JP2019126135A - Thimble and electric wire supporting method using the thimble - Google Patents

Abstract

To provide a thimble for making a contribution to the increase of tension of an electric wire, and an electric wire supporting method using the thimble.SOLUTION: A thimble 100 for pulling a grip 600 attached to an electric wire W, is characterized by including a grip attachment part 110 to which a portion of the grip 600 is attached, a coupling tool attachment part 120 to which a coupling tool C for coupling the thimble 100 to a structure Y is attached, and a pair of holding tool attachment parts 130 to which a holding tool 400 for holding the electric wire W is attached when the grip 600 is attached to the electric wire W.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a thimble used when pulling a branch such as a wire.

  2. Description of the Related Art Conventionally, a branch such as a wire is supported by a structure such as a utility pole through a connector such as a ladder in a state of being pulled so as to satisfy a prescribed wire tension. At that time, a thimble that is attached between the connector and the grip that holds the electric wire to pull the grip has been used. Although various types of thimbles are known (for example, utility model registration 3176565 is known), basically, a grip attachment portion for attaching a part of the grip and a connector And an attaching part for attaching a connector.

  Now, the usage of the thimble will be described with reference to FIG. First, as shown in FIG. 6A, the electric wire W is pulled toward the structure Y such as a power pole by the holder 300 and held. The holder 300 includes a fixing wire 310 fixed by being wound around a structure Y, a holding portion (camler) 320 for holding the electric wire W, a pulling wire 330 for connecting the fixing wire 310 and the holding portion 320, and a pulling wire And a winding unit (Similar) 340 for winding 330. Then, an operator who climbs up to the structure Y attaches the grip portion 320 to the electric wire W within a reachable range, and drives the winding portion 340 to wind the pulling wire 330 in that state. The electric wire W is strongly drawn toward the structure Y and held.

  Next, FIG. 6 (b) shows an overall perspective view of a conventional thimble 500. FIG. The thimble 500 includes a grip attachment portion 510 formed of a substantially U-shaped groove, and a pin-shaped attachment portion 520 which is inserted into and fixed to an annular portion R at the end of a connector C such as a forceps. And Further, FIG. 7A shows an overall plan view of the grip 600. FIG. The grip 600 is conventionally used (for example, Japanese Patent Application No. 2015-120053 is known), and a substantially U-shaped end portion 610 and two spirals extending from the end portion 610 And a tip 620 formed on the

  Then, as shown in FIG. 7B, the end portion 610 of the grip 600 is attached to the grip attachment portion 510 of the thimble 500 so as to be wound, and in this state, the two spiral tip portions 620 are Winding alternately. Thereafter, when the holder 300 is removed, the thimble 500 pulls the grip 600 attached to the wire W, and the state of supporting the wire W is completed.

  However, during the work of supporting the electric wire W, the reach of the operator is limited, and the attachment position of the grip portion 320 is close to the structure Y, so the pulling wire 330 is pulled by the winding portion 340. However, there is a limit to the amount of wire W which can be withdrawn, and the wire tension may not reach the specified value. Further, when the tension wire 330 is further wound and the wire W is strongly pulled in order to obtain a prescribed wire tension, the grip portion 320 is further attracted to the structure Y as shown in FIG. In some cases, the space can not be secured for winding the tip end 620 of the grip 600 around the electric wire W.

Utility model registration number 3176565

  Therefore, in view of the above problems, the present invention provides a thimble that contributes to an increase in wire tension, and a wire support method using the thimble.

  In order to solve the above problems, a thimble according to the present invention is a thimble for pulling a grip attached to an electric wire, and a grip attaching portion for attaching a part of the grip, and for connecting the thimble to a structure A connector attachment portion for attaching a connector, and a pair of holder attachment portions for attaching a holder for temporarily holding the electric wire when attaching the grip to the electric wire. Do.

  According to the above feature, since the pair of holder mounting portions are provided, two holders can be mounted on each of the holder mounting portions to draw in the electric wire. And by using two holding fixtures, the amount of drawing in an electric wire increases and electric wire tension can be increased more compared with the past. Therefore, the thimble of the present invention contributes to the increase of the wire tension.

  Furthermore, according to the thimble of the present invention, the thimble is provided with both the holder mounting portion for mounting the holder and the grip mounting portion for mounting the grip. Therefore, as compared with the prior art, the difference between the tension direction of the holder temporarily holding the wire and the tension direction of the grip supporting the wire is small, and the wire tension can be further increased.

  Furthermore, the thimble of the present invention is characterized in that the pair of holder attachment portions are disposed on both sides of the grip attachment portion.

  According to the above feature, the position of the electric wire pulled in a balanced manner from both sides by the two holders attached to the holder attachment part and the position of the grip attachment part of the thimble become close, and the positions of both are shifted By reducing this, the bending of the wire after removing the holder can be suppressed, and the wire tension can be further increased. In addition, since there is little deviation between the position of the grip attachment portion and the position of the wire, the grip attached to the grip attachment portion can be easily attached to the wire. Furthermore, since the pair of holder mounting portions are disposed on both sides of the grip mounting portion, the holders mounted on the respective holder mounting portions are less likely to interfere with each other, and the work can be performed easily.

  Furthermore, in the thimble of the present invention, the grip attachment portion includes a penetrating portion for attaching a part of the grip, and the pair of holder attaching portions are substantially perpendicular to the penetrating axis of the penetrating portion. It is characterized in that it is arranged in the direction.

  According to the above-mentioned feature, the bending of the electric wire at the time of attaching work of the grip and the like can be suppressed, and the electric wire tension can be further increased.

  Furthermore, the supporting method of the present invention is the supporting method of the electric wire using the thimble of the present invention, and the first holding member for holding the electric wire is attached to the one holding portion for the holding member, and the other holding member A second holder for holding the wire is attached to the mounting portion, and the wire is directed to the structure by alternately pulling the wire using the first holder and the second holder Pulling the wire, and then attaching the grip to the pulled wire.

  According to the above feature, the electric wire is alternately drawn toward the thimble by using the holder attached to one of the holder attachment parts and the second holder attached to the other attachment part. By pulling the wire, the wire can be pulled more strongly to increase the wire tension as compared with the conventional case.

  The thimble of the present invention and the method of supporting a wire using the thimble contribute to an increase in wire tension.

(A) is a plan view of the thimble of the present invention, (b) is a side view of the thimble, (c) is a front view of the thimble, and (d) is a rear view of the thimble. It is a side view which shows a mode that an electric wire is supported at high places of structures, such as a telephone pole, via connectors, such as a ladder. It is a side view which shows a mode that an electric wire is supported at high places of structures, such as a telephone pole, via connectors, such as a ladder. It is a side view which shows a mode that an electric wire is supported at high places of structures, such as a telephone pole, via connectors, such as a ladder. It is a side view which shows a mode that an electric wire is supported at high places of structures, such as a telephone pole, via connectors, such as a ladder. The prior art in this invention is shown, (a) is a side view which shows a mode that an electric wire is supported at high places of structures, such as a telephone pole, via connectors, such as a insulator, (b) is a perspective view of a thimble is there. The prior art in this invention is shown, (a) is a top view of a grip, (b) is a side view which shows a mode that an electric wire is supported in high places of structures, such as a power pole, via connectors, such as a ladder. is there.

100 Thimble 110 grip mounting portion 120 connector mounting portion 130 holder mounting portion 400 holder 600 grip C connector W electric wire Y structure

  Hereinafter, embodiments of the present invention will be described using the drawings. In addition, the shape of each figure referred in the following description is a conceptual diagram or a schematic view in explaining a suitable shape dimension, and a dimensional ratio etc. do not necessarily correspond with an actual dimensional ratio. That is, the present invention is not limited to the dimensional ratio in the drawings.

  First, FIG. 1 shows a thimble 100 of the present invention. 1 (a) is a plan view of the thimble 100, FIG. 1 (b) is a side view of the thimble 100, FIG. 1 (c) is a front view of the thimble 100, and FIG. 1 (d) is a rear view. FIGS. 1A and 1B show a state in which the grip 600 is attached to the grip attachment portion 110, and the grip 600 is indicated by an imaginary line.

  The thimble 100 is made of metal, and is a holding part 110 for attaching the end part 610 which is a part of the grip 600, a attaching part 120 for attaching the attachment such as a forceps etc, and a holding member for temporarily holding the electric wire. And a holder mounting portion 130 for mounting the tool. The grip attachment portion 110 includes a penetrating portion 111 which penetrates up and down, and the inner surface 112 of a part of the penetrating portion 111 has a substantially U shape of the end portion 610 (see FIG. 1B) of the grip 600. As corresponding, it is smoothly curved in a substantially U-shape. Thus, as shown in FIG. 1 (b), the distal end 610 of the grip 600 is attached so as to be wound along the inner surface 112. The through portion 111 penetrates up and down along the through axis P, and the end portion 610 of the grip 600 attached to the grip attachment portion 110 is also wound along the through axis P in the up and down direction.

  Next, the connector attachment portion 120 includes two extending portions 121 that extend laterally from the grip attachment portion 110, and an attachment hole 122 is formed in the center of the extension portion 121. Since the distance between the opposing extending portions 121 is equal to or greater than the width of the annular portion R (see FIG. 6A) of the connector C, the annular portion R of the connector C is placed between the extending portions 121. It can be inserted. Then, when the pin-shaped fixing tool is penetrated and fixed in a state in which the hole of the annular portion R and the mounting hole 122 are vertically aligned, the connecting tool C and the thimble 100 are firmly fixed.

  Next, the pair of holder mounting portions 130 are disposed on both sides of the grip mounting portion 110 with the grip mounting portion 110 interposed therebetween. The holder attachment portion 130 has a ring shape, and a connection portion of a holder to be described later can be detachably attached to the ring portion. Further, the holder mounting portion 130 is disposed in a direction substantially perpendicular to the through axis P of the through portion 111 of the grip mounting portion 110.

  Further, as shown in FIG. 1 (b), the width L1 of the grip attachment portion 110 gradually widens toward the end. More specifically, the end portion 610 of the grip 600 is inserted along the through axis P of the through portion 111, but the width L1 of the grip mounting portion 110 in the direction of the through axis P gradually increases toward the end It is getting wider. The reason is as follows. First, when an external force such as wind is applied to the electric wire W to which the grip 600 is attached, the grip 600 is pushed or pulled, and the diameter of the U-shaped curved portion of the end portion 610 becomes Transform to spread. Therefore, when the width L2 of the deformed end portion 610 and the width L1 of the grip attachment portion 110 are largely separated, a large gap is formed between the end portion 610 and the grip attachment portion 110. Then, the end portion 610 can be deformed so that the width L2 becomes larger or smaller in the gap. Then, the distal end portion 610 is subjected to a large stress due to the deformation, and there is a possibility that the distal end portion 610 may be eventually broken. Therefore, the distal end side of the grip attachment portion 110 is gradually widened, so that the width L2 of the distal end portion 610 and the width L1 of the grip attachment portion 110 are not largely separated, and the gap between the two is reduced. Then, since the range in which the end portion 610 can be deformed is narrowed, the stress applied to the end portion 610 can be reduced, and breakage of the end portion 610 can be prevented. In addition, by partially increasing the width only at the end side of the grip attachment portion 110, the overall weight of the thimble 100 can be reduced.

  In addition, although two attachment parts 130 for holders are provided and it is a pair, it is not limited to this, according to a use, attachment parts 130 for holders which became a pair, and other than that for holders The mounting portion 130 may be provided, and a total of three or more holder mounting portions 130 may be provided. In addition, although the pair of holder mounting portions 130 are disposed on both sides of the grip mounting portion 110, the present invention is not limited thereto. Both of the pair of holder mounting portions 130 can be used as the grip mounting portion 110. It may be arranged collectively on one side. In addition, although the pair of holder attachment portions 130 is disposed in a direction substantially perpendicular to the through axis P of the through portion 111 of the grip attachment portion 110, the present invention is not limited thereto. For example, 130 may be disposed in the same direction as the axial direction of the through axis P, or the like.

  Next, a method of supporting the electric wire W using the thimble 100 of the present invention will be described with reference to FIGS. 2 to 5. 2 to 5 are side views showing how the electric wire W is supported at a height of a structure Y such as a utility pole via a connector C such as a ladder. Moreover, the connection tool C and the grip 600 are used for the support method of an electric wire similarly to the past.

  First, as shown in FIG. 2, the connector attachment portion 120 of the thimble 100 is fixed to the annular portion R of the connector C fixed to the structure Y by the pin-shaped fixture Q. Specifically, in a state where the hole of the annular portion R of the connector C and the mounting hole 122 (see FIG. 1A) of the connector mounting portion 120 are vertically aligned with each other, the fastener Q is penetrated to connect The fixture C and the thimble 100 are fixed. Therefore, the thimble 100 is in a state where it can rotate around the fixture Q.

  Next, the electric wire W is pulled toward the structure Y and held by the first holder 400A. The first holder 400A includes a gripping portion 420A (Camler) for gripping the electric wire W, a pull wire 430A connected to the grip portion 420A, and a winding portion 440A (Similar) for winding the pull wire 430A. And a connecting unit 410A connected to the winding unit 440A. The connection portion 410A has a hook shape and can be detachably connected to the holder attachment portion 130 of the thimble 100.

  Then, the worker who climbs the structure Y first attaches the connecting portion 410A to one of the holder attachment portions 130 and separates the holding portion 420A from the structure Y as far as possible within the reach of the hand. Attach to W Next, in this state, the winding portion 440A is driven to wind up the pulling wire 430A. Then, the electric wire W is strongly pulled toward the structure Y and held.

  Then, after winding the pull wire 430A to a certain extent, as shown in FIG. 3, the operator attaches the second holding tool 400B to the electric wire W, and pulls the electric wire W toward the structure Y again to hold it. The second holder 400B has the same structure as the first holder 400A.

  Specifically, the worker attaches the connecting portion 410B of the second holder 400B to the holder mounting portion 130 of the thimble 100. The holder attachment portion 130 for attaching the connection portion 410B is different from the holder attachment portion 130 to which the connection portion 410A of the first holder 400A is attached. That is, the first holder 400A is attached to one holder attaching portion 130, and the second holder 400B is attached to the other holder attaching portion 130. Then, the operator attaches the gripping portion 420B within the reach of the hand to the location of the electric wire W farther than the gripping portion 420A of the first holder 400A, and in that state, drives the winding portion 440B to pull the tension wire 430B. I will take it up. Then, the electric wire W is strongly pulled toward the structure Y and held.

  The grip 420B of the second holder 400B is attached at a position farther from the thimble 100 than the grip 420A of the first holder 400A, and in this state, the pull wire 430B is wound. Therefore, as shown in FIG. 3, the first holder 400A closer to the thimble 100 than the second holder 400B loses its tension and is in a bent state.

  Next, after winding the pull wire 430B to some extent, the worker removes the grip 420A. Then, as shown in FIG. 4, the worker attaches the grip 420A to the location of the electric wire W farther than the grip 420B of the second holder 400B, and in that state, drives the take-up 440A to pull the pull wire Take up 430A. Then, the electric wire W is further pulled toward the structure Y and held. The grip 420A of the first holder 400A is attached at a position farther from the thimble 100 than the grip 420B of the second holder 400B, and in this state, the pull wire 430A is wound. Therefore, as shown in FIG. 4, the second holder 400B closer to the thimble 100 than the first holder 400A loses its tension and is in a bent state.

  Then, the operator drives the winding unit 440A to wind the pulling wire 430A until the wire reaches a predetermined wire tension. Thereafter, as shown in FIG. 5, the second holder 400 B in the bent state is removed, and the process shifts to the mounting operation of the grip 600.

  The operator inserts the grip 600 from the tip end 620 on one side of the grip 600 into the through portion 111 of the grip attachment portion 110 of the thimble 100, and as shown in FIG. The grip 600 is attached to the thimble 100 so that it can be wound (a state in which the end portion 610 is attached to be wound on the through portion 111 is also shown in FIG. 1 (b)). In this state, the grip 600 is attached to the wire W by alternately winding the two tip portions 620 around the wire W in a spiral shape. Thereby, the thimble 100 pulls on the grip 600 attached to the wire W, and a state in which the wire W is stably supported is completed. When the mounting operation of the grip 600 is completed, the first holder 400A is also removed. Further, there is no limitation on the number of times the wire W is pulled up alternately using the first holder 400A and the second holder 400A, and may be implemented any number of times until the wire reaches a prescribed wire tension.

  As described above, according to the thimble 100 of the present invention, since the pair of holder attachment portions 130 is provided, two holders (the first holder 400A, the second holder, and the like) are attached to the holder attachment portion 130. 400B) can be attached to pull in the wire W. And by using two holding fixtures, the quantity which can pull in the electric wire W increases, and it can increase electric wire tension more compared with the past. Therefore, the thimble 100 of the present application contributes to the increase of the wire tension.

  Further, according to the thimble 100 of the present invention, the thimble 100 is provided with both the holder attachment portion 130 for attaching the holder and the grip attachment portion 110 for attaching the grip 600. Therefore, as compared with the conventional case, the difference between the tension direction of the holder temporarily holding the wire W and the tension direction of the grip 600 supporting the wire W is small, and the wire tension is further increased. Can. Specifically, in the conventional FIG. 7, since the holder 300 is directly attached to the structure Y independent of the thimble 500 but not the thimble 500, the tensile direction in which the holder 300 is pulling the electric wire W K and the tension direction I in which the grip 600 is tensioning the wire W are offset from each other. Therefore, after attaching the grip 600 to the electric wire W, when the holder 300 pulling the electric wire W is removed (that is, when the object holding the electric wire W is switched from the holder 300 to the grip 600), This deviation loosens and the wire tension is weakened.

  However, in the thimble 100 of the present invention, since the thimble 100 is provided with both the holder attachment portion 130 for attaching the holder and the grip attachment portion 110 for attaching the grip 600, as shown in FIG. The tension direction K in which the tool 400A is tensioning the wire W and the tension direction I in which the grip 600 is tensioning the wire W are closer to each other as compared with the conventional FIG. Because there is less gap between the two. Therefore, as shown in FIG. 5, even if the first holding tool 400A is removed after attaching the grip 600 to the electric wire W (that is, the object holding the electric wire W by pulling is the grip 600 from the first holding tool 400A). Because the shift is small, the looseness can be suppressed, and the wire tension can be further increased as compared with the conventional case.

  Furthermore, according to the thimble 100 of the present invention, since the pair of holder attachment portions 130 are disposed on both sides of the grip attachment portion 110 with the grip attachment portion 110 interposed therebetween, the first holder 400A and the second holder 400 The position of the wire W pulled by the holder 400B and the position of the grip attachment portion 110 become closer, and the wire tension can be further increased.

  Specifically, as shown in FIG. 2 to FIG. 4, the first holder 400A attached to one holder attachment 130 and the second holder attached to the other holder attachment 130 Since the wire W is pulled from both sides of the grip mounting portion 110 with good balance by 400 B, as shown in FIG. 4, the grip mounting portion 110 located between the pair of holder mounting portions 130 deviates from the wire W The electric wire W can be brought closer to the electric wire W without going in the direction, and the deviation between the position of the grip attachment portion 110 and the position of the electric wire W can be reduced. Then, as shown in FIG. 5, the end portion 610 of the grip 600 is attached to the grip attachment portion 110, but since the displacement is small, the bending of the electric wire W after removing the first holding tool 400A is also suppressed. The wire tension can be further increased. Further, since there is little deviation between the position of the grip attachment portion 110 and the position of the electric wire W, the grip 600 attached to the grip attachment portion 110 can be easily attached to the electric wire W.

  In addition, since the pair of holder mounting portions 130 are disposed on both sides of the grip mounting portion 110 with the grip mounting portion 110 in between, the first holder 400A mounted on each of the holder mounting portions 130 The second holders 400B are less likely to interfere with each other, and work is easier to perform.

  Furthermore, according to the thimble 100 of the present invention, the pair of holder attachment portions 130 is disposed substantially at right angles to the through axis P of the through portion 111 of the grip attachment portion 110. The deflection of the wire W at the time of operation or the like can be suppressed, and the wire tension can be further increased.

  Specifically, as shown in FIG. 5, when the end portion 610 of the grip 600 is attached to the grip attachment portion 110 of the thimble 100, when the winding operation or the like of the tip end portion 620 around the electric wire W is performed When W or the first holder 400A swings, an external force is applied to the holder mounting portion 130 of the thimble 100, and the holder mounting portion 130 may be pulled or pushed. However, as shown in FIG. 1, since the holder mounting portion 130 is disposed substantially at right angles to the through axis P, the holder mounting portion 130 is pulled or pushed to apply an external force. The grip mounting portion 110 adjacent to the holder mounting portion 130 is easy to rotate around the through axis P. And, as shown in FIGS. 1 (a) and 1 (b), even if the grip attachment portion 110 is rotated about the through axis P, the grip 600 attached so as to wind around the grip attachment portion 110 penetrates Only by sliding on the inner surface 112 of the portion 111, the position / posture in the attached state does not easily shift. Therefore, since the position and posture of the grip 600 are unlikely to shift, the bending of the electric wire W resulting from the shift can be suppressed, and the electric wire tension can be further increased.

  If the holder mounting portion 130 is disposed along the through axis P direction, the grip mounting portion 110 moves along the through axis P when the holder mounting portion 130 is pulled. It will Then, the grip 600 attached to the grip attachment portion 110 also moves along the through axis P. As a result, the position and attitude of the grip 600 are easily shifted.

  Furthermore, according to the support method of the electric wire W using the thimble 100 of the present invention, as shown in FIG. 2 to FIG. 5, the first holder 400A attached to one holder mounting portion 130 and the other holder By pulling the electric wire W alternately toward the thimble 100 using the second holding tool 400B attached to the tool attachment portion 130, the electric wire W is pulled more strongly than in the conventional case. The wire tension can be increased. In addition, since the first holding tool 400A and the second holding tool 400B are pulled so as to alternately move, the amount (distance) of the first holding tool 400A and the second holding tool 400B to be moved at one time may be small. . As a result, as shown in FIG. 5, since the distance between the grip portion 420A of the first holder 400 and the thimble 100 can be secured to some extent, a space for winding the tip portion 620 of the grip 600 around the electric wire W to the end is secured. It is easy to do.

  The thimble of the present invention and the method of supporting the electric wire using the thimble are not limited to the above-described embodiments, and various modifications and combinations are possible within the scope of the claims and the scope of the embodiments. These variations and combinations are also included in the scope of the present invention.

Claims (4)

A thimble that pulls on a grip attached to a wire,
A grip mounting portion for mounting a part of the grip;
A connector attachment for attaching a connector for connecting the thimble to a structure;
When attaching the grip to the electric wire, the thimble is provided with a pair of attaching parts for attaching the holder that holds the electric wire.   The thimble according to claim 1, wherein the pair of holder attachment portions are disposed on both sides of the grip attachment portion. The grip attachment portion includes a penetration portion for attaching a part of the grip.
The thimble according to claim 2, wherein the pair of holder attachment portions are arranged in a direction substantially perpendicular to a through axis of the through portion. A method for supporting a wire using the thimble according to any one of claims 1 to 3,
A first holder for holding the electric wire is attached to one of the holder attachment portions,
A second holder for holding the wire is attached to the other holder attachment portion,
The electric wire is pulled toward the structure by alternately pulling the electric wire using the first holding tool and the second holding tool,
Then, the support method of the electric wire characterized by attaching the said grip to the pulled said electric wire.

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