JPH0117445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing concrete products, which allows concrete products to be easily manufactured in a narrow space using a concrete formwork with pallets and a forklift.

Concrete products such as U-shaped grooves are manufactured by pouring concrete into a concrete form and removing the mold after curing and hardening the poured concrete. It will be moved as appropriate. However, in the past, this movement of concrete formwork was carried out by placing the concrete formwork on a trolley that moved on rails laid within the factory, which required a site for the rails, and This method had the disadvantage of high construction costs due to the installation of rails and crane equipment for placing the concrete formwork on the trolley. Furthermore, since the conventional demolding means uses a vacuum device to pull up the concrete product from within the concrete formwork, the construction cost is further increased due to the equipment for the vacuum device.

Therefore, as mentioned above, this invention
It is an object of the present invention to provide a manufacturing method that can eliminate the drawback of high construction costs due to the necessity of installing a crane device and a vacuum device, and can manufacture similar concrete products at low construction costs. Therefore, the gist of the present invention is to pour a concrete product into a concrete formwork with a pallet fixed to the bottom, and after the concrete is cured, a rotating fork of a forklift is inserted into an insertion hole formed in the pallet. The method of manufacturing a concrete product includes inserting a claw, rotating a rotating fork of the forklift, inverting the concrete formwork, and removing the concrete product from the concrete formwork. Therefore, since the concrete formwork can be moved and the concrete product can be removed from the mold simply by using a forklift, the above object can be achieved.

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

1 to 3, one embodiment of the concrete form used in the present invention is shown, and the concrete form 1 is composed of, for example, four forming frames 2 arranged in parallel for forming individual concrete products. is,
These molding frames 2 are made up of four molding plates 3 and two side plates 4 fixed to both sides thereof.

The molded plate 3 is a single iron plate bent.
For example, side parts 3b, 3b are formed on both sides of the inverted U-shaped molded part 3a, and concrete is poured between the molded part 3a and the side parts 3b, 3b.
In this example, a U-shaped groove is formed;
The shape of this forming plate 3 is determined depending on the concrete product to be manufactured, and various concrete products can be formed therein. On the other hand, the two side plates 4, 4
are provided so as to face each other in the longitudinal direction of the concrete formwork 1, and are connected via, for example, three screw rods 5, so that they can move in opposite directions. That is, screws in opposite directions are formed on both sides of the screw rod 5, and the screws of the screw rod 5 are screwed into screw holes 6 formed in the side plates 4, 4. By rotating 5, the side plates 4, 4 can be moved in opposite directions. A plurality of regulating portions 7 are provided on the side plates 4, 4 so as to protrude inwardly, and the regulating portions 7 of the side plates 4, 4 are provided as push portions provided on the outside of the side portions 3b, 3b of the molded plate 3. 8 is pressed, so that the side portions 3b, 3b of the molded plate 3 are urged to open outward. Therefore,
Now, when the screw rod 5 is rotated and loosened from the illustrated state, the side plates 4, 4 move in the direction away from each other, and as the side plates 4, 4 move, the regulating part 7
The side parts 3b, 3b are shifted from the push part 8, and the side parts 3b,
3b is de-energized and spread outward, making it easy to demold the concrete product.

A pallet 9 is fixed to the bottom of the concrete formwork 1, and specifically, as shown in FIG. 10,1
1 is tightened and fixed with bolts 12 and nuts 13. This pallet 9 has an insertion hole 1.
4, 14 are formed, and these insertion holes 14, 1
4 is a forklift 15 as shown in FIG.
The pawl 17 of the rotating fork 16 can be inserted.

Therefore, in the present invention, a concrete product is manufactured using the concrete formwork 1 to which the pallet 9 is fixed.
Concrete is poured into each forming frame 2, and the concrete is cured for a predetermined period of time to harden. The movement of concrete from the place where concrete is poured into the concrete formwork 1 to the place where it is cured is carried out by inserting the claws 17 of the rotating fork 16 of the forklift 15 into the insertion holes 14, 14 of the pallet 9, as shown in FIG. It will be done. Next, after the concrete is cured, the concrete formwork 1 is similarly moved to a place for demolding using a forklift 15. and,
With the concrete formwork 1 lifted, the rotating fork 16 of the forklift 15 is rotated to turn the concrete formwork 1 180 degrees and lower it to the ground again.
Next, the screw rod 5 is loosened and the side plates 4, 4 are moved to release the bias on the side parts 3b, 3b of the molded plate 3. Then, as shown in FIG. 5, a gap is created between the side parts 3b, 3b of the forming plate 3 and the concrete product 18, and when the pallet 9 is lifted again by the forklift 15, the concrete product 18 can be easily demolded. It is something that

In addition, in this example, concrete formwork is explained as one in which a plurality of concrete products are manufactured using one formwork, but this is not limited to a single formwork that manufactures one concrete product at a time (for example, No. 43255)
Alternatively, a suitable number of pallets may be placed and fixed on the pallet.

As described above, according to the invention, a pallet is fixed to the bottom of the concrete formwork, the insertion hole into which the claw of the rotating fork of the forklift is inserted, and the concrete formwork with the pallet and the forklift Since concrete products can be manufactured by freely moving and rotating the concrete products, concrete products can be easily manufactured even in a narrow space without using special equipment, and factory construction costs can be reduced. It can be done.

[Brief explanation of drawings]

Figures 1 to 3 show concrete formwork with pallets used in this invention, and Figure 1 is a plan view;
Figure 2 is a front view, Figure 3 is an enlarged side view of the fixed part of the pallet, Figure 4 is a sectional view showing the same concrete formwork with the pallet as above lifted by a forklift, and Figure 5 FIG. 2 is a side view showing the state of the concrete product after it has been demolded. 1... Concrete formwork, 9... Pallet, 1
4, 14...insertion hole, 15...forklift,
16... Rotating fork, 17... Claw, 18... Concrete product.

Claims (1)

[Claims] 1. Pour concrete into a concrete formwork with a pallet fixed to the bottom, and after curing this concrete, insert the claw of a rotating fork of a forklift into the insertion hole formed in the pallet,
A method for producing a concrete product, which comprises rotating a rotating fork of the forklift to invert the concrete formwork and removing the concrete product from the concrete formwork.