Lifting Harness Weight Distribution and Safety
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Solution Overview
Problem
Existing lifting harnesses are inconvenient to wear and can cause body damage by distributing heavy object weight on the arms or neck, lacking effective shoulder support for safe lifting.
Innovation Solution
A lifting harness with a waist belt, shoulder support assembly, and lifting strap assemblies that distribute the weight across the shoulders, featuring adjustable straps, support pads, and attachment devices for secure lifting, allowing hands-free maneuvering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lifting straps are used that wrap around the arms or neck, then lifting capability is achieved, but body damage occurs due to concentrated weight on arms or neck
Solution Approach 1:
The lifting device divides the weight-bearing function across multiple body regions (shoulders, chest, waist) rather than concentrating it on one area. The harness system segments the load distribution through separate straps for each body part, preventing localized injury while maintaining lifting capability
Solution Approach 2:
The harness acts as an intermediary device between the user's body and the heavy object. Instead of direct contact between arms/neck and the load, the harness distributes forces through multiple contact points, mediating the stress and preventing body damage
2Adaptability or versatility
If coupling mechanisms are incorporated into harness webbing, then attachment functionality is provided, but the mechanisms become inconvenient and difficult to put on
Solution Approach 1:
The coupling mechanisms are designed to be self-contained and self-operating. The user can easily engage and disengage the lifting device from the harness without requiring assistance or complex manipulation, making the attachment system user-friendly while maintaining secure connectivity
3Reliability
If weight is distributed across the core body, then safety and comfort are improved, but the device structure becomes more complex
Solution Approach 1:
The harness components serve multiple functions: the waist belt provides both structural support and weight distribution, the shoulder straps simultaneously support load and position the lifting mechanism, and the coupling mechanisms enable both attachment and adjustment. This multi-functionality reduces the need for additional separate components, managing complexity while achieving safety
Data Source
AI summary
A lifting harness is described herein. The lifting harness includes a waist belt adapted to extend around a waistline of a user and a shoulder support assembly coupled to the waist belt. The shoulder support assembly is adapted to extend across each shoulder of the user and includes a pair of shoulder support straps. A pair of lifting strap assemblies is coupled to the shoulder support assembly. Each lifting strap assembly includes a lifting strap having a first end, a middle portion, and a second end. The middle portion is coupled to a corresponding shoulder support strap and adapted to extend across a corresponding shoulder of the user. The first end is coupled to the second end to form a shoulder loop. An attachment device is coupled to the first end of the lifting strap. A lifting device is detachably coupled to the attachment device.