JPH0584748U - Edge cutting tool for dismantling formwork - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an edge-cutting tool for dismantling a formwork that does not require a special structure / configuration and that can smoothly separate the formwork when dismantling and that does not counteract reaction forces between adjacent forms. . [Structure] As the edge cutting tool 7, a pair of locking hooks 70a,
A clamp ring 72 that pivotally supports and opens and closes the base portion 71 in a state of facing 70b but slides the base portion 71.
And the pressing bolt 73 is screwed into the base portion 71 in a penetrating state. Locking hook pair 70a, 70b
Is locked to the thick pipes 12 and 12 of the two sets, and the form 1
The tip portion (21) of the separator 2 located in the hole 13 is covered with the tip portion of the pressing bolt 73 and tightened. As a result, the mold 1 is peeled off in the vertical direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a framing tool for dismantling a formwork for cutting an edge with a concrete surface when dismantling the formwork, and in particular, it is attached to a thick member attached to the formwork and peeled vertically. Rim cutting tool for dismantling the formwork.

[0002]

[Prior Art]

 As is well known, construction of a concrete structure is performed by installing a formwork around a rebar structure and placing concrete inside the formwork. As such a formwork, a weir plate is generally attached to a frame body made of a stake, and a large number of unit formwork having predetermined vertical and horizontal dimensions are spliced and arranged on the building surface facing the reinforcing bar assembly. Each unit formwork is supported by properly mounting thick members. It is common to apply a release agent such as grease to the surface of the barrier plate to facilitate peeling during dismantling.

[0003]

[Problems to be solved by the device]

 By the way, after the concrete that has been cast inside the formwork has hardened, in order to separate the formwork from the concrete surface when dismantling the formwork, even if a release agent is applied to the surface of the dam plate, However, it was necessary to prune out a large number of unit formwork lined up on the building surface one by one, which had the disadvantage of damaging the edge. If the edge of the mold is damaged, the number of times of diversion is reduced, which is not preferable.

On the other hand, as described in, for example, Japanese Utility Model Publication No. 63-47244 (E04G 9/00), a plurality of weir plates are connected in advance by screw jacks to form a unit, which is driven by a screw jack. Some are torn off from the concrete surface. According to this method using a screw jack, it is possible to pull up the reaction force of the adjacent molds in the vertical direction from the placing concrete surface. On the other hand, there was a disadvantage in terms of assembly and cost because the mounting structure of the screw jack required some special work and the mounting structure was special.

The present invention has been made in view of the above circumstances, and an object of the present invention is that the mold itself does not require a special structure or configuration, and the mold can be smoothly peeled off during disassembly. An object of the present invention is to provide an edge-cutting tool for dismantling a formwork, which enables the formwork to avoid reaction forces between adjacent forms.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is to dismantle a formwork built in and supported by the ends of a plurality of horizontally extending separators assembled in a rebar assembly. A rim cutting tool for dismantling a formwork for cutting an edge with a surface, which is positioned on a locking hook that is engaged with a thick member assembled to the formwork and a separator penetrating hole of the formwork. Pressing means for contacting the tip of the separator and pressing the tip in the separating direction of the mold.

[0007]

[Action]

 The edging tool of the present invention is mounted on the mold by engaging the engaging hook with the thick end member. Then, since the tip end is pressed in the separating direction of the form by the pressing means that is brought into contact with the end of the separator located in the hole of the form, the thick member is pulled out in the opposite direction. The frame is peeled vertically from the cast concrete surface.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing a preferred embodiment of an edge cutter for disassembling a mold according to the present invention. The figure shows a state in which the edge cutting tool was attached to the thick pipe of the formwork during the dismantling operation. FIG. 2 is a side view of the edge cutting tool, and the figure shows a state in which the formwork is being torn off from the cast concrete surface.

As shown in FIG. 3, the built-in formwork 1 has piers 10 arranged vertically and around them to form a frame body, and a weir plate 11 is fixed to the frame body. The two thick pipes 12 and 12 are arranged in the horizontal direction. In this embodiment, the unit form is set to have a vertical dimension of 2925 mm and a horizontal dimension of 2700 mm to form a large panel. However, the one shown in FIG. 3 has a structure in which a standard size unit form U and a shortened size deformable form V having a lateral dimension of 2000 mm are joined together. This formwork 1 is provided with holes 13 ... Corresponding to the separators 2 ... Arranged in the reinforcing bar assembly of the building section, and regarding this, the arrangement of the thick pipe 12 is two of them. Each hole 13 is located between the sets. That is, the formwork 1 is locked to the separators 2 ... Arranged in the reinforcing bar assembly at the building part, and a foam tie as a fixture is inserted through the hole 13 of the formwork 1 to form the separator. It is connected to a plastic cone 21 which is connected to the tip of the second member, that is, the tip of the separator 2, and is built side by side by co-fastening.

It should be noted that the thick pipe 12 is not installed in the form 1 at the time of building, but is assembled in advance. That is, as shown in FIG. 1, the clamp plate 60 is passed over the thick pipes 12 and 12 of the two sets at a position where they do not correspond to the separators 2 of the built-in portion, and they are fastened together by the foam tie 6. As a substitute for a lock nut, a plastic cone 21 is attached to the tip of the foam tie 6 that protrudes through the barrier plate 11, but is not connected to the separator 2.

The edge cutting tool 7 is for cutting the edge with the concrete surface P for pouring when the formwork 1 is dismantled, and basically, the thick pipe 12 assembled to the formwork 1 is used. And a pressing bolt 73 against the tip end portion (21) of the separator 2 located in the hole 13 of the mold 1.

That is, the edge cutting tool 7 is pivotally supported by the base portion 71 in such a manner that the pair of locking hooks 70 a and 70 b face each other, and the clamp ring 72 that slides the base portion 71 is openable and closable. The pressing bolt 73 is screwed into the base portion 71 and penetrates through it, and its tip is covered with the male screw 22 of the plastic cone 21 connected to the tip of the separator 2. It has become . Therefore, in the edging operation, the locking hook pairs 70a and 70b are locked to the thick pipes 12 and 12 of the two sets, and the male screw 22 of the plastic cone 21 located in the hole 13 of the formwork 1 is attached to the pressing bolt 73. It suffices to cover the tip part and tighten it, and as the tightening rotation of the pressure bolt 73 causes the thick pipes 12 and 12 to be pulled out in the opposite direction, the formwork 1 is vertically moved from the pouring concrete surface P. Torn in the direction.

When disassembling the mold 1, first, all the foam ties 6 connected to the separator 2 are removed, that is, all the linking means for supporting the building is removed, and the mold 1 can be detached from the separator. And At this time, it is preferable to set a transport carriage having a lifting mechanism such as a forklift on the formwork 1.

After that, the edge cutting tool 7 may be attached to the formwork 1 to cut the edge with the concrete placing surface P, that is, the pair of locking hooks 70a and 70b may be used as the thick pipe 12 of the two sets. The mold 1 is peeled off from the cast concrete surface P by engaging the end of the pressing bolt 73 with the tip of the pressing bolt 73 while pressing the tip of the separator 2 toward the separating direction of the mold 1.

As described above, as the edge cutting tool 7, the locking hook pairs 70a and 70b are locked to the two thick pipes 12 and 12, and are thereby attached to the mold 1. Since the thick pipes 12 and 12 are pulled out in the opposite direction as the pressing bolt 73 that is brought into contact with the male screw 22 of the plastic cone 21 located in the hole 13 of the mold 1 is tightened, The formwork 1 will be torn off vertically from the poured concrete surface P. Since the edge cutting work is performed only by attaching the edge cutting tool 7 to the formwork 1 and tightening the pressing bolts 73, the dismantling work can be performed easily and quickly without taking a special structure or configuration in the formwork 1 itself. It can be carried out.

In the above embodiment, the locking hooks 70 are configured as a pair, but the invention is not limited to this. The locking hooks 70 can be locked so that the locking bolts are not disengaged when tightened. Therefore, for example, the hook tip may be extended to have only one.

[0017]

[Effect of the device]

 As described in detail above, according to the edge disassembling tool for disassembling formwork according to the present invention, the engaging hook is engaged with the thick end member, and is thereby attached to the formwork. Since the tip end portion is pressed by the pressing means that is brought into contact with the tip end portion of the separator located in the hole portion of the frame, the thick member is pulled out in the opposite direction, and the formwork is removed from the cast concrete surface. It will be stripped vertically. The edging operation can be performed easily and quickly because the edging tool is attached to the mold and the pressing means is actuated, and the mold itself does not require any special structure or configuration.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing an edge cutting tool.

FIG. 3 is an elevational view showing a formwork.

[Explanation of symbols]

 1 Formwork 2 Separator 7 Edge Cutting Tool 12 Edge Thick Member (Thick Edge Pipe) 13 Hole 21 Plastic Cone 70 Locking Hook 73 Press Bolt P Placing Concrete Surface

Claims (1)

[Scope of utility model registration request] 1. An edge between a mold and a cast concrete surface for disassembling a form built and supported at the tips of a plurality of separators assembled in a rebar assembly and extending in the horizontal direction. An edge cutting tool for dismantling a formwork, which is to be engaged with a thick member assembled to the formwork, and a tip of a separator located in a separator penetrating hole of the formwork. An edge cutting tool for disassembling a mold, which comprises a pressing means that abuts against the mold and presses the tip in the separating direction of the mold.