Side-Mounted Biomechanical Lifting Harness for Heavy Load Transport
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Solution Overview
Problem
Existing methods for lifting and transporting heavy, awkward loads by individuals often result in physical strain and injury due to the need for bending, stooping, and balancing loads high on the body, with limited mobility and stability, especially when handling large or bulky items like construction materials.
Innovation Solution
A side-mounted biomechanically engineered lifting device with a diagonal shoulder pad harness and an adjustable load strap system, featuring an auto-tensioning mechanism, allows for lifting and carrying heavy loads with minimal back strain by keeping the load close to the ground, enabling stable and efficient movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a person bends down to pick up heavy loads and carries them high on the body, then the load can be lifted off the ground, but physical strain and injury occur due to back stress and poor balance
Solution Approach 1:
The load is positioned laterally at the user's side rather than vertically in front or on the back, changing the spatial dimension of load carriage. This side-mounted positioning allows the load to hang at a natural waist level without requiring the user to bend forward or stoop, eliminating back strain while maintaining lifting capability
Solution Approach 2:
The load is positioned at the user's side at approximately waist level, creating an equipotential position where the load's center of gravity aligns with the user's natural standing posture. This eliminates the need to lift the load high above the ground or bend forward, reducing physical strain while maintaining balance and stability
2Ease of operation
If simple devices like hand trucks are used, then lifting is easier, but mobility is limited by rough ground and stairs
Solution Approach 1:
The side-mounted load carriage system provides universal applicability across diverse terrains and situations. Unlike hand trucks that require smooth surfaces, this system allows the user to walk naturally on rough ground, stairs, and uneven surfaces while carrying the load at their side, combining the lifting ease of mechanical assistance with the mobility of direct human carrying
3Reliability
If the load is carried in front of the person, then the load is supported, but walking becomes difficult and the person is unbalanced
Solution Approach 1:
The load is positioned asymmetrically at the user's side rather than symmetrically in front or on the back. This asymmetric positioning allows the load to hang naturally at the user's waist level, maintaining balance without interfering with the user's center of gravity or walking mechanics, thus preserving both load support and walking ability
4Object-affected harmful factors
If the load is kept close to the ground, then back strain is reduced, but the user must stoop to deposit the load
Solution Approach 1:
The load is positioned at the user's side at approximately waist level, creating an equipotential position that is naturally accessible during normal standing and walking. The user can deposit the load by simply reaching down to ground level without stooping or bending forward, as the load is already positioned at a convenient height for easy transfer
Data Source
AI summary
The side-mounted, biomechanically designed lifting device maximizes the lifting capability of human anatomy. A harness with a shoulder pad crosses the user's body diagonally. The load is supported by an adjustable load strap at the user's side from a support ring attached to the harness. One end of the support strap is attached to the harness and the other to a lifting handle. With this device and method heavy and awkward loads like plywood and drywall may be carried and manipulated easily. The side-mounted lifting harness causes the user to lean away from the load. This transfers the weight of a load to a point near the ground, below the vertical center of gravity of the user and between the lifter's feet. There is significant biomechanical advantage to this load configuration. One person can carry heavy, awkward loads safely and quickly with a minimum of physical stress.