CN202678548U

CN202678548U - Lap-joint type copper-aluminum transition wire clip

Info

Publication number: CN202678548U
Application number: CN 201220243900
Authority: CN
Inventors: 许小飞; 鲍春禾
Original assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Maintenance Branch of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2012-05-28
Filing date: 2012-05-28
Publication date: 2013-01-16
Anticipated expiration: 2022-05-28

Abstract

The utility model discloses a lap-joint type copper-aluminum transition wire clip, which comprises an apparatus clamping part and a lead wire clamping part. The apparatus clamping part and the lead wire clamping part are transited through lap joint, and fixed by welding. The copper-aluminum transition wire clip provided by the utility model has the advantages of simple structure and convenient application. The lap-joint structure substitutes for the conventional butt-joint structure, which effectively increases a copper-aluminum transition area, reduces transition resistance, and alleviates heat generating phenomenon. Meanwhile, the stress of the wire clip during application is changed, and the mechanical strength of the wire clip is improved. By the adoption of the advanced brazing technique, the welding quality is improved.

Description

A kind of lap jointing type copper-aluminium transition wire clip

Technical field

The utility model relates to a kind of wire clamp that is fixedly connected with wire and other primary equipments (for example isolating switch), relates in particular to a kind of lap jointing type copper-aluminium transition wire clip.

Background technology

Wire clamp is one of parts very common in the electrical network primary equipment, is mainly bearing the effect that is fixedly connected with wire and other primary equipments (for example isolating switch).The wire clamp that uses at present mainly comprises copper aluminium docking wire clamp, fine aluminium/copper cash folder; Because there are the shortcomings such as transition resistance is large, easy overheated in fine aluminium/copper cash folder than copper aluminium docking wire clamp, the scope of application is relatively less, and what mostly use is copper aluminium docking wire clamp.Copper aluminium docking wire clamp general structure as shown in Figure 1 and Figure 2, the equipment holder 1 and the wire clamp gripping member 2 that is connected wire 6 that mainly comprise connection device terminal block 4, because the material of equipment terminal block 4 is copper, the material of wire 6 is aluminium, thereby equipment holder 1 is copper material, wire clamp gripping member 2 is aluminium material, docks transition by end face between equipment holder 1 and the wire clamp gripping member 2, and fixes by welding manner; Mainly there is following defective in this structure:

1, because the interim form between equipment holder 1 and the wire clamp gripping member 2 is docking, and contact area is little, interface resistance is large, temperature rise is large, easily heating;

2, because the Action of Gravity Field of wire, so therefore all bearing tension or shearing of the transition interface of equipment holder 1 and wire clamp gripping member 2 again can exist risk of breakage at the transition interface place of equipment holder 1 and wire clamp gripping member 2;

3, the transition interface of equipment holder 1 and wire clamp gripping member 2 adopts friction welding (FW) or flash welding mode to carry out the bad mechanical strength of weld more.

In sum, there are the shortcomings such as mechanical strength is low in copper aluminium docking wire clamp, there are the shortcomings such as transition resistance is large, easy overheated in fine aluminium/copper cash folder, and these shortcomings often expose in the production process of reality, overheated even occured that wire clamp bears high temperature, pulling force etc. and the accident of fracture such as using infrared radiation thermometer just can often measure wire clamp, especially meeting in the larger situation of this network load of kurtosis summer, causing great threat for the safe and stable operation of electrical network.Therefore study the novel wire clamp that a kind of mechanical strength is large, transition resistance is little, will play very positive effect to the stable operation of electrical network, the aspects such as reliability of raising electrical network.

The utility model content

Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of lap jointing type copper-aluminium transition wire clip, improves the defective that existing docking type copper-aluminium transition wire clip easily generates heat, mechanical strength is low.

Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of lap jointing type copper-aluminium transition wire clip comprises equipment holder and wire clamp gripping member, passes through the overlap joint transition between described equipment holder and the wire clamp gripping member, and fixes by welding manner.

Owing to adopted the overlap joint transitional structure, increased contact area, reduced transition resistance, reduced the possibility of generating heat; Overlap simultaneously transitional structure, the shearing action of having avoided transition interface to bear has reduced the transition interface place and has had risk of breakage.Contacted can all be designed to the plane between equipment holder and the wire clamp gripping member, also can be designed to the suitable curved surface of shape, to increase contact area.

Preferably, be welded and fixed by brazing mode between described equipment holder and the wire clamp gripping member; This is because soldering processes are advanced, steady quality, is particularly useful for large electric current, heavy in section gold utensil, and just face is bright and clean, air-tightness good for the joint of soldering, shape and size are stable.

In the existing wire clamp, general fixing by securing member (such as bolt, nut structure) between general device terminal block and the equipment holder, owing to adopted the overlap joint transient mode between equipment holder and the wire clamp gripping member, therefore, can design securing member simultaneously fastening apparatus terminal block, equipment holder and wire clamp gripping member, to improve the mechanical strength of wire clamp.

Beneficial effect: the lap jointing type copper-aluminium transition wire clip that the utility model provides, simple in structure, easy to use, traditional docking structure is improved as bridging arrangement, effectively increase the copper-aluminium transition area, reduced transition resistance, slowed down fever phenomenon; Change simultaneously stressed in use procedure of wire clamp, improved the mechanical strength of wire clamp; And adopted advanced soldering processes, improved welding quality.

Description of drawings

Fig. 1 for existing wire clamp in use face the sectional structure schematic diagram;

Fig. 2 is the structural representation of looking up of existing wire clamp;

Fig. 3 be the utility model in use face the sectional structure schematic diagram;

Fig. 4 is the structural representation of looking up of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Be a kind of lap jointing type copper-aluminium transition wire clip as shown in Figure 3, Figure 4, the equipment holder 1 and the wire clamp gripping member 2 that is connected wire 6 that comprise connection device terminal block 4, pass through the overlap joint transition between described equipment holder 1 and the wire clamp gripping member 2, and be welded and fixed by brazing mode; Overlap is all the square shape between equipment holder 1 and the wire clamp gripping member 2, and is during use, fixing by securing member 5 machineries between equipment terminal block 4, equipment holder 1 and the wire clamp gripping member 2.

Compare Fig. 1, Fig. 2, traditional transition interface 3 is end face only, and the transition interface 3 of Fig. 3, Fig. 4 is the whole upper side of equipment holder 1, area has increased 5 to 7 times.

The above only is preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. a lap jointing type copper-aluminium transition wire clip comprises equipment holder (1) and wire clamp gripping member (2), it is characterized in that: pass through the overlap joint transition between described equipment holder (1) and the wire clamp gripping member (2), and fix by welding manner.

2. lap jointing type copper-aluminium transition wire clip according to claim 1 is characterized in that: be welded and fixed by brazing mode between described equipment holder (1) and the wire clamp gripping member (2).

3. lap jointing type copper-aluminium transition wire clip according to claim 1 is characterized in that: fixing by securing member (5) machinery between described equipment terminal block, equipment holder (1) and the wire clamp gripping member (2).