CN202616432U - A copper-aluminum wire transition crimping clamp - Google Patents

Abstract

The utility model discloses a copper aluminium wire transition crimping fastener, including tubulose fastener body and the housing screw of setting on the fastener body, the housing screw pass through the screw hole with this body coupling of fastener, the tip of housing screw sets up the wiring clamp plate. The wire clamp body is made of silicon-magnesium-aluminum alloy, and the surface of the wire clamp body is coated with an electric power composite grease layer. This crimping clamp makes the effectual transitional coupling of copper, aluminium wire through the selection of material and the rational design of physique structure, has invariable and enough big contact pressure and the area of contact of maximize, can keep very low contact resistance for a long time, and overload capacity is strong. In the use, along with external environment and load condition's change, have stable contact performance to the connection between the wire, the surface of fastener body scribbles the electric power complex fat layer, and oxidation resistance and corrosion resistance are strong, have longer life, and non-maintaining is exempted from to overhaul, can used repeatedly many times, reduces the maintenance cost. The crimping clamp is convenient to install and stable and reliable in performance.

Description

A copper-aluminum wire transition crimping clamp

technical field

The utility model belongs to the technical field of electrical distribution equipment accessories, in particular to a copper-aluminum wire transition crimping clamp.

Background technique

At present, the connection between the aluminum wire on the low-voltage side of the distribution network transformer and the voltage copper wire of the transformer metering unit usually uses a crimping clamp consisting of a conductive connecting plate and compression screws located at both ends of the conductive connecting plate. When implementing wiring, the aluminum wire drawn from the low-voltage side of the distribution network transformer and the voltage copper wire of the transformer metering unit are respectively wound on the two compression screws by hand binding, and the aluminum wire and copper wire are separated by the compression screws. Press tight. Long-term practice shows that this crimping clamp adopts the hand-tied wire connection method. Although the installation and operation are convenient, it is too random, the crimping quality and reliability are poor, there are small wire crimping areas, poor contact, galvanic corrosion, and crimping components are easy Problems such as burning loss and falling off will lead to equipment operation and power supply failure, which will bring different degrees of economic losses to power companies and users; or after long-term use, the electric energy meter will show a loss of voltage, resulting in less or no metering, which will cause power metering and maintenance work. It has brought a lot of trouble and inconvenience, and also caused the loss of business electricity, which directly affects the line loss index of business assessment. Secondly, the crimping clips currently used are generally made of low-carbon steel materials. During long-term field use, they are easily rusted, corroded and peeled off due to wind, rain and sun, resulting in malfunctions in the connection and connection equipment, and overload Weak ability, poor conductive transition performance.

Utility model content

The purpose of this utility model is to provide a copper alloy that can overcome the defects in the prior art, has strong overload capacity, strong oxidation resistance and corrosion resistance, stable and reliable performance, and can effectively prevent the burning and falling off of wires and crimping components. Aluminum wire transition crimping clamp.

A copper-aluminum wire transition crimping clamp, comprising a tubular clamp body and a compression screw arranged on the clamp body, the compression screw is connected to the clamp body through a threaded hole, and the end of the compression screw Set the wiring clamp.

The clamp body is made of silicon-magnesium-aluminum alloy.

The surface of the clamp body is coated with an electric composite grease layer.

The clamp body adopts a special-shaped tubular structure.

The number of the pressing screws is at least two.

Arc-shaped grooves are arranged on the bottom side of the wiring pressing plate.

The copper-aluminum wire transition crimping clamp of the utility model can make the transition connection between the copper wire and the aluminum wire effective through the selection of the material and the rational design of the body structure, and has a constant and sufficiently large contact pressure and a maximized contact area. It can maintain very low contact resistance for a long time and has strong overload capacity. Moreover, during use, as the external environment and load conditions change, it has stable contact performance for the connection between the wires. In addition, the surface of the clamp body is coated with an electric composite grease layer, which has strong oxidation resistance and corrosion resistance. , has a long service life, maintenance-free, maintenance-free, can be reused many times, and reduces maintenance costs. The clamp is easy to install and has stable and reliable performance.

Description of drawings

Below in conjunction with accompanying drawing, the utility model will be further described:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of A-A in Fig. 1 .

Detailed ways:

As shown in Fig. 1 : the copper-aluminum wire transition crimping clamp of the present invention has a tubular clamp body 1, and at least two compression screws 2 are installed on the clamp body 1 through threaded holes. In the wire clamp body 1, there is a wiring pressing plate 4 in contact with the end of the pressing screw 2, which is used for pressing the copper and aluminum wires 5, 6. The bottom side of the wiring pressing plate 4 is provided with an arc-shaped groove 7. Make it have the largest envelope contact area with copper and aluminum conductors 5 and 6. The clamp body 1 is made of silicon-magnesium-aluminum alloy, which can further increase the crimping area between the clamp body and the copper and aluminum wires by utilizing the elasticity of the silicon-magnesium-aluminum alloy, and can maintain a constant contact pressure between the wire and the wire clamp for a long time , Constant and sufficiently large contact pressure and maximized contact surface can maintain very low contact resistance for a long time, enhance the overload capacity of the connection part, and form a stable pressure load on the wire at the same time. The surface of the clamp body 1 is coated with an electric composite grease layer 3, which has strong oxidation resistance and corrosion resistance, and has strong electrical conductivity, which can effectively prevent the oxidation and corrosion of the clamp body 1 and prolong the service life. And always maintain good connection conductivity and electrical properties. The electrical conductivity of the clamp body 1 made of silicon magnesium aluminum alloy material and the protective layer of the electric composite grease material makes the electrical conductivity of the connecting body composed of copper-aluminum wires 5 and 6 and the clamp body 1 effectively transition. The clip body 1 adopts a special-shaped tubular structure to make it more compact and ensure a larger contact area with the copper-aluminum conductors 5 and 6 .

The copper-aluminum wire transition crimping clamp of the utility model, through the selection of material and the rational design of the body structure, enables it to have stable contact performance for the connection between the wires during use as the external environment and load conditions change. , and maintenance-free, maintenance-free, reducing maintenance costs, can be reused many times, is an environmentally friendly and energy-saving product. When the crimping clamp is in use, use electrical tools to peel off the copper insulated connection point of the trunk line, and the stripping length is about 20-25mm; then connect one end of the aluminum wire with a length of about 35~40mm to the copper wire Carry out crimping packaging, the other end of the wire (aluminum wire) is connected to the input end of the clamp body, and the output end of the clamp body is connected to the one-phase voltage line (copper wire) of the electric energy meter. Then, use a wrench to tighten the compression bolts on the clamp body respectively, so that the compression bolts press the wiring pressure plate in the clamp body, so that the low-voltage side wire (aluminum wire) and the voltage wire (copper wire) can be effectively transition-connected That's it.

Claims (6)

1. A copper-aluminum wire transition crimping clamp, characterized in that: it comprises a tubular clamp body and a compression screw arranged on the clamp body, and the compression screw is connected to the clamp body through a threaded hole, so The end of the compression screw is provided with a wiring pressing plate. 2. The copper-aluminum wire transition crimping clamp according to claim 1, characterized in that: the clamp body is made of silicon-magnesium-aluminum alloy. 3. The copper-aluminum wire transition crimping clamp according to claim 1, characterized in that: the surface of the clamp body is coated with an electric composite grease layer. 4. The copper-aluminum wire transition crimping clamp according to claim 1, characterized in that: the clamp body adopts a special-shaped tubular structure. 5. The copper-aluminum wire transition crimping clamp according to claim 1, characterized in that: the number of said pressing screws is at least two. 6. The copper-aluminum wire transition crimping clamp according to claim 1, characterized in that: arc-shaped grooves are provided on the bottom side of the terminal pressing plate.

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