Where is the throttle conductive ring of Sany crane?

The conductive ring of the throttle of Sany crane is installed on the rotating center of the crane. The conductive ring is especially suitable for situations that need infinite continuous or intermittent rotation and need to transmit power or data from a fixed position to a rotating position. Conductive rings are also called slip rings, or wire rotary joints, rotary electrical interfaces, slip rings, slip rings, return rings, coils, commutators and adapters. The conductive ring can improve the system by simplifying the operation and reducing the loss of the connecting part. Each brush bundle contains multiple contact points, with low contact pressure, low noise and low contact wear rate.