KR102294119B1 - Connecting apparatus and manufacturing method for assembly concrete pole - Google Patents

Abstract

The present invention relates to a connection device for a prefabricated concrete pole that can improve the productivity of the pole by curing and producing a plurality of poles in the process of one mold using a mold member, and more particularly, It is made in the shape of a coupling hole formed in the center of the diameter, and a coupling member in which a plurality of radial first through holes through which a steel wire is inserted around the coupling hole is formed, and a disc shape having a predetermined diameter, the coupling member and An insertion member disposed to face each other and having an insertion column inserted into the coupling hole in a shape-fitting manner in the central portion thereof, and having a second radial through hole through which the steel wire is inserted with the center of the insertion column perforated; A clamp made of two separable powders that are fixed by pressing so that the joint of the coupling member and the insertion member is not separated in a state in which the insertion column is inserted into the coupling hole, and a disc shape having a predetermined diameter, the central portion of the diameter A hollow portion for coupling to each of the coupling member and the insertion member is perforated, and after the clamp is separated, the coupling member and the insertion member are coupled to each other through a fastening means so that a pair of electric poles can be connected to each other It is characterized in that it includes a flange provided.

Description

Connecting apparatus and manufacturing method for assembly concrete pole using the same

The present invention relates to a connecting device for a prefabricated concrete pole that can improve the productivity of the pole by curing and producing a plurality of poles in the process of one mold using a mold member, and a method for manufacturing an pole using the same.

In general, a column-shaped concrete pole is a structure for installing and extending electric wires or communication lines. Conventional electric poles are widely used in single-piece concrete poles in the form of a single column.

However, the single-piece concrete poles as described above are generally used in length of 16m, but there are difficulties in transporting and constructing them to a narrow construction site due to the length and weight problems. And for the convenience of construction, a concrete pole of a bolted flange connection method that can be assembled in two stages is used.

However, the prefabricated concrete pole of the flange connection method used for connection as described above has a protruding flange structure with respect to the joint. It is a two-mold production method, and there is a problem in that productivity is extremely low compared to the single-piece type pole produced in the existing one-mold.

Domestic Registered Patent No. 10-0130527 (Announcement Date: 1998.04.17.) Domestic Patent Publication No. 10-2019-31956 (published on March 27, 2019)

In order to solve the above-mentioned problems of the prior art, the connection device of the prefabricated concrete pole according to the present invention is manufactured simultaneously in one process, not the multi-mold production method in which the prefabricated poles composed of two or more stages are produced in separate molds, respectively. The purpose is to provide a connecting device for producing an electric pole connector with increased productivity by a one-mold production method.

In order to solve the above technical problem, the connecting device of the prefabricated concrete pole according to the present invention is made in the shape of a disk having a predetermined diameter, and a coupling hole is perforated at the center of the diameter, and a steel wire is inserted through the coupling hole. A coupling member in which a plurality of radial first through-holes are perforated, and a disc shape having a predetermined diameter are disposed to face the coupling member, and an insertion column inserted into the coupling hole in a shape-fitting manner is formed at the center of the diameter of the coupling member, , An insertion member having a second through-hole in a radial form through which the steel wire is inserted through the center of the insertion column, and a joint between the coupling member and the insertion member in a state in which the insertion column is inserted into the coupling hole is not separated It is made of a clamp made of two separable powders fixed by pressure and fixed in a disc shape having a predetermined diameter, and a hollow part for coupling to the coupling member and the insertion member, respectively, is formed in the center of the diameter, and the clamp is separated. Thereafter, the coupling member and the insertion member are coupled to each other through a fastening means, and a flange is provided so that a pair of electric poles can be connected to each other.

In addition, it is preferable that a first protrusion tube is formed at an end of the coupling member, and a second protrusion tube is formed to protrude symmetrically to the first protrusion tube at the end of the insertion member.

In addition, in the coupling member, a first extension protrusion is formed to protrude from a surface facing the insertion member, and the insertion member has the same shape as the first extension protrusion when inserted into the coupling member. It is preferable that a second extension protrusion is formed so as to form a part, and a pressing groove is formed on the outer surface of the clamp by inserting the first extension protrusion and the second extension protrusion to prevent the opening of the joint.

In addition, the end of the steel wire is penetrated and fixed to the first through hole or the second through hole through which the steel wire is inserted, respectively. It is preferable to further include.

According to the present invention, a plurality of electric poles are cured and produced through a coupling member, an inserting member and a clamp in a single mold process differently from the prior art, thereby having an effect of improving the productivity of the electric pole.

1 is a view showing a connection device of a prefabricated concrete pole according to the present invention.
2 is a view showing a coupling member and an insertion member for the connecting device of the prefabricated concrete pole according to the present invention.
3 is a view showing an arrangement relationship with respect to FIG.
Figure 4 is a view showing a clamp for the connection device of the prefabricated concrete pole according to the present invention.
Figure 5 is a view showing a coupling relationship using a clamp with respect to Figure 2;
Figure 6 is a view showing a flange for the connection device of the prefabricated concrete pole according to the present invention.
7 is a view showing a coupling relationship using a flange with respect to FIG.
8 is a view showing a fixing pipe of a steel wire to the connecting device of the prefabricated concrete pole according to the present invention.
9 is a flow chart showing a method of manufacturing a pole using the connecting device of the prefabricated concrete pole according to the present invention.
10 to 15 are views sequentially showing the manufacturing relationship with respect to FIG.

Hereinafter, in addition to the above object, other objects and features of the present invention will become apparent through the description of the embodiments with reference to the accompanying drawings, and unless otherwise defined, all terms used herein, including technical or scientific terms, are It has the same meaning as commonly understood by those of ordinary skill in the art to which the invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, with reference to the accompanying drawings, a connection device for a prefabricated concrete pole according to the present invention (hereinafter, simply referred to as a 'connection device') and a method for manufacturing an electric pole using the same (hereinafter, simply referred to as a 'manufacturing method') Each will be described in detail.

First, as shown in FIGS. 1 to 8 , the connecting device 1 according to the present invention includes a coupling member 100 , an insertion member 200 , a clamp 300 , and a flange 400 .

In more detail, the coupling member 100 is fastened with a fastening means (B) such as bolts together with an insertion member 200 to be described later with reference to FIGS. 1 and 2 , and a plurality of electric poles ( This is a configuration to enable simultaneous production of P).

For example, the coupling member 100 in the present invention is formed to have the shape of a disk having a predetermined diameter as a whole, and a coupling hole 110 through which an insertion column 210 to be described later is inserted through shape matching is formed in the center of the diameter. The coupling member 100 and the insertion member 200 have a structure that can be fitted to each other.

At this time, clamps 300 to be described later are respectively inserted into the joint portions 150 of the coupling member 100 and the insertion member 200 that are fitted with each other, and the coupling member 100 and the coupling member 100 by the pressing of the clamp 300. It is preferable that the first extension protrusion 130 for the insertion member 200 to be fixedly connected to each other is formed to protrude (see FIG. 3 ).

In the outer surface of the coupling member 100, a first through hole 120 to which the steel wire W is connected is formed in a radial form around the coupling hole 110, and the first through hole 120 is a first through hole 120 to be described later. The two through-holes 220 are formed to face each other or, if necessary, the end of the steel wire (W), as well as the fixed tube (500) through which the steel wire (W) is inserted, is inserted by force fitting to form an electric pole (P). To prevent the flow of the steel wire (W) at the time.

At the end of the coupling member 100, while the electric pole (P) to be molded is cured, the outer frame is maintained, but after the electric pole (P) is installed, the connection part of the electric pole (P) is damaged from an external impact, etc. A first protruding pipe 140 having a tubular shape as a whole is formed for reinforcing it (see FIG. 2 ).

In addition, the insertion member 200 in the present invention is formed to have the shape of a disk having a predetermined diameter as a whole, and the insertion column 210 that is inserted through the coupling hole 110 inside the above-described coupling hole 110 in a central portion of the diameter protrudes. It has a structure in which the coupling member 100 and the insertion member 200 can be fitted with each other.

At this time, the joint 150 of the coupling member 100 that is fitted with the insertion member 200 and has the same shape as the above-described first extended protrusion 130 is symmetrical with the first extended protrusion 130 . A second extension protrusion 230 protruding outwardly is formed on the outer surface of the insertion column 210 so that the insertion member 200 and the coupling member 100 can be fixedly coupled to each other by the pressing of the clamp 300 . It is preferable to do so (see Fig. 3).

On the outer surface of the insertion member 200, a second through hole 220 to which the steel wire W is connected is formed in a radial form around the insertion column 210, and the second through hole 220 is the first through hole. When the ball 120 and the ball 120 are formed to face each other or, if necessary, the end of the steel wire (W), as well as the fixed tube (500) into which the steel wire (W) is inserted, is inserted through an interference fit to form the electric pole (P). To prevent the flow of the steel wire (W).

At the end of the insertion member 200, the outer frame of the electric pole P to be molded is maintained at the time of curing, but after the electric pole P is installed, the connection part of the electric pole P is damaged from external impact, etc. A second protrusion pipe 240 having an overall tubular shape is formed to have the same shape as the above-described first protrusion pipe 140 in order to reinforce that the first protrusion pipe 140 and the joint 150 contacting each other. to form (see FIG. 2).

And, the clamp 300 is 3 to 5, the insertion member 200 is inserted into the above-described coupling member 100, a pair of electric poles (P) are connected to each other before concrete curing is maintained. This is to prevent the tension of the steel wire and the concrete from being separated from each other during curing by centrifugal force.

For example, the clamp 300 in the present invention is composed of two powders having a ring shape as a whole when they are coupled to each other by forming an arc shape for easy coupling and dismounting, and a pressing groove is formed on the opposing surface of each powder. 310 is formed to have a structure into which the outer surfaces of the first and second extension protrusions 130 and 230 forming the joint 150 can be inserted.

At this time, the outer surface of the first and second extension protrusions 130 and 230 inserted into the pressing groove 310 is a clamp 300 made of two powders whose inner diameter and width are variable by the fastening means bolt B shown in FIG. 4 . It is preferable that the coupling member 100 and the insertion member 200 be fixedly coupled to each other by being pressed by the .

In addition, the clamp 300 is installed so that the coupling member 100 and the insertion member 200 can be fixedly coupled to each other before curing the electric pole P, and after curing the electric pole P, a flange 400 to be described later ) to be removed for installation (see FIG. 14).

And, referring to FIGS. 6 and 7 , the flange 400 is a coupling member 100 and an insertion member 200 in a state in which the clamp 300 is removed after curing a pair of electric poles (P). ) are connected to each other so that a pair of corresponding electric poles (P) can be assembled with each other, and a pair is provided to face each other.

For example, each flange 400 in the present invention is made of a disk shape having a predetermined diameter as a whole, and any one of the flanges 400 penetrates the first extension protrusion 130 at the center of the diameter and the coupling member 100. At the same time, the other one passes through the second extension protrusion 230 and the insertion column 210 to face the flange 400 seated on the coupling member 100 and to the insertion member 200. The hollow part 410 has a perforated structure to be seated.

In addition, in each of the pair of flanges 400 , bolts BBBB are inserted through and inserted into the fastening holes in which a plurality of perforations are formed so as to have a radial shape around the hollow part 410 , and the pair of flanges 400 are connected to each other by the fastening. It is fixedly installed so that a pair of electric poles (P) are connected to be assembled (see FIG. 15).

In addition, the coupling member 100 and the insertion member 200 by using the bolt (BB) shown in Fig. 3 to fix the nut (N) to perform a pre-step of curing the electric pole (P), the flange 400 ) is preferably fixed to the coupling member 100 and the insertion member 200 by fastening the bolt (BBB) shown in FIGS. 7 to 15 to the nut (N).

On the other hand, as shown in FIG. 8, the fixed tube 500 in the present invention is formed to have a column shape as a whole, and its outer surface is inserted so as to be press-fitted into the first or second through-holes 120 and 220, and the inside A through hole 510 through which the steel wire W is inserted is formed in the longitudinal direction.

At this time, the fixed tube 500 has a shape that becomes narrower as the diameter of its outer surface is directed downward to facilitate interference fitting, but a cutout having a predetermined interval in the longitudinal direction to communicate with the through hole 510 is formed on the outer surface of the steel wire After the fixing tube 500 is inserted into the first or second through-holes 120 and 220 in a state in which (W) is inserted, the first or second through-holes are pulled by the external force of the steel wire (W). (120,220) It is preferable to make it easy to press fit with the inner surface.

In addition, a head having a larger diameter than the outer diameter of the steel wire (W) is formed at the end of the steel wire (W) inserted into the through hole (510). to be prevented.

Hereinafter, the manufacturing method (2) according to the present invention will be described in detail with reference to the accompanying drawings. Prior to the description, it should be noted that, in order to clarify the gist of the present invention, the steel wire W is described based on a state in which the first and second through holes 120 and 220 are penetrated.

First, as shown in FIG. 9, the manufacturing method (2) in the present invention largely comprises 1) disposing the coupling member 100 and the insertion member 200 in which the steel wire W is fixedly connected to each other to face each other ( S100) and 2) a first extension protrusion 130 and a second extension protrusion 230 for inserting and fixing the inserting member 200 into the coupling member 100, but in surface contact with each other to form a joint portion 150 ) by fastening the clamp 300 to be wrapped together (S200) and fixing the coupling member 100 and the insertion member 200, 3) the coupling member 100 coupled to each other by the clamp 300 ) and the inserting member 200 are seated in the lower mold 11 having a hollow shape, and concrete is put into the lower mold 11 (S300), and 4) the lower mold into which the concrete is put ( 11) A step (S400) of seating and fixing the upper mold 13 having a hollow shape on the upper part to generate a plurality of electric poles (P) by curing the concrete after the tensile and centrifugal force processes of the corresponding steel wire (W) (S400); ) After the concrete is cured, the clamp 300 and the bolts BB are removed to separate the plurality of the electric poles (P) (S500) and 6) the coupling member provided in the separated electric poles (P) ( 100) and the insert member 200, respectively, using a bolt (BBB) to face each other and fasten the flanges 400 to the bolts (BBBB) so that a pair of the flanges 400 can be coupled to each other. A plurality of the electric poles (P) separated from each other by being coupled by a step (S600) to be connected to each other includes a step (S600).

More specifically, 1) step (S100), as shown in FIG. 10, a pair of electric poles (P) through the mold member 10 including the lower mold 11 and the upper mold 13 This is a step for installing the coupling member 100 and the insertion member 200 before curing.

For this purpose, as shown, the coupling member 100 and the inserting member 200 are maintained to face each other while maintaining the first and second penetrations formed in the coupling member 100 and the inserting member 200, respectively. The balls 120 and 220 allow the steel wire W to be inserted therethrough.

At this time, a steel wire (W) is inserted through the first and second through-holes (120, 220) through the above-described fixed tube (500) as needed, and the flow is during the tension of the steel wire (W) and curing the electric pole (P). Of course, it is desirable to prevent the escape.

Next, as shown in FIG. 11, in step 2) (S200), after step 1) (S100), the coupling member 100 and the insertion member 200 can be fixedly coupled to each other using the clamp 300 . step to make it happen.

To this end, as shown, the insertion member 200 maintains the state in which the insertion member 200 is inserted into the coupling hole 110 formed in the coupling member 100 through the insertion column 210 , but more preferably The first and second extension protrusions 130 and 230 are inserted in a state in which they are in surface contact with each other to form the joint 150 so that they can be fixed to each other by the pressing of the clamp 300 .

At this time, the clamp 300 made of two powders is installed such that the outer surfaces of the first and second extension protrusions 130 and 230 are wrapped inside the pressing grooves 310 formed on their respective outer surfaces so that the joint 150 is wrapped in a ring shape. The two powders have their inner narrow diameters changed by the fastening of the fastening means (B), so that the opening of the joint 150 can be prevented by pressing the first and second extended protrusions 130 and 230. It is desirable to have

Next, as shown in Figure 12, 3) step (S300), after 2) step (S200), the coupling member 100 and the inserting member 200 connected to each other by the clamp 300 to the lower mold 11 ), it is a step to put concrete for forming the electric pole (P) in the interior at the same time as it is settled inside.

To this end, as shown in the figure, the coupling member 100 and the insertion member 200 connected to each other by the clamp 300 are inserted into the lower mold 11 having a hollow shape but with an open upper part. Concrete (C), which is a material for forming the electric pole (P), is sufficiently introduced into the lower mold (11).

Next, as shown in FIG. 13, in step 4) (S400), after step 3) (S300), the upper mold 13 is fastened to the lower mold 11 to maintain airtightness inside the mold member 10 Concrete (C) so that the shape of the electric pole (P) can be molded by the centrifugal force by applying a tensile force to the steel wire (W) and rotating the mold member (10) by a rotating means (not shown) (not shown) It is a step for curing

To this end, as shown, the upper mold 13 is formed on the upper part of the lower mold 11 with the upper part open, and the upper mold 13 is formed in the same shape as the lower mold 11 in the direction in which the lower part is opened. to prevent leakage of the concrete (C) injected into the mold member (10).

At this time, the outer surface of the first protrusion tube 140 of the coupling member 100 and the outer surface of the second protrusion tube 240 of the insertion member 200 are in surface contact with the inner surface of the lower mold 11 and the inner surface of the upper mold 13, respectively. It is preferable to prevent the remnants of the concrete (C) from flowing into the outer surfaces of the first and second protrusions (140, 240) when the pair of electric poles (P) are molded by the centrifugal force. do.

That is, to prevent the inflow of the residue of the concrete (C) in the direction of the clamp (300) to prevent the concrete (C) from affecting the separation of the clamp (300), to maximize the effect To this end, a gasket (not shown) made of a material such as rubber is further provided on the outer surfaces of the first and second protrusions 140 and 240 to be inserted into the mold member 10 .

On the other hand, in step (S400) 4), as shown, the steel wire (W) is installed so as to be exposed to the outside of the mold member 10, but before the concrete is cured so that a pair of electric poles (P) are molded by centrifugal force. By applying an external force pulling the steel wire (W) outward, the steel wire (W) can be more firmly fixed to the coupling member 100 and the insertion member 200 .

Next, 5) step (S500), as shown in FIG. 14, after step 4) (S400), the mold member 10 is separated but the coupling member 100 and the insert member 200 are clamped ( 300) and a step for separating the bolts BB so that the pair of electric poles P can be separated from each other.

To this end, as shown, the operator separates the clamp 300 that fixed the coupling member 100 and the insertion member 200 after the concrete (C) is cured, and uses a pair of electric poles ( P) can be cured at the same time.

Furthermore, in the process of separating the clamp 300, the bolt BB for fixing the nut N installed in the coupling member 100 and the insertion member 200 is separated together with the separation of the clamp 300, and the separation is performed. The flange 400, the coupling member 100, and the insertion member 200 are coupled to each other by means of a bolt BBB to expose the nut N through the part.

Finally, as shown in Figure 15, 6) step (S600) is a step of coupling the flange 400 to assemble a pair of cured electric poles (P) after step 5) (S500).

To this end, 6) step (S600) is provided with a pair of flanges 400 after the clamp 300 is separated as shown, but any one of the flanges 400 is formed on the outer surface of the coupling member 100. One extended protrusion 130 is inserted through the hollow part 410 so that it can be seated, and the other is inserted into the flange 400 seated on the coupling member 100 and the insertion member 200 to face each other. After disposing the column 210 and the second extension protrusion 230 to be seated on the outer surface of the insertion member 200 so that the hollow part 410 can pass therethrough, the bolt BBB is fastened to the nut N to fix it. Install.

When the arrangement of the pair of flanges 400 is completed, the operator can penetrate the pair of flanges 400 through the bolts BBBB in a state in which the insertion column 210 is inserted into the coupling hole 110 . A pair of electric poles (P) cured by fastening can be connected to each other.

Of course, in the present invention, after a pair of electric poles (P) are cured through step (S600) in the present invention, they are connected to each other through a pair of flanges 400 to form one electric pole (P), However, this is one embodiment, and if necessary, a plurality of cured electric poles (P) are transported to the installation site, and connected to each other through a plurality of flanges (400) at the installation site (P) in the form of a column on the ground It is also possible to have it installed.

The connection device of the prefabricated concrete pole according to the present invention having the configuration as described above is differentiated from the prior art through a plurality of poles ( As P) is cured and produced, it has the effect of bringing about an improvement in productivity for the electric pole (P).

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all of the claims and equivalents or equivalent modifications will be said to belong to the scope of the spirit of the present invention. .

100: coupling member
110: coupling hole 120: first through hole
130: first extension protrusion 140: first protrusion tube
150: joint
200: insert member
210: insertion column 220: second through hole
230: second extension protrusion 240: second protrusion tube
300: clamp
310: pressure groove
400: flange
410: hollow
500: fixed tube
510: through hole
C: Concrete
P: Jeonju
W: liner

Claims (5)

A first through-hole 120 in a radial form made in the shape of a disk having a predetermined diameter, a coupling hole 110 is perforated at the center of the diameter, and a steel wire W is inserted through the coupling hole 110 as a center. The plurality of perforated coupling members 100;
It consists of a disk shape having a predetermined diameter and is disposed to face each other with the coupling member 100, and an insertion pillar 210 that is inserted into the coupling hole 110 in a shape-fitting manner is formed in the central portion of the diameter, and the insertion pillar ( Insertion member 200 in which the second through hole 220 of the radial form into which the steel wire (W) is inserted through the center of the 210 is perforated;
Two separable powders fixed by pressing so that the joint 150 of the coupling member 100 and the insertion member 200 is not separated in a state in which the insertion column 210 is inserted into the coupling hole 110 . Clamp 300 made of; and
Doedoe made in the shape of a disk having a predetermined diameter, a hollow portion 410 for coupling to the coupling member 100 and the insertion member 200, respectively, is perforated in the central portion of the diameter, and after the clamp 300 is separated A flange 400 provided so that the coupling member 100 and the insertion member 200 are coupled to each other through a bolt BBBB to allow the pair of electric poles P to be connected to each other;
A first protrusion tube 140 is formed at the end of the coupling member 100, and a second protrusion tube 240 is formed to protrude symmetrically with the first protrusion tube 140 at the end of the insertion member 200,
In the coupling member 100, a first extension protrusion 130 is formed to protrude from a surface facing the insertion member 200, and the insertion member 200 is inserted into the coupling member 100 when the first The second extension protrusion 230 is formed in the same shape as the extension protrusion 130 so that the joint portion 150 can be formed by surface contact with each other, and the first extension protrusion 130 is formed on the outer surface of the clamp 300 . ) and the second extended protrusion 230 are inserted to form a pressing groove 310 to prevent the opening of the joint portion 150,
The flange 400 is another bolt passing through the flange 400 after the bolt BB is separated to be respectively fastened with the nut N provided in the coupling member 100 and the insertion member 200 . (BBBB) is a connecting device of a prefabricated concrete pole, characterized in that it is fastened to the nut (N).
delete delete According to claim 1,
The end of the steel wire (W) is penetrated and fixed to the first through hole 120 or the second through hole 220 into which the steel wire (W) is inserted, respectively, the outer surface of the first through hole (120) Or the second through-hole 220, the fixing pipe 500 that is press-fitted into the inside; Prefabricated concrete pole connecting device, characterized in that it further comprises.
A first through-hole 120 in a radial form made in the shape of a disk having a predetermined diameter, a coupling hole 110 is perforated at the center of the diameter, and a steel wire W is inserted through the coupling hole 110 as a center. The coupling member 100 is formed with a plurality of perforations, and the first protrusion pipe 140 is formed at the end thereof, and the coupling member 100 is formed in a disk shape having a predetermined diameter and is disposed to face each other with the coupling member 100, the diameter of the central portion of the coupling member An insertion column 210 inserted into the ball 110 in a shape-fitting manner is formed to protrude, and a radial second through hole 220 through which the steel wire W is inserted around the insertion column 210 is perforated. The insertion member 200 having a second protrusion tube 240 protruding symmetrically with the first protrusion tube 140 at the end thereof, and the insertion column 210 into the coupling hole 110 are inserted It is made of a disc shape having a predetermined diameter and a clamp 300 made of two separable powders that are fixed by pressure so that the joint portion 150 of the coupling member 100 and the insertion member 200 is not separated in the state. A hollow portion 410 for coupling to the coupling member 100 and the insertion member 200 is formed in the central portion of the diameter, and after the clamp 300 is separated, the coupling member 100 and the insertion member 200 are coupled through the bolt BBBB. The member 100 and the insertion member 200 are coupled to each other to include a flange 400 provided so that a pair of electric poles P can be connected to each other, wherein the coupling member 100 is the insertion member 200 A first extension protrusion 130 is protruded from a surface facing each other, and the insertion member 200 has the same shape as the first extension protrusion 130 when inserted into the coupling member 100, so that they are in contact with each other. A second extension protrusion 230 is formed so that the joint 150 can be formed, and the first extension protrusion 130 and the second extension protrusion 230 are inserted on the outer surface of the clamp 300. In the prefabricated concrete pole formed with a pressing groove 310 to prevent the opening of the joint 150,
1) arranging the coupling member 100 and the insertion member 200 to which the steel wire W is fixedly connected to each other to face each other;
2) The insertion member 200 is inserted and fixed into the coupling member 100, but the first extension protrusion 130 and the second extension protrusion 230 are wrapped together to form a joint 150 in surface contact with each other. fixing the coupling member 100 and the inserting member 200 by fastening the clamp 300;
3) The coupling member 100 and the insertion member 200 coupled to each other by the clamp 300 are seated in a lower mold 11 having a hollow shape, and concrete is poured into the lower mold 11 . to do;
4) The upper mold 13 having a hollow shape is seated and fixed on the upper part of the lower mold 11 into which the concrete is put, to prevent tension of the steel wire (W) and external departure of the concrete, curing the concrete by centrifugal force, and a plurality of electric poles creating (P);
5) separating the plurality of electric poles (P) by removing the clamp 300 after curing the concrete; and
6) Fasten the flanges 400 to face each other using a bolt (BBB) on the outer surface of each of the coupling member 100 and the insertion member 200 provided in the separated electric pole P, but a pair of the The flange 400 is coupled by a bolt (BBBB) so that the plurality of electric poles (P) separated from each other can be connected to each other so that the flanges 400 can be coupled to each other.
The flange 400 is a bolt BBBB passing through the flange 400 after the bolt BB is separated to be respectively fastened with the nut N provided in the coupling member 100 and the insertion member 200 . ) is fastened to the nut (N) and a plurality of the electric poles (P) separated from each other can be connected to each other.

Images