JP2000343515A - Frame device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a lifting turning-over hole forming member simply and promptly in a frame, to prevent the deformation or breakage of a support rod during the demolding of the frame, and to form a high quality U-shaped groove. SOLUTION: A frame device has an approximately rectangular crest-shaped inside frame 3, a pair of plate-shaped outside frames 5, 5 which are installed at a prescribed distance from the inside frame 3 and can expand outside with the lower end part made a rotary shaft, and a through hole formed in the outside frame 5. A lifting turning-over hole forming member 11 having a support rod 14 having a base part inserted from the inside of the outside frame 5 into the through-hole of the outside frame 5 and a protruding engaged body 13 which is continuous with the base part and protrudes toward the inside of the frame device, a disk-shaped attraction body 15 which is installed at boundary position between the base part and the body 13 and has an outside frame inner surface attraction magnet fitted to an outside frame inner surface, and a separation stop member 19 connected to the tip of the base part and a cylindrical hole forming member 7 which is engaged/held with/by the body 13 of the member 11 installed in the frame are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork apparatus for manufacturing a U-shaped groove having a lifting inverted hole in which a lifting inverted hole is formed substantially at the center of both side walls of a U-shaped groove.

[0002]

2. Description of the Related Art Conventionally, a U-shaped groove 24 in which a lifting inverted hole 2 is formed at a substantially middle position (substantially the center of gravity of the U-shaped groove 24) on both side walls of the U-shaped groove 24 has been generally manufactured and widely used. I have. The U-shaped groove 24 is generally heavy, and if it is heavy, it can weigh 1 ton or more. And the U-shaped groove 2
In the manufacturing process 4 and the laying process 4, safe and quick work is required.

That is, after the concrete has been solidified in the mold, not only can the mold be removed from the mold safely, but also the manufactured U-shaped groove 24 can be safely and quickly moved to a predetermined location. In addition, it is particularly required to safely and quickly transport and lay at a predetermined laying place. Therefore, the present inventor or his father, Shoji Takami et al., Performed safe removal of the large and heavy U-shaped groove 24, or safe, quick transportation and laying work of the U-shaped groove 24. In order to produce the U-shaped groove 24 with the lifting inverted hole, the member for forming the lifting inverted hole can be easily installed in the formwork, and the concrete is solidified. After that, the mold can be easily removed from the mold using the lifting inverted hole 2, and furthermore, when the U-shaped groove 24 is laid, it is extremely easily, quickly and safely laid using the lifting inverted hole 2. Many inventions that can be made (a U-shaped groove with a lifting inverted hole and a formwork device thereof) have been produced.

Here, the reason why the U-shaped groove 24 needs to be lifted and turned upside down will be described. First, when the U-shaped groove 24 is removed from the mold, the U-shaped groove 24 is opposite to the one in use. , That is, in a state of being laid in an inverted U-shape (see FIGS. 1 and 2). Then, the generally manufactured U-shaped groove 24 is stored in a storage place in this inverted U-shaped state.
This is because, in this state, the storage stability is higher, and the storage efficiency is remarkably excellent since the storage is performed in a plurality of stages.

[0005] Therefore, when the U-shaped groove 24 is usually transported to the laying site and temporarily placed on the laying site, the U-shaped groove 24 is laid in an inverted U-shape and is placed in a plurality of layers. However, when actually laying the U-shaped groove 24 at the site, the U-shaped groove 24 must be raised and installed, and conventionally, many workers take the U-shaped groove 24 from the inverted U-shaped state over a long time. Raise it in a U-shaped state, carry it over a long time to the laying place, and take a long time to fine-tune the laying (do not lay a single U-shaped groove, but connect multiple U-shaped grooves 24 Fine adjustment of the connection is required because the
Was to be laid.

Here, the present inventors have invented the revolutionary U-shaped groove 24 with a reversing lifting hole as described above and the formwork device therefor, so that many concrete contractors or builders have dramatically reduced the working time. And the number of accidents involved in laying work etc. was dramatically reduced. That is, if a lifting reversing hole forming member for forming the lifting reversing hole 2 is previously installed in the formwork apparatus 1 for manufacturing the U-shaped groove 24, and concrete is filled and solidified in this state, the concrete is automatically lifted. This is because a U-shaped groove with a reversing hole 2 can be manufactured, and the lifting and reversing hole 2 can be used to remove the mold from the formwork and to lay the work safely, quickly, and at extremely low cost. .

Therefore, the total number of patents and utility model registrations of the present inventors in this field exceeded 100. Here, the features of the related invention made by the present inventors up to this point are as follows. First, the lifting inverted hole forming member is formed of metal. Since the U-shaped groove 24 having a weight of several hundred kilograms or more is lifted at two places for convenience and turned over, the hole for lifting and turning over will be damaged unless it is made of a rigid material such as metal. It is.

[0008] Second, an anchor portion is attached to a substantially middle position of the metal pipe-shaped hole forming portion. If the anchor portion is not configured as extending outward as described above, the lifting inversion hole forming member is buried in concrete and shipped as a U-shaped groove product, and during the lifting and inversion operation, the lifting inversion hole forming member is This is because there is a risk that the lifting and reversing tool inserted into the hole may pull the lifting tool.

Third, the lifting inversion hole 3 is formed as a penetrating type penetrating the side wall of the U-shaped groove. Normal,
In the U-shaped groove, the lifting and reversing tool is inserted into the outer lifting and reversing hole 2 to be lifted and turned over. In some cases, the work cannot be performed by inserting a lifting and reversing tool into the hole outside the U-shaped groove.

In such a case, a hole is also formed inside the U-shaped groove (therefore, the hole is usually formed as a penetrating hole penetrating the side wall of the U-shaped groove. The lifting work is inserted into this hole to perform the laying work and fine adjustment thereof.

[0011]

However, the conventional formwork apparatus has the following problems. First, to give an example of a conventionally used form device, a long nut provided with a female screw hole is fixed to the outside of the outer form so as to communicate with the drilled hole (FIG. The high nut may be fixed via a U-shaped member as shown in FIG. 6).
A long bolt is screwed into the female screw hole in the long nut from the outside, the tip of the long bolt is protruded into the formwork device, and the tip of the long bolt is hung up and covered with a reversing hole forming member. I was For this reason, such installation is extremely troublesome and troublesome for a worker at the site.

That is, at the time of molding the formwork device, the long bolt must be twisted and screwed into the female screw hole of the long nut, and projected into the formwork. This was because the long bolt had to be twisted and removed from the long nut of the outer formwork. Further, when the mold is removed from the concrete after the concrete is solidified, when the outer mold is expanded to both outer sides, the long bolt may be fixed to the outer mold even when the outer mold is expanded.

At this time, there has been a problem that the long bolt cannot be smoothly detached from the lifting and reversing hole forming member, and is bent and deformed or broken during the demolding operation. That is, when the long bolt is pulled out from the mold, it is most preferable to pull out the parallel bolt with respect to the inverted hole forming member so as not to apply extra force to the support rod.

Therefore, usually, the long bolt is previously pulled out and twisted. However, there is a case where the outer formwork is expanded without removing the long bolts, as it is troublesome in the actual work on site. In this case, since the outer formwork is expanded outward at the lower end thereof with the intersection portion, which is the connection part with the bottom formwork, as a rotation shaft, the sparrow bolt is being pulled out from the lifting inversion hole forming member. , And receives stress from the lifting inverted hole forming member.

As a result, when the stress exceeds the allowable range of the bending stress of the long bolt, deformation or breakage occurs, and the bolt is bent or broken at the time of demolding. When an abnormality occurs in the long bolt as described above, the work must be temporarily stopped and the long bolt must be repaired or replaced with a new one, which is preferable in terms of labor and cost. Absent.

In particular, when the lifting reversal hole is located below the substantially middle position, the stress applied to the long bolt during the demolding operation is considerably greater than that at the upper side, so that the probability of breakage increases. Thus, the present invention has been conceived in order to solve the above-mentioned problem, and the installation of the lifting inverted hole forming member in the mold can be performed easily and quickly, and the support rod is deformed when the mold is removed from the mold. Or without damage
It is an object of the present invention to provide a mold device capable of forming a high-quality U-shaped groove.

[0017]

A formwork apparatus according to the present invention is provided with an inner formwork having a substantially rectangular mountain shape and a predetermined distance from the inner formwork. A pair of outer molds having a pair of plate-like outer molds that can be opened outward, and a through hole provided in the outer molds. A holding rod having a base inserted through the through-hole and a protruding fitting that is continuous with the base and protruding toward the inside of the formwork device; and a holding bar provided at a boundary between the base and the protruding fitting. A lifting hole forming member holding member including a disk-shaped attracting body having an outer mold inner surface attracting magnet fixed to an inner surface of a mold, a detachable member connected to the base end, and the lifting hole forming portion And a cylindrical hole forming member which is held by being fitted to the projecting fitted body of the holding member, and which is installed inside the formwork. And butterflies.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a formwork apparatus 1 according to the present invention will be described with reference to an embodiment shown in the drawings. In the figure, reference numeral 3 indicates an inner mold. As shown in FIGS. 1 and 2, the inner frame 3 is formed in a substantially rectangular mountain shape as in the conventional case. Usually, the inner mold 3 is connected to the bottom mold 4 at a substantially right angle.

Next, reference numeral 5 denotes an outer formwork. Outer formwork 5
Are installed in a pair at a predetermined interval from the inner mold frame 3 and have a substantially flat plate shape, and upper ends thereof are each bent inward. The outer mold 5 is shown in FIG.
As can be understood from FIG. 2, at the lower end side, a crossing portion, which is a connection portion with the bottom mold 4, can be opened outward as a rotation shaft portion 6.

Further, a through-hole 17 for forming a lifting / reversing hole used for forming the lifting / reversing hole 2 is formed at a substantially central position of the outer mold frame 5. Next, in the figure, reference numeral 7 denotes a lifting inverted hole forming member. The lifting inversion forming member 7 includes a hole forming portion 8 which is generally formed in a cylindrical shape by a metal pipe, and a ring-shaped anchor portion which projects substantially perpendicularly to a substantially intermediate position in the outer peripheral longitudinal direction of the hole forming portion 8. 9 is formed.

Reference numeral 10 denotes a cap member. The cap member 10 is formed of a flexible member such as a plastic member, one end of which is closed, and the other end of which is formed as a substantially cylindrical member having a lid shape. Is formed. The inside diameter of the cap member 10 is set to the inside diameter with which the outer shape of the hole forming portion 8 fits, and the width of this fitting is configured so that the fitting width can be adjusted by deep fitting.

Reference numeral 11 denotes a lifting and reversing hole forming member holding member. The lifting and reversing hole forming member holding member 11 according to the present invention comprises a base 12 and a projecting fitting 13 linearly continuous with the base 12. It comprises a holding rod 14, a disc-shaped adsorbent 15, and a retaining member 16. As can be understood from FIGS. 3 and 4, the base 12 of the holding rod 14 is inserted from the inside of the outer mold frame 5 into the through hole 17 for forming a lifting inverted hole of the outer mold frame 5. Projecting fitting 1
Numeral 3 is arranged to protrude substantially horizontally from the outer mold frame 15 toward the inner mold frame 13 side.

At the boundary between the base 12 and the projecting fitting 13, there is provided a disk-shaped attracting body 15 formed of a magnet attracting to the inner surface of the outer mold frame 5. At the tip of the base 12, a detachment prevention member 1 comprising a wire-shaped string portion 18 and a detachment prevention portion 19 provided at the end of the string portion 18.
6 are connected. As described above, as shown in FIG.
The lifting inverted hole forming member 7 is covered and held by the projecting fitting 13 of the lifting inverted hole forming member holding member 11.

Next, a method of manufacturing the U-shaped groove 24 in the formwork apparatus according to one embodiment of the present invention will be described. At predetermined positions of the pair of outer mold frames 5 and 5 (locations that become the positions of the center of gravity of the U-shaped groove 24 to be manufactured), the above-described through holes 17 for forming the inverted lifting holes are formed in advance, and The through holes 20 are formed so as to communicate with the through holes 17 for forming the lifting inverted holes.
Is fixed to the outside of the outer mold frames 5 and 5 (see FIG. 4).

Conventionally, however, as can be understood from FIG. 6, for example, long bolts 22, 22 are connected to the female thread portions of the high nuts 23, 23 provided in connection with the through holes 20 of the U-shaped member 21, and the outside. Through holes 17 for forming inverted lifting holes of the mold frames 5 and 5,
17 and the long bolts 22 and
22 was protruded. Then, the elongate bolts 22 protruding into the formwork are mounted on the inverted reversing hole forming members 7 from above, respectively.

However, conventionally, the distal ends of the long bolts 22, 22 are inserted through the female threads of the high nuts 23, the through-holes 17, 17 for forming the lifting inversion holes of the outer mold frames 5, 5, and the heights thereof are high. Protruding the long bolts 22, 22 into the formwork while screwing the female threads of the nuts 23, 23 requires a considerable amount of time for screwing in, as described above. The screwing work was troublesome and unpleasant. The same applies to the demolding work after concrete solidification.

Therefore, in the present invention, as shown in FIG.
A lifting inverted hole forming member holding member 11 having a holding rod 14 having a base portion 12 fitted into 7 and a substantially cylindrical projecting fitting body 13 projecting toward the inside of the mold is prepared. The holding rod 14 is provided with the base 12 and the projecting fitting 13.
A disc-shaped adsorbent 15 having a magnet adsorbing to the outer mold frame 5 is provided on a surface facing the inner surface of the outer mold frame 5 at a boundary position between the two.

Therefore, it is possible to easily install the holding rod 14 in the mold using the disc-shaped adsorbent 15, and to easily cover the holding rod 14 with the inverted turning hole forming member 7. . Then, as shown in FIG. 1, concrete is poured into a formwork, and after curing for a predetermined time, a demolding operation is performed. However, as described above, this demolding operation was conventionally troublesome.

In the present invention, as can be understood from FIG. 2, the outer mold 5 is expanded outward and demolding is performed. At this time, the disc-shaped adsorbent adsorbed on the inner surface of the outer mold 5 is used. Fifteen magnets are detached from the inner surface, and only the protruding fitting body 13 of the lifting / reversing hole forming member holding member 11 remains smooth from the lifting / reversing hole forming member 7 through the lifting / reversing hole 2 of the U-shaped groove 24 as a solidified concrete product. Can be overtaken.

Here, there is no need to twist and remove the long bolt as in the prior art. This is because the projecting fitting 13 can be easily lifted up from the reversing hole 2 simply by expanding the outer mold frame 5 outward. In addition, the lifting inverted hole forming member holding member 11 is locked to the outer mold frame 5 by the detachment preventing member 16, and there is no risk of detachment and loss.

Then, at the time of next use, if the disk-shaped suction body 15 is again sucked to the inner surface of the outer mold frame 5, the lifting inverted hole forming member holding member 11 can be easily installed in the mold frame. It should be noted that the lifting inverted hole forming member holding member 11 according to the present invention has an advantage that it can be used for a mold apparatus in which the U-shaped member 21 is not fixed to the outside of the outer mold frame.

In this case, a detachment preventing member 16 having a detachment preventing portion 19 having a larger outer diameter than the through hole 17 for forming the inverted lifting hole of the outer mold frame 5 may be used.

[0033]

The present invention has the above configuration. And
ADVANTAGE OF THE INVENTION According to the formwork apparatus which concerns on this invention, the installation of the lifting reversal hole formation member in a formwork can be performed simply and quickly, and also it is excellent in workability and can provide a high quality concrete U-shaped groove.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a use state (No. 1) of a formwork device according to the present invention.

FIG. 2 is a schematic sectional view showing a use state (No. 2) of the formwork device according to the present invention.

FIG. 3 is a schematic enlarged sectional view showing a use state (No. 3) of the formwork device according to the present invention.

FIG. 4 is a schematic enlarged sectional view showing a use state (No. 4) of the formwork device according to the present invention.

FIG. 5 is an explanatory view of a configuration of a U-shaped groove with a lifting inverted hole according to the present invention.

FIG. 6 is a schematic configuration explanatory view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Form device 2 Lifting reversing hole 3 Inner frame 4 Bottom mold 5 Outer frame 6 Rotating shaft part 7 Lifting reversing hole forming member 8 Hole forming part 9 Anchor part 10 Cap member 11 Lifting reversing hole forming member holding member 12 Base DESCRIPTION OF SYMBOLS 13 Projecting fitting object 14 Holding rod 15 Disc-shaped adsorption body 16 Detachment prevention member 17 Through hole for lifting and inverting hole formation 18 String part 19 Detachment prevention part 20 Through hole 21 U-shaped member 22 Long bolt 23 High nut 24 U-shaped groove

Claims (1)

[Claims] An inner mold having a substantially rectangular mountain shape, and a pair of plate-shaped members which are installed at a predetermined distance from the inner mold and are capable of expanding outward with a lower end serving as a rotation axis. And a through hole provided in the outer mold frame. A base device that penetrates through the through hole of the outer mold frame from the inside of the outer mold frame, and is continuous with the base portion. A holding rod having a protruding fitting body protruding toward the inside of the forming mold apparatus, and an outer mold inner surface attracting magnet provided at a boundary position between the base and the protruding fitting body and fixed to the inner surface of the outer mold frame. A lifting hole forming member holding member, comprising: a disk-shaped suction body having: a lifting stopper member connected to the base end; And a cylindrical hole forming member installed inside the formwork.