What is a slip ring and how it works

Slip rings are electrical components that are responsible for connecting and transmitting energy and signals to rotating bodies. According to the transmission medium, slip rings are divided into electric slip rings, fluid slip rings, smooth rings, and can also be colloquially referred to as "rotary connection" or "rotary connection". Slip rings are usually installed in the center of rotation of the equipment, and are mainly composed of two parts: rotating and stationary.

The rotating part is called the "rotor" when it connects to the rotating structure of the device and rotates with it, and the energy source of the stationary part that connects the fixed structure of the device is called the "stator".

Slip rings, also known as rotary electrical interfaces, electrical rotary joints, can be used in any electrical system that requires unrestricted continuous rotation to transmit power and data signals from a fixed structure to a rotating structure.

A device that transmits electrical signals and electrical energy between the rotating parts of the antenna frame and the stationary parts by means of sliding or rolling contact, electrostatic coupling, or electromagnetic coupling of conductive parts. On the rotating parts are the driving elements, measuring elements and control elements, to which control signals and power must be supplied from the machine room. This requires a variety of slip ring assemblies to transmit signals and energy.

Some radars need to rotate more than 100 lines. According to the frequency of the transmitted signal, the slip ring assembly can be divided into: low-frequency slip ring, medium frequency slip ring and high-frequency rotating hinge.

Slip rings usually refer to only the first two. The electrical performance indicators of slip ring assemblies are: insulation resistance, contact resistance, dielectric strength and crosstalk.

For IF slip rings, shielding, impedance matching, noise voltage, etc. should also be considered because of the higher frequency. In terms of structural design, it is necessary to ensure reliable contact and ensure that all lines are continuously connected. Therefore, it is required that the material used in the brush has good conductivity, the pressure of the slip ring should be appropriate, the eccentricity and sloshing amount of the slip ring are small, the wear resistance is good, the friction torque is small, and it is easy to maintain.

Slip rings are the product of the demand in the process of modern industrial development, which is used for the effective and reliable electrical connection between two components that rotate relative to each other to ensure the transmission of electrical signals between the components. Conductive slip rings are also called collector rings, and can also be called collector rings, return rings, and adapters.

Wait a minute. It is mainly made of insulating materials.

It consists of a base body (insulating ring part), a sliding contact conductive surface (conductive ring part), an elastic material (brush filament), and other auxiliary components such as bearings, brackets, and dust covers. Among them, the brush filament adopts ***, which is in contact with the conductive ring of the conductive slip ring in the working process, and transmits the signal and current with the combination of the microgroove sliding of the conductive ring in the conductive slip ring and the elastic pressure of the brush filament. The conductive slip ring as a whole relies on the elasticity of the brush wire and the lap principle of the conductive ring, the rolling lap principle or sealing principle of the conductive slip ring, and the ingenious design of the movement structure and sealing structure between the conductive ring and the brush wire.

Precision conductive slip ring parts production and matching, reasonable material selection, etc., constitute a stable and reliable conductive slip ring communication system, which uses the sliding of the component conductive ring and the contact coupling of the brush filament.

On a fixed bracket, the rotating shaft drives the rotation, so that the electrical signal and electrical energy are continuously transmitted.

Slip rings are oil-impregnated bearings, and their main component is graphite, which is made by precision machining by injecting lubricants into porous graphite.

Slip rings are slippery, smooth rings.

Under the requirement that the rotating parts need to introduce power supply, the slip ring and brush form are fed, which is mostly seen in alternators and speed-regulating motors for lifting, and the principle is very intuitive.

The function of the conductive slip ring is to rotate and conduct electricity 360 degrees, in addition to the 360-degree rotation conduction of Senrip conductive ring, it can also be combined to transmit various signals, and can even be mixed with various media such as compressed air, hot oil, and gas. Simply put, a slip ring is a wire that can be rotated 360 degrees.

Slip rings are also called conductive slip rings, which can also be called collector rings, rotary joints, rotating electrical interfaces, industrial slip rings, collector rings, return rings, coils, commutators, adapters, conductive rings, and brushes. First of all, understand that the main structure of its conductive slip ring can rotate 360 degrees, and the design is required to ensure reliable contact and ensure that all lines are continuously connected. It is used in all electromechanical systems that require unlimited and multi-channel rotational power, data and signals.

A precision power transmission device that realizes the image, data signal and power transmission of two opposing rotating mechanisms. The new type of slip rings greatly simplifies the system structure and avoids sprains caused by the wires during rotation. And ensure reliable contact and all lines are connected.

Therefore, the conductivity of the materials used in the brush must be good, the pressure of the conductive slip ring must be appropriate, the eccentricity and shaking of the slip ring must be small, the wear resistance should be good, and the friction torque should be small, so that the product quality can be guaranteed.

Usually on the surface of the conductive ring also need to be plated with multiple layers of advanced substances, to reduce the impedance so that the metal body can be quickly turned on in an instant, extend the wear life of the slip ring and reduce the noise of electrical appliances and other advantages, so the conductive slip ring assembly is composed of: slip ring body, brush assembly, fixed bracket, co-core ball bearing and other important components, the design and manufacturing process of each major part will affect the wear life of the slip ring. The material of the conductive ring of the slip ring mandrel is usually made of copper, brass, silver or gold material, and the conductive ring is designed as a "V" ring in order to ensure that the brush is in full contact with the conductive ring of the slip ring.

Its internal brush assembly is made of alloy wire processing, brush materials are palladium, gold alloy or gold-plated wire brushes and copper graphite composite brushes, brush wires are by elastic pressure and "V" ring groove sliding contact, in order to transmit signal and current conduction, therefore, the conductivity of the materials used in the brush is required to be very good, the elastic pressure on the slip ring pressure should be appropriate, reduce the eccentricity and sloshing deviation of the slip ring, good wear resistance, small friction torque, easy to maintain. Also consider shielding, impedance matching, noise voltage, etc.