JP2938388B2 - Jumper wire holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jumper wire holder for holding a jumper wire in an operation of cutting and repairing a jumper wire for an indirect live line construction.

[0002]

2. Description of the Related Art As shown in FIG. 1, at the locations where the ends of wires A and B on both sides of a support D are fastened to the support D, a connection between the wires A and B is established. A jumper line a is provided. The jumper wire a is crimp-connected at both ends to electric wires A and B, respectively, is sealed with an insulating cover H, and the vicinity of the center portion is wound around a support insulator G with a bind wire F and fixed. Then, at the time of construction, in order to cause a power outage only on the downstream side of the jumper wire a, a cut near the curved portion b of the jumper wire a is performed, and thereafter, restoration is performed.

[0003] After the jumper wire a is cut, until the jumper wire a is connected by the restoration, since the upstream side is energized, it is necessary to surely separate the cut end faces of the jumper wire a. 2 uses a jumper wire holder 51 as shown in FIG.

[0004] The jumper wire holder 51 includes a main shaft 5.
2 and a fixed gripper 5 fixed to one end of the main shaft 52.
3 and a movable gripper 54 that slides in the axial direction of the main shaft 52 and is positioned at an arbitrary position thereof. The movable gripper 54 is positioned at a predetermined position by a positioning bolt 55 or the like.

The grippers 53 and 54 are configured to be able to detachably hold the jumper wire a. After the jumper wire a is cut after the jumper wire a is gripped,
After being moved in the direction of the arrow in FIG. 2, the movable gripper 54 is fixed at that position by the positioning bolt 55. As a result, the cut end faces of the jumper wire a are separated and held.

[0006]

However, in the conventional jumper wire holder, it is difficult to smoothly perform a remote operation for moving the movable-side gripper 54, and the movable-side gripper 54 is connected to the axis of the main shaft 52. In order to move in the direction of the center, it is necessary to take a sufficient moving distance, and there is a problem that work efficiency is poor. In general, since the jumper wire a does not have great flexibility, forcibly straightening the curved jumper wire a by a gripping operation is inefficient, and the jumper wire a is maintained during the holding of the jumper wire a. There is a problem that it is not preferable because a large stress is still applied to the connecting portions between the wires and the wires A and B.

The present invention provides a jumper wire holder for gripping a jumper wire corresponding to various installation states of the jumper wire, and saving power, efficiently and safely remote operation of cutting and repairing the jumper wire. The purpose is to provide.

[0008]

In order to achieve the above object, a jumper wire holder according to the present invention comprises two main shafts connected in a bent state and a pair of main shafts respectively held by the two main shafts. A jumper wire gripper, and at least one of the jumper wire grippers pivots the cut one jumper wire in a direction deviating from a plane on which the jumper wire gripped by the pair of jumper wire grippers exists. It is characterized in that it is configured to have a rotating part for causing it to rotate.

According to the jumper wire holder of the present invention,
Since both the gripping portions can grip the curved jumper wire along the horizontal portion and the inclined portion, the operation can be performed without applying a large stress to the jumper wire and the connection portion between the jumper wire and the electric wire. In addition, since the one jumper wire after cutting can be inclined and held in a direction deviating from the surface, both cut end surfaces of the jumper wire can be reliably separated. Furthermore,
The two cut end faces of the jumper wire can be separated by only the turning operation of the grip portion, and remote control can be easily performed.

[0010] In the jumper wire holder of the present invention,
When the connecting portion connecting the two main shafts is configured to be able to change the angle, the jumper wire can be gripped according to the curved state of the jumper wire which is different for each work location, so that the jumper wire or the jumper wire and the electric wire can be grasped. Work can be performed more easily without applying a large stress to the connection portion and the like.

When the rotating portion of the jumper wire gripper of the jumper wire holder according to the present invention is configured such that the gripping portion for gripping the jumper wire rotates about an axis substantially parallel to the surface, a direction in which the jumper wire deviates from the surface. The structure of the rotating portion for inclining the one jumper wire after cutting can be realized with a simple structure.

The jumper wire gripper of the jumper wire holder according to the present invention may be configured such that the jumper wire gripper is rotatable about an axis substantially perpendicular to or parallel to the base block held by the main shaft. The following effects can be obtained by configuring the intermediate block attached to the base block and the gripper attached to the intermediate block so as to be rotatable about an axis substantially perpendicular to the rotation center axis of the intermediate block. There is.
In general, after cutting the jumper wire a, when connecting the jumper wire a by repair, a sleeve is inserted and crimped to the other cut end face in advance about half of its entire length, so that the other cut end face insertion opening of the sleeve is It is located about half the length of the sleeve over the axis of the other cut end. In the above-described situation, according to the configuration of the jumper wire gripping tool, the one jumper wire after cutting in the plane is rotated around a rotation axis perpendicular to the plane, and the cut end face is rotated in the other plane. Since there is also a mechanism for separating the cut end face on the axis from the cut end face, it is easy to insert the one cut end face into the sleeve.

[0013]

An embodiment of the present invention will be described with reference to the drawings. 3 and 4, the jumper wire holder 1 according to the present invention has a first connection in a bent state.
It comprises a main spindle 2, a second main spindle 3, a fixed gripper 7 held by each of the two main spindles, and a gripper 8 for gripping the jumper wire a, and a rotating gripper 8.

The first main spindle 2 is composed of a pipe 4 made of FRP and a first main spindle side connecting member 9 fitted and fixed to the base end of the pipe 4.
And a flanged plug 2 fitted and fixed to the outer end of the pipe 4
1 and 1.

The second main shaft 3 is composed of a pipe 5 made of FRP and a second main spindle side connecting tool 1 fitted and fixed to the base end of the pipe 5.
0, an insulating umbrella 12 fitted and fixed to the pipe 5, and a flanged plug 21 fitted and fixed to the outer end of the pipe 5.

The details of the bent portion 6 are shown in FIGS. First
The end of the main shaft side connecting tool 9 is flat. The flat portion 9c is provided with a hole 9a through which the shaft portion 11a of the connecting bolt 11 passes, and is disposed at a distance of 15 degrees from the circumference around the hole 9a. And two positioning pins 9b are provided. Second
The end of the spindle-side coupler 10 is flat, and the flat portion 10
c has a screw hole 10a screwed to the shaft portion 11a and five positioning holes 10b arranged at intervals of 15 degrees on a circumference centered on the screw hole 10a. Inserting the two positioning pins 9b into any two adjacent positioning holes 10b among the five positioning holes 10b, aligning the flat portions 9c and the flat portions 10c, and fastening the connection bolts 11 As a result, the first main shaft 2 and the second main shaft 3 are bent at 90 °, 105 °, 120 °, and 1 °.
It is connected so that it can be changed in four stages of 35 degrees.

As shown in FIG. 4, the fixed side gripping portion 7 has a channel-like base portion 13 attached to the pipe 4 of the first main shaft 2 by a fixing bolt 26 so as to be changeable in the axial position and the rotational position around the axis. The slider 25 includes a slider 25 that is guided by 13a and moves with its rotation restricted, and a drive screw 27 that moves the slider 25 and has a hexagonal head 27a. The channel base 13 is provided with a through hole that fits into the pipe 4 and a screw hole that is screwed into the fixing bolt 26. On the inner wall 7b of the channel base 13,
A recess 7d for receiving the jumper wire a and an R chamfer 7e for preventing the jumper wire a from being damaged when the jumper wire a is gripped are provided. The outer wall 7c of the channel base 13 is provided with a screw hole to be screwed into the drive screw 27. The slider 25 has, on one surface, a recess 25a for receiving the jumper wire a, and an R chamfer 25b for preventing the jumper wire a from being damaged when the jumper wire a is gripped. A bearing hole for receiving the tip of the drive screw 27 is provided.
7 Pin 2 which penetrates the circumferential groove at the tip and has the effect of retaining
8 is attached.

As shown in detail in FIGS. 4 and 8 to 10, the pivot-side gripping tool 8 is attached to the pipe 5 of the second main shaft 3 by a fixing bolt 26 so that the axial position and the rotational position around the axis can be changed. Base block 14, and an intermediate block 15 attached to the base block 14 so as to be rotatable around a first rotation axis 19 perpendicular to a plane including the two main shafts 2 and 3.
And the second block parallel to the plane with respect to the intermediate block 15.
And a gripping portion 16 attached so as to be rotatable around the rotation shaft 20.

The base block 14 has a through hole 14 a fitted to the pipe 5 at the base, a screw hole 14 b screwed to the fixing bolt 26, and a first rotating shaft 19 at a contact surface with the intermediate block 15. A hole 14e fitted and provided with a retaining groove for the snap ring 19a, a hole 14c on the side, and a through hole 14d are provided. The operation ring 17 having a spring 22 and a snap ring 23 and penetrating through the through hole 14d and protruding to the outside, and a plug 24 are attached to the hole 14c.

The intermediate block 15 includes a base block 14
A hole 15a provided at a contact surface with the gripper 16, a hole 15b provided at a right angle to the hole 15a, and a hole 15b
The hole 15c and the through-hole 15d are provided in parallel with each other. In the hole 15a, one key recess 19b into which the shaft tip of the operation ring 17 protrudes, and a snap ring 19a
The first rotation shaft 19 having the following is press-fitted and fixed. Hole 1
5b includes a second rotating shaft 2 having a snap ring 20a.
0 is press-fitted and fixed. An operation ring 18 having a spring 22 and a snap ring 23 and penetrating through the through hole 15d and projecting to the outside is attached to the hole 15c.

The holding portion 16 has a hole 16a fitted on the contact surface with the intermediate block 15 with the second rotating shaft 20 and provided with a retaining groove for the snap ring 20a, and a circular hole around the hole 16a. 6 key recesses 16b into which the shaft tip of the operation ring 18 protrudes, and the channel portion 1 on the opposite side.
6c. The channel 16c has the same structure as the channel base 13 of the fixed grip 7. That is, on the inner wall 16d of the channel portion 16c,
A recess 16g for receiving the jumper wire a is provided, and a slider 25 guided by the bottom surface of the channel portion 16c to move while being restricted in rotation, and a drive for moving the slider 25 are provided on the outer wall 16e of the channel portion 16c. Screw 2
7 are attached. On one surface of the slider 25, a recess 25a for receiving the jumper wire a is provided.

By the structure of the bent portion 6, the angle of the bent portion 6 can be changed in the above three stages, and the channel-shaped base portion 1 can be changed.
3. Due to the configuration of the base block 14, the fixed gripper 7,
Since the mounting position of the rotating side gripper 8 can be changed, FIG.
As shown in (a) to (c), the jumper wire holder 1 can be applied according to the installation state of various jumper wires a, that is, various bending angles and lengths of the jumper wires a.

FIG. 10 shows the structure of the above-mentioned rotating side gripper 8.
As shown in (a), the intermediate block 15 is moved from the base block 14 to the first block by remote control of the operation ring 17.
It is turned around the turning shaft 19 and locked at one place.
As shown in FIG. 10B, the grip 16 is moved to the intermediate block 15 by the remote operation of the operation ring 18.
It is turned around the turning shaft 20 and is locked at six points every 60 degrees around the entire circumference. Since the first rotation shaft 19 and the second rotation shaft 20 are perpendicular to each other, the gripper 16 can be rotated with respect to the base block 14 with two degrees of freedom of rotation. The one jumper wire a after cutting is arranged in a direction in which the distance in the axial direction of the jumper wire a between the cut end faces is widened, and in a direction away from the plane where the jumper wire a held by the two gripping tools 7 and 8 exists. Can be rotated.

The method of using the jumper wire holder of the present invention will be described below with reference to FIGS. First, the jumper wire holder 1 is prepared according to the installation state of the jumper wire a. That is, in FIG. 4, the angle of the bent portion 6 is set and fixed by operating the connecting bolt 11 at hand, and the axial positions of the fixed-side gripping tool 7 and the rotating-side gripping tool 8 are operated by operating the pair of fixing bolts 26. And the rotation position around the axis is set and fixed. Next, the first main shaft 2 of the jumper wire holder 1 is clamped by a remote control screw, and between the recess 7d and the recess 25a of the fixed-side holding tool 7, and between the recess 16g and the recess 25a of the rotating-side holding tool 8, Insert the horizontal part c and the inclined part d of the jumper wire a, respectively, and use the remote control wrench to set the hexagonal heads 27a of both.
To a gripping state. After cutting the jumper wire a by a separate cutter, as shown in FIG. 11, the operating ring 18 is pulled by the remote control hook P, and the grip 16 of the rotary grip 8 is turned 30 degrees with respect to the intermediate block 15. And both cut end surfaces of the jumper wire a are separated and held. At the time of repair of the jumper line a after the completion of the indirect hot-line work, first, as shown in FIG. 12, the operation ring 17 is pulled by the remote operation hook P, the intermediate block 15 is rotated with respect to the base block 14, and With the distance in the direction of the axis of the jumper line a being widened, as shown in FIG. 13, the operation ring 18 is pulled by the remote operation hook P, the grip portion 16 is rotated with respect to the intermediate block 15 and returned to the original position. As shown in FIG. 14, by rotating the intermediate block 15 with respect to the base block 14 and returning the intermediate block 15 to the original position, the jumper wire a is connected to the sleeve Q separately preliminarily fastened to the cut end surface of the fixed side c of the jumper wire a. Insert the cut end face of the movable side d.

[0025]

Since the present invention has the above configuration,
The following effects are obtained. That is, since both grip portions can be gripped along the curved horizontal portion and the inclined portion of the jumper wire, the work can be performed without applying a large stress to the jumper wire and the connection portion between the jumper wire and the electric wire. In addition, since the one jumper wire after cutting can be inclined and held in a direction deviating from the surface, both cut end surfaces of the jumper wire can be reliably separated. Further, the two cut end faces of the jumper wire can be separated by only the turning operation of the grip portion, and remote control can be easily performed.

Further, the jumper wire can be gripped according to the curved state of the jumper wire which changes variously for each work location.

Further, at the time of repairing the jumper wire, the one jumper wire cut in the plane is rotated around a rotation axis substantially perpendicular to the plane, and the cut end face is turned into the other cut end plane. Since it also has a mechanism for separating the cut end face from the sleeve in the axial direction, it is easy to insert the one cut end face into the sleeve.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of installation of jumper wires.

FIG. 2 is a front view showing an example of a conventional jumper wire holder.

FIG. 3 is a front view showing the embodiment of the present invention.

FIG. 4 is a perspective view of a jumper wire holder.

FIG. 5 is an exploded perspective view showing details of a bent portion.

6A and 6B show details of a bent portion, wherein FIG. 6A is a front view of the bent portion, and FIG. 6B is a side view of the bent portion.

7A and 7B show various jumper wire installation states and examples of application of a jumper wire holder in which the angle of a bent portion is changed correspondingly. FIG. 7A shows a jumper wire when the jumper wire installation state is standard. Front view showing an example of using the holder, (b) is a front view showing an example of using the jumper wire holder when the jumper wire is longer than the standard, and (c) is an example of using the jumper wire holder when the jumper wire is shorter than the standard. FIG.

FIG. 8 is a perspective view showing a rotating side grip.

FIG. 9 is a plan view showing the details by breaking a part of the rotating-side grip.

FIGS. 10A and 10B show the rotation of the rotation-side grip portion, where FIG. 10A is a front view of the rotation-side grip portion, and FIG. 10B is a side view of the rotation-side grip portion.

FIG. 11 is a perspective view showing a state in which a turning-side grip is turned after cutting the jumper wire to separate both jumper wires.

FIG. 12 is a perspective view showing a state in which the intermediate block is rotated with respect to the base block and the distance in the axial direction of the jumper wire between both cut end surfaces is increased after completion of the indirect hot-line work.

FIG. 13 is a perspective view showing a state in which the gripper is rotated with respect to the intermediate block and returned to its original position.

FIG. 14 is a perspective view showing a state in which the movable block is inserted into a sleeve previously fastened to the fixed cut end by rotating the intermediate block with respect to the base block and returning the intermediate block to the original position;

[Explanation of symbols]

 Reference Signs List a Jumper wire b Curved jumper wire c Horizontal portion of jumper wire d Inclined portion of jumper wire 1 Jumper wire holder 2 Horizontal rod 3 Inclined rod 6 Bending portion 7 Fixed gripper 8 Rotating gripper 14 Base block 15 Intermediate block 16 Gripping tool 17, 18 Operation ring A, B Electric wire

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tamotsu Iwama 3-4-31 Taida, Daito-shi, Osaka Inside Nagaki Seiki Co., Ltd. (56) References JP-A-9-224412 (JP, A) (58) ) Surveyed field (Int.Cl. ⁶ , DB name) H02G 1/02-1/04 H02G 7/20

Claims (4)

(57) [Claims] 1. A vehicle comprising: two main shafts connected in a bent state; and a pair of jumper wire grippers held by each of the two main shafts, wherein at least one of the jumper wire grippers includes the pair of jumper wire grippers. Characterized in that the jumper wire holder has a turning portion for turning the one jumper wire after cutting in a direction deviating from a surface on which the jumper wire held by the jumper wire holding tool is present. . 2. The jumper wire holder according to claim 1, wherein a connecting portion connecting the two main shafts is configured to be able to change an angle. 3. The jumper wire according to claim 1, wherein the rotating portion of the jumper wire gripping tool is configured such that the gripping portion for gripping the jumper wire rotates about an axis substantially parallel to the surface. holder. 4. A base block in which a jumper wire gripper is held on a main shaft, an intermediate block mounted on the base block so as to be rotatable about an axis substantially perpendicular or parallel to the surface, 4. The jumper wire holder according to claim 3, further comprising: a grip portion attached to the intermediate block so as to be rotatable about an axis substantially perpendicular to a rotation center axis of the intermediate block.