RU123242U1 - CONNECTING CLAMP FOR WIRES WITH COMPOSITE CORE - Google Patents

Abstract

Connecting clamp for wires with a composite core, containing an electrically conductive housing, a turnbuckle and two fastening units, each of which contains a tapered collet for a composite core, a steel sleeve with a hole for a tapered collet and a thrust pin made with the possibility of threaded connections in the opposite direction with the corresponding sleeve and a turnbuckle, and the body is made with the possibility of crimping it through electrically conductive inserts on the conductive layers of the wires to be connected.

Description

Technical field

The utility model relates to the field of electric power and can be used on overhead power lines to connect aluminum wires to a composite core.

State of the art

Known, selected as a prototype, a connecting clip for the wires of an overhead power line, comprising a housing, and a steel sleeve housed in the housing under the cores of the connected wires. The casing in the prototype is made in the form of a power coil from steel wires glued with a compound [RU 2272343].

In the prototype, the steel cores of the wires are inserted from two sides into the steel sleeve, and their conductive wires are connected on the surface of the sleeve.

The disadvantage of the prototype clamp is the fragility and unreliability of fastening the connected wires with composite cores in it, which, unlike steel cores, do not accept bending and compressive loads and can be deformed when crimping the sleeve. Local deformation that occurs in the composite core destroys its roving (glass filaments), contributing to damage to the wire.

Utility Model Essence

The technical result of the utility model is to increase the uniformity of the distribution of mechanical stress on the surfaces of the cores of the connected wires and, therefore, reduce the deforming effects on the cores.

The subject of a utility model is a connecting clamp for wires with a composite core, comprising an electrically conductive housing, a shrink disk and two fasteners, each of which contains a conical collet for the composite core, a steel sleeve with a conical collet hole and a thrust pin made with the possibility of threaded connections of the opposite directions with the corresponding sleeve and shrink sleeve, and the housing is made with the possibility of crimping it through conductive inserts on conductive coils of soy inyaemyh wires.

Brief Description of the Drawings

The essence of the utility model is illustrated by drawings, which show: in Fig. 1 is a general view of the clamp in disassembled state, in Fig. 2 is a clamp during installation of composite cores, in Fig. 3 is a complete assembly after mounting and crimping the housing.

Implementation of a utility model, taking into account its development

The clamp includes: an electrically conductive housing 1, a shrink sleeve 2 and two fastening nodes, each of which contains a conical collet 3 for a composite core 4, a steel sleeve 5 with an opening for a collet 3 and a thrust pin 6 made with the possibility of threaded connections in the opposite direction with the corresponding sleeve 5 and the coupling 2. The directions of the threaded connections of the studs 6 with the coupling 2 are also opposite. The housing 1 is made with the possibility of crimping it through electrically conductive inserts 7 on conductive wires 8 of the connected wires.

On the collet 3, four equidistant longitudinal cuts are made from the wide and narrow end, while the cuts on the opposite ends of the collet 3 are offset relative to each other.

Mount the clamp as follows.

The ends of the composite cores 4 wires, cleaned of the cove 8, are pulled through the bushings 5 (one of them is pulled through the housing 1) and inserted into the inner cavity of the collet 3. After that, the collet 3 with a narrow end together with the ends of the cores 4 are placed in the corresponding conical holes of the bushings 5. In the open ends of the bushings 5 are thrust studs 6.

The ends of the cores 4 are clamped by transferring pressure from the stud 6 to the collet 3, while screwing the stud 6 through the thread into the sleeve 5 with a normalized moment.

A coupling 2 is screwed onto both studs 6, which tightens the two studs 6 and, accordingly, the ends of the cores 4 of the connected wires. The above ratios of the directions of threaded connections provide retraction without unscrewing the studs 6 from the bushings 5, i.e. the possibility of technological assembly of the clamp.

The housing 1 is pushed onto the bushings 5 and the coupling 2 and is pressed onto the rods 8.

For reliable contact of each conductive coil 8 of the connected wires with the housing 1 near the place of compression, conductive inserts 7 are installed.

Pressure testing of the housing 1 is carried out in two places on the electrically conductive wires 8 of the connected wires (near the inserts 7). In this case, the deforming forces of the crimping directly on the composite core 4 do not act. The compressive cores 4 are evenly distributed over the surfaces 8, which are free of coils, covered by collets 3. When crimping the housing 1 on coils 8, the load on the core 4 is also distributed because it is transmitted through aluminum coils 8.

Claims (1)

A connecting clamp for wires with a composite core, comprising an electrically conductive housing, a shrink disk and two mounting units, each of which contains a conical collet for the composite core, a steel sleeve with an opening for the conical collet and a thrust pin made with the possibility of threaded connections of the opposite direction with the corresponding sleeve and a shrink sleeve, and the housing is made with the possibility of crimping it through electrically conductive inserts on conductive layers of connected wires.