JP2819387B2 - Electric wire drum for winding a prefabricated electric wire for a complete prefabricated wire line method and a protector for winding the prefabricated electric wire around the electric wire drum - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a complete prefabricated wire-line construction method in which compression-type retaining clamps are crimped to both ends of an electric wire cut to a fixed length corresponding to the length of a single tension section which forms one extension section. The present invention relates to an electric wire drum for winding a prefabricated electric wire, and a protector used for winding the prefabricated electric wire around the electric wire drum.

[0002]

2. Description of the Related Art In recent years, a prefabricated overhead wire construction method has been used for the purpose of labor saving in overhead wire construction. In this prefabricated wire line method, the distance between the wire support points in the section where the wire is to be laid is precisely measured, and the wire length required for the wire section is precisely determined in consideration of the length of the tension insulator and the specified sag. Calculate, mark the required wire length at the time of wire manufacturing, wind it up on a wire drum, cut the wire to the required wire length at the construction site, and crimp compression compression clamps to both ends of the wire. After this wire is drawn through a wire drawing wheel, the overhead wire work is completed by connecting the compression type retaining clamps at both ends to the tension insulator series attached to the tower arm.

[0003] As an overhead wire construction method for realizing further labor saving, a prefabricated electric wire in which compression end clamps are crimped to both ends of an electric wire cut to a fixed length according to the tension section diameter in advance in a factory is wound on an electric wire drum. At the construction site, a completely prefabricated overhead wire construction method in which this prefabricated electric wire is extended while being sent from an electric wire drum is also adopted. In the complete prefabricated wire line method described above, for example, when a single tension section span as shown in FIG. 1 is extended as one extended section, one wire corresponding to the single tension section span is provided on the electric wire drum. What is necessary is just to wind up a prefabricated electric wire. And at the construction site
The extension is performed as shown in the above. In FIGS. 1 and 2, 1 is a tower, 2 is a tower arm, 3 is a tension insulator series, 4 is a suspension insulator series, 5 is a compression type anchoring clamp, 6 is an electric wire, 7 is a wire pulling wire, and 8 is The extension wire 9 is a wire rope on the extension vehicle side. Further, reference numeral 11 denotes a prefabricated electric wire formed by crimping the compression type clamping clamp 5 to both ends of the electric wire 6. The overhead transmission line shown in Fig. 1 is a case where the span of three towers with two suspended towers in the middle is used as the span of the single tension section. When the prefabricated electric wire 11 is sent out from the electric wire drum and is drawn through the wire drawing wheel 7, the compression type end clamps 5 at both ends of the prefabricated electric wire 11 are connected to the tension insulator string 3. The overhead wire work in the single tension section span is completed.

FIG. 3 shows an example of a prefabricated electric wire 11 used in the above-mentioned complete prefabricated wire line construction method.
A compression type retaining clamp 5 is crimped to both ends of an electric wire 6 cut to a fixed length according to a single tension section diameter, and wound around an electric wire drum. The illustrated prefabricated electric wire 11
The special parallel clevis link 12 is connected to the compression type clamping clamp 5 in order to facilitate the tightening work by the so-called Kamares method without using a cam-along. In this case, the prefabricated electric wire 11 including the special parallel clevis link 12 is referred to.

Conventionally, as an electric wire drum for winding the above-mentioned prefabricated electric wire 11, as shown in FIG. 14, an electric wire drum 15 having a structure in which a disk-shaped flange 14 is simply provided on both sides of a cylindrical body 13 is used. Was used.

[0006]

The wire 6 of the prefabricated wire 11 is usually made of a steel core aluminum stranded wire (A
CSR) is used. As the compression type retaining clamp 5 to be crimped to both ends, a wheel-passing type that can smoothly pass through a wire-drawing wheel 7 is used, and its length is, for example, about 1 m for ACSR 610 mm ² . Pretty long. Therefore, winding the compression type clamp 5 together with the electric wire 6 onto the electric wire drum 15 causes wire damage due to bending near the clamp opening (the end of the compression type clamp 5 on the electric wire side) and the electric wire by the compression type clamp 5 itself. This is not possible because of possible damage. Also, assuming that electric wire drums are transported on ordinary roads, there is a height restriction provision (about 3.8 m) in the Road Traffic Act, and electric vehicle drums must be within the range in which the vehicle height meets this restriction. Even if the outer diameter of the body is made as large as possible, it is difficult to prevent the wire from being damaged by bending at the mouth portion of the compression type retaining clamp even if the length is about 1 m.
In addition, there is also a problem that an increase in the outer diameter of the body causes a reduction in the amount of wire winding. For main transmission lines to which the complete prefabricated overhead wire method is applied, the size
SR610mm ² (outer diameter 34.2mm) or ACSR
A large size such as 810 mm ² (outer diameter 38.4 mm) is used, and it is not possible to arrange and wind a compression type clamping clamp having an outer diameter of usually 60 mm to 68 mm together with an electric wire due to the difference in diameter between the two. It is possible, and there is also a problem that the step of the electric wire easily occurs because a step is generated between the electric wire and the compression type clamp. Due to this step drop, when the prefabricated electric wire is sent out from the electric wire drum during the wire drawing,
It is conceivable that a situation may occur in which the wire cannot be sent out due to the electric wire and the compression type clamp being entangled.

The present invention has been made in view of the above circumstances, and when a prefabricated electric wire is wound around an electric wire drum, the electric wire is damaged due to excessive bending at the mouth portion of the compression type electric clamp, and the compression type electric clamp itself is not damaged. An electric wire drum for winding a prefabricated electric wire for a complete prefabricated wire-laying method, which does not cause damage to the electric wire or a situation in which the electric wire cannot be sent out from the electric wire drum, and an electric wire of the prefabricated electric wire An object of the present invention is to provide a protector used for winding around a drum.

[0008]

According to a first aspect of the present invention, there is provided a compression type clamping clamp at both ends of an electric wire cut to a fixed length corresponding to a single tension section diameter forming an extension section. An electric wire drum for winding a prefabricated electric wire for a complete prefabricated wire-line construction method by crimping the prefabricated electric wire, and extending substantially tangentially from the outer periphery of the body of the electric wire drum for mounting a compression type retaining clamp on the winding start side of the prefabricated electric wire. Start the prefabricated wire winding with the clamp holder with the clamp mounting surface.
In a manner in contact with the inner surface of the flange on the side, and installed on the outer periphery of the body of the electric wire drum, and in the circumferential direction of the clamp receiver.
Between the inner surface of the flange and the outer width of the clamp
An electric wire guide having a sloping side surface is provided.

According to a second aspect of the present invention, there is provided a complete prefabricated wire-laying method comprising crimping compression type clamping clamps at both ends of a wire cut to a fixed length corresponding to a single tension section forming an extension section. When the prefabricated electric wire is wound around the electric wire drum, the protector is installed on the outer periphery of the electric wire wound around the electric wire drum. It is characterized by having a clamp mounting surface extending substantially tangentially from the outer periphery of the aligned winding wire for mounting.

According to a third aspect of the present invention, there is provided a complete prefabricated wire-laying method comprising crimping compression-type retaining clamps at both ends of an electric wire cut to a fixed length corresponding to a single tension section forming an extension section. When the prefabricated electric wire is wound around the electric wire drum, the protector is installed on the outer periphery of the electric wire wound around the electric wire drum. It is characterized by having a clamp mounting surface on which to mount the wire and a curved wire mounting surface for smoothly mounting the portion near the clamp opening of the electric wire, which is smoothly connected to the clamp mounting surface.

[0011]

In the electric wire drum according to the first aspect of the present invention, when the compression type retaining clamp at the beginning of winding of the prefabricated electric wire is arranged on the clamp mounting surface of the clamp receiving base, the clamp mounting surface is substantially tangent from the outer periphery of the body of the electric wire drum. Extending in the direction
The wire does not bend sharply at the mouth of the compression clamp at the beginning of winding, but is wound around the body in a smooth curve. Therefore, damage to the electric wire due to bending at the mouth of the compression type clamp at the winding start side is prevented. In addition, since the compression type clamp at the winding start side is placed on the clamp receiving base and the electric wires are wound without being hindered by the compression type clamp, the electric wires do not drop down on the electric wire drum. Therefore, there is no possibility that a situation in which the electric wire cannot be sent out from the electric wire drum will occur. In addition, electric wire guy
Wire allows the wire to be easily aligned and wound.
You.

According to the second aspect of the present invention, the protector can be installed at any position on the outer periphery of the aligned winding wire. When this protector is installed on the outer periphery of the aligned winding wire so that its clamp mounting surface is located below the compression type retention clamp at the end of winding of the prefabricated wire, the clamp mounting surface is substantially tangent from the outer periphery of the aligned winding wire. Since the wire extends in the direction, the wire does not bend sharply at the end of the compression type clamp at the end of winding, and damage to the wire due to bending at the mouth of the compression type clamp is prevented. In addition, since the compression end clamp on the winding end side does not directly contact the outer periphery of the aligned winding electric wire, it is possible to prevent the electric wire from being damaged by the compression end clamp.

According to the third aspect of the present invention, when the protector is installed on the outer periphery of the aligned winding wire such that the clamp mounting surface thereof is located below the compression type retention clamp on the winding end side of the prefabricated electric wire, In the vicinity of the opening of the compression retaining clamp, the wire rests on a curved wire mounting surface smoothly connected to the clamp mounting surface, so that the electric wire does not bend sharply at the proximal end of the compression type retaining clamp at the end of winding. The wire is prevented from being damaged by bending at the mouth of the compression type clamp.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electric wire drum for winding a prefabricated electric wire for a complete prefabricated wire-laying method according to the present invention and a protector used for winding the electric drum around the prefabricated electric wire will be described with reference to FIGS. The electric wire drum of the present invention winds up a prefabricated electric wire for the span of a single tension section that forms one extended line section. The prefabricated electric wire to be wound by the electric wire drum of the embodiment is, for example, as shown in FIG. Such a prefabricated electric wire 11. This prefabricated electric wire 11
In the factory, compression compression clamps 5 are crimped to both ends of electric wires 6 cut to a fixed length according to the single tension section diameter in advance,
A special parallel clevis link 12 is connected to each compression type clamping clamp 5, and is wound around an electric wire drum and transported to a construction site.

FIGS. 4 to 6 and FIG. 8 show an electric wire drum 21 according to an embodiment of the present invention. 4 and FIG.
The illustration of the line guide 26 is omitted. This electric wire drum 2
As shown in FIGS. 4 and 5, the cylindrical body 22 has a disk-shaped flange portion 23 having a shaft hole 23 a formed on both sides of the cylindrical body portion 22, and has a compression shape on the winding start side of the prefabricated electric wire 11. A clamp support 24 having a clamp mounting surface 24a for mounting the retaining clamp 5 and the special parallel clevis link 12 is mounted on the outer periphery of the body 22 in contact with the inner surface of the flange 23 on the winding start side of the prefabricated electric wire 11. . The clamp mounting surface 24
a is a flat surface extending substantially tangentially from the outer periphery of the body of the electric wire drum 21 and is longer than the entire length of the compression type retaining clamp 5 and the special parallel clevis link 24 and is equal to the outer diameter of the compression type retaining clamp 5. With a width of more than. Also,
The clamp cradle 24 has an arcuate bottom surface 24 b having a curvature along the outer peripheral surface of the body 22. The electric wire drum 21 is
8 (a), (b) and (c), the clamp
At the position adjacent to the cradle 24 in the circumferential direction, from the inner surface of the flange 23
It has an inclined side surface 26a that is connected to the outer width of the clamp support 24.
Wire guide 26 is installed. Electric wire guide shown
26 is an arc surface having a diameter equal to the height of the clamp support 24.
It is provided in an angle range of 90 °. The compression type retaining clamp 5 is fixed to the electric wire drum 21 by locking a fixing wire 25 connected to the special parallel clevis link 12 to a flange portion 23.

When the prefabricated electric wire 11 is wound around the electric wire drum 21 at the factory, the fixing wire 25 is engaged with the flange portion 23 as shown in FIG. When the electric wire 6 is wound around the body 22 after the special parallel clevis link 12 is arranged on the clamp mounting surface 24a of the clamp receiving stand 24, the clamp mounting surface 24a is substantially tangent from the outer periphery of the body of the electric wire drum 21. Since the wire 6 extends in the direction, the electric wire 6 does not bend sharply at the mouth portion of the compression type clamp 5 and winds around the body 22 in a smooth curve. Therefore, the wire 6 is not sharply bent at the mouth of the compression type clamp 5, thereby preventing the wire 6 from being damaged by bending. Further, since the electric wire 6 is wound around the body 22 without being hindered by the compression type clamp 5, no step-down of the electric wire 6 on the electric wire drum 21 occurs, and There is no possibility that a situation in which the electric wire 6 cannot be sent out from the drum 21 will occur. Also, adjacent to the clamp receiving base 24,
Connected from the inner surface of the flange 23 to the outer width of the clamp support 24
The electric wire guide 26 with the inclined side surface 26a is installed.
The presence of the wire guide 26 allows the wire 6 to be easily
It will be wound in a line.

FIG. 7 shows another embodiment of the clamp receiving base 24. The clamp receiving table 24 has a clamp mounting surface 24a formed in an arc-shaped concave groove shape. Thereby, the compression type retaining clamp 12 can be mounted more stably.

[0018]

FIGS. 9 to 11 show an embodiment of the protector according to the second aspect of the present invention. The protector 30 is provided with a clamp mounting surface 30a extending substantially tangentially from the outer periphery of the aligned wire for mounting the compression type retaining clamp 5 on the winding end side of the prefabricated electric wire 11 aligned and wound on the electric wire drum 21.
And a special parallel clevis link mounting surface 30b connected to the clamp mounting surface 30a and an arc-shaped bottom surface 30c adapted to the curvature of the outer periphery of the aligned winding wire. Placement surface 30b
Is formed in an arcuate groove so that the compression type clamp 5 and the special parallel clevis link 12 can be stably accommodated.

At the factory, the prefabricated electric wire 11 is
When the protector 30 is mounted on the outer periphery of the aligned winding wire 6 so that the clamp mounting surface 30a is located below the compression type end clamp 5 on the winding end side at the end of winding when winding the wire, the clamp mounting is performed. Since the surface 30a extends almost tangentially from the outer periphery of the aligned winding wire 6, the wire 6 is not sharply bent at the mouth of the compression type clamp 5, and the wire at the mouth of the compression type clamp 5 is not bent. The wire 6 is prevented from being damaged due to bending. In addition, the aligned winding wire 6
Since the compression type clamp 5 does not directly contact the outer periphery of the wire, it is possible to prevent the electric wire 6 from being damaged by the compression type clamp 5. The compression type end clamp 5 on the winding end side locks the fixing wire 31 connected to the special parallel clevis link 12 to the flange portion 23, and
It is good to fix against. As a method of installing the protector 30 under the compression type clamping clamp 5, when winding the prefabricated electric wire 11 around the electric wire drum 21, the protector 30 is attached to the compression type clamping clamp 5 on the winding end side in advance. When the protector 30 is wound on the drum 21, the protector 30 is automatically placed on the outer periphery of the aligned winding wire 6 so as to be positioned below the compression type clamp 5. The protector 30 can be mounted on the compression type retaining clamp 5 by, for example, fastening with a string or the like, or by fitting and mounting the protectors 3 and 5 together using a fitting member, or by tightening bolts.
0 is fixed to the compression type retaining clamp 5 and the like. When winding the prefabricated electric wire 11 on the electric wire drum 21, it is not possible to specify in advance which position the compression type end clamp 5 will be at the end of winding. Since it can be installed at any position in the circumferential direction, it can always respond appropriately.

FIGS. 12 and 13 show an embodiment of the protector according to the third aspect of the present invention. Protector 40 of this embodiment
Is the prefabricated electric wire 11 wound around the electric wire drum 21
A clamp mounting surface 40a for mounting the compression type clamping clamp 5 on the winding end side and a curved wire mounting surface smoothly connected to the clamp mounting surface 40a for mounting a portion near the clamp mouth of the electric wire 6. 40b. In addition, it has an arc-shaped bottom surface 40c that matches the curvature of the outer periphery of the aligned winding wire 6. The cross section of the clamp mounting surface 40a has an arcuate groove shape for accommodating the compression type retaining clamp 5 as shown in FIG. 13A, and the cross section of the electric wire mounting surface 40b is as shown in FIG. Is formed in an arcuate groove shape for accommodating the electric wire 6. Clamp mounting surface 40 of protector 40 in the illustrated example
a extends substantially tangentially to the body 22 of the electric wire drum 21 and has a slight angle between the portion on which the compression type clamp 5 is mounted and the portion on which the special parallel clevis link 12 is mounted. Since both 5 and 40 are formed along the outer periphery of the aligned winding wire 6, the compression type clamp 5 and the special parallel clevis link 12 do not protrude in the outer peripheral direction. However, the clamp mounting surface 40a does not necessarily have to be tangential to the body 22.

When the above-described protector 40 is installed on the outer periphery of the aligned winding wire 6 such that the clamp mounting surface 40a is located below the compression type end clamp 5 on the winding end side, the portion of the wire 6 near the clamp opening is as described above. Clamp mounting surface 40a
Since the wire 6 rests on the curved wire mounting surface 40b which is smoothly connected to the wire, the wire 6 does not undergo sharp bending at the mouth of the compression type clamp 5, but the wire 6 is bent at the mouth of the compression type clamp 5. 6 is prevented.

The material of each of the above members may be determined in consideration of the weight and manufacturability of the electric wire, but the main body of the electric wire drum 21 is made of mild steel, the clamp cradle 24 is made of aluminum casting or mild steel or hard plastic, the protector 30, 40
Is preferably rubber or rubber with a cored bar.

In the embodiment, the case where the special parallel clevis link 12 is connected to the compression type retaining clamp 5 has been described. However, the present invention can be applied to the case where the special parallel clevis link 12 is not provided.

[0025]

According to the first aspect of the present invention, the compression type retention clamp on the winding start side of the prefabricated electric wire can be disposed on the clamp mounting surface of the clamp receiving base extending in the tangential direction of the wire drum body. The wire can be prevented from being damaged due to bending at the mouth of the retaining clamp. In addition, the compression type clamp at the beginning of winding is installed on the clamp holder, and the wires can be aligned and wound without being hindered by the compression type clamp.
No step-down of the electric wire on the electric wire drum occurs, and therefore, there is no possibility that a situation in which the electric wire cannot be sent out from the electric wire drum occurs. Also, this wire guide
The wire can be easily aligned and wound.
You.

According to the second aspect of the present invention, the compression type end clamp on the winding end side of the prefabricated electric wire is provided on the aligned winding electric wire at an arbitrary position in the circumferential direction of the drum body. Since it can be arranged on the clamp mounting surface extending almost tangentially from the outer periphery of the electric wire, it is possible to prevent the electric wire from being damaged due to bending at the mouth portion of the compression type clamp. Also, it is possible to prevent the electric wire from being damaged by the compression type clamp.

According to the third aspect of the present invention, the compression type retaining clamp on the winding end side of the prefabricated electric wire is mounted on a clamp of the protector installed at an arbitrary position in the circumferential direction of the drum body on the aligned wound electric wire. Surface, and the portion near the clamp mouth of the wire rests on the curved wire mounting surface that smoothly connects to the clamp mounting surface, preventing damage to the wire due to bending at the mouth of the compression type clamp. it can. Also, it is possible to prevent the electric wire from being damaged by the compression type clamp.

Further, according to the present invention, the above-described prevention of electric wire damage can be realized without increasing the diameter of the electric wire drum.
The space factor of the electric wire drum can be improved, and at the same time, a practical electric wire drum for winding a prefabricated electric wire for a complete prefabricated wiring method can be realized.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an overhead power transmission line employing a complete prefabricated overhead line construction method.

FIG. 2 is a view for explaining a point of a complete prefabricated wire construction method for carrying out the wire of the embodiment of FIG. 1;

FIG. 3 is a side view showing an example of a prefabricated electric wire wound around an electric wire drum of the present invention.

FIG. 4 shows an embodiment of an electric wire drum according to the present invention ,
An illustration is omitted portion of the line guide, and FIG. (B) is a front view, FIG. (B) is a right side view.

5 is a sectional view showing a state of use of the wire drum in FIG. 4 (same
(The illustration of the electric wire guide is omitted . )

FIG. 6 is a sectional view showing the vicinity of a clamp cradle of the electric wire drum of FIG. 4;

FIG. 7 is a cross-sectional view showing another embodiment of the clamp receiver in the electric wire drum of FIG. 4, in the vicinity of the clamp receiver.

FIG. 8 shows the electric wire drum shown in FIGS.
The meanings indicated without omitting, Fig (b) is a plan view, FIG. (B) is a front view, FIG. (C) is a right side view.

FIG. 9 is a cross-sectional view of an electric wire drum around which a prefabricated electric wire is wound using the protector according to one embodiment of the present invention.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

11 shows details of the protector in FIG. 9; FIG. 11A is a plan view, FIG. 11B is a front view, and FIG. 11C is a right side view.

FIG. 12 is a sectional view of an electric wire drum around which a prefabricated electric wire is wound using the protector according to the third embodiment of the present invention.

FIG. 13A is a sectional view taken along line BB in FIG.
FIG. 13B is a cross-sectional view taken along the line CC in FIG.

FIG. 14 shows a conventional electric wire drum, and FIG.
Is a front view, and (b) is a right side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 5 Compression retention clamp 6 Electric wire 11 Prefabricated electric wire 12 Special parallel clevis link 21 Electric wire drum 22 Body 23 Flange 24 Clamp receiving stand 24a Clamp mounting surface 25 Fixing wire 26 Electric wire guide 30, 40 Protector 30a, 40a Clamp mounting Surface 30b Special parallel clevis link mounting surface 40b Electric wire mounting surface 30c, 40c Arc-shaped bottom surface

Claims (3)

(57) [Claims] An electric wire for winding a prefabricated electric wire for a complete prefabricated wire-laying method, wherein compression-type retention clamps are crimped to both ends of an electric wire cut to a fixed length corresponding to a single tension section diameter forming an extension section. A preloading clamp having a clamp mounting surface for mounting a compression type retaining clamp on the winding start side of the prefabricated electric wire, the clamp receiving surface extending substantially tangentially from the outer periphery of the body of the electric wire drum ;
The cable is installed on the outer periphery of the body of the electric wire drum in such a manner as to be in contact with the inner surface of the flange on the winding start side of the electric wire.
Clamp from the inner surface of the flange at the position adjacent to the
Install a wire guide with sloped sides that connect to the outer width of the
An electric wire drum for winding a prefabricated electric wire for a complete prefabricated overhead wire construction method, which is placed . 2. A prefabricated electric wire for a complete prefabricated wire-laying method, wherein compression-type retaining clamps are crimped to both ends of an electric wire cut to a fixed length corresponding to the length of a single tension section forming an extension section. A protector installed on the outer periphery of the electric wire wound around the electric wire drum when winding the prefabricated electric wire wound around the electric wire drum on the winding end side of the prefabricated electric wire. A protector for winding a prefabricated electric wire for a complete prefabricated wire-laying method when winding an electric wire drum, wherein the protector has a clamp mounting surface extending substantially tangentially from the outer periphery of the wound electric wire. 3. A prefabricated electric wire for a complete prefabricated wire-laying method, wherein compression-type retaining clamps are crimped to both ends of an electric wire cut to a fixed length corresponding to a diameter of a single tension section forming an extension section. A clamp mounted on an outer periphery of an electric wire wound around an electric wire drum when the prefabricated electric wire wound around the electric wire drum is placed on a winding end side of the prefabricated electric wire. A prefabricated electric wire for a complete prefabricated wire-laying method, having a mounting surface and a curved electric wire mounting surface smoothly connected to the clamp mounting surface for mounting a portion near a clamp mouth of the electric wire. Protector for winding electric wire drum.