JP2922341B2 - Bending free formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork used in an on-site spraying method which is a kind of a method for stably protecting a slope.

[0002]

2. Description of the Related Art In the on-site spraying method in a method for stably protecting a slope, a wire mesh or plate formwork is assembled in a grid on the slope, and mortar, concrete, or the like is sprayed between the formwork. Is building.

[0003] In this case, the form is thickened or a reinforcing plate or the like is attached to the form so that the form is not bent and deformed by the load of the mortar or the like that is cast. Measures have also been taken, such as increasing the number of spacers that support the formwork.

[0004]

Problems to be solved by such a deformation preventing means are that the formwork is heavy, the cost is increased, and the work efficiency is deteriorated due to the difficulty in workability. .

[0005] Further, the conventional formwork is assembled along a reinforcing bar arranged in a grid or in accordance with the shape of the slope in accordance with the standard of the formwork to be constructed. In many cases, it takes time to perform the processing and the framework work cannot be performed as planned.

The present invention was conceived in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide an efficient mold using minimum necessary materials, that is, a lightweight and lightweight mortar or the like. An object of the present invention is to provide a metal frame for a legal frame having a large bending strength without bending.

Another object of the present invention is to be able to assemble in a free form on site by means of a bent portion provided in advance, to conform to both the pre-assembly method and the post-assembly method, An object of the present invention is to provide a metal legal formwork that can be transported in a folded state, in addition to having a small number of cutting operations and excellent workability.

According to the present invention having the above object, the sectional shape is U
A metal material having a required length formed in a V-shape or a V-shape is formed into a partially bendable cross beam having a bent portion at a required position, and a plurality of the cross beams are formed at required intervals. Leave the bent portions in the same position in the vertical direction and arrange them in parallel, and connect the horizontal rails to each other with the vertical rails so that the horizontal length that can be bent from the bent portion by each bent portion at the same position In the form of a lattice-shaped formwork.

Another feature of the present invention is that a vertical bar connecting a plurality of horizontal rails to each other is provided movably with respect to the horizontal rail except for a part thereof, and the support interval of the horizontal rail is arbitrarily set. It can be adjusted, and furthermore, the vertical cross member is provided so as to protrude from the opening edge side of the horizontal cross member inside the formwork, and the outside of the form is formed flat by the closed side edge of each horizontal cross member. is there.

[0010]

[Operation] In the above configuration, since the cross-section of the crosspiece is formed in a U-shape or the like and the interior is empty, it is lightweight while being made of metal and has a large secondary section modulus. The bending stiffness to the side is large, and the stiffness in the vertical direction is maintained by the vertical bars at predetermined intervals. Sufficiently withstands loads such as spray mortar.

Further, since the opening side edge is used as the inner side, the mortar enters into each cross beam, and the connection between the cross beam and the spray mortar or the like becomes more tight.

Furthermore, since the supporting position can be arbitrarily changed by shifting the vertical cross member laterally, even if the dimension is changed by cutting, the supporting interval can be adjusted according to the dimension, and the bending can be performed. In addition to changing the lateral shape of the formwork by means of a part, the formwork can be performed, and a long formwork can also be folded flat and transported.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a cross beam, which is made of a metal material having a required length and a U-shaped or V-shaped cross section formed by pressing a strip-shaped thin metal plate. The central portion of the cross beam 1 is left as a bent portion 2 in a plate shape.

Reference numeral 3 denotes a vertical bar made of metal.
One side edge is provided with fitting ports 4 and 4 for fitting with one opening edge at predetermined intervals.

Reference numeral 5 denotes a horizontally long formwork comprising the horizontal beam 1 and the vertical beam 3, which are slightly widened downward, and the bent portions 2 are arranged in the same position to be parallel in the vertical direction. The arranged six horizontal rails 1, 1 are connected to each other at predetermined locations by inner seven vertical rails 3, 3 inserted from the ends of the horizontal rails 1, 1, and are connected at the same position. Are assembled in a lattice shape having a bent portion 6 formed by the bent portions 2 and 2 at the center.

As shown by a chain line in FIG. 1, such a formwork 5 can be freely bent laterally from a central bent portion 6, and can be folded flat when transported.

As shown in FIGS. 2 and 3, the form 5 carried into the site is installed in parallel on the slope with the opening side edge inside, and provided near the vertical cross members 3, 3. It is possible to assemble into a flat mold with the outer sides of each crosspiece 1, 1 integrally connected by the spacer 7 in the formed frame.

In order to adjust the dimensions of the formwork 5 from the relationship of the frame on the slope, the vertical crosspiece 3 at the end is moved inward by the cutting dimension, and the vertical crosspiece 3 is used as a guide for the horizontal crosspiece. Lumber 1,
One extra length can be cut. After the adjustment of the dimensions by this cutting, the movement of the vertical crosspieces 3 is removed except for a part, and the support interval and the position of the spacer 7 can be adjusted based on the new dimensions.

As shown in FIG. 3, adjacent forms are connected to each other by connecting the vertical bars 3 at the ends of adjacent forms to each other with a wire 8.
The joint plate 8 can be bound together, or a bendable joint plate 8 can be fitted to the end of the formwork.
or by using a.

In the form having the bent portion 6 at the center, as shown on the right side of FIG. 4, the form can be bent from the center and used as a corner form at the intersection of the reinforcing bars 9. If necessary, as shown on the left side of FIG. 4, a pair of bent formwork 5 and 5 can be faced to form a quadrilateral enclosure formwork, and further as a corner formwork as shown in FIG. Can also be used.

As shown in FIG. 6, in the mold 5a having the bent portions 6 provided at two locations, the molds surrounding the three sides are formed by one mold 5a by bending the two locations. Therefore, by setting the position, interval, number, and the like of the bent portions 6 in advance, a frame such as an L-shape or a U-shape can be performed in addition to the above.

[0022]

As described above, the present invention employs a metal material of a required length formed in a U-shaped or V-shaped cross section as a cross beam of a mold, and partially folding the metal material. Since the crosspiece 1 is formed to be bendable and has a bent portion 2 at a required position, even if it is made of metal, the inside is empty, so that the weight is reduced as a whole, and transportation and framing work is performed. It becomes easy to handle.

Also, a plurality of the horizontal rails 1 are arranged in parallel with the above-mentioned bent parts 2 and 2 in the vertical direction at a required interval,
Further, the horizontal rails 1 and 1 are connected to each other by the vertical rail 3 so as to form a horizontally long lattice-shaped formwork that can be bent from the bending portion 6 formed by the bending portions 2 and 2 at the same position. Therefore, the bending rigidity to the side is increased by the cross bar 1 having a large secondary section modulus as compared with the conventional cross bar, and the rigidity in the vertical direction is also maintained by the vertical cross bar 3, so that the formwork is lightweight. Also, it does not bend and deform due to the load of the spray mortar or the like.

Further, since the opening side edge is used as the inner side, the mortar enters into each cross beam and the connection between the cross beam and the spraying mortar and the like becomes more tight, so that harmfulness at the time of spraying is increased. While the discharge of the re-band and the air is discharged from the gap, the mortar and the like are easily retained between the crosspieces, and the riding of the mortar and the like is improved.

Further, the vertical crosspieces for connecting the plurality of horizontal crosspieces to one another are sufficient by disposing them at the mounting positions of the spacers and at both ends of the horizontal crosspieces, so that the weight and cost can be reduced. In addition, since the vertical cross bar is provided movably with respect to the horizontal cross bar except for a part, the support interval of the horizontal cross bar can be adjusted arbitrarily, and even if the dimensions are changed by cutting the extra length at the site, The support interval can be adjusted according to the size.

Further, since the vertical crosspiece is provided to protrude from the opening side edge of the horizontal crosspiece inside the formwork, and the outside of the form is formed flat by the closed side edge of each horizontal crosspiece, the mold is formed. Trowel finishing such as mortar protruding outside the frame can be performed smoothly.

Since the long mold can be folded flat by the bent portion, the conveyance becomes easy in combination with the above-mentioned weight reduction. In addition, since the form can be freely bent to the side by the bent part, the intersection and the corner part can be constituted by the bent part of one sheet of the form, and the bent part is provided for each standard dimension. In such a case, the setting of the formwork on the slope is not restricted, such as by connecting the formwork end portions to easily assemble the enclosure formwork of the standard size. Can be freely set according to the arrangement of reinforcing bars, so that there are many advantages such as the work efficiency of the framework is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a bendable legal form form according to the present invention.

FIG. 2 is a side view of a legal frame constructed using the legal form mold according to the present invention.

FIG. 3 is an end plan view of the legal frame.

FIG. 4 is a schematic plan view showing two frame states of a legal frame.

FIG. 5 is a schematic plan view showing a frame state of a corner portion of the legal frame.

FIG. 6 is a schematic plan view showing a state where three sides of a legal frame are framed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal crosspiece 2 Horizontal crosspiece bending part 3 Vertical crosspiece 4 Fitting port 5 Formwork 6 Formwork bending part 7 Spacer 8 Joint plate 9 Reinforcing bar

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidetoshi Moezuka 2-34-14 Higashiyukiya, Ota-ku, Tokyo (56) References: Rinko Sho 62-23869 (JP, Y2) Rinko Sho 62-23870 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁶ , DB name) E02D 17/20 104

Claims (3)

(57) [Claims] 1. A cross beam 1 having a required length formed in a U-shaped or V-shaped cross-section so as to be partially bendable and having a bent portion 2 at a required position. The horizontal beam 1
Are vertically spaced at predetermined intervals.
Are arranged in parallel at the same position, and the horizontal rails 1 and 1 are connected to each other by the vertical rail 3 so as to be able to bend from the bending part 6 by the bending parts 2 and 2 at the same position. A bendable formwork formwork characterized by being configured in a lattice formwork. 2. A vertical rail connecting a plurality of horizontal rails to each other, except for a part thereof, is provided movably with respect to the horizontal rails, and a support interval of the horizontal rails can be adjusted arbitrarily. A bendable formwork formwork according to claim 1. 3. A vertical crosspiece connecting a plurality of horizontal crosspieces to each other is provided so as to protrude from an opening side edge of the horizontal crosspiece inside the formwork, and the outside of the formwork is formed by a curved surface of each horizontal crosspiece. 3. The bendable formwork formwork according to claim 1, wherein the formwork is formed flat.