JPH04137159U - Formwork peeling jig - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To provide a formwork peeling jig that can easily and quickly peel off concrete casting formwork from a concrete frame surface without damaging or destroying it during dismantling. . [Structure] A jig for peeling a formwork 4 for concrete pouring from a hardened concrete body surface 7a during dismantling, and includes a contact plate 2 that abuts a part of the concrete pouring surface of the formwork 4; , is provided with at least a tensioning side plate 3 which is connected to the corresponding contact plate 2, stands up along the side surface 5 of the formwork, and has a length protruding from the surface of the formwork.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a formwork peeling jig used when dismantling formwork for concrete pouring.

0002

[Conventional technology]

Currently, the core material is plywood formwork or plastic foam, and plastic is used on the front and back sides. The lightweight formwork is made of laminated soft surface material without using film, non-woven fabric, waterproof paper, etc. Concrete construction (RC construction) or steel reinforced concrete construction (SRC construction), etc. Widely used as concrete pouring formwork in concrete pouring. There is. These formworks can be combined as appropriate depending on the shape of the concrete structure to be formed. After concrete was poured and hardened, it was dismantled and removed, and most of the The mold is used again and again as formwork. During the above dismantling, a jig such as a crowbar is usually used to (underneath) and forcibly tore it off.

0003

[Problem that the idea aims to solve]

However, during the above-mentioned demolition work, the formwork is easily damaged by crowbars, etc. In particular, there was a problem that lightweight formwork could be destroyed in severe cases. therefore Even if you try to use the formwork repeatedly, the damage will increase each time it is dismantled, making it difficult to reuse it. If the number of times it can be used has decreased or it is destroyed, it can be replaced with a new formwork. This ultimately led to an increase in the cost of formwork. This invention was devised in view of the drawbacks of the conventional technology as mentioned above. Concrete structure can be easily and quickly constructed without damaging or destroying the formwork during dismantling. It is an object of the present invention to provide a formwork peeling jig that can be peeled off from a surface.

0004

[Means to solve the problem]

The formwork stripping jig of the present invention is used to remove hardened concrete from concrete pouring formwork during dismantling. A jig for peeling the cleat from the surface of the cleat structure, which A contact plate that comes into contact with a part of the formwork, and a contact plate that is connected to the corresponding contact plate and stands along the side of the formwork. A shape that includes at least a tension side plate having a length that rises and projects from the formwork surface. It is characterized by the following characteristics:

[0005]

【Example】

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a perspective view showing one embodiment of the jig of the present invention, in which 1 is a formwork stripping jig, and 2 is a jig for peeling off formwork; The contact plate 3 indicates a tension side plate. Figure 2 is an explanatory diagram showing an example of how the jig shown in Figure 1 is used. Yes, (a) shows how the jig is installed before disassembly, and (b) shows how the jig was installed during disassembly. Shows the status of the stripping work. In addition, Figure 2(a) shows the butter material and foam used when constructing the formwork. The illustration of connecting members such as beam ties is omitted.

[0006] The jig 1 of this embodiment has a width (short side) of a formwork 4 for concrete pouring as shown in FIG. The entire jig has a cross-sectional shape on both ends of a rectangular contact plate 2 with a length corresponding to It consists of tensile side plates 3 arranged in series so as to form a shape. The tension side plate 3 is shown in Figure 2. As shown in the figure, the contact plate 2 rises from both ends along the side surface 5 of the formwork. Moreover, when the contact surface 2 is in close contact with the formwork surface, the surface of the formwork is It has a length that protrudes from the surface. Also, the side plate 3 is designed to be easily pulled. A handle hole 6 is provided for holding the handle.

[0007] The peeling jig 1 configured as above is first pulled during disassembly as shown in Figure 2(a). The contact plate 2 is in close contact with the lower part of the concrete casting surface of the formwork 4a to be peeled off, and The side plate 3 comes into contact with the side surface 5 of the formwork and protrudes from the formwork surface (specifically, from the joint area). It is installed in such a condition. To install it, set the jig 1 integrally on the formwork 4a in advance. It is also possible to construct and install it with the formwork as it is after setting it up, or use a jig. 1 is first installed at the construction location of the formwork 4a, and then the formwork 4a is constructed later. You can do it step by step. When installing a jig integrated with the formwork, the jig and The formwork may be temporarily adhered using an easily peelable adhesive, double-sided adhesive tape, or the like. Ma The jig 1 mentioned above is installed at the bottom of the concrete pouring surface, but its installation location depends on the mold. There is no particular limitation as long as the frame can be peeled off most easily.

[0008] When the poured concrete 7 hardens and the formwork is dismantled, the steps shown in Figure 2(b) As shown in the figure, grasp the tension side plate 3 of the jig 1 and pull it toward you (in the direction of the arrow in the figure). Ru. As a result, the formwork 4a is held by the contact surface 2 with the upper end of the formwork as a fulcrum. The lower end of the formwork 4a is pulled up, and as a result, the concrete pouring surface of the formwork 4a becomes concrete. It is easily peeled off from the cleat body surface 7a.

[0009] The formwork stripping jig of the present invention includes at least the contact plate 2 and the tension side plate 3 as described above. It is sufficient that the contact plate 2 and the side plate 3 have the same shape. There are no particular restrictions as long as it does not interfere with frame construction or concrete pouring. Also The contact plate 2 is in contact with at least a part of the concrete pouring surface, and the transmission is transmitted through the contact plate. The contact area is such that the tensile force during demolition is not applied sharply (locally) to the formwork. It is fine as long as it is something. Therefore, the contact plate 2 extends over the entire length of the formwork width as in the previous embodiment. It is not limited to the type of contact, for example, the length is at least 1/5 or more of the width of the formwork. It may be of a form having an abutting surface that comes into contact with a portion (area). In addition, the jig of this invention As shown in Figure 3(a), the height position corresponding to the thickness of the formwork from the contact plate 2 to the tension side plate 3 is A locking protrusion 8 may be provided. When such a locking protrusion 8 is provided, as shown in FIG. By fitting the formwork 4 between the contact surface 2 of the jig 1 and the locking protrusion 8 so that The jig and the formwork can be easily integrated without using adhesive or the like. Furthermore The invented jig has an L-shaped cross section with a bent upper end 9, as shown in Figure 4(a). The side plate 3 may be connected to one end of the contact plate 2. This type of side plate The jig 1 equipped with It is also possible to grasp and pull the bent upper end 9 of the side plate 3 when dismantling it. The formwork can be peeled off.

0010 The material of the invented jig has the strength to withstand the tensile force during demolition and is similar to concrete. Any material can be used as long as it is durable against pouring and hardening, specifically aluminum, iron, etc. Materials such as metal, plastic, and paper can be used. Also, contact plates and tension side plates. The thickness is usually about 0.3 to 0.5 mm. The jig of this invention is a lightweight type whose core material is plastic foam, honeycomb core, etc. It is most effective when applied to frames, but can also be applied to plywood formwork and conventionally known formwork. Needless to say. In addition, the jig of this invention is not limited to only the formwork that needs to be removed first. It may also be installed and used in other formworks. When we investigated the number of reuses of lightweight formwork using the jig shown in Figure 1, we found that it was not possible to use the jig. The number of times the lightweight formwork was reused was 2 times on average, but the average number of times was 7 times, which has dramatically improved. This result is comparable to the number of reuses for regular plywood formwork, which is 6 to 8 times. It was colorless.

[0011]

[Effect of the idea]

As explained above, the formwork peeling jig of the present invention has the above-mentioned contact plate and the tension side. Since the formwork is equipped with at least a board, the concrete of the formwork to be removed is Place the contact plate in close contact with the appropriate location on the construction surface, and make sure that the tension side plate protrudes from the formwork surface. Simply install it in the By doing so, the formwork can be easily and quickly removed from the concrete structure surface. can. Also, when pulling the jig for disassembly, the abutting plate will be placed on the concrete pouring surface of the formwork. Because the formwork is held in place by contacting a part of the As a result, there is no risk of damaging or destroying the formwork. Also this invention As mentioned above, the jig has a simple structure, and its installation and formwork peeling work are extremely simple. It is convenient to handle because it can be used to Therefore, if the formwork is dismantled using the jig of this invention, damage to the formwork can be prevented. At the same time, the formwork can be used repeatedly without reducing the number of times it can be used. It can be effectively reused, and the cost associated with the formwork can be reduced.

[Brief explanation of drawings]

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

2 is an explanatory diagram showing an example of the use of the jig shown in FIG. 1, in which (a) shows the installation state of the jig before disassembly, and (b) shows the state of stripping work during disassembly.

FIG. 3 shows another embodiment of the present invention, in which (a) is a perspective view of a jig, and (b) is a cross-sectional view showing the jig installed in a formwork.

FIG. 4 shows another embodiment of the present invention, in which (a) is a perspective view of a jig, and (b) is a longitudinal sectional view showing the jig installed in a formwork.

[Explanation of symbols]

1 Formwork peeling jig 2 Contact plate 3 Tension side plate 4 Formwork for concrete pouring 5 Side of formwork 7a Concrete frame surface

Claims (1)

[Scope of utility model registration request] [Claim 1] A jig for peeling a concrete casting formwork from a hardened concrete frame surface during dismantling, the jig comprising: a contact plate that comes into contact with a part of the concrete casting surface of the formwork; 1. A formwork stripping jig, comprising at least a tensioning side plate that is connected to a contact plate, stands up along the side surface of the formwork, and has a length that projects from the surface of the formwork.