JPH0134766B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a pseudo-wood utility pole mainly used in scenic areas and the like.

In the Kansai region, the Ancient Capital Preservation Law is applied to two districts, Nara and Kyoto, but in order to preserve the environment, these areas are designated as scenic areas and structures must be built to avoid destroying the current environment. is regulated. For this reason, the current concrete utility poles used as power distribution equipment are too conspicuous, and wooden poles, which have a short service life, have no choice but to be used. However, wooden pillars require less maintenance than concrete pillars.
It costs a lot of money to inspect and prevent bird damage from woodpeckers.

In view of this point, it is an object of the present invention to provide a method for manufacturing a pseudo-wood utility pole from concrete at a low cost using a simple method as an alternative to a wooden pole.

Embodiments of the present invention will be described with reference to the drawings.
is a bark board made of synthetic resin, which is made by pouring molding resin onto a flat surface of tree bark, and peeling it off from the tree bark after it hardens.

This bark board 1 is cut to match the length and circumference of the pseudo-wood utility pole to be manufactured, and after applying a mold release agent, the bark board 1 is shaped into a U-shape with the molded surface where the wood grain appears on the inside. The lower half of the mold is pushed into a semicircular gutter-shaped lower form 2, and accessories for the lower form are attached as appropriate. This also has the purpose of preventing movement of the bark board 1 in the lower formwork 2. When cutting the bark board 1, it is necessary to take into account the shrinkage of the bark board 1, and when pushing the bark board 1 into the lower formwork 2, the U-shaped curved tip should be It is important that it protrudes above the lower formwork 2 at the same time.

Next, a reinforcing bar cage 3 is placed inside the lower formwork 2 with a predetermined distance between it and the lower half of the bark board 1 pushed into the lower formwork 2. After arranging the reinforcing bar cage 3, the tip of the bark board 1 protruding upward from the lower formwork 2 is curved, and a semicircular gutter-shaped upper mold is formed at a predetermined interval above the reinforcing bar cage 3. The frame 4 is overturned, the upper and lower formworks 4 and 2 are fastened to each other with appropriate bolts (not shown) to form a frame, and the accessories on the upper formwork side are then attached. In this case, the part of the bark board 1 that protrudes upward from the lower formwork 2 has a length corresponding to the inner circumference of the upper formwork 4, so this part is located between the upper and lower formworks 4 and 2. Be careful not to get caught.

In such a case, the bark board 1 is deformed along the inner circumferential surface of the upper formwork 4, and when the lower formwork 2 and the upper formwork 4 are joined, the bark board 1 is completely deformed along the upper and lower formworks 4 and 2. It is pasted on the inside of the.

Next, concrete is poured into the assembled forms 2 and 4 and centrifugally formed by a known method. After forming, the concrete is cured and solidified.

Next, after removing the accessory attachment fittings attached to the upper and lower formworks 4 and 2, the bolts fastening the upper and lower formworks 4 and 2 are removed to remove the mold.

The outer periphery of the demolded product is covered with the bark board 1, so with the seam of the bark board 1 facing up, peel off the bark board all the way around while rolling the product from one side of the seam. . The product from which the bark board 1 has been removed will still have traces of the seams of the bark board 1, so we will repair and finish that area and other necessary parts.In the case of colored poles, we will apply a sealer finish and then finish the process. Attach the caps for the mouth and base to complete the product.

In addition, in the above example, concrete was filled into the formwork by centrifugal force forming, but the present invention is not limited to this, and it is also possible to fill the formwork with concrete by a filling method. can. However, in this case, the formwork is doubled with the reinforcing bar cage 3 in between, and concrete is filled between them.

The artificial wood telephone pole manufactured as described above has a wood grain-like pattern on its surface, so it looks like a wooden pole at first glance, and when used in the following places, there is no risk of destroying the surrounding environment. Expected to be effective.

ΓEnvironmental conservation areas (mainly mountainous areas) ΓPark areas that require an aesthetic appearanceΓ Areas with particularly large numbers of trees in the city centerΓOther areas that require an aesthetic appearance As described above, the present invention is based on the following: A resin for molding is poured onto it, and after it hardens, it is peeled off from the bark to make a bark board.The bark board is cut into a predetermined shape and size and curved into a U-shape, and the lower half is shaped like a gutter. At the same time, a reinforcing bar cage is placed inside the lower half of the bark board at a predetermined distance from the lower half of the bark board, and while the upper half of the bark board is curved, the reinforcing bar cage is A gutter-shaped upper formwork is placed over the lower formwork at a predetermined interval above, and the upper and lower formworks are fastened together to form a frame, and then concrete is poured into the frame to form the reinforcing bar cage. Filling and molding on the inner and outer surfaces,
This relates to a method for manufacturing a pseudo-wood telephone pole, which is characterized by separating the upper and lower formwork after curing and hardening, and then peeling off the bark board. First, resin is poured onto the peeled bark to form a flat bark board. As a result, it is easy to handle and can be easily and accurately placed together with a reinforcing bar cage in the formwork of a long fake wood utility pole, making manufacturing easier. Compared to this method, only tree bark is used, and since the tree bark is spread on a flat surface and resin is poured on top of it to make a mold, it is easier to peel the resin bark plate from the bark that has been spread on a flat surface. In addition, it can be peeled off with the surface shape of the bark transferred as it is without losing its shape, and the planar shape of the bark can be set in advance to an appropriate size, making it possible to adjust the diameter and length of the fake tree to be manufactured. Accordingly, a bark board of any width and length can be obtained, and a pseudo-wood telephone pole of a desired size can be easily manufactured. In addition, the pseudo-wood utility pole manufactured by this method has only one seam of bark boards in the vertical direction, and has a very beautiful appearance. Furthermore, the manufacturing cost of the resin plate is very low, and therefore the product cost is not much higher than that of ordinary concrete utility poles.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; Fig. 1 is a perspective view of a bark board, Fig. 2 is a perspective view of the bark board set in the lower formwork, and Fig. 3 is a perspective view of the bark board set in the lower formwork. A perspective view showing a reinforcing bar cage placed inside the set bark board, Figure 4 is a perspective view showing a state in which the upper formwork has been overturned, and Figure 5 is a perspective view showing a state in which the upper and lower formworks are assembled using centrifugal force forming. Perspective view showing the state in which concrete is poured and the inner and outer surfaces of the reinforcing bar cage are filled with concrete, No. 6
The figure is a perspective view showing concrete molded, cured and then removed from the mold, FIG. 7 is a perspective view showing a bark board removed from the product, and FIG. 8 is a perspective view of the product. 1...bark board, 2...lower formwork, 3...reinforced cage,
4... Upper formwork.

Claims (1)

[Claims] 1 Spread bark on a flat surface, pour resin for molding onto it, and after solidifying, peel it off from the bark to make a bark board, cut the bark board into a specified size, curve it into a U-shape, and place the mold under it. The half part is pushed into a gutter-like lower formwork, and a reinforcing bar cage is placed inside the lower half of the bark board at a predetermined distance, and then the upper half of the bark board is set. The gutter-like upper formwork is placed over the lower formwork at a predetermined interval above the reinforcing bar cage while being curved, and the upper and lower formworks are fastened together to form a frame, and then concrete is placed on the frame. A method for manufacturing a pseudo-wooden telephone pole, which comprises injecting and filling the inner and outer surfaces of a reinforcing bar cage, curing and hardening, then separating the upper and lower formwork, and then peeling off the bark board.