JPH079558Y2 - Overhead wire retention device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an overhead wire for efficiently performing a pole installation work, etc., in which a through-column type overhead line is changed to a retaining pole type overhead line. The present invention relates to a retaining device.

[Prior art]

As shown in Fig. 3 (a), the overhead wire switching method for changing the overhead wire installed by the conventional pull-through column method (D type arm) to the overhead wire by the retaining column method for the D type arm is as shown in Fig. 3 (a). ,
The electric wire W removed from the insulator 24 is passed through the temporary receiving metal fitting 23a of the temporary arm bar 23 attached to the pole attached to the bucket 22 attached to the tip of the boom 21 of the aerial work vehicle, and then the existing D-shaped arm 25 is installed. Remove the pull-in insulator 24 from each pull-in insulator
Using the mounting holes of the pulling insulators 24 of the D-shaped arm 25 from which 24 has been removed, first attach the pair of left and right straps 26a, 26a, 26a as shown in FIGS. After connecting the tension insulators 27a, 27a, 27a to the left and right straps 26a, 26a, 26a, respectively, finally attach the retention clamps 28a, 28a, 28a to the tips of the tension insulators 27a, 27a, 27a. , The respective wire clamps 28a, 28 corresponding to the respective electric wires W stored in the respective temporary receiving fittings 23a of the temporary arm bar 23.
After returning to a and 28a and clamping, by performing a wire drawing process for each electric wire W, it is the actual situation to switch from the existing pull-through pole system to the pull-through pole system.

[Issues to be solved by the device]

However, in the overhead wire switching work for changing the conventional electric wire W of the pulling-in pole type to the electric wire W of the retaining pole type, first, the temporary arm bar 23 on the pole attached to the bucket 22 is installed to the existing overhead wire W.
Of the temporary receiving metal fittings 23
Temporarily supported by a, each existing pull-in insulator 24 from the D-shaped arm 25
After removing the straps 26a, 26a, 26a as described above, the tension insulators 27a, 27a, 27a and the detention clamps 28a, 28a, 28a are attached to the D-shaped arm 25, and finally the temporary arms 23 are temporarily received. The electric wires W deposited in the metal fitting 23a are returned to the respective corresponding detention clamps 28a, 28a, 28a, and the switch A (see the phantom line portion in FIG. 2B) is provided on the D-shaped arm 25. Each lead wire _{1 of} the switch A when
The connection between the ends of ₂ and ₃ and each of the detention clamps 28a, 28a, 28a is as follows when clamping each clamp 28a, 28a, 28a to each wire W:
After the crimping process before and after the clamping process, and finally by performing the wire tensioning process for each electric wire W, the existing pulling column system is switched to the retaining column system. It is impossible to carry out work by introducing an aerial work vehicle equipped with a car.It is impossible to do each work, and if it is done manually by the operator, it takes too much time and the work is in a live state. In this case, it is necessary to perform a sufficient insulation treatment, which results in a lot of extra work, the work time cannot be shortened, and the work efficiency is very poor, which causes various problems.

[Means for Solving the Purpose and Problem of Invention]

The present invention has been made in view of the above-described problems, and an object of the present invention is to efficiently perform a pole installation work or the like in which an overhead line of a through-column type is changed to an overhead line of a retaining column type. In order to perform well, an overhead wire retaining device is provided, and for that purpose, a switch is equipped at the upper ends of a pair of detention arms arranged with a predetermined gap in the center, and both detention arms are provided. The tension insulator and the detention clamp are sequentially connected to each other via a predetermined number of straps, and the other ends of the lead wires each having one end attached to the switch are connected to the detention clamp.

[Action]

The present invention adopts the above-mentioned overhead wire retaining device to change the overhead installation pole type overhead wire to the retention overhead pole type overhead wire. It is not necessary to temporarily receive the existing electric wire W that has been wired by the temporary receiving metal fittings provided on the temporary arms attached to the bucket, etc., and the straps, tension insulators, and detention clamps required for the retaining column method can be used. It is not necessary to remove the existing pull-in insulator used for the pull-up mounting method from the D-arm in advance to equip the D-arm, and the leads are equipped with a switch on the upper part and facing the switch. Since the wire and the detention clamp are connected as a retaining device, it is not necessary to perform work at a high place, and therefore the switching work from the pull-through column system to the retaining column system is extremely easy, Mount the manipulator device The aerial can be introduced, work safety and greatly shorten the working time can be sufficiently secured.

〔Example〕

Hereinafter, one embodiment of an overhead wire retaining device according to the present invention will be described in detail with reference to FIGS. 1 and 2A and 2B.

In the figure, 1 is a manipulator operation room 3 at the tip of the boom 2.
And an aerial work vehicle equipped with a manipulator device 4,
Reference numeral 5 denotes a manipulator device 4 mounted in front of the manipulator operation room 3 from the back of the manipulator operation room 3.
It is a hoisting device configured to be able to face above.

What is hoisted by the hoisting device 5 and arranged along the D-shaped arm 7 of the telephone pole 6 is the overhead wire retaining device 8 according to the present invention.

The overhead wire detaining device 8 is equipped with a switch 8b at the upper end of a pair of vertically extending detention arms 8a and 8a to be integrated, and the D-arm 7 described above is provided in the center from below. A gap B that can fit along the vertical direction is provided, and straps 8c, 8c, 8c are attached to the left and right retracting arms 8a and 8a at predetermined vertical intervals, and these straps 8
C, 8c, 8c are sequentially connected with detention clamps 8e, 8e, 8e via tensile insulators 8d, 8d, 8d, and one end of the switch 8b is attached to each of the detention clamps 8e, 8e, 8e. Further, the other ends of the left and right lead wires 8f, 8f, 8f are connected and integrally configured.

Hereinafter, a description will be given of how to use the overhead wire retaining device according to the present invention based on the above configuration.

First of all, the working procedure is as shown in FIG. 1, in which the present invention is assembled on the ground without removing the existing electric wire W mounted on the D-shaped arm 7 by the pull-through column method from the pull-in insulator 10. The overhead wire retaining device 8 is moved by the lifting device 5
The upper end of the D-shaped arm 7 is aligned with the upper end of the D-shaped arm 7 just below the gap B formed in the center of the left and right retracting arms 8a and 8a that are vertically arranged.
Slowly lower the overhead wire retaining device 8 that has been lifted directly above the mold arm 7 so that the left and right retaining arms 8a and 8a are vertically aligned on both sides of the D-shaped arm 7 and Bolt holes S and D-shaped arms 7 formed on the upper and lower sides of the retaining arms 8a and 8a.
The bolt holes P drilled at the corresponding positions of are aligned and the bolts 9 are inserted to fix the overhead wire retaining device 8 to the D-shaped arm 7.

Thereafter, the three-phase electric wires W corresponding to each of the detention clamps 8e, 8e, and 8e forming the overhead wire retaining device 8 are provided.
Clamp the left and right positions of the existing pull-through insulators 10
The electric wire W is cut at
By removing 10 from the D-shaped arm 7, the electric wire W installed by the pull-through pole system is switched to the overhead line of the retention pole system, and the overhead wire retention device 8 of the present invention is used for the overhead line. Finish the line switching work.

As described above, since the existing overhead pole of the pull-through pole system is changed to the overhead line of the retaining pole column system, the existing electric wire wired by the pull-through pole column method to the D-type arm 7 is used. W
, It is not necessary to temporarily receive it with a temporary receiving metal fitting provided on a temporary arm tree attached to a bucket, etc. as was done in the conventional overhead wire switching work, and furthermore, the straps 8c, 8c, 8c required for the retaining pole system , Tension insulators 8d, 8d, 8d, tension clamps 8e,
Left and right lead wires 8 exposed from 8e, 8e and switch 8b
Since f, 8f, and 8f are pre-assembled on the ground etc. as the overhead wire retaining device 8, it is not necessary to assemble them one by one at a high place as in the conventional work. The work of switching to the pillar system is extremely simple, and as described in the above embodiment, it is possible to introduce the aerial work vehicle 1 equipped with the manipulator device 4, and therefore the work time is increased. It is greatly shortened and the work is safe.

[Effect of device]

As described in detail above, the present invention is equipped with a switch at the upper ends of a pair of detention arms arranged with a predetermined gap in the center, and a predetermined number of straps are attached to both the detention arms. The tension insulator and the strain clamp are sequentially connected, and the other end of the lead wire having one end attached to the switch is connected to the strain clamp.

[Action]

Since the present invention adopts the above-mentioned overhead wire retaining device to change the pull-through column type overhead line to the retainer column type overhead line, the D-type arm is provided with the pull-through column type. It is not necessary to temporarily receive the existing electric wire W that has been wired by the temporary receiving metal fittings provided on the temporary arms attached to the bucket, etc., and the straps, tension insulators, and detention clamps required for the retaining column method can be used. It is not necessary to remove the existing pull-in insulator used for the pull-up mounting method from the D-arm in advance to equip the D-arm, and the leads are equipped with a switch on the upper part and facing the switch. Since the wire and the detention clamp are connected as a retaining device, it is not necessary to perform work at a high place, and therefore the switching work from the pull-through column system to the retaining column system is extremely easy, Mount the manipulator device It is possible to introduce the aerial work platforms, with an equal variety of excellent effects the safety of working with significant reduction in working time can be sufficiently secured.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a work procedure for carrying out the overhead wire retaining device according to the present invention on an aerial work vehicle equipped with a manipulator device, and FIG. 2 (a) relates to a D-shaped arm according to the present invention. Explanatory drawing showing the procedure for attaching the overhead wire retention device,
FIG. 3B is a perspective view showing a state in which the overhead line switching work is finished, and FIGS. 3A, 3B, and 3C are explanatory views showing the conventional overhead line switching work. (a) is a perspective view showing a state of temporary support of an overhead wire, (b) is a perspective view showing a state in which a D-type arm is provided with a retaining column method, and (c) is a D-type arm of a strap. FIG. 6 is a cross-sectional view of a main part showing a mounting state with respect to FIG. 1 ... Aerial work vehicle, 2 ... Boom, 3 ... Manipulator operation room, 4 ... Manipulator device, 5 ... Lifting device, 6 ...
Utility pole, 7 ... D-shaped arm, 8 ... Overhead wire retaining device, 8a ...
Arms for detention, 8b ... Couplings, 8c ... Straps, 8d ... Strength resistant insulators, 8e ... Detention clamps, 8f ... Lead wires, 9 ... Fixing bolts, 10 ... Throwing insulators, B ... Gap, W ... Wires, X … Cutting point.

Claims (1)

[Scope of utility model registration request] 1. A tension insulator and a detention clamp with a switch provided at the upper ends of a pair of detention arms arranged with a predetermined gap in the center, and a predetermined number of straps being provided on both of the detention arms. And the other ends of the lead wires each having one end attached to the switch are connected to the pulling clamp, respectively.