JP6856896B2 - Branch line tension regulator - Google Patents

Description

The present invention relates to a branch line tension regulator that connects a utility pole and a branch line.

Branch lines are attached to utility poles installed on slopes or in places where the ground is unstable to prevent the utility poles from tipping over. One end of the branch line is connected to a utility pole and the other end is connected to an anchor fixed to the ground.

Since the branch line is installed outdoors, the tension of the branch line may increase due to the influence of snow and the like. For example, in mountainous areas with heavy snowfall, branch lines are filled with snow. In this case, pressure (hereinafter referred to as snow movement pressure) is applied to the branch line as the snow slides on the inclined surface. As a result, the tension of the branch line increases. When the tension of the branch line becomes excessively large, the force applied to the utility pole becomes excessively large, and the utility pole is cracked or broken. In order to prevent such a situation, it is known to provide a branch line tension regulator at a portion connecting the branch line and the utility pole.

The branch line tension regulator is disclosed, for example, in Japanese Patent Application Laid-Open No. 3-14539 (Patent Document 1) and Japanese Patent No. 2867115 (Patent Document 2).

The branch line tension regulator described in Patent Document 1 includes a tension coil spring attached to two pairs of slidable holding plates and a slide member including a warning display unit. As the tension of the branch line increases, the tension coil spring begins to stretch and the distance between the two pairs of holding plates increases. It is described in Patent Document 1 that when the distance between the two pairs of pressing plates becomes equal to or greater than a predetermined value, a warning display portion of the slide member appears, indicating a dangerous state of tension of the branch line.

The branch line tension regulator described in Patent Document 2 includes a case, a compression coil spring housed in the case, and a pressure adjusting nut. The branch line tension regulator of Patent Document 2 is attached to a utility pole in a state where the compression coil spring is compressed by the pressure adjusting nut. When an external force is applied to this branch tension regulator, the compression coil spring is compressed while gradually increasing the repulsive force when there is a contraction margin of the compression coil spring, and after the compression coil spring is fully contracted, a single rigid body. Functions as. It is described in Patent Document 2 that this makes it possible to prevent disconnection of branch lines, tipping of utility poles, and the like.

Jitsufuku No. 3-14539 Japanese Patent No. 2867115

In the branch line tension regulator of Patent Document 1, when the branch line tension regulator is attached, it is necessary to extend the tension coil spring to a predetermined length in order to apply an appropriate tension to the branch line. However, in the branch line tension regulator of Patent Document 1, the tension coil spring has a natural length in a state before the branch line tension regulator is attached to the utility pole (hereinafter, also referred to as an initial state). Therefore, the length of the branch line that the worker on the ground must pull before the proper tension is applied to the branch line is long. Therefore, it is difficult to apply an appropriate tension to the branch line. Further, when the branch line tension adjuster of Patent Document 1 is attached to a utility pole and a branch line, if an operator tries to apply an appropriate tension to the branch line, does the operator adjust the length of the branch line while pulling the branch line and fix it to the anchor? , The anchor must be fixed farther from the utility pole and tension must be applied to the branch line. Such construction work requires a great deal of labor in places where the ground is unstable, slopes, and the like. Further, in the initial state of the branch line tension regulator of Patent Document 1, since the tension coil spring has a natural length, it easily comes off from the branch line tension regulator. Therefore, it is difficult to carry the branch line tension regulator.

The branch line tension regulator of Patent Document 2 includes a compression coil spring housed in a case. Therefore, when assembling the branch tension regulator, it is necessary to compress a compression coil spring having a very long natural length and store it in the case, resulting in low assembleability. Further, since the compression coil spring is housed in the case, the state of the compression coil spring cannot be confirmed from the outside.

An object of the present invention is to provide a branch line tension regulator capable of easily applying an appropriate tension to a branch line while maintaining basic performance.

The branch line tension regulator of this embodiment connects a utility pole and a branch line. The branch line tension regulator includes a first member, a second member, a tension coil spring, and a slide limiting mechanism. The first member can be connected to one of a branch line and a utility pole. The second member can be connected to the other of the branch line and the utility pole, and slidably supports the first member in the longitudinal direction. The tension coil spring is hooked on the first member and the second member in a state of being extended beyond the natural length. The slide limiting mechanism limits the sliding of the first member with respect to the second member so that the tension coil spring does not contract from the state of being extended beyond its natural length.

The branch line tension regulator according to the present invention can easily apply an appropriate tension to the branch line and can prevent the tension of the branch line from becoming excessively large.

FIG. 1 is a schematic view showing a utility pole to which a branch line tension regulator is attached. FIG. 2 is a perspective view showing the branch line tension adjuster of the present embodiment. FIG. 3 is a front view showing a branch line tension regulator. FIG. 4 is a plan view showing a branch line tension regulator. FIG. 5 is a perspective view showing a branch line tension regulator. FIG. 6 is an exploded view of the branch line tension regulator. FIG. 7 is a front view showing the slide limiting mechanism in the initial state. FIG. 8 is a front view showing the slide limiting mechanism after construction. FIG. 9 is a front view showing a state in which the branch line tension regulator is extended from the state shown in FIG. FIG. 10 is a front view showing another embodiment of the slide limiting mechanism. FIG. 11 is a plan view showing another embodiment of the slide limiting mechanism.

The branch line tension regulator of this embodiment connects a utility pole and a branch line. The branch line tension regulator includes a first member, a second member, a tension coil spring, and a slide limiting mechanism. The first member can be connected to one of a branch line and a utility pole. The second member can be connected to the other of the branch line and the utility pole, and slidably supports the first member in the longitudinal direction. The tension coil spring is hooked on the first member and the second member in a state of being extended beyond the natural length. The slide limiting mechanism limits the sliding of the first member with respect to the second member so that the tension coil spring does not contract from the state of being extended beyond its natural length.

In the branch line tension regulator of the present embodiment, the tension coil spring is in a state of being stretched to a predetermined length in advance. That is, the tension coil spring has a predetermined restoring force in advance. Therefore, when attaching the branch line, it is possible to apply an appropriate tension to the branch line simply by pulling the branch line by a slight length from the state where the branch line is not bent (tension is 0). Therefore, the length of the branch line that the operator must pull before the proper tension is applied to the branch line can be shortened, and the workability is good. Therefore, an appropriate tension can be easily applied to the branch line, and the spring constant of the tension coil spring can be small. Therefore, even if the branch line is bent due to the snow movement pressure, the force applied to the utility pole does not suddenly increase. .. Further, since the tension coil spring is in a state of being stretched to an appropriate length in advance, the tension coil spring has a restoring force, the tension coil spring is hard to come off from the branch line tension adjuster, and the branch line tension adjuster can be easily transported.

In the above branch tension regulator, it is preferable that the second member includes a tubular portion along the longitudinal direction, and the first member includes a rod portion slidably inserted into the tubular portion. Further, it is preferable that the tubular portion has a square tubular shape and the rod portion has a plate shape.

According to such a configuration, the second member can slidably support the first member with a simple configuration.

In the above-mentioned branch line tension adjuster, the slide limiting mechanism includes a long hole provided in the rod portion along the longitudinal direction, two plate portions protruding from the end portion of the cylinder portion so as to sandwich the rod portion, and two plate portions. It is preferable to include a shaft portion fixed to the plate portion and penetrating the elongated hole. Further, it is preferable that the two plate portions are detachably attached to the tubular portion.

According to such a configuration, since the two plate portions are detachable, a plate portion having an appropriate length can be appropriately selected and attached to the cylinder portion. Therefore, it is easy to adjust the length of the tension coil spring.

The branch line tension regulator preferably includes a display mechanism for displaying the slide amount of the second member with respect to the first member.

Since the slide amount of the second member with respect to the first member corresponds to the restoring force of the tension coil spring, according to such a configuration, the tension coil spring is attached with a predetermined restoring force when assembling the branch line tension regulator. You can check if it is. It is also possible to check the tension applied to the branch line after construction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

FIG. 1 is a schematic view showing a utility pole to which a branch line tension regulator is attached. With reference to FIG. 1, the branch line tension regulator 1 connects the branch line 2 and the utility pole 3. Since the electric wire 4 is attached to the utility pole 3, the tension of the electric wire 4 is applied to the utility pole 3. A branch line 2 is attached in order to balance the tension of the electric wire 4. Further, a branch line 2 is attached in order to prevent the utility pole 3 installed on a slope or a place where the ground is unstable from tipping over. Therefore, the branch line 2 is attached to the utility pole 3 with a certain amount of tension applied.

In a mountainous area with a large amount of snowfall, one end of the branch line 2 is fixed to the ground 5, so that the branch line 2 is buried in the snow cover 6. When the snow cover 6 on a slope or the like moves due to its weight (see the arrow in FIG. 1), the branch line 2 bends, the tension coil spring is stretched, and the restoring force of the tension coil spring increases. Therefore, the tension of the branch line 2 becomes large. If the tension of the branch line 2 becomes excessively large, the force applied to the utility pole 3 becomes large, and the utility pole 3 may be cracked or broken. Therefore, it is desirable to apply a certain amount of tension to the branch line 2 in order to prevent the utility pole 3 from tipping over, but it is desirable that the tension of the branch line 2 does not become excessively large in order to suppress cracks in the utility pole. When the snow movement pressure loaded on the utility pole 3 reaches about 5000 N, the utility pole 3 cracks or breaks.

The branch line tension regulator 1 of the present embodiment can prevent the force applied to the utility pole 3 from becoming excessively large, and can easily apply an appropriate tension to the branch line 2. Hereinafter, the branch line tension regulator 1 of the present embodiment will be described in detail.

FIG. 2 is a perspective view showing the branch line tension adjuster of the present embodiment. With reference to FIG. 2, the branch line tension regulator 1 includes a first member 7, a second member 8, a tension coil spring 9, and a slide limiting mechanism 10. FIG. 2 shows a case where the first member 7 is connected to the utility pole 3 and the second member 8 is connected to the branch line 2 as an example.

FIG. 3 is a front view showing a branch line tension regulator. FIG. 4 is a plan view showing a branch line tension regulator. FIG. 5 is a perspective view showing a branch line tension regulator. FIG. 6 is an exploded view of the branch line tension regulator. In FIGS. 3 to 6, the tension coil spring is not shown. The configuration of the branch line tension regulator 1 will be described with reference to FIGS. 3 to 6.

[First member]
The first member 7 can be connected to the utility pole 3. The first member 7 includes a plate-shaped rod portion 11 and a first connecting portion 14. As will be described later, the rod portion 11 is provided with an elongated hole 12 included in the slide limiting mechanism 10. The rod portion 11 is fixed to the first connecting portion 14. The first connecting portion 14 includes a first mounting portion 15 to which the utility pole 3 is mounted and a first hooking portion 16 to which the tension coil spring 9 is hooked.

[Second member]
The second member 8 can be connected to the branch line 2. The second member 8 includes a square tubular tubular portion 13 and a second connecting portion 17. The tubular portion 13 slidably accommodates the rod portion 11 along the longitudinal direction. As a result, the second member 8 can slidably support the first member 7. The tubular portion 13 is fixed to the second connecting portion 17. The second connecting portion 17 includes a second mounting portion 18 attached to the branch line 2 and a second hooking portion 19 on which the tension coil spring 9 is hooked.

[Tension coil spring]
In the initial state, the tension coil spring 9 is hooked on the first member 7 and the second member 8 in a state of being extended beyond the natural length. Therefore, the tension coil spring 9 has a restoring force corresponding to the extension of the natural length, and the force is applied in the direction in which both the first member 7 and the second member 8 approach each other. The elongation of the tension coil spring 9 is appropriately set according to the tension applied to the branch line 2. As will be described later, when the branch line tension adjuster 1 is attached to the utility pole, the branch line tension adjuster 1 is slightly extended from the initial state in order to pull the branch line 2. The restoring force of the tension coil spring 9 at this time corresponds to the tension of the branch line 2. Therefore, the elongation of the tension coil spring 9 in the initial state is set according to the tension applied to the branch line 2.

Preferably, the elongation of the tension coil spring 9 in the initial state is set to have a restoring force slightly lower than the tension applied to the branch line 2. As described above, when the branch line tension regulator 1 is attached to the utility pole, the branch line tension regulator 1 is slightly stretched. Therefore, in the initial state, if the extension of the tension coil spring 9 is set by subtracting the amount of extension at the time of attachment, a predetermined tension acts on the branch line 2 when it is attached to the utility pole.

A first member 7 and a second member 8 are passed through the inside of the coil of the tension coil spring 9. With such a configuration, the state of the tension coil spring 9 can be visually confirmed. Therefore, corrosion of the tension coil spring 9, contamination of foreign matter, and the like can be visually confirmed.

[Slide restriction mechanism]
The slide limiting mechanism 10 includes an elongated hole 12, two plate portions 20, and a shaft portion 21. The elongated hole 12 is provided in the rod portion 11 along the longitudinal direction. The two plate portions 20 project from the end portion of the tubular portion 13 so as to sandwich the rod portion 11. The shaft portion 21 is fixed to the two plate portions 20 and penetrates the elongated hole 12. Subsequently, the operation of the slide limiting mechanism 10 will be described.

FIG. 7 is a front view showing the slide limiting mechanism in the initial state. FIG. 8 is a front view showing the slide limiting mechanism after construction. FIG. 9 is a front view showing a state in which the branch line tension regulator is extended from the state shown in FIG. In FIGS. 7 to 9, the tension coil spring is not shown.

[Slide restriction mechanism in the initial state]
With reference to FIG. 7, before the branch line tension regulator 1 is attached to the utility pole, the restoring force of the tension coil spring 9 causes the first member 7 and the second member 8 to receive a force in a direction approaching each other. Therefore, the rod portion 11 slides in the direction of being inserted into the cylinder portion 13. However, since the shaft portion 21 penetrates the elongated hole 12, when the shaft portion 21 reaches the end portion of the elongated hole 12 by the slide of the rod portion 11, the slide portion 21 slides in the direction of being inserted into the tubular portion 13 of the rod portion 11. Is restricted. That is, the slide of the first member 7 with respect to the second member 8 is restricted. As a result, in the initial state, the tension coil spring 9 is maintained in a state of being extended beyond its natural length.

[Slide restriction mechanism after construction]
With reference to FIG. 8, after the branch line tension regulator 1 is connected to the utility pole and the branch line, a ground worker pulls the branch line 2 in order to apply an appropriate tension to the branch line 2. As a result, the first member 7 and the second member 8 receive a force in a direction away from each other. Then, when the shaft portion 21 is slightly separated from the end portion of the elongated hole 12, the restriction on the slide of the first member 7 with respect to the second member 8 is released. As a result, the restoring force of the tension coil spring 9 is applied to the branch line 2, and an appropriate tension is applied to the branch line 2.

[Slide limiting mechanism when snow cover pressure, etc. is applied]
With reference to FIG. 9, when the branch line 2 receives the snow movement pressure, the first member 7 and the second member 8 receive a force in a direction away from each other. As described above, since the sliding of the first member 7 with respect to the second member 8 is not restricted after the construction, the first member 7 slides in a direction further away from the second member 8. As a result, even if the branch line 2 receives the snow movement pressure or the like, the branch line tension regulator 1 can apply tension to the branch line 2.

The position of the shaft portion 21 is not particularly limited, and the position of the shaft portion 21 may be appropriately determined so that the tension coil spring 9 is extended beyond its natural length in the initial state. For example, by adjusting the position where the shaft portion 21 is fixed, the length of the tension coil spring 9 in the initial state can be adjusted. Further, the length of the tension coil spring 9 in the initial state can be adjusted by adjusting the length of the elongated hole 12 in the longitudinal direction. Further, when the shaft portion 21 is fixed to the two plate portions 20, the length of the tension coil spring 9 in the initial state of the branch line tension adjuster 1 can be adjusted by adjusting the length of the plate portions 20 in the longitudinal direction. it can.

With reference to FIG. 6, the two plate portions 20 are detachably attached to the tubular portion 13. Specifically, the two plate portions 20 are attached to the cylinder portion 13 by bolts 25. In this case, plate portions 20 having different lengths can be appropriately selected and attached to the tubular portion 13. Therefore, it is easy to adjust the length of the tension coil spring 9.

As described above, in the branch line tension regulator 1 of the present embodiment, the tension coil spring 9 is in a state of being longer than the natural length in the initial state. The situation when this branch line tension regulator 1 is installed on a utility pole will be described.

[Mounting on utility poles]
With reference to FIG. 1, when the branch line 2 and the utility pole 3 are connected by the branch line tension regulator 1, a predetermined tension is applied to the branch line 2 in order to prevent the utility pole 3 from tipping over. At this time, a worker on the ground adjusts the length by pulling the branch line 2 and fixes the branch line 2 to the anchor 26. As a result, tension is applied to the branch line 2.

When the tension coil spring of the branch line tension regulator has a natural length, the restoring force of the tension coil spring is 0 in the initial state, so the tension coil spring must be extended until an appropriate tension is applied to the branch line 2. That is, the length of the branch line 2 that the operator must pull before the proper tension is applied to the branch line 2 is long. Therefore, the workability when attaching the branch line 2 is low. In order to eliminate this inconvenience, it is conceivable to increase the spring constant of the tension coil spring 9.

When the spring constant of the tension coil spring 9 is large, the length of the branch line 2 that must be pulled before an appropriate tension is applied to the branch line 2 can be shortened. However, if the spring constant of the tension coil spring 9 is large, the force applied to the utility pole 3 suddenly increases when the branch line 2 is bent due to the snow movement pressure. Therefore, a tension coil spring having an excessively large spring constant is used. Is not preferable.

On the other hand, in the branch line tension regulator 1 of the present embodiment, the tension coil spring 9 is in a state of being stretched to a predetermined length in advance. That is, the tension coil spring 9 has a predetermined restoring force in advance. Therefore, when the branch line 2 is attached, an appropriate tension can be applied to the branch line 2 by simply pulling the branch line 2 by a slight length from the state where the branch line 2 is not bent (tension is 0). Therefore, the length of the branch line 2 that the operator must pull before the proper tension is applied to the branch line 2 is short, and the workability is good. Therefore, an appropriate tension can be easily applied to the branch line without increasing the spring constant of the tension coil spring 9, and the spring constant of the tension coil spring 9 can be small. Even if it bends, the force that is suddenly applied to the utility pole does not increase. Further, since the tension coil spring 9 is in a state of being stretched to an appropriate length in advance, the tension coil spring 9 has a restoring force, the tension coil spring 9 is hard to come off from the branch line tension adjuster 1, and the branch line tension adjuster 1 is transported. Is easy.

[Display mechanism]
With reference to FIG. 3, the branch line tension regulator 1 may include a display mechanism 22 for displaying the slide amount of the second member 8 with respect to the first member 7. The display mechanism 22 is, for example, a plate-shaped rod. The display mechanism 22 is fixed to the second member 8. More specifically, the display mechanism 22 may be fixed to the tubular portion 13 or may be attached to the plate portion 20.

The display mechanism 22 includes a scale 23. The scale 23 is a scale along the slide direction of the first member 7 and the second member 8. Therefore, the scale 23 indicates the position of the first member 7 with respect to the second member 8. Since the tension coil spring 9 is hooked on the first member 7 and the second member 8, the scale 23 corresponds to indicating the restoring force of the tension coil spring 9. Thereby, when assembling the branch line tension regulator 1, it can be confirmed whether the tension coil spring 9 is attached with a predetermined restoring force. Further, in a state where the branch line tension regulator 1 is attached to a utility pole and extended from the initial state, the restoring force of the tension coil spring 9 corresponds to the tension of the branch line 2. Therefore, it is possible to confirm the tension applied to the branch line 2 after construction.

[Assembly of branch line tension regulator]
The assembly of the branch line tension regulator 1 will be briefly described. The branch line tension regulator 1 is assembled using a jig. First, other parts except the tension coil spring 9 and the shaft portion 21 are assembled. Next, the natural length tension coil spring 9 is hooked on the first member 7 and the second member 8. Then, one of the first member 7 and the second member 8 is fixed, and the other is attached to the jig. The jig includes, for example, a hydraulic cylinder, a pneumatic cylinder, and the like. This jig is moved in the sliding direction of the first member 7 and the second member 8, and the branch line tension adjuster 1 is extended to a predetermined length. When the branch line tension adjuster 1 includes the display mechanism 22, the predetermined length can be confirmed by checking the scale 23 of the display mechanism 22. Finally, after the branch line tension regulator 1 is extended to a predetermined length, the shaft portion 21 is passed through the elongated hole 12 and fixed.

[Other embodiments of the slide limiting mechanism]
In the above-described embodiment, the case where the slide limiting mechanism 10 includes the elongated hole 12, the two plate portions 20, and the shaft portion 21 has been described. However, the configuration of the slide limiting mechanism 10 is not limited to this case.

FIG. 10 is a front view showing another embodiment of the slide limiting mechanism. The slide limiting mechanism 10 shown in FIG. 10 is different from the slide limiting mechanism of the above-described embodiment in that it does not include the two plate portions 20. In the case shown in FIG. 10, the shaft portion 21 is fixed to the tubular portion 13 and penetrates the elongated hole 12 of the rod portion 11. Even in this case, the sliding of the first member 7 with respect to the second member 8 can be restricted by the shaft portion 21 and the elongated hole 12.

FIG. 11 is a plan view showing another embodiment of the slide limiting mechanism. The slide limiting mechanism 10 shown in FIG. 11 is different from the slide limiting mechanism of the above-described embodiment in that the shaft portion 21 and the elongated hole 12 are not included. The slide limiting mechanism 10 shown in FIG. 11 includes a stopper portion 24 provided at each of the end portions of the two plate portions 20 and the end portions of the first connecting portion 14 of the first member 7. By hitting the stopper portions 24 with each other, the slide of the first member 7 with respect to the second member 8 can be restricted. The stopper portion 24 may be provided at the end portion of the tubular portion 13 or may be provided at the rod portion 11.

In short, the slide limiting mechanism 10 may be configured to limit the slide of the first member 7 with respect to the second member 8, and the configuration is not particularly limited.

The embodiments of the present invention have been described above. However, the embodiments described above are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and the above-described embodiment can be appropriately modified and implemented within a range that does not deviate from the gist thereof.

In the above description, the case where the second member 8 includes the tubular portion 13 has been described. However, the second member 8 does not have to include the tubular portion 13. The second member 8 may include a rail-shaped component that makes the first member 7 slidable, and its configuration is not particularly limited.

In the above description, the case where the first member 7 includes the rod portion 11 has been described. However, the first member 7 does not have to include the rod portion 11. The first member 7 may be slidably inserted into the second member 8, and its configuration is not particularly limited.

In the above description, the case where the tubular portion 13 has a square tubular shape and the rod portion 11 has a plate shape has been described. However, the shape of the tubular portion 13 and the shape of the rod portion 11 are not limited to this case. The shape of the tubular portion 13 may be a tubular portion having a circular, elliptical, or polygonal cross section.

In the above description, the case where the two plate portions 20 are fixed to the cylinder portion 13 has been described, but the two plate portions 20 may be integrated with the cylinder portion 13 or may be detachably attached. Good.

In the above description, the case where the slide limiting mechanism 10 includes two plate portions 20 has been described. However, the configuration of the slide limiting mechanism 10 is not limited to this case. The slide limiting mechanism 10 may include one plate portion. In this case, the shaft portion 21 is fixed to one plate portion.

The materials of the first member 7, the second member 8, and the slide limiting mechanism 10 are not particularly limited. The materials of the first member 7, the second member 8, and the slide limiting mechanism 10 are, for example, steel, resin, and the like. However, since the branch line tension regulator 1 is installed outdoors, the materials of the first member 7, the second member 8, and the slide limiting mechanism 10 are preferably steel having corrosion resistance.

In the present specification, the "initial state" means a state in which the branch line tension regulator is stretched by applying tension from its natural length before being attached to the branch line. That is, the initial state corresponds to the state before the branch line tension regulator is attached to the utility pole.

In the above description, the case where the first member 7 is connected to the utility pole 3 and the second member 8 is connected to the branch line 2 has been described. However, the connection between the branch line 2 and the utility pole 3 is not limited to this case. The first member 7 may be connected to the branch line 2 and the second member 8 may be connected to the utility pole 3.

1: Branch line tension regulator 2: Branch line 3: Electric pole 4: Electric wire 5: Ground 6: Snow cover 7: First member 8: Second member 9: Tension coil spring 10: Slide limiting mechanism 11: Rod part 12: Long hole 13 : Cylinder 14: 1st connecting part 15: 1st mounting part 16: 1st hooking part 17: 2nd connecting part 18: 2nd mounting part 19: 2nd hooking part 20: Plate part 21: Shaft part 22: Display Mechanism 23: Scale 24: Stopper 25: Bolt 26: Anchor

Claims (5)

A branch line tension regulator that connects utility poles and branch lines.
A first member that can be connected to one of the branch line and the utility pole,
A second member that is connectable to the other of the branch line and the utility pole and that slidably supports the first member in the longitudinal direction.
A tension coil spring hooked on the first member and the second member in a state of being extended beyond the natural length,
A slide limiting mechanism for restricting the slide of the first member with respect to the second member is provided so that the tension coil spring does not contract from a state of being extended beyond its natural length .
The second member includes a tubular portion along the longitudinal direction.
The first member is a branch line tension regulator including a rod portion slidably inserted into the tubular portion. The branch tension regulator according to claim 1.
A branch line tension regulator in which the tubular portion has a square tubular shape and the rod portion has a plate shape. The branch tension regulator according to claim 2.
The slide limiting mechanism is
An elongated hole provided in the rod portion along the longitudinal direction,
Two plate portions protruding from the end portion of the cylinder portion so as to sandwich the rod portion, and
A branch line tension regulator including a shaft portion fixed to the two plate portions and penetrating the elongated hole. The branch tension regulator according to claim 3.
A branch line tension adjuster in which the two plate portions are detachably attached to the cylinder portion. The branch tension regulator according to any one of claims 1 to 4.
A branch line tension adjuster including a display mechanism for displaying the slide amount of the second member with respect to the first member.

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