JP5495703B2 - Equipment for forming mounting holes for handrail posts - Google Patents

Description

The present invention, when constructing the veranda or the like in concrete, for the formation apparatus mounting hole of the handrail posts for Ru mounting the handrail to the flange portion of the outer edge.

  Conventionally, in order to form a mounting hole for a handrail support column, a means for drilling a finished edge using a drill or the like is sometimes used, but because the work involves a lot of labor due to the hardness of the concrete When molding a casing portion such as a veranda with concrete, a means for forming a mounting hole by inserting a blanking die, which is the shape of the mounting hole, into a predetermined location is taken.

JP 09-41476 A JP 2005-273363 A

  Conventionally, in order to take this die-cutting means, a die-cutting die is attached to a mold frame for molding a concrete protruding edge portion through a jig. In addition, a plastic PET bottle is used for the retractable mold, or a combination of a flexible tube and a hard cylindrical core material inserted therein is used.

  When a plastic bottle is used for the retractable mold, a through hole for a bottle mouth is provided in a jig made of a plate material, and a bottle cap is screwed into the mouth so that the bottle is suspended and fixed. In this way, the concrete is poured in a state where the bottle is attached to a predetermined location, and when the die is cut after the concrete is hardened, the bottle is pulled out after the jig is removed. However, since the rib which holds a shape is formed in it, it could not be pulled out easily.

  Further, when the extraction die is a combination of a tube and a core material, the shape and position of the tube are held by the core material, and the core material is attached to the jig in the attached state. Therefore, in order to perform die cutting, if the jig is removed and the core material is first extracted, it can be extracted by peeling off the deformable tube. However, the insertion and removal of the core from the tube is not easy because friction acts strongly.

In view of the above circumstances, the present invention provides a device for forming a mounting hole for a handrail post that can reliably extract a retractor mold from a molded concrete edge and also has good workability. Was an issue.

In order to solve the above-mentioned problems, the present invention is an apparatus for forming a mounting hole for standing a handrail support column on a concrete projection edge portion on a veranda or the like, and a vertically elongated core mold for forming the mounting hole, It consists of a jig that supports the extraction die on the mold and a male screw bolt that passes through the jig up and down and tightens the extraction die on its lower surface. The extraction die has a through-hole through which the male screw bolt can move up and down. A shape body having a die body and a female screw member integrated on the lower surface thereof, a female screw is provided at the center of the female screw member so that the tip of the male screw bolt can protrude downward, and the jig has hanging pieces on both sides. And a pair of left and right clasps that hooks the mounting member to the upper ends of both mold frames. The pair of mold members is formed of foamed polystyrene, and a pair of biting pieces of the mounting member are bited into the upper end surface. Make a notch There is provided a forming apparatus mounting holes of the handrail strut characterized by Rukoto.

Since the device for forming the attachment hole of the handrail post is configured as described above, the extraction die can be attached to and removed from the predetermined location by rotating the male screw bolt, and a firm attachment state can be obtained by tightening, The pulling die can be lifted with the boost of the screw and pulled out reliably.

  As described above, according to the present invention, the puller die can be reliably extracted from the molded concrete edge with the boost of the screw, which not only facilitates the operation but also allows the extraction. Since the procedures for attaching and detaching the child mold are simple, there is an excellent effect that the workability is also improved.

In the case of the second and third aspects, the attachment of the extraction die to the jig is further strengthened, and the extraction of the extraction die is further surely and easily performed.

It is a perspective view which decomposes | disassembles and shows the formation apparatus of the attachment hole of the handrail support | pillar in 1st Example of this invention. It is sectional drawing which was partially notched which shows the use condition of the forming apparatus. It is an expanded sectional view of the AA line arrow of FIG. It is sectional drawing which shows the point which pulls out a core type from an attachment hole in a protrusion part. It is sectional drawing which shows the state which stood the handrail support | pillar in the attachment hole. It is a perspective view corresponding to FIG. 1 which shows 2nd Example of this invention. It is sectional drawing explaining the Example of a core type and the Example of an internal thread member. It is sectional drawing explaining the relationship between the extraction type | mold of the same Example and a round-off board. It is a figure explaining the shape of the extraction board of the Example. It is sectional drawing corresponding to FIG. 2 in the Example. It is sectional drawing which shows the state which formed the attachment hole with the formation apparatus of the attachment hole of the handrail support | pillar of the Example.

  In the present invention, a jig 1, a dies 3 attached to the jig 1, and a male screw bolt 5 for attaching the dies 3 to the jig 1 are used. The retractable die 3 is held between the frames 9 and 9. Among them, the jig 1 can be implemented by both-side holding and one-side holding. Further, although the pull-out die 3 is illustrated as a combination of the die main body 31 and the female screw member 33, it can also be an integrally formed member. Further, the bottom plate 4 left in the mounting hole 39 may be used, but the withdrawal die 3 can be lifted without this.

  The jig 1 is a case of both ends attached to the both-side molds 9, 9, and the bridge member 13 bridged between both and the both ends of the bridge member 13 are nailed to the molds 9, 9 (or screws) It is made up of L-shaped clasps 15 and 16 that stop).

  The installation member 13 of the jig 1 is in the form of a strip made of an extruded aluminum material, but has hanging pieces 17 and 17 on both side edges, and inclined surfaces 18 and 17 are provided on both sides of the hanging pieces 17 and 17. By forming 18, the taper is formed so as to be easy to insert and toward the lower end. Further, screw pockets 19, 21, and 21 project from the upper surface of the erection member 13 at the center and left and right ends, respectively, and horizontal parts 22 and 22 that project from the left and right at the upper end project from the center screw pocket 19. The A through hole 28 into which the male screw bolt 5 is inserted is provided at the center of the shape member.

  One piece of the clasps 15 and 16 is nailed to the upper surface of the reinforcing member 23 at the upper end of the mold 9. Reference numeral 24 denotes a nailing hole, and one clasp 15 is provided with through holes 27 and 27 for fixing screws 25 and 25 which are screwed into both end screw pockets 21 and 21 of the erection member 13 on the standing side piece. In addition, the other clasp 16 is provided with an elongated hole 29 in the vertical direction for screwing the adjusting screw 26 into the central screw pocket 19 at the center. In this way, the adjustment member 26 is adjusted at the tightening position so that the installation member 13 is horizontal. This is because there is a step in the height of both the molds 9,9.

  The pulling die 3 supported by the jig 1 includes a polystyrene main body 31 formed in a vertically long rectangular cube, and a square plate-shaped female screw member 33 that is bonded and integrated with the lower end surface of the die 3. It is made of and used as an integral part with an adhesive. Among them, the die body 31 is provided with a through hole 35 through which the male screw bolt 5 passes in the center, and cuts 37 and 37 into which the hanging pieces 17 and 17 at both ends of the erection member 13 are inserted at the upper end surface. The female screw member 33 is provided with a female screw 34 through which the through hole 35 can be removed.

  FIG. 2 shows an assembled state in the field, that is, a state of use, and the clasps 15 and 16 are attached on both side molds 9 and 9, and the erection member 13 is bridged by a fixing screw 25 and an adjusting screw 26 between them. The male screw bolt 5 is passed through the intermediate portion, the retractor die 3 is inserted into the male screw bolt 5 thus suspended, and the male screw bolt 5 is screwed into the female screw member 33 at the lower end to be tightened. At this time, the head of the male screw bolt 5 is tightened on the horizontal parts 22 and 22 on the upper surface of the erection member 13, and both hanging pieces 17 and 17 of the erection member 13 are inserted into the notches 37 and 37 of the die body 31. Thus, it is in pressure contact with the upper surface of the mold body 31. The mold body 31 is fixed to the installation member 13 by this insertion and pressure contact.

  By tightening the male screw bolt 5, the dies 3 are stably held in the suspended state, so that the concrete 11 can be safely poured around the dies 3 that are accurately positioned. Since the projecting edge portion 7 is a location where rain hits, the upper surface of the projecting edge portion 7 is inclined to be concreted. Since unstable pressure is applied to the core 3 due to this tilting work, safety was achieved as a strong fixed state coupled to the hanging pieces 17 and 17.

  After the concrete 11 is hardened, the retractable die 3 is pulled out. About this, although the jig | tool 1 is removed (FIG. 4), it is necessary to remove the male screw volt | bolt 5 once. Therefore, the solid line in the figure shows a return state in which the removed male screw bolt 5 is inserted again. Thus, when the male screw bolt 5 is further screwed in, it rotates while abutting against the bottom surface serving as the mounting hole 39 by coming out under the female screw member 33, but since the female screw member 33 does not rotate, it is pushed up by the rotation of the male screw 6. At the same time, the mold body 31 is also pushed up. That is, the retractable die 3 floats from the mounting hole 39.

  If it floats up even a little, this will cancel | release the integral type 3 with the concrete 11 by this, Therefore The pull-out type | mold 3 can be pulled out, lifting the male screw volt | bolt 5. FIG. If the polystyrene main body 31 is rejoined so as to be entangled with the periphery of the mounting hole 39, the female screw member 33 can be pulled out to open the mounting hole 39 while crushing and removing the foamed polystyrene. The female screw member 33 is made slightly smaller than the die body 31 to facilitate drawing.

  The dimension L for pushing up the core 3 is close to the thickness M of the erection member 13 and the thickness M is the limit. However, if the male screw bolt 5 is not returned when the jig 1 is removed, and the extra long male screw bolt 42 is attached to the electric screwdriver 40 with the same screw standard, it is possible to increase the push-up dimension and to rotate it. The retractable die 3 can be pulled out at a speed. Thus, it is suitable for use of the electric screwdriver 40.

  FIG. 5 shows a state in which the handrail support column 43 is erected in the mounting hole 39 formed as described above, and the handrail core material 47 is fixed by injection of the mortar 45.

  In the case shown in FIGS. 6 to 11, the jig 1 is cantilevered, the molds 9 and 9 are made of metal, and the jig 1 and the withdrawal die 3 are also made of metal. In this case, a metal bottom plate 4 is used as an accessory. Further, the molds 9 and 9 are made of steel, and the reinforcement pieces 43 and 43 are attached to the upper ends thereof, so that the jig 1 is attached to the one reinforcement piece 43.

  The jig 1 includes a rectangular mounting board 45 that is slightly long along the reinforcing piece 43 and an angle cantilever member 47 that is fixed to the T-shape. The mounting board 45 is mounted on the reinforcing piece 43 of the mold 9 by a screw bolt 49 and a pair of cotter pins 52 and 52 so as to protrude between the nine and nine. 50 is a through hole for the screw bolt 49, and 54 and 54 are driving holes for the cotter pins 52 and 52. In addition, the jig 1 is provided with a through hole 28 through which the male screw bolt 5 passes in the center of the tip of the cantilever member 47, and screw holes are formed on the front and rear sides of the protruding side, and the male screw is screwed into the screw hole. By doing so, a pair of drooping pins 57 and 57 are suspended.

  The extraction die 3 is provided with a female screw member 33 of a nut, and is formed into a rectangular hollow cube that is long in the vertical direction, and is formed in a draft angle that becomes narrower toward the lower end on both the left and right sides (FIG. 7). ). As a manufacturing method, the top plate 59 and the bottom plate 61 with the female screw member 33 are welded to the upper end of the square tube having the draft angle to form a hollow shape.

  In the relationship with the male screw bolt 5, the extraction die 3 is provided with through holes 35 a and 35 b in the center of the top plate 59 and the bottom plate 61, and a female screw centered on the through hole 35 b by welding the nut on the upper surface of the bottom plate 61. 34 is provided. The top plate 59 is provided with retaining holes 53, 53 into which the hanging pins 57, 57 of the jig 1 are fitted, and the bottom plate 61 has a pair of knock pins 60, 60 for fastening the bottom plate 4 to the lower surface thereof. Are arranged around the through hole 35b.

  In order to leave the bottom plate 4 at the bottom of the mounting hole 39 of the handrail support column (FIG. 11), the width Wa of the bottom surface of the dies 3 so as to be combined with the concrete 11 so that it does not lift up with the dies 3 at that time. The width Wb is slightly wider than that (FIGS. 8 and 9). A central hole 62 is provided at the center, and a pair of hitting holes 63 and 63 into which the hanging pins 59 and 59 are inserted are provided. The center hole 62 is formed as a hole through which the male screw bolt 5 passes, but may be formed as a simple recess for receiving the male screw bolt 5. Further, the center die 62 does not necessarily need to be provided because the pulling die 3 is lifted also by abutting the male screw bolt 5 against the bottom plate 4.

  In order to assemble the apparatus when assembling the concrete molds 9 and 9, the jig 1 is attached to the upper end reinforcing portion 43 of the mold 9 on one side with the screw bolt 49 and the cotter pins 52 and 52. Further, the male screw bolt 5 is passed through the through hole 28 of the jig 1 from above, and is then screwed into the female screw 34 at the lower end while passing through the upper through hole 35a of the extraction die 3, and at the same time, the hanging pin 57 of the jig 1 is inserted. , 57 are passed through the retaining holes 53, 53. When the male screw bolt 5 is tightened in this manner, the extraction die 3 is fixed to the jig 1 so as to maintain a predetermined position and orientation.

  The bottom plate 4 may be attached in advance to the dies 3, but in any case, the bottom plate 4 is hit against the knock pins 60 and 60 while the bottom plate 4 is abutted against the bottom surface of the dies 3. 63 and 63 are inserted. It is integrated so that it can be left behind.

  FIG. 10 shows a state in which the concrete 11 is driven between the molds 9 and 9 after mounting the apparatus (corresponding to FIG. 2). The concrete 11 is cured and the molds 9 and 9 are hardened. At the stage of removing, the jig 1 is removed and the male screw bolt 5 is re-threaded, or a male screw bolt 42 (see FIG. 4) is screwed separately. As a result, the male screw bolt 5 (or 42) lifts the extraction die 3 as shown in FIG.

  At this time, the tip of the male screw bolt 5 (or 42) pierces the concrete 11 by the reaction of lifting the core 3, but the concrete 11 is picked up because it is surrounded by the center hole 62 of the bottom plate 4. The pulling die 3 can be reliably lifted by the effect of the screw boost. In addition, the bottom plate 4 remaining under the mounting hole 39 can be effectively used for positioning and strengthening the mounting of the core material 47, the anchor and the like accompanying the mounting of the handrail support 43 (see FIG. 5).

DESCRIPTION OF SYMBOLS 1 Jig 3 Pull-out type 4 Round bottom plate 5 Male screw bolt 7 Projection edge part 9 Formwork 11 Concrete 13 Construction member 15,16 Clasp 17 Dripping piece 31 Type | mold main body 33 Female screw member 34 Female screw 35 Through-hole 35a, 35b Through-hole 37 Notch 39 Mounting hole 42 Separate male screw bolt 43 Handrail post 51 Bottom plate 52 Cotter pin 57 Droop pin 59 Top plate 60 Knock pin 61 Bottom plate 63 Nail hole

Claims (3)

An apparatus for forming a mounting hole for erecting a handrail strut on a concrete projection edge on a veranda or the like, and a vertically long extraction mold for forming the attachment hole, and a jig for supporting the extraction mold on the mold frame, It consists of a male screw bolt that passes through the jig so that it can be moved up and down and fastens the dies on its lower surface. The dies are integrated on the lower surface of the die body with a through hole through which the male screw bolt can move up and down. A female screw member, a female screw is provided at the center of the female screw member so that the tip of the male screw bolt can protrude downward, and a jig is formed of a profile having hanging pieces on both sides; A handrail strut comprising a pair of left and right clasps that are hooked on the upper end of the frame, the mold body is formed of foamed polystyrene, and a pair of cuts are provided on the upper end surface to bite both hanging pieces of the installation member. Mounting hole shape Apparatus. The jig is made of metal with a cantilever structure that sticks only to the upper end of one mold and protrudes between the two molds. A plurality of drooping pins are arranged around the center, and the retractable die 3 is made of the same metal that has a top plate attached to the upper end of the cylindrical shape and a bottom plate fixed to the lower end, and is suspended on the top plate. 2. An apparatus for forming a mounting hole for a handrail strut according to claim 1, wherein a retaining hole for fitting a pin is provided, and a female screw member having a female screw into which a male screw bolt is screwed is fixed on the bottom plate. . The pull-out type has a wide bottom plate attached at least in one direction at both ends, which is attached to the lower surface of the pull-out type, and the bottom plate is arranged around the center through hole on the lower surface of the pull-out type. A plurality of dowel pins are suspended, and knock pin impact holes are provided correspondingly so that the bottom plate can be left behind at the bottom of the handrail post mounting holes, and are struck so as to be separated and released. The apparatus for forming a mounting hole for a handrail post according to claim 1 or 2.

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