Baggage Conveying Speed Control via Continuous Acceleration
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Solution Overview
Problem
Conventional conveying methods for baggage in large airports face issues with rapid speed changes causing inertial forces, displacement, and increased maintenance costs due to complex configurations, which affect the reliability and efficiency of baggage conveyance.
Innovation Solution
A method that controls conveying speed and acceleration/deceleration across sections to maintain consistent speed changes, using ordinary conveyors with controlled motor speeds and sensors for transfer control, allowing for continuous acceleration/deceleration and reducing the need for complex mechanisms, thus improving reliability and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple conveyors with constant speeds are used to increase conveying speed, then the conveying speed of the overall path is improved, but the conveying speed rapidly changes when transferring between conveyors causing inertial force and displacement of the conveyance object
Solution Approach 1:
The patent applies dynamics by making the conveying speed variable rather than constant. Each conveyor section adjusts its speed dynamically based on the position of the conveyance object, creating a continuous acceleration/deceleration profile that eliminates rapid speed changes at transfer points. The conveying speed is controlled to change gradually according to a predetermined acceleration/deceleration rate, transforming the static constant-speed system into a dynamic adaptive system.
Solution Approach 2:
The patent changes the parameter of conveying speed from discrete constant values to continuous variable values. By controlling each conveyor section to operate at different speeds that vary continuously along the conveyance path, the system achieves smooth transitions without abrupt changes. The speed parameter is adjusted according to the acceleration/deceleration requirements of the conveyance object, eliminating inertial forces while maintaining high overall conveying speed.
2Object-affected harmful factors
If a conveyor shaft with spiral groove and returnable case is used to achieve continuous acceleration and deceleration, then the smooth conveyance is improved, but the device complexity and introduction cost are extremely increased
Solution Approach 1:
The patent segments the conveyance path into multiple independent conveyor sections, each capable of independent speed control. Instead of using a single complex conveyor shaft with spiral groove, the system divides the function across multiple simpler conveyor units. Each section handles a portion of the acceleration or deceleration, and they work in sequence to achieve the overall continuous speed variation. This segmentation replaces one complex mechanism with multiple simpler, controllable units.
Solution Approach 2:
The patent replaces the mechanical spiral groove engagement system with an electronic control system. Instead of using mechanical elements like spiral grooves and returnable cases that require precise mechanical engagement, the system uses electronic speed control of conveyor motors to achieve the same continuous acceleration and deceleration effect. This substitution of mechanical complexity with electronic control reduces device complexity while maintaining the desired smooth conveyance.
3Speed
If a conveyor shaft with spiral groove is used for acceleration, then the continuous acceleration is achieved, but the subsequent returnable case cannot be transported until the preceding case finishes acceleration and the shaft is decelerated
Solution Approach 1:
The patent segments the acceleration function across multiple conveyor sections rather than using a single shared conveyor shaft. Each conveyor section can independently accelerate conveyance objects, allowing multiple objects to be accelerated simultaneously in different sections. This eliminates the serial bottleneck where one object must finish acceleration before the next can begin, thereby improving conveyance efficiency while maintaining continuous acceleration capability.
Solution Approach 2:
The patent ensures continuous useful action by allowing multiple conveyor sections to perform acceleration simultaneously rather than sequentially. While one conveyance object is being accelerated in one section, another object can be accelerated in a different section. This parallel operation maintains continuous productive action throughout the system, eliminating idle time and improving overall conveyance efficiency.
4Speed
If multiple conveyors are provided in series to sequentially increase conveying speed, then the conveying speed is improved, but the repeated conveyance wears the belts and tray
Solution Approach 1:
The patent changes the speed parameter continuously rather than in discrete steps, which reduces the number of transfer operations between conveyors. By achieving speed variation within a single conveyor system through continuous acceleration and deceleration, the system minimizes the repeated lifting and transferring of conveyance objects. This reduces mechanical wear on belts and trays while still achieving the necessary high conveying speeds for efficient baggage transport.
Data Source
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AI summary
An object of the present invention is to provide a conveying apparatus that increases the conveying speed of a conveyance object, and improves reliability and conveyance efficiency at low cost. Acceleration/deceleration sections (23, 27), each of which includes a plurality of variable-speed conveyance sections, are provided among constant-speed conveyance sections (21, 25, 29). The conveying speed of a conveyance object (50) is continuously accelerated or decelerated while the conveyance object (50) passes through the acceleration/deceleration sections (23, 27). This changes the conveying speed from the conveying speed of the upstream constant-speed conveyance section to the conveying speed of the downstream constant-speed conveyance section. Thus, it is controlled that the conveying speed and the conveyance acceleration/deceleration is identical between the upstream conveyance section and the downstream conveyance section when the conveyance object (50) is transferred from the upstream conveyance section to the downstream conveyance section.