There may be many problems with slip rings during use. The following are some common problems and reasons:
Electrical performance problems
a. Excessive contact resistance: This may be caused by poor contact between the brush and the slip ring surface, such as severe brush wear, insufficient brush pressure, dirt or oxide layer on the slip ring surface. Excessive contact resistance will cause heat, increase energy loss, and may even cause unstable signal transmission or power transmission interruption.
b. Signal transmission interference: The electromagnetic compatibility design inside the slip ring is not good, which may cause mutual interference between signals. In addition, interference from the external electromagnetic environment may also affect the signal transmission quality of the slip ring, causing distortion and bit errors in the transmitted signal, which has a greater impact in communication, measurement and control systems with high signal quality requirements.
c. Degradation of insulation performance: Aging, damage, or erosion of pollutants such as moisture and dust by insulating materials will reduce the insulation performance of the slip ring. This may lead to safety hazards such as leakage and short circuit, affecting the normal operation of the equipment, and in severe cases even damaging the equipment or causing safety accidents.
Mechanical performance problems
a. Wear and loss: Long-term friction between the brush and the slip ring will cause wear of both. If the speed of the slip ring is too high, the load is too large, or the material of the brush is not suitable, the lubrication conditions are poor, etc., the wear process will be accelerated. Wear will reduce the conductivity of the slip ring, shorten the life of the brush, and require frequent replacement of parts, increasing maintenance costs.
b. Vibration and noise: The slip ring is not firmly installed, the rotor is unbalanced, the bearing is damaged, etc., which may cause the slip ring to vibrate and make noise during operation. Vibration will not only affect the stability and service life of the slip ring, but also have adverse effects on the surrounding equipment and environment. Noise will also cause noise pollution to the working environment.
c. Stuck or stuck: The inside of the slip ring may be stuck or stuck due to foreign matter entering, deformation of parts, poor lubrication, etc. This will prevent the rotating parts from rotating normally, causing equipment shutdown, affecting the normal production or work.
Environmental adaptability issues
a. The insulation performance of the material is reduced, the metal material expands and deforms, etc., which affects the normal operation of the slip ring. In a low temperature environment, the lubricating oil may become thicker, resulting in poor lubrication and increased friction loss.
b. Humidity and corrosion: In a humid environment, the slip ring is easily affected by moisture, resulting in reduced insulation performance and rust and corrosion of metal parts. If there are corrosive gases or liquids in the working environment, the corrosion process of the slip ring will be accelerated, the structure and performance of the slip ring will be damaged, and its service life will be shortened.
Installation and maintenance issues
a. Improper installation: During the installation of the slip ring, if the installation accuracy is not up to standard, such as excessive concentricity deviation, excessive axial movement, etc., the contact between the brush and the slip ring will be uneven, resulting in increased local wear and affecting the performance and life of the slip ring.
b. Untimely maintenance: The slip ring needs to be inspected, cleaned and maintained regularly. If the maintenance is not timely, dirt, dust and other impurities on the surface of the slip ring will accumulate, and the brush wear cannot be discovered and handled in time, which will easily cause various faults and reduce the reliability and stability of the slip ring.