Force Amplifier Lift Assist Device for Single-Worker Heavy Load Handling
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Solution Overview
Problem
Current lifting equipment requires multiple workers to handle large, heavy, and bulky items, which is often not feasible or cost-effective, and lacks a device that allows a single worker to directly control the movement of such items with assisted force amplification.
Innovation Solution
The Enhanced Lift Assist Device features an adjustable base, an articulating arm assembly, a lifting element with a variable displacement mechanism, a control handle, a tool, a force sensor, and a computer-based force amplifier that converts user-applied force into mechanical force for item movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple workers are used to handle large, heavy, and bulky items, then the lifting capacity and control are improved, but the cost and operational complexity increase
Solution Approach 1:
The patent replaces the mechanical system of multiple human workers with a computer-based force amplifier that converts user-applied force into amplified mechanical force. The force sensor detects user input and the computer-based system processes this to generate proportional amplified output force, substituting human mechanical effort with an automated force multiplication system.
Solution Approach 2:
The patent changes the force parameter by using a force amplifier with a specific amplification ratio (e.g., 4:1 or higher). The system takes a small input force from the user and transforms it into a much larger output force capable of lifting heavy items, fundamentally changing the force parameter from human-limited to machine-amplified levels.
2Adaptability or versatility
If specialized fixtures or tools are used for movement and placement of items, then the handling capability is improved, but the device complexity and cost increase
Solution Approach 1:
The patent creates a universal handling system where the force amplifier can work with various tools and items without requiring specialized fixtures. The system provides adaptable handling capability through its ability to amplify force for different types of tools (graspers, manipulators, etc.) and can be configured for different items, reducing the need for dedicated equipment for each specific task.
3Ease of operation
If a single worker operates the device, then the operational simplicity is improved, but the force amplification requirement increases
Solution Approach 1:
The patent introduces a computer-based force amplifier as an intermediary between the user's manual force input and the tool's mechanical output. This intermediary system includes a force sensor that detects user input and a computer-based amplifier that processes this input to generate the amplified force needed, acting as a mediator that transforms small user forces into large output forces.
4Measurement precision
If direct control of item movement by the worker is implemented, then the control precision is improved, but the force requirement increases
Solution Approach 1:
The patent implements a feedback system where the force sensor continuously monitors the user's applied force and feeds this information back to the computer-based amplifier. This feedback loop allows the system to precisely control the amplified output force based on the user's input, enabling precise control of item movement while the amplifier handles the force multiplication, so the user doesn't need to directly generate the full lifting force.
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
This device enables a single worker to efficiently handle and move large, heavy, and bulky items by amplifying the user's applied force, reducing fatigue and the need for multiple workers, while allowing for direct control and adaptability in various environments.
Implementation Method 1
a force sensor that detects force applied by a user
Implementation Method 2
a computer-based force amplifier that converts user applied force received by the force sensor to mechanical force applied to the tool
Data Source
AI summary
An Enhanced Lift Assist Device is described. The device allows a user to lift and manipulate large, heavy or bulky items by applying force to the item as opposed to traditional control methods such as buttons. This force based system provides ease of movement of the item, making it appear much lighter than it actually is. The Enhanced Lift Assist Device also includes an adjustable base that allows for change of orientation of the device that may include leveling or self-leveling functionality, allowing the device to be operated in non-traditional environments that require leveling or operational adjustments for proper functioning.