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RU-2861447-C1 - DEVICE FOR FIXING ROD INSULATOR

RU2861447C1RU 2861447 C1RU2861447 C1RU 2861447C1RU-2861447-C1

Abstract

FIELD: overhead contact line devices. SUBSTANCE: device for fixing a rod insulator consists of two parts, each of which is made from a channel of industrial steel welded together, forming a V-shaped eye, and a rod with a thread applied to it. The part for fixing the insulator on the feeder bracket is connected on one side to the insulator by means of a V-shaped eye, and on the other side is connected to the bracket by means of a threaded rod with its fixation by a nut. The part for fixing the insulator to the saddle is connected on one side to the insulator by means of a V-shaped eye, and on the other side is attached to the saddle by means of a threaded rod with its fixation by a nut. EFFECT: extending the service life of the supply wires and mounting the insulator to the feeder bracket with the possibility of its movement. 3 cl, 2 dwg

Inventors

  • Filenkov Aleksej Aleksandrovich

Dates

Publication Date
20260505
Application Date
20250826

Claims (3)

  1. 1. A device for fixing a rod insulator, consisting of two parts, each of which is made of a channel made of industrial steel, welded together, forming a V-shaped eye, and a rod with a thread applied to it, the part for fixing the insulator on the feeder bracket is connected on one side to the insulator by means of a V-shaped eye, on the other side is connected to the bracket by means of a threaded rod with its fastening with a nut, the part for fixing the insulator to the saddle is connected on one side to the insulator by means of a V-shaped eye, on the other side is connected to the saddle by means of a threaded rod with its fastening with a nut.
  2. 2. The device according to paragraph 1, characterized in that the design allows the insulator to be moved along the bracket to prevent the supply wire from coming close to grounded structures.
  3. 3. The device according to paragraph 1, characterized in that the part attached to the saddle is movable to distribute the load on the wire in order to prevent chafing and breakage.

Description

Field of technology The invention relates to contact network devices, in particular fastening devices designed to improve working conditions and extend the service life of wires. State of the art A sliding overhead contact system suspension (Patent No. 2135375) is known from the prior art and relates to railway electrification. The suspension has an elastic clamp secured to the contact wire with the ability to slide longitudinally relative to the latter. The clamp has notches in the lower center of each jaw, where it attaches to the contact wire. The clamp is suspended from the lower ends of a vertical and two oblique strings by a shackle located in the notches. The strings are secured to the carrier cable by three rigid, bolted string clamps. The length of the elastic clamp is at least four times the height of the notches, and the oblique strings are inclined in opposite directions at angles to the vertical of at least 45°. The elastic clamp is equipped with latches consisting of rods and handles, pivotally connected to each other and collectively forming cam mechanisms. The disadvantage of this solution is that it cannot be installed at intersections of contact network routes. A device is known for suspending the wires of an overhead switch of a contact network (patent no. 2075406), comprising elastically stretched branches of supporting cables, connected at the intersection with a clamp, springing wire elements installed on both sides of the overhead switch and connected at the ends with clamps to the supporting cables and through link strings - with the branches of the contact wires, fastened with a cross-shaped plate, a three-rod frame insert, installed at one end on a springing wire, secured with a clamp on one of the supporting cables, and at the other end with the help of flexible guy wires in a V-shape through clamps connected to two adjacent branches of the supporting cables, made of two lower longitudinally parallel rods with half rings at the ends, rigidly fastened with a third rod. On the lower parallel rods, movable bracket-shaped clamps with thimbles and link strings are installed, connected to the branches of the contact wires with the possibility of independent longitudinal movement and maintaining standardized suspension height levels in the pickup zone when the temperature changes. The disadvantages of this solution are the complexity of the design and the need to manufacture a significant number of additional parts. A device for suspending contact wires of railway transport is known (patent No. 25470), which relates to the field of electrified railways, in particular to devices for fastening contact wires of a traction network to a supporting cable, primarily at the intersection of contact wires. The disadvantage of this solution is the high mobility of the structure. Of the known proposals, the most closely related is the Double Contact Network Clamp (Patent No. 116866), which is designed as a shortened main rod that allows two additional clamps to be moved along its entire length within certain limits—namely, within the minimum clearance limits for the overhead contact suspension to pass through an artificial structure. Another similar design is the Double Contact Network Clamp (Patent No. 133474), which consists of a polymer rod insulator connected to a shortened main rod made of a tubular profile. A hinge assembly made of channel-shaped steel sheet is attached to the main rod. Additional clamps made of a tubular profile are attached to the hinge assembly, which are fitted with holders with brass clamps for securing the contact wires. The additional clamps with forged end fittings are secured using flared stainless steel bushings. A "clamp eye" is installed on the main rod pipe for securing the string. The "clamp eye" consists of two stamped plates—the "cheek"—that are tightened around the pipe using fasteners. The disadvantage of these solutions is the large number of components and the complexity of the design. Disclosure of the essence of the invention The technical problem addressed by the invention is to extend the service life of feeder wires and install an insulator on a feeder bracket with the ability to move it, preventing the feeder wire from coming close to grounded structures when the ambient temperature drops. These two problems were solved using the developed clamp, which consists of two movable parts. Unlike other factory-made parts, this clamp reduces the time required to install the insulator. This results in increased labor productivity. The technical result is achieved in that the invention consists of two parts, which are made from welded together channels of industrial steel and rods with threads applied to them, one part is intended for connecting the insulator to the bracket, the second part is for connecting the insulator to the saddle for laying the feeder wire, the design allows the insulator to be moved along the bracket to prevent the feeder wire from appro