TWI402415B - Method for constructing high strength earth wire under-bracing using extendable hydraulic excavating screw - Google Patents

Description

Method for constructing high-strength grounding wire support using extensible hydraulic excavation screw Field of invention

The present invention relates to a method of constructing a circular grounding wire support which is used in the case of using a digging screw mounted on an auger crane for mechanized pole work. For supporting and fixing utility poles, and more particularly, a method for constructing a high-strength circular grounding wire support using an extendable hydraulic excavation screw, thereby increasing the circular grounding wire under support The surface area buried in the ground is used to improve the pull-out resistance of the support under the circular grounding wire, and the excavating screw automatically extended by the hydraulic pressure is used to sequentially excavate the area for burying the support under the circular grounding wire. The segment of the segment and the grounding bar can be used as part of a large-capacity power distribution device by effectively obtaining a force for supporting a high-powered utility pole and supporting only under a single circular grounding wire, and can be extended by the same. The hydraulic excavation screw can quickly and effectively construct the circular grounding wire under the support.

Background of the invention

Usually, when constructing electric power transmission and distribution lines and communication lines, if installing poles and connecting wires and communication cables, install grounding wires to strengthen the unbalanced tension between the wires and the communication cables to prevent wires. The lever is tilted or fallen down. In addition, when installing the grounding wire, firstly, the excavation work of the underground grounding support is carried out by manpower or machine. After that, bury the ground wire support at the excavation site and connect the ground wire to the pole by wire rods.

The conventional grounding wire support and the method for constructing the ground wire lower support are disclosed in Korean Patent Nos. 710649, 738279, 740013, and 761778, the applicants of which are the same as the present invention.

The grounding wire support for the recent grounding support construction method consists of two types, the first one is a rectangular ground wire with a length of 0.7 m and 1.2 m, and the other is a diameter of 43 m and 62 m and the length and The rectangular ground wire below supports the same circular wire under the support.

The difference in size and shape of the grounding wire support is based on the design load of the equipment to be fitted with the utility pole to complete the equipment with sufficient tension according to the design load requirements. With the development of the industrial field and the number of facilities requiring electricity, the power supply system has become a large capacity.

The circular grounding wire lower support introduced by the applicant of the present invention is a novel technique of replacing the lower rectangular grounding wire support with a circular grounding wire lower support.

In more detail, the distribution voltage of the Korean power distribution system is 22.9 kV, but studies have been made to increase the distribution voltage to enhance the large-capacity power distribution.

Therefore, the family will construct the distribution voltage from 110V to 220V, and then change the Korean distribution voltage from 6.6kV to 22.9kV.

Since the distribution voltage is changed, all the materials required to construct the power equipment should also be changed, and in this case, the utility pole for supporting the electric equipment, the grounding wire for supporting the utility pole, and the fixed grounding The underlying ground wire support is an extremely important material.

In view of the route of the distribution line, the wires and related materials disposed on the utility pole are added under the consideration of the design load, so that their weight is within the range that the grounding wire can withstand the tension of the distribution line to avoid damaging the utility pole. Therefore, in solving the above problems, the power equipment related materials disposed on a distribution line (that is, the route of the distribution line) are integrated to a higher degree.

For example, suppose that there is an area (where the utility pole is to be erected on both sides of the road and the distribution line is placed on the utility pole). At this time, if it is possible to construct the high-strength grounding line, the heavy-duty equipment to be placed on both sides of the road can be disposed. Integrated on one side of the road. As power demand grows, installing large-capacity power lines to improve power supply, as well as installing electrical equipment, can ruin the appearance of the road and can damage the surrounding environment by occupying land. As the power equipment becomes large in capacity and the load is also increasing, there is a real need to develop a grounding line support with high strength.

In addition, the current power distribution construction is equipped with two or more power lines and facilities shared by the communication lines, so that when a ground line cannot withstand the tension applied by the power lines and communication lines, additional wires are added. Often occurs. However, if the construction of the high-strength grounding wire is carried out, the grounding wire construction only applies a high tension once, so that only a single grounding wire can be used to support the weight of the material obtained according to the increase of the power distribution equipment and the communication line sharing facility. With the tension of the line. Therefore, there is absolutely a need to develop high-strength ground wire support.

Summary of invention

Accordingly, the present invention has been made based on the above problems of the prior art, and an object of the present invention is to provide a method of constructing a high-strength circular grounding wire support using an extendable hydraulic excavation screw, wherein a diameter of at least 72 cm is provided. Or a lower circular grounding wire support, and using the extendable hydraulic excavating screw mounted on the drilling and hoisting machine to form an excavation section for burying the circular grounding wire lower support, the opening The excavation section comprises a grounding wire supporting embedding section and a grounding bar intervention section formed by using a plurality of auxiliary digging parts by hydraulic pressure expansion and contraction, thereby greatly increasing the surface area facing the ground and the soil A circular grounding wire support for sizing is provided to improve the pull-out resistance, and the excavation process is mechanically performed by an excavation screw having a plurality of extendable hydraulic auxiliary blade components without any manual operation, thereby replacing the use Extending the existing methods of constructing a circular grounding wire support for a machine for manual operation to provide rapid construction time and high quality construction.

In order to achieve the above object, according to the present invention, there is provided a method of constructing a circular ground wire lower support using an extendable hydraulic excavation screw, wherein the circular ground wire supports at least 72 cm or more in diameter and is fixed to the same a vertically extending grounding bar at the center, and the hydraulic excavating screw has a plurality of auxiliary cutter members horizontally expandable and contractible by hydraulic pressure and a screw member mounted along a peripheral surface thereof, the method comprising The following steps: when the auxiliary cutter parts are in a contracted state, only the screw screw component of the hydraulic excavation screw is used to perform an excavation procedure of a grounding rod pulling section; performing excavation of supporting the buried section a program, wherein the circular ground wire lower support is buried in a ground adjacent to the grounding bar pull-out section, the lower support buried section excavation program including the first when the auxiliary cutting tool component is in a contracted state Excavation procedure, and expanding the auxiliary cutter members by the hydraulic pressure so that the diameter of the lower support buried section is greater than the support of the circular ground line a second excavation procedure; inserting the circular ground wire lower support into the lower support buried section; and performing the circle on the ground through the grounding bar pull-out section formed beside one of the lower support buried sections The grounding bar is supported by the grounding wire.

Simple illustration

The above and other objects, features and advantages of the present invention will become apparent from the <RTIgt;

1 is a perspective view showing a hydraulic excavation screw used in the present invention; FIG. 2 is a perspective view showing a circular grounding support for the present invention; and FIG. 3 is a sectional view according to the present invention. The method for constructing the support of the circular grounding wire shows the excavation procedure of the grounding bar pull-out section; the cross-sectional view of FIG. 4 is the method for constructing the grounding wire lower support according to the present invention. a first excavation procedure of the buried section; a cross-sectional view of the fifth diagram is a second extended excavation procedure for supporting the buried section according to the method for constructing the grounding support according to the present invention; and FIG. The cross-sectional view illustrates the state in which the grounding wire is inserted into the excavation section in accordance with the present invention.

Detailed description of the preferred embodiment

The terms used in the following and the claims are not to be construed as limiting, but the invention is to be construed as being

The following is a detailed description of the method for constructing a circular ground wire lower support using the drawings.

The perspective view of Fig. 1 illustrates a hydraulic excavation screw for use in the present invention, and the perspective view of Fig. 2 illustrates a circular ground line support for the present invention.

As shown, the hydraulic excavation screw 20 used in the present invention includes auxiliary digging members 21, 21' which are horizontally expandable and contractible by hydraulic pressure applied by the drilling and hoisting machine, and the excavating screw 20 is installed. The screw crane 22 is attached to the hoisting machine and along the outer peripheral surface.

Further, the circular ground wire lower support 10 for use in the present invention has a diameter of at least 72 cm or more and includes a vertically extending grounding bar 11 that is fixed to the center thereof.

In a state where the circular grounding wire is supported by the lower 10 and the hydraulic excavating screw 20, the hydraulic excavating screw 20 is attached to the drilling and hoisting machine, and then the site where the electric pole is installed is excavated.

At this time, in a case where the auxiliary cutter members 21, 21' are not expanded, the site is excavated by the hydraulic excavation screw 20, whereby the intervention section having the grounding bar 11 is removed.

In this state, the hydraulic excavating screw 20 is moved to a position adjacent to the grounding bar pull-out section 30 formed by the excavation process, and then, in a state where the auxiliary digging members 21, 21' are not expanded, The first grounding wire supports the excavation procedure.

When the first grounding line supports the excavation procedure, the excavation pressure applied to the hydraulic excavation screw 20 is strong according to the site and geological state and the presence of the gravel layer, and therefore, the auxiliary digging is performed. In the state where the cutter members 21, 21' are not horizontally expanded by the hydraulic excavation screw 20, the first ground line lower support excavation procedure does not increase the load of the hydraulic excavation screw 20 and the drill crane.

After the completion of the support excavation procedure under the first grounding line, hydraulic pressure is applied to the auxiliary digging members 21, 21' of the hydraulic excavation screw 20, so that the auxiliary digging members 21, 21' are horizontally expanded by the hydraulic excavating screw 20. After the auxiliary digging members 21, 21' are expanded, the second grounding line support excavation procedure is performed by the hydraulic excavation screw 20 to extend the excavation section of the first excavation program. In this case, the load applied to the hydraulic excavation screw 20 and the drill hoist is relatively reduced, whereby the excavation procedure of the lower support burying section 40 can be completed gently and quickly.

Next, an insertion procedure for inserting the circular ground wire lower support 10 into the lower support buried section 40 is performed, and a circular ground is pulled out to the ground through the grounding bar pull-out section 30 formed on the side of the lower support buried section 40. The pull-out procedure of the grounding bar 11 of the offline support 10.

As described above, according to the present invention, the lengthening of the grounding wire is used to increase the surface area against the excavated buried and buried sand, and thus the force of supporting the utility pole by the grounding bar fixed to the lower support of the grounding wire becomes Very strong, even if the weight of various materials is increased in order to increase the distribution voltage, this method is still effective. Since additional materials related to the number of electrical equipment can be additionally installed on existing lines, an integrated large-capacity distribution line can be designed, thereby solving the problem of destroying the road appearance due to the installation of electric equipment and substantially reducing the area occupied by the land. In addition, since the construction of the high-strength grounding wire is achieved by a grounding wire support, no additional grounding wire construction is required, and the auxiliary cutting tool component that is automatically expanded by the hydraulic pressure exerted by the drilling and hoisting machine can be quickly and effectively Excavating the lower support section and the grounding rod intervention section, which has excellent workability and economical efficiency, and replaces the existing method of constructing a circular ground line support using an extended manual operation machine.

Although the present invention has been described in terms of specific exemplary embodiments, the invention should not be construed as being limited to the specific embodiments. It will be appreciated by those skilled in the art that the specific embodiments may be modified or modified without departing from the scope and spirit of the invention.

10. . . Round ground wire support

11. . . Vertically extending grounding rod

20. . . Hydraulic excavation screw

21, 21’. . . Auxiliary cutter component

twenty two. . . Screw screw part

30. . . Grounding rod pull out section

40. . . Lower support buried section

1 is a perspective view showing a hydraulic excavation screw used in the present invention;

2 is a perspective view showing a circular ground wire support for use in the present invention;

Figure 3 is a cross-sectional view showing the method of constructing a circular grounding wire under the support according to the present invention;

4 is a cross-sectional view showing a first excavation procedure for supporting a buried section according to the method for constructing a grounding line support according to the present invention;

Figure 5 is a cross-sectional view showing a second extended excavation procedure for supporting a buried section according to the method for constructing a grounding wire support according to the present invention;

Fig. 6 is a cross-sectional view showing the state in which the grounding wire is inserted into the excavation section in accordance with the present invention.

20. . . Hydraulic excavation screw

21, 21’. . . Auxiliary cutter component

twenty two. . . Screw screw part

Claims (1)

A method of constructing a circular ground wire lower support using an extendable hydraulic excavation screw, wherein the circular ground wire lower support has a diameter of at least 72 cm or more and a vertically extending grounding bar attached to the center thereof, and The hydraulic excavation screw has a plurality of auxiliary cutter members horizontally expandable and contractible by hydraulic pressure and an auger screw member mounted along the outer peripheral surface thereof, the method comprising the steps of: at the auxiliary cutter members In the contracted state, only the screw screw component of the hydraulic excavation screw is used to perform an excavation procedure of a grounding rod pull-out section; and an excavation procedure for supporting the buried section is performed, wherein the circular grounding wire lower support system Buried in a foundation adjacent to the grounding rod pullout section, the lower support buried section excavation program includes a first excavation procedure when the auxiliary cutter parts are in a contracted state, and by the hydraulic pressure a second excavation procedure for expanding the auxiliary digging member such that the diameter of the lower supporting embedding section is greater than the diameter of the lower grounding support; the circular grounding wire is lowered Inserted into the lower support struts embedded section; and by the ground line formed on the lower side of the support section embedded in the ground line pull rod supporting section to the ground line of the circular surface of the stick to the removal operation.