Mast Erection Facility for Modular Hoisting Apparatus
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Solution Overview
Problem
Existing hoisting devices require extensive space for on-site assembly due to the need to assemble masts and main booms to their full length on the ground, leading to inefficiencies in transportation and setup.
Innovation Solution
A ground-standing erection facility with a push-up and lowering capability for mast pieces, allowing for stepwise assembly and disassembly within a minimal footprint, enabling mast pieces to be easily added or removed at ground level without additional equipment, and allowing the apparatus to be maneuvered without dismantling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If masts and main booms are assembled to full length on the ground, then the apparatus can be transported in standardized sea containers, but extensive space is required for on-site assembly
Solution Approach 1:
The apparatus is divided into modular components including mast sections, booms, and counterweights that can be independently transported in standardized sea containers and assembled vertically using the erection facility, eliminating the need for large ground assembly spaces
Solution Approach 2:
The assembly process transitions from horizontal ground assembly to vertical elevation using the erection facility's lifting mechanism, allowing components to be assembled in a compact footprint by building upward rather than outward
2Adaptability or versatility
If the apparatus is dismantled for relocation, then it can be transported to new locations, but time and costs increase due to assembly and disassembly operations
Solution Approach 1:
The modular design with standardized connection interfaces allows rapid assembly and disassembly of mast sections and booms, enabling efficient relocation while maintaining structural integrity
Solution Approach 2:
The erection facility integrates both lifting and positioning functions in one device, allowing the apparatus to be assembled and disassembled using its own dedicated equipment rather than requiring multiple external cranes and support devices
3Ease of operation
If ancillary equipment such as other cranes are used to hoist mast pieces, then mast pieces can be positioned at required levels, but the footprint and device complexity increase
Solution Approach 1:
The erection facility combines the lifting mechanism, positioning system, and mast assembly functions into a single integrated device that operates independently, eliminating the need for separate cranes and ancillary equipment
Solution Approach 2:
The erection facility is designed as a general-purpose device that can assemble and disassemble various types of masts and booms for different apparatus configurations, providing versatile functionality without requiring specialized equipment for each task
Data Source
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AI summary
Apparatus for lifting heavy loads, comprising at least one mast (5, 6; 5', 6') or part of such mast, from which a load may be suspended, wherein the apparatus is provided with an erection facility (1, 2) that during erection of the apparatus is invariably positionable on a supporting surface external of the apparatus and equipped to convert the apparatus between a dismantled position and a fully erected position.