Collapsible Hoisting Device for Large Metal Container Construction
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Solution Overview
Problem
Existing lifting devices for large metal containers are limited by the need for extensive temporary welding, require significant manpower for support removal, and hinder free operator movement, which increases construction time and costs.
Innovation Solution
A collapsible hoisting device with a pivoting column and extendable, lockable upper and lower bodies linked by a hydraulic piston, featuring a removable fitting system that allows for safe lifting and easy disassembly, minimizing temporary welding and enabling free access for welding operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hydraulic jacks are used for lifting, then lifting function is achieved, but extensive temporary welding is required and significant manpower is needed for support removal
Solution Approach 1:
The lifting device is divided into modular components: a base unit with hydraulic jack, an extendable telescopic column with multiple segments, and removable support fittings. This segmentation allows the device to be assembled and disassembled without extensive welding, as each module can be independently attached and removed.
Solution Approach 2:
The device incorporates a telescopic column that can dynamically extend and retract to accommodate different lifting heights. The column segments can be extended during lifting operations and retracted when not needed, providing adaptability while reducing the need for permanent structural modifications.
2Stability of the object's composition
If lifting device is firmly placed with welded base, then stability is achieved, but resources are expended to unweld it after completion
Solution Approach 1:
The base unit is designed with a removable connection system rather than permanent welding. The base can be extracted from the structure after lifting operations are complete, eliminating the time-consuming unwelding process while maintaining stability during use through its weighted design and secure mounting interface.
3Reliability
If jack remains in position during assembly, then structure is supported, but operators cannot work freely and automatic welding machines cannot be used
Solution Approach 1:
The telescopic column can be dynamically adjusted in height and repositioned as needed during the assembly process. This allows operators to move freely around the structure and positions the lifting device only where absolutely necessary, minimizing interference with welding operations and operator mobility.
Solution Approach 2:
The extendable column acts as an intermediary between the base unit and the structure being lifted. It provides the necessary support function while its telescopic nature allows it to be positioned optimally to minimize obstruction, and it can be retracted or removed when no longer needed.
4Manufacturing precision
If multiple independent hydraulic systems are used, then control of structure verticality is improved, but device complexity increases
Solution Approach 1:
The base unit with hydraulic jack is designed as a universal module that can be used in multiple configurations. A single base unit can support multiple column assemblies, and the same module can be reused throughout the structure, reducing the need for multiple independent hydraulic systems while maintaining control capability.
Data Source
AI summary
A collapsible hoisting device for use in the construction of large metal containers and to a removable accessory applicable thereto. It facilitates construction procedures by reducing project times and costs. The collapsible device includes a column (2) along which respective upper bodies (6) and lower bodies (7) that have been inserted into said column (2) move. The bodies (6, 7) are linked by an extendable means (8). The upper bodies (6) and lower bodies (7) have a corresponding mechanism to lock or attach (9) to the column (2), The column (2) is mounted so that it pivots with respect to a base (1) and the upper body (6) has a housing (609) suitable for the insertion of a removable, fingernail-shaped accessory (12).