Multi-Strap Lifting Layout for Versatile Patient Handling
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Solution Overview
Problem
Existing person lifting systems often employ only a single lift strap, which may not meet the needs of situations requiring multiple straps for various lifting operations.
Innovation Solution
A person lifting apparatus with multiple lifting strap feeding devices, each with its own drum and strap, supported by a structure that directs the straps both horizontally and vertically at an angle, allowing them to exit the housing at offset locations to maintain a predetermined distance and accommodate different lifting requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single lift strap is used in the lifting system, then the device complexity is reduced, but the adaptability for different lifting operations is insufficient
Solution Approach 1:
The lifting system is segmented into multiple independent strap feeding devices (first lifting strap feeding device, second lifting strap feeding device), each capable of operating separately. This segmentation allows the system to handle different lifting operations simultaneously or independently, improving adaptability while maintaining manageable complexity through modular design
Solution Approach 2:
Multiple lifting strap feeding devices are integrated into a single housing, creating a multi-functional apparatus that can perform various lifting operations (single strap, dual strap, different configurations) using the same basic structure. This universal design improves adaptability without proportionally increasing complexity
2Adaptability or versatility
If multiple lifting straps are installed in the housing, then the versatility for various body types is improved, but the structural complexity increases
Solution Approach 1:
Multiple lifting strap feeding devices are merged into a single housing structure, sharing common components such as the housing itself, support structures, and control systems. This combining approach allows the system to accommodate various body types and lifting configurations while avoiding the complexity of completely separate devices
Solution Approach 2:
The lifting straps are arranged to extend in different spatial dimensions (horizontally and vertically at angles) from the housing. This dimensional arrangement allows multiple straps to be accommodated in a compact configuration, improving versatility for different body types without proportionally increasing the footprint or structural complexity
3Ease of operation
If the lifting strap is directed both horizontally and vertically at an angle, then the strap exit positioning is optimized for comfort, but the support structure complexity increases
Solution Approach 1:
The support structure is designed to dynamically position the lifting strap feed out location at optimal angles (both horizontal and vertical) during operation. This dynamic positioning optimizes strap exit for user comfort and ergonomics while the modular support structure keeps the added complexity manageable through standardized components
Data Source
AI summary
A person lifting apparatus includes a strap movement system. The person lifting device includes a housing and a lifting strap feeding device located in the housing. The lifting strap feeding device includes a motor connected to a drum and a lifting strap wound on the drum. A sensor provides a signal indicative of force on the lifting strap. A controller receives the signal from the sensor. The controller controls operation of the motor based on the signal. A user input is used to place the strap movement system in a fast mode during which the controller speeds up operation of the motor from a normal operating speed.