JP2920048B2 - Concrete 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 concrete formwork for placing, for example, cloth-based concrete.

[0002]

2. Description of the Related Art In general, for example, when casting a cloth foundation concrete, a plurality of concrete forms are combined in a lateral direction. Each concrete form is provided with a forming plate, and side plates are attached to both left and right sides. This formed plate is formed of an iron plate.

[0003]

However, since the above-mentioned conventional formed plate is formed of an iron plate, the weight increases, and the concrete easily adheres to the forming surface of the formed plate after the concrete is cast. Therefore, it was necessary to apply a release agent to the molding surface before placing concrete.

[0004] It is an object of the present invention to provide a concrete formwork which can reduce the weight of a molded plate and does not require applying a release agent before placing concrete.

[0005]

According to the first aspect of the present invention, a molded plate is formed of a resin material to achieve the above object.
The upper and lower horizontal side plates are integrally formed by bending the resin material on both the upper and lower sides, and metal vertical side frames are attached to the left and right sides of the molded plate.

According to a second aspect of the present invention, in order to achieve the above object, in the first aspect, horizontal reinforcing ribs are further formed integrally on the outer edges of the upper and lower horizontal side plates in a direction approaching each other. That means.

According to a third aspect of the present invention, in order to achieve the above object, in the first or second aspect,
A connecting rod for connecting concrete forms to each other is reciprocally mounted, and a U-shaped fitting is attached to the connecting rod to clamp and fix both vertical side frames of the joined formwork to each other. I am taking.

[0008] In order to achieve the above object, the invention according to claim 4 provides a method according to any one of claims 1 to 3, wherein
Means is adopted in which the formed plate is constituted by an inner formed plate made of aluminum and an outer formed plate made of a resin material adhered to the surface thereof.

[0009]

According to the first aspect of the present invention, since the molded plate is made of resin, the weight is reduced, and the molded plate is easily peeled off from the concrete after the concrete is cast. The work of applying to the molding surface becomes unnecessary.

According to the second aspect of the present invention, since the horizontal reinforcing ribs are further integrally formed on the outer edges of the upper and lower horizontal side plates, the strength of the formed plate is improved. According to the third aspect of the present invention, in addition to the operation of the first or second aspect, the connecting work between the concrete forms can be easily performed by the connecting rod and the U-shaped fitting attached to the vertical side frame.

Further, in the invention according to claim 4, since the formed plate is constituted by the inner formed plate made of aluminum and the outer formed plate made of a resin material adhered to the surface thereof, the weight of the mold is reduced. Can be. In addition, since the outer molded plate is made of a resin material, there is no need to apply a release agent to the molding surface before casting concrete.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. The molded plate 1 is formed of a resin material having high corrosion resistance to concrete, and upper and lower horizontal side plates 1a and 1b are integrally formed at upper and lower end edges thereof. Vertical side frames 2 and 3 made of an iron square pipe or an iron plate are provided on the left and right sides of the rear surface of the formed plate 1.
Is attached. Although not shown, the molded plate 1 is fixed to the side frames 2 and 3 by engaging a screw or an engaging concave portion with an engaging convex portion. The two vertical side frames 2 and 3 are formed by bending a single iron plate or formed by a flattened rectangular pipe.

The vertical frames 2 and 3 have through holes 2a and 3a at a plurality of positions in the vertical direction. This hole 2
A connecting rod (not shown) is passed through a and 3a in a state where the molds are joined to each other, and both vertical side frames 2 and 3 joined to each other by a U-shaped bracket (not shown) attached to the connecting rod. It is clamped and fixed.

In the concrete formwork configured as described above, since the molded plate 1 is made of a resin material, the weight can be reduced. In addition, since concrete is easily peeled off from the molded plate 1, it is possible to prevent the concrete from adhering to the molded surface of the molded plate 1 without applying a release agent to the molded surface of the molded plate 1 in advance, and to perform a cleaning operation. It can be done easily.

Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, the first
In the embodiment, horizontal reinforcing ribs 1c and 1d are further formed vertically and integrally with the outer edges of the upper and lower horizontal side plates 1a and 1b in a direction approaching each other. For this reason, the strength of the molded plate 1 is improved.

Next, a third embodiment of the present invention will be described with reference to FIGS. Vertical side frames 2 and 3 made of an iron square pipe or an iron plate are attached to the left and right sides of the back surface of the molded plate 1 made of the resin of this embodiment.
The two side frames 2 and 3 are formed by bending one iron plate, and mounting plates 4 and 5 that are fixed to the back surface of the forming plate 1 are formed by bending at one corner. Through holes 4a, 5a are formed at the upper, middle, and lower portions of the mounting plates 4, 5, respectively.
A plurality of locking pins 1e integrally formed on the back surface of
a and 5a, the distal end portion of the locking pin 1e is heated and melted to form a head as shown in FIG. It is fixed.

In order to connect the concrete frames to each other, a mounting bracket 6 is fixed to the back surface of the forming plate 1, and a through hole 6a penetrated through the mounting bracket 6 and the side frame 2, The connecting rod 7 is supported through the through-holes 2a and 3a penetrating the reciprocating member 3 so as to reciprocate in the left-right direction. Further, a U-shaped fitting 8 for holding the vertical side frames 2 and 3 of the two mold frames joined to each other is attached in the middle of the connecting rod 7.

In the concrete formwork configured as described above, since the molded plate 1 is made of a resin material, the weight can be reduced. In addition, since concrete is easily peeled off from the molded plate 1, it is possible to prevent the concrete from adhering to the molded surface of the molded plate 1 without applying a release agent to the molded surface of the molded plate 1 in advance, and to perform a cleaning operation. It can be done easily. Further, in this embodiment, since the connecting rod 7 and the U-shaped bracket 8 are mounted by the vertical side frame 2 and the mounting bracket 6, the connecting work between the frames can be easily performed as compared with the frame without the U-shaped bracket. Can be done.

Next, a fourth embodiment of the present invention will be described with reference to FIG. In this embodiment, the forming plate 1 is constituted by an inner forming plate 11 made of aluminum and an outer forming plate 12 made of resin adhered to the surface thereof. The outer formed plate 12 may be a sheet-shaped or an extruded plate. Other configurations are the same as those of the third embodiment.

In the fourth embodiment, the molded plate 1 is composed of the lightweight inner molded plate 11 made of aluminum and the lightweight molded outer plate 12 made of resin, so that the weight can be reduced. In addition, since the molding surface of the molding plate 1 is made of resin, it is possible to suppress the adhesion of concrete and to easily perform the cleaning operation.

Next, a fifth embodiment of the present invention will be described with reference to FIG. In this embodiment, horizontal reinforcing ribs 1c, 1b are provided on outer edges of upper and lower horizontal side plates 1a, 1b of the formed plate 1.
d is integrally formed by bending. The assembling of the side frames 2 and 3 is performed from both left and right sides of the formed plate 1. Other configurations are the same as those of the third embodiment.

In the fifth embodiment, both horizontal reinforcing ribs 1c,
1d, the strength of the molded plate 1 can be increased. The present invention is not limited to the above embodiment, but can be embodied as follows.

(1) As shown in FIG. 8, a reinforcing plate 1f is formed integrally on the back surface of the molded plate 1 in the vertical direction, or as shown in FIG. 9, a reinforcing plate 1g is formed integrally in the horizontal direction. , And furthermore, as shown in FIG.
To form 1g integrally. The reinforcing plates 1f, 1
To embody the configuration of g in another embodiment.

(2) As shown in FIG. 11, mounting plates 13 and 14 are bent at upper and lower ends of a vertical side frame 2 formed of a square pipe, and the mounting plates 13 and 14 and the horizontal side plates 1a and 1b are screwed. 15 or studs (not shown).

(3) As shown in FIG. 12, the molded plate 1 is formed of a honeycomb-shaped resin plate having a space therein. (4) The forming plate 1 and the inner forming plate 11 are drawn or extruded.

(5) In the above-described embodiment, the vertical side frames 2 and 3 are formed of a square pipe or a plate material, but an angle material or the like is used instead. (6) As a connection structure between the formed plate 1 and the vertical side frame, screw holes or drill holes into which screws are screwed are formed on the upper and lower end surfaces of the side frames 2 and 3, and the screws are formed from the horizontal side plates 1a and 1b. Screw into the hole.

(7) The configuration of the molded plate 1 shown in FIG. 6 is embodied in another embodiment.

[0028]

As described in detail above, the invention according to claim 1 can reduce the weight of the concrete formwork and eliminate the need for the operation of applying a release agent before casting concrete. There is an effect that can be done.

Further, in the invention of claim 2, in addition to the effect of the invention of claim 1, there is an effect that the strength of the formed plate can be improved. According to the third aspect of the invention, in addition to the effects of the first or second aspect of the invention, the work of connecting the concrete forms can be easily performed.

Further, the invention according to the fourth aspect has the effects that the weight of the concrete formwork can be reduced and the work of applying a release agent in advance before placing concrete is unnecessary.

[Brief description of the drawings]

FIG. 1 shows a first concrete formwork embodying the present invention.
It is a perspective view showing an example.

FIG. 2 is a perspective view of a concrete formwork of a second embodiment.

FIG. 3 is a perspective view of a concrete formwork showing a third embodiment.

FIG. 4 is an exploded perspective view of a concrete formwork of a third embodiment.

FIG. 5 is a longitudinal sectional view of a concrete formwork of a third embodiment.

FIG. 6 is a perspective view of a concrete formwork showing a fourth embodiment.

FIG. 7 is a perspective view of a concrete formwork showing a fifth embodiment.

FIG. 8 is a perspective view showing another example of the present invention.

FIG. 9 is a perspective view showing another example of the present invention.

FIG. 10 is a perspective view showing another example of the present invention.

FIG. 11 is a partial front view showing another example of the present invention.

FIG. 12 is a partial perspective view showing another example of the present invention.

[Explanation of symbols]

Reference numeral 1: molded plate, 1a (1b): upper (lower) horizontal side plate, 1
c, 1d: horizontal reinforcing ribs, 2 (3): vertical side frame, 4
(5) mounting plate, 6 mounting bracket, 7 connecting rod, 8 U-shaped bracket, 11 inner molded plate, 12 outer molded plate.

Claims (4)

(57) [Claims] 1. A molded plate is formed of a resin material, upper and lower horizontal side plates are integrally formed by bending the resin material on both upper and lower sides thereof, and metal vertical side frames are attached to left and right sides of the molded plate. A concrete formwork characterized by that: 2. The concrete formwork according to claim 1, wherein horizontal reinforcing ribs are further formed integrally on the outer edges of the upper and lower horizontal side plates in a direction approaching each other. 3. The formwork according to claim 1, wherein a connecting rod for connecting the concrete formwork to each other is reciprocally mounted on the vertical side frame, and the formwork joined to the connecting rod is connected to the vertical formwork. A concrete formwork having a U-shaped fitting for holding and fixing both vertical side frames to each other. 4. The method according to claim 1, wherein
A concrete formwork comprising: an inner formed plate made of aluminum; and an outer formed plate made of a resin material adhered to the surface thereof.