JPH051951Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a jumper reinforcement device for an overhead power transmission line.

[Conventional technology]

A conventional jumper reinforcing device, for example, as shown in FIG.
An adjustment plate 34 is provided to protrude downward, and this adjustment plate 34
Attach the jumper reinforcing rod 35 with a bolt 36 that pivotally supports the base end and a bolt 39 inserted through the elongated hole 38 at the base end and one through hole 40 of the adjustment plate 34, and attach the jumper reinforcing rod 35 to the jumper reinforcing rod 35. 41 was used to reinforce the jumper wire. The inclination angle of the jumper reinforcing rod 35 and the shape and slackness of the jumper wire 41 can be adjusted using the bolt 3 inserted into the elongated hole 38.
9 into another one of the plurality of through holes 40 provided in the adjustment plate 34.

[Problem that the invention attempts to solve]

By the way, the jumper wire becomes long in the conductor tensioning equipment used to stretch ultra-high voltage power transmission lines.
In order to avoid the adverse effects of snow caps that form across the insulators and the tower arms, conductor tension devices installed in areas with heavy snowfall are equipped with tower arm 1 as shown in Figure 1.
Although a long rod 4 is interposed between the insulator and the insulator chain 3, the jumper wire becomes long in this case as well. In cases where the jumper wire becomes long in this way, reinforcement with only one reinforcing rod 35 as shown in Fig. 4 is extremely insufficient, and the jumper wire may be damaged by falling snow from the conductor tension device, large upward wind pressure, etc. Due to the jump, the permissible insulation distance between the conductor tension device and the steel tower could not be maintained, leading to a power outage.

In addition, the bolt 3 at the base end of the reinforcing rod 35
Since the length between 6 and 39 is very short compared to the length between the wire clip near the adjustment plate for attaching the jumper wire 41 to the jumper reinforcing rod 35 and the pivot bolt 36, the passage of the adjustment plate 34 is Even if the pitch of the holes 40 is made smaller, there is a problem in that the slackness of the jumper wire changes greatly. Furthermore, according to the method described in Japanese Utility Model Publication No. 40-7004 as a means for adjusting the slackness of the jumper wire, multiple replacement holes on the fan-shaped support plate are selected and installed using a fixture fixed to the stretched wire. Each time the slackness of the jumper wire was changed, the stretched electric wire was removed from the fan-shaped support plate and reattached, which was a complicated and time-consuming task.

The present invention has been developed in view of the above points, and has a relatively simple structure that greatly enhances the effect of preventing jumper wire from jumping up, and also allows the shape and slack of the jumper wire to be easily changed without impairing this effect. Moreover, it is an object of the present invention to provide a jumper reinforcing device that can be finely adjusted.

[Means and actions for solving problems]

A connecting fitting 6 in which one insulator chain 3 and one conductor clamp 5 are connected in series in a conductor tension device has a plurality of jumper reinforcing materials 11 formed on the lower conductor side and the upper end of the jumper reinforcing material 11 on the lower insulator side. The upper end of the connecting member 14 is attached to one of the attachment holes 16 by a connector so as to be movable up and down, and the lower end of the connecting member 14 is connected to the lower end side of the jumper reinforcing member 11 by a connector. As a result, the jumper reinforcing material 11 forms a downward triangular frame with the connecting fittings 6 and the connecting members 14, so that the rigidity of the jumper reinforcing material 11 in the vertical direction is particularly increased. For this reason, the deterrent force against deflection of the jumper wire 17, especially against jumping of the jumper wire 17, is large. Furthermore, since the connecting fittings 6 for attaching the jumper reinforcing material 11 and the connecting material 14 are stretched in a straight line together with the insulator chain 3, the conductor clamp 5, and the conductor, the jumper wire can be efficiently
Prevents the jump of 7.

Therefore, since the connecting member 14 is adapted to change its attachment position to the connecting fitting 6 by using the plurality of attachment holes 16 of the connecting fitting 6, the slackness and shape of the jumper wire 17 depend on the amount of attachment position displacement. It will change accordingly.

〔Example〕

Embodiments of the present invention will be described based on the drawings. In Figures 1 to 3, reference numeral 1 denotes a single tension device that is attached to the tip of the tower arm 2 and stretches a conductor. 3 and tower arm 2 to prevent the formation of snow caps, and 1
A series of insulator chains 3 and one conductor clamp 5 are connected in series by a vertical yoke 6 which is a connecting fitting.

As shown in FIG. 3, this vertical yoke 6 has parallel clevises 7 connected to the insulator chain 3 at both upper ends,
Through holes 9 and 10 are bored for attaching the parallel clevis 8 connected to the conductor clamp 5, and a through hole 13 is provided diagonally below the through hole 10 for attaching the jumper reinforcing material 11 with a connector 12. Through hole 1 for attaching connecting rod 14 with connector 15 below through hole 9
There are 5 holes of 6.

Jumper reinforcement rod 11 attached to vertical yoke 6
The connecting rod 14 reinforces the jumper reinforcing rod 11 by connecting the lower end side of the jumper reinforcing rod 11 and the lower end of the connecting rod 14 with a connector 18.
By attaching the upper ends of the connecting rods 14 to different through holes 16 and using the connectors 15, the inclination angle of the jumper reinforcing rods 11 changes, and at the same time, the slackness and shape of the jumper wires 17 change.

It should be noted that the present invention is not limited to the above embodiments, and can be modified in various ways without departing from the gist of the present invention. For example, although the conductor tension device of the embodiment has the long rod 4, it goes without saying that it can also be applied to a normal conductor tension device without a long rod.

[Effect of idea]

The present invention has the following effects.

The jumper reinforcing material forms a triangular frame with the connecting metal fittings and the connecting material, and the vertical rigidity of the jumper reinforcing material is particularly increased, so it is effective in suppressing the swinging of the jumper wire, especially the jumping up of the jumper wire. big.

Furthermore, since the connecting fittings to which the jumper reinforcing material and the connecting material are attached are stretched in a straight line together with the insulators, conductor clamps, and conductors, the tensioning force of the conductor tensioning device effectively prevents jumper wires from jumping up. be able to.

Therefore, the present invention can be applied to a conductor tension device equipped with a long jumper wire, and is useful for preventing accidents such as power outages caused by jumper wires jumping up.

The connecting member, which connects the upper end to the conductor side of the connecting fitting and the lower end to the lower end side (free end side) of the jumper reinforcing material, is not only used to reinforce the jumper reinforcing material, but also to be formed on the lower insulator side of the connecting fitting. By changing the mounting position to the connecting fitting using multiple mounting holes, the shape and slackness of the jumper wire changes in accordance with the amount of displacement of the mounting position, so the shape and slackness of the jumper wire can be easily adjusted. Moreover, it can be finely adjusted.

[Brief explanation of the drawing]

Fig. 1 is a side view of the embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a front view of a connecting fitting for attaching a jumper reinforcing rod and a connecting member, and Fig. 4 is a side view of a conventional device. . 3...Insulator chain, 5...Conductor clamp, 6...Connection fittings (vertical yoke), 11...Jumper reinforcement material (Jumper reinforcement rod), 14...Connection material (connection rod), 16...Mounting hole ( Through hole), 17... jumper wire.

Claims (1)

[Scope of utility model registration request] One series of insulators and one conductor clamp in a conductor tensioning device are connected in series with a connecting fitting, and the upper end of the jumper reinforcing material is attached to the lower conductor side of the connecting fitting so that it can move up and down with a connector. , a plurality of mounting holes are formed on the lower insulator side, and the upper end of the connecting member is attached to one of the mounting holes so as to be movable up and down with a connector, and the lower end of this connecting member is attached to the lower end side of the jumper reinforcement member. A jumper reinforcing device characterized by being connected by a connector.