Design and analysis of variable angle and inclined tower crane

Abstract

Considering the problem that the efficiency of traditional tower cranes decreases and the safety risk increases with the increase of height during the construction of a bridge tower with an inclined surface, a variable angle, and inclined tower crane is designed and developed, based on the principle of variable angle action. Part of the tower body of the tower crane can be deformed with the inclined surface of the structure to shorten the anchorage length and achieve the purpose of construction efficiency. Through the structural design and analysis of the new tower crane, the following conclusions are drawn: Based on the deformation principle of cooperative work, the variable angle and inclined tower crane act simultaneously by relying on the tower crane transformation unit and adjustable anchorage to achieve the purpose of tower body deformation. The operation of the new tower crane depends on the simultaneous contraction of two adjustable anchorages that drive the transformation units to rotate around the hinge point in the middle, forming a cooperative deformation system. Through the comparative analysis of vertical state and inclined state, it is found that the stress, displacement, and stability of tower cranes meet the safety and use requirements.