CN201015962Y

CN201015962Y - Strain clamp for cuprum and copper alloy wires cross

Info

Publication number: CN201015962Y
Application number: CNU200720103681XU
Authority: CN
Inventors: 吴宇; 马跃
Original assignee: BEIJING PARRPU LINE COLORING EQUIPMENT CO LTD
Current assignee: BEIJING PARRPU LINE COLORING EQUIPMENT CO LTD
Priority date: 2007-02-28
Filing date: 2007-02-28
Publication date: 2008-02-06
Anticipated expiration: 2017-02-28

Abstract

The utility model discloses a strain clamp for cooper or cooper alloy twisted wire. The strain clamp includes a pre-twisted wire set and a heart-shaped circle. The pre-twisted wire set includes a plurality of pre-twisted wires which are connected with each other through agglutination and wholly bent into a U shape, with the two ends taking the shape of a spiral pipe through even and whole twisting. The heart-shaped circle is provided with a U-shaped groove whose bottom is connected with a containing groove which partially takes shape of a circle. The pre-twisted wire set is arranged in the containing groove of the heart-shaped circle. The utility model is convenient in use, and bearing force during the connection with the twisted wire is dispersed on a relatively long twisted wire; besides, the wire clamp is made by cooper alloy wire which has high tensile strength and fatigue resistance, which guarantees installation strength and avoids electric corrosion with the twisted wire so that the service life of the twisted wire is prolonged and the reliability in performance of the force bearing wire is improved.

Description

Copper and copper-alloy stranded conductor strain clamp

Technical field

The utility model relates to the strain insulator anchor clamps of using on a kind of railway catenary copper and the copper-alloy stranded conductor.

Background technology

The electrified railway catenary also needs transmission current when bearing contact system tension force, catenary working tension height, and vibration in service is strong, is subjected to fatigue stress big, and therefore existing gold utensil can not satisfy operating needs.

The utility model content

At the problem that prior art exists, the purpose of this utility model is to provide a kind of intensity height, and anti-vibration, anti-fatigue performance are good, catenary copper easy to use and copper-alloy stranded conductor strain clamp.

For achieving the above object, technical solution of the present utility model is:

A kind of copper and copper-alloy stranded conductor strain clamp comprise preformed armor rods group and thimble; Described preformed armor rods group comprises some preformed armor rodses, bonding is fixing between each preformed armor rods, preformed armor rods group integral body is bent into the U-shaped of symmetry, according to its section form, reach the free section of joining with two ends at the bottom of the U-shaped at the bottom of can being divided into U-shaped, wherein the preformed armor rods group is wound in the twisted wire shape at U-shaped bottom branch, in two free section parts, each root preformed armor rods in the preformed armor rods group at first is arranged in a row, and then integral body is wound in helix; Have a U-lag on the described thimble, be provided with a mounting hole that vertically runs through the two side near its upper edge on this U-lag two side, U-lag two bottom sides opening extends away from the curved symmetry of described mounting hole direction from two side direction respectively, thereby form an arc and push up the holding tank that the integral body that is positioned at U-lag bottom centre is the part annular, the axis normal of this plane, holding tank place and described mounting hole; Described preformed armor rods group is sleeved at the bottom of by its U-shaped in the holding tank on the described thimble, two free sections of preformed armor rods group are to extending back to thimble U-lag opening direction, the line footpath of the preformed armor rods in the preformed armor rods group, the length that reaches free section and the specification of bonded assembly copper or copper-alloy stranded conductor of wanting match, the internal diameter of the free section of helix is slightly less than the external diameter of bonded assembly copper or the copper-alloy stranded conductor wanted, and all the hand of spiral with twisted wire to be connected is identical for the hand of spiral of two free sections on the preformed armor rods group.

Further, the preformed armor rods in the described preformed armor rods group is made by Cu alloy material.

Further, the radially inboard surface of the free section of described preformed armor rods group two helix all is bonded with copper alloy conduction sand.

The utility model catenary copper and copper-alloy stranded conductor are not only easy to use with strain clamp, and be dispersed on one section long twisted wire with the stress that is connected between the twisted wire, in addition, the wire clamp material is the copper alloy silk with high-tensile and anti-fatigue performance, after the installation, both guaranteed installation strength, simultaneously also not can with twisted wire generation electrocorrosion, prolong the service life of twisted wire, improve the catenary reliability of operation.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of preformed armor rods group shown in the sequence number 2 among Fig. 1;

Fig. 3 is an A-A view among Fig. 2;

Fig. 4 is a thimble front view shown in the sequence number 1 among Fig. 1;

Fig. 5 is the thimble birds-eye view;

Fig. 6 is a B-B view among Fig. 4;

Fig. 7 is the utility model running condition scheme drawing.

The specific embodiment:

Specify the utility model below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model copper and copper-alloy stranded conductor strain clamp, comprise thimble 1 and preformed armor rods group 2, preformed armor rods group 2 is sleeved in the holding tank that is provided with on the thimble, thus constitute one by thimble 1 for the strain clamp that links to each other with outside support, 2 confessions of preformed armor rods group link to each other with twisted wire to be tensioned.

As Fig. 2, shown in Figure 3, preformed armor rods group 2 is made by some preformed armor rodses 24, the preformed armor rods group comprises 21 and two free section 22 two parts at the bottom of the U-shaped on the whole, each preformed armor rods 24 of 21 parts is wound in the twisted wire form at the bottom of the U-shaped, each preformed armor rods 24 of free section 22 parts at first is arranged in a row, and then integral body is wound in helix.Bonding is fixing mutually between each preformed armor rods 24 of 21 partial sums, two free section 22 parts at the bottom of the U-shaped.The radially inboard surface of the free section 22 of helix also is bonded with copper alloy conduction layer of sand 23.

Shown in Fig. 4-6, have a U-lag 11 on the thimble 1, be provided with a mounting hole 12 that vertically runs through the two side near its upper edge on these U-lag 11 two sides, U-lag bottom 13 both-side openings extend away from the curved symmetry of mounting hole 12 directions from two side direction respectively, thereby form an arc and push up the holding tank 14 that the integral body that is positioned at 13 centers, U-lag bottom is the part annular, the axis normal of this holding tank plane, 14 place and mounting hole 12, the shape of 21 parts is complementary at the bottom of the U-shaped of the shape of holding tank 14 and preformed armor rods group 2.

Preformed armor rods group 2 by its U-shaped at the bottom of 21 parts be sleeved in the holding tank 14 on the thimble 1, two free sections 22 of preformed armor rods group 2 are to extending back to thimble U-lag 11 opening directions.

In order to guarantee reliably to be connected between preformed armor rods group 2 and the twisted wire to be tensioned, the line footpath of the preformed armor rods 24 in the preformed armor rods group 2, the internal diameter and the length thereof of the free section 22 of helix all will be complementary with twisted wire 3 to be tensioned, wherein the internal diameter outline of the free section 22 of helix is less than the external diameter of twisted wire 3, and the hand of spiral of two free sections 22 is identical with the hand of spiral of twisted wire 3 to be tensioned on the preformed armor rods group 2 simultaneously.

As shown in Figure 7, the utility model strain clamp in use, one end links to each other with the outside support (not shown) by the bolt or the bearing pin 15 of thimble 1 and upward installation thereof, the other end links to each other with twisted wire 3 by preformed armor rods group 2, two free sections 22 are wrapped on the twisted wire 3 on the preformed armor rods group 2, twisted wire 3 is wrapped and the enough grip forces of twisted pair wire 3 generations, to guarantee effective stretch-draw of twisted pair wire 3.Behind the radially inboard surface of the free section 22 of preformed armor rods group helix bonding layer of copper alloy conductive sand 23, can increase the friction coefficient between preformed armor rods group 2 and the twisted wire 3, thereby improve the grip force of twisted pair wire 3.

Claims

1. copper and copper-alloy stranded conductor strain clamp is characterized in that, comprise preformed armor rods group and thimble; Described preformed armor rods group comprises some preformed armor rodses, bonding is fixing between each preformed armor rods, preformed armor rods group integral body is bent into the U-shaped of symmetry, according to its section form, reach the free section of joining with two ends at the bottom of the U-shaped at the bottom of can being divided into U-shaped, wherein the preformed armor rods group is wound in the twisted wire shape at U-shaped bottom branch, in two free section parts, each root preformed armor rods in the preformed armor rods group at first is arranged in a row, and then integral body is wound in helix; Have a U-lag on the described thimble, be provided with a mounting hole that vertically runs through the two side near its upper edge on this U-lag two side, U-lag two bottom sides opening extends away from the curved symmetry of described mounting hole direction from two side direction respectively, thereby form an arc and push up the holding tank that the integral body that is positioned at U-lag bottom centre is the part annular, the axis normal of this plane, holding tank place and described mounting hole; Described preformed armor rods group is sleeved at the bottom of by its U-shaped in the holding tank on the described thimble, two free sections of preformed armor rods group are to extending back to thimble U-lag opening direction, the line footpath of the preformed armor rods in the preformed armor rods group, the length that reaches free section and the specification of bonded assembly copper or copper-alloy stranded conductor of wanting match, the internal diameter of the free section of helix is slightly less than the external diameter of bonded assembly copper or the copper-alloy stranded conductor wanted, and all the hand of spiral with twisted wire to be connected is identical for the hand of spiral of two free sections on the preformed armor rods group.

2. copper as claimed in claim 1 and copper-alloy stranded conductor strain clamp is characterized in that, the preformed armor rods in the described preformed armor rods group is made by Cu alloy material.

3. copper as claimed in claim 1 and copper-alloy stranded conductor strain clamp is characterized in that, the radially inboard surface of the free section of described preformed armor rods group two helix all is bonded with copper alloy conduction sand.