What causes the reverse rotation of Sany Tower Crane after it stops rotating?

Loose bolts of tower body, loose bolts of wall-attached rods, and excessive verticality deviation of tower crane, etc.

1. Loose bolts on the tower: loose connecting bolts on the tower will lead to instability of the whole structure. When the rotation stops, the tower will rotate in the opposite direction under the influence of external force or center of gravity deviation.

2. Loose bolts of wall-attached poles: many key connection points and fasteners (screws, rivets, etc. ) Supporting structure for connecting with buildings. Any connection point has a problem and becomes unstable, which leads to the imbalance of the whole system and unexpected inversion in operation.

3. Excessive verticality deviation of the tower crane: If there is a serious verticality deviation problem in the installation or operation of the tower crane itself, natural shaking or tilting will also cause unexpected rotation. Reverse rotation occurs after the rotation stops.