JP2006288167A - Auxiliary equipment for stringing cable, cable holding device, and method for stringing cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique with which a cable can be easily strung overhead using a movable hanging sheave. <P>SOLUTION: The hanging sheave 100 is used to string a power cable 10 along a support wire 20 strung between poles, and is capable of holding a power cable 10. The hanging sheave includes a roller 111 that is provided along its periphery with a recessed surface toward the center of rotation, and can be rolled along a support wire 20 with the support wire 20 housed in the housing 111a formed by the recessed surface; and an opening/closing member 114 that is placed under the roller 111 when the roller 111 is placed on the support wire 20 and opens and closes the housing 111a. The opening/closing member 114 is so constituted that, when the opening/closing member 114 is open, a support wire 20 can be housed in or taken out of the housing 111a; when the opening/closing member 114 is closed, a support wire 20 is not detached from the housing 111a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for arranging a cable in the air.

2. Description of the Related Art As a method for laying a cable in the air, a method for laying a wire using a movable suspension wheel (cable overhead wire auxiliary device) is known. The movable suspension wheel has an attachment member for attaching a cable to be wired and a roller that can roll on a support wire.
When a cable is installed between utility poles using a movable hanging wheel, first, a support wire is installed between the utility poles. Next, the roller of the suspension wheel is placed on the support wire, and the tip of the cable is attached to the attachment member of the suspension wheel. Then, the roller rolls on the support wire. When the roller is rolled on the support wire and the cable is fed out, the portion of the fed-out cable is attached to an attachment member of another hoisting wheel placed on the support wire. When the cable is installed between the utility poles, the cable is fixed to the utility pole, and the suspension wheel and the support wire are removed (see Patent Document 1).
JP 2001-327016 A

By the way, when installing (laying out) 77 kV-class power cables (generally constituted by a plurality of pre-twisted wires (for example, three wires)), they are usually buried underground. A method of disposing in a disposing tube is used. However, this method requires an operation of burying the installation pipe underground, and the cost for installing the cable is high and the operation period is long. Thus, there is a case where such a method of laying the power cable in the air is used.
In general, when a power cable is installed in the air, a fixed suspension wheel is used. According to this, a plurality of fixed type suspension wheels having guide rollers are arranged on the support wires previously wired between the utility poles. Then, the power cable is placed on the guide roller, the guide roller is rolled in the direction of the overhead wire, and the power cable is wired between the power poles (also referred to as a wire extension). Thereafter, the overhead power cable and the support wire are lashed (bundled), and the support wire is fixed to the utility pole. In this method, it is necessary to place fixed-type suspension wheels at predetermined intervals in advance on the support wires that are wired between the power poles, and the work before the power cable is wired between the power poles is troublesome. there were.
Therefore, it is conceivable to employ a method in which the power cable is installed between the utility poles using the mobile hanging wheel described in Patent Document 1. By the way, when the power cable is wired, a force (twisting force) that causes the power cable to rotate may occur. For example, when the power cable is wired in a curved line (when the direction of the overhead line is bent), a rotational force due to the direction of the overhead line may occur. Further, normally, the power cable is transported in a state of being wound around a feeding drum of the power cable. However, there is a case where a rotational force due to winding by the winding of the power cable is generated.
When the power cable is installed using a mobile hanging wheel, the workability of the operation of installing the power cable is reduced by the rotational force generated in the power cable. For example, when the power cable rotates, the suspension wheel holding the power cable is shaken, the roller of the suspension wheel is detached from the support wire, and the overhead work is interrupted. In addition, in order to facilitate the fixing of the power cable to the power pole, when the messenger wire fixed to the power pole is lashed with the electric wire, the messenger wire is powered by rotating the power cable. Moving from a predetermined position in the cable (for example, the upper part in the vertical direction of the plurality of electric wires), it becomes difficult for the worker to fix the messenger wire on the utility pole.
Therefore, the problem to be solved by the present invention is to provide a technique that allows a cable to be easily installed in the air while using a movable hanging wheel.

In order to achieve the above object, the invention described in each claim is configured.
(Invention of Claim 1)
According to the first aspect of the present invention, an auxiliary device for cable wiring is configured that is used when a cable is wired along a guide line disposed between the cable support devices and can hold the cable.
The cable overhead wire auxiliary device has a concave surface recessed toward the rotation center side along the outer peripheral portion, and a roller that can roll along the guide wire in a state in which the guide wire is accommodated in the accommodating portion formed by the concave surface. When the roller is placed on the guide line, the roller is disposed below the roller and includes an opening / closing member that opens and closes the accommodating portion.
The opening / closing member can accommodate or take out the guide wire in the accommodating portion when the opening / closing member is in the open state, and the guide wire does not separate from the accommodating portion when the opening / closing member is in the closed state. It is configured.
The “cable support device” is a member that supports a cable installed in the aerial space, and is typically configured as a utility pole or a steel tower.
A typical example of the “cable overhead wire auxiliary device” corresponds to a movable hanging wheel. The auxiliary device for cable overhead wire moves along the guide wire in a state where an arbitrary portion of the cable is held. As a result, the cable can be installed along the guide line.
In addition, the description that “the guide wire is configured not to be detached from the housing portion” occurs in the cable when the roller rolls along the guide wire in a state where the guide wire is housed in the concave portion of the roller. This means that the rolling along the guide line of the roller will not be interrupted even if the auxiliary device for cable overhead is shaken by the rotational force. If it is the extent which does not do, the space | gap may be provided in the accommodating part.

If the auxiliary device for cable overhead of the present invention is used, when the roller rolls on the guide wire while the guide wire is accommodated in the accommodating portion and the cable is held by the cable holding device, the opening / closing member is closed. Thus, the guide wire housed in the housing portion does not leave the housing portion. Accordingly, it is possible to prevent interruption of the overhead wire work due to the guide wire being detached from the accommodating portion of the cable overhead wire auxiliary device, and the cable can be efficiently wired in the air. Further, the guide wire can be accommodated in or taken out of the accommodating portion by opening the opening / closing member.
Moreover, since the accommodating part is formed by the concave surface of the outer peripheral part of the roller, the structure of the accommodating part is simple and the number of assembling steps for the auxiliary device for cable overhead is small. And a guide wire can be made into the state which does not detach | leave from an accommodating part reliably only by closing an opening-and-closing member.

(Invention of Claim 2)
According to the second aspect of the present invention, an auxiliary device for cable overhead is used that is used when a cable is routed along a guide wire disposed between cable support devices, and that can hold the cable.
The auxiliary device for cable laying extends downward from both sides of the roller when the roller is mounted on the guide wire and a roller that can roll along the guide wire with the outer peripheral surface in contact with the guide wire. And an opening / closing member that opens and closes an accommodating portion formed by the outer peripheral surface of the roller and the guide member.
The opening / closing member and the guide member can accommodate or take out the guide wire in the housing portion when the opening / closing member is in the open state, and the guide wire does not separate from the housing portion when the opening / closing member is in the closed state. It is configured as follows.
In addition, the description that “the guide wire is configured not to be detached from the housing portion” is configured such that the size of the gap between the roller and the guide member is smaller than the diameter of the guide wire so that the guide wire does not enter the gap. It means that
If the auxiliary apparatus for cable trunking of this invention is used, since the accommodating part formed with the outer peripheral surface of a roller and a guide member is formed, the roller whose outer peripheral surface is not depressed in the center side can be used. Therefore, the guide wire can be easily accommodated in the accommodating portion.

(Invention of Claim 3)
According to the third aspect of the present invention, the cable holding device for holding the cable in the cable overhead auxiliary device is configured.
The cable holding device has a base attached to the auxiliary device for cable overhead and a bundling portion fixed to the base. The bundling portion includes a plurality of wall-like members that form a holding space for holding the cable in contact with the outer peripheral surface of the cable, so that the shape of the base portion and the bundling portion is not deformed while holding the cable. It is configured.
As an aspect that “the base and the binding part are configured so that the shape is not deformed while holding the cable”, typically, the base and the binding part are configured by a hard member such as metal, plastic, or FRP. The embodiment is used. As a method for fixing the base portion and the binding portion, a method of fixing the base portion and the binding portion formed separately or a method of integrally forming the base portion and the binding portion can be used.
The surface forming the holding space of the “wall-shaped member” may be in contact with the outer peripheral surface of the cable, and may be a flat surface or a curved surface.
When a buffer member such as sponge or rubber is disposed on the inner peripheral surfaces of the plurality of wall-shaped members, the space inside the buffer member corresponds to the “holding space”.

Since the base portion and the bundling portion of the cable holding device of the present invention are configured so that the shape is not deformed while holding the cable, the cable holding device (that is, the cable) rotates while holding the cable. Can be prevented. Moreover, if the cable holding device of the present invention is used, the cable is held in a state where the outer peripheral surface of the cable is in contact with a plurality of wall-like members, so that the cable held in the holding space is prevented from sliding and rotating. Can do.
In addition, when using a cable in which a plurality of wires twisted in advance are bundled together with a wire fixed to a cable support device (electric pole, steel tower, etc.) after the overhead wire, this wire is in the cable at the location of the cable support device. It is preferable that it exists in the predetermined position (for example, the upper part of the some electric wire twisted). That is, it is preferable that the cable in which the wires are bundled is wired so as not to be rotated by the rotational force generated in the cable. If the cable holding device of the present invention is used, the cable in the overhead line is prevented from rotating in the air, so that the wire can be held at a predetermined position with respect to the cable at the location of the cable support device. Thereby, a wire can be easily fixed to a cable support device.
Moreover, if the cable holding device of this invention is used, the rotational force which arises in the cable in an overhead wire in the air can be suppressed or reduced. Therefore, when the cable holding device that holds the cable is attached to the auxiliary device for cable overhead, the guide wire is detached from the housing portion of the auxiliary device for cable overhead due to the rotational force generated in the cable. Can be prevented. As a result, it is possible to prevent interruption of the overhead wire work due to the guide wire being detached from the accommodating portion of the cable overhead wire auxiliary device, and the cable can be efficiently wired in the air.

(Invention of Claim 4)
According to a fourth aspect of the present invention, there is provided a cable laying method in which a cable is laid along a guide line disposed between the cable support devices by using a plurality of cable laying auxiliary devices that hold the cable by the cable holding device. It is.
As the cable holding device, a communication hole is formed at both ends so that one end can be inserted into the other end or the other end can be inserted into one end while being arranged along the outer periphery of the cable. A cable holding device having a strip-shaped member is used.
In the first group of cable trunking auxiliary devices among the plurality of cable trunking auxiliary devices, the belt-shaped member is disposed along the outer periphery of the cable, and then one end is formed at the other end. The cable is held in a state of being inserted into the communication hole.
In the second group of cable overhead wire auxiliary devices, after the band-shaped member is disposed along the outer periphery of the cable, the other end portion is inserted into the communication hole formed in one end portion. Holding the cable.
The first group and the second group of cable overhead auxiliary devices only need to be mixed, and even if each group is configured with a plurality of cable overhead auxiliary devices, it is configured with one cable overhead auxiliary device. Also good.
The “communication hole” of the band-shaped member may be formed at both ends of the band-shaped member in a state where at least the band-shaped member is disposed along the outer periphery of the cable. Therefore, as an aspect of the belt-shaped member, it is configured as a ring-shaped belt (a band where end portions are connected), in a state where the cable is placed on the belt-shaped member and the belt-shaped member is disposed along the outer periphery of the cable. In addition, a mode in which communication holes are formed at both ends and a mode in which communication holes are provided in both ends are included.
In the first group of cable feeder auxiliary devices, after the belt-like member is disposed along the outer periphery of the cable, the cable is held in a state where one end is inserted into the communication hole formed in the other end. , And suspend one end on the auxiliary device for cable overhead. At this time, the knot of the belt-like member is narrowed by the load of the suspended cable and the like, and a unidirectional rotational force is applied to the cable. On the other hand, in the auxiliary device for cable overhead of the second group, after arranging the belt-like member along the outer periphery of the cable, the cable is inserted in the state where the other end is inserted into the communication hole formed in one end. Hold the other end and hang it on the auxiliary device for cable overhead. At this time, the knot of the belt-like member is narrowed by the load of the suspended cable and the like, and a rotational force in the direction opposite to that in the case of the first group cable auxiliary device is applied to the cable.

In the cable trunking method of the present invention, the first group of cable trunking auxiliary devices and the second group of cable trunking auxiliary devices are mixed. Accordingly, when the cable is attached to the cable overhead wire auxiliary device, the rotational force in one direction applied to the cable and the rotational force in the other direction cancel each other. Therefore, the cable can be prevented from rotating when the cable is attached to the cable overhead wire auxiliary device.
In addition, when using a cable in which a plurality of wires twisted in advance are bundled together with a wire fixed to a cable support device (electric pole, steel tower, etc.) after the overhead wire, this wire is in the cable at the location of the cable support device. It is preferable that it exists in the predetermined position (for example, the upper part of the some electric wire twisted). That is, it is preferable that the cable in which the wires are bound is not rotated by the rotational force generated in the cable. By using the cable laying method of the present invention, rotation of the cable in the overhead line is prevented in the air, so that the wire can be held at a predetermined position in the cable at the location of the cable support device. Thereby, a wire can be easily fixed to a cable support device.
In addition, according to the condition of the cable, it is possible to select whether the cable is held by the first group cable auxiliary device or the second group cable auxiliary device during the overhead line. it can. Since the cable is subjected to rotational force due to various factors, according to the cable wiring method of the present invention, it is possible to select two types of auxiliary devices for cable wiring in the overhead line, and to effectively Rotation of the cable is prevented and convenience is improved.
Moreover, if the cable wiring method of this invention is used, the rotational force which arises in the cable in an overhead wire in the air can be suppressed or reduced. Therefore, when the cable holding device that holds the cable is attached to the auxiliary device for cable overhead, the guide wire is detached from the housing portion of the auxiliary device for cable overhead due to the rotational force generated in the cable. Can be prevented. As a result, it is possible to prevent interruption of the overhead wire work due to the guide wire being detached from the accommodating portion of the cable overhead wire auxiliary device, and the cable can be efficiently wired in the air.

(Invention of Claim 5)
According to a fifth aspect of the present invention, there is provided the cable laying method according to the fourth aspect, wherein the first group of cable laying auxiliary devices and the second group of cable laying auxiliary devices are alternately arranged along the guide lines. Deploy.
As a method of alternately arranging, a method of alternately arranging one by one or a method of alternately arranging a plurality of each may be used.
If the cable wiring method of this invention is used, it can prevent more effectively that a cable rotates when a cable is attached to the auxiliary apparatus for cable wiring.

(Invention of Claim 6)
The invention according to claim 6 is the cable wiring method according to claim 4 or 5, wherein the cable holding method includes a base portion attached to the auxiliary device for cable overhead as a cable holding device, and a binding portion fixed to the base. The portion includes a plurality of wall-like members that form a holding space for holding the cable while being in contact with the outer peripheral surface of the cable, and the base portion and the binding portion are configured so that the shape is not deformed while holding the cable. Use the cable holding device.
The third group of cable overhead auxiliary devices among the plurality of cable overhead auxiliary devices hold the cable by the cable holding device having the base and the binding portion.
According to the cable laying method of the present invention, the third group of cable laying auxiliary devices has a base portion and a bundling portion whose shape is not deformed while holding the cable, and the outer periphery of the cable is attached to a plurality of wall members. Since the cable is attached using the cable holding device that holds the cable with the surfaces in contact with each other, it is possible to prevent the cable from rotating while holding the cable.

(Invention of Claim 7)
The invention according to claim 7 includes a roller capable of rolling along a guide wire disposed between the cable support devices, and the cable is connected to the cable using an auxiliary device for cable overhead that can hold the cable. This is a method of laying a cable along a guide line.
In this cable laying method, the roller is rolled along the guide line in a state in which the housing is closed so that the guide wire is not separated from the housing that is formed by at least the outer peripheral surface of the roller and accommodates the guide wire. .
The “closed state of the storage unit” may be in a state where the guide wire does not separate from the storage unit, and may be in a state where a gap is provided in the storage unit as long as the guide line does not separate from the storage unit.

  When the cable wiring method of the present invention is used, when the roller rolls on the guide wire while the guide wire is accommodated in the accommodating portion and the cable is held by the cable holding device, the accommodating portion is closed. The guide wire housed in the housing portion does not leave the housing portion. Therefore, it is possible to prevent interruption of the overhead wire work due to the guide wire being detached from the accommodating portion of the cable overhead wire auxiliary device, and the cable can be efficiently wired in the air.

  According to the auxiliary device for cable trunking, the cable holding device, and the cable trunking method of the present invention, the cable can be easily suspended in the air while using the movable suspension wheel.

Hereinafter, an example of the best mode for carrying out the present invention will be described with reference to the drawings.
In the present embodiment, a description will be given of a case where a 77 kV-class power cable is installed between utility poles, according to the auxiliary device for cable installation and the method for connecting a cable. The power cable used in the present embodiment is formed by twisting three electric wires for each phase of a three-phase power source, and is bundled (lashed) together with a messenger wire. And by attaching the power cable to the attachment member of the suspension wheel and holding the power cable with the suspension wheel, by rolling the roller of the suspension wheel along the support wire previously arranged between the power poles, Route the power cable in the space between the utility poles.
1 to 4 show an outline of a procedure for connecting a power cable. FIG. 5 shows a cross section of the power cable, and FIG. 6 shows an appearance of the side surface of the power cable. In FIG. 7, the top view and side view of a hanging wheel are shown. 8 to 10 show a procedure for holding the power cable on the suspension wheel. FIG. 11 shows an example of a cable holding device for holding a power cable in the hanging wheel shown in FIG. FIG. 12 shows a plan view and a side view of a guide roller (four-side roller described later) for facilitating the extension of the power cable from the utility pole.

First, the outline | summary of the procedure which wires the electric power cable 10 is demonstrated using FIGS. 1-4.
Here, the case where the power cable 10 is installed in the overhead between the utility poles X1 to Xn will be described. The utility poles are arranged at intervals of about 40 m.
The power pole X1 is provided with a ball roller 50 capable of extending the power cable 10 at a height (overhead position, for example, about 15 m) where the power cable 10 is installed. The ball roller 50 is provided with two rollers 51 and 52 arranged in the horizontal direction. The rollers 51 and 52 are configured to be rotatable by a motor (not shown), one counterclockwise and the other clockwise. Therefore, by arranging the power cable 10 between the rollers 51 and 52 and operating the motor, the power cable 10 is directed from the utility pole X1 to the utility pole X2 (the overhead line direction, that is, the left-to-right direction shown in FIG. 1). It has a configuration that can be extended.
The power pole X2 is provided with a guide roller 60 that supports the power cable 10 in the extending direction at a height at which the power cable 10 is installed. As shown in FIG. 12, the guide roller 60 is configured as a four-sided roller in which four rollers are combined in a square shape. Thereby, the power cable 10 is supported on the inner side of the quadrangle formed by the four rollers. Moreover, since it is supported by the roller, the power cable can be easily drawn out in the overhead line direction.
The ball roller 50 for feeding out the power cable 10 is disposed, for example, every seven power poles (about 240 m intervals), and guide rollers 60 are disposed on the other power poles.

The worker first lays the support wire 20 and the overhead wire 70 in order from the utility pole X1, the utility pole X2, and the utility pole Xn. The overhead wire 70 passes between the rollers 51 and 52 of the ball roller 50 in the electric pole where the ball roller 50 is arranged, and passes inside the guide roller 60 in the electric pole where the guide roller 60 is arranged. That is, the power cable 10 is installed at a position where the power cable 10 is installed.
Then, as shown in FIG. 1, the power cable 10 is pulled out from the feeding drum 30 disposed on the power pole X1 side, passed between the rollers 51 and 52 of the ball roller 50, and the feeding source side of the overhead wire 70 previously wired. Connect to the end of the. The end of the overhead wire 70 on the delivery destination side is wound around a winding drum 40 disposed on the power pole Xn side.
The location on the end side of the power cable 10 connected to the overhead wire 70 is held by a suspension wheel 100 disposed on the support wire 20. A detailed configuration of the hanging wheel 100 and a detailed arrangement method for the power cable 10 and the support wire 20 will be described later.

Next, the winding drum 40 around which the overhead wire 70 is wound is operated, and the motor of the ball roller 50 disposed on the utility pole X1 is operated.
As a result, the power cable 10 is fed out in the direction of the utility pole X2 (the overhead line direction), and the suspension wheel 100 moves in the direction of the utility pole X2 together with the power cable 10 while holding the power cable 10.
Then, as shown in FIG. 2, the portion of the power cable 10 that is drawn from the utility pole X1 is sequentially held by the suspension wheels 101, 102,...
As shown in FIG. 3, when the suspension wheel 100 (the end portion of the power cable 10) reaches the position of the utility pole X <b> 2, an operator waiting on the utility pole X <b> 2 removes the suspension wheel 100 from the support wire 20. Remove from the power cable 10. Then, the power cable 10 is attached to the suspension wheel 100 and attached to the support wire 20 at the place where the removed suspension wheel 100 is extended from the utility pole X2 (on the right side of the utility pole X2 in FIG. 3).
Similarly, the suspension wheels 101, 102,... That sequentially reach the position of the utility pole X2 are also replaced with the places on the delivery destination side (right side of the utility pole X2 in FIG. 3) from the utility pole X2.
By performing this operation at each of the power poles X1 to X (n-1), as shown in FIG. 4, the tip of the power cable 10 reaches the position of the power pole Xn. Therefore, the suspension wheel 100 is removed from the support wire 20 and removed from the power cable 10 before the utility pole Xn. In this state, when the power cable 10 is further unwound, the end of the power cable 10 passes between the rollers of the ball roller 50 disposed on the power pole Xn.
Then, the power cable 10 is sequentially removed from the suspension wheels 101, 102,... In front of the utility pole Xn, and the power cable 10 is installed in the space between the utility poles X1 to Xn. The power cable 10 may be wound around the winding drum 40 by an appropriate amount.
As described above, after the power cable 10 is wired between the power poles X1 to Xn, the power cable 10 is fixed to the power poles X1 to Xn (specifically, the messenger wire connected together with the power cable 10 is connected to the power pole) X1 to Xn), and remove the suspension wheel 100 from the support wire 20 and from the power cable 10.
The “electric poles X1 to Xn” of the present embodiment correspond to the “cable support device” of the present invention, and the “support wire 20” of the present embodiment corresponds to the “guide wire” of the present invention. The “power cable 10” of the form corresponds to the “cable” of the present invention, and the “crane wheel 100” of the present embodiment corresponds to the “auxiliary device for cable overhead” of the present invention.

Here, first, a detailed configuration of the power cable 10 will be described with reference to FIGS. 5 and 6.
As shown in FIG. 6, the power cable 10 is formed by twisting three electric wires u, v, and w for each phase of a three-phase power source.
Since the power cable 10 is formed by twisting three electric wires u, v, and w, a cross section perpendicular to the longitudinal direction of the power cable 10 (see FIG. 5 which is a cross-sectional view taken along line AA in FIG. 6). If it sees, the three electric wires u, v, and w will be arrange | positioned in the substantially triangular shape which adjacent electric wires contact. The arrangement relationship of the electric wires u, v, and w varies depending on the position of the power cable 10 in the longitudinal direction.
Moreover, when fixing the power cable 10 to each electric pole, it fixes by fixing the messenger wire 11 to each electric pole. For this reason, the power cable 10 is bundled together with the messenger wire 11 by the lashing tape 12. Here, in order to facilitate the operation of fixing the messenger wire 11 to each power pole, the messenger wire 11 is bound so that the arrangement position with respect to the power cable is the same. In the present embodiment, as shown in FIGS. 5 and 6, the power cables 10 are bound by the lashing tape 12 so as to be arranged vertically above the power cables 10 when viewed in a cross section perpendicular to the longitudinal direction of the power cables 10. .

Note that when the power cable 10 is wired, a force (twisting force) that causes the power cable to rotate may be generated. For example, when the power cable 10 is wired in a curved line (when the direction of the overhead line is bent), a rotational force due to the direction of the overhead line may occur. In addition, there may be a rotational force caused by the winding rod due to the power cable 10 being wound around the feeding drum 30 or a rotational force due to the rotation of the overhead wire 70 transmitted to the power cable 10. For this reason, when the suspension wheel 100 is rolled on the support wire 20 in a state where the power cable 10 is held on the suspension wheel 100, the suspension wheel 100 is rolled by the rotational force generated in the power cable 10. A device for preventing the surface from being detached from the support wire 20 is required. In addition, it is necessary to devise a means for preventing the messenger wire 11 from being displaced from the vertical direction of the power cable 10 at the position of the power pole by the power cable 10 being rotated in the air by the rotational force generated in the power cable 10. .
Therefore, in the present embodiment, the hanging wheel 100 shown in FIG. 7, the binding band 200 shown in FIGS. 8 to 10, and the binding metal fitting 300 shown in FIG. 11 are used.

As shown in FIG. 7, the hanging wheel 100 includes a rolling part 110 that rolls on the support wire 20 and an attachment member 120 to which the power cable 10 is attached.
The rolling unit 110 is provided with a roller 111 that contacts the support wire 20. The roller 111 has a substantially U-shaped cross section, and an opening 112 a is accommodated in a downward bracket 112, and is rotatably supported by the bracket 112 by a rotation shaft 113. In addition, a recess-forming surface is formed on the outer peripheral portion of the roller 111 to form a recess 111a that is recessed toward the center when viewed from the rolling direction. A housing portion for housing the support wire 20 is formed by the recess 111a. Further, when the roller 111 rolls along the support wire 20, the support wire 20 comes into contact with the recess forming surface that forms the recess 111 a.
The substantially U-shaped bracket 112 is provided with an upper surface 112b and side surfaces 112c and 112d. The side surface 112d is longer than the side surface 112c from the upper surface 112b (the vertical dimension shown in FIG. 7). ing. A mounting member 120 is provided on the side surface 112d.
Further, the side surface 112d is provided with an opening / closing member 114 having a length (dimension in the left-right direction shown in FIG. 7) that can close the recess 111a. The opening / closing member 114 includes a pin 114a disposed so as to penetrate the side surface 112d, and an operation portion 114b configured as a substantially columnar knob that can be rotated halfway clockwise or counterclockwise. The operation unit 114b is provided on the side of the side surface 112d opposite to the side surface 112c (outside the suspension wheel 100) and attached to the pin 114a. The opening / closing member 114 is urged by an elastic member (not shown) such as a spring in a direction in which the concave portion 111a is closed by the pin 114a (left direction shown in the plan view of FIG. 7). Then, pulling the operating portion 114b against the urging force of the elastic member (moving it in the right direction as shown in the plan view of FIG. 7), the operating portion 114b is rotated halfway clockwise or counterclockwise, and is locked and pulled. The pin 114a is fixed at the position. That is, the pin 114a is fixed in a state where the recess 111a is opened. The length of the pin 114a (the dimension in the left-right direction shown in the plan view of FIG. 7) is set such that the support wire 20 can be accommodated and removed from the recess 111a of the roller 111 in a locked state. . In addition, the length of the pin 114a is such that the support wire 20 is moved from the concave portion 111a of the roller 111 in a state where the lock is released by rotating the operation portion 114b halfway clockwise or counterclockwise, and being biased by the elastic member. The length is set so as not to drop off.
Thus, by providing the opening / closing member 114 that opens and closes the recess in which the support wire 20 is accommodated, the roller 111 can be prevented from falling off the support wire 20.

The attachment member 120 provided on the side surface 112d of the bracket 112 includes a base 121 and a support portion 122 for attaching the binding band 200 and the binding bracket 300 (details will be described later) on which the power cable 10 is held.
The support part 122 includes a key-shaped member 122a and a lock part 122b. The lock portion 122b is provided at the opening of the key-like member 122a and is urged by a spring or the like in the direction of closing the opening.
The power cable 10 is bound by a binding band 200 such as a nylon sling, and one side of the binding band 200 is attached to the support portion 122. That is, one side of the binding band 200 is hooked on the key-shaped member 122a while pressing the lock portion 122b provided at the opening of the key-shaped member 122a. When one side of the binding band 200 is passed through the opening, the lock portion 122b automatically closes the opening by an urging force such as a spring. The method for binding the power cable 10 using the binding band 200 will be described in detail later.
The “concave portion 111a” of the present embodiment corresponds to the “accommodating portion” of the present invention, the “roller 111” of the present embodiment corresponds to the “roller” of the present invention, and the “opening / closing member 114 of the present embodiment”. "Corresponds to" opening / closing member "of the present invention, and" tie band 200 "of the present embodiment corresponds to" cable holding device "or" band member "of the present invention.

Here, a bundling method (holding method) of the power cable 10 using the bundling band 200 will be described.
As shown in FIG. 8, the binding band 200 is configured as a ring-shaped band formed of a material such as nylon. Then, in a state where the power cable 10 is placed above the binding band 200, the power cable 10 is wrapped with the binding band 200 from the right side and the left side in the overhead line direction (the depth direction shown in FIGS. 8 to 10), and is shown in FIG. As described above, the right end portion of the binding band 200 is passed through the ring-shaped portion formed at the left end portion of the binding band 200. Alternatively, as shown in FIG. 10, the left end portion of the binding band 200 is passed through a ring-shaped portion formed at the right end portion of the binding band 200. As a result, the cable tie 200 is disposed on the power cable 10. Then, when the binding band 200 is disposed as shown in FIG. 9, the right end of the binding band 200 is hooked on the key-shaped member 122 a of the attachment member 120 of the suspension wheel 100. At this time, the power cable 10 is held by the suspension wheel 100 in a state of being bound by the binding band 200 while rotating slightly counterclockwise as shown in FIG. 9 due to its own weight. On the other hand, when the binding band 200 is disposed as shown in FIG. 10, the left end of the binding band 200 is hooked on the key-shaped member 122 a of the attachment member 120 of the suspension wheel 100. At this time, the power cable 10 is held by the suspension wheel 100 in a state where the power cable 10 is bound by the binding band 200 while rotating slightly clockwise as shown in FIG.
As a mode for holding the power cable 10 on the hanging wheel 100 arranged on the support wire 20, a mode in which the right end of the binding band 200 arranged as shown in FIG. 9 is attached to the key-shaped member 122a. The aspect which attaches the left-side edge part of the binding band 200 arrange | positioned as shown in FIG. 10 to the key-shaped member 122a is implemented alternately along an overhead line direction.
Thus, the rotational force which arises in the power cable 10 can be weakened by making the binding direction of the power cable 10 by the binding band 200 alternately reverse.
In this embodiment, either the suspension car supporting the power cable 10 as shown in FIG. 9 or the suspension car supporting the power cable 10 as shown in FIG. Corresponds to the “first group of cable feeder auxiliary devices” of the present invention, and the other corresponds to the “second group of cable feeder auxiliary devices” of the present invention.

If the binding direction of the power cable 10 by the binding band 200 is simply reversed, the effect of weakening the rotational force generated in the power cable 10 may be small. For this reason, in this embodiment, the power cable 10 that is bound and held by the binding metal fitting 300 (see FIG. 11) is attached to the approximately ten suspension wheels instead of the binding band 200 described above.
The “bundling bracket 300” of the present embodiment corresponds to the “cable holding device” of the present invention.
Below, the structure about this binding metal fitting 300 is demonstrated.
The binding bracket 300 is made of a material whose shape is not deformed by the rotational force generated in the power cable 10, for example, a metal such as iron, a hard resin, or the like, and has a base portion 310 having a ring 311 that is hooked on the support portion 122 of the suspension wheel 100. And a bundling portion 320 that forms a cable holding space 320 a for holding the power cable 10. The base portion 310 and the binding portion 320 are fixed by a method such as welding.
The bundling portion 320 is attached to the cable housing member 321 configured to form a cable holding space 320a having a substantially equilateral triangular inner peripheral surface in a state in which the power cable 10 is housed, and the cable housing member 321 vertically below the cable housing member 321. And a lock portion 323 for fixing the power cable 10 to the cable holding space 320a.
Each side of the substantially triangular shape of the cable holding space 320a abuts on the cables u, v, and w constituting the power cable 10 so that the inner periphery of the cross section becomes the smallest equilateral triangle that circumscribes the cross section of the power cable 10. The dimensions are selected. A sheet-like buffer member (not shown) is attached to the inner peripheral surface of the cable housing member 321 forming the cable holding space 320a, and the surface of the housed power cable 10 is damaged. Is configured to not.
The cable housing member 321 has a substantially equilateral triangle in the state in which the power cable 10 is housed. The wall-like member 321a forming the substantially equilateral triangle and forming the left side shown in the plan view of FIG. The substantially V-shaped wall-shaped member 321b that forms the side of is formed of separate members. The wall member 321a is connected to the wall member 321b so as to be rotatable in a direction to open and close the substantially V-shaped opening of the wall member 321b. As a result, when the wall-shaped member 321a opens the substantially V-shaped opening of the wall-shaped member 321b, the power cable 10 can be accommodated or removed from the cable holding space 320a, and the wall-shaped member 321a becomes the wall-shaped member 321b. When the substantially V-shaped opening is closed, the power cable 10 is accommodated and fixed in the cable holding space 320a.

Note that the engaged portion 323b of the lock portion 323 is attached to the right side (the right side shown in FIG. 11) of the wall-shaped member 321b. As the engaged portion 323b, a substantially U-shaped member in cross section is attached such that an opening is disposed above the portion shown in FIG. Further, a stopper portion 323k that locks an engaging portion 323j (details will be described later) of an engaging member 323h engaged with the engaged portion 323b is formed on each side surface of the engaged portion 323b.
On the other hand, a base 323d for the lock portion 323 is provided on the wall member 321a. A grip support 323e is provided on the base 323d, and the grip 323a is supported by the grip support 323e so as to be rotatable about a rotation shaft 323f. Further, an engagement member 323h that engages with the engaged portion 323b is attached to the grip 323a. The engaging member 323h has a rod-like member, and an engaging portion 323j orthogonal to the rod-like member is attached to one end side of the rod-like member. The engaging portion 323j is formed with a length larger than the opening width (the dimension in the depth direction shown in FIG. 11) of the opening portion of the engaged portion 323b. And the other end side of the rod-shaped member of the engaging member 323h is rotatably supported by the grip 323a by the rotating shaft 323g.

Therefore, when the grip 323a is pulled upward as shown in FIG. 11, the grip 323a rotates clockwise around the rotation shaft 323f, and the position of the rotation shaft 323g in the horizontal direction (left-right direction shown in FIG. 11) is Slightly moves to the right as shown in FIG. Thereby, the engaging part 323j attached to one end side of the engaging member 323h moves rightward, and the lock of the engaging part 323j by the stopper 323k is released. And the engaging part 323j can be removed from the opening part of the to-be-engaged part 323b. When the engaging portion 323j is removed from the opening of the engaged portion 323b, the wall-shaped member 321a is rotated in the direction to open the substantially V-shaped opening of the wall-shaped member 321b (counterclockwise as shown in FIG. 11). Can be made. As a result, the power cable 10 can be accommodated or removed from the cable holding space 320a.
In order to house and fix the power cable 10 in the cable holding space 320a, the engaging portion 323j is engaged with the engaged portion 323b and the engaging portion 323j is locked by the stopper portion 323k in the reverse order of the above procedure. To do. Thereby, the power cable 10 is fixed to the cable holding space 320a in a state where the messenger wire 11 is on the upper side.
The suspension wheel to which the power cable 10 held by the binding metal fitting 300 of the present embodiment is attached corresponds to the “third group cable auxiliary device” of the present invention.

  According to the present embodiment, in the hanging wheel 100, the roller 111 is supported by the opening / closing member 114 while the supporting wire 20 is accommodated in the accommodating portion 111a and the power cable 10 is held by the binding band 200 or the binding bracket 300. When rolling on 20, the opening / closing member 114 is closed so that the support wire 20 accommodated in the accommodating portion 111a does not separate from the accommodating portion 111a. Therefore, it is possible to prevent the overhead wire work from being interrupted due to the support wire 20 being detached from the housing portion 111a of the hanging wheel 100, and the power cable 10 can be efficiently wired in the air. Further, the support wire 20 can be accommodated in or taken out of the accommodating portion 111a with the opening / closing member 114 opened.

  Further, according to the present embodiment, the surface forming the accommodating portion 111 a is configured by the outer peripheral portion of the roller 111 except for the opening portion that accommodates the support wire 20 or takes out the support wire 20. Therefore, only by closing the opening formed in the roller 111 with the opening / closing member 114, the support wire 20 is not detached from the accommodating portion 111, and the configuration is simple.

Further, according to the present embodiment, when the power cable 10 is attached to the hanging wheel 100 disposed on the support wire 20, the right end of the binding band 200 disposed as shown in FIG. The mode of attaching to the member 122a and the mode of attaching the left end of the binding band 200 arranged as shown in FIG. 10 to the key-shaped member 122a are alternately performed along the overhead line direction. When the power cable 10 held by the binding band 200 is suspended from the key-shaped member 122a, the knot of the binding band 200 is narrowed by the weight of the power cable 10, and a rotational force is applied to the power cable 10. The direction in which this rotational force is applied is the counterclockwise direction shown in FIG. 9 in the embodiment in which the right end of the binding band 200 arranged as shown in FIG. 9 is attached to the key-shaped member 122a, and is shown in FIG. The mode in which the left end of the binding band 200 arranged in this manner is attached to the key-shaped member 122a is the clockwise direction shown in FIG. In the present embodiment, when the binding direction of the power cable 10 by the binding band 200 is alternately reversed, the rotational force in one direction and the rotational force in the other direction cancel each other, and the rotational force generated in the power cable 10 Can be suppressed or reduced. Therefore, it is possible to prevent the power cable 10 from being wired while being rotated.
As a result, the power cable 10 is easily installed at the position of each power pole so that the messenger wire 11 in the power cable 10 is at a predetermined position (in the present embodiment, above the electric wires u, v, and w). be able to. Thereby, it is easy to fix the messenger wire 11 to the utility pole.
By the way, since the rotational force by various factors is applied to the electric power cable 10, the magnitude | size and direction may be unpredictable. According to the present embodiment, the right end of the binding band 200 is attached to the key-shaped member 122a or the left side of the binding band 200 according to the situation of the power cable 10 in the overhead line while the power cable 10 is in the overhead line. It is possible to select whether to attach the end of this to the key-shaped member 122a. Therefore, the rotation of the cable in the overhead line is effectively prevented by the selection at the site, and the convenience is improved.

  Moreover, according to this Embodiment, the electric power cable 10 hold | maintained by the binding metal fitting 300 is attached to about every 10 suspension wheels. Since the binding fitting 300 is made of metal and the base portion 310 and the binding portion 320 are fixed, the rotational force generated in the power cable 10 acts to prevent the binding bracket 300 and thus the power cable 10 from rotating. be able to. Further, the bundling bracket 300 holds the power cable 10 in a state where the outer peripheral surface of the power cable 10 is in contact with the wall-shaped members 321a and 321b, thereby preventing the power cable 10 held in the holding space from sliding and rotating. can do. Therefore, the arrangement state of the wires u, v, w twisted in advance and the messenger wire 11 in the power cable 10 at the location of each power pole is a predetermined arrangement state (in this embodiment, the electric wires u, v , W can be maintained in a state where the messenger wire 11 is arranged on the upper part. Thereby, it is easy to fix the messenger wire 11 to the utility pole.

Note that the present invention is not limited to the configuration described in the embodiment, and various changes, additions, and deletions are possible.
In the present embodiment, when using the suspension wheel 100 provided with the accommodating portion 111a of the support wire 20 and the opening and closing member 114 and holding the power cable 10 in the suspension wheel 100 disposed on the support wire 20, A mode in which the right end of the binding band 200 arranged as shown in FIG. 9 is attached to the key-shaped member 122a and a left end of the binding band 200 arranged as shown in FIG. 10 to the key-shaped member 122a. The manner of attaching is alternately performed along the overhead line direction, and the case where the power cable 10 held by the binding metal fitting 300 is attached to about every ten suspension wheels has been described. However, it may not be performed alone, or may be performed alone or in a predetermined combination.
In the present embodiment, the right end of the binding band 200 arranged as shown in FIG. 9 is attached to the key-shaped member 122a, and the left side of the binding band 200 arranged as shown in FIG. The case where the end portions are attached to the key-like member 122a has been described as being alternately performed along the overhead line direction. However, the term “alternately performing” refers to the case of alternately performing one by one and a plurality of each. Including the case where it carries out alternately. Moreover, the aspect shown in FIG. 9 and the aspect shown in FIG.
In addition, a weight having a predetermined weight may be attached to the weight attaching portion 322 provided on the bottom side (the lower side shown in FIG. 11) of the wall-like member 321b of the binding metal fitting 300 of the present embodiment, for example. According to this, since the weight of the weight is applied to the power cable 10 in the overhead wire in addition to the own weight of the bundling fitting 300, it is possible to more effectively prevent the power cable 10 in the overhead wire from rotating in the air. .
Moreover, although this Embodiment demonstrated as a power cable 10, the case where the cable which three wires u, v, and w were twisted beforehand and the cable in which the messenger wire 11 was bundled with the lashing tape were wired. The hanging wheel 100 of the present embodiment can be applied to a cable that is not twisted in advance, a single-wire cable, or the like. Since the suspension wheel 100 is provided with the accommodating portion 111a and the opening / closing member 114, the support wire 20 is not detached from the accommodating portion 111a due to the influence of wind or the like.
Note that the configuration of the opening / closing member 114 and the accommodating portion 111a of the hanging wheel 100 is not limited to the present embodiment, and the opening / closing member 114 may be formed by the support wire 20 when the support wire 20 is accommodated. The housing portion 111a can be closed so as not to be detached, and the housing portion 111a may be opened when the support wire 20 is housed and removed from the housing portion 111a. Since the opening / closing member 114 of the present embodiment is configured so that the above-described operation can be operated with one hand, the convenience for an operator working at a high place is improved.
As shown in FIG. 13, the housing portion 411 a of the hanging wheel 400 may be formed by an outer peripheral surface of the roller 411 and a bracket 401 (guide member) extending downward from both sides of the roller 411. In this case, the roller 411 can be a roller whose outer peripheral surface is not recessed toward the center. Therefore, the support wire 20 can be easily accommodated in the accommodating portion 411a. The opening / closing member 414 of the hanging wheel 400 has the same configuration and function as the opening / closing member 114 of the hanging wheel 100 shown in FIG.
Further, in the present embodiment, the case where the power cable 10 is fed out while winding the overhead wire 70 connected to the power cable 10 connected using the feeding drum 30, the ball roller 50, and the winding drum 40 has been described. The cable 10 may be drawn out only by the feeding drum 30 or the ball roller 50 and wired. Alternatively, the winding wire 40 may be wired only by winding the overhead wire 70 to which the power cable 10 is connected.
Further, in the present embodiment, the case where the binding cable 200 and the binding bracket 300 are used as the binding member (cable holding device) and the power cable 10 is attached to the attachment member 120 of the suspension wheel 100 has been described. However, the configuration of the mounting member 120 and the configuration of the mounting member 120 are not limited to this, and it is sufficient that the power cable 10 can be held by the suspension wheel 100.
In the present embodiment, the base 310 and the binding portion 320 of the binding metal fitting 300 are described as being formed separately and fixed by welding or the like, but the base 310 and the binding portion 320 are integrally formed. May be.

An outline of the procedure for connecting the power cable 10 is shown. An outline of the procedure for connecting the power cable 10 is shown. An outline of the procedure for connecting the power cable 10 is shown. An outline of the procedure for connecting the power cable 10 is shown. 1 is a cross-sectional view of a power cable 10. FIG. The external appearance of the side surface of the power cable 10 is shown. The top view and side view of the hanging wheel 100 are shown. A procedure for attaching the power cable 10 to the hanging wheel 100 using the cable tie 200 will be described. A procedure for attaching the power cable 10 to the hanging wheel 100 using the cable tie 200 will be described. A procedure for attaching the power cable 10 to the hanging wheel 100 using the cable tie 200 will be described. The top view and side view of the binding metal fitting 300 are shown. The top view and side view of the guide roller 60 are shown. The other example of the accommodating part 411a which accommodates the support wire 20 is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electric power cable 11 Messenger wire 20 Support wire 30 Feeding drum 40 Winding drum 50 Ball roller 60 Guide roller 70 Overhead wire 100 Hasp wheel 110 Rolling part 111 Roller 111a Housing part 114 Opening / closing member 120 Mounting member 122 Supporting part 200 Binding band 300 Bundling bracket 310 Base 320 Bundling portion 321a, 321b Wall-shaped member u, v, w Electric wire

Claims (7)

A cable feeder auxiliary device that is used when laying a cable along a guide wire disposed between cable support devices and can hold the cable,
A concave surface recessed toward the rotation center side is provided along the outer peripheral portion, and a roller capable of rolling along the guide line in a state in which the guide line is accommodated in an accommodating portion formed by the concave surface,
When the roller is placed on the guide line, the roller is disposed below the roller, and includes an opening / closing member that opens and closes the accommodating portion,
The opening / closing member can accommodate or take out the guide wire in the housing portion when the opening / closing member is in an open state, and the guide wire does not separate from the housing portion when the opening / closing member is in a closed state. Configured as
An auxiliary device for a cable overhead line. A cable feeder auxiliary device that is used when laying a cable along a guide wire disposed between cable support devices and can hold the cable,
A roller capable of rolling along the guide line with an outer peripheral surface in contact with the guide line;
A guide member extending downward from both sides of the roller when the roller is placed on the guide line;
An opening / closing member that opens and closes a housing formed by the outer peripheral surface of the roller and the guide member;
The opening / closing member and the guide member can store or take out the guide wire in the housing portion when the opening / closing member is in the open state, and the guide wire is housed in the housing when the opening / closing member is in the closed state. Configured not to leave the department,
An auxiliary device for a cable overhead line. A cable holding device for holding a cable in an auxiliary device for cable overhead wire,
A base portion attached to the auxiliary device for cable overhead, and a binding portion fixed to the base portion;
The bundling portion includes a plurality of wall-like members that form a holding space for holding the cable in a state of being in contact with the outer peripheral surface of the cable,
The base part and the bundling part are configured so that the shape is not deformed while holding the cable.
A cable holding device. A cable laying method for laying a cable along a guide line disposed between cable support devices using a plurality of cable laying auxiliary devices for holding a cable by a cable holding device,
As the cable holding device, a communication hole is formed at both ends so that one end can be inserted into the other end or the other end can be inserted into one end while being arranged along the outer periphery of the cable. Using a cable holding device having a strip-shaped member,
Among the plurality of cable feeder auxiliary devices, the first group of cable feeder auxiliary devices is formed such that one end portion is formed at the other end portion after the belt-like member is disposed along the outer periphery of the cable. Hold the cable in a state of being inserted into the communication hole,
In the second group of cable overhead wire auxiliary devices, after the belt-like member is disposed along the outer periphery of the cable, the other end portion is inserted into a communication hole formed in one end portion. Hold the cable,
A cable overhead wiring method characterized by that. It is a cable wiring method of Claim 4, Comprising:
The first group of cable overhead auxiliary devices and the second group of cable overhead auxiliary devices are alternately arranged along the guide lines,
A cable overhead wiring method characterized by that. It is a cable wiring method of Claim 4 or 5,
The cable holding device includes a base attached to the cable overhead wire auxiliary device and a bundling portion fixed to the base, and the bundling portion holds the cable in contact with an outer peripheral surface of the cable. A plurality of wall-shaped members that form a holding space to be used, and the base and the bundling portion use a cable holding device configured so that the shape is not deformed while holding the cable,
A third group of cable overhead auxiliary devices among the plurality of cable overhead auxiliary devices holds the cable by the cable holding device having the base and the binding portion.
A cable overhead wiring method characterized by that. A cable that has a roller that can roll along a guide line disposed between cable support devices, and that uses a cable wire auxiliary device that can hold the cable to wire the cable along the guide line. An overhead wire method,
Rolling the roller along the guide line in a state where the storage part is closed so that the guide line is not separated from the storage part that is formed by at least the outer peripheral surface of the roller and stores the guide line.
A cable overhead wiring method characterized by that.

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