JPH0453405Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to floor formwork in construction work.

[Conventional technology]

As shown in Figures 9 and 10, the floor formwork used in floor concrete work for buildings usually consists of a pipe support 1 that supports a large drawer 2 at the upper end, joists 3 arranged at appropriate intervals on top of it, and A plywood weir 4 is laid on top.

[Problem that the invention attempts to solve]

In such a floor formwork, supports 1, joists 2, joists 3, and sheathing plates 4 are arranged vertically, and the joists 3 receive the concrete load applied to the shedding plates 4, and the joists 2 further carry the concrete load. Since the structure is such that the upper end of the support 1 receives it, the weir plate 4, the drawer 2, etc. cannot be removed from the mold without replacing the support 1.

In addition, remove the support 1, and remove the weir plate 4 and the large puller 2.
It is also a practice to remove the support 1 and then reinstall the support 1 to support the floor concrete until it has the required strength, but this method causes the floor concrete to sag when the support 1 is removed, which is not desirable in terms of quality control.

Also, regarding the large pull 2 beam, it is required to be strong enough to withstand the load of the floor concrete as a continuous beam, so a thick one is required.
Moreover, it has to be of a certain continuous length, and it takes a lot of effort to handle it.

Moreover, since the weir boards 4 and the main drawers 2 are made of wood, they require processing such as cutting, planing, and nailing on site, and must be assembled by professionals such as carpenters. Also,
Since the weir plate 4 and the main drawer 2 are made of wood, they are often damaged and cannot withstand many uses, making it uneconomical.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
Beam members and panel members can be demolded first without changing the support condition at the upper end of the support, streamlining floor formwork work and improving quality.Moreover, they can withstand many reuses with little damage, and To provide a floor formwork that can be easily assembled even by an amateur.

[Means for solving problems]

In order to achieve the above object, the present invention is made of a metal hollow body such as an extruded aluminum alloy shape, the upper half of the end is closed with a closing plate, and the lower half is an opening.
A beam member is provided with a locking pin for the support, and locking protrusions are protruded from the center of the side at appropriate intervals in the longitudinal direction, a metal frame made of aluminum alloy, etc., and a wooden plywood board laid on the top surface of the beam member. An engagement hole is formed in the lower end surface of the side of the metal frame body near the corner to which the locking protrusion of the beam member engages, and a hole is formed in at least the side surface in the longitudinal direction of the frame body from the upper end. A panel member that serves as a weir plate that is integrally formed with a protruding flange for maintaining spacing, and a panel member that serves as a weir plate that has a locking protrusion on the side of a metal beam member that is removably installed between supports. The gist of this is to removably support a metal frame.

[Effect]

According to the present invention, the support, beam member, and panel member can be assembled easily and quickly without sawing or nailing, and the support supports the beam member while supporting the lower surface of the concrete floor at the tip of the support. The panel member can be first removed from the support together with the panel member, and then the panel member can be removed from the demolded beam member.

〔Example〕

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

FIG. 1 is a perspective view showing an embodiment of the floor formwork of the present invention, in which 14 represents a beam member, 21 represents a panel member, and 5 represents a support.

First, as shown in FIGS. 2 and 3, the beam member 14 is made of a metal hollow body such as an extruded aluminum alloy member as an alternative to the conventional large-drawn member, and its length is between the supports 5. It is almost equal to the length of .

The upper half of the end of the beam member 14 is closed with a closing plate 16, and the lower half is an opening 17, in which a locking pin 18 for attaching to the support 5 is provided, and locking protrusions are provided at appropriate intervals in the longitudinal direction at the center of the side. 19 is installed protrudingly. In addition, a hook hole 20 for demolding was provided at an appropriate position at the bottom.

On the other hand, as shown in FIGS. 4 and 5, the beam member 1
Panel member 21 as a weir installed between 4
consists of a metal frame 22 made of aluminum alloy or the like and a panel 23 placed on the top surface of the frame 22.

An engagement hole 24 in which the locking protrusion 19 of the beam member 14 engages is formed near the corner of the side lower end surface of the metal frame 22, and an upper end is formed at least on the side surface in the longitudinal direction of the frame 22. A flange 25 for maintaining the distance protruding from the flange 25 is integrally formed.

The panel 23 is fixed to the frame 22 by screws or nails, but it is made of wooden plywood and has the advantage that metal objects embedded in concrete can be temporarily fixed to the surface by nailing. be.

In addition, as another embodiment, the panel 23 is attached to the frame 2
It may also be one that is simply placed without being fixed to 2.

The support 5 may be of any type as long as the end of the beam member 14 can be attached or detached, but as an example, as shown in FIGS. A protrusion 9 was formed to bulge in the vertical direction on the outer peripheral surface of the column 8 between the flanges 6 and 7. This protrusion 9 rises from the flange 7 and horizontally exposes its joint surface 9a between the flanges 6 and 7.

Further, a somewhat larger protrusion 11 is formed above the protrusion 9 at a slight distance from the protrusion 9.

On the other hand, 10 in the figure indicates handle 1 slightly upward from the outer periphery.
It is an annular plate body having a protruding portion 0a and a notch 10b having a similar shape slightly larger than the cross-sectional area of the protrusion 9 on its inner periphery, and a rotation preventing protrusion 10c protruding from its lower surface. The annular plate 10 is attached to the outer periphery of the column 8 so as to be slidable in the vertical direction so that the protrusion 9 fits into the notch 10b.

Note that the thickness of the annular plate 10 is thinner than the distance between the protrusions 9 and 11.

In the figure, 12 is a support for a beam member, and is a cylindrical body 12 having a notch 12a larger than the protrusion 11 on the inner periphery.
b, a receiving part 12c which projects left and right from the cylinder 12b and whose upper surface serves as a receiving surface, and a horizontal flange 12d which projects in the front-rear direction at the upper end of the cylinder 12b. The metal support 12 of this beam member is located on the annular plate 10, and is attached to the column 8 so as to be slidable up and down so that the protrusion 11 fits into the notch 12a. At the upper end of the protrusion 11, this metal holder 12 is provided.
A pull-out prevention protrusion 13 is formed to prevent it from slipping out.

Note that the upper part 5a to which the annular plate 10 and the support 12 of the beam member are attached may be constructed as an integral part with the lower part, but it may be constructed as a separate part so as to be used in conjunction with a normal support. It may also be configured as

Next, these beam members 14 and panel members 21,
To explain the formwork construction method using the support 5, the support 5 is erected and the annular plate 10 is placed on the joint surface 9 of the protrusion 9.
When rotated at point a, the positions of the notch 10b and the protrusion 9 are shifted, and the annular plate 10 cannot be moved downward.
Furthermore, the plate body 10 is no longer rotated once the rotation prevention protrusion 10c collides with the protrusion 9.

By fixing the annular plate 10 in this manner, it acts as a stopper, and also prevents the upper beam member from moving downward of the receiving metal 12. and,
Since the protrusion 11 serving as a key fits into the notch 12a serving as a keyway, the receiving metal 12 does not go around the outer periphery of the column 8.

The receiving part 12c of the receiving part 12 is connected to the opening 1 of the beam member 14.
7 so that the latching pin 18 is inserted into the receiving part 12c.
A beam member 14 is installed between the supports 5, 5 via a metal holder 12 so as to fit into the recess of the support member 14. In this case, the horizontal flange 12d of the metal holder 12 also supports the upper end of the beam member 14.

On the other hand, the locking protrusion 19 of the beam member 14 is inserted into the engagement hole 24 of the frame body 22, and the panel member 21 is installed between the beam members 14 without shifting, but in this case, the upper surface of the upper horizontal flange 6 of the support 5 Beam member 14
The upper surface and the upper surface of the panel member 21 are designed to be in close contact with each other and on the same plane so that the lower surface of the poured concrete can be directly supported without any intervening material.

The panel members 21 to be joined to each other are arranged below each other via the flange 25 with a certain gap 26 in between.

Floor concrete is poured, and once it has hardened, the annular plate 10 is rotated by hitting the handle 10a with a tool such as a hammer until the notch 10b matches the joint surface 9a of the protrusion 9. The rotation prevention protrusion 10c is useful for this positioning.

In this way, the annular plate 10 descends to the intermediate horizontal flange 7 using the protrusion 9 as a guide,
Accompanying this, the metal support 12, beam member 14, and panel member 21 are also lowered by that amount, and are removed from the lower surface of the floor concrete. At that time, the beam member 14 is pushed down with a tool using the hook hole 20. The beam member 14 and the panel member 21 are supported by the support 5.
The plate is supported at the position of the intermediate horizontal flange 7.

After doing this, if the panel member 21 is removed from the beam member 14 and the beam member 14 is removed from the metal holder 12 of the support 5, the remaining formwork members can be dismantled leaving only the support 5.

Incidentally, the gaps 26 between the panel members 21 serve to facilitate such dismantling, and also have the role of allowing freezing water caused by concrete pouring to escape.

[Effect of idea]

As described above, the floor formwork of the present invention allows the beam members and the weir plates installed thereon to be removed from the floor concrete without changing the supporting state at the upper end of the support, and the process of converting the formwork, etc. This not only makes it possible to streamline the process, but also helps improve the quality of the concrete floor without causing any deflection.

Furthermore, there are no parts of the formwork such as sawing or nailing that require the use of a professional carpenter, so even an amateur can easily assemble it. Moreover, since it is made of metal, there is less damage and it can be reused many times.

As a result, the amount of formwork material carried to the site is reduced, and the cost of transporting the material to and from the site and the effort of clearing the formwork at the site can be saved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the floor formwork of the present invention, Fig. 2 is a perspective view of a beam member, Fig. 3 is a longitudinal sectional front view of the same, and Fig. 4 is a partially cutaway perspective view of a panel member. , Fig. 5 is a vertical sectional side view of the same as above, Fig. 6 is a front view of the main parts of the support used, and Fig. 7 is A-A of Fig. 6.
8 is an end view taken along the line B--B of FIG. 6, FIG. 9 is a front view showing the conventional example, and FIG. 10 is a top side view of the same. 1... Support, 2... Large pull, 3... Joist,
4... Weir plate, 5... Support, 5a... Upper part,
6... Upper end horizontal flange, 7... Intermediate horizontal flange, 8... Column body, 9, 11... Projection, 9a... Connection surface, 10... Annular plate, 10a... Handle, 10
b...notch, 10c...rotation prevention protrusion, 12...
...Bracket for beam member, 12a...Notch, 12b...
... Cylindrical body, 12c ... Receiving part, 12d ... Horizontal flange, 13 ... Extraction prevention protrusion, 14 ... Beam member,
16...Closing plate, 17...Opening, 18...Latching pin, 19...Latching protrusion, 20...Hooking hole, 21
... Panel member, 22 ... Metal frame, 23 ...
Panel, 24...Engagement hole, 25...Flange, 2
6... Gap.

Claims (1)

[Claim for Utility Model Registration] It is made of a metal hollow body such as an extruded aluminum alloy shape, the upper half of the end is closed with a closing plate, the lower half is an opening, and a latching pin to the support is inserted here. It consists of a beam member with locking protrusions protruding from the center of the side at appropriate intervals in the longitudinal direction, a metal frame made of aluminum alloy, etc., and a wooden plywood laid on the top surface. An engagement hole is formed in the lower end surface of the side of the frame near the corner to which the engagement protrusion of the beam member engages, and a flange for maintaining the distance protruding from the upper end is integrally formed on at least the side surface in the longitudinal direction of the frame. The metal frame of the panel member as a weir plate can be attached and detached using the locking protrusion on the side of the metal beam member that is removably installed between the supports. A floor formwork characterized by bearing.