JPH072175Y2 - Mother formwork for concrete trough production - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete trough-manufacturing formwork for pouring and solidifying fluidized concrete to manufacture a trough.

[0002]

2. Description of the Related Art As a mother formwork for manufacturing a concrete trough of this type, there has been one such as that described in Japanese Utility Model Publication No. 35-7950, which is shown in FIGS.
, A front side plate 4 provided with a recess 5 for forming a socket projection 2 for connecting the concrete trough 1 in its longitudinal direction, and a socket recess 3 for connecting the concrete trough 1 in its longitudinal direction. The rear side plate 6 provided with the convex portion 7 for forming, the inner frame 8 having a substantially U-shaped cross section, and the left side plate 9 and the right side plate 10 having a substantially L-shaped cross section are fastened by bolts 11 and nuts 12. After being integrally assembled to form a formwork, concrete in a fluid state is poured into the formwork to solidify, and then the bolts 11 and the nuts 12 are removed to disassemble the formwork and a concrete trough as a product. I'm trying to take out 1.

[0003]

However, in the conventional concrete trough manufacturing mother formwork as described above, it is necessary to assemble and disassemble the formwork each time the concrete trough 1 is manufactured, which is troublesome. However, it was wasteful in terms of time, which led to a decrease in productivity.

In view of the above situation, the present invention provides a mother trough manufacturing mold for concrete troughs, which saves time and effort for assembling and disassembling the molds during manufacturing of the concrete troughs, thereby improving productivity. It is the one we are trying to provide.

[0005]

According to the present invention, a box-shaped outer frame having a bottom plate, front and rear side plates, and left and right side plates having an open upper surface is provided on each inner surface of the left and right side plates from the bottom plate side to the upper end opening side. Tapered portions that are inclined in directions away from each other are formed, and on the bottom plate of the outer frame, the outer surfaces of the left and right side plate portions that form an upright portion having a substantially U-shaped cross section are directed toward the open end side. The open end side of the inner frame, which is formed with a taper portion that is inclined in the separating direction, is integrally fixed so that gaps are formed between the front and rear end portions of the inner frame and the front and rear side plates of the outer frame. Form a main body of the mold, and an intermediate plate member having a convex portion for forming a socket concave portion for connecting a concrete trough is detachably provided in one of the gap portions of the main body of the mold body, while the other gap portion is formed. Has a recess for forming a socket protrusion for connecting the concrete trough It is characterized in the provision of the intermediate plate member detachably.

[0006]

Therefore, at the time of manufacturing the concrete trough, the intermediate plate member is inserted into one of the gaps of the mold body, and the intermediate plate member is inserted into the other gap of the mold body. When the concrete is set and solidified and the concrete is solidified and the mold body is turned upside down, tapered parts are formed on the inner surfaces of the left and right side plates of the outer frame and the outer surfaces of the left and right side plates of the inner frame. Therefore, the molded concrete trough and the intermediate plate members located at the front and rear ends of the concrete trough are easily separated from the formwork body together, and then the intermediate plate member is removed from the concrete trough. , The production of concrete trough is completed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show one embodiment of the present invention, which comprises a bottom plate 13, a front plate 14, a rear plate 15, a left side plate 16 and a right side plate 17 and a box-shaped outer frame 18 having an open upper surface. ,
On the inner surfaces of the left and right side plates 16 and 17 of the outer frame 18, taper portions 20 and 21 that are inclined from the bottom plate 13 side toward the upper end opening 19 side in directions away from each other are formed.
On the bottom plate 13 of each of the left and right side plate portions 22 and 23, which are substantially U-shaped in cross section and form a U-shaped side-by-side standing portion, taper portions 25 and 26 that are inclined toward the open end 24 toward the outer ends.
The open end 24 side of the inner frame 27 in which the inner frame 27 is formed is connected to the front and rear end portions 28, 29 of the inner frame 27 and the front and rear side plates 14, 15 of the outer frame 18.
So as to form the required gaps X and Y, respectively, to integrally form the mold body 30, and form the mold body 30 in the gap X of the mold body 30 for connecting the concrete trough 1. An intermediate plate member 32 such as a light metal or plastic having a convex portion 31 for forming 3 is detachably provided, and
An intermediate plate member 34 such as a light metal or a plastic having a recess 33 for forming the socket protrusion 2 for connecting the concrete trough 1 is provided in the gap Y in a removable manner.

Tapered portions 20, 2 formed on the outer frame 18
1 is reinforced concrete cable trough JISA5321
Within the allowable error range (± 2 mm) (eg 150
2/1 for concrete trough of size B
20), and the tapered portions 25 and 26 formed on the inner frame 27 are set to have a slope of 3/100 or less by the reinforced concrete cable trough JIS A5321.

Next, the operation of the above embodiment will be described.

At the time of manufacturing the concrete trough 1, the middle plate member 32 is inserted into one of the gaps X of the form body 30 and the middle plate member 34 is inserted into the other gap Y of the form body 30. Pour fluidized concrete into it to solidify it.

After the concrete is solidified, the mold body 30
When these are inverted, the tapered portions 20, 21 and the tapered portions 25, 26 are formed on the inner surfaces of the left and right side plates 16, 17 of the outer frame 18 and the outer surfaces of the left and right side plate portions 22, 23 of the inner frame 27, respectively. Because there is a molded concrete trough 1
The intermediate plate members 32 and 34 located at the front and rear ends of the concrete trough 1 are easily separated from the mold body 30 together.

After that, the intermediate plate members 32 and 34 are removed from the concrete trough 1 to complete the production of the concrete trough 1.

The outer surface and the inner surface of the manufactured concrete trough 1 are respectively inclined as shown in FIG. 5, but since all of these inclinations are within the allowable error range, the concrete trough 1 There is no impact on the quality of the product.

In this way, it is not necessary to assemble and disassemble the formwork each time the concrete trough 1 is manufactured, which is required in the related art, and it is possible to eliminate waste of time and improve productivity.

The mother formwork for producing concrete trough of the present invention is not limited to the above-mentioned embodiment,
Needless to say, various changes can be made without departing from the scope of the present invention.

[0017]

As described above, according to the mother formwork for producing concrete trough of the present invention, the labor of assembling and disassembling the formwork at the time of producing the concrete trough is saved, time is not wasted, and productivity is improved. It is possible to obtain an excellent effect that the improvement can be achieved.

[Brief description of drawings]

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

FIG. 2 is a plan view showing a mother mold of one embodiment of the present invention.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is a perspective view of a concrete trough manufactured by the mother formwork according to an embodiment of the present invention.

FIG. 6 is a plan view showing a mother frame of a conventional example.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a perspective view of a concrete trough manufactured by a mother mold of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete trough 2 Socket convex part 3 Socket concave part 13 Bottom plate 14 Front side plate 15 Rear side plate 16 Left side plate 17 Right side plate 18 Outer frame 19 Opening 20 Tapered part 21 Tapered part 22 Side plate part 23 Side plate part 24 Open end 25 Tapered part 26 Taper Part 27 Inner frame 28 Front end part 29 Rear end part 30 Formwork body 31 Convex part 32 Middle plate member 33 Recessed part 34 Middle plate member X Gap part Y Gap part

Claims (1)

[Scope of utility model registration request] 1. A taper on each inner surface of the left and right side plates of a box-shaped outer frame having an upper surface formed of a bottom plate, front and rear side plates, and left and right side plates, the taper slanting in directions away from each other from the bottom plate side toward the upper end opening side. And a cross section of approximately U is formed on the bottom plate of the outer frame.
The open end side of the inner frame, in which the taper portions are formed on the outer surfaces of the left and right side plate portions forming the U-shaped side-by-side upright portions in the directions away from each other, A mold main body is formed by integrally fixing them so that gaps are formed between the end portions and the front and rear side plates of the outer frame, and one of the gaps of the mold main body is used for connecting the concrete trough. An intermediate plate member having a convex portion for forming a socket concave portion is detachably provided, and an intermediate plate member having a concave portion for forming a socket convex portion for connecting a concrete trough is inserted into and removed from the other gap portion. A mother formwork for concrete trough production, characterized by being installed freely.