Trolleying Car of Self-Erecting Tower Crane

Trolleying car of self-erecting tower crane is steel structure component that propels hooks and lifting goods in reciprocating motion along with crane boom longitudinal axis. It has four road wheels, two at each side. The operation track of road wheels is the bottom chord of boom. On one side of the trolley lies maintenance hanging basket which motions together with trolley and can safely transport operation personnel to any position of crane boom for installation or maintenance. There are regulation screws at two ends of trolley which are used to tighten amplitude wire ropes. Meanwhile, there is rope-breaking protector to prevent trolley out of control once its amplitude rope is broken. Also, there are anti-collapse devices at both sides of the trolley.