JP5090220B2 - Concrete construction equipment - Google Patents

Description

  The present invention relates to a concrete construction apparatus used when constructing a receiving frame used for various inspection openings provided indoors or outdoors such as a veranda or a front door.

  A receiving frame is provided in concrete at an inspection opening such as indoors, a veranda or a front door. As a construction apparatus for fixing the receiving frame to concrete, a concrete construction apparatus as shown in FIGS. 5 and 6 is known (Patent Document 1). This apparatus is for holding the receiving frame 101 at a predetermined height on the panel 102 and attaching the receiving frame 101 to the upper edge of the hatch periphery by driving concrete.

  In order to construct using this concrete construction apparatus, first, the ink is drawn on the control panel 102 to define the installation location. Then, the fixing jig 103 is fixed to a predetermined position with a nail or the like. Next, the receiving frame 101 is assembled horizontally to the fixing jig 103 at a predetermined height. The mold frame 104 is placed at a predetermined position inside the receiving frame 101, and eight corners of the mold frame 104 are reinforced by the corner metal fitting 105 and fixed to the panel 102 with nails. Further, the reinforcing material 107 is inserted into the gap between the receiving frame 101 and the mold 104.

  Thus, after setting the receiving frame 101 and the mold 104 at predetermined positions, concrete is driven from the outside of the receiving frame 101. After the concrete is solidified, the mold 104 is removed, and a floor finishing material such as a resin tile is laid on the concrete surface. Further, a hatch lid (not shown) is attached to the receiving frame 101. Thus, the construction of the receiving frame 101 is completed.

  According to this concrete construction apparatus, the receiving frame 101 can be fixed to the concrete by driving concrete once while fixing the receiving frame 101 at a predetermined position. For this reason, a construction period can be shortened significantly. Moreover, since the formwork 104 is reinforced by the corner metal fitting 105, it is possible to prevent the formwork 104 from being deformed by the pressure from the concrete when the concrete is driven in, so that the hatch can be formed in a desired shape. Furthermore, since the reinforcing material 107 is inserted into the gap between the receiving frame 101 and the mold 104, deformation of the receiving frame 101 can be prevented.

JP-A-7-91063

  However, in the above-described conventional concrete construction apparatus for fixing the receiving frame, the corner metal fitting 106 is used to reinforce the formwork 104, so that it takes time to mount the corner metal fitting 106. Further, the positional relationship between the mold frame 104 and the receiving frame 101 may be shifted, so that a gap may be formed between the mold frame 104 and the receiving frame 101 or the reinforcing material 107 may not enter. There was a possibility that reinforcement by the material 107 would be insufficient.

  The present invention has been made in view of the above-described conventional circumstances, and can prevent the deformation of the receiving frame and the formwork and can easily determine the width during the construction of the receiving frame, thereby completing the construction in a short time. It is set as the problem which should be solved to provide the apparatus for concrete construction which can be done.

The concrete construction apparatus according to the present invention is a rectangular frame having a substantially L-shaped cross section, and includes a receiving frame including a side wall portion where an anchor is fixed to an outer surface and a lid receiving portion protruding inward from the lower end of the side wall portion. A concrete construction device for fixing,
A fixing jig that is erected on a horizontal support base material that supports the concrete before solidification, and that anchors the anchor so that the height can be adjusted, and supports the receiving frame at a predetermined height;
Installed on the horizontal support base material, disposed inside the receiving frame supported by the fixing jig, and blocks the concrete driven outside the receiving frame to define the inner peripheral surface of the hatch entrance A mold part to be
A receiving frame supporting protrusion that is placed on the mold frame so as to intersect each other at right angles, projects both ends outward from the mold frame, and supports the side wall of the receiving frame from the inside, and on the inside of the mold frame A support rod having a mold support protrusion projecting radially so as to abut,
It is characterized by providing.

  In the concrete construction apparatus of the present invention, the mold part is installed inside the receiving frame, and the receiving frame is further fixed to a desired height by a fixing jig. Then, the support rods are placed on the mold part so as to cross each other at right angles. Here, since the support rod is provided with a mold support protrusion projecting in the radial direction so as to contact the inside of the mold section, it is placed while the mold support support protrusion is in contact with the inside of the mold frame. By doing so, the support rod can be easily and accurately placed at a predetermined position, and at the same time, the tip of the receiving frame support protrusion of the support rod automatically becomes the position of the inner surface of the receiving frame. For this reason, when the concrete is driven, the formwork support protrusions support the formwork from the inside, and the receiving frame support protrusions support the reception frame from the inside, so that the formwork and the receiving frame are deformed by the pressure of the injected concrete. Can be prevented.

  Therefore, according to the concrete construction apparatus of the present invention, it is possible to prevent deformation of the receiving frame and the formwork and easily determine the width when constructing the receiving frame, and the construction can be completed in a short time.

  It is preferable that a notch for placing a support rod is provided at the center of one side of the upper end of the mold. With this configuration, it is easy to place the support rod at a predetermined position, and it is possible to prevent the support rod from shifting in the width direction.

  Moreover, it is also preferable that the support rod is provided with a fitting recess that fits each other at the intersection. If this is the case, after placing one support rod in a predetermined position of the formwork in the construction, the other support rod can be fitted into the fitting recess to prevent mutual interference and mechanical strength. Can be increased.

  The supporting rods that intersect at right angles to each other may be two in total, vertically and horizontally, but may have a plurality of longitudinal and / or lateral surfaces. In this way, the reinforcement strength of the receiving frame can be further increased.

  Hereinafter, the concrete construction apparatus according to an embodiment embodying the present invention will be described in detail with reference to the drawings.

(Example)
As shown in FIG. 2, the concrete construction apparatus of the embodiment is for fixing a receiving frame 2 in a predetermined position and forming a square doorway defined by the receiving frame 2 by driving concrete. is there. As shown in FIG. 1, the concrete construction apparatus is placed on a square frame-shaped cylinder 3 disposed inside the receiving frame 2 and intersecting at right angles to each other on the mold 3. In addition, two support rods 4 and a fixing jig 5 that supports the receiving frame 2 at a predetermined height are configured.

  The mold 3 is made of a galvanized steel plate, and four L-shaped members 3a, 3b, 3c, and 3d bent in an L-shape are combined. In a portion where the L-shaped members 3a, 3b, 3c, and 3d overlap, three holes 3h that are elongated in the horizontal direction are opened in the vertical direction, and a thumbscrew 3e is inserted and fixed. A rectangular notch 3 f is provided at the center of each upper edge of the mold 3. An L-shaped metal fitting 3g is welded to the lower end of the mold 3, and the L-shaped metal fitting 3g is fixed to a panel 6 as a horizontal support base by a nail 3i.

  As shown in FIG. 3, the two support rods 4 have the same shape and are fixed back to back by welding slightly inside the long member 4 a having a U-shaped cross section and both ends of the long member 4 a. It consists of an L-shaped formwork support protrusion 4b. Both ends of the elongate member 4a protrude in the length direction from the formwork support protrusion 4b to form receiving frame support protrusions 4c. A notch 4d is provided in the center of the long member 4a on the opening side, and the two support rods 4 are fitted in a cross shape so that the notches 4d face each other.

  As shown in FIG. 4, the receiving frame 2 has a substantially L-shaped cross section, a side wall portion 2 a that extends in the vertical direction, and a lid that protrudes inward from the lower end of the side wall portion 2 a and contacts the mold frame 3. And a receiving portion 2b. On the outside of the side wall portion 2a, anchors 2c fixed to the fixing jig 5 are fixed to one piece by screws 2d.

  The fixing member 5 includes a pedestal 5c supported by a plurality of pillars extending in a bowl shape, a bolt 5e screwed to a female screw 5d formed at the center of the pedestal 5c, and a nut screwed to the tip of the bolt 5e. 5f and 5g. A hole 2e is formed at the lower end of the anchor 2c screwed to the side wall 2a. A bolt 5e is inserted into the hole 2e and is adjusted to a predetermined height by nuts 5f and 5g and fixed. The pedestal 5 c is fixed to the control panel 6 with nails 7.

<Construction method>
Next, the construction method of the receiving frame 2 using the concrete construction apparatus configured as described above will be described. First, the anchor 2c is fixed to a predetermined position on the receiving frame 2 shown in FIG. 4 with screws 2d. Then, ink is drawn on the control panel 6 to define the installation location. Next, the fixing jig 5 is placed at a predetermined position where the fixing jig 5 is scratched, and the fixing jig 5 is fixed with the nail 7. Further, after the nut 5g is screwed into the bolt 5e of the fixing jig 5, the hole 2e of the anchor 2c is inserted into the bolt 5e, and further the nut 5f is screwed. And the receiving frame 2 is horizontally fixed by predetermined | prescribed height by adjusting the attachment position of the anchor 2c with the nut 5g and the nut 5f. Then, the mold 3 is placed at a predetermined position where it is scratched, and is fixed by the L-shaped metal fitting 3g. Further, the receiving frame supporting protrusion 4 c is placed on the notch 3 f of the mold 3 while the mold supporting protrusion 4 b of the support rod 4 is brought into contact with the inside of the mold 3.

  In this way, the receiving frame 2 and the mold frame 3 are set at predetermined positions shown in FIGS. 1 and 2, and then concrete is driven in from the outside of the receiving frame 2. After the concrete is solidified, the thumbscrew 3c of the mold 3 is removed, and the L-shaped members 3a, 3b, 3c, and 3d are removed. A floor finishing material such as a resin tile is laid on the surface, and a hatch cover (not shown) is attached. Thus, the construction of the receiving frame 2 is completed.

  According to this concrete construction apparatus, since the support rod 4 is provided with the mold support projection 4c projecting in the radial direction so as to contact the inside of the mold 3, the mold support projection 4c By placing the support rod 4 in contact with the inside of the mold 3, the support rod 4 can be easily and accurately placed at a predetermined position, and at the same time, the tip of the receiving frame support protrusion 4 c of the support rod 4 The position of the inner surface of the receiving frame 2 is automatically set. Therefore, when the concrete is driven, the formwork support protrusion 4c supports the formwork 3 from the inside, and the receiving frame support protrusion 4c supports the receiving frame 2 from the inside, so that the formwork 2 and the receiving frame 3 are driven into the concrete. It is possible to prevent deformation due to the pressure.

  Also, as shown in FIG. 3, the support rods 4 are provided with fitting recesses 4d that are fitted to each other at the intersection, so that one of the support rods 4 is placed at a predetermined position on the mold 3 in construction. After that, by fitting the other support rod 4 into the fitting recess 4d, mutual interference can be prevented and the mechanical strength can be increased.

  The present invention is not limited to the description of the embodiments of the invention. Various modifications may be included in the present invention as long as those skilled in the art can easily conceive without departing from the description of the scope of claims.

It is a top view which shows the construction state of the apparatus for concrete construction of an Example. It is sectional drawing which shows the construction state of the apparatus for concrete construction of an Example. It is a perspective view of a support rod. It is a partial cross section figure which shows the construction state of the concrete construction equipment of the execution example. It is a top view which shows the construction state of the conventional concrete construction apparatus. It is sectional drawing which shows the construction state of the conventional concrete construction apparatus.

Explanation of symbols

2c ... Anchor 2a ... Side wall part 2b ... Lid receiving part 2 ... Receiving frame 6 ... Control panel (horizontal support base material)
5 ... Fixing jig 3 ... Formwork (formwork part)
4 ... support rod 4c ... receiving frame support protrusion 4b ... formwork support protrusion 4d ... fitting recess

Claims (3)

A concrete construction device for fixing a receiving frame comprising a rectangular frame having a substantially L-shaped cross section and having a side wall portion to which an anchor is fixed on the outer surface and a lid receiving portion protruding inward from the lower end of the side wall portion. There,
A fixing jig that is erected on a horizontal support base material that supports the concrete before solidification, and that anchors the anchor so that the height can be adjusted, and supports the receiving frame at a predetermined height;
Installed on the horizontal support base material, disposed inside the receiving frame supported by the fixing jig, and blocks the concrete driven outside the receiving frame to define the inner peripheral surface of the hatch entrance A mold part to be
A receiving frame supporting protrusion that is placed on the mold frame so as to intersect each other at right angles, projects both ends outward from the mold frame, and supports the side wall of the receiving frame from the inside, and on the inside of the mold frame A support rod having a mold support protrusion projecting radially so as to abut,
A concrete construction apparatus comprising:   2. The concrete construction apparatus according to claim 1, wherein a notch for placing a support rod is provided at the center of one side of the upper end of the mold.   The apparatus for concrete construction according to claim 1 or 2, wherein the support rod is provided with a fitting recess that fits each other at an intersecting portion.

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