Load-Reactive Braking Roller Assembly for Variable Cargo Loads
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Solution Overview
Problem
Conventional braking rollers for cargo movement are too powerful for light loads, causing skidding and flat spots on the rollers due to insufficient braking force, which is not adaptable to varying load conditions.
Innovation Solution
A roller assembly with an internal braking mechanism that adjusts braking force linearly with the mass of the cargo, utilizing a spring-like axle assembly and tension straps to apply compressive force to the brake arrangement, ensuring effective braking without excessive friction for lighter loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strong brakes are preset at maximum braking load, then heavy cargo can be controlled, but light loads cannot be braked effectively causing skidding
Solution Approach 1:
The brake arrangement is designed to dynamically adjust braking force based on load conditions. The friction member is movable relative to the roller surface, allowing the braking force to vary automatically with the weight of the cargo being transported, thus adapting to different load conditions without manual intervention.
Solution Approach 2:
The system changes the braking parameter (friction force) based on load weight. As cargo weight increases, the braking force automatically increases through the mechanical linkage between the friction member and the roller, ensuring optimal braking performance across varying load conditions.
2Reliability
If preset strong brakes are used for maximum weight, then heavy loads are safe, but light loads cause skidding and flat spots
Solution Approach 1:
The brake arrangement dynamically adjusts to match the load weight, preventing both excessive braking force on light loads (which causes skidding) and insufficient braking force on heavy loads (which compromises safety). The friction member moves automatically with load variations.
Solution Approach 2:
The braking system is self-regulating based on the load itself. The weight of the cargo automatically adjusts the braking force through the mechanical connection between the friction member and roller, eliminating the need for external control mechanisms or manual adjustment.
3Force
If friction material is placed around the outer surface, then braking is achieved, but skidding creates flat spots on the roller
Solution Approach 1:
The friction member is designed to be movable rather than fixed, allowing it to automatically adjust its position and contact pressure based on the load weight. This dynamic adjustment ensures optimal braking force application that prevents skidding-induced flat spots while maintaining effective braking.
Solution Approach 2:
The contact pressure and friction force parameters are dynamically changed according to load conditions. The system automatically modulates these parameters to maintain braking effectiveness without exceeding the threshold that would cause skidding and surface damage.
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
The solution provides a responsive braking system that maintains control during cargo movement by adjusting braking force in proportion to the load, preventing skidding and wear on the rollers across a range of load conditions.
Implementation Method 1
a spring-like axle assembly and tension straps to apply compressive force to the brake arrangement
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A roller assembly (100) comprises a first axle (212) having a first inner shaft (312) and a second axle (214) having a second inner shaft (322). The roller assembly may further comprise a plurality of roller elements (330) between the first inner shaft and the second inner shaft. The roller assembly may further comprise a roller (110) disposed between a first tension strap (126) and a second tensions strap (128).