Powered Handheld Chain Driver Motorized Sprocket Mechanism
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Solution Overview
Problem
Existing chain fall devices cause muscle fatigue and injuries due to repetitive high-stress motion, lacking balanced and easy-to-use designs that eliminate the need for manual chain pulling.
Innovation Solution
A powered handheld chain driver with a central core plate, dual handles, and a circular chain sprocket, driven by a motor and battery, which allows for balanced operation and reduces repetitive motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If manual chain pulling is used to operate chain fall, then mechanical advantage is achieved for lifting heavy loads, but muscle fatigue and upper extremity injuries occur due to repetitive high-stress motion
Solution Approach 1:
The patent replaces the manual mechanical pulling system with a powered mechanical system. A motorized chain driver device substitutes human hand pulling with automated motor-driven chain movement, eliminating repetitive high-stress motion while maintaining the mechanical advantage needed for lifting heavy loads through the chain fall mechanism
Solution Approach 2:
The chain driver device is designed to be self-operating through battery-powered motor activation. The device handles its own operation autonomously without requiring continuous human intervention or repetitive manual chain pulling, allowing the system to service itself through automated motor control
2Object-affected harmful factors
If powered mechanism is added to eliminate manual chain pulling, then repetitive motion injuries are reduced, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into a single integrated handheld device. The motor, battery, chain driver mechanism, and control components are merged into one compact unit that attaches to the chain fall, simplifying the overall system while eliminating repetitive motion injuries through automated operation
Solution Approach 2:
The chain driver device is designed with universal applicability to work with chain fall mechanisms. The motorized device performs multiple functions including chain driving, power supply integration, and automated operation control, reducing the need for separate manual operations while managing complexity through multi-functional integration
3Extent of automation
If battery and motor are integrated into handheld device, then automated chain driving is achieved, but device weight increases
Solution Approach 1:
The patent addresses weight distribution through balanced positioning of the battery and motor components within the handheld device structure. The components are strategically positioned to create counterbalancing effects, distributing the weight of the battery and motor in a manner that maintains device balance and reduces the effective burden during operation despite the increased total weight
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
The powered handheld chain driver effectively reduces user fatigue and injury risk by providing a balanced and easy-to-use mechanism for operating chain falls, eliminating the need for high-stress repetitive motion.
Implementation Method 1
a drive motor is coupled to a drive shaft to drive the chain sprocket
Implementation Method 2
circular chain sprocket for driving a hand chain from a chain fall on opposing sides of the chain sprocket
Data Source
AI summary
A powered handheld chain driver for driving a chain from a chain fall thereby minimizing the effort required to raise and lower loads. The chain driver comprises an integrated or separated drive motor driving a chain sprocket that drives the chain. The chain sprocket is positioned between a pair of vertical spaced chutes and is engaged within a portion of the chutes. Each spaced chute is split and can be opened in a release configuration, for loading and unloading a chain therein. The chutes also comprise a drive configuration wherein the chutes are closed and the chains are captured within the chutes during chain driver operation. Lateral of each chute is a hand assembly comprising handles for supporting the chain driver with the user's hands. A battery is mounted on one side of the chain driver to supply power to the drive motor via one or more power switches.