JPH02101914A - Damper for electric wire - Google Patents

Abstract

PURPOSE:To increase twisting energy absorption and to miniaturize a device by connecting a rotating shaft and a weight shaft through the rotating elasticity of an elastic body and the frictional resistance between the elastic body and the rotating shaft and weight shaft. CONSTITUTION:When electric wire bundles 14a and 14b are twisted, a rotating shaft 3 is pivoted and a disk is pivoted, too. This rotating force is absorbed with the frictional resistance between a disk 7 and a washer 12. The rotating force yet tobe absorbed is transmitted from the washer 12 to a spring 8 and absorbed with rotating elasticity of the spring 8. Nevertheless, in case it is not absorbed, the rotating force is transmitted to a washer 11 and absorbed with the frictional resistance between the washer 11 and a caselike section 6. The residual energy rotates the caselike section 6 and is absorbed with the inertia force of a weight 4.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a damper for N and #iI, and particularly to a twist suppression type damper for suppressing twist of a bundle of electric wires made of multiple conductors such as a power transmission line. It is.

[Conventional technology]

Conventional gear lopping dampers suppress gear lopping by preventing the natural frequency of torsional vibration of the vibration system from being an integral multiple of the resonant frequency of vertical motion in the sending MIIA to which a spacer is attached. It is established for the purpose of

However, if the line constant changes due to weather conditions,
Even with a gearropping damper configured in this way,
There are cases where the natural frequency ratio of the vertical motion and the twisting motion is in an integral multiple relationship, so it is not always effective against gear roping, and its installation requires careful consideration.

[Problem to be solved by the invention]

Conventional anti-twist Gunpas are generally large and heavy, which causes stress concentration on the wires and is difficult to handle. Furthermore, as mentioned above, when the line constant changes as mentioned above, the natural frequency ratio of vertical motion and twisting motion becomes an integer multiple, and as a result, gear lopping is amplified. There are various problems that can occur, and we have been trying to solve these problems for some time.

This invention was made to solve the above problems.

The purpose of the present invention is to obtain a gunpa for electric wires that is lightweight and can be passed by a spacecraft without amplifying gearropping.

[Means to solve the problem]

The gunpa for electric wires according to the present invention includes a rotating shaft that is integrally provided with the spacer on both sides in a direction perpendicular to the spacer in the center of the spacer that maintains the conductors at a predetermined interval, and A weight shaft having a weight on each side and a weight shaft provided in a direction perpendicular to the rotation axis is connected to the rotational elasticity of the elastic body and the rotational elasticity of the elastic body, the rotation axis, and the weight shaft at the center of the weight shaft. It is connected to the shaft through frictional force.

[For production]

Since this invention is configured as described above, the twisting motion of the wire bundle rotates the rotating shaft via the spacer, and this rotational force is converted into rotational elasticity by twisting one end of the elastic body. , acts to rotate the weight shaft through frictional resistance between the rotating shaft and the elastic body, and between the elastic body and the weight axis, and this operating force is suppressed by the inertia of the weight. This will prevent twisting.

Further, since the center of gravity of the weight and the weight shaft is configured to be on the rotating pongee, this electric wire damper does not have a natural frequency. Therefore, there is no resonance with the vertical motion, and there is no amplification of gearropping.

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment thereof.

In FIGS. 1, 2, and 3, reference numeral 1 denotes a clamp part that clamps the conductor, 2 a spacer connecting both clamp parts 1, and 3 a spacer 2 in the center of the spacer 2. a rotating shaft integrally provided at right angles on both sides of the
5 is a weight shaft, which has a weight 4 at both ends and is provided on both sides of the spacer 2, and is provided at right angles to the rotating shaft 3, the center of which is shaped like a case. The rotary shaft 3 passes through the case-like portion 6 perpendicularly to the weight shaft 5. *In addition, in FIG. 4, 7 is a disk fixedly provided within the case-shaped portion 6 of the rotating shaft 3, and 8 is a disk.
is an elastic body, for example a spring, provided between the disk 7 and the case-like part 6, and both ends of the spring 8 are fixed to washers 9, 10, and the washers 9, 10 are connected to the case-like part 6 and the friction surface 11.
It is connected via 12. Moreover, 14a and 14b are conductors and constitute a wire bundle.

Since this embodiment is vIIIr as described above, when the mm bundle is twisted, the rotating shaft 3 rotates as shown by the arrow 13, and therefore the disk 7 also rotates.

The rotational force of the disk 7 is absorbed by the frictional resistance between the disk 7 and the washer 12, but the rotational force that cannot be absorbed is transmitted from the washer 12 to the spring 8, which is an elastic body, and the rotational elasticity of the spring 8 absorbed by.

At this time, if the rotational force cannot be absorbed, it is transmitted to the washer 11 and absorbed by the frictional resistance between the washer 11 and the case-shaped part 6, but the remaining rotational force causes the case-shaped part 6 to rotate. , is transmitted to the weight 4 via the weight llll5, and is absorbed by the inertial force of the weight.

In this way, twisting of the wire bundle is absorbed by the wire gunba configured in this way.

Note that in the above embodiment, especially in FIG. 3, the conductor 14a
, 14b are shown as an example of a wire bundle arranged horizontally, but the present invention is not limited to this, and the conductors 14a and 14b may be arranged diagonally or in the mounting direction. , produces the same effect as the above embodiment.

〔Effect of the invention〕

As described above, according to the present invention, the rotating shaft and the weight shaft are connected through the rotational elasticity of the elastic body and the frictional resistance between the elastic body and the rotating shaft and the weight shaft. Therefore, it has a large ability to absorb torsional energy, and therefore can be made smaller and lighter, and as a result, it becomes possible for spacecraft to pass through it.
Furthermore, because the configuration of the device, that is, the center of gravity of the weight, the weight shaft, the case-like part, and the elastic body are located on the rotation axis, it does not have a natural frequency, so no amplification of gear lopping occurs. Moreover, it has the effect of providing a damper for electric wires that also has the function of a spacer and suppresses the twisting motion that causes gear ropping.

[Brief explanation of the drawing]

Fig. 1 is a front view of one embodiment of this invention, Fig. 2 is a Pt5
Figure 1 is a plan view, Figure 3 is a schematic perspective view of fIS Figure 1, and Figure 4 is a schematic perspective view of fIS Figure 1.
The figure is a detailed cross-sectional view of the section ■ in FIG. 2. 1. Clamp part, 2. Spacer, 3. Rotating shaft, 4.
- Weight, 5... Weight shaft, 8... Elastic body (spring), 11.
12...Friction surface. Patent extraction Asahi Electric Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] A rotating shaft that is integrally provided with the spacer on both sides in a direction perpendicular to the spacer in the center of the spacer that maintains the conductors at a predetermined distance, and a rotating shaft that has weights at both ends. The weight shafts, which are provided perpendicularly to ,
A damper for electric wires characterized by being connected.