How does wire and connector make the high-speed rail to fly up?

 

             January 8, Dalian University of Technology Faculty of Mechanical Engineering and Energy Materials Professor Li Tingju teamwork and business R & D - chromium zirconium copper alloy contact wire preparation technology in the country ran out of the Beijing-Shanghai high-speed rail 486.1 km / h, equivalent to 2010 the most advanced Boeing aircraft takeoff speed, the highest speed ran out, setting a world record in high-speed rail test operation.

          OCS train to take power by then, access to high-speed forward momentum. Catenary, that is, we see those wires hanging above the train 5 meters distance. But in fact, these wires may not seem so ordinary, high-speed rail system Catenary wire has a very high performance requirements, it is necessary to have a high strength, high conductivity, but also has a capable of carrying high current, high temperature, oxidation and corrosion-resistant properties. Train movements, the pantograph will be nearly 100 meters per second at an alarming rate of brushed catenary, that even if there is a moment during power interruption, the train speed will drop immediately. 

          Especially when the train speed close to 300 km catenary wire is decided to train sustainability a key factor in high-speed running. Only catenary line ride height, excellent electrical conductivity, the train will be able to achieve sustained strong momentum to achieve higher speeds. However, in the metal material science, the strength and electrical conductivity is precisely a contradiction, higher metal strength, but worse electrical conductivity; opposite conductivity higher strength worse. So something in the train conductor how to work it? Wire is used to link one end to the other end, so there must be a connector, the connector is a part of our electronic engineering technician regular contact. Its role is very simple: in between the circuit is blocked at the barrier or isolated circuits, bridge the communication gap, so that the stream flow of the circuit to achieve a predetermined function. Connectors are electronic devices indispensable component, observe current flow along the path, you will always find one or more connectors. Connector form and structure is changing, with different application object, frequency, power, and other application environments, there are a variety of different types of connectors. For example, the lighting on the court with the connector and the hard drive connector, and ignite the rocket connector is very different. But no matter what kind of connector, must ensure a continuous and smooth flow of current and reliable. It refers to, the connector is not limited to the electric current is turned on, the rapid development of photonics technology today, the fiber optic system, light is transmitted carrier signal, instead of ordinary glass and plastic in the circuit conductors, but the optical signal path is also used in connectors, their role and the same circuit connector.

Wires and connectors are how to link it? Some people say, above all holes ah, directly insert like, of course, is the case, however, the train's speed so fast, it is so simple to insert, you will not fall off? Yeah sure, because since you can directly insert so then you can also pull out is not it? If you enter the professional manufacturer, you should be able to see that we are using the crimping tool, then this is a kind of magical species of it?Usually, the metal is through a special connector to connect together. Wire stripping (usually stranded) inserted through the opening of the correct size connector, and crimper to tightly extrusion line. According to the type of connector, it might be attached to a metal plate consists of a single screw or bolt or just use connector itself to annex F thread, etc.

Get a good use of elaborate design fold fold need tools and crimp connectors, and later the specified production. These programs can be gained from precisetool.

The most widely used in metal processing. Crimping tool is usually used to repair the bullet shells, fast and lasting electrical connections, make sure the lid metal food cans, and many other applications. Because it can be a cold work technology, edge can also be used to form a strong bond between the workpiece and non-metallic components.