KR-20260066033-A - WIRE FIXING CLAMP FOR STEEL TOWER

Abstract

The present invention relates to a wire fixing clamp for a steel tower that can prevent damage to a wire, wherein the wire fixing clamp for a steel tower comprises a base frame installed on a steel tower and a clamping part provided at the end of the base frame and clamping the wire so as not to contact the base frame. With this configuration, the effect of preventing damage to the wire caused by the wire continuously contacting the clamp due to lateral movement can be obtained.

Inventors

• 장일철
• 김현식
• 배지호

Assignees

• 한국전력공사

Dates

Publication Date

20260512

Application Date

20260428

Claims (1)

1. In a wire fixing clamp for a steel tower that supports a fall prevention wire installed on a steel tower so as not to shake, A base frame installed on the above steel tower; and A clamping part provided at the end of the base frame and clamping the wire so that the wire does not come into contact with the base frame; Includes, The above base frame is, A fastening frame installed on the above steel tower; and A support frame formed to form a ring shape at the end of the above-mentioned fastening frame, having a through hole formed with one side open to allow the wire to be inserted into it, and having the clamping part installed therein; Includes, The above clamping part is, A first clamping part having one end fastened to a support frame of the base frame and the other end elastically pressed to wrap around a portion of the wire; and A second clamping part having one end connected to a support frame of the base frame so as to face the first clamping part, and the other end elastically pressed to wrap around the remaining part of the wire to clamp the wire together with the first clamping part; Includes, The second clamping part above is, A second frame fastening part having screw threads formed on its outer surface and positioned through the base frame; A pair of second fastening members that are screw-fastened to the second frame fastening portion and are positioned on both sides centered on the base frame and fastened to the base frame; and A second grip portion provided at the end of the second frame fastening portion and having a cross-section formed in a semicircular shape; A wire fixing clamp for a steel tower characterized by including

Description

Wire Fixing Clamp for Steel Tower The present invention relates to a wire fixing clamp for a steel tower, and more specifically, to a wire fixing clamp for a steel tower capable of preventing damage to the wire. Generally, steel poles or towers are supports that support high-voltage power lines or communication cables, and workers climb them to perform work such as installing various power lines or communication cables or repairing power distribution equipment or power lines damaged by strong winds or other external factors. Since there is a risk of falling when a worker climbs a steel tower to perform tasks, a vertical wire (safety rope) is installed on the tower, and the worker wears a safety harness and secures the rope connected to the harness to the wire using a fall protection device. The fall guard fixed to the wire can move up and down along the wire, making power line work easier, and in the event of a worker's fall, the fall guard stops by pinching the wire through the principle of leverage, preventing the worker from falling vertically. Generally, as shown in FIG. 1, one end of the wire (1) is fastened and fixed to an upper fixing clamp (2) installed at the top of the steel tower (10), and the other end of the wire (10) is fastened and fixed to a lower fixing clamp (4) installed at the bottom of the steel tower (10). In addition, a plurality of intermediate clamps (3) are provided to support the wire (10) at predetermined intervals (at intervals of about 10m) in the height direction of the steel tower (10). As shown in FIG. 2, the wire (1) installed on the steel tower (10) has an inflection point formed where it bends in a certain section. At this inflection point, the wire (1) comes into contact with the intermediate clamp (3), and fatigue damage occurs due to shaking (lateral movement) caused by wind, etc., and as shown in FIG. 2, the problem of the wire (1) breaking occurs. In addition, as shown in FIG. 2, the intermediate clamp (3) is formed in the shape of a ring having an inner diameter larger than the diameter of the wire (1), so there is a problem in that fatigue damage occurs due to shaking caused by wind, etc., even in sections that are not inflection points. In particular, the higher the steel tower, the more severe the lateral movement caused by the wind, increasing the possibility of damage to the wire (1). Generally, the above wire (1) is made of stainless steel, and since stainless steel is a conductive material, there is a problem where corona occurs when contact is made with a damaged part of the above wire (1). In addition, although the inner surface of the intermediate clamp (3) is coated with an insulating material such as polyurethane, if it detaches due to aging, an induced voltage (the higher the voltage, the greater the induced voltage) is generated between the wire (1) and the intermediate clamp (3), causing a problem of continuous contact sparks. Therefore, as time passes, there is a problem in that the possibility of the wire (1) breaking due to corona and induced voltage increases. FIG. 1 is a schematic diagram illustrating the state in which a conventional fall prevention device for a steel tower is installed on a steel tower. FIG. 2 is a schematic diagram illustrating the state in which a wire is severed by a conventional fall prevention device for a steel tower. FIG. 3 is a schematic perspective view illustrating a wire fixing clamp for a steel tower according to an embodiment of the present invention. FIG. 4 is a schematic plan view illustrating a wire fixing clamp for a steel tower according to an embodiment of the present invention. FIG. 5 is a schematic perspective view illustrating a wire fixing clamp for a steel tower according to another embodiment of the present invention. FIG. 6 is an exploded perspective view schematically illustrating a clamping portion extracted from a wire fixing clamp for a steel tower according to another embodiment of the present invention. Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be interpreted to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in