Power line connection fitting capable of adapting to different temperatures

Abstract

The invention relates to the technical field of cable protection equipment, in particular to a power line connection fitting capable of adapting to different temperatures. The power line connection fitting comprises a cross arm, wherein a fixing hole is formed in the cross arm, a hanging ring is installed at the position, located at the fixing hole, of the cross arm through a pin shaft, a hanging lug is installed at the bottom part of the hanging ring through a pin shaft, a protection device is fixedly welded to the bottom part of the hanging lug and comprises a connecting plate fixedly welded to the bottom part of the hanging lug, a sleeve is fixedly welded to the bottom part of the connecting plate, a bolt is arranged in an inner cavity of the sleeve, a limiting ring sleeves the bolt, a spring sleeves the outer wall of the bolt and is located at the bottom part of the limiting ring, a sealing plate sleeves the outer wall of the bolt and is located at the bottom part of the spring, the sealing plate is fixedly welded to the bottom part of the sleeve, and a pull ring is fixedly welded to the end, penetrating through the bottom part of the sealing plate, of the bolt. The power line connection fitting can protect a lead wire, adjusts the sag of the lead wire adaptively, and avoids breakage and damage caused by thermal expansion and cold contraction in extreme weather.

Description

technical field [0001] The invention relates to the technical field of wire protection equipment, in particular to a power line connection fitting capable of adapting to different temperatures. Background technique [0002] In my country, due to the large span between the north and the south, the temperature difference in temperature also varies greatly. In the area north of the Huaihe River, the outdoor temperature difference is generally around 60°-70°. In the construction of the power grid, the wires are subject to changes in temperature. In the hot summer, the outdoor temperature is generally around 50°. Due to the thermal expansion and elongation of the wire, the sag of the wire is reduced, and the height of the wire to the ground is reduced, which poses a safety hazard; A short circuit is formed, causing a large-scale power outage, which brings great losses to users and enterprises. In the twelfth lunar month of winter, due to the lowering of the temperature, the ou...

AI Technical Summary

Problems solved by technology

In the hot summer, the outdoor temperature is generally around 50°. Due to the thermal expansion and elongation of the wire, the sag of the wire is reduced, and the height of the wire to the ground is reduced, which poses a safety hazard; A short circuit is formed, causing a large-scale power outage, which brings great losses to users and enterprises

In the twelfth lunar month of winter, due to the lowering of the temperature, the outdoor temperature is around -20°, the wires shrink, the wires are stretched, and due to the long-term force, the mechanical strength of the wires is reduced and the wires are broken, forming a grounding fault and causing a large-scale power outage. Bring great losses to users and enterprises

[0003] When the existing power line is erected, the wire sag is small and the application force is large, causing the wire to break, and the wire sag is large, which will affect the appearance. The height of the ground will be reduced, which is likely to cause safety hazards. Therefore, there is a lack of a protective device that can protect the wires from damage in harsh environments.

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