Self-Coiling Tarp System for Single-Operator Cargo Protection
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Solution Overview
Problem
Traditional tarping systems for commercial trucks and trailers are labor-intensive and require multiple personnel to install and remove, often necessitating a person to be on the load, and they often result in full tarping even when only partial protection is needed, which is inefficient and wasteful.
Innovation Solution
A self-coiling tarping system with reels and bias assist mechanisms allows for single-operator deployment and stowage from the ground, enabling flexible tarp placement and removal without needing to access the truck bed, using a combination of side and overhead tarps that can be independently deployed and stowed to cover only exposed areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tarps are used, then cargo protection is achieved, but labor intensity increases and requires multiple persons
Solution Approach 1:
The tarp system automatically deploys and retracts using a spring-loaded reel mechanism that provides continuous tension without requiring manual intervention. The tarp self-tensions against the cargo load, eliminating the need for multiple workers to manually position and secure the tarp.
Solution Approach 2:
The manual mechanical system of multiple workers draping and securing tarps is replaced with an automated spring-loaded reel mechanism that uses elastic potential energy to tension and maintain the tarp in position, reducing labor from multiple persons to a single operator.
2Reliability
If full tarping is applied, then cargo protection is improved, but resource usage increases
Solution Approach 1:
The tarp system transitions from static full coverage to dynamic partial coverage, allowing the tarp to be deployed only when and where needed. The spring mechanism enables quick deployment and retraction, so the tarp is used only during inclement conditions rather than continuously.
Solution Approach 2:
Instead of uniformly tarping the entire cargo load, the system applies protection locally only to the portions of cargo exposed to inclement conditions. The tarp can be positioned to cover only the lower 4 feet or specific vulnerable areas rather than the entire load.
3Reliability
If traditional tarping methods are used, then cargo coverage is achieved, but time consumption increases
Solution Approach 1:
The tarp is pre-mounted on spring-loaded reels positioned at the front of the cargo load, with the spring mechanism pre-charged. This preliminary positioning allows immediate deployment by simply releasing the tarp, eliminating the time required to manually carry, drape, and secure traditional tarps.
Solution Approach 2:
The system enables rapid deployment and retraction of the tarp, allowing the operator to quickly respond to changing weather conditions. The spring mechanism provides instant tension, and the tarp can be deployed or stowed in minutes rather than the extended time required for manual tarping operations.
4Loss of energy
If tarps are kept taut, then wind resistance is reduced, but tension force increases
Solution Approach 1:
The spring mechanism continuously adjusts the tension parameter of the tarp, maintaining optimal tautness to minimize wind resistance and fluttering. The spring force is calibrated to provide sufficient tension for aerodynamic efficiency while remaining within safe limits for the tarp material and cargo load.
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
This system reduces labor and resource usage by allowing a single operator to efficiently deploy and retract tarps, minimizing exposure of cargo to inclement weather while maintaining cargo dryness, and enhancing fuel economy by reducing wind resistance.
Implementation Method 1
the reel may be spring-loaded to automatically bias the tarp toward the self-coiled (rolled), stowed position
Implementation Method 2
a reel operative to urge the tarp toward a stowed position, coiled onto a spool of the reel, under a return force
Implementation Method 3
provide a constant tension on the tarp to help keep the tarp taught when moved to the deployed position
Data Source
AI summary
A tarping system and method for covering at least a portion of a cargo load carried on a cargo carrying surface of a bed of a truck or trailer are provided. The tarping system includes at least one flexible tarp extending from a mounted end to a free end. At least one reel is coupled to the mounted end and is operative to automatically urge the tarp to a self-stowed positon, coiled onto a spool of the reel, under a return force imparted by the reel. A mounting structure is configured to support the at least one reel and the associated tarp in an upstanding relation relative to the cargo carrying surface to enable a user, while standing on the ground, to draw the tarp from the stowed position to a deployed position to cover at least a portion of a side of the cargo load.