate 4 is penetrated and engaged with the mounting hole in the bottom of the U-shaped portion, and the support 3 is fitted into the U-shaped portion from below.

Thereafter, in the beam fixing plate 4 that protrudes through the bottom of the U-shaped portion of the telescoping beam 14, first insert the wedge B up to the engagement groove 13 at the position of the lower locking groove 7,
Next, the telescopic beam 14 is fixed by sliding the vertical locking groove 6 and further inserting it at the position of the upper locking groove 8.

That is, when the wedge B is inserted up to the engagement groove 13 in the lower engagement groove 7 into which the front engagement piece 11 can be inserted, and at that stage the vertical engagement groove 6 is slid and brought into the upper engagement groove 8. Since the front locking piece 11 is narrower than the upper locking groove 8, the front locking piece 11 cannot be removed from the upper locking groove 8, so if it is inserted further, it will no longer slide in the vertical locking groove 6, so the mounting tool The wedge B is completely fixed to the main body A to hold the telescopic beam 14.

In addition, as long as the shape steel is used as a construction beam and has an open part at the top and a mounting through hole is provided on the bottom, any shape of the shape steel can be installed by replacing the support 3 according to the shape. It goes without saying that the present invention can be easily applied to construction beams made of the above-mentioned section steel, since it is easy to do so.

Therefore, when constructing a concrete building, the construction beam can be easily and firmly attached to the side plate of the concrete formwork.

That is, a fixture main body A is attached to the end of a construction beam that has a substantially U-shaped cross section and has a mounting hole drilled in the bottom end to connect the beam and the concrete formwork 15. Since the construction consists of a wedge B that tightens the construction beam and the fixture main body A, the number of parts is small and handling is easy.

The fixture body A is installed on a board 1 with one end of a steel plate bent into a U-shape, and on the surface opposite to the bending direction of the board 1, and is attached to the inner bottom of the U-shape of the construction beam. Approximately U-shaped support body 3 into which the outer bottom part is fitted
and a wedge B provided below from the outer bottom surface of the support body 3.
The beam fixing plate 4 has a wedge locking groove 8 through which the beam is inserted and a temporary locking groove 7, so that the bottom of the support 3 and the bottom of the construction beam fit tightly together, thereby preventing looseness during tightening. It also prevents

Moreover, the wedge fixing plate 4 is inserted downward from the mounting hole drilled at the end of the construction beam, and the wedge B is inserted into the wedge locking groove 8 of the wedge fixing plate 4 protruding from the lower surface of the construction beam.
Since the construction beam is supported and tightened on the wedge B by inserting the wedge B, the work of inserting the wedge B only needs to be done once, and it can be fixed extremely quickly.

In addition, since the wedge fixing plate 4 is inserted through the end of the construction beam, even if the beam is accidentally pulled toward one end when mounting the beam, the construction beam is restricted by the wedge fixing plate 4 and the construction beam can be prevented from falling off. Therefore, there is no risk of the temporarily fixed end falling off very easily, and the mounting work of the construction beam becomes safe.

Furthermore, in addition to the wedge locking groove 8, the beam fixing plate 4 is formed with a locking groove 13 that engages with the temporary locking groove 7 of the beam fixing plate 4. By engaging with the locking groove 7, even safer temporary fixing work can be performed.

As explained above, this invention has various practical effects such as being highly durable and allowing for extremely quick and safe mounting operations.

[Brief explanation of drawings]

The drawings show an embodiment of this invention; Fig. 1 is a front view showing the installed state, Fig. 2 is a perspective view, and Fig. 3 is a perspective view.
The figure is a side view. A... Fixture body, B... Wedge, 1... Base, 2
... Locking part, 3 ... Support body, 4 ... Beam fixing plate, 5
...Wedge locking portion, 6...Vertical locking groove, 7...Wedge locking groove, 8...Temporary locking groove, 9...Latching notch, 10...
...Locking piece, 11...Front locking piece, 12...Rear locking piece, 13...Joining groove, 14...Extendable beam, 15...
...Concrete formwork.

Claims (1)

[Scope of utility model registration request] A fixture body that is attached to the end of a construction beam having a substantially U-shaped cross section and a mounting hole formed at the bottom end to connect the beam and concrete formwork, and the construction beam. and a wedge that tightens the fixture body.The fixture body is made of a base made by bending one end of a steel plate into a U-shape, and a wedge provided on the opposite side of the base to the bending direction. A beam fixing plate having a substantially U-shaped support body whose outer bottom part fits into the inner bottom part of the U-shaped part of the beam, and a wedge locking groove provided below from the outer bottom surface of the support body and into which a wedge is inserted. On the other hand, the wedge consists of
A beam attachment tool for concrete building work, characterized in that it has a substantially L-shaped cross section and has an engaging groove that engages with a wedge locking groove of a beam fixing plate.