Asymmetric Cinch Strap System for Dolly Cargo Security
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Solution Overview
Problem
Improperly secured cargo on dollies or hand trucks often shifts and falls, leading to accidents, damage, and environmental hazards, highlighting the need for a secure cargo handling system.
Innovation Solution
A cinch strap system comprising two straps, a shorter first strap with overlapping loops and rings, and a longer second strap that wraps around the dolly and cargo, securely attaching to the first strap's rings to prevent cargo slippage, utilizing materials like polyester webbing or nylon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cargo is improperly secured on a dolly or hand truck, then the cargo can shift and fall causing accidents and damage, but adding a securement system increases device complexity
Solution Approach 1:
The cinch strap system is divided into two separate straps: a first strap that secures to the dolly handle and a second strap that wraps around the cargo. This segmentation allows each strap to perform a specific function independently, improving cargo security while keeping each individual strap relatively simple in design.
Solution Approach 2:
The cinch strap system is designed to be universally applicable to various types of cargo and dolly configurations. The straps can accommodate different cargo sizes and shapes, and can be used with different types of dollies or hand trucks, reducing the need for multiple specialized devices.
2Ease of operation
If a single long strap is used to secure cargo, then the strap can wrap around the dolly and cargo, but it becomes difficult to tighten and secure properly
Solution Approach 1:
By dividing the securement system into two separate straps of different lengths, the system makes tightening easier. The first strap (shorter) can be tightened around the dolly handle independently, and the second strap (longer) can be tightened around the cargo independently, allowing for better control and reliability compared to a single long strap.
Solution Approach 2:
The cinch straps are designed with dynamic adjustment capabilities, allowing the user to tighten and loosen the straps as needed. The straps can be adjusted to accommodate different cargo sizes and tightening requirements, improving both ease of operation and securement reliability.
3Adaptability or versatility
If the first strap is made longer to provide more adjustment range, then it can accommodate more cargo sizes, but it interferes with the second strap's ability to wrap around the dolly
Solution Approach 1:
The two straps are deliberately made asymmetric in length: the first strap is shorter and the second strap is longer. This asymmetric design allows the shorter first strap to secure to the dolly handle without interfering with the longer second strap's ability to wrap around the dolly and cargo, while still providing adaptability for different cargo sizes through the combination of the two straps.
Data Source
AI summary
A cinch strap system for securing cargo to a dolly or other type of hand truck having a first and second strap. The first strap has opposing first and second loop ends. A first loop is on the first loop end of the first strap and secures at least two rings to the first strap. A second loop is on the second loop end of the first strap. The second strap is of longer length than the first strap and includes a second strap loop on one end of the second strap. The end of the second strap opposing the second strap loop is a free end.