JP3085926B2 - Connection pole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection pole for connecting a plurality of pillars having different diameters used for power poles for power transmission, power distribution and communication, net poles for golf, lighting poles and the like.

[0002]

2. Description of the Related Art A long connecting pole for connecting three columns having different diameters, which is used for a golf net pillar or a lighting pillar,
It is disclosed in Utility Model Registration No. 2556351.

The lower column and the intermediate column each have a straight cylindrical steel pipe lined with concrete up to the lower end except for a connection portion at the upper end thereof, and the upper end of the lined concrete layer is formed in steps. The intermediate pillar has a smaller diameter than the lower pillar.

[0004] The lower end of the intermediate column is inserted into the upper end of the steel pipe of the lower column and placed on the upper step of the lining concrete layer of the lower column, and the intermediate column is arranged concentrically with the lower column. I do. In the gap between the steel pipe upper end of the lower column and the lower end of the intermediate column,
Fill the grout material and connect the intermediate pillar on top of the lower pillar.

[0005] The upper column has a straight cylindrical steel pipe lined with concrete over the entire length, and a lid is fixed to the upper end. The upper column has a smaller diameter than the intermediate column. The lower end of the upper column is inserted into the upper end of the steel pipe of the intermediate column and placed on the step at the upper end of the lining concrete layer of the intermediate column, and the upper column is arranged concentrically with the intermediate column. The gap between the steel pipe upper end of the intermediate column and the lower end of the upper column is filled with a grout material, and the upper column is connected on the intermediate column.

[0006]

However, in the connection pole as described above, the lowermost pillar may not exert a large force on the lower part buried in the ground. Further, the uppermost column may not exert a large force on the upper portion. In such a case, the lining concrete layer in that part has no meaning as a reinforcing material and will increase the weight of the column.

When connecting the upper column to the lower column, there is a mechanism for arranging the lower end of the upper column inserted into the upper end of the steel pipe of the lower column concentrically with the lower column. Since there is no work, it takes a lot of work to align the upper and lower pillars.

[0008] The connecting portion filled with grout material in the gap of the annular cross section between the upper end of the steel pipe of the lower column and the lower end of the upper column is formed between the upper column and the lower column. Since there is no mechanism for increasing the resistance to torsion, the torsional strength is not high. Therefore, the connection pole as described above is used when a large torsion moment acts on the connection between the upper and lower pillars, such as a utility pole in which the arm is attached to the upper pillar in a cantilever manner. hard.

[0009]

Means for Solving the Problems 1) A connection in which a plurality of columns of different diameters each having concrete lining are connected to a steel pipe, and the lower end of the upper column is formed at the upper end of the lower column. Insert into the hole, arrange the upper column concentrically with the lower column,
In a connection pole that fills the gap between the connection hole of the lower pillar and the lower end of the upper pillar with grout material and connects the upper pillar on the lower pillar, the lowest pillar is Fit the bottom plate of the connection hole at the position lowered by the connection length from the upper end of the steel pipe,
The end plate is fitted to the position lowered from the bottom plate of the steel pipe, concrete is lined between the bottom plate and the end plate of the steel tube by centrifugal force forming, and the upper end and lower end of the concrete layer are fixed to the bottom plate and the end plate, respectively. The lower part of the end plate was made a lightweight part without lining concrete.

2) A plurality of columns of different diameters each having concrete lining connected to a steel pipe are connected, and the lower end of the upper column is inserted into a connection hole formed at the upper end of the lower column. Is arranged concentrically with the lower column, the gap between the connection hole of the lower column and the lower end of the upper column is filled with grout material, and the upper column is placed on the lower column. In the connection pole connecting the pillars, the lowermost pillar connects the lower steel pipe and the upper steel pipe concentrically, and the upper steel pipe fits the bottom plate of the connection hole at a position lowered by the connection length from the upper end. The end plate is fitted to the position below the bottom plate, concrete is lined between the bottom plate and the end plate of the upper steel pipe by centrifugal force forming, and the upper and lower ends of the concrete layer are fixed to the bottom plate and the end plate, respectively. The lower part of the upper steel pipe end plate and the lower steel pipe are lightweight parts that do not line with concrete. It was.

[0013] 3) In the connection pole of the above item 1 or 2, the uppermost column has the upper portion of the steel pipe made of a lightweight portion which is not lined with concrete.

4) In the connection pole of the above item 1, 2 or 3, the inner peripheral surface of the connection hole of the lower pillar and the outer peripheral surface of the lower end of the upper pillar inserted into the connection hole. In one or both, a plurality of reinforcing plates are fixed along the axial direction and are arranged at intervals in the circumferential direction, and the gap between the connection hole of the lower column and the lower end of the upper column is A torsion-strength reinforcing mechanism for burying each reinforcing plate in the grout material to be filled was provided.

5) In the connection pole according to any one of the above items 1 to 4, the connection hole of the lower pillar is formed by fixing a plurality of positioning pieces at corners of the inner peripheral surface and the bottom surface in the circumferential direction. Arranged at intervals, the center side of the connection hole of each positioning piece is formed on a slope that descends while approaching the center side, and a centering mechanism is provided at the lower end of all positioning pieces so that the lower ends of the upper pillars are inscribed. Further, the connection holes of the lower pillars are arranged at intervals in the circumferential direction through a plurality of screw shafts in the peripheral wall, and when each screw shaft is rotated, the tip side of each screw shaft protruding into the peripheral wall. The centering mechanism is provided in which the length of the screw shaft increases and the tip of each screw shaft pushes the upper column inserted into the peripheral wall.

6) In the connection pole according to any one of the above items 1 to 5, the lowermost pillar is fixed to a portion including the lower end of the lining concrete layer in a brim shape, and a root portion including the foundation is grounded. Buried inside.

7) In the connection pole according to any one of the above items 1 to 6, an arm for supporting a power transmission line is attached to the uppermost column, and the pole is used as a power transmission pole.

[0016]

1) 2) 3) 6) The lowermost column has a lower part, or the uppermost column has an upper part which does not line concrete with steel pipe. Since a large force does not act on that portion, the weight can be reduced while maintaining the required strength. Concrete can be saved.

4) 7) The connecting portion between the upper and lower pillars is provided with a torsional strength reinforcing mechanism, so that the torsional strength is increased. It can also be used when a large torsional moment acts on the connection.

5) Since a column centering mechanism is provided when the upper and lower columns are connected, much work is not required for centering the upper and lower columns.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a connecting pole is formed by connecting three columns having different diameters, a lowermost column 1, an intermediate column 21 and an uppermost column 41. Used for power poles for power transmission.

The lowermost column 1 is connected to the lower steel pipe 2 and the upper steel pipe 3 of the same diameter by welding the lower steel pipe 2 and the upper steel pipe 3 concentrically, and the welded connection portion is reinforced by a number of ribs 4. .

The lower steel pipe 2 is welded by fitting a circular bottom plate 5 to the lower end. The upper steel pipe 3 is fitted and welded with a circular bottom plate 6 at a position lowered by the connection length from the upper end, and fitted and welded with a circular end plate 7 at a position slightly raised from the lower end. I have. Between the bottom plate 6 and the end plate 7 of the upper steel pipe 3,
Concrete 8 is lined by centrifugal force forming, and the upper end and lower end of the lined concrete layer 8 are bottom plate 6 and end plate 7 respectively.
It is stuck to.

The lower part of the end plate 7 of the upper steel pipe 3 and the lower steel pipe 2
Does not have concrete lining and constitutes a lightweight part.

As shown in FIG. 1, the lowermost column 1 is formed by fixing a reinforced concrete foundation f in a brim shape to a portion including a lower end of a lining concrete layer 8 and a connection portion between upper and lower steel pipes 3 and 2. The base including f is buried underground and established on the ground.

As shown in FIG. 2, the connection portion at the upper end of the lowermost column 1 is composed of the upper portion of the bottom plate 6 of the upper steel pipe 3 and the bottom plate 6 to form a connection hole 9 whose upper surface is open.

As shown in FIGS. 2 and 3, the connection holes 9 are formed by welding a plurality of positioning pieces 10 of the same shape to the corners of the inner peripheral surface and the bottom surface at equal intervals in the circumferential direction. The center side of the connection hole 9 at the top of the positioning piece 10 is formed on a slope descending while approaching the center side, and the lower end of the intermediate column 21 is inscribed at the lower end of all the substantially right-angled triangular positioning pieces 10. .

That is, when the lower end of the intermediate column 21 is dropped into the connection hole 9 of the lowermost column 1, the lower end of the intermediate column 21 abutting on the bottom surface is arranged concentrically with the lowermost column 1. A centering mechanism 10 is provided.

Each positioning piece 10 includes an upper steel pipe 3 and a bottom plate 6.
It also serves as a reinforcing piece to reinforce the fixing part.

As shown in FIGS. 2 and 4, the connection hole 9 radially penetrates a plurality of screw shafts, for example, set screws 11 with hexagonal holes and bolts in the upper part of the bottom plate 6 of the upper steel pipe 3 constituting the peripheral wall. When the set screws 11 are rotated from the outside of the peripheral wall using the hexagonal hole at the base end thereof, the length of each set screw 11 protruding into the peripheral wall increases, The tip of each set screw 11 is configured to push the connection portion at the lower end of the intermediate column 21 inserted into the peripheral wall.

That is, the connection hole 9 of the lowermost column 1 is an intermediate column having a lower end connecting portion inserted into the peripheral wall by an adjusting operation for increasing or decreasing the length of the tip side of each screw shaft 11 protruding into the peripheral wall. A centering mechanism 11 for arranging the body 21 concentrically with the lowermost column 1 is provided.

The centering mechanism 11 is provided in a plurality of stages on the peripheral wall of the connection hole 9 at intervals in the axial direction.

As shown in FIGS. 2 and 5, a plurality of elongated reinforcing plates 12 are welded to the inner peripheral surface of the lowermost column 1 along the axial direction, and are formed at equal intervals in the circumferential direction. A reinforcing mechanism with torsional strength is provided so that each reinforcing plate 12 can be buried in the filled grout material.

As shown in FIG. 1, the lowermost column 1 is formed by welding a plurality of mounting pieces 13 of the same shape to the outer peripheral surface and disposing them at equal intervals in the axial direction. The device can be mounted.

Although not shown, the ladder device has a large number of step bars protruding from both sides of the rail fixed to the mounting piece 13 at equal intervals, and a worker falls on the front side of the rail mounted parallel to the lowermost pillar 1. It is an elevating device that movably connects the preventive device.

As shown in FIG. 1, the intermediate column 21 is fitted with a circular bottom plate 23 at a position lower than the upper end of a straight cylindrical steel pipe 22 by the connection length and welded to the lower end of the steel pipe 22. The ring-shaped end plate 24 is overlapped and welded. Steel pipe 22
The concrete 25 is lined between the bottom plate 23 and the end plate 24 by centrifugal force forming, and the upper and lower ends of the lined concrete layer 25 are fixed to the bottom plate 23 and the end plate 24, respectively.

The outer diameter of the intermediate column 21 is smaller than the diameter of the connection hole 9 of the lowermost column 1 and larger than the inner diameter of the lining concrete layer 8 of the lowermost column 1.

As shown in FIGS. 6 and 7, the connecting portion at the lower end of the intermediate column 21 is formed by welding a plurality of elongated reinforcing plates 26 to the outer peripheral surface along the axial direction and at equal intervals in the circumferential direction. In addition, a reinforcing mechanism having a torsional strength that enables each reinforcing plate 26 to be buried in the filled grout material is provided.

The lower end of the intermediate column 21 is dropped into the connection hole 9 of the lowermost column 1, and as shown in FIGS. 8 and 9, it is arranged concentrically with the lowermost column 1 by the centering mechanism 10. . Intermediate pillar 2 with lower end connecting part inserted into connection hole 9 of lowermost pillar 1
As shown in FIGS. 8 and 10, 1 is arranged concentrically with the lowest pillar 1 by a centering mechanism 11.

As shown in FIG. 11, the reinforcing plates 12 of the connection holes 9 of the lowermost column 1 and the reinforcing plates 26 of the lower end connecting portion of the intermediate column 21 are alternately arranged in the circumferential direction and are equally spaced. In parallel.

The gap between the peripheral surface of the connection hole 9 of the lowermost column 1 and the connection at the lower end of the intermediate column 21 is filled with a grout material g as shown in FIG. The connecting portion at the lower end of the intermediate column 21 is fixed to the connecting hole 9 of the body 1.

8 and 9 and FIG.
As shown in FIG. 0, the tip side of each reinforcing piece and positioning piece 10 and each screw shaft 11 is buried. As shown in FIGS. 8 and 11, each reinforcing plate 12 of the connection hole 9 of the lowermost column 1 and each reinforcing plate 26 of the lower end connecting portion of the intermediate column 21 are buried in the filling grout material g. .

As shown in FIG. 8, the filled grout material g
The upper surface is covered with a rainwater intrusion prevention material r such as a resin mortar.

As shown in FIG. 2, the connecting portion at the upper end of the intermediate column 21 is the upper portion of the bottom plate 23 of the steel pipe 22 and the bottom plate 23 as shown in FIG. A connection hole 27 is formed.

As shown in FIGS. 2 and 3, a plurality of connection holes 27 are formed at the corners of the inner peripheral surface and the bottom surface in the same manner as the reinforcing piece and positioning piece 10 of the connection hole 9 of the lowermost pillar 1. Fixing the reinforcing piece / positioning piece 28 having a substantially right-angled triangular shape, the uppermost column 41
When the lower end is dropped, the uppermost pillar 41 that hits the bottom
Is provided with a centering mechanism 28 whose lower end is arranged concentrically with the intermediate column 21.

As shown in FIGS. 2 and 4, a plurality of connection holes 27 are formed in the upper portion of the bottom plate 23 of the steel pipe 22 constituting the peripheral wall, similarly to the screw shaft 11 of the connection hole 9 of the lowest pillar 1. Through the screw shaft 29 in the radial direction and adjust the length of the tip end side of each screw shaft 29 protruding into the peripheral wall by adjusting the uppermost column body 41 having the lower end connecting portion inserted into the peripheral wall. A centering mechanism 29 arranged concentrically with the column 21 is provided.

As shown in FIGS. 2 and 5, like the reinforcing plate 12 of the connection hole 9 of the lowermost pillar 1, the connection hole 27 is formed as shown in FIGS.
A plurality of elongated reinforcing plates 30 are fixed to the inner peripheral surface along the axial direction, and a reinforcing mechanism having torsional strength is provided so that each reinforcing plate 30 can be buried in the filled grout material.

The intermediate column 21 is the mounting piece 1 of the lowermost column 1.
Similarly to FIG. 3, as shown in FIG. 1, a plurality of mounting pieces 31 having the same shape are fixed to the outer peripheral surface, and a ladder device for elevating can be mounted on the mounting pieces 31.

Mounting piece 3 projecting in the radial direction of intermediate column 21
The length 1 is longer than the mounting piece 13 protruding in the radial direction of the lowermost column 1, because the outer radius of the intermediate column 21 is smaller than the outer radius of the lowermost column 1. Therefore, the ladder device attached to the intermediate pillar 21 is arranged and connected on the same straight line as the ladder device attached to the lowest pillar 1.

As shown in FIG. 1, the uppermost column body 41 is formed by overlapping and welding annular end plates 43 and 44 to the upper and lower ends of a steel pipe 42 having a right cylindrical shape. Concrete 45 is lined between the upper and lower end plates 43 and 44 of the steel pipe 42 by centrifugal force forming, and the upper and lower ends of the lining concrete layer 45 are fixed to the upper and lower end plates 43 and 44, respectively. On the end plate 43 at the upper end, a circular lid plate 46 is fixed by overlapping.

The outer diameter of the uppermost column 41 is smaller than the diameter of the connection hole 27 of the intermediate column 21 and larger than the inner diameter of the lining concrete layer 25 of the intermediate column 21.

As shown in FIGS. 6 and 7, a plurality of elongated reinforcing plates 47 are provided on the outer peripheral surface of the connecting portion at the lower end of the uppermost column 41, similarly to the reinforcing plate 26 at the lower end of the intermediate column 21. There is provided a torsion-strength reinforcing mechanism that is fixed along the axial direction and enables each reinforcing plate 47 to be buried in the filled grout material.

The lower end of the uppermost column 41 is dropped into the connection hole 27 of the intermediate column 21 in the same manner as the lower end of the intermediate column 21, and as shown in FIGS. It is arranged concentrically with the body 21. Connection hole 2 of intermediate pillar 21
The uppermost column body 41 having the lower end connecting portion inserted into the intermediate column body 21 by the centering mechanism 29 as shown in FIGS.
And concentrically arranged.

Each reinforcing plate 30 of the connection hole 27 of the intermediate column 21
Each reinforcing plate 47 at the lower end connecting portion of the uppermost column body 41 and
As shown in FIG. 1, they are alternately arranged in the circumferential direction and arranged at equal intervals.

The gap between the peripheral surface of the connection hole 27 of the intermediate column 21 and the lower end connection of the uppermost column 41 is filled with a grout material g as shown in FIG. Connection hole 2
The lower end connecting portion of the uppermost pillar 41 is fixed to 7.

FIGS. 8, 9 and 1 show the filled grout material g.
As shown at 0, the tip side of each reinforcing piece and positioning piece 28 and each screw shaft 29 is buried. As shown in FIGS. 8 and 11, each reinforcing plate 30 of the connection hole 27 of the intermediate column 21 and each reinforcing plate 47 of the lower end connecting portion of the uppermost column 41 are buried in the filling grout material g. .

As shown in FIG. 8, the filled grout material g
The upper surface is covered with a rainwater intrusion prevention material r such as a resin mortar.

As shown in FIG. 1, a plurality of mounting pieces 48 of the same shape are fixed to the outer peripheral surface of the uppermost pillar 41, as shown in FIG. Ladder device can be attached.

The length of the mounting piece 48 protruding in the radial direction of the uppermost column 41 is such that the outer radius of the uppermost column 41 is
Is smaller than the outer radius of the mounting member 31 protruding in the radial direction of the intermediate column 21. Therefore, the ladder device attached to the uppermost pillar 41 is arranged and connected on the same straight line as the ladder device attached to the intermediate pillar 21.

Although not shown, an arm is attached to the uppermost pillar 41, and the power line is supported by the arm.

[Modifications] 1) In the above connection pole, the uppermost pillar 41 is
When the concrete 45 is lined with the entire length of the steel pipe 42, but a large force does not act on the upper part, the concrete part is not lined with the upper part of the steel pipe 42, and a lightweight part is provided.

2) In the connection pole described above, the number of the intermediate pillars 21 is one, but the number is plural. Alternatively, the intermediate pillar 21 is omitted.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a half of a connection pole according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional front view of an upper end connection portion of a lowermost pillar (intermediate pillar) of the connection pole.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an end view taken along line BB of FIG. 2;

FIG. 5 is an end view taken along line CC of FIG. 2;

FIG. 6 is a vertical sectional front view of a lower end connecting portion of an intermediate pillar (uppermost pillar) of the connection pole.

FIG. 7 is a sectional view taken along line DD of FIG. 6;

FIG. 8 is a vertical sectional front view of a connection portion between a lowermost pillar (intermediate pillar) and an intermediate pillar (uppermost pillar) of the connection pole.

FIG. 9 is a sectional view taken along line EE of FIG. 8;

FIG. 10 is a sectional view taken along line FF of FIG. 8;

FIG. 11 is a sectional view taken along line GG of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lowermost pillar 2 Lower steel pipe 3 Upper steel pipe 6 Bottom plate 7 End plate 8 Lining concrete layer 9 Connection hole 10 Reinforcement piece combined positioning piece, core alignment mechanism 11 Screw axis, core alignment mechanism 12 Reinforcement plate, reinforcement mechanism of torsional strength DESCRIPTION OF SYMBOLS 21 Intermediate pillar body 22 Steel pipe 25 Lining concrete layer 26 Reinforcement plate, torsion strength reinforcement mechanism 27 Connection hole 28 Reinforcement piece / positioning piece, core alignment mechanism 29 Screw axis, core alignment mechanism 30 Reinforcement plate, torsion strength reinforcement mechanism 41 Upper pillar 42 Steel pipe 45 Lining concrete layer 47 Reinforcement plate, reinforcement mechanism of torsional strength g Grout material f Foundation

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04H 12/12

Claims (7)

(57) [Claims] 1. A steel pipe having a plurality of columns of different diameters each of which is concrete-lined and connected to each other.
Insert into the connection hole formed at the upper end of the lower column, place the upper column concentrically with the lower column, and place the lower column between the connection hole of the lower column and the lower end of the upper column. In the connection pole that fills the gap with grout material and connects the upper column to the lower column, the bottom column fits the bottom plate of the connection hole at a position lower than the upper end of the steel pipe by the connection length. The end plate is fitted to the position below the bottom plate of the steel pipe, concrete is lined between the bottom plate and the end plate of the steel tube by centrifugal force forming, and the upper and lower ends of the lining concrete layer are fixed to the bottom plate and the end plate, respectively. A connection pole, characterized in that the lower part of the end plate of the steel pipe is a lightweight part that is not lined with concrete. 2. A steel pipe connected with a plurality of columns of different diameters each of which is lined with concrete, and a lower end of an upper column is
Insert into the connection hole formed at the upper end of the lower column, place the upper column concentrically with the lower column, and place the lower column between the connection hole of the lower column and the lower end of the upper column. In a connection pole that fills the gap with grout material and connects the upper column to the lower column, the lowest column connects the lower steel pipe and the upper steel pipe concentrically, and the upper steel pipe is The bottom plate of the connection hole is fitted at the position lowered by the connection length from the upper end, the end plate is fitted at the position lowered from the bottom plate, and concrete is lined between the bottom plate and the end plate of the upper steel pipe by centrifugal force forming. A connection pole wherein the upper end and the lower end of a lining concrete layer are fixed to a bottom plate and an end plate, respectively, and a lower portion and a lower steel pipe of the upper steel pipe are made of a lightweight portion which does not line concrete. 3. The connection pole according to claim 1, wherein the uppermost column body has an upper portion of the steel pipe made of a lightweight portion not lined with concrete. 4. A plurality of reinforcing plates in one or both of the inner peripheral surface of the connection hole of the lower pillar and the outer peripheral surface of the lower end of the upper pillar inserted into the connection hole. Reinforcement of torsional strength by burying each reinforcing plate in grout material that fills the gap between the connection hole of the lower column and the lower end of the upper column The connection pole according to claim 1, 2 or 3, further comprising a mechanism. 5. The connection hole of the lower pillar is provided with a plurality of positioning pieces fixed at the corners of the inner peripheral surface and the bottom surface and arranged at intervals in the circumferential direction. Is formed on a slope that descends while approaching the center side, and a centering mechanism is provided at the lower ends of all positioning pieces so that the lower ends of the upper pillars are inscribed. When the screw shafts are rotated and arranged at intervals in the circumferential direction through the screw shafts, the length of the tip side of each screw shaft projecting into the peripheral wall increases,
The connection pole according to any one of claims 1 to 4, wherein the tip of each screw shaft is provided with a centering mechanism for pushing an upper column inserted into the peripheral wall. 6. The method according to claim 1, wherein the lowermost pillar body has a base fixed to a portion including a lower end of the lining concrete layer in a brim shape, and a root portion including the base is buried in the ground. Connection pole according to any of the above. 7. The connection pole according to claim 1, wherein an arm for supporting a power transmission line is attached to the uppermost pillar, and is used as a power pole for power transmission.