A method for smoothly lifting an entire arrow using an asymmetric fixed-distance double-hook tower crane

Abstract

The present invention discloses a method for smoothly lifting a whole rocket using an asymmetric fixed-distance double-hook tower crane. First, a mechanical model of the stable lifting state of the whole rocket using an asymmetric fixed-distance double-hook tower crane is established. The mechanical model is analyzed to establish and solve a set of equations in the lifting equilibrium state. The initial lifting position is determined based on the solution calculation results. A condition and implementation method for stable lifting are obtained. The present invention is a method for smoothly lifting a whole rocket using an asymmetric fixed-distance double-hook tower crane with the lifting of a carrier rocket as the application background. The method takes into account the influence of the asymmetric state of the fixed-distance double-hook tower crane on the lifting stability. By establishing a mechanical model of the entire lifting system, the proportional relationship of the double-hook pulling force for stable lifting and the method for determining the initial position of the lifting product are given. The implementation steps for stable lifting are further given. The method can achieve stable lifting of the asymmetric fixed-distance double-hook tower crane and has been verified by experiments. The method is compatible with the symmetrical state of the tower crane and is also applicable to the lifting of other slender components.

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