Parcel Sorter Thrust Units for Steep Level Changes
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Solution Overview
Problem
Current sorting machines face challenges with large level changes, leading to premature wear of connection members and increased energy costs due to oversizing of drive elements to handle heavy packages and steep gradients, which results in high tension and compression forces on carriages.
Innovation Solution
The implementation of dedicated thrust units along inclined sections that apply constant forces to carriages, independently of speed, to cancel or reduce weight-related tensions and compressions, using control systems to adjust forces based on slope inclination and article weights, and incorporating electromagnetic brakes for power failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drive elements are oversized to handle heavy packages and steep gradients, then the sorting machine can overcome large level changes, but component wear increases and energy costs rise
Solution Approach 1:
The drive system is segmented into multiple independent thrust units distributed along the inclined sections, each capable of providing localized force to carriages. This segmentation allows the system to handle steep gradients without requiring a single oversized drive element, thereby reducing overall component stress and wear while maintaining the ability to overcome large level changes.
Solution Approach 2:
Thrust units are strategically positioned at specific locations along the inclined sections where carriages experience maximum gravitational force. This local quality approach ensures that drive force is applied precisely where needed, optimizing energy efficiency and reducing unnecessary stress on other components of the sorting machine.
2Force
If drive elements are oversized to handle heavy packages, then the sorting machine can transport maximum weight, but energy consumption increases
Solution Approach 1:
The thrust units are equipped with control systems that dynamically adjust the force output based on real-time conditions such as carriage weight, slope inclination, and position. This dynamic adjustment allows the system to provide maximum force when needed (handling heavy packages) while minimizing energy consumption during normal operation, eliminating the need for permanently oversized drive elements.
Solution Approach 2:
The system changes operational parameters (force magnitude, activation timing) of the thrust units based on detected conditions. By varying these parameters dynamically, the system maintains high handling capacity for heavy packages while optimizing energy efficiency, avoiding the continuous high energy consumption associated with oversized fixed-capacity drive elements.
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 solution allows sorting machines to overcome strong level changes without oversizing components, reducing stress on joints and wheels, and preventing premature wear, thereby extending the life of mechanical parts and optimizing energy use.
Implementation Method 1
dedicated thrust units along inclined sections that apply constant forces to carriages, independently of speed, to cancel or reduce weight-related tensions and compressions
Implementation Method 2
incorporating electromagnetic brakes for power failures
Data Source
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AI summary
The present invention concerns a method and system for sorting items comprising movable carriages (10) intended to transport the items, and connected to each other by a link (19), along a track having sections located at levels at different heights linked by ascending and descending slopes, a control system and drive units intended to move the carriages (10). Dedicated thrust units, separate from the drive units, are added on the slopes and are controlled individually by the control system so as to deliver a constant force in order to prevent the carriages (10) experiencing tension at the links (19, 20) as a result of the weight of the items and/or the carriages (10) present on the slopes.