JP3068868U - Ground electrode burying device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To bury a ground around a utility pole without digging when it becomes necessary to bury a ground electrode. SOLUTION: A support device 9 for supporting an electrode rod to be buried at a predetermined depth after burying the electrode rod to be buried at a predetermined distance from a utility pole 2, and an electrode rod supported by the support device 9 And an embedding device 8 for embedding in the ground.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a ground electrode burying device that can bury a ground electrode at a specified position without digging a ground surface when a new ground electrode needs to be buried after construction of a pole for power or communication. .

[0002]

[Prior art]

 According to the technical standards for electrical equipment, the ground electrode shall be at a depth of 750 mm or less from the surface of the earth, at a separation distance of at least 1 m from iron poles and other metal objects, and shall be grounded to the same pole at the same pole type A and B according to the technical standards for electrical equipment. Is provided, the distance between the electrodes is specified to be 1 m or more.

Conventionally, means for burying a ground electrode to satisfy the above criterion is a groove c having a depth of 750 mm (L ₄ ) or more over a distance of 1 m (L ₅ ) or more from the side of a utility pole a as shown in FIG. , And the ground electrode d is inserted into this groove to be buried back.

[0004]

[Problems to be solved by the invention]

 However, according to the above-mentioned conventional means, it is necessary to excavate the narrow vertical groove c from the side of the utility pole a, so that much labor is required, and the backfilling is performed after the ground electrode d is put in a predetermined position. However, there is a problem that it takes a lot of work and time to install the electrodes, for example, it is necessary to apply a sufficient compaction pressure after backfilling.

[0005] In particular, it is necessary to obtain prior permission of a road manager if the electrode is buried on a road, and it is necessary to obtain prior permission of the owner of the land if it is a private land. When paved, concrete and asphalt on the surface must be crushed and excavated, and after backfilling, repairs with concrete and asphalt must be performed again. There was a problem.

[0006] The present invention has been made to solve the above-mentioned problems of the conventional technology, and when the necessity of burying a ground electrode arises, the ground around the telephone pole is dug as before. It is intended to provide a ground electrode burying device which can be installed without any problem.

[0007]

[Means for Solving the Problems]

 As a means for solving the above-mentioned problems, the present invention provides a support device for supporting an electrode rod to be embedded by providing an electrode rod to be buried at a predetermined depth and having a position at a predetermined distance from a utility pole. And an embedding device for embedding the supported electrode rod in the ground.

[0008] In the case of a newly installed telephone pole, an oblique hole having an inclination angle such that the position of the electrode rod to be buried is at a position separated from the telephone pole by a specified distance after the electrode rod to be buried is buried at a predetermined depth, It is preferable to adopt a configuration including a supporting device for supporting the electrode in accordance with the inclination and an embedding device for burying the electrode rod supported by the supporting device in the ground.

[0009]

[Embodiment of consideration]

 Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.

FIG. 1 shows a state in which a ground electrode 3 (electrode bar) is additionally embedded in a utility pole 2 having an existing electrode 1. The ground electrode 3 is separated from the existing electrode 1 by a distance L ₁ , and 4 and is buried at a predetermined inclination angle θ with respect to the utility pole 2 so as to have a distance L ₂ from the power pole 2.

The illustrated embodiment shows a case where the configuration according to claim 2 of the present application is provided. As shown in FIG. 2, from the position where the telephone pole 2 is exposed to the ground to the position where it is buried in the ground, a ground electrode 3 the distance L ₁ and for implantation causes inclined to keep the L ₂ at an angle that matches the angle of inclination θ is guide hole 5 penetrating obliquely formed, to this guide hole 5 The ground electrode 3 is inserted and buried in the ground.

As shown in FIG. 3, a guide tube 6 is fixed through the guide hole 5 so as to make it easy to insert the ground electrode 3. Lids 7, 7 are fitted.

The embedding device 8 for embedding the ground electrode 3 includes a device for embedding the ground electrode 3 and a device for embedding the ground electrode 3 by drilling when the geology is inappropriate for the implantation.

As for the supporting device 9 for supporting the embedding device 8 by the above-mentioned driving, there are a supporting device 9 attached to the utility pole 2 as shown in FIG. 4, and a supporting device 9 installed on the ground shown in FIG.

The support device 9 configured to be attached to the utility pole 2 includes band-shaped fixtures 10 and 11 that are fixed to the utility pole 2 at an interval vertically, and an arm that extends horizontally from the upper fixture 10. 12 and a support portion 13 which connects the distal end of the arm 12 and the lower fixture 11 and has an inclination angle corresponding to the inclination angle θ. The support portion 13 is driven by an air hammer or a hydraulic hammer. An implantable device 8 is slidably supported. In addition, since the embedding device itself uses a well-known device, its details are omitted.

When the support device 9 is installed on the ground as shown in FIG. 5, a fixing device 14 fixed to the base of the utility pole 2 and adjust bolts 15, 15 extending horizontally from the fixing device 14 are provided. A horizontal arm 16 to be installed through the arm, a vertical arm 17 which rises at a right angle from the end of the horizontal arm 16, and the upper end of the fixture 14 and the vertical arm 17 are connected and fixed with an inclination angle equal to the inclination angle θ. The embedding device 8 is slidably supported by the supporting portion 18.

In the case of the driving type, a reduction effect promoting material embedding tool 32 is used as the reduction effect promoting material 19. As shown in FIG. 6 (A), the reduction effect promoting material 19 is made of a conductive pipe material, and has a number of small holes 20, 20... A pointed head 21 is attached to reduce the driving resistance.

As shown in FIG. 6B, the ground electrode 3 inserted into the reduction effect promoting material 19 is connected to a ground wire 22 by a press-connecting connector 23, and the ground wire 22 comes out on the ground and is placed on the telephone pole 2. It is long enough to connect to other devices.

Therefore, when the reduction effect promoting material 19 is driven by the embedding device 8 supported by the support portion 13 (or 18) of the support device 9, the guide hole 5 of the utility pole 2 and the inclination angle θ of the support portion 13 are determined. As shown in FIG. 7, the reducing effect promoting material 19 is buried in the ground at a predetermined angle, and then the embedding device 8, the supporting device 9, and the reducing effect promoting material embedding tool 32 are removed, as shown in FIG. Cavity 34 remains.

Next, as shown in FIG. 9, the ground resistance reducing agent injection pipe 25 is inserted into the cavity 34, and as shown in FIG. 10, the ground electrode 3 is inserted to prepare the ground resistance reducing agent 24 for injection. After the grounding resistance reducing agent 24 is injected through the grounding resistance reducing agent injection pipe 25 and then the grounding resistance reducing agent injection pipe 25 is removed, as shown in FIG. The ground electrode 3 and the ground resistance reducing agent 24 are embedded.

FIG. 12 shows a case in which when the power pole 2 is made of metal, the distance L ₃ between the upper end of the ground electrode 3 and the power pole 2 is maintained at a specified value. It will be buried deeper than at the time of burial mentioned above.

FIG. 14 shows another example of the driving tool 26 used in the driving-type embedding device 8. As shown in FIG. As shown in FIG. 14 (B), a ring member 28 which can be fitted to the small diameter portion 27 is fixed to the tip of the electrode 3, and the small diameter portion at the tip of the tool 26 is fixed to this ring member 28 as shown in FIG. 14 (C). The ground electrode 3 is embedded together by inserting the tool 27 and driving the tool 26. When the tool 26 is pulled out, the tool 26 is pulled out of the ring member 28 of the ground electrode 3 when it reaches a predetermined depth, and the ground electrode 3 is pulled up. The electrode 3 is left underground.

FIG. 15 shows another example of the driving tool. A groove 30 is formed in an example of the round bar-shaped tool 29 over a range slightly longer than the length of the ground electrode 3 from the front end thereof. Then, the ground electrode 3 is aligned with the upper end thereof, and the upper end of the ground electrode 3 is engaged with the step 31 at the upper end of the concave groove 30. The ground electrode 3 is embedded together by driving the tool 29, and after the insertion, the tool 29 is pulled out. In this case, the ground electrode 3 is left in the ground.

FIG. 16 shows a state in which the grounding electrode 3 is buried in the ground using the tool 26 or 29 described above, and then the grounding resistance reducing agent 24 is injected into the hollow portion of the trace of the tool. I have.

Instead of the driving of the material 19 for promoting the reduction effect of the ground electrode 3 and the tools 26 and 29, a press-fitting type embedding device using a fluid cylinder can be used. It can be buried in the same way.

In the above description, a guide hole 5 having an inclination angle equal to the embedding angle of the ground electrode 3 is provided in the utility pole 2, and the ground electrode 3 is embedded using the guide hole 5 as a guide. However, the support portions 13 and 18 of the support device 9 may be embedded as guides, and the guide holes 5 may not necessarily be provided. Alternatively, a guide member may be provided outside the utility pole 2.

[0027]

[Effect of the invention]

 As described above, according to the present invention, even when a new ground electrode needs to be installed on a pole after a pole has been built, the ground electrode can be securely placed at a predetermined position without excavating the ground around the pole. Can be buried. In addition, even if the surrounding area is a road or private land, the excavation amount is less than 1% compared to the conventional technology, making it possible to easily and quickly bury the ground electrode, such as reducing pavement restoration. effective.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a state in which a ground electrode is embedded.

FIG. 2 is a front view showing a guide hole provided in a utility pole.

FIG. 3 is an enlarged sectional view showing another example of the guide hole of FIG. 2;

FIG. 4 is a side view showing an example of a support device.

FIG. 5 is a side view showing another example.

FIG. 6A is a partially cutaway side view of a reduction effect promoting material,
(B) is a partially cutaway front view of the ground electrode.

FIG. 7 is a side view showing a state in which the reduction effect promoting material of FIG. 6A is embedded.

FIG. 8 is a cross-sectional view showing a cavity that can be left as a trace after removing the driving tool of FIG. 7;

FIG. 9 is a sectional view showing a case where an injection pipe for injecting a ground resistance reducing agent is used.

FIG. 10 is a sectional view showing a state in which a ground electrode is inserted in FIG. 9 and a ground resistance reducing agent can be injected;

FIG. 11 is a cross-sectional view showing a state where a reduction effect promoting material, a ground electrode, and a ground resistance reducing agent are buried in predetermined positions.

FIG. 12 is an embedded view of a ground electrode when a power pole is made of metal.

FIG. 13 is a side view of a tool for burying a reduction effect promoting material.

FIGS. 14A and 14B show an example of a driving tool, wherein FIG. 14A is a front end, FIG. 14B is a ground electrode, and FIG.

15A and 15B show another example of the driving tool, wherein FIG. 15A is a partially cutaway side view of the tool, and FIG. 15B is a side view showing a state at the time of driving the ground electrode.

FIG. 16 is a side view showing a state in which a ground resistance reducing agent is injected around a ground electrode driven by using the driving tool of FIG. 14;

17A and 17B are a side view and a plan view showing an example in which a ground electrode is buried in an existing electric pole using the present support device and a reduction effect promoting material.

FIG. 18 is a cross-sectional view of a conventional technique when the distance from an iron pole or other metal body or an existing contact electrode is 1 m or more.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Existing electrode 2 Power pole 3 Grounding electrode (electrode rod) 4 Ground surface 5 Guide hole 6 Guide tube 7 Lid 8 Embedding device 9 Supporting device 19 Reduction effect promoting material 22 Grounding wire 25 Grounding resistance low agent injection pipe 26, 29 Driving tool

Claims (2)

[Utility model registration claims] 1. A supporting device for supporting an electrode rod to be buried at a predetermined depth after burying the electrode rod to be buried at a predetermined distance from a telephone pole, and mounting the electrode rod supported by the supporting device on a ground. And a burying device buried in the ground electrode. 2. An oblique hole having an inclination angle such that the position of the electrode rod to be buried is at a predetermined distance from the telephone pole after the electrode rod to be buried is buried at a predetermined depth is provided in the surface exposed portion of the telephone pole. A ground electrode embedding device, comprising: a support device that supports the electrode rod according to (1), and an embedding device that embeds an electrode rod supported by the support device in the ground.