Roller Bar Tarp System Eliminates Sliding Arms
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Solution Overview
Problem
Existing truck trailer tarpaulin systems require additional arms that slide, retract, telescope, or elongate to control the rolling or unrolling of tarps, which complicates the process and increases mechanical complexity.
Innovation Solution
A rolling tarpaulin system with at least two tracks and roller assemblies mounted on the trailer, an elongate roller bar supported by these assemblies, and a drive mechanism to rotate the roller bar, allowing the tarp to roll up or unroll without the need for additional sliding or telescoping arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If additional arms that slide, retract, telescope or elongate are used to control tarp rolling, then the tarp can be controllably rolled or unrolled, but the device complexity increases
Solution Approach 1:
The patent removes the complex additional arms (sliding, retracting, telescoping components) from the system entirely. Instead, it uses a simplified roller bar assembly that rotates about its longitudinal axis, with the tarp rolling directly on the roller bar itself. This extraction of unnecessary components directly reduces device complexity while maintaining tarp control functionality.
Solution Approach 2:
Conventional systems use arms that move linearly (slide, retract, telescope) to control tarp rolling. This invention inverts the approach by using a roller bar that rotates about its longitudinal axis, converting linear motion requirements into rotational motion. The tarp rolls on the roller bar itself rather than being pulled by external arms, fundamentally changing the control mechanism.
2Reliability
If additional arms are used to control tarp rolling, then the tarp can be securely managed, but the ease of operation decreases
Solution Approach 1:
By removing the complex arm mechanisms (sliding, retracting, telescoping components), the system eliminates the operational difficulties associated with coordinating multiple moving parts. The simplified roller bar assembly with direct rotational control makes the system easier to operate while maintaining secure tarp management through the rolling mechanism itself.
3Device complexity
If a simplified roller bar system is used without additional arms, then the device complexity is reduced, but the capability to controllably roll or unroll the tarp may be compromised
Solution Approach 1:
The roller bar serves multiple functions: it supports the tarp, provides the rolling surface, acts as the drive mechanism through rotation about its longitudinal axis, and eliminates the need for separate control arms. This multi-functionality maintains full tarp control capability while achieving mechanical simplicity.
Data Source
AI summary
A system for selectively covering and uncovering an opening of a trailer for trucks, comprising at least two tracks mounted to the trailer, at least two roller assemblies, each mounted for rolling movement along one of the tracks between a covered position and an uncovered position, an elongate roller bar extending between and supported by the at least two roller assemblies, and a drive mechanism operatively connected to the roller bar to rotate the roller bar about its elongate axis. The roller bar is adapted to receive a cover in a rolled configuration in which the opening of the trailer is not covered by the cover, when the roller assemblies are in the uncovered position. The roller bar is further adapted to receive the cover in an unrolled configuration in which the cover covers the opening, when the roller assemblies are in the covered position.