RU150537U1 - ANCHOR CLAMP - Google Patents

Abstract

1. Anchor clamp for attaching self-supporting insulated wires of overhead power lines, consisting of a housing of at least two wedges inserted into an open cut-out of the housing, between which the wire is clamped and wedged without damage to the insulation, a connecting element made in the form of a flexible cable with fixed it has an arc thimble and limiters at the ends, while curved grooves and nests are made in the shoulders on the side walls of the housing, into which the cable fastening stops are inserted, made in ie mounted on a cylindrical or polyhedral cable vtulok.2. Clamp according to claim 1, in which the ends of the flexible cable are fixed in cylindrical or multifaceted bushings by crimping. 3. The clamp according to claim 1, in which the bending angle of each groove made in the shoulders on the side walls of the housing is at least 22 °.

Description

The utility model relates to the field of electric power industry, in particular to anchor clamps for fastening self-supporting insulated wires to the supports of overhead power transmission lines.

Known anchor clamp containing linings of aluminum alloy, a movable wedge connected to a steel arch, clamping cheeks with 4 arcuate grooves having transverse grooves to hold the wires, while the cheeks and movable wedge are spring-loaded and tightened with 2 bolts with washers, and the clamping cheeks and the movable wedge are made by casting of durable polymer, the clamping cheeks are made with 4 arcuate grooves for wires 35-95 mm ² , and the steel bow is made of wire 570-610 mm long [1].

This well-known clamp is quite structurally complex, its parts are made of expensive and scarce materials, in addition, the clamp is functionally designed for fastening wires of only a certain range of cross-sections.

Also known is an anchor clip for securing wires, comprising a holder, a body with a conical hole and a collet installed in it with longitudinal cuts from the large diameter side, while the collet is made with a protrusion located on the outer surface at the end of the collet with cuts and interacting with the housing at maximum load [2].

The disadvantages of this clamp include the complexity of the manufacturing process of manufacturing its elements such as a case with a conical hole and a collet with a protrusion and longitudinal cuts from the side of a large diameter, as well as the uncertainty of the work of the clamp at small loads (wire slipping in the clamp housing is possible).

Known, in addition, the anchor clip for attaching an optical cable of the type of eight, comprising a housing, clamping and connecting elements [3].

This technical solution is intended solely for attaching an optical cable of the type of eight, which is a power element and a fiberglass rod (core), and despite the structural similarity (both there is a housing, clamping and connecting elements) with the proposed technical solution it is almost impossible to use for fastening self-supporting insulated wires.

The applicant set himself the task of developing an anchor clamp that is simple in design and reliable during operation, making it impossible to spontaneously dismantle the rod from the housing when the wire is tensioned. The indicated positive practical result was achieved due to the combination of essential design features of the claimed anchor clamp presented in the following utility model formula: “anchor clamp for attaching self-supporting insulated wires of overhead power transmission lines, consisting of a housing of at least two wedges inserted into an open cut-out cases between which the wire is clamped and wedged without damage to the insulation, and a connecting element made in the form of a flexible cable with Fastening thereon arc thimble and stops at the ends, with the shoulders in the side walls of the housing are made curved grooves and sockets, which are inserted into the cable fixing guides made in the form of a rope attached to cylindrical sleeves or polyhedral; the ends of the flexible cable are fixed in cylindrical or multifaceted bushings by crimping; the bending angle of each groove made in the shoulders on the side walls of the housing is at least 22 °. "

The invention is illustrated by drawings, in which in FIG. 1 shows a General view of the inventive anchor clamp made in accordance with this utility model; in FIG. 2, a part of the housing with a curved groove and a stiffening rib of the housing is presented separately, as well as a cylindrical sleeve with a pressed-in anchor cable in FIG. one; in FIG. 2 - attachment point of a cylindrical sleeve with a crimped cable assembly of the anchor clamp in FIG. one.

The proposed anchor clamp for attaching self-supporting insulated wires of overhead power lines consists of a housing 1 made with an open cutout 2 and stiffeners 3, a clamping element in the form of, for example, two wedges 4, 5, between which a self-supporting insulated wire 6 of the line is clamped, and a connecting element, which is a loop of a flexible cable 7, located in the trough of the arc thimble 8. The relief of the wedges 4, 5 provides a reliable fixation of the wire 6 and prevents it from slipping out of the clamp.

In the shoulders 9, on the side walls of the housing 1, curved (C-shaped) grooves 10 and slots 11 are milled. When mounting, the ends of the loop of the flexible cable 7 of the connecting element are wound into the grooves 10, and cylindrical or polyhedral sleeves 12 are inserted into the slots 11, pressed one end into the ends of the cable 7, and the other end abutting the stiffeners 3 of the housing 1. The bending angle of the grooves 10 is at least 22 °.

The invention works as follows:

During installation, the ends of the loop of the flexible cable 7 of the clamping connecting element are bent at an angle of 22 °, corresponding to the angle of bending of the grooves 10, and wound into them, while the cylindrical or polyhedral bushes 12 pressed at the ends of the cable 7 enter, respectively, the socket 11. The ends of the cable 7 straightened and tightened to the stop of cylindrical or multifaceted bushings 12 in the slots 11 of the shoulders 9 on the housing 1. At the same time, the working position of the bushings 12 in the slots 11 of the shoulders 9 is reliably fixed due to the stop of the cylindrical or multifaceted bushings 12 in the ribs 3 and housing 1. Subsequently, the clamp is connected with a support (not shown) via line 8 arc thimbles.

The proposed anchor clamp for securing self-supporting insulated wires of overhead power lines is characterized by simplicity of design, reliability of securing the flexible cable loop in the case, which ultimately increases the operational reliability of securing the wires in the clamp, as well as the high adaptability of manufacturing the assembly and installation of the clamp. Currently, the production of CJSC “MZVA” has established serial production of the claimed anchor clamps and their delivery to overhead power lines

Information sources:

[one]. Description of the utility model for patent No. 123245 "Anchor clamp", H02G 7/08, claimed 06/07/2012, published 12/20/2012 Bull. Number 35.

[2]. Description of the utility model for patent No. 13521 "Anchor clamp", H02G 1/04, claimed 11/15/1999, published on 04/20/2000 Bull. No. 11.

[3]. Description of the invention to patent No. 2383979 "Anchoring clamp for optical cable of the type of eight", H02G 7/08, claimed 02.10.2009, published 03.10.2010 Bull. Number 7.

[four]. Description of the invention to patent No. 2389115 "Anchor bracket (Options)", H02G 7/02, F16L 3/10, filed March 18, 2009, published May 10, 2010 Bull. No. 13.

[5]. Description of the invention to patent No. 2391758 "Anchor bracket", H02G 7/02, F16L 3/10, filed April 15, 2009, published June 10, 2010 Bull. No. 16.

Claims (3)

1. Anchor clamp for attaching self-supporting insulated wires of overhead power lines, consisting of a housing of at least two wedges inserted into an open cutout of the housing, between which the wire is clamped and wedged without damage to the insulation, a connecting element made in the form of a flexible cable with fixed it has an arc thimble and limiters at the ends, while curved grooves and nests are made in the shoulders on the side walls of the housing, into which the cable restraints are inserted, made in ie mounted on a cylindrical or polyhedral cable bushings. 2. The clamp according to claim 1, in which the ends of the flexible cable are fixed in cylindrical or multifaceted bushings by crimping. 3. The clamp according to claim 1, in which the bending angle of each groove made in the shoulders on the side walls of the housing is at least 22 °.

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