KR101407855B1 - The street lamp fundamental unit - Google Patents

Abstract

The present invention provides a street light PC round base frame configured to complete grounding work by simply inserting a streetlight PC base base into a trench hole.
In order to accomplish this, the present invention provides a street lamp PC prototype having an anchor bolt for fastening a nut through a hole of a plate welded to a lower end of a street lamp strut and supporting the street lamp strut vertically standing on the ground In the foundation block, the street lamp PC circular foundation block is inserted into a trench hole formed on the ground in a state of being molded from the outside, a conductive concrete ground layer is installed on the lower end of the street lamp PC circular foundation block, At least one of the base reinforcing bars is inserted into the base, the tip of the base and the reinforcing bars are connected to the anchor bolts, and the other end is connected to the conductive concrete ground layer, And an anchor bolt is electrically connected to a ground wire And that the technical aspect in that a.

Description

Street lamp Fish circle base {The street lamp fundamental unit}

The present invention relates to a circular base plate for a street lamp (PC), and more particularly, to a base plate having a base plate and a conductive concrete ground layer having an excellent effect of reducing a grounding resistance, thereby providing durability and corrosion resistance, The present invention relates to a street light PC circular base block configured to complete construction of a grounding work and a street lamp PC circular foundation base by simply inserting the streetlight PC circular foundation base into a hole drilled with an excavator.

A basic construction for supporting a generally known streetlight facility includes a step of performing a terra cotta work on the ground to perforate a trench hole, a step of installing a mold in the perforated hole, an anchor bolt and a wire insertion tube And then the concrete is poured into the mold provided with the anchor bolt and the wire insertion tube. Then, after curing for a predetermined period of time, the curing of the concrete is completed and the mold is removed, Concrete structures that can be used as the basis for building concrete structures.

Anchor bolts are exposed on the upper surface of the concrete structure (street lamp PC circular base block) manufactured as described above. After passing holes formed in the bottom surface of the street lamp strut to the exposed anchor bolts and then fastening the nuts, And fixed to the structure.

However, as mentioned above, in order to construct a streetlight facility in the past, it is necessary to mix concrete, formwork, and concrete after curing, There is a problem that the time required for the installation is unnecessarily delayed. Especially, the construction period is delayed due to the installation of the unnecessary formwork.

On the other hand, a grounding rod is connected to a streetlight facility to protect the power distribution facilities from abnormal currents (lightning, ground, surge, etc.) and to prevent various electric accidents caused by electric leakage.

As shown in Fig. 1, the grounding rod is ground by drilling a pole hole having a predetermined depth for burying the pole on the ground E, and then grounding rod 2 and grounding wire 3 A grounding bar 2 for grounding is placed as a tool such as a hammer or the like and then connected to a power distribution line to connect a grounding line 3 passing through the electric pole 1 and a grounding bar 2 ), And then filling the excavated soil into the pit to complete the filling.

As described above, the grounding bar 3, which electrically connects the ground E and the power distribution line, protects the power distribution facility from an abnormal current and quickly discharges the abnormal current to the ground E in order to prevent personal injury due to various electric accidents. .

However, as described above, the construction of the grounding rod 3 proceeds separately from the step of constructing the pole. Preferably, the pole is placed in a pole hole of the ground, and then the grounding rod 3 is inserted again. So that not only a lot of inconvenience is caused in the construction but also the operation time due to the unnecessary process is delayed.

Particularly, buried ground rods have a problem that ground resistance values required by soil type and composition, geological structure, moisture content and seasonal temperature change are not frequently obtained, , It is often the case that additional grounding rods are buried at regular intervals. If such additional construction methods are continuously applied, the excavation and restoration costs are excessive, the construction period is prolonged, and the prescribed grounding resistance is obtained There is a problem in that it is difficult to secure the excavation space.

Also, the grounding bar is corroded by the rainwater infiltrating into the ground, which requires frequent replacement work.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a conductive concrete ground layer having a ground resistance lowering effect, The present invention provides a street lamp PC round base block configured to complete construction of the grounding work and the street lamp PC round base by simply inserting the street lamp PC round base into the perforated hole.

Another object of the present invention is to provide a method of manufacturing a street light PC circular base block in which an anchor bolt is buried in advance by inserting a street light PC base block manufactured in a trench hole on the ground in advance So that it is not necessary to install unnecessary molds, thereby reducing the construction period.

Another object of the present invention is to provide a streetlight PC round base rod which can prevent corrosion of anchor bolts caused by rainwater by surrounding an outer diameter of an anchor bolt with a rubber coating material.

In order to achieve the above-mentioned objects, the present invention provides an anchor bolt for fastening a nut in a state of passing through a hole of a plate welded to a lower end of a streetlight post, wherein the streetlight post is vertically supported on the ground The streetlight PC circular base block is inserted into a trench formed on the ground in a state of being molded from the outside, a conductive concrete ground layer is installed on the lower end of the streetlight PC round base block, At least one base rebar is inserted into the interior of the street lamp PC base frame, the tip of the base rebar is connected to the anchor bolt and the other end is connected to the conductive concrete ground layer, The anchor bolt is electrically connected to the anchor bolt Characterized in that the ground wire to the bond.

The outer diameter of the anchor bolt is preferably surrounded by a rubber coating layer.

The outer diameter of the streetlight post may be further provided with a reduction material input line for supplying the reduction material to the conductive concrete ground layer.

The present invention is characterized in that a conductive concrete ground layer having an excellent effect of reducing the ground resistance is further provided on the bottom surface of the base so that the street lamp PC round base is inserted into a hole drilled with an excavator drill on the ground surface provided with a street lamp, It is not necessary to install the workpiece according to the grounding work and the workbench according to the grounding work, thereby realizing the effect of reducing the construction period.

In addition, the present invention can realize a volume reduction effect by forming the foundation block into a circular cross-sectional shape instead of a rectangular cross-section, and it is also possible to provide a circular cross- The work can be completed only by inserting the foundation block directly, thereby realizing the operation effect that can shorten the work time and thereby reduce the construction cost.

The present invention also achieves a synergistic effect of preventing the anchor bolt from being corroded by rainwater by surrounding the outer diameter of the anchor bolt with the rubber coating material.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a conventional streetlight grounding structure. Fig.
2 is a three-dimensional view of a street lamp PC round base according to the present invention;
Fig. 3 is a view showing a cross section of the street lamp PC round base shown in Fig. 2; Fig.
Fig. 4 is a view showing a state in which a reducing material input channel is installed on the outer surface of a street lamp PC base plate in accordance with the present invention. Fig.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following detailed description, exemplary embodiments of the present invention will be described in order to accomplish the above-mentioned technical problems. And other embodiments which may be presented by the present invention are replaced by descriptions in the constitution of the present invention.

In the present invention, the foundation concrete block in which the anchor bolts are buried is transferred to the construction site in advance, so that the construction of the foundation concrete block is completed only by inserting the foundation concrete block into the trench hole recessed in the field ground And to realize a street light PC prototype base that can improve the workability by simplifying the work according to the construction of the streetlight facilities.

Particularly, according to the present invention, the grounding work is completed by inserting the streetlight PC circular base block into the trench hole which is dented in the ground while having a durability and corrosion resistance by further providing a conductive concrete ground layer on the foundation base. It is possible to remarkably reduce the working time according to the rainfall, and at the same time to solve the problem of corrosion due to rainwater inflow.

When installing a streetlight base, it is necessary to separately perform grounding work for putting the grounding rod on the ground. By inserting the streetlight PC circular base into the grounding hole as in the present invention, grounding work is completed, The process can be eliminated and the workability can be improved. In addition, the same effect can be obtained even if the construction method is applied to the telephone pole and the telecommunications corporation.

In addition, by using a ground reducing material and using a conductive concrete ground layer having high strength such as cement, it is possible to easily obtain a desired grounding resistance value, thereby reducing the cost of grounding work. Conductive concrete does not change its grounding ability even though the number of years passes and has a good grounding effect.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a cross-sectional view of a streetlight PC circular base in accordance with the present invention, and FIG. 3 is a cross-sectional view of a streetlight PC circular base shown in FIG.

As shown in FIGS. 2 and 3, the lamp post 10 has a cylindrical pipe shape, and a street lamp (not shown) is installed at an upper end thereof. A plate-type plate 12 is welded .

Four holes 14 are formed through the outer edge face of the plate 12 and the nut 16 is fastened to the hole 14 through the anchor bolts 22 described later.

The street lamp PC round base 20 of the present invention is a means for supporting the street lamp post 10 having the above-mentioned configuration in a state of standing vertically on the ground, in which a hole 23 is formed at the center in a cylindrical shape, At least one or more, preferably four, anchor bolts 22 are partially inserted along the periphery of the hole 23, and at least one or more anchor bolts 22, The insertion hole 24 is formed through.

The anchor bolts 22 exposed on the upper surface of the street lamp PC circular base 20 are fastened to the holes 14 formed in the plate 12 of the street lamp post 10 to fasten the nuts 16, (10) to be fixed to the street lamp PC circular base (20). A wire connected to a street lamp installed at the upper end of the street lamp post 10 is connected to a hole 23 formed at the center of the street lamp PC round base 20 and a hole 23 communicating with the hole 23, 20 to the cable embedded in the ground through the wire insertion hole 24, and power is applied to the street lamp.

The outer diameter of the anchor bolt 22 is surrounded by a rubber coating layer 21. The rubber coating layer 21 prevents the metallic anchor bolts 22 from being corroded by the rainwater, so that the metallic coating of the anchor bolts 22 can increase the corrosion resistance while having strong durability. At this time, even if the rubber coating layer 21 is formed on the outer diameter of the anchor bolt 22, the thickness of the coating layer should be considered so as not to interfere with the tightening of the nut 16.

In the present invention, the street lamp PC circular foundation 20 having the above-described construction is not installed in the field, but the street lamp PC circular foundation 20 is transported to the construction site in a state where the streetlight PC circular base 20 is manufactured in a separate work site. The completed streetlight PC round base 20 is inserted into the trench hole 50 formed in the floor of the site, and this method is more effective than the conventional streetlight PC base, And it is possible to ensure quick workability. That is, in the conventional street lighting facility construction method, street light PC circular base rods are sequentially manufactured through a trenching process, a molding process, an anchor bolt and a wire insertion tube installation process, a concrete casting process and a curing process, This construction method requires a lot of steps to fabricate the foundation concrete block in the field, which causes problems such as deterioration in workability and unnecessary work time.

In contrast, according to the present invention, the street light PC circular base rods 20 are formed in a separate work site without forming the street light PC round base rods 20 in a conventional manner, and then, The construction of the street lamp PC round base 20 supporting the street lamp post 10 is completed only by inserting the separately completed street lamp PC round base 20 into the trench hole 50 formed in the street lamp base 10, It is possible to easily complete the construction of the streetlight facility by fastening the light fixture 10 to the anchor bolt 22 of the light fixture PC circular foundation 20 in the state of FIG.

Particularly, in the present invention, when the street lamp PC circular base 20 is formed, the electric wire can be passed through the hole 23 and the wire insertion hole 24 formed in the molding process without inserting the wire insertion pipe separately The simplicity of molding can also be achieved.

The internal cross-sectional structure of the street lamp PC round base 20 includes a hole 23 and a wire insertion hole 24 inside the street lamp PC circular base 20 when the streetlight PC circular base 20 is formed of concrete as shown in Fig. So that the stress of the concrete constituting the street lamp PC circular foundation 20 is reinforced by inserting at least one or more primary reinforcing steel rods 30 vertically along the inner peripheral surface thereof. In addition, at least one metal plate 32 is further inserted into the inside of the street lamp PC circular foundation 20 at a vertical distance so as to be fixed so as not to be shaken during the curing process.

The front end of the base beam steel bar 30 is connected to the anchor bolt 20 provided at the upper end of the street lamp PC circular base 20 and the end thereof is connected to a conductive concrete ground layer 60 The anchor bolt 20 and the conductive concrete ground layer 60 are electrically connected to each other.

After the nut 16 is fastened to the anchor bolt 20, the grounding line 80 is bound to the terminal 70 in a state where the terminal 70 is pinched so that the conductive concrete grounding layer 60 functions as a grounding function. . The base steel steel bar 30 may be replaced with stainless steel having excellent corrosion resistance as required.

The conductive concrete ground layer 60 proposed in the present invention is further provided at the lower end of the street lamp PC circular foundation 20.

The conductive concrete ground layer 60 protects the power distribution facilities from abnormal currents (lightning, ground, surge, etc.) and prevents various electric accidents due to electric leakage.

Conductive concrete is composed mainly of special carbon particles and cement. If it is buried in the ground, it becomes a solidified carbon plate with strength similar to the strength of cement and concrete within 2 to 3 days. It is not corroded in the ground, It is used as a ground electrode. In particular, once hardened, the conductive concrete is a copper-like conductor and a permanent ground electrode.

The conductive concrete ground layer 60 made of the conductive concrete is electrically connected to the anchor bolt 22 by the crossbar reinforcing bar 30 while being installed at the lower end of the street lamp PC circular foundation 20, The grounding function is implemented by the ground line 80 connected to the ground 22.

Particularly, in the present invention, as described above, in a state in which the conductive line concrete ground layer 60 is provided at the lower end of the street lamp PC circular foundation 20 in advance, the street lamp PC circular foundation Since the conductive concrete ground layer 60 is inserted into the trench hole 50 only by inserting the pedestal 20 into the trench hole 50, So that the working time due to the grounding work can be remarkably reduced and the grounding performance can be realized permanently without corrosion.

In the present invention, it is preferable that the conductive concrete ground layer 60 is integrally formed at the lower end of the street lamp PC circular foundation 20 when the street lamp PC circular foundation 20 is formed, So that the foundation block 20 provided with the conductive concrete ground layer 60 can be simultaneously formed.

On the other hand, as shown in Fig. 4, a reduction material introduction line 40 having a predetermined length is provided at the outer periphery of the street lamp post 10 installed at the upper end of the street lamp PC circular foundation 20 in the longitudinal direction of the street lamp post It is installed separately. In the state where the inlet of the reducing material input line 40 is exposed to the outside of the ground and the branch pipes 42 and 44 are connected to each other at the outlet thereof, A grounding resistance value required by the type and composition of the soil, the composition of the soil, the content of water, and the seasonal temperature change can be obtained by putting the reducing agent supplied from the outside into the conductive concrete ground layer 60 .

Hereinafter, the operation of the street lamp PC round base according to the present invention will be described with reference to FIG. 2 to FIG.

First, a digging hole 50 is first drilled on the ground surface of a site where a street light is to be installed using a drill (not shown), and the perforated digging hole is again adjusted to the standard of the street lamp PC round base 20 Excavation is carried out secondarily.

Next, the street lamp PC round base 20 already molded in the outside is inserted into the tearing hole 50, and the street lamp post 10 is fixed to the anchor bolt 22 of the street lamp PC round base 20 by a nut The present invention can be applied to the street lamp PC circular base (50) by forming the conductive concrete ground layer (60) at the lower end of the street lamp PC base foundation in advance, The conductive concrete ground layer 60 can be inserted into the trench hole 50 only by inserting the conductive concrete ground layer 20 into the trench hole 50 so that the ground construction can be completed even if the ground connection is not performed.

After the street lamp PC round base 20 is inserted into the trench hole 50 as described above, the electric wire is passed through the hole 23 and the wire insertion hole 24 of the streetlight PC circular base 20 .

Then, the space between the tearing hole 50 and the street lamp PC circular foundation 20 is filled with soil by a back-up operation, and the construction work is completed.

10: Street lamp 20: Basic concrete block
30: base to rebar 32: metal plate
40: Reduction re-entry line 50:
60: conductive concrete ground layer 70: terminal
80: Ground wire

Claims (3)

A plurality of anchor bolts 22 for fastening the nuts 16 in a state of passing through the holes 14 of the plate 12 welded to the lower ends of the lamp posts 10, And is inserted into a trench hole (50) formed on the ground in a state of being molded from the outside,
The street lamp PC round base 20 has a cylindrical shape and a hole 23 at the center and is inserted in a state in which a part of the plurality of anchor bolts 22 is exposed along the outline of the hole 23 And the rubber coating layer 21 is surrounded on the outer diameter of the anchor bolt 22 to prevent the anchor bolt 22 from being corroded. ) Through which wire insertion holes (24) are connected;
A conductive concrete ground layer 60 is installed on the lower end of the street lamp PC circular foundation 20;
At least one of the foundation block reinforcing bars 30 is inserted into the inside of the street lamp PC round base 20 to reinforce the stress of the concrete and is positioned perpendicular to the foundation block reinforcing bars 30, A plurality of metal plates 32 for fixing the large reinforcing bars 30 are inserted;
The anchor bolts 22 and the conductive concrete ground layer 60 are connected to the ends of the reinforcing bar 30 and the anchor bolts 22. The other ends of the reinforcing bars 30 are connected to the conductive concrete ground layer 60, And an anchor bolt (22) is connected to a ground wire (80);
A light reducing material supply line 40 for supplying a reducing material to the conductive concrete ground layer 60 is installed on the outer diameter of the street lamp post 10 and the entrance of the reduction material input line 40 is exposed outside the ground, (42, 44) at the exit of the streetlight. delete delete

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