Load-Lifting Device With Offset Pulley Wheels
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Solution Overview
Problem
Conventional methods for moving loads require significant personal effort, which can be challenging for the elderly or infirm and lead to undesirable physical exertion, often involving complex or expensive motorized technology.
Innovation Solution
A load-lifting device comprising a grasping component, load-connection component, and a load-reduction device with offset wheels and a fixed length of load-bearing line, allowing a single user to lift loads with reduced effort without the need for motorized machinery, by distributing the force across multiple wheels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional methods are used to move loads, then the task can be completed, but significant personal effort and physical exertion are required
Solution Approach 1:
The patent introduces a load-lifting device as an intermediary between the user and the load. This device includes a load-reduction mechanism with pulleys or wheels that mechanically mediate the force transmission, allowing the user to lift heavy loads with reduced effort through mechanical advantage
Solution Approach 2:
The patent changes the mechanical parameters of the lifting system by introducing movable pulleys or wheels with specific radii and configurations. These parameter changes create mechanical advantage ratios that reduce the input force required while maintaining the lifting function
2Force
If motorized technology is used to move loads, then lifting effort is reduced, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex motorized mechanical systems with a simpler passive mechanical system based on pulleys or wheels. This substitution eliminates motors, controllers, and power sources while achieving force reduction through pure mechanical advantage from the pulley/wheel configuration
Solution Approach 2:
The load-lifting device is designed to be self-operating through its mechanical advantage system. The user's input force automatically translates to load lifting through the pulley/wheel mechanism without requiring external power sources, control systems, or active components
3Device complexity
If personal effort is used to move loads, then no additional equipment is needed, but medical issues and physical strain may arise
Solution Approach 1:
The load-lifting device serves as a protective intermediary that reduces the direct transmission of harmful forces to the user's body. By mechanically reducing the required lifting force through pulleys or wheels, the device prevents excessive physical strain and potential medical issues associated with heavy lifting
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 device significantly reduces the force required to lift loads, providing a mechanical advantage that decreases the effort needed by at least 25% to 75% compared to traditional methods, making it easier for a single user to move loads.
Implementation Method 1
a fixed length of load-bearing line having a first end connected to the grasping component, and a second end connected to the load-connection component, and connected therebetween in an arc of contact to each of the wheels of the load-reduction device
Implementation Method 2
connected therebetween in an arc of contact to each of the wheels
Data Source
AI summary
There is provided herein a load-lifting device for personal or mechanical use, a method of operating the load-lifting device and a fishing pole having the load-lifting device.