MXPA01003273A

MXPA01003273A - Connection for an overhead power line.

Info

Publication number: MXPA01003273A
Application number: MXPA01003273A
Authority: MX
Inventors: Kortelainen Veijo
Original assignee: Ensto Sekko Oy
Priority date: 2000-03-31
Filing date: 2001-03-29
Publication date: 2004-07-30
Also published as: HUP0101195A2; EP1139496A3; HU0101195D0; BR0101285A; FI20000738A0; RU2001108592A; CZ20011158A3; FI106994B; EP1139496A2; PL346456A1; NO20011632D0; ID29737A; HUP0101195A3; NO20011632L

Abstract

Connection for an overhead power line containing a clamp bolt or screw 8, 8' and at least three coupling plates 1, 2, 3 which can be pressed against each other with the clamp bolt or screw 8, 8'. The coupling plates 1, 2, 3 form between themselves two spaces for reception of the conduit on either side of the middle coupling plate 2. At least one coupling plate 2 between the other two plates 1, 3 has hollow metal coupling pieces with teeth extending into said spaces, which when the coupling plates are tightened with the clamp bolt or screw 8, 8', are forced through the line insulation, whereupon the coupling piece 10 forms an electrical coupling between the conductors lying either on or alongside each other in both spaces.

Description

CONNECTOR FOR A HIGH CABLE The invention relates to a connector or terminal for a raised cable, comprising a bolt or fastening screw and at least three connector blocks, which can be pressed by the bolt or fastening screw towards each other and connecting blocks providing between same two intermediate spaces for receiving wires on either side of the intermediate connector block. This type of connectors with three connector plates have been previously used in the process to connect aluminum and copper wires together. The connectors capable of drilling a wire insulation have included two blocks, between which is an individual intermediate space for the joint joining of an individual pair of wires in such a way that the connecting blocks establish an electrical contact between the wires. It is an object of the invention to provide a multi-purpose connector or terminal for a raised cable, which is applicable to the connection of elevated cables, both coated and uncoated, the metal parts of the connector exposed in the process of connecting coated wires that they are inactive in terms of voltage. In addition, the assembly of the invention must provide a connector that is capable of connecting more than one pair of conductors or wires. This object is achieved by means of a connector of the invention based on the characteristic features set forth in appended claim 1. The non-independent claims describe preferred embodiments of the invention with respect to various applications. A few exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings, in which: Figures 1 and 2 show a connector according to a first embodiment of the invention in side views from different directions and in partial section; Figures 3 and 4 show a connector according to a second embodiment of the invention in side views from different sections and in partial section; Figures 5 and 6 show a connector according to a third embodiment of the invention in side views from different sections and in partial section; Figures 7 and 8 show a connector according to a fourth embodiment of the invention in side views from different sections and in partial section; Figures 9 and 10 show a connector according to a fifth embodiment of the invention in side views from different sections and in partial section; Figures 11 and 12 show a connector according to a sixth embodiment of the invention in side views from different sections and in partial section; and Figures 13, 14 and 15 show a connector according to a seventh embodiment of the invention in side views from different sections and in partial section. In several embodiments, functionally identical components are designed with the same reference numbers, although these components may be structurally different from each other. This applies especially to the metal connecting pieces 10, which in the embodiments of FIGS. 1, 5 and 9 are short in the direction of the wires and are established in a plurality thereof in succession in the direction of the wires, the separate connecting pieces 10 which are joined together with a tie strip 11 which can be made of molded plastics or soft metal, with the connecting pieces 10 embedded therein. In the embodiments of Figures 3, 7 and 11, the connecting pieces 10 are provided in the direction of the wires with jagged, short edges a plurality of which are established in succession in the direction of the wires. The embodiments of Figures 1-10 comprise three connecting blocks or connecting plates 1, 2, 3 which can be pressed together by means of a fastening bolt 8 or a fastening screw 8 'extending through these blocks or plates. The connecting blocks 12, 3 are preferably made of an insulating material (hard plastic) and placed between the press plates 6, 7 a stack of blocks constituted by the successive connector blocks 1, 2, 3. The plates 6, 7 of Press can be made of a metal or hard plastic. If they are made of hard plastic, the press plates 6 and 7 can be manufactured in a single piece with the outer connecting blocks 1 and 3. The connecting blocks 1, 2, 3 constitute between these two intermediate spaces for receiving wires on either side of the intermediate connector block 2. the intermediate connector block 2 is provided with one or more metal connection pieces 10, which extend through the block 2 in a direction perpendicular to this. The teeth or serrated edges of the connecting piece 10 extend in the wire receiving channels present in the interspaces at a distance sufficient for the teeth to penetrate through the insulation of the wire as the connecting blocks 1-3 are clamped between yes. In this way, the connecting pieces 10 establish an electrical connection between two wires in the upper part of one another. In the embodiments of Figures 1-4, the connector is only proposed for connecting wires. In the case of Figures 1 and 2, the outer connector blocks 1, .3 are coupled with hinge links 9 to the intermediate connector block 2. In the embodiment of Figures 3 and 4, the outer connector blocks 1, 3 are coupled each other with a hinge link 9 '. In addition, this embodiment has its outer connecting blocks 1, 3 provided with connecting pieces 12 with toothed edges, which are interlaced by means of a wire or conductor 14.

In the embodiments of Figures 5-10, each intermediate piece between the connecting blocks 1, 2, 3 are provided with receiving depressions for two wires, that is, the connector is designed for two pairs of wires. The intermediate connecting block 2 is provided with metal connecting pieces 10 on both sides of the clamping bolt 8 or the clamping screw 8 '. Each intermediate space is provided with two wires. The embodiment of Figures 5 and 6 further illustrates on the right hand side of Figure 5 that the outer connector blocks 1, 3 are also provided with connection pieces 12 / with jagged edges, interlaced by means of a wire assembly 14 '. In the embodiment of Figures 3, 4, as well as Figures 7 and 8, the connecting metal parts 10 are surrounded by a pack 13 or 13"teeth of the connecting pieces protruding therefrom. The packages 13, 13"are compressed against the insulation of the conductor of the connected wires since the teeth of the connection pieces 10 have perforated the insulation of the conductor. The result will be a watertight union. Figures 7 and 8 depict the use of a moment screw fitted with a head 8"for the time being to ensure proper clamping. The embodiment of Figures 11 and 12 differs from those described above, mainly in the sense that the number of connecting blocks 1, 2, 3, 4, 5 is five and these are stacked one on top of the other, the connector that It works as a union for four pairs of wires. For this, two connecting blocks 2 and 4 are provided with the metal connecting pieces 10 on each side of the fastening bolt 8. The embodiment of Figures 9 and 10 differs from the others in that the clamping bolt is replaced with a clamping screw 8 ', which engages a threaded hole extending through a press plate 7 and a bar 7 '' adapted for this. The number of bolts or fastening screw 8, 8 'is typically one or two. In terms of its structural details, the connector is not limited to the above example modes. For example, the metal connecting pieces 10 may be in the form of screws having high and sharp threaded edges. The connecting blocks 2 and 4 are provided with threaded holes of lateral opening, through which the screws inside the block can be screwed laterally, the edges of the rocks of the screws that cut through the insulation of the conductor and establish a connection between the wires present on the sides of the blocks 2, 4. The mode shown in Figures 13-15 differs from those shown above in the sense that there are metal pieces 15, 16 and 15, 16 'connecting laterally extending of the blocks 1, 2, 3 between adjacent receiving depressions, the connecting pieces that establish an electrical connection each time between the two wires present in the same intermediate space. In the illustrated case, the intermediate connector block 2 is provided on either side thereof with a single connection piece 16, 16 'and the outer connector blocks 1, 3 are also provided with connection pieces 15, 15' on the sides internal of them. The conductors included in a pair of conductors present in the upper intermediate space on either side of the bolt 8 will be connected to each other by means of connection pieces 15 and 16. The conductors or wires present in the lower intermediate space on each side of the screw 8 will be connected to each other by means of the connecting pieces 16 'and 15'. The ends of the connecting pieces are provided with teeth that pierce through wire insulation. In the illustrated case, the conductors or wires of each pair of conductors will be connected to each other each time by means of two connecting pieces. The lower connecting pieces 15 ', 16' are enclosed by a package 17, from which the teeth of the connection pieces protrude and which is compressed against the wire insulation surface around the joint to establish a water-tight connection. Naturally, the respective packages 17 can also be arranged around the connection pieces 15, 16, upper. The connecting blocks 1, 2, 3 are provided with receiving depressions for the connecting pieces to retain the connection pieces in their position. Figure 13 shows the squares 18, 19 present on one side of the connector as extensions for the wires to be connected to protect the free ends of the wires extending a small distance from the joint. Figure 15 illustrates the manner of use of a connector of the invention to also interconnect wires or conductors of different diameters. The outer connector blocks 1 and 3 are capable of tilting by virtue of an arched design of the outer contours thereof, which corresponds to the arched design of the mating surfaces of the press plates 6 'and 7'. Figure 14 shows springs 20 present between the connector blocks 1, 2, 3 to force the connector blocks to be separated in order to keep the intermediate spaces open for a convenient insertion of the wires. The springs 20 are preferably spiral springs placed around the screw 8. In this embodiment, in the same way as in Figures 9 and 10.1a, the press plate 7 'also carries a correspondingly designed bar 7"which is designed to provided with a threaded hole for the holding screw 8. For example, the number of connectors required to connect the four connectors of a three-phase line is only two, whereas in the past the required number of these connectors had been four.

Claims

CLAIMS 1. A connector for a raised cable, comprising a bolt or fastening screw and at least three connector blocks, which can be pressed by the bolt or clamping screw, each other, and the connecting blocks provide between them two spaces intermediates for receiving wires on either side of the intermediate connector block, characterized in that at least one connector block, which is between the other two connector blocks, is provided with one or more metal connection pieces, which extend through it in one direction perpendicular to the block and that is provided with teeth protruding into the intermediate spaces, the teeth, as a result of the compression of the connector blocks by means of the bolt or clamping screw, penetrate through the wire insulation allowing a piece of connection establish an electrical connection between the wires. A connector according to claim 1, characterized in that the outer connector blocks are provided with connecting pieces with toothed edges which are interconnected by means of a wire or conductor. 3. A connector according to claim 1 or 2, characterized in that the outer connector blocks are connected by a hinge joint to the intermediate connector block or to each other. A connector according to claim 1, characterized in that each interspace between the connector blocks is provided with receiving depressions for two wires, and that at least one connector block is provided with the metal connection parts on either side of the bolt or screw of your session. A connector according to claim 1 or 4, characterized in that at least two connector blocks are provided with the metal connection pieces on each side of the fastening bolt or bolt, and that there are five stacking connector blocks one on top on the other, the connector that functions as a connector for four pairs of wires. 6. A connector according to any of claims 1-5, characterized in that the intermediate pieces are provided with a number of successive, short, jagged edges in the direction of the wires. A connector according to any of claims 1-5, characterized in that the intermediate pieces are short in the direction of the wires and a number thereof are placed in succession in the direction of the wires, and that the individual pieces of connection are linked together with a tie-down strap. 8. A connector according to any of claims 1-6, characterized in that the metal connection parts are screws provided with a high and sharp threaded edge, which can be screwed laterally of the connector block inside the block, the jagged edges that cut to through wire insulation and that establish an electrical connection between the wires present in. the opposite sides of the block. A connector according to any of claims 1-8, characterized in that the connector blocks are made of an insulating material and a stack of blocks constituted by successive connecting blocks is placed on the metal press plates. A connector according to any of claims 1-9, characterized in that the metal connection pieces are surrounded by gaskets, from which the teeth of the connecting pieces emerge and which are pressed against the wire insulation of the wires interconnected after the teeth of the connecting pieces have perforated the wire insulation. 11. A connector for an aerial cable, comprising a bolt or fastening screw and at least three connector blocks, which can be pressed by the bolt or fastening screw toward each other and the connector blocks provide between them two intermediate spaces for receive wires on either side of the intermediate connector blockcharacterized in that each interspace between the connector blocks is provided with receiving depressions for two wires on either side of the fastening bolt or screw, and that the intermediate connector block is provided on either side thereof and / or the outer connector blocks are they provide on the internal sides thereof with metal connecting pieces, which extend between the receiving depressions which are adjacent to each other in the lateral direction of the blocks and which have both ends thereof, equipped with wire insulation drilling teeth , the connecting pieces establish an electrical connection between the wires included in the pairs of wires present in each intermediate space. 12. A connector according to any of claims 1-11, characterized in that the intermediate spaces are kept open by means of springs placed between the connector blocks. A connector for an aerial cable, comprising a fastening bolt (8, 8 ') and at least three connector blocks (1, 2, 3), which can be pressed by the bolt (8, 8') of fastening one towards another. The connecting blocks (1, 2, 3) provide between them two intermediate spaces for receiving wires on either side of the intermediate connector block (2). At least one connector block (2), which is between the other two connector blocks (1, 3), has embedded metal connecting pieces provided with protruding teeth in the intermediate spaces, teeth that, as a result of the compression of the connecting blocks by means of the clamping bolt or screw (8, 8 '), penetrate through the wire insulation allowing a connection piece (10) to establish an electrical connection between superimposed or parallel wires in both intermediate spaces.