Wind Turbine Load Lifting Assembly with Shifting Element
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Solution Overview
Problem
Conventional cranes are inadequate for lifting and lowering heavy loads on tall structures, such as wind turbines, due to their complexity, weight, and susceptibility to wind loads, leading to inefficiencies and increased construction time.
Innovation Solution
A lightweight assembly comprising a platform element and a C-shaped shifting element, supported by an anchoring system, allows for the lifting and lowering of loads by rotating them from a flat to an upright position, enabling quick assembly, disassembly, and transportation, and simultaneous lifting/lowering of multiple elements, even in adverse weather conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional cranes are used to lift heavy loads on tall structures, then lifting capability is achieved, but device complexity and weight increase significantly
Solution Approach 1:
The lifting system is divided into modular components: a platform element with lifting means, a separate anchoring element, and a shifting element. These segments can be assembled and disassembled independently, reducing overall system complexity while maintaining lifting capability for heavy loads on tall structures
Solution Approach 2:
The platform element serves multiple functions: it supports the load element, provides mounting for lifting means, and incorporates a shifting element for lateral positioning. This multi-functionality eliminates the need for separate positioning devices, reducing system complexity while maintaining full lifting capability
2Force
If conventional lifting systems are used, then heavy loads can be lifted, but susceptibility to wind loads increases erection difficulty
Solution Approach 1:
The anchoring element is secured to the top region of the construction before the platform element is lifted into position. This preliminary anchoring creates a stable support structure that reduces the platform's exposure to wind loads during erection, enabling operation in windier conditions than traditional systems
Solution Approach 2:
The system allows the platform element to be positioned at different heights and the shifting element to adjust lateral position dynamically. This flexibility enables the structure to adapt to wind conditions during erection, reducing susceptibility to wind loads compared to rigid conventional systems
3Force
If complex lifting systems are used, then heavy loads can be lifted, but assembly and disassembly time increases
Solution Approach 1:
The system is divided into discrete modular components (platform element, anchoring element, shifting element) that can be assembled and disassembled independently. This segmentation dramatically reduces assembly time compared to integrated conventional systems while maintaining heavy load lifting capability
Solution Approach 2:
The platform element integrates multiple functions (load support, lifting attachment, positioning) into a single modular unit. This reduces the number of components that need to be assembled and disassembled, cutting assembly time while preserving full lifting capability
4Force
If conventional cranes are used, then lifting capability is sufficient, but transportation and relocation become complicated
Solution Approach 1:
The lifting system is segmented into compact modular components that can be transported separately and assembled on-site. This segmentation makes transportation and relocation significantly easier compared to moving large conventional crane systems, while maintaining heavy load lifting capability through the coordinated assembly of the modular elements
Data Source
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AI summary
The present invention relates to an assembly (20) for lifting a load element (11, 12, 1A, 1B, 15) from a base region of a construction (1), in particular a tower of a wind turbine, to another region of the construction (1), and/or for lowering the load element (11, 12, 1A, 1B, 15) from said other region of the construction (1) to the base region of the construction (1), the assembly comprising: a platform element (20A) for supporting the load element (11, 12, A, 1B, 15); lifting means for lifting the platform element (20A) from the base region of the construction (1) to said other region of the construction (1) and/or for lowering the platform element (20A) from said other region of the 10 construction (1) to the base region of the construction (1); and a shifting element (27) arranged to be able to change its position with respect to the platform element (20A) in order to move the load element (11, 12, 1A, 1B, 15) in said other region of the construction (1) from a load lifting position on the platform element (20A) to a load installation position on the construction (1), wherein the lifting means are supported by an anchoring assembly (2) able to be secured in the top region of the construction (1) and in that, in the load installation position, the platform element (20A) is disposed at least partly below the top of the construction (1). At the same time, the present invention also relates to a corresponding lifting and/or lowering method.