JPH0694673B2 - Utility pole erection device and its erection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention prevents the sinking of a utility pole in a soft geology where the planted utility pole sinks due to its own weight and the heavy pressure of an overhead wire, and also maintains its upright state. Also relates to a utility pole erection device and its erection method for self-reliance without depending on branch lines or columns.

[Prior Art] As a conventional art of this kind, generally, as shown in FIG. 17 and FIG. 18, both sides of the utility pole 30 are located at a position about 50 cm from the ground surface with respect to the utility pole 30 buried in the ground. In addition, two resistors 31, which are made of concrete or rootwood logs, are fastened together by bolts and nuts 32.

The reason why the resistor 31 is fastened to the utility pole 30 at a distance of about 50 cm from the ground is that it does not hinder the burying of water and gas pipes or the operation of agricultural machinery in farmland. .

[Problems to be Solved by the Invention] The stratum that requires the above-mentioned construction is a soft stratum and has a high groundwater level, and in most cases, springs about 20 to 30 cm underground. For this reason, the resistor around the utility pole 30
It is extremely difficult to excavate 31 areas, and furthermore, the work of fastening and connecting the resistor 31 to the power pole 30 at a position 50 cm from the ground surface must be done while draining because it is underwater. Moreover, since it is muddy water, pump drainage is also impossible, and most of the work environment is inevitably dependent on pumping work with a bucket or the like.

Therefore, the size of the resistor 31 is naturally limited, and the utility pole 30 is a gradual conical body having a gradually decreasing diameter from the lower end portion to the upper end portion. Since the resistor 31 is pushed up in the direction of the upper end, which is the direction of the small diameter, when it is fastened, the resistor 31 relaxes with the passage of time after construction and a sufficient effect of preventing the settlement of the electric pole cannot be expected.

The present invention, from the above viewpoint, in the soft geology that the planted utility pole sinks due to its own weight and the pressure of the overhead wire, in order to maintain the independence of the utility pole and prevent the settlement of the utility pole, the independence of the utility pole and It aims to solve both sides of settlement prevention at the same time.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a utility pole erection device of the present invention has a support pipe made of a hollow pipe penetratingly fixed to one end of a substrate made of a round steel plate and the other end. A rotation shaft shorter than the support pipe is rotatably protruded through the portion so as to face the support pipe, and a train wheel washer is fixed to a lower protruding portion of the rotation shaft and engages with the train wheel washer. A fixing screw is fixed to the lower surface of the substrate at a position, and the rotation shaft has a circumferential surface cut out so as not to interfere with the support pipe when the rotation shaft is rotated about the rotation shaft as a base point. A resistance plate having the above-mentioned shape is rotatably fixed by being superposed on the substrate, and the rotation shaft further includes a support plate positioned above the resistance plate and having one end fixed to the support pipe. The end portion is rotatably inserted and the washer is located on the lower surface of the support plate. To form a resistance plate body, and separately from the resistance plate body, a predetermined number of cutting blades are provided on the outer periphery of the lower end of the hollow pipe having a length and outer diameter capable of withstanding lateral pressure load in the underground embedding part. To form a base pipe, and a predetermined even number of support rod receiving rings are fixed to the outer peripheral surface of the base pipe at a predetermined distance from each other, and the support rods are fixed to the support rod receiving rings. Separately from the thus constructed base pipe and the resistance plate body, engaging rods are provided on the sleeve portions formed by bending the upper ends of two opposing hanging rods of a predetermined length to face each other. A fixed quantity plate body is formed by fixing and integrally fixing the lower end portions to each other by a stationary plate, and the support pipe of the resistance plate body is inserted into the support rod fixed to the outer peripheral surface of the base pipe to receive the support rod. Placed on a ring, and inserting the stationary plate into the base pipe, The engaging rod of the plate member is inserted into the support pipe is to that to bind integrated resistors plate member and the stationary plate body to the underlying pipe.

Further, in order to achieve the above-mentioned object, the present invention is a method of arranging a utility pole, in which a ground auger hole is drilled by a ground auger in a predetermined construction site, and a lateral pressure load in a ground embedded portion is provided in the ground auger hole. A predetermined number of cutting blades are fixed to the outer periphery of the lower end of a hollow pipe having a length and outer diameter that can oppose each other, and a predetermined even number of support rod receivers are opposed to the outer peripheral surface of the hollow pipe at a predetermined distance from each other. A base pipe constituted by fixing the rings and fixing the support rods to these support rod receiving rings is installed by screwing, and then a side hole is excavated in a side portion of the support rod fixed to the outer periphery of the base pipe, and then, , A support pipe made of a hollow pipe is fixed through one end of a substrate made of a round steel plate,
At the other end, a rotation shaft shorter than the support pipe is rotatably protruded so as to face the support pipe, and a train washer is fixed to a lower protruding portion of the rotation shaft and is engaged with the train washer. A fixing screw is fixed to the lower surface of the substrate at a position where the rotating pipe is located, and a circumferential surface is cut out on the rotating shaft so as not to interfere with the supporting pipe when rotating around the rotating shaft as a base point. A resistance plate having a shape is superposed on the substrate 1 and is rotatably fixed to the substrate 1, and the other end of the support plate is fixed to the rotation pipe and has one end fixed to the support pipe. The support plate of the resistance plate body on the outer circumference of the base pipe in a closed state of the resistance plate body which is rotatably inserted and is positioned on the lower surface of the support plate and fixed with a washer. Insert the resistance plate to the outer circumference of the foundation pipe by inserting it through the fixed support rod. At the same time, a rotating tool is connected to the rotating shaft of the resistance plate body to rotate each resistance plate 180 degrees to spread it, and then the upper ends of the hanging rods facing each other are outwardly moved. The engaging rod is fixed to the sleeve portion formed by bending the lower end and the lower end portions thereof are fixedly integrated with each other by the stationary plate, and the stationary plate body is inserted into the base pipe, and the engagement of the stationary plate body is performed. After inserting the dowels into the support pipe of the resistance plate body to integrate them, the excavation residual soil is put into the foundation pipe to fill the hollow portion below the stationary plate of the stationary plate body with the filling soil, and subsequently, The utility pole is passed through the foundation pipe and placed on a stationary plate to adjust and establish the upright state of the utility pole, and the sand is left in the gap between the utility pole and the foundation pipe leaving a predetermined gap from the upper end surface. Inject a filler such as sand and small gravel to stiffen it, then fill the cement in the gap at the upper end and cure it. And cleats layer is to that to be leveled ground portion further backfill side hole.

[Operation] The diameter and length of the foundation pipe according to the present invention are sufficiently expanded, and since an electricity pole is planted in such foundation pipe, the self-sustaining ability is sufficient, and even if it penetrates into undamaged soil and expands. Since the opening resistance plate is integrally connected to the base pipe, the self-supporting ability of the utility pole is further increased.

Further, in the present invention, since the utility pole and the resistance plate body are not directly connected to each other but are connected via the basic pipe integrated with the utility pole, as in the prior art, the upper end with respect to the tapered utility pole is It is extremely safe and reliable, unlike the irrational means of forcibly fastening the resistor that moves in the direction of the small diameter portion with the bolt and nut.

Further, the resistance plate body connected to the base pipe can be increased as needed, so that a great tensile strength can be obtained.

Further, since the construction work is performed by the earth auger, the underwater work is unnecessary and the work load is reduced.

[Example] An example will be described with reference to the drawings. In Figs. 1 to 4, one end of a substrate 1 made of a round steel plate,
Support pipes 9 made of hollow pipes having a predetermined length and outer diameter are fixed by penetrating them so that their outer peripheral surfaces are aligned with each other, and the other end portion of the substrate 1 faces the support pipe 9 and has an upper end portion. An engaging portion 4 that engages with a turning tool to be described later is formed, and a turning shaft 3 having a length of about 1/3 of the supporting pipe 9 is rotatably projected through the turning shaft 3, and the turning shaft 3 is projected downward. The train wheel washer 6 is fixed to the portion, and the train wheel set screw 7 is provided on the lower surface of the substrate 1 at a position where the train wheel washer 6 is engaged.
To fix.

The rotary plate 3 is superposed on the substrate 1 and is inserted into the resistance plate 2 to be fixedly integrated therewith. The resistance plate 2 is a circular plate having the same shape as that of the substrate 1 and is cut out so that the peripheral surface of the support pipe 9 on the side of the rotation shaft 3 can be rotated. That is, the circumferential surface is appropriately cut so as not to interfere with the support pipe 9 when the rotary shaft 3 rotates about the base point.

Reference numeral 5 is a support plate formed by bending a rectangular steel plate of a predetermined length in a U-shape in the longitudinal direction and forming a recess at one end of which is fitted into the outer peripheral surface of the support pipe 9.
Is located slightly above the resistance plate 2 superposed on the substrate 1 and the concave portion at one end is fitted and fixedly integrated with the support pipe 9 while the other end is rotatably inserted into the rotary shaft 3. is there.
A washer 8 is fixed to the rotating shaft 3 at the lower surface of the supporting plate 5.

As described above, the resistance plate A is configured by integrating the substrate 1, the resistance plate 2, the rotary shaft 3, the support plate 5, and the support pipe 9, and the resistance plate A configured in this way In the closed state, the resistance plate 2 is housed within the circumference of the substrate 1 as shown in FIGS.
When turning 180 ° rightward, the resistance plate 2 of the resistance plate body A expands as shown in FIGS. 3 and 4, but at this point, the train wheel washer 6 integrated with the rotating shaft 3 moves to the fifth position. As shown in the figure, the structure is such that it is locked by the train wheel setting screw 7.

FIGS. 6 and 7 show a base pipe 10 composed of a hollow pipe having a length and an outer diameter capable of withstanding lateral pressure load in the underground embedding part, and the base pipe 10 is provided on both sides of the upper end portion. Forming a locking recess 11 facing each other, fixing a cutting blade 12 to the outer periphery of the lower end in four equal parts, and relatively facing the locking recess 11 on both sides of the outer periphery at a predetermined distance from the upper end. The support rod receiving ring 13 is fixed to face the support rod receiving ring 13, and the support rod receiving rings 13 are fixed to the support rod receiving rings 13 on both sides thereof.

Thus, the support rod receiving rings 13 fixed to both outer circumferences of the base pipe 10 are preferably located at a position of about 50 cm from the surface of the ground when the resistance plate A is connected in the ground during construction. The upper end of the support rod 14 is formed to have a length slightly lower than the upper end of the base pipe 10, and the support rod 14 and the base pipe 10 have a slight distance.

FIGS. 8 and 9 show the stationary plate body B, which has a predetermined length in which the engaging rods 18 are fixed to the sleeve portions 17 whose upper ends are bent outwardly. Two hanging rods facing each other
The lower ends of 16 are fixedly integrated with each other by a stationary plate 15 made of a U-shaped plate.

Thus, the horizontal length of the stationary plate 15 is a length that can be inserted into the foundation pipe 10, and the length of the hanging rod 16 corresponds to the embedded length of the utility pole in the foundation pipe 10. Preferably there is.

10 and 11 show the connection relationship between the base pipe 10, the resistance plate body A and the stationary plate body B. As shown in FIG. 10, the support rods 14 fixed to both outer peripheral sides of the base pipe 10 are shown. On the other hand, the support pipe 9 of the resistance plate body A in the closed state as shown in FIG. 1 is inserted and fixed on the support rod receiving ring 13, and as shown in FIG. The plate body B is inserted, and the engaging rod 18 of the stationary plate body B is inserted into the support pipe 9 so that the resistance plate body A and the stationary plate body B are integrally connected to the base pipe 10.

In the above embodiment, the number of the support rods 14 on the outer circumference of the foundation pipe 10 is two, but the number is not limited to this, and two or more support rods 14 may be provided. Of course, the number may be plural.

Next, a method of planting utility poles of the present invention using the utility pole planting apparatus of the above-described embodiment will be described.

First, as shown in FIG. 12, an earth auger hole 19 having a depth corresponding to the length of the foundation pipe 10 is drilled in a predetermined construction site by an earth auger. Next, the foundation pipe 10 is screwed in using the earth auger hole 19 as a guide (13th
(Fig.) In the screwing operation of the basic pipe 10, a special tool for screwing is fitted into the upper end locking recess 11 of the basic pipe 10, and the tip blade of the earth auger is fitted into and screwed in.

Here, the basic pipe 10 to be screwed in has a slightly larger diameter than the earth auger hole 19, but since the lower end cutting blade of the basic pipe 10 advances while cutting the side wall of the earth auger hole 19, Since the frictional resistance of the soil to the outer circumference of the pipe 10 is extremely small and the frictional resistance of the soil to the inner side is completely absent, the screwing of the entire length can be easily performed by screwing while pushing with the earth auger.

Next, as shown in FIG. 14, side holes 20 are drilled by ground augers on both sides of the support rods 14 fixed to both sides of the outer periphery of the foundation pipe 10. Next, in order to mount the resistance plate A in the closed state as shown in FIG. 1 on the outer circumference of the base pipe 10, the support pipe 9 of the resistance plate A is fixed to the outer circumference of the base pipe 10. While being inserted through 14, the rotating tool 21 is fitted to the upper end engaging portion 4 of the rotating shaft 3 of the resistance plate A, and the respective resistance plates 2 are rotated 180 ° to be expanded.

Then, as shown in FIG. 15, the stationary plate body B is inserted into the base pipe 10, and the engaging rod 18 of the stationary plate body B is inserted into the support pipe 9 of the resistance plate body A to be integrated. After that, the excavated soil is put into the stationary plate B from the upper end of the foundation pipe 10.
The hollow portion below the stationary plate 15 is filled with the filling soil 22.
This work may be performed before inserting the stationary plate body B into the base pipe 10.

Then, the utility pole 23 is inserted into the foundation pipe 10 and the stationary plate 15 is inserted.
Place it on the top and adjust and establish the upright state of the utility pole 23,
The gap between the utility pole 23 and the foundation pipe 10 is 10 cm from the upper end surface.
Filling material such as sand and small gravel leaving a gap of 15 cm at the upper end 24
Inject and squeeze and completely fill, then fill and harden the cement in the upper end gap to form the concrete layer 25, and finally backfill the side holes 20 to level the ground surface and finish all construction. is there.

The planting method of the above-mentioned planting apparatus for electric poles is a case where the influence of the groundwater is small even in the soft geology, but when there is the influence of the groundwater, the following method is preferable.

That is, first, complete earth auger hole 19 as shown in FIG.
Since the side wall collapses during excavation, it becomes impossible to excavate a hole.

Therefore, in such a case, the earth auger hole 19 is not excavated, and the foundation pipe 10 is immediately screwed in. However, even in the soft spring formation, there is a frictional resistance of soil from both inside and outside of the foundation pipe 10. Therefore, it is impossible to screw all of the foundation pipe 10.

Therefore, first, when the base pipe 10 is screwed in for about 1 m, the screwing tool engaged with the upper end locking recess 11 of the base pipe 10 is removed to completely open the base pipe 10 and screw the earth auger into the foundation. Eliminate the soil filled in the pipe 10, screw the foundation pipe 10 again here,
The entire length of the foundation pipe 10 is screwed into the soft spring formation while repeating the screwing of the foundation pipe 10 and the work of removing the soil in the foundation pipe 10.

Further, as shown in FIG. 14, even when the resistance plate A is installed on the foundation pipe 10 buried in the earth auger hole 19, the groundwater spouting is submerged up to about 30 cm below the surface of the ground, so that the resistance plate A It is considerably difficult or impossible to fit the turning tool 21 to the upper end engaging portion 4 of the turning shaft 3 of the resistance plate body A in order to widen the resistance plate 2.

Therefore, it is preferable that the rotary tool 21 is fitted before the rotary shaft 3 is submerged and the stationary plate body B is also lowered in an integrated state.

[Effects of the Invention] Since the present invention is as described above, the following effects can be obtained in a soft stratum in which the erected utility pole sinks due to its own weight and the weight of the overhead wire.

(1) Self-supporting effect of utility pole The foundation pipe 10 is composed of a hollow pipe having a length and an outer diameter that can withstand lateral pressure load in the underground embedding part,
Since the utility pole 23 is erected on the foundation pipe 10 thus constructed, it has sufficient self-sustaining ability.

Further, the resistance plate body A having the resistance plate 2 that bites into and spreads in the undamaged soil is integrally connected to the foundation pipe 10 to further increase the self-supporting ability of the electric pole.

(2) Settling prevention effect of utility pole The utility pole 23 and the resistance plate A are not directly connected integrally, but are indirectly connected through the foundation pipe 10 in which the utility pole 23 is integrally connected. As in the prior art shown in FIG. 18 and FIG. 18, an irrational means for forcibly fastening the resistor 31 that tries to move in the direction of the upper small diameter portion to the tapered utility pole 30 with the bolt nut 32. Unlike the above, it is possible to obtain an extremely safe and reliable effect of preventing the sinking of electric poles.

Further, since it is possible to provide two or more resistance plates A integrally connected to the base pipe 10, it is possible to obtain a strong proof strength that is uncomparable to the prior art, and therefore a larger utility pole. Can be obtained.

(3) Simplification of construction means The construction means of the present invention can simultaneously perform the independence of the electric pole and the prevention of subsidence, and all the construction work is performed by the earth auger, and the underwater work is unnecessary, so the burden on the construction worker Is greatly reduced.

[Brief description of drawings]

FIG. 1 is a front view of the resistance plate body. FIG. 2 is a plan view of the resistance plate body. FIG. 3 is a front view showing a state where the resistance plate of the resistance plate body is expanded. FIG. 4 is a plan view showing a state where the resistance plate of the resistance plate body is expanded. FIG. 5 is a bottom view showing a state where the resistance plate of the resistance plate body is expanded. FIG. 6 is a front view of the foundation pipe. FIG. 7 is a plan view of the base pipe. FIG. 8 is a front view of the stationary plate body. FIG. 9 is a plan view of the stationary plate body. FIG. 10 is a front view of a state where the resistance plate body is connected to the base pipe. FIG. 11 is a front view showing a state where the stationary plate body is connected to the base pipe to which the resistance plate body is connected. 12 to 16 and 19 are explanatory views showing a construction state of the present invention. 17 and 18 are explanatory views of the prior art. 1 ... Substrate, 2 ... Resistance plate 3 ... Rotating shaft, 4 ... Engaging part 5 ... Support plate, 6 ... Regulating washer 7 ... Regulating screw, 8 ... Washer 9 ... Support pipe, 10 …… Foundation pipe 11 …… Locking recess, 12 …… Cutting blade 13 …… Support rod ring, 14 …… Support rod 15 …… Stationary plate, 16 …… Hanging rod 17 …… Sleeve, 18… … Engagement rod 19 …… Earth auger hole, 20 …… Side hole 21 …… Rotating tool, 22 …… Filled soil 23 …… Pole, 24 …… Filler 25 …… Concrete layer A …… Resistance plate, B: Stationary plate

Continuation of the front page (56) Reference JP-A-57-209336 (JP, A) JP-A-59-44430 (JP, A) JP-A-3-43591 (JP, A) JP-A-3-233023 (JP , A) Actual development Sho 47-35007 (JP, U)

Claims (2)

[Claims] 1. A support pipe 9 made of a hollow pipe is fixed to one end of a base plate 1 made of a round steel plate, and the other end of the support pipe 9 faces the support pipe 9 and is rotated shorter than the support pipe 9. The shaft 3 is rotatably pierced and protruded, the train wheel washer 6 is fixed to the lower protruding portion of the rotary shaft 3, and the train wheel set screw 7 is provided on the lower surface of the substrate 1 at a position to be engaged with the train wheel washer 6. And a resistance plate 2 having a notched peripheral surface so as not to interfere with the support pipe 9 when the rotary shaft 3 is rotated about the rotary shaft 3 as a base point. It is superposed on the substrate 1 and rotatably fixed thereto, and further, on the rotary shaft 3, the other end of the support plate 5 which is located above the resistance plate 2 and whose one end is fixed to the support pipe 9 is attached. The resistance plate body A is fixed by fixing the washer 8 on the lower surface of the support plate 5 while being inserted rotatably. Separately from the resistance plate A, a predetermined number of cutting blades 12 are fixed to the lower end outer periphery of a hollow pipe having a length and an outer diameter capable of withstanding a lateral pressure load in the underground embedding portion, and the basic pipe 10 And a predetermined even number of support rod receiving rings 13 are fixed to the outer peripheral surface of the base pipe 10 at predetermined intervals from the upper end of the base pipe 10, and the support rods 14 are attached to the support rod receiving rings 13.
A sleeve formed by bending the upper ends of two opposing hanging rods 16 of a predetermined length facing each other, separately from the base pipe 10 and the resistance plate A thus configured. The engaging rod 18 is fixed to the portion 17, and the lower end portions thereof are fixedly integrated with each other by the stationary plate 15 to form a stationary plate body B, and the support rod 14 fixed to the outer peripheral surface of the base pipe 10 is resisted. The support pipe 9 of the plate A is inserted and fixed on the support rod receiving ring 13, and the stationary plate B is inserted into the base pipe 10, and the engaging rod 18 of the stationary plate B is inserted. A utility pole erection device characterized in that the resistance plate A and the stationary plate B are inserted into the support pipe 9 so as to be integrated with the base plate 10. 2. A lower end of a hollow pipe having a length and an outer diameter capable of counteracting a lateral pressure load in the underground embedding portion by drilling an earth auger hole 19 in a predetermined construction site with an earth auger. A predetermined number of cutting blades 12 are fixed to the outer periphery, and a predetermined even number of support rod receiving rings 13 are fixed to the outer peripheral surface of the hollow pipe at a predetermined distance from each other and fixed to the support rod receiving rings 13. Foundation pipe with support bar 14 fixed
10 is installed by screwing, then a side hole 20 is drilled in the side portion of the support rod 14 fixed to the outer periphery of the base pipe 10, and then,
A support pipe 9 made of a hollow pipe is fixed to one end of a substrate 1 made of a round steel plate, and the support pipe 9 is made at the other end.
A rotary shaft 3 shorter than the support pipe 9 to rotatably penetrate therethrough, and a train washer 6 is fixed to a lower protruding portion of the rotary shaft 3 at a portion to be engaged with the train washer 6. Positioned so that the set screw 7 is fixed to the lower surface of the substrate 1 and the rotation shaft 3 has a circumferential surface so as not to interfere with the support pipe 9 when the rotation shaft 3 is rotated about the rotation shaft 3 as a base point. A resistance plate 2 having a notched shape is superposed on the substrate 1 so as to be rotatably fixed, and one end of the rotation shaft 3 is located above the resistance plate 2 and fixed to the support pipe 9. Support plate 5
Of the resistance plate A, which is rotatably inserted through the other end of the support plate and is fixed to the lower surface of the support plate 5 with a washer 8.
The support pipe 9 of the resistance plate body A in the closed state
Is inserted into the support rod 14 fixed to the outer circumference of the base pipe 10 to mount the resistance plate A on the outer circumference of the base pipe A, and the turning tool 21 is attached to the turning shaft 3 of the resistance plate A. Combine and rotate each resistance plate 2 by 180 degrees to expand it, then
A stationary plate in which engaging rods 18 are fixed to sleeves 17 formed by bending the upper ends of the opposing hanging rods 16 outwardly, and the lower ends thereof are fixed and integrated with each other by a stationary plate 15. After the body B is inserted into the foundation pipe 10, the engaging rod 18 of the stationary plate body B is inserted into the support pipe 9 of the resistance plate body A so as to be integrated with each other, and then the excavated soil remaining on the foundation pipe 10 is removed. To fill the hollow portion of the stationary plate body B below the stationary plate 15 with the filling soil 22, and then insert the utility pole 23 into the foundation pipe 10 to place it on the stationary plate 15 and The upright state of 23 is adjusted and established, and a filler 24 such as sand or small gravel is poured into the gap between the utility pole 23 and the foundation pipe 10 leaving a predetermined gap from the upper end surface to stiffen it, and then the upper end. Cement was filled into the gap and hardened to form a concrete layer 25, and the side hole 20 was backfilled to level the ground surface. Planting methods of utility poles, characterized