JP2021126013A - Cross arm for installing cable - Google Patents

Abstract

To provide a cross arm for installing a cable which enables cables to be installed with a predetermined distance secured therebetween.SOLUTION: A cross arm includes: a cross arm body 2 which has a rod-like shape and in which a cable 110 may be installed in at least one end side; and an attachment band 4 which is provided at the other end side of the cross arm body 2 and used to attach the cross arm body 2 to an electric pole P. The cross arm body 2 includes a refraction body 3 and rotates at the refraction body 3 to adjust an installation height of the cable 110.SELECTED DRAWING: Figure 1

Description

Regarding the arm for erection of cables for erection of cables such as communication lines and electric wires on utility poles.

For example, when a communication line is erected or attached to a utility pole, construction is carried out by each communication carrier so that the distance between the communication lines is secured at a predetermined distance (legal distance) or more. However, since there are few erection locations, a new communication line may be erected near the existing communication line even though the communication line interval is less than a predetermined distance.

For this reason, it is necessary to regularly patrol whether or not there is an erection in which such a separation is not secured. Moreover, when it was confirmed that the erection was not secured, it was necessary to consult with the relevant telecommunications carrier and carry out construction work to change the erection location, which required a great deal of time and labor.

On the other hand, there is known a support device capable of arranging electric wires at predetermined intervals (see, for example, Patent Document 1). In this support device, a V-shaped first arm is attached to a utility pole at an upper part and a lower part, and a plurality of insulators for supporting an electric wire are arranged at predetermined intervals on an inclined portion of the first arm. ..

Japanese Unexamined Patent Publication No. 06-153349

By the way, since the space above the utility pole is limited, even if a horizontally extending arm is attached to the utility pole, for example, when a new communication line is erected on the arm, the existing communication line will be used. In some cases, it may not be possible to secure a predetermined distance between the two, and the actual situation is that the erection position is difficult. Further, even if a communication line is erected using the support device described in Patent Document 1, it is difficult to secure a predetermined separation when a new communication line is erected thereafter. That is, for example, even if a horizontally extending arm is attached between the upper part and the lower part of the first arm, a new communication line is erected between the communication lines already erected by the support device. It is not possible to secure a predetermined separation.

Therefore, an object of the present invention is to provide a cable erection arm capable of erection of a cable while securing a predetermined distance.

In order to solve the above problems, the invention of claim 1 is provided with a rod-shaped arm body on which a cable can be erected at least on one end side and an arm body provided on the other end side of the arm body. The arm body is provided with a bending portion, and the erection height of the cable can be adjusted by rotating the bending portion. It is a cable erection arm.

The invention of claim 2 is characterized in that, in the cable erection arm according to claim 1, the refracting portion is provided on the other end side of the arm body.

The invention of claim 3 is characterized in that, in the cable erection arm according to claim 1, the refracting portion is provided at a central portion between one end side and the other end side of the arm metal body. And.

The invention of claim 4 is characterized in that the cable erection arm according to claim 1 is provided with a plurality of the refracting portions.

The invention of claim 5 is characterized in that, in the cable erection arm according to claims 1 to 4, the arm body is expandable and contractible.

According to the invention of claim 1, since the erection height of the cable can be adjusted by rotating the arm body with the refracting portion, the cable can be secured with a predetermined separation even in a limited erection space. Can be erected. That is, in the conventional arm metal, since it extends horizontally at right angles to the utility pole, the arm metal attachment interval and the cable interval are equal, and the arm metal attachment interval must be secured at a predetermined distance. , It is not possible to secure a predetermined separation between cables. On the other hand, according to this cable erection arm, even when the attachment interval of the arm cannot secure a predetermined distance, the arm body is rotated by the bending portion to increase the erection height of the cable. By adjusting, it is possible to secure a predetermined separation between the cables.

Moreover, since a predetermined separation can be secured simply by rotating the arm body with the refracting portion without moving the co-frame, the erection work can be performed easily and quickly, and the co-frame can be erected easily and quickly. It is possible to secure a predetermined distance even if there is no moving space. In addition, when a plurality of arms for erection of this cable are arranged, one adjacent arm body may be rotated or the other arm body may be rotated depending on the erection state and the surrounding environment. Alternatively, by rotating both arm bodies, it is possible to more flexibly and surely secure a predetermined separation.

According to the invention of claim 2, since the bending portion is provided on the other end side away from one end side of the arm metal body and the arm metal body rotates about the other end side, that is, one end side of the arm metal body, that is, It is possible to greatly adjust the erection height of the cable. As a result, it is possible to flexibly and surely secure a predetermined separation according to the erection state and the surrounding environment.

According to the third aspect of the present invention, since the bending portion is provided in the central portion of the arm body and the arm body rotates (bends) in the central portion, it is flexible and reliable depending on the erection state and the surrounding environment. It is possible to secure a predetermined distance. For example, even if the arm body cannot be bent at the other end because there is a common object around the utility pole, the arm body can be bent at the center and the one end side can be moved up and down to achieve a predetermined separation. It will be possible to secure it.

According to the invention of claim 4, since a plurality of refracting portions are provided and the arm body is bent at a plurality of locations, it is possible to flexibly and surely secure a predetermined separation according to the erection state, the surrounding environment, and the like. It becomes. For example, it is possible to secure a predetermined separation by moving one end side up and down while bending the arm body body at a plurality of places so as to avoid a common frame.

According to the invention of claim 5, since the arm body can be expanded and contracted, it is possible to flexibly and surely secure a predetermined separation according to the erection state, the surrounding environment, and the like. That is, it is possible to secure a predetermined separation by rotating the arm body at the refracting portion and extending or contracting it according to the erection position of another cable or the like.

It is a front view which shows the arrangement state of the arm metal for cable erection which concerns on Embodiment 1 of this invention. It is a front view which shows the erection tool arranged in the arm metal body of the arm metal for cable erection of FIG. It is a front view which shows the arrangement state of the arm metal for cable erection which concerns on Embodiment 2 of this invention. It is a front view which shows the arrangement state of the arm metal for cable erection which concerns on Embodiment 3 of this invention. It is a front view which shows the arrangement state of the arm metal for cable erection which concerns on Embodiment 4 of this invention.

Hereinafter, the present invention will be described based on the illustrated embodiment.

(Embodiment 1)
1 and 2 show the embodiment, and FIG. 1 is a front view showing the arrangement state of the cable erection arm 1 according to the embodiment. The cable erection arm 1 is a hanging tool for erection of a cable 110 such as a communication line or an electric wire on a utility pole P, and mainly includes an arm body 2, a refracting body (refracting portion) 3, and a mounting band ( Mounting means) 4 and. Here, as shown in FIG. 1, a case where the conventional arm 100 is already attached to the utility pole P will be mainly described. A cable 110 is erected on one end side of the arm metal body 101, and the arm metal body 100 is attached to the utility pole P by a mounting band 103 at the base end portion 102 on the other end side, and the arm metal body 101 is orthogonal to the utility pole P. And extends horizontally.

The arm body 2 is a rod-shaped member on which a cable 110 can be erected at least on one end side. Specifically, it is composed of a hollow rod having a square cross section, and a shaft hole is formed on the other end side from the front surface to the back surface, and a rotation shaft (horizontal shaft) 30 described later is inserted into this shaft hole. Further, a bolt insertion hole penetrating from the front surface to the back surface is formed on one end side (cable 110 side) of the shaft hole, and an adjustment bolt is inserted as described later.

Further, a predetermined number of erection tools 5 for erection of the cable 110 are arranged on the arm body 2. Here, in this embodiment, the case where one erection tool 5 is arranged only on one end side of the arm body 2 will be described, but it may be arranged also in the central portion of the arm body 2. good.

The structure of the erection tool 5 may be any as long as the cable 110 can be erected, but in this embodiment, as shown in FIG. 2, an L-shaped mounting member 51, a gripping member 54, and the like are provided. The L-shaped mounting member 51 has an L-shape, and its horizontal portion is fixed to the arm body 2 by the erection bolt 52 and the erection nut 53. The gripping member 54 includes a ring-shaped gripping portion 54a into which the cable 110 is inserted and gripped, and is fixed to a vertical portion of the L-shaped mounting member 51 by a gripping bolt 55 and a gripping nut 56.

Such an arm body 2 includes a refracting body 3, and the erection height of the cable 110 can be adjusted by rotating with the refracting body 3. In this embodiment, the refracting body 3 is an arm. It is provided on the other end side of the gold body 2. That is, the refracting body 3 is composed of two flat plates that sandwich the front surface and the back surface of the arm metal body 2, and a shaft hole is formed through the two flat plates, and the shaft hole and the shaft hole of the arm metal body 2 are formed. The rotating shaft 30 is inserted and mounted on top of each other.

Further, the two flat plates of the refracting body 3 are formed with three bolt insertion holes 31 to 33 on a shaft hole, that is, an arc centered on the rotating shaft 30. Then, the arm body 2 is rotated around the rotation shaft 30, and the adjustment bolt is inserted into one of the bolt insertion holes 31 to 33 and the bolt insertion hole of the arm body 2, and the nut is tightened to the adjustment bolt. .. As a result, the inclination angle of the arm body 2 is adjusted so that the erection height of the cable 110 can be adjusted.

Here, in this embodiment, when the adjusting bolt is inserted into the first bolt insertion hole 31 in the state of being attached to the utility pole P as described later, the arm body 2 is substantially orthogonal to the utility pole P. It extends substantially horizontally (in the state of the alternate long and short dash line in FIG. 1). Further, when the adjusting bolt is inserted into the third bolt insertion hole 33, the arm body 2 is arranged so as to stand up at the highest inclination angle. Further, when the adjusting bolt is inserted into the second bolt insertion hole 32, the arm body 2 is arranged so as to extend obliquely upward from the refracting body 3 at an inclination angle lower than the maximum inclination angle. The rotation range (rotation angle) at which the arm body 2 rotates in this way is such that by rotating the arm body 2 even in a limited mounting space, a predetermined separation / distance can be obtained between the cables 110. It is set so that it can be secured.

As described above, in this embodiment, the erection height of the cable 110 can be adjusted in three steps, but it may be adjustable steplessly. For example, an arc-shaped slit (long hole) centered on the rotation shaft 30 is formed in the two flat plates of the refracting body 3 instead of the bolt insertion holes 31 to 33. Then, by inserting an adjustment bolt into an arbitrary position of this slit and a bolt insertion hole of the arm metal body 2 and tightening a nut on the adjustment bolt, the arm metal body 2 is rotated by an arbitrary inclination angle. The erection height of the cable 110 may be arbitrarily adjusted.

Further, a screw hole / female screw may be formed in one flat plate of the refracting body 3 instead of the bolt insertion holes 31 to 33, and the adjusting bolt may be tightened. As a result, the nut can be eliminated to improve workability and safety, and the cost can be reduced.

The attachment band 4 is provided on the other end side of the arm body 2, and is a band for attaching the arm body 2 to the utility pole P. Specifically, in this embodiment, as shown in FIG. 1, the band is wound around the utility pole P and both ends are fixed to the flat plate of the refracting body 3 with fasteners (for example, bolts and nuts) 41. Then, the arm body 2 is attached to the utility pole P. Here, in this embodiment, only one mounting band 4 is provided, but a plurality of mounting bands 4 may be provided depending on the weight of the arm body 2 and the number of cables 110 erected.

According to the cable erection arm 1 having such a configuration, the erection height of the cable 110 can be adjusted by rotating the arm body 2 with the refracting body 3, so that even in a limited mounting space. , The cable 110 can be erected with a predetermined distance and distance from the adjacent cables 110. That is, in the conventional arm, as shown by the alternate long and short dash line in FIG. 1 and the existing arm 100, the arm extends horizontally at right angles to the utility pole P, so that the arm attachment interval D and the cable 110 interval D1 If the arm attachment interval D is not secured at a predetermined separation, the cable spacing D1 cannot secure a predetermined separation. On the other hand, according to the cable erection arm 1, even if the arm attachment interval D cannot secure a predetermined distance, the arm body 2 is rotated by the bending body 3 to rotate the cable 110. By adjusting the erection height of the cable 110, it is possible to secure the interval D2 of the cables 110 to be equal to or greater than a predetermined separation.

Moreover, since a predetermined separation can be secured only by rotating the arm body 2 with the refracting body 3 without moving the co-frame, the erection work can be performed easily and quickly, and the co-mount can be performed. It is possible to secure a predetermined distance even if there is no space for moving an object. Further, when a plurality of arms 1 for erection of the cable are arranged, one adjacent arm body 2 may be rotated or the other arm body 2 may be rotated depending on the erection state, the surrounding environment, and the like. By moving or rotating both arm body 2s, it is possible to more flexibly and surely secure a predetermined separation.

Further, in this embodiment, the refracting body 3 is provided on the other end side (electric pole P side) away from one end side of the arm body 2, and the arm body 2 rotates about the other end side. It is possible to greatly adjust one end side of the arm body 2, that is, the erection height of the cable 110. As a result, it is possible to flexibly and surely secure a predetermined separation according to the erection state and the surrounding environment.

(Embodiment 2)
FIG. 3 is a front view showing an arrangement state of the cable erection arm 11 according to this embodiment. This embodiment is different from the first embodiment in that the refracting body 3 is provided in the central portion between one end side and the other end side of the arm body 6, and is equivalent to the first embodiment. The description of the configuration will be omitted by assigning the same reference numerals.

That is, in this embodiment, the arm body 6 is composed of a first arm body 61 and a second arm body 62, and is formed on one end side (anti-electric column P side) of the first arm body 61. The other end side (anti-cable 110 side) of the second arm body 62 is connected by the bending body 3. Here, the two arm metal bodies 61 and 62 are formed of hollow rods having a square cross section as in the first embodiment, and the other end side of the first arm metal body 61 has a base end portion extending toward the utility pole P side. 61a is provided, and the first arm body 61 is attached to the utility pole P by the attachment band 4 at the base end portion 61a. In the state of being attached in this way, the first arm body 61 is arranged so as to extend substantially horizontally with respect to the utility pole P.

The refracting body 3 is fixed to one end side of the first arm body 61 with a fastener (for example, a bolt or a nut) 64. Further, the other end side of the second arm body 62 is connected to the refracting body 3, and the second arm body 62 can rotate around the rotation axis 30 of the refracting body 3 in the same manner as in the first embodiment. It has become. On the other hand, the cable 110 is erected on one end side of the second arm body 62 via the erection tool 5, and the second arm body 62 is rotated by the refracting body 3 to increase the erection height of the cable 110. It is adjustable.

According to such an embodiment, the refracting body 3 is provided in the central portion of the arm metal body 6, and the arm metal body 6 rotates (bends) in the central portion, so that it depends on the erection state, the surrounding environment, and the like. , It is possible to flexibly and surely secure a predetermined separation. For example, even if the arm body 6 cannot be bent at the other end because there is a co-frame around the utility pole P, the cable can be moved by bending the arm body 6 at the center and moving one end side up and down. It is possible to secure a predetermined distance between 110.

(Embodiment 3)
FIG. 4 is a front view showing an arrangement state of the cable erection arm 12 according to this embodiment. This embodiment is different from the first and second embodiments in that a plurality of refracting bodies 3 are provided on the arm body 6, and the same reference numerals are given for the same configurations as those of the first and second embodiments. The explanation will be omitted by adding.

In this embodiment, the refracting body 3 is provided on the other end side and the central portion of the arm body 6. That is, as in the second embodiment, the arm body 6 is composed of the first arm body 61 and the second arm body 62, and one end side of the first arm body 61 (anti-electric column P side). ) and the other end of the second cross-arm body 62 and (anti cable 110 side) is connected with the second refractor 3 _2. Furthermore, the other end of the first arm-body 61 is connected to a first refractor 3 _1, as in the first embodiment, the first refractor 3 ₁ is mounted on a utility pole P in mounting band 4 There is.

Thus, the first cross-arm body 61 is rotatable in a first refractor 3 ₁ of the rotary shaft 30 around, further, the second cross-arm body 62 of the second refractor 3 _rotation shaft 30 It can rotate around. That is, the arm body 6 rotates (bends) with respect to the utility pole P side as a base point, and also rotates at the central portion.

According to such an embodiment, since a plurality of refracting bodies 3 are provided and the arm body 6 is bent at a plurality of locations, a predetermined separation is flexibly and surely secured according to the erection state, the surrounding environment, and the like. It becomes possible. For example, it is possible to secure a predetermined separation by moving one end side, that is, the cable 110 up and down while bending the arm body 6 at a plurality of places so as to avoid a common frame.

(Embodiment 4)
FIG. 5 is a front view showing an arrangement state of the cable erection arm 13 according to this embodiment. In this embodiment, the configuration is different from that of the first embodiment in that the arm body 2 is expandable and contractible, and the description of the same configuration as that of the first embodiment is omitted by assigning the same reference numerals. do.

In this embodiment, the arm body 2 is composed of the first arm body 21 and the second arm body 22, and the other end side (anti-cable 110 side) of the second arm body 22 is the second. It is inserted into one end side (anti-electric pole P side) of the arm body 21 of No. 1 and can be freely taken in and out. Further, an elongated hole 22a that penetrates from the front surface to the back surface and extends in the longitudinal direction is formed on the other end side of the second arm metal body 22, and an elongated hole 22a is formed on one end side of the first arm metal body 21. A fixing bolt 23 that penetrates is attached. Then, by adjusting the amount of protrusion of the second arm body 22 from the first arm body 21 and tightening the nut to the fixing bolt 23, the length of the arm body 2 can be adjusted (expandable). It has become.

According to such an embodiment, since the arm body 2 can be expanded and contracted, it is possible to flexibly and surely secure a predetermined separation according to the erection state, the surrounding environment, and the like. That is, it is possible to secure a predetermined separation by rotating the arm body 2 with the refracting body 3 and extending or contracting it according to the erection position of the other cable 110 or the like.

Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like within a range that does not deviate from the gist of the present invention. Included in the invention. For example, in the above-described first to fourth embodiments, the arm metal bodies 2 and 6 are rotated around the rotation shaft 30 of the refracting body 3, but the arm metal bodies 2 and 6 are rotated via gears. It may be. Further, in the third embodiment described above, the case where the two refracting bodies 3 are provided on the arm metal body 6 has been described, but three or more refracting bodies 3 may be provided on the arm metal body 6. Further, in the above-described first to fourth embodiments, the case where the arm metal bodies 2 and 6 are inclined upward from the refracting body 3 is illustrated, but the arm metal bodies 2 and 6 are inclined downward or vertically. It may be something to do.

1, 11, 12, 13 Cable erection arm 2 Arm body 21 First arm body 22 Second arm body 3 Refractive body (refractive part)
30 Rotating shaft 4 Mounting band (Mounting means)
5 Elevator 6 Arm body 61 First arm body 62 Second arm body 110 Cable P Utility pole

Claims (5)

A rod-shaped arm body that allows the cable to be erected on at least one end side,
A mounting means provided on the other end side of the arm body and for attaching the arm body to a utility pole is provided.
The arm body is provided with a refracting portion, and the erection height of the cable can be adjusted by rotating at the refracting portion.
A cable erection arm that is characterized by this. The refracting portion is provided on the other end side of the arm body.
The arm for erection of a cable according to claim 1. The refracting portion is provided in the central portion between one end side and the other end side of the arm metal body.
The arm for erection of a cable according to claim 1. A plurality of the refracting portions are provided.
The arm for erection of a cable according to claim 1. The arm body is stretchable,
The cable erection arm according to any one of claims 1 to 4, characterized in that.

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