Portable Lifting Machine With Pivoting Mast for Doorway Transport
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Solution Overview
Problem
Existing portable floor cranes that lift heavy loads are too large and heavy for easy transportation and storage, often requiring disassembly to fit through standard doorways and are cumbersome for a single user to handle.
Innovation Solution
A portable lifting machine with a rollable base, rotatable legs, and a pivoting mast that can alter its width and height, allowing it to be compacted for transportation and storage, and features like removable components and locking mechanisms to maintain stability during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the floor crane is made larger and heavier to lift heavier loads to higher heights, then the lifting capacity and height are improved, but the ease of transportation and storage deteriorates
Solution Approach 1:
The floor crane is divided into multiple detachable components including a base assembly, a mast assembly, and a load lifting assembly. These segments can be separated and reconfigured, allowing the crane to be disassembled into smaller, more manageable pieces that are easier to transport and store while maintaining full lifting capacity when assembled.
Solution Approach 2:
The floor crane incorporates movable and adjustable components such as a rotatable base plate, telescoping mast sections, and adjustable legs. These dynamic elements allow the crane to change its configuration between operational and transport states, optimizing both lifting performance and ease of movement.
2Power
If the floor crane is made larger and heavier to lift heavier loads to higher heights, then the lifting capacity and height are improved, but the ease of storage deteriorates
Solution Approach 1:
The floor crane is divided into multiple detachable components including a base assembly, a mast assembly, and a load lifting assembly. These segments can be separated and reconfigured, allowing the crane to be disassembled into smaller, more manageable pieces that are easier to transport and store while maintaining full lifting capacity when assembled.
Solution Approach 2:
The mast assembly features telescoping sections that can be nested within each other, and the load lifting assembly can be stored within or adjacent to the base assembly. This nesting capability significantly reduces the storage footprint of the floor crane when not in use.
3Device complexity
If the floor crane has fixed dimensions, then the structural simplicity is improved, but the adaptability to different locations and configurations deteriorates
Solution Approach 1:
The floor crane incorporates movable and adjustable components such as a rotatable base plate, telescoping mast sections, and adjustable legs. These dynamic elements allow the crane to change its configuration between operational and transport states, optimizing both lifting performance and ease of movement.
Solution Approach 2:
The floor crane is designed with universal features including a rotatable base plate that can orient the crane in any direction, adjustable leg positions for different ground conditions, and a telescoping mast that adapts to various height requirements. These features enable the same crane to operate effectively in diverse locations and configurations.
Data Source
AI summary
A portable lifting machine is provided including a rollable base, a base post extending upward from the rollable base, a mast pivotally attached to the base post at a pivot point, and a load lifting assembly attached to the mast and selectively operable to lift a load. The rollable base may include a plurality of legs selectively rotatable about the base between an inward orientation and an outward orientation. The pivoting of the mast on the base post and the rotatability of the plurality of legs on the base can allow the portable lifting machine to move to an orientation where it can be rolled through doorways or other confined spaces.