Common types of electric slip rings

Mofuron technology electric slip ring is made by rotating ( rotor ) And static ( Stator ) Electromechanical device composed of components . They allow signals and power to be transmitted from the rotor to the stator . However , More and more data , Especially high-speed or high channel count data , Through optical fiber and optical fiber slip ring , That is, the optical counterpart transmission of the slip ring . In the power transmission of a moving or rotating system , Electric slip rings are still essential . According to the brush type and mechanical structure of the slip ring , There are many kinds of slip rings . Each design is suitable for a particular application . Some people are more popular than others . We will discuss the advantages and disadvantages of each type in this article .

Wire brushing Technology

Brush wire is a device that conducts current to the moving parts of the slip ring . Moving parts are usually ring conductors . The following brush threads are common in the design of slip rings / Contact type / material . No single style material can solve all problems . Most manufacturers offer multiple material styles or mixtures of them in one device , To meet the challenges of complex needs in different industries .

Brush the ring ( agc )：

Graphite particles are dispersed in the matrix of silver . Silver is usually combined with graphite , Form a continuous high conductivity path , And it has low voltage drop . Graphite burns out due to arcing . Silver has antioxidant properties , It can keep the contact surface clean during shutdown . These properties make silver - Graphite brushes have good performance under high current density .

The shape of the brush pad is usually a small rectangle , The contact surface is cylindrical , The matching ring provides a perfect interface . The contact pressure comes from the compression spring on the elastic metal sheet or pad . The material of the pairing ring is usually silver . The cylindrical contact interface makes this design have a larger contact surface , It is a good choice for high current applications .

Filaments on the ring / Wire brush ：

Another option is a group of alloys to form a single wire or multi wire brush . The matching ring material is also an alloy . Monofilament / The contact surface between the wire brush and the matching ring is relatively small . To overcome this , The manufacturer usually forms an annular groove on the piston ring . It converts contact from a point to an arch , Greatly increase the contact surface . Even so , The current capacity is also relatively low ( Less than a few amperes ).

This kind of design cost is extremely low , Usually used for low power and signal transmission .

When multiple wires are combined into a bundle of brushes , Surface contact will greatly increase . It can transmit higher current . The annular groove not only provides a larger contact surface , And it also prevents the wire from deviating from the track . This structure with its low cost 、 The comprehensive benefits of high performance have been favored by many users in recent years . There are also reports of low wear debris generation and low maintenance .