Closed shell wedge-shaped strain clamp for overhead insulated conductor

Abstract

The invention relates to a closed shell wedge-shaped strain clamp for an overhead insulated conductor. The strain clamp comprises a hanging plate, an interlocked shell and a wedge core body; the hanging plate is composed of a left hanging plate and a right hanging plate which are symmetrically arranged, one end of the left hanging plate and one end of the right hanging plate are connected througha hanging point fastener and can be connected with a hardware string through the hanging point fastener, and the other end of the left hanging plate and the other end of the right hanging plate are rotationally connected with the interlocked shell; the interlocked shell is of a trapezoidal cylinder structure, the interior of the interlocked shell is hollow, the along-line section of the interlocked shell is an isosceles trapezoid, a trapezoidal groove body is formed, the sections of the two sides of the interlocked shell are rectangular, and the rectangular section with the small size is located at the end away from the hanging plate; and the wedge core body is fixedly sleeved on an insulated wire and penetrates through the interlocked shell, and the wedge core body abuts against the innersurface of the trapezoidal groove body of the interlocked shell through the outer surface of the wedge core body, so that the insulated wire can be clamped. The closed shell wedge-shaped strain clampwith is simple and convenient to install on site, reliable in structure, reusable and suitable for strain sections of overhead insulated conductors.

Description

technical field [0001] The invention relates to matching fittings for overhead lines in a distribution network, in particular to a shell-enclosed wedge-shaped strain clamp for overhead insulated wires. Background technique [0002] At present, in the domestic power distribution lines, due to a series of reasons such as the material of the wire insulation layer, the stress state of the wires and the strain-resistant clamps, the on-site installation is not in place, the arc sag is small, and the gear distance is large, etc. Dropout phenomenon. This poses a huge hidden danger to the safe and reliable power supply of the distribution network, especially to personal safety. [0003] The shell section of the existing wedge-shaped insulating tension clamp is C-shaped structure, which is prone to deformation during the stress process, and there is no pre-tightening force between the wedge core and the insulated wire, when the wedge core and the insulated wire When the friction for...

AI Technical Summary

Problems solved by technology

[0002] At present, in the domestic power distribution lines, due to a series of reasons such as the insulation layer material of the wires, the stress state of the wires and the strain-resistant clamps, the on-site installation is not in place, the arc sag is small, and the gear distance is large, etc. dropout phenomenon

This poses a huge hidden danger to the safe and reliable power supply of the distribution network, especially to personal safety.

[0003] The shell section of the existing wedge-shaped insulating tension clamp is C-shaped structure, which is prone to deformation during the stress process, and there is no pre-tightening force between the wedge core and the insulated wire, when the wedge core and the insulated wire When the friction force is not enough to bear the pulling force of the insulated wire, the wire will fall off

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