Cable spacer bar to assist in slowing down the vibration of high-altitude cables

Abstract

The invention discloses a cable spacer bar for assisting in slowing down the vibration of high-altitude cables, comprising a support body with at least two arms and a clamping body arranged at the end of the arms of the support body to clamp cables; the arms of the support body are all telescopic The structure includes a sleeve and a telescopic rod that is sealed and slidably inserted into the sleeve; a piston is provided at the end of the telescopic rod inserted into the sleeve; the piston separates the sleeve into the front cavity near the center of the support body and the The rear cavity away from the center of the support body; the piston is provided with a plurality of through holes connecting the front cavity and the rear cavity; a small amount of energy is obtained without contact to control the viscosity of the electrovariant in each arm, In order to adjust the damping coefficient of each arm of the spacer bar separately, and the spacer bar has controllable damping in three dimensions of rotation, expansion and torsion, which can absorb the vibration of the cable in all directions, and can adapt to and relieve high-frequency slight-amplitude breeze Vibration, mid-frequency and medium-amplitude sub-gap vibration, low-frequency and large-amplitude galloping and other cable vibration modes.

Description

Technical field[0001]The present invention belongs to the field of cable maintenance technology, which is specifically a cable spacer rod that is adjusted to slow the vibration of high-altitude cable.Background technique[0002]The high-altitude cable carries a long-distance transmission, which is the blood vessels of economic development, industrial production and residential electricity. It is not lost. The position characteristics of high-altitude cables are mainly located in areas or mountains, and the location is higher. This process will be affected by various harsh weather, especially the cable vibration caused by external wind or ice. Cable vibration is the periodic movement of the guide line. Depending on the frequency and amplitude, the vibration of the wire can be roughly divided into three types: high frequency micro-wind vibration, the intermediate frequency of the intermediate frequency of the intermediate frequency is dancing of vibration and low frequency amplitude. Th...

AI Technical Summary

Problems solved by technology

All three types of vibration can cause damage to conductors and transmission lines

[0005] The existing damping spacer uses rubber as a damping material at the movable joints of the spacer to consume the vibration energy of the wire. However, in the harsh outdoor environment, the rubber is very easy to age, and the spacer needs to be replaced regularly. In the long run, the cost is relatively high. High, in addition, the damping coefficient of the existing damping spacer is fixed and cannot be changed once it is installed, but the external environment, especially the wind environment that causes the cable to vibrate, the range of wind force changes is extremely large, and the rubber with a small damping coefficient It has little effect when the wind force is strong and the cable swings or dances greatly; the rubber with a large damping coefficient has little effect when the wind force is small and the cable generates breeze vibration

It is difficult to adjust the most suitable damping coefficient according to the difference in wind force and cable vibration, especially the existing spacers have little effect on the dancing of the cable

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