Crane deeds

Since there is a truncated cone-liter overhead-column, after forward or backward truncated cone column, Renzi Jia style and bracing frame. Those who are required to set up the rotary tower crane counterweight, its function is to support the counterweight to constitute a role opposite direction and lifting torque design balance required torque. In addition to the counterweight, but also often installed in its tail lifting mechanism. The reason why lifting mechanism with a counterweight mounted trailing arms together in the balance, you can assign a weight to play the role of the Ministry and, secondly, increasing the distance between the rope reel and the spire of the guide wheel between rows to facilitate rope around and avoid arbitrary justice phenomenon. Counterweight inversely related to the amount and length of the balance arm, and then there is a certain proportion between the balance arm length and boom length.