JPH0481025B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floor formwork device for construction work.

[Conventional technology]

As shown in Fig. 11 and Fig. 12, 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, and joists 3 arranged at appropriate intervals on top of it, as shown in Figs. A plywood weir 4 is laid on top. Moreover, instead of the above-mentioned large drawer 2, a beam member such as a peco beam may be used, and a metal floor plate such as a deck plate may be used.

[Problem to be solved by the invention] In any case, in the floor formwork using the support 1, the support 1, the overhang 2, the joist 3, and the weir plate 4 are arranged in the vertical direction, and the concrete load applied to the weir plate 4 is transferred to the joist. 3 receives it, the large puller 2 receives it, and the upper end of the support 1 receives it, so it is not possible to demold the weir plate 4, the large puller 2, etc. without replacing the support 1. I can't.

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.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
By removing other members from the mold without changing the supporting state of the floor concrete at the upper end of the support, quality can be improved and formwork construction can be streamlined.Moreover, work can be done safely even in tight spaces when removing the mold in this way. The object of the present invention is to provide a floor formwork device that can be used to form a floor.

[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 open.
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 plate laid on the top surface of the beam member. The lower end surface of the side of the metal frame is formed near the corner with an engagement hole into which the locking protrusion of the beam member engages, and the frame has an engagement hole protruding from the upper end at least on the side surface in the longitudinal direction of the frame. The panel member as a weir plate integrally formed with a flange for maintaining the distance between the panels and the main body as a support can be the same as a normal support, but the upper horizontal flange and the intermediate horizontal flange that will serve as a support for the lower surface of the concrete are attached to the top. flanges, and on the outer peripheral surface of the column between the flanges, a protrusion that rises from the intermediate horizontal flange and horizontally exposes the joint surface between both flanges is formed to bulge in the vertical direction; A slightly larger protrusion is formed at the upper part of the protrusion at a slight distance from the protrusion.
A handle protrudes slightly upward from the outer periphery, a notch of a similar shape slightly larger than the cross-sectional area of the protrusion is formed on the inner periphery, and the protrusion includes an annular plate with a rotation prevention protrusion protruding from the lower surface. It is attached to the outer periphery of the column so as to fit into the notch so as to be slidable in the vertical direction, and has a cylindrical body having a notch larger than the protrusion on the inner periphery, and a cylindrical body that protrudes left and right from the cylindrical body and has an upper surface. A receiving part of a beam member consisting of a receiving part serving as a receiving surface and a horizontal flange protruding in the front-rear direction at the upper end of the cylinder is positioned on the annular plate, and the protrusion is fitted into the notch. A metal beam that is attached to a column so that it can slide up and down, and a support that has a pull-out prevention protrusion at the upper end of the protrusion to prevent the metal support from falling out, and that is removably installed between the supports. The gist of the present invention is to detachably support a metal frame of a panel member serving as a weir plate using locking protrusions 1 on the sides of the member.

[Effect]

According to the present invention, the annular plate acts as a stopper for vertical movement of the beam member holder, and if the inner peripheral notch of this annular plate does not match the joint of the protrusion, the annular plate The beam member holder is locked in place. Further, by turning the annular plate and aligning the inner peripheral notch and the joint of the protrusion, the lock is released and the beam member and the metal fitting slide downward. As a result, the beam member or the weir plate supported by the beam member will be in a state where it can be dismantled with the lower support remaining.

Therefore, by pushing down the beam member along the support, it is possible to demold the beam member, etc. and sheath plate first, leaving only the support, and once the beam member and sheath plate have been demolded in this way, Since it is temporarily supported at the middle part of the support, subsequent disassembly can be carried out safely.

Furthermore, the supports, beam members, and panel members can be easily and quickly assembled without sawing or nailing.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the floor formwork apparatus of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a longitudinal cross-sectional side view of the same.
A panel member as a sill plate is shown.

First, to explain these members used, the main body of the support 5 as a column may be the same as a normal support, as shown in Figs. 4 to 6, but the upper part 5
A is provided with an upper end horizontal flange 6 and an intermediate horizontal flange 7 which serve as a support for the lower surface of the concrete, and a protrusion 9 is 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 its joint surface 9 is located between the flanges 6 and 7.
Expose a horizontally.

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 a cylindrical body 1 has a notch 12a larger than the protrusion 11 on the inner periphery.
2b, a receiving part 12c which protrudes left and right from the cylindrical body 12b and whose upper surface serves as a receiving surface, and a horizontal flange 12d which protrudes in the front-rear direction at the upper end of the cylindrical body 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

As shown in FIGS. 7 and 8, the beam member 14 is made of a metal hollow body such as an extruded aluminum alloy member, as an alternative to the conventional long-drawn member, and its length is equal to the length between the supports 5. It is almost equivalent to .

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, 21 is a panel member 21 as a weir installed between the beam members 14, which is shown in FIG.
As shown in FIG. 10, a metal frame 22 made of aluminum alloy or the like and a panel 23 laid on its upper surface
It consists of a combination of

An engagement hole 24 into 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 protruding from the flange 25 is integrally formed.

The panel 23 is fixed to the frame 22 with screws or nails, and is made of a synthetic resin board or wooden plywood. When wooden plywood is used, it has the advantage that metal fittings embedded in concrete can be temporarily fixed to the surface by nailing.

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.

Next, the construction method of the present invention using these supports 5, beam members 14, and panel members 21 will be explained. When the supports 5 are erected and the annular plate 10 is rotated on the joint surface 9a of the protrusion 9, the notch 10b and The position of the protrusion 9 is shifted and the annular plate 10 cannot be moved downward. Further, the rotation of the plate body 10 is controlled by a rotation prevention protrusion 10c.
If it collides with the protrusion 9, no further action will be taken.

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 slidably installed between the supports 5, 5 via a metal holder 12 so as to fit into the recess of the beam 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 panel member 21 is constructed between the beam members 14 by inserting the locking protrusion 19 of the beam member 14 into the engagement hole 29 of the frame 22. In this case, as shown in FIGS. 2 and 3, the support 5 The upper surface of the upper end horizontal flange 6, the upper surface of the beam member 14, and the upper surface of the panel member 21 are designed to be close to each other and lined up on the same plane so that they can directly support the lower surface of the poured concrete without any intervening material. .

Floor concrete is poured, and when it hardens, 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.
It is temporarily supported at the intermediate horizontal flange 7 position, that is, at a position slightly lower than the lower surface of the concrete floor.

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.

〔Effect of the invention〕

As described above, the floor formwork device of the present invention can remove the beam members and the weir plates installed thereon from the floor concrete without changing the supporting state at the upper end of the support, allowing the formwork to be used for other purposes. This not only streamlines the process, but also helps improve quality by preventing the floor concrete from bending.

Furthermore, when demolding the beam members, etc., it is possible to disassemble the beam members after temporarily supporting them at the intermediate portion between them and the support, so there is no danger of them falling, and the work can be carried out safely even in narrow spaces.

Furthermore, the mechanism for sliding the beam member can be made without forming holes or slits in the support body.
The required strength as a support is also unlikely to decrease.

In addition, there are no parts that require the use of a professional carpenter for formwork work such as sawing or nailing, so even an amateur can easily assemble it, and since it is made of metal, there is less damage and it can be reused more often. As a result, the amount of formwork material delivered to the site is reduced, and material transportation costs to and from the site are reduced.
This will save you the trouble of cleaning up the formwork on site.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the floor formwork device of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a longitudinal sectional side view of the same, Fig. 4 is a front view of the main parts of the support used; 5 is an end view taken along line A-A in FIG. 4, FIG. 6 is an end view taken along line B-B in FIG. 4, FIG. 7 is a perspective view of the beam member, and FIG. 8 is a longitudinal sectional front view of the same. FIG. 9 is a partially cutaway perspective view of the panel member, FIG. 10 is a longitudinal sectional side view of the same, FIG. 11 is a front view showing a conventional example, and FIG. 12 is a 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.

Claims (1)

[Claims] 1. Made of a hollow metal body such as an extruded aluminum alloy member, 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 provided here. , consists of a beam member with locking protrusions protruding from the center of the side at appropriate intervals in the longitudinal direction, a frame made of metal such as aluminum alloy, and a plate laid on the top surface of the frame, and the side of the metal frame An engagement hole is formed near the corner of the lower end surface, into which the engagement projection of the beam member engages, and a flange for spacing that protrudes from the upper end is integrally formed on at least the side surface in the longitudinal direction of the frame. The formed panel member as a weir board and the main body as a support can be the same as a normal support, but an upper horizontal flange and an intermediate horizontal flange that serve as a support for the lower surface of the concrete are provided on the top, and the pillar between the flanges is provided. On the outer circumferential surface of the body, a protrusion that rises from the intermediate horizontal flange and horizontally exposes the joint surface between both flanges is formed to bulge out in the vertical direction. A slightly larger protrusion is formed on the upper part, a handle protrudes slightly upward from the outer periphery, a notch of a similar shape slightly larger than the cross-sectional area of the protrusion is formed on the inner periphery, and a rotation prevention protrusion is provided on the bottom surface. A cylindrical body having a protruding annular plate slidably mounted on the outer periphery of the column body in the vertical direction so that the protruding ridges fit into the notches, and having a notch larger than the ridges on the inner periphery. and a beam member receiving part comprising a receiving part projecting left and right from the cylinder and having an upper surface as a receiving surface, and a horizontal flange projecting in the front-rear direction at the upper end of the cylinder, is positioned on the annular plate,
The protrusion fits into the notch and is attached to the column so that it can slide up and down, and the upper end of the protrusion is provided with a protrusion to prevent the metal holder from slipping out. A floor form device characterized in that a metal frame of a panel member serving as a shear plate is removably supported by a locking protrusion on the side of a metal beam member removably installed between the two.