JP3874915B2 - Formwork device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a formwork apparatus that can manufacture concrete products such as U-shaped grooves and concrete blocks.
[0002]
[Prior art]
Conventionally, for example, a U-shaped groove in which a lifting reversal hole is formed at a substantially intermediate position (substantially center of gravity of the U-shaped groove) on both side walls of the U-shaped groove is generally known.
Here, the U-shaped groove made of concrete is heavy and has a weight of 1 ton or more. After the concrete is solidified, it is possible to safely remove the mold from the formwork, and the manufactured U-shaped groove is safe. In particular, it is particularly required to quickly lay it in place.
[0003]
Therefore, Shoji Takami, the inventor or the father of the present inventor, developed and experimented to be able to safely remove the large and heavy U-shaped groove, or to safely and quickly lay the U-shaped groove. At the same time as installing the mold, the lifting reversal hole forming jig can be easily installed in the mold so that a hole for lifting and reversing can be formed on the side wall of the U-shaped groove. The invention can be easily removed from the mold, and when the U-shaped groove is laid, the invention has the effect of being able to lay very simply, quickly and safely using the lifting reversal hole (U with lifting reversal hole). We have produced many gutters and formwork devices.
[0004]
Here, the reason why the U-shaped groove must be lifted and reversed is described. First, when removing the U-shaped groove, the U-shaped groove is in a state opposite to that in use, that is, in an inverted U shape. It is taken out in a laid state.
And generally manufactured U-shaped groove | channel is accommodated in a storage place in this reverse U-shaped state. This is because the storage stability is higher in this state, and the storage efficiency is remarkably excellent because the storage is stacked in a plurality of stages.
[0005]
Therefore, normally, when the U-shaped groove is transported to the laying site or temporarily placed on the laying site, the U-shaped groove is placed in an inverted U-shape and placed in a plurality of stages.
However, when actually laying the U-shaped groove, the U-shaped groove must be raised and installed. In the past, many workers took a long time to change the U-shaped groove from the inverted U-shaped to the U-shaped. Then, it takes a long time to carry to the installation site, and fine adjustment of the installation over a long period of time (not connecting only one U-shaped groove, but connecting multiple U-shaped grooves 1 together) The U-shaped groove was to be laid.
[0006]
Here, since the present inventor and the father of the present inventor have invented such an innovative U-shaped groove with lifting reversal holes and its formwork device, many concrete contractors or construction companies have dramatically increased their working hours. The number of accidents related to laying work and the like has been dramatically reduced.
That is, if a member for forming a lifting reversal hole is attached in advance to a mold apparatus for manufacturing a U-shaped groove, and concrete is filled and solidified in that state, the U-shaped groove with the lifting reversal hole is automatically provided. This is because it is possible to manufacture from the mold using this hole, and from the laying work, everything can be performed safely, quickly and at a very low cost.
[0007]
Therefore, the total number of patents obtained by the inventor and Shoji Takami in this field exceeded 100.
Here, a conventional formwork apparatus capable of forming a concrete U-shaped groove with a lifting reversal hole has a through-hole formed in the outer mold in advance, and a support rod is inserted through the through-hole to lift it inside the formwork. The reversal hole forming member is locked to the support rod, and the mold is filled with concrete from that state.
[0008]
[Problems to be solved by the invention]
However, in such a conventional formwork apparatus, a through hole is formed in the outer formwork. Therefore, even if the hole portion is blocked when the concrete is filled, the concrete is removed from the through hole for many years. May leak.
In addition, for concrete products with lifting holes, when it is desired to slightly change the position of the lifting reversal hole to be formed, it is necessary to prepare a new outer mold and newly form a hole in the outer mold.
[0009]
Further, when forming a substantially rectangular concrete block, it is necessary to make a hole in the mold even when a lifting hole is provided on the upper surface.
Thus, the present invention was devised in order to solve the problems of the conventional formwork apparatus, and the concrete does not leak from the through holes formed in the outer formwork, and the lifting reversal holes to be formed are not formed. When you want to change the position slightly, there is no need to prepare an outer formwork with new through holes, and you can easily change the position of the hole. It is an object of the present invention to provide a formwork device that can form a concrete block with a lifting hole without making a hole in a bottom formwork even when a hole is provided.
[0010]
[Means for Solving the Problems]
The formwork apparatus according to the present invention is
An inner mold having a substantially rectangular mountain shape,
A pair of outer molds in the form of a plate installed at a predetermined interval from the inner mold frame;
An anchor member having a permanent magnet that can be fixed inside the outer mold frame at a substantially central position; a male screw portion protruding from the fixing portion; and an anchor member having a lifting hole in which a female screw that can be screwed into the male screw portion is threaded. A hole forming member;
Have
The hole forming member is fixed to a predetermined position inside the outer mold,
After the concrete filled in the mold is solidified, the mold can be removed from the mold, and the rotating part for rotating the male screw part provided on the bonding surface side of the fixed part can be twisted to remove the fixed part from the concrete product. It is characterized by
Or
Formwork,
A hole forming member provided with a fixing portion made of a permanent magnet that can be fixed to the inside of the mold, a male screw portion protruding from the fixing portion, and an anchor member having a lifting hole screwed with a female screw that can be screwed into the male screw portion When,
Have
The hole forming member is fixed to a predetermined position inside the mold,
After the concrete filled in the mold is solidified, the mold can be removed from the mold, and the rotating part for rotating the male screw part provided on the bonding surface side of the fixed part can be twisted to remove the fixed part from the concrete product. It is characterized by that.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
A formwork apparatus according to the present invention will be described below according to an embodiment shown in the drawings.
In FIG. 5, reference numeral 1 denotes an inner mold.
The inner mold 1 is formed in a substantially rectangular mountain shape as in the prior art. Usually, the inner mold 1 is connected to the bottom mold 14 at a substantially right angle.
[0012]
Next, reference numeral 2 denotes an outer mold.
A pair of the outer molds 2 is installed at a predetermined interval from the inner mold 1, and the shape of the outer molds 2 is a flat plate shape, and the upper ends are bent inward (see FIG. 5). .
Next, in FIGS. 1 to 4, reference numeral 3 denotes a hole forming member. The hole forming member 3 includes a fixing portion 4, a male screw portion 5 protruding from the fixing portion 4, and an anchor member 7 having a lifting hole 6 in which a female screw screwed into the male screw portion 5 is screwed. .
[0013]
The fixing part 4 is formed of a permanent magnet having a main body with a strong magnetic force, and is covered with a cover 17 having a metal bowl shape except for the adhesive surface.
Further, as can be understood from FIGS. 1 and 2, a male screw portion 5 protrudes outward from the center of the surface opposite to the bonding surface of the fixing portion 4.
As shown in FIG. 1, the male screw portion 5 has a rotation bulging portion 9 that loosely fits in the fixing portion 4. The rotary bulge 9 is formed integrally with the protruding male screw 8 and holds the protruding male screw 8 in a rotatable manner.
[0014]
Further, the rotary bulge portion 9 is provided with a recess 10 for twisting. As can be understood from FIG. 3, a removal member 13 such as a hexagon wrench is fitted into the recess 10 and rotated to rotate the fixing portion 4. It is configured so that it can be removed from the concrete product.
Next, the anchor member 7 includes a hole forming main body 11 having a lifting hole 6 in which a female screw that is screwed into the male screw portion 5 is threaded, and a tail-shaped anchor 12 extending from the hole forming main body 11. Configured.
[0015]
Here, the usage state of the present invention will be described. First, the hole forming member 3 is sucked and fixed to the inner side of the substantially center position of the outer mold 2 (see FIGS. 1 and 5). At this time, since the attachment is performed by a magnet, the position can be easily changed.
After setting as shown in FIG. 5, the concrete is filled into a mold and solidified.
After the solidification of the concrete, the mold is removed from the mold. As can be understood from FIG. 3, the hole forming member 3 is embedded and fixed in the concrete, and the fixing part 4 also resists the adsorption magnetic force of the outer mold 2. Leave from the inside.
[0016]
Thereafter, the removal member 13 or the like is fitted into the recess 10 and rotated to remove the fixing portion 4 from the hole forming member 3. Specifically, as shown in FIG. 3, a hexagon wrench is fitted into the recess 10 and twisted, and only the fixing portion 4 is twisted.
When the concrete member 18 is lifted, the screw-type insertion rod 15 may be screwed into the lifting hole 6 as shown in FIGS.
[0017]
FIG. 6 shows another embodiment of the present invention in which the hole forming member 3 is adsorbed to a predetermined position of the bottom mold 14.
From this state, concrete is filled and demolded after solidification.
Then, the fixing portion 4 is removed by performing the same operation as in FIG.
Thereafter, the concrete block 19 can be lifted upward as shown in FIG.
[0018]
【The invention's effect】
The present invention has the above configuration.
According to the formwork apparatus according to the present invention, when the concrete does not leak from the through hole formed in the formwork and it is desired to slightly change the position of the lifting hole to be formed, a new through hole is formed. It is not necessary to prepare a reworked formwork, the hole position can be easily changed, and when forming a lifting hole on this top surface when forming a substantially rectangular concrete block, a hole is made in the formwork It is possible to make a concrete block with a lifting hole without any problem, and it can be installed in a mold easily and quickly. Moreover, it has excellent workability and can provide a high-quality concrete product with a lifting hole.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view showing a use state (No. 1) of a formwork apparatus according to the present invention.
FIG. 2 is a schematic configuration explanatory view showing a schematic configuration of a hole forming member.
FIG. 3 is a schematic sectional view showing a use state (No. 2) of the formwork apparatus according to the present invention.
FIG. 4 is a schematic cross-sectional view showing a use state (part 1) of a concrete product with lifting holes.
FIG. 5 is a schematic cross-sectional view showing a usage state of a U-groove formwork apparatus with lifting holes.
FIG. 6 is a schematic cross-sectional view showing a use state of a concrete block formwork apparatus with lifting holes.
FIG. 7 is a configuration explanatory view showing a lifting state of a U-shaped groove with lifting reversal holes.
FIG. 8 is a configuration explanatory view showing a lifting state of a concrete block with lifting holes.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inner mold frame 2 Outer mold frame 3 Hole formation member 4 Adhering part 5 Male thread part 6 Lifting hole 7 in which the female thread was screwed 7 Anchor member 8 Projection male screw 9 Rotating bulging part 10 Recess 11 Hole formation main body 12 Anchor 13 Detachment member 14 Bottom mold 15 Threaded insertion rod 16 Permanent magnet 17 Cover 18 Concrete member 19 Concrete block

Claims (2)

An inner mold having a substantially rectangular mountain shape,
A pair of outer molds in the form of a plate installed at a predetermined interval from the inner mold frame;
An anchor member having a permanent magnet that can be fixed inside the outer mold frame at a substantially central position; a male screw portion protruding from the fixing portion; and an anchor member having a lifting hole in which a female screw that can be screwed into the male screw portion is threaded. A hole forming member;
Have
Adsorb the hole forming member to a predetermined position inside the outer mold,
After the concrete filled in the mold is solidified, the mold can be removed from the mold, and the rotating part for rotating the male screw part provided on the bonding surface side of the fixed part can be twisted to remove the fixed part from the concrete product. A formwork apparatus characterized by that. Formwork,
A hole forming member provided with a fixing portion made of a permanent magnet that can be fixed to the inside of the mold, a male screw portion protruding from the fixing portion, and an anchor member having a lifting hole screwed with a female screw that can be screwed into the male screw portion When,
Have
The hole forming member is fixed to a predetermined position inside the mold,
After the concrete filled in the mold is solidified, the mold can be removed from the mold, and the rotating part for rotating the male screw part provided on the bonding surface side of the fixed part can be twisted to remove the fixed part from the concrete product. A formwork apparatus characterized by that.

Images