Roll Tarp Arm Assembly for Floating Over Heaping Loads
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Solution Overview
Problem
Roll tarp systems often get caught or blocked by heaping loads that extend above the sides of containers, compromising their ability to effectively cover or uncover cargo.
Innovation Solution
An arm assembly with a torsion spring mechanism that biases the arms away from each other, allowing the roller assembly to float over heaping loads, combined with a separable bushing and collar assembly for easy replacement and rotational support of the tarp axle tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the roll tarp uses a fixed arm structure, then the structure is simple and stable, but it gets caught or blocked by heaping loads piled above the container sides
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed arm structure into a dynamic, movable arm assembly. The arms are designed to pivot and float over heaping loads, allowing the roll tarp system to adapt to varying cargo configurations. The torsion spring mechanism enables the arms to move dynamically rather than remaining static, solving the problem of getting caught by heaping loads.
Solution Approach 2:
The patent employs the anti-weight principle through the torsion spring mechanism that counterbalances the weight of the arms and provides the necessary force to lift and float the arms over heaping loads. The torsion spring acts as a counterweight system, storing and releasing mechanical energy to maintain arm movement and positioning without requiring additional actuators.
2Ease of repair
If the roll tarp arm structure is rigid and fixed, then manufacturing and assembly are simple, but maintenance and replacement of components are difficult
Solution Approach 1:
The patent applies segmentation by dividing the arm assembly into modular components including separable bushings and collars that can be independently removed and replaced. This modular design allows maintenance personnel to access and replace wear components without disassembling the entire arm structure, significantly improving ease of repair while maintaining structural integrity through standardized connection interfaces.
3Adaptability or versatility
If the arms are biased together, then the structure is compact and stable, but the roll tarp cannot float over heaping loads
Solution Approach 1:
The torsion spring mechanism serves as a counterweight system that actively biases the arms away from each other, creating the necessary force to lift and float the arms over heaping loads. This counterbalancing force maintains arm separation and mobility while the spring's elastic properties provide continuous adjustment capability to maintain stability during operation.
Solution Approach 2:
The patent employs parameter changes through the torsion spring mechanism that dynamically adjusts the biasing force between arms. The spring's torque characteristics can be optimized to provide appropriate force at different arm positions, allowing the system to maintain stability in the retracted position while having sufficient force to float over loads when needed.
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
Facilitates the smooth operation of the roll tarp over heaping loads, ensuring complete coverage or uncovering of the container contents while allowing for easy maintenance and replacement of the tarp assembly.
Implementation Method 1
a torsion spring mounted about the pivot to extend into the first arm and the second arm to bias the first arm and the second arm away from one another
Data Source
AI summary
An arm assembly for a roll tarp system includes a first arm which defines a first arm axis; a first arm extension attached to the first arm, the first arm extension defines a first arm extension axis, the first arm extension axis defines an angle with respect to the first arm extension axis between 10 to 95 degrees, the first arm extension comprises a first pivot aperture; a second arm which defines a second arm axis; a second arm extension attached to the second arm, the second arm extension defines a second arm extension axis, the second arm extension axis defines an angle with respect to the second arm extension axis between 10 to 95 degrees, the second arm extension comprises a second pivot aperture; a pivot through the first pivot aperture and the second pivot aperture; and a torsion spring mounted about the pivot to extend into the first arm and the second arm to bias the first arm and the second arm away from one another.