JP2004211488A - Mold bearing implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate disassembling work even when a concrete mold tightening rod is tightened excessively for protecting sheathing boards and also for preventing the catch of the concrete mold tightening rod. <P>SOLUTION: In a mold bearing implement 1 comprising a combination of a flat head cone body 2 made of a plastic material manufactured as a separate body and a steel collar 3a at a shaft head which are formed into one united body, a female screw 3c connected to a separator 20 coming to a drum portion 3b through a collar 3a at the shaft head side is provided, and a shaft body 3 equipped with a male thread portion 3e screwed to a concrete mold tightening rod 13 and a hexagonal portion 3d as a portion for hanging a box spanner for disassembling from the concrete body at the tip continuing from the drum portion 3b are all combined together; the position of the tip of a hexagonal body 3d at the tip continuing to the drum portion 3b has a length corresponding to the plate thickness of a weir plate from the end of the large diameter side of the flat head cone body 2, and a projection 3f is formed at the outer periphery of the hexagonal body 3d. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a form support for constructing a concrete frame, and can easily and reliably assemble the form to construct a concrete building or civil structure at a site, and can use the form repeatedly. In addition, the present invention relates to a form supporter that can easily disassemble the form.
[0002]
[Prior art]
In the past, a shaft body of a form supporter has been disclosed in which, in order to prevent damage to a weir plate, the core metal comes out of a truncated conical shape of a polygonal cylindrical body according to the thickness of the weir plate. (For example, Patent Documents 1 and 2). However, at the time, this core metal was manufactured and assembled separately because there was no header processing machine. That is, as shown in FIGS. 7 and 8, a separate screw 102 is screwed into the polygonal cylinder 101 of the metal core 100, and the screw 102 is caulked so as not to be separated from the polygonal cylinder 101 and integrated. It was manufactured by the method of becoming. Therefore, if there is a defect in the crimping process, there is a problem that when the concrete formwork tightening rod is removed, the screw 102 comes off while the concrete formwork tightening rod is being bitten. The production was troublesome.
[0003]
In addition, there is disclosed a structure in which a pushing body for securely fixing to a weir plate is provided so as not to run idle when a concrete form tightening rod is attached (for example, Patent Document 3). The central axis is made of an integral body that is plastically worked from the head to the screw by a header processing machine (introduced in the 1960s). In addition, this method is excellent in workability and can be used even now, since it can perform processing other than the internal thread and the external thread with one machine.
[0004]
However, as shown in FIG. 9 and FIG. 10, when the male screw 110 is inserted into the weir plate 111 and screwed into the female screw 113 of the concrete form tightening rod 112 and overtightened, the length of the square push body becomes longer. Since the female screw 113 of the concrete form clamping rod 112 is screwed in because the thickness is shorter than the thickness of the weir plate 111, the flange 114 cuts into the weir plate 111 and damages the weir plate 111, and the female screw 113 of the concrete form tightening rod 112 Since the effective length is shorter than the male screw 110, the concrete form tightening rod 112 is excessively tightened, thereby causing biting between the female screw 113 and the concrete form when the form is dismantled after placing concrete. When the tightening rod 112 is rotated in the reverse direction to release the screwing with the male screw 110, the screwing portion between the female screw 117 and the male screw 118 on the separator 116 side is The edge, the portion thereof is out, the barrier plate 111 remains separator terminals and concrete formwork tightening rod 112 is connected, there is a problem that dismantling will not proceed.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 37-28931 (page 1, FIG. 1 to FIG. 5)
[0006]
[Patent Document 2]
Japanese Utility Model Publication No. 39-1548 (page 1, FIG. 1 and FIG. 2)
[0007]
[Patent Document 3]
Japanese Utility Model Publication No. 52-4750 (pages 1 and 2, FIGS. 1 to 5)
[0008]
[Problems to be solved by the invention]
Such a problem that the concrete form tightening rod 112 is bitten with the male screw 110 due to excessive tightening is also caused in the end portion of the polygonal cylindrical body 101 in FIGS. However, there is a problem in that the bite bites between the front end flange piece 104 of the tightening rod 103 and the disassembling operation similar to the above does not proceed.
[0009]
In recent years, in order to facilitate the assembly work, the use of an electric tool to connect screws has been increasing. The power tools used in these tools have a high ability to be tightened in order to obtain workability, and therefore tend to be overtightened, and in that sense, the problem of inability to disassemble is significant.
[0010]
In addition, in the past, the connection between the core metal and the truncated conical body was made by attaching the core metal to a resin molding die and filling the resin into the mold to integrate them, but from the viewpoint of workability, Since the core metal and the resin were manufactured separately and the method of assembling the core metal by press-fitting into the center hole of the resin was changed later, a flange was provided on the head of the core metal as in Patent Document 3, and to date. I have.
[0011]
Therefore, the present invention prevents over-tightening for protecting the dam and prevents the concrete form-tightening rod from biting even when the concrete form-tightening rod is strongly tightened, thereby facilitating dismantling work. It is an object of the present invention to provide a form supporting device capable of improving the performance.
[0012]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, the present invention is configured as follows.
[0013]
The invention according to claim 1 includes a resin-made frustoconical body manufactured separately.
Provided with a flange on the shaft head side that is integrally processed with iron, provided with a female screw connected to a separator that penetrates the flange on the shaft head side and reaches the trunk, and dismantles from the concrete body at the tip connected to the trunk. A shaft body having a hexagonal portion which is a box spanner hanging portion for the male screw portion screwed to the concrete form tightening rod,
In the form support by the combination of
The position of the tip of the hexagonal part of the tip connected to the trunk is a length corresponding to the thickness of the weir plate from the large-diameter end of the truncated conical body, and on the outer peripheral side of the end face of the hexagonal part. , A form support provided with projections.
[0014]
According to the first aspect of the present invention, the position of the tip of the hexagonal portion at the tip connected to the trunk is a length corresponding to the thickness of the weir plate from the large-diameter end of the truncated cone, A projection is provided on the outer peripheral side of the end face of the hexagonal part, so that even when the concrete form-tightening rod is screwed in firmly (by hand tightening or using an electric tool), the protrusion contacts the flange of the concrete form-tightening rod. Since the damper plate is not in contact with the damper plate, the damper plate is prevented from being damaged, and the contact of the concrete form clamping rod with the shaft becomes a projection. At the time of removing the concrete form clamping rod, the edge is cut earlier than the screwing of the form support and the separator side, the detachment becomes possible, and the form can be dismantled according to the procedure.
[0015]
According to a second aspect of the present invention, there is provided the form support according to the first aspect, wherein a protrusion is provided at a flange end on the shaft head side.
[0016]
According to the second aspect of the present invention, since the protrusion is provided at the flange end on the shaft head side, when the concrete form clamping rod is to be removed at the time of dismantling the form, the flange is formed. The projections resist the concrete, and the screwing of the male thread of the form support and the female thread of the concrete form tightening rod is released first, so that the form can be dismantled according to the procedure.
[0017]
According to a third aspect of the present invention, the thickness of the body is equal to the diameter of the mounting hole of the weir plate, and the body has a length that is slightly inserted into the mounting hole of the weir plate. The form support according to claim 1 or 2, wherein:
[0018]
According to the third aspect of the present invention, since the thickness of the body is equal to the diameter of the mounting hole of the weir plate and the length of the body is slightly inserted into the mounting hole of the weir plate, When assembling the formwork, after inserting the formwork support from the inside of the formwork into the weir plate, when turning the concrete formwork tightening rod from the outside of the formwork while screwing it in, the body and mounting holes will come into tight contact. Since it is difficult to rotate around, assembly is easy.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a form supporter of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to this embodiment.
[0020]
1 is a front view of a form support, FIG. 2 is a left side view of the form support, FIG. 3 is a right side view of the form support, FIG. 4 is a sectional view of the form support, and FIG. FIG. 6 is a view showing a use state of the frame support, and FIG. 6 is an enlarged view of the form support in the used state.
[0021]
As shown in FIGS. 1 to 4, a form support 1 of this embodiment is formed by combining a frustoconical body 2 and a shaft 3.
[0022]
The truncated conical body 2 is made of resin and manufactured separately from the shaft body 3, and is provided with an assembling shaft hole 2a, a small-diameter concave portion 2b connected to one of the assembling shaft holes 2a, and an assembling shaft hole 2a. And a large-diameter concave portion 2c continuous with the other. A plurality of grooves 2a1 are formed in the assembly shaft hole 2a at equal intervals in the axial direction, so that the resistance in the rotation direction is increased in a state of being assembled with the shaft body 3. A rib 2c1 is formed in the large-diameter concave portion 2c in the axial direction so as to increase the strength of the truncated conical body 2.
[0023]
The shaft body 3 is made of iron and is integrally processed, and is provided with a flange 3a on the shaft head side, and is provided with a female screw 3c connected to the separator 20 extending through the flange 3a and reaching the body portion 3b on the shaft head side. A hexagonal portion 3d, which is a box spanner hook for dismantling from the concrete body, and a male screw portion 3e screwed to the concrete form tightening rod 13 are provided at the end connected to the portion 3b.
[0024]
The form support 1 is inserted into the small-diameter concave portion 2b of the frusto-conical body 2 from the male screw portion 3e side of the shaft body 3 and combined. Are press-fitted and integrally combined. The flange 3a of the shaft 3 is located in the small-diameter recess 2b of the truncated conical body 2, and the hexagonal portion 3d side of the trunk 3b is located in the large-diameter recess 2c.
[0025]
A projection 3f is provided at the tip of a hexagonal portion 3d, which is a tip that is continuous with the body 3b of the shaft body 3, and the position of the projection 3f is determined from the large-diameter end of the truncated conical body 2 to the weir plate 10 And the length L according to the plate thickness t. The projection 3f may be a continuous projection that projects in a ring shape or a hemispherical or radial projection that partially projects. In short, the contact area with the flange 13b side of the concrete form clamping rod 13 is reduced. Any size that is small and does not deform even when strongly tightened may be used.
[0026]
At the flange end on the shaft head side of the shaft body 3, a projection 3g is provided obliquely radially. The projection 3g may be a semi-spherical or radial projection partially projecting, or may be an elliptical or square continuous projection other than the discontinuous projection projecting obliquely radially. Any shape can be used as long as it is resistant to time.
[0027]
The thickness D of the body 3 b is equal to the diameter of the mounting hole 12 of the dam plate 10, and the length of the body 3 b is slightly inserted into the mounting hole 12 of the dam plate 10.
[0028]
As shown in FIGS. 5 and 6, the form support 1 is used to assemble the weir plate 10 to construct a concrete structure at the site. First, the weir plate 10 made of veneer plywood is placed at a desired place. Arrange them facing each other.
[0029]
Next, the assembling of the formwork will be described. If the dam plates 10 on both sides are arranged at the same time at the same time, the separator to be inserted therein and the two form support members are long, so that they cannot be inserted. Although one of the plates is arranged, the separator and two form supports are assembled, but the male screw portion 3e of the form support 1 is inserted into the mounting hole 12 of the dam plate 10 and the concrete form tightening rod 13 Is screwed and fixed, and while holding the vertical end 23 and the horizontal end 24, the washer 21 is fixed along the horizontal end 24 by tightening the nut 22 to complete the assembly on one side.
[0030]
Next, a hole of the opposite weir plate is inserted into the male screw portion of the opposite side of the form support (not shown), and a concrete form tightening rod is screwed into the hole to fix it. The washer is fixed along with the washer along the lateral end while tightening the nut while holding the end, and the entire assembly is completed.
[0031]
As described above, the concrete 11 is poured into the concrete placing space formed by the dam plates 10 on both sides, and then the concrete 11 is cured and solidified. After the concrete 11 has been cured and solidified, the nut 22 and the washer 21 are removed from the concrete form clamping rod 13, and the vertical end 23 and the horizontal end 24 are removed, and the concrete form clamping rod 13 is removed from the form. When the support plate 1 is retracted, the dam plate 10 is released from the concrete 11 to obtain a concrete structure. Then, a box spanner (not shown) is hung on the hexagonal portion 3d of the form support 1, and the form support 1 is screwed away from the separator 20 and disassembled from the concrete body.
[0032]
In the form support 1, the position of the front end of the hexagonal portion 3 d at the front end connected to the body portion 3 b has a length L corresponding to the plate thickness t of the weir plate 10 from the large-diameter end of the truncated conical body 2. At the same time, since the projection 3f is provided on the outer peripheral side of the end face of the hexagonal portion 3d, even when the concrete form tightening rod 13 is screwed strongly (by hand tightening or use of an electric tool), the protrusion 3f is fixed to the concrete form. Since the dam plate 10 is not tightened by contacting the flange portion 13b of the attached rod 13, damage to the dam plate 10 can be prevented, and the contact of the concrete form clamping rod 13 with the shaft 13c becomes the projection 3f, and the contact area thereof Is small, so the biting force is weak, and when removing the concrete formwork tightening rod 13 at the time of dismantling the formwork, the edge is cut earlier than the screwing of the formwork support 1 and the separator 20 side, and the removal is performed. It becomes possible and the form can be dismantled according to the procedure.
[0033]
Further, since the form support 1 has the projection 3g at the flange end on the shaft head side, when the concrete form tightening rod 13 is to be removed at the time of dismantling the form, the form of the flange is required. The protrusion 3g of 3a resists the concrete, and the male screw 3e of the form support 1 and the female screw 13a of the concrete form tightening rod 13 are released first, so that the form can be dismantled according to the procedure. .
[0034]
In addition, the form support 1 has a thickness of the body 3 b equal to the hole diameter of the weir plate 10 and a length of the body 3 b that is slightly inserted into the mounting hole 12 of the weir plate 10. After the mold support 1 is inserted into the weir plate 10 from the inside of the form when assembling the form, when the concrete form tightening rod 13 is screwed from outside the form while rotating, the body part is 3b and the mounting hole 12 are in tight contact with each other, so that they do not easily rotate together and are easy to assemble.
[0035]
【The invention's effect】
As described above, according to the first aspect of the present invention, even when the concrete form tightening rod is strongly screwed, the projection abuts on the flange of the concrete form tightening rod and the dam plate is not tightened. In addition to preventing damage to the weir plate, the contact of the concrete formwork tightening rod with the shaft becomes a projection, and the contact area is small, so the biting force is weak, and the work of removing the concrete formwork tightening rod when the formwork is dismantled. Sometimes, the edge is cut earlier than the screwing of the form support and the separator side, and the form can be removed, and the form can be dismantled in accordance with the procedure.
[0036]
According to the second aspect of the present invention, when the concrete form tightening rod is to be removed at the time of dismantling the form, the protrusion of the flange portion resists against the concrete, and the male screw part of the form support is connected to the concrete. The screwing of the female screw portion of the form-tightening rod is released first, and the form can be dismantled in accordance with the procedure.
[0037]
According to the third aspect of the present invention, when inserting the form support from the inside of the form into the weir plate from the inside of the form when assembling the form, when the concrete form tightening rod is screwed from the outside of the form while rotating, Since the body and the mounting hole are in tight contact with each other, they do not easily rotate around and are easy to assemble.
[Brief description of the drawings]
FIG. 1 is a front view of a form supporter.
FIG. 2 is a left side view of the form support.
FIG. 3 is a right side view of the form supporting device.
FIG. 4 is a cross-sectional view of a form support.
FIG. 5 is a diagram showing a use state of a form supporting device.
FIG. 6 is an enlarged view of a form supporting part in a used state.
FIG. 7 is a cross-sectional view of a conventional form support.
FIG. 8 is a diagram showing a state of use of a conventional form support.
FIG. 9 is a cross-sectional view of a conventional form support.
FIG. 10 is a view showing a use state of a conventional form supporting device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Form support 2 Truncated conical body 2a Assembled shaft hole 2b Small diameter recess 2c Large diameter recess 3 Shaft 3a Flange 3b Body 3c Female screw 3d Hexagon 3e Male thread 3f Projection 10 Weir plate 13 Concrete frame tightening Rod 20 Separator

Claims (3)

A resin-made frustoconical body manufactured separately,
A flange is provided on the shaft head side that is integrally processed with iron, a female screw is provided on the shaft head side that is connected to a separator that penetrates the flange and reaches the body, and a tip connected from the body is dismantled from the concrete body. A shaft body having a hexagonal portion which is a box spanner hanging portion for the male screw portion screwed to the concrete form tightening rod,
In the form support by the combination of
The position of the tip of the hexagonal part of the tip connected to the trunk is a length corresponding to the thickness of the weir plate from the large-diameter end of the truncated conical body, and on the outer peripheral side of the end face of the hexagonal part. And a form support provided with a projection. The form support according to claim 1, wherein a protrusion is provided at a flange end on the shaft head side. The body part has a thickness that is equal to the diameter of the mounting hole of the weir plate, and the body part has a length that is slightly inserted into the mounting hole of the weir plate. The form support according to claim 2.

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