JP6912077B2 - Formwork device - Google Patents

Description

The present invention relates to a formwork device for manufacturing linear, doglegged, and even curved concrete products such as arches.

Conventionally, as a formwork device of this type, for example, Japanese Patent Application Laid-Open No. 6-60497 (Patent Document 1) describes a bottom inner / outer formwork, a side inner / outer formwork, and an arch inner / outer formwork in a method for manufacturing a concrete arch calvert. By using, both sides of the bottom inner formwork and the arch outer formwork can be opened and closed, and a formwork with a concrete injection hole at the top of the arch outer formwork is assembled, and this formwork is placed under the bottom formwork. Then, first, open the bottom inner formwork, inject concrete into the bottom formwork from here and fill it tightly, close the inner formwork, then inject concrete from the top of the arch part, and inside the side formwork. Is filled with concrete, and then concrete is injected from the injection hole at the top to fill the arch formwork with concrete.

However, in the formwork of the technique shown in Patent Document 1, since the width of the arch and the radius of curvature of the arch cannot be changed, it is necessary to make the formwork for each product having a different width and radius of curvature. Especially in the case of large structures such as tunnels and bridges, not only the production of formwork but also the disposal is expensive, which has been a problem.

Therefore, in Japanese Patent Application Laid-Open No. 2000-337092 (Patent Document 2), in a method for manufacturing a precast concrete arch-shaped unit plate in which tops are joined to each other to form an arch structure, a joining member is attached to the top of the arch-shaped unit plate. There is disclosed a duct in which a duct is provided to allow the arch structure to be inserted, and the size of the top portion in the width direction is adjusted according to the width of the arch structure to be molded.

Special Fair 6-60497 Gazette Japanese Unexamined Patent Publication No. 2000-337092

However, even with the patented technology as shown in Patent Document 2, although it is possible to standardize the molding formwork corresponding to the width, in order to manufacture products having different radii of curvature, the formwork is still made for each product. I needed it.

The present invention has been made in view of such a problem, and although it is a single formwork device, it can be applied to curved concrete products such as arches having various widths and radii of curvature, as well as thickness and angle. It is an object of the present invention to provide a formwork device capable of corresponding to a desired linear or doglegged concrete product by enabling such changes.

The formwork device according to claim 1 of the present invention has a molding surface 7 in contact with a concrete product, enables concave or convex warp deformation, and deforms plates 2 (inside and outside) provided on both inner and outer sides of the concrete product. Outer mold 2A, inner mold 2B),
A plurality of deformation regulating portions 8 provided at a surface opposite to the molding surface of the deforming plate 2 and arranged at predetermined intervals in order to regulate the convex warp deformation of the deforming plate 2.
A space formed between the deformation regulating portions 8 and a flexible allowable portion 9 that allows the deformation regulating portion 8 to move,
A pair of support portions 11 attached to the deformation restricting portion 8 and an operation portion 12 for adjusting the distance between the support portions 11 are provided, and a plurality of deformation operation mechanisms 10 for bending the deformation plate 2 in a concave or convex shape. Consists of
It is characterized in that at least a part of the deformed plate 2 is warped and deformed by the deformation operation mechanism 10 to produce an arch-shaped, linear, or doglegged concrete product.

In claim 1, the formwork device according to claim 2 of the present invention is detachably provided between the support portions 11 of the deformation operation mechanism 10 or the flexible allowable portion 9, and the bending angle of the deformation plate 2. It is characterized by providing stoppers 6A and 6B that limit the amount of deformation of the deforming plate 2 so that the temperature is 7 degrees or less.

In the formwork device according to the present invention, when manufacturing a concrete product, by operating the operation parts of a plurality of deformation operation mechanisms, the pair of support parts supporting the operation parts move in the approaching direction or the pulling direction. However, the deformed plate is warped and deformed in a concave or convex shape. Further, since a plurality of the deformation operation mechanisms are provided, the deformation plate can be bent into either a concave shape or a convex shape at a plurality of places of the deformation plate, and one mold device can be used for various widths, radii of curvature, and shapes. It is capable of manufacturing concrete products.

Further, in the formwork device according to the present invention, by attaching a removable stopper between the support portions of the deformation operation mechanism, it is possible to limit the deformation of the deformation plate more than necessary. That is, the bending angle of the deformed plate can be limited to 7 degrees or less in consideration of durability and the like.

Further, in the mold apparatus according to the present invention, on the surface opposite to the molding surface of the deformable plate, a plurality of deformation restricting portions for regulating the convex warp deformation of the deformable plate are formed between the deformation restricting portions. A flexible part that allows movement of the deformation restricting part is formed, a support part of the deformation operation mechanism is provided in the deformation controlling part, and a removable stopper is attached between the flexible part. .. Then, by attaching this stopper, it is possible to limit the deformation of the deformable plate more than necessary. That is, the bending angle of the deformed plate can be limited to 7 degrees or less in consideration of durability and the like.

The formwork device according to the present invention manufactures arch-shaped, linear, or dogleg-shaped concrete products .

That is, in the case of manufacturing an arch-shaped concrete product, a predetermined radius of curvature is formed by attaching a stopper to the deformable plate of the formwork located outside the arch between the support portions of the deformation operation mechanism or the flexible allowable portion. A desired arched concrete product can be obtained by warping and deforming the deformed plate located inside the arch into a convex shape having a predetermined radius of curvature. ..

Further, in the case of manufacturing a straight or doglegged concrete product, by attaching a stopper between the support portions of the deformation operation mechanism or between the flexible allowable portions, it is possible to prevent the deformable plate from being deformed more than necessary. The thickness of the product can be made constant. By changing the size of the stopper, it is possible to make a part of the concrete product thicker or thinner.

In this way, since it is possible to handle concrete products of various dimensions and shapes even though it is a single formwork device, it is not necessary to prepare various types of formwork for each concrete product. It is possible to provide various concrete products such as curved, straight, and doglegged concrete products such as arches at low cost.

FIG. 1 is a perspective view of a formwork device for manufacturing an arched concrete product having a large radius of curvature. FIG. 2 is a perspective view of a formwork device for manufacturing an arched concrete product having a small radius of curvature. FIG. 3 is a perspective view of a formwork device for manufacturing a linear concrete product in which a part of a deformed plate is shaped like a dogleg. FIG. 4 is a perspective view of a deformed plate showing a linear state. FIG. 5 is a perspective view of a deformed plate showing a state of being warped and deformed in a concave shape. FIG. 6 is a perspective view showing a deformed plate in a state of being warped and deformed in a convex shape. FIG. 7 is a perspective view of the parts constituting the formwork device. FIG. 8 is a perspective view showing a state in which a large number of inner and outer stoppers are stacked. FIG. 9 is an enlarged perspective view of a part of the deformed plate. FIG. 10 is an enlarged perspective view of a part of the back surface of the deformed plate. FIG. 11 is a perspective view showing a deformation operation mechanism provided on the back surface of the deformation plate. FIG. 12 is a perspective view showing the deformation operation mechanism. FIG. 13 is a perspective view showing an inner / outer stopper used for the flexible allowable portion.

Although it is a single formwork device, it enables the production of curved concrete products having different radius of curvature, for example, arched concrete products, and also the production of straight and doglegged concrete products, and the thickness of these concrete products. Can also be changed at a desired position. This eliminates the need to prepare various types of formwork when manufacturing concrete products that meet customer requirements and standards, and has realized a formwork device that can significantly reduce the manufacturing cost of concrete products. .. Hereinafter, examples of the present invention will be described with reference to the drawings.

1 to 3 show the formwork device 1 of the present invention, FIG. 1 is a formwork device 1 for manufacturing an arched concrete product having a large radius of curvature, that is, a gentle curve, and FIG. 2 shows a formwork device 1 having a radius of curvature. It shows a formwork device 1 for manufacturing a small, i.e., sharply curved arched concrete product. Further, FIG. 3 shows a formwork device 1 for manufacturing a linear concrete product in which a part of the deformed plate 2 is shaped like a dogleg.

First, a formwork device 1 for manufacturing an arched concrete product will be described. The formwork device 1 for manufacturing the arch-shaped concrete product shown in FIGS. 1 and 2 is a deformation in which the deformed plate 2 shown in FIG. 5 is warped and deformed in a concave shape and is deformed in a convex shape shown in FIGS. The plate 2 is used as the inner mold 2B, and further includes end plates 3 and 3 for forming the end portion of the concrete product.

Further, as shown in FIG. 7, the outer gauge 4A for making the outer mold 2A a desired radius of curvature, the inner gauge 4B for making the inner mold 2B a desired radius of curvature, and the front or back surface of the concrete product are molded. The seat plate 5 and the inner / outer stoppers 6A and 6B for holding the deformed plate 2 at a radius of curvature matched to the inner / outer gauges 4A and 4B are provided. , Seat plate 5, inner / outer stoppers 6A, 6B are necessary parts each time.

FIG. 8 shows a state in which a large number of inner / outer stoppers 6A and 6B are stacked, and in order to obtain a desired radius of curvature, it is necessary to prepare a large number of inner / outer stoppers 6A and inner stoppers 6B having the same dimensions.

Next, the configuration of the deformable plate 2 will be described with reference to FIGS. 9 to 12.
The deformed plate 2 has a molded surface 7 in contact with a concrete product on one surface, and a plurality of deformation restricting portions 8 are arranged at predetermined intervals on the surface opposite to the molded surface 7. The deformation restricting portion 8 has a box shape that opens downward, and a flexible allowable portion 9 that allows the deformation restricting portion 8 to move in the approaching direction or the separating direction is formed between the adjacent deformation regulating portions 8. ..

Further, as shown in FIGS. 10 to 12, the deformation regulating portion 8 is provided with a deformation operating mechanism 10, and the deformation operating mechanism 10 is a support portion 11 attached to the deformation regulating portion 8 by welding. And an operation unit 12 provided between the adjacent support portions 11 and moving the support portions 11 in the approaching direction or the separating direction.

The support portion 11 includes two side plates 13 attached to the deformation restricting portion 8, and between the side plates 13 are internal and external stoppers 6A for restricting movement of the support portions 11 in the proximity direction. A stopper mounting portion 14 for detachably mounting 6B is provided.

Further, the operating portion 12 includes a rotating portion 15A, 15B rotatably attached between the side plates 13, an adjusting bolt 16 for inserting the rotating portion 15A, 15B, and a head 18 of the adjusting bolt 16. It is composed of a nut 17 provided on the opposite side of the rotating portion 15A.

The nut 17 is welded and fixed to the screw portion 19 of the adjusting bolt 16, and a through hole is formed in the rotating portion 15A to make the adjusting bolt 16 rotatable at a predetermined position. Further, the rotating portion 15B on the opposite side is subjected to female screw processing in which the screw portion 19 of the adjusting bolt 16 is screwed.

Such a deformation operation mechanism 10 may be arranged in a straight line, but it is desirable that the deformation operation mechanism 10 is arranged alternately for each set so that it is easy to work when turning the adjusting bolt 16.

When an arched concrete product is manufactured with the above configuration, the linear deformed plate 2 of FIG. 4 is warped and deformed into the concave shape shown in FIG. 5 in order to form the outer mold 2A. At this time, it is bent according to the outer gauge 4A in order to obtain a desired radius of curvature.

In order to bend the deformable plate 2 in accordance with the outer gauge 4A, that is, to deform the concave warp, the adjusting bolt 16 of the operating portion 12 is turned in a direction in which the support portions 11 and 11 are separated from each other, and when the deformation plate 2 is sufficiently separated, the outer portion 12 is formed. The stopper 6A is attached to the stopper mounting portion 14. After that, the adjusting bolt 16 of the operating portion 12 is turned in a direction approaching until the space between the supporting portions 11 and 11 is regulated by the outer stopper 6A, so that the deformed plate 2 has an appropriate angle.

By the above operation, the deformation restricting portions 8 move in a direction away from each other together with the support portion 11, and the deformation plate 2 bends at a predetermined angle. It is desirable that this bending angle be 7 degrees or less in consideration of the durability of the deformed plate 2. Then, by performing such an operation with the plurality of deformation operation mechanisms 10, the deformation plate 2 is warped and deformed into a desired concave shape, and can be used as the outer mold 2A.

Further, in order to form the inner mold 2A, the linear deformation plate 2 of FIG. 4 is warped and deformed into the convex shape shown in FIG. At this time, it is bent according to the inner gauge 4B in order to obtain a desired radius of curvature.

In order to bend the deformable plate 2 in accordance with the inner gauge 4B, that is, to deform the convex warp, the adjusting bolt 16 of the operating portion 12 was once turned in the direction in which the support portions 11 and 11 were separated from each other, and sufficiently separated. By the way, the inner stopper 6B is attached to the stopper mounting portion 14. After that, the adjusting bolt 16 of the operating portion 12 is turned in a direction approaching until the space between the supporting portions 11 and 11 is regulated by the inner stopper 6B, so that the deformed plate 2 has an appropriate angle.

By the above operation, the deformation restricting portions 8 move in the direction of approaching each other together with the support portion 11, and the deformation plate 2 bends in a convex shape at a predetermined angle. It is desirable that this bending angle be 7 degrees or less in consideration of the durability of the deformed plate 2. Then, by performing such an operation with the plurality of deformation operation mechanisms 10, the deformation plate 2 is warped and deformed into a desired convex shape, and can be used as the inner mold 2B.

In this way, the deformed plate 2 is warped and deformed in a concave or convex shape to form the outer mold 2A and the inner mold 2B, and these inner and outer molds 2A and 2B are fixed to the floor plate 20 by magnet fixing or bolting, and the seat plate 5 and the end plate are fixed. By installing 3, the formwork device 1 is configured. Then, ready-mixed concrete is poured into the space surrounded by the inner and outer molds 2A and 2B, the end plate 3 and the seat plate 5 of the formwork device 1, and compacted with an inner vibrator to manufacture an arched concrete product.

Reference numeral 23 denotes an upright holding plate for holding the upright position of the inner / outer molds 2A and 2B. It contributes to the prevention of twisting of the inner and outer molds 2A and 2B.

In the above description, the inner / outer stoppers 6A and 6B are attached to the stopper mounting portions 14 of the deformation operating mechanism 10, but the flexible allowing portions 9 formed between the adjacent deformation restricting portions 8 are flexible as shown in FIG. Inner / outer stoppers 21A and 21B for the allowable part may be attached. The inner / outer stoppers 21A and 21B for the flexible allowable portion also regulate the movement of the deformation regulating portion 8 in the same manner as the above-mentioned inner / outer stoppers 6A and 6B.

Further, the inner / outer stoppers 21A and 21B for the flexible allowable portion are formed with insertion holes 22 through which bolts are inserted to prevent them from falling off, and when they are attached, they are fixed with bolts together with the deformation regulating portion 8. It is a thing.

Next, a formwork device 1 for manufacturing a linear concrete product in which a part of the deformed plate 2 has a dogleg shape, which is shown in FIG. 3, will be described. This linear formwork device 1 is used as the inner and outer molds 2A and 2B by deforming a part of the deformed plate 2 shown in FIG. 4 into a concave shape or a convex shape, and is used for forming an end portion of a concrete product. It is provided with an L-shaped end plate 22.

Further, it is provided with a seat plate for molding the front surface or the back surface of a concrete product, a gauge (not shown) for forming the deformed plate 2 into a predetermined shape, and inner / outer stoppers 6A and 6B for forming a curved portion. The end plate 22, the gauge, the seat plate, and the inner / outer stoppers 6A and 6B are necessary parts each time.

In the case of manufacturing a linear concrete product in which a thick portion and a thin portion are formed by forming a part of the deformed plate 2 into a dogleg shape like the concrete product shown in FIG. 3 with the above configuration. Unlike the above arched concrete product, the outer mold 2A and the inner mold 2B are used in which only a part of the deformable plate 2 shown in FIG. 4 is deformed and the other parts are straight lines.

Regarding the deformation of the outer mold 2A, only the portion of the deformation plate 2 to be bent is warped and deformed in a concave shape by using the deformation operation mechanism 10. That is, the adjusting bolt 16 of the operating portion 12 is turned in a direction in which the support portions 11 and 11 are separated from each other, and when the support portions 11 and 11 are sufficiently separated, the outer stopper 6A is attached to the stopper mounting portion 14. After that, the adjusting bolt 16 of the operating portion 12 is turned in a direction approaching until the space between the supporting portions 11 and 11 is regulated by the outer stopper 6A, so that the deformed plate 2 has an appropriate angle. By the above operation, the deformation restricting portions 8 move in a direction away from each other together with the support portion 11, and the deformation plate 2 bends at a predetermined angle.

Instead of attaching the inner / outer stoppers 6A and 6B between the support portions 11, the inner / outer stoppers 21A for the flexible allowable portion as shown in FIG. 13 are formed on the flexible allowable portions 9 formed between the adjacent deformation restricting portions 8. 21B may be attached. The inner / outer stoppers 21A and 21B for the flexible allowable portion also regulate the movement of the deformation regulating portion 8 in the same manner as the above-mentioned inner / outer stoppers 6A and 6B.

Then, as in the above description, the deformable plate 2 is warped and deformed in a loosely convex shape to form the inner mold 2B, and these inner and outer molds 2A and 2B are fixed to the floor plate 20 by magnet fixing or bolting, and the seat plate 5 and L-shape are formed. The mold device 1 is configured by installing the end plate 22 of the mold. Then, ready-mixed concrete is poured into the space surrounded by the inner and outer molds 2A and 2B, the end plate 22, and the seat plate 5 of the formwork device 1, and compacted with an inner vibrator to manufacture a linear concrete product.

As described above, in the present invention, since the deformable plate 2 can be deformed into a desired shape by operating the above-mentioned deformation operation mechanism 10, it is not only linear, doglegged or arched, but also S-shaped. It is also possible to manufacture curved concrete products such as.

Further, the formwork device 1 of the present invention may be disassembled and brought to the construction site of the concrete product to manufacture the concrete product at the site. In this case, the deformation plate 2 of the formwork device 1 is cut at the center between adjacent deformation points, that is, between the adjacent deformation operation mechanisms 10, and is connected at the site with a connector such as a bolt.

As described in detail above, according to the present invention, the formwork device 1 has a deformed plate 2 which has a molding surface 7 in contact with a concrete product and enables concave or convex warp deformation, and molding of the deformed plate 2. A plurality of deformation operation mechanisms 10 provided on the opposite surface of the surface 7 to warp the deformation plate 2 in a concave or convex shape, and the deformation operation mechanism 10 includes a pair of support portions 11 provided on the deformation plate 2. It is composed of an operation unit 12 for adjusting the distance between the support portions 11.

As a result, when manufacturing a concrete product, by operating the operation units 12 of the plurality of deformation operation mechanisms 10, the pair of support portions 11 supporting the operation units 12 move in the approaching direction or the pulling direction. The deformation plate 2 is warped and deformed in a concave or convex shape. Further, since a plurality of the deformation operation mechanisms 10 are provided, the deformation plate 2 can be bent into either a concave shape or a convex shape at a plurality of places of the deformation plate 2, and one mold device 1 has various widths and curvatures. It is possible to manufacture concrete products with radius and shape.

Further, by attaching removable stoppers 6A and 6B between the support portions 11 of the deformation operation mechanism 10, it is possible to limit the deformation of the deformation plate 2 more than necessary.

Further, on the surface opposite to the molding surface 7 of the deformable plate 2, a plurality of deformation restricting portions 8 for regulating the convex warp deformation of the deformable plate 2 and a space formed between the deformation restricting portions 8. Therefore, a flexible allowable portion 9 that allows the deformation of the deformation restricting portion 8 is formed, a support portion 11 of the deformation operating mechanism 10 is provided on the deformation restricting portion 8, and a stopper that can be attached and detached between the flexible restricting portions 9. 21A and 21B are attached. Then, by attaching the stoppers 21A and 21B, it is possible to limit the deformation of the deformation plate 2 more than necessary.

Then, in the case of manufacturing an arch-shaped concrete product, the deformation plate 2 (outer mold 2A) of the formwork located outside the arch is placed between the support portions 11 of the deformation operation mechanism 10 or between the deformation control portions 8. By attaching stoppers 6A, 6B, 21A, and 21B to the flexible allowable portion 9, the deformable plate 2 (inner mold 2B) located inside the arch can be warped and deformed into a concave shape having a predetermined radius of curvature. A desired arched concrete product can be obtained by warping and deforming the concrete into a convex shape having a predetermined radius of curvature.

Further, in the case of manufacturing a linear or doglegged concrete product, stoppers 6A, 6B, 21A and 21B are provided between the support portions 11 of the deformation operation mechanism 10 or between the deformation control portions 8 and the flexible allowable portions 9. By attaching the deformed plate 2, it is possible to prevent the deformed plate 2 from being deformed more than necessary, so that the thickness of the concrete product can be made constant. Further, by changing the sizes of the stoppers 6A, 6B, 21A, and 21B, it is possible to make a part of the concrete product thicker or thinner.

As described above, since it is possible to deal with concrete products having various dimensions and shapes even though it is one formwork device 1, it is not necessary to prepare various types of formwork for each concrete product. It is possible to provide various concrete products such as arches, curved lines such as S-shapes, straight lines, and doglegs that meet the demand at low cost.

1 Formwork device 2 Deformation plate 2A Outer mold 2B Inner mold 6A Outer stopper 6B Inner stopper 7 Molding surface 8 Deformation control part 9 Deformation allowance part 10 Deformation operation mechanism 11 Support part 12 Operation part 16 Adjustment bolt 21A For flexibility allowance part Outer stopper 21B Inner stopper for flexible part

Claims (2)

A deformed plate that has a molded surface in contact with the concrete product and enables concave or convex warping deformation, and is provided on both the inner and outer sides of the concrete product.
A plurality of deformation regulating portions provided at a surface opposite to the molding surface of the deformed plate and arranged at predetermined intervals in order to regulate the convex warp deformation of the deformed plate.
A space formed between the deformation restricting portions, which is a flexible allowable portion that allows movement of the deformation regulating portion, and
It is provided with a pair of support portions attached to the deformation restricting portion and an operation portion for adjusting the distance between the support portions, and comprises a plurality of deformation operation mechanisms that warp the deformation plate in a concave or convex shape.
A formwork device characterized in that at least a part of an arched, linear, or doglegged concrete product is manufactured by warping and deforming the deformed plate by the deforming operation mechanism. It is provided with a stopper that is detachably provided between the support portions of the deformation operation mechanism or the flexible allowable portion and limits the amount of deformation of the deformable plate so that the bending angle of the deformable plate is 7 degrees or less. The formwork device according to claim 1.

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