JPH0227000Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a formwork connector for supporting and fixing polygonal foamed plastic formwork stacked in multiple stages in alignment with a slope.

The cast-in-place frame construction method takes more time to construct than the block method that uses precast members, but it is used when a stable slope can be obtained, a steep slope is accompanied by spring water, a long slope, or the soil quality is not good. It serves to stabilize the slope and prevent the collapse of the slope surface layer when rock formations such as joints and cracks are developed, or when floating stones cannot be stopped by concrete spraying.

By the way, this cast-in-place frame construction method is generally carried out by installing formwork on the slope and pouring mortar (including concrete), and the material of the formwork greatly affects workability and cost. It had been. In other words, some formwork has traditionally been made of steel plates so that they can be reused.
Not only is this expensive, but it is also very heavy, so even carrying it up is labor intensive, especially when constructing on steep slopes, and the workability is also quite poor.

In addition, cardboard molds have been developed as lightweight and easy-to-work formwork, but because they are made of cardboard, they absorb water when mortar hardens, significantly inhibiting the strength of the mortar after hardening. However, this is especially a problem in the summer. Furthermore, because the insulation properties are poor, the moisture in the poured mortar may freeze in the winter, and the required strength is often not achieved and it is often unable to function as a framework, especially in the winter. It was impossible to carry out any work in extremely cold regions such as the San'in region, Hokuriku region, or Hokkaido.

In view of the above points, the inventor of the present invention utilized foamed plastic with heat insulating and water-retaining properties as formwork for the slope, and by further dividing it, it could be constructed into various sizes, and the undulations of the slope could be adjusted. The company has already filed a patent application (Japanese Patent Application No. 120,637/1982) for a formwork that can be easily made to fit the shape of a frame and a method for constructing a legal frame using this formwork.

However, with the formwork related to existing patent applications, the height of the frame to be constructed is limited. That is, since the height of the form itself is determined by the performance of the extrusion molding machine, it is not possible to construct a high slope depending on the slope and undulations of the slope. For this reason, in order to build the legal frame high, it was necessary to use a formwork constructed by stacking formwork constituent pieces in multiple stages.

Therefore, as a result of intensive research, the inventor of the present invention improved the conventional formwork connectors, thereby making it possible to connect the formwork components stacked in multiple tiers together, as well as connect and support the formworks. Developed the tool.

The formwork connector according to the present invention is used together with a formwork retaining pin, and is supported and fixed to the formwork by the formwork retainer pin and the support part provided on the formwork connector, and the formwork is mutually connected. By interposing this formwork connector in between, the formworks can be laid in alignment on the slope.

Of course, the formwork connector according to the present invention can be used not only to connect the formwork component pieces obtained by dividing the formwork, but also to connect the formwork as a whole. If so, there are no limitations on its size or shape.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1a is a perspective view showing an embodiment of the formwork connector 1 according to the present invention.

This formwork connector 1 has four insertion portions 2 at each end, and each insertion portion 2 has an insertion portion 3 at its tip. Support portions 5 are provided at both ends of the main body 4,
The support portion 5 determines the distance between the formworks 6. In other words, as shown in FIG. 1b, the insertion portion 2 is inserted into the insertion hole 7 provided on each side of the foamed plastic formwork 6, which is constructed by stacking the foamed plastic in multiple stages.
is inserted until the support part 5 contacts the formwork 6, and the formwork retaining pin 8 is inserted into the insertion part 3 provided at the tip of the insertion part 2 to support and fix the formwork connector 1 to the formwork 6. This is how it was done. In this case, the frame edge 12 is provided to ensure stable fixing by the formwork fixing pins 8 and to serve as a reinforcing material for the formwork 6 itself.

As shown in FIG. 2, most of the formwork 6 laying surface of the slope 9 has concave or convex portions, so the formwork 6 to be laid on the slope 8 cannot all be lined up in a straight line. If only the formwork connector 1 having the above-mentioned shape is used, it is unavoidable that the formwork 6 will be strained at the connection points, and the formwork 6 may be greatly deformed or damaged, etc., which may shorten the lifespan of the formwork 6. This will shorten it significantly.

For this reason, if at least one of the supporting parts 5 at both ends of the main body 4 is provided non-perpendicularly in the vertical direction of the main body 4 as shown in FIG. 6 can be connected.
In addition to the trapezoidal shape shown in this figure, it goes without saying that the present invention also includes a parallelogram shape.

Further, reference numeral 10 denotes a reinforcing bar support part, which attaches a bar 11 to the main body 4 and supports and fixes the reinforcing bar to that part. The bars 11 are effective in increasing the strength of the formwork connector 1, but the strength can be further increased by attaching the bars 11 in an X-shape as shown in FIG. 4a. However, as shown in FIG. 4b, it is also possible to provide a recess in the main body 4 and use this as the reinforcing bar support part 10.

What is shown in this example is just an example,
For slopes 9 having various shapes, it is possible to accommodate any slope 9 by using trapezoidal or parallelogram-shaped formwork connectors 1 inverted vertically and horizontally.

Here, as shown in FIG. 5, only one insertion part 2 may be provided at both ends of the formwork connector 1, corresponding to each stage of the formwork 5. Of course, two or more insertion portions 2 may be inserted through the formwork 5 of each stage, or different numbers may be provided at both ends of the formwork connector 1.

As described above, the formwork connector according to the present invention is capable of reliably supporting and fixing formwork stacked in multiple stages using the support part provided on the formwork connector and the formwork retaining pin. It is possible to firmly connect the formwork of the tiers to construct a high-height slope frame, and it is possible to extremely easily lay the slope frame along the undulations of the slope, and the formwork itself is not strained. This has the extremely beneficial effect of increasing the frequency of reuse, which greatly contributes to cost reduction.

[Brief explanation of the drawing]

Figure 1a is a perspective view showing an embodiment of the formwork connector according to the present invention, Figure 1b is a sectional view showing the formwork connector fixed to the formwork, and Figure 2 is a perspective view showing an embodiment of the formwork connector according to the present invention. FIG. 2 is a side view showing an example of a usage state. Figure 3a,
4b is a perspective view showing another embodiment of the present invention, and FIGS. 4a and 4b are perspective views respectively showing other embodiments of the present invention. Further, FIG. 5 is a perspective view showing still another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Formwork connector, 2... Insertion part, 3... Insertion part, 4... Main body, 5... Support part, 6... Formwork, 7
... Insertion hole, 8 ... Formwork retaining pin, 9 ... Slope, 1
0... Reinforcing bar support part, 11... Bar material, 12... Frame end thick.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Formwork made of foamed plastic stacked in multiple tiers that is installed on a slope and constructed by pouring mortar, the formwork is placed on the slope. It is fixed and supports a plurality of formworks at a constant distance from each other, and is inserted into insertion holes provided at the upper and lower parts of the frame forming surface of each stage of the formwork. Insertion parts are arranged at both ends of the main body, and a formwork retaining pin inserted into the insertion part provided at the tip of the insertion part and at least one of the two ends of the main body support the formwork non-perpendicularly in the vertical direction with respect to the main body. A formwork connector characterized in that the formwork is supported and fixed by a support part. 2. The formwork connector according to claim 1 of the utility model registration claim, wherein the main body has a reinforcing bar support portion.