Portable Rooftop Hoist Assembly Powered by Standard Drill
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Solution Overview
Problem
Existing rooftop hoists are often bulky, cumbersome, and require multiple users for operation, making it difficult for tradesmen to efficiently hoist heavy equipment to rooftops during construction and maintenance.
Innovation Solution
A portable rooftop hoist assembly that can be powered by a standard power drill and operated by a single user, featuring a rotatable hub coupled to a power tool to pull and release lines for lifting and lowering objects, with an attachment mechanism for secure mounting to parapet walls or ladders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional rooftop hoists are used, then heavy equipment can be hoisted to rooftops, but the hoists are bulky and cumbersome to assemble and maneuver
Solution Approach 1:
The hoist is divided into separate modular components including a hub assembly, a line pulling mechanism, and a pulley system that can be independently assembled and configured. This segmentation allows for easier assembly and disassembly while maintaining the necessary functionality for hoisting heavy equipment.
Solution Approach 2:
The hoist mechanism is extracted from traditional bulky structures and integrated into a more compact form factor that can be easily maneuvered and assembled. The essential functions are separated from the unnecessary bulk, creating a streamlined design that maintains capability while improving ease of operation.
2Ease of operation
If traditional rooftop hoists are used, then heavy equipment can be hoisted to rooftops, but multiple persons are required to operate them
Solution Approach 1:
The hoist system is designed to be self-operating through a single user who can control the line pulling mechanism and pulley system independently. The mechanism allows one person to manage the entire hoisting process without requiring assistance from multiple persons, while still maintaining the capability to handle heavy equipment efficiently.
3Ease of operation
If traditional rooftop hoists are used, then heavy equipment can be hoisted to rooftops, but the hoists are difficult to maneuver and operate
Solution Approach 1:
The hoist incorporates dynamic elements including a rotatable hub that can be easily turned by a single user, and a line pulling mechanism that allows for smooth and controlled maneuvering. The pulley system is designed to move freely and respond dynamically to user input, making the entire hoist easy to maneuver and operate despite the complexity of handling heavy equipment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and single-user operation of hoisting heavy equipment to rooftops, improving accessibility and reducing the need for multiple personnel, while being compact and easy to maneuver.
Implementation Method 1
a rotatable hub configured with a line pulling mechanism to pull a length of line up and down
Implementation Method 2
a pulley assembly to guide the length of line during use
Data Source
AI summary
A portable hoist assembly. The hoist assembly includes an attachment assembly to releasably attach the hoist assembly to a rooftop parapet wall or similar and a rotatable line pulling assembly (e.g., a winch) to pull lengths of line upward to hoist objects from the ground to the rooftop, and to release lengths of line downward to lower objects from the rooftop to the ground. The rotatable line pulling assembly is rotated using a power tool (e.g., a power drill) releasably coupled to its hub. The hoist assembly also includes a base support configured between the line pulling assembly and the top of the parapet wall to provide vertical support to the hoist. The hoist assembly also includes a separate ladder attachment assembly for attaching the hoist to a ladder.